/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include <config.h> #include <math.h> #include <string.h> #include "eel-editable-label.h" #include "eel-i18n.h" #include "eel-marshal.h" #include "eel-accessibility.h" #include <libgail-util/gailmisc.h> #include <pango/pango.h> #include <gtk/gtk.h> #include <gdk/gdkkeysyms.h> enum { MOVE_CURSOR, POPULATE_POPUP, DELETE_FROM_CURSOR, CUT_CLIPBOARD, COPY_CLIPBOARD, PASTE_CLIPBOARD, TOGGLE_OVERWRITE, LAST_SIGNAL }; enum { PROP_0, PROP_TEXT, PROP_JUSTIFY, PROP_WRAP, PROP_CURSOR_POSITION, PROP_SELECTION_BOUND }; static guint signals[LAST_SIGNAL] = { 0 }; static void eel_editable_label_editable_init (GtkEditableClass *iface); static void eel_editable_label_class_init (EelEditableLabelClass *klass); static void eel_editable_label_init (EelEditableLabel *label); static void eel_editable_label_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void eel_editable_label_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void eel_editable_label_finalize (GObject *object); static void eel_editable_label_size_request (GtkWidget *widget, GtkRequisition *requisition); static void eel_editable_label_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void eel_editable_label_state_changed (GtkWidget *widget, GtkStateType state); static void eel_editable_label_style_set (GtkWidget *widget, GtkStyle *previous_style); static void eel_editable_label_direction_changed (GtkWidget *widget, GtkTextDirection previous_dir); static gint eel_editable_label_expose (GtkWidget *widget, GdkEventExpose *event); static void eel_editable_label_realize (GtkWidget *widget); static void eel_editable_label_unrealize (GtkWidget *widget); static void eel_editable_label_map (GtkWidget *widget); static void eel_editable_label_unmap (GtkWidget *widget); static gint eel_editable_label_button_press (GtkWidget *widget, GdkEventButton *event); static gint eel_editable_label_button_release (GtkWidget *widget, GdkEventButton *event); static gint eel_editable_label_motion (GtkWidget *widget, GdkEventMotion *event); static gint eel_editable_label_key_press (GtkWidget *widget, GdkEventKey *event); static gint eel_editable_label_key_release (GtkWidget *widget, GdkEventKey *event); static gint eel_editable_label_focus_in (GtkWidget *widget, GdkEventFocus *event); static gint eel_editable_label_focus_out (GtkWidget *widget, GdkEventFocus *event); static AtkObject *eel_editable_label_get_accessible (GtkWidget *widget); static void eel_editable_label_commit_cb (GtkIMContext *context, const gchar *str, EelEditableLabel *label); static void eel_editable_label_preedit_changed_cb (GtkIMContext *context, EelEditableLabel *label); static gboolean eel_editable_label_retrieve_surrounding_cb (GtkIMContext *context, EelEditableLabel *label); static gboolean eel_editable_label_delete_surrounding_cb (GtkIMContext *slave, gint offset, gint n_chars, EelEditableLabel *label); static void eel_editable_label_clear_layout (EelEditableLabel *label); static void eel_editable_label_recompute (EelEditableLabel *label); static void eel_editable_label_ensure_layout (EelEditableLabel *label, gboolean include_preedit); static void eel_editable_label_select_region_index (EelEditableLabel *label, gint anchor_index, gint end_index); static gboolean eel_editable_label_focus (GtkWidget *widget, GtkDirectionType direction); static void eel_editable_label_move_cursor (EelEditableLabel *label, GtkMovementStep step, gint count, gboolean extend_selection); static void eel_editable_label_delete_from_cursor (EelEditableLabel *label, GtkDeleteType type, gint count); static void eel_editable_label_copy_clipboard (EelEditableLabel *label); static void eel_editable_label_cut_clipboard (EelEditableLabel *label); static void eel_editable_label_paste (EelEditableLabel *label, GdkAtom selection); static void eel_editable_label_paste_clipboard (EelEditableLabel *label); static void eel_editable_label_select_all (EelEditableLabel *label); static void eel_editable_label_do_popup (EelEditableLabel *label, GdkEventButton *event); static void eel_editable_label_toggle_overwrite (EelEditableLabel *label); static gint eel_editable_label_move_forward_word (EelEditableLabel *label, gint start); static gint eel_editable_label_move_backward_word (EelEditableLabel *label, gint start); static void eel_editable_label_reset_im_context (EelEditableLabel *label); static void eel_editable_label_check_cursor_blink (EelEditableLabel *label); static void eel_editable_label_pend_cursor_blink (EelEditableLabel *label); /* Editable implementation: */ static void editable_insert_text_emit (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position); static void editable_delete_text_emit (GtkEditable *editable, gint start_pos, gint end_pos); static void editable_insert_text (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position); static void editable_delete_text (GtkEditable *editable, gint start_pos, gint end_pos); static gchar * editable_get_chars (GtkEditable *editable, gint start_pos, gint end_pos); static void editable_set_selection_bounds (GtkEditable *editable, gint start, gint end); static gboolean editable_get_selection_bounds (GtkEditable *editable, gint *start, gint *end); static void editable_real_set_position (GtkEditable *editable, gint position); static gint editable_get_position (GtkEditable *editable); static GdkGC * make_cursor_gc (GtkWidget *widget, const gchar *property_name, GdkColor *fallback); G_DEFINE_TYPE_WITH_CODE (EelEditableLabel, eel_editable_label, GTK_TYPE_MISC, G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE, eel_editable_label_editable_init)); static void add_move_binding (GtkBindingSet *binding_set, guint keyval, guint modmask, GtkMovementStep step, gint count) { g_assert ((modmask & GDK_SHIFT_MASK) == 0); gtk_binding_entry_add_signal (binding_set, keyval, modmask, "move_cursor", 3, G_TYPE_ENUM, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, FALSE); /* Selection-extending version */ gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK, "move_cursor", 3, G_TYPE_ENUM, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, TRUE); } static void eel_editable_label_class_init (EelEditableLabelClass *class) { GObjectClass *gobject_class = G_OBJECT_CLASS (class); GtkObjectClass *object_class = GTK_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkBindingSet *binding_set; gobject_class->set_property = eel_editable_label_set_property; gobject_class->get_property = eel_editable_label_get_property; gobject_class->finalize = eel_editable_label_finalize; widget_class->size_request = eel_editable_label_size_request; widget_class->size_allocate = eel_editable_label_size_allocate; widget_class->state_changed = eel_editable_label_state_changed; widget_class->style_set = eel_editable_label_style_set; widget_class->direction_changed = eel_editable_label_direction_changed; widget_class->expose_event = eel_editable_label_expose; widget_class->realize = eel_editable_label_realize; widget_class->unrealize = eel_editable_label_unrealize; widget_class->map = eel_editable_label_map; widget_class->unmap = eel_editable_label_unmap; widget_class->button_press_event = eel_editable_label_button_press; widget_class->button_release_event = eel_editable_label_button_release; widget_class->motion_notify_event = eel_editable_label_motion; widget_class->focus = eel_editable_label_focus; widget_class->key_press_event = eel_editable_label_key_press; widget_class->key_release_event = eel_editable_label_key_release; widget_class->focus_in_event = eel_editable_label_focus_in; widget_class->focus_out_event = eel_editable_label_focus_out; widget_class->get_accessible = eel_editable_label_get_accessible; class->move_cursor = eel_editable_label_move_cursor; class->delete_from_cursor = eel_editable_label_delete_from_cursor; class->copy_clipboard = eel_editable_label_copy_clipboard; class->cut_clipboard = eel_editable_label_cut_clipboard; class->paste_clipboard = eel_editable_label_paste_clipboard; class->toggle_overwrite = eel_editable_label_toggle_overwrite; signals[MOVE_CURSOR] = g_signal_new ("move_cursor", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, move_cursor), NULL, NULL, eel_marshal_VOID__ENUM_INT_BOOLEAN, G_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT, G_TYPE_BOOLEAN); signals[COPY_CLIPBOARD] = g_signal_new ("copy_clipboard", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, copy_clipboard), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); signals[POPULATE_POPUP] = g_signal_new ("populate_popup", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (EelEditableLabelClass, populate_popup), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_MENU); signals[DELETE_FROM_CURSOR] = g_signal_new ("delete_from_cursor", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, delete_from_cursor), NULL, NULL, eel_marshal_VOID__ENUM_INT, G_TYPE_NONE, 2, GTK_TYPE_DELETE_TYPE, G_TYPE_INT); signals[CUT_CLIPBOARD] = g_signal_new ("cut_clipboard", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, cut_clipboard), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); signals[PASTE_CLIPBOARD] = g_signal_new ("paste_clipboard", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, paste_clipboard), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); signals[TOGGLE_OVERWRITE] = g_signal_new ("toggle_overwrite", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EelEditableLabelClass, toggle_overwrite), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_object_class_install_property (G_OBJECT_CLASS(object_class), PROP_TEXT, g_param_spec_string ("text", _("Text"), _("The text of the label."), NULL, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_JUSTIFY, g_param_spec_enum ("justify", _("Justification"), _("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkMisc::xalign for that."), GTK_TYPE_JUSTIFICATION, GTK_JUSTIFY_LEFT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_WRAP, g_param_spec_boolean ("wrap", _("Line wrap"), _("If set, wrap lines if the text becomes too wide."), FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CURSOR_POSITION, g_param_spec_int ("cursor_position", _("Cursor Position"), _("The current position of the insertion cursor in chars."), 0, G_MAXINT, 0, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_SELECTION_BOUND, g_param_spec_int ("selection_bound", _("Selection Bound"), _("The position of the opposite end of the selection from the cursor in chars."), 0, G_MAXINT, 0, G_PARAM_READABLE)); /* * Key bindings */ binding_set = gtk_binding_set_by_class (class); /* Moving the insertion point */ add_move_binding (binding_set, GDK_Right, 0, GTK_MOVEMENT_VISUAL_POSITIONS, 1); add_move_binding (binding_set, GDK_Left, 0, GTK_MOVEMENT_VISUAL_POSITIONS, -1); add_move_binding (binding_set, GDK_KP_Right, 0, GTK_MOVEMENT_VISUAL_POSITIONS, 1); add_move_binding (binding_set, GDK_KP_Left, 0, GTK_MOVEMENT_VISUAL_POSITIONS, -1); add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK, GTK_MOVEMENT_LOGICAL_POSITIONS, 1); add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK, GTK_MOVEMENT_LOGICAL_POSITIONS, -1); add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, -1); add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, -1); add_move_binding (binding_set, GDK_a, GDK_CONTROL_MASK, GTK_MOVEMENT_PARAGRAPH_ENDS, -1); add_move_binding (binding_set, GDK_e, GDK_CONTROL_MASK, GTK_MOVEMENT_PARAGRAPH_ENDS, 1); add_move_binding (binding_set, GDK_f, GDK_MOD1_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding (binding_set, GDK_b, GDK_MOD1_MASK, GTK_MOVEMENT_WORDS, -1); add_move_binding (binding_set, GDK_Home, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1); add_move_binding (binding_set, GDK_End, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1); add_move_binding (binding_set, GDK_KP_Home, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1); add_move_binding (binding_set, GDK_KP_End, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1); add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, -1); add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, 1); add_move_binding (binding_set, GDK_KP_Home, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, -1); add_move_binding (binding_set, GDK_KP_End, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, 1); add_move_binding (binding_set, GDK_Up, 0, GTK_MOVEMENT_DISPLAY_LINES, -1); add_move_binding (binding_set, GDK_KP_Up, 0, GTK_MOVEMENT_DISPLAY_LINES, -1); add_move_binding (binding_set, GDK_Down, 0, GTK_MOVEMENT_DISPLAY_LINES, 1); add_move_binding (binding_set, GDK_KP_Down, 0, GTK_MOVEMENT_DISPLAY_LINES, 1); /* Select all */ gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "move_cursor", 3, GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS, G_TYPE_INT, -1, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "move_cursor", 3, GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS, G_TYPE_INT, 1, G_TYPE_BOOLEAN, TRUE); /* Deleting text */ gtk_binding_entry_add_signal (binding_set, GDK_Delete, 0, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_CHARS, G_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_KP_Delete, 0, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_CHARS, G_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_CHARS, G_TYPE_INT, -1); /* Make this do the same as Backspace, to help with mis-typing */ gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_SHIFT_MASK, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_CHARS, G_TYPE_INT, -1); gtk_binding_entry_add_signal (binding_set, GDK_Delete, GDK_CONTROL_MASK, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_WORD_ENDS, G_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_KP_Delete, GDK_CONTROL_MASK, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_WORD_ENDS, G_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "delete_from_cursor", 2, G_TYPE_ENUM, GTK_DELETE_WORD_ENDS, G_TYPE_INT, -1); /* Cut/copy/paste */ gtk_binding_entry_add_signal (binding_set, GDK_x, GDK_CONTROL_MASK, "cut_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_c, GDK_CONTROL_MASK, "copy_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_v, GDK_CONTROL_MASK, "paste_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_Delete, GDK_SHIFT_MASK, "cut_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_Insert, GDK_CONTROL_MASK, "copy_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_Insert, GDK_SHIFT_MASK, "paste_clipboard", 0); /* Overwrite */ gtk_binding_entry_add_signal (binding_set, GDK_Insert, 0, "toggle_overwrite", 0); gtk_binding_entry_add_signal (binding_set, GDK_KP_Insert, 0, "toggle_overwrite", 0); } static void eel_editable_label_editable_init (GtkEditableClass *iface) { iface->do_insert_text = editable_insert_text_emit; iface->do_delete_text = editable_delete_text_emit; iface->insert_text = editable_insert_text; iface->delete_text = editable_delete_text; iface->get_chars = editable_get_chars; iface->set_selection_bounds = editable_set_selection_bounds; iface->get_selection_bounds = editable_get_selection_bounds; iface->set_position = editable_real_set_position; iface->get_position = editable_get_position; } static void eel_editable_label_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (object); switch (prop_id) { case PROP_TEXT: eel_editable_label_set_text (label, g_value_get_string (value)); break; case PROP_JUSTIFY: eel_editable_label_set_justify (label, g_value_get_enum (value)); break; case PROP_WRAP: eel_editable_label_set_line_wrap (label, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void eel_editable_label_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { EelEditableLabel *label; gint offset; label = EEL_EDITABLE_LABEL (object); switch (prop_id) { case PROP_TEXT: g_value_set_string (value, label->text); break; case PROP_JUSTIFY: g_value_set_enum (value, label->jtype); break; case PROP_WRAP: g_value_set_boolean (value, label->wrap); break; case PROP_CURSOR_POSITION: offset = g_utf8_pointer_to_offset (label->text, label->text + label->selection_end); g_value_set_int (value, offset); break; case PROP_SELECTION_BOUND: offset = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); g_value_set_int (value, offset); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void eel_editable_label_init (EelEditableLabel *label) { label->jtype = GTK_JUSTIFY_LEFT; label->wrap = FALSE; label->wrap_mode = PANGO_WRAP_WORD; label->layout = NULL; label->text_size = 1; label->text = g_malloc (label->text_size); label->text[0] = '\0'; label->n_bytes = 0; gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE); /* This object is completely private. No external entity can gain a reference * to it; so we create it here and destroy it in finalize(). */ label->im_context = gtk_im_multicontext_new (); g_signal_connect (G_OBJECT (label->im_context), "commit", G_CALLBACK (eel_editable_label_commit_cb), label); g_signal_connect (G_OBJECT (label->im_context), "preedit_changed", G_CALLBACK (eel_editable_label_preedit_changed_cb), label); g_signal_connect (G_OBJECT (label->im_context), "retrieve_surrounding", G_CALLBACK (eel_editable_label_retrieve_surrounding_cb), label); g_signal_connect (G_OBJECT (label->im_context), "delete_surrounding", G_CALLBACK (eel_editable_label_delete_surrounding_cb), label); } /** * eel_editable_label_new: * @str: The text of the label * * Creates a new label with the given text inside it. You can * pass %NULL to get an empty label widget. * * Return value: the new #EelEditableLabel **/ GtkWidget* eel_editable_label_new (const gchar *str) { EelEditableLabel *label; label = g_object_new (EEL_TYPE_EDITABLE_LABEL, NULL); if (str && *str) eel_editable_label_set_text (label, str); return GTK_WIDGET (label); } /** * eel_editable_label_set_text: * @label: a #EelEditableLabel * @str: The text you want to set. * * Sets the text within the #EelEditableLabel widget. It overwrites any text that * was there before. * * This will also clear any previously set mnemonic accelerators. **/ void eel_editable_label_set_text (EelEditableLabel *label, const gchar *str) { GtkEditable *editable; int tmp_pos; g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); g_return_if_fail (str != NULL); if (strcmp (label->text, str) == 0) return; editable = GTK_EDITABLE (label); gtk_editable_delete_text (editable, 0, -1); tmp_pos = 0; gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos); } /** * eel_editable_label_get_text: * @label: a #EelEditableLabel * * Fetches the text from a label widget, as displayed on the * screen. This does not include any embedded underlines * indicating mnemonics or Pango markup. (See eel_editable_label_get_label()) * * Return value: the text in the label widget. This is the internal * string used by the label, and must not be modified. **/ const gchar* eel_editable_label_get_text(EelEditableLabel* label) { g_return_val_if_fail(EEL_IS_EDITABLE_LABEL(label), NULL); return label->text; } /** * eel_editable_label_set_justify: * @label: a #EelEditableLabel * @jtype: a #GtkJustification * * Sets the alignment of the lines in the text of the label relative to * each other. %GTK_JUSTIFY_LEFT is the default value when the * widget is first created with eel_editable_label_new(). If you instead want * to set the alignment of the label as a whole, use * gtk_misc_set_alignment() instead. eel_editable_label_set_justify() has no * effect on labels containing only a single line. **/ void eel_editable_label_set_justify (EelEditableLabel *label, GtkJustification jtype) { g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL); if ((GtkJustification) label->jtype != jtype) { label->jtype = jtype; /* No real need to be this drastic, but easier than duplicating the code */ eel_editable_label_recompute (label); g_object_notify (G_OBJECT (label), "justify"); gtk_widget_queue_resize (GTK_WIDGET (label)); } } /** * eel_editable_label_get_justify: * @label: a #EelEditableLabel * * Returns the justification of the label. See eel_editable_label_set_justify (). * * Return value: #GtkJustification **/ GtkJustification eel_editable_label_get_justify (EelEditableLabel *label) { g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), 0); return label->jtype; } void eel_editable_label_set_draw_outline (EelEditableLabel *label, gboolean draw_outline) { draw_outline = draw_outline != FALSE; if (label->draw_outline != draw_outline) { label->draw_outline = draw_outline; gtk_widget_queue_draw (GTK_WIDGET (label)); } } /** * eel_editable_label_set_line_wrap: * @label: a #EelEditableLabel * @wrap: the setting * * Toggles line wrapping within the #EelEditableLabel widget. %TRUE makes it break * lines if text exceeds the widget's size. %FALSE lets the text get cut off * by the edge of the widget if it exceeds the widget size. **/ void eel_editable_label_set_line_wrap (EelEditableLabel *label, gboolean wrap) { g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); wrap = wrap != FALSE; if (label->wrap != wrap) { label->wrap = wrap; g_object_notify (G_OBJECT (label), "wrap"); gtk_widget_queue_resize (GTK_WIDGET (label)); } } void eel_editable_label_set_line_wrap_mode (EelEditableLabel *label, PangoWrapMode mode) { g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); if (label->wrap_mode != mode) { label->wrap_mode = mode; gtk_widget_queue_resize (GTK_WIDGET (label)); } } /** * eel_editable_label_get_line_wrap: * @label: a #EelEditableLabel * * Returns whether lines in the label are automatically wrapped. See eel_editable_label_set_line_wrap (). * * Return value: %TRUE if the lines of the label are automatically wrapped. */ gboolean eel_editable_label_get_line_wrap (EelEditableLabel *label) { g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), FALSE); return label->wrap; } PangoFontDescription * eel_editable_label_get_font_description (EelEditableLabel *label) { if (label->font_desc) return pango_font_description_copy (label->font_desc); return NULL; } void eel_editable_label_set_font_description (EelEditableLabel *label, const PangoFontDescription *desc) { if (label->font_desc) pango_font_description_free (label->font_desc); if (desc) label->font_desc = pango_font_description_copy (desc); else label->font_desc = NULL; eel_editable_label_clear_layout (label); } static void eel_editable_label_finalize (GObject *object) { EelEditableLabel *label; g_assert (EEL_IS_EDITABLE_LABEL (object)); label = EEL_EDITABLE_LABEL (object); if (label->font_desc) { pango_font_description_free (label->font_desc); label->font_desc = NULL; } g_object_unref (G_OBJECT (label->im_context)); label->im_context = NULL; g_free (label->text); label->text = NULL; if (label->layout) { g_object_unref (G_OBJECT (label->layout)); label->layout = NULL; } G_OBJECT_CLASS (eel_editable_label_parent_class)->finalize (object); } static void eel_editable_label_clear_layout (EelEditableLabel *label) { if (label->layout) { g_object_unref (G_OBJECT (label->layout)); label->layout = NULL; } } static void eel_editable_label_recompute (EelEditableLabel *label) { eel_editable_label_clear_layout (label); eel_editable_label_check_cursor_blink (label); } typedef struct _LabelWrapWidth LabelWrapWidth; struct _LabelWrapWidth { gint width; PangoFontDescription *font_desc; }; static void label_wrap_width_free (gpointer data) { LabelWrapWidth *wrap_width = data; pango_font_description_free (wrap_width->font_desc); g_free (wrap_width); } static gint get_label_wrap_width (EelEditableLabel *label) { PangoLayout *layout; GtkStyle *style = gtk_widget_get_style (GTK_WIDGET (label)); LabelWrapWidth *wrap_width = g_object_get_data (G_OBJECT (style), "gtk-label-wrap-width"); if (!wrap_width) { wrap_width = g_new0 (LabelWrapWidth, 1); g_object_set_data_full (G_OBJECT (style), "gtk-label-wrap-width", wrap_width, label_wrap_width_free); } if (wrap_width->font_desc && pango_font_description_equal (wrap_width->font_desc, style->font_desc)) return wrap_width->width; if (wrap_width->font_desc) pango_font_description_free (wrap_width->font_desc); wrap_width->font_desc = pango_font_description_copy (style->font_desc); layout = gtk_widget_create_pango_layout (GTK_WIDGET (label), "This long string gives a good enough length for any line to have."); pango_layout_get_size (layout, &wrap_width->width, NULL); g_object_unref (layout); return wrap_width->width; } static void eel_editable_label_ensure_layout (EelEditableLabel *label, gboolean include_preedit) { GtkWidget *widget; PangoRectangle logical_rect; /* Normalize for comparisons */ include_preedit = include_preedit != 0; if (label->preedit_length > 0 && include_preedit != label->layout_includes_preedit) eel_editable_label_clear_layout (label); widget = GTK_WIDGET (label); if (label->layout == NULL) { gchar *preedit_string = NULL; gint preedit_length = 0; PangoAttrList *preedit_attrs = NULL; PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */ PangoAttrList *tmp_attrs = pango_attr_list_new (); if (include_preedit) { gtk_im_context_get_preedit_string (label->im_context, &preedit_string, &preedit_attrs, NULL); preedit_length = label->preedit_length; } if (preedit_length) { GString *tmp_string = g_string_new (NULL); g_string_prepend_len (tmp_string, label->text, label->n_bytes); g_string_insert (tmp_string, label->selection_anchor, preedit_string); label->layout = gtk_widget_create_pango_layout (widget, tmp_string->str); pango_attr_list_splice (tmp_attrs, preedit_attrs, label->selection_anchor, preedit_length); g_string_free (tmp_string, TRUE); } else { label->layout = gtk_widget_create_pango_layout (widget, label->text); } label->layout_includes_preedit = include_preedit; if (label->font_desc != NULL) pango_layout_set_font_description (label->layout, label->font_desc); pango_layout_set_attributes (label->layout, tmp_attrs); if (preedit_string) g_free (preedit_string); if (preedit_attrs) pango_attr_list_unref (preedit_attrs); pango_attr_list_unref (tmp_attrs); switch (label->jtype) { case GTK_JUSTIFY_LEFT: align = PANGO_ALIGN_LEFT; break; case GTK_JUSTIFY_RIGHT: align = PANGO_ALIGN_RIGHT; break; case GTK_JUSTIFY_CENTER: align = PANGO_ALIGN_CENTER; break; case GTK_JUSTIFY_FILL: /* FIXME: This just doesn't work to do this */ align = PANGO_ALIGN_LEFT; pango_layout_set_justify (label->layout, TRUE); break; default: g_assert_not_reached(); } pango_layout_set_alignment (label->layout, align); if (label->wrap) { gint longest_paragraph; gint width, height; gint set_width; gtk_widget_get_size_request (widget, &set_width, NULL); if (set_width > 0) pango_layout_set_width (label->layout, set_width * PANGO_SCALE); else { gint wrap_width; pango_layout_set_width (label->layout, -1); pango_layout_get_extents (label->layout, NULL, &logical_rect); width = logical_rect.width; /* Try to guess a reasonable maximum width */ longest_paragraph = width; wrap_width = get_label_wrap_width (label); width = MIN (width, wrap_width); width = MIN (width, PANGO_SCALE * (gdk_screen_width () + 1) / 2); pango_layout_set_width (label->layout, width); pango_layout_get_extents (label->layout, NULL, &logical_rect); width = logical_rect.width; height = logical_rect.height; /* Unfortunately, the above may leave us with a very unbalanced looking paragraph, * so we try short search for a narrower width that leaves us with the same height */ if (longest_paragraph > 0) { gint nlines, perfect_width; nlines = pango_layout_get_line_count (label->layout); perfect_width = (longest_paragraph + nlines - 1) / nlines; if (perfect_width < width) { pango_layout_set_width (label->layout, perfect_width); pango_layout_get_extents (label->layout, NULL, &logical_rect); if (logical_rect.height <= height) width = logical_rect.width; else { gint mid_width = (perfect_width + width) / 2; if (mid_width > perfect_width) { pango_layout_set_width (label->layout, mid_width); pango_layout_get_extents (label->layout, NULL, &logical_rect); if (logical_rect.height <= height) width = logical_rect.width; } } } } pango_layout_set_width (label->layout, width); } pango_layout_set_wrap (label->layout, label->wrap_mode); } else /* !label->wrap */ pango_layout_set_width (label->layout, -1); } } static void eel_editable_label_size_request (GtkWidget *widget, GtkRequisition *requisition) { EelEditableLabel *label; gint width, height; PangoRectangle logical_rect; gint set_width; gfloat xpad, ypad; g_assert (EEL_IS_EDITABLE_LABEL (widget)); g_assert (requisition != NULL); label = EEL_EDITABLE_LABEL (widget); /* * If word wrapping is on, then the height requisition can depend * on: * * - Any width set on the widget via gtk_widget_set_size_request(). * - The padding of the widget (xpad, set by gtk_misc_set_padding) * * Instead of trying to detect changes to these quantities, if we * are wrapping, we just rewrap for each size request. Since * size requisitions are cached by the GTK+ core, this is not * expensive. */ if (label->wrap) eel_editable_label_recompute (label); eel_editable_label_ensure_layout (label, TRUE); gtk_misc_get_alignment (&label->misc, &xpad, &ypad); width = xpad * 2; height = ypad * 2; pango_layout_get_extents (label->layout, NULL, &logical_rect); gtk_widget_get_size_request (widget, &set_width, NULL); if (label->wrap && set_width > 0) width += set_width; else width += PANGO_PIXELS (logical_rect.width); height += PANGO_PIXELS (logical_rect.height); requisition->width = width; requisition->height = height; } static void eel_editable_label_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->size_allocate) (widget, allocation); } static void eel_editable_label_state_changed (GtkWidget *widget, GtkStateType prev_state) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (widget); eel_editable_label_select_region (label, 0, 0); if (GTK_WIDGET_CLASS (eel_editable_label_parent_class)->state_changed) GTK_WIDGET_CLASS (eel_editable_label_parent_class)->state_changed (widget, prev_state); } static void eel_editable_label_style_set (GtkWidget *widget, GtkStyle *previous_style) { EelEditableLabel *label; static GdkColor gray = { 0, 0x8888, 0x8888, 0x8888 }; g_assert (EEL_IS_EDITABLE_LABEL (widget)); label = EEL_EDITABLE_LABEL (widget); /* We have to clear the layout, fonts etc. may have changed */ eel_editable_label_recompute (label); /* Set the background, foreground and cursor colors based on * the new theme selected. */ if (gtk_widget_get_realized (widget)) { GtkStyle *style; style = gtk_widget_get_style (widget); gdk_window_set_background (gtk_widget_get_window (widget), &style->base[gtk_widget_get_state (widget)]); if (label->primary_cursor_gc != NULL) { gtk_gc_release (label->primary_cursor_gc); label->primary_cursor_gc = NULL; } if (label->secondary_cursor_gc != NULL) { gtk_gc_release (label->secondary_cursor_gc); label->secondary_cursor_gc = NULL; } label->primary_cursor_gc = make_cursor_gc (widget, "cursor-color", &style->black); label->secondary_cursor_gc = make_cursor_gc (widget, "secondary-cursor-color", &gray); } } static void eel_editable_label_direction_changed (GtkWidget *widget, GtkTextDirection previous_dir) { EelEditableLabel *label = EEL_EDITABLE_LABEL (widget); if (label->layout) pango_layout_context_changed (label->layout); GTK_WIDGET_CLASS (eel_editable_label_parent_class)->direction_changed (widget, previous_dir); } static void get_layout_location (EelEditableLabel *label, gint *xp, gint *yp) { GtkMisc *misc; GtkWidget *widget; gfloat xalign, yalign; GtkRequisition req; gint x, y, xpad, ypad; GtkAllocation allocation; misc = GTK_MISC (label); widget = GTK_WIDGET (label); gtk_misc_get_alignment (misc, &xalign, &yalign); if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR) xalign = 1.0 - xalign; gtk_widget_get_child_requisition (widget, &req); gtk_misc_get_padding (misc, &xpad, &ypad); gtk_widget_get_allocation (widget, &allocation); x = floor (xpad + ((allocation.width - req.width) * xalign) + 0.5); y = floor (ypad + ((allocation.height - req.height) * yalign) + 0.5); if (xp) *xp = x; if (yp) *yp = y; } static void eel_editable_label_get_cursor_pos (EelEditableLabel *label, PangoRectangle *strong_pos, PangoRectangle *weak_pos) { const gchar *text; const gchar *preedit_text; gint index; eel_editable_label_ensure_layout (label, TRUE); text = pango_layout_get_text (label->layout); preedit_text = text + label->selection_anchor; index = label->selection_anchor + g_utf8_offset_to_pointer (preedit_text, label->preedit_cursor) - preedit_text; pango_layout_get_cursor_pos (label->layout, index, strong_pos, weak_pos); } /* Copied from gtkutil private function */ static gboolean eel_editable_label_get_block_cursor_location (EelEditableLabel *label, gint *index, PangoRectangle *pos, gboolean *at_line_end) { const gchar *text; const gchar *preedit_text; PangoLayoutLine *layout_line; PangoRectangle strong_pos, weak_pos; gint line_no; gboolean rtl; PangoContext *context; PangoFontMetrics *metrics; const PangoFontDescription *font_desc; eel_editable_label_ensure_layout (label, TRUE); text = pango_layout_get_text (label->layout); preedit_text = text + label->selection_anchor; text = g_utf8_offset_to_pointer (preedit_text, label->preedit_cursor); index[0] = label->selection_anchor + text - preedit_text; pango_layout_index_to_pos (label->layout, index[0], pos); index[1] = label->selection_anchor + g_utf8_next_char (text) - preedit_text; if (pos->width != 0) { if (at_line_end) *at_line_end = FALSE; if (pos->width < 0) /* RTL char, shift x value back to top left of rect */ { pos->x += pos->width; pos->width = -pos->width; } return TRUE; } pango_layout_index_to_line_x (label->layout, index[0], FALSE, &line_no, NULL); layout_line = pango_layout_get_line_readonly (label->layout, line_no); if (layout_line == NULL) return FALSE; text = pango_layout_get_text (label->layout); if (index[0] < layout_line->start_index + layout_line->length) { /* this may be a zero-width character in the middle of the line, * or it could be a character where line is wrapped, we do want * block cursor in latter case */ if (g_utf8_next_char (text + index[0]) - text != layout_line->start_index + layout_line->length) { /* zero-width character in the middle of the line, do not * bother with block cursor */ return FALSE; } } /* Cursor is at the line end. It may be an empty line, or it could * be on the left or on the right depending on text direction, or it * even could be in the middle of visual layout in bidi text. */ pango_layout_get_cursor_pos (label->layout, index[0], &strong_pos, &weak_pos); if (strong_pos.x != weak_pos.x) { /* do not show block cursor in this case, since the character typed * in may or may not appear at the cursor position */ return FALSE; } context = pango_layout_get_context (label->layout); /* In case when index points to the end of line, pos->x is always most right * pixel of the layout line, so we need to correct it for RTL text. */ if (layout_line->length) { if (layout_line->resolved_dir == PANGO_DIRECTION_RTL) { PangoLayoutIter *iter; PangoRectangle line_rect; gint i; gint left, right; const gchar *p; p = g_utf8_prev_char (text + index[0]); pango_layout_line_index_to_x (layout_line, p - text, FALSE, &left); pango_layout_line_index_to_x (layout_line, p - text, TRUE, &right); pos->x = MIN (left, right); iter = pango_layout_get_iter (label->layout); for (i = 0; i < line_no; i++) pango_layout_iter_next_line (iter); pango_layout_iter_get_line_extents (iter, NULL, &line_rect); pango_layout_iter_free (iter); rtl = TRUE; pos->x += line_rect.x; } else rtl = FALSE; } else { rtl = pango_context_get_base_dir (context) == PANGO_DIRECTION_RTL; } font_desc = pango_layout_get_font_description (label->layout); if (!font_desc) font_desc = pango_context_get_font_description (context); metrics = pango_context_get_metrics (context, font_desc, NULL); pos->width = pango_font_metrics_get_approximate_char_width (metrics); pango_font_metrics_unref (metrics); if (rtl) pos->x -= pos->width - 1; if (at_line_end) *at_line_end = TRUE; return pos->width != 0; } /* These functions are copies from gtk+, as they are not exported from gtk+ */ static GdkGC * make_cursor_gc (GtkWidget *widget, const gchar *property_name, GdkColor *fallback) { GdkGCValues gc_values; GdkGCValuesMask gc_values_mask; GdkColor *cursor_color; GtkStyle *style; style = gtk_widget_get_style (widget); gtk_widget_style_get (widget, property_name, &cursor_color, NULL); gc_values_mask = GDK_GC_FOREGROUND; if (cursor_color) { gc_values.foreground = *cursor_color; gdk_color_free (cursor_color); } else gc_values.foreground = *fallback; gdk_rgb_find_color (style->colormap, &gc_values.foreground); return gtk_gc_get (style->depth, style->colormap, &gc_values, gc_values_mask); } static void _eel_draw_insertion_cursor (GtkWidget *widget, GdkDrawable *drawable, GdkGC *gc, GdkRectangle *location, GtkTextDirection direction, gboolean draw_arrow) { gint stem_width; gint arrow_width; gint x, y; gint i; gfloat cursor_aspect_ratio; gint offset; g_assert (direction != GTK_TEXT_DIR_NONE); gtk_widget_style_get (widget, "cursor-aspect-ratio", &cursor_aspect_ratio, NULL); stem_width = location->height * cursor_aspect_ratio + 1; arrow_width = stem_width + 1; /* put (stem_width % 2) on the proper side of the cursor */ if (direction == GTK_TEXT_DIR_LTR) offset = stem_width / 2; else offset = stem_width - stem_width / 2; for (i = 0; i < stem_width; i++) gdk_draw_line (drawable, gc, location->x + i - offset, location->y, location->x + i - offset, location->y + location->height - 1); if (draw_arrow) { if (direction == GTK_TEXT_DIR_RTL) { x = location->x - offset - 1; y = location->y + location->height - arrow_width * 2 - arrow_width + 1; for (i = 0; i < arrow_width; i++) { gdk_draw_line (drawable, gc, x, y + i + 1, x, y + 2 * arrow_width - i - 1); x --; } } else if (direction == GTK_TEXT_DIR_LTR) { x = location->x + stem_width - offset; y = location->y + location->height - arrow_width * 2 - arrow_width + 1; for (i = 0; i < arrow_width; i++) { gdk_draw_line (drawable, gc, x, y + i + 1, x, y + 2 * arrow_width - i - 1); x++; } } } } static void eel_editable_label_draw_cursor (EelEditableLabel *label, gint xoffset, gint yoffset) { if (gtk_widget_is_drawable (GTK_WIDGET (label))) { GtkWidget *widget = GTK_WIDGET (label); GtkTextDirection keymap_direction; GtkTextDirection widget_direction; gboolean split_cursor; gboolean block; gboolean block_at_line_end; gint range[2]; PangoRectangle strong_pos, weak_pos; PangoRectangle *cursor1 = NULL; PangoRectangle *cursor2 = NULL; GdkRectangle cursor_location; GtkTextDirection dir1 = GTK_TEXT_DIR_NONE; GtkTextDirection dir2 = GTK_TEXT_DIR_NONE; keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; widget_direction = gtk_widget_get_direction (widget); if (label->overwrite_mode && eel_editable_label_get_block_cursor_location (label, range, &strong_pos, &block_at_line_end)) block = TRUE; else block = FALSE; if (!block) { eel_editable_label_get_cursor_pos (label, &strong_pos, &weak_pos); g_object_get (gtk_widget_get_settings (widget), "gtk-split-cursor", &split_cursor, NULL); dir1 = widget_direction; if (split_cursor) { cursor1 = &strong_pos; if (strong_pos.x != weak_pos.x || strong_pos.y != weak_pos.y) { dir2 = (widget_direction == GTK_TEXT_DIR_LTR) ? GTK_TEXT_DIR_RTL : GTK_TEXT_DIR_LTR; cursor2 = &weak_pos; } } else { if (keymap_direction == widget_direction) cursor1 = &strong_pos; else cursor1 = &weak_pos; } cursor_location.x = xoffset + PANGO_PIXELS (cursor1->x); cursor_location.y = yoffset + PANGO_PIXELS (cursor1->y); cursor_location.width = 0; cursor_location.height = PANGO_PIXELS (cursor1->height); _eel_draw_insertion_cursor (widget, gtk_widget_get_window (widget), label->primary_cursor_gc, &cursor_location, dir1, dir2 != GTK_TEXT_DIR_NONE); if (dir2 != GTK_TEXT_DIR_NONE) { cursor_location.x = xoffset + PANGO_PIXELS (cursor2->x); cursor_location.y = yoffset + PANGO_PIXELS (cursor2->y); cursor_location.width = 0; cursor_location.height = PANGO_PIXELS (cursor2->height); _eel_draw_insertion_cursor (widget, gtk_widget_get_window (widget), label->secondary_cursor_gc, &cursor_location, dir2, TRUE); } } else /* Block cursor */ { GdkRegion *clip; gdk_draw_rectangle (gtk_widget_get_window (widget), label->primary_cursor_gc, TRUE, xoffset + PANGO_PIXELS (strong_pos.x), yoffset + PANGO_PIXELS (strong_pos.y), PANGO_PIXELS (strong_pos.width), PANGO_PIXELS (strong_pos.height)); if (!block_at_line_end) { clip = gdk_pango_layout_get_clip_region (label->layout, xoffset, yoffset, range, 1); /* FIXME should use gtk_paint, but it can't use a clip * region */ gdk_gc_set_clip_region (label->primary_cursor_gc, clip); gdk_draw_layout_with_colors (gtk_widget_get_window (widget), label->primary_cursor_gc, xoffset, yoffset, label->layout, >k_widget_get_style (widget)->base[GTK_STATE_NORMAL], NULL); gdk_gc_set_clip_region (label->primary_cursor_gc, NULL); gdk_region_destroy (clip); } } } } static gint eel_editable_label_expose (GtkWidget *widget, GdkEventExpose *event) { EelEditableLabel *label; GtkStyle *style; gint x, y; g_assert (EEL_IS_EDITABLE_LABEL (widget)); g_assert (event != NULL); label = EEL_EDITABLE_LABEL (widget); style = gtk_widget_get_style (widget); eel_editable_label_ensure_layout (label, TRUE); if (gtk_widget_get_visible (widget) && gtk_widget_get_mapped (widget) && label->text) { get_layout_location (label, &x, &y); gtk_paint_layout (style, gtk_widget_get_window (widget), gtk_widget_get_state (widget), TRUE, &event->area, widget, "label", x, y, label->layout); if (label->selection_anchor != label->selection_end) { gint range[2]; const char *text; GdkRegion *clip; GtkStateType state; range[0] = label->selection_anchor; range[1] = label->selection_end; /* Handle possible preedit string */ if (label->preedit_length > 0 && range[1] > label->selection_anchor) { text = pango_layout_get_text (label->layout) + label->selection_anchor; range[1] += g_utf8_offset_to_pointer (text, label->preedit_length) - text; } if (range[0] > range[1]) { gint tmp = range[0]; range[0] = range[1]; range[1] = tmp; } clip = gdk_pango_layout_get_clip_region (label->layout, x, y, range, 1); /* FIXME should use gtk_paint, but it can't use a clip * region */ gdk_gc_set_clip_region (style->black_gc, clip); state = GTK_STATE_SELECTED; if (!gtk_widget_has_focus (widget)) state = GTK_STATE_ACTIVE; gdk_draw_layout_with_colors (gtk_widget_get_window (widget), style->black_gc, x, y, label->layout, &style->text[state], &style->base[state]); gdk_gc_set_clip_region (style->black_gc, NULL); gdk_region_destroy (clip); } else if (gtk_widget_has_focus (widget)) eel_editable_label_draw_cursor (label, x, y); if (label->draw_outline) { GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); gdk_draw_rectangle (gtk_widget_get_window (widget), style->text_gc [gtk_widget_get_state (widget)], FALSE, 0, 0, allocation.width - 1, allocation.height - 1); } } return FALSE; } static void eel_editable_label_realize (GtkWidget *widget) { EelEditableLabel *label; GdkWindowAttr attributes; gint attributes_mask; static GdkColor gray = { 0, 0x8888, 0x8888, 0x8888 }; GtkAllocation allocation; GdkWindow *window; GtkStyle *style; gtk_widget_set_realized (widget, TRUE); label = EEL_EDITABLE_LABEL (widget); gtk_widget_get_allocation (widget, &allocation); attributes.wclass = GDK_INPUT_OUTPUT; attributes.window_type = GDK_WINDOW_CHILD; attributes.x = allocation.x; attributes.y = allocation.y; attributes.width = allocation.width; attributes.height = allocation.height; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.cursor = gdk_cursor_new (GDK_XTERM); attributes.event_mask = gtk_widget_get_events (widget) | (GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON1_MOTION_MASK | GDK_BUTTON3_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP | GDK_WA_CURSOR; window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gtk_widget_set_window (widget, window); gdk_window_set_user_data (window, widget); gdk_cursor_unref (attributes.cursor); style = gtk_style_attach (gtk_widget_get_style (widget) , gtk_widget_get_window (widget)); gtk_widget_set_style (widget, style); gdk_window_set_background (gtk_widget_get_window (widget), &style->base[gtk_widget_get_state (widget)]); gtk_im_context_set_client_window (label->im_context, gtk_widget_get_window (widget)); label->primary_cursor_gc = make_cursor_gc (widget, "cursor-color", &style->black); label->secondary_cursor_gc = make_cursor_gc (widget, "secondary-cursor-color", &gray); } static void eel_editable_label_unrealize (GtkWidget *widget) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (widget); gtk_gc_release (label->primary_cursor_gc); label->primary_cursor_gc = NULL; gtk_gc_release (label->secondary_cursor_gc); label->secondary_cursor_gc = NULL; /* Strange. Copied from GtkEntry, should be NULL? */ gtk_im_context_set_client_window (label->im_context, NULL); (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->unrealize) (widget); } static void eel_editable_label_map (GtkWidget *widget) { (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->map) (widget); } static void eel_editable_label_unmap (GtkWidget *widget) { (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->unmap) (widget); } static void window_to_layout_coords (EelEditableLabel *label, gint *x, gint *y) { gint lx, ly; /* get layout location in gtk_widget_get_window (widget) coords */ get_layout_location (label, &lx, &ly); if (x) *x -= lx; /* go to layout */ if (y) *y -= ly; /* go to layout */ } static void get_layout_index (EelEditableLabel *label, gint x, gint y, gint *index) { gint trailing = 0; const gchar *cluster; const gchar *cluster_end; *index = 0; eel_editable_label_ensure_layout (label, TRUE); window_to_layout_coords (label, &x, &y); x *= PANGO_SCALE; y *= PANGO_SCALE; pango_layout_xy_to_index (label->layout, x, y, index, &trailing); if (*index >= label->selection_anchor && label->preedit_length) { if (*index >= label->selection_anchor + label->preedit_length) *index -= label->preedit_length; else { *index = label->selection_anchor; trailing = 0; } } cluster = label->text + *index; cluster_end = cluster; while (trailing) { cluster_end = g_utf8_next_char (cluster_end); --trailing; } *index += (cluster_end - cluster); } static void eel_editable_label_select_word (EelEditableLabel *label) { gint min, max; gint start_index = eel_editable_label_move_backward_word (label, label->selection_end); gint end_index = eel_editable_label_move_forward_word (label, label->selection_end); min = MIN (label->selection_anchor, label->selection_end); max = MAX (label->selection_anchor, label->selection_end); min = MIN (min, start_index); max = MAX (max, end_index); eel_editable_label_select_region_index (label, min, max); } static gint eel_editable_label_button_press (GtkWidget *widget, GdkEventButton *event) { EelEditableLabel *label; gint index = 0; label = EEL_EDITABLE_LABEL (widget); if (event->button == 1) { if (!gtk_widget_has_focus (widget)) gtk_widget_grab_focus (widget); if (event->type == GDK_3BUTTON_PRESS) { eel_editable_label_select_region_index (label, 0, strlen (label->text)); return TRUE; } if (event->type == GDK_2BUTTON_PRESS) { eel_editable_label_select_word (label); return TRUE; } get_layout_index (label, event->x, event->y, &index); if ((label->selection_anchor != label->selection_end) && (event->state & GDK_SHIFT_MASK)) { gint min, max; /* extend (same as motion) */ min = MIN (label->selection_anchor, label->selection_end); max = MAX (label->selection_anchor, label->selection_end); min = MIN (min, index); max = MAX (max, index); /* ensure the anchor is opposite index */ if (index == min) { gint tmp = min; min = max; max = tmp; } eel_editable_label_select_region_index (label, min, max); } else { if (event->type == GDK_3BUTTON_PRESS) eel_editable_label_select_region_index (label, 0, strlen (label->text)); else if (event->type == GDK_2BUTTON_PRESS) eel_editable_label_select_word (label); else /* start a replacement */ eel_editable_label_select_region_index (label, index, index); } return TRUE; } else if (event->button == 2 && event->type == GDK_BUTTON_PRESS) { get_layout_index (label, event->x, event->y, &index); eel_editable_label_select_region_index (label, index, index); eel_editable_label_paste (label, GDK_SELECTION_PRIMARY); return TRUE; } else if (event->button == 3 && event->type == GDK_BUTTON_PRESS) { eel_editable_label_do_popup (label, event); return TRUE; } return FALSE; } static gint eel_editable_label_button_release (GtkWidget *widget, GdkEventButton *event) { if (event->button != 1) return FALSE; /* The goal here is to return TRUE iff we ate the * button press to start selecting. */ return TRUE; } static gint eel_editable_label_motion (GtkWidget *widget, GdkEventMotion *event) { EelEditableLabel *label; gint index; gint x, y; label = EEL_EDITABLE_LABEL (widget); if ((event->state & GDK_BUTTON1_MASK) == 0) return FALSE; gdk_window_get_pointer (gtk_widget_get_window (widget), &x, &y, NULL); get_layout_index (label, x, y, &index); eel_editable_label_select_region_index (label, label->selection_anchor, index); return TRUE; } static void get_text_callback (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer user_data_or_owner) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (user_data_or_owner); if ((label->selection_anchor != label->selection_end) && label->text) { gint start, end; gint len; start = MIN (label->selection_anchor, label->selection_end); end = MAX (label->selection_anchor, label->selection_end); len = strlen (label->text); if (end > len) end = len; if (start > len) start = len; gtk_selection_data_set_text (selection_data, label->text + start, end - start); } } static void clear_text_callback (GtkClipboard *clipboard, gpointer user_data_or_owner) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (user_data_or_owner); label->selection_anchor = label->selection_end; gtk_widget_queue_draw (GTK_WIDGET (label)); } static void eel_editable_label_select_region_index (EelEditableLabel *label, gint anchor_index, gint end_index) { GtkClipboard *clipboard; g_assert (EEL_IS_EDITABLE_LABEL (label)); if (label->selection_anchor == anchor_index && label->selection_end == end_index) return; eel_editable_label_reset_im_context (label); label->selection_anchor = anchor_index; label->selection_end = end_index; clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY); if (anchor_index != end_index) { GtkTargetList *list; GtkTargetEntry *targets; guint n_targets; list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (list, 0); targets = gtk_target_table_new_from_list (list, &n_targets); gtk_clipboard_set_with_owner (clipboard, targets, n_targets, get_text_callback, clear_text_callback, G_OBJECT (label)); gtk_clipboard_set_can_store (clipboard, NULL, 0); gtk_target_table_free (targets, n_targets); gtk_target_list_unref (list); } else { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (label)) gtk_clipboard_clear (clipboard); } gtk_widget_queue_draw (GTK_WIDGET (label)); g_object_freeze_notify (G_OBJECT (label)); g_object_notify (G_OBJECT (label), "cursor_position"); g_object_notify (G_OBJECT (label), "selection_bound"); g_object_thaw_notify (G_OBJECT (label)); } /** * eel_editable_label_select_region: * @label: a #EelEditableLabel * @start_offset: start offset (in characters not bytes) * @end_offset: end offset (in characters not bytes) * * Selects a range of characters in the label, if the label is selectable. * See eel_editable_label_set_selectable(). If the label is not selectable, * this function has no effect. If @start_offset or * @end_offset are -1, then the end of the label will be substituted. * **/ void eel_editable_label_select_region (EelEditableLabel *label, gint start_offset, gint end_offset) { g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); if (label->text) { if (start_offset < 0) start_offset = g_utf8_strlen (label->text, -1); if (end_offset < 0) end_offset = g_utf8_strlen (label->text, -1); eel_editable_label_select_region_index (label, g_utf8_offset_to_pointer (label->text, start_offset) - label->text, g_utf8_offset_to_pointer (label->text, end_offset) - label->text); } } /** * eel_editable_label_get_selection_bounds: * @label: a #EelEditableLabel * @start: return location for start of selection, as a character offset * @end: return location for end of selection, as a character offset * * Gets the selected range of characters in the label, returning %TRUE * if there's a selection. * * Return value: %TRUE if selection is non-empty **/ gboolean eel_editable_label_get_selection_bounds (EelEditableLabel *label, gint *start, gint *end) { gint start_index, end_index; gint start_offset, end_offset; gint len; g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), FALSE); start_index = MIN (label->selection_anchor, label->selection_end); end_index = MAX (label->selection_anchor, label->selection_end); len = strlen (label->text); if (end_index > len) end_index = len; if (start_index > len) start_index = len; start_offset = g_utf8_strlen (label->text, start_index); end_offset = g_utf8_strlen (label->text, end_index); if (start_offset > end_offset) { gint tmp = start_offset; start_offset = end_offset; end_offset = tmp; } if (start) *start = start_offset; if (end) *end = end_offset; return start_offset != end_offset; } /** * eel_editable_label_get_layout: * @label: a #EelEditableLabel * * Gets the #PangoLayout used to display the label. * The layout is useful to e.g. convert text positions to * pixel positions, in combination with eel_editable_label_get_layout_offsets(). * The returned layout is owned by the label so need not be * freed by the caller. * * Return value: the #PangoLayout for this label **/ PangoLayout* eel_editable_label_get_layout (EelEditableLabel *label) { g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), NULL); eel_editable_label_ensure_layout (label, TRUE); return label->layout; } /** * eel_editable_label_get_layout_offsets: * @label: a #EelEditableLabel * @x: location to store X offset of layout, or %NULL * @y: location to store Y offset of layout, or %NULL * * Obtains the coordinates where the label will draw the #PangoLayout * representing the text in the label; useful to convert mouse events * into coordinates inside the #PangoLayout, e.g. to take some action * if some part of the label is clicked. Of course you will need to * create a #GtkEventBox to receive the events, and pack the label * inside it, since labels are a #GTK_NO_WINDOW widget. Remember * when using the #PangoLayout functions you need to convert to * and from pixels using PANGO_PIXELS() or #PANGO_SCALE. * **/ void eel_editable_label_get_layout_offsets (EelEditableLabel *label, gint *x, gint *y) { g_return_if_fail (EEL_IS_EDITABLE_LABEL (label)); get_layout_location (label, x, y); } static void eel_editable_label_pend_cursor_blink (EelEditableLabel *label) { /* TODO */ } static void eel_editable_label_check_cursor_blink (EelEditableLabel *label) { /* TODO */ } static gint eel_editable_label_key_press (GtkWidget *widget, GdkEventKey *event) { EelEditableLabel *label = EEL_EDITABLE_LABEL (widget); eel_editable_label_pend_cursor_blink (label); if (gtk_im_context_filter_keypress (label->im_context, event)) { /*TODO eel_editable_label_obscure_mouse_cursor (label);*/ label->need_im_reset = TRUE; return TRUE; } if (GTK_WIDGET_CLASS (eel_editable_label_parent_class)->key_press_event (widget, event)) /* Activate key bindings */ return TRUE; return FALSE; } static gint eel_editable_label_key_release (GtkWidget *widget, GdkEventKey *event) { EelEditableLabel *label = EEL_EDITABLE_LABEL (widget); if (gtk_im_context_filter_keypress (label->im_context, event)) { label->need_im_reset = TRUE; return TRUE; } return GTK_WIDGET_CLASS (eel_editable_label_parent_class)->key_release_event (widget, event); } static void eel_editable_label_keymap_direction_changed (GdkKeymap *keymap, EelEditableLabel *label) { gtk_widget_queue_draw (GTK_WIDGET (label)); } static gint eel_editable_label_focus_in (GtkWidget *widget, GdkEventFocus *event) { EelEditableLabel *label = EEL_EDITABLE_LABEL (widget); gtk_widget_queue_draw (widget); label->need_im_reset = TRUE; gtk_im_context_focus_in (label->im_context); g_signal_connect (gdk_keymap_get_default (), "direction_changed", G_CALLBACK (eel_editable_label_keymap_direction_changed), label); eel_editable_label_check_cursor_blink (label); return FALSE; } static gint eel_editable_label_focus_out (GtkWidget *widget, GdkEventFocus *event) { EelEditableLabel *label = EEL_EDITABLE_LABEL (widget); gtk_widget_queue_draw (widget); label->need_im_reset = TRUE; gtk_im_context_focus_out (label->im_context); eel_editable_label_check_cursor_blink (label); g_signal_handlers_disconnect_by_func (gdk_keymap_get_default (), (gpointer) eel_editable_label_keymap_direction_changed, label); return FALSE; } static void eel_editable_label_delete_text (EelEditableLabel *label, int start_pos, int end_pos) { int anchor, end; if (start_pos < 0) start_pos = 0; if (end_pos < 0 || end_pos > label->n_bytes) end_pos = label->n_bytes; if (start_pos < end_pos) { g_memmove (label->text + start_pos, label->text + end_pos, label->n_bytes + 1 - end_pos); label->n_bytes -= (end_pos - start_pos); anchor = label->selection_anchor; if (anchor > start_pos) anchor -= MIN (anchor, end_pos) - start_pos; end = label->selection_end; if (end > start_pos) end -= MIN (end, end_pos) - start_pos; /* We might have changed the selection */ eel_editable_label_select_region_index (label, anchor, end); eel_editable_label_recompute (label); gtk_widget_queue_resize (GTK_WIDGET (label)); g_object_notify (G_OBJECT (label), "text"); g_signal_emit_by_name (GTK_EDITABLE (label), "changed"); } } static void eel_editable_label_insert_text (EelEditableLabel *label, const gchar *new_text, gint new_text_length, gint *index) { if (new_text_length + label->n_bytes + 1 > label->text_size) { while (new_text_length + label->n_bytes + 1 > label->text_size) { if (label->text_size == 0) label->text_size = 16; else label->text_size *= 2; } label->text = g_realloc (label->text, label->text_size); } g_object_freeze_notify (G_OBJECT (label)); g_memmove (label->text + *index + new_text_length, label->text + *index, label->n_bytes - *index); memcpy (label->text + *index, new_text, new_text_length); label->n_bytes += new_text_length; /* NUL terminate for safety and convenience */ label->text[label->n_bytes] = '\0'; g_object_notify (G_OBJECT (label), "text"); if (label->selection_anchor > *index) { g_object_notify (G_OBJECT (label), "cursor_position"); g_object_notify (G_OBJECT (label), "selection_bound"); label->selection_anchor += new_text_length; } if (label->selection_end > *index) { label->selection_end += new_text_length; g_object_notify (G_OBJECT (label), "selection_bound"); } *index += new_text_length; eel_editable_label_recompute (label); gtk_widget_queue_resize (GTK_WIDGET (label)); g_object_thaw_notify (G_OBJECT (label)); g_signal_emit_by_name (GTK_EDITABLE (label), "changed"); } /* Used for im_commit_cb and inserting Unicode chars */ static void eel_editable_label_enter_text (EelEditableLabel *label, const gchar *str) { GtkEditable *editable = GTK_EDITABLE (label); gint tmp_pos; gboolean old_need_im_reset; /* Never reset the im while commiting, as that resets possible im state */ old_need_im_reset = label->need_im_reset; label->need_im_reset = FALSE; if (label->selection_end != label->selection_anchor) gtk_editable_delete_selection (editable); else { if (label->overwrite_mode) eel_editable_label_delete_from_cursor (label, GTK_DELETE_CHARS, 1); } tmp_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); gtk_editable_insert_text (GTK_EDITABLE (label), str, strlen (str), &tmp_pos); tmp_pos = g_utf8_offset_to_pointer (label->text, tmp_pos) - label->text; eel_editable_label_select_region_index (label, tmp_pos, tmp_pos); label->need_im_reset = old_need_im_reset; } /* IM Context Callbacks */ static void eel_editable_label_commit_cb (GtkIMContext *context, const gchar *str, EelEditableLabel *label) { eel_editable_label_enter_text (label, str); } static void eel_editable_label_preedit_changed_cb (GtkIMContext *context, EelEditableLabel *label) { gchar *preedit_string; gint cursor_pos; gtk_im_context_get_preedit_string (label->im_context, &preedit_string, NULL, &cursor_pos); label->preedit_length = strlen (preedit_string); cursor_pos = CLAMP (cursor_pos, 0, g_utf8_strlen (preedit_string, -1)); label->preedit_cursor = cursor_pos; g_free (preedit_string); eel_editable_label_recompute (label); gtk_widget_queue_resize (GTK_WIDGET (label)); } static gboolean eel_editable_label_retrieve_surrounding_cb (GtkIMContext *context, EelEditableLabel *label) { gtk_im_context_set_surrounding (context, label->text, strlen (label->text) + 1, label->selection_end); return TRUE; } static gboolean eel_editable_label_delete_surrounding_cb (GtkIMContext *slave, gint offset, gint n_chars, EelEditableLabel *label) { gint current_pos; current_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); gtk_editable_delete_text (GTK_EDITABLE (label), current_pos + offset, current_pos + offset + n_chars); return TRUE; } static gboolean eel_editable_label_focus (GtkWidget *widget, GtkDirectionType direction) { /* We never want to be in the tab chain */ return FALSE; } /* Compute the X position for an offset that corresponds to the "more important * cursor position for that offset. We use this when trying to guess to which * end of the selection we should go to when the user hits the left or * right arrow key. */ static void get_better_cursor (EelEditableLabel *label, gint index, gint *x, gint *y) { GtkTextDirection keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; GtkTextDirection widget_direction = gtk_widget_get_direction (GTK_WIDGET (label)); gboolean split_cursor; PangoRectangle strong_pos, weak_pos; g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)), "gtk-split-cursor", &split_cursor, NULL); eel_editable_label_get_cursor_pos (label, &strong_pos, &weak_pos); if (split_cursor) { *x = strong_pos.x / PANGO_SCALE; *y = strong_pos.y / PANGO_SCALE; } else { if (keymap_direction == widget_direction) { *x = strong_pos.x / PANGO_SCALE; *y = strong_pos.y / PANGO_SCALE; } else { *x = weak_pos.x / PANGO_SCALE; *y = weak_pos.y / PANGO_SCALE; } } } static gint eel_editable_label_move_logically (EelEditableLabel *label, gint start, gint count) { gint offset = g_utf8_pointer_to_offset (label->text, label->text + start); if (label->text) { PangoLogAttr *log_attrs; gint n_attrs; gint length; eel_editable_label_ensure_layout (label, FALSE); length = g_utf8_strlen (label->text, -1); pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs); while (count > 0 && offset < length) { do offset++; while (offset < length && !log_attrs[offset].is_cursor_position); count--; } while (count < 0 && offset > 0) { do offset--; while (offset > 0 && !log_attrs[offset].is_cursor_position); count++; } g_free (log_attrs); } return g_utf8_offset_to_pointer (label->text, offset) - label->text; } static gint eel_editable_label_move_visually (EelEditableLabel *label, gint start, gint count) { gint index; index = start; while (count != 0) { int new_index, new_trailing; gboolean split_cursor; gboolean strong; eel_editable_label_ensure_layout (label, FALSE); g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)), "gtk-split-cursor", &split_cursor, NULL); if (split_cursor) strong = TRUE; else { GtkTextDirection keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; strong = keymap_direction == gtk_widget_get_direction (GTK_WIDGET (label)); } if (count > 0) { pango_layout_move_cursor_visually (label->layout, strong, index, 0, 1, &new_index, &new_trailing); count--; } else { pango_layout_move_cursor_visually (label->layout, strong, index, 0, -1, &new_index, &new_trailing); count++; } if (new_index < 0 || new_index == G_MAXINT) break; index = new_index; while (new_trailing--) index = g_utf8_next_char (label->text + new_index) - label->text; } return index; } static gint eel_editable_label_move_line (EelEditableLabel *label, gint start, gint count) { int n_lines, i; int x; PangoLayoutLine *line; int index; eel_editable_label_ensure_layout (label, FALSE); n_lines = pango_layout_get_line_count (label->layout); for (i = 0; i < n_lines; i++) { line = pango_layout_get_line (label->layout, i); if (start >= line->start_index && start <= line->start_index + line->length) { pango_layout_line_index_to_x (line, start, FALSE, &x); break; } } if (i == n_lines) i = n_lines - 1; i += count; i = CLAMP (i, 0, n_lines - 1); line = pango_layout_get_line (label->layout, i); if (pango_layout_line_x_to_index (line, x, &index, NULL)) return index; else { if (i == n_lines - 1) return line->start_index + line->length; else return line->start_index + line->length - 1; } } static gint eel_editable_label_move_forward_word (EelEditableLabel *label, gint start) { gint new_pos = g_utf8_pointer_to_offset (label->text, label->text + start); gint length; length = g_utf8_strlen (label->text, -1); if (new_pos < length) { PangoLogAttr *log_attrs; gint n_attrs; eel_editable_label_ensure_layout (label, FALSE); pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs); /* Find the next word end, (remember, n_attrs is one more than the number of of chars) */ new_pos++; while (new_pos < (n_attrs - 1) && !log_attrs[new_pos].is_word_end) new_pos++; g_free (log_attrs); } return g_utf8_offset_to_pointer (label->text, new_pos) - label->text; } static gint eel_editable_label_move_backward_word (EelEditableLabel *label, gint start) { gint new_pos = g_utf8_pointer_to_offset (label->text, label->text + start); if (new_pos > 0) { PangoLogAttr *log_attrs; gint n_attrs; eel_editable_label_ensure_layout (label, FALSE); pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs); new_pos -= 1; /* Find the previous word beginning */ while (new_pos > 0 && !log_attrs[new_pos].is_word_start) new_pos--; g_free (log_attrs); } return g_utf8_offset_to_pointer (label->text, new_pos) - label->text; } static void eel_editable_label_move_cursor (EelEditableLabel *label, GtkMovementStep step, gint count, gboolean extend_selection) { gint new_pos; new_pos = label->selection_end; if (label->selection_end != label->selection_anchor && !extend_selection) { /* If we have a current selection and aren't extending it, move to the * start/or end of the selection as appropriate */ switch (step) { case GTK_MOVEMENT_DISPLAY_LINES: case GTK_MOVEMENT_VISUAL_POSITIONS: { gint end_x, end_y; gint anchor_x, anchor_y; gboolean end_is_left; get_better_cursor (label, label->selection_end, &end_x, &end_y); get_better_cursor (label, label->selection_anchor, &anchor_x, &anchor_y); end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x); if (count < 0) new_pos = end_is_left ? label->selection_end : label->selection_anchor; else new_pos = !end_is_left ? label->selection_end : label->selection_anchor; break; } case GTK_MOVEMENT_LOGICAL_POSITIONS: case GTK_MOVEMENT_WORDS: if (count < 0) new_pos = MIN (label->selection_end, label->selection_anchor); else new_pos = MAX (label->selection_end, label->selection_anchor); break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: case GTK_MOVEMENT_PARAGRAPH_ENDS: case GTK_MOVEMENT_BUFFER_ENDS: /* FIXME: Can do better here */ new_pos = count < 0 ? 0 : strlen (label->text); break; case GTK_MOVEMENT_PARAGRAPHS: case GTK_MOVEMENT_PAGES: break; default: g_assert_not_reached (); break; } } else { switch (step) { case GTK_MOVEMENT_LOGICAL_POSITIONS: new_pos = eel_editable_label_move_logically (label, new_pos, count); break; case GTK_MOVEMENT_VISUAL_POSITIONS: new_pos = eel_editable_label_move_visually (label, new_pos, count); break; case GTK_MOVEMENT_WORDS: while (count > 0) { new_pos = eel_editable_label_move_forward_word (label, new_pos); count--; } while (count < 0) { new_pos = eel_editable_label_move_backward_word (label, new_pos); count++; } break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: case GTK_MOVEMENT_PARAGRAPH_ENDS: case GTK_MOVEMENT_BUFFER_ENDS: /* FIXME: Can do better here */ new_pos = count < 0 ? 0 : strlen (label->text); break; case GTK_MOVEMENT_DISPLAY_LINES: new_pos = eel_editable_label_move_line (label, new_pos, count); break; break; case GTK_MOVEMENT_PARAGRAPHS: case GTK_MOVEMENT_PAGES: break; default: g_assert_not_reached (); break; } } if (extend_selection) eel_editable_label_select_region_index (label, label->selection_anchor, new_pos); else eel_editable_label_select_region_index (label, new_pos, new_pos); } static void eel_editable_label_reset_im_context (EelEditableLabel *label) { if (label->need_im_reset) { label->need_im_reset = 0; gtk_im_context_reset (label->im_context); } } static void eel_editable_label_delete_from_cursor (EelEditableLabel *label, GtkDeleteType type, gint count) { GtkEditable *editable = GTK_EDITABLE (label); gint start_pos = label->selection_anchor; gint end_pos = label->selection_anchor; eel_editable_label_reset_im_context (label); if (label->selection_anchor != label->selection_end) { gtk_editable_delete_selection (editable); return; } switch (type) { case GTK_DELETE_CHARS: end_pos = eel_editable_label_move_logically (label, start_pos, count); start_pos = g_utf8_pointer_to_offset (label->text, label->text + start_pos); end_pos = g_utf8_pointer_to_offset (label->text, label->text + end_pos); gtk_editable_delete_text (GTK_EDITABLE (label), MIN (start_pos, end_pos), MAX (start_pos, end_pos)); break; case GTK_DELETE_WORDS: if (count < 0) { /* Move to end of current word, or if not on a word, end of previous word */ end_pos = eel_editable_label_move_backward_word (label, end_pos); end_pos = eel_editable_label_move_forward_word (label, end_pos); } else if (count > 0) { /* Move to beginning of current word, or if not on a word, begining of next word */ start_pos = eel_editable_label_move_forward_word (label, start_pos); start_pos = eel_editable_label_move_backward_word (label, start_pos); } /* Fall through */ case GTK_DELETE_WORD_ENDS: while (count < 0) { start_pos = eel_editable_label_move_backward_word (label, start_pos); count++; } while (count > 0) { end_pos = eel_editable_label_move_forward_word (label, end_pos); count--; } start_pos = g_utf8_pointer_to_offset (label->text, label->text + start_pos); end_pos = g_utf8_pointer_to_offset (label->text, label->text + end_pos); gtk_editable_delete_text (GTK_EDITABLE (label), start_pos, end_pos); break; case GTK_DELETE_DISPLAY_LINE_ENDS: case GTK_DELETE_PARAGRAPH_ENDS: end_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); if (count < 0) gtk_editable_delete_text (GTK_EDITABLE (label), 0, end_pos); else gtk_editable_delete_text (GTK_EDITABLE (label), end_pos, -1); break; case GTK_DELETE_DISPLAY_LINES: case GTK_DELETE_PARAGRAPHS: gtk_editable_delete_text (GTK_EDITABLE (label), 0, -1); break; case GTK_DELETE_WHITESPACE: /* TODO eel_editable_label_delete_whitespace (label); */ break; } eel_editable_label_pend_cursor_blink (label); } static void eel_editable_label_copy_clipboard (EelEditableLabel *label) { if (label->text) { gint start, end; gint len; start = MIN (label->selection_anchor, label->selection_end); end = MAX (label->selection_anchor, label->selection_end); len = strlen (label->text); if (end > len) end = len; if (start > len) start = len; if (start != end) gtk_clipboard_set_text (gtk_clipboard_get (GDK_SELECTION_CLIPBOARD), label->text + start, end - start); } } static void eel_editable_label_cut_clipboard (EelEditableLabel *label) { if (label->text) { gint start, end; gint len; start = MIN (label->selection_anchor, label->selection_end); end = MAX (label->selection_anchor, label->selection_end); len = strlen (label->text); if (end > len) end = len; if (start > len) start = len; if (start != end) { gtk_clipboard_set_text (gtk_clipboard_get (GDK_SELECTION_CLIPBOARD), label->text + start, end - start); start = g_utf8_pointer_to_offset (label->text, label->text + start); end = g_utf8_pointer_to_offset (label->text, label->text + end); gtk_editable_delete_text (GTK_EDITABLE (label), start, end); } } } static void paste_received (GtkClipboard *clipboard, const gchar *text, gpointer data) { EelEditableLabel *label = EEL_EDITABLE_LABEL (data); GtkEditable *editable = GTK_EDITABLE (label); gint tmp_pos; if (text) { if (label->selection_end != label->selection_anchor) gtk_editable_delete_selection (editable); tmp_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); gtk_editable_insert_text (GTK_EDITABLE (label), text, strlen (text), &tmp_pos); tmp_pos = g_utf8_offset_to_pointer (label->text, tmp_pos) - label->text; eel_editable_label_select_region_index (label, tmp_pos, tmp_pos); } g_object_unref (G_OBJECT (label)); } static void eel_editable_label_paste (EelEditableLabel *label, GdkAtom selection) { g_object_ref (G_OBJECT (label)); gtk_clipboard_request_text (gtk_widget_get_clipboard (GTK_WIDGET (label), selection), paste_received, label); } static void eel_editable_label_paste_clipboard (EelEditableLabel *label) { eel_editable_label_paste (label, GDK_NONE); } static void eel_editable_label_select_all (EelEditableLabel *label) { eel_editable_label_select_region_index (label, 0, strlen (label->text)); } /* Quick hack of a popup menu */ static void activate_cb (GtkWidget *menuitem, EelEditableLabel *label) { const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal"); g_signal_emit_by_name (GTK_OBJECT (label), signal); } static void append_action_signal (EelEditableLabel *label, GtkWidget *menu, const gchar *stock_id, const gchar *signal, gboolean sensitive) { GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL); g_object_set_data (G_OBJECT (menuitem), "gtk-signal", (char *)signal); g_signal_connect (menuitem, "activate", G_CALLBACK (activate_cb), label); gtk_widget_set_sensitive (menuitem, sensitive); gtk_widget_show (menuitem); gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem); } static void popup_menu_detach (GtkWidget *attach_widget, GtkMenu *menu) { EelEditableLabel *label; label = EEL_EDITABLE_LABEL (attach_widget); label->popup_menu = NULL; } static void popup_position_func (GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer user_data) { EelEditableLabel *label; GtkWidget *widget; GtkRequisition req; GtkAllocation allocation; label = EEL_EDITABLE_LABEL (user_data); widget = GTK_WIDGET (label); g_assert (gtk_widget_get_realized (widget)); gdk_window_get_origin (gtk_widget_get_window (widget), x, y); /*gtk_widget_size_request (label->popup_menu, &req);*/ gtk_widget_get_requisition (widget, &req); gtk_widget_get_allocation (widget, &allocation); *x += allocation.width / 2; *y += allocation.height; *x = CLAMP (*x, 0, MAX (0, gdk_screen_width () - req.width)); *y = CLAMP (*y, 0, MAX (0, gdk_screen_height () - req.height)); } static void eel_editable_label_toggle_overwrite (EelEditableLabel *label) { label->overwrite_mode = !label->overwrite_mode; gtk_widget_queue_draw (GTK_WIDGET (label)); } typedef struct { EelEditableLabel *label; gint button; guint time; } PopupInfo; static void popup_targets_received (GtkClipboard *clipboard, GtkSelectionData *data, gpointer user_data) { GtkWidget *menuitem, *submenu; gboolean have_selection; gboolean clipboard_contains_text; PopupInfo *info; EelEditableLabel *label; info = user_data; label = info->label; if (gtk_widget_get_realized (GTK_WIDGET (label))) { if (label->popup_menu) gtk_widget_destroy (label->popup_menu); label->popup_menu = gtk_menu_new (); gtk_menu_attach_to_widget (GTK_MENU (label->popup_menu), GTK_WIDGET (label), popup_menu_detach); have_selection = label->selection_anchor != label->selection_end; clipboard_contains_text = gtk_selection_data_targets_include_text (data); append_action_signal (label, label->popup_menu, GTK_STOCK_CUT, "cut_clipboard", have_selection); append_action_signal (label, label->popup_menu, GTK_STOCK_COPY, "copy_clipboard", have_selection); append_action_signal (label, label->popup_menu, GTK_STOCK_PASTE, "paste_clipboard", clipboard_contains_text); menuitem = gtk_menu_item_new_with_label (_("Select All")); g_signal_connect_object (menuitem, "activate", G_CALLBACK (eel_editable_label_select_all), label, G_CONNECT_SWAPPED); gtk_widget_show (menuitem); gtk_menu_shell_append (GTK_MENU_SHELL (label->popup_menu), menuitem); menuitem = gtk_separator_menu_item_new (); gtk_widget_show (menuitem); gtk_menu_shell_append (GTK_MENU_SHELL (label->popup_menu), menuitem); menuitem = gtk_menu_item_new_with_label (_("Input Methods")); gtk_widget_show (menuitem); submenu = gtk_menu_new (); gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu); gtk_menu_shell_append (GTK_MENU_SHELL (label->popup_menu), menuitem); gtk_im_multicontext_append_menuitems (GTK_IM_MULTICONTEXT (label->im_context), GTK_MENU_SHELL (submenu)); g_signal_emit (GTK_OBJECT (label), signals[POPULATE_POPUP], 0, label->popup_menu); if (info->button) gtk_menu_popup (GTK_MENU (label->popup_menu), NULL, NULL, NULL, NULL, info->button, info->time); else { gtk_menu_popup (GTK_MENU (label->popup_menu), NULL, NULL, popup_position_func, label, info->button, info->time); gtk_menu_shell_select_first (GTK_MENU_SHELL (label->popup_menu), FALSE); } } g_object_unref (label); g_free (info); } static void eel_editable_label_do_popup (EelEditableLabel *label, GdkEventButton *event) { PopupInfo *info = g_new (PopupInfo, 1); /* In order to know what entries we should make sensitive, we * ask for the current targets of the clipboard, and when * we get them, then we actually pop up the menu. */ info->label = g_object_ref (label); if (event) { info->button = event->button; info->time = event->time; } else { info->button = 0; info->time = gtk_get_current_event_time (); } gtk_clipboard_request_contents (gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD), gdk_atom_intern ("TARGETS", FALSE), popup_targets_received, info); } /************ Editable implementation ****************/ static void editable_insert_text_emit (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); gchar buf[64]; gchar *text; int text_length; text_length = g_utf8_strlen (label->text, -1); if (*position < 0 || *position > text_length) *position = text_length; g_object_ref (G_OBJECT (editable)); if (new_text_length <= 63) text = buf; else text = g_new (gchar, new_text_length + 1); text[new_text_length] = '\0'; strncpy (text, new_text, new_text_length); g_signal_emit_by_name (editable, "insert_text", text, new_text_length, position); if (new_text_length > 63) g_free (text); g_object_unref (G_OBJECT (editable)); } static void editable_delete_text_emit (GtkEditable *editable, gint start_pos, gint end_pos) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); int text_length; text_length = g_utf8_strlen (label->text, -1); if (end_pos < 0 || end_pos > text_length) end_pos = text_length; if (start_pos < 0) start_pos = 0; if (start_pos > end_pos) start_pos = end_pos; g_object_ref (G_OBJECT (editable)); g_signal_emit_by_name (editable, "delete_text", start_pos, end_pos); g_object_unref (G_OBJECT (editable)); } static void editable_insert_text (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); gint index; if (new_text_length < 0) new_text_length = strlen (new_text); index = g_utf8_offset_to_pointer (label->text, *position) - label->text; eel_editable_label_insert_text (label, new_text, new_text_length, &index); *position = g_utf8_pointer_to_offset (label->text, label->text + index); } static void editable_delete_text (GtkEditable *editable, gint start_pos, gint end_pos) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); int text_length; gint start_index, end_index; text_length = g_utf8_strlen (label->text, -1); if (end_pos < 0 || end_pos > text_length) end_pos = text_length; if (start_pos < 0) start_pos = 0; if (start_pos > end_pos) start_pos = end_pos; start_index = g_utf8_offset_to_pointer (label->text, start_pos) - label->text; end_index = g_utf8_offset_to_pointer (label->text, end_pos) - label->text; eel_editable_label_delete_text (label, start_index, end_index); } static gchar * editable_get_chars (GtkEditable *editable, gint start_pos, gint end_pos) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); int text_length; gint start_index, end_index; text_length = g_utf8_strlen (label->text, -1); if (end_pos < 0 || end_pos > text_length) end_pos = text_length; if (start_pos < 0) start_pos = 0; if (start_pos > end_pos) start_pos = end_pos; start_index = g_utf8_offset_to_pointer (label->text, start_pos) - label->text; end_index = g_utf8_offset_to_pointer (label->text, end_pos) - label->text; return g_strndup (label->text + start_index, end_index - start_index); } static void editable_set_selection_bounds (GtkEditable *editable, gint start, gint end) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); int text_length; gint start_index, end_index; text_length = g_utf8_strlen (label->text, -1); if (end < 0 || end > text_length) end = text_length; if (start < 0) start = text_length; if (start > text_length) start = text_length; eel_editable_label_reset_im_context (label); start_index = g_utf8_offset_to_pointer (label->text, start) - label->text; end_index = g_utf8_offset_to_pointer (label->text, end) - label->text; eel_editable_label_select_region_index (label, start_index, end_index); } static gboolean editable_get_selection_bounds (GtkEditable *editable, gint *start, gint *end) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); *start = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); *end = g_utf8_pointer_to_offset (label->text, label->text + label->selection_end); return (label->selection_anchor != label->selection_end); } static void editable_real_set_position (GtkEditable *editable, gint position) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); int text_length; int index; text_length = g_utf8_strlen (label->text, -1); if (position < 0 || position > text_length) position = text_length; index = g_utf8_offset_to_pointer (label->text, position) - label->text; if (index != label->selection_anchor || index != label->selection_end) { eel_editable_label_select_region_index (label, index, index); } } static gint editable_get_position (GtkEditable *editable) { EelEditableLabel *label = EEL_EDITABLE_LABEL (editable); return g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor); } static AtkObjectClass *a11y_parent_class = NULL; static const char* eel_editable_label_accessible_data = "eel-editable-label-accessible-data"; /************ Accessible implementation ****************/ typedef struct { GailTextUtil *textutil; gint selection_anchor; gint selection_end; gchar *signal_name; gint position; gint length; } EelEditableLabelAccessiblePrivate; typedef struct { EelEditableLabel* label; gint position; } EelEditableLabelAccessiblePaste; static gchar* eel_editable_label_accessible_get_text (AtkText *text, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabelAccessiblePrivate *priv; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data); return gail_text_util_get_substring (priv->textutil, start_pos, end_pos); } static gunichar eel_editable_label_accessible_get_character_at_offset (AtkText *text, gint offset) { GtkWidget *widget; EelEditableLabelAccessiblePrivate *priv; gchar *string; gchar *index; gunichar unichar; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return '\0'; priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data); string = gail_text_util_get_substring (priv->textutil, 0, -1); if (offset >= g_utf8_strlen (string, -1)) { unichar = '\0'; } else { index = g_utf8_offset_to_pointer (string, offset); unichar = g_utf8_get_char(index); } g_free(string); return unichar; } static gchar* eel_editable_label_accessible_get_text_before_offset (AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset) { GtkWidget *widget; EelEditableLabel *label; EelEditableLabelAccessiblePrivate *priv; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; label = EEL_EDITABLE_LABEL (widget); priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data); return gail_text_util_get_text (priv->textutil, eel_editable_label_get_layout (label), GAIL_BEFORE_OFFSET, boundary_type, offset, start_offset, end_offset); } static gchar* eel_editable_label_accessible_get_text_at_offset (AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset) { GtkWidget *widget; EelEditableLabel *label; EelEditableLabelAccessiblePrivate *priv; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; label = EEL_EDITABLE_LABEL (widget); priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data); return gail_text_util_get_text (priv->textutil, eel_editable_label_get_layout (label), GAIL_AT_OFFSET, boundary_type, offset, start_offset, end_offset); } static gchar* eel_editable_label_accessible_get_text_after_offset (AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset) { GtkWidget *widget; EelEditableLabel *label; EelEditableLabelAccessiblePrivate *priv; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; label = EEL_EDITABLE_LABEL (widget); priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data); return gail_text_util_get_text (priv->textutil, eel_editable_label_get_layout (label), GAIL_AFTER_OFFSET, boundary_type, offset, start_offset, end_offset); } static gint eel_editable_label_accessible_get_caret_offset (AtkText *text) { GtkWidget *widget; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return 0; return gtk_editable_get_position (GTK_EDITABLE (widget)); } static gboolean eel_editable_label_accessible_set_caret_offset (AtkText *text, gint offset) { GtkWidget *widget; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return FALSE; gtk_editable_set_position (GTK_EDITABLE (widget), offset); return TRUE; } static gint eel_editable_label_accessible_get_character_count (AtkText *text) { GtkWidget *widget; EelEditableLabel *label; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return 0; label = EEL_EDITABLE_LABEL (widget); return g_utf8_strlen (eel_editable_label_get_text (label), -1); } static gint eel_editable_label_accessible_get_n_selections (AtkText *text) { GtkWidget *widget; EelEditableLabel *label; gint select_start, select_end; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return -1; label = EEL_EDITABLE_LABEL (widget); gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start, &select_end); if (select_start != select_end) return 1; else return 0; } static gchar* eel_editable_label_accessible_get_selection (AtkText *text, gint selection_num, gint *start_pos, gint *end_pos) { GtkWidget *widget; EelEditableLabel *label; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; /* Only let the user get the selection if one is set, and if the * selection_num is 0. */ if (selection_num != 0) return NULL; label = EEL_EDITABLE_LABEL (widget); gtk_editable_get_selection_bounds (GTK_EDITABLE (label), start_pos, end_pos); if (*start_pos != *end_pos) return gtk_editable_get_chars (GTK_EDITABLE (label), *start_pos, *end_pos); else return NULL; } static gboolean eel_editable_label_accessible_add_selection (AtkText *text, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabel *label; gint select_start, select_end; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return FALSE; label = EEL_EDITABLE_LABEL (widget); gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start, &select_end); /* If there is already a selection, then don't allow another to be added, * since EelEditableLabel only supports one selected region. */ if (select_start == select_end) { gtk_editable_select_region (GTK_EDITABLE (label), start_pos, end_pos); return TRUE; } else return FALSE; } static gboolean eel_editable_label_accessible_remove_selection (AtkText *text, gint selection_num) { GtkWidget *widget; EelEditableLabel *label; gint select_start, select_end, caret_pos; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return FALSE; if (selection_num != 0) return FALSE; label = EEL_EDITABLE_LABEL (widget); gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start, &select_end); if (select_start != select_end) { /* Setting the start & end of the selected region to the caret position * turns off the selection. */ caret_pos = gtk_editable_get_position (GTK_EDITABLE (label)); gtk_editable_select_region (GTK_EDITABLE (label), caret_pos, caret_pos); return TRUE; } else return FALSE; } static gboolean eel_editable_label_accessible_set_selection (AtkText *text, gint selection_num, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabel *label; gint select_start, select_end; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return FALSE; /* Only let the user move the selection if one is set, and if the * selection_num is 0 */ if (selection_num != 0) return FALSE; label = EEL_EDITABLE_LABEL (widget); gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start, &select_end); if (select_start != select_end) { gtk_editable_select_region (GTK_EDITABLE (label), start_pos, end_pos); return TRUE; } else return FALSE; } static AtkAttributeSet* eel_editable_label_accessible_get_run_attributes (AtkText *text, gint offset, gint *start_offset, gint *end_offset) { GtkWidget *widget; EelEditableLabel *label; AtkAttributeSet *at_set = NULL; GtkTextDirection dir; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; label = EEL_EDITABLE_LABEL (widget); dir = gtk_widget_get_direction (widget); if (dir == GTK_TEXT_DIR_RTL) { at_set = gail_misc_add_attribute (at_set, ATK_TEXT_ATTR_DIRECTION, g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir))); } at_set = gail_misc_layout_get_run_attributes (at_set, eel_editable_label_get_layout (label), label->text, offset, start_offset, end_offset); return at_set; } static AtkAttributeSet* eel_editable_label_accessible_get_default_attributes (AtkText *text) { GtkWidget *widget; EelEditableLabel *label; AtkAttributeSet *at_set = NULL; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return NULL; label = EEL_EDITABLE_LABEL (widget); at_set = gail_misc_get_default_attributes (at_set, eel_editable_label_get_layout (label), widget); return at_set; } static void eel_editable_label_accessible_get_character_extents (AtkText *text, gint offset, gint *x, gint *y, gint *width, gint *height, AtkCoordType coords) { GtkWidget *widget; EelEditableLabel *label; PangoRectangle char_rect; gint index, cursor_index, x_layout, y_layout; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); eel_editable_label_get_layout_offsets (label, &x_layout, &y_layout); index = g_utf8_offset_to_pointer (label->text, offset) - label->text; cursor_index = label->selection_anchor; if (index > cursor_index) index += label->preedit_length; pango_layout_index_to_pos (eel_editable_label_get_layout(label), index, &char_rect); gail_misc_get_extents_from_pango_rectangle (widget, &char_rect, x_layout, y_layout, x, y, width, height, coords); } static gint eel_editable_label_accessible_get_offset_at_point (AtkText *text, gint x, gint y, AtkCoordType coords) { GtkWidget *widget; EelEditableLabel *label; gint index, cursor_index, x_layout, y_layout; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return -1; label = EEL_EDITABLE_LABEL (widget); eel_editable_label_get_layout_offsets (label, &x_layout, &y_layout); index = gail_misc_get_index_at_point_in_layout (widget, eel_editable_label_get_layout(label), x_layout, y_layout, x, y, coords); if (index == -1) { if (coords == ATK_XY_SCREEN || coords == ATK_XY_WINDOW) return g_utf8_strlen (label->text, -1); return index; } else { cursor_index = label->selection_anchor; if (index >= cursor_index && label->preedit_length) { if (index >= cursor_index + label->preedit_length) index -= label->preedit_length; else index = cursor_index; } return g_utf8_pointer_to_offset (label->text, label->text + index); } } static void atk_text_interface_init (AtkTextIface *iface) { g_assert (iface != NULL); iface->get_text = eel_editable_label_accessible_get_text; iface->get_character_at_offset = eel_editable_label_accessible_get_character_at_offset; iface->get_text_before_offset = eel_editable_label_accessible_get_text_before_offset; iface->get_text_at_offset = eel_editable_label_accessible_get_text_at_offset; iface->get_text_after_offset = eel_editable_label_accessible_get_text_after_offset; iface->get_caret_offset = eel_editable_label_accessible_get_caret_offset; iface->set_caret_offset = eel_editable_label_accessible_set_caret_offset; iface->get_character_count = eel_editable_label_accessible_get_character_count; iface->get_n_selections = eel_editable_label_accessible_get_n_selections; iface->get_selection = eel_editable_label_accessible_get_selection; iface->add_selection = eel_editable_label_accessible_add_selection; iface->remove_selection = eel_editable_label_accessible_remove_selection; iface->set_selection = eel_editable_label_accessible_set_selection; iface->get_run_attributes = eel_editable_label_accessible_get_run_attributes; iface->get_default_attributes = eel_editable_label_accessible_get_default_attributes; iface->get_character_extents = eel_editable_label_accessible_get_character_extents; iface->get_offset_at_point = eel_editable_label_accessible_get_offset_at_point; } static void eel_editable_label_accessible_set_text_contents (AtkEditableText *text, const gchar *string) { GtkWidget *widget; EelEditableLabel *label; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); eel_editable_label_set_text (label, string); } static void eel_editable_label_accessible_insert_text (AtkEditableText *text, const gchar *string, gint length, gint *position) { GtkWidget *widget; EelEditableLabel *label; GtkEditable *editable; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); editable = GTK_EDITABLE (label); gtk_editable_insert_text (editable, string, length, position); } static void eel_editable_label_accessible_copy_text (AtkEditableText *text, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabel *label; GtkEditable *editable; gchar *str; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); editable = GTK_EDITABLE (label); str = gtk_editable_get_chars (editable, start_pos, end_pos); gtk_clipboard_set_text (gtk_clipboard_get (GDK_NONE), str, -1); } static void eel_editable_label_accessible_cut_text (AtkEditableText *text, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabel *label; GtkEditable *editable; gchar *str; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); editable = GTK_EDITABLE (label); str = gtk_editable_get_chars (editable, start_pos, end_pos); gtk_clipboard_set_text (gtk_clipboard_get (GDK_NONE), str, -1); gtk_editable_delete_text (editable, start_pos, end_pos); } static void eel_editable_label_accessible_delete_text (AtkEditableText *text, gint start_pos, gint end_pos) { GtkWidget *widget; EelEditableLabel *label; GtkEditable *editable; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; label = EEL_EDITABLE_LABEL (widget); editable = GTK_EDITABLE (label); gtk_editable_delete_text (editable, start_pos, end_pos); } static void eel_editable_label_accessible_paste_received (GtkClipboard *clipboard, const gchar *text, gpointer data) { EelEditableLabelAccessiblePaste* paste_struct = (EelEditableLabelAccessiblePaste *)data; if (text) gtk_editable_insert_text (GTK_EDITABLE (paste_struct->label), text, -1, &(paste_struct->position)); g_object_unref (paste_struct->label); } static void eel_editable_label_accessible_paste_text (AtkEditableText *text, gint position) { GtkWidget *widget; GtkEditable *editable; EelEditableLabelAccessiblePaste paste_struct; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); if (widget == NULL) /* State is defunct */ return; editable = GTK_EDITABLE (widget); if (!gtk_editable_get_editable (editable)) return; paste_struct.label = EEL_EDITABLE_LABEL (widget); paste_struct.position = position; g_object_ref (paste_struct.label); gtk_clipboard_request_text (gtk_clipboard_get (GDK_NONE), eel_editable_label_accessible_paste_received, &paste_struct); } static void atk_editable_text_interface_init (AtkEditableTextIface *iface) { g_assert (iface != NULL); iface->set_text_contents = eel_editable_label_accessible_set_text_contents; iface->insert_text = eel_editable_label_accessible_insert_text; iface->copy_text = eel_editable_label_accessible_copy_text; iface->cut_text = eel_editable_label_accessible_cut_text; iface->delete_text = eel_editable_label_accessible_delete_text; iface->paste_text = eel_editable_label_accessible_paste_text; } static void eel_editable_label_accessible_notify_insert (AtkObject *accessible) { EelEditableLabelAccessiblePrivate *priv; priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data); if (priv->signal_name) { g_signal_emit_by_name (accessible, priv->signal_name, priv->position, priv->length); priv->signal_name = NULL; } } static gboolean eel_editable_label_accessible_idle_notify_insert (gpointer data) { eel_editable_label_accessible_notify_insert (data); return FALSE; } /* Note arg1 returns the character at the start of the insert. * arg2 returns the number of characters inserted. */ static void eel_editable_label_accessible_insert_text_cb (EelEditableLabel *label, gchar *arg1, gint arg2, gpointer arg3) { AtkObject *accessible; EelEditableLabelAccessiblePrivate *priv; gint *position = (gint *) arg3; accessible = gtk_widget_get_accessible (GTK_WIDGET (label)); priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data); if (!priv->signal_name) { priv->signal_name = "text_changed::insert"; priv->position = *position; priv->length = arg2; } /* * The signal will be emitted when the cursor position is updated. * or in an idle handler if it not updated. */ g_idle_add (eel_editable_label_accessible_idle_notify_insert, accessible); } /* Note arg1 returns the start of the delete range, arg2 returns the * end of the delete range if multiple characters are deleted. */ static void eel_editable_label_accessible_delete_text_cb (EelEditableLabel *label, gint arg1, gint arg2) { AtkObject *accessible; accessible = gtk_widget_get_accessible (GTK_WIDGET (label)); /* * Zero length text deleted so ignore */ if (arg2 - arg1 == 0) return; g_signal_emit_by_name (accessible, "text_changed::delete", arg1, arg2 - arg1); } static void eel_editable_label_accessible_changed_cb (EelEditableLabel *label) { AtkObject *accessible; EelEditableLabelAccessiblePrivate *priv; accessible = gtk_widget_get_accessible (GTK_WIDGET (label)); priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data); gail_text_util_text_setup (priv->textutil, eel_editable_label_get_text (label)); } static gboolean check_for_selection_change (AtkObject *accessible, GtkWidget *widget) { EelEditableLabelAccessiblePrivate *priv; EelEditableLabel *label; gboolean ret_val = FALSE; priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data); label = EEL_EDITABLE_LABEL (widget); if (label->selection_anchor != label->selection_end) { if (label->selection_anchor != priv->selection_anchor || label->selection_end != priv->selection_end) /* * This check is here as this function can be called * for notification of selection_end and selection_anchor. * The values of selection_anchor and selection_end may be the same * for both notifications and we only want to generate one * text_selection_changed signal. */ ret_val = TRUE; } else { /* We had a selection */ ret_val = (priv->selection_anchor != priv->selection_end); } priv->selection_anchor = label->selection_anchor; priv->selection_end = label->selection_end; return ret_val; } static void eel_editable_label_accessible_notify_gtk (GObject *obj, GParamSpec *pspec) { GtkWidget *widget; AtkObject *accessible; EelEditableLabel *label; widget = GTK_WIDGET (obj); label = EEL_EDITABLE_LABEL (widget); accessible = gtk_widget_get_accessible (widget); if (strcmp (pspec->name, "cursor-position") == 0) { eel_editable_label_accessible_notify_insert (accessible); if (check_for_selection_change (accessible, widget)) g_signal_emit_by_name (accessible, "text_selection_changed"); /* * The label cursor position has moved so generate the signal. */ g_signal_emit_by_name (accessible, "text_caret_moved", g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor)); } else if (strcmp (pspec->name, "selection-bound") == 0) { eel_editable_label_accessible_notify_insert (accessible); if (check_for_selection_change (accessible, widget)) g_signal_emit_by_name (accessible, "text_selection_changed"); } } static void eel_editable_label_accessible_initialize (AtkObject *accessible, gpointer widget) { EelEditableLabelAccessiblePrivate *priv; EelEditableLabel *label; a11y_parent_class->initialize (accessible, widget); label = EEL_EDITABLE_LABEL (widget); priv = g_new0 (EelEditableLabelAccessiblePrivate, 1); priv->textutil = gail_text_util_new (); gail_text_util_text_setup (priv->textutil, eel_editable_label_get_text (EEL_EDITABLE_LABEL (widget))); priv->selection_anchor = label->selection_anchor; priv->selection_end = label->selection_end; g_object_set_data (G_OBJECT (accessible), eel_editable_label_accessible_data, priv); g_signal_connect (widget, "insert-text", G_CALLBACK (eel_editable_label_accessible_insert_text_cb), NULL); g_signal_connect (widget, "delete-text", G_CALLBACK (eel_editable_label_accessible_delete_text_cb), NULL); g_signal_connect (widget, "changed", G_CALLBACK (eel_editable_label_accessible_changed_cb), NULL); g_signal_connect (widget, "notify", G_CALLBACK (eel_editable_label_accessible_notify_gtk), NULL); atk_object_set_role (accessible, ATK_ROLE_TEXT); } static const gchar* eel_editable_label_accessible_get_name(AtkObject* accessible) { if (accessible->name != NULL) { return accessible->name; } else { GtkWidget* widget; widget = gtk_accessible_get_widget(GTK_ACCESSIBLE(accessible)); if (widget == NULL) { /* State is defunct */ return NULL; } g_assert(EEL_IS_EDITABLE_LABEL(widget)); return eel_editable_label_get_text(EEL_EDITABLE_LABEL(widget)); } } static AtkStateSet* eel_editable_label_accessible_ref_state_set (AtkObject *accessible) { AtkStateSet *state_set; GtkWidget *widget; state_set = a11y_parent_class->ref_state_set (accessible); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible)); if (widget == NULL) return state_set; atk_state_set_add_state (state_set, ATK_STATE_EDITABLE); atk_state_set_add_state (state_set, ATK_STATE_MULTI_LINE); return state_set; } static void eel_editable_label_accessible_finalize (GObject *object) { EelEditableLabelAccessiblePrivate *priv; priv = g_object_get_data (object, eel_editable_label_accessible_data); g_object_unref (priv->textutil); g_free (priv); G_OBJECT_CLASS (a11y_parent_class)->finalize (object); } static void eel_editable_label_accessible_class_init (AtkObjectClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); a11y_parent_class = g_type_class_peek_parent (klass); klass->initialize = eel_editable_label_accessible_initialize; klass->get_name = eel_editable_label_accessible_get_name; klass->ref_state_set = eel_editable_label_accessible_ref_state_set; gobject_class->finalize = eel_editable_label_accessible_finalize; } static AtkObject * eel_editable_label_get_accessible (GtkWidget *widget) { static GType type = 0; AtkObject *accessible; if ((accessible = eel_accessibility_get_atk_object (widget))) return accessible; if (!type) { const GInterfaceInfo atk_editable_text_info = { (GInterfaceInitFunc) atk_editable_text_interface_init, (GInterfaceFinalizeFunc) NULL, NULL }; const GInterfaceInfo atk_text_info = { (GInterfaceInitFunc) atk_text_interface_init, (GInterfaceFinalizeFunc) NULL, NULL }; type = eel_accessibility_create_derived_type ("EelEditableLabelAccessible", G_TYPE_FROM_INSTANCE (widget), eel_editable_label_accessible_class_init); if (!type) return NULL; g_type_add_interface_static (type, ATK_TYPE_EDITABLE_TEXT, &atk_editable_text_info); g_type_add_interface_static (type, ATK_TYPE_TEXT, &atk_text_info); } accessible = g_object_new (type, NULL); return eel_accessibility_set_atk_object_return (widget, accessible); }