diff options
Diffstat (limited to 'libmisc/ev-page-action-widget.c')
| -rw-r--r-- | libmisc/ev-page-action-widget.c | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/libmisc/ev-page-action-widget.c b/libmisc/ev-page-action-widget.c new file mode 100644 index 00000000..2bc74e60 --- /dev/null +++ b/libmisc/ev-page-action-widget.c @@ -0,0 +1,495 @@ +/* + * Copyright (C) 2003, 2004 Marco Pesenti Gritti + * Copyright (C) 2003, 2004 Christian Persch + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" + +#include <string.h> +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +#include <evince-document.h> +#include "ev-page-action.h" +#include "ev-page-action-widget.h" + +/* Widget we pass back */ +static void ev_page_action_widget_init (EvPageActionWidget *action_widget); +static void ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget); + +enum +{ + WIDGET_ACTIVATE_LINK, + WIDGET_N_SIGNALS +}; + +struct _EvPageActionWidget +{ + GtkToolItem parent; + + EvDocument *document; + EvDocumentModel *doc_model; + + GtkWidget *entry; + GtkWidget *label; + guint signal_id; + GtkTreeModel *filter_model; + GtkTreeModel *model; +}; + +static guint widget_signals[WIDGET_N_SIGNALS] = {0, }; + +G_DEFINE_TYPE (EvPageActionWidget, ev_page_action_widget, GTK_TYPE_TOOL_ITEM) + +static void +update_pages_label (EvPageActionWidget *action_widget, + gint page) +{ + char *label_text; + gint n_pages; + + n_pages = ev_document_get_n_pages (action_widget->document); + if (ev_document_has_text_page_labels (action_widget->document)) { + label_text = g_strdup_printf (_("(%d of %d)"), page + 1, n_pages); + } else { + label_text = g_strdup_printf (_("of %d"), n_pages); + } + gtk_label_set_text (GTK_LABEL (action_widget->label), label_text); + g_free (label_text); +} + +static void +ev_page_action_widget_set_current_page (EvPageActionWidget *action_widget, + gint page) +{ + if (page >= 0) { + gchar *page_label; + + gtk_entry_set_width_chars (GTK_ENTRY (action_widget->entry), + CLAMP (ev_document_get_max_label_len (action_widget->document), + 6, 12)); + + page_label = ev_document_get_page_label (action_widget->document, page); + gtk_entry_set_text (GTK_ENTRY (action_widget->entry), page_label); + gtk_editable_set_position (GTK_EDITABLE (action_widget->entry), -1); + g_free (page_label); + + } else { + gtk_entry_set_text (GTK_ENTRY (action_widget->entry), ""); + } + + update_pages_label (action_widget, page); +} + +static void +page_changed_cb (EvDocumentModel *model, + gint old_page, + gint new_page, + EvPageActionWidget *action_widget) +{ + ev_page_action_widget_set_current_page (action_widget, new_page); +} + +static gboolean +page_scroll_cb (EvPageActionWidget *action_widget, GdkEventScroll *event) +{ + EvDocumentModel *model = action_widget->doc_model; + gint pageno; + + pageno = ev_document_model_get_page (model); + if ((event->direction == GDK_SCROLL_DOWN) && + (pageno < ev_document_get_n_pages (action_widget->document) - 1)) + pageno++; + if ((event->direction == GDK_SCROLL_UP) && (pageno > 0)) + pageno--; + ev_document_model_set_page (model, pageno); + + return TRUE; +} + +static void +activate_cb (EvPageActionWidget *action_widget) +{ + EvDocumentModel *model; + const char *text; + EvLinkDest *link_dest; + EvLinkAction *link_action; + EvLink *link; + gchar *link_text; + gint current_page; + + model = action_widget->doc_model; + current_page = ev_document_model_get_page (model); + + text = gtk_entry_get_text (GTK_ENTRY (action_widget->entry)); + + link_dest = ev_link_dest_new_page_label (text); + link_action = ev_link_action_new_dest (link_dest); + link_text = g_strdup_printf ("Page: %s", text); + link = ev_link_new (link_text, link_action); + + g_signal_emit (action_widget, widget_signals[WIDGET_ACTIVATE_LINK], 0, link); + + g_object_unref (link); + g_free (link_text); + + if (current_page == ev_document_model_get_page (model)) + ev_page_action_widget_set_current_page (action_widget, current_page); +} + +static void +ev_page_action_widget_init (EvPageActionWidget *action_widget) +{ + GtkWidget *hbox; + AtkObject *obj; + + hbox = gtk_hbox_new (FALSE, 0); + gtk_box_set_spacing (GTK_BOX (hbox), 6); + + action_widget->entry = gtk_entry_new (); + gtk_widget_add_events (action_widget->entry, + GDK_BUTTON_MOTION_MASK); + gtk_entry_set_width_chars (GTK_ENTRY (action_widget->entry), 5); + gtk_entry_set_text (GTK_ENTRY (action_widget->entry), ""); + g_signal_connect_swapped (action_widget->entry, "scroll-event", + G_CALLBACK (page_scroll_cb), + action_widget); + g_signal_connect_swapped (action_widget->entry, "activate", + G_CALLBACK (activate_cb), + action_widget); + + obj = gtk_widget_get_accessible (action_widget->entry); + atk_object_set_name (obj, "page-label-entry"); + + gtk_box_pack_start (GTK_BOX (hbox), action_widget->entry, + FALSE, FALSE, 0); + gtk_widget_show (action_widget->entry); + + action_widget->label = gtk_label_new (NULL); + gtk_box_pack_start (GTK_BOX (hbox), action_widget->label, + FALSE, FALSE, 0); + gtk_widget_show (action_widget->label); + + gtk_container_set_border_width (GTK_CONTAINER (action_widget), 6); + gtk_container_add (GTK_CONTAINER (action_widget), hbox); + gtk_widget_show (hbox); + + gtk_widget_show (GTK_WIDGET (action_widget)); +} + +static void +ev_page_action_widget_document_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvPageActionWidget *action_widget) +{ + EvDocument *document = ev_document_model_get_document (model); + + g_object_ref (document); + if (action_widget->document) + g_object_unref (action_widget->document); + action_widget->document = document; + + if (action_widget->signal_id > 0) { + g_signal_handler_disconnect (action_widget->doc_model, + action_widget->signal_id); + action_widget->signal_id = 0; + } + action_widget->signal_id = + g_signal_connect_object (action_widget->doc_model, + "page-changed", + G_CALLBACK (page_changed_cb), + action_widget, 0); + + ev_page_action_widget_set_current_page (action_widget, + ev_document_model_get_page (model)); +} + +void +ev_page_action_widget_set_model (EvPageActionWidget *action_widget, + EvDocumentModel *model) +{ + if (action_widget->doc_model) { + g_object_remove_weak_pointer (G_OBJECT (action_widget->doc_model), + (gpointer)&action_widget->doc_model); + } + action_widget->doc_model = model; + g_object_add_weak_pointer (G_OBJECT (model), + (gpointer)&action_widget->doc_model); + + g_signal_connect (model, "notify::document", + G_CALLBACK (ev_page_action_widget_document_changed_cb), + action_widget); +} + +static void +ev_page_action_widget_finalize (GObject *object) +{ + EvPageActionWidget *action_widget = EV_PAGE_ACTION_WIDGET (object); + + if (action_widget->doc_model != NULL) { + if (action_widget->signal_id > 0) { + g_signal_handler_disconnect (action_widget->doc_model, + action_widget->signal_id); + action_widget->signal_id = 0; + } + g_object_remove_weak_pointer (G_OBJECT (action_widget->doc_model), + (gpointer)&action_widget->doc_model); + action_widget->doc_model = NULL; + } + + if (action_widget->document) { + g_object_unref (action_widget->document); + action_widget->document = NULL; + } + + G_OBJECT_CLASS (ev_page_action_widget_parent_class)->finalize (object); +} + +static void +ev_page_action_widget_class_init (EvPageActionWidgetClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + + object_class->finalize = ev_page_action_widget_finalize; + + widget_signals[WIDGET_ACTIVATE_LINK] = + g_signal_new ("activate_link", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvPageActionWidgetClass, activate_link), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + G_TYPE_OBJECT); + +} + +static gboolean +match_selected_cb (GtkEntryCompletion *completion, + GtkTreeModel *filter_model, + GtkTreeIter *filter_iter, + EvPageActionWidget *proxy) +{ + EvLink *link; + GtkTreeIter *iter; + + gtk_tree_model_get (filter_model, filter_iter, + 0, &iter, + -1); + gtk_tree_model_get (proxy->model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + g_signal_emit (proxy, widget_signals[WIDGET_ACTIVATE_LINK], 0, link); + + if (link) + g_object_unref (link); + + gtk_tree_iter_free (iter); + + return TRUE; +} + + +static void +display_completion_text (GtkCellLayout *cell_layout, + GtkCellRenderer *renderer, + GtkTreeModel *filter_model, + GtkTreeIter *filter_iter, + EvPageActionWidget *proxy) +{ + EvLink *link; + GtkTreeIter *iter; + + gtk_tree_model_get (filter_model, filter_iter, + 0, &iter, + -1); + gtk_tree_model_get (proxy->model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + g_object_set (renderer, "text", ev_link_get_title (link), NULL); + + if (link) + g_object_unref (link); + + gtk_tree_iter_free (iter); +} + +static gboolean +match_completion (GtkEntryCompletion *completion, + const gchar *key, + GtkTreeIter *filter_iter, + EvPageActionWidget *proxy) +{ + EvLink *link; + GtkTreeIter *iter; + const gchar *text = NULL; + + gtk_tree_model_get (gtk_entry_completion_get_model (completion), + filter_iter, + 0, &iter, + -1); + gtk_tree_model_get (proxy->model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + + if (link) { + text = ev_link_get_title (link); + g_object_unref (link); + } + + gtk_tree_iter_free (iter); + + if (text && key) { + gchar *normalized_text; + gchar *normalized_key; + gchar *case_normalized_text; + gchar *case_normalized_key; + gboolean retval = FALSE; + + normalized_text = g_utf8_normalize (text, -1, G_NORMALIZE_ALL); + normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL); + case_normalized_text = g_utf8_casefold (normalized_text, -1); + case_normalized_key = g_utf8_casefold (normalized_key, -1); + + if (strstr (case_normalized_text, case_normalized_key)) + retval = TRUE; + + g_free (normalized_text); + g_free (normalized_key); + g_free (case_normalized_text); + g_free (case_normalized_key); + + return retval; + } + + return FALSE; +} + +/* user data to set on the widget. */ +#define EPA_FILTER_MODEL_DATA "epa-filter-model" + +static gboolean +build_new_tree_cb (GtkTreeModel *model, + GtkTreePath *path, + GtkTreeIter *iter, + gpointer data) +{ + GtkTreeModel *filter_model = GTK_TREE_MODEL (data); + EvLink *link; + EvLinkAction *action; + EvLinkActionType type; + + gtk_tree_model_get (model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (!link) + return FALSE; + + action = ev_link_get_action (link); + if (!action) { + g_object_unref (link); + return FALSE; + } + + type = ev_link_action_get_action_type (action); + + if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) { + GtkTreeIter filter_iter; + + gtk_list_store_append (GTK_LIST_STORE (filter_model), &filter_iter); + gtk_list_store_set (GTK_LIST_STORE (filter_model), &filter_iter, + 0, iter, + -1); + } + + g_object_unref (link); + + return FALSE; +} + +static GtkTreeModel * +get_filter_model_from_model (GtkTreeModel *model) +{ + GtkTreeModel *filter_model; + + filter_model = + (GtkTreeModel *) g_object_get_data (G_OBJECT (model), EPA_FILTER_MODEL_DATA); + if (filter_model == NULL) { + filter_model = (GtkTreeModel *) gtk_list_store_new (1, GTK_TYPE_TREE_ITER); + + gtk_tree_model_foreach (model, + build_new_tree_cb, + filter_model); + g_object_set_data_full (G_OBJECT (model), EPA_FILTER_MODEL_DATA, filter_model, g_object_unref); + } + + return filter_model; +} + + +void +ev_page_action_widget_update_links_model (EvPageActionWidget *proxy, GtkTreeModel *model) +{ + GtkTreeModel *filter_model; + GtkEntryCompletion *completion; + GtkCellRenderer *renderer; + + if (!model) + return; + + /* Magik */ + proxy->model = model; + filter_model = get_filter_model_from_model (model); + + completion = gtk_entry_completion_new (); + g_object_set (G_OBJECT (completion), + "popup-set-width", FALSE, + "model", filter_model, + NULL); + + g_signal_connect (completion, "match-selected", G_CALLBACK (match_selected_cb), proxy); + gtk_entry_completion_set_match_func (completion, + (GtkEntryCompletionMatchFunc) match_completion, + proxy, NULL); + + /* Set up the layout */ + renderer = (GtkCellRenderer *) + g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, + "ellipsize", PANGO_ELLIPSIZE_END, + "width_chars", 30, + NULL); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion), renderer, TRUE); + gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (completion), + renderer, + (GtkCellLayoutDataFunc) display_completion_text, + proxy, NULL); + gtk_entry_set_completion (GTK_ENTRY (proxy->entry), completion); + + g_object_unref (completion); +} + +void +ev_page_action_widget_grab_focus (EvPageActionWidget *proxy) +{ + gtk_widget_grab_focus (proxy->entry); +} + |