inicial

1 files changed, 591 insertions, 0 deletions

diff --git a/src/eom-thumb-nav.c b/src/eom-thumb-nav.c
new file mode 100644
index 0000000..7ccc352
--- /dev/null
+++ b/src/eom-thumb-nav.c
@@ -0,0 +1,591 @@
+/* Eye Of Mate - Thumbnail Navigator
+ *
+ * Copyright (C) 2006 The Free Software Foundation
+ *
+ * Author: Lucas Rocha <[email protected]>
+ *
+ * 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 of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "eom-thumb-nav.h"
+#include "eom-thumb-view.h"
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+#include <gtk/gtk.h>
+#include <string.h>
+
+#define EOM_THUMB_NAV_GET_PRIVATE(object) \
+	(G_TYPE_INSTANCE_GET_PRIVATE ((object), EOM_TYPE_THUMB_NAV, EomThumbNavPrivate))
+
+G_DEFINE_TYPE (EomThumbNav, eom_thumb_nav, GTK_TYPE_HBOX);
+
+#define EOM_THUMB_NAV_SCROLL_INC      20
+#define EOM_THUMB_NAV_SCROLL_MOVE     20
+#define EOM_THUMB_NAV_SCROLL_TIMEOUT  20
+
+enum
+{
+	PROP_SHOW_BUTTONS = 1,
+	PROP_THUMB_VIEW,
+	PROP_MODE
+};
+
+struct _EomThumbNavPrivate {
+	EomThumbNavMode   mode;
+
+	gboolean          show_buttons;
+	gboolean          scroll_dir;
+	gint              scroll_pos;
+	gint              scroll_id;
+
+	GtkWidget        *button_left;
+	GtkWidget        *button_right;
+	GtkWidget        *sw;
+	GtkWidget        *thumbview;
+	GtkAdjustment    *adj;
+};
+
+static gboolean
+eom_thumb_nav_scroll_event (GtkWidget *widget, GdkEventScroll *event, gpointer user_data)
+{
+	EomThumbNav *nav = EOM_THUMB_NAV (user_data);
+	gint inc = EOM_THUMB_NAV_SCROLL_INC * 3;
+
+	if (nav->priv->mode != EOM_THUMB_NAV_MODE_ONE_ROW)
+		return FALSE;
+
+	switch (event->direction) {
+	case GDK_SCROLL_UP:
+	case GDK_SCROLL_LEFT:
+		inc *= -1;
+		break;
+
+	case GDK_SCROLL_DOWN:
+	case GDK_SCROLL_RIGHT:
+		break;
+
+	default:
+		g_assert_not_reached ();
+		return FALSE;
+	}
+
+	if (inc < 0)
+		gtk_adjustment_set_value (nav->priv->adj, MAX (0, gtk_adjustment_get_value (nav->priv->adj) + inc));
+	else
+		gtk_adjustment_set_value (nav->priv->adj, MIN (gtk_adjustment_get_upper (nav->priv->adj) - gtk_adjustment_get_page_size (nav->priv->adj), gtk_adjustment_get_value (nav->priv->adj) + inc));
+
+	return TRUE;
+}
+
+static void
+eom_thumb_nav_adj_changed (GtkAdjustment *adj, gpointer user_data)
+{
+	EomThumbNav *nav;
+	EomThumbNavPrivate *priv;
+	gboolean ltr;
+
+	nav = EOM_THUMB_NAV (user_data);
+	priv = EOM_THUMB_NAV_GET_PRIVATE (nav);
+	ltr = gtk_widget_get_direction (priv->sw) == GTK_TEXT_DIR_LTR;
+
+	gtk_widget_set_sensitive (ltr ? priv->button_right : priv->button_left,
+				  gtk_adjustment_get_value (adj)
+				   < gtk_adjustment_get_upper (adj)
+				    - gtk_adjustment_get_page_size (adj));
+}
+
+static void
+eom_thumb_nav_adj_value_changed (GtkAdjustment *adj, gpointer user_data)
+{
+	EomThumbNav *nav;
+	EomThumbNavPrivate *priv;
+	gboolean ltr;
+
+	nav = EOM_THUMB_NAV (user_data);
+	priv = EOM_THUMB_NAV_GET_PRIVATE (nav);
+	ltr = gtk_widget_get_direction (priv->sw) == GTK_TEXT_DIR_LTR;
+
+	gtk_widget_set_sensitive (ltr ? priv->button_left : priv->button_right,
+				  gtk_adjustment_get_value (adj) > 0);
+
+	gtk_widget_set_sensitive (ltr ? priv->button_right : priv->button_left,
+				  gtk_adjustment_get_value (adj)
+				   < gtk_adjustment_get_upper (adj)
+				    - gtk_adjustment_get_page_size (adj));
+}
+
+static gboolean
+eom_thumb_nav_scroll_step (gpointer user_data)
+{
+	EomThumbNav *nav = EOM_THUMB_NAV (user_data);
+	GtkAdjustment *adj = nav->priv->adj;
+	gint delta;
+
+	if (nav->priv->scroll_pos < 10)
+		delta = EOM_THUMB_NAV_SCROLL_INC;
+	else if (nav->priv->scroll_pos < 20)
+		delta = EOM_THUMB_NAV_SCROLL_INC * 2;
+	else if (nav->priv->scroll_pos < 30)
+		delta = EOM_THUMB_NAV_SCROLL_INC * 2 + 5;
+	else
+		delta = EOM_THUMB_NAV_SCROLL_INC * 2 + 12;
+
+	if (!nav->priv->scroll_dir)
+		delta *= -1;
+
+	if ((gint) (gtk_adjustment_get_value (adj) + (gdouble) delta) >= 0 &&
+	    (gint) (gtk_adjustment_get_value (adj) + (gdouble) delta) <= gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj)) {
+		gtk_adjustment_set_value(adj,
+			gtk_adjustment_get_value (adj) + (gdouble) delta);
+		nav->priv->scroll_pos++;
+	} else {
+		if (delta > 0)
+		      gtk_adjustment_set_value (adj,
+		      	gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj));
+		else
+		      gtk_adjustment_set_value (adj, 0);
+
+		nav->priv->scroll_pos = 0;
+
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static void
+eom_thumb_nav_button_clicked (GtkButton *button, EomThumbNav *nav)
+{
+	nav->priv->scroll_pos = 0;
+
+	nav->priv->scroll_dir = gtk_widget_get_direction (GTK_WIDGET (button)) == GTK_TEXT_DIR_LTR ?
+		GTK_WIDGET (button) == nav->priv->button_right :
+		GTK_WIDGET (button) == nav->priv->button_left;
+
+	eom_thumb_nav_scroll_step (nav);
+}
+
+static void
+eom_thumb_nav_start_scroll (GtkButton *button, EomThumbNav *nav)
+{
+	nav->priv->scroll_dir = gtk_widget_get_direction (GTK_WIDGET (button)) == GTK_TEXT_DIR_LTR ?
+		GTK_WIDGET (button) == nav->priv->button_right :
+		GTK_WIDGET (button) == nav->priv->button_left;
+
+	nav->priv->scroll_id = g_timeout_add (EOM_THUMB_NAV_SCROLL_TIMEOUT,
+					      eom_thumb_nav_scroll_step,
+					      nav);
+}
+
+static void
+eom_thumb_nav_stop_scroll (GtkButton *button, EomThumbNav *nav)
+{
+	if (nav->priv->scroll_id > 0) {
+		g_source_remove (nav->priv->scroll_id);
+		nav->priv->scroll_id = 0;
+		nav->priv->scroll_pos = 0;
+	}
+}
+
+static void
+eom_thumb_nav_get_property (GObject    *object,
+			    guint       property_id,
+			    GValue     *value,
+			    GParamSpec *pspec)
+{
+	EomThumbNav *nav = EOM_THUMB_NAV (object);
+
+	switch (property_id)
+	{
+	case PROP_SHOW_BUTTONS:
+		g_value_set_boolean (value,
+			eom_thumb_nav_get_show_buttons (nav));
+		break;
+
+	case PROP_THUMB_VIEW:
+		g_value_set_object (value, nav->priv->thumbview);
+		break;
+
+	case PROP_MODE:
+		g_value_set_int (value,
+			eom_thumb_nav_get_mode (nav));
+		break;
+	}
+}
+
+static void
+eom_thumb_nav_set_property (GObject      *object,
+			    guint         property_id,
+			    const GValue *value,
+			    GParamSpec   *pspec)
+{
+	EomThumbNav *nav = EOM_THUMB_NAV (object);
+
+	switch (property_id)
+	{
+	case PROP_SHOW_BUTTONS:
+		eom_thumb_nav_set_show_buttons (nav,
+			g_value_get_boolean (value));
+		break;
+
+	case PROP_THUMB_VIEW:
+		nav->priv->thumbview =
+			GTK_WIDGET (g_value_get_object (value));
+		break;
+
+	case PROP_MODE:
+		eom_thumb_nav_set_mode (nav,
+			g_value_get_int (value));
+		break;
+	}
+}
+
+static GObject *
+eom_thumb_nav_constructor (GType type,
+			   guint n_construct_properties,
+			   GObjectConstructParam *construct_params)
+{
+	GObject *object;
+	EomThumbNavPrivate *priv;
+
+	object = G_OBJECT_CLASS (eom_thumb_nav_parent_class)->constructor
+			(type, n_construct_properties, construct_params);
+
+	priv = EOM_THUMB_NAV (object)->priv;
+
+	if (priv->thumbview != NULL) {
+		gtk_container_add (GTK_CONTAINER (priv->sw), priv->thumbview);
+		gtk_widget_show_all (priv->sw);
+	}
+
+	return object;
+}
+
+static void
+eom_thumb_nav_class_init (EomThumbNavClass *class)
+{
+	GObjectClass *g_object_class = (GObjectClass *) class;
+
+	g_object_class->constructor  = eom_thumb_nav_constructor;
+	g_object_class->get_property = eom_thumb_nav_get_property;
+	g_object_class->set_property = eom_thumb_nav_set_property;
+
+	g_object_class_install_property (g_object_class,
+	                                 PROP_SHOW_BUTTONS,
+	                                 g_param_spec_boolean ("show-buttons",
+	                                                       "Show Buttons",
+	                                                       "Whether to show navigation buttons or not",
+	                                                       TRUE,
+	                                                       (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
+	g_object_class_install_property (g_object_class,
+	                                 PROP_THUMB_VIEW,
+	                                 g_param_spec_object ("thumbview",
+	                                                       "Thumbnail View",
+	                                                       "The internal thumbnail viewer widget",
+	                                                       EOM_TYPE_THUMB_VIEW,
+	                                                       (G_PARAM_CONSTRUCT_ONLY |
+								G_PARAM_READABLE |
+								G_PARAM_WRITABLE)));
+
+	g_object_class_install_property (g_object_class,
+	                                 PROP_MODE,
+	                                 g_param_spec_int ("mode",
+	                                                   "Mode",
+	                                                   "Thumb navigator mode",
+	                                                   EOM_THUMB_NAV_MODE_ONE_ROW,
+							   EOM_THUMB_NAV_MODE_MULTIPLE_ROWS,
+							   EOM_THUMB_NAV_MODE_ONE_ROW,
+	                                                   (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
+	g_type_class_add_private (g_object_class, sizeof (EomThumbNavPrivate));
+}
+
+static void
+eom_thumb_nav_init (EomThumbNav *nav)
+{
+	EomThumbNavPrivate *priv;
+	GtkWidget *arrow;
+
+	nav->priv = EOM_THUMB_NAV_GET_PRIVATE (nav);
+
+	priv = nav->priv;
+
+	priv->mode = EOM_THUMB_NAV_MODE_ONE_ROW;
+
+	priv->show_buttons = TRUE;
+
+        priv->button_left = gtk_button_new ();
+	gtk_button_set_relief (GTK_BUTTON (priv->button_left), GTK_RELIEF_NONE);
+
+	arrow = gtk_arrow_new (GTK_ARROW_LEFT, GTK_SHADOW_ETCHED_IN);
+	gtk_container_add (GTK_CONTAINER (priv->button_left), arrow);
+
+	gtk_widget_set_size_request (GTK_WIDGET (priv->button_left), 25, 0);
+
+        gtk_box_pack_start (GTK_BOX (nav), priv->button_left, FALSE, FALSE, 0);
+
+	g_signal_connect (priv->button_left,
+			  "clicked",
+			  G_CALLBACK (eom_thumb_nav_button_clicked),
+			  nav);
+
+	g_signal_connect (priv->button_left,
+			  "pressed",
+			  G_CALLBACK (eom_thumb_nav_start_scroll),
+			  nav);
+
+	g_signal_connect (priv->button_left,
+			  "released",
+			  G_CALLBACK (eom_thumb_nav_stop_scroll),
+			  nav);
+
+	priv->sw = gtk_scrolled_window_new (NULL, NULL);
+
+	gtk_widget_set_name (gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (priv->sw)), "eom-image-collection-scrollbar");
+
+	gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->sw),
+					     GTK_SHADOW_IN);
+
+	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->sw),
+					GTK_POLICY_AUTOMATIC,
+					GTK_POLICY_NEVER);
+
+	g_signal_connect (priv->sw,
+			  "scroll-event",
+			  G_CALLBACK (eom_thumb_nav_scroll_event),
+			  nav);
+
+	priv->adj = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (priv->sw));
+
+	g_signal_connect (priv->adj,
+			  "changed",
+			  G_CALLBACK (eom_thumb_nav_adj_changed),
+			  nav);
+
+	g_signal_connect (priv->adj,
+			  "value-changed",
+			  G_CALLBACK (eom_thumb_nav_adj_value_changed),
+			  nav);
+
+        gtk_box_pack_start (GTK_BOX (nav), priv->sw, TRUE, TRUE, 0);
+
+        priv->button_right = gtk_button_new ();
+	gtk_button_set_relief (GTK_BUTTON (priv->button_right), GTK_RELIEF_NONE);
+
+	arrow = gtk_arrow_new (GTK_ARROW_RIGHT, GTK_SHADOW_NONE);
+	gtk_container_add (GTK_CONTAINER (priv->button_right), arrow);
+
+	gtk_widget_set_size_request (GTK_WIDGET (priv->button_right), 25, 0);
+
+        gtk_box_pack_start (GTK_BOX (nav), priv->button_right, FALSE, FALSE, 0);
+
+	g_signal_connect (priv->button_right,
+			  "clicked",
+			  G_CALLBACK (eom_thumb_nav_button_clicked),
+			  nav);
+
+	g_signal_connect (priv->button_right,
+			  "pressed",
+			  G_CALLBACK (eom_thumb_nav_start_scroll),
+			  nav);
+
+	g_signal_connect (priv->button_right,
+			  "released",
+			  G_CALLBACK (eom_thumb_nav_stop_scroll),
+			  nav);
+
+	gtk_adjustment_value_changed (priv->adj);
+}
+
+/**
+ * eom_thumb_nav_new:
+ * @thumbview: an #EomThumbView to embed in the navigation widget.
+ * @mode: The navigation mode.
+ * @show_buttons: Whether to show the navigation buttons.
+ *
+ * Creates a new thumbnail navigation widget.
+ *
+ * Returns: a new #EomThumbNav object.
+ **/
+GtkWidget *
+eom_thumb_nav_new (GtkWidget       *thumbview,
+		   EomThumbNavMode  mode,
+		   gboolean         show_buttons)
+{
+	GObject *nav;
+
+	nav = g_object_new (EOM_TYPE_THUMB_NAV,
+		            "show-buttons", show_buttons,
+		            "mode", mode,
+		            "thumbview", thumbview,
+		            "homogeneous", FALSE,
+		            "spacing", 0,
+			    NULL);
+
+	return GTK_WIDGET (nav);
+}
+
+/**
+ * eom_thumb_nav_get_show_buttons:
+ * @nav: an #EomThumbNav.
+ *
+ * Gets whether the navigation buttons are visible.
+ *
+ * Returns: %TRUE if the navigation buttons are visible,
+ * %FALSE otherwise.
+ **/
+gboolean
+eom_thumb_nav_get_show_buttons (EomThumbNav *nav)
+{
+	g_return_val_if_fail (EOM_IS_THUMB_NAV (nav), FALSE);
+
+	return nav->priv->show_buttons;
+}
+
+/**
+ * eom_thumb_nav_set_show_buttons:
+ * @nav: an #EomThumbNav.
+ * @show_buttons: %TRUE to show the buttons, %FALSE to hide them.
+ *
+ * Sets whether the navigation buttons to the left and right of the
+ * widget should be visible.
+ **/
+void
+eom_thumb_nav_set_show_buttons (EomThumbNav *nav, gboolean show_buttons)
+{
+	g_return_if_fail (EOM_IS_THUMB_NAV (nav));
+	g_return_if_fail (nav->priv->button_left  != NULL);
+	g_return_if_fail (nav->priv->button_right != NULL);
+
+	nav->priv->show_buttons = show_buttons;
+
+	if (show_buttons &&
+	    nav->priv->mode == EOM_THUMB_NAV_MODE_ONE_ROW) {
+		gtk_widget_show_all (nav->priv->button_left);
+		gtk_widget_show_all (nav->priv->button_right);
+	} else {
+		gtk_widget_hide_all (nav->priv->button_left);
+		gtk_widget_hide_all (nav->priv->button_right);
+	}
+}
+
+/**
+ * eom_thumb_nav_get_mode:
+ * @nav: an #EomThumbNav.
+ *
+ * Gets the navigation mode in @nav.
+ *
+ * Returns: A value in #EomThumbNavMode.
+ **/
+EomThumbNavMode
+eom_thumb_nav_get_mode (EomThumbNav *nav)
+{
+	g_return_val_if_fail (EOM_IS_THUMB_NAV (nav), FALSE);
+
+	return nav->priv->mode;
+}
+
+/**
+ * eom_thumb_nav_set_mode:
+ * @nav: An #EomThumbNav.
+ * @mode: One of #EomThumbNavMode.
+ *
+ * Sets the navigation mode in @nav. See #EomThumbNavMode for details.
+ **/
+void
+eom_thumb_nav_set_mode (EomThumbNav *nav, EomThumbNavMode mode)
+{
+	EomThumbNavPrivate *priv;
+
+	g_return_if_fail (EOM_IS_THUMB_NAV (nav));
+
+	priv = nav->priv;
+
+	priv->mode = mode;
+
+	switch (mode)
+	{
+	case EOM_THUMB_NAV_MODE_ONE_ROW:
+		gtk_icon_view_set_columns (GTK_ICON_VIEW (priv->thumbview),
+					   G_MAXINT);
+
+		gtk_widget_set_size_request (priv->thumbview, -1, -1);
+		eom_thumb_view_set_item_height (EOM_THUMB_VIEW (priv->thumbview),
+						115);
+
+		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->sw),
+						GTK_POLICY_AUTOMATIC,
+						GTK_POLICY_NEVER);
+
+		eom_thumb_nav_set_show_buttons (nav, priv->show_buttons);
+
+		break;
+
+	case EOM_THUMB_NAV_MODE_ONE_COLUMN:
+		gtk_icon_view_set_columns (GTK_ICON_VIEW (priv->thumbview), 1);
+
+		gtk_widget_set_size_request (priv->thumbview, -1, -1);
+		eom_thumb_view_set_item_height (EOM_THUMB_VIEW (priv->thumbview),
+						-1);
+
+		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->sw),
+						GTK_POLICY_NEVER,
+						GTK_POLICY_AUTOMATIC);
+
+		gtk_widget_hide_all (priv->button_left);
+		gtk_widget_hide_all (priv->button_right);
+
+		break;
+
+	case EOM_THUMB_NAV_MODE_MULTIPLE_ROWS:
+		gtk_icon_view_set_columns (GTK_ICON_VIEW (priv->thumbview), -1);
+
+		gtk_widget_set_size_request (priv->thumbview, -1, 220);
+		eom_thumb_view_set_item_height (EOM_THUMB_VIEW (priv->thumbview),
+						-1);
+
+		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->sw),
+						GTK_POLICY_NEVER,
+						GTK_POLICY_AUTOMATIC);
+
+		gtk_widget_hide_all (priv->button_left);
+		gtk_widget_hide_all (priv->button_right);
+
+		break;
+
+	case EOM_THUMB_NAV_MODE_MULTIPLE_COLUMNS:
+		gtk_icon_view_set_columns (GTK_ICON_VIEW (priv->thumbview), -1);
+
+		gtk_widget_set_size_request (priv->thumbview, 230, -1);
+		eom_thumb_view_set_item_height (EOM_THUMB_VIEW (priv->thumbview),
+						-1);
+
+		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->sw),
+						GTK_POLICY_NEVER,
+						GTK_POLICY_AUTOMATIC);
+
+		gtk_widget_hide_all (priv->button_left);
+		gtk_widget_hide_all (priv->button_right);
+
+		break;
+	}
+}