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73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* Menu
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* #Keywords: action, zoom
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*
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* Demonstrates how to add a context menu to a custom widget
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* and connect it with widget actions.
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*
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* The custom widget we create here is similar to a GtkPicture,
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* but allows setting a zoom level for the displayed paintable.
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*
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* Our context menu has items to change the zoom level.
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*/
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#include <gtk/gtk.h>
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#include "demo3widget.h"
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GtkWidget *
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do_menu (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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if (!window)
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{
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GtkWidget *box;
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GtkWidget *box2;
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GtkWidget *sw;
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GtkWidget *widget;
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GtkWidget *scale;
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GtkWidget *dropdown;
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window = gtk_window_new ();
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gtk_window_set_title (GTK_WINDOW (window), "Menu");
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gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_window_set_child (GTK_WINDOW (window), box);
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sw = gtk_scrolled_window_new ();
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gtk_widget_set_vexpand (sw, TRUE);
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gtk_box_append (GTK_BOX (box), sw);
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widget = demo3_widget_new ("/transparent/portland-rose.jpg");
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), widget);
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box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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gtk_box_append (GTK_BOX (box), box2);
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scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0.01, 10.0, 0.1);
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gtk_range_set_value (GTK_RANGE (scale), 1.0);
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gtk_widget_set_hexpand (scale, TRUE);
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gtk_box_append (GTK_BOX (box2), scale);
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dropdown = gtk_drop_down_new (G_LIST_MODEL (gtk_string_list_new ((const char *[]){ "Linear", "Nearest", "Trilinear", NULL })), NULL);
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gtk_box_append (GTK_BOX (box2), dropdown);
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g_object_bind_property (dropdown, "selected", widget, "filter", G_BINDING_DEFAULT);
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g_object_bind_property (gtk_range_get_adjustment (GTK_RANGE (scale)), "value",
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widget, "scale",
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G_BINDING_BIDIRECTIONAL);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_set_visible (window, TRUE);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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