<file>iconscroll.c</file>
<file>iconview.c</file>
<file>iconview_edit.c</file>
+ <file>image_scaling.c</file>
<file>images.c</file>
<file>infobar.c</file>
<file>layoutmanager.c</file>
<file>main.c</file>
<file>markup.c</file>
<file>mask.c</file>
- <file>menu.c</file>
<file>overlay.c</file>
<file>overlay_decorative.c</file>
<file>paint.c</file>
--- /dev/null
+/* Image Scaling
+ * #Keywords: zoom, scale, filter, action, menu
+ *
+ * The custom widget we create here is similar to a GtkPicture,
+ * but allows setting a zoom level and filtering mode for the
+ * displayed paintable.
+ *
+ * It also demonstrates how to add a context menu to a custom
+ * widget and connect it with widget actions.
+ *
+ * The context menu has items to change the zoom level.
+ */
+
+#include <gtk/gtk.h>
+#include "demo3widget.h"
+
+static void
+file_opened (GObject *source,
+ GAsyncResult *result,
+ void *data)
+{
+ GFile *file;
+ GError *error = NULL;
+ GdkTexture *texture;
+
+ file = gtk_file_dialog_open_finish (GTK_FILE_DIALOG (source), result, &error);
+
+ if (!file)
+ {
+ g_print ("%s\n", error->message);
+ g_error_free (error);
+ return;
+ }
+
+ texture = gdk_texture_new_from_file (file, &error);
+ g_object_unref (file);
+ if (!texture)
+ {
+ g_print ("%s\n", error->message);
+ g_error_free (error);
+ return;
+ }
+
+ g_object_set (G_OBJECT (data), "texture", texture, NULL);
+ g_object_unref (texture);
+}
+
+static void
+open_file (GtkWidget *picker,
+ GtkWidget *demo)
+{
+ GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (picker));
+ GtkFileDialog *dialog;
+ GtkFileFilter *filter;
+ GListStore *filters;
+
+ dialog = gtk_file_dialog_new ();
+
+ filter = gtk_file_filter_new ();
+ gtk_file_filter_set_name (filter, "Images");
+ gtk_file_filter_add_pixbuf_formats (filter);
+ filters = g_list_store_new (GTK_TYPE_FILE_FILTER);
+ g_list_store_append (filters, filter);
+ g_object_unref (filter);
+
+ gtk_file_dialog_set_filters (dialog, G_LIST_MODEL (filters));
+ g_object_unref (filters);
+
+ gtk_file_dialog_open (dialog, parent, NULL, file_opened, demo);
+
+ g_object_unref (dialog);
+}
+
+static void
+rotate (GtkWidget *button,
+ GtkWidget *demo)
+{
+ float angle;
+
+ g_object_get (demo, "angle", &angle, NULL);
+
+ angle = fmodf (angle + 90.f, 360.f);
+
+ g_object_set (demo, "angle", angle, NULL);
+}
+
+static gboolean
+transform_to (GBinding *binding,
+ const GValue *src,
+ GValue *dest,
+ gpointer user_data)
+{
+ double from;
+ float to;
+
+ from = g_value_get_double (src);
+ to = (float) pow (2., from);
+ g_value_set_float (dest, to);
+
+ return TRUE;
+}
+
+static gboolean
+transform_from (GBinding *binding,
+ const GValue *src,
+ GValue *dest,
+ gpointer user_data)
+{
+ float to;
+ double from;
+
+ to = g_value_get_float (src);
+ from = log2 (to);
+ g_value_set_double (dest, from);
+
+ return TRUE;
+}
+
+GtkWidget *
+do_image_scaling (GtkWidget *do_widget)
+{
+ static GtkWidget *window = NULL;
+
+ if (!window)
+ {
+ GtkWidget *box;
+ GtkWidget *box2;
+ GtkWidget *sw;
+ GtkWidget *widget;
+ GtkWidget *scale;
+ GtkWidget *dropdown;
+ GtkWidget *button;
+
+ window = gtk_window_new ();
+ gtk_window_set_title (GTK_WINDOW (window), "Image Scaling");
+ gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
+ gtk_window_set_display (GTK_WINDOW (window),
+ gtk_widget_get_display (do_widget));
+ g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
+
+ box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+ gtk_window_set_child (GTK_WINDOW (window), box);
+
+ sw = gtk_scrolled_window_new ();
+ gtk_widget_set_vexpand (sw, TRUE);
+ gtk_box_append (GTK_BOX (box), sw);
+
+ widget = demo3_widget_new ("/transparent/portland-rose.jpg");
+ gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), widget);
+
+ box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+ gtk_box_append (GTK_BOX (box), box2);
+
+ button = gtk_button_new_from_icon_name ("document-open-symbolic");
+ gtk_widget_set_tooltip_text (button, "Open File");
+ g_signal_connect (button, "clicked", G_CALLBACK (open_file), widget);
+ gtk_box_append (GTK_BOX (box2), button);
+
+ button = gtk_button_new_from_icon_name ("object-rotate-right-symbolic");
+ gtk_widget_set_tooltip_text (button, "Rotate");
+ g_signal_connect (button, "clicked", G_CALLBACK (rotate), widget);
+ gtk_box_append (GTK_BOX (box2), button);
+
+ scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, -10., 10., 0.1);
+ gtk_scale_add_mark (GTK_SCALE (scale), 0., GTK_POS_TOP, NULL);
+ gtk_widget_set_tooltip_text (scale, "Zoom");
+ gtk_range_set_value (GTK_RANGE (scale), 0.);
+ gtk_widget_set_hexpand (scale, TRUE);
+ gtk_box_append (GTK_BOX (box2), scale);
+
+ dropdown = gtk_drop_down_new (G_LIST_MODEL (gtk_string_list_new ((const char *[]){ "Linear", "Nearest", "Trilinear", NULL })), NULL);
+ gtk_widget_set_tooltip_text (dropdown, "Filter");
+ gtk_box_append (GTK_BOX (box2), dropdown);
+
+ g_object_bind_property (dropdown, "selected", widget, "filter", G_BINDING_DEFAULT);
+
+ g_object_bind_property_full (gtk_range_get_adjustment (GTK_RANGE (scale)), "value",
+ widget, "scale",
+ G_BINDING_BIDIRECTIONAL,
+ transform_to,
+ transform_from,
+ NULL, NULL);
+ }
+
+ if (!gtk_widget_get_visible (window))
+ gtk_widget_set_visible (window, TRUE);
+ else
+ gtk_window_destroy (GTK_WINDOW (window));
+
+ return window;
+}
+++ /dev/null
-/* Image Scaling
- * #Keywords: zoom, scale, filter, action, menu
- *
- * The custom widget we create here is similar to a GtkPicture,
- * but allows setting a zoom level and filtering mode for the
- * displayed paintable.
- *
- * It also demonstrates how to add a context menu to a custom
- * widget and connect it with widget actions.
- *
- * The context menu has items to change the zoom level.
- */
-
-#include <gtk/gtk.h>
-#include "demo3widget.h"
-
-static void
-file_opened (GObject *source,
- GAsyncResult *result,
- void *data)
-{
- GFile *file;
- GError *error = NULL;
- GdkTexture *texture;
-
- file = gtk_file_dialog_open_finish (GTK_FILE_DIALOG (source), result, &error);
-
- if (!file)
- {
- g_print ("%s\n", error->message);
- g_error_free (error);
- return;
- }
-
- texture = gdk_texture_new_from_file (file, &error);
- g_object_unref (file);
- if (!texture)
- {
- g_print ("%s\n", error->message);
- g_error_free (error);
- return;
- }
-
- g_object_set (G_OBJECT (data), "texture", texture, NULL);
- g_object_unref (texture);
-}
-
-static void
-open_file (GtkWidget *picker,
- GtkWidget *demo)
-{
- GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (picker));
- GtkFileDialog *dialog;
- GtkFileFilter *filter;
- GListStore *filters;
-
- dialog = gtk_file_dialog_new ();
-
- filter = gtk_file_filter_new ();
- gtk_file_filter_set_name (filter, "Images");
- gtk_file_filter_add_pixbuf_formats (filter);
- filters = g_list_store_new (GTK_TYPE_FILE_FILTER);
- g_list_store_append (filters, filter);
- g_object_unref (filter);
-
- gtk_file_dialog_set_filters (dialog, G_LIST_MODEL (filters));
- g_object_unref (filters);
-
- gtk_file_dialog_open (dialog, parent, NULL, file_opened, demo);
-
- g_object_unref (dialog);
-}
-
-static void
-rotate (GtkWidget *button,
- GtkWidget *demo)
-{
- float angle;
-
- g_object_get (demo, "angle", &angle, NULL);
-
- angle = fmodf (angle + 90.f, 360.f);
-
- g_object_set (demo, "angle", angle, NULL);
-}
-
-static gboolean
-transform_to (GBinding *binding,
- const GValue *src,
- GValue *dest,
- gpointer user_data)
-{
- double from;
- float to;
-
- from = g_value_get_double (src);
- to = (float) pow (2., from);
- g_value_set_float (dest, to);
-
- return TRUE;
-}
-
-static gboolean
-transform_from (GBinding *binding,
- const GValue *src,
- GValue *dest,
- gpointer user_data)
-{
- float to;
- double from;
-
- to = g_value_get_float (src);
- from = log2 (to);
- g_value_set_double (dest, from);
-
- return TRUE;
-}
-
-GtkWidget *
-do_menu (GtkWidget *do_widget)
-{
- static GtkWidget *window = NULL;
-
- if (!window)
- {
- GtkWidget *box;
- GtkWidget *box2;
- GtkWidget *sw;
- GtkWidget *widget;
- GtkWidget *scale;
- GtkWidget *dropdown;
- GtkWidget *button;
-
- window = gtk_window_new ();
- gtk_window_set_title (GTK_WINDOW (window), "Image Scaling");
- gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
- gtk_window_set_display (GTK_WINDOW (window),
- gtk_widget_get_display (do_widget));
- g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
-
- box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
- gtk_window_set_child (GTK_WINDOW (window), box);
-
- sw = gtk_scrolled_window_new ();
- gtk_widget_set_vexpand (sw, TRUE);
- gtk_box_append (GTK_BOX (box), sw);
-
- widget = demo3_widget_new ("/transparent/portland-rose.jpg");
- gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), widget);
-
- box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
- gtk_box_append (GTK_BOX (box), box2);
-
- button = gtk_button_new_from_icon_name ("document-open-symbolic");
- gtk_widget_set_tooltip_text (button, "Open File");
- g_signal_connect (button, "clicked", G_CALLBACK (open_file), widget);
- gtk_box_append (GTK_BOX (box2), button);
-
- button = gtk_button_new_from_icon_name ("object-rotate-right-symbolic");
- gtk_widget_set_tooltip_text (button, "Rotate");
- g_signal_connect (button, "clicked", G_CALLBACK (rotate), widget);
- gtk_box_append (GTK_BOX (box2), button);
-
- scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, -10., 10., 0.1);
- gtk_scale_add_mark (GTK_SCALE (scale), 0., GTK_POS_TOP, NULL);
- gtk_widget_set_tooltip_text (scale, "Zoom");
- gtk_range_set_value (GTK_RANGE (scale), 0.);
- gtk_widget_set_hexpand (scale, TRUE);
- gtk_box_append (GTK_BOX (box2), scale);
-
- dropdown = gtk_drop_down_new (G_LIST_MODEL (gtk_string_list_new ((const char *[]){ "Linear", "Nearest", "Trilinear", NULL })), NULL);
- gtk_widget_set_tooltip_text (dropdown, "Filter");
- gtk_box_append (GTK_BOX (box2), dropdown);
-
- g_object_bind_property (dropdown, "selected", widget, "filter", G_BINDING_DEFAULT);
-
- g_object_bind_property_full (gtk_range_get_adjustment (GTK_RANGE (scale)), "value",
- widget, "scale",
- G_BINDING_BIDIRECTIONAL,
- transform_to,
- transform_from,
- NULL, NULL);
- }
-
- if (!gtk_widget_get_visible (window))
- gtk_widget_set_visible (window, TRUE);
- else
- gtk_window_destroy (GTK_WINDOW (window));
-
- return window;
-}
'iconscroll.c',
'iconview.c',
'iconview_edit.c',
+ 'image_scaling.c',
'images.c',
'infobar.c',
'layoutmanager.c',
'listbox.c',
'listbox_controls.c',
'mask.c',
- 'menu.c',
'flowbox.c',
'list_store.c',
'listview_applauncher.c',
projects / gtk4.git / commitdiff