static GtkWidget *
do_image (const char *filename)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *image;
GtkWidget *label;
GtkWidget *window;
gchar *str, *escaped;
LoadContext *lc;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Image Loading");
gtk_container_set_border_width (GTK_CONTAINER (window), 8);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);
gtk_container_add (GTK_CONTAINER (window), vbox);
label = gtk_label_new (NULL);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
escaped = g_markup_escape_text (filename, -1);
str = g_strdup_printf ("Progressively loading: <b>%s</b>", escaped);
gtk_label_set_markup (GTK_LABEL (label),
str);
g_free (escaped);
g_free (str);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
image = gtk_image_new_from_pixbuf (NULL);
gtk_container_add (GTK_CONTAINER (frame), image);
lc = get_load_context (image);
lc->window = window;
lc->filename = g_strdup (filename);
start_progressive_loading (image);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_main_quit), NULL);
g_signal_connect (window, "delete_event",
G_CALLBACK (gtk_main_quit), NULL);
gtk_widget_show_all (window);
return window;
}
GtkWidget *
do_images (GtkWidget *do_widget)
{
GtkWidget *video;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *base_vbox;
GtkWidget *image;
GtkWidget *picture;
GtkWidget *label;
GtkWidget *button;
GdkPaintable *paintable;
GIcon *gicon;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Images");
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
g_signal_connect (window, "destroy",
G_CALLBACK (cleanup_callback), NULL);
base_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
g_object_set (base_vbox, "margin", 16, NULL);
gtk_container_add (GTK_CONTAINER (window), base_vbox);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 16);
gtk_container_add (GTK_CONTAINER (base_vbox), hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Image loaded from a file</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (vbox), frame);
image = gtk_image_new_from_icon_name ("gtk3-demo");
gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Animation */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Animation loaded from a file</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (vbox), frame);
picture = gtk_picture_new_for_resource ("/images/floppybuddy.gif");
gtk_container_add (GTK_CONTAINER (frame), picture);
/* Symbolic icon */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Symbolic themed icon</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (vbox), frame);
gicon = g_themed_icon_new_with_default_fallbacks ("battery-caution-charging-symbolic");
image = gtk_image_new_from_gicon (gicon);
gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Progressive */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Progressive image loading</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (vbox), frame);
/* Create an empty image for now; the progressive loader
* will create the pixbuf and fill it in.
*/
picture = gtk_picture_new ();
gtk_container_add (GTK_CONTAINER (frame), picture);
start_progressive_loading (picture);
/* Video */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Displaying video</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (vbox), frame);
video = gtk_video_new_for_resource ("/images/gtk-logo.webm");
gtk_media_stream_set_loop (gtk_video_get_media_stream (GTK_VIDEO (video)), TRUE);
gtk_container_add (GTK_CONTAINER (frame), video);
/* Widget paintables */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>GtkWidgetPaintable</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
paintable = gtk_widget_paintable_new (do_widget);
picture = gtk_picture_new_for_paintable (paintable);
gtk_widget_set_size_request (picture, 100, 100);
gtk_widget_set_valign (picture, GTK_ALIGN_START);
gtk_container_add (GTK_CONTAINER (vbox), picture);
/* Sensitivity control */
button = gtk_toggle_button_new_with_mnemonic ("_Insensitive");
gtk_container_add (GTK_CONTAINER (base_vbox), button);
g_signal_connect (button, "toggled",
G_CALLBACK (toggle_sensitivity_callback),
base_vbox);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}
GtkWidget *
do_images (GtkWidget *do_widget)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *image;
GtkWidget *label;
GtkWidget *button;
GIcon *gicon;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Images");
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
g_signal_connect (window, "destroy",
G_CALLBACK (cleanup_callback), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 8);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);
gtk_container_add (GTK_CONTAINER (window), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Image loaded from a file</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
image = gtk_image_new_from_icon_name ("gtk3-demo", GTK_ICON_SIZE_DIALOG);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Animation */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Animation loaded from a file</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
image = gtk_image_new_from_resource ("/images/floppybuddy.gif");
gtk_container_add (GTK_CONTAINER (frame), image);
/* Symbolic icon */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Symbolic themed icon</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gicon = g_themed_icon_new_with_default_fallbacks ("battery-caution-charging-symbolic");
image = gtk_image_new_from_gicon (gicon, GTK_ICON_SIZE_DIALOG);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Progressive */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Progressive image loading</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_halign (frame, GTK_ALIGN_CENTER);
gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
/* Create an empty image for now; the progressive loader
* will create the pixbuf and fill it in.
*/
image = gtk_image_new_from_pixbuf (NULL);
gtk_container_add (GTK_CONTAINER (frame), image);
start_progressive_loading (image);
/* Sensitivity control */
button = gtk_toggle_button_new_with_mnemonic ("_Insensitive");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
g_signal_connect (button, "toggled",
G_CALLBACK (toggle_sensitivity_callback),
vbox);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show_all (window);
else
gtk_widget_destroy (window);
return window;
}
GtkWidget *
do_images (GtkWidget *do_widget)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *image;
GtkWidget *label;
GtkWidget *align;
GtkWidget *button;
GdkPixbuf *pixbuf;
GError *error = NULL;
char *filename;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Images");
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
g_signal_connect (window, "destroy",
G_CALLBACK (cleanup_callback), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 8);
vbox = gtk_vbox_new (FALSE, 8);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);
gtk_container_add (GTK_CONTAINER (window), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Image loaded from a file</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
/* The alignment keeps the frame from growing when users resize
* the window
*/
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), frame);
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0);
/* demo_find_file() looks in the the current directory first,
* so you can run gtk-demo without installing GTK, then looks
* in the location where the file is installed.
*/
pixbuf = NULL;
filename = demo_find_file ("gtk-logo-rgb.gif", &error);
if (filename)
{
pixbuf = gdk_pixbuf_new_from_file (filename, &error);
g_free (filename);
}
if (error)
{
/* This code shows off error handling. You can just use
* gtk_image_new_from_file() instead if you don't want to report
* errors to the user. If the file doesn't load when using
* gtk_image_new_from_file(), a "missing image" icon will
* be displayed instead.
*/
GtkWidget *dialog;
dialog = gtk_message_dialog_new (GTK_WINDOW (window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"Unable to open image file 'gtk-logo-rgb.gif': %s",
error->message);
g_error_free (error);
g_signal_connect (dialog, "response",
G_CALLBACK (gtk_widget_destroy), NULL);
gtk_widget_show (dialog);
}
image = gtk_image_new_from_pixbuf (pixbuf);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Animation */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Animation loaded from a file</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
/* The alignment keeps the frame from growing when users resize
* the window
*/
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), frame);
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0);
filename = demo_find_file ("floppybuddy.gif", NULL);
image = gtk_image_new_from_file (filename);
g_free (filename);
gtk_container_add (GTK_CONTAINER (frame), image);
/* Progressive */
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Progressive image loading</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
/* The alignment keeps the frame from growing when users resize
* the window
*/
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), frame);
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0);
/* Create an empty image for now; the progressive loader
* will create the pixbuf and fill it in.
*/
image = gtk_image_new_from_pixbuf (NULL);
gtk_container_add (GTK_CONTAINER (frame), image);
start_progressive_loading (image);
/* Sensitivity control */
button = gtk_toggle_button_new_with_mnemonic ("_Insensitive");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
g_signal_connect (button, "toggled",
G_CALLBACK (toggle_sensitivity_callback),
vbox);
}
if (!GTK_WIDGET_VISIBLE (window))
{
gtk_widget_show_all (window);
}
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}
