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/* Paintable/SVG
*
* This demo shows wrapping a librsvg RsvgHandle in a GdkPaintable
* to display an SVG image that can be scaled by resizing the window.
*
* This demo relies on librsvg, which GTK itself does not link against.
*/
#include <gtk/gtk.h>
#include <librsvg/rsvg.h>
#include "svgpaintable.h"
static void
open_response_cb (GObject *source,
GAsyncResult *result,
void *data)
{
GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
GtkPicture *picture = data;
GFile *file;
file = gtk_file_dialog_open_finish (dialog, result, NULL);
if (file)
{
GdkPaintable *paintable;
paintable = svg_paintable_new (file);
gtk_picture_set_paintable (GTK_PICTURE (picture), paintable);
g_object_unref (paintable);
g_object_unref (file);
}
}
static void
show_file_open (GtkWidget *button,
GtkPicture *picture)
{
GtkFileFilter *filter;
GtkFileDialog *dialog;
GListStore *filters;
dialog = gtk_file_dialog_new ();
gtk_file_dialog_set_title (dialog, "Open node file");
filter = gtk_file_filter_new ();
gtk_file_filter_add_mime_type (filter, "image/svg+xml");
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,
GTK_WINDOW (gtk_widget_get_root (button)),
NULL,
NULL,
open_response_cb, picture);
}
static GtkWidget *window;
GtkWidget *
do_paintable_svg (GtkWidget *do_widget)
{
GtkWidget *header;
GtkWidget *picture;
GtkWidget *button;
GFile *file;
GdkPaintable *paintable;
if (!window)
{
window = gtk_window_new ();
header = gtk_header_bar_new ();
gtk_window_set_titlebar (GTK_WINDOW (window), header);
gtk_window_set_default_size (GTK_WINDOW (window), 330, 330);
gtk_window_set_title (GTK_WINDOW (window), "Paintable — SVG");
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
button = gtk_button_new_with_mnemonic ("_Open");
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), button);
picture = gtk_picture_new ();
gtk_picture_set_can_shrink (GTK_PICTURE (picture), TRUE);
gtk_widget_set_size_request (picture, 16, 16);
g_signal_connect (button, "clicked", G_CALLBACK (show_file_open), picture);
gtk_window_set_child (GTK_WINDOW (window), picture);
file = g_file_new_for_uri ("resource:///paintable_svg/org.gtk.gtk4.NodeEditor.Devel.svg");
paintable = svg_paintable_new (file);
gtk_picture_set_paintable (GTK_PICTURE (picture), paintable);
g_object_unref (paintable);
g_object_unref (file);
}
if (!gtk_widget_get_visible (window))
gtk_window_present (GTK_WINDOW (window));
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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