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