Attachment 40253 Details for Bug 31603 – Test case for the issue.

Test case for the issue.

test.c (text/plain), 1.56 KB, created by holger+fdo on 2010-11-13 08:16:48 UTC

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Creator: holger+fdo

Created: 2010-11-13 08:16:48 UTC

Size: 1.56 KB

patch

obsolete

>#include <gtk/gtk.h>
>#include <cairo/cairo.h>
>
>static cairo_surface_t *_create_gradient_surface(int width, int height)
>{
>  cairo_surface_t *resultant_surface = NULL;
>  cairo_t *temp_cr;
>
>  resultant_surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
>  temp_cr = cairo_create(resultant_surface);
>  cairo_rectangle(temp_cr, 0, 0, width, height);
>  cairo_set_source_rgb(temp_cr, 0, 0, 0);
>  cairo_paint(temp_cr);
>  cairo_destroy(temp_cr);
>
>  return resultant_surface;
>
>}
>
>
>static gboolean
>expose_event_callback (GtkWidget *widget, GdkEventExpose *event, gpointer data)
>{
>  cairo_surface_t *tmp = _create_gradient_surface(widget->allocation.width, widget->allocation.height);
>
>  cairo_t *cr = gdk_cairo_create (widget->window);
>  cairo_set_source_surface (cr, tmp, 0, 0);
>  cairo_paint(cr);
>
>  cairo_destroy(cr);
>  cairo_surface_destroy(tmp);
>  return TRUE;
>}
>
>int main(int argc, char **argv)
>{
>    /* GtkWidget is the storage type for widgets */
>    GtkWidget *window;
>    GtkWidget *button;
>    
>    gtk_init (&argc, &argv);
>    
>    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>    g_signal_connect (window, "delete-event",
>		      G_CALLBACK (gtk_main_quit), NULL);
>    g_signal_connect (window, "destroy",
>		      G_CALLBACK (gtk_main_quit), NULL);
>    
>    
>    button = gtk_drawing_area_new();
>    g_signal_connect (G_OBJECT (button), "expose_event",
>                    G_CALLBACK (expose_event_callback), NULL);
>    
>    gtk_container_add (GTK_CONTAINER (window), button);
>    gtk_widget_show (button);
>    gtk_widget_show (window);
>    gtk_main ();
>    
>    return 0;
>}

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Attachments on bug 31603: 40253 | 40254 | 40268 | 40286

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