diff options
| -rw-r--r-- | gdk-pixbuf/gdk-pixbuf-scale.c | 43 |
1 files changed, 3 insertions, 40 deletions
diff --git a/gdk-pixbuf/gdk-pixbuf-scale.c b/gdk-pixbuf/gdk-pixbuf-scale.c index e9c244ec6..84e8e10c3 100644 --- a/gdk-pixbuf/gdk-pixbuf-scale.c +++ b/gdk-pixbuf/gdk-pixbuf-scale.c @@ -29,7 +29,6 @@ * SECTION:scaling * @Short_description: Scaling pixbufs and scaling and alpha blending pixbufs * @Title: Scaling - * @See_also: <link linkend="gdk-GdkRGB">GdkRGB</link>. * * The GdkPixBuf contains functions to scale pixbufs, to scale * pixbufs and alpha blend against an existing image, and to scale @@ -59,49 +58,13 @@ * setting the `GDK_DISABLE_MEDIALIB` environment variable. * * The alpha blending function used is: - * |[ + * + * |[<!-- language="plain" --> * Cd = Cs·As + Cd(1-As) * ]| + * * where `Cd` is the destination pixel color, `Cs` is the source pixel color, * and `As` is the source pixel alpha. - * - * The following example demonstrates handling an expose event by - * rendering the appropriate area of a source image (which is scaled - * to fit the widget) onto the widget's window. The source image is - * rendered against a checkerboard, which provides a visual - * representation of the alpha channel if the image has one. If the - * image doesn't have an alpha channel, calling - * gdk_pixbuf_composite_color() function has exactly the same effect - * as calling gdk_pixbuf_scale(). - * - * ## Handling an expose event - * - * |[ - * gboolean - * expose_cb (GtkWidget *widget, GdkEventExpose *event, gpointer data) - * { - * GdkPixbuf *dest; - * - * dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, event->area.width, event->area.height); - * - * gdk_pixbuf_composite_color (pixbuf, dest, - * 0, 0, event->area.width, event->area.height, - * -event->area.x, -event->area.y, - * (double) widget->allocation.width / gdk_pixbuf_get_width (pixbuf), - * (double) widget->allocation.height / gdk_pixbuf_get_height (pixbuf), - * GDK_INTERP_BILINEAR, 255, - * event->area.x, event->area.y, 16, 0xaaaaaa, 0x555555); - * - * gdk_draw_pixbuf (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL], dest, - * 0, 0, event->area.x, event->area.y, - * event->area.width, event->area.height, - * GDK_RGB_DITHER_NORMAL, event->area.x, event->area.y); - * - * gdk_pixbuf_unref (dest); - * - * return TRUE; - * } - * ]| */ |