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#include "ev-document-misc.h"
#include <string.h>
/* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
* It is four pixels wider and taller than the source. If source_pixbuf is not
* NULL, then it will fill the return pixbuf with the contents of
* source_pixbuf.
*/
GdkPixbuf *
ev_document_misc_get_thumbnail_frame (int width,
int height,
GdkPixbuf *source_pixbuf)
{
GdkPixbuf *retval;
guchar *data;
gint rowstride;
int i;
if (source_pixbuf)
g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
if (source_pixbuf) {
width = gdk_pixbuf_get_width (source_pixbuf);
height = gdk_pixbuf_get_height (source_pixbuf);
}
/* make sure no one is passing us garbage */
g_assert (width > 0 && height > 0);
retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE, 8,
width + 4,
height + 4);
/* make it black and fill in the middle */
data = gdk_pixbuf_get_pixels (retval);
rowstride = gdk_pixbuf_get_rowstride (retval);
gdk_pixbuf_fill (retval, 0x000000ff);
for (i = 1; i < height + 1; i++)
memset (data + (rowstride * i) + 4, 0xffffffff, width * 4);
/* copy the source pixbuf */
if (source_pixbuf)
gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
width,
height,
retval,
1, 1);
/* Add the corner */
data [(width + 2) * 4 + 3] = 0;
data [(width + 3) * 4 + 3] = 0;
data [(width + 2) * 4 + (rowstride * 1) + 3] = 0;
data [(width + 3) * 4 + (rowstride * 1) + 3] = 0;
data [(height + 2) * rowstride + 3] = 0;
data [(height + 3) * rowstride + 3] = 0;
data [(height + 2) * rowstride + 4 + 3] = 0;
data [(height + 3) * rowstride + 4 + 3] = 0;
return retval;
}
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