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Support tool bar icon image also on GTK+2 with cairo

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* src/gtkutil.c (xg_get_pixbuf_from_surface) [USE_CAIRO && !HAVE_GTK3]: New
function.
(xg_get_image_for_pixmap) [USE_CAIRO && !HAVE_GTK3]: Use it.
(xg_tool_item_stale_p, update_frame_tool_bar) [USE_CAIRO && !HAVE_GTK3]: Use
cairo code also on GTK+2.
This commit is contained in:
YAMAMOTO Mitsuharu 2019-05-28 17:31:57 +09:00
parent f113512ffc
commit c617b4bf1e
1 changed files with 64 additions and 5 deletions
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69
src/gtkutil.c
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@ -279,6 +279,51 @@ xg_get_pixbuf_from_pix_and_mask (struct frame *f,
return icon_buf;
}
#if defined USE_CAIRO && !defined HAVE_GTK3
static GdkPixbuf *
xg_get_pixbuf_from_surface (struct frame *f, cairo_surface_t *surface)
{
int width = cairo_image_surface_get_width (surface);
int height = cairo_image_surface_get_height (surface);
GdkPixbuf *icon_buf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
width, height);
if (icon_buf)
{
guchar *pixels = gdk_pixbuf_get_pixels (icon_buf);
int rowstride = gdk_pixbuf_get_rowstride (icon_buf);
cairo_surface_t *icon_surface
= cairo_image_surface_create_for_data (pixels, CAIRO_FORMAT_ARGB32,
width, height, rowstride);
cairo_t *cr = cairo_create (icon_surface);
cairo_surface_destroy (icon_surface);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_paint (cr);
cairo_destroy (cr);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
guint32 argb = ((guint32 *) pixels)[x];
#ifdef WORDS_BIGENDIAN
/* ARGB -> RGBA (gdk_pixbuf, big endian) */
((guint32 *) pixels)[x] = (argb << 8) | (argb >> 24);
#else /* !WORDS_BIGENDIAN */
/* ARGB -> ABGR (gdk_pixbuf, little endian) */
((guint32 *) pixels)[x] = (( argb & 0xff00ff00)
| ((argb << 16) & 0x00ff0000)
| ((argb >> 16) & 0x000000ff));
#endif /* !WORDS_BIGENDIAN */
}
pixels += rowstride;
}
}
return icon_buf;
}
#endif /* USE_CAIRO && !HAVE_GTK3 */
static Lisp_Object
file_for_image (Lisp_Object image)
{
@ -311,7 +356,7 @@ xg_get_image_for_pixmap (struct frame *f,
GtkWidget *widget,
GtkImage *old_widget)
{
#if defined USE_CAIRO && defined HAVE_GTK3
#ifdef USE_CAIRO
cairo_surface_t *surface;
#else
GdkPixbuf *icon_buf;
@ -343,15 +388,29 @@ xg_get_image_for_pixmap (struct frame *f,
on a monochrome display, and sometimes bad on all displays with
certain themes. */
#if defined USE_CAIRO && defined HAVE_GTK3
#ifdef USE_CAIRO
surface = img->cr_data;
if (surface)
{
#ifdef HAVE_GTK3
if (! old_widget)
old_widget = GTK_IMAGE (gtk_image_new_from_surface (surface));
else
gtk_image_set_from_surface (old_widget, surface);
#else /* !HAVE_GTK3 */
GdkPixbuf *icon_buf = xg_get_pixbuf_from_surface (f, surface);
if (icon_buf)
{
if (! old_widget)
old_widget = GTK_IMAGE (gtk_image_new_from_pixbuf (icon_buf));
else
gtk_image_set_from_pixbuf (old_widget, icon_buf);
g_object_unref (G_OBJECT (icon_buf));
}
#endif /* !HAVE_GTK3 */
}
#else
/* This is a workaround to make icons look good on pseudo color
@ -4689,7 +4748,7 @@ xg_tool_item_stale_p (GtkWidget *wbutton, const char *stock_name,
{
gpointer gold_img = g_object_get_data (G_OBJECT (wimage),
XG_TOOL_BAR_IMAGE_DATA);
#if defined USE_CAIRO && defined HAVE_GTK3
#ifdef USE_CAIRO
void *old_img = (void *) gold_img;
if (old_img != img->cr_data)
return 1;
@ -4990,7 +5049,7 @@ update_frame_tool_bar (struct frame *f)
prepare_image_for_display (f, img);
if (img->load_failed_p
#if defined USE_CAIRO && defined HAVE_GTK3
#ifdef USE_CAIRO
|| img->cr_data == NULL
#else
|| img->pixmap == None
@ -5045,7 +5104,7 @@ update_frame_tool_bar (struct frame *f)
{
w = xg_get_image_for_pixmap (f, img, x->widget, NULL);
g_object_set_data (G_OBJECT (w), XG_TOOL_BAR_IMAGE_DATA,
#if defined USE_CAIRO && defined HAVE_GTK3
#ifdef USE_CAIRO
(gpointer)img->cr_data
#else
(gpointer)img->pixmap