diff options
Diffstat (limited to 'gtk/gdk.c')
| -rw-r--r-- | gtk/gdk.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/gtk/gdk.c b/gtk/gdk.c deleted file mode 100644 index 9ed90bd8e..000000000 --- a/gtk/gdk.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Copyright 2011 Vincent Sanders <vince@netsurf-browser.org> - * - * This file is part of NetSurf, http://www.netsurf-browser.org/ - * - * NetSurf is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * NetSurf is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <string.h> - -#include "utils/log.h" - -#include "gtk/gdk.h" - -static void -convert_alpha(guchar *dest_data, - int dest_stride, - guchar *src_data, - int src_stride, - int width, - int height) -{ - int x, y; - - for (y = 0; y < height; y++) { - guint32 *src = (guint32 *) src_data; - - for (x = 0; x < width; x++) { - guint alpha = src[x] >> 24; - - if (alpha == 0) { - dest_data[x * 4 + 0] = 0; - dest_data[x * 4 + 1] = 0; - dest_data[x * 4 + 2] = 0; - } else { - dest_data[x * 4 + 0] = (((src[x] & 0xff0000) >> 16) * 255 + alpha / 2) / alpha; - dest_data[x * 4 + 1] = (((src[x] & 0x00ff00) >> 8) * 255 + alpha / 2) / alpha; - dest_data[x * 4 + 2] = (((src[x] & 0x0000ff) >> 0) * 255 + alpha / 2) / alpha; - } - dest_data[x * 4 + 3] = alpha; - } - - src_data += src_stride; - dest_data += dest_stride; - } -} - - -GdkPixbuf * -nsgdk_pixbuf_get_from_surface(cairo_surface_t *surface, int scwidth, int scheight) -{ - int width, height; /* source width and height */ - cairo_surface_t *scsurface; /* scaled surface */ - cairo_t *cr; /* cairo context for scaled surface */ - GdkPixbuf *pixbuf; /* The result pixel buffer */ - - /* create pixmap */ - pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, scwidth, scheight); - if (pixbuf == NULL) { - return NULL; - } - - memset(gdk_pixbuf_get_pixels(pixbuf), - 0xff, - gdk_pixbuf_get_rowstride(pixbuf) * scheight); - - /* scale cairo surface into new surface the target size */ - cairo_surface_flush(surface); /* ensure source surface is ready */ - - /* get source surface dimensions */ - width = cairo_image_surface_get_width(surface); - height = cairo_image_surface_get_height(surface); - - /* scaled surface always has an alpha chanel for ease */ - scsurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, scwidth, scheight); - if (cairo_surface_status(scsurface) != CAIRO_STATUS_SUCCESS) { - cairo_surface_destroy(scsurface); - g_object_unref(pixbuf); - LOG("Surface creation failed"); - return NULL; - } - - cr = cairo_create(scsurface); - - /* Scale *before* setting the source surface */ - cairo_scale(cr, (double)scwidth / width, (double)scheight / height); - cairo_set_source_surface(cr, surface, 0, 0); - - /* To avoid getting the edge pixels blended with 0 - * alpha, which would occur with the default - * EXTEND_NONE. Use EXTEND_PAD for 1.2 or newer - */ - cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REFLECT); - - /* Replace the destination with the source instead of overlaying */ - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - - /* Do the actual drawing */ - cairo_paint(cr); - - cairo_destroy(cr); - - /* copy data from surface into pixmap */ - convert_alpha(gdk_pixbuf_get_pixels(pixbuf), - gdk_pixbuf_get_rowstride(pixbuf), - cairo_image_surface_get_data(scsurface), - cairo_image_surface_get_stride(scsurface), - scwidth, scheight); - - cairo_surface_destroy(scsurface); - - return pixbuf; -} - |