Index: chrome/browser/ui/window_snapshot/window_snapshot_x.cc |
diff --git a/chrome/browser/ui/window_snapshot/window_snapshot_x.cc b/chrome/browser/ui/window_snapshot/window_snapshot_x.cc |
new file mode 100755 |
index 0000000000000000000000000000000000000000..48f8169079888029f2bbfc340e3da70911c78db2 |
--- /dev/null |
+++ b/chrome/browser/ui/window_snapshot/window_snapshot_x.cc |
@@ -0,0 +1,66 @@ |
+// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "chrome/browser/ui/window_snapshot/window_snapshot.h" |
+ |
+#include <gdk/gdkx.h> |
+#include <gtk/gtk.h> |
+ |
+#include "base/logging.h" |
+#include "gfx/rect.h" |
+#include "ui/base/x/x11_util.h" |
+ |
+namespace browser { |
+ |
+static cairo_status_t SnapshotCallback( |
+ void *closure, const unsigned char *data, unsigned int length) { |
+ std::vector<unsigned char>* png_representation = |
+ static_cast<std::vector<unsigned char>*>(closure); |
+ |
+ size_t old_size = png_representation->size(); |
+ png_representation->resize(old_size + length); |
+ memcpy(&(*png_representation)[old_size], data, length); |
+ return CAIRO_STATUS_SUCCESS; |
+} |
+ |
+gfx::Rect GrabWindowSnapshot(gfx::NativeWindow gtk_window, |
+ std::vector<unsigned char>* png_representation) { |
+ GdkWindow* gdk_window = GTK_WIDGET(gtk_window)->window; |
+ Display* display = GDK_WINDOW_XDISPLAY(gdk_window); |
+ XID win = GDK_WINDOW_XID(gdk_window); |
+ XWindowAttributes attr; |
+ if (XGetWindowAttributes(display, win, &attr) == 0) { |
+ LOG(ERROR) << "Couldn't get window attributes"; |
+ return gfx::Rect(); |
+ } |
+ XImage* image = XGetImage( |
+ display, win, 0, 0, attr.width, attr.height, AllPlanes, ZPixmap); |
+ if (!image) { |
+ LOG(ERROR) << "Couldn't get image"; |
+ return gfx::Rect(); |
+ } |
+ if (image->depth != 24) { |
+ LOG(ERROR)<< "Unsupported image depth " << image->depth; |
+ return gfx::Rect(); |
+ } |
+ cairo_surface_t* surface = |
+ cairo_image_surface_create_for_data( |
+ reinterpret_cast<unsigned char*>(image->data), |
+ CAIRO_FORMAT_RGB24, |
+ image->width, |
+ image->height, |
+ image->bytes_per_line); |
+ |
+ if (!surface) { |
+ LOG(ERROR) << "Unable to create Cairo surface from XImage data"; |
+ return gfx::Rect(); |
+ } |
+ cairo_surface_write_to_png_stream( |
+ surface, SnapshotCallback, png_representation); |
+ cairo_surface_destroy(surface); |
+ |
+ return gfx::Rect(image->width, image->height); |
+} |
+ |
+} // namespace browser |