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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/ui/window_snapshot/window_snapshot.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "third_party/skia/include/core/SkBitmap.h" | |
| 9 #include "ui/aura/window.h" | |
| 10 #include "ui/compositor/compositor.h" | |
| 11 #include "ui/compositor/dip_util.h" | |
| 12 #include "ui/compositor/layer.h" | |
| 13 #include "ui/gfx/codec/png_codec.h" | |
| 14 #include "ui/gfx/rect.h" | |
| 15 | |
| 16 namespace chrome { | |
| 17 namespace internal { | |
| 18 | |
| 19 bool GrabWindowSnapshot(gfx::NativeWindow window, | |
| 20 std::vector<unsigned char>* png_representation, | |
| 21 const gfx::Rect& snapshot_bounds) { | |
| 22 ui::Compositor* compositor = window->layer()->GetCompositor(); | |
| 23 | |
| 24 gfx::Rect read_pixels_bounds = snapshot_bounds; | |
| 25 | |
| 26 // When not in compact mode we must take into account the window's position on | |
| 27 // the desktop. | |
| 28 read_pixels_bounds.Offset(window->bounds().OffsetFromOrigin()); | |
| 29 gfx::Rect read_pixels_bounds_in_pixel = | |
| 30 ui::ConvertRectToPixel(window->layer(), read_pixels_bounds); | |
| 31 | |
| 32 // Sometimes (i.e. when using Aero on Windows) the compositor's size is | |
| 33 // smaller than the window bounds. So trim appropriately. | |
| 34 read_pixels_bounds_in_pixel.Intersect(gfx::Rect(compositor->size())); | |
| 35 | |
| 36 DCHECK_LE(0, read_pixels_bounds.x()); | |
| 37 DCHECK_LE(0, read_pixels_bounds.y()); | |
| 38 | |
| 39 SkBitmap bitmap; | |
| 40 if (!compositor->ReadPixels(&bitmap, read_pixels_bounds_in_pixel)) | |
| 41 return false; | |
| 42 | |
| 43 unsigned char* pixels = reinterpret_cast<unsigned char*>(bitmap.getPixels()); | |
| 44 | |
| 45 gfx::PNGCodec::Encode(pixels, gfx::PNGCodec::FORMAT_BGRA, | |
| 46 read_pixels_bounds_in_pixel.size(), | |
| 47 bitmap.rowBytes(), true, | |
| 48 std::vector<gfx::PNGCodec::Comment>(), | |
| 49 png_representation); | |
| 50 return true; | |
| 51 } | |
| 52 | |
| 53 } // namespace internal | |
| 54 } // namespace chrome | |
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Chromium Code Reviews
Issue 11399002:
Implemented GetWindowSnapshot on RenderViewImpl (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master