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| 1 // Copyright 2014 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 "content/browser/compositor/software_output_device_win.h" | |
| 6 | |
| 7 #include "content/public/browser/browser_thread.h" | |
| 8 #include "third_party/skia/include/core/SkBitmap.h" | |
| 9 #include "third_party/skia/include/core/SkDevice.h" | |
| 10 #include "ui/compositor/compositor.h" | |
| 11 #include "ui/gfx/canvas.h" | |
| 12 #include "ui/gfx/canvas_skia_paint.h" | |
| 13 #include "ui/gfx/gdi_util.h" | |
| 14 #include "ui/gfx/skia_util.h" | |
| 15 | |
| 16 namespace content { | |
| 17 | |
| 18 SoftwareOutputDeviceWin::SoftwareOutputDeviceWin(ui::Compositor* compositor) | |
| 19 : hwnd_(compositor->widget()), | |
| 20 is_hwnd_composited_(false) { | |
| 21 // TODO(skaslev) Remove this when crbug.com/180702 is fixed. | |
| 22 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 23 | |
| 24 LONG style = GetWindowLong(hwnd_, GWL_EXSTYLE); | |
| 25 is_hwnd_composited_ = !!(style & WS_EX_COMPOSITED); | |
| 26 } | |
| 27 | |
| 28 SoftwareOutputDeviceWin::~SoftwareOutputDeviceWin() { | |
| 29 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 30 } | |
| 31 | |
| 32 void SoftwareOutputDeviceWin::Resize(gfx::Size viewport_size) { | |
| 33 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 34 | |
| 35 if (viewport_size_ == viewport_size) | |
| 36 return; | |
| 37 | |
| 38 viewport_size_ = viewport_size; | |
| 39 contents_.reset(new gfx::Canvas(viewport_size, 1.0f, true)); | |
| 40 memset(&bitmap_info_, 0, sizeof(bitmap_info_)); | |
| 41 gfx::CreateBitmapHeader(viewport_size_.width(), viewport_size_.height(), | |
| 42 &bitmap_info_.bmiHeader); | |
| 43 } | |
| 44 | |
| 45 SkCanvas* SoftwareOutputDeviceWin::BeginPaint(const gfx::Rect& damage_rect) { | |
| 46 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 47 DCHECK(contents_); | |
| 48 | |
| 49 damage_rect_ = damage_rect; | |
| 50 return contents_ ? contents_->sk_canvas() : NULL; | |
| 51 } | |
| 52 | |
| 53 void SoftwareOutputDeviceWin::EndPaint(cc::SoftwareFrameData* frame_data) { | |
| 54 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 55 DCHECK(contents_); | |
| 56 DCHECK(frame_data); | |
| 57 | |
| 58 if (!contents_) | |
| 59 return; | |
| 60 | |
| 61 SoftwareOutputDevice::EndPaint(frame_data); | |
| 62 | |
| 63 gfx::Rect rect = damage_rect_; | |
| 64 rect.Intersect(gfx::Rect(viewport_size_)); | |
| 65 if (rect.IsEmpty()) | |
| 66 return; | |
| 67 | |
| 68 SkCanvas* canvas = contents_->sk_canvas(); | |
| 69 DCHECK(canvas); | |
| 70 if (is_hwnd_composited_) { | |
| 71 RECT wr; | |
| 72 GetWindowRect(hwnd_, &wr); | |
| 73 SIZE size = {wr.right - wr.left, wr.bottom - wr.top}; | |
| 74 POINT position = {wr.left, wr.top}; | |
| 75 POINT zero = {0, 0}; | |
| 76 BLENDFUNCTION blend = {AC_SRC_OVER, 0x00, 0xFF, AC_SRC_ALPHA}; | |
| 77 | |
| 78 DWORD style = GetWindowLong(hwnd_, GWL_EXSTYLE); | |
| 79 style &= ~WS_EX_COMPOSITED; | |
| 80 style |= WS_EX_LAYERED; | |
| 81 SetWindowLong(hwnd_, GWL_EXSTYLE, style); | |
| 82 | |
| 83 HDC dib_dc = skia::BeginPlatformPaint(canvas); | |
| 84 ::UpdateLayeredWindow(hwnd_, NULL, &position, &size, dib_dc, &zero, | |
| 85 RGB(0xFF, 0xFF, 0xFF), &blend, ULW_ALPHA); | |
| 86 skia::EndPlatformPaint(canvas); | |
| 87 } else { | |
| 88 HDC hdc = ::GetDC(hwnd_); | |
| 89 RECT src_rect = rect.ToRECT(); | |
| 90 skia::DrawToNativeContext(canvas, hdc, rect.x(), rect.y(), &src_rect); | |
| 91 ::ReleaseDC(hwnd_, hdc); | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 void SoftwareOutputDeviceWin::CopyToBitmap( | |
| 96 const gfx::Rect& rect, SkBitmap* output) { | |
| 97 DCHECK(contents_); | |
| 98 SkBaseDevice* device = contents_->sk_canvas()->getDevice(); | |
| 99 const SkBitmap& bitmap = device->accessBitmap(false); | |
| 100 bitmap.extractSubset(output, gfx::RectToSkIRect(rect)); | |
| 101 } | |
| 102 | |
| 103 } // namespace content | |
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