content/browser/compositor/software_output_device_x11.cc

   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_x11.h"
   6
   7 #include <X11/Xlib.h>
   8 #include <X11/Xutil.h>
   9
  10 #include "content/public/browser/browser_thread.h"
  11 #include "third_party/skia/include/core/SkBitmap.h"
  12 #include "third_party/skia/include/core/SkDevice.h"
  13 #include "ui/compositor/compositor.h"
  14 #include "ui/gfx/x/x11_types.h"
  15
  16 namespace content {
  17
  18 SoftwareOutputDeviceX11::SoftwareOutputDeviceX11(ui::Compositor* compositor)
  19     : compositor_(compositor), display_(gfx::GetXDisplay()), gc_(NULL) {
  20   // TODO(skaslev) Remove this when crbug.com/180702 is fixed.
  21   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  22
  23   gc_ = XCreateGC(display_, compositor_->widget(), 0, NULL);
  24   if (!XGetWindowAttributes(display_, compositor_->widget(), &attributes_)) {
  25     LOG(ERROR) << "XGetWindowAttributes failed for window "
  26                << compositor_->widget();
  27     return;
  28   }
  29 }
  30
  31 SoftwareOutputDeviceX11::~SoftwareOutputDeviceX11() {
  32   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  33
  34   XFreeGC(display_, gc_);
  35 }
  36
  37 void SoftwareOutputDeviceX11::EndPaint(cc::SoftwareFrameData* frame_data) {
  38   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  39   DCHECK(canvas_);
  40   DCHECK(frame_data);
  41
  42   if (!canvas_)
  43     return;
  44
  45   SoftwareOutputDevice::EndPaint(frame_data);
  46
  47   gfx::Rect rect = damage_rect_;
  48   rect.Intersect(gfx::Rect(viewport_size_));
  49   if (rect.IsEmpty())
  50     return;
  51
  52   // TODO(jbauman): Switch to XShmPutImage since it's async.
  53   SkImageInfo info;
  54   size_t rowBytes;
  55   const void* addr = canvas_->peekPixels(&info, &rowBytes);
  56   gfx::PutARGBImage(display_,
  57                     attributes_.visual,
  58                     attributes_.depth,
  59                     compositor_->widget(),
  60                     gc_,
  61                     static_cast<const uint8*>(addr),
  62                     viewport_size_.width(),
  63                     viewport_size_.height(),
  64                     rect.x(),
  65                     rect.y(),
  66                     rect.x(),
  67                     rect.y(),
  68                     rect.width(),
  69                     rect.height());
  70 }
  71
  72 }  // namespace content