chromecast/graphics/osd_plane_default.cc

   1 // Copyright 2015 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 "base/memory/scoped_ptr.h"
   6 #include "chromecast/public/graphics_types.h"
   7 #include "chromecast/public/osd_plane.h"
   8 #include "chromecast/public/osd_plane_shlib.h"
   9 #include "chromecast/public/osd_surface.h"
  10
  11 namespace chromecast {
  12 namespace {
  13
  14 // Default no-op OsdSurface implementation
  15 class OsdSurfaceDefault : public OsdSurface {
  16  public:
  17   OsdSurfaceDefault(const Size& size) : size_(size) {}
  18
  19   // OsdSurface implementation:
  20   void Blit(OsdSurface* src_surface,
  21             const Rect& src_rect,
  22             const Point& dst_point) override {}
  23   void Composite(OsdSurface* src_surface,
  24                  const Rect& src_rect,
  25                  const Point& dst_point) override {}
  26   void CopyBitmap(char* src_bitmap,
  27                   const Rect& src_rect,
  28                   const Rect& damage_rect,
  29                   const Point& dst_point) override {}
  30   void Fill(const Rect& rect, int argb) override {}
  31
  32   const Size& size() const override { return size_; }
  33
  34  private:
  35   const Size size_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(OsdSurfaceDefault);
  38 };
  39
  40 // Default no-op OsdPlane implementation
  41 class OsdPlaneDefault : public OsdPlane {
  42  public:
  43   OsdPlaneDefault() : size_(0, 0) {}
  44
  45   // OsdPlane implementation:
  46   OsdSurface* CreateSurface(const Size& size) override {
  47     return new OsdSurfaceDefault(size);
  48   }
  49   void SetClipRectangle(const Rect& rect) override {
  50     size_ = Size(rect.width, rect.height);
  51   }
  52   OsdSurface* GetBackBuffer() override {
  53     if (!back_buffer_)
  54       back_buffer_.reset(new OsdSurfaceDefault(size_));
  55     return back_buffer_.get();
  56   }
  57
  58   void Flip() override {}
  59
  60  private:
  61   scoped_ptr<OsdSurface> back_buffer_;
  62   Size size_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(OsdPlaneDefault);
  65 };
  66
  67 }  // namespace
  68
  69 OsdPlane* OsdPlaneShlib::Create(const std::vector<std::string>& argv) {
  70   return new OsdPlaneDefault;
  71 }
  72
  73 }  // namespace chromecast