ozone: caca: Convert to PlatformWindow

ui/ozone/platform/caca/caca_window.h

+// Copyright 2014 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.
+
+#ifndef UI_OZONE_PLATFORM_CACA_CACA_WINDOW_H_
+#define UI_OZONE_PLATFORM_CACA_CACA_WINDOW_H_
+
+#include <caca.h>
+
+#include "base/debug/stack_trace.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "ui/events/platform/platform_event_dispatcher.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/platform/caca/scoped_caca_types.h"
+#include "ui/platform_window/platform_window.h"
+
+namespace ui {
+
+class CacaEventFactory;
+class CacaWindowManager;
+class PlatformWindowDelegate;
+
+// Basic initialization of Libcaca. This needs to be shared between SFO and EFO
+// since both need the |display_| to draw and process events respectively.
+// Note, |canvas_| needs to be here since it is needed for creating a
+// |display_|.
+class CacaWindow : public PlatformWindow, public PlatformEventDispatcher {
+ public:
+  CacaWindow(PlatformWindowDelegate* delegate,
+             CacaWindowManager* manager,
+             CacaEventFactory* event_factory,
+             const gfx::Rect& bounds);
+  virtual ~CacaWindow();
+
+  bool Initialize();
+
+  // Handlers for events received from libcaca.
+  void OnCacaQuit();
+  void OnCacaResize();
+  void OnCacaEvent(ui::Event* event);
+
+  // This is the Caca canvas size.
+  gfx::Size physical_size() const { return physical_size_; }
+  gfx::Size bitmap_size() const { return bitmap_size_; }
+  caca_display_t* display() const { return display_.get(); }
+
+  // PlatformWindow:
+  virtual gfx::Rect GetBounds() OVERRIDE;
+  virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
+  virtual void Show() OVERRIDE;
+  virtual void Hide() OVERRIDE;
+  virtual void Close() OVERRIDE;
+  virtual void SetCapture() OVERRIDE;
+  virtual void ReleaseCapture() OVERRIDE;
+  virtual void ToggleFullscreen() OVERRIDE;
+  virtual void Maximize() OVERRIDE;
+  virtual void Minimize() OVERRIDE;
+  virtual void Restore() OVERRIDE;
+
+  // PlatformEventDispatcher:
+  virtual bool CanDispatchEvent(const PlatformEvent& event) OVERRIDE;
+  virtual uint32_t DispatchEvent(const PlatformEvent& event) OVERRIDE;
+
+ private:
+  // Event polling.
+  void TryProcessingEvent();
+
+  // Sync sizes with libcaca.
+  void UpdateDisplaySize();
+
+  PlatformWindowDelegate* delegate_;
+  CacaWindowManager* manager_;
+  CacaEventFactory* event_factory_;
+  gfx::AcceleratedWidget widget_;
+
+  ScopedCacaCanvas canvas_;
+  ScopedCacaDisplay display_;
+
+  // Size of the console in characters. This can be changed by setting
+  // CACA_GEOMETRY environment variable.
+  gfx::Size physical_size_;
+
+  // Size of the backing buffer we draw into. Size in pixels.
+  gfx::Size bitmap_size_;
+
+  base::WeakPtrFactory<CacaWindow> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CacaWindow);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_CACA_CACA_WINDOW_H_