aura/window.h

   1 // Copyright (c) 2011 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 #ifndef AURA_WINDOW_H_
   6 #define AURA_WINDOW_H_
   7 #pragma once
   8
   9 #include "base/basictypes.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "ui/gfx/native_widget_types.h"
  12 #include "ui/gfx/rect.h"
  13
  14 class SkCanvas;
  15
  16 namespace ui {
  17 class Layer;
  18 }
  19
  20 namespace aura {
  21
  22 class Desktop;
  23 class WindowDelegate;
  24
  25 // Aura window implementation. Interesting events are sent to the
  26 // WindowDelegate.
  27 class Window {
  28  public:
  29   enum Visibility {
  30     // Don't display the window onscreen and don't let it receive mouse
  31     // events. This is the default.
  32     VISIBILITY_HIDDEN = 1,
  33
  34     // Display the window and let it receive mouse events.
  35     VISIBILITY_SHOWN = 2,
  36
  37     // Display the window but prevent it from receiving mouse events.
  38     VISIBILITY_SHOWN_NO_INPUT = 3,
  39   };
  40
  41   explicit Window(Desktop* desktop);
  42   ~Window();
  43
  44   void set_delegate(WindowDelegate* d) { delegate_ = d; }
  45
  46   // Changes the visbility of the window.
  47   void SetVisibility(Visibility visibility);
  48   Visibility visibility() const { return visibility_; }
  49
  50   // Changes the bounds of the window.
  51   void SetBounds(const gfx::Rect& bounds, int anim_ms);
  52   const gfx::Rect& bounds() const { return bounds_; }
  53
  54   // Marks the window as needing to be painted.
  55   void SchedulePaint(const gfx::Rect& bounds);
  56
  57   // Sets the contents of the window.
  58   void SetCanvas(const SkCanvas& canvas, const gfx::Point& origin);
  59
  60   // If the window is visible its layer is drawn.
  61   void Draw();
  62
  63   // If SchedulePaint has been invoked on the Window the delegate is notified.
  64   void UpdateLayerCanvas();
  65
  66  private:
  67   // The desktop we're in.
  68   Desktop* desktop_;
  69
  70   WindowDelegate* delegate_;
  71
  72   Visibility visibility_;
  73
  74   scoped_ptr<ui::Layer> layer_;
  75
  76   // Union of regions passed to SchedulePaint. Cleaned when UpdateLayerCanvas is
  77   // invoked.
  78   gfx::Rect dirty_rect_;
  79
  80   // If true UpdateLayerCanvas paints all. This is set when the window is first
  81   // created to trigger painting the complete bounds.
  82   bool needs_paint_all_;
  83
  84   // Bounds of the window in the desktop's coordinate system.
  85   gfx::Rect bounds_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(Window);
  88 };
  89
  90 }  // namespace aura
  91
  92 #endif  // AURA_WINDOW_H_