Upstream version 5.34.104.0
[platform/framework/web/crosswalk.git] / src / ash / display / cursor_window_controller.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 "ash/display/cursor_window_controller.h"
6
7 #include "ash/display/display_controller.h"
8 #include "ash/display/mirror_window_controller.h"
9 #include "ash/root_window_controller.h"
10 #include "ash/shell.h"
11 #include "ash/shell_window_ids.h"
12 #include "ui/aura/env.h"
13 #include "ui/aura/root_window.h"
14 #include "ui/aura/window_delegate.h"
15 #include "ui/base/cursor/cursors_aura.h"
16 #include "ui/base/hit_test.h"
17 #include "ui/base/resource/resource_bundle.h"
18 #include "ui/compositor/dip_util.h"
19 #include "ui/gfx/canvas.h"
20 #include "ui/gfx/display.h"
21 #include "ui/gfx/image/image_skia.h"
22 #include "ui/gfx/image/image_skia_operations.h"
23
24 namespace ash {
25 namespace internal {
26
27 class CursorWindowDelegate : public aura::WindowDelegate {
28  public:
29   CursorWindowDelegate() : is_cursor_compositing_enabled_(false) {}
30   virtual ~CursorWindowDelegate() {}
31
32   // aura::WindowDelegate overrides:
33   virtual gfx::Size GetMinimumSize() const OVERRIDE { return size_; }
34   virtual gfx::Size GetMaximumSize() const OVERRIDE { return size_; }
35   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
36                                const gfx::Rect& new_bounds) OVERRIDE {}
37   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
38     return gfx::kNullCursor;
39   }
40   virtual int GetNonClientComponent(
41       const gfx::Point& point) const OVERRIDE {
42     return HTNOWHERE;
43   }
44   virtual bool ShouldDescendIntoChildForEventHandling(
45       aura::Window* child,
46       const gfx::Point& location) OVERRIDE {
47     return false;
48   }
49   virtual bool CanFocus() OVERRIDE { return false; }
50   virtual void OnCaptureLost() OVERRIDE {}
51   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
52     canvas->DrawImageInt(cursor_image_, 0, 0);
53   }
54   virtual void OnDeviceScaleFactorChanged(
55       float device_scale_factor) OVERRIDE {}
56   virtual void OnWindowDestroying() OVERRIDE {}
57   virtual void OnWindowDestroyed() OVERRIDE {}
58   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {}
59   virtual bool HasHitTestMask() const OVERRIDE { return false; }
60   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {}
61   virtual void DidRecreateLayer(ui::Layer* old_layer,
62                                 ui::Layer* new_layer) OVERRIDE {}
63
64   // Sets cursor compositing mode on/off.
65   void SetCursorCompositingEnabled(bool enabled) {
66     is_cursor_compositing_enabled_ = enabled;
67   }
68
69   // Sets the cursor image for the |display|'s scale factor.
70   void SetCursorImage(const gfx::ImageSkia& image,
71                       const gfx::Display& display) {
72     float scale_factor = display.device_scale_factor();
73     const gfx::ImageSkiaRep& image_rep = image.GetRepresentation(scale_factor);
74     if (!is_cursor_compositing_enabled_) {
75       // Note that mirror window's scale factor is always 1.0f, therefore we
76       // need to take 2x's image and paint as if it's 1x image.
77       size_ = image_rep.pixel_size();
78       cursor_image_ = gfx::ImageSkia::CreateFrom1xBitmap(image_rep.sk_bitmap());
79     } else {
80       size_ = image.size();
81       cursor_image_ = gfx::ImageSkia(
82           gfx::ImageSkiaRep(image_rep.sk_bitmap(), scale_factor));
83     }
84   }
85
86   const gfx::Size size() const { return size_; }
87
88  private:
89   bool is_cursor_compositing_enabled_;
90   gfx::ImageSkia cursor_image_;
91   gfx::Size size_;
92
93   DISALLOW_COPY_AND_ASSIGN(CursorWindowDelegate);
94 };
95
96 CursorWindowController::CursorWindowController()
97     : is_cursor_compositing_enabled_(false),
98       container_(NULL),
99       cursor_type_(ui::kCursorNone),
100       cursor_set_(ui::CURSOR_SET_NORMAL),
101       cursor_rotation_(gfx::Display::ROTATE_0),
102       delegate_(new CursorWindowDelegate()) {
103 }
104
105 CursorWindowController::~CursorWindowController() {
106   SetContainer(NULL);
107 }
108
109 void CursorWindowController::SetCursorCompositingEnabled(bool enabled) {
110   if (is_cursor_compositing_enabled_ != enabled) {
111     is_cursor_compositing_enabled_ = enabled;
112     delegate_->SetCursorCompositingEnabled(enabled);
113     UpdateCursorImage();
114     UpdateContainer();
115   }
116 }
117
118 void CursorWindowController::UpdateContainer() {
119   display_ = Shell::GetScreen()->GetPrimaryDisplay();
120   if (is_cursor_compositing_enabled_) {
121     SetDisplay(display_);
122   } else {
123     aura::RootWindow* mirror_root_window = Shell::GetInstance()->
124         display_controller()->mirror_window_controller()->root_window();
125     SetContainer(mirror_root_window ? mirror_root_window->window() : NULL);
126   }
127 }
128
129 void CursorWindowController::SetDisplay(const gfx::Display& display) {
130   if (!is_cursor_compositing_enabled_)
131     return;
132
133   display_ = display;
134   aura::Window* root_window = Shell::GetInstance()->display_controller()->
135       GetRootWindowForDisplayId(display.id());
136   if (!root_window)
137     return;
138
139   SetContainer(GetRootWindowController(root_window)->GetContainer(
140       kShellWindowId_OverlayContainer));
141   SetBoundsInScreen(display.bounds());
142 }
143
144 void CursorWindowController::UpdateLocation() {
145   if (!cursor_window_)
146     return;
147
148   gfx::Point point = aura::Env::GetInstance()->last_mouse_location();
149   if (!is_cursor_compositing_enabled_) {
150     Shell::GetPrimaryRootWindow()->GetDispatcher()->host()->ConvertPointToHost(
151         &point);
152   } else {
153     point.Offset(-bounds_in_screen_.x(), -bounds_in_screen_.y());
154   }
155   point.Offset(-hot_point_.x(), -hot_point_.y());
156   gfx::Rect bounds = cursor_window_->bounds();
157   bounds.set_origin(point);
158   cursor_window_->SetBounds(bounds);
159 }
160
161 void CursorWindowController::SetCursor(gfx::NativeCursor cursor) {
162   if (cursor_type_ == cursor.native_type() &&
163       cursor_rotation_ == display_.rotation())
164     return;
165   cursor_type_ = cursor.native_type();
166   cursor_rotation_ = display_.rotation();
167   UpdateCursorImage();
168 }
169
170 void CursorWindowController::SetCursorSet(ui::CursorSetType cursor_set) {
171   cursor_set_ = cursor_set;
172   UpdateCursorImage();
173 }
174
175 void CursorWindowController::SetVisibility(bool visible) {
176   if (!cursor_window_)
177     return;
178   if (visible)
179     cursor_window_->Show();
180   else
181     cursor_window_->Hide();
182 }
183
184 void CursorWindowController::SetContainer(aura::Window* container) {
185   if (container_ == container)
186     return;
187
188   container_ = container;
189   if (!container) {
190     cursor_window_.reset();
191     return;
192   }
193
194   if (!cursor_window_) {
195     cursor_window_.reset(new aura::Window(delegate_.get()));
196     cursor_window_->SetTransparent(true);
197     cursor_window_->Init(aura::WINDOW_LAYER_TEXTURED);
198     cursor_window_->set_ignore_events(true);
199     cursor_window_->set_owned_by_parent(false);
200   }
201
202   container->AddChild(cursor_window_.get());
203   cursor_window_->Show();
204   SetBoundsInScreen(container->bounds());
205 }
206
207 void CursorWindowController::SetBoundsInScreen(const gfx::Rect& bounds) {
208   bounds_in_screen_ = bounds;
209   UpdateLocation();
210 }
211
212 void CursorWindowController::UpdateCursorImage() {
213   int resource_id;
214   // TODO(hshi): support custom cursor set.
215   if (!ui::GetCursorDataFor(cursor_set_,
216                             cursor_type_,
217                             display_.device_scale_factor(),
218                             &resource_id,
219                             &hot_point_)) {
220     return;
221   }
222   const gfx::ImageSkia* image =
223       ResourceBundle::GetSharedInstance().GetImageSkiaNamed(resource_id);
224   gfx::ImageSkia rotated = *image;
225   if (!is_cursor_compositing_enabled_) {
226     switch (cursor_rotation_) {
227       case gfx::Display::ROTATE_0:
228         break;
229       case gfx::Display::ROTATE_90:
230         rotated = gfx::ImageSkiaOperations::CreateRotatedImage(
231             *image, SkBitmapOperations::ROTATION_90_CW);
232         hot_point_.SetPoint(
233             rotated.width() - hot_point_.y(),
234             hot_point_.x());
235         break;
236       case gfx::Display::ROTATE_180:
237         rotated = gfx::ImageSkiaOperations::CreateRotatedImage(
238             *image, SkBitmapOperations::ROTATION_180_CW);
239         hot_point_.SetPoint(
240             rotated.height() - hot_point_.x(),
241             rotated.width() - hot_point_.y());
242         break;
243       case gfx::Display::ROTATE_270:
244         rotated = gfx::ImageSkiaOperations::CreateRotatedImage(
245             *image, SkBitmapOperations::ROTATION_270_CW);
246         hot_point_.SetPoint(
247             hot_point_.y(),
248             rotated.height() - hot_point_.x());
249         break;
250     }
251   } else {
252     hot_point_ = ui::ConvertPointToDIP(Shell::GetPrimaryRootWindow()->layer(),
253                                        hot_point_);
254   }
255   delegate_->SetCursorImage(rotated, display_);
256   if (cursor_window_) {
257     cursor_window_->SetBounds(gfx::Rect(delegate_->size()));
258     cursor_window_->SchedulePaintInRect(
259         gfx::Rect(cursor_window_->bounds().size()));
260     UpdateLocation();
261   }
262 }
263
264 }  // namespace internal
265 }  // namespace ash