Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / third_party / skia / src / views / SkWindow.cpp
1
2 /*
3  * Copyright 2011 Google Inc.
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 #include "SkWindow.h"
9 #include "SkCanvas.h"
10 #include "SkDevice.h"
11 #include "SkOSMenu.h"
12 #include "SkSystemEventTypes.h"
13 #include "SkTime.h"
14
15 #define SK_EventDelayInval "\xd" "n" "\xa" "l"
16
17 #define TEST_BOUNDERx
18
19 #include "SkBounder.h"
20 class TestSkBounder : public SkBounder {
21 public:
22     explicit TestSkBounder(const SkBitmap& bm) : fCanvas(bm) {}
23
24 protected:
25     virtual bool onIRect(const SkIRect& r) SK_OVERRIDE {
26         SkRect    rr;
27
28         rr.set(SkIntToScalar(r.fLeft), SkIntToScalar(r.fTop),
29                 SkIntToScalar(r.fRight), SkIntToScalar(r.fBottom));
30
31         SkPaint    p;
32
33         p.setStyle(SkPaint::kStroke_Style);
34         p.setColor(SK_ColorYELLOW);
35
36 #if 0
37         rr.inset(SK_ScalarHalf, SK_ScalarHalf);
38 #else
39         rr.inset(-SK_ScalarHalf, -SK_ScalarHalf);
40 #endif
41
42         fCanvas.drawRect(rr, p);
43         return true;
44     }
45 private:
46     SkCanvas    fCanvas;
47 };
48
49 SkWindow::SkWindow() : fFocusView(NULL) {
50     fClicks.reset();
51     fWaitingOnInval = false;
52
53 #ifdef SK_BUILD_FOR_WINCE
54     fColorType = kRGB_565_SkColorType;
55 #else
56     fColorType = kN32_SkColorType;
57 #endif
58
59     fMatrix.reset();
60 }
61
62 SkWindow::~SkWindow() {
63     fClicks.deleteAll();
64     fMenus.deleteAll();
65 }
66
67 SkCanvas* SkWindow::createCanvas() {
68     return new SkCanvas(this->getBitmap());
69 }
70
71 void SkWindow::setMatrix(const SkMatrix& matrix) {
72     if (fMatrix != matrix) {
73         fMatrix = matrix;
74         this->inval(NULL);
75     }
76 }
77
78 void SkWindow::preConcat(const SkMatrix& matrix) {
79     SkMatrix m;
80     m.setConcat(fMatrix, matrix);
81     this->setMatrix(m);
82 }
83
84 void SkWindow::postConcat(const SkMatrix& matrix) {
85     SkMatrix m;
86     m.setConcat(matrix, fMatrix);
87     this->setMatrix(m);
88 }
89
90 void SkWindow::setColorType(SkColorType ct) {
91     this->resize(fBitmap.width(), fBitmap.height(), ct);
92 }
93
94 void SkWindow::resize(int width, int height, SkColorType ct) {
95     if (ct == kUnknown_SkColorType)
96         ct = fColorType;
97
98     if (width != fBitmap.width() || height != fBitmap.height() || ct != fColorType) {
99         fColorType = ct;
100         fBitmap.allocPixels(SkImageInfo::Make(width, height,
101                                               ct, kPremul_SkAlphaType));
102
103         this->setSize(SkIntToScalar(width), SkIntToScalar(height));
104         this->inval(NULL);
105     }
106 }
107
108 bool SkWindow::handleInval(const SkRect* localR) {
109     SkIRect ir;
110
111     if (localR) {
112         SkRect devR;
113         SkMatrix inverse;
114         if (!fMatrix.invert(&inverse)) {
115             return false;
116         }
117         fMatrix.mapRect(&devR, *localR);
118         devR.round(&ir);
119     } else {
120         ir.set(0, 0,
121                SkScalarRoundToInt(this->width()),
122                SkScalarRoundToInt(this->height()));
123     }
124     fDirtyRgn.op(ir, SkRegion::kUnion_Op);
125
126     this->onHandleInval(ir);
127     return true;
128 }
129
130 void SkWindow::forceInvalAll() {
131     fDirtyRgn.setRect(0, 0,
132                       SkScalarCeilToInt(this->width()),
133                       SkScalarCeilToInt(this->height()));
134 }
135
136 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
137     #include <windows.h>
138     #include <gx.h>
139     extern GXDisplayProperties gDisplayProps;
140 #endif
141
142 #ifdef SK_SIMULATE_FAILED_MALLOC
143 extern bool gEnableControlledThrow;
144 #endif
145
146 bool SkWindow::update(SkIRect* updateArea) {
147     if (!fDirtyRgn.isEmpty()) {
148         SkBitmap bm = this->getBitmap();
149
150 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
151         char* buffer = (char*)GXBeginDraw();
152         SkASSERT(buffer);
153
154         RECT    rect;
155         GetWindowRect((HWND)((SkOSWindow*)this)->getHWND(), &rect);
156         buffer += rect.top * gDisplayProps.cbyPitch + rect.left * gDisplayProps.cbxPitch;
157
158         bm.setPixels(buffer);
159 #endif
160
161         SkAutoTUnref<SkCanvas> canvas(this->createCanvas());
162
163         canvas->clipRegion(fDirtyRgn);
164         if (updateArea)
165             *updateArea = fDirtyRgn.getBounds();
166
167         SkAutoCanvasRestore acr(canvas, true);
168         canvas->concat(fMatrix);
169
170         // empty this now, so we can correctly record any inval calls that
171         // might be made during the draw call.
172         fDirtyRgn.setEmpty();
173
174 #ifdef TEST_BOUNDER
175         TestSkBounder bounder(bm);
176         canvas->setBounder(&bounder);
177 #endif
178 #ifdef SK_SIMULATE_FAILED_MALLOC
179         gEnableControlledThrow = true;
180 #endif
181 #ifdef SK_BUILD_FOR_WIN32
182         //try {
183             this->draw(canvas);
184         //}
185         //catch (...) {
186         //}
187 #else
188         this->draw(canvas);
189 #endif
190 #ifdef SK_SIMULATE_FAILED_MALLOC
191         gEnableControlledThrow = false;
192 #endif
193 #ifdef TEST_BOUNDER
194         canvas->setBounder(NULL);
195 #endif
196
197 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
198         GXEndDraw();
199 #endif
200
201         return true;
202     }
203     return false;
204 }
205
206 bool SkWindow::handleChar(SkUnichar uni) {
207     if (this->onHandleChar(uni))
208         return true;
209
210     SkView* focus = this->getFocusView();
211     if (focus == NULL)
212         focus = this;
213
214     SkEvent evt(SK_EventType_Unichar);
215     evt.setFast32(uni);
216     return focus->doEvent(evt);
217 }
218
219 bool SkWindow::handleKey(SkKey key) {
220     if (key == kNONE_SkKey)
221         return false;
222
223     if (this->onHandleKey(key))
224         return true;
225
226     // send an event to the focus-view
227     {
228         SkView* focus = this->getFocusView();
229         if (focus == NULL)
230             focus = this;
231
232         SkEvent evt(SK_EventType_Key);
233         evt.setFast32(key);
234         if (focus->doEvent(evt))
235             return true;
236     }
237
238     if (key == kUp_SkKey || key == kDown_SkKey) {
239         if (this->moveFocus(key == kUp_SkKey ? kPrev_FocusDirection : kNext_FocusDirection) == NULL)
240             this->onSetFocusView(NULL);
241         return true;
242     }
243     return false;
244 }
245
246 bool SkWindow::handleKeyUp(SkKey key) {
247     if (key == kNONE_SkKey)
248         return false;
249
250     if (this->onHandleKeyUp(key))
251         return true;
252
253     //send an event to the focus-view
254     {
255         SkView* focus = this->getFocusView();
256         if (focus == NULL)
257             focus = this;
258
259         //should this one be the same?
260         SkEvent evt(SK_EventType_KeyUp);
261         evt.setFast32(key);
262         if (focus->doEvent(evt))
263             return true;
264     }
265     return false;
266 }
267
268 void SkWindow::addMenu(SkOSMenu* menu) {
269     *fMenus.append() = menu;
270     this->onAddMenu(menu);
271 }
272
273 void SkWindow::setTitle(const char title[]) {
274     if (NULL == title) {
275         title = "";
276     }
277     fTitle.set(title);
278     this->onSetTitle(title);
279 }
280
281 bool SkWindow::onEvent(const SkEvent& evt) {
282     if (evt.isType(SK_EventDelayInval)) {
283         for (SkRegion::Iterator iter(fDirtyRgn); !iter.done(); iter.next())
284             this->onHandleInval(iter.rect());
285         fWaitingOnInval = false;
286         return true;
287     }
288     return this->INHERITED::onEvent(evt);
289 }
290
291 bool SkWindow::onGetFocusView(SkView** focus) const {
292     if (focus)
293         *focus = fFocusView;
294     return true;
295 }
296
297 bool SkWindow::onSetFocusView(SkView* focus) {
298     if (fFocusView != focus) {
299         if (fFocusView)
300             fFocusView->onFocusChange(false);
301         fFocusView = focus;
302         if (focus)
303             focus->onFocusChange(true);
304     }
305     return true;
306 }
307
308 void SkWindow::onHandleInval(const SkIRect&) {
309 }
310
311 bool SkWindow::onHandleChar(SkUnichar) {
312     return false;
313 }
314
315 bool SkWindow::onHandleKey(SkKey) {
316     return false;
317 }
318
319 bool SkWindow::onHandleKeyUp(SkKey) {
320     return false;
321 }
322
323 bool SkWindow::handleClick(int x, int y, Click::State state, void *owner,
324                            unsigned modifierKeys) {
325     return this->onDispatchClick(x, y, state, owner, modifierKeys);
326 }
327
328 bool SkWindow::onDispatchClick(int x, int y, Click::State state,
329                                void* owner, unsigned modifierKeys) {
330     bool handled = false;
331
332     // First, attempt to find an existing click with this owner.
333     int index = -1;
334     for (int i = 0; i < fClicks.count(); i++) {
335         if (owner == fClicks[i]->fOwner) {
336             index = i;
337             break;
338         }
339     }
340
341     switch (state) {
342         case Click::kDown_State: {
343             if (index != -1) {
344                 delete fClicks[index];
345                 fClicks.remove(index);
346             }
347             Click* click = this->findClickHandler(SkIntToScalar(x),
348                                                   SkIntToScalar(y), modifierKeys);
349
350             if (click) {
351                 click->fOwner = owner;
352                 *fClicks.append() = click;
353                 SkView::DoClickDown(click, x, y, modifierKeys);
354                 handled = true;
355             }
356             break;
357         }
358         case Click::kMoved_State:
359             if (index != -1) {
360                 SkView::DoClickMoved(fClicks[index], x, y, modifierKeys);
361                 handled = true;
362             }
363             break;
364         case Click::kUp_State:
365             if (index != -1) {
366                 SkView::DoClickUp(fClicks[index], x, y, modifierKeys);
367                 delete fClicks[index];
368                 fClicks.remove(index);
369                 handled = true;
370             }
371             break;
372         default:
373             // Do nothing
374             break;
375     }
376     return handled;
377 }