SampleApp.cpp revision b4f4c02eff590426c5e602902922a6c5e768e2ff 
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 "SampleApp.h"
9
10#include "SkData.h"
11#include "SkCanvas.h"
12#include "SkDevice.h"
13#include "SkGpuDevice.h"
14#include "SkGraphics.h"
15#include "SkImageEncoder.h"
16#include "SkPaint.h"
17#include "SkPicture.h"
18#include "SkStream.h"
19#include "SkTime.h"
20#include "SkWindow.h"
21
22#include "SampleCode.h"
23#include "GrContext.h"
24#include "SkTypeface.h"
25
26#include "GrGLInterface.h"
27
28#include "SkPDFDevice.h"
29#include "SkPDFDocument.h"
30#include "SkStream.h"
31
32#define TEST_GPIPE
33
34#ifdef  TEST_GPIPE
35#define PIPE_FILEx
36#ifdef  PIPE_FILE
37#define FILE_PATH "/path/to/drawing.data"
38#endif
39
40#define PIPE_NETx
41#ifdef  PIPE_NET
42#include "SkSockets.h"
43SkTCPServer gServer;
44#endif
45
46#define DEBUGGERx
47#ifdef  DEBUGGER
48extern SkView* create_debugger(const char* data, size_t size);
49extern bool is_debugger(SkView* view);
50SkTDArray<char> gTempDataStore;
51#endif
52
53#endif
54
55#define USE_ARROWS_FOR_ZOOM true
56//#define DEFAULT_TO_GPU
57
58extern SkView* create_overview(int, const SkViewFactory[]);
59extern bool is_overview(SkView* view);
60extern SkView* create_transition(SkView*, SkView*, int);
61extern bool is_transition(SkView* view);
62
63
64#define ANIMATING_EVENTTYPE "nextSample"
65#define ANIMATING_DELAY     750
66
67#ifdef SK_DEBUG
68    #define FPS_REPEAT_MULTIPLIER   1
69#else
70    #define FPS_REPEAT_MULTIPLIER   10
71#endif
72#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
73
74static SampleWindow* gSampleWindow;
75
76///////////////
77class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
78public:
79
80    DefaultDeviceManager() {
81        fGrRenderTarget = NULL;
82        fGrContext = NULL;
83    }
84
85    virtual ~DefaultDeviceManager() {
86        SkSafeUnref(fGrRenderTarget);
87        SkSafeUnref(fGrContext);
88    }
89
90    virtual void init(SampleWindow* win) {
91        win->attachGL();
92        if (NULL == fGrContext) {
93            fGrContext = GrContext::Create(kOpenGL_Shaders_GrEngine, NULL);
94        }
95        if (NULL == fGrContext) {
96            SkDebugf("Failed to setup 3D");
97            win->detachGL();
98        }
99    }
100
101    virtual bool supportsDeviceType(SampleWindow::DeviceType dType) {
102        switch (dType) {
103            case kRaster_DeviceType:
104            case kPicture_DeviceType: // fallthru
105                return true;
106            case kGPU_DeviceType:
107                return NULL != fGrContext && NULL != fGrRenderTarget;
108            default:
109                return false;
110        }
111    }
112
113    virtual bool prepareCanvas(SampleWindow::DeviceType dType,
114                               SkCanvas* canvas,
115                               SampleWindow* win) {
116        if (kGPU_DeviceType == dType) {
117            if (fGrContext) {
118                canvas->setDevice(new SkGpuDevice(fGrContext,
119                                                fGrRenderTarget))->unref();
120            } else {
121                return false;
122            }
123        }
124        return true;
125    }
126
127    virtual void publishCanvas(SampleWindow::DeviceType dType,
128                               SkCanvas* canvas,
129                               SampleWindow* win) {
130        if (fGrContext) {
131            // in case we have queued drawing calls
132            fGrContext->flush();
133            if (dType != kGPU_DeviceType) {
134                // need to send the raster bits to the (gpu) window
135                fGrContext->setRenderTarget(fGrRenderTarget);
136                const SkBitmap& bm = win->getBitmap();
137                fGrContext->writePixels(0, 0, bm.width(), bm.height(),
138                                        kRGBA_8888_GrPixelConfig, bm.getPixels(),
139                                        bm.rowBytes());
140            }
141        }
142        win->presentGL();
143    }
144
145    virtual void windowSizeChanged(SampleWindow* win) {
146        if (fGrContext) {
147            win->attachGL();
148
149            GrPlatformSurfaceDesc desc;
150            desc.reset();
151            desc.fSurfaceType = kRenderTarget_GrPlatformSurfaceType;
152            desc.fWidth = SkScalarRound(win->width());
153            desc.fHeight = SkScalarRound(win->height());
154            desc.fConfig = kRGBA_8888_GrPixelConfig;
155            GR_GL_GetIntegerv(GR_GL_STENCIL_BITS, &desc.fStencilBits);
156            GR_GL_GetIntegerv(GR_GL_SAMPLES, &desc.fSampleCnt);
157            GrGLint buffer;
158            GR_GL_GetIntegerv(GR_GL_FRAMEBUFFER_BINDING, &buffer);
159            desc.fPlatformRenderTarget = buffer;
160
161            SkSafeUnref(fGrRenderTarget);
162            fGrRenderTarget = static_cast<GrRenderTarget*>(
163                                            fGrContext->createPlatformSurface(desc));
164        }
165    }
166
167    virtual GrContext* getGrContext() {
168        return fGrContext;
169    }
170private:
171    GrContext* fGrContext;
172    GrRenderTarget* fGrRenderTarget;
173};
174
175///////////////
176static const char view_inval_msg[] = "view-inval-msg";
177
178void SampleWindow::postInvalDelay() {
179    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
180}
181
182static bool isInvalEvent(const SkEvent& evt) {
183    return evt.isType(view_inval_msg);
184}
185//////////////////
186
187SkViewRegister* SkViewRegister::gHead;
188SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) {
189    static bool gOnce;
190    if (!gOnce) {
191        gHead = NULL;
192        gOnce = true;
193    }
194
195    fChain = gHead;
196    gHead = this;
197}
198
199#if 0
200#include <CoreFoundation/CoreFoundation.h>
201#include <CoreFoundation/CFURLAccess.h>
202
203static void testpdf() {
204    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
205                                                 kCFStringEncodingUTF8);
206    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
207                                              kCFURLPOSIXPathStyle,
208                                              false);
209    CFRelease(path);
210    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
211    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
212    CFRelease(url);
213
214    CGContextBeginPage(cg, &box);
215    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
216    CGContextFillEllipseInRect(cg, r);
217    CGContextEndPage(cg);
218    CGContextRelease(cg);
219
220    if (false) {
221        SkBitmap bm;
222        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
223        bm.allocPixels();
224        bm.eraseColor(0);
225
226        SkCanvas canvas(bm);
227
228    }
229}
230#endif
231
232//////////////////////////////////////////////////////////////////////////////
233
234enum FlipAxisEnum {
235    kFlipAxis_X = (1 << 0),
236    kFlipAxis_Y = (1 << 1)
237};
238
239#include "SkDrawFilter.h"
240
241class FlagsDrawFilter : public SkDrawFilter {
242public:
243    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
244                    SkOSMenu::TriState hinting) :
245        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
246
247    virtual void filter(SkPaint* paint, Type t) {
248        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
249            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
250        }
251        if (SkOSMenu::kMixedState != fAAState) {
252            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
253        }
254        if (SkOSMenu::kMixedState != fFilterState) {
255            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
256        }
257        if (SkOSMenu::kMixedState != fHintingState) {
258            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
259                              SkPaint::kNormal_Hinting :
260                              SkPaint::kSlight_Hinting);
261        }
262    }
263
264private:
265    SkOSMenu::TriState  fLCDState;
266    SkOSMenu::TriState  fAAState;
267    SkOSMenu::TriState  fFilterState;
268    SkOSMenu::TriState  fHintingState;
269};
270
271//////////////////////////////////////////////////////////////////////////////
272
273#define MAX_ZOOM_LEVEL  8
274#define MIN_ZOOM_LEVEL  -8
275
276static const char gCharEvtName[] = "SampleCode_Char_Event";
277static const char gKeyEvtName[] = "SampleCode_Key_Event";
278static const char gTitleEvtName[] = "SampleCode_Title_Event";
279static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
280static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
281
282bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
283    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
284        if (outUni) {
285            *outUni = evt.getFast32();
286        }
287        return true;
288    }
289    return false;
290}
291
292bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
293    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
294        if (outKey) {
295            *outKey = (SkKey)evt.getFast32();
296        }
297        return true;
298    }
299    return false;
300}
301
302bool SampleCode::TitleQ(const SkEvent& evt) {
303    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
304}
305
306void SampleCode::TitleR(SkEvent* evt, const char title[]) {
307    SkASSERT(evt && TitleQ(*evt));
308    evt->setString(gTitleEvtName, title);
309}
310
311bool SampleCode::RequestTitle(SkView* view, SkString* title) {
312    SkEvent evt(gTitleEvtName);
313    if (view->doQuery(&evt)) {
314        title->set(evt.findString(gTitleEvtName));
315        return true;
316    }
317    return false;
318}
319
320bool SampleCode::PrefSizeQ(const SkEvent& evt) {
321    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
322}
323
324void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
325    SkASSERT(evt && PrefSizeQ(*evt));
326    SkScalar size[2];
327    size[0] = width;
328    size[1] = height;
329    evt->setScalars(gPrefSizeEvtName, 2, size);
330}
331
332bool SampleCode::FastTextQ(const SkEvent& evt) {
333    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
334}
335
336///////////////////////////////////////////////////////////////////////////////
337
338static SkMSec gAnimTime;
339static SkMSec gAnimTimePrev;
340
341SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
342SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
343SkScalar SampleCode::GetAnimSecondsDelta() {
344    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
345}
346
347SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
348    // since gAnimTime can be up to 32 bits, we can't convert it to a float
349    // or we'll lose the low bits. Hence we use doubles for the intermediate
350    // calculations
351    double seconds = (double)gAnimTime / 1000.0;
352    double value = SkScalarToDouble(speed) * seconds;
353    if (period) {
354        value = ::fmod(value, SkScalarToDouble(period));
355    }
356    return SkDoubleToScalar(value);
357}
358
359GrContext* SampleCode::GetGr() {
360    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
361}
362
363//////////////////////////////////////////////////////////////////////////////
364
365static SkView* curr_view(SkWindow* wind) {
366    SkView::F2BIter iter(wind);
367    return iter.next();
368}
369
370void SampleWindow::setZoomCenter(float x, float y)
371{
372    fZoomCenterX = SkFloatToScalar(x);
373    fZoomCenterY = SkFloatToScalar(y);
374}
375
376bool SampleWindow::zoomIn()
377{
378    // Arbitrarily decided
379    if (fFatBitsScale == 25) return false;
380    fFatBitsScale++;
381    this->inval(NULL);
382    return true;
383}
384
385bool SampleWindow::zoomOut()
386{
387    if (fFatBitsScale == 1) return false;
388    fFatBitsScale--;
389    this->inval(NULL);
390    return true;
391}
392
393void SampleWindow::updatePointer(int x, int y)
394{
395    fMouseX = x;
396    fMouseY = y;
397    if (fShowZoomer) {
398        this->inval(NULL);
399    }
400}
401
402static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
403    static const SampleWindow::DeviceType gCT[] = {
404        SampleWindow::kPicture_DeviceType,
405        SampleWindow::kGPU_DeviceType,
406        SampleWindow::kRaster_DeviceType
407    };
408    return gCT[ct];
409}
410
411SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager) : INHERITED(hwnd) {
412    gSampleWindow = this;
413
414#ifdef  PIPE_FILE
415    //Clear existing file or create file if it doesn't exist
416    FILE* f = fopen(FILE_PATH, "wb");
417    fclose(f);
418#endif
419
420    fPicture = NULL;
421
422#ifdef DEFAULT_TO_GPU
423    fDeviceType = kGPU_DeviceType;
424#else
425    fDeviceType = kRaster_DeviceType;
426#endif
427    fUseClip = false;
428    fNClip = false;
429    fRepeatDrawing = false;
430    fAnimating = false;
431    fRotate = false;
432    fScale = false;
433    fRequestGrabImage = false;
434    fUsePipe = false;
435    fMeasureFPS = false;
436    fLCDState = SkOSMenu::kMixedState;
437    fAAState = SkOSMenu::kMixedState;
438    fFilterState = SkOSMenu::kMixedState;
439    fHintingState = SkOSMenu::kMixedState;
440    fFlipAxis = 0;
441    fScrollTestX = fScrollTestY = 0;
442
443    fMouseX = fMouseY = 0;
444    fFatBitsScale = 8;
445    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
446    fShowZoomer = false;
447
448    fZoomLevel = 0;
449    fZoomScale = SK_Scalar1;
450
451    fMagnify = false;
452    fDebugger = false;
453
454    fSaveToPdf = false;
455    fPdfCanvas = NULL;
456
457    fTransitionNext = 6;
458    fTransitionPrev = 2;
459
460    int sinkID = this->getSinkID();
461    fAppMenu.setTitle("Global Settings");
462    int itemID;
463
464    itemID =fAppMenu.appendList("Device Type", "Device Type", sinkID, 0,
465                                "Raster", "Picture", "OpenGL", NULL);
466    fAppMenu.assignKeyEquivalentToItem(itemID, 'd');
467    itemID = fAppMenu.appendTriState("AA", "AA", sinkID, fAAState);
468    fAppMenu.assignKeyEquivalentToItem(itemID, 'b');
469    itemID = fAppMenu.appendTriState("LCD", "LCD", sinkID, fLCDState);
470    fAppMenu.assignKeyEquivalentToItem(itemID, 'l');
471    itemID = fAppMenu.appendTriState("Filter", "Filter", sinkID, fFilterState);
472    fAppMenu.assignKeyEquivalentToItem(itemID, 'n');
473    itemID = fAppMenu.appendTriState("Hinting", "Hinting", sinkID, fHintingState);
474    fAppMenu.assignKeyEquivalentToItem(itemID, 'h');
475    fUsePipeMenuItemID = fAppMenu.appendSwitch("Pipe", "Pipe" , sinkID, fUsePipe);
476    fAppMenu.assignKeyEquivalentToItem(fUsePipeMenuItemID, 'p');
477#ifdef DEBUGGER
478    itemID = fAppMenu.appendSwitch("Debugger", "Debugger", sinkID, fDebugger);
479    fAppMenu.assignKeyEquivalentToItem(itemID, 'q');
480#endif
481    itemID = fAppMenu.appendSwitch("Slide Show", "Slide Show" , sinkID, false);
482    fAppMenu.assignKeyEquivalentToItem(itemID, 'a');
483    itemID = fAppMenu.appendSwitch("Clip", "Clip" , sinkID, fUseClip);
484    fAppMenu.assignKeyEquivalentToItem(itemID, 'c');
485    itemID = fAppMenu.appendSwitch("Flip X", "Flip X" , sinkID, false);
486    fAppMenu.assignKeyEquivalentToItem(itemID, 'x');
487    itemID = fAppMenu.appendSwitch("Flip Y", "Flip Y" , sinkID, false);
488    fAppMenu.assignKeyEquivalentToItem(itemID, 'y');
489    itemID = fAppMenu.appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
490    fAppMenu.assignKeyEquivalentToItem(itemID, 'z');
491    itemID = fAppMenu.appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
492    fAppMenu.assignKeyEquivalentToItem(itemID, 'm');
493    itemID =fAppMenu.appendList("Transition-Next", "Transition-Next", sinkID,
494                                fTransitionNext, "Up", "Up and Right", "Right",
495                                "Down and Right", "Down", "Down and Left",
496                                "Left", "Up and Left", NULL);
497    fAppMenu.assignKeyEquivalentToItem(itemID, 'j');
498    itemID =fAppMenu.appendList("Transition-Prev", "Transition-Prev", sinkID,
499                                fTransitionPrev, "Up", "Up and Right", "Right",
500                                "Down and Right", "Down", "Down and Left",
501                                "Left", "Up and Left", NULL);
502    fAppMenu.assignKeyEquivalentToItem(itemID, 'k');
503    itemID = fAppMenu.appendAction("Save to PDF", sinkID);
504    fAppMenu.assignKeyEquivalentToItem(itemID, 'e');
505
506    this->addMenu(&fAppMenu);
507    this->addMenu(&fSlideMenu);
508
509//    this->setConfig(SkBitmap::kRGB_565_Config);
510    this->setConfig(SkBitmap::kARGB_8888_Config);
511    this->setVisibleP(true);
512    this->setClipToBounds(false);
513
514    {
515        const SkViewRegister* reg = SkViewRegister::Head();
516        while (reg) {
517            *fSamples.append() = reg->factory();
518            reg = reg->next();
519        }
520    }
521    fCurrIndex = 0;
522    if (argc > 1) {
523        int i, count = fSamples.count();
524        for (i = 0; i < count; i++) {
525            SkString title = getSampleTitle(i);
526            if (title.equals(argv[1])) {
527                fCurrIndex = i;
528                break;
529            }
530        }
531        if (i == count) {
532            fprintf(stderr, "Unknown sample \"%s\"\n", argv[1]);
533        }
534    }
535    this->loadView(fSamples[fCurrIndex]());
536
537    fPDFData = NULL;
538
539    if (NULL == devManager) {
540        fDevManager = new DefaultDeviceManager();
541    } else {
542        devManager->ref();
543        fDevManager = devManager;
544    }
545    fDevManager->init(this);
546
547    // If another constructor set our dimensions, ensure that our
548    // onSizeChange gets called.
549    if (this->height() && this->width()) {
550        this->onSizeChange();
551    }
552}
553
554SampleWindow::~SampleWindow() {
555    delete fPicture;
556    delete fPdfCanvas;
557    fTypeface->unref();
558
559    SkSafeUnref(fDevManager);
560}
561
562static SkBitmap capture_bitmap(SkCanvas* canvas) {
563    SkBitmap bm;
564    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
565    src.copyTo(&bm, src.config());
566    return bm;
567}
568
569static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
570                        SkBitmap* diff) {
571    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
572
573    SkAutoLockPixels alp0(src);
574    SkAutoLockPixels alp1(orig);
575    for (int y = 0; y < src.height(); y++) {
576        const void* srcP = src.getAddr(0, y);
577        const void* origP = orig.getAddr(0, y);
578        size_t bytes = src.width() * src.bytesPerPixel();
579        if (memcmp(srcP, origP, bytes)) {
580            SkDebugf("---------- difference on line %d\n", y);
581            return true;
582        }
583    }
584    return false;
585}
586
587static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
588{
589    SkColor desiredColor = paint.getColor();
590    paint.setColor(SK_ColorWHITE);
591    const char* c_str = string.c_str();
592    size_t size = string.size();
593    SkRect bounds;
594    paint.measureText(c_str, size, &bounds);
595    bounds.offset(left, top);
596    SkScalar inset = SkIntToScalar(-2);
597    bounds.inset(inset, inset);
598    canvas->drawRect(bounds, paint);
599    if (desiredColor != SK_ColorBLACK) {
600        paint.setColor(SK_ColorBLACK);
601        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
602    }
603    paint.setColor(desiredColor);
604    canvas->drawText(c_str, size, left, top, paint);
605}
606
607#define XCLIP_N  8
608#define YCLIP_N  8
609
610void SampleWindow::draw(SkCanvas* canvas) {
611    if (!fDevManager->prepareCanvas(fDeviceType, canvas, this)) {
612        return;
613    }
614    // update the animation time
615    gAnimTimePrev = gAnimTime;
616    gAnimTime = SkTime::GetMSecs();
617
618    SkScalar cx = fZoomCenterX;
619    SkScalar cy = fZoomCenterY;
620
621    if (fZoomLevel) {
622        SkMatrix m;
623        SkPoint center;
624        m = canvas->getTotalMatrix();//.invert(&m);
625        m.mapXY(cx, cy, &center);
626        cx = center.fX;
627        cy = center.fY;
628
629        m.setTranslate(-cx, -cy);
630        m.postScale(fZoomScale, fZoomScale);
631        m.postTranslate(cx, cy);
632
633        canvas->concat(m);
634    }
635
636    if (fFlipAxis) {
637        SkMatrix m;
638        m.setTranslate(cx, cy);
639        if (fFlipAxis & kFlipAxis_X) {
640            m.preScale(-SK_Scalar1, SK_Scalar1);
641        }
642        if (fFlipAxis & kFlipAxis_Y) {
643            m.preScale(SK_Scalar1, -SK_Scalar1);
644        }
645        m.preTranslate(-cx, -cy);
646        canvas->concat(m);
647    }
648
649    // Apply any gesture matrix
650    if (true) {
651        const SkMatrix& localM = fGesture.localM();
652        if (localM.getType() & SkMatrix::kScale_Mask) {
653            canvas->setExternalMatrix(&localM);
654        }
655        canvas->concat(localM);
656        canvas->concat(fGesture.globalM());
657
658        if (fGesture.isActive()) {
659            this->inval(NULL);
660        }
661    }
662
663    if (fNClip) {
664        this->INHERITED::draw(canvas);
665        SkBitmap orig = capture_bitmap(canvas);
666
667        const SkScalar w = this->width();
668        const SkScalar h = this->height();
669        const SkScalar cw = w / XCLIP_N;
670        const SkScalar ch = h / YCLIP_N;
671        for (int y = 0; y < YCLIP_N; y++) {
672            SkRect r;
673            r.fTop = y * ch;
674            r.fBottom = (y + 1) * ch;
675            if (y == YCLIP_N - 1) {
676                r.fBottom = h;
677            }
678            for (int x = 0; x < XCLIP_N; x++) {
679                SkAutoCanvasRestore acr(canvas, true);
680                r.fLeft = x * cw;
681                r.fRight = (x + 1) * cw;
682                if (x == XCLIP_N - 1) {
683                    r.fRight = w;
684                }
685                canvas->clipRect(r);
686                this->INHERITED::draw(canvas);
687            }
688        }
689
690        SkBitmap diff;
691        if (bitmap_diff(canvas, orig, &diff)) {
692        }
693    } else {
694        this->INHERITED::draw(canvas);
695    }
696    if (fShowZoomer && !fSaveToPdf) {
697        showZoomer(canvas);
698    }
699    if (fMagnify && !fSaveToPdf) {
700        magnify(canvas);
701    }
702
703    // do this last
704    fDevManager->publishCanvas(fDeviceType, canvas, this);
705}
706
707static float clipW = 200;
708static float clipH = 200;
709void SampleWindow::magnify(SkCanvas* canvas) {
710    SkRect r;
711    int count = canvas->save();
712
713    SkMatrix m = canvas->getTotalMatrix();
714    m.invert(&m);
715    SkPoint offset, center;
716    m.mapXY(fMouseX - clipW/2, fMouseY - clipH/2, &offset);
717    m.mapXY(fMouseX, fMouseY, &center);
718
719    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
720    r.offset(offset.fX, offset.fY);
721
722    SkPaint paint;
723    paint.setColor(0xFF66AAEE);
724    paint.setStyle(SkPaint::kStroke_Style);
725    paint.setStrokeWidth(10.0 * m.getScaleX());
726    //lense offset
727    //canvas->translate(0, -250);
728    canvas->drawRect(r, paint);
729    canvas->clipRect(r);
730
731    m = canvas->getTotalMatrix();
732    m.setTranslate(-center.fX, -center.fY);
733    m.postScale(0.5 * fFatBitsScale, 0.5 * fFatBitsScale);
734    m.postTranslate(center.fX, center.fY);
735    canvas->concat(m);
736
737    this->INHERITED::draw(canvas);
738
739    canvas->restoreToCount(count);
740}
741
742void SampleWindow::showZoomer(SkCanvas* canvas) {
743        int count = canvas->save();
744        canvas->resetMatrix();
745        // Ensure the mouse position is on screen.
746        int width = SkScalarRound(this->width());
747        int height = SkScalarRound(this->height());
748        if (fMouseX >= width) fMouseX = width - 1;
749        else if (fMouseX < 0) fMouseX = 0;
750        if (fMouseY >= height) fMouseY = height - 1;
751        else if (fMouseY < 0) fMouseY = 0;
752
753        SkBitmap bitmap = capture_bitmap(canvas);
754        bitmap.lockPixels();
755
756        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
757        int zoomedWidth = (width >> 1) | 1;
758        int zoomedHeight = (height >> 1) | 1;
759        SkIRect src;
760        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
761        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
762        SkRect dest;
763        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
764        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
765        SkPaint paint;
766        // Clear the background behind our zoomed in view
767        paint.setColor(SK_ColorWHITE);
768        canvas->drawRect(dest, paint);
769        canvas->drawBitmapRect(bitmap, &src, dest);
770        paint.setColor(SK_ColorBLACK);
771        paint.setStyle(SkPaint::kStroke_Style);
772        // Draw a border around the pixel in the middle
773        SkRect originalPixel;
774        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
775        SkMatrix matrix;
776        SkRect scalarSrc;
777        scalarSrc.set(src);
778        SkColor color = bitmap.getColor(fMouseX, fMouseY);
779        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
780            SkRect pixel;
781            matrix.mapRect(&pixel, originalPixel);
782            // TODO Perhaps measure the values and make the outline white if it's "dark"
783            if (color == SK_ColorBLACK) {
784                paint.setColor(SK_ColorWHITE);
785            }
786            canvas->drawRect(pixel, paint);
787        }
788        paint.setColor(SK_ColorBLACK);
789        // Draw a border around the destination rectangle
790        canvas->drawRect(dest, paint);
791        paint.setStyle(SkPaint::kStrokeAndFill_Style);
792        // Identify the pixel and its color on screen
793        paint.setTypeface(fTypeface);
794        paint.setAntiAlias(true);
795        SkScalar lineHeight = paint.getFontMetrics(NULL);
796        SkString string;
797        string.appendf("(%i, %i)", fMouseX, fMouseY);
798        SkScalar left = dest.fLeft + SkIntToScalar(3);
799        SkScalar i = SK_Scalar1;
800        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
801        // Alpha
802        i += SK_Scalar1;
803        string.reset();
804        string.appendf("A: %X", SkColorGetA(color));
805        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
806        // Red
807        i += SK_Scalar1;
808        string.reset();
809        string.appendf("R: %X", SkColorGetR(color));
810        paint.setColor(SK_ColorRED);
811        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
812        // Green
813        i += SK_Scalar1;
814        string.reset();
815        string.appendf("G: %X", SkColorGetG(color));
816        paint.setColor(SK_ColorGREEN);
817        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
818        // Blue
819        i += SK_Scalar1;
820        string.reset();
821        string.appendf("B: %X", SkColorGetB(color));
822        paint.setColor(SK_ColorBLUE);
823        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
824        canvas->restoreToCount(count);
825}
826
827void SampleWindow::onDraw(SkCanvas* canvas) {
828    if (fRepeatDrawing) {
829        this->inval(NULL);
830    }
831}
832
833#include "SkColorPriv.h"
834
835static void reverseRedAndBlue(const SkBitmap& bm) {
836    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
837    uint8_t* p = (uint8_t*)bm.getPixels();
838    uint8_t* stop = p + bm.getSize();
839    while (p < stop) {
840        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
841        unsigned scale = SkAlpha255To256(p[3]);
842        unsigned r = p[2];
843        unsigned b = p[0];
844        p[0] = SkAlphaMul(r, scale);
845        p[1] = SkAlphaMul(p[1], scale);
846        p[2] = SkAlphaMul(b, scale);
847        p += 4;
848    }
849}
850
851void SampleWindow::saveToPdf()
852{
853    fSaveToPdf = true;
854    this->inval(NULL);
855}
856
857SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
858    if (fSaveToPdf) {
859        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
860        SkISize size = SkISize::Make(bmp.width(), bmp.height());
861        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
862                canvas->getTotalMatrix());
863        fPdfCanvas = new SkCanvas(pdfDevice);
864        pdfDevice->unref();
865        canvas = fPdfCanvas;
866    } else {
867        switch (fDeviceType) {
868            case kRaster_DeviceType:
869            case kGPU_DeviceType:
870                canvas = this->INHERITED::beforeChildren(canvas);
871                break;
872            case kPicture_DeviceType:
873                fPicture = new SkPicture;
874                canvas = fPicture->beginRecording(9999, 9999);
875                break;
876        }
877    }
878
879    if (fUseClip) {
880        canvas->drawColor(0xFFFF88FF);
881        canvas->clipPath(fClipPath);
882    }
883
884    return canvas;
885}
886
887static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
888                      const SkRegion& rgn) {
889    SkCanvas    canvas(bm);
890    SkRegion    inval(rgn);
891
892    inval.translate(r.fLeft, r.fTop);
893    canvas.clipRegion(inval);
894    canvas.drawColor(0xFFFF8080);
895}
896#include "SkData.h"
897void SampleWindow::afterChildren(SkCanvas* orig) {
898    if (fSaveToPdf) {
899        fSaveToPdf = false;
900        if (fShowZoomer) {
901            showZoomer(fPdfCanvas);
902        }
903        SkString name;
904        name.printf("%s.pdf", this->getTitle());
905        SkPDFDocument doc;
906        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
907        doc.appendPage(device);
908#ifdef ANDROID
909        name.prepend("/sdcard/");
910#endif
911
912#ifdef SK_BUILD_FOR_IOS
913        SkDynamicMemoryWStream mstream;
914        doc.emitPDF(&mstream);
915        fPDFData = mstream.copyToData();
916#endif
917        SkFILEWStream stream(name.c_str());
918        if (stream.isValid()) {
919            doc.emitPDF(&stream);
920            const char* desc = "File saved from Skia SampleApp";
921            this->onPDFSaved(this->getTitle(), desc, name.c_str());
922        }
923
924        delete fPdfCanvas;
925        fPdfCanvas = NULL;
926
927        // We took over the draw calls in order to create the PDF, so we need
928        // to redraw.
929        this->inval(NULL);
930        return;
931    }
932
933    if (fRequestGrabImage) {
934        fRequestGrabImage = false;
935
936        SkDevice* device = orig->getDevice();
937        SkBitmap bmp;
938        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
939            static int gSampleGrabCounter;
940            SkString name;
941            name.printf("sample_grab_%d", gSampleGrabCounter++);
942            SkImageEncoder::EncodeFile(name.c_str(), bmp,
943                                       SkImageEncoder::kPNG_Type, 100);
944        }
945    }
946
947    if (kPicture_DeviceType == fDeviceType) {
948        if (true) {
949            SkPicture* pict = new SkPicture(*fPicture);
950            fPicture->unref();
951            orig->drawPicture(*pict);
952            pict->unref();
953        } else if (true) {
954            SkDynamicMemoryWStream ostream;
955            fPicture->serialize(&ostream);
956            fPicture->unref();
957
958            SkAutoDataUnref data(ostream.copyToData());
959            SkMemoryStream istream(data.data(), data.size());
960            SkPicture pict(&istream);
961            orig->drawPicture(pict);
962        } else {
963            fPicture->draw(orig);
964            fPicture->unref();
965        }
966        fPicture = NULL;
967    }
968
969    // Do this after presentGL and other finishing, rather than in afterChild
970    if (fMeasureFPS && fMeasureFPS_Time) {
971        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
972        this->updateTitle();
973        this->postInvalDelay();
974    }
975
976    //    if ((fScrollTestX | fScrollTestY) != 0)
977    if (false) {
978        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
979        int dx = fScrollTestX * 7;
980        int dy = fScrollTestY * 7;
981        SkIRect r;
982        SkRegion inval;
983
984        r.set(50, 50, 50+100, 50+100);
985        bm.scrollRect(&r, dx, dy, &inval);
986        paint_rgn(bm, r, inval);
987    }
988#ifdef DEBUGGER
989    SkView* curr = curr_view(this);
990    if (fDebugger && !is_debugger(curr) && !is_transition(curr) && !is_overview(curr)) {
991        //Stop Pipe when fDebugger is active
992        fUsePipe = false;
993        (void)SampleView::SetUsePipe(curr, false);
994        fAppMenu.getItemByID(fUsePipeMenuItemID)->setBool(fUsePipe);
995        this->onUpdateMenu(&fAppMenu);
996
997        //Reset any transformations
998        fGesture.stop();
999        fGesture.reset();
1000
1001        this->loadView(create_debugger(gTempDataStore.begin(),
1002                                       gTempDataStore.count()));
1003    }
1004#endif
1005}
1006
1007void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1008    if (fScale) {
1009        SkScalar scale = SK_Scalar1 * 7 / 10;
1010        SkScalar cx = this->width() / 2;
1011        SkScalar cy = this->height() / 2;
1012        canvas->translate(cx, cy);
1013        canvas->scale(scale, scale);
1014        canvas->translate(-cx, -cy);
1015    }
1016    if (fRotate) {
1017        SkScalar cx = this->width() / 2;
1018        SkScalar cy = this->height() / 2;
1019        canvas->translate(cx, cy);
1020        canvas->rotate(SkIntToScalar(30));
1021        canvas->translate(-cx, -cy);
1022    }
1023
1024    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1025                                       fFilterState, fHintingState))->unref();
1026
1027    if (fMeasureFPS) {
1028        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
1029        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1030            fMeasureFPS_Time = SkTime::GetMSecs();
1031        }
1032    } else {
1033        (void)SampleView::SetRepeatDraw(child, 1);
1034    }
1035    //(void)SampleView::SetUsePipe(child, fUsePipe);
1036}
1037
1038void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1039    canvas->setDrawFilter(NULL);
1040}
1041
1042static SkBitmap::Config gConfigCycle[] = {
1043    SkBitmap::kNo_Config,           // none -> none
1044    SkBitmap::kNo_Config,           // a1 -> none
1045    SkBitmap::kNo_Config,           // a8 -> none
1046    SkBitmap::kNo_Config,           // index8 -> none
1047    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1048    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1049    SkBitmap::kRGB_565_Config       // 8888 -> 565
1050};
1051
1052static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1053    return gConfigCycle[c];
1054}
1055
1056void SampleWindow::changeZoomLevel(float delta) {
1057    fZoomLevel += SkFloatToScalar(delta);
1058    if (fZoomLevel > 0) {
1059        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1060        fZoomScale = fZoomLevel + SK_Scalar1;
1061    } else if (fZoomLevel < 0) {
1062        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1063        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1064    } else {
1065        fZoomScale = SK_Scalar1;
1066    }
1067
1068    this->updateTitle();
1069
1070    this->inval(NULL);
1071}
1072
1073bool SampleWindow::previousSample() {
1074    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1075    this->loadView(create_transition(curr_view(this), fSamples[fCurrIndex](),
1076                                     fTransitionPrev));
1077    return true;
1078}
1079
1080bool SampleWindow::nextSample() {
1081    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1082    this->loadView(create_transition(curr_view(this), fSamples[fCurrIndex](),
1083                                     fTransitionNext));
1084    return true;
1085}
1086
1087bool SampleWindow::goToSample(int i) {
1088    fCurrIndex = (i) % fSamples.count();
1089    this->loadView(create_transition(curr_view(this),fSamples[fCurrIndex](), 6));
1090    return true;
1091}
1092
1093SkString SampleWindow::getSampleTitle(int i) {
1094    SkView* view = fSamples[i]();
1095    SkString title;
1096    SampleCode::RequestTitle(view, &title);
1097    view->unref();
1098    return title;
1099}
1100
1101int SampleWindow::sampleCount() {
1102    return fSamples.count();
1103}
1104
1105void SampleWindow::showOverview() {
1106    this->loadView(create_transition(curr_view(this),
1107                                     create_overview(fSamples.count(), fSamples.begin()),
1108                                     4));
1109}
1110
1111void SampleWindow::postAnimatingEvent() {
1112    if (fAnimating) {
1113        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1114    }
1115}
1116bool SampleWindow::onEvent(const SkEvent& evt) {
1117    if (evt.isType(ANIMATING_EVENTTYPE)) {
1118        if (fAnimating) {
1119            this->nextSample();
1120            this->postAnimatingEvent();
1121        }
1122        return true;
1123    }
1124    if (evt.isType("replace-transition-view")) {
1125        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1126        return true;
1127    }
1128    if (evt.isType("set-curr-index")) {
1129        this->goToSample(evt.getFast32());
1130        return true;
1131    }
1132    if (isInvalEvent(evt)) {
1133        this->inval(NULL);
1134        return true;
1135    }
1136    int selected = -1;
1137    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1138        this->setDeviceType((DeviceType)selected);
1139        return true;
1140    }
1141    if (SkOSMenu::FindSwitchState(evt, "Pipe", &fUsePipe)) {
1142#ifdef PIPE_NET
1143        if (!fUsePipe)
1144            gServer.disconnectAll();
1145#endif
1146        (void)SampleView::SetUsePipe(curr_view(this), fUsePipe);
1147        this->updateTitle();
1148        this->inval(NULL);
1149        return true;
1150    }
1151    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1152        this->toggleSlideshow();
1153        return true;
1154    }
1155    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1156        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1157        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1158        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1159        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1160        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1161        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1162        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1163        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1164        this->inval(NULL);
1165        this->updateTitle();
1166        return true;
1167    }
1168    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1169        fFlipAxis ^= kFlipAxis_X;
1170        this->updateTitle();
1171        this->inval(NULL);
1172        return true;
1173    }
1174    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1175        fFlipAxis ^= kFlipAxis_Y;
1176        this->updateTitle();
1177        this->inval(NULL);
1178        return true;
1179    }
1180    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1181        this->saveToPdf();
1182        return true;
1183    }
1184#ifdef DEBUGGER
1185    if (SkOSMenu::FindSwitchState(evt, "Debugger", &fDebugger)) {
1186        if (fDebugger) {
1187            fUsePipe = true;
1188            (void)SampleView::SetUsePipe(curr_view(this), true);
1189        } else {
1190            this->loadView(fSamples[fCurrIndex]());
1191        }
1192        this->inval(NULL);
1193        return true;
1194    }
1195#endif
1196    return this->INHERITED::onEvent(evt);
1197}
1198
1199bool SampleWindow::onQuery(SkEvent* query) {
1200    if (query->isType("get-slide-count")) {
1201        query->setFast32(fSamples.count());
1202        return true;
1203    }
1204    if (query->isType("get-slide-title")) {
1205        SkView* view = fSamples[query->getFast32()]();
1206        SkEvent evt(gTitleEvtName);
1207        if (view->doQuery(&evt)) {
1208            query->setString("title", evt.findString(gTitleEvtName));
1209        }
1210        SkSafeUnref(view);
1211        return true;
1212    }
1213    if (query->isType("use-fast-text")) {
1214        SkEvent evt(gFastTextEvtName);
1215        return curr_view(this)->doQuery(&evt);
1216    }
1217    if (query->isType("ignore-window-bitmap")) {
1218        query->setFast32(this->getGrContext() != NULL);
1219        return true;
1220    }
1221    return this->INHERITED::onQuery(query);
1222}
1223
1224static void cleanup_for_filename(SkString* name) {
1225    char* str = name->writable_str();
1226    for (size_t i = 0; i < name->size(); i++) {
1227        switch (str[i]) {
1228            case ':': str[i] = '-'; break;
1229            case '/': str[i] = '-'; break;
1230            case ' ': str[i] = '_'; break;
1231            default: break;
1232        }
1233    }
1234}
1235
1236bool SampleWindow::onHandleChar(SkUnichar uni) {
1237    {
1238        SkView* view = curr_view(this);
1239        if (view) {
1240            SkEvent evt(gCharEvtName);
1241            evt.setFast32(uni);
1242            if (view->doQuery(&evt)) {
1243                return true;
1244            }
1245        }
1246    }
1247
1248    int dx = 0xFF;
1249    int dy = 0xFF;
1250
1251    switch (uni) {
1252        case '5': dx =  0; dy =  0; break;
1253        case '8': dx =  0; dy = -1; break;
1254        case '6': dx =  1; dy =  0; break;
1255        case '2': dx =  0; dy =  1; break;
1256        case '4': dx = -1; dy =  0; break;
1257        case '7': dx = -1; dy = -1; break;
1258        case '9': dx =  1; dy = -1; break;
1259        case '3': dx =  1; dy =  1; break;
1260        case '1': dx = -1; dy =  1; break;
1261
1262        default:
1263            break;
1264    }
1265
1266    if (0xFF != dx && 0xFF != dy) {
1267        if ((dx | dy) == 0) {
1268            fScrollTestX = fScrollTestY = 0;
1269        } else {
1270            fScrollTestX += dx;
1271            fScrollTestY += dy;
1272        }
1273        this->inval(NULL);
1274        return true;
1275    }
1276
1277    switch (uni) {
1278        case 'd':
1279            SkGraphics::SetFontCacheUsed(0);
1280            return true;
1281        case 'f':
1282            // only
1283            fMeasureFPS = !fMeasureFPS;
1284            this->updateTitle();
1285            this->inval(NULL);
1286            break;
1287        case 'g':
1288            fRequestGrabImage = true;
1289            this->inval(NULL);
1290            break;
1291        case 'i':
1292            this->zoomIn();
1293            break;
1294        case 'o':
1295            this->zoomOut();
1296            break;
1297        case 'r':
1298            fRotate = !fRotate;
1299            this->inval(NULL);
1300            this->updateTitle();
1301            return true;
1302        case 's':
1303            fScale = !fScale;
1304            this->inval(NULL);
1305            this->updateTitle();
1306            return true;
1307        default:
1308            break;
1309    }
1310
1311    if (fAppMenu.handleKeyEquivalent(uni)|| fSlideMenu.handleKeyEquivalent(uni)) {
1312        this->onUpdateMenu(&fAppMenu);
1313        this->onUpdateMenu(&fSlideMenu);
1314        return true;
1315    }
1316    return this->INHERITED::onHandleChar(uni);
1317}
1318
1319void SampleWindow::setDeviceType(DeviceType type) {
1320    if (type != fDeviceType && fDevManager->supportsDeviceType(fDeviceType))
1321        fDeviceType = type;
1322    this->updateTitle();
1323    this->inval(NULL);
1324}
1325
1326void SampleWindow::toggleSlideshow() {
1327    fAnimating = !fAnimating;
1328    this->postAnimatingEvent();
1329    this->updateTitle();
1330}
1331
1332void SampleWindow::toggleRendering() {
1333    DeviceType origDevType = fDeviceType;
1334    do {
1335        fDeviceType = cycle_devicetype(fDeviceType);
1336    } while (origDevType != fDeviceType &&
1337             !fDevManager->supportsDeviceType(fDeviceType));
1338    this->updateTitle();
1339    this->inval(NULL);
1340}
1341
1342#include "SkDumpCanvas.h"
1343
1344bool SampleWindow::onHandleKey(SkKey key) {
1345    {
1346        SkView* view = curr_view(this);
1347        if (view) {
1348            SkEvent evt(gKeyEvtName);
1349            evt.setFast32(key);
1350            if (view->doQuery(&evt)) {
1351                return true;
1352            }
1353        }
1354    }
1355    switch (key) {
1356        case kRight_SkKey:
1357            if (this->nextSample()) {
1358                return true;
1359            }
1360            break;
1361        case kLeft_SkKey:
1362            toggleRendering();
1363            return true;
1364        case kUp_SkKey:
1365            if (USE_ARROWS_FOR_ZOOM) {
1366                this->changeZoomLevel(1.f);
1367            } else {
1368                fNClip = !fNClip;
1369                this->inval(NULL);
1370                this->updateTitle();
1371            }
1372            return true;
1373        case kDown_SkKey:
1374            if (USE_ARROWS_FOR_ZOOM) {
1375                this->changeZoomLevel(-1.f);
1376            } else {
1377                this->setConfig(cycle_configs(this->getBitmap().config()));
1378                this->updateTitle();
1379            }
1380            return true;
1381        case kOK_SkKey:
1382            if (false) {
1383                SkDebugfDumper dumper;
1384                SkDumpCanvas dc(&dumper);
1385                this->draw(&dc);
1386            } else {
1387                fRepeatDrawing = !fRepeatDrawing;
1388                if (fRepeatDrawing) {
1389                    this->inval(NULL);
1390                }
1391            }
1392            return true;
1393        case kBack_SkKey:
1394            this->showOverview();
1395            return true;
1396        default:
1397            break;
1398    }
1399    return this->INHERITED::onHandleKey(key);
1400}
1401
1402///////////////////////////////////////////////////////////////////////////////
1403
1404static const char gGestureClickType[] = "GestureClickType";
1405
1406bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1407        void* owner) {
1408    if (Click::kMoved_State == state) {
1409        updatePointer(x, y);
1410    }
1411    int w = SkScalarRound(this->width());
1412    int h = SkScalarRound(this->height());
1413
1414    // check for the resize-box
1415    if (w - x < 16 && h - y < 16) {
1416        return false;   // let the OS handle the click
1417    }
1418    else if (fMagnify) {
1419        //it's only necessary to update the drawing if there's a click
1420        this->inval(NULL);
1421        return false; //prevent dragging while magnify is enabled
1422    }
1423    else {
1424        return this->INHERITED::onDispatchClick(x, y, state, owner);
1425    }
1426}
1427
1428class GestureClick : public SkView::Click {
1429public:
1430    GestureClick(SkView* target) : SkView::Click(target) {
1431        this->setType(gGestureClickType);
1432    }
1433
1434    static bool IsGesture(Click* click) {
1435        return click->isType(gGestureClickType);
1436    }
1437};
1438
1439SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1440    return new GestureClick(this);
1441}
1442
1443bool SampleWindow::onClick(Click* click) {
1444    if (GestureClick::IsGesture(click)) {
1445        float x = SkScalarToFloat(click->fCurr.fX);
1446        float y = SkScalarToFloat(click->fCurr.fY);
1447
1448        switch (click->fState) {
1449            case SkView::Click::kDown_State:
1450                fGesture.touchBegin(click->fOwner, x, y);
1451                break;
1452            case SkView::Click::kMoved_State:
1453                fGesture.touchMoved(click->fOwner, x, y);
1454                this->inval(NULL);
1455                break;
1456            case SkView::Click::kUp_State:
1457                fGesture.touchEnd(click->fOwner);
1458                this->inval(NULL);
1459                break;
1460        }
1461        return true;
1462    }
1463    return false;
1464}
1465
1466///////////////////////////////////////////////////////////////////////////////
1467
1468void SampleWindow::loadView(SkView* view) {
1469    SkView::F2BIter iter(this);
1470    SkView* prev = iter.next();
1471    if (prev) {
1472        prev->detachFromParent();
1473    }
1474
1475    view->setVisibleP(true);
1476    view->setClipToBounds(false);
1477    this->attachChildToFront(view)->unref();
1478    view->setSize(this->width(), this->height());
1479
1480    //repopulate the slide menu when a view is loaded
1481    fSlideMenu.reset();
1482#ifdef DEBUGGER
1483    if (!is_debugger(view) && !is_overview(view) && !is_transition(view) && fDebugger) {
1484        //Force Pipe to be on if using debugger
1485        fUsePipe = true;
1486    }
1487#endif
1488    (void)SampleView::SetUsePipe(view, fUsePipe);
1489    if (SampleView::IsSampleView(view))
1490        ((SampleView*)view)->requestMenu(&fSlideMenu);
1491    this->onUpdateMenu(&fSlideMenu);
1492    this->updateTitle();
1493}
1494
1495static const char* gConfigNames[] = {
1496    "unknown config",
1497    "A1",
1498    "A8",
1499    "Index8",
1500    "565",
1501    "4444",
1502    "8888"
1503};
1504
1505static const char* configToString(SkBitmap::Config c) {
1506    return gConfigNames[c];
1507}
1508
1509static const char* gDeviceTypePrefix[] = {
1510    "raster: ",
1511    "picture: ",
1512    "opengl: "
1513};
1514
1515static const char* trystate_str(SkOSMenu::TriState state,
1516                                const char trueStr[], const char falseStr[]) {
1517    if (SkOSMenu::kOnState == state) {
1518        return trueStr;
1519    } else if (SkOSMenu::kOffState == state) {
1520        return falseStr;
1521    }
1522    return NULL;
1523}
1524
1525void SampleWindow::updateTitle() {
1526    SkString title;
1527
1528    SkView::F2BIter iter(this);
1529    SkView* view = iter.next();
1530    SkEvent evt(gTitleEvtName);
1531    if (view->doQuery(&evt)) {
1532        title.set(evt.findString(gTitleEvtName));
1533    }
1534    if (title.size() == 0) {
1535        title.set("<unknown>");
1536    }
1537
1538    title.prepend(gDeviceTypePrefix[fDeviceType]);
1539
1540    title.prepend(" ");
1541    title.prepend(configToString(this->getBitmap().config()));
1542
1543    if (fAnimating) {
1544        title.prepend("<A> ");
1545    }
1546    if (fScale) {
1547        title.prepend("<S> ");
1548    }
1549    if (fRotate) {
1550        title.prepend("<R> ");
1551    }
1552    if (fNClip) {
1553        title.prepend("<C> ");
1554    }
1555
1556    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
1557    title.prepend(trystate_str(fAAState, "AA ", "aa "));
1558    title.prepend(trystate_str(fFilterState, "H ", "h "));
1559    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
1560    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
1561
1562    if (fZoomLevel) {
1563        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
1564    }
1565
1566    if (fMeasureFPS) {
1567        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
1568    }
1569    if (fUsePipe && SampleView::IsSampleView(view)) {
1570        title.prepend("<P> ");
1571    }
1572    if (SampleView::IsSampleView(view)) {
1573        title.prepend("! ");
1574    }
1575
1576    this->setTitle(title.c_str());
1577}
1578
1579void SampleWindow::onSizeChange() {
1580    this->INHERITED::onSizeChange();
1581
1582    SkView::F2BIter iter(this);
1583    SkView* view = iter.next();
1584    view->setSize(this->width(), this->height());
1585
1586    // rebuild our clippath
1587    {
1588        const SkScalar W = this->width();
1589        const SkScalar H = this->height();
1590
1591        fClipPath.reset();
1592#if 0
1593        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
1594            SkRect r;
1595            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
1596            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
1597                fClipPath.addRect(r);
1598        }
1599#else
1600        SkRect r;
1601        r.set(0, 0, W, H);
1602        fClipPath.addRect(r, SkPath::kCCW_Direction);
1603        r.set(W/4, H/4, W*3/4, H*3/4);
1604        fClipPath.addRect(r, SkPath::kCW_Direction);
1605#endif
1606    }
1607
1608    fZoomCenterX = SkScalarHalf(this->width());
1609    fZoomCenterY = SkScalarHalf(this->height());
1610
1611#ifdef ANDROID
1612    // FIXME: The first draw after a size change does not work on Android, so
1613    // we post an invalidate.
1614    this->postInvalDelay();
1615#endif
1616    this->updateTitle();    // to refresh our config
1617    fDevManager->windowSizeChanged(this);
1618}
1619
1620///////////////////////////////////////////////////////////////////////////////
1621
1622static const char is_sample_view_tag[] = "sample-is-sample-view";
1623static const char repeat_count_tag[] = "sample-set-repeat-count";
1624static const char set_use_pipe_tag[] = "sample-set-use-pipe";
1625
1626bool SampleView::IsSampleView(SkView* view) {
1627    SkEvent evt(is_sample_view_tag);
1628    return view->doQuery(&evt);
1629}
1630
1631bool SampleView::SetRepeatDraw(SkView* view, int count) {
1632    SkEvent evt(repeat_count_tag);
1633    evt.setFast32(count);
1634    return view->doEvent(evt);
1635}
1636
1637bool SampleView::SetUsePipe(SkView* view, bool pred) {
1638    SkEvent evt(set_use_pipe_tag);
1639    evt.setFast32(pred);
1640    return view->doEvent(evt);
1641}
1642
1643bool SampleView::onEvent(const SkEvent& evt) {
1644    if (evt.isType(repeat_count_tag)) {
1645        fRepeatCount = evt.getFast32();
1646        return true;
1647    }
1648    if (evt.isType(set_use_pipe_tag)) {
1649        fUsePipe = !!evt.getFast32();
1650        return true;
1651    }
1652    return this->INHERITED::onEvent(evt);
1653}
1654
1655bool SampleView::onQuery(SkEvent* evt) {
1656    if (evt->isType(is_sample_view_tag)) {
1657        return true;
1658    }
1659    return this->INHERITED::onQuery(evt);
1660}
1661
1662#ifdef TEST_GPIPE
1663    #include "SkGPipe.h"
1664
1665class SimplePC : public SkGPipeController {
1666public:
1667    SimplePC(SkCanvas* target);
1668    ~SimplePC();
1669
1670    /**
1671     * User this method to halt/restart pipe
1672     */
1673    void setWriteToPipe(bool writeToPipe) { fWriteToPipe = writeToPipe; }
1674    virtual void* requestBlock(size_t minRequest, size_t* actual);
1675    virtual void notifyWritten(size_t bytes);
1676
1677private:
1678    SkGPipeReader   fReader;
1679    void*           fBlock;
1680    size_t          fBlockSize;
1681    size_t          fBytesWritten;
1682    int             fAtomsWritten;
1683    SkGPipeReader::Status   fStatus;
1684    bool            fWriteToPipe;
1685
1686    size_t        fTotalWritten;
1687};
1688
1689SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
1690    fBlock = NULL;
1691    fBlockSize = fBytesWritten = 0;
1692    fStatus = SkGPipeReader::kDone_Status;
1693    fTotalWritten = 0;
1694    fAtomsWritten = 0;
1695    fWriteToPipe = true;
1696}
1697
1698SimplePC::~SimplePC() {
1699//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
1700    if (fTotalWritten) {
1701        if (fWriteToPipe) {
1702            SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
1703                     fAtomsWritten, fStatus);
1704#ifdef  PIPE_FILE
1705            //File is open in append mode
1706            FILE* f = fopen(FILE_PATH, "ab");
1707            SkASSERT(f != NULL);
1708            fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
1709            fclose(f);
1710#endif
1711#ifdef PIPE_NET
1712            if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
1713                gServer.acceptConnections();
1714                gServer.writePacket(fBlock, fTotalWritten);
1715            }
1716#endif
1717#ifdef  DEBUGGER
1718            gTempDataStore.reset();
1719            gTempDataStore.append(fTotalWritten, (const char*)fBlock);
1720#endif
1721        }
1722    }
1723    sk_free(fBlock);
1724}
1725
1726void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
1727    sk_free(fBlock);
1728
1729    fBlockSize = minRequest * 4;
1730    fBlock = sk_malloc_throw(fBlockSize);
1731    fBytesWritten = 0;
1732    *actual = fBlockSize;
1733    return fBlock;
1734}
1735
1736void SimplePC::notifyWritten(size_t bytes) {
1737    SkASSERT(fBytesWritten + bytes <= fBlockSize);
1738    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
1739    SkASSERT(SkGPipeReader::kError_Status != fStatus);
1740    fBytesWritten += bytes;
1741    fTotalWritten += bytes;
1742
1743    fAtomsWritten += 1;
1744}
1745
1746#endif
1747
1748void SampleView::draw(SkCanvas* canvas) {
1749#ifdef TEST_GPIPE
1750    if (fUsePipe) {
1751        SkGPipeWriter writer;
1752        SimplePC controller(canvas);
1753        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
1754        canvas = writer.startRecording(&controller, flags);
1755        //Must draw before controller goes out of scope and sends data
1756        this->INHERITED::draw(canvas);
1757        //explicitly end recording to ensure writer is flushed before the memory
1758        //is freed in the deconstructor of the controller
1759        writer.endRecording();
1760        controller.setWriteToPipe(fUsePipe);
1761    }
1762    else
1763        this->INHERITED::draw(canvas);
1764#else
1765    this->INHERITED::draw(canvas);
1766#endif
1767}
1768void SampleView::onDraw(SkCanvas* canvas) {
1769    this->onDrawBackground(canvas);
1770
1771    for (int i = 0; i < fRepeatCount; i++) {
1772        SkAutoCanvasRestore acr(canvas, true);
1773        this->onDrawContent(canvas);
1774    }
1775}
1776
1777void SampleView::onDrawBackground(SkCanvas* canvas) {
1778    canvas->drawColor(fBGColor);
1779}
1780
1781///////////////////////////////////////////////////////////////////////////////
1782
1783template <typename T> void SkTBSort(T array[], int count) {
1784    for (int i = 1; i < count - 1; i++) {
1785        bool didSwap = false;
1786        for (int j = count - 1; j > i; --j) {
1787            if (array[j] < array[j-1]) {
1788                T tmp(array[j-1]);
1789                array[j-1] = array[j];
1790                array[j] = tmp;
1791                didSwap = true;
1792            }
1793        }
1794        if (!didSwap) {
1795            break;
1796        }
1797    }
1798
1799    for (int k = 0; k < count - 1; k++) {
1800        SkASSERT(!(array[k+1] < array[k]));
1801    }
1802}
1803
1804#include "SkRandom.h"
1805
1806static void rand_rect(SkIRect* rect, SkRandom& rand) {
1807    int bits = 8;
1808    int shift = 32 - bits;
1809    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
1810              rand.nextU() >> shift, rand.nextU() >> shift);
1811    rect->sort();
1812}
1813
1814static void dumpRect(const SkIRect& r) {
1815    SkDebugf(" { %d, %d, %d, %d },\n",
1816             r.fLeft, r.fTop,
1817             r.fRight, r.fBottom);
1818}
1819
1820static void test_rects(const SkIRect rect[], int count) {
1821    SkRegion rgn0, rgn1;
1822
1823    for (int i = 0; i < count; i++) {
1824        rgn0.op(rect[i], SkRegion::kUnion_Op);
1825     //   dumpRect(rect[i]);
1826    }
1827    rgn1.setRects(rect, count);
1828
1829    if (rgn0 != rgn1) {
1830        SkDebugf("\n");
1831        for (int i = 0; i < count; i++) {
1832            dumpRect(rect[i]);
1833        }
1834        SkDebugf("\n");
1835    }
1836}
1837
1838static void test() {
1839    size_t i;
1840
1841    const SkIRect r0[] = {
1842        { 0, 0, 1, 1 },
1843        { 2, 2, 3, 3 },
1844    };
1845    const SkIRect r1[] = {
1846        { 0, 0, 1, 3 },
1847        { 1, 1, 2, 2 },
1848        { 2, 0, 3, 3 },
1849    };
1850    const SkIRect r2[] = {
1851        { 0, 0, 1, 2 },
1852        { 2, 1, 3, 3 },
1853        { 4, 0, 5, 1 },
1854        { 6, 0, 7, 4 },
1855    };
1856
1857    static const struct {
1858        const SkIRect* fRects;
1859        int            fCount;
1860    } gRecs[] = {
1861        { r0, SK_ARRAY_COUNT(r0) },
1862        { r1, SK_ARRAY_COUNT(r1) },
1863        { r2, SK_ARRAY_COUNT(r2) },
1864    };
1865
1866    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
1867        test_rects(gRecs[i].fRects, gRecs[i].fCount);
1868    }
1869
1870    SkRandom rand;
1871    for (i = 0; i < 10000; i++) {
1872        SkRegion rgn0, rgn1;
1873
1874        const int N = 8;
1875        SkIRect rect[N];
1876        for (int j = 0; j < N; j++) {
1877            rand_rect(&rect[j], rand);
1878        }
1879        test_rects(rect, N);
1880    }
1881}
1882
1883SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
1884//    test();
1885    return new SampleWindow(hwnd, argc, argv, NULL);
1886}
1887
1888void get_preferred_size(int* x, int* y, int* width, int* height) {
1889    *x = 10;
1890    *y = 50;
1891    *width = 640;
1892    *height = 480;
1893}
1894
1895void application_init() {
1896//    setenv("ANDROID_ROOT", "../../../data", 0);
1897#ifdef SK_BUILD_FOR_MAC
1898    setenv("ANDROID_ROOT", "/android/device/data", 0);
1899#endif
1900    SkGraphics::Init();
1901    SkEvent::Init();
1902}
1903
1904void application_term() {
1905    SkEvent::Term();
1906    SkGraphics::Term();
1907}
1908