SampleApp.cpp revision e32b5837c3f35b80502759f3de3e8cadf6625f4e 
1#include "SkCanvas.h"
2#include "SkDevice.h"
3#include "SkGpuCanvas.h"
4#include "SkGraphics.h"
5#include "SkImageEncoder.h"
6#include "SkPaint.h"
7#include "SkPicture.h"
8#include "SkStream.h"
9#include "SkTime.h"
10#include "SkWindow.h"
11
12#include "SampleCode.h"
13#include "GrContext.h"
14#include "SkTouchGesture.h"
15#include "SkTypeface.h"
16
17#define TEST_GPIPEx
18
19#ifdef  TEST_GPIPE
20#define PIPE_FILE
21#define FILE_PATH "/path/to/drawing.data"
22#endif
23
24#define USE_ARROWS_FOR_ZOOM true
25//#define DEFAULT_TO_GPU
26
27extern SkView* create_overview(int, const SkViewFactory[]);
28
29#define SK_SUPPORT_GL
30
31#define ANIMATING_EVENTTYPE "nextSample"
32#define ANIMATING_DELAY     750
33
34#ifdef SK_DEBUG
35    #define FPS_REPEAT_MULTIPLIER   1
36#else
37    #define FPS_REPEAT_MULTIPLIER   10
38#endif
39#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
40
41#ifdef SK_SUPPORT_GL
42    #include "GrGLConfig.h"
43#endif
44
45///////////////
46static const char view_inval_msg[] = "view-inval-msg";
47
48static void postInvalDelay(SkEventSinkID sinkID) {
49    SkEvent* evt = new SkEvent(view_inval_msg);
50    evt->post(sinkID, 1);
51}
52
53static bool isInvalEvent(const SkEvent& evt) {
54    return evt.isType(view_inval_msg);
55}
56//////////////////
57
58SkViewRegister* SkViewRegister::gHead;
59SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) {
60    static bool gOnce;
61    if (!gOnce) {
62        gHead = NULL;
63        gOnce = true;
64    }
65
66    fChain = gHead;
67    gHead = this;
68}
69
70#if defined(SK_SUPPORT_GL)
71    #define SK_USE_SHADERS
72#endif
73
74#ifdef SK_BUILD_FOR_MAC
75#include <CoreFoundation/CoreFoundation.h>
76#include <CoreFoundation/CFURLAccess.h>
77
78static void testpdf() {
79    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
80                                                 kCFStringEncodingUTF8);
81    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
82                                              kCFURLPOSIXPathStyle,
83                                              false);
84    CFRelease(path);
85    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
86    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
87    CFRelease(url);
88
89    CGContextBeginPage(cg, &box);
90    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
91    CGContextFillEllipseInRect(cg, r);
92    CGContextEndPage(cg);
93    CGContextRelease(cg);
94
95    if (false) {
96        SkBitmap bm;
97        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
98        bm.allocPixels();
99        bm.eraseColor(0);
100
101        SkCanvas canvas(bm);
102
103    }
104}
105#endif
106
107//////////////////////////////////////////////////////////////////////////////
108
109enum FlipAxisEnum {
110    kFlipAxis_X = (1 << 0),
111    kFlipAxis_Y = (1 << 1)
112};
113
114enum SkTriState {
115    kFalse_SkTriState,
116    kTrue_SkTriState,
117    kUnknown_SkTriState,
118};
119
120static SkTriState cycle_tristate(SkTriState state) {
121    static const SkTriState gCycle[] = {
122        /* kFalse_SkTriState   -> */  kUnknown_SkTriState,
123        /* kTrue_SkTriState    -> */  kFalse_SkTriState,
124        /* kUnknown_SkTriState -> */  kTrue_SkTriState,
125    };
126    return gCycle[state];
127}
128
129#include "SkDrawFilter.h"
130
131class FlagsDrawFilter : public SkDrawFilter {
132public:
133    FlagsDrawFilter(SkTriState lcd, SkTriState aa, SkTriState filter,
134                    SkTriState hinting) :
135        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
136
137    virtual void filter(SkPaint* paint, Type t) {
138        if (kText_Type == t && kUnknown_SkTriState != fLCDState) {
139            paint->setLCDRenderText(kTrue_SkTriState == fLCDState);
140        }
141        if (kUnknown_SkTriState != fAAState) {
142            paint->setAntiAlias(kTrue_SkTriState == fAAState);
143        }
144        if (kUnknown_SkTriState != fFilterState) {
145            paint->setFilterBitmap(kTrue_SkTriState == fFilterState);
146        }
147        if (kUnknown_SkTriState != fHintingState) {
148            paint->setHinting(kTrue_SkTriState == fHintingState ?
149                              SkPaint::kNormal_Hinting :
150                              SkPaint::kSlight_Hinting);
151        }
152    }
153
154private:
155    SkTriState  fLCDState;
156    SkTriState  fAAState;
157    SkTriState  fFilterState;
158    SkTriState  fHintingState;
159};
160
161//////////////////////////////////////////////////////////////////////////////
162
163#define MAX_ZOOM_LEVEL  8
164#define MIN_ZOOM_LEVEL  -8
165
166static const char gCharEvtName[] = "SampleCode_Char_Event";
167static const char gKeyEvtName[] = "SampleCode_Key_Event";
168static const char gTitleEvtName[] = "SampleCode_Title_Event";
169static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
170static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
171
172bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
173    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
174        if (outUni) {
175            *outUni = evt.getFast32();
176        }
177        return true;
178    }
179    return false;
180}
181
182bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
183    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
184        if (outKey) {
185            *outKey = (SkKey)evt.getFast32();
186        }
187        return true;
188    }
189    return false;
190}
191
192bool SampleCode::TitleQ(const SkEvent& evt) {
193    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
194}
195
196void SampleCode::TitleR(SkEvent* evt, const char title[]) {
197    SkASSERT(evt && TitleQ(*evt));
198    evt->setString(gTitleEvtName, title);
199}
200
201bool SampleCode::PrefSizeQ(const SkEvent& evt) {
202    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
203}
204
205void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
206    SkASSERT(evt && PrefSizeQ(*evt));
207    SkScalar size[2];
208    size[0] = width;
209    size[1] = height;
210    evt->setScalars(gPrefSizeEvtName, 2, size);
211}
212
213bool SampleCode::FastTextQ(const SkEvent& evt) {
214    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
215}
216
217///////////////////////////////////////////////////////////////////////////////
218
219static SkMSec gAnimTime;
220static SkMSec gAnimTimePrev;
221
222SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
223SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
224SkScalar SampleCode::GetAnimSecondsDelta() {
225    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
226}
227
228SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
229    // since gAnimTime can be up to 32 bits, we can't convert it to a float
230    // or we'll lose the low bits. Hence we use doubles for the intermediate
231    // calculations
232    double seconds = (double)gAnimTime / 1000.0;
233    double value = SkScalarToDouble(speed) * seconds;
234    if (period) {
235        value = ::fmod(value, SkScalarToDouble(period));
236    }
237    return SkDoubleToScalar(value);
238}
239
240//////////////////////////////////////////////////////////////////////////////
241
242static SkView* curr_view(SkWindow* wind) {
243    SkView::F2BIter iter(wind);
244    return iter.next();
245}
246
247class SampleWindow : public SkOSWindow {
248    SkTDArray<SkViewFactory> fSamples;
249public:
250    SampleWindow(void* hwnd);
251    virtual ~SampleWindow();
252
253    virtual void draw(SkCanvas* canvas);
254#ifdef ANDROID
255    virtual bool drawsToHardware() { return fCanvasType == kGPU_CanvasType; }
256    virtual bool setGrContext(GrContext*);
257    virtual GrContext* getGrContext();
258#endif
259
260protected:
261    virtual void onDraw(SkCanvas* canvas);
262    virtual bool onHandleKey(SkKey key);
263    virtual bool onHandleChar(SkUnichar);
264    virtual void onSizeChange();
265
266    virtual SkCanvas* beforeChildren(SkCanvas*);
267    virtual void afterChildren(SkCanvas*);
268    virtual void beforeChild(SkView* child, SkCanvas* canvas);
269    virtual void afterChild(SkView* child, SkCanvas* canvas);
270
271    virtual bool onEvent(const SkEvent& evt);
272    virtual bool onQuery(SkEvent* evt);
273
274    virtual bool onDispatchClick(int x, int y, Click::State);
275    virtual bool onClick(Click* click);
276    virtual Click* onFindClickHandler(SkScalar x, SkScalar y);
277
278#if 0
279    virtual bool handleChar(SkUnichar uni);
280    virtual bool handleEvent(const SkEvent& evt);
281    virtual bool handleKey(SkKey key);
282    virtual bool handleKeyUp(SkKey key);
283    virtual bool onHandleKeyUp(SkKey key);
284#endif
285
286private:
287    int fCurrIndex;
288
289    SkPicture* fPicture;
290    SkGpuCanvas* fGpuCanvas;
291    GrContext* fGrContext;
292    SkPath fClipPath;
293
294    SkTouchGesture fGesture;
295    SkScalar fZoomLevel;
296    SkScalar fZoomScale;
297
298    enum CanvasType {
299        kRaster_CanvasType,
300        kPicture_CanvasType,
301        kGPU_CanvasType
302    };
303    CanvasType fCanvasType;
304
305    bool fUseClip;
306    bool fNClip;
307    bool fRepeatDrawing;
308    bool fAnimating;
309    bool fRotate;
310    bool fScale;
311    bool fRequestGrabImage;
312    bool fUsePipe;
313    bool fMeasureFPS;
314    SkMSec fMeasureFPS_Time;
315
316    // The following are for the 'fatbits' drawing
317    // Latest position of the mouse.
318    int fMouseX, fMouseY;
319    int fFatBitsScale;
320    // Used by the text showing position and color values.
321    SkTypeface* fTypeface;
322    bool fShowZoomer;
323
324    SkTriState fLCDState;
325    SkTriState fAAState;
326    SkTriState fFilterState;
327    SkTriState fHintingState;
328    unsigned   fFlipAxis;
329
330    int fScrollTestX, fScrollTestY;
331
332    bool make3DReady();
333#ifdef ANDROID
334    virtual
335#endif
336    void changeZoomLevel(float delta);
337
338    void loadView(SkView*);
339    void updateTitle();
340    bool nextSample();
341
342    void toggleZoomer();
343    bool zoomIn();
344    bool zoomOut();
345    void updatePointer(int x, int y);
346    void showZoomer(SkCanvas* canvas);
347
348    void postAnimatingEvent() {
349        if (fAnimating) {
350            SkEvent* evt = new SkEvent(ANIMATING_EVENTTYPE);
351            evt->post(this->getSinkID(), ANIMATING_DELAY);
352        }
353    }
354
355
356    static CanvasType cycle_canvastype(CanvasType);
357
358    typedef SkOSWindow INHERITED;
359};
360
361#ifdef ANDROID
362bool SampleWindow::setGrContext(GrContext* context)
363{
364    if (fGrContext) {
365        fGrContext->unref();
366    }
367    fGrContext = context;
368    fGrContext->ref();
369    return true;
370}
371
372GrContext* SampleWindow::getGrContext()
373{
374    return fGrContext;
375}
376#endif
377
378bool SampleWindow::zoomIn()
379{
380    // Arbitrarily decided
381    if (fFatBitsScale == 25) return false;
382    fFatBitsScale++;
383    this->inval(NULL);
384    return true;
385}
386
387bool SampleWindow::zoomOut()
388{
389    if (fFatBitsScale == 1) return false;
390    fFatBitsScale--;
391    this->inval(NULL);
392    return true;
393}
394
395void SampleWindow::toggleZoomer()
396{
397    fShowZoomer = !fShowZoomer;
398    this->inval(NULL);
399}
400
401void SampleWindow::updatePointer(int x, int y)
402{
403    fMouseX = x;
404    fMouseY = y;
405    if (fShowZoomer) {
406        this->inval(NULL);
407    }
408}
409
410bool SampleWindow::make3DReady() {
411
412#if defined(SK_SUPPORT_GL)
413    if (attachGL()) {
414        if (NULL != fGrContext) {
415        // various gr lifecycle tests
416        #if   0
417            fGrContext->freeGpuResources();
418        #elif 0
419            // this will leak resources.
420            fGrContext->contextLost();
421        #elif 0
422            GrAssert(1 == fGrContext->refcnt());
423            fGrContext->unref();
424            fGrContext = NULL;
425        #endif
426        }
427
428        if (NULL == fGrContext) {
429        #if defined(SK_USE_SHADERS)
430            fGrContext = GrContext::Create(kOpenGL_Shaders_GrEngine, NULL);
431        #else
432            fGrContext = GrContext::Create(kOpenGL_Fixed_GrEngine, NULL);
433        #endif
434            SkDebugf("---- constructor\n");
435        }
436
437        if (NULL != fGrContext) {
438            return true;
439        } else {
440            detachGL();
441        }
442    }
443#endif
444    SkDebugf("Failed to setup 3D");
445    return false;
446}
447
448SampleWindow::CanvasType SampleWindow::cycle_canvastype(CanvasType ct) {
449    static const CanvasType gCT[] = {
450        kPicture_CanvasType,
451        kGPU_CanvasType,
452        kRaster_CanvasType
453    };
454    return gCT[ct];
455}
456
457SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) {
458#ifdef  PIPE_FILE
459    //Clear existing file or create file if it doesn't exist
460    FILE* f = fopen(FILE_PATH, "wb");
461    fclose(f);
462#endif
463
464    fPicture = NULL;
465    fGpuCanvas = NULL;
466
467    fGrContext = NULL;
468
469#ifdef DEFAULT_TO_GPU
470    fCanvasType = kGPU_CanvasType;
471#else
472    fCanvasType = kRaster_CanvasType;
473#endif
474    fUseClip = false;
475    fNClip = false;
476    fRepeatDrawing = false;
477    fAnimating = false;
478    fRotate = false;
479    fScale = false;
480    fRequestGrabImage = false;
481    fUsePipe = false;
482    fMeasureFPS = false;
483    fLCDState = kUnknown_SkTriState;
484    fAAState = kUnknown_SkTriState;
485    fFilterState = kUnknown_SkTriState;
486    fHintingState = kUnknown_SkTriState;
487    fFlipAxis = 0;
488    fScrollTestX = fScrollTestY = 0;
489
490    fMouseX = fMouseY = 0;
491    fFatBitsScale = 8;
492    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
493    fShowZoomer = false;
494
495    fZoomLevel = 0;
496    fZoomScale = SK_Scalar1;
497
498//    this->setConfig(SkBitmap::kRGB_565_Config);
499    this->setConfig(SkBitmap::kARGB_8888_Config);
500    this->setVisibleP(true);
501    this->setClipToBounds(false);
502
503    {
504        const SkViewRegister* reg = SkViewRegister::Head();
505        while (reg) {
506            *fSamples.append() = reg->factory();
507            reg = reg->next();
508        }
509    }
510    fCurrIndex = 0;
511    this->loadView(fSamples[fCurrIndex]());
512
513#ifdef SK_BUILD_FOR_MAC
514    testpdf();
515#endif
516}
517
518SampleWindow::~SampleWindow() {
519    delete fPicture;
520    delete fGpuCanvas;
521    if (NULL != fGrContext) {
522        fGrContext->unref();
523    }
524    fTypeface->unref();
525}
526
527static SkBitmap capture_bitmap(SkCanvas* canvas) {
528    SkBitmap bm;
529    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
530    src.copyTo(&bm, src.config());
531    return bm;
532}
533
534static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
535                        SkBitmap* diff) {
536    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
537
538    SkAutoLockPixels alp0(src);
539    SkAutoLockPixels alp1(orig);
540    for (int y = 0; y < src.height(); y++) {
541        const void* srcP = src.getAddr(0, y);
542        const void* origP = orig.getAddr(0, y);
543        size_t bytes = src.width() * src.bytesPerPixel();
544        if (memcmp(srcP, origP, bytes)) {
545            SkDebugf("---------- difference on line %d\n", y);
546            return true;
547        }
548    }
549    return false;
550}
551
552static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
553{
554    SkColor desiredColor = paint.getColor();
555    paint.setColor(SK_ColorWHITE);
556    const char* c_str = string.c_str();
557    size_t size = string.size();
558    SkRect bounds;
559    paint.measureText(c_str, size, &bounds);
560    bounds.offset(left, top);
561    SkScalar inset = SkIntToScalar(-2);
562    bounds.inset(inset, inset);
563    canvas->drawRect(bounds, paint);
564    if (desiredColor != SK_ColorBLACK) {
565        paint.setColor(SK_ColorBLACK);
566        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
567    }
568    paint.setColor(desiredColor);
569    canvas->drawText(c_str, size, left, top, paint);
570}
571
572#define XCLIP_N  8
573#define YCLIP_N  8
574
575void SampleWindow::draw(SkCanvas* canvas) {
576    // update the animation time
577    gAnimTimePrev = gAnimTime;
578    gAnimTime = SkTime::GetMSecs();
579
580    SkScalar cx = SkScalarHalf(this->width());
581    SkScalar cy = SkScalarHalf(this->height());
582
583    if (fZoomLevel) {
584        SkMatrix m;
585        SkPoint center;
586        m = canvas->getTotalMatrix();//.invert(&m);
587        m.mapXY(cx, cy, &center);
588        cx = center.fX;
589        cy = center.fY;
590
591        m.setTranslate(-cx, -cy);
592        m.postScale(fZoomScale, fZoomScale);
593        m.postTranslate(cx, cy);
594
595        canvas->concat(m);
596    }
597
598    if (fFlipAxis) {
599        SkMatrix m;
600        m.setTranslate(cx, cy);
601        if (fFlipAxis & kFlipAxis_X) {
602            m.preScale(-SK_Scalar1, SK_Scalar1);
603        }
604        if (fFlipAxis & kFlipAxis_Y) {
605            m.preScale(SK_Scalar1, -SK_Scalar1);
606        }
607        m.preTranslate(-cx, -cy);
608        canvas->concat(m);
609    }
610
611    // Apply any gesture matrix
612    if (true) {
613        const SkMatrix& localM = fGesture.localM();
614        if (localM.getType() & SkMatrix::kScale_Mask) {
615            canvas->setExternalMatrix(&localM);
616        }
617        canvas->concat(localM);
618        canvas->concat(fGesture.globalM());
619
620        if (fGesture.isActive()) {
621            this->inval(NULL);
622        }
623    }
624
625    if (fNClip) {
626        this->INHERITED::draw(canvas);
627        SkBitmap orig = capture_bitmap(canvas);
628
629        const SkScalar w = this->width();
630        const SkScalar h = this->height();
631        const SkScalar cw = w / XCLIP_N;
632        const SkScalar ch = h / YCLIP_N;
633        for (int y = 0; y < YCLIP_N; y++) {
634            SkRect r;
635            r.fTop = y * ch;
636            r.fBottom = (y + 1) * ch;
637            if (y == YCLIP_N - 1) {
638                r.fBottom = h;
639            }
640            for (int x = 0; x < XCLIP_N; x++) {
641                SkAutoCanvasRestore acr(canvas, true);
642                r.fLeft = x * cw;
643                r.fRight = (x + 1) * cw;
644                if (x == XCLIP_N - 1) {
645                    r.fRight = w;
646                }
647                canvas->clipRect(r);
648                this->INHERITED::draw(canvas);
649            }
650        }
651
652        SkBitmap diff;
653        if (bitmap_diff(canvas, orig, &diff)) {
654        }
655    } else {
656        this->INHERITED::draw(canvas);
657    }
658    if (fShowZoomer && fCanvasType != kGPU_CanvasType) {
659        // In the GPU case, INHERITED::draw calls beforeChildren, which
660        // creates an SkGpuCanvas.  All further draw calls are directed
661        // at that canvas, which is deleted in afterChildren (which is
662        // also called by draw), so we cannot show the zoomer here.
663        // Instead, we call it inside afterChildren.
664        showZoomer(canvas);
665    }
666}
667
668void SampleWindow::showZoomer(SkCanvas* canvas) {
669        int count = canvas->save();
670        canvas->resetMatrix();
671        // Ensure the mouse position is on screen.
672        int width = SkScalarRound(this->width());
673        int height = SkScalarRound(this->height());
674        if (fMouseX >= width) fMouseX = width - 1;
675        else if (fMouseX < 0) fMouseX = 0;
676        if (fMouseY >= height) fMouseY = height - 1;
677        else if (fMouseY < 0) fMouseY = 0;
678
679        SkBitmap bitmap = capture_bitmap(canvas);
680        bitmap.lockPixels();
681
682        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
683        int zoomedWidth = (width >> 1) | 1;
684        int zoomedHeight = (height >> 1) | 1;
685        SkIRect src;
686        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
687        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
688        SkRect dest;
689        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
690        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
691        SkPaint paint;
692        // Clear the background behind our zoomed in view
693        paint.setColor(SK_ColorWHITE);
694        canvas->drawRect(dest, paint);
695        canvas->drawBitmapRect(bitmap, &src, dest);
696        paint.setColor(SK_ColorBLACK);
697        paint.setStyle(SkPaint::kStroke_Style);
698        // Draw a border around the pixel in the middle
699        SkRect originalPixel;
700        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
701        SkMatrix matrix;
702        SkRect scalarSrc;
703        scalarSrc.set(src);
704        SkColor color = bitmap.getColor(fMouseX, fMouseY);
705        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
706            SkRect pixel;
707            matrix.mapRect(&pixel, originalPixel);
708            // TODO Perhaps measure the values and make the outline white if it's "dark"
709            if (color == SK_ColorBLACK) {
710                paint.setColor(SK_ColorWHITE);
711            }
712            canvas->drawRect(pixel, paint);
713        }
714        paint.setColor(SK_ColorBLACK);
715        // Draw a border around the destination rectangle
716        canvas->drawRect(dest, paint);
717        paint.setStyle(SkPaint::kStrokeAndFill_Style);
718        // Identify the pixel and its color on screen
719        paint.setTypeface(fTypeface);
720        paint.setAntiAlias(true);
721        SkScalar lineHeight = paint.getFontMetrics(NULL);
722        SkString string;
723        string.appendf("(%i, %i)", fMouseX, fMouseY);
724        SkScalar left = dest.fLeft + SkIntToScalar(3);
725        SkScalar i = SK_Scalar1;
726        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
727        // Alpha
728        i += SK_Scalar1;
729        string.reset();
730        string.appendf("A: %X", SkColorGetA(color));
731        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
732        // Red
733        i += SK_Scalar1;
734        string.reset();
735        string.appendf("R: %X", SkColorGetR(color));
736        paint.setColor(SK_ColorRED);
737        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
738        // Green
739        i += SK_Scalar1;
740        string.reset();
741        string.appendf("G: %X", SkColorGetG(color));
742        paint.setColor(SK_ColorGREEN);
743        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
744        // Blue
745        i += SK_Scalar1;
746        string.reset();
747        string.appendf("B: %X", SkColorGetB(color));
748        paint.setColor(SK_ColorBLUE);
749        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
750        canvas->restoreToCount(count);
751}
752
753void SampleWindow::onDraw(SkCanvas* canvas) {
754    if (fRepeatDrawing) {
755        this->inval(NULL);
756    }
757}
758
759#include "SkColorPriv.h"
760
761static void reverseRedAndBlue(const SkBitmap& bm) {
762    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
763    uint8_t* p = (uint8_t*)bm.getPixels();
764    uint8_t* stop = p + bm.getSize();
765    while (p < stop) {
766        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
767        unsigned scale = SkAlpha255To256(p[3]);
768        unsigned r = p[2];
769        unsigned b = p[0];
770        p[0] = SkAlphaMul(r, scale);
771        p[1] = SkAlphaMul(p[1], scale);
772        p[2] = SkAlphaMul(b, scale);
773        p += 4;
774    }
775}
776
777SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
778    if (kGPU_CanvasType != fCanvasType) {
779#ifdef SK_SUPPORT_GL
780        detachGL();
781#endif
782    }
783
784    switch (fCanvasType) {
785        case kRaster_CanvasType:
786            canvas = this->INHERITED::beforeChildren(canvas);
787            break;
788        case kPicture_CanvasType:
789            fPicture = new SkPicture;
790            canvas = fPicture->beginRecording(9999, 9999);
791            break;
792        case kGPU_CanvasType: {
793            if (make3DReady()) {
794                SkDevice* device = canvas->getDevice();
795                const SkBitmap& bitmap = device->accessBitmap(true);
796
797                GrRenderTarget* renderTarget;
798                renderTarget = fGrContext->createRenderTargetFrom3DApiState();
799                fGpuCanvas = new SkGpuCanvas(fGrContext, renderTarget);
800                renderTarget->unref();
801
802                device = fGpuCanvas->createDevice(SkBitmap::kARGB_8888_Config,
803                                                  bitmap.width(), bitmap.height(),
804                                                  false, false);
805                fGpuCanvas->setDevice(device)->unref();
806
807                fGpuCanvas->concat(canvas->getTotalMatrix());
808                canvas = fGpuCanvas;
809
810            } else {
811                canvas = this->INHERITED::beforeChildren(canvas);
812            }
813            break;
814        }
815    }
816
817    if (fUseClip) {
818        canvas->drawColor(0xFFFF88FF);
819        canvas->clipPath(fClipPath);
820    }
821
822    return canvas;
823}
824
825static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
826                      const SkRegion& rgn) {
827    SkCanvas    canvas(bm);
828    SkRegion    inval(rgn);
829
830    inval.translate(r.fLeft, r.fTop);
831    canvas.clipRegion(inval);
832    canvas.drawColor(0xFFFF8080);
833}
834
835void SampleWindow::afterChildren(SkCanvas* orig) {
836    if (fRequestGrabImage) {
837        fRequestGrabImage = false;
838
839        SkCanvas* canvas = fGpuCanvas ? fGpuCanvas : orig;
840        SkDevice* device = canvas->getDevice();
841        SkBitmap bmp;
842        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
843            static int gSampleGrabCounter;
844            SkString name;
845            name.printf("sample_grab_%d", gSampleGrabCounter++);
846            SkImageEncoder::EncodeFile(name.c_str(), bmp,
847                                       SkImageEncoder::kPNG_Type, 100);
848        }
849    }
850
851    switch (fCanvasType) {
852        case kRaster_CanvasType:
853            break;
854        case kPicture_CanvasType:
855            if (true) {
856                SkPicture* pict = new SkPicture(*fPicture);
857                fPicture->unref();
858                orig->drawPicture(*pict);
859                pict->unref();
860            } else if (true) {
861                SkDynamicMemoryWStream ostream;
862                fPicture->serialize(&ostream);
863                fPicture->unref();
864
865                SkMemoryStream istream(ostream.getStream(), ostream.getOffset());
866                SkPicture pict(&istream);
867                orig->drawPicture(pict);
868            } else {
869                fPicture->draw(orig);
870                fPicture->unref();
871            }
872            fPicture = NULL;
873            break;
874#ifdef SK_SUPPORT_GL
875        case kGPU_CanvasType:
876            if (fShowZoomer && fGpuCanvas) {
877                this->showZoomer(fGpuCanvas);
878            }
879            delete fGpuCanvas;
880            fGpuCanvas = NULL;
881            presentGL();
882            break;
883#endif
884    }
885
886    // Do this after presentGL and other finishing, rather than in afterChild
887    if (fMeasureFPS && fMeasureFPS_Time) {
888        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
889        this->updateTitle();
890        postInvalDelay(this->getSinkID());
891    }
892
893    //    if ((fScrollTestX | fScrollTestY) != 0)
894    if (false) {
895        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
896        int dx = fScrollTestX * 7;
897        int dy = fScrollTestY * 7;
898        SkIRect r;
899        SkRegion inval;
900
901        r.set(50, 50, 50+100, 50+100);
902        bm.scrollRect(&r, dx, dy, &inval);
903        paint_rgn(bm, r, inval);
904    }
905}
906
907void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
908    if (fScale) {
909        SkScalar scale = SK_Scalar1 * 7 / 10;
910        SkScalar cx = this->width() / 2;
911        SkScalar cy = this->height() / 2;
912        canvas->translate(cx, cy);
913        canvas->scale(scale, scale);
914        canvas->translate(-cx, -cy);
915    }
916    if (fRotate) {
917        SkScalar cx = this->width() / 2;
918        SkScalar cy = this->height() / 2;
919        canvas->translate(cx, cy);
920        canvas->rotate(SkIntToScalar(30));
921        canvas->translate(-cx, -cy);
922    }
923
924    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
925                                       fFilterState, fHintingState))->unref();
926
927    if (fMeasureFPS) {
928        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
929        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
930            fMeasureFPS_Time = SkTime::GetMSecs();
931        }
932    } else {
933        (void)SampleView::SetRepeatDraw(child, 1);
934    }
935    (void)SampleView::SetUsePipe(child, fUsePipe);
936}
937
938void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
939    canvas->setDrawFilter(NULL);
940}
941
942static SkBitmap::Config gConfigCycle[] = {
943    SkBitmap::kNo_Config,           // none -> none
944    SkBitmap::kNo_Config,           // a1 -> none
945    SkBitmap::kNo_Config,           // a8 -> none
946    SkBitmap::kNo_Config,           // index8 -> none
947    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
948    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
949    SkBitmap::kRGB_565_Config       // 8888 -> 565
950};
951
952static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
953    return gConfigCycle[c];
954}
955
956void SampleWindow::changeZoomLevel(float delta) {
957    fZoomLevel += SkFloatToScalar(delta);
958    if (fZoomLevel > 0) {
959        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
960        fZoomScale = fZoomLevel + SK_Scalar1;
961    } else if (fZoomLevel < 0) {
962        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
963        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
964    } else {
965        fZoomScale = SK_Scalar1;
966    }
967
968    this->updateTitle();
969
970    this->inval(NULL);
971}
972
973bool SampleWindow::nextSample() {
974    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
975    this->loadView(fSamples[fCurrIndex]());
976    return true;
977}
978
979bool SampleWindow::onEvent(const SkEvent& evt) {
980    if (evt.isType(ANIMATING_EVENTTYPE)) {
981        if (fAnimating) {
982            this->nextSample();
983            this->postAnimatingEvent();
984        }
985        return true;
986    }
987    if (evt.isType("set-curr-index")) {
988        fCurrIndex = evt.getFast32() % fSamples.count();
989        this->loadView(fSamples[fCurrIndex]());
990        return true;
991    }
992    if (isInvalEvent(evt)) {
993        this->inval(NULL);
994        return true;
995    }
996    return this->INHERITED::onEvent(evt);
997}
998
999bool SampleWindow::onQuery(SkEvent* query) {
1000    if (query->isType("get-slide-count")) {
1001        query->setFast32(fSamples.count());
1002        return true;
1003    }
1004    if (query->isType("get-slide-title")) {
1005        SkView* view = fSamples[query->getFast32()]();
1006        SkEvent evt(gTitleEvtName);
1007        if (view->doQuery(&evt)) {
1008            query->setString("title", evt.findString(gTitleEvtName));
1009        }
1010        SkSafeUnref(view);
1011        return true;
1012    }
1013    if (query->isType("use-fast-text")) {
1014        SkEvent evt(gFastTextEvtName);
1015        return curr_view(this)->doQuery(&evt);
1016    }
1017    return this->INHERITED::onQuery(query);
1018}
1019
1020static void cleanup_for_filename(SkString* name) {
1021    char* str = name->writable_str();
1022    for (size_t i = 0; i < name->size(); i++) {
1023        switch (str[i]) {
1024            case ':': str[i] = '-'; break;
1025            case '/': str[i] = '-'; break;
1026            case ' ': str[i] = '_'; break;
1027            default: break;
1028        }
1029    }
1030}
1031
1032bool SampleWindow::onHandleChar(SkUnichar uni) {
1033    {
1034        SkView* view = curr_view(this);
1035        if (view) {
1036            SkEvent evt(gCharEvtName);
1037            evt.setFast32(uni);
1038            if (view->doQuery(&evt)) {
1039                return true;
1040            }
1041        }
1042    }
1043
1044    int dx = 0xFF;
1045    int dy = 0xFF;
1046
1047    switch (uni) {
1048        case '5': dx =  0; dy =  0; break;
1049        case '8': dx =  0; dy = -1; break;
1050        case '6': dx =  1; dy =  0; break;
1051        case '2': dx =  0; dy =  1; break;
1052        case '4': dx = -1; dy =  0; break;
1053        case '7': dx = -1; dy = -1; break;
1054        case '9': dx =  1; dy = -1; break;
1055        case '3': dx =  1; dy =  1; break;
1056        case '1': dx = -1; dy =  1; break;
1057
1058        default:
1059            break;
1060    }
1061
1062    if (0xFF != dx && 0xFF != dy) {
1063        if ((dx | dy) == 0) {
1064            fScrollTestX = fScrollTestY = 0;
1065        } else {
1066            fScrollTestX += dx;
1067            fScrollTestY += dy;
1068        }
1069        this->inval(NULL);
1070        return true;
1071    }
1072
1073    switch (uni) {
1074        case 'a':
1075            fAnimating = !fAnimating;
1076            this->postAnimatingEvent();
1077            this->updateTitle();
1078            return true;
1079        case 'b':
1080            fAAState = cycle_tristate(fAAState);
1081            this->updateTitle();
1082            this->inval(NULL);
1083            break;
1084        case 'c':
1085            fUseClip = !fUseClip;
1086            this->inval(NULL);
1087            this->updateTitle();
1088            return true;
1089        case 'd':
1090            SkGraphics::SetFontCacheUsed(0);
1091            return true;
1092        case 'f':
1093            fMeasureFPS = !fMeasureFPS;
1094            this->inval(NULL);
1095            break;
1096        case 'g':
1097            fRequestGrabImage = true;
1098            this->inval(NULL);
1099            break;
1100        case 'h':
1101            fHintingState = cycle_tristate(fHintingState);
1102            this->updateTitle();
1103            this->inval(NULL);
1104            break;
1105        case 'i':
1106            this->zoomIn();
1107            break;
1108        case 'l':
1109            fLCDState = cycle_tristate(fLCDState);
1110            this->updateTitle();
1111            this->inval(NULL);
1112            break;
1113        case 'n':
1114            fFilterState = cycle_tristate(fFilterState);
1115            this->updateTitle();
1116            this->inval(NULL);
1117            break;
1118        case 'o':
1119            this->zoomOut();
1120            break;
1121        case 'p':
1122            fUsePipe = !fUsePipe;
1123            this->updateTitle();
1124            this->inval(NULL);
1125            break;
1126        case 'r':
1127            fRotate = !fRotate;
1128            this->inval(NULL);
1129            this->updateTitle();
1130            return true;
1131        case 's':
1132            fScale = !fScale;
1133            this->inval(NULL);
1134            this->updateTitle();
1135            return true;
1136        case 'x':
1137            fFlipAxis ^= kFlipAxis_X;
1138            this->updateTitle();
1139            this->inval(NULL);
1140            break;
1141        case 'y':
1142            fFlipAxis ^= kFlipAxis_Y;
1143            this->updateTitle();
1144            this->inval(NULL);
1145            break;
1146        case 'z':
1147            this->toggleZoomer();
1148            break;
1149        default:
1150            break;
1151    }
1152
1153    return this->INHERITED::onHandleChar(uni);
1154}
1155
1156#include "SkDumpCanvas.h"
1157
1158bool SampleWindow::onHandleKey(SkKey key) {
1159    {
1160        SkView* view = curr_view(this);
1161        if (view) {
1162            SkEvent evt(gKeyEvtName);
1163            evt.setFast32(key);
1164            if (view->doQuery(&evt)) {
1165                return true;
1166            }
1167        }
1168    }
1169
1170    switch (key) {
1171        case kRight_SkKey:
1172            if (this->nextSample()) {
1173                return true;
1174            }
1175            break;
1176        case kLeft_SkKey:
1177            fCanvasType = cycle_canvastype(fCanvasType);
1178            this->updateTitle();
1179            this->inval(NULL);
1180            return true;
1181        case kUp_SkKey:
1182            if (USE_ARROWS_FOR_ZOOM) {
1183                this->changeZoomLevel(1.f);
1184            } else {
1185                fNClip = !fNClip;
1186                this->inval(NULL);
1187                this->updateTitle();
1188            }
1189            return true;
1190        case kDown_SkKey:
1191            if (USE_ARROWS_FOR_ZOOM) {
1192                this->changeZoomLevel(-1.f);
1193            } else {
1194                this->setConfig(cycle_configs(this->getBitmap().config()));
1195                this->updateTitle();
1196            }
1197            return true;
1198        case kOK_SkKey:
1199            if (false) {
1200                SkDebugfDumper dumper;
1201                SkDumpCanvas dc(&dumper);
1202                this->draw(&dc);
1203            } else {
1204                fRepeatDrawing = !fRepeatDrawing;
1205                if (fRepeatDrawing) {
1206                    this->inval(NULL);
1207                }
1208            }
1209            return true;
1210        case kBack_SkKey:
1211            this->loadView(NULL);
1212            return true;
1213        default:
1214            break;
1215    }
1216    return this->INHERITED::onHandleKey(key);
1217}
1218
1219///////////////////////////////////////////////////////////////////////////////
1220
1221static const char gGestureClickType[] = "GestureClickType";
1222
1223bool SampleWindow::onDispatchClick(int x, int y, Click::State state) {
1224    if (Click::kMoved_State == state) {
1225        updatePointer(x, y);
1226    }
1227    int w = SkScalarRound(this->width());
1228    int h = SkScalarRound(this->height());
1229
1230    // check for the resize-box
1231    if (w - x < 16 && h - y < 16) {
1232        return false;   // let the OS handle the click
1233    } else {
1234        return this->INHERITED::onDispatchClick(x, y, state);
1235    }
1236}
1237
1238class GestureClick : public SkView::Click {
1239public:
1240    GestureClick(SkView* target) : SkView::Click(target) {
1241        this->setType(gGestureClickType);
1242    }
1243
1244    static bool IsGesture(Click* click) {
1245        return click->isType(gGestureClickType);
1246    }
1247};
1248
1249SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1250    return new GestureClick(this);
1251}
1252
1253bool SampleWindow::onClick(Click* click) {
1254    if (GestureClick::IsGesture(click)) {
1255        float x = SkScalarToFloat(click->fCurr.fX);
1256        float y = SkScalarToFloat(click->fCurr.fY);
1257        switch (click->fState) {
1258            case SkView::Click::kDown_State:
1259                fGesture.touchBegin(click, x, y);
1260                break;
1261            case SkView::Click::kMoved_State:
1262                fGesture.touchMoved(click, x, y);
1263                this->inval(NULL);
1264                break;
1265            case SkView::Click::kUp_State:
1266                fGesture.touchEnd(click);
1267                this->inval(NULL);
1268                break;
1269        }
1270        return true;
1271    }
1272    return false;
1273}
1274
1275///////////////////////////////////////////////////////////////////////////////
1276
1277void SampleWindow::loadView(SkView* view) {
1278    SkView::F2BIter iter(this);
1279    SkView* prev = iter.next();
1280    if (prev) {
1281        prev->detachFromParent();
1282    }
1283
1284    if (NULL == view) {
1285        view = create_overview(fSamples.count(), fSamples.begin());
1286    }
1287    view->setVisibleP(true);
1288    view->setClipToBounds(false);
1289    this->attachChildToFront(view)->unref();
1290    view->setSize(this->width(), this->height());
1291
1292    this->updateTitle();
1293}
1294
1295static const char* gConfigNames[] = {
1296    "unknown config",
1297    "A1",
1298    "A8",
1299    "Index8",
1300    "565",
1301    "4444",
1302    "8888"
1303};
1304
1305static const char* configToString(SkBitmap::Config c) {
1306    return gConfigNames[c];
1307}
1308
1309static const char* gCanvasTypePrefix[] = {
1310    "raster: ",
1311    "picture: ",
1312    "opengl: "
1313};
1314
1315static const char* trystate_str(SkTriState state,
1316                                const char trueStr[], const char falseStr[]) {
1317    if (kTrue_SkTriState == state) {
1318        return trueStr;
1319    } else if (kFalse_SkTriState == state) {
1320        return falseStr;
1321    }
1322    return NULL;
1323}
1324
1325void SampleWindow::updateTitle() {
1326    SkString title;
1327
1328    SkView::F2BIter iter(this);
1329    SkView* view = iter.next();
1330    SkEvent evt(gTitleEvtName);
1331    if (view->doQuery(&evt)) {
1332        title.set(evt.findString(gTitleEvtName));
1333    }
1334    if (title.size() == 0) {
1335        title.set("<unknown>");
1336    }
1337
1338    title.prepend(gCanvasTypePrefix[fCanvasType]);
1339
1340    title.prepend(" ");
1341    title.prepend(configToString(this->getBitmap().config()));
1342
1343    if (fAnimating) {
1344        title.prepend("<A> ");
1345    }
1346    if (fScale) {
1347        title.prepend("<S> ");
1348    }
1349    if (fRotate) {
1350        title.prepend("<R> ");
1351    }
1352    if (fNClip) {
1353        title.prepend("<C> ");
1354    }
1355
1356    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
1357    title.prepend(trystate_str(fAAState, "AA ", "aa "));
1358    title.prepend(trystate_str(fFilterState, "H ", "h "));
1359    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
1360    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
1361
1362    if (fZoomLevel) {
1363        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
1364    }
1365
1366    if (fMeasureFPS) {
1367        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
1368    }
1369    if (fUsePipe && SampleView::IsSampleView(view)) {
1370        title.prepend("<P> ");
1371    }
1372    if (SampleView::IsSampleView(view)) {
1373        title.prepend("! ");
1374    }
1375
1376    this->setTitle(title.c_str());
1377}
1378
1379void SampleWindow::onSizeChange() {
1380    this->INHERITED::onSizeChange();
1381
1382    SkView::F2BIter iter(this);
1383    SkView* view = iter.next();
1384    view->setSize(this->width(), this->height());
1385
1386    // rebuild our clippath
1387    {
1388        const SkScalar W = this->width();
1389        const SkScalar H = this->height();
1390
1391        fClipPath.reset();
1392#if 0
1393        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
1394            SkRect r;
1395            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
1396            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
1397                fClipPath.addRect(r);
1398        }
1399#else
1400        SkRect r;
1401        r.set(0, 0, W, H);
1402        fClipPath.addRect(r, SkPath::kCCW_Direction);
1403        r.set(W/4, H/4, W*3/4, H*3/4);
1404        fClipPath.addRect(r, SkPath::kCW_Direction);
1405#endif
1406    }
1407
1408    this->updateTitle();    // to refresh our config
1409}
1410
1411///////////////////////////////////////////////////////////////////////////////
1412
1413static const char is_sample_view_tag[] = "sample-is-sample-view";
1414static const char repeat_count_tag[] = "sample-set-repeat-count";
1415static const char set_use_pipe_tag[] = "sample-set-use-pipe";
1416
1417bool SampleView::IsSampleView(SkView* view) {
1418    SkEvent evt(is_sample_view_tag);
1419    return view->doQuery(&evt);
1420}
1421
1422bool SampleView::SetRepeatDraw(SkView* view, int count) {
1423    SkEvent evt(repeat_count_tag);
1424    evt.setFast32(count);
1425    return view->doEvent(evt);
1426}
1427
1428bool SampleView::SetUsePipe(SkView* view, bool pred) {
1429    SkEvent evt(set_use_pipe_tag);
1430    evt.setFast32(pred);
1431    return view->doEvent(evt);
1432}
1433
1434bool SampleView::onEvent(const SkEvent& evt) {
1435    if (evt.isType(repeat_count_tag)) {
1436        fRepeatCount = evt.getFast32();
1437        return true;
1438    }
1439    if (evt.isType(set_use_pipe_tag)) {
1440        fUsePipe = !!evt.getFast32();
1441        return true;
1442    }
1443    return this->INHERITED::onEvent(evt);
1444}
1445
1446bool SampleView::onQuery(SkEvent* evt) {
1447    if (evt->isType(is_sample_view_tag)) {
1448        return true;
1449    }
1450    return this->INHERITED::onQuery(evt);
1451}
1452
1453#ifdef TEST_GPIPE
1454    #include "SkGPipe.h"
1455
1456class SimplePC : public SkGPipeController {
1457public:
1458    SimplePC(SkCanvas* target);
1459    ~SimplePC();
1460
1461    virtual void* requestBlock(size_t minRequest, size_t* actual);
1462    virtual void notifyWritten(size_t bytes);
1463
1464private:
1465    SkGPipeReader   fReader;
1466    void*           fBlock;
1467    size_t          fBlockSize;
1468    size_t          fBytesWritten;
1469    int             fAtomsWritten;
1470    SkGPipeReader::Status   fStatus;
1471
1472    size_t        fTotalWritten;
1473};
1474
1475SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
1476    fBlock = NULL;
1477    fBlockSize = fBytesWritten = 0;
1478    fStatus = SkGPipeReader::kDone_Status;
1479    fTotalWritten = 0;
1480    fAtomsWritten = 0;
1481}
1482
1483SimplePC::~SimplePC() {
1484//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
1485    sk_free(fBlock);
1486
1487    if (fTotalWritten) {
1488        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
1489                 fAtomsWritten, fStatus);
1490    }
1491}
1492
1493void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
1494    sk_free(fBlock);
1495
1496    fBlockSize = minRequest * 4;
1497    fBlock = sk_malloc_throw(fBlockSize);
1498    fBytesWritten = 0;
1499    *actual = fBlockSize;
1500    return fBlock;
1501}
1502
1503void SimplePC::notifyWritten(size_t bytes) {
1504    SkASSERT(fBytesWritten + bytes <= fBlockSize);
1505
1506#ifdef  PIPE_FILE
1507    //File is open in append mode
1508    FILE* f = fopen(FILE_PATH, "ab");
1509    SkASSERT(f != NULL);
1510    fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
1511    fclose(f);
1512#endif
1513
1514    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
1515    SkASSERT(SkGPipeReader::kError_Status != fStatus);
1516    fBytesWritten += bytes;
1517    fTotalWritten += bytes;
1518
1519    fAtomsWritten += 1;
1520}
1521
1522#endif
1523
1524
1525void SampleView::onDraw(SkCanvas* canvas) {
1526#ifdef TEST_GPIPE
1527    SimplePC controller(canvas);
1528    SkGPipeWriter writer;
1529    if (fUsePipe) {
1530        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
1531//        flags = 0;
1532        canvas = writer.startRecording(&controller, flags);
1533    }
1534#endif
1535
1536    this->onDrawBackground(canvas);
1537
1538    for (int i = 0; i < fRepeatCount; i++) {
1539        SkAutoCanvasRestore acr(canvas, true);
1540        this->onDrawContent(canvas);
1541    }
1542}
1543
1544void SampleView::onDrawBackground(SkCanvas* canvas) {
1545    canvas->drawColor(fBGColor);
1546}
1547
1548///////////////////////////////////////////////////////////////////////////////
1549
1550template <typename T> void SkTBSort(T array[], int count) {
1551    for (int i = 1; i < count - 1; i++) {
1552        bool didSwap = false;
1553        for (int j = count - 1; j > i; --j) {
1554            if (array[j] < array[j-1]) {
1555                T tmp(array[j-1]);
1556                array[j-1] = array[j];
1557                array[j] = tmp;
1558                didSwap = true;
1559            }
1560        }
1561        if (!didSwap) {
1562            break;
1563        }
1564    }
1565
1566    for (int k = 0; k < count - 1; k++) {
1567        SkASSERT(!(array[k+1] < array[k]));
1568    }
1569}
1570
1571#include "SkRandom.h"
1572
1573static void rand_rect(SkIRect* rect, SkRandom& rand) {
1574    int bits = 8;
1575    int shift = 32 - bits;
1576    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
1577              rand.nextU() >> shift, rand.nextU() >> shift);
1578    rect->sort();
1579}
1580
1581static void dumpRect(const SkIRect& r) {
1582    SkDebugf(" { %d, %d, %d, %d },\n",
1583             r.fLeft, r.fTop,
1584             r.fRight, r.fBottom);
1585}
1586
1587static void test_rects(const SkIRect rect[], int count) {
1588    SkRegion rgn0, rgn1;
1589
1590    for (int i = 0; i < count; i++) {
1591        rgn0.op(rect[i], SkRegion::kUnion_Op);
1592     //   dumpRect(rect[i]);
1593    }
1594    rgn1.setRects(rect, count);
1595
1596    if (rgn0 != rgn1) {
1597        SkDebugf("\n");
1598        for (int i = 0; i < count; i++) {
1599            dumpRect(rect[i]);
1600        }
1601        SkDebugf("\n");
1602    }
1603}
1604
1605static void test() {
1606    size_t i;
1607
1608    const SkIRect r0[] = {
1609        { 0, 0, 1, 1 },
1610        { 2, 2, 3, 3 },
1611    };
1612    const SkIRect r1[] = {
1613        { 0, 0, 1, 3 },
1614        { 1, 1, 2, 2 },
1615        { 2, 0, 3, 3 },
1616    };
1617    const SkIRect r2[] = {
1618        { 0, 0, 1, 2 },
1619        { 2, 1, 3, 3 },
1620        { 4, 0, 5, 1 },
1621        { 6, 0, 7, 4 },
1622    };
1623
1624    static const struct {
1625        const SkIRect* fRects;
1626        int            fCount;
1627    } gRecs[] = {
1628        { r0, SK_ARRAY_COUNT(r0) },
1629        { r1, SK_ARRAY_COUNT(r1) },
1630        { r2, SK_ARRAY_COUNT(r2) },
1631    };
1632
1633    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
1634        test_rects(gRecs[i].fRects, gRecs[i].fCount);
1635    }
1636
1637    SkRandom rand;
1638    for (i = 0; i < 10000; i++) {
1639        SkRegion rgn0, rgn1;
1640
1641        const int N = 8;
1642        SkIRect rect[N];
1643        for (int j = 0; j < N; j++) {
1644            rand_rect(&rect[j], rand);
1645        }
1646        test_rects(rect, N);
1647    }
1648}
1649
1650SkOSWindow* create_sk_window(void* hwnd) {
1651//    test();
1652    return new SampleWindow(hwnd);
1653}
1654
1655void get_preferred_size(int* x, int* y, int* width, int* height) {
1656    *x = 10;
1657    *y = 50;
1658    *width = 640;
1659    *height = 480;
1660}
1661
1662void application_init() {
1663//    setenv("ANDROID_ROOT", "../../../data", 0);
1664#ifdef SK_BUILD_FOR_MAC
1665    setenv("ANDROID_ROOT", "/android/device/data", 0);
1666#endif
1667    SkGraphics::Init();
1668    SkEvent::Init();
1669}
1670
1671void application_term() {
1672    SkEvent::Term();
1673    SkGraphics::Term();
1674}
1675