SampleApp.cpp revision 7265e725555098637498db2f397623d7991ceb4b 
1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include "SampleApp.h"
8
9#include "SkData.h"
10#include "SkCanvas.h"
11#include "SkDevice.h"
12#include "SkGpuDevice.h"
13#include "SkGraphics.h"
14#include "SkImageEncoder.h"
15#include "SkPaint.h"
16#include "SkPicture.h"
17#include "SkStream.h"
18#include "SkTime.h"
19#include "SkWindow.h"
20
21#include "SampleCode.h"
22#include "GrContext.h"
23#include "SkTypeface.h"
24
25#include "gl/GrGLInterface.h"
26#include "GrRenderTarget.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
57#if SK_ANGLE
58//#define DEFAULT_TO_ANGLE 1
59#else
60//#define DEFAULT_TO_GPU 1
61#endif
62
63extern SkView* create_overview(int, const SkViewFactory*[]);
64extern bool is_overview(SkView* view);
65extern SkView* create_transition(SkView*, SkView*, int);
66extern bool is_transition(SkView* view);
67
68
69#define ANIMATING_EVENTTYPE "nextSample"
70#define ANIMATING_DELAY     750
71
72#ifdef SK_DEBUG
73    #define FPS_REPEAT_MULTIPLIER   1
74#else
75    #define FPS_REPEAT_MULTIPLIER   10
76#endif
77#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
78
79static SampleWindow* gSampleWindow;
80
81static void postEventToSink(SkEvent* evt, SkEventSink* sink) {
82    evt->setTargetID(sink->getSinkID())->post();
83}
84
85///////////////////////////////////////////////////////////////////////////////
86
87static const char* skip_until(const char* str, const char* skip) {
88    if (!str) {
89        return NULL;
90    }
91    return strstr(str, skip);
92}
93
94static const char* skip_past(const char* str, const char* skip) {
95    const char* found = skip_until(str, skip);
96    if (!found) {
97        return NULL;
98    }
99    return found + strlen(skip);
100}
101
102static const char* gPrefFileName = "sampleapp_prefs.txt";
103
104static bool readTitleFromPrefs(SkString* title) {
105    SkFILEStream stream(gPrefFileName);
106    if (!stream.isValid()) {
107        return false;
108    }
109
110    int len = stream.getLength();
111    SkString data(len);
112    stream.read(data.writable_str(), len);
113    const char* s = data.c_str();
114
115    s = skip_past(s, "curr-slide-title");
116    s = skip_past(s, "=");
117    s = skip_past(s, "\"");
118    const char* stop = skip_until(s, "\"");
119    if (stop > s) {
120        title->set(s, stop - s);
121        return true;
122    }
123    return false;
124}
125
126static void writeTitleToPrefs(const char* title) {
127    SkFILEWStream stream(gPrefFileName);
128    SkString data;
129    data.printf("curr-slide-title = \"%s\"\n", title);
130    stream.write(data.c_str(), data.size());
131}
132
133///////////////////////////////////////////////////////////////////////////////
134
135class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
136public:
137
138    DefaultDeviceManager()
139        : fCurContext(NULL)
140        , fCurIntf(NULL)
141        , fCurRenderTarget(NULL)
142        , fBackend(kNone_BackEndType)
143        , fMSAASampleCount(0) {
144    }
145
146    virtual ~DefaultDeviceManager() {
147        SkSafeUnref(fCurContext);
148        SkSafeUnref(fCurIntf);
149        SkSafeUnref(fCurRenderTarget);
150    }
151
152    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
153        SkASSERT(kNone_BackEndType == fBackend);
154
155        fBackend = kNone_BackEndType;
156
157        switch (win->getDeviceType()) {
158            case kRaster_DeviceType:
159                // fallthrough
160            case kPicture_DeviceType:
161                // fallthrough
162            case kGPU_DeviceType:
163                // fallthrough
164            case kNullGPU_DeviceType:
165                // all these guys use the native backend
166                fBackend = kNativeGL_BackEndType;
167                break;
168#if SK_ANGLE
169            case kANGLE_DeviceType:
170                // ANGLE is really the only odd man out
171                fBackend = kANGLE_BackEndType;
172                break;
173#endif
174            default:
175                SkASSERT(false);
176                break;
177        }
178
179        bool result = win->attach(fBackend, msaaSampleCount);
180        if (!result) {
181            SkDebugf("Failed to initialize GL");
182            return;
183        }
184        fMSAASampleCount = msaaSampleCount;
185
186        SkASSERT(NULL == fCurIntf);
187        switch (win->getDeviceType()) {
188            case kRaster_DeviceType:
189                // fallthrough
190            case kPicture_DeviceType:
191                // fallthrough
192            case kGPU_DeviceType:
193                // all these guys use the native interface
194                fCurIntf = GrGLCreateNativeInterface();
195                break;
196#if SK_ANGLE
197            case kANGLE_DeviceType:
198                fCurIntf = GrGLCreateANGLEInterface();
199                break;
200#endif
201            case kNullGPU_DeviceType:
202                fCurIntf = GrGLCreateNullInterface();
203                break;
204            default:
205                SkASSERT(false);
206                break;
207        }
208
209        SkASSERT(NULL == fCurContext);
210        fCurContext = GrContext::Create(kOpenGL_Shaders_GrEngine,
211                                        (GrPlatform3DContext) fCurIntf);
212
213        if (NULL == fCurContext || NULL == fCurIntf) {
214            // We need some context and interface to see results
215            SkSafeUnref(fCurContext);
216            SkSafeUnref(fCurIntf);
217            SkDebugf("Failed to setup 3D");
218
219            win->detach();
220        }
221
222        // call windowSizeChanged to create the render target
223        windowSizeChanged(win);
224    }
225
226    virtual void tearDownBackend(SampleWindow *win) {
227
228        SkSafeUnref(fCurContext);
229        fCurContext = NULL;
230
231        SkSafeUnref(fCurIntf);
232        fCurIntf = NULL;
233
234        SkSafeUnref(fCurRenderTarget);
235        fCurRenderTarget = NULL;
236
237        win->detach();
238        fBackend = kNone_BackEndType;
239    }
240
241    virtual bool prepareCanvas(SampleWindow::DeviceType dType,
242                               SkCanvas* canvas,
243                               SampleWindow* win) {
244        switch (dType) {
245            case kRaster_DeviceType:
246                // fallthrough
247            case kPicture_DeviceType:
248                // fallthrough
249#if SK_ANGLE
250            case kANGLE_DeviceType:
251#endif
252                break;
253            case kGPU_DeviceType:
254            case kNullGPU_DeviceType:
255                if (fCurContext) {
256                    canvas->setDevice(new SkGpuDevice(fCurContext,
257                                                    fCurRenderTarget))->unref();
258                } else {
259                    return false;
260                }
261                break;
262            default:
263                SkASSERT(false);
264                return false;
265        }
266        return true;
267    }
268
269    virtual void publishCanvas(SampleWindow::DeviceType dType,
270                               SkCanvas* canvas,
271                               SampleWindow* win) {
272        if (fCurContext) {
273            // in case we have queued drawing calls
274            fCurContext->flush();
275
276            if (kGPU_DeviceType != dType && kNullGPU_DeviceType != dType) {
277                // need to send the raster bits to the (gpu) window
278                fCurContext->setRenderTarget(fCurRenderTarget);
279                const SkBitmap& bm = win->getBitmap();
280                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
281                                             kSkia8888_PM_GrPixelConfig,
282                                             bm.getPixels(),
283                                             bm.rowBytes());
284            }
285        }
286
287        win->present();
288    }
289
290    virtual void windowSizeChanged(SampleWindow* win) {
291
292        if (fCurContext) {
293            win->attach(fBackend, fMSAASampleCount);
294
295            GrPlatformRenderTargetDesc desc;
296            desc.fWidth = SkScalarRound(win->width());
297            desc.fHeight = SkScalarRound(win->height());
298            desc.fConfig = kSkia8888_PM_GrPixelConfig;
299            GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
300            GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
301            GrGLint buffer;
302            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
303            desc.fRenderTargetHandle = buffer;
304
305            SkSafeUnref(fCurRenderTarget);
306            fCurRenderTarget = fCurContext->createPlatformRenderTarget(desc);
307        }
308    }
309
310    virtual GrContext* getGrContext() {
311        return fCurContext;
312    }
313
314    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
315        return fCurRenderTarget;
316    }
317
318private:
319    GrContext*              fCurContext;
320    const GrGLInterface*    fCurIntf;
321    GrRenderTarget*         fCurRenderTarget;
322
323    SkOSWindow::SkBackEndTypes fBackend;
324    int fMSAASampleCount;
325
326    typedef SampleWindow::DeviceManager INHERITED;
327};
328
329///////////////
330static const char view_inval_msg[] = "view-inval-msg";
331
332void SampleWindow::postInvalDelay() {
333    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
334}
335
336static bool isInvalEvent(const SkEvent& evt) {
337    return evt.isType(view_inval_msg);
338}
339//////////////////
340
341SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
342    : fCreateFunc(func) {
343}
344
345SkView* SkFuncViewFactory::operator() () const {
346    return (*fCreateFunc)();
347}
348
349#include "GMSampleView.h"
350
351SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
352    : fFunc(func) {
353}
354
355SkView* SkGMSampleViewFactory::operator() () const {
356    return new GMSampleView(fFunc(NULL));
357}
358
359SkViewRegister* SkViewRegister::gHead;
360SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
361    fFact->ref();
362    fChain = gHead;
363    gHead = this;
364}
365
366SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
367    fFact = new SkFuncViewFactory(func);
368    fChain = gHead;
369    gHead = this;
370}
371
372SkViewRegister::SkViewRegister(GMFactoryFunc func) {
373    fFact = new SkGMSampleViewFactory(func);
374    fChain = gHead;
375    gHead = this;
376}
377
378class AutoUnrefArray {
379public:
380    AutoUnrefArray() {}
381    ~AutoUnrefArray() {
382        int count = fObjs.count();
383        for (int i = 0; i < count; ++i) {
384            fObjs[i]->unref();
385        }
386    }
387    SkRefCnt*& push_back() { return *fObjs.append(); }
388
389private:
390    SkTDArray<SkRefCnt*> fObjs;
391};
392
393// registers GMs as Samples
394// This can't be performed during static initialization because it could be
395// run before GMRegistry has been fully built.
396void SkGMRegistyToSampleRegistry() {
397    static bool gOnce;
398    static AutoUnrefArray fRegisters;
399
400    if (!gOnce) {
401        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
402        while (gmreg) {
403            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
404            gmreg = gmreg->next();
405        }
406        gOnce = true;
407    }
408}
409
410#if 0
411#include <CoreFoundation/CoreFoundation.h>
412#include <CoreFoundation/CFURLAccess.h>
413
414static void testpdf() {
415    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
416                                                 kCFStringEncodingUTF8);
417    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
418                                              kCFURLPOSIXPathStyle,
419                                              false);
420    CFRelease(path);
421    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
422    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
423    CFRelease(url);
424
425    CGContextBeginPage(cg, &box);
426    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
427    CGContextFillEllipseInRect(cg, r);
428    CGContextEndPage(cg);
429    CGContextRelease(cg);
430
431    if (false) {
432        SkBitmap bm;
433        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
434        bm.allocPixels();
435        bm.eraseColor(0);
436
437        SkCanvas canvas(bm);
438
439    }
440}
441#endif
442
443//////////////////////////////////////////////////////////////////////////////
444
445enum FlipAxisEnum {
446    kFlipAxis_X = (1 << 0),
447    kFlipAxis_Y = (1 << 1)
448};
449
450#include "SkDrawFilter.h"
451
452class FlagsDrawFilter : public SkDrawFilter {
453public:
454    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
455                    SkOSMenu::TriState hinting) :
456        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
457
458    virtual void filter(SkPaint* paint, Type t) {
459        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
460            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
461        }
462        if (SkOSMenu::kMixedState != fAAState) {
463            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
464        }
465        if (SkOSMenu::kMixedState != fFilterState) {
466            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
467        }
468        if (SkOSMenu::kMixedState != fHintingState) {
469            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
470                              SkPaint::kNormal_Hinting :
471                              SkPaint::kSlight_Hinting);
472        }
473    }
474
475private:
476    SkOSMenu::TriState  fLCDState;
477    SkOSMenu::TriState  fAAState;
478    SkOSMenu::TriState  fFilterState;
479    SkOSMenu::TriState  fHintingState;
480};
481
482//////////////////////////////////////////////////////////////////////////////
483
484#define MAX_ZOOM_LEVEL  8
485#define MIN_ZOOM_LEVEL  -8
486
487static const char gCharEvtName[] = "SampleCode_Char_Event";
488static const char gKeyEvtName[] = "SampleCode_Key_Event";
489static const char gTitleEvtName[] = "SampleCode_Title_Event";
490static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
491static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
492static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
493
494bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
495    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
496        if (outUni) {
497            *outUni = evt.getFast32();
498        }
499        return true;
500    }
501    return false;
502}
503
504bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
505    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
506        if (outKey) {
507            *outKey = (SkKey)evt.getFast32();
508        }
509        return true;
510    }
511    return false;
512}
513
514bool SampleCode::TitleQ(const SkEvent& evt) {
515    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
516}
517
518void SampleCode::TitleR(SkEvent* evt, const char title[]) {
519    SkASSERT(evt && TitleQ(*evt));
520    evt->setString(gTitleEvtName, title);
521}
522
523bool SampleCode::RequestTitle(SkView* view, SkString* title) {
524    SkEvent evt(gTitleEvtName);
525    if (view->doQuery(&evt)) {
526        title->set(evt.findString(gTitleEvtName));
527        return true;
528    }
529    return false;
530}
531
532bool SampleCode::PrefSizeQ(const SkEvent& evt) {
533    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
534}
535
536void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
537    SkASSERT(evt && PrefSizeQ(*evt));
538    SkScalar size[2];
539    size[0] = width;
540    size[1] = height;
541    evt->setScalars(gPrefSizeEvtName, 2, size);
542}
543
544bool SampleCode::FastTextQ(const SkEvent& evt) {
545    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
546}
547
548///////////////////////////////////////////////////////////////////////////////
549
550static SkMSec gAnimTime;
551static SkMSec gAnimTimePrev;
552
553SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
554SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
555SkScalar SampleCode::GetAnimSecondsDelta() {
556    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
557}
558
559SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
560    // since gAnimTime can be up to 32 bits, we can't convert it to a float
561    // or we'll lose the low bits. Hence we use doubles for the intermediate
562    // calculations
563    double seconds = (double)gAnimTime / 1000.0;
564    double value = SkScalarToDouble(speed) * seconds;
565    if (period) {
566        value = ::fmod(value, SkScalarToDouble(period));
567    }
568    return SkDoubleToScalar(value);
569}
570
571SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
572                                      SkScalar periodInSec,
573                                      SkScalar phaseInSec) {
574    if (!periodInSec) {
575        return 0;
576    }
577    double t = (double)gAnimTime / 1000.0 + phaseInSec;
578    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
579    amplitude = SK_ScalarHalf * amplitude;
580    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
581}
582
583GrContext* SampleCode::GetGr() {
584    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
585}
586
587// some GMs rely on having a skiagm::GetGr function defined
588namespace skiagm {
589    GrContext* GetGr() { return SampleCode::GetGr(); }
590}
591
592//////////////////////////////////////////////////////////////////////////////
593
594static SkView* curr_view(SkWindow* wind) {
595    SkView::F2BIter iter(wind);
596    return iter.next();
597}
598
599static bool curr_title(SkWindow* wind, SkString* title) {
600    SkView* view = curr_view(wind);
601    if (view) {
602        SkEvent evt(gTitleEvtName);
603        if (view->doQuery(&evt)) {
604            title->set(evt.findString(gTitleEvtName));
605            return true;
606        }
607    }
608    return false;
609}
610
611void SampleWindow::setZoomCenter(float x, float y)
612{
613    fZoomCenterX = SkFloatToScalar(x);
614    fZoomCenterY = SkFloatToScalar(y);
615}
616
617bool SampleWindow::zoomIn()
618{
619    // Arbitrarily decided
620    if (fFatBitsScale == 25) return false;
621    fFatBitsScale++;
622    this->inval(NULL);
623    return true;
624}
625
626bool SampleWindow::zoomOut()
627{
628    if (fFatBitsScale == 1) return false;
629    fFatBitsScale--;
630    this->inval(NULL);
631    return true;
632}
633
634void SampleWindow::updatePointer(int x, int y)
635{
636    fMouseX = x;
637    fMouseY = y;
638    if (fShowZoomer) {
639        this->inval(NULL);
640    }
641}
642
643static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
644    static const SampleWindow::DeviceType gCT[] = {
645        SampleWindow::kPicture_DeviceType,
646        SampleWindow::kGPU_DeviceType,
647#if SK_ANGLE
648        SampleWindow::kANGLE_DeviceType,
649#endif
650        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
651        SampleWindow::kRaster_DeviceType
652    };
653    return gCT[ct];
654}
655
656static void usage(const char * argv0) {
657    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount]\n", argv0);
658    SkDebugf("    sampleName: sample at which to start.\n");
659    SkDebugf("    resourcePath: directory that stores image resources.\n");
660    SkDebugf("    msaa: request multisampling with the given sample count.\n");
661}
662
663SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
664    : INHERITED(hwnd)
665    , fDevManager(NULL) {
666
667    SkGMRegistyToSampleRegistry();
668    {
669        const SkViewRegister* reg = SkViewRegister::Head();
670        while (reg) {
671            *fSamples.append() = reg->factory();
672            reg = reg->next();
673        }
674    }
675
676    const char* resourcePath = NULL;
677    fCurrIndex = -1;
678    fMSAASampleCount = 0;
679
680    const char* const commandName = argv[0];
681    char* const* stop = argv + argc;
682    for (++argv; argv < stop; ++argv) {
683        if (strcmp(*argv, "-i") == 0) {
684            argv++;
685            if (argv < stop && **argv) {
686                resourcePath = *argv;
687            }
688        } else if (strcmp(*argv, "--slide") == 0) {
689            argv++;
690            if (argv < stop && **argv) {
691                fCurrIndex = findByTitle(*argv);
692                if (fCurrIndex < 0) {
693                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
694                    listTitles();
695                }
696            }
697        } else if (strcmp(*argv, "--msaa") == 0) {
698            ++argv;
699            if (argv < stop && **argv) {
700                fMSAASampleCount = atoi(*argv);
701            }
702        } else if (strcmp(*argv, "--list") == 0) {
703            listTitles();
704        }
705        else {
706            usage(commandName);
707        }
708    }
709
710    if (fCurrIndex < 0) {
711        SkString title;
712        if (readTitleFromPrefs(&title)) {
713            fCurrIndex = findByTitle(title.c_str());
714        }
715    }
716
717    if (fCurrIndex < 0) {
718        fCurrIndex = 0;
719    }
720
721    gSampleWindow = this;
722
723#ifdef  PIPE_FILE
724    //Clear existing file or create file if it doesn't exist
725    FILE* f = fopen(FILE_PATH, "wb");
726    fclose(f);
727#endif
728
729    fPicture = NULL;
730
731    fDeviceType = kRaster_DeviceType;
732
733#if DEFAULT_TO_GPU
734    fDeviceType = kGPU_DeviceType;
735#endif
736#if SK_ANGLE && DEFAULT_TO_ANGLE
737    fDeviceType = kANGLE_DeviceType;
738#endif
739
740    fUseClip = false;
741    fNClip = false;
742    fAnimating = false;
743    fRotate = false;
744    fPerspAnim = false;
745    fPerspAnimTime = 0;
746    fScale = false;
747    fRequestGrabImage = false;
748    fUsePipe = false;
749    fMeasureFPS = false;
750    fLCDState = SkOSMenu::kMixedState;
751    fAAState = SkOSMenu::kMixedState;
752    fFilterState = SkOSMenu::kMixedState;
753    fHintingState = SkOSMenu::kMixedState;
754    fFlipAxis = 0;
755    fScrollTestX = fScrollTestY = 0;
756
757    fMouseX = fMouseY = 0;
758    fFatBitsScale = 8;
759    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
760    fShowZoomer = false;
761
762    fZoomLevel = 0;
763    fZoomScale = SK_Scalar1;
764
765    fMagnify = false;
766    fDebugger = false;
767
768    fSaveToPdf = false;
769    fPdfCanvas = NULL;
770
771    fTransitionNext = 6;
772    fTransitionPrev = 2;
773
774    int sinkID = this->getSinkID();
775    fAppMenu = new SkOSMenu;
776    fAppMenu->setTitle("Global Settings");
777    int itemID;
778
779    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
780                                "Raster", "Picture", "OpenGL",
781#if SK_ANGLE
782                                "ANGLE",
783#endif
784                                NULL);
785    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
786    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
787    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
788    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
789    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
790    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
791    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
792    itemID = fAppMenu->appendTriState("Hinting", "Hinting", sinkID, fHintingState);
793    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
794    fUsePipeMenuItemID = fAppMenu->appendSwitch("Pipe", "Pipe" , sinkID, fUsePipe);
795    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'p');
796#ifdef DEBUGGER
797    itemID = fAppMenu->appendSwitch("Debugger", "Debugger", sinkID, fDebugger);
798    fAppMenu->assignKeyEquivalentToItem(itemID, 'q');
799#endif
800    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
801    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
802    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
803    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
804    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
805    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
806    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
807    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
808    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
809    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
810    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
811    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
812    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
813                                fTransitionNext, "Up", "Up and Right", "Right",
814                                "Down and Right", "Down", "Down and Left",
815                                "Left", "Up and Left", NULL);
816    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
817    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
818                                fTransitionPrev, "Up", "Up and Right", "Right",
819                                "Down and Right", "Down", "Down and Left",
820                                "Left", "Up and Left", NULL);
821    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
822    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
823    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
824
825    this->addMenu(fAppMenu);
826    fSlideMenu = new SkOSMenu;
827    this->addMenu(fSlideMenu);
828
829//    this->setConfig(SkBitmap::kRGB_565_Config);
830    this->setConfig(SkBitmap::kARGB_8888_Config);
831    this->setVisibleP(true);
832    this->setClipToBounds(false);
833
834    skiagm::GM::SetResourcePath(resourcePath);
835
836    this->loadView((*fSamples[fCurrIndex])());
837
838    fPDFData = NULL;
839
840    if (NULL == devManager) {
841        fDevManager = new DefaultDeviceManager();
842    } else {
843        devManager->ref();
844        fDevManager = devManager;
845    }
846    fDevManager->setUpBackend(this, fMSAASampleCount);
847
848    // If another constructor set our dimensions, ensure that our
849    // onSizeChange gets called.
850    if (this->height() && this->width()) {
851        this->onSizeChange();
852    }
853
854    // can't call this synchronously, since it may require a subclass to
855    // to implement, or the caller may need us to have returned from the
856    // constructor first. Hence we post an event to ourselves.
857//    this->updateTitle();
858    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
859}
860
861SampleWindow::~SampleWindow() {
862    delete fPicture;
863    delete fPdfCanvas;
864    fTypeface->unref();
865
866    SkSafeUnref(fDevManager);
867}
868
869int SampleWindow::findByTitle(const char title[]) {
870    int i, count = fSamples.count();
871    for (i = 0; i < count; i++) {
872        if (getSampleTitle(i).equals(title)) {
873            return i;
874        }
875    }
876    return -1;
877}
878
879void SampleWindow::listTitles() {
880    int count = fSamples.count();
881    SkDebugf("All Slides:\n");
882    for (int i = 0; i < count; i++) {
883        SkDebugf("    %s\n", getSampleTitle(i).c_str());
884    }
885}
886
887static SkBitmap capture_bitmap(SkCanvas* canvas) {
888    SkBitmap bm;
889    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
890    src.copyTo(&bm, src.config());
891    return bm;
892}
893
894static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
895                        SkBitmap* diff) {
896    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
897
898    SkAutoLockPixels alp0(src);
899    SkAutoLockPixels alp1(orig);
900    for (int y = 0; y < src.height(); y++) {
901        const void* srcP = src.getAddr(0, y);
902        const void* origP = orig.getAddr(0, y);
903        size_t bytes = src.width() * src.bytesPerPixel();
904        if (memcmp(srcP, origP, bytes)) {
905            SkDebugf("---------- difference on line %d\n", y);
906            return true;
907        }
908    }
909    return false;
910}
911
912static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
913{
914    SkColor desiredColor = paint.getColor();
915    paint.setColor(SK_ColorWHITE);
916    const char* c_str = string.c_str();
917    size_t size = string.size();
918    SkRect bounds;
919    paint.measureText(c_str, size, &bounds);
920    bounds.offset(left, top);
921    SkScalar inset = SkIntToScalar(-2);
922    bounds.inset(inset, inset);
923    canvas->drawRect(bounds, paint);
924    if (desiredColor != SK_ColorBLACK) {
925        paint.setColor(SK_ColorBLACK);
926        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
927    }
928    paint.setColor(desiredColor);
929    canvas->drawText(c_str, size, left, top, paint);
930}
931
932#define XCLIP_N  8
933#define YCLIP_N  8
934
935void SampleWindow::draw(SkCanvas* canvas) {
936    if (!fDevManager->prepareCanvas(fDeviceType, canvas, this)) {
937        return;
938    }
939    // update the animation time
940    if (!gAnimTimePrev && !gAnimTime) {
941        // first time make delta be 0
942        gAnimTime = SkTime::GetMSecs();
943        gAnimTimePrev = gAnimTime;
944    } else {
945        gAnimTimePrev = gAnimTime;
946        gAnimTime = SkTime::GetMSecs();
947    }
948
949    const SkMatrix& localM = fGesture.localM();
950    if (localM.getType() & SkMatrix::kScale_Mask) {
951        canvas->setExternalMatrix(&localM);
952    }
953    if (fGesture.isActive()) {
954        this->updateMatrix();
955    }
956
957    if (fNClip) {
958        this->INHERITED::draw(canvas);
959        SkBitmap orig = capture_bitmap(canvas);
960
961        const SkScalar w = this->width();
962        const SkScalar h = this->height();
963        const SkScalar cw = w / XCLIP_N;
964        const SkScalar ch = h / YCLIP_N;
965        for (int y = 0; y < YCLIP_N; y++) {
966            SkRect r;
967            r.fTop = y * ch;
968            r.fBottom = (y + 1) * ch;
969            if (y == YCLIP_N - 1) {
970                r.fBottom = h;
971            }
972            for (int x = 0; x < XCLIP_N; x++) {
973                SkAutoCanvasRestore acr(canvas, true);
974                r.fLeft = x * cw;
975                r.fRight = (x + 1) * cw;
976                if (x == XCLIP_N - 1) {
977                    r.fRight = w;
978                }
979                canvas->clipRect(r);
980                this->INHERITED::draw(canvas);
981            }
982        }
983
984        SkBitmap diff;
985        if (bitmap_diff(canvas, orig, &diff)) {
986        }
987    } else {
988        this->INHERITED::draw(canvas);
989    }
990    if (fShowZoomer && !fSaveToPdf) {
991        showZoomer(canvas);
992    }
993    if (fMagnify && !fSaveToPdf) {
994        magnify(canvas);
995    }
996
997    // do this last
998    fDevManager->publishCanvas(fDeviceType, canvas, this);
999}
1000
1001static float clipW = 200;
1002static float clipH = 200;
1003void SampleWindow::magnify(SkCanvas* canvas) {
1004    SkRect r;
1005    int count = canvas->save();
1006
1007    SkMatrix m = canvas->getTotalMatrix();
1008    m.invert(&m);
1009    SkPoint offset, center;
1010    SkScalar mouseX = fMouseX * SK_Scalar1;
1011    SkScalar mouseY = fMouseY * SK_Scalar1;
1012    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1013    m.mapXY(mouseX, mouseY, &center);
1014
1015    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1016    r.offset(offset.fX, offset.fY);
1017
1018    SkPaint paint;
1019    paint.setColor(0xFF66AAEE);
1020    paint.setStyle(SkPaint::kStroke_Style);
1021    paint.setStrokeWidth(10.f * m.getScaleX());
1022    //lense offset
1023    //canvas->translate(0, -250);
1024    canvas->drawRect(r, paint);
1025    canvas->clipRect(r);
1026
1027    m = canvas->getTotalMatrix();
1028    m.setTranslate(-center.fX, -center.fY);
1029    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1030    m.postTranslate(center.fX, center.fY);
1031    canvas->concat(m);
1032
1033    this->INHERITED::draw(canvas);
1034
1035    canvas->restoreToCount(count);
1036}
1037
1038void SampleWindow::showZoomer(SkCanvas* canvas) {
1039        int count = canvas->save();
1040        canvas->resetMatrix();
1041        // Ensure the mouse position is on screen.
1042        int width = SkScalarRound(this->width());
1043        int height = SkScalarRound(this->height());
1044        if (fMouseX >= width) fMouseX = width - 1;
1045        else if (fMouseX < 0) fMouseX = 0;
1046        if (fMouseY >= height) fMouseY = height - 1;
1047        else if (fMouseY < 0) fMouseY = 0;
1048
1049        SkBitmap bitmap = capture_bitmap(canvas);
1050        bitmap.lockPixels();
1051
1052        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1053        int zoomedWidth = (width >> 1) | 1;
1054        int zoomedHeight = (height >> 1) | 1;
1055        SkIRect src;
1056        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1057        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1058        SkRect dest;
1059        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1060        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1061        SkPaint paint;
1062        // Clear the background behind our zoomed in view
1063        paint.setColor(SK_ColorWHITE);
1064        canvas->drawRect(dest, paint);
1065        canvas->drawBitmapRect(bitmap, &src, dest);
1066        paint.setColor(SK_ColorBLACK);
1067        paint.setStyle(SkPaint::kStroke_Style);
1068        // Draw a border around the pixel in the middle
1069        SkRect originalPixel;
1070        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1071        SkMatrix matrix;
1072        SkRect scalarSrc;
1073        scalarSrc.set(src);
1074        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1075        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1076            SkRect pixel;
1077            matrix.mapRect(&pixel, originalPixel);
1078            // TODO Perhaps measure the values and make the outline white if it's "dark"
1079            if (color == SK_ColorBLACK) {
1080                paint.setColor(SK_ColorWHITE);
1081            }
1082            canvas->drawRect(pixel, paint);
1083        }
1084        paint.setColor(SK_ColorBLACK);
1085        // Draw a border around the destination rectangle
1086        canvas->drawRect(dest, paint);
1087        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1088        // Identify the pixel and its color on screen
1089        paint.setTypeface(fTypeface);
1090        paint.setAntiAlias(true);
1091        SkScalar lineHeight = paint.getFontMetrics(NULL);
1092        SkString string;
1093        string.appendf("(%i, %i)", fMouseX, fMouseY);
1094        SkScalar left = dest.fLeft + SkIntToScalar(3);
1095        SkScalar i = SK_Scalar1;
1096        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1097        // Alpha
1098        i += SK_Scalar1;
1099        string.reset();
1100        string.appendf("A: %X", SkColorGetA(color));
1101        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1102        // Red
1103        i += SK_Scalar1;
1104        string.reset();
1105        string.appendf("R: %X", SkColorGetR(color));
1106        paint.setColor(SK_ColorRED);
1107        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1108        // Green
1109        i += SK_Scalar1;
1110        string.reset();
1111        string.appendf("G: %X", SkColorGetG(color));
1112        paint.setColor(SK_ColorGREEN);
1113        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1114        // Blue
1115        i += SK_Scalar1;
1116        string.reset();
1117        string.appendf("B: %X", SkColorGetB(color));
1118        paint.setColor(SK_ColorBLUE);
1119        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1120        canvas->restoreToCount(count);
1121}
1122
1123void SampleWindow::onDraw(SkCanvas* canvas) {
1124}
1125
1126#include "SkColorPriv.h"
1127
1128static void reverseRedAndBlue(const SkBitmap& bm) {
1129    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1130    uint8_t* p = (uint8_t*)bm.getPixels();
1131    uint8_t* stop = p + bm.getSize();
1132    while (p < stop) {
1133        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1134        unsigned scale = SkAlpha255To256(p[3]);
1135        unsigned r = p[2];
1136        unsigned b = p[0];
1137        p[0] = SkAlphaMul(r, scale);
1138        p[1] = SkAlphaMul(p[1], scale);
1139        p[2] = SkAlphaMul(b, scale);
1140        p += 4;
1141    }
1142}
1143
1144void SampleWindow::saveToPdf()
1145{
1146    fSaveToPdf = true;
1147    this->inval(NULL);
1148}
1149
1150SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1151    if (fSaveToPdf) {
1152        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1153        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1154        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1155                canvas->getTotalMatrix());
1156        fPdfCanvas = new SkCanvas(pdfDevice);
1157        pdfDevice->unref();
1158        canvas = fPdfCanvas;
1159    } else {
1160        switch (fDeviceType) {
1161            case kRaster_DeviceType:
1162                // fallthrough
1163            case kGPU_DeviceType:
1164                // fallthrough
1165#if SK_ANGLE
1166            case kANGLE_DeviceType:
1167#endif
1168                canvas = this->INHERITED::beforeChildren(canvas);
1169                break;
1170            case kPicture_DeviceType:
1171                fPicture = new SkPicture;
1172                canvas = fPicture->beginRecording(9999, 9999);
1173                break;
1174            case kNullGPU_DeviceType:
1175                break;
1176            default:
1177                SkASSERT(false);
1178                break;
1179        }
1180    }
1181
1182    if (fUseClip) {
1183        canvas->drawColor(0xFFFF88FF);
1184        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1185    }
1186
1187    return canvas;
1188}
1189
1190static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1191                      const SkRegion& rgn) {
1192    SkCanvas    canvas(bm);
1193    SkRegion    inval(rgn);
1194
1195    inval.translate(r.fLeft, r.fTop);
1196    canvas.clipRegion(inval);
1197    canvas.drawColor(0xFFFF8080);
1198}
1199#include "SkData.h"
1200void SampleWindow::afterChildren(SkCanvas* orig) {
1201    if (fSaveToPdf) {
1202        fSaveToPdf = false;
1203        if (fShowZoomer) {
1204            showZoomer(fPdfCanvas);
1205        }
1206        SkString name;
1207        name.printf("%s.pdf", this->getTitle());
1208        SkPDFDocument doc;
1209        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1210        doc.appendPage(device);
1211#ifdef SK_BUILD_FOR_ANDROID
1212        name.prepend("/sdcard/");
1213#endif
1214
1215#ifdef SK_BUILD_FOR_IOS
1216        SkDynamicMemoryWStream mstream;
1217        doc.emitPDF(&mstream);
1218        fPDFData = mstream.copyToData();
1219#endif
1220        SkFILEWStream stream(name.c_str());
1221        if (stream.isValid()) {
1222            doc.emitPDF(&stream);
1223            const char* desc = "File saved from Skia SampleApp";
1224            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1225        }
1226
1227        delete fPdfCanvas;
1228        fPdfCanvas = NULL;
1229
1230        // We took over the draw calls in order to create the PDF, so we need
1231        // to redraw.
1232        this->inval(NULL);
1233        return;
1234    }
1235
1236    if (fRequestGrabImage) {
1237        fRequestGrabImage = false;
1238
1239        SkDevice* device = orig->getDevice();
1240        SkBitmap bmp;
1241        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1242            static int gSampleGrabCounter;
1243            SkString name;
1244            name.printf("sample_grab_%d", gSampleGrabCounter++);
1245            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1246                                       SkImageEncoder::kPNG_Type, 100);
1247        }
1248    }
1249
1250    if (kPicture_DeviceType == fDeviceType) {
1251        if (true) {
1252            SkPicture* pict = new SkPicture(*fPicture);
1253            fPicture->unref();
1254            this->installDrawFilter(orig);
1255            orig->drawPicture(*pict);
1256            pict->unref();
1257        } else if (true) {
1258            SkDynamicMemoryWStream ostream;
1259            fPicture->serialize(&ostream);
1260            fPicture->unref();
1261
1262            SkAutoDataUnref data(ostream.copyToData());
1263            SkMemoryStream istream(data.data(), data.size());
1264            SkPicture pict(&istream);
1265            orig->drawPicture(pict);
1266        } else {
1267            fPicture->draw(orig);
1268            fPicture->unref();
1269        }
1270        fPicture = NULL;
1271    }
1272
1273    // Do this after presentGL and other finishing, rather than in afterChild
1274    if (fMeasureFPS && fMeasureFPS_Time) {
1275        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
1276        this->updateTitle();
1277        this->postInvalDelay();
1278    }
1279
1280    //    if ((fScrollTestX | fScrollTestY) != 0)
1281    if (false) {
1282        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1283        int dx = fScrollTestX * 7;
1284        int dy = fScrollTestY * 7;
1285        SkIRect r;
1286        SkRegion inval;
1287
1288        r.set(50, 50, 50+100, 50+100);
1289        bm.scrollRect(&r, dx, dy, &inval);
1290        paint_rgn(bm, r, inval);
1291    }
1292#ifdef DEBUGGER
1293    SkView* curr = curr_view(this);
1294    if (fDebugger && !is_debugger(curr) && !is_transition(curr) && !is_overview(curr)) {
1295        //Stop Pipe when fDebugger is active
1296        fUsePipe = false;
1297        (void)SampleView::SetUsePipe(curr, false);
1298        fAppMenu->getItemByID(fUsePipeMenuItemID)->setBool(fUsePipe);
1299        this->onUpdateMenu(fAppMenu);
1300
1301        //Reset any transformations
1302        fGesture.stop();
1303        fGesture.reset();
1304
1305        this->loadView(create_debugger(gTempDataStore.begin(),
1306                                       gTempDataStore.count()));
1307    }
1308#endif
1309}
1310
1311void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1312    if (fScale) {
1313        SkScalar scale = SK_Scalar1 * 7 / 10;
1314        SkScalar cx = this->width() / 2;
1315        SkScalar cy = this->height() / 2;
1316        canvas->translate(cx, cy);
1317        canvas->scale(scale, scale);
1318        canvas->translate(-cx, -cy);
1319    }
1320    if (fRotate) {
1321        SkScalar cx = this->width() / 2;
1322        SkScalar cy = this->height() / 2;
1323        canvas->translate(cx, cy);
1324        canvas->rotate(SkIntToScalar(30));
1325        canvas->translate(-cx, -cy);
1326    }
1327    if (fPerspAnim) {
1328        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1329
1330        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1331        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1332        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1333        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1334            t = gAnimPeriod - t;
1335        }
1336        t = 2 * t - gAnimPeriod;
1337        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1338        SkMatrix m;
1339        m.reset();
1340        m.setPerspY(t);
1341        canvas->concat(m);
1342    }
1343
1344    this->installDrawFilter(canvas);
1345
1346    if (fMeasureFPS) {
1347        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
1348        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1349            fMeasureFPS_Time = SkTime::GetMSecs();
1350        }
1351    } else {
1352        (void)SampleView::SetRepeatDraw(child, 1);
1353    }
1354    if (fPerspAnim) {
1355        this->inval(NULL);
1356    }
1357    //(void)SampleView::SetUsePipe(child, fUsePipe);
1358}
1359
1360void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1361    canvas->setDrawFilter(NULL);
1362}
1363
1364static SkBitmap::Config gConfigCycle[] = {
1365    SkBitmap::kNo_Config,           // none -> none
1366    SkBitmap::kNo_Config,           // a1 -> none
1367    SkBitmap::kNo_Config,           // a8 -> none
1368    SkBitmap::kNo_Config,           // index8 -> none
1369    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1370    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1371    SkBitmap::kRGB_565_Config       // 8888 -> 565
1372};
1373
1374static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1375    return gConfigCycle[c];
1376}
1377
1378void SampleWindow::changeZoomLevel(float delta) {
1379    fZoomLevel += SkFloatToScalar(delta);
1380    if (fZoomLevel > 0) {
1381        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1382        fZoomScale = fZoomLevel + SK_Scalar1;
1383    } else if (fZoomLevel < 0) {
1384        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1385        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1386    } else {
1387        fZoomScale = SK_Scalar1;
1388    }
1389    this->updateMatrix();
1390}
1391
1392void SampleWindow::updateMatrix(){
1393    SkMatrix m;
1394    m.reset();
1395    if (fZoomLevel) {
1396        SkPoint center;
1397        //m = this->getLocalMatrix();//.invert(&m);
1398        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1399        SkScalar cx = center.fX;
1400        SkScalar cy = center.fY;
1401
1402        m.setTranslate(-cx, -cy);
1403        m.postScale(fZoomScale, fZoomScale);
1404        m.postTranslate(cx, cy);
1405    }
1406
1407    if (fFlipAxis) {
1408        m.preTranslate(fZoomCenterX, fZoomCenterY);
1409        if (fFlipAxis & kFlipAxis_X) {
1410            m.preScale(-SK_Scalar1, SK_Scalar1);
1411        }
1412        if (fFlipAxis & kFlipAxis_Y) {
1413            m.preScale(SK_Scalar1, -SK_Scalar1);
1414        }
1415        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1416        //canvas->concat(m);
1417    }
1418    // Apply any gesture matrix
1419    m.preConcat(fGesture.localM());
1420    m.preConcat(fGesture.globalM());
1421
1422    this->setLocalMatrix(m);
1423
1424    this->updateTitle();
1425    this->inval(NULL);
1426}
1427bool SampleWindow::previousSample() {
1428    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1429    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1430                                     fTransitionPrev));
1431    return true;
1432}
1433
1434bool SampleWindow::nextSample() {
1435    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1436    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1437                                     fTransitionNext));
1438    return true;
1439}
1440
1441bool SampleWindow::goToSample(int i) {
1442    fCurrIndex = (i) % fSamples.count();
1443    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1444    return true;
1445}
1446
1447SkString SampleWindow::getSampleTitle(int i) {
1448    SkView* view = (*fSamples[i])();
1449    SkString title;
1450    SampleCode::RequestTitle(view, &title);
1451    view->unref();
1452    return title;
1453}
1454
1455int SampleWindow::sampleCount() {
1456    return fSamples.count();
1457}
1458
1459void SampleWindow::showOverview() {
1460    this->loadView(create_transition(curr_view(this),
1461                                     create_overview(fSamples.count(), fSamples.begin()),
1462                                     4));
1463}
1464
1465void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1466    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1467                                              fFilterState, fHintingState))->unref();
1468}
1469
1470void SampleWindow::postAnimatingEvent() {
1471    if (fAnimating) {
1472        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1473    }
1474}
1475
1476bool SampleWindow::onEvent(const SkEvent& evt) {
1477    if (evt.isType(gUpdateWindowTitleEvtName)) {
1478        this->updateTitle();
1479        return true;
1480    }
1481    if (evt.isType(ANIMATING_EVENTTYPE)) {
1482        if (fAnimating) {
1483            this->nextSample();
1484            this->postAnimatingEvent();
1485        }
1486        return true;
1487    }
1488    if (evt.isType("replace-transition-view")) {
1489        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1490        return true;
1491    }
1492    if (evt.isType("set-curr-index")) {
1493        this->goToSample(evt.getFast32());
1494        return true;
1495    }
1496    if (isInvalEvent(evt)) {
1497        this->inval(NULL);
1498        return true;
1499    }
1500    int selected = -1;
1501    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1502        this->setDeviceType((DeviceType)selected);
1503        return true;
1504    }
1505    if (SkOSMenu::FindSwitchState(evt, "Pipe", &fUsePipe)) {
1506#ifdef PIPE_NET
1507        if (!fUsePipe)
1508            gServer.disconnectAll();
1509#endif
1510        (void)SampleView::SetUsePipe(curr_view(this), fUsePipe);
1511        this->updateTitle();
1512        this->inval(NULL);
1513        return true;
1514    }
1515    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1516        this->toggleSlideshow();
1517        return true;
1518    }
1519    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1520        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1521        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1522        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1523        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1524        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1525        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1526        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1527        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1528        this->inval(NULL);
1529        this->updateTitle();
1530        return true;
1531    }
1532    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1533        fFlipAxis ^= kFlipAxis_X;
1534        this->updateMatrix();
1535        return true;
1536    }
1537    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1538        fFlipAxis ^= kFlipAxis_Y;
1539        this->updateMatrix();
1540        return true;
1541    }
1542    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1543        this->saveToPdf();
1544        return true;
1545    }
1546#ifdef DEBUGGER
1547    if (SkOSMenu::FindSwitchState(evt, "Debugger", &fDebugger)) {
1548        if (fDebugger) {
1549            fUsePipe = true;
1550            (void)SampleView::SetUsePipe(curr_view(this), true);
1551        } else {
1552            this->loadView(fSamples[fCurrIndex]());
1553        }
1554        this->inval(NULL);
1555        return true;
1556    }
1557#endif
1558    return this->INHERITED::onEvent(evt);
1559}
1560
1561bool SampleWindow::onQuery(SkEvent* query) {
1562    if (query->isType("get-slide-count")) {
1563        query->setFast32(fSamples.count());
1564        return true;
1565    }
1566    if (query->isType("get-slide-title")) {
1567        SkView* view = (*fSamples[query->getFast32()])();
1568        SkEvent evt(gTitleEvtName);
1569        if (view->doQuery(&evt)) {
1570            query->setString("title", evt.findString(gTitleEvtName));
1571        }
1572        SkSafeUnref(view);
1573        return true;
1574    }
1575    if (query->isType("use-fast-text")) {
1576        SkEvent evt(gFastTextEvtName);
1577        return curr_view(this)->doQuery(&evt);
1578    }
1579    if (query->isType("ignore-window-bitmap")) {
1580        query->setFast32(this->getGrContext() != NULL);
1581        return true;
1582    }
1583    return this->INHERITED::onQuery(query);
1584}
1585
1586static void cleanup_for_filename(SkString* name) {
1587    char* str = name->writable_str();
1588    for (size_t i = 0; i < name->size(); i++) {
1589        switch (str[i]) {
1590            case ':': str[i] = '-'; break;
1591            case '/': str[i] = '-'; break;
1592            case ' ': str[i] = '_'; break;
1593            default: break;
1594        }
1595    }
1596}
1597
1598bool SampleWindow::onHandleChar(SkUnichar uni) {
1599    {
1600        SkView* view = curr_view(this);
1601        if (view) {
1602            SkEvent evt(gCharEvtName);
1603            evt.setFast32(uni);
1604            if (view->doQuery(&evt)) {
1605                return true;
1606            }
1607        }
1608    }
1609
1610    int dx = 0xFF;
1611    int dy = 0xFF;
1612
1613    switch (uni) {
1614        case '5': dx =  0; dy =  0; break;
1615        case '8': dx =  0; dy = -1; break;
1616        case '6': dx =  1; dy =  0; break;
1617        case '2': dx =  0; dy =  1; break;
1618        case '4': dx = -1; dy =  0; break;
1619        case '7': dx = -1; dy = -1; break;
1620        case '9': dx =  1; dy = -1; break;
1621        case '3': dx =  1; dy =  1; break;
1622        case '1': dx = -1; dy =  1; break;
1623
1624        default:
1625            break;
1626    }
1627
1628    if (0xFF != dx && 0xFF != dy) {
1629        if ((dx | dy) == 0) {
1630            fScrollTestX = fScrollTestY = 0;
1631        } else {
1632            fScrollTestX += dx;
1633            fScrollTestY += dy;
1634        }
1635        this->inval(NULL);
1636        return true;
1637    }
1638
1639    switch (uni) {
1640        case 'f':
1641            // only
1642            toggleFPS();
1643            break;
1644        case 'g':
1645            fRequestGrabImage = true;
1646            this->inval(NULL);
1647            break;
1648        case 'i':
1649            this->zoomIn();
1650            break;
1651        case 'o':
1652            this->zoomOut();
1653            break;
1654        case 'r':
1655            fRotate = !fRotate;
1656            this->inval(NULL);
1657            this->updateTitle();
1658            return true;
1659        case 'k':
1660            fPerspAnim = !fPerspAnim;
1661            this->inval(NULL);
1662            this->updateTitle();
1663            return true;
1664        case '\\':
1665            this->setDeviceType(kNullGPU_DeviceType);
1666            this->inval(NULL);
1667            this->updateTitle();
1668            return true;
1669        case 'p':
1670            {
1671                GrContext* grContext = this->getGrContext();
1672                if (grContext) {
1673                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1674                    grContext->freeGpuResources();
1675                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1676                             cacheBytes);
1677                }
1678            }
1679            return true;
1680        case 's':
1681            fScale = !fScale;
1682            this->inval(NULL);
1683            this->updateTitle();
1684            return true;
1685        default:
1686            break;
1687    }
1688
1689    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1690        this->onUpdateMenu(fAppMenu);
1691        this->onUpdateMenu(fSlideMenu);
1692        return true;
1693    }
1694    return this->INHERITED::onHandleChar(uni);
1695}
1696
1697void SampleWindow::setDeviceType(DeviceType type) {
1698    if (type == fDeviceType)
1699        return;
1700
1701    fDevManager->tearDownBackend(this);
1702
1703    fDeviceType = type;
1704
1705    fDevManager->setUpBackend(this, fMSAASampleCount);
1706
1707    this->updateTitle();
1708    this->inval(NULL);
1709}
1710
1711void SampleWindow::toggleSlideshow() {
1712    fAnimating = !fAnimating;
1713    this->postAnimatingEvent();
1714    this->updateTitle();
1715}
1716
1717void SampleWindow::toggleRendering() {
1718    this->setDeviceType(cycle_devicetype(fDeviceType));
1719    this->updateTitle();
1720    this->inval(NULL);
1721}
1722
1723void SampleWindow::toggleFPS() {
1724    fMeasureFPS = !fMeasureFPS;
1725    this->updateTitle();
1726    this->inval(NULL);
1727}
1728
1729#include "SkDumpCanvas.h"
1730
1731bool SampleWindow::onHandleKey(SkKey key) {
1732    {
1733        SkView* view = curr_view(this);
1734        if (view) {
1735            SkEvent evt(gKeyEvtName);
1736            evt.setFast32(key);
1737            if (view->doQuery(&evt)) {
1738                return true;
1739            }
1740        }
1741    }
1742    switch (key) {
1743        case kRight_SkKey:
1744            if (this->nextSample()) {
1745                return true;
1746            }
1747            break;
1748        case kLeft_SkKey:
1749            toggleRendering();
1750            return true;
1751        case kUp_SkKey:
1752            if (USE_ARROWS_FOR_ZOOM) {
1753                this->changeZoomLevel(1.f);
1754            } else {
1755                fNClip = !fNClip;
1756                this->inval(NULL);
1757                this->updateTitle();
1758            }
1759            return true;
1760        case kDown_SkKey:
1761            if (USE_ARROWS_FOR_ZOOM) {
1762                this->changeZoomLevel(-1.f);
1763            } else {
1764                this->setConfig(cycle_configs(this->getBitmap().config()));
1765                this->updateTitle();
1766            }
1767            return true;
1768        case kOK_SkKey: {
1769            SkString title;
1770            if (curr_title(this, &title)) {
1771                writeTitleToPrefs(title.c_str());
1772            }
1773            return true;
1774        }
1775        case kBack_SkKey:
1776            this->showOverview();
1777            return true;
1778        default:
1779            break;
1780    }
1781    return this->INHERITED::onHandleKey(key);
1782}
1783
1784///////////////////////////////////////////////////////////////////////////////
1785
1786static const char gGestureClickType[] = "GestureClickType";
1787
1788bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1789        void* owner) {
1790    if (Click::kMoved_State == state) {
1791        updatePointer(x, y);
1792    }
1793    int w = SkScalarRound(this->width());
1794    int h = SkScalarRound(this->height());
1795
1796    // check for the resize-box
1797    if (w - x < 16 && h - y < 16) {
1798        return false;   // let the OS handle the click
1799    }
1800    else if (fMagnify) {
1801        //it's only necessary to update the drawing if there's a click
1802        this->inval(NULL);
1803        return false; //prevent dragging while magnify is enabled
1804    }
1805    else {
1806        return this->INHERITED::onDispatchClick(x, y, state, owner);
1807    }
1808}
1809
1810class GestureClick : public SkView::Click {
1811public:
1812    GestureClick(SkView* target) : SkView::Click(target) {
1813        this->setType(gGestureClickType);
1814    }
1815
1816    static bool IsGesture(Click* click) {
1817        return click->isType(gGestureClickType);
1818    }
1819};
1820
1821SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1822    return new GestureClick(this);
1823}
1824
1825bool SampleWindow::onClick(Click* click) {
1826    if (GestureClick::IsGesture(click)) {
1827        float x = static_cast<float>(click->fICurr.fX);
1828        float y = static_cast<float>(click->fICurr.fY);
1829
1830        switch (click->fState) {
1831            case SkView::Click::kDown_State:
1832                fGesture.touchBegin(click->fOwner, x, y);
1833                break;
1834            case SkView::Click::kMoved_State:
1835                fGesture.touchMoved(click->fOwner, x, y);
1836                this->updateMatrix();
1837                break;
1838            case SkView::Click::kUp_State:
1839                fGesture.touchEnd(click->fOwner);
1840                this->updateMatrix();
1841                break;
1842        }
1843        return true;
1844    }
1845    return false;
1846}
1847
1848///////////////////////////////////////////////////////////////////////////////
1849
1850void SampleWindow::loadView(SkView* view) {
1851    SkView::F2BIter iter(this);
1852    SkView* prev = iter.next();
1853    if (prev) {
1854        prev->detachFromParent();
1855    }
1856
1857    view->setVisibleP(true);
1858    view->setClipToBounds(false);
1859    this->attachChildToFront(view)->unref();
1860    view->setSize(this->width(), this->height());
1861
1862    //repopulate the slide menu when a view is loaded
1863    fSlideMenu->reset();
1864#ifdef DEBUGGER
1865    if (!is_debugger(view) && !is_overview(view) && !is_transition(view) && fDebugger) {
1866        //Force Pipe to be on if using debugger
1867        fUsePipe = true;
1868    }
1869#endif
1870    (void)SampleView::SetUsePipe(view, fUsePipe);
1871    if (SampleView::IsSampleView(view))
1872        ((SampleView*)view)->requestMenu(fSlideMenu);
1873    this->onUpdateMenu(fSlideMenu);
1874    this->updateTitle();
1875}
1876
1877static const char* gConfigNames[] = {
1878    "unknown config",
1879    "A1",
1880    "A8",
1881    "Index8",
1882    "565",
1883    "4444",
1884    "8888"
1885};
1886
1887static const char* configToString(SkBitmap::Config c) {
1888    return gConfigNames[c];
1889}
1890
1891static const char* gDeviceTypePrefix[] = {
1892    "raster: ",
1893    "picture: ",
1894    "opengl: ",
1895#if SK_ANGLE
1896    "angle: ",
1897#endif
1898    "null-gl: "
1899};
1900
1901static const bool gDeviceTypeIsGPU[] = {
1902    false,
1903    false,
1904    true,
1905#if SK_ANGLE
1906    true,
1907#endif
1908    true
1909};
1910
1911static const char* trystate_str(SkOSMenu::TriState state,
1912                                const char trueStr[], const char falseStr[]) {
1913    if (SkOSMenu::kOnState == state) {
1914        return trueStr;
1915    } else if (SkOSMenu::kOffState == state) {
1916        return falseStr;
1917    }
1918    return NULL;
1919}
1920
1921void SampleWindow::updateTitle() {
1922    SkView* view = curr_view(this);
1923
1924    SkString title;
1925    if (!curr_title(this, &title)) {
1926        title.set("<unknown>");
1927    }
1928
1929    title.prepend(gDeviceTypePrefix[fDeviceType]);
1930
1931    title.prepend(" ");
1932    title.prepend(configToString(this->getBitmap().config()));
1933
1934    if (fAnimating) {
1935        title.prepend("<A> ");
1936    }
1937    if (fScale) {
1938        title.prepend("<S> ");
1939    }
1940    if (fRotate) {
1941        title.prepend("<R> ");
1942    }
1943    if (fNClip) {
1944        title.prepend("<C> ");
1945    }
1946    if (fPerspAnim) {
1947        title.prepend("<K> ");
1948    }
1949
1950    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
1951    title.prepend(trystate_str(fAAState, "AA ", "aa "));
1952    title.prepend(trystate_str(fFilterState, "H ", "h "));
1953    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
1954    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
1955
1956    if (fZoomLevel) {
1957        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
1958    }
1959
1960    if (fMeasureFPS) {
1961        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
1962    }
1963    if (fUsePipe && SampleView::IsSampleView(view)) {
1964        title.prepend("<P> ");
1965    }
1966    if (SampleView::IsSampleView(view)) {
1967        title.prepend("! ");
1968    }
1969
1970    if (gDeviceTypeIsGPU[fDeviceType] &&
1971        NULL != fDevManager &&
1972        fDevManager->getGrRenderTarget()->numSamples() > 0) {
1973        title.appendf(" [MSAA: %d]",
1974                       fDevManager->getGrRenderTarget()->numSamples());
1975    }
1976
1977    this->setTitle(title.c_str());
1978}
1979
1980void SampleWindow::onSizeChange() {
1981    this->INHERITED::onSizeChange();
1982
1983    SkView::F2BIter iter(this);
1984    SkView* view = iter.next();
1985    view->setSize(this->width(), this->height());
1986
1987    // rebuild our clippath
1988    {
1989        const SkScalar W = this->width();
1990        const SkScalar H = this->height();
1991
1992        fClipPath.reset();
1993#if 0
1994        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
1995            SkRect r;
1996            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
1997            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
1998                fClipPath.addRect(r);
1999        }
2000#else
2001        SkRect r;
2002        r.set(0, 0, W, H);
2003        fClipPath.addRect(r, SkPath::kCCW_Direction);
2004        r.set(W/4, H/4, W*3/4, H*3/4);
2005        fClipPath.addRect(r, SkPath::kCW_Direction);
2006#endif
2007    }
2008
2009    fZoomCenterX = SkScalarHalf(this->width());
2010    fZoomCenterY = SkScalarHalf(this->height());
2011
2012#ifdef SK_BUILD_FOR_ANDROID
2013    // FIXME: The first draw after a size change does not work on Android, so
2014    // we post an invalidate.
2015    this->postInvalDelay();
2016#endif
2017    this->updateTitle();    // to refresh our config
2018    fDevManager->windowSizeChanged(this);
2019}
2020
2021///////////////////////////////////////////////////////////////////////////////
2022
2023static const char is_sample_view_tag[] = "sample-is-sample-view";
2024static const char repeat_count_tag[] = "sample-set-repeat-count";
2025static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2026
2027bool SampleView::IsSampleView(SkView* view) {
2028    SkEvent evt(is_sample_view_tag);
2029    return view->doQuery(&evt);
2030}
2031
2032bool SampleView::SetRepeatDraw(SkView* view, int count) {
2033    SkEvent evt(repeat_count_tag);
2034    evt.setFast32(count);
2035    return view->doEvent(evt);
2036}
2037
2038bool SampleView::SetUsePipe(SkView* view, bool pred) {
2039    SkEvent evt(set_use_pipe_tag);
2040    evt.setFast32(pred);
2041    return view->doEvent(evt);
2042}
2043
2044bool SampleView::onEvent(const SkEvent& evt) {
2045    if (evt.isType(repeat_count_tag)) {
2046        fRepeatCount = evt.getFast32();
2047        return true;
2048    }
2049    if (evt.isType(set_use_pipe_tag)) {
2050        fUsePipe = !!evt.getFast32();
2051        return true;
2052    }
2053    return this->INHERITED::onEvent(evt);
2054}
2055
2056bool SampleView::onQuery(SkEvent* evt) {
2057    if (evt->isType(is_sample_view_tag)) {
2058        return true;
2059    }
2060    return this->INHERITED::onQuery(evt);
2061}
2062
2063#ifdef TEST_GPIPE
2064    #include "SkGPipe.h"
2065
2066class SimplePC : public SkGPipeController {
2067public:
2068    SimplePC(SkCanvas* target);
2069    ~SimplePC();
2070
2071    /**
2072     * User this method to halt/restart pipe
2073     */
2074    void setWriteToPipe(bool writeToPipe) { fWriteToPipe = writeToPipe; }
2075    virtual void* requestBlock(size_t minRequest, size_t* actual);
2076    virtual void notifyWritten(size_t bytes);
2077
2078private:
2079    SkGPipeReader   fReader;
2080    void*           fBlock;
2081    size_t          fBlockSize;
2082    size_t          fBytesWritten;
2083    int             fAtomsWritten;
2084    SkGPipeReader::Status   fStatus;
2085    bool            fWriteToPipe;
2086
2087    size_t        fTotalWritten;
2088};
2089
2090SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2091    fBlock = NULL;
2092    fBlockSize = fBytesWritten = 0;
2093    fStatus = SkGPipeReader::kDone_Status;
2094    fTotalWritten = 0;
2095    fAtomsWritten = 0;
2096    fWriteToPipe = true;
2097}
2098
2099SimplePC::~SimplePC() {
2100//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2101    if (fTotalWritten) {
2102        if (fWriteToPipe) {
2103            SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2104                     fAtomsWritten, fStatus);
2105#ifdef  PIPE_FILE
2106            //File is open in append mode
2107            FILE* f = fopen(FILE_PATH, "ab");
2108            SkASSERT(f != NULL);
2109            fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2110            fclose(f);
2111#endif
2112#ifdef PIPE_NET
2113            if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2114                gServer.acceptConnections();
2115                gServer.writePacket(fBlock, fTotalWritten);
2116            }
2117#endif
2118#ifdef  DEBUGGER
2119            gTempDataStore.reset();
2120            gTempDataStore.append(fTotalWritten, (const char*)fBlock);
2121#endif
2122        }
2123    }
2124    sk_free(fBlock);
2125}
2126
2127void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2128    sk_free(fBlock);
2129
2130    fBlockSize = minRequest * 4;
2131    fBlock = sk_malloc_throw(fBlockSize);
2132    fBytesWritten = 0;
2133    *actual = fBlockSize;
2134    return fBlock;
2135}
2136
2137void SimplePC::notifyWritten(size_t bytes) {
2138    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2139    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2140    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2141    fBytesWritten += bytes;
2142    fTotalWritten += bytes;
2143
2144    fAtomsWritten += 1;
2145}
2146
2147#endif
2148
2149void SampleView::draw(SkCanvas* canvas) {
2150#ifdef TEST_GPIPE
2151    if (fUsePipe) {
2152        SkGPipeWriter writer;
2153        SimplePC controller(canvas);
2154        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2155        canvas = writer.startRecording(&controller, flags);
2156        //Must draw before controller goes out of scope and sends data
2157        this->INHERITED::draw(canvas);
2158        //explicitly end recording to ensure writer is flushed before the memory
2159        //is freed in the deconstructor of the controller
2160        writer.endRecording();
2161        controller.setWriteToPipe(fUsePipe);
2162    }
2163    else
2164        this->INHERITED::draw(canvas);
2165#else
2166    this->INHERITED::draw(canvas);
2167#endif
2168}
2169void SampleView::onDraw(SkCanvas* canvas) {
2170    this->onDrawBackground(canvas);
2171
2172    for (int i = 0; i < fRepeatCount; i++) {
2173        SkAutoCanvasRestore acr(canvas, true);
2174        this->onDrawContent(canvas);
2175    }
2176}
2177
2178void SampleView::onDrawBackground(SkCanvas* canvas) {
2179    canvas->drawColor(fBGColor);
2180}
2181
2182///////////////////////////////////////////////////////////////////////////////
2183
2184template <typename T> void SkTBSort(T array[], int count) {
2185    for (int i = 1; i < count - 1; i++) {
2186        bool didSwap = false;
2187        for (int j = count - 1; j > i; --j) {
2188            if (array[j] < array[j-1]) {
2189                T tmp(array[j-1]);
2190                array[j-1] = array[j];
2191                array[j] = tmp;
2192                didSwap = true;
2193            }
2194        }
2195        if (!didSwap) {
2196            break;
2197        }
2198    }
2199
2200    for (int k = 0; k < count - 1; k++) {
2201        SkASSERT(!(array[k+1] < array[k]));
2202    }
2203}
2204
2205#include "SkRandom.h"
2206
2207static void rand_rect(SkIRect* rect, SkRandom& rand) {
2208    int bits = 8;
2209    int shift = 32 - bits;
2210    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2211              rand.nextU() >> shift, rand.nextU() >> shift);
2212    rect->sort();
2213}
2214
2215static void dumpRect(const SkIRect& r) {
2216    SkDebugf(" { %d, %d, %d, %d },\n",
2217             r.fLeft, r.fTop,
2218             r.fRight, r.fBottom);
2219}
2220
2221static void test_rects(const SkIRect rect[], int count) {
2222    SkRegion rgn0, rgn1;
2223
2224    for (int i = 0; i < count; i++) {
2225        rgn0.op(rect[i], SkRegion::kUnion_Op);
2226     //   dumpRect(rect[i]);
2227    }
2228    rgn1.setRects(rect, count);
2229
2230    if (rgn0 != rgn1) {
2231        SkDebugf("\n");
2232        for (int i = 0; i < count; i++) {
2233            dumpRect(rect[i]);
2234        }
2235        SkDebugf("\n");
2236    }
2237}
2238
2239static void test() {
2240    size_t i;
2241
2242    const SkIRect r0[] = {
2243        { 0, 0, 1, 1 },
2244        { 2, 2, 3, 3 },
2245    };
2246    const SkIRect r1[] = {
2247        { 0, 0, 1, 3 },
2248        { 1, 1, 2, 2 },
2249        { 2, 0, 3, 3 },
2250    };
2251    const SkIRect r2[] = {
2252        { 0, 0, 1, 2 },
2253        { 2, 1, 3, 3 },
2254        { 4, 0, 5, 1 },
2255        { 6, 0, 7, 4 },
2256    };
2257
2258    static const struct {
2259        const SkIRect* fRects;
2260        int            fCount;
2261    } gRecs[] = {
2262        { r0, SK_ARRAY_COUNT(r0) },
2263        { r1, SK_ARRAY_COUNT(r1) },
2264        { r2, SK_ARRAY_COUNT(r2) },
2265    };
2266
2267    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2268        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2269    }
2270
2271    SkRandom rand;
2272    for (i = 0; i < 10000; i++) {
2273        SkRegion rgn0, rgn1;
2274
2275        const int N = 8;
2276        SkIRect rect[N];
2277        for (int j = 0; j < N; j++) {
2278            rand_rect(&rect[j], rand);
2279        }
2280        test_rects(rect, N);
2281    }
2282}
2283
2284SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2285//    test();
2286    return new SampleWindow(hwnd, argc, argv, NULL);
2287}
2288
2289void get_preferred_size(int* x, int* y, int* width, int* height) {
2290    *x = 10;
2291    *y = 50;
2292    *width = 640;
2293    *height = 480;
2294}
2295
2296void application_init() {
2297//    setenv("ANDROID_ROOT", "../../../data", 0);
2298#ifdef SK_BUILD_FOR_MAC
2299    setenv("ANDROID_ROOT", "/android/device/data", 0);
2300#endif
2301    SkGraphics::Init();
2302    SkEvent::Init();
2303}
2304
2305void application_term() {
2306    SkEvent::Term();
2307    SkGraphics::Term();
2308}
2309