SampleApp.cpp revision f97593c899d01ef3587355addbe664bc8f7b2dc5 
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 "SkGraphics.h"
13#include "SkImageEncoder.h"
14#include "SkPaint.h"
15#include "SkPicture.h"
16#include "SkStream.h"
17#include "SkTime.h"
18#include "SkWindow.h"
19
20#include "SampleCode.h"
21#include "SkTypeface.h"
22
23#if SK_SUPPORT_GPU
24#include "gl/GrGLInterface.h"
25#include "gl/GrGLUtil.h"
26#include "GrRenderTarget.h"
27#include "GrContext.h"
28#include "SkGpuDevice.h"
29#else
30class GrContext;
31#endif
32
33#include "SkOSFile.h"
34#include "SkPDFDevice.h"
35#include "SkPDFDocument.h"
36#include "SkStream.h"
37
38#include "SkGPipe.h"
39#include "SamplePipeControllers.h"
40#include "OverView.h"
41#include "TransitionView.h"
42
43SK_DEFINE_INST_COUNT(SampleWindow::DeviceManager)
44
45extern SampleView* CreateSamplePictFileView(const char filename[]);
46
47class PictFileFactory : public SkViewFactory {
48    SkString fFilename;
49public:
50    PictFileFactory(const SkString& filename) : fFilename(filename) {}
51    virtual SkView* operator() () const SK_OVERRIDE {
52        return CreateSamplePictFileView(fFilename.c_str());
53    }
54};
55
56#define PIPE_FILEx
57#ifdef  PIPE_FILE
58#define FILE_PATH "/path/to/drawing.data"
59#endif
60
61#define PIPE_NETx
62#ifdef  PIPE_NET
63#include "SkSockets.h"
64SkTCPServer gServer;
65#endif
66
67#define DEBUGGERx
68#ifdef  DEBUGGER
69extern SkView* create_debugger(const char* data, size_t size);
70extern bool is_debugger(SkView* view);
71SkTDArray<char> gTempDataStore;
72#endif
73
74
75#define USE_ARROWS_FOR_ZOOM true
76
77#if SK_ANGLE
78//#define DEFAULT_TO_ANGLE 1
79#else
80//#define DEFAULT_TO_GPU 1
81#endif
82
83#define ANIMATING_EVENTTYPE "nextSample"
84#define ANIMATING_DELAY     750
85
86#ifdef SK_DEBUG
87    #define FPS_REPEAT_MULTIPLIER   1
88#else
89    #define FPS_REPEAT_MULTIPLIER   10
90#endif
91#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
92
93static SampleWindow* gSampleWindow;
94
95static bool gShowGMBounds;
96
97static void postEventToSink(SkEvent* evt, SkEventSink* sink) {
98    evt->setTargetID(sink->getSinkID())->post();
99}
100
101///////////////////////////////////////////////////////////////////////////////
102
103static const char* skip_until(const char* str, const char* skip) {
104    if (!str) {
105        return NULL;
106    }
107    return strstr(str, skip);
108}
109
110static const char* skip_past(const char* str, const char* skip) {
111    const char* found = skip_until(str, skip);
112    if (!found) {
113        return NULL;
114    }
115    return found + strlen(skip);
116}
117
118static const char* gPrefFileName = "sampleapp_prefs.txt";
119
120static bool readTitleFromPrefs(SkString* title) {
121    SkFILEStream stream(gPrefFileName);
122    if (!stream.isValid()) {
123        return false;
124    }
125
126    int len = stream.getLength();
127    SkString data(len);
128    stream.read(data.writable_str(), len);
129    const char* s = data.c_str();
130
131    s = skip_past(s, "curr-slide-title");
132    s = skip_past(s, "=");
133    s = skip_past(s, "\"");
134    const char* stop = skip_until(s, "\"");
135    if (stop > s) {
136        title->set(s, stop - s);
137        return true;
138    }
139    return false;
140}
141
142static void writeTitleToPrefs(const char* title) {
143    SkFILEWStream stream(gPrefFileName);
144    SkString data;
145    data.printf("curr-slide-title = \"%s\"\n", title);
146    stream.write(data.c_str(), data.size());
147}
148
149///////////////////////////////////////////////////////////////////////////////
150
151class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
152public:
153
154    DefaultDeviceManager() {
155#if SK_SUPPORT_GPU
156        fCurContext = NULL;
157        fCurIntf = NULL;
158        fCurRenderTarget = NULL;
159        fMSAASampleCount = 0;
160#endif
161        fBackend = kNone_BackEndType;
162    }
163
164    virtual ~DefaultDeviceManager() {
165#if SK_SUPPORT_GPU
166        SkSafeUnref(fCurContext);
167        SkSafeUnref(fCurIntf);
168        SkSafeUnref(fCurRenderTarget);
169#endif
170    }
171
172    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
173        SkASSERT(kNone_BackEndType == fBackend);
174
175        fBackend = kNone_BackEndType;
176
177#if SK_SUPPORT_GPU
178        switch (win->getDeviceType()) {
179            case kRaster_DeviceType:
180                // fallthrough
181            case kPicture_DeviceType:
182                // fallthrough
183            case kGPU_DeviceType:
184                // fallthrough
185            case kNullGPU_DeviceType:
186                // all these guys use the native backend
187                fBackend = kNativeGL_BackEndType;
188                break;
189#if SK_ANGLE
190            case kANGLE_DeviceType:
191                // ANGLE is really the only odd man out
192                fBackend = kANGLE_BackEndType;
193                break;
194#endif // SK_ANGLE
195            default:
196                SkASSERT(false);
197                break;
198        }
199
200        bool result = win->attach(fBackend, msaaSampleCount);
201        if (!result) {
202            SkDebugf("Failed to initialize GL");
203            return;
204        }
205        fMSAASampleCount = msaaSampleCount;
206
207        SkASSERT(NULL == fCurIntf);
208        switch (win->getDeviceType()) {
209            case kRaster_DeviceType:
210                // fallthrough
211            case kPicture_DeviceType:
212                // fallthrough
213            case kGPU_DeviceType:
214                // all these guys use the native interface
215                fCurIntf = GrGLCreateNativeInterface();
216                break;
217#if SK_ANGLE
218            case kANGLE_DeviceType:
219                fCurIntf = GrGLCreateANGLEInterface();
220                break;
221#endif // SK_ANGLE
222            case kNullGPU_DeviceType:
223                fCurIntf = GrGLCreateNullInterface();
224                break;
225            default:
226                SkASSERT(false);
227                break;
228        }
229
230        SkASSERT(NULL == fCurContext);
231        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
232
233        if (NULL == fCurContext || NULL == fCurIntf) {
234            // We need some context and interface to see results
235            SkSafeUnref(fCurContext);
236            SkSafeUnref(fCurIntf);
237            SkDebugf("Failed to setup 3D");
238
239            win->detach();
240        }
241#endif // SK_SUPPORT_GPU
242        // call windowSizeChanged to create the render target
243        this->windowSizeChanged(win);
244    }
245
246    virtual void tearDownBackend(SampleWindow *win) {
247#if SK_SUPPORT_GPU
248        SkSafeUnref(fCurContext);
249        fCurContext = NULL;
250
251        SkSafeUnref(fCurIntf);
252        fCurIntf = NULL;
253
254        SkSafeUnref(fCurRenderTarget);
255        fCurRenderTarget = NULL;
256#endif
257        win->detach();
258        fBackend = kNone_BackEndType;
259    }
260
261    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
262                                   SampleWindow* win) {
263        switch (dType) {
264            case kRaster_DeviceType:
265                // fallthrough
266            case kPicture_DeviceType:
267                // fallthrough
268#if SK_ANGLE
269            case kANGLE_DeviceType:
270#endif
271                break;
272#if SK_SUPPORT_GPU
273            case kGPU_DeviceType:
274            case kNullGPU_DeviceType:
275                if (fCurContext) {
276                    SkAutoTUnref<SkDevice> device(new SkGpuDevice(fCurContext,
277                                                                  fCurRenderTarget));
278                    return new SkCanvas(device);
279                } else {
280                    return NULL;
281                }
282                break;
283#endif
284            default:
285                SkASSERT(false);
286                return NULL;
287        }
288        return NULL;
289    }
290
291    virtual void publishCanvas(SampleWindow::DeviceType dType,
292                               SkCanvas* canvas,
293                               SampleWindow* win) {
294#if SK_SUPPORT_GPU
295        if (fCurContext) {
296            // in case we have queued drawing calls
297            fCurContext->flush();
298
299            if (kGPU_DeviceType != dType && kNullGPU_DeviceType != dType) {
300                // need to send the raster bits to the (gpu) window
301                fCurContext->setRenderTarget(fCurRenderTarget);
302                const SkBitmap& bm = win->getBitmap();
303                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
304                                             kSkia8888_PM_GrPixelConfig,
305                                             bm.getPixels(),
306                                             bm.rowBytes());
307            }
308        }
309#endif
310
311        win->present();
312    }
313
314    virtual void windowSizeChanged(SampleWindow* win) {
315#if SK_SUPPORT_GPU
316        if (fCurContext) {
317            win->attach(fBackend, fMSAASampleCount);
318
319            GrBackendRenderTargetDesc desc;
320            desc.fWidth = SkScalarRound(win->width());
321            desc.fHeight = SkScalarRound(win->height());
322            desc.fConfig = kSkia8888_PM_GrPixelConfig;
323            GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
324            GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
325            GrGLint buffer;
326            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
327            desc.fRenderTargetHandle = buffer;
328
329            SkSafeUnref(fCurRenderTarget);
330            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
331        }
332#endif
333    }
334
335    virtual GrContext* getGrContext() {
336#if SK_SUPPORT_GPU
337        return fCurContext;
338#else
339        return NULL;
340#endif
341    }
342
343    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
344#if SK_SUPPORT_GPU
345        return fCurRenderTarget;
346#else
347        return NULL;
348#endif
349    }
350
351private:
352
353#if SK_SUPPORT_GPU
354    GrContext*              fCurContext;
355    const GrGLInterface*    fCurIntf;
356    GrRenderTarget*         fCurRenderTarget;
357    int fMSAASampleCount;
358#endif
359
360    SkOSWindow::SkBackEndTypes fBackend;
361
362    typedef SampleWindow::DeviceManager INHERITED;
363};
364
365///////////////
366static const char view_inval_msg[] = "view-inval-msg";
367
368void SampleWindow::postInvalDelay() {
369    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
370}
371
372static bool isInvalEvent(const SkEvent& evt) {
373    return evt.isType(view_inval_msg);
374}
375//////////////////
376
377SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
378    : fCreateFunc(func) {
379}
380
381SkView* SkFuncViewFactory::operator() () const {
382    return (*fCreateFunc)();
383}
384
385#include "GMSampleView.h"
386
387SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
388    : fFunc(func) {
389}
390
391SkView* SkGMSampleViewFactory::operator() () const {
392    return new GMSampleView(fFunc(NULL));
393}
394
395SkViewRegister* SkViewRegister::gHead;
396SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
397    fFact->ref();
398    fChain = gHead;
399    gHead = this;
400}
401
402SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
403    fFact = new SkFuncViewFactory(func);
404    fChain = gHead;
405    gHead = this;
406}
407
408SkViewRegister::SkViewRegister(GMFactoryFunc func) {
409    fFact = new SkGMSampleViewFactory(func);
410    fChain = gHead;
411    gHead = this;
412}
413
414class AutoUnrefArray {
415public:
416    AutoUnrefArray() {}
417    ~AutoUnrefArray() {
418        int count = fObjs.count();
419        for (int i = 0; i < count; ++i) {
420            fObjs[i]->unref();
421        }
422    }
423    SkRefCnt*& push_back() { return *fObjs.append(); }
424
425private:
426    SkTDArray<SkRefCnt*> fObjs;
427};
428
429// registers GMs as Samples
430// This can't be performed during static initialization because it could be
431// run before GMRegistry has been fully built.
432static void SkGMRegistyToSampleRegistry() {
433    static bool gOnce;
434    static AutoUnrefArray fRegisters;
435
436    if (!gOnce) {
437        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
438        while (gmreg) {
439            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
440            gmreg = gmreg->next();
441        }
442        gOnce = true;
443    }
444}
445
446#if 0
447#include <CoreFoundation/CoreFoundation.h>
448#include <CoreFoundation/CFURLAccess.h>
449
450static void testpdf() {
451    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
452                                                 kCFStringEncodingUTF8);
453    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
454                                              kCFURLPOSIXPathStyle,
455                                              false);
456    CFRelease(path);
457    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
458    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
459    CFRelease(url);
460
461    CGContextBeginPage(cg, &box);
462    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
463    CGContextFillEllipseInRect(cg, r);
464    CGContextEndPage(cg);
465    CGContextRelease(cg);
466
467    if (false) {
468        SkBitmap bm;
469        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
470        bm.allocPixels();
471        bm.eraseColor(SK_ColorTRANSPARENT);
472
473        SkCanvas canvas(bm);
474
475    }
476}
477#endif
478
479//////////////////////////////////////////////////////////////////////////////
480
481enum FlipAxisEnum {
482    kFlipAxis_X = (1 << 0),
483    kFlipAxis_Y = (1 << 1)
484};
485
486#include "SkDrawFilter.h"
487
488class FlagsDrawFilter : public SkDrawFilter {
489public:
490    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
491                    SkOSMenu::TriState hinting) :
492        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
493
494    virtual bool filter(SkPaint* paint, Type t) {
495        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
496            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
497        }
498        if (SkOSMenu::kMixedState != fAAState) {
499            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
500        }
501        if (SkOSMenu::kMixedState != fFilterState) {
502            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
503        }
504        if (SkOSMenu::kMixedState != fHintingState) {
505            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
506                              SkPaint::kNormal_Hinting :
507                              SkPaint::kSlight_Hinting);
508        }
509        return true;
510    }
511
512private:
513    SkOSMenu::TriState  fLCDState;
514    SkOSMenu::TriState  fAAState;
515    SkOSMenu::TriState  fFilterState;
516    SkOSMenu::TriState  fHintingState;
517};
518
519//////////////////////////////////////////////////////////////////////////////
520
521#define MAX_ZOOM_LEVEL  8
522#define MIN_ZOOM_LEVEL  -8
523
524static const char gCharEvtName[] = "SampleCode_Char_Event";
525static const char gKeyEvtName[] = "SampleCode_Key_Event";
526static const char gTitleEvtName[] = "SampleCode_Title_Event";
527static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
528static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
529static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
530
531bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
532    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
533        if (outUni) {
534            *outUni = evt.getFast32();
535        }
536        return true;
537    }
538    return false;
539}
540
541bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
542    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
543        if (outKey) {
544            *outKey = (SkKey)evt.getFast32();
545        }
546        return true;
547    }
548    return false;
549}
550
551bool SampleCode::TitleQ(const SkEvent& evt) {
552    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
553}
554
555void SampleCode::TitleR(SkEvent* evt, const char title[]) {
556    SkASSERT(evt && TitleQ(*evt));
557    evt->setString(gTitleEvtName, title);
558}
559
560bool SampleCode::RequestTitle(SkView* view, SkString* title) {
561    SkEvent evt(gTitleEvtName);
562    if (view->doQuery(&evt)) {
563        title->set(evt.findString(gTitleEvtName));
564        return true;
565    }
566    return false;
567}
568
569bool SampleCode::PrefSizeQ(const SkEvent& evt) {
570    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
571}
572
573void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
574    SkASSERT(evt && PrefSizeQ(*evt));
575    SkScalar size[2];
576    size[0] = width;
577    size[1] = height;
578    evt->setScalars(gPrefSizeEvtName, 2, size);
579}
580
581bool SampleCode::FastTextQ(const SkEvent& evt) {
582    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
583}
584
585///////////////////////////////////////////////////////////////////////////////
586
587static SkMSec gAnimTime;
588static SkMSec gAnimTimePrev;
589
590SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
591SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
592SkScalar SampleCode::GetAnimSecondsDelta() {
593    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
594}
595
596SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
597    // since gAnimTime can be up to 32 bits, we can't convert it to a float
598    // or we'll lose the low bits. Hence we use doubles for the intermediate
599    // calculations
600    double seconds = (double)gAnimTime / 1000.0;
601    double value = SkScalarToDouble(speed) * seconds;
602    if (period) {
603        value = ::fmod(value, SkScalarToDouble(period));
604    }
605    return SkDoubleToScalar(value);
606}
607
608SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
609                                      SkScalar periodInSec,
610                                      SkScalar phaseInSec) {
611    if (!periodInSec) {
612        return 0;
613    }
614    double t = (double)gAnimTime / 1000.0 + phaseInSec;
615    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
616    amplitude = SK_ScalarHalf * amplitude;
617    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
618}
619
620GrContext* SampleCode::GetGr() {
621    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
622}
623
624// some GMs rely on having a skiagm::GetGr function defined
625namespace skiagm {
626    // FIXME: this should be moved into a header
627    GrContext* GetGr();
628    GrContext* GetGr() { return SampleCode::GetGr(); }
629}
630
631//////////////////////////////////////////////////////////////////////////////
632
633static SkView* curr_view(SkWindow* wind) {
634    SkView::F2BIter iter(wind);
635    return iter.next();
636}
637
638static bool curr_title(SkWindow* wind, SkString* title) {
639    SkView* view = curr_view(wind);
640    if (view) {
641        SkEvent evt(gTitleEvtName);
642        if (view->doQuery(&evt)) {
643            title->set(evt.findString(gTitleEvtName));
644            return true;
645        }
646    }
647    return false;
648}
649
650void SampleWindow::setZoomCenter(float x, float y)
651{
652    fZoomCenterX = SkFloatToScalar(x);
653    fZoomCenterY = SkFloatToScalar(y);
654}
655
656bool SampleWindow::zoomIn()
657{
658    // Arbitrarily decided
659    if (fFatBitsScale == 25) return false;
660    fFatBitsScale++;
661    this->inval(NULL);
662    return true;
663}
664
665bool SampleWindow::zoomOut()
666{
667    if (fFatBitsScale == 1) return false;
668    fFatBitsScale--;
669    this->inval(NULL);
670    return true;
671}
672
673void SampleWindow::updatePointer(int x, int y)
674{
675    fMouseX = x;
676    fMouseY = y;
677    if (fShowZoomer) {
678        this->inval(NULL);
679    }
680}
681
682static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
683    static const SampleWindow::DeviceType gCT[] = {
684        SampleWindow::kPicture_DeviceType,
685#if SK_SUPPORT_GPU
686        SampleWindow::kGPU_DeviceType,
687#if SK_ANGLE
688        SampleWindow::kANGLE_DeviceType,
689#endif // SK_ANGLE
690        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
691#endif // SK_SUPPORT_GPU
692        SampleWindow::kRaster_DeviceType
693    };
694    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
695    return gCT[ct];
696}
697
698static void usage(const char * argv0) {
699    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path]\n", argv0);
700    SkDebugf("    sampleName: sample at which to start.\n");
701    SkDebugf("    resourcePath: directory that stores image resources.\n");
702    SkDebugf("    msaa: request multisampling with the given sample count.\n");
703    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
704    SkDebugf("    path: path to skia picture\n");
705}
706
707SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
708    : INHERITED(hwnd)
709    , fDevManager(NULL) {
710
711    this->registerPictFileSamples(argv, argc);
712    this->registerPictFileSample(argv, argc);
713    SkGMRegistyToSampleRegistry();
714    {
715        const SkViewRegister* reg = SkViewRegister::Head();
716        while (reg) {
717            *fSamples.append() = reg->factory();
718            reg = reg->next();
719        }
720    }
721
722    const char* resourcePath = NULL;
723    fCurrIndex = -1;
724    fMSAASampleCount = 0;
725
726    const char* const commandName = argv[0];
727    char* const* stop = argv + argc;
728    for (++argv; argv < stop; ++argv) {
729        if (strcmp(*argv, "-i") == 0) {
730            argv++;
731            if (argv < stop && **argv) {
732                resourcePath = *argv;
733            }
734        } else if (strcmp(*argv, "--slide") == 0) {
735            argv++;
736            if (argv < stop && **argv) {
737                fCurrIndex = findByTitle(*argv);
738                if (fCurrIndex < 0) {
739                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
740                    listTitles();
741                }
742            }
743        } else if (strcmp(*argv, "--msaa") == 0) {
744            ++argv;
745            if (argv < stop && **argv) {
746                fMSAASampleCount = atoi(*argv);
747            }
748        } else if (strcmp(*argv, "--list") == 0) {
749            listTitles();
750        }
751        else {
752            usage(commandName);
753        }
754    }
755
756    if (fCurrIndex < 0) {
757        SkString title;
758        if (readTitleFromPrefs(&title)) {
759            fCurrIndex = findByTitle(title.c_str());
760        }
761    }
762
763    if (fCurrIndex < 0) {
764        fCurrIndex = 0;
765    }
766
767    gSampleWindow = this;
768
769#ifdef  PIPE_FILE
770    //Clear existing file or create file if it doesn't exist
771    FILE* f = fopen(FILE_PATH, "wb");
772    fclose(f);
773#endif
774
775    fPicture = NULL;
776
777    fDeviceType = kRaster_DeviceType;
778
779#if DEFAULT_TO_GPU
780    fDeviceType = kGPU_DeviceType;
781#endif
782#if SK_ANGLE && DEFAULT_TO_ANGLE
783    fDeviceType = kANGLE_DeviceType;
784#endif
785
786    fUseClip = false;
787    fNClip = false;
788    fAnimating = false;
789    fRotate = false;
790    fPerspAnim = false;
791    fPerspAnimTime = 0;
792    fScale = false;
793    fRequestGrabImage = false;
794    fPipeState = SkOSMenu::kOffState;
795    fTilingState = SkOSMenu::kOffState;
796    fTileCount.set(1, 1);
797    fMeasureFPS = false;
798    fLCDState = SkOSMenu::kMixedState;
799    fAAState = SkOSMenu::kMixedState;
800    fFilterState = SkOSMenu::kMixedState;
801    fHintingState = SkOSMenu::kMixedState;
802    fFlipAxis = 0;
803    fScrollTestX = fScrollTestY = 0;
804
805    fMouseX = fMouseY = 0;
806    fFatBitsScale = 8;
807    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
808    fShowZoomer = false;
809
810    fZoomLevel = 0;
811    fZoomScale = SK_Scalar1;
812
813    fMagnify = false;
814    fDebugger = false;
815
816    fSaveToPdf = false;
817    fPdfCanvas = NULL;
818
819    fTransitionNext = 6;
820    fTransitionPrev = 2;
821
822    int sinkID = this->getSinkID();
823    fAppMenu = new SkOSMenu;
824    fAppMenu->setTitle("Global Settings");
825    int itemID;
826
827    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
828                                "Raster", "Picture", "OpenGL",
829#if SK_ANGLE
830                                "ANGLE",
831#endif
832                                NULL);
833    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
834    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
835    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
836    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
837    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
838    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
839    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
840    itemID = fAppMenu->appendTriState("Hinting", "Hinting", sinkID, fHintingState);
841    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
842
843    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
844                                                  fPipeState);
845    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
846
847    itemID = fAppMenu->appendTriState("Tiling", "Tiling", sinkID, fTilingState);
848    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
849
850#ifdef DEBUGGER
851    itemID = fAppMenu->appendSwitch("Debugger", "Debugger", sinkID, fDebugger);
852    fAppMenu->assignKeyEquivalentToItem(itemID, 'q');
853#endif
854    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
855    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
856    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
857    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
858    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
859    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
860    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
861    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
862    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
863    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
864    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
865    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
866    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
867                                fTransitionNext, "Up", "Up and Right", "Right",
868                                "Down and Right", "Down", "Down and Left",
869                                "Left", "Up and Left", NULL);
870    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
871    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
872                                fTransitionPrev, "Up", "Up and Right", "Right",
873                                "Down and Right", "Down", "Down and Left",
874                                "Left", "Up and Left", NULL);
875    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
876    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
877    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
878
879    this->addMenu(fAppMenu);
880    fSlideMenu = new SkOSMenu;
881    this->addMenu(fSlideMenu);
882
883//    this->setConfig(SkBitmap::kRGB_565_Config);
884    this->setConfig(SkBitmap::kARGB_8888_Config);
885    this->setVisibleP(true);
886    this->setClipToBounds(false);
887
888    skiagm::GM::SetResourcePath(resourcePath);
889
890    this->loadView((*fSamples[fCurrIndex])());
891
892    fPDFData = NULL;
893
894    if (NULL == devManager) {
895        fDevManager = new DefaultDeviceManager();
896    } else {
897        devManager->ref();
898        fDevManager = devManager;
899    }
900    fDevManager->setUpBackend(this, fMSAASampleCount);
901
902    // If another constructor set our dimensions, ensure that our
903    // onSizeChange gets called.
904    if (this->height() && this->width()) {
905        this->onSizeChange();
906    }
907
908    // can't call this synchronously, since it may require a subclass to
909    // to implement, or the caller may need us to have returned from the
910    // constructor first. Hence we post an event to ourselves.
911//    this->updateTitle();
912    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
913}
914
915SampleWindow::~SampleWindow() {
916    delete fPicture;
917    delete fPdfCanvas;
918    fTypeface->unref();
919
920    SkSafeUnref(fDevManager);
921}
922
923static void make_filepath(SkString* path, const char* dir, const SkString& name) {
924    size_t len = strlen(dir);
925    path->set(dir);
926    if (len > 0 && dir[len - 1] != '/') {
927        path->append("/");
928    }
929    path->append(name);
930}
931
932void SampleWindow::registerPictFileSample(char** argv, int argc) {
933    const char* pict = NULL;
934
935    for (int i = 0; i < argc; ++i) {
936        if (!strcmp(argv[i], "--picture")) {
937            i += 1;
938            if (i < argc) {
939                pict = argv[i];
940                break;
941            }
942        }
943    }
944    if (pict) {
945        SkString path(pict);
946        *fSamples.append() = new PictFileFactory(path);
947    }
948}
949
950void SampleWindow::registerPictFileSamples(char** argv, int argc) {
951    const char* pictDir = NULL;
952
953    for (int i = 0; i < argc; ++i) {
954        if (!strcmp(argv[i], "--pictureDir")) {
955            i += 1;
956            if (i < argc) {
957                pictDir = argv[i];
958                break;
959            }
960        }
961    }
962    if (pictDir) {
963        SkOSFile::Iter iter(pictDir, "skp");
964        SkString filename;
965        while (iter.next(&filename)) {
966            SkString path;
967            make_filepath(&path, pictDir, filename);
968            *fSamples.append() = new PictFileFactory(path);
969        }
970    }
971}
972
973int SampleWindow::findByTitle(const char title[]) {
974    int i, count = fSamples.count();
975    for (i = 0; i < count; i++) {
976        if (getSampleTitle(i).equals(title)) {
977            return i;
978        }
979    }
980    return -1;
981}
982
983void SampleWindow::listTitles() {
984    int count = fSamples.count();
985    SkDebugf("All Slides:\n");
986    for (int i = 0; i < count; i++) {
987        SkDebugf("    %s\n", getSampleTitle(i).c_str());
988    }
989}
990
991static SkBitmap capture_bitmap(SkCanvas* canvas) {
992    SkBitmap bm;
993    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
994    src.copyTo(&bm, src.config());
995    return bm;
996}
997
998static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
999                        SkBitmap* diff) {
1000    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1001
1002    SkAutoLockPixels alp0(src);
1003    SkAutoLockPixels alp1(orig);
1004    for (int y = 0; y < src.height(); y++) {
1005        const void* srcP = src.getAddr(0, y);
1006        const void* origP = orig.getAddr(0, y);
1007        size_t bytes = src.width() * src.bytesPerPixel();
1008        if (memcmp(srcP, origP, bytes)) {
1009            SkDebugf("---------- difference on line %d\n", y);
1010            return true;
1011        }
1012    }
1013    return false;
1014}
1015
1016static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1017{
1018    SkColor desiredColor = paint.getColor();
1019    paint.setColor(SK_ColorWHITE);
1020    const char* c_str = string.c_str();
1021    size_t size = string.size();
1022    SkRect bounds;
1023    paint.measureText(c_str, size, &bounds);
1024    bounds.offset(left, top);
1025    SkScalar inset = SkIntToScalar(-2);
1026    bounds.inset(inset, inset);
1027    canvas->drawRect(bounds, paint);
1028    if (desiredColor != SK_ColorBLACK) {
1029        paint.setColor(SK_ColorBLACK);
1030        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1031    }
1032    paint.setColor(desiredColor);
1033    canvas->drawText(c_str, size, left, top, paint);
1034}
1035
1036#define XCLIP_N  8
1037#define YCLIP_N  8
1038
1039void SampleWindow::draw(SkCanvas* canvas) {
1040    // update the animation time
1041    if (!gAnimTimePrev && !gAnimTime) {
1042        // first time make delta be 0
1043        gAnimTime = SkTime::GetMSecs();
1044        gAnimTimePrev = gAnimTime;
1045    } else {
1046        gAnimTimePrev = gAnimTime;
1047        gAnimTime = SkTime::GetMSecs();
1048    }
1049
1050    if (fGesture.isActive()) {
1051        this->updateMatrix();
1052    }
1053
1054    if (fNClip) {
1055        this->INHERITED::draw(canvas);
1056        SkBitmap orig = capture_bitmap(canvas);
1057
1058        const SkScalar w = this->width();
1059        const SkScalar h = this->height();
1060        const SkScalar cw = w / XCLIP_N;
1061        const SkScalar ch = h / YCLIP_N;
1062        for (int y = 0; y < YCLIP_N; y++) {
1063            SkRect r;
1064            r.fTop = y * ch;
1065            r.fBottom = (y + 1) * ch;
1066            if (y == YCLIP_N - 1) {
1067                r.fBottom = h;
1068            }
1069            for (int x = 0; x < XCLIP_N; x++) {
1070                SkAutoCanvasRestore acr(canvas, true);
1071                r.fLeft = x * cw;
1072                r.fRight = (x + 1) * cw;
1073                if (x == XCLIP_N - 1) {
1074                    r.fRight = w;
1075                }
1076                canvas->clipRect(r);
1077                this->INHERITED::draw(canvas);
1078            }
1079        }
1080
1081        SkBitmap diff;
1082        if (bitmap_diff(canvas, orig, &diff)) {
1083        }
1084    } else {
1085        const SkScalar cw = SkScalarDiv(this->width(), SkIntToScalar(fTileCount.width()));
1086        const SkScalar ch = SkScalarDiv(this->height(), SkIntToScalar(fTileCount.height()));
1087
1088        for (int y = 0; y < fTileCount.height(); ++y) {
1089            for (int x = 0; x < fTileCount.width(); ++x) {
1090                SkAutoCanvasRestore acr(canvas, true);
1091                canvas->clipRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch));
1092                this->INHERITED::draw(canvas);
1093            }
1094        }
1095
1096        if (!fTileCount.equals(1, 1)) {
1097            SkPaint paint;
1098            paint.setColor(0x60FF00FF);
1099            paint.setStyle(SkPaint::kStroke_Style);
1100            for (int y = 0; y < fTileCount.height(); ++y) {
1101                for (int x = 0; x < fTileCount.width(); ++x) {
1102                    canvas->drawRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch), paint);
1103                }
1104            }
1105        }
1106    }
1107    if (fShowZoomer && !fSaveToPdf) {
1108        showZoomer(canvas);
1109    }
1110    if (fMagnify && !fSaveToPdf) {
1111        magnify(canvas);
1112    }
1113
1114    // do this last
1115    fDevManager->publishCanvas(fDeviceType, canvas, this);
1116}
1117
1118static float clipW = 200;
1119static float clipH = 200;
1120void SampleWindow::magnify(SkCanvas* canvas) {
1121    SkRect r;
1122    int count = canvas->save();
1123
1124    SkMatrix m = canvas->getTotalMatrix();
1125    if (!m.invert(&m)) {
1126        return;
1127    }
1128    SkPoint offset, center;
1129    SkScalar mouseX = fMouseX * SK_Scalar1;
1130    SkScalar mouseY = fMouseY * SK_Scalar1;
1131    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1132    m.mapXY(mouseX, mouseY, &center);
1133
1134    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1135    r.offset(offset.fX, offset.fY);
1136
1137    SkPaint paint;
1138    paint.setColor(0xFF66AAEE);
1139    paint.setStyle(SkPaint::kStroke_Style);
1140    paint.setStrokeWidth(10.f * m.getScaleX());
1141    //lense offset
1142    //canvas->translate(0, -250);
1143    canvas->drawRect(r, paint);
1144    canvas->clipRect(r);
1145
1146    m = canvas->getTotalMatrix();
1147    m.setTranslate(-center.fX, -center.fY);
1148    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1149    m.postTranslate(center.fX, center.fY);
1150    canvas->concat(m);
1151
1152    this->INHERITED::draw(canvas);
1153
1154    canvas->restoreToCount(count);
1155}
1156
1157void SampleWindow::showZoomer(SkCanvas* canvas) {
1158        int count = canvas->save();
1159        canvas->resetMatrix();
1160        // Ensure the mouse position is on screen.
1161        int width = SkScalarRound(this->width());
1162        int height = SkScalarRound(this->height());
1163        if (fMouseX >= width) fMouseX = width - 1;
1164        else if (fMouseX < 0) fMouseX = 0;
1165        if (fMouseY >= height) fMouseY = height - 1;
1166        else if (fMouseY < 0) fMouseY = 0;
1167
1168        SkBitmap bitmap = capture_bitmap(canvas);
1169        bitmap.lockPixels();
1170
1171        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1172        int zoomedWidth = (width >> 1) | 1;
1173        int zoomedHeight = (height >> 1) | 1;
1174        SkIRect src;
1175        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1176        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1177        SkRect dest;
1178        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1179        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1180        SkPaint paint;
1181        // Clear the background behind our zoomed in view
1182        paint.setColor(SK_ColorWHITE);
1183        canvas->drawRect(dest, paint);
1184        canvas->drawBitmapRect(bitmap, &src, dest);
1185        paint.setColor(SK_ColorBLACK);
1186        paint.setStyle(SkPaint::kStroke_Style);
1187        // Draw a border around the pixel in the middle
1188        SkRect originalPixel;
1189        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1190        SkMatrix matrix;
1191        SkRect scalarSrc;
1192        scalarSrc.set(src);
1193        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1194        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1195            SkRect pixel;
1196            matrix.mapRect(&pixel, originalPixel);
1197            // TODO Perhaps measure the values and make the outline white if it's "dark"
1198            if (color == SK_ColorBLACK) {
1199                paint.setColor(SK_ColorWHITE);
1200            }
1201            canvas->drawRect(pixel, paint);
1202        }
1203        paint.setColor(SK_ColorBLACK);
1204        // Draw a border around the destination rectangle
1205        canvas->drawRect(dest, paint);
1206        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1207        // Identify the pixel and its color on screen
1208        paint.setTypeface(fTypeface);
1209        paint.setAntiAlias(true);
1210        SkScalar lineHeight = paint.getFontMetrics(NULL);
1211        SkString string;
1212        string.appendf("(%i, %i)", fMouseX, fMouseY);
1213        SkScalar left = dest.fLeft + SkIntToScalar(3);
1214        SkScalar i = SK_Scalar1;
1215        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1216        // Alpha
1217        i += SK_Scalar1;
1218        string.reset();
1219        string.appendf("A: %X", SkColorGetA(color));
1220        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1221        // Red
1222        i += SK_Scalar1;
1223        string.reset();
1224        string.appendf("R: %X", SkColorGetR(color));
1225        paint.setColor(SK_ColorRED);
1226        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1227        // Green
1228        i += SK_Scalar1;
1229        string.reset();
1230        string.appendf("G: %X", SkColorGetG(color));
1231        paint.setColor(SK_ColorGREEN);
1232        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1233        // Blue
1234        i += SK_Scalar1;
1235        string.reset();
1236        string.appendf("B: %X", SkColorGetB(color));
1237        paint.setColor(SK_ColorBLUE);
1238        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1239        canvas->restoreToCount(count);
1240}
1241
1242void SampleWindow::onDraw(SkCanvas* canvas) {
1243}
1244
1245#include "SkColorPriv.h"
1246
1247#if 0 // UNUSED
1248static void reverseRedAndBlue(const SkBitmap& bm) {
1249    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1250    uint8_t* p = (uint8_t*)bm.getPixels();
1251    uint8_t* stop = p + bm.getSize();
1252    while (p < stop) {
1253        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1254        unsigned scale = SkAlpha255To256(p[3]);
1255        unsigned r = p[2];
1256        unsigned b = p[0];
1257        p[0] = SkAlphaMul(r, scale);
1258        p[1] = SkAlphaMul(p[1], scale);
1259        p[2] = SkAlphaMul(b, scale);
1260        p += 4;
1261    }
1262}
1263#endif
1264
1265void SampleWindow::saveToPdf()
1266{
1267    fSaveToPdf = true;
1268    this->inval(NULL);
1269}
1270
1271SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1272    if (fSaveToPdf) {
1273        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1274        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1275        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1276                canvas->getTotalMatrix());
1277        fPdfCanvas = new SkCanvas(pdfDevice);
1278        pdfDevice->unref();
1279        canvas = fPdfCanvas;
1280    } else {
1281        switch (fDeviceType) {
1282            case kRaster_DeviceType:
1283                // fallthrough
1284#if SK_SUPPORT_GPU
1285            case kGPU_DeviceType:
1286                // fallthrough
1287#if SK_ANGLE
1288            case kANGLE_DeviceType:
1289#endif // SK_ANGLE
1290#endif // SK_SUPPORT_GPU
1291                canvas = this->INHERITED::beforeChildren(canvas);
1292                break;
1293            case kPicture_DeviceType:
1294                fPicture = new SkPicture;
1295                canvas = fPicture->beginRecording(9999, 9999);
1296                break;
1297#if SK_SUPPORT_GPU
1298            case kNullGPU_DeviceType:
1299                break;
1300#endif
1301            default:
1302                SkASSERT(false);
1303                break;
1304        }
1305    }
1306
1307    if (fUseClip) {
1308        canvas->drawColor(0xFFFF88FF);
1309        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1310    }
1311
1312    return canvas;
1313}
1314
1315static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1316                      const SkRegion& rgn) {
1317    SkCanvas    canvas(bm);
1318    SkRegion    inval(rgn);
1319
1320    inval.translate(r.fLeft, r.fTop);
1321    canvas.clipRegion(inval);
1322    canvas.drawColor(0xFFFF8080);
1323}
1324#include "SkData.h"
1325void SampleWindow::afterChildren(SkCanvas* orig) {
1326    if (fSaveToPdf) {
1327        fSaveToPdf = false;
1328        if (fShowZoomer) {
1329            showZoomer(fPdfCanvas);
1330        }
1331        SkString name;
1332        name.printf("%s.pdf", this->getTitle());
1333        SkPDFDocument doc;
1334        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1335        doc.appendPage(device);
1336#ifdef SK_BUILD_FOR_ANDROID
1337        name.prepend("/sdcard/");
1338#endif
1339
1340#ifdef SK_BUILD_FOR_IOS
1341        SkDynamicMemoryWStream mstream;
1342        doc.emitPDF(&mstream);
1343        fPDFData = mstream.copyToData();
1344#endif
1345        SkFILEWStream stream(name.c_str());
1346        if (stream.isValid()) {
1347            doc.emitPDF(&stream);
1348            const char* desc = "File saved from Skia SampleApp";
1349            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1350        }
1351
1352        delete fPdfCanvas;
1353        fPdfCanvas = NULL;
1354
1355        // We took over the draw calls in order to create the PDF, so we need
1356        // to redraw.
1357        this->inval(NULL);
1358        return;
1359    }
1360
1361    if (fRequestGrabImage) {
1362        fRequestGrabImage = false;
1363
1364        SkDevice* device = orig->getDevice();
1365        SkBitmap bmp;
1366        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1367            static int gSampleGrabCounter;
1368            SkString name;
1369            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1370            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1371                                       SkImageEncoder::kPNG_Type, 100);
1372        }
1373    }
1374
1375    if (kPicture_DeviceType == fDeviceType) {
1376        if (true) {
1377            SkPicture* pict = new SkPicture(*fPicture);
1378            fPicture->unref();
1379            this->installDrawFilter(orig);
1380            orig->drawPicture(*pict);
1381            pict->unref();
1382        } else if (true) {
1383            SkDynamicMemoryWStream ostream;
1384            fPicture->serialize(&ostream);
1385            fPicture->unref();
1386
1387            SkAutoDataUnref data(ostream.copyToData());
1388            SkMemoryStream istream(data->data(), data->size());
1389            SkPicture pict(&istream);
1390            orig->drawPicture(pict);
1391        } else {
1392            fPicture->draw(orig);
1393            fPicture->unref();
1394        }
1395        fPicture = NULL;
1396    }
1397
1398    // Do this after presentGL and other finishing, rather than in afterChild
1399    if (fMeasureFPS && fMeasureFPS_Time) {
1400        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
1401        this->updateTitle();
1402        this->postInvalDelay();
1403    }
1404
1405    //    if ((fScrollTestX | fScrollTestY) != 0)
1406    if (false) {
1407        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1408        int dx = fScrollTestX * 7;
1409        int dy = fScrollTestY * 7;
1410        SkIRect r;
1411        SkRegion inval;
1412
1413        r.set(50, 50, 50+100, 50+100);
1414        bm.scrollRect(&r, dx, dy, &inval);
1415        paint_rgn(bm, r, inval);
1416    }
1417#ifdef DEBUGGER
1418    SkView* curr = curr_view(this);
1419    if (fDebugger && !is_debugger(curr) && !is_transition(curr) && !is_overview(curr)) {
1420        //Stop Pipe when fDebugger is active
1421        if (fPipeState != SkOSMenu::kOffState) {
1422            fPipeState = SkOSMenu::kOffState;
1423            (void)SampleView::SetUsePipe(curr, fPipeState);
1424            fAppMenu->getItemByID(fUsePipeMenuItemID)->setTriState(fPipeState);
1425            this->onUpdateMenu(fAppMenu);
1426        }
1427
1428        //Reset any transformations
1429        fGesture.stop();
1430        fGesture.reset();
1431
1432        this->loadView(create_debugger(gTempDataStore.begin(),
1433                                       gTempDataStore.count()));
1434    }
1435#endif
1436}
1437
1438void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1439    if (fScale) {
1440        SkScalar scale = SK_Scalar1 * 7 / 10;
1441        SkScalar cx = this->width() / 2;
1442        SkScalar cy = this->height() / 2;
1443        canvas->translate(cx, cy);
1444        canvas->scale(scale, scale);
1445        canvas->translate(-cx, -cy);
1446    }
1447    if (fRotate) {
1448        SkScalar cx = this->width() / 2;
1449        SkScalar cy = this->height() / 2;
1450        canvas->translate(cx, cy);
1451        canvas->rotate(SkIntToScalar(30));
1452        canvas->translate(-cx, -cy);
1453    }
1454    if (fPerspAnim) {
1455        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1456
1457        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1458        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1459        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1460        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1461            t = gAnimPeriod - t;
1462        }
1463        t = 2 * t - gAnimPeriod;
1464        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1465        SkMatrix m;
1466        m.reset();
1467        m.setPerspY(t);
1468        canvas->concat(m);
1469    }
1470
1471    this->installDrawFilter(canvas);
1472
1473    if (fMeasureFPS) {
1474        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
1475        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1476            fMeasureFPS_Time = SkTime::GetMSecs();
1477        }
1478    } else {
1479        (void)SampleView::SetRepeatDraw(child, 1);
1480    }
1481    if (fPerspAnim) {
1482        this->inval(NULL);
1483    }
1484}
1485
1486void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1487    canvas->setDrawFilter(NULL);
1488}
1489
1490static SkBitmap::Config gConfigCycle[] = {
1491    SkBitmap::kNo_Config,           // none -> none
1492    SkBitmap::kNo_Config,           // a1 -> none
1493    SkBitmap::kNo_Config,           // a8 -> none
1494    SkBitmap::kNo_Config,           // index8 -> none
1495    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1496    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1497    SkBitmap::kRGB_565_Config       // 8888 -> 565
1498};
1499
1500static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1501    return gConfigCycle[c];
1502}
1503
1504void SampleWindow::changeZoomLevel(float delta) {
1505    fZoomLevel += SkFloatToScalar(delta);
1506    if (fZoomLevel > 0) {
1507        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1508        fZoomScale = fZoomLevel + SK_Scalar1;
1509    } else if (fZoomLevel < 0) {
1510        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1511        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1512    } else {
1513        fZoomScale = SK_Scalar1;
1514    }
1515    this->updateMatrix();
1516}
1517
1518void SampleWindow::updateMatrix(){
1519    SkMatrix m;
1520    m.reset();
1521    if (fZoomLevel) {
1522        SkPoint center;
1523        //m = this->getLocalMatrix();//.invert(&m);
1524        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1525        SkScalar cx = center.fX;
1526        SkScalar cy = center.fY;
1527
1528        m.setTranslate(-cx, -cy);
1529        m.postScale(fZoomScale, fZoomScale);
1530        m.postTranslate(cx, cy);
1531    }
1532
1533    if (fFlipAxis) {
1534        m.preTranslate(fZoomCenterX, fZoomCenterY);
1535        if (fFlipAxis & kFlipAxis_X) {
1536            m.preScale(-SK_Scalar1, SK_Scalar1);
1537        }
1538        if (fFlipAxis & kFlipAxis_Y) {
1539            m.preScale(SK_Scalar1, -SK_Scalar1);
1540        }
1541        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1542        //canvas->concat(m);
1543    }
1544    // Apply any gesture matrix
1545    m.preConcat(fGesture.localM());
1546    m.preConcat(fGesture.globalM());
1547
1548    this->setLocalMatrix(m);
1549
1550    this->updateTitle();
1551    this->inval(NULL);
1552}
1553bool SampleWindow::previousSample() {
1554    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1555    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1556                                     fTransitionPrev));
1557    return true;
1558}
1559
1560bool SampleWindow::nextSample() {
1561    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1562    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1563                                     fTransitionNext));
1564    return true;
1565}
1566
1567bool SampleWindow::goToSample(int i) {
1568    fCurrIndex = (i) % fSamples.count();
1569    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1570    return true;
1571}
1572
1573SkString SampleWindow::getSampleTitle(int i) {
1574    SkView* view = (*fSamples[i])();
1575    SkString title;
1576    SampleCode::RequestTitle(view, &title);
1577    view->unref();
1578    return title;
1579}
1580
1581int SampleWindow::sampleCount() {
1582    return fSamples.count();
1583}
1584
1585void SampleWindow::showOverview() {
1586    this->loadView(create_transition(curr_view(this),
1587                                     create_overview(fSamples.count(), fSamples.begin()),
1588                                     4));
1589}
1590
1591void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1592    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1593                                              fFilterState, fHintingState))->unref();
1594}
1595
1596void SampleWindow::postAnimatingEvent() {
1597    if (fAnimating) {
1598        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1599    }
1600}
1601
1602bool SampleWindow::onEvent(const SkEvent& evt) {
1603    if (evt.isType(gUpdateWindowTitleEvtName)) {
1604        this->updateTitle();
1605        return true;
1606    }
1607    if (evt.isType(ANIMATING_EVENTTYPE)) {
1608        if (fAnimating) {
1609            this->nextSample();
1610            this->postAnimatingEvent();
1611        }
1612        return true;
1613    }
1614    if (evt.isType("replace-transition-view")) {
1615        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1616        return true;
1617    }
1618    if (evt.isType("set-curr-index")) {
1619        this->goToSample(evt.getFast32());
1620        return true;
1621    }
1622    if (isInvalEvent(evt)) {
1623        this->inval(NULL);
1624        return true;
1625    }
1626    int selected = -1;
1627    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1628        this->setDeviceType((DeviceType)selected);
1629        return true;
1630    }
1631    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1632#ifdef PIPE_NET
1633        if (!fPipeState != SkOSMenu::kOnState)
1634            gServer.disconnectAll();
1635#endif
1636        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1637        this->updateTitle();
1638        this->inval(NULL);
1639        return true;
1640    }
1641    if (SkOSMenu::FindTriState(evt, "Tiling", &fTilingState)) {
1642        int nx = 1, ny = 1;
1643        switch (fTilingState) {
1644            case SkOSMenu::kOffState:   nx = 1; ny = 1; break;
1645            case SkOSMenu::kMixedState: nx = 1; ny = 16; break;
1646            case SkOSMenu::kOnState:    nx = 4; ny = 4; break;
1647        }
1648        fTileCount.set(nx, ny);
1649        this->inval(NULL);
1650        return true;
1651    }
1652    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1653        this->toggleSlideshow();
1654        return true;
1655    }
1656    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1657        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1658        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1659        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1660        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1661        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1662        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1663        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1664        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1665        this->inval(NULL);
1666        this->updateTitle();
1667        return true;
1668    }
1669    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1670        fFlipAxis ^= kFlipAxis_X;
1671        this->updateMatrix();
1672        return true;
1673    }
1674    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1675        fFlipAxis ^= kFlipAxis_Y;
1676        this->updateMatrix();
1677        return true;
1678    }
1679    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1680        this->saveToPdf();
1681        return true;
1682    }
1683#ifdef DEBUGGER
1684    if (SkOSMenu::FindSwitchState(evt, "Debugger", &fDebugger)) {
1685        if (fDebugger) {
1686            fPipeState = SkOSMenu::kOnState;
1687            (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1688        } else {
1689            this->loadView((*fSamples[fCurrIndex])());
1690        }
1691        this->inval(NULL);
1692        return true;
1693    }
1694#endif
1695    return this->INHERITED::onEvent(evt);
1696}
1697
1698bool SampleWindow::onQuery(SkEvent* query) {
1699    if (query->isType("get-slide-count")) {
1700        query->setFast32(fSamples.count());
1701        return true;
1702    }
1703    if (query->isType("get-slide-title")) {
1704        SkView* view = (*fSamples[query->getFast32()])();
1705        SkEvent evt(gTitleEvtName);
1706        if (view->doQuery(&evt)) {
1707            query->setString("title", evt.findString(gTitleEvtName));
1708        }
1709        SkSafeUnref(view);
1710        return true;
1711    }
1712    if (query->isType("use-fast-text")) {
1713        SkEvent evt(gFastTextEvtName);
1714        return curr_view(this)->doQuery(&evt);
1715    }
1716    if (query->isType("ignore-window-bitmap")) {
1717        query->setFast32(this->getGrContext() != NULL);
1718        return true;
1719    }
1720    return this->INHERITED::onQuery(query);
1721}
1722
1723#if 0 // UNUSED
1724static void cleanup_for_filename(SkString* name) {
1725    char* str = name->writable_str();
1726    for (size_t i = 0; i < name->size(); i++) {
1727        switch (str[i]) {
1728            case ':': str[i] = '-'; break;
1729            case '/': str[i] = '-'; break;
1730            case ' ': str[i] = '_'; break;
1731            default: break;
1732        }
1733    }
1734}
1735#endif
1736
1737//extern bool gIgnoreFastBlurRect;
1738
1739bool SampleWindow::onHandleChar(SkUnichar uni) {
1740    {
1741        SkView* view = curr_view(this);
1742        if (view) {
1743            SkEvent evt(gCharEvtName);
1744            evt.setFast32(uni);
1745            if (view->doQuery(&evt)) {
1746                return true;
1747            }
1748        }
1749    }
1750
1751    int dx = 0xFF;
1752    int dy = 0xFF;
1753
1754    switch (uni) {
1755        case '5': dx =  0; dy =  0; break;
1756        case '8': dx =  0; dy = -1; break;
1757        case '6': dx =  1; dy =  0; break;
1758        case '2': dx =  0; dy =  1; break;
1759        case '4': dx = -1; dy =  0; break;
1760        case '7': dx = -1; dy = -1; break;
1761        case '9': dx =  1; dy = -1; break;
1762        case '3': dx =  1; dy =  1; break;
1763        case '1': dx = -1; dy =  1; break;
1764
1765        default:
1766            break;
1767    }
1768
1769    if (0xFF != dx && 0xFF != dy) {
1770        if ((dx | dy) == 0) {
1771            fScrollTestX = fScrollTestY = 0;
1772        } else {
1773            fScrollTestX += dx;
1774            fScrollTestY += dy;
1775        }
1776        this->inval(NULL);
1777        return true;
1778    }
1779
1780    switch (uni) {
1781        case 'B':
1782//            gIgnoreFastBlurRect = !gIgnoreFastBlurRect;
1783            this->inval(NULL);
1784            break;
1785
1786        case 'f':
1787            // only
1788            toggleFPS();
1789            break;
1790        case 'g':
1791            fRequestGrabImage = true;
1792            this->inval(NULL);
1793            break;
1794        case 'G':
1795            gShowGMBounds = !gShowGMBounds;
1796            postEventToSink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1797                            curr_view(this));
1798            this->inval(NULL);
1799            break;
1800        case 'i':
1801            this->zoomIn();
1802            break;
1803        case 'o':
1804            this->zoomOut();
1805            break;
1806        case 'r':
1807            fRotate = !fRotate;
1808            this->inval(NULL);
1809            this->updateTitle();
1810            return true;
1811        case 'k':
1812            fPerspAnim = !fPerspAnim;
1813            this->inval(NULL);
1814            this->updateTitle();
1815            return true;
1816#if SK_SUPPORT_GPU
1817        case '\\':
1818            this->setDeviceType(kNullGPU_DeviceType);
1819            this->inval(NULL);
1820            this->updateTitle();
1821            return true;
1822        case 'p':
1823            {
1824                GrContext* grContext = this->getGrContext();
1825                if (grContext) {
1826                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1827                    grContext->freeGpuResources();
1828                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1829                             cacheBytes);
1830                }
1831            }
1832            return true;
1833#endif
1834        case 's':
1835            fScale = !fScale;
1836            this->inval(NULL);
1837            this->updateTitle();
1838            return true;
1839        default:
1840            break;
1841    }
1842
1843    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1844        this->onUpdateMenu(fAppMenu);
1845        this->onUpdateMenu(fSlideMenu);
1846        return true;
1847    }
1848    return this->INHERITED::onHandleChar(uni);
1849}
1850
1851void SampleWindow::setDeviceType(DeviceType type) {
1852    if (type == fDeviceType)
1853        return;
1854
1855    fDevManager->tearDownBackend(this);
1856
1857    fDeviceType = type;
1858
1859    fDevManager->setUpBackend(this, fMSAASampleCount);
1860
1861    this->updateTitle();
1862    this->inval(NULL);
1863}
1864
1865void SampleWindow::toggleSlideshow() {
1866    fAnimating = !fAnimating;
1867    this->postAnimatingEvent();
1868    this->updateTitle();
1869}
1870
1871void SampleWindow::toggleRendering() {
1872    this->setDeviceType(cycle_devicetype(fDeviceType));
1873    this->updateTitle();
1874    this->inval(NULL);
1875}
1876
1877void SampleWindow::toggleFPS() {
1878    fMeasureFPS = !fMeasureFPS;
1879    this->updateTitle();
1880    this->inval(NULL);
1881}
1882
1883#include "SkDumpCanvas.h"
1884
1885bool SampleWindow::onHandleKey(SkKey key) {
1886    {
1887        SkView* view = curr_view(this);
1888        if (view) {
1889            SkEvent evt(gKeyEvtName);
1890            evt.setFast32(key);
1891            if (view->doQuery(&evt)) {
1892                return true;
1893            }
1894        }
1895    }
1896    switch (key) {
1897        case kRight_SkKey:
1898            if (this->nextSample()) {
1899                return true;
1900            }
1901            break;
1902        case kLeft_SkKey:
1903            if (this->previousSample()) {
1904                return true;
1905            }
1906            return true;
1907        case kUp_SkKey:
1908            if (USE_ARROWS_FOR_ZOOM) {
1909                this->changeZoomLevel(1.f);
1910            } else {
1911                fNClip = !fNClip;
1912                this->inval(NULL);
1913                this->updateTitle();
1914            }
1915            return true;
1916        case kDown_SkKey:
1917            if (USE_ARROWS_FOR_ZOOM) {
1918                this->changeZoomLevel(-1.f);
1919            } else {
1920                this->setConfig(cycle_configs(this->getBitmap().config()));
1921                this->updateTitle();
1922            }
1923            return true;
1924        case kOK_SkKey: {
1925            SkString title;
1926            if (curr_title(this, &title)) {
1927                writeTitleToPrefs(title.c_str());
1928            }
1929            return true;
1930        }
1931        case kBack_SkKey:
1932            this->showOverview();
1933            return true;
1934        default:
1935            break;
1936    }
1937    return this->INHERITED::onHandleKey(key);
1938}
1939
1940///////////////////////////////////////////////////////////////////////////////
1941
1942static const char gGestureClickType[] = "GestureClickType";
1943
1944bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1945        void* owner) {
1946    if (Click::kMoved_State == state) {
1947        updatePointer(x, y);
1948    }
1949    int w = SkScalarRound(this->width());
1950    int h = SkScalarRound(this->height());
1951
1952    // check for the resize-box
1953    if (w - x < 16 && h - y < 16) {
1954        return false;   // let the OS handle the click
1955    }
1956    else if (fMagnify) {
1957        //it's only necessary to update the drawing if there's a click
1958        this->inval(NULL);
1959        return false; //prevent dragging while magnify is enabled
1960    }
1961    else {
1962        return this->INHERITED::onDispatchClick(x, y, state, owner);
1963    }
1964}
1965
1966class GestureClick : public SkView::Click {
1967public:
1968    GestureClick(SkView* target) : SkView::Click(target) {
1969        this->setType(gGestureClickType);
1970    }
1971
1972    static bool IsGesture(Click* click) {
1973        return click->isType(gGestureClickType);
1974    }
1975};
1976
1977SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1978    return new GestureClick(this);
1979}
1980
1981bool SampleWindow::onClick(Click* click) {
1982    if (GestureClick::IsGesture(click)) {
1983        float x = static_cast<float>(click->fICurr.fX);
1984        float y = static_cast<float>(click->fICurr.fY);
1985
1986        switch (click->fState) {
1987            case SkView::Click::kDown_State:
1988                fGesture.touchBegin(click->fOwner, x, y);
1989                break;
1990            case SkView::Click::kMoved_State:
1991                fGesture.touchMoved(click->fOwner, x, y);
1992                this->updateMatrix();
1993                break;
1994            case SkView::Click::kUp_State:
1995                fGesture.touchEnd(click->fOwner);
1996                this->updateMatrix();
1997                break;
1998        }
1999        return true;
2000    }
2001    return false;
2002}
2003
2004///////////////////////////////////////////////////////////////////////////////
2005
2006void SampleWindow::loadView(SkView* view) {
2007    SkView::F2BIter iter(this);
2008    SkView* prev = iter.next();
2009    if (prev) {
2010        prev->detachFromParent();
2011    }
2012
2013    view->setVisibleP(true);
2014    view->setClipToBounds(false);
2015    this->attachChildToFront(view)->unref();
2016    view->setSize(this->width(), this->height());
2017
2018    //repopulate the slide menu when a view is loaded
2019    fSlideMenu->reset();
2020#ifdef DEBUGGER
2021    if (!is_debugger(view) && !is_overview(view) && !is_transition(view) && fDebugger) {
2022        //Force Pipe to be on if using debugger
2023        fPipeState = SkOSMenu::kOnState;
2024    }
2025#endif
2026    (void)SampleView::SetUsePipe(view, fPipeState);
2027    if (SampleView::IsSampleView(view))
2028        ((SampleView*)view)->requestMenu(fSlideMenu);
2029    this->onUpdateMenu(fSlideMenu);
2030    this->updateTitle();
2031}
2032
2033static const char* gConfigNames[] = {
2034    "unknown config",
2035    "A1",
2036    "A8",
2037    "Index8",
2038    "565",
2039    "4444",
2040    "8888"
2041};
2042
2043static const char* configToString(SkBitmap::Config c) {
2044    return gConfigNames[c];
2045}
2046
2047static const char* gDeviceTypePrefix[] = {
2048    "raster: ",
2049    "picture: ",
2050#if SK_SUPPORT_GPU
2051    "opengl: ",
2052#if SK_ANGLE
2053    "angle: ",
2054#endif // SK_ANGLE
2055    "null-gl: "
2056#endif // SK_SUPPORT_GPU
2057};
2058SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2059                  array_size_mismatch);
2060
2061static const bool gDeviceTypeIsGPU[] = {
2062    false,
2063    false,
2064#if SK_SUPPORT_GPU
2065    true,
2066#if SK_ANGLE
2067    true,
2068#endif // SK_ANGLE
2069    true
2070#endif // SK_SUPPORT_GPU
2071};
2072SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypeIsGPU) == SampleWindow::kDeviceTypeCnt,
2073                  array_size_mismatch);
2074
2075
2076static const char* trystate_str(SkOSMenu::TriState state,
2077                                const char trueStr[], const char falseStr[]) {
2078    if (SkOSMenu::kOnState == state) {
2079        return trueStr;
2080    } else if (SkOSMenu::kOffState == state) {
2081        return falseStr;
2082    }
2083    return NULL;
2084}
2085
2086void SampleWindow::updateTitle() {
2087    SkView* view = curr_view(this);
2088
2089    SkString title;
2090    if (!curr_title(this, &title)) {
2091        title.set("<unknown>");
2092    }
2093
2094    title.prepend(gDeviceTypePrefix[fDeviceType]);
2095
2096    title.prepend(" ");
2097    title.prepend(configToString(this->getBitmap().config()));
2098
2099    if (fAnimating) {
2100        title.prepend("<A> ");
2101    }
2102    if (fScale) {
2103        title.prepend("<S> ");
2104    }
2105    if (fRotate) {
2106        title.prepend("<R> ");
2107    }
2108    if (fNClip) {
2109        title.prepend("<C> ");
2110    }
2111    if (fPerspAnim) {
2112        title.prepend("<K> ");
2113    }
2114
2115    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2116    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2117    title.prepend(trystate_str(fFilterState, "H ", "h "));
2118    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2119    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2120
2121    if (fZoomLevel) {
2122        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2123    }
2124
2125    if (fMeasureFPS) {
2126        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2127    }
2128    if (SampleView::IsSampleView(view)) {
2129        switch (fPipeState) {
2130            case SkOSMenu::kOnState:
2131                title.prepend("<Pipe> ");
2132                break;
2133            case SkOSMenu::kMixedState:
2134                title.prepend("<Tiled Pipe> ");
2135                break;
2136
2137            default:
2138                break;
2139        }
2140        title.prepend("! ");
2141    }
2142
2143#if SK_SUPPORT_GPU
2144    if (gDeviceTypeIsGPU[fDeviceType] &&
2145        NULL != fDevManager &&
2146        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2147        title.appendf(" [MSAA: %d]",
2148                       fDevManager->getGrRenderTarget()->numSamples());
2149    }
2150#endif
2151
2152    this->setTitle(title.c_str());
2153}
2154
2155void SampleWindow::onSizeChange() {
2156    this->INHERITED::onSizeChange();
2157
2158    SkView::F2BIter iter(this);
2159    SkView* view = iter.next();
2160    view->setSize(this->width(), this->height());
2161
2162    // rebuild our clippath
2163    {
2164        const SkScalar W = this->width();
2165        const SkScalar H = this->height();
2166
2167        fClipPath.reset();
2168#if 0
2169        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2170            SkRect r;
2171            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2172            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2173                fClipPath.addRect(r);
2174        }
2175#else
2176        SkRect r;
2177        r.set(0, 0, W, H);
2178        fClipPath.addRect(r, SkPath::kCCW_Direction);
2179        r.set(W/4, H/4, W*3/4, H*3/4);
2180        fClipPath.addRect(r, SkPath::kCW_Direction);
2181#endif
2182    }
2183
2184    fZoomCenterX = SkScalarHalf(this->width());
2185    fZoomCenterY = SkScalarHalf(this->height());
2186
2187#ifdef SK_BUILD_FOR_ANDROID
2188    // FIXME: The first draw after a size change does not work on Android, so
2189    // we post an invalidate.
2190    this->postInvalDelay();
2191#endif
2192    this->updateTitle();    // to refresh our config
2193    fDevManager->windowSizeChanged(this);
2194}
2195
2196///////////////////////////////////////////////////////////////////////////////
2197
2198static const char is_sample_view_tag[] = "sample-is-sample-view";
2199static const char repeat_count_tag[] = "sample-set-repeat-count";
2200static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2201
2202bool SampleView::IsSampleView(SkView* view) {
2203    SkEvent evt(is_sample_view_tag);
2204    return view->doQuery(&evt);
2205}
2206
2207bool SampleView::SetRepeatDraw(SkView* view, int count) {
2208    SkEvent evt(repeat_count_tag);
2209    evt.setFast32(count);
2210    return view->doEvent(evt);
2211}
2212
2213bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2214    SkEvent evt;
2215    evt.setS32(set_use_pipe_tag, state);
2216    return view->doEvent(evt);
2217}
2218
2219bool SampleView::onEvent(const SkEvent& evt) {
2220    if (evt.isType(repeat_count_tag)) {
2221        fRepeatCount = evt.getFast32();
2222        return true;
2223    }
2224    int32_t pipeHolder;
2225    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2226        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2227        return true;
2228    }
2229    return this->INHERITED::onEvent(evt);
2230}
2231
2232bool SampleView::onQuery(SkEvent* evt) {
2233    if (evt->isType(is_sample_view_tag)) {
2234        return true;
2235    }
2236    return this->INHERITED::onQuery(evt);
2237}
2238
2239
2240class SimplePC : public SkGPipeController {
2241public:
2242    SimplePC(SkCanvas* target);
2243    ~SimplePC();
2244
2245    virtual void* requestBlock(size_t minRequest, size_t* actual);
2246    virtual void notifyWritten(size_t bytes);
2247
2248private:
2249    SkGPipeReader   fReader;
2250    void*           fBlock;
2251    size_t          fBlockSize;
2252    size_t          fBytesWritten;
2253    int             fAtomsWritten;
2254    SkGPipeReader::Status   fStatus;
2255
2256    size_t        fTotalWritten;
2257};
2258
2259SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2260    fBlock = NULL;
2261    fBlockSize = fBytesWritten = 0;
2262    fStatus = SkGPipeReader::kDone_Status;
2263    fTotalWritten = 0;
2264    fAtomsWritten = 0;
2265}
2266
2267SimplePC::~SimplePC() {
2268//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2269    if (fTotalWritten) {
2270        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2271                 fAtomsWritten, fStatus);
2272#ifdef  PIPE_FILE
2273        //File is open in append mode
2274        FILE* f = fopen(FILE_PATH, "ab");
2275        SkASSERT(f != NULL);
2276        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2277        fclose(f);
2278#endif
2279#ifdef PIPE_NET
2280        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2281            gServer.acceptConnections();
2282            gServer.writePacket(fBlock, fTotalWritten);
2283        }
2284#endif
2285#ifdef  DEBUGGER
2286        gTempDataStore.reset();
2287        gTempDataStore.append(fTotalWritten, (const char*)fBlock);
2288#endif
2289    }
2290    sk_free(fBlock);
2291}
2292
2293void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2294    sk_free(fBlock);
2295
2296    fBlockSize = minRequest * 4;
2297    fBlock = sk_malloc_throw(fBlockSize);
2298    fBytesWritten = 0;
2299    *actual = fBlockSize;
2300    return fBlock;
2301}
2302
2303void SimplePC::notifyWritten(size_t bytes) {
2304    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2305    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2306    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2307    fBytesWritten += bytes;
2308    fTotalWritten += bytes;
2309
2310    fAtomsWritten += 1;
2311}
2312
2313void SampleView::draw(SkCanvas* canvas) {
2314    if (SkOSMenu::kOffState == fPipeState) {
2315        this->INHERITED::draw(canvas);
2316    } else {
2317        SkGPipeWriter writer;
2318        SimplePC controller(canvas);
2319        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2320                               &canvas->getTotalMatrix());
2321        SkGPipeController* pc;
2322        if (SkOSMenu::kMixedState == fPipeState) {
2323            pc = &tc;
2324        } else {
2325            pc = &controller;
2326        }
2327        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2328
2329        canvas = writer.startRecording(pc, flags);
2330        //Must draw before controller goes out of scope and sends data
2331        this->INHERITED::draw(canvas);
2332        //explicitly end recording to ensure writer is flushed before the memory
2333        //is freed in the deconstructor of the controller
2334        writer.endRecording();
2335    }
2336}
2337void SampleView::onDraw(SkCanvas* canvas) {
2338    this->onDrawBackground(canvas);
2339
2340    for (int i = 0; i < fRepeatCount; i++) {
2341        SkAutoCanvasRestore acr(canvas, true);
2342        this->onDrawContent(canvas);
2343    }
2344}
2345
2346void SampleView::onDrawBackground(SkCanvas* canvas) {
2347    canvas->drawColor(fBGColor);
2348}
2349
2350///////////////////////////////////////////////////////////////////////////////
2351
2352template <typename T> void SkTBSort(T array[], int count) {
2353    for (int i = 1; i < count - 1; i++) {
2354        bool didSwap = false;
2355        for (int j = count - 1; j > i; --j) {
2356            if (array[j] < array[j-1]) {
2357                T tmp(array[j-1]);
2358                array[j-1] = array[j];
2359                array[j] = tmp;
2360                didSwap = true;
2361            }
2362        }
2363        if (!didSwap) {
2364            break;
2365        }
2366    }
2367
2368    for (int k = 0; k < count - 1; k++) {
2369        SkASSERT(!(array[k+1] < array[k]));
2370    }
2371}
2372
2373#include "SkRandom.h"
2374
2375static void rand_rect(SkIRect* rect, SkRandom& rand) {
2376    int bits = 8;
2377    int shift = 32 - bits;
2378    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2379              rand.nextU() >> shift, rand.nextU() >> shift);
2380    rect->sort();
2381}
2382
2383static void dumpRect(const SkIRect& r) {
2384    SkDebugf(" { %d, %d, %d, %d },\n",
2385             r.fLeft, r.fTop,
2386             r.fRight, r.fBottom);
2387}
2388
2389static void test_rects(const SkIRect rect[], int count) {
2390    SkRegion rgn0, rgn1;
2391
2392    for (int i = 0; i < count; i++) {
2393        rgn0.op(rect[i], SkRegion::kUnion_Op);
2394     //   dumpRect(rect[i]);
2395    }
2396    rgn1.setRects(rect, count);
2397
2398    if (rgn0 != rgn1) {
2399        SkDebugf("\n");
2400        for (int i = 0; i < count; i++) {
2401            dumpRect(rect[i]);
2402        }
2403        SkDebugf("\n");
2404    }
2405}
2406
2407static void test() {
2408    size_t i;
2409
2410    const SkIRect r0[] = {
2411        { 0, 0, 1, 1 },
2412        { 2, 2, 3, 3 },
2413    };
2414    const SkIRect r1[] = {
2415        { 0, 0, 1, 3 },
2416        { 1, 1, 2, 2 },
2417        { 2, 0, 3, 3 },
2418    };
2419    const SkIRect r2[] = {
2420        { 0, 0, 1, 2 },
2421        { 2, 1, 3, 3 },
2422        { 4, 0, 5, 1 },
2423        { 6, 0, 7, 4 },
2424    };
2425
2426    static const struct {
2427        const SkIRect* fRects;
2428        int            fCount;
2429    } gRecs[] = {
2430        { r0, SK_ARRAY_COUNT(r0) },
2431        { r1, SK_ARRAY_COUNT(r1) },
2432        { r2, SK_ARRAY_COUNT(r2) },
2433    };
2434
2435    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2436        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2437    }
2438
2439    SkRandom rand;
2440    for (i = 0; i < 10000; i++) {
2441        SkRegion rgn0, rgn1;
2442
2443        const int N = 8;
2444        SkIRect rect[N];
2445        for (int j = 0; j < N; j++) {
2446            rand_rect(&rect[j], rand);
2447        }
2448        test_rects(rect, N);
2449    }
2450}
2451
2452// FIXME: this should be in a header
2453SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2454SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2455    if (false) { // avoid bit rot, suppress warning
2456        test();
2457    }
2458    return new SampleWindow(hwnd, argc, argv, NULL);
2459}
2460
2461// FIXME: this should be in a header
2462void get_preferred_size(int* x, int* y, int* width, int* height);
2463void get_preferred_size(int* x, int* y, int* width, int* height) {
2464    *x = 10;
2465    *y = 50;
2466    *width = 640;
2467    *height = 480;
2468}
2469
2470#ifdef SK_BUILD_FOR_IOS
2471void save_args(int argc, char *argv[]) {
2472}
2473#endif
2474
2475// FIXME: this should be in a header
2476void application_init();
2477void application_init() {
2478//    setenv("ANDROID_ROOT", "../../../data", 0);
2479#ifdef SK_BUILD_FOR_MAC
2480    setenv("ANDROID_ROOT", "/android/device/data", 0);
2481#endif
2482    SkGraphics::Init();
2483    SkEvent::Init();
2484}
2485
2486// FIXME: this should be in a header
2487void application_term();
2488void application_term() {
2489    SkEvent::Term();
2490    SkGraphics::Term();
2491}
2492