SampleApp.cpp revision cf9faf6ce9e3351b4d4030753eb43c8cd2010e0c 
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 USE_ARROWS_FOR_ZOOM true
68
69#if SK_ANGLE
70//#define DEFAULT_TO_ANGLE 1
71#else
72//#define DEFAULT_TO_GPU 1
73#endif
74
75#define ANIMATING_EVENTTYPE "nextSample"
76#define ANIMATING_DELAY     750
77
78#ifdef SK_DEBUG
79    #define FPS_REPEAT_MULTIPLIER   1
80#else
81    #define FPS_REPEAT_MULTIPLIER   10
82#endif
83#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
84
85static SampleWindow* gSampleWindow;
86
87static bool gShowGMBounds;
88
89static void postEventToSink(SkEvent* evt, SkEventSink* sink) {
90    evt->setTargetID(sink->getSinkID())->post();
91}
92
93///////////////////////////////////////////////////////////////////////////////
94
95static const char* skip_until(const char* str, const char* skip) {
96    if (!str) {
97        return NULL;
98    }
99    return strstr(str, skip);
100}
101
102static const char* skip_past(const char* str, const char* skip) {
103    const char* found = skip_until(str, skip);
104    if (!found) {
105        return NULL;
106    }
107    return found + strlen(skip);
108}
109
110static const char* gPrefFileName = "sampleapp_prefs.txt";
111
112static bool readTitleFromPrefs(SkString* title) {
113    SkFILEStream stream(gPrefFileName);
114    if (!stream.isValid()) {
115        return false;
116    }
117
118    int len = stream.getLength();
119    SkString data(len);
120    stream.read(data.writable_str(), len);
121    const char* s = data.c_str();
122
123    s = skip_past(s, "curr-slide-title");
124    s = skip_past(s, "=");
125    s = skip_past(s, "\"");
126    const char* stop = skip_until(s, "\"");
127    if (stop > s) {
128        title->set(s, stop - s);
129        return true;
130    }
131    return false;
132}
133
134static void writeTitleToPrefs(const char* title) {
135    SkFILEWStream stream(gPrefFileName);
136    SkString data;
137    data.printf("curr-slide-title = \"%s\"\n", title);
138    stream.write(data.c_str(), data.size());
139}
140
141///////////////////////////////////////////////////////////////////////////////
142
143class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
144public:
145
146    DefaultDeviceManager() {
147#if SK_SUPPORT_GPU
148        fCurContext = NULL;
149        fCurIntf = NULL;
150        fCurRenderTarget = NULL;
151        fMSAASampleCount = 0;
152#endif
153        fBackend = kNone_BackEndType;
154    }
155
156    virtual ~DefaultDeviceManager() {
157#if SK_SUPPORT_GPU
158        SkSafeUnref(fCurContext);
159        SkSafeUnref(fCurIntf);
160        SkSafeUnref(fCurRenderTarget);
161#endif
162    }
163
164    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
165        SkASSERT(kNone_BackEndType == fBackend);
166
167        fBackend = kNone_BackEndType;
168
169#if SK_SUPPORT_GPU
170        switch (win->getDeviceType()) {
171            case kRaster_DeviceType:
172                // fallthrough
173            case kPicture_DeviceType:
174                // fallthrough
175            case kGPU_DeviceType:
176                // fallthrough
177            case kNullGPU_DeviceType:
178                // all these guys use the native backend
179                fBackend = kNativeGL_BackEndType;
180                break;
181#if SK_ANGLE
182            case kANGLE_DeviceType:
183                // ANGLE is really the only odd man out
184                fBackend = kANGLE_BackEndType;
185                break;
186#endif // SK_ANGLE
187            default:
188                SkASSERT(false);
189                break;
190        }
191
192        bool result = win->attach(fBackend, msaaSampleCount);
193        if (!result) {
194            SkDebugf("Failed to initialize GL");
195            return;
196        }
197        fMSAASampleCount = msaaSampleCount;
198
199        SkASSERT(NULL == fCurIntf);
200        switch (win->getDeviceType()) {
201            case kRaster_DeviceType:
202                // fallthrough
203            case kPicture_DeviceType:
204                // fallthrough
205            case kGPU_DeviceType:
206                // all these guys use the native interface
207                fCurIntf = GrGLCreateNativeInterface();
208                break;
209#if SK_ANGLE
210            case kANGLE_DeviceType:
211                fCurIntf = GrGLCreateANGLEInterface();
212                break;
213#endif // SK_ANGLE
214            case kNullGPU_DeviceType:
215                fCurIntf = GrGLCreateNullInterface();
216                break;
217            default:
218                SkASSERT(false);
219                break;
220        }
221
222        SkASSERT(NULL == fCurContext);
223        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
224
225        if (NULL == fCurContext || NULL == fCurIntf) {
226            // We need some context and interface to see results
227            SkSafeUnref(fCurContext);
228            SkSafeUnref(fCurIntf);
229            SkDebugf("Failed to setup 3D");
230
231            win->detach();
232        }
233#endif // SK_SUPPORT_GPU
234        // call windowSizeChanged to create the render target
235        this->windowSizeChanged(win);
236    }
237
238    virtual void tearDownBackend(SampleWindow *win) {
239#if SK_SUPPORT_GPU
240        SkSafeUnref(fCurContext);
241        fCurContext = NULL;
242
243        SkSafeUnref(fCurIntf);
244        fCurIntf = NULL;
245
246        SkSafeUnref(fCurRenderTarget);
247        fCurRenderTarget = NULL;
248#endif
249        win->detach();
250        fBackend = kNone_BackEndType;
251    }
252
253    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
254                                   SampleWindow* win) {
255#if SK_SUPPORT_GPU
256        if (IsGpuDeviceType(dType) && NULL != fCurContext) {
257            SkAutoTUnref<SkDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
258            return new SkCanvas(device);
259        } else
260#endif
261        {
262            return NULL;
263        }
264    }
265
266    virtual void publishCanvas(SampleWindow::DeviceType dType,
267                               SkCanvas* canvas,
268                               SampleWindow* win) {
269#if SK_SUPPORT_GPU
270        if (fCurContext) {
271            // in case we have queued drawing calls
272            fCurContext->flush();
273
274            if (!IsGpuDeviceType(dType)) {
275                // need to send the raster bits to the (gpu) window
276                fCurContext->setRenderTarget(fCurRenderTarget);
277                const SkBitmap& bm = win->getBitmap();
278                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
279                                             kSkia8888_PM_GrPixelConfig,
280                                             bm.getPixels(),
281                                             bm.rowBytes());
282            }
283        }
284#endif
285
286        win->present();
287    }
288
289    virtual void windowSizeChanged(SampleWindow* win) {
290#if SK_SUPPORT_GPU
291        if (fCurContext) {
292            win->attach(fBackend, fMSAASampleCount);
293
294            GrBackendRenderTargetDesc desc;
295            desc.fWidth = SkScalarRound(win->width());
296            desc.fHeight = SkScalarRound(win->height());
297            desc.fConfig = kSkia8888_PM_GrPixelConfig;
298            GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
299            GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
300            GrGLint buffer;
301            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
302            desc.fRenderTargetHandle = buffer;
303
304            SkSafeUnref(fCurRenderTarget);
305            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
306        }
307#endif
308    }
309
310    virtual GrContext* getGrContext() {
311#if SK_SUPPORT_GPU
312        return fCurContext;
313#else
314        return NULL;
315#endif
316    }
317
318    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
319#if SK_SUPPORT_GPU
320        return fCurRenderTarget;
321#else
322        return NULL;
323#endif
324    }
325
326private:
327
328#if SK_SUPPORT_GPU
329    GrContext*              fCurContext;
330    const GrGLInterface*    fCurIntf;
331    GrRenderTarget*         fCurRenderTarget;
332    int fMSAASampleCount;
333#endif
334
335    SkOSWindow::SkBackEndTypes fBackend;
336
337    typedef SampleWindow::DeviceManager INHERITED;
338};
339
340///////////////
341static const char view_inval_msg[] = "view-inval-msg";
342
343void SampleWindow::postInvalDelay() {
344    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
345}
346
347static bool isInvalEvent(const SkEvent& evt) {
348    return evt.isType(view_inval_msg);
349}
350//////////////////
351
352SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
353    : fCreateFunc(func) {
354}
355
356SkView* SkFuncViewFactory::operator() () const {
357    return (*fCreateFunc)();
358}
359
360#include "GMSampleView.h"
361
362SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
363    : fFunc(func) {
364}
365
366SkView* SkGMSampleViewFactory::operator() () const {
367    return new GMSampleView(fFunc(NULL));
368}
369
370SkViewRegister* SkViewRegister::gHead;
371SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
372    fFact->ref();
373    fChain = gHead;
374    gHead = this;
375}
376
377SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
378    fFact = new SkFuncViewFactory(func);
379    fChain = gHead;
380    gHead = this;
381}
382
383SkViewRegister::SkViewRegister(GMFactoryFunc func) {
384    fFact = new SkGMSampleViewFactory(func);
385    fChain = gHead;
386    gHead = this;
387}
388
389class AutoUnrefArray {
390public:
391    AutoUnrefArray() {}
392    ~AutoUnrefArray() {
393        int count = fObjs.count();
394        for (int i = 0; i < count; ++i) {
395            fObjs[i]->unref();
396        }
397    }
398    SkRefCnt*& push_back() { return *fObjs.append(); }
399
400private:
401    SkTDArray<SkRefCnt*> fObjs;
402};
403
404// registers GMs as Samples
405// This can't be performed during static initialization because it could be
406// run before GMRegistry has been fully built.
407static void SkGMRegistyToSampleRegistry() {
408    static bool gOnce;
409    static AutoUnrefArray fRegisters;
410
411    if (!gOnce) {
412        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
413        while (gmreg) {
414            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
415            gmreg = gmreg->next();
416        }
417        gOnce = true;
418    }
419}
420
421#if 0
422#include <CoreFoundation/CoreFoundation.h>
423#include <CoreFoundation/CFURLAccess.h>
424
425static void testpdf() {
426    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
427                                                 kCFStringEncodingUTF8);
428    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
429                                              kCFURLPOSIXPathStyle,
430                                              false);
431    CFRelease(path);
432    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
433    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
434    CFRelease(url);
435
436    CGContextBeginPage(cg, &box);
437    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
438    CGContextFillEllipseInRect(cg, r);
439    CGContextEndPage(cg);
440    CGContextRelease(cg);
441
442    if (false) {
443        SkBitmap bm;
444        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
445        bm.allocPixels();
446        bm.eraseColor(SK_ColorTRANSPARENT);
447
448        SkCanvas canvas(bm);
449
450    }
451}
452#endif
453
454//////////////////////////////////////////////////////////////////////////////
455
456enum FlipAxisEnum {
457    kFlipAxis_X = (1 << 0),
458    kFlipAxis_Y = (1 << 1)
459};
460
461#include "SkDrawFilter.h"
462
463class FlagsDrawFilter : public SkDrawFilter {
464public:
465    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
466                    SkOSMenu::TriState hinting) :
467        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
468
469    virtual bool filter(SkPaint* paint, Type t) {
470        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
471            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
472        }
473        if (SkOSMenu::kMixedState != fAAState) {
474            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
475        }
476        if (SkOSMenu::kMixedState != fFilterState) {
477            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
478        }
479        if (SkOSMenu::kMixedState != fHintingState) {
480            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
481                              SkPaint::kNormal_Hinting :
482                              SkPaint::kSlight_Hinting);
483        }
484        return true;
485    }
486
487private:
488    SkOSMenu::TriState  fLCDState;
489    SkOSMenu::TriState  fAAState;
490    SkOSMenu::TriState  fFilterState;
491    SkOSMenu::TriState  fHintingState;
492};
493
494//////////////////////////////////////////////////////////////////////////////
495
496#define MAX_ZOOM_LEVEL  8
497#define MIN_ZOOM_LEVEL  -8
498
499static const char gCharEvtName[] = "SampleCode_Char_Event";
500static const char gKeyEvtName[] = "SampleCode_Key_Event";
501static const char gTitleEvtName[] = "SampleCode_Title_Event";
502static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
503static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
504static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
505
506bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
507    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
508        if (outUni) {
509            *outUni = evt.getFast32();
510        }
511        return true;
512    }
513    return false;
514}
515
516bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
517    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
518        if (outKey) {
519            *outKey = (SkKey)evt.getFast32();
520        }
521        return true;
522    }
523    return false;
524}
525
526bool SampleCode::TitleQ(const SkEvent& evt) {
527    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
528}
529
530void SampleCode::TitleR(SkEvent* evt, const char title[]) {
531    SkASSERT(evt && TitleQ(*evt));
532    evt->setString(gTitleEvtName, title);
533}
534
535bool SampleCode::RequestTitle(SkView* view, SkString* title) {
536    SkEvent evt(gTitleEvtName);
537    if (view->doQuery(&evt)) {
538        title->set(evt.findString(gTitleEvtName));
539        return true;
540    }
541    return false;
542}
543
544bool SampleCode::PrefSizeQ(const SkEvent& evt) {
545    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
546}
547
548void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
549    SkASSERT(evt && PrefSizeQ(*evt));
550    SkScalar size[2];
551    size[0] = width;
552    size[1] = height;
553    evt->setScalars(gPrefSizeEvtName, 2, size);
554}
555
556bool SampleCode::FastTextQ(const SkEvent& evt) {
557    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
558}
559
560///////////////////////////////////////////////////////////////////////////////
561
562static SkMSec gAnimTime;
563static SkMSec gAnimTimePrev;
564
565SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
566SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
567SkScalar SampleCode::GetAnimSecondsDelta() {
568    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
569}
570
571SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
572    // since gAnimTime can be up to 32 bits, we can't convert it to a float
573    // or we'll lose the low bits. Hence we use doubles for the intermediate
574    // calculations
575    double seconds = (double)gAnimTime / 1000.0;
576    double value = SkScalarToDouble(speed) * seconds;
577    if (period) {
578        value = ::fmod(value, SkScalarToDouble(period));
579    }
580    return SkDoubleToScalar(value);
581}
582
583SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
584                                      SkScalar periodInSec,
585                                      SkScalar phaseInSec) {
586    if (!periodInSec) {
587        return 0;
588    }
589    double t = (double)gAnimTime / 1000.0 + phaseInSec;
590    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
591    amplitude = SK_ScalarHalf * amplitude;
592    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
593}
594
595GrContext* SampleCode::GetGr() {
596    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
597}
598
599// some GMs rely on having a skiagm::GetGr function defined
600namespace skiagm {
601    // FIXME: this should be moved into a header
602    GrContext* GetGr();
603    GrContext* GetGr() { return SampleCode::GetGr(); }
604}
605
606//////////////////////////////////////////////////////////////////////////////
607
608static SkView* curr_view(SkWindow* wind) {
609    SkView::F2BIter iter(wind);
610    return iter.next();
611}
612
613static bool curr_title(SkWindow* wind, SkString* title) {
614    SkView* view = curr_view(wind);
615    if (view) {
616        SkEvent evt(gTitleEvtName);
617        if (view->doQuery(&evt)) {
618            title->set(evt.findString(gTitleEvtName));
619            return true;
620        }
621    }
622    return false;
623}
624
625void SampleWindow::setZoomCenter(float x, float y)
626{
627    fZoomCenterX = SkFloatToScalar(x);
628    fZoomCenterY = SkFloatToScalar(y);
629}
630
631bool SampleWindow::zoomIn()
632{
633    // Arbitrarily decided
634    if (fFatBitsScale == 25) return false;
635    fFatBitsScale++;
636    this->inval(NULL);
637    return true;
638}
639
640bool SampleWindow::zoomOut()
641{
642    if (fFatBitsScale == 1) return false;
643    fFatBitsScale--;
644    this->inval(NULL);
645    return true;
646}
647
648void SampleWindow::updatePointer(int x, int y)
649{
650    fMouseX = x;
651    fMouseY = y;
652    if (fShowZoomer) {
653        this->inval(NULL);
654    }
655}
656
657static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
658    static const SampleWindow::DeviceType gCT[] = {
659        SampleWindow::kPicture_DeviceType,
660#if SK_SUPPORT_GPU
661        SampleWindow::kGPU_DeviceType,
662#if SK_ANGLE
663        SampleWindow::kANGLE_DeviceType,
664#endif // SK_ANGLE
665        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
666#endif // SK_SUPPORT_GPU
667        SampleWindow::kRaster_DeviceType
668    };
669    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
670    return gCT[ct];
671}
672
673static void usage(const char * argv0) {
674    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path]\n", argv0);
675    SkDebugf("    sampleName: sample at which to start.\n");
676    SkDebugf("    resourcePath: directory that stores image resources.\n");
677    SkDebugf("    msaa: request multisampling with the given sample count.\n");
678    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
679    SkDebugf("    path: path to skia picture\n");
680}
681
682SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
683    : INHERITED(hwnd)
684    , fDevManager(NULL) {
685
686    this->registerPictFileSamples(argv, argc);
687    this->registerPictFileSample(argv, argc);
688    SkGMRegistyToSampleRegistry();
689    {
690        const SkViewRegister* reg = SkViewRegister::Head();
691        while (reg) {
692            *fSamples.append() = reg->factory();
693            reg = reg->next();
694        }
695    }
696
697    const char* resourcePath = NULL;
698    fCurrIndex = -1;
699    fMSAASampleCount = 0;
700
701    const char* const commandName = argv[0];
702    char* const* stop = argv + argc;
703    for (++argv; argv < stop; ++argv) {
704        if (strcmp(*argv, "-i") == 0) {
705            argv++;
706            if (argv < stop && **argv) {
707                resourcePath = *argv;
708            }
709        } else if (strcmp(*argv, "--slide") == 0) {
710            argv++;
711            if (argv < stop && **argv) {
712                fCurrIndex = findByTitle(*argv);
713                if (fCurrIndex < 0) {
714                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
715                    listTitles();
716                }
717            }
718        } else if (strcmp(*argv, "--msaa") == 0) {
719            ++argv;
720            if (argv < stop && **argv) {
721                fMSAASampleCount = atoi(*argv);
722            }
723        } else if (strcmp(*argv, "--list") == 0) {
724            listTitles();
725        }
726        else {
727            usage(commandName);
728        }
729    }
730
731    if (fCurrIndex < 0) {
732        SkString title;
733        if (readTitleFromPrefs(&title)) {
734            fCurrIndex = findByTitle(title.c_str());
735        }
736    }
737
738    if (fCurrIndex < 0) {
739        fCurrIndex = 0;
740    }
741
742    gSampleWindow = this;
743
744#ifdef  PIPE_FILE
745    //Clear existing file or create file if it doesn't exist
746    FILE* f = fopen(FILE_PATH, "wb");
747    fclose(f);
748#endif
749
750    fPicture = NULL;
751
752    fDeviceType = kRaster_DeviceType;
753
754#if DEFAULT_TO_GPU
755    fDeviceType = kGPU_DeviceType;
756#endif
757#if SK_ANGLE && DEFAULT_TO_ANGLE
758    fDeviceType = kANGLE_DeviceType;
759#endif
760
761    fUseClip = false;
762    fNClip = false;
763    fAnimating = false;
764    fRotate = false;
765    fPerspAnim = false;
766    fPerspAnimTime = 0;
767    fScale = false;
768    fRequestGrabImage = false;
769    fPipeState = SkOSMenu::kOffState;
770    fTilingState = SkOSMenu::kOffState;
771    fTileCount.set(1, 1);
772    fMeasureFPS = false;
773    fLCDState = SkOSMenu::kMixedState;
774    fAAState = SkOSMenu::kMixedState;
775    fFilterState = SkOSMenu::kMixedState;
776    fHintingState = SkOSMenu::kMixedState;
777    fFlipAxis = 0;
778    fScrollTestX = fScrollTestY = 0;
779
780    fMouseX = fMouseY = 0;
781    fFatBitsScale = 8;
782    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
783    fShowZoomer = false;
784
785    fZoomLevel = 0;
786    fZoomScale = SK_Scalar1;
787
788    fMagnify = false;
789
790    fSaveToPdf = false;
791    fPdfCanvas = NULL;
792
793    fTransitionNext = 6;
794    fTransitionPrev = 2;
795
796    int sinkID = this->getSinkID();
797    fAppMenu = new SkOSMenu;
798    fAppMenu->setTitle("Global Settings");
799    int itemID;
800
801    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
802                                "Raster", "Picture", "OpenGL",
803#if SK_ANGLE
804                                "ANGLE",
805#endif
806                                NULL);
807    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
808    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
809    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
810    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
811    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
812    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
813    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
814    itemID = fAppMenu->appendTriState("Hinting", "Hinting", sinkID, fHintingState);
815    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
816
817    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
818                                                  fPipeState);
819    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
820
821    itemID = fAppMenu->appendTriState("Tiling", "Tiling", sinkID, fTilingState);
822    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
823
824    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
825    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
826    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
827    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
828    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
829    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
830    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
831    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
832    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
833    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
834    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
835    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
836    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
837                                fTransitionNext, "Up", "Up and Right", "Right",
838                                "Down and Right", "Down", "Down and Left",
839                                "Left", "Up and Left", NULL);
840    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
841    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
842                                fTransitionPrev, "Up", "Up and Right", "Right",
843                                "Down and Right", "Down", "Down and Left",
844                                "Left", "Up and Left", NULL);
845    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
846    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
847    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
848
849    this->addMenu(fAppMenu);
850    fSlideMenu = new SkOSMenu;
851    this->addMenu(fSlideMenu);
852
853//    this->setConfig(SkBitmap::kRGB_565_Config);
854    this->setConfig(SkBitmap::kARGB_8888_Config);
855    this->setVisibleP(true);
856    this->setClipToBounds(false);
857
858    skiagm::GM::SetResourcePath(resourcePath);
859
860    this->loadView((*fSamples[fCurrIndex])());
861
862    fPDFData = NULL;
863
864    if (NULL == devManager) {
865        fDevManager = new DefaultDeviceManager();
866    } else {
867        devManager->ref();
868        fDevManager = devManager;
869    }
870    fDevManager->setUpBackend(this, fMSAASampleCount);
871
872    // If another constructor set our dimensions, ensure that our
873    // onSizeChange gets called.
874    if (this->height() && this->width()) {
875        this->onSizeChange();
876    }
877
878    // can't call this synchronously, since it may require a subclass to
879    // to implement, or the caller may need us to have returned from the
880    // constructor first. Hence we post an event to ourselves.
881//    this->updateTitle();
882    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
883}
884
885SampleWindow::~SampleWindow() {
886    delete fPicture;
887    delete fPdfCanvas;
888    fTypeface->unref();
889
890    SkSafeUnref(fDevManager);
891}
892
893static void make_filepath(SkString* path, const char* dir, const SkString& name) {
894    size_t len = strlen(dir);
895    path->set(dir);
896    if (len > 0 && dir[len - 1] != '/') {
897        path->append("/");
898    }
899    path->append(name);
900}
901
902void SampleWindow::registerPictFileSample(char** argv, int argc) {
903    const char* pict = NULL;
904
905    for (int i = 0; i < argc; ++i) {
906        if (!strcmp(argv[i], "--picture")) {
907            i += 1;
908            if (i < argc) {
909                pict = argv[i];
910                break;
911            }
912        }
913    }
914    if (pict) {
915        SkString path(pict);
916        *fSamples.append() = new PictFileFactory(path);
917    }
918}
919
920void SampleWindow::registerPictFileSamples(char** argv, int argc) {
921    const char* pictDir = NULL;
922
923    for (int i = 0; i < argc; ++i) {
924        if (!strcmp(argv[i], "--pictureDir")) {
925            i += 1;
926            if (i < argc) {
927                pictDir = argv[i];
928                break;
929            }
930        }
931    }
932    if (pictDir) {
933        SkOSFile::Iter iter(pictDir, "skp");
934        SkString filename;
935        while (iter.next(&filename)) {
936            SkString path;
937            make_filepath(&path, pictDir, filename);
938            *fSamples.append() = new PictFileFactory(path);
939        }
940    }
941}
942
943int SampleWindow::findByTitle(const char title[]) {
944    int i, count = fSamples.count();
945    for (i = 0; i < count; i++) {
946        if (getSampleTitle(i).equals(title)) {
947            return i;
948        }
949    }
950    return -1;
951}
952
953void SampleWindow::listTitles() {
954    int count = fSamples.count();
955    SkDebugf("All Slides:\n");
956    for (int i = 0; i < count; i++) {
957        SkDebugf("    %s\n", getSampleTitle(i).c_str());
958    }
959}
960
961static SkBitmap capture_bitmap(SkCanvas* canvas) {
962    SkBitmap bm;
963    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
964    src.copyTo(&bm, src.config());
965    return bm;
966}
967
968static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
969                        SkBitmap* diff) {
970    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
971
972    SkAutoLockPixels alp0(src);
973    SkAutoLockPixels alp1(orig);
974    for (int y = 0; y < src.height(); y++) {
975        const void* srcP = src.getAddr(0, y);
976        const void* origP = orig.getAddr(0, y);
977        size_t bytes = src.width() * src.bytesPerPixel();
978        if (memcmp(srcP, origP, bytes)) {
979            SkDebugf("---------- difference on line %d\n", y);
980            return true;
981        }
982    }
983    return false;
984}
985
986static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
987{
988    SkColor desiredColor = paint.getColor();
989    paint.setColor(SK_ColorWHITE);
990    const char* c_str = string.c_str();
991    size_t size = string.size();
992    SkRect bounds;
993    paint.measureText(c_str, size, &bounds);
994    bounds.offset(left, top);
995    SkScalar inset = SkIntToScalar(-2);
996    bounds.inset(inset, inset);
997    canvas->drawRect(bounds, paint);
998    if (desiredColor != SK_ColorBLACK) {
999        paint.setColor(SK_ColorBLACK);
1000        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1001    }
1002    paint.setColor(desiredColor);
1003    canvas->drawText(c_str, size, left, top, paint);
1004}
1005
1006#define XCLIP_N  8
1007#define YCLIP_N  8
1008
1009void SampleWindow::draw(SkCanvas* canvas) {
1010    // update the animation time
1011    if (!gAnimTimePrev && !gAnimTime) {
1012        // first time make delta be 0
1013        gAnimTime = SkTime::GetMSecs();
1014        gAnimTimePrev = gAnimTime;
1015    } else {
1016        gAnimTimePrev = gAnimTime;
1017        gAnimTime = SkTime::GetMSecs();
1018    }
1019
1020    if (fGesture.isActive()) {
1021        this->updateMatrix();
1022    }
1023
1024    if (fMeasureFPS) {
1025        fMeasureFPS_Time = 0;
1026    }
1027
1028    if (fNClip) {
1029        this->INHERITED::draw(canvas);
1030        SkBitmap orig = capture_bitmap(canvas);
1031
1032        const SkScalar w = this->width();
1033        const SkScalar h = this->height();
1034        const SkScalar cw = w / XCLIP_N;
1035        const SkScalar ch = h / YCLIP_N;
1036        for (int y = 0; y < YCLIP_N; y++) {
1037            SkRect r;
1038            r.fTop = y * ch;
1039            r.fBottom = (y + 1) * ch;
1040            if (y == YCLIP_N - 1) {
1041                r.fBottom = h;
1042            }
1043            for (int x = 0; x < XCLIP_N; x++) {
1044                SkAutoCanvasRestore acr(canvas, true);
1045                r.fLeft = x * cw;
1046                r.fRight = (x + 1) * cw;
1047                if (x == XCLIP_N - 1) {
1048                    r.fRight = w;
1049                }
1050                canvas->clipRect(r);
1051                this->INHERITED::draw(canvas);
1052            }
1053        }
1054
1055        SkBitmap diff;
1056        if (bitmap_diff(canvas, orig, &diff)) {
1057        }
1058    } else {
1059        const SkScalar cw = SkScalarDiv(this->width(), SkIntToScalar(fTileCount.width()));
1060        const SkScalar ch = SkScalarDiv(this->height(), SkIntToScalar(fTileCount.height()));
1061
1062        for (int y = 0; y < fTileCount.height(); ++y) {
1063            for (int x = 0; x < fTileCount.width(); ++x) {
1064                SkAutoCanvasRestore acr(canvas, true);
1065                canvas->clipRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch));
1066                this->INHERITED::draw(canvas);
1067            }
1068        }
1069
1070        if (!fTileCount.equals(1, 1)) {
1071            SkPaint paint;
1072            paint.setColor(0x60FF00FF);
1073            paint.setStyle(SkPaint::kStroke_Style);
1074            for (int y = 0; y < fTileCount.height(); ++y) {
1075                for (int x = 0; x < fTileCount.width(); ++x) {
1076                    canvas->drawRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch), paint);
1077                }
1078            }
1079        }
1080    }
1081    if (fShowZoomer && !fSaveToPdf) {
1082        showZoomer(canvas);
1083    }
1084    if (fMagnify && !fSaveToPdf) {
1085        magnify(canvas);
1086    }
1087
1088    if (fMeasureFPS && fMeasureFPS_Time) {
1089        this->updateTitle();
1090        this->postInvalDelay();
1091    }
1092
1093    // do this last
1094    fDevManager->publishCanvas(fDeviceType, canvas, this);
1095}
1096
1097static float clipW = 200;
1098static float clipH = 200;
1099void SampleWindow::magnify(SkCanvas* canvas) {
1100    SkRect r;
1101    int count = canvas->save();
1102
1103    SkMatrix m = canvas->getTotalMatrix();
1104    if (!m.invert(&m)) {
1105        return;
1106    }
1107    SkPoint offset, center;
1108    SkScalar mouseX = fMouseX * SK_Scalar1;
1109    SkScalar mouseY = fMouseY * SK_Scalar1;
1110    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1111    m.mapXY(mouseX, mouseY, &center);
1112
1113    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1114    r.offset(offset.fX, offset.fY);
1115
1116    SkPaint paint;
1117    paint.setColor(0xFF66AAEE);
1118    paint.setStyle(SkPaint::kStroke_Style);
1119    paint.setStrokeWidth(10.f * m.getScaleX());
1120    //lense offset
1121    //canvas->translate(0, -250);
1122    canvas->drawRect(r, paint);
1123    canvas->clipRect(r);
1124
1125    m = canvas->getTotalMatrix();
1126    m.setTranslate(-center.fX, -center.fY);
1127    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1128    m.postTranslate(center.fX, center.fY);
1129    canvas->concat(m);
1130
1131    this->INHERITED::draw(canvas);
1132
1133    canvas->restoreToCount(count);
1134}
1135
1136void SampleWindow::showZoomer(SkCanvas* canvas) {
1137        int count = canvas->save();
1138        canvas->resetMatrix();
1139        // Ensure the mouse position is on screen.
1140        int width = SkScalarRound(this->width());
1141        int height = SkScalarRound(this->height());
1142        if (fMouseX >= width) fMouseX = width - 1;
1143        else if (fMouseX < 0) fMouseX = 0;
1144        if (fMouseY >= height) fMouseY = height - 1;
1145        else if (fMouseY < 0) fMouseY = 0;
1146
1147        SkBitmap bitmap = capture_bitmap(canvas);
1148        bitmap.lockPixels();
1149
1150        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1151        int zoomedWidth = (width >> 1) | 1;
1152        int zoomedHeight = (height >> 1) | 1;
1153        SkIRect src;
1154        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1155        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1156        SkRect dest;
1157        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1158        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1159        SkPaint paint;
1160        // Clear the background behind our zoomed in view
1161        paint.setColor(SK_ColorWHITE);
1162        canvas->drawRect(dest, paint);
1163        canvas->drawBitmapRect(bitmap, &src, dest);
1164        paint.setColor(SK_ColorBLACK);
1165        paint.setStyle(SkPaint::kStroke_Style);
1166        // Draw a border around the pixel in the middle
1167        SkRect originalPixel;
1168        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1169        SkMatrix matrix;
1170        SkRect scalarSrc;
1171        scalarSrc.set(src);
1172        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1173        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1174            SkRect pixel;
1175            matrix.mapRect(&pixel, originalPixel);
1176            // TODO Perhaps measure the values and make the outline white if it's "dark"
1177            if (color == SK_ColorBLACK) {
1178                paint.setColor(SK_ColorWHITE);
1179            }
1180            canvas->drawRect(pixel, paint);
1181        }
1182        paint.setColor(SK_ColorBLACK);
1183        // Draw a border around the destination rectangle
1184        canvas->drawRect(dest, paint);
1185        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1186        // Identify the pixel and its color on screen
1187        paint.setTypeface(fTypeface);
1188        paint.setAntiAlias(true);
1189        SkScalar lineHeight = paint.getFontMetrics(NULL);
1190        SkString string;
1191        string.appendf("(%i, %i)", fMouseX, fMouseY);
1192        SkScalar left = dest.fLeft + SkIntToScalar(3);
1193        SkScalar i = SK_Scalar1;
1194        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1195        // Alpha
1196        i += SK_Scalar1;
1197        string.reset();
1198        string.appendf("A: %X", SkColorGetA(color));
1199        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1200        // Red
1201        i += SK_Scalar1;
1202        string.reset();
1203        string.appendf("R: %X", SkColorGetR(color));
1204        paint.setColor(SK_ColorRED);
1205        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1206        // Green
1207        i += SK_Scalar1;
1208        string.reset();
1209        string.appendf("G: %X", SkColorGetG(color));
1210        paint.setColor(SK_ColorGREEN);
1211        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1212        // Blue
1213        i += SK_Scalar1;
1214        string.reset();
1215        string.appendf("B: %X", SkColorGetB(color));
1216        paint.setColor(SK_ColorBLUE);
1217        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1218        canvas->restoreToCount(count);
1219}
1220
1221void SampleWindow::onDraw(SkCanvas* canvas) {
1222}
1223
1224#include "SkColorPriv.h"
1225
1226#if 0 // UNUSED
1227static void reverseRedAndBlue(const SkBitmap& bm) {
1228    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1229    uint8_t* p = (uint8_t*)bm.getPixels();
1230    uint8_t* stop = p + bm.getSize();
1231    while (p < stop) {
1232        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1233        unsigned scale = SkAlpha255To256(p[3]);
1234        unsigned r = p[2];
1235        unsigned b = p[0];
1236        p[0] = SkAlphaMul(r, scale);
1237        p[1] = SkAlphaMul(p[1], scale);
1238        p[2] = SkAlphaMul(b, scale);
1239        p += 4;
1240    }
1241}
1242#endif
1243
1244void SampleWindow::saveToPdf()
1245{
1246    fSaveToPdf = true;
1247    this->inval(NULL);
1248}
1249
1250SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1251    if (fSaveToPdf) {
1252        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1253        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1254        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1255                canvas->getTotalMatrix());
1256        fPdfCanvas = new SkCanvas(pdfDevice);
1257        pdfDevice->unref();
1258        canvas = fPdfCanvas;
1259    } else if (kPicture_DeviceType == fDeviceType) {
1260        fPicture = new SkPicture;
1261        canvas = fPicture->beginRecording(9999, 9999);
1262    } else {
1263#if SK_SUPPORT_GPU
1264        if (kNullGPU_DeviceType != fDeviceType)
1265#endif
1266        {
1267            canvas = this->INHERITED::beforeChildren(canvas);
1268        }
1269    }
1270
1271    if (fUseClip) {
1272        canvas->drawColor(0xFFFF88FF);
1273        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1274    }
1275
1276    return canvas;
1277}
1278
1279static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1280                      const SkRegion& rgn) {
1281    SkCanvas    canvas(bm);
1282    SkRegion    inval(rgn);
1283
1284    inval.translate(r.fLeft, r.fTop);
1285    canvas.clipRegion(inval);
1286    canvas.drawColor(0xFFFF8080);
1287}
1288#include "SkData.h"
1289void SampleWindow::afterChildren(SkCanvas* orig) {
1290    if (fSaveToPdf) {
1291        fSaveToPdf = false;
1292        if (fShowZoomer) {
1293            showZoomer(fPdfCanvas);
1294        }
1295        SkString name;
1296        name.printf("%s.pdf", this->getTitle());
1297        SkPDFDocument doc;
1298        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1299        doc.appendPage(device);
1300#ifdef SK_BUILD_FOR_ANDROID
1301        name.prepend("/sdcard/");
1302#endif
1303
1304#ifdef SK_BUILD_FOR_IOS
1305        SkDynamicMemoryWStream mstream;
1306        doc.emitPDF(&mstream);
1307        fPDFData = mstream.copyToData();
1308#endif
1309        SkFILEWStream stream(name.c_str());
1310        if (stream.isValid()) {
1311            doc.emitPDF(&stream);
1312            const char* desc = "File saved from Skia SampleApp";
1313            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1314        }
1315
1316        delete fPdfCanvas;
1317        fPdfCanvas = NULL;
1318
1319        // We took over the draw calls in order to create the PDF, so we need
1320        // to redraw.
1321        this->inval(NULL);
1322        return;
1323    }
1324
1325    if (fRequestGrabImage) {
1326        fRequestGrabImage = false;
1327
1328        SkDevice* device = orig->getDevice();
1329        SkBitmap bmp;
1330        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1331            static int gSampleGrabCounter;
1332            SkString name;
1333            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1334            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1335                                       SkImageEncoder::kPNG_Type, 100);
1336        }
1337    }
1338
1339    if (kPicture_DeviceType == fDeviceType) {
1340        if (true) {
1341            SkPicture* pict = new SkPicture(*fPicture);
1342            fPicture->unref();
1343            this->installDrawFilter(orig);
1344            orig->drawPicture(*pict);
1345            pict->unref();
1346        } else if (true) {
1347            SkDynamicMemoryWStream ostream;
1348            fPicture->serialize(&ostream);
1349            fPicture->unref();
1350
1351            SkAutoDataUnref data(ostream.copyToData());
1352            SkMemoryStream istream(data->data(), data->size());
1353            SkPicture pict(&istream);
1354            orig->drawPicture(pict);
1355        } else {
1356            fPicture->draw(orig);
1357            fPicture->unref();
1358        }
1359        fPicture = NULL;
1360    }
1361
1362    // Do this after presentGL and other finishing, rather than in afterChild
1363    if (fMeasureFPS && fMeasureFPS_StartTime) {
1364        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1365    }
1366
1367    //    if ((fScrollTestX | fScrollTestY) != 0)
1368    if (false) {
1369        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1370        int dx = fScrollTestX * 7;
1371        int dy = fScrollTestY * 7;
1372        SkIRect r;
1373        SkRegion inval;
1374
1375        r.set(50, 50, 50+100, 50+100);
1376        bm.scrollRect(&r, dx, dy, &inval);
1377        paint_rgn(bm, r, inval);
1378    }
1379}
1380
1381void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1382    if (fScale) {
1383        SkScalar scale = SK_Scalar1 * 7 / 10;
1384        SkScalar cx = this->width() / 2;
1385        SkScalar cy = this->height() / 2;
1386        canvas->translate(cx, cy);
1387        canvas->scale(scale, scale);
1388        canvas->translate(-cx, -cy);
1389    }
1390    if (fRotate) {
1391        SkScalar cx = this->width() / 2;
1392        SkScalar cy = this->height() / 2;
1393        canvas->translate(cx, cy);
1394        canvas->rotate(SkIntToScalar(30));
1395        canvas->translate(-cx, -cy);
1396    }
1397    if (fPerspAnim) {
1398        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1399
1400        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1401        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1402        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1403        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1404            t = gAnimPeriod - t;
1405        }
1406        t = 2 * t - gAnimPeriod;
1407        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1408        SkMatrix m;
1409        m.reset();
1410        m.setPerspY(t);
1411        canvas->concat(m);
1412    }
1413
1414    this->installDrawFilter(canvas);
1415
1416    if (fMeasureFPS) {
1417        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1418            fMeasureFPS_StartTime = SkTime::GetMSecs();
1419        }
1420    } else {
1421        (void)SampleView::SetRepeatDraw(child, 1);
1422    }
1423    if (fPerspAnim) {
1424        this->inval(NULL);
1425    }
1426}
1427
1428void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1429    canvas->setDrawFilter(NULL);
1430}
1431
1432static SkBitmap::Config gConfigCycle[] = {
1433    SkBitmap::kNo_Config,           // none -> none
1434    SkBitmap::kNo_Config,           // a1 -> none
1435    SkBitmap::kNo_Config,           // a8 -> none
1436    SkBitmap::kNo_Config,           // index8 -> none
1437    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1438    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1439    SkBitmap::kRGB_565_Config       // 8888 -> 565
1440};
1441
1442static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1443    return gConfigCycle[c];
1444}
1445
1446void SampleWindow::changeZoomLevel(float delta) {
1447    fZoomLevel += SkFloatToScalar(delta);
1448    if (fZoomLevel > 0) {
1449        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1450        fZoomScale = fZoomLevel + SK_Scalar1;
1451    } else if (fZoomLevel < 0) {
1452        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1453        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1454    } else {
1455        fZoomScale = SK_Scalar1;
1456    }
1457    this->updateMatrix();
1458}
1459
1460void SampleWindow::updateMatrix(){
1461    SkMatrix m;
1462    m.reset();
1463    if (fZoomLevel) {
1464        SkPoint center;
1465        //m = this->getLocalMatrix();//.invert(&m);
1466        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1467        SkScalar cx = center.fX;
1468        SkScalar cy = center.fY;
1469
1470        m.setTranslate(-cx, -cy);
1471        m.postScale(fZoomScale, fZoomScale);
1472        m.postTranslate(cx, cy);
1473    }
1474
1475    if (fFlipAxis) {
1476        m.preTranslate(fZoomCenterX, fZoomCenterY);
1477        if (fFlipAxis & kFlipAxis_X) {
1478            m.preScale(-SK_Scalar1, SK_Scalar1);
1479        }
1480        if (fFlipAxis & kFlipAxis_Y) {
1481            m.preScale(SK_Scalar1, -SK_Scalar1);
1482        }
1483        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1484        //canvas->concat(m);
1485    }
1486    // Apply any gesture matrix
1487    m.preConcat(fGesture.localM());
1488    m.preConcat(fGesture.globalM());
1489
1490    this->setLocalMatrix(m);
1491
1492    this->updateTitle();
1493    this->inval(NULL);
1494}
1495bool SampleWindow::previousSample() {
1496    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1497    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1498                                     fTransitionPrev));
1499    return true;
1500}
1501
1502bool SampleWindow::nextSample() {
1503    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1504    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1505                                     fTransitionNext));
1506    return true;
1507}
1508
1509bool SampleWindow::goToSample(int i) {
1510    fCurrIndex = (i) % fSamples.count();
1511    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1512    return true;
1513}
1514
1515SkString SampleWindow::getSampleTitle(int i) {
1516    SkView* view = (*fSamples[i])();
1517    SkString title;
1518    SampleCode::RequestTitle(view, &title);
1519    view->unref();
1520    return title;
1521}
1522
1523int SampleWindow::sampleCount() {
1524    return fSamples.count();
1525}
1526
1527void SampleWindow::showOverview() {
1528    this->loadView(create_transition(curr_view(this),
1529                                     create_overview(fSamples.count(), fSamples.begin()),
1530                                     4));
1531}
1532
1533void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1534    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1535                                              fFilterState, fHintingState))->unref();
1536}
1537
1538void SampleWindow::postAnimatingEvent() {
1539    if (fAnimating) {
1540        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1541    }
1542}
1543
1544bool SampleWindow::onEvent(const SkEvent& evt) {
1545    if (evt.isType(gUpdateWindowTitleEvtName)) {
1546        this->updateTitle();
1547        return true;
1548    }
1549    if (evt.isType(ANIMATING_EVENTTYPE)) {
1550        if (fAnimating) {
1551            this->nextSample();
1552            this->postAnimatingEvent();
1553        }
1554        return true;
1555    }
1556    if (evt.isType("replace-transition-view")) {
1557        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1558        return true;
1559    }
1560    if (evt.isType("set-curr-index")) {
1561        this->goToSample(evt.getFast32());
1562        return true;
1563    }
1564    if (isInvalEvent(evt)) {
1565        this->inval(NULL);
1566        return true;
1567    }
1568    int selected = -1;
1569    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1570        this->setDeviceType((DeviceType)selected);
1571        return true;
1572    }
1573    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1574#ifdef PIPE_NET
1575        if (!fPipeState != SkOSMenu::kOnState)
1576            gServer.disconnectAll();
1577#endif
1578        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1579        this->updateTitle();
1580        this->inval(NULL);
1581        return true;
1582    }
1583    if (SkOSMenu::FindTriState(evt, "Tiling", &fTilingState)) {
1584        int nx = 1, ny = 1;
1585        switch (fTilingState) {
1586            case SkOSMenu::kOffState:   nx = 1; ny = 1; break;
1587            case SkOSMenu::kMixedState: nx = 1; ny = 16; break;
1588            case SkOSMenu::kOnState:    nx = 4; ny = 4; break;
1589        }
1590        fTileCount.set(nx, ny);
1591        this->inval(NULL);
1592        return true;
1593    }
1594    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1595        this->toggleSlideshow();
1596        return true;
1597    }
1598    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1599        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1600        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1601        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1602        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1603        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1604        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1605        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1606        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1607        this->inval(NULL);
1608        this->updateTitle();
1609        return true;
1610    }
1611    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1612        fFlipAxis ^= kFlipAxis_X;
1613        this->updateMatrix();
1614        return true;
1615    }
1616    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1617        fFlipAxis ^= kFlipAxis_Y;
1618        this->updateMatrix();
1619        return true;
1620    }
1621    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1622        this->saveToPdf();
1623        return true;
1624    }
1625    return this->INHERITED::onEvent(evt);
1626}
1627
1628bool SampleWindow::onQuery(SkEvent* query) {
1629    if (query->isType("get-slide-count")) {
1630        query->setFast32(fSamples.count());
1631        return true;
1632    }
1633    if (query->isType("get-slide-title")) {
1634        SkView* view = (*fSamples[query->getFast32()])();
1635        SkEvent evt(gTitleEvtName);
1636        if (view->doQuery(&evt)) {
1637            query->setString("title", evt.findString(gTitleEvtName));
1638        }
1639        SkSafeUnref(view);
1640        return true;
1641    }
1642    if (query->isType("use-fast-text")) {
1643        SkEvent evt(gFastTextEvtName);
1644        return curr_view(this)->doQuery(&evt);
1645    }
1646    if (query->isType("ignore-window-bitmap")) {
1647        query->setFast32(this->getGrContext() != NULL);
1648        return true;
1649    }
1650    return this->INHERITED::onQuery(query);
1651}
1652
1653#if 0 // UNUSED
1654static void cleanup_for_filename(SkString* name) {
1655    char* str = name->writable_str();
1656    for (size_t i = 0; i < name->size(); i++) {
1657        switch (str[i]) {
1658            case ':': str[i] = '-'; break;
1659            case '/': str[i] = '-'; break;
1660            case ' ': str[i] = '_'; break;
1661            default: break;
1662        }
1663    }
1664}
1665#endif
1666
1667//extern bool gIgnoreFastBlurRect;
1668
1669bool SampleWindow::onHandleChar(SkUnichar uni) {
1670    {
1671        SkView* view = curr_view(this);
1672        if (view) {
1673            SkEvent evt(gCharEvtName);
1674            evt.setFast32(uni);
1675            if (view->doQuery(&evt)) {
1676                return true;
1677            }
1678        }
1679    }
1680
1681    int dx = 0xFF;
1682    int dy = 0xFF;
1683
1684    switch (uni) {
1685        case '5': dx =  0; dy =  0; break;
1686        case '8': dx =  0; dy = -1; break;
1687        case '6': dx =  1; dy =  0; break;
1688        case '2': dx =  0; dy =  1; break;
1689        case '4': dx = -1; dy =  0; break;
1690        case '7': dx = -1; dy = -1; break;
1691        case '9': dx =  1; dy = -1; break;
1692        case '3': dx =  1; dy =  1; break;
1693        case '1': dx = -1; dy =  1; break;
1694
1695        default:
1696            break;
1697    }
1698
1699    if (0xFF != dx && 0xFF != dy) {
1700        if ((dx | dy) == 0) {
1701            fScrollTestX = fScrollTestY = 0;
1702        } else {
1703            fScrollTestX += dx;
1704            fScrollTestY += dy;
1705        }
1706        this->inval(NULL);
1707        return true;
1708    }
1709
1710    switch (uni) {
1711        case 'b':
1712            {
1713            postEventToSink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1714            this->updateTitle();
1715            this->inval(NULL);
1716            break;
1717            }
1718        case 'B':
1719//            gIgnoreFastBlurRect = !gIgnoreFastBlurRect;
1720            this->inval(NULL);
1721            break;
1722
1723        case 'f':
1724            // only
1725            toggleFPS();
1726            break;
1727        case 'g':
1728            fRequestGrabImage = true;
1729            this->inval(NULL);
1730            break;
1731        case 'G':
1732            gShowGMBounds = !gShowGMBounds;
1733            postEventToSink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1734                            curr_view(this));
1735            this->inval(NULL);
1736            break;
1737        case 'i':
1738            this->zoomIn();
1739            break;
1740        case 'o':
1741            this->zoomOut();
1742            break;
1743        case 'r':
1744            fRotate = !fRotate;
1745            this->inval(NULL);
1746            this->updateTitle();
1747            return true;
1748        case 'k':
1749            fPerspAnim = !fPerspAnim;
1750            this->inval(NULL);
1751            this->updateTitle();
1752            return true;
1753#if SK_SUPPORT_GPU
1754        case '\\':
1755            this->setDeviceType(kNullGPU_DeviceType);
1756            this->inval(NULL);
1757            this->updateTitle();
1758            return true;
1759        case 'p':
1760            {
1761                GrContext* grContext = this->getGrContext();
1762                if (grContext) {
1763                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1764                    grContext->freeGpuResources();
1765                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1766                             cacheBytes);
1767                }
1768            }
1769            return true;
1770#endif
1771        case 's':
1772            fScale = !fScale;
1773            this->inval(NULL);
1774            this->updateTitle();
1775            return true;
1776        default:
1777            break;
1778    }
1779
1780    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1781        this->onUpdateMenu(fAppMenu);
1782        this->onUpdateMenu(fSlideMenu);
1783        return true;
1784    }
1785    return this->INHERITED::onHandleChar(uni);
1786}
1787
1788void SampleWindow::setDeviceType(DeviceType type) {
1789    if (type == fDeviceType)
1790        return;
1791
1792    fDevManager->tearDownBackend(this);
1793
1794    fDeviceType = type;
1795
1796    fDevManager->setUpBackend(this, fMSAASampleCount);
1797
1798    this->updateTitle();
1799    this->inval(NULL);
1800}
1801
1802void SampleWindow::toggleSlideshow() {
1803    fAnimating = !fAnimating;
1804    this->postAnimatingEvent();
1805    this->updateTitle();
1806}
1807
1808void SampleWindow::toggleRendering() {
1809    this->setDeviceType(cycle_devicetype(fDeviceType));
1810    this->updateTitle();
1811    this->inval(NULL);
1812}
1813
1814void SampleWindow::toggleFPS() {
1815    fMeasureFPS = !fMeasureFPS;
1816    this->updateTitle();
1817    this->inval(NULL);
1818}
1819
1820#include "SkDumpCanvas.h"
1821
1822bool SampleWindow::onHandleKey(SkKey key) {
1823    {
1824        SkView* view = curr_view(this);
1825        if (view) {
1826            SkEvent evt(gKeyEvtName);
1827            evt.setFast32(key);
1828            if (view->doQuery(&evt)) {
1829                return true;
1830            }
1831        }
1832    }
1833    switch (key) {
1834        case kRight_SkKey:
1835            if (this->nextSample()) {
1836                return true;
1837            }
1838            break;
1839        case kLeft_SkKey:
1840            if (this->previousSample()) {
1841                return true;
1842            }
1843            return true;
1844        case kUp_SkKey:
1845            if (USE_ARROWS_FOR_ZOOM) {
1846                this->changeZoomLevel(1.f);
1847            } else {
1848                fNClip = !fNClip;
1849                this->inval(NULL);
1850                this->updateTitle();
1851            }
1852            return true;
1853        case kDown_SkKey:
1854            if (USE_ARROWS_FOR_ZOOM) {
1855                this->changeZoomLevel(-1.f);
1856            } else {
1857                this->setConfig(cycle_configs(this->getBitmap().config()));
1858                this->updateTitle();
1859            }
1860            return true;
1861        case kOK_SkKey: {
1862            SkString title;
1863            if (curr_title(this, &title)) {
1864                writeTitleToPrefs(title.c_str());
1865            }
1866            return true;
1867        }
1868        case kBack_SkKey:
1869            this->showOverview();
1870            return true;
1871        default:
1872            break;
1873    }
1874    return this->INHERITED::onHandleKey(key);
1875}
1876
1877///////////////////////////////////////////////////////////////////////////////
1878
1879static const char gGestureClickType[] = "GestureClickType";
1880
1881bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1882        void* owner, unsigned modi) {
1883    if (Click::kMoved_State == state) {
1884        updatePointer(x, y);
1885    }
1886    int w = SkScalarRound(this->width());
1887    int h = SkScalarRound(this->height());
1888
1889    // check for the resize-box
1890    if (w - x < 16 && h - y < 16) {
1891        return false;   // let the OS handle the click
1892    }
1893    else if (fMagnify) {
1894        //it's only necessary to update the drawing if there's a click
1895        this->inval(NULL);
1896        return false; //prevent dragging while magnify is enabled
1897    } else {
1898        // capture control+option, and trigger debugger
1899        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1900            if (Click::kDown_State == state) {
1901                SkEvent evt("debug-hit-test");
1902                evt.setS32("debug-hit-test-x", x);
1903                evt.setS32("debug-hit-test-y", y);
1904                curr_view(this)->doEvent(evt);
1905            }
1906            return true;
1907        } else {
1908            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
1909        }
1910    }
1911}
1912
1913class GestureClick : public SkView::Click {
1914public:
1915    GestureClick(SkView* target) : SkView::Click(target) {
1916        this->setType(gGestureClickType);
1917    }
1918
1919    static bool IsGesture(Click* click) {
1920        return click->isType(gGestureClickType);
1921    }
1922};
1923
1924SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
1925                                                unsigned modi) {
1926    return new GestureClick(this);
1927}
1928
1929bool SampleWindow::onClick(Click* click) {
1930    if (GestureClick::IsGesture(click)) {
1931        float x = static_cast<float>(click->fICurr.fX);
1932        float y = static_cast<float>(click->fICurr.fY);
1933
1934        switch (click->fState) {
1935            case SkView::Click::kDown_State:
1936                fGesture.touchBegin(click->fOwner, x, y);
1937                break;
1938            case SkView::Click::kMoved_State:
1939                fGesture.touchMoved(click->fOwner, x, y);
1940                this->updateMatrix();
1941                break;
1942            case SkView::Click::kUp_State:
1943                fGesture.touchEnd(click->fOwner);
1944                this->updateMatrix();
1945                break;
1946        }
1947        return true;
1948    }
1949    return false;
1950}
1951
1952///////////////////////////////////////////////////////////////////////////////
1953
1954void SampleWindow::loadView(SkView* view) {
1955    SkView::F2BIter iter(this);
1956    SkView* prev = iter.next();
1957    if (prev) {
1958        prev->detachFromParent();
1959    }
1960
1961    view->setVisibleP(true);
1962    view->setClipToBounds(false);
1963    this->attachChildToFront(view)->unref();
1964    view->setSize(this->width(), this->height());
1965
1966    //repopulate the slide menu when a view is loaded
1967    fSlideMenu->reset();
1968
1969    (void)SampleView::SetUsePipe(view, fPipeState);
1970    if (SampleView::IsSampleView(view))
1971        ((SampleView*)view)->requestMenu(fSlideMenu);
1972    this->onUpdateMenu(fSlideMenu);
1973    this->updateTitle();
1974}
1975
1976static const char* gConfigNames[] = {
1977    "unknown config",
1978    "A1",
1979    "A8",
1980    "Index8",
1981    "565",
1982    "4444",
1983    "8888"
1984};
1985
1986static const char* configToString(SkBitmap::Config c) {
1987    return gConfigNames[c];
1988}
1989
1990static const char* gDeviceTypePrefix[] = {
1991    "raster: ",
1992    "picture: ",
1993#if SK_SUPPORT_GPU
1994    "opengl: ",
1995#if SK_ANGLE
1996    "angle: ",
1997#endif // SK_ANGLE
1998    "null-gl: "
1999#endif // SK_SUPPORT_GPU
2000};
2001SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2002                  array_size_mismatch);
2003
2004static const char* trystate_str(SkOSMenu::TriState state,
2005                                const char trueStr[], const char falseStr[]) {
2006    if (SkOSMenu::kOnState == state) {
2007        return trueStr;
2008    } else if (SkOSMenu::kOffState == state) {
2009        return falseStr;
2010    }
2011    return NULL;
2012}
2013
2014void SampleWindow::updateTitle() {
2015    SkView* view = curr_view(this);
2016
2017    SkString title;
2018    if (!curr_title(this, &title)) {
2019        title.set("<unknown>");
2020    }
2021
2022    title.prepend(gDeviceTypePrefix[fDeviceType]);
2023
2024    title.prepend(" ");
2025    title.prepend(configToString(this->getBitmap().config()));
2026
2027    if (fAnimating) {
2028        title.prepend("<A> ");
2029    }
2030    if (fScale) {
2031        title.prepend("<S> ");
2032    }
2033    if (fRotate) {
2034        title.prepend("<R> ");
2035    }
2036    if (fNClip) {
2037        title.prepend("<C> ");
2038    }
2039    if (fPerspAnim) {
2040        title.prepend("<K> ");
2041    }
2042
2043    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2044    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2045    title.prepend(trystate_str(fFilterState, "H ", "h "));
2046    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2047    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2048
2049    if (fZoomLevel) {
2050        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2051    }
2052
2053    if (fMeasureFPS) {
2054        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2055    }
2056    if (SampleView::IsSampleView(view)) {
2057        switch (fPipeState) {
2058            case SkOSMenu::kOnState:
2059                title.prepend("<Pipe> ");
2060                break;
2061            case SkOSMenu::kMixedState:
2062                title.prepend("<Tiled Pipe> ");
2063                break;
2064
2065            default:
2066                break;
2067        }
2068        title.prepend("! ");
2069    }
2070
2071#if SK_SUPPORT_GPU
2072    if (IsGpuDeviceType(fDeviceType) &&
2073        NULL != fDevManager &&
2074        fDevManager->getGrRenderTarget() &&
2075        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2076        title.appendf(" [MSAA: %d]",
2077                       fDevManager->getGrRenderTarget()->numSamples());
2078    }
2079#endif
2080
2081    this->setTitle(title.c_str());
2082}
2083
2084void SampleWindow::onSizeChange() {
2085    this->INHERITED::onSizeChange();
2086
2087    SkView::F2BIter iter(this);
2088    SkView* view = iter.next();
2089    view->setSize(this->width(), this->height());
2090
2091    // rebuild our clippath
2092    {
2093        const SkScalar W = this->width();
2094        const SkScalar H = this->height();
2095
2096        fClipPath.reset();
2097#if 0
2098        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2099            SkRect r;
2100            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2101            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2102                fClipPath.addRect(r);
2103        }
2104#else
2105        SkRect r;
2106        r.set(0, 0, W, H);
2107        fClipPath.addRect(r, SkPath::kCCW_Direction);
2108        r.set(W/4, H/4, W*3/4, H*3/4);
2109        fClipPath.addRect(r, SkPath::kCW_Direction);
2110#endif
2111    }
2112
2113    fZoomCenterX = SkScalarHalf(this->width());
2114    fZoomCenterY = SkScalarHalf(this->height());
2115
2116#ifdef SK_BUILD_FOR_ANDROID
2117    // FIXME: The first draw after a size change does not work on Android, so
2118    // we post an invalidate.
2119    this->postInvalDelay();
2120#endif
2121    this->updateTitle();    // to refresh our config
2122    fDevManager->windowSizeChanged(this);
2123}
2124
2125///////////////////////////////////////////////////////////////////////////////
2126
2127static const char is_sample_view_tag[] = "sample-is-sample-view";
2128static const char repeat_count_tag[] = "sample-set-repeat-count";
2129static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2130
2131bool SampleView::IsSampleView(SkView* view) {
2132    SkEvent evt(is_sample_view_tag);
2133    return view->doQuery(&evt);
2134}
2135
2136bool SampleView::SetRepeatDraw(SkView* view, int count) {
2137    SkEvent evt(repeat_count_tag);
2138    evt.setFast32(count);
2139    return view->doEvent(evt);
2140}
2141
2142bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2143    SkEvent evt;
2144    evt.setS32(set_use_pipe_tag, state);
2145    return view->doEvent(evt);
2146}
2147
2148bool SampleView::onEvent(const SkEvent& evt) {
2149    if (evt.isType(repeat_count_tag)) {
2150        fRepeatCount = evt.getFast32();
2151        return true;
2152    }
2153
2154    int32_t pipeHolder;
2155    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2156        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2157        return true;
2158    }
2159
2160    if (evt.isType("debug-hit-test")) {
2161        fDebugHitTest = true;
2162        evt.findS32("debug-hit-test-x", &fDebugHitTestLoc.fX);
2163        evt.findS32("debug-hit-test-y", &fDebugHitTestLoc.fY);
2164        this->inval(NULL);
2165        return true;
2166    }
2167
2168    return this->INHERITED::onEvent(evt);
2169}
2170
2171bool SampleView::onQuery(SkEvent* evt) {
2172    if (evt->isType(is_sample_view_tag)) {
2173        return true;
2174    }
2175    return this->INHERITED::onQuery(evt);
2176}
2177
2178
2179class SimplePC : public SkGPipeController {
2180public:
2181    SimplePC(SkCanvas* target);
2182    ~SimplePC();
2183
2184    virtual void* requestBlock(size_t minRequest, size_t* actual);
2185    virtual void notifyWritten(size_t bytes);
2186
2187private:
2188    SkGPipeReader   fReader;
2189    void*           fBlock;
2190    size_t          fBlockSize;
2191    size_t          fBytesWritten;
2192    int             fAtomsWritten;
2193    SkGPipeReader::Status   fStatus;
2194
2195    size_t        fTotalWritten;
2196};
2197
2198SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2199    fBlock = NULL;
2200    fBlockSize = fBytesWritten = 0;
2201    fStatus = SkGPipeReader::kDone_Status;
2202    fTotalWritten = 0;
2203    fAtomsWritten = 0;
2204}
2205
2206SimplePC::~SimplePC() {
2207//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2208    if (fTotalWritten) {
2209        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2210                 fAtomsWritten, fStatus);
2211#ifdef  PIPE_FILE
2212        //File is open in append mode
2213        FILE* f = fopen(FILE_PATH, "ab");
2214        SkASSERT(f != NULL);
2215        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2216        fclose(f);
2217#endif
2218#ifdef PIPE_NET
2219        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2220            gServer.acceptConnections();
2221            gServer.writePacket(fBlock, fTotalWritten);
2222        }
2223#endif
2224    }
2225    sk_free(fBlock);
2226}
2227
2228void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2229    sk_free(fBlock);
2230
2231    fBlockSize = minRequest * 4;
2232    fBlock = sk_malloc_throw(fBlockSize);
2233    fBytesWritten = 0;
2234    *actual = fBlockSize;
2235    return fBlock;
2236}
2237
2238void SimplePC::notifyWritten(size_t bytes) {
2239    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2240    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2241    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2242    fBytesWritten += bytes;
2243    fTotalWritten += bytes;
2244
2245    fAtomsWritten += 1;
2246}
2247
2248void SampleView::draw(SkCanvas* canvas) {
2249    if (SkOSMenu::kOffState == fPipeState) {
2250        this->INHERITED::draw(canvas);
2251    } else {
2252        SkGPipeWriter writer;
2253        SimplePC controller(canvas);
2254        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2255                               &canvas->getTotalMatrix());
2256        SkGPipeController* pc;
2257        if (SkOSMenu::kMixedState == fPipeState) {
2258            pc = &tc;
2259        } else {
2260            pc = &controller;
2261        }
2262        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2263
2264        canvas = writer.startRecording(pc, flags);
2265        //Must draw before controller goes out of scope and sends data
2266        this->INHERITED::draw(canvas);
2267        //explicitly end recording to ensure writer is flushed before the memory
2268        //is freed in the deconstructor of the controller
2269        writer.endRecording();
2270    }
2271}
2272
2273#include "SkBounder.h"
2274
2275class DebugHitTestBounder : public SkBounder {
2276public:
2277    DebugHitTestBounder(int x, int y) {
2278        fLoc.set(x, y);
2279    }
2280
2281    virtual bool onIRect(const SkIRect& bounds) SK_OVERRIDE {
2282        if (bounds.contains(fLoc.x(), fLoc.y())) {
2283            //
2284            // Set a break-point here to see what was being drawn under
2285            // the click point (just needed a line of code to stop the debugger)
2286            //
2287            bounds.centerX();
2288        }
2289        return true;
2290    }
2291
2292private:
2293    SkIPoint fLoc;
2294    typedef SkBounder INHERITED;
2295};
2296
2297void SampleView::onDraw(SkCanvas* canvas) {
2298    this->onDrawBackground(canvas);
2299
2300    DebugHitTestBounder bounder(fDebugHitTestLoc.x(), fDebugHitTestLoc.y());
2301    if (fDebugHitTest) {
2302        canvas->setBounder(&bounder);
2303    }
2304
2305    for (int i = 0; i < fRepeatCount; i++) {
2306        SkAutoCanvasRestore acr(canvas, true);
2307        this->onDrawContent(canvas);
2308    }
2309
2310    fDebugHitTest = false;
2311    canvas->setBounder(NULL);
2312}
2313
2314void SampleView::onDrawBackground(SkCanvas* canvas) {
2315    canvas->drawColor(fBGColor);
2316}
2317
2318///////////////////////////////////////////////////////////////////////////////
2319
2320template <typename T> void SkTBSort(T array[], int count) {
2321    for (int i = 1; i < count - 1; i++) {
2322        bool didSwap = false;
2323        for (int j = count - 1; j > i; --j) {
2324            if (array[j] < array[j-1]) {
2325                T tmp(array[j-1]);
2326                array[j-1] = array[j];
2327                array[j] = tmp;
2328                didSwap = true;
2329            }
2330        }
2331        if (!didSwap) {
2332            break;
2333        }
2334    }
2335
2336    for (int k = 0; k < count - 1; k++) {
2337        SkASSERT(!(array[k+1] < array[k]));
2338    }
2339}
2340
2341#include "SkRandom.h"
2342
2343static void rand_rect(SkIRect* rect, SkRandom& rand) {
2344    int bits = 8;
2345    int shift = 32 - bits;
2346    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2347              rand.nextU() >> shift, rand.nextU() >> shift);
2348    rect->sort();
2349}
2350
2351static void dumpRect(const SkIRect& r) {
2352    SkDebugf(" { %d, %d, %d, %d },\n",
2353             r.fLeft, r.fTop,
2354             r.fRight, r.fBottom);
2355}
2356
2357static void test_rects(const SkIRect rect[], int count) {
2358    SkRegion rgn0, rgn1;
2359
2360    for (int i = 0; i < count; i++) {
2361        rgn0.op(rect[i], SkRegion::kUnion_Op);
2362     //   dumpRect(rect[i]);
2363    }
2364    rgn1.setRects(rect, count);
2365
2366    if (rgn0 != rgn1) {
2367        SkDebugf("\n");
2368        for (int i = 0; i < count; i++) {
2369            dumpRect(rect[i]);
2370        }
2371        SkDebugf("\n");
2372    }
2373}
2374
2375static void test() {
2376    size_t i;
2377
2378    const SkIRect r0[] = {
2379        { 0, 0, 1, 1 },
2380        { 2, 2, 3, 3 },
2381    };
2382    const SkIRect r1[] = {
2383        { 0, 0, 1, 3 },
2384        { 1, 1, 2, 2 },
2385        { 2, 0, 3, 3 },
2386    };
2387    const SkIRect r2[] = {
2388        { 0, 0, 1, 2 },
2389        { 2, 1, 3, 3 },
2390        { 4, 0, 5, 1 },
2391        { 6, 0, 7, 4 },
2392    };
2393
2394    static const struct {
2395        const SkIRect* fRects;
2396        int            fCount;
2397    } gRecs[] = {
2398        { r0, SK_ARRAY_COUNT(r0) },
2399        { r1, SK_ARRAY_COUNT(r1) },
2400        { r2, SK_ARRAY_COUNT(r2) },
2401    };
2402
2403    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2404        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2405    }
2406
2407    SkRandom rand;
2408    for (i = 0; i < 10000; i++) {
2409        SkRegion rgn0, rgn1;
2410
2411        const int N = 8;
2412        SkIRect rect[N];
2413        for (int j = 0; j < N; j++) {
2414            rand_rect(&rect[j], rand);
2415        }
2416        test_rects(rect, N);
2417    }
2418}
2419
2420// FIXME: this should be in a header
2421SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2422SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2423    if (false) { // avoid bit rot, suppress warning
2424        test();
2425    }
2426    return new SampleWindow(hwnd, argc, argv, NULL);
2427}
2428
2429// FIXME: this should be in a header
2430void get_preferred_size(int* x, int* y, int* width, int* height);
2431void get_preferred_size(int* x, int* y, int* width, int* height) {
2432    *x = 10;
2433    *y = 50;
2434    *width = 640;
2435    *height = 480;
2436}
2437
2438#ifdef SK_BUILD_FOR_IOS
2439void save_args(int argc, char *argv[]) {
2440}
2441#endif
2442
2443// FIXME: this should be in a header
2444void application_init();
2445void application_init() {
2446//    setenv("ANDROID_ROOT", "../../../data", 0);
2447#ifdef SK_BUILD_FOR_MAC
2448    setenv("ANDROID_ROOT", "/android/device/data", 0);
2449#endif
2450    SkGraphics::Init();
2451    SkEvent::Init();
2452}
2453
2454// FIXME: this should be in a header
2455void application_term();
2456void application_term() {
2457    SkEvent::Term();
2458    SkGraphics::Term();
2459}
2460