SampleApp.cpp revision e2dd973e4b0dac58610b73d577e91899c2b1c4ea 
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
41extern SampleView* CreateSamplePictFileView(const char filename[]);
42
43class PictFileFactory : public SkViewFactory {
44    SkString fFilename;
45public:
46    PictFileFactory(const SkString& filename) : fFilename(filename) {}
47    virtual SkView* operator() () const SK_OVERRIDE {
48        return CreateSamplePictFileView(fFilename.c_str());
49    }
50};
51
52#define PIPE_FILEx
53#ifdef  PIPE_FILE
54#define FILE_PATH "/path/to/drawing.data"
55#endif
56
57#define PIPE_NETx
58#ifdef  PIPE_NET
59#include "SkSockets.h"
60SkTCPServer gServer;
61#endif
62
63#define DEBUGGERx
64#ifdef  DEBUGGER
65extern SkView* create_debugger(const char* data, size_t size);
66extern bool is_debugger(SkView* view);
67SkTDArray<char> gTempDataStore;
68#endif
69
70
71#define USE_ARROWS_FOR_ZOOM true
72
73#if SK_ANGLE
74//#define DEFAULT_TO_ANGLE 1
75#else
76//#define DEFAULT_TO_GPU 1
77#endif
78
79extern SkView* create_overview(int, const SkViewFactory*[]);
80extern bool is_overview(SkView* view);
81extern SkView* create_transition(SkView*, SkView*, int);
82extern bool is_transition(SkView* view);
83
84
85#define ANIMATING_EVENTTYPE "nextSample"
86#define ANIMATING_DELAY     750
87
88#ifdef SK_DEBUG
89    #define FPS_REPEAT_MULTIPLIER   1
90#else
91    #define FPS_REPEAT_MULTIPLIER   10
92#endif
93#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
94
95static SampleWindow* gSampleWindow;
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_Shaders_GrEngine,
232                                        (GrPlatform3DContext) fCurIntf);
233
234        if (NULL == fCurContext || NULL == fCurIntf) {
235            // We need some context and interface to see results
236            SkSafeUnref(fCurContext);
237            SkSafeUnref(fCurIntf);
238            SkDebugf("Failed to setup 3D");
239
240            win->detach();
241        }
242#endif // SK_SUPPORT_GPU
243        // call windowSizeChanged to create the render target
244        this->windowSizeChanged(win);
245    }
246
247    virtual void tearDownBackend(SampleWindow *win) {
248#if SK_SUPPORT_GPU
249        SkSafeUnref(fCurContext);
250        fCurContext = NULL;
251
252        SkSafeUnref(fCurIntf);
253        fCurIntf = NULL;
254
255        SkSafeUnref(fCurRenderTarget);
256        fCurRenderTarget = NULL;
257#endif
258        win->detach();
259        fBackend = kNone_BackEndType;
260    }
261
262    virtual bool prepareCanvas(SampleWindow::DeviceType dType,
263                               SkCanvas* canvas,
264                               SampleWindow* win) {
265        switch (dType) {
266            case kRaster_DeviceType:
267                // fallthrough
268            case kPicture_DeviceType:
269                // fallthrough
270#if SK_ANGLE
271            case kANGLE_DeviceType:
272#endif
273                break;
274#if SK_SUPPORT_GPU
275            case kGPU_DeviceType:
276            case kNullGPU_DeviceType:
277                if (fCurContext) {
278                    canvas->setDevice(new SkGpuDevice(fCurContext,
279                                                    fCurRenderTarget))->unref();
280                } else {
281                    return false;
282                }
283                break;
284#endif
285            default:
286                SkASSERT(false);
287                return false;
288        }
289        return true;
290    }
291
292    virtual void publishCanvas(SampleWindow::DeviceType dType,
293                               SkCanvas* canvas,
294                               SampleWindow* win) {
295#if SK_SUPPORT_GPU
296        if (fCurContext) {
297            // in case we have queued drawing calls
298            fCurContext->flush();
299
300            if (kGPU_DeviceType != dType && kNullGPU_DeviceType != dType) {
301                // need to send the raster bits to the (gpu) window
302                fCurContext->setRenderTarget(fCurRenderTarget);
303                const SkBitmap& bm = win->getBitmap();
304                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
305                                             kSkia8888_PM_GrPixelConfig,
306                                             bm.getPixels(),
307                                             bm.rowBytes());
308            }
309        }
310#endif
311
312        win->present();
313    }
314
315    virtual void windowSizeChanged(SampleWindow* win) {
316#if SK_SUPPORT_GPU
317        if (fCurContext) {
318            win->attach(fBackend, fMSAASampleCount);
319
320            GrPlatformRenderTargetDesc desc;
321            desc.fWidth = SkScalarRound(win->width());
322            desc.fHeight = SkScalarRound(win->height());
323            desc.fConfig = kSkia8888_PM_GrPixelConfig;
324            GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
325            GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
326            GrGLint buffer;
327            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
328            desc.fRenderTargetHandle = buffer;
329
330            SkSafeUnref(fCurRenderTarget);
331            fCurRenderTarget = fCurContext->createPlatformRenderTarget(desc);
332        }
333#endif
334    }
335
336    virtual GrContext* getGrContext() {
337#if SK_SUPPORT_GPU
338        return fCurContext;
339#else
340        return NULL;
341#endif
342    }
343
344    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
345#if SK_SUPPORT_GPU
346        return fCurRenderTarget;
347#else
348        return NULL;
349#endif
350    }
351
352private:
353
354#if SK_SUPPORT_GPU
355    GrContext*              fCurContext;
356    const GrGLInterface*    fCurIntf;
357    GrRenderTarget*         fCurRenderTarget;
358    int fMSAASampleCount;
359#endif
360
361    SkOSWindow::SkBackEndTypes fBackend;
362
363    typedef SampleWindow::DeviceManager INHERITED;
364};
365
366///////////////
367static const char view_inval_msg[] = "view-inval-msg";
368
369void SampleWindow::postInvalDelay() {
370    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
371}
372
373static bool isInvalEvent(const SkEvent& evt) {
374    return evt.isType(view_inval_msg);
375}
376//////////////////
377
378SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
379    : fCreateFunc(func) {
380}
381
382SkView* SkFuncViewFactory::operator() () const {
383    return (*fCreateFunc)();
384}
385
386#include "GMSampleView.h"
387
388SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
389    : fFunc(func) {
390}
391
392SkView* SkGMSampleViewFactory::operator() () const {
393    return new GMSampleView(fFunc(NULL));
394}
395
396SkViewRegister* SkViewRegister::gHead;
397SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
398    fFact->ref();
399    fChain = gHead;
400    gHead = this;
401}
402
403SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
404    fFact = new SkFuncViewFactory(func);
405    fChain = gHead;
406    gHead = this;
407}
408
409SkViewRegister::SkViewRegister(GMFactoryFunc func) {
410    fFact = new SkGMSampleViewFactory(func);
411    fChain = gHead;
412    gHead = this;
413}
414
415class AutoUnrefArray {
416public:
417    AutoUnrefArray() {}
418    ~AutoUnrefArray() {
419        int count = fObjs.count();
420        for (int i = 0; i < count; ++i) {
421            fObjs[i]->unref();
422        }
423    }
424    SkRefCnt*& push_back() { return *fObjs.append(); }
425
426private:
427    SkTDArray<SkRefCnt*> fObjs;
428};
429
430// registers GMs as Samples
431// This can't be performed during static initialization because it could be
432// run before GMRegistry has been fully built.
433static void SkGMRegistyToSampleRegistry() {
434    static bool gOnce;
435    static AutoUnrefArray fRegisters;
436
437    if (!gOnce) {
438        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
439        while (gmreg) {
440            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
441            gmreg = gmreg->next();
442        }
443        gOnce = true;
444    }
445}
446
447#if 0
448#include <CoreFoundation/CoreFoundation.h>
449#include <CoreFoundation/CFURLAccess.h>
450
451static void testpdf() {
452    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
453                                                 kCFStringEncodingUTF8);
454    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
455                                              kCFURLPOSIXPathStyle,
456                                              false);
457    CFRelease(path);
458    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
459    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
460    CFRelease(url);
461
462    CGContextBeginPage(cg, &box);
463    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
464    CGContextFillEllipseInRect(cg, r);
465    CGContextEndPage(cg);
466    CGContextRelease(cg);
467
468    if (false) {
469        SkBitmap bm;
470        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
471        bm.allocPixels();
472        bm.eraseColor(0);
473
474        SkCanvas canvas(bm);
475
476    }
477}
478#endif
479
480//////////////////////////////////////////////////////////////////////////////
481
482enum FlipAxisEnum {
483    kFlipAxis_X = (1 << 0),
484    kFlipAxis_Y = (1 << 1)
485};
486
487#include "SkDrawFilter.h"
488
489class FlagsDrawFilter : public SkDrawFilter {
490public:
491    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
492                    SkOSMenu::TriState hinting) :
493        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
494
495    virtual void filter(SkPaint* paint, Type t) {
496        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
497            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
498        }
499        if (SkOSMenu::kMixedState != fAAState) {
500            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
501        }
502        if (SkOSMenu::kMixedState != fFilterState) {
503            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
504        }
505        if (SkOSMenu::kMixedState != fHintingState) {
506            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
507                              SkPaint::kNormal_Hinting :
508                              SkPaint::kSlight_Hinting);
509        }
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    fMeasureFPS = false;
797    fLCDState = SkOSMenu::kMixedState;
798    fAAState = SkOSMenu::kMixedState;
799    fFilterState = SkOSMenu::kMixedState;
800    fHintingState = SkOSMenu::kMixedState;
801    fFlipAxis = 0;
802    fScrollTestX = fScrollTestY = 0;
803
804    fMouseX = fMouseY = 0;
805    fFatBitsScale = 8;
806    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
807    fShowZoomer = false;
808
809    fZoomLevel = 0;
810    fZoomScale = SK_Scalar1;
811
812    fMagnify = false;
813    fDebugger = false;
814
815    fSaveToPdf = false;
816    fPdfCanvas = NULL;
817
818    fTransitionNext = 6;
819    fTransitionPrev = 2;
820
821    int sinkID = this->getSinkID();
822    fAppMenu = new SkOSMenu;
823    fAppMenu->setTitle("Global Settings");
824    int itemID;
825
826    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
827                                "Raster", "Picture", "OpenGL",
828#if SK_ANGLE
829                                "ANGLE",
830#endif
831                                NULL);
832    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
833    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
834    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
835    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
836    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
837    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
838    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
839    itemID = fAppMenu->appendTriState("Hinting", "Hinting", sinkID, fHintingState);
840    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
841
842    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
843                                                  fPipeState);
844    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
845
846    itemID = fAppMenu->appendTriState("Tiling", "Tiling", sinkID, fTilingState);
847    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
848
849#ifdef DEBUGGER
850    itemID = fAppMenu->appendSwitch("Debugger", "Debugger", sinkID, fDebugger);
851    fAppMenu->assignKeyEquivalentToItem(itemID, 'q');
852#endif
853    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
854    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
855    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
856    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
857    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
858    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
859    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
860    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
861    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
862    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
863    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
864    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
865    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
866                                fTransitionNext, "Up", "Up and Right", "Right",
867                                "Down and Right", "Down", "Down and Left",
868                                "Left", "Up and Left", NULL);
869    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
870    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
871                                fTransitionPrev, "Up", "Up and Right", "Right",
872                                "Down and Right", "Down", "Down and Left",
873                                "Left", "Up and Left", NULL);
874    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
875    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
876    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
877
878    this->addMenu(fAppMenu);
879    fSlideMenu = new SkOSMenu;
880    this->addMenu(fSlideMenu);
881
882//    this->setConfig(SkBitmap::kRGB_565_Config);
883    this->setConfig(SkBitmap::kARGB_8888_Config);
884    this->setVisibleP(true);
885    this->setClipToBounds(false);
886
887    skiagm::GM::SetResourcePath(resourcePath);
888
889    this->loadView((*fSamples[fCurrIndex])());
890
891    fPDFData = NULL;
892
893    if (NULL == devManager) {
894        fDevManager = new DefaultDeviceManager();
895    } else {
896        devManager->ref();
897        fDevManager = devManager;
898    }
899    fDevManager->setUpBackend(this, fMSAASampleCount);
900
901    // If another constructor set our dimensions, ensure that our
902    // onSizeChange gets called.
903    if (this->height() && this->width()) {
904        this->onSizeChange();
905    }
906
907    // can't call this synchronously, since it may require a subclass to
908    // to implement, or the caller may need us to have returned from the
909    // constructor first. Hence we post an event to ourselves.
910//    this->updateTitle();
911    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
912}
913
914SampleWindow::~SampleWindow() {
915    delete fPicture;
916    delete fPdfCanvas;
917    fTypeface->unref();
918
919    SkSafeUnref(fDevManager);
920}
921
922static void make_filepath(SkString* path, const char* dir, const SkString& name) {
923    size_t len = strlen(dir);
924    path->set(dir);
925    if (len > 0 && dir[len - 1] != '/') {
926        path->append("/");
927    }
928    path->append(name);
929}
930
931void SampleWindow::registerPictFileSample(char** argv, int argc) {
932    const char* pict = NULL;
933
934    for (int i = 0; i < argc; ++i) {
935        if (!strcmp(argv[i], "--picture")) {
936            i += 1;
937            if (i < argc) {
938                pict = argv[i];
939                break;
940            }
941        }
942    }
943    if (pict) {
944        SkString path(pict);
945        *fSamples.append() = new PictFileFactory(path);
946    }
947}
948
949void SampleWindow::registerPictFileSamples(char** argv, int argc) {
950    const char* pictDir = NULL;
951
952    for (int i = 0; i < argc; ++i) {
953        if (!strcmp(argv[i], "--pictureDir")) {
954            i += 1;
955            if (i < argc) {
956                pictDir = argv[i];
957                break;
958            }
959        }
960    }
961    if (pictDir) {
962        SkOSFile::Iter iter(pictDir, "skp");
963        SkString filename;
964        while (iter.next(&filename)) {
965            SkString path;
966            make_filepath(&path, pictDir, filename);
967            *fSamples.append() = new PictFileFactory(path);
968        }
969    }
970}
971
972int SampleWindow::findByTitle(const char title[]) {
973    int i, count = fSamples.count();
974    for (i = 0; i < count; i++) {
975        if (getSampleTitle(i).equals(title)) {
976            return i;
977        }
978    }
979    return -1;
980}
981
982void SampleWindow::listTitles() {
983    int count = fSamples.count();
984    SkDebugf("All Slides:\n");
985    for (int i = 0; i < count; i++) {
986        SkDebugf("    %s\n", getSampleTitle(i).c_str());
987    }
988}
989
990static SkBitmap capture_bitmap(SkCanvas* canvas) {
991    SkBitmap bm;
992    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
993    src.copyTo(&bm, src.config());
994    return bm;
995}
996
997static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
998                        SkBitmap* diff) {
999    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1000
1001    SkAutoLockPixels alp0(src);
1002    SkAutoLockPixels alp1(orig);
1003    for (int y = 0; y < src.height(); y++) {
1004        const void* srcP = src.getAddr(0, y);
1005        const void* origP = orig.getAddr(0, y);
1006        size_t bytes = src.width() * src.bytesPerPixel();
1007        if (memcmp(srcP, origP, bytes)) {
1008            SkDebugf("---------- difference on line %d\n", y);
1009            return true;
1010        }
1011    }
1012    return false;
1013}
1014
1015static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1016{
1017    SkColor desiredColor = paint.getColor();
1018    paint.setColor(SK_ColorWHITE);
1019    const char* c_str = string.c_str();
1020    size_t size = string.size();
1021    SkRect bounds;
1022    paint.measureText(c_str, size, &bounds);
1023    bounds.offset(left, top);
1024    SkScalar inset = SkIntToScalar(-2);
1025    bounds.inset(inset, inset);
1026    canvas->drawRect(bounds, paint);
1027    if (desiredColor != SK_ColorBLACK) {
1028        paint.setColor(SK_ColorBLACK);
1029        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1030    }
1031    paint.setColor(desiredColor);
1032    canvas->drawText(c_str, size, left, top, paint);
1033}
1034
1035#define XCLIP_N  8
1036#define YCLIP_N  8
1037
1038void SampleWindow::draw(SkCanvas* canvas) {
1039    if (!fDevManager->prepareCanvas(fDeviceType, canvas, this)) {
1040        return;
1041    }
1042    // update the animation time
1043    if (!gAnimTimePrev && !gAnimTime) {
1044        // first time make delta be 0
1045        gAnimTime = SkTime::GetMSecs();
1046        gAnimTimePrev = gAnimTime;
1047    } else {
1048        gAnimTimePrev = gAnimTime;
1049        gAnimTime = SkTime::GetMSecs();
1050    }
1051
1052    const SkMatrix& localM = fGesture.localM();
1053    if (localM.getType() & SkMatrix::kScale_Mask) {
1054        canvas->setExternalMatrix(&localM);
1055    }
1056    if (fGesture.isActive()) {
1057        this->updateMatrix();
1058    }
1059
1060    if (fNClip) {
1061        this->INHERITED::draw(canvas);
1062        SkBitmap orig = capture_bitmap(canvas);
1063
1064        const SkScalar w = this->width();
1065        const SkScalar h = this->height();
1066        const SkScalar cw = w / XCLIP_N;
1067        const SkScalar ch = h / YCLIP_N;
1068        for (int y = 0; y < YCLIP_N; y++) {
1069            SkRect r;
1070            r.fTop = y * ch;
1071            r.fBottom = (y + 1) * ch;
1072            if (y == YCLIP_N - 1) {
1073                r.fBottom = h;
1074            }
1075            for (int x = 0; x < XCLIP_N; x++) {
1076                SkAutoCanvasRestore acr(canvas, true);
1077                r.fLeft = x * cw;
1078                r.fRight = (x + 1) * cw;
1079                if (x == XCLIP_N - 1) {
1080                    r.fRight = w;
1081                }
1082                canvas->clipRect(r);
1083                this->INHERITED::draw(canvas);
1084            }
1085        }
1086
1087        SkBitmap diff;
1088        if (bitmap_diff(canvas, orig, &diff)) {
1089        }
1090    } else {
1091        this->INHERITED::draw(canvas);
1092    }
1093    if (fShowZoomer && !fSaveToPdf) {
1094        showZoomer(canvas);
1095    }
1096    if (fMagnify && !fSaveToPdf) {
1097        magnify(canvas);
1098    }
1099
1100    // do this last
1101    fDevManager->publishCanvas(fDeviceType, canvas, this);
1102}
1103
1104static float clipW = 200;
1105static float clipH = 200;
1106void SampleWindow::magnify(SkCanvas* canvas) {
1107    SkRect r;
1108    int count = canvas->save();
1109
1110    SkMatrix m = canvas->getTotalMatrix();
1111    if (!m.invert(&m)) {
1112        return;
1113    }
1114    SkPoint offset, center;
1115    SkScalar mouseX = fMouseX * SK_Scalar1;
1116    SkScalar mouseY = fMouseY * SK_Scalar1;
1117    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1118    m.mapXY(mouseX, mouseY, &center);
1119
1120    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1121    r.offset(offset.fX, offset.fY);
1122
1123    SkPaint paint;
1124    paint.setColor(0xFF66AAEE);
1125    paint.setStyle(SkPaint::kStroke_Style);
1126    paint.setStrokeWidth(10.f * m.getScaleX());
1127    //lense offset
1128    //canvas->translate(0, -250);
1129    canvas->drawRect(r, paint);
1130    canvas->clipRect(r);
1131
1132    m = canvas->getTotalMatrix();
1133    m.setTranslate(-center.fX, -center.fY);
1134    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1135    m.postTranslate(center.fX, center.fY);
1136    canvas->concat(m);
1137
1138    this->INHERITED::draw(canvas);
1139
1140    canvas->restoreToCount(count);
1141}
1142
1143void SampleWindow::showZoomer(SkCanvas* canvas) {
1144        int count = canvas->save();
1145        canvas->resetMatrix();
1146        // Ensure the mouse position is on screen.
1147        int width = SkScalarRound(this->width());
1148        int height = SkScalarRound(this->height());
1149        if (fMouseX >= width) fMouseX = width - 1;
1150        else if (fMouseX < 0) fMouseX = 0;
1151        if (fMouseY >= height) fMouseY = height - 1;
1152        else if (fMouseY < 0) fMouseY = 0;
1153
1154        SkBitmap bitmap = capture_bitmap(canvas);
1155        bitmap.lockPixels();
1156
1157        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1158        int zoomedWidth = (width >> 1) | 1;
1159        int zoomedHeight = (height >> 1) | 1;
1160        SkIRect src;
1161        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1162        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1163        SkRect dest;
1164        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1165        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1166        SkPaint paint;
1167        // Clear the background behind our zoomed in view
1168        paint.setColor(SK_ColorWHITE);
1169        canvas->drawRect(dest, paint);
1170        canvas->drawBitmapRect(bitmap, &src, dest);
1171        paint.setColor(SK_ColorBLACK);
1172        paint.setStyle(SkPaint::kStroke_Style);
1173        // Draw a border around the pixel in the middle
1174        SkRect originalPixel;
1175        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1176        SkMatrix matrix;
1177        SkRect scalarSrc;
1178        scalarSrc.set(src);
1179        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1180        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1181            SkRect pixel;
1182            matrix.mapRect(&pixel, originalPixel);
1183            // TODO Perhaps measure the values and make the outline white if it's "dark"
1184            if (color == SK_ColorBLACK) {
1185                paint.setColor(SK_ColorWHITE);
1186            }
1187            canvas->drawRect(pixel, paint);
1188        }
1189        paint.setColor(SK_ColorBLACK);
1190        // Draw a border around the destination rectangle
1191        canvas->drawRect(dest, paint);
1192        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1193        // Identify the pixel and its color on screen
1194        paint.setTypeface(fTypeface);
1195        paint.setAntiAlias(true);
1196        SkScalar lineHeight = paint.getFontMetrics(NULL);
1197        SkString string;
1198        string.appendf("(%i, %i)", fMouseX, fMouseY);
1199        SkScalar left = dest.fLeft + SkIntToScalar(3);
1200        SkScalar i = SK_Scalar1;
1201        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1202        // Alpha
1203        i += SK_Scalar1;
1204        string.reset();
1205        string.appendf("A: %X", SkColorGetA(color));
1206        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1207        // Red
1208        i += SK_Scalar1;
1209        string.reset();
1210        string.appendf("R: %X", SkColorGetR(color));
1211        paint.setColor(SK_ColorRED);
1212        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1213        // Green
1214        i += SK_Scalar1;
1215        string.reset();
1216        string.appendf("G: %X", SkColorGetG(color));
1217        paint.setColor(SK_ColorGREEN);
1218        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1219        // Blue
1220        i += SK_Scalar1;
1221        string.reset();
1222        string.appendf("B: %X", SkColorGetB(color));
1223        paint.setColor(SK_ColorBLUE);
1224        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1225        canvas->restoreToCount(count);
1226}
1227
1228void SampleWindow::onDraw(SkCanvas* canvas) {
1229}
1230
1231#include "SkColorPriv.h"
1232
1233#if 0 // UNUSED
1234static void reverseRedAndBlue(const SkBitmap& bm) {
1235    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1236    uint8_t* p = (uint8_t*)bm.getPixels();
1237    uint8_t* stop = p + bm.getSize();
1238    while (p < stop) {
1239        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1240        unsigned scale = SkAlpha255To256(p[3]);
1241        unsigned r = p[2];
1242        unsigned b = p[0];
1243        p[0] = SkAlphaMul(r, scale);
1244        p[1] = SkAlphaMul(p[1], scale);
1245        p[2] = SkAlphaMul(b, scale);
1246        p += 4;
1247    }
1248}
1249#endif
1250
1251void SampleWindow::saveToPdf()
1252{
1253    fSaveToPdf = true;
1254    this->inval(NULL);
1255}
1256
1257SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1258    if (fSaveToPdf) {
1259        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1260        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1261        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1262                canvas->getTotalMatrix());
1263        fPdfCanvas = new SkCanvas(pdfDevice);
1264        pdfDevice->unref();
1265        canvas = fPdfCanvas;
1266    } else {
1267        switch (fDeviceType) {
1268            case kRaster_DeviceType:
1269                // fallthrough
1270#if SK_SUPPORT_GPU
1271            case kGPU_DeviceType:
1272                // fallthrough
1273#if SK_ANGLE
1274            case kANGLE_DeviceType:
1275#endif // SK_ANGLE
1276#endif // SK_SUPPORT_GPU
1277                canvas = this->INHERITED::beforeChildren(canvas);
1278                break;
1279            case kPicture_DeviceType:
1280                fPicture = new SkPicture;
1281                canvas = fPicture->beginRecording(9999, 9999);
1282                break;
1283#if SK_SUPPORT_GPU
1284            case kNullGPU_DeviceType:
1285                break;
1286#endif
1287            default:
1288                SkASSERT(false);
1289                break;
1290        }
1291    }
1292
1293    if (fUseClip) {
1294        canvas->drawColor(0xFFFF88FF);
1295        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1296    }
1297
1298    return canvas;
1299}
1300
1301static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1302                      const SkRegion& rgn) {
1303    SkCanvas    canvas(bm);
1304    SkRegion    inval(rgn);
1305
1306    inval.translate(r.fLeft, r.fTop);
1307    canvas.clipRegion(inval);
1308    canvas.drawColor(0xFFFF8080);
1309}
1310#include "SkData.h"
1311void SampleWindow::afterChildren(SkCanvas* orig) {
1312    if (fSaveToPdf) {
1313        fSaveToPdf = false;
1314        if (fShowZoomer) {
1315            showZoomer(fPdfCanvas);
1316        }
1317        SkString name;
1318        name.printf("%s.pdf", this->getTitle());
1319        SkPDFDocument doc;
1320        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1321        doc.appendPage(device);
1322#ifdef SK_BUILD_FOR_ANDROID
1323        name.prepend("/sdcard/");
1324#endif
1325
1326#ifdef SK_BUILD_FOR_IOS
1327        SkDynamicMemoryWStream mstream;
1328        doc.emitPDF(&mstream);
1329        fPDFData = mstream.copyToData();
1330#endif
1331        SkFILEWStream stream(name.c_str());
1332        if (stream.isValid()) {
1333            doc.emitPDF(&stream);
1334            const char* desc = "File saved from Skia SampleApp";
1335            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1336        }
1337
1338        delete fPdfCanvas;
1339        fPdfCanvas = NULL;
1340
1341        // We took over the draw calls in order to create the PDF, so we need
1342        // to redraw.
1343        this->inval(NULL);
1344        return;
1345    }
1346
1347    if (fRequestGrabImage) {
1348        fRequestGrabImage = false;
1349
1350        SkDevice* device = orig->getDevice();
1351        SkBitmap bmp;
1352        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1353            static int gSampleGrabCounter;
1354            SkString name;
1355            name.printf("sample_grab_%d", gSampleGrabCounter++);
1356            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1357                                       SkImageEncoder::kPNG_Type, 100);
1358        }
1359    }
1360
1361    if (kPicture_DeviceType == fDeviceType) {
1362        if (true) {
1363            SkPicture* pict = new SkPicture(*fPicture);
1364            fPicture->unref();
1365            this->installDrawFilter(orig);
1366            orig->drawPicture(*pict);
1367            pict->unref();
1368        } else if (true) {
1369            SkDynamicMemoryWStream ostream;
1370            fPicture->serialize(&ostream);
1371            fPicture->unref();
1372
1373            SkAutoDataUnref data(ostream.copyToData());
1374            SkMemoryStream istream(data->data(), data->size());
1375            SkPicture pict(&istream);
1376            orig->drawPicture(pict);
1377        } else {
1378            fPicture->draw(orig);
1379            fPicture->unref();
1380        }
1381        fPicture = NULL;
1382    }
1383
1384    // Do this after presentGL and other finishing, rather than in afterChild
1385    if (fMeasureFPS && fMeasureFPS_Time) {
1386        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
1387        this->updateTitle();
1388        this->postInvalDelay();
1389    }
1390
1391    //    if ((fScrollTestX | fScrollTestY) != 0)
1392    if (false) {
1393        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1394        int dx = fScrollTestX * 7;
1395        int dy = fScrollTestY * 7;
1396        SkIRect r;
1397        SkRegion inval;
1398
1399        r.set(50, 50, 50+100, 50+100);
1400        bm.scrollRect(&r, dx, dy, &inval);
1401        paint_rgn(bm, r, inval);
1402    }
1403#ifdef DEBUGGER
1404    SkView* curr = curr_view(this);
1405    if (fDebugger && !is_debugger(curr) && !is_transition(curr) && !is_overview(curr)) {
1406        //Stop Pipe when fDebugger is active
1407        if (fPipeState != SkOSMenu::kOffState) {
1408            fPipeState = SkOSMenu::kOffState;
1409            (void)SampleView::SetUsePipe(curr, fPipeState);
1410            fAppMenu->getItemByID(fUsePipeMenuItemID)->setTriState(fPipeState);
1411            this->onUpdateMenu(fAppMenu);
1412        }
1413
1414        //Reset any transformations
1415        fGesture.stop();
1416        fGesture.reset();
1417
1418        this->loadView(create_debugger(gTempDataStore.begin(),
1419                                       gTempDataStore.count()));
1420    }
1421#endif
1422}
1423
1424void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1425    if (fScale) {
1426        SkScalar scale = SK_Scalar1 * 7 / 10;
1427        SkScalar cx = this->width() / 2;
1428        SkScalar cy = this->height() / 2;
1429        canvas->translate(cx, cy);
1430        canvas->scale(scale, scale);
1431        canvas->translate(-cx, -cy);
1432    }
1433    if (fRotate) {
1434        SkScalar cx = this->width() / 2;
1435        SkScalar cy = this->height() / 2;
1436        canvas->translate(cx, cy);
1437        canvas->rotate(SkIntToScalar(30));
1438        canvas->translate(-cx, -cy);
1439    }
1440    if (fPerspAnim) {
1441        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1442
1443        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1444        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1445        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1446        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1447            t = gAnimPeriod - t;
1448        }
1449        t = 2 * t - gAnimPeriod;
1450        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1451        SkMatrix m;
1452        m.reset();
1453        m.setPerspY(t);
1454        canvas->concat(m);
1455    }
1456
1457    this->installDrawFilter(canvas);
1458
1459    if (fMeasureFPS) {
1460        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
1461        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1462            fMeasureFPS_Time = SkTime::GetMSecs();
1463        }
1464    } else {
1465        (void)SampleView::SetRepeatDraw(child, 1);
1466    }
1467    if (fPerspAnim) {
1468        this->inval(NULL);
1469    }
1470}
1471
1472void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1473    canvas->setDrawFilter(NULL);
1474}
1475
1476static SkBitmap::Config gConfigCycle[] = {
1477    SkBitmap::kNo_Config,           // none -> none
1478    SkBitmap::kNo_Config,           // a1 -> none
1479    SkBitmap::kNo_Config,           // a8 -> none
1480    SkBitmap::kNo_Config,           // index8 -> none
1481    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1482    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1483    SkBitmap::kRGB_565_Config       // 8888 -> 565
1484};
1485
1486static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1487    return gConfigCycle[c];
1488}
1489
1490void SampleWindow::changeZoomLevel(float delta) {
1491    fZoomLevel += SkFloatToScalar(delta);
1492    if (fZoomLevel > 0) {
1493        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1494        fZoomScale = fZoomLevel + SK_Scalar1;
1495    } else if (fZoomLevel < 0) {
1496        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1497        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1498    } else {
1499        fZoomScale = SK_Scalar1;
1500    }
1501    this->updateMatrix();
1502}
1503
1504void SampleWindow::updateMatrix(){
1505    SkMatrix m;
1506    m.reset();
1507    if (fZoomLevel) {
1508        SkPoint center;
1509        //m = this->getLocalMatrix();//.invert(&m);
1510        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1511        SkScalar cx = center.fX;
1512        SkScalar cy = center.fY;
1513
1514        m.setTranslate(-cx, -cy);
1515        m.postScale(fZoomScale, fZoomScale);
1516        m.postTranslate(cx, cy);
1517    }
1518
1519    if (fFlipAxis) {
1520        m.preTranslate(fZoomCenterX, fZoomCenterY);
1521        if (fFlipAxis & kFlipAxis_X) {
1522            m.preScale(-SK_Scalar1, SK_Scalar1);
1523        }
1524        if (fFlipAxis & kFlipAxis_Y) {
1525            m.preScale(SK_Scalar1, -SK_Scalar1);
1526        }
1527        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1528        //canvas->concat(m);
1529    }
1530    // Apply any gesture matrix
1531    m.preConcat(fGesture.localM());
1532    m.preConcat(fGesture.globalM());
1533
1534    this->setLocalMatrix(m);
1535
1536    this->updateTitle();
1537    this->inval(NULL);
1538}
1539bool SampleWindow::previousSample() {
1540    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1541    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1542                                     fTransitionPrev));
1543    return true;
1544}
1545
1546bool SampleWindow::nextSample() {
1547    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1548    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1549                                     fTransitionNext));
1550    return true;
1551}
1552
1553bool SampleWindow::goToSample(int i) {
1554    fCurrIndex = (i) % fSamples.count();
1555    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1556    return true;
1557}
1558
1559SkString SampleWindow::getSampleTitle(int i) {
1560    SkView* view = (*fSamples[i])();
1561    SkString title;
1562    SampleCode::RequestTitle(view, &title);
1563    view->unref();
1564    return title;
1565}
1566
1567int SampleWindow::sampleCount() {
1568    return fSamples.count();
1569}
1570
1571void SampleWindow::showOverview() {
1572    this->loadView(create_transition(curr_view(this),
1573                                     create_overview(fSamples.count(), fSamples.begin()),
1574                                     4));
1575}
1576
1577void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1578    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1579                                              fFilterState, fHintingState))->unref();
1580}
1581
1582void SampleWindow::postAnimatingEvent() {
1583    if (fAnimating) {
1584        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1585    }
1586}
1587
1588bool SampleWindow::onEvent(const SkEvent& evt) {
1589    if (evt.isType(gUpdateWindowTitleEvtName)) {
1590        this->updateTitle();
1591        return true;
1592    }
1593    if (evt.isType(ANIMATING_EVENTTYPE)) {
1594        if (fAnimating) {
1595            this->nextSample();
1596            this->postAnimatingEvent();
1597        }
1598        return true;
1599    }
1600    if (evt.isType("replace-transition-view")) {
1601        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1602        return true;
1603    }
1604    if (evt.isType("set-curr-index")) {
1605        this->goToSample(evt.getFast32());
1606        return true;
1607    }
1608    if (isInvalEvent(evt)) {
1609        this->inval(NULL);
1610        return true;
1611    }
1612    int selected = -1;
1613    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1614        this->setDeviceType((DeviceType)selected);
1615        return true;
1616    }
1617    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1618#ifdef PIPE_NET
1619        if (!fPipeState != SkOSMenu::kOnState)
1620            gServer.disconnectAll();
1621#endif
1622        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1623        this->updateTitle();
1624        this->inval(NULL);
1625        return true;
1626    }
1627    if (SkOSMenu::FindTriState(evt, "Tiling", &fTilingState)) {
1628        int nx = 1, ny = 1;
1629        switch (fTilingState) {
1630            case SkOSMenu::kOffState:   nx = 1; ny = 1; break;
1631            case SkOSMenu::kMixedState: nx = 1; ny = 4; break;
1632            case SkOSMenu::kOnState:    nx = 2; ny = 2; break;
1633        }
1634        (void)SampleView::SetTileCount(curr_view(this), nx, ny);
1635        this->updateTitle();
1636        this->inval(NULL);
1637        return true;
1638    }
1639    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1640        this->toggleSlideshow();
1641        return true;
1642    }
1643    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1644        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1645        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1646        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1647        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1648        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1649        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1650        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1651        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1652        this->inval(NULL);
1653        this->updateTitle();
1654        return true;
1655    }
1656    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1657        fFlipAxis ^= kFlipAxis_X;
1658        this->updateMatrix();
1659        return true;
1660    }
1661    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1662        fFlipAxis ^= kFlipAxis_Y;
1663        this->updateMatrix();
1664        return true;
1665    }
1666    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1667        this->saveToPdf();
1668        return true;
1669    }
1670#ifdef DEBUGGER
1671    if (SkOSMenu::FindSwitchState(evt, "Debugger", &fDebugger)) {
1672        if (fDebugger) {
1673            fPipeState = SkOSMenu::kOnState;
1674            (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1675        } else {
1676            this->loadView((*fSamples[fCurrIndex])());
1677        }
1678        this->inval(NULL);
1679        return true;
1680    }
1681#endif
1682    return this->INHERITED::onEvent(evt);
1683}
1684
1685bool SampleWindow::onQuery(SkEvent* query) {
1686    if (query->isType("get-slide-count")) {
1687        query->setFast32(fSamples.count());
1688        return true;
1689    }
1690    if (query->isType("get-slide-title")) {
1691        SkView* view = (*fSamples[query->getFast32()])();
1692        SkEvent evt(gTitleEvtName);
1693        if (view->doQuery(&evt)) {
1694            query->setString("title", evt.findString(gTitleEvtName));
1695        }
1696        SkSafeUnref(view);
1697        return true;
1698    }
1699    if (query->isType("use-fast-text")) {
1700        SkEvent evt(gFastTextEvtName);
1701        return curr_view(this)->doQuery(&evt);
1702    }
1703    if (query->isType("ignore-window-bitmap")) {
1704        query->setFast32(this->getGrContext() != NULL);
1705        return true;
1706    }
1707    return this->INHERITED::onQuery(query);
1708}
1709
1710#if 0 // UNUSED
1711static void cleanup_for_filename(SkString* name) {
1712    char* str = name->writable_str();
1713    for (size_t i = 0; i < name->size(); i++) {
1714        switch (str[i]) {
1715            case ':': str[i] = '-'; break;
1716            case '/': str[i] = '-'; break;
1717            case ' ': str[i] = '_'; break;
1718            default: break;
1719        }
1720    }
1721}
1722#endif
1723
1724bool SampleWindow::onHandleChar(SkUnichar uni) {
1725    {
1726        SkView* view = curr_view(this);
1727        if (view) {
1728            SkEvent evt(gCharEvtName);
1729            evt.setFast32(uni);
1730            if (view->doQuery(&evt)) {
1731                return true;
1732            }
1733        }
1734    }
1735
1736    int dx = 0xFF;
1737    int dy = 0xFF;
1738
1739    switch (uni) {
1740        case '5': dx =  0; dy =  0; break;
1741        case '8': dx =  0; dy = -1; break;
1742        case '6': dx =  1; dy =  0; break;
1743        case '2': dx =  0; dy =  1; break;
1744        case '4': dx = -1; dy =  0; break;
1745        case '7': dx = -1; dy = -1; break;
1746        case '9': dx =  1; dy = -1; break;
1747        case '3': dx =  1; dy =  1; break;
1748        case '1': dx = -1; dy =  1; break;
1749
1750        default:
1751            break;
1752    }
1753
1754    if (0xFF != dx && 0xFF != dy) {
1755        if ((dx | dy) == 0) {
1756            fScrollTestX = fScrollTestY = 0;
1757        } else {
1758            fScrollTestX += dx;
1759            fScrollTestY += dy;
1760        }
1761        this->inval(NULL);
1762        return true;
1763    }
1764
1765    switch (uni) {
1766        case 'f':
1767            // only
1768            toggleFPS();
1769            break;
1770        case 'g':
1771            fRequestGrabImage = true;
1772            this->inval(NULL);
1773            break;
1774        case 'i':
1775            this->zoomIn();
1776            break;
1777        case 'o':
1778            this->zoomOut();
1779            break;
1780        case 'r':
1781            fRotate = !fRotate;
1782            this->inval(NULL);
1783            this->updateTitle();
1784            return true;
1785        case 'k':
1786            fPerspAnim = !fPerspAnim;
1787            this->inval(NULL);
1788            this->updateTitle();
1789            return true;
1790#if SK_SUPPORT_GPU
1791        case '\\':
1792            this->setDeviceType(kNullGPU_DeviceType);
1793            this->inval(NULL);
1794            this->updateTitle();
1795            return true;
1796        case 'p':
1797            {
1798                GrContext* grContext = this->getGrContext();
1799                if (grContext) {
1800                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1801                    grContext->freeGpuResources();
1802                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1803                             cacheBytes);
1804                }
1805            }
1806            return true;
1807#endif
1808        case 's':
1809            fScale = !fScale;
1810            this->inval(NULL);
1811            this->updateTitle();
1812            return true;
1813        default:
1814            break;
1815    }
1816
1817    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1818        this->onUpdateMenu(fAppMenu);
1819        this->onUpdateMenu(fSlideMenu);
1820        return true;
1821    }
1822    return this->INHERITED::onHandleChar(uni);
1823}
1824
1825void SampleWindow::setDeviceType(DeviceType type) {
1826    if (type == fDeviceType)
1827        return;
1828
1829    fDevManager->tearDownBackend(this);
1830
1831    fDeviceType = type;
1832
1833    fDevManager->setUpBackend(this, fMSAASampleCount);
1834
1835    this->updateTitle();
1836    this->inval(NULL);
1837}
1838
1839void SampleWindow::toggleSlideshow() {
1840    fAnimating = !fAnimating;
1841    this->postAnimatingEvent();
1842    this->updateTitle();
1843}
1844
1845void SampleWindow::toggleRendering() {
1846    this->setDeviceType(cycle_devicetype(fDeviceType));
1847    this->updateTitle();
1848    this->inval(NULL);
1849}
1850
1851void SampleWindow::toggleFPS() {
1852    fMeasureFPS = !fMeasureFPS;
1853    this->updateTitle();
1854    this->inval(NULL);
1855}
1856
1857#include "SkDumpCanvas.h"
1858
1859bool SampleWindow::onHandleKey(SkKey key) {
1860    {
1861        SkView* view = curr_view(this);
1862        if (view) {
1863            SkEvent evt(gKeyEvtName);
1864            evt.setFast32(key);
1865            if (view->doQuery(&evt)) {
1866                return true;
1867            }
1868        }
1869    }
1870    switch (key) {
1871        case kRight_SkKey:
1872            if (this->nextSample()) {
1873                return true;
1874            }
1875            break;
1876        case kLeft_SkKey:
1877            if (this->previousSample()) {
1878                return true;
1879            }
1880            return true;
1881        case kUp_SkKey:
1882            if (USE_ARROWS_FOR_ZOOM) {
1883                this->changeZoomLevel(1.f);
1884            } else {
1885                fNClip = !fNClip;
1886                this->inval(NULL);
1887                this->updateTitle();
1888            }
1889            return true;
1890        case kDown_SkKey:
1891            if (USE_ARROWS_FOR_ZOOM) {
1892                this->changeZoomLevel(-1.f);
1893            } else {
1894                this->setConfig(cycle_configs(this->getBitmap().config()));
1895                this->updateTitle();
1896            }
1897            return true;
1898        case kOK_SkKey: {
1899            SkString title;
1900            if (curr_title(this, &title)) {
1901                writeTitleToPrefs(title.c_str());
1902            }
1903            return true;
1904        }
1905        case kBack_SkKey:
1906            this->showOverview();
1907            return true;
1908        default:
1909            break;
1910    }
1911    return this->INHERITED::onHandleKey(key);
1912}
1913
1914///////////////////////////////////////////////////////////////////////////////
1915
1916static const char gGestureClickType[] = "GestureClickType";
1917
1918bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1919        void* owner) {
1920    if (Click::kMoved_State == state) {
1921        updatePointer(x, y);
1922    }
1923    int w = SkScalarRound(this->width());
1924    int h = SkScalarRound(this->height());
1925
1926    // check for the resize-box
1927    if (w - x < 16 && h - y < 16) {
1928        return false;   // let the OS handle the click
1929    }
1930    else if (fMagnify) {
1931        //it's only necessary to update the drawing if there's a click
1932        this->inval(NULL);
1933        return false; //prevent dragging while magnify is enabled
1934    }
1935    else {
1936        return this->INHERITED::onDispatchClick(x, y, state, owner);
1937    }
1938}
1939
1940class GestureClick : public SkView::Click {
1941public:
1942    GestureClick(SkView* target) : SkView::Click(target) {
1943        this->setType(gGestureClickType);
1944    }
1945
1946    static bool IsGesture(Click* click) {
1947        return click->isType(gGestureClickType);
1948    }
1949};
1950
1951SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1952    return new GestureClick(this);
1953}
1954
1955bool SampleWindow::onClick(Click* click) {
1956    if (GestureClick::IsGesture(click)) {
1957        float x = static_cast<float>(click->fICurr.fX);
1958        float y = static_cast<float>(click->fICurr.fY);
1959
1960        switch (click->fState) {
1961            case SkView::Click::kDown_State:
1962                fGesture.touchBegin(click->fOwner, x, y);
1963                break;
1964            case SkView::Click::kMoved_State:
1965                fGesture.touchMoved(click->fOwner, x, y);
1966                this->updateMatrix();
1967                break;
1968            case SkView::Click::kUp_State:
1969                fGesture.touchEnd(click->fOwner);
1970                this->updateMatrix();
1971                break;
1972        }
1973        return true;
1974    }
1975    return false;
1976}
1977
1978///////////////////////////////////////////////////////////////////////////////
1979
1980void SampleWindow::loadView(SkView* view) {
1981    SkView::F2BIter iter(this);
1982    SkView* prev = iter.next();
1983    if (prev) {
1984        prev->detachFromParent();
1985    }
1986
1987    view->setVisibleP(true);
1988    view->setClipToBounds(false);
1989    this->attachChildToFront(view)->unref();
1990    view->setSize(this->width(), this->height());
1991
1992    //repopulate the slide menu when a view is loaded
1993    fSlideMenu->reset();
1994#ifdef DEBUGGER
1995    if (!is_debugger(view) && !is_overview(view) && !is_transition(view) && fDebugger) {
1996        //Force Pipe to be on if using debugger
1997        fPipeState = SkOSMenu::kOnState;
1998    }
1999#endif
2000    (void)SampleView::SetUsePipe(view, fPipeState);
2001    if (SampleView::IsSampleView(view))
2002        ((SampleView*)view)->requestMenu(fSlideMenu);
2003    this->onUpdateMenu(fSlideMenu);
2004    this->updateTitle();
2005}
2006
2007static const char* gConfigNames[] = {
2008    "unknown config",
2009    "A1",
2010    "A8",
2011    "Index8",
2012    "565",
2013    "4444",
2014    "8888"
2015};
2016
2017static const char* configToString(SkBitmap::Config c) {
2018    return gConfigNames[c];
2019}
2020
2021static const char* gDeviceTypePrefix[] = {
2022    "raster: ",
2023    "picture: ",
2024#if SK_SUPPORT_GPU
2025    "opengl: ",
2026#if SK_ANGLE
2027    "angle: ",
2028#endif // SK_ANGLE
2029    "null-gl: "
2030#endif // SK_SUPPORT_GPU
2031};
2032SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2033                  array_size_mismatch);
2034
2035static const bool gDeviceTypeIsGPU[] = {
2036    false,
2037    false,
2038#if SK_SUPPORT_GPU
2039    true,
2040#if SK_ANGLE
2041    true,
2042#endif // SK_ANGLE
2043    true
2044#endif // SK_SUPPORT_GPU
2045};
2046SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypeIsGPU) == SampleWindow::kDeviceTypeCnt,
2047                  array_size_mismatch);
2048
2049
2050static const char* trystate_str(SkOSMenu::TriState state,
2051                                const char trueStr[], const char falseStr[]) {
2052    if (SkOSMenu::kOnState == state) {
2053        return trueStr;
2054    } else if (SkOSMenu::kOffState == state) {
2055        return falseStr;
2056    }
2057    return NULL;
2058}
2059
2060void SampleWindow::updateTitle() {
2061    SkView* view = curr_view(this);
2062
2063    SkString title;
2064    if (!curr_title(this, &title)) {
2065        title.set("<unknown>");
2066    }
2067
2068    title.prepend(gDeviceTypePrefix[fDeviceType]);
2069
2070    title.prepend(" ");
2071    title.prepend(configToString(this->getBitmap().config()));
2072
2073    if (fAnimating) {
2074        title.prepend("<A> ");
2075    }
2076    if (fScale) {
2077        title.prepend("<S> ");
2078    }
2079    if (fRotate) {
2080        title.prepend("<R> ");
2081    }
2082    if (fNClip) {
2083        title.prepend("<C> ");
2084    }
2085    if (fPerspAnim) {
2086        title.prepend("<K> ");
2087    }
2088
2089    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2090    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2091    title.prepend(trystate_str(fFilterState, "H ", "h "));
2092    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2093    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2094
2095    if (fZoomLevel) {
2096        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2097    }
2098
2099    if (fMeasureFPS) {
2100        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
2101    }
2102    if (SampleView::IsSampleView(view)) {
2103        switch (fPipeState) {
2104            case SkOSMenu::kOnState:
2105                title.prepend("<Pipe> ");
2106                break;
2107            case SkOSMenu::kMixedState:
2108                title.prepend("<Tiled Pipe> ");
2109                break;
2110
2111            default:
2112                break;
2113        }
2114        title.prepend("! ");
2115    }
2116
2117#if SK_SUPPORT_GPU
2118    if (gDeviceTypeIsGPU[fDeviceType] &&
2119        NULL != fDevManager &&
2120        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2121        title.appendf(" [MSAA: %d]",
2122                       fDevManager->getGrRenderTarget()->numSamples());
2123    }
2124#endif
2125
2126    this->setTitle(title.c_str());
2127}
2128
2129void SampleWindow::onSizeChange() {
2130    this->INHERITED::onSizeChange();
2131
2132    SkView::F2BIter iter(this);
2133    SkView* view = iter.next();
2134    view->setSize(this->width(), this->height());
2135
2136    // rebuild our clippath
2137    {
2138        const SkScalar W = this->width();
2139        const SkScalar H = this->height();
2140
2141        fClipPath.reset();
2142#if 0
2143        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2144            SkRect r;
2145            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2146            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2147                fClipPath.addRect(r);
2148        }
2149#else
2150        SkRect r;
2151        r.set(0, 0, W, H);
2152        fClipPath.addRect(r, SkPath::kCCW_Direction);
2153        r.set(W/4, H/4, W*3/4, H*3/4);
2154        fClipPath.addRect(r, SkPath::kCW_Direction);
2155#endif
2156    }
2157
2158    fZoomCenterX = SkScalarHalf(this->width());
2159    fZoomCenterY = SkScalarHalf(this->height());
2160
2161#ifdef SK_BUILD_FOR_ANDROID
2162    // FIXME: The first draw after a size change does not work on Android, so
2163    // we post an invalidate.
2164    this->postInvalDelay();
2165#endif
2166    this->updateTitle();    // to refresh our config
2167    fDevManager->windowSizeChanged(this);
2168}
2169
2170///////////////////////////////////////////////////////////////////////////////
2171
2172static const char is_sample_view_tag[] = "sample-is-sample-view";
2173static const char repeat_count_tag[] = "sample-set-repeat-count";
2174static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2175static const char set_tile_count_tag[] = "sample-set-tile-count";
2176
2177bool SampleView::IsSampleView(SkView* view) {
2178    SkEvent evt(is_sample_view_tag);
2179    return view->doQuery(&evt);
2180}
2181
2182bool SampleView::SetRepeatDraw(SkView* view, int count) {
2183    SkEvent evt(repeat_count_tag);
2184    evt.setFast32(count);
2185    return view->doEvent(evt);
2186}
2187
2188bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2189    SkEvent evt;
2190    evt.setS32(set_use_pipe_tag, state);
2191    return view->doEvent(evt);
2192}
2193
2194bool SampleView::SetTileCount(SkView* view, int nx, int ny) {
2195    SkEvent evt(set_tile_count_tag);
2196    evt.setFast32((ny << 16) | nx);
2197    return view->doEvent(evt);
2198}
2199
2200bool SampleView::onEvent(const SkEvent& evt) {
2201    if (evt.isType(repeat_count_tag)) {
2202        fRepeatCount = evt.getFast32();
2203        return true;
2204    }
2205    if (evt.isType(set_tile_count_tag)) {
2206        unsigned packed = evt.getFast32();
2207        fTileCount.set(packed & 0xFFFF, packed >> 16);
2208        return true;
2209    }
2210    int32_t pipeHolder;
2211    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2212        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2213        return true;
2214    }
2215    return this->INHERITED::onEvent(evt);
2216}
2217
2218bool SampleView::onQuery(SkEvent* evt) {
2219    if (evt->isType(is_sample_view_tag)) {
2220        return true;
2221    }
2222    return this->INHERITED::onQuery(evt);
2223}
2224
2225
2226class SimplePC : public SkGPipeController {
2227public:
2228    SimplePC(SkCanvas* target);
2229    ~SimplePC();
2230
2231    virtual void* requestBlock(size_t minRequest, size_t* actual);
2232    virtual void notifyWritten(size_t bytes);
2233
2234private:
2235    SkGPipeReader   fReader;
2236    void*           fBlock;
2237    size_t          fBlockSize;
2238    size_t          fBytesWritten;
2239    int             fAtomsWritten;
2240    SkGPipeReader::Status   fStatus;
2241
2242    size_t        fTotalWritten;
2243};
2244
2245SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2246    fBlock = NULL;
2247    fBlockSize = fBytesWritten = 0;
2248    fStatus = SkGPipeReader::kDone_Status;
2249    fTotalWritten = 0;
2250    fAtomsWritten = 0;
2251}
2252
2253SimplePC::~SimplePC() {
2254//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2255    if (fTotalWritten) {
2256        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2257                 fAtomsWritten, fStatus);
2258#ifdef  PIPE_FILE
2259        //File is open in append mode
2260        FILE* f = fopen(FILE_PATH, "ab");
2261        SkASSERT(f != NULL);
2262        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2263        fclose(f);
2264#endif
2265#ifdef PIPE_NET
2266        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2267            gServer.acceptConnections();
2268            gServer.writePacket(fBlock, fTotalWritten);
2269        }
2270#endif
2271#ifdef  DEBUGGER
2272        gTempDataStore.reset();
2273        gTempDataStore.append(fTotalWritten, (const char*)fBlock);
2274#endif
2275    }
2276    sk_free(fBlock);
2277}
2278
2279void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2280    sk_free(fBlock);
2281
2282    fBlockSize = minRequest * 4;
2283    fBlock = sk_malloc_throw(fBlockSize);
2284    fBytesWritten = 0;
2285    *actual = fBlockSize;
2286    return fBlock;
2287}
2288
2289void SimplePC::notifyWritten(size_t bytes) {
2290    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2291    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2292    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2293    fBytesWritten += bytes;
2294    fTotalWritten += bytes;
2295
2296    fAtomsWritten += 1;
2297}
2298
2299void SampleView::draw(SkCanvas* canvas) {
2300    if (SkOSMenu::kOffState == fPipeState) {
2301        this->INHERITED::draw(canvas);
2302    } else {
2303        SkGPipeWriter writer;
2304        SimplePC controller(canvas);
2305        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2306                               &canvas->getTotalMatrix());
2307        SkGPipeController* pc;
2308        if (SkOSMenu::kMixedState == fPipeState) {
2309            pc = &tc;
2310        } else {
2311            pc = &controller;
2312        }
2313        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2314
2315        canvas = writer.startRecording(pc, flags);
2316        //Must draw before controller goes out of scope and sends data
2317        this->INHERITED::draw(canvas);
2318        //explicitly end recording to ensure writer is flushed before the memory
2319        //is freed in the deconstructor of the controller
2320        writer.endRecording();
2321    }
2322}
2323void SampleView::onDraw(SkCanvas* canvas) {
2324    this->onDrawBackground(canvas);
2325
2326    const SkScalar cw = this->width() / fTileCount.width();
2327    const SkScalar ch = this->height() / fTileCount.height();
2328
2329    for (int i = 0; i < fRepeatCount; i++) {
2330        for (int y = 0; y < fTileCount.height(); ++y) {
2331            for (int x = 0; x < fTileCount.width(); ++x) {
2332                SkAutoCanvasRestore acr(canvas, true);
2333                canvas->clipRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch));
2334                this->onDrawContent(canvas);
2335            }
2336        }
2337    }
2338
2339    if (!fTileCount.equals(1, 1)) {
2340        SkPaint paint;
2341        paint.setColor(0x60FF00FF);
2342        paint.setStyle(SkPaint::kStroke_Style);
2343        for (int y = 0; y < fTileCount.height(); ++y) {
2344            for (int x = 0; x < fTileCount.width(); ++x) {
2345                canvas->drawRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch), paint);
2346            }
2347        }
2348    }
2349}
2350
2351void SampleView::onDrawBackground(SkCanvas* canvas) {
2352    canvas->drawColor(fBGColor);
2353}
2354
2355///////////////////////////////////////////////////////////////////////////////
2356
2357template <typename T> void SkTBSort(T array[], int count) {
2358    for (int i = 1; i < count - 1; i++) {
2359        bool didSwap = false;
2360        for (int j = count - 1; j > i; --j) {
2361            if (array[j] < array[j-1]) {
2362                T tmp(array[j-1]);
2363                array[j-1] = array[j];
2364                array[j] = tmp;
2365                didSwap = true;
2366            }
2367        }
2368        if (!didSwap) {
2369            break;
2370        }
2371    }
2372
2373    for (int k = 0; k < count - 1; k++) {
2374        SkASSERT(!(array[k+1] < array[k]));
2375    }
2376}
2377
2378#include "SkRandom.h"
2379
2380static void rand_rect(SkIRect* rect, SkRandom& rand) {
2381    int bits = 8;
2382    int shift = 32 - bits;
2383    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2384              rand.nextU() >> shift, rand.nextU() >> shift);
2385    rect->sort();
2386}
2387
2388static void dumpRect(const SkIRect& r) {
2389    SkDebugf(" { %d, %d, %d, %d },\n",
2390             r.fLeft, r.fTop,
2391             r.fRight, r.fBottom);
2392}
2393
2394static void test_rects(const SkIRect rect[], int count) {
2395    SkRegion rgn0, rgn1;
2396
2397    for (int i = 0; i < count; i++) {
2398        rgn0.op(rect[i], SkRegion::kUnion_Op);
2399     //   dumpRect(rect[i]);
2400    }
2401    rgn1.setRects(rect, count);
2402
2403    if (rgn0 != rgn1) {
2404        SkDebugf("\n");
2405        for (int i = 0; i < count; i++) {
2406            dumpRect(rect[i]);
2407        }
2408        SkDebugf("\n");
2409    }
2410}
2411
2412static void test() {
2413    size_t i;
2414
2415    const SkIRect r0[] = {
2416        { 0, 0, 1, 1 },
2417        { 2, 2, 3, 3 },
2418    };
2419    const SkIRect r1[] = {
2420        { 0, 0, 1, 3 },
2421        { 1, 1, 2, 2 },
2422        { 2, 0, 3, 3 },
2423    };
2424    const SkIRect r2[] = {
2425        { 0, 0, 1, 2 },
2426        { 2, 1, 3, 3 },
2427        { 4, 0, 5, 1 },
2428        { 6, 0, 7, 4 },
2429    };
2430
2431    static const struct {
2432        const SkIRect* fRects;
2433        int            fCount;
2434    } gRecs[] = {
2435        { r0, SK_ARRAY_COUNT(r0) },
2436        { r1, SK_ARRAY_COUNT(r1) },
2437        { r2, SK_ARRAY_COUNT(r2) },
2438    };
2439
2440    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2441        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2442    }
2443
2444    SkRandom rand;
2445    for (i = 0; i < 10000; i++) {
2446        SkRegion rgn0, rgn1;
2447
2448        const int N = 8;
2449        SkIRect rect[N];
2450        for (int j = 0; j < N; j++) {
2451            rand_rect(&rect[j], rand);
2452        }
2453        test_rects(rect, N);
2454    }
2455}
2456
2457// FIXME: this should be in a header
2458SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2459SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2460    if (false) { // avoid bit rot, suppress warning
2461        test();
2462    }
2463    return new SampleWindow(hwnd, argc, argv, NULL);
2464}
2465
2466// FIXME: this should be in a header
2467void get_preferred_size(int* x, int* y, int* width, int* height);
2468void get_preferred_size(int* x, int* y, int* width, int* height) {
2469    *x = 10;
2470    *y = 50;
2471    *width = 640;
2472    *height = 480;
2473}
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