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
8#include "SampleApp.h"
9
10#include "OverView.h"
11#include "Resources.h"
12#include "SampleCode.h"
13#include "SkAnimTimer.h"
14#include "SkCanvas.h"
15#include "SkCommandLineFlags.h"
16#include "SkData.h"
17#include "SkDevice.h"
18#include "SkDocument.h"
19#include "SkGraphics.h"
20#include "SkImageEncoder.h"
21#include "SkOSFile.h"
22#include "SkPaint.h"
23#include "SkPaintFilterCanvas.h"
24#include "SkPicture.h"
25#include "SkPictureRecorder.h"
26#include "SkStream.h"
27#include "SkSurface.h"
28#include "SkTemplates.h"
29#include "SkTSort.h"
30#include "SkTime.h"
31#include "SkTypeface.h"
32#include "SkWindow.h"
33#include "sk_tool_utils.h"
34
35#if SK_SUPPORT_GPU
36#include "gl/GrGLInterface.h"
37#include "gl/GrGLUtil.h"
38#include "GrRenderTarget.h"
39#include "GrContext.h"
40#include "SkGpuDevice.h"
41#else
42class GrContext;
43#endif
44
45const struct {
46    SkColorType         fColorType;
47    SkColorProfileType  fProfileType;
48    const char*         fName;
49} gConfig[] = {
50    { kN32_SkColorType,      kLinear_SkColorProfileType, "L32" },
51    { kN32_SkColorType,        kSRGB_SkColorProfileType, "S32" },
52    { kRGBA_F16_SkColorType, kLinear_SkColorProfileType, "F16" },
53};
54
55static const char* find_config_name(const SkImageInfo& info) {
56    for (const auto& config : gConfig) {
57        if (config.fColorType == info.colorType() && config.fProfileType == info.profileType()) {
58            return config.fName;
59        }
60    }
61    return "???";
62}
63
64// Should be 3x + 1
65#define kMaxFatBitsScale    28
66
67extern SampleView* CreateSamplePictFileView(const char filename[]);
68
69class PictFileFactory : public SkViewFactory {
70    SkString fFilename;
71public:
72    PictFileFactory(const SkString& filename) : fFilename(filename) {}
73    SkView* operator() () const override {
74        return CreateSamplePictFileView(fFilename.c_str());
75    }
76};
77
78#ifdef SAMPLE_PDF_FILE_VIEWER
79extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
80
81class PdfFileViewerFactory : public SkViewFactory {
82    SkString fFilename;
83public:
84    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
85    SkView* operator() () const override {
86        return CreateSamplePdfFileViewer(fFilename.c_str());
87    }
88};
89#endif  // SAMPLE_PDF_FILE_VIEWER
90
91#if SK_COMMAND_BUFFER
92#define DEFAULT_TO_COMMAND_BUFFER 1
93#elif SK_ANGLE
94//#define DEFAULT_TO_ANGLE 1
95#else
96#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
97#endif
98
99#define ANIMATING_EVENTTYPE "nextSample"
100#define ANIMATING_DELAY     250
101
102#ifdef SK_DEBUG
103    #define FPS_REPEAT_MULTIPLIER   1
104#else
105    #define FPS_REPEAT_MULTIPLIER   10
106#endif
107#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
108
109static SampleWindow* gSampleWindow;
110
111static bool gShowGMBounds;
112
113static void post_event_to_sink(SkEvent* evt, SkEventSink* sink) {
114    evt->setTargetID(sink->getSinkID())->post();
115}
116
117static SkAnimTimer gAnimTimer;
118
119///////////////////////////////////////////////////////////////////////////////
120
121static const char* skip_until(const char* str, const char* skip) {
122    if (!str) {
123        return nullptr;
124    }
125    return strstr(str, skip);
126}
127
128static const char* skip_past(const char* str, const char* skip) {
129    const char* found = skip_until(str, skip);
130    if (!found) {
131        return nullptr;
132    }
133    return found + strlen(skip);
134}
135
136static const char* gPrefFileName = "sampleapp_prefs.txt";
137
138static bool readTitleFromPrefs(SkString* title) {
139    SkFILEStream stream(gPrefFileName);
140    if (!stream.isValid()) {
141        return false;
142    }
143
144    size_t len = stream.getLength();
145    SkString data(len);
146    stream.read(data.writable_str(), len);
147    const char* s = data.c_str();
148
149    s = skip_past(s, "curr-slide-title");
150    s = skip_past(s, "=");
151    s = skip_past(s, "\"");
152    const char* stop = skip_until(s, "\"");
153    if (stop > s) {
154        title->set(s, stop - s);
155        return true;
156    }
157    return false;
158}
159
160static void writeTitleToPrefs(const char* title) {
161    SkFILEWStream stream(gPrefFileName);
162    SkString data;
163    data.printf("curr-slide-title = \"%s\"\n", title);
164    stream.write(data.c_str(), data.size());
165}
166
167///////////////////////////////////////////////////////////////////////////////
168
169class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
170public:
171
172    DefaultDeviceManager() {
173#if SK_SUPPORT_GPU
174        fCurContext = nullptr;
175        fCurIntf = nullptr;
176        fCurRenderTarget = nullptr;
177        fMSAASampleCount = 0;
178#endif
179        fBackend = kNone_BackEndType;
180    }
181
182    virtual ~DefaultDeviceManager() {
183#if SK_SUPPORT_GPU
184        SkSafeUnref(fCurContext);
185        SkSafeUnref(fCurIntf);
186        SkSafeUnref(fCurRenderTarget);
187#endif
188    }
189
190    void setUpBackend(SampleWindow* win, int msaaSampleCount) override {
191        SkASSERT(kNone_BackEndType == fBackend);
192
193        fBackend = kNone_BackEndType;
194
195#if SK_SUPPORT_GPU
196        switch (win->getDeviceType()) {
197            case kRaster_DeviceType:    // fallthrough
198            case kGPU_DeviceType:
199                // all these guys use the native backend
200                fBackend = kNativeGL_BackEndType;
201                break;
202#if SK_ANGLE
203            case kANGLE_DeviceType:
204                // ANGLE is really the only odd man out
205                fBackend = kANGLE_BackEndType;
206                break;
207#endif // SK_ANGLE
208#if SK_COMMAND_BUFFER
209            case kCommandBufferES2_DeviceType:
210                // Command buffer is really the only other odd man out :D
211                fBackend = kCommandBufferES2_BackEndType;
212                break;
213#endif // SK_COMMAND_BUFFER
214            default:
215                SkASSERT(false);
216                break;
217        }
218        AttachmentInfo attachmentInfo;
219        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
220        if (!result) {
221            SkDebugf("Failed to initialize GL");
222            return;
223        }
224        fMSAASampleCount = msaaSampleCount;
225
226        SkASSERT(nullptr == fCurIntf);
227        SkAutoTUnref<const GrGLInterface> glInterface;
228        switch (win->getDeviceType()) {
229            case kRaster_DeviceType:    // fallthrough
230            case kGPU_DeviceType:
231                // all these guys use the native interface
232                glInterface.reset(GrGLCreateNativeInterface());
233                break;
234#if SK_ANGLE
235            case kANGLE_DeviceType:
236                glInterface.reset(GrGLCreateANGLEInterface());
237                break;
238#endif // SK_ANGLE
239#if SK_COMMAND_BUFFER
240            case kCommandBufferES2_DeviceType:
241                glInterface.reset(GrGLCreateCommandBufferInterface());
242                break;
243#endif // SK_COMMAND_BUFFER
244            default:
245                SkASSERT(false);
246                break;
247        }
248
249        // Currently SampleApp does not use NVPR. TODO: Provide an NVPR device type that is skipped
250        // when the driver doesn't support NVPR.
251        fCurIntf = GrGLInterfaceRemoveNVPR(glInterface.get());
252
253        SkASSERT(nullptr == fCurContext);
254        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
255
256        if (nullptr == fCurContext || nullptr == fCurIntf) {
257            // We need some context and interface to see results
258            SkSafeUnref(fCurContext);
259            SkSafeUnref(fCurIntf);
260            fCurContext = nullptr;
261            fCurIntf = nullptr;
262            SkDebugf("Failed to setup 3D");
263
264            win->detach();
265        }
266#endif // SK_SUPPORT_GPU
267        // call windowSizeChanged to create the render target
268        this->windowSizeChanged(win);
269    }
270
271    void tearDownBackend(SampleWindow *win) override {
272#if SK_SUPPORT_GPU
273        if (fCurContext) {
274            // in case we have outstanding refs to this guy (lua?)
275            fCurContext->abandonContext();
276            fCurContext->unref();
277            fCurContext = nullptr;
278        }
279
280        SkSafeUnref(fCurIntf);
281        fCurIntf = nullptr;
282
283        SkSafeUnref(fCurRenderTarget);
284        fCurRenderTarget = nullptr;
285#endif
286        win->detach();
287        fBackend = kNone_BackEndType;
288    }
289
290    SkSurface* createSurface(SampleWindow::DeviceType dType, SampleWindow* win) override {
291#if SK_SUPPORT_GPU
292        if (IsGpuDeviceType(dType) && fCurContext) {
293            SkSurfaceProps props(win->getSurfaceProps());
294            return SkSurface::NewRenderTargetDirect(fCurRenderTarget, &props);
295        }
296#endif
297        return nullptr;
298    }
299
300    void publishCanvas(SampleWindow::DeviceType dType,
301                       SkCanvas* canvas, SampleWindow* win) override {
302#if SK_SUPPORT_GPU
303        if (fCurContext) {
304            // in case we have queued drawing calls
305            fCurContext->flush();
306
307            if (!IsGpuDeviceType(dType)) {
308                // need to send the raster bits to the (gpu) window
309                const SkBitmap& bm = win->getBitmap();
310                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
311                                             SkImageInfo2GrPixelConfig(bm.colorType(),
312                                                                       bm.alphaType(),
313                                                                       bm.profileType()),
314                                             bm.getPixels(),
315                                             bm.rowBytes(),
316                                             GrContext::kFlushWrites_PixelOp);
317            }
318        }
319#endif
320
321        win->present();
322    }
323
324    void windowSizeChanged(SampleWindow* win) override {
325#if SK_SUPPORT_GPU
326        if (fCurContext) {
327            AttachmentInfo attachmentInfo;
328            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
329            SkSafeUnref(fCurRenderTarget);
330            fCurRenderTarget = win->renderTarget(attachmentInfo, fCurIntf, fCurContext);
331        }
332#endif
333    }
334
335    GrContext* getGrContext() override {
336#if SK_SUPPORT_GPU
337        return fCurContext;
338#else
339        return nullptr;
340#endif
341    }
342
343    GrRenderTarget* getGrRenderTarget() override {
344#if SK_SUPPORT_GPU
345        return fCurRenderTarget;
346#else
347        return nullptr;
348#endif
349    }
350
351private:
352
353#if SK_SUPPORT_GPU
354    GrContext*              fCurContext;
355    const GrGLInterface*    fCurIntf;
356    GrRenderTarget*         fCurRenderTarget;
357    int fMSAASampleCount;
358#endif
359
360    SkOSWindow::SkBackEndTypes fBackend;
361
362    typedef SampleWindow::DeviceManager INHERITED;
363};
364
365///////////////
366static const char view_inval_msg[] = "view-inval-msg";
367
368void SampleWindow::postInvalDelay() {
369    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
370}
371
372static bool isInvalEvent(const SkEvent& evt) {
373    return evt.isType(view_inval_msg);
374}
375//////////////////
376
377SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
378    : fCreateFunc(func) {
379}
380
381SkView* SkFuncViewFactory::operator() () const {
382    return (*fCreateFunc)();
383}
384
385#include "GMSampleView.h"
386
387SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
388    : fFunc(func) {
389}
390
391SkView* SkGMSampleViewFactory::operator() () const {
392    skiagm::GM* gm = fFunc(nullptr);
393    gm->setMode(skiagm::GM::kSample_Mode);
394    return new GMSampleView(gm);
395}
396
397SkViewRegister* SkViewRegister::gHead;
398SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
399    fFact->ref();
400    fChain = gHead;
401    gHead = this;
402}
403
404SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
405    fFact = new SkFuncViewFactory(func);
406    fChain = gHead;
407    gHead = this;
408}
409
410SkViewRegister::SkViewRegister(GMFactoryFunc func) {
411    fFact = new SkGMSampleViewFactory(func);
412    fChain = gHead;
413    gHead = this;
414}
415
416class AutoUnrefArray {
417public:
418    AutoUnrefArray() {}
419    ~AutoUnrefArray() {
420        int count = fObjs.count();
421        for (int i = 0; i < count; ++i) {
422            fObjs[i]->unref();
423        }
424    }
425    SkRefCnt*& push_back() { return *fObjs.append(); }
426
427private:
428    SkTDArray<SkRefCnt*> fObjs;
429};
430
431// registers GMs as Samples
432// This can't be performed during static initialization because it could be
433// run before GMRegistry has been fully built.
434static void SkGMRegistyToSampleRegistry() {
435    static bool gOnce;
436    static AutoUnrefArray fRegisters;
437
438    if (!gOnce) {
439        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
440        while (gmreg) {
441            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
442            gmreg = gmreg->next();
443        }
444        gOnce = true;
445    }
446}
447
448//////////////////////////////////////////////////////////////////////////////
449
450enum FlipAxisEnum {
451    kFlipAxis_X = (1 << 0),
452    kFlipAxis_Y = (1 << 1)
453};
454
455#include "SkDrawFilter.h"
456
457struct HintingState {
458    SkPaint::Hinting hinting;
459    const char* name;
460    const char* label;
461};
462static HintingState gHintingStates[] = {
463    {SkPaint::kNo_Hinting, "Mixed", nullptr },
464    {SkPaint::kNo_Hinting, "None", "H0 " },
465    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
466    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
467    {SkPaint::kFull_Hinting, "Full", "Hf " },
468};
469
470struct FilterQualityState {
471    SkFilterQuality fQuality;
472    const char*     fName;
473    const char*     fLabel;
474};
475static FilterQualityState gFilterQualityStates[] = {
476    { kNone_SkFilterQuality,   "Mixed",    nullptr    },
477    { kNone_SkFilterQuality,   "None",     "F0 "   },
478    { kLow_SkFilterQuality,    "Low",      "F1 "   },
479    { kMedium_SkFilterQuality, "Medium",   "F2 "   },
480    { kHigh_SkFilterQuality,   "High",     "F3 "   },
481};
482
483class FlagsFilterCanvas : public SkPaintFilterCanvas {
484public:
485    FlagsFilterCanvas(SkCanvas* canvas, SkOSMenu::TriState lcd, SkOSMenu::TriState aa,
486                      SkOSMenu::TriState subpixel, int hinting, int filterQuality)
487        : INHERITED(canvas)
488        , fLCDState(lcd)
489        , fAAState(aa)
490        , fSubpixelState(subpixel)
491        , fHintingState(hinting)
492        , fFilterQualityIndex(filterQuality) {
493        SkASSERT((unsigned)filterQuality < SK_ARRAY_COUNT(gFilterQualityStates));
494    }
495
496protected:
497    bool onFilter(SkTCopyOnFirstWrite<SkPaint>* paint, Type t) const override {
498        if (!*paint) {
499            return true;
500        }
501
502        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
503            paint->writable()->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
504        }
505        if (SkOSMenu::kMixedState != fAAState) {
506            paint->writable()->setAntiAlias(SkOSMenu::kOnState == fAAState);
507        }
508        if (0 != fFilterQualityIndex) {
509            paint->writable()->setFilterQuality(gFilterQualityStates[fFilterQualityIndex].fQuality);
510        }
511        if (SkOSMenu::kMixedState != fSubpixelState) {
512            paint->writable()->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
513        }
514        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
515            paint->writable()->setHinting(gHintingStates[fHintingState].hinting);
516        }
517        return true;
518    }
519
520private:
521    SkOSMenu::TriState  fLCDState;
522    SkOSMenu::TriState  fAAState;
523    SkOSMenu::TriState  fSubpixelState;
524    int fHintingState;
525    int fFilterQualityIndex;
526
527    typedef SkPaintFilterCanvas INHERITED;
528};
529
530//////////////////////////////////////////////////////////////////////////////
531
532#define MAX_ZOOM_LEVEL  8
533#define MIN_ZOOM_LEVEL  -8
534
535static const char gCharEvtName[] = "SampleCode_Char_Event";
536static const char gKeyEvtName[] = "SampleCode_Key_Event";
537static const char gTitleEvtName[] = "SampleCode_Title_Event";
538static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
539static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
540static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
541
542bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
543    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
544        if (outUni) {
545            *outUni = evt.getFast32();
546        }
547        return true;
548    }
549    return false;
550}
551
552bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
553    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
554        if (outKey) {
555            *outKey = (SkKey)evt.getFast32();
556        }
557        return true;
558    }
559    return false;
560}
561
562bool SampleCode::TitleQ(const SkEvent& evt) {
563    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
564}
565
566void SampleCode::TitleR(SkEvent* evt, const char title[]) {
567    SkASSERT(evt && TitleQ(*evt));
568    evt->setString(gTitleEvtName, title);
569}
570
571bool SampleCode::RequestTitle(SkView* view, SkString* title) {
572    SkEvent evt(gTitleEvtName);
573    if (view->doQuery(&evt)) {
574        title->set(evt.findString(gTitleEvtName));
575        return true;
576    }
577    return false;
578}
579
580bool SampleCode::PrefSizeQ(const SkEvent& evt) {
581    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
582}
583
584void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
585    SkASSERT(evt && PrefSizeQ(*evt));
586    SkScalar size[2];
587    size[0] = width;
588    size[1] = height;
589    evt->setScalars(gPrefSizeEvtName, 2, size);
590}
591
592bool SampleCode::FastTextQ(const SkEvent& evt) {
593    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
594}
595
596///////////////////////////////////////////////////////////////////////////////
597
598enum TilingMode {
599    kNo_Tiling,
600    kAbs_128x128_Tiling,
601    kAbs_256x256_Tiling,
602    kRel_4x4_Tiling,
603    kRel_1x16_Tiling,
604    kRel_16x1_Tiling,
605
606    kLast_TilingMode_Enum
607};
608
609struct TilingInfo {
610    const char* label;
611    SkScalar    w, h;
612};
613
614static const struct TilingInfo gTilingInfo[] = {
615    { "No tiling", SK_Scalar1        , SK_Scalar1         }, // kNo_Tiling
616    { "128x128"  , SkIntToScalar(128), SkIntToScalar(128) }, // kAbs_128x128_Tiling
617    { "256x256"  , SkIntToScalar(256), SkIntToScalar(256) }, // kAbs_256x256_Tiling
618    { "1/4x1/4"  , SK_Scalar1 / 4    , SK_Scalar1 / 4     }, // kRel_4x4_Tiling
619    { "1/1x1/16" , SK_Scalar1        , SK_Scalar1 / 16    }, // kRel_1x16_Tiling
620    { "1/16x1/1" , SK_Scalar1 / 16   , SK_Scalar1         }, // kRel_16x1_Tiling
621};
622static_assert((SK_ARRAY_COUNT(gTilingInfo) == kLast_TilingMode_Enum),
623              "Incomplete_tiling_labels");
624
625SkSize SampleWindow::tileSize() const {
626    SkASSERT((TilingMode)fTilingMode < kLast_TilingMode_Enum);
627    const struct TilingInfo* info = gTilingInfo + fTilingMode;
628    return SkSize::Make(info->w > SK_Scalar1 ? info->w : this->width() * info->w,
629                        info->h > SK_Scalar1 ? info->h : this->height() * info->h);
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
650bool SampleWindow::sendAnimatePulse() {
651    SkView* view = curr_view(this);
652    if (SampleView::IsSampleView(view)) {
653        return ((SampleView*)view)->animate(gAnimTimer);
654    }
655    return false;
656}
657
658void SampleWindow::setZoomCenter(float x, float y) {
659    fZoomCenterX = x;
660    fZoomCenterY = y;
661}
662
663bool SampleWindow::zoomIn() {
664    // Arbitrarily decided
665    if (fFatBitsScale == kMaxFatBitsScale) return false;
666    fFatBitsScale++;
667    this->inval(nullptr);
668    return true;
669}
670
671bool SampleWindow::zoomOut() {
672    if (fFatBitsScale == 1) return false;
673    fFatBitsScale--;
674    this->inval(nullptr);
675    return true;
676}
677
678void SampleWindow::updatePointer(int x, int y) {
679    fMouseX = x;
680    fMouseY = y;
681    if (fShowZoomer) {
682        this->inval(nullptr);
683    }
684}
685
686static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
687    static const SampleWindow::DeviceType gCT[] = {
688        SampleWindow::kRaster_DeviceType
689#if SK_SUPPORT_GPU
690        , SampleWindow::kGPU_DeviceType
691#if SK_ANGLE
692        , SampleWindow::kANGLE_DeviceType
693#endif // SK_ANGLE
694#if SK_COMMAND_BUFFER
695        , SampleWindow::kCommandBufferES2_DeviceType
696#endif // SK_COMMAND_BUFFER
697#endif // SK_SUPPORT_GPU
698    };
699    static_assert(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, "array_size_mismatch");
700    return gCT[ct];
701}
702
703static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
704    SkView* view = (*sampleFactory)();
705    SkString title;
706    SampleCode::RequestTitle(view, &title);
707    view->unref();
708    return title;
709}
710
711static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
712    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
713}
714
715static int find_by_title(const SkViewFactory* const* factories, int count, const char title[]) {
716    for (int i = 0; i < count; i++) {
717        if (getSampleTitle(factories[i]).equals(title)) {
718            return i;
719        }
720    }
721    return -1;
722}
723
724static void restrict_samples(SkTDArray<const SkViewFactory*>& factories, const SkString titles[],
725                             int count) {
726    int newCount = 0;
727    for (int i = 0; i < count; ++i) {
728        int index = find_by_title(factories.begin(), factories.count(), titles[i].c_str());
729        if (index >= 0) {
730            SkTSwap(factories.begin()[newCount], factories.begin()[index]);
731            newCount += 1;
732        }
733    }
734    if (newCount) {
735        factories.setCount(newCount);
736    }
737}
738
739DEFINE_string(slide, "", "Start on this sample.");
740DEFINE_int32(msaa, 0, "Request multisampling with this count.");
741DEFINE_string(pictureDir, "", "Read pictures from here.");
742DEFINE_string(picture, "", "Path to single picture.");
743DEFINE_string(sequence, "", "Path to file containing the desired samples/gms to show.");
744DEFINE_bool(sort, false, "Sort samples by title.");
745DEFINE_bool(list, false, "List samples?");
746DEFINE_bool(gpu, false, "Start up with gpu?");
747DEFINE_bool(redraw, false, "Force continuous redrawing, for profiling or debugging tools.");
748DEFINE_string(key, "", "");  // dummy to enable gm tests that have platform-specific names
749#ifdef SAMPLE_PDF_FILE_VIEWER
750DEFINE_string(pdfPath, "", "Path to direcotry of pdf files.");
751#endif
752
753#include "SkTaskGroup.h"
754
755SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
756    : INHERITED(hwnd)
757    , fDevManager(nullptr) {
758
759    SkCommandLineFlags::Parse(argc, argv);
760
761    fCurrIndex = -1;
762
763    if (!FLAGS_pictureDir.isEmpty()) {
764        SkOSFile::Iter iter(FLAGS_pictureDir[0], "skp");
765        SkString filename;
766        while (iter.next(&filename)) {
767            *fSamples.append() = new PictFileFactory(
768                SkOSPath::Join(FLAGS_pictureDir[0], filename.c_str()));
769        }
770    }
771    if (!FLAGS_picture.isEmpty()) {
772        SkString path(FLAGS_picture[0]);
773        fCurrIndex = fSamples.count();
774        *fSamples.append() = new PictFileFactory(path);
775    }
776#ifdef SAMPLE_PDF_FILE_VIEWER
777    if (!FLAGS_pdfPath.isEmpty()) {
778        SkOSFile::Iter iter(FLAGS_pdfPath[0], "pdf");
779        SkString filename;
780        while (iter.next(&filename)) {
781            *fSamples.append() = new PdfFileViewerFactory(
782                SkOSPath::Join(FLAGS_pictureDir[0], filename.c_str()));
783        }
784    }
785#endif
786    SkGMRegistyToSampleRegistry();
787    {
788        const SkViewRegister* reg = SkViewRegister::Head();
789        while (reg) {
790            *fSamples.append() = reg->factory();
791            reg = reg->next();
792        }
793    }
794
795    if (!FLAGS_sequence.isEmpty()) {
796        // The sequence file just contains a list (separated by CRs) of the samples or GM:gms
797        // you want to restrict to. Only these will appear when you cycle through.
798        // If none are found, or the file is empty, then it will be ignored, and all samples
799        // will be available.
800        SkFILEStream stream(FLAGS_sequence[0]);
801        if (stream.isValid()) {
802            size_t len = stream.getLength();
803            SkAutoTMalloc<char> storage(len + 1);
804            char* buffer = storage.get();
805            stream.read(buffer, len);
806            buffer[len] = 0;
807
808            SkTArray<SkString> titles;
809            SkStrSplit(buffer, "\n\r", &titles);
810            restrict_samples(fSamples, titles.begin(), titles.count());
811        }
812    }
813
814    if (FLAGS_sort) {
815        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
816        // skp -> pdf -> png fails.
817        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : nullptr, compareSampleTitle);
818    }
819
820    if (!FLAGS_slide.isEmpty()) {
821        fCurrIndex = findByTitle(FLAGS_slide[0]);
822        if (fCurrIndex < 0) {
823            fprintf(stderr, "Unknown sample \"%s\"\n", FLAGS_slide[0]);
824            listTitles();
825        }
826    }
827
828    fMSAASampleCount = FLAGS_msaa;
829
830    if (FLAGS_list) {
831        listTitles();
832    }
833
834    if (fCurrIndex < 0) {
835        SkString title;
836        if (readTitleFromPrefs(&title)) {
837            fCurrIndex = findByTitle(title.c_str());
838        }
839    }
840
841    if (fCurrIndex < 0) {
842        fCurrIndex = 0;
843    }
844
845    static SkTaskGroup::Enabler enabled(-1);
846    gSampleWindow = this;
847
848    fDeviceType = kRaster_DeviceType;
849#if SK_SUPPORT_GPU
850    if (FLAGS_gpu) {
851        fDeviceType = kGPU_DeviceType;
852    }
853#endif
854
855#if DEFAULT_TO_GPU
856    fDeviceType = kGPU_DeviceType;
857#endif
858#if SK_ANGLE && DEFAULT_TO_ANGLE
859    fDeviceType = kANGLE_DeviceType;
860#endif
861#if SK_COMMAND_BUFFER && DEFAULT_TO_COMMAND_BUFFER
862    fDeviceType = kCommandBufferES2_DeviceType;
863#endif
864
865    fUseClip = false;
866    fUsePicture = false;
867    fAnimating = false;
868    fRotate = false;
869    fPerspAnim = false;
870    fRequestGrabImage = false;
871    fTilingMode = kNo_Tiling;
872    fMeasureFPS = false;
873    fLCDState = SkOSMenu::kMixedState;
874    fAAState = SkOSMenu::kMixedState;
875    fSubpixelState = SkOSMenu::kMixedState;
876    fHintingState = 0;
877    fFilterQualityIndex = 0;
878    fFlipAxis = 0;
879    fScrollTestX = fScrollTestY = 0;
880
881    fMouseX = fMouseY = 0;
882    fFatBitsScale = 8;
883    fTypeface = SkTypeface::CreateFromTypeface(nullptr, SkTypeface::kBold);
884    fShowZoomer = false;
885
886    fZoomLevel = 0;
887    fZoomScale = SK_Scalar1;
888
889    fMagnify = false;
890
891    fSaveToPdf = false;
892    fSaveToSKP = false;
893
894    int sinkID = this->getSinkID();
895    fAppMenu = new SkOSMenu;
896    fAppMenu->setTitle("Global Settings");
897    int itemID;
898
899    itemID = fAppMenu->appendList("ColorType", "ColorType", sinkID, 0,
900                                  gConfig[0].fName, gConfig[1].fName, gConfig[2].fName, nullptr);
901    fAppMenu->assignKeyEquivalentToItem(itemID, 'C');
902
903    itemID = fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
904                                  "Raster",
905                                  "OpenGL",
906#if SK_ANGLE
907                                  "ANGLE",
908#endif
909#if SK_COMMAND_BUFFER
910                                  "Command Buffer",
911#endif
912                                  nullptr);
913    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
914    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
915    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
916    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
917    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
918    itemID = fAppMenu->appendList("FilterQuality", "FilterQuality", sinkID, fFilterQualityIndex,
919                                  gFilterQualityStates[0].fName,
920                                  gFilterQualityStates[1].fName,
921                                  gFilterQualityStates[2].fName,
922                                  gFilterQualityStates[3].fName,
923                                  gFilterQualityStates[4].fName,
924                                  nullptr);
925    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
926    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
927    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
928    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
929                                  gHintingStates[0].name,
930                                  gHintingStates[1].name,
931                                  gHintingStates[2].name,
932                                  gHintingStates[3].name,
933                                  gHintingStates[4].name,
934                                  nullptr);
935    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
936
937    itemID =fAppMenu->appendList("Tiling", "Tiling", sinkID, fTilingMode,
938                                 gTilingInfo[kNo_Tiling].label,
939                                 gTilingInfo[kAbs_128x128_Tiling].label,
940                                 gTilingInfo[kAbs_256x256_Tiling].label,
941                                 gTilingInfo[kRel_4x4_Tiling].label,
942                                 gTilingInfo[kRel_1x16_Tiling].label,
943                                 gTilingInfo[kRel_16x1_Tiling].label,
944                                 nullptr);
945    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
946
947    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
948    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
949    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
950    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
951    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
952    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
953    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
954    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
955    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
956    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
957    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
958    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
959
960    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
961    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
962
963    this->addMenu(fAppMenu);
964    fSlideMenu = new SkOSMenu;
965    this->addMenu(fSlideMenu);
966
967    this->setVisibleP(true);
968    this->setClipToBounds(false);
969
970    this->loadView((*fSamples[fCurrIndex])());
971
972    if (nullptr == devManager) {
973        fDevManager = new DefaultDeviceManager();
974    } else {
975        devManager->ref();
976        fDevManager = devManager;
977    }
978    fDevManager->setUpBackend(this, fMSAASampleCount);
979
980    // If another constructor set our dimensions, ensure that our
981    // onSizeChange gets called.
982    if (this->height() && this->width()) {
983        this->onSizeChange();
984    }
985
986    // can't call this synchronously, since it may require a subclass to
987    // to implement, or the caller may need us to have returned from the
988    // constructor first. Hence we post an event to ourselves.
989//    this->updateTitle();
990    post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
991
992    gAnimTimer.run();
993}
994
995SampleWindow::~SampleWindow() {
996    SkSafeUnref(fTypeface);
997    SkSafeUnref(fDevManager);
998}
999
1000
1001int SampleWindow::findByTitle(const char title[]) {
1002    int i, count = fSamples.count();
1003    for (i = 0; i < count; i++) {
1004        if (getSampleTitle(i).equals(title)) {
1005            return i;
1006        }
1007    }
1008    return -1;
1009}
1010
1011void SampleWindow::listTitles() {
1012    int count = fSamples.count();
1013    SkDebugf("All Slides:\n");
1014    for (int i = 0; i < count; i++) {
1015        SkDebugf("    %s\n", getSampleTitle(i).c_str());
1016    }
1017}
1018
1019static SkBitmap capture_bitmap(SkCanvas* canvas) {
1020    SkBitmap bm;
1021    if (bm.tryAllocPixels(canvas->imageInfo())) {
1022        canvas->readPixels(&bm, 0, 0);
1023    }
1024    return bm;
1025}
1026
1027static void drawText(SkCanvas* canvas, SkString str, SkScalar left, SkScalar top, SkPaint& paint) {
1028    SkColor desiredColor = paint.getColor();
1029    paint.setColor(SK_ColorWHITE);
1030    const char* c_str = str.c_str();
1031    size_t size = str.size();
1032    SkRect bounds;
1033    paint.measureText(c_str, size, &bounds);
1034    bounds.offset(left, top);
1035    SkScalar inset = SkIntToScalar(-2);
1036    bounds.inset(inset, inset);
1037    canvas->drawRect(bounds, paint);
1038    if (desiredColor != SK_ColorBLACK) {
1039        paint.setColor(SK_ColorBLACK);
1040        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1041    }
1042    paint.setColor(desiredColor);
1043    canvas->drawText(c_str, size, left, top, paint);
1044}
1045
1046#define XCLIP_N  8
1047#define YCLIP_N  8
1048
1049void SampleWindow::draw(SkCanvas* canvas) {
1050    gAnimTimer.updateTime();
1051
1052    if (fGesture.isActive()) {
1053        this->updateMatrix();
1054    }
1055
1056    if (fMeasureFPS) {
1057        fMeasureFPS_Time = 0;
1058    }
1059
1060    SkSize tile = this->tileSize();
1061
1062    if (kNo_Tiling == fTilingMode) {
1063        this->INHERITED::draw(canvas); // no looping or surfaces needed
1064    } else {
1065        const int w = SkScalarRoundToInt(tile.width());
1066        const int h = SkScalarRoundToInt(tile.height());
1067        SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
1068        SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
1069        SkCanvas* tileCanvas = surface->getCanvas();
1070
1071        for (SkScalar y = 0; y < height(); y += tile.height()) {
1072            for (SkScalar x = 0; x < width(); x += tile.width()) {
1073                SkAutoCanvasRestore acr(tileCanvas, true);
1074                tileCanvas->translate(-x, -y);
1075                tileCanvas->clear(0);
1076                this->INHERITED::draw(tileCanvas);
1077                surface->draw(canvas, x, y, nullptr);
1078            }
1079        }
1080
1081        // for drawing the borders between tiles
1082        SkPaint paint;
1083        paint.setColor(0x60FF00FF);
1084        paint.setStyle(SkPaint::kStroke_Style);
1085
1086        for (SkScalar y = 0; y < height(); y += tile.height()) {
1087            for (SkScalar x = 0; x < width(); x += tile.width()) {
1088                canvas->drawRect(SkRect::MakeXYWH(x, y, tile.width(), tile.height()), paint);
1089            }
1090        }
1091    }
1092
1093    if (fShowZoomer && !fSaveToPdf) {
1094        showZoomer(canvas);
1095    }
1096    if (fMagnify && !fSaveToPdf) {
1097        magnify(canvas);
1098    }
1099
1100    if (fMeasureFPS && fMeasureFPS_Time) {
1101        this->updateTitle();
1102        this->postInvalDelay();
1103    }
1104
1105    if (this->sendAnimatePulse() || FLAGS_redraw) {
1106        this->inval(nullptr);
1107    }
1108
1109    // do this last
1110    fDevManager->publishCanvas(fDeviceType, canvas, this);
1111}
1112
1113static float clipW = 200;
1114static float clipH = 200;
1115void SampleWindow::magnify(SkCanvas* canvas) {
1116    SkRect r;
1117    int count = canvas->save();
1118
1119    SkMatrix m = canvas->getTotalMatrix();
1120    if (!m.invert(&m)) {
1121        return;
1122    }
1123    SkPoint offset, center;
1124    SkScalar mouseX = fMouseX * SK_Scalar1;
1125    SkScalar mouseY = fMouseY * SK_Scalar1;
1126    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1127    m.mapXY(mouseX, mouseY, &center);
1128
1129    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1130    r.offset(offset.fX, offset.fY);
1131
1132    SkPaint paint;
1133    paint.setColor(0xFF66AAEE);
1134    paint.setStyle(SkPaint::kStroke_Style);
1135    paint.setStrokeWidth(10.f * m.getScaleX());
1136    //lense offset
1137    //canvas->translate(0, -250);
1138    canvas->drawRect(r, paint);
1139    canvas->clipRect(r);
1140
1141    m = canvas->getTotalMatrix();
1142    m.setTranslate(-center.fX, -center.fY);
1143    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1144    m.postTranslate(center.fX, center.fY);
1145    canvas->concat(m);
1146
1147    this->INHERITED::draw(canvas);
1148
1149    canvas->restoreToCount(count);
1150}
1151
1152static SkPaint& set_color_ref(SkPaint& paint, SkColor c) {
1153    paint.setColor(c);
1154    return paint;
1155}
1156
1157static void show_lcd_box(SkCanvas* canvas, SkScalar x, SkScalar y, SkColor c,
1158                         SkScalar sx, SkScalar sy) {
1159    const SkScalar w = (1 - 1/sx) / 3;
1160    SkPaint paint;
1161    SkRect r = SkRect::MakeXYWH(x, y, w, 1 - 1/sy);
1162    canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(SkColorGetR(c), 0, 0)));
1163    r.offset(w, 0);
1164    canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(0, SkColorGetG(c), 0)));
1165    r.offset(w, 0);
1166    canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(0, 0, SkColorGetB(c))));
1167}
1168
1169static void show_lcd_circle(SkCanvas* canvas, SkScalar x, SkScalar y, SkColor c,
1170                            SkScalar, SkScalar) {
1171    const SkRect r = SkRect::MakeXYWH(x, y, 1, 1);
1172    const SkScalar cx = x + 0.5f;
1173    const SkScalar cy = y + 0.5f;
1174
1175    SkPaint paint;
1176    paint.setAntiAlias(true);
1177
1178    SkPath path;
1179    path.addArc(r, 0, 120); path.lineTo(cx, cy);
1180    canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(SkColorGetR(c), 0, 0)));
1181
1182    path.reset(); path.addArc(r, 120, 120); path.lineTo(cx, cy);
1183    canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(0, SkColorGetG(c), 0)));
1184
1185    path.reset(); path.addArc(r, 240, 120); path.lineTo(cx, cy);
1186    canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(0, 0, SkColorGetB(c))));
1187}
1188
1189typedef void (*ShowLCDProc)(SkCanvas*, SkScalar, SkScalar, SkColor, SkScalar, SkScalar);
1190
1191/*
1192 *  Like drawBitmapRect but we manually draw each pixels in RGB
1193 */
1194static void show_lcd_grid(SkCanvas* canvas, const SkBitmap& bitmap,
1195                          const SkIRect& origSrc, const SkRect& dst, ShowLCDProc proc) {
1196    SkIRect src;
1197    if (!src.intersect(origSrc, bitmap.bounds())) {
1198        return;
1199    }
1200    const SkScalar sx = dst.width() / src.width();
1201    const SkScalar sy = dst.height() / src.height();
1202
1203    SkAutoCanvasRestore acr(canvas, true);
1204    canvas->translate(dst.left(), dst.top());
1205    canvas->scale(sx, sy);
1206
1207    for (int y = 0; y < src.height(); ++y) {
1208        for (int x = 0; x < src.width(); ++x) {
1209            proc(canvas, SkIntToScalar(x), SkIntToScalar(y),
1210                 bitmap.getColor(src.left() + x, src.top() + y), sx, sy);
1211        }
1212    }
1213}
1214
1215void SampleWindow::showZoomer(SkCanvas* canvas) {
1216    int count = canvas->save();
1217    canvas->resetMatrix();
1218    // Ensure the mouse position is on screen.
1219    int width = SkScalarRoundToInt(this->width());
1220    int height = SkScalarRoundToInt(this->height());
1221    if (fMouseX >= width) fMouseX = width - 1;
1222    else if (fMouseX < 0) fMouseX = 0;
1223    if (fMouseY >= height) fMouseY = height - 1;
1224    else if (fMouseY < 0) fMouseY = 0;
1225
1226    SkBitmap bitmap = capture_bitmap(canvas);
1227    bitmap.lockPixels();
1228
1229    // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1230    int zoomedWidth = (width >> 1) | 1;
1231    int zoomedHeight = (height >> 1) | 1;
1232    SkIRect src;
1233    src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1234    src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1235    SkRect dest;
1236    dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1237    dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1238    SkPaint paint;
1239    // Clear the background behind our zoomed in view
1240    paint.setColor(SK_ColorWHITE);
1241    canvas->drawRect(dest, paint);
1242    switch (fFatBitsScale) {
1243        case kMaxFatBitsScale:
1244            show_lcd_grid(canvas, bitmap, src, dest, show_lcd_box);
1245            break;
1246        case kMaxFatBitsScale - 1:
1247            show_lcd_grid(canvas, bitmap, src, dest, show_lcd_circle);
1248            break;
1249        default:
1250            canvas->drawBitmapRect(bitmap, src, dest, nullptr);
1251            break;
1252    }
1253
1254    paint.setColor(SK_ColorBLACK);
1255    paint.setStyle(SkPaint::kStroke_Style);
1256    // Draw a border around the pixel in the middle
1257    SkRect originalPixel;
1258    originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1259    SkMatrix matrix;
1260    SkRect scalarSrc;
1261    scalarSrc.set(src);
1262    SkColor color = bitmap.getColor(fMouseX, fMouseY);
1263    if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1264        SkRect pixel;
1265        matrix.mapRect(&pixel, originalPixel);
1266        // TODO Perhaps measure the values and make the outline white if it's "dark"
1267        if (color == SK_ColorBLACK) {
1268            paint.setColor(SK_ColorWHITE);
1269        }
1270        canvas->drawRect(pixel, paint);
1271    }
1272    paint.setColor(SK_ColorBLACK);
1273    // Draw a border around the destination rectangle
1274    canvas->drawRect(dest, paint);
1275    paint.setStyle(SkPaint::kStrokeAndFill_Style);
1276    // Identify the pixel and its color on screen
1277    paint.setTypeface(fTypeface);
1278    paint.setAntiAlias(true);
1279    SkScalar lineHeight = paint.getFontMetrics(nullptr);
1280    SkString string;
1281    string.appendf("(%i, %i)", fMouseX, fMouseY);
1282    SkScalar left = dest.fLeft + SkIntToScalar(3);
1283    SkScalar i = SK_Scalar1;
1284    drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1285    // Alpha
1286    i += SK_Scalar1;
1287    string.reset();
1288    string.appendf("A: %X", SkColorGetA(color));
1289    drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1290    // Red
1291    i += SK_Scalar1;
1292    string.reset();
1293    string.appendf("R: %X", SkColorGetR(color));
1294    paint.setColor(SK_ColorRED);
1295    drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1296    // Green
1297    i += SK_Scalar1;
1298    string.reset();
1299    string.appendf("G: %X", SkColorGetG(color));
1300    paint.setColor(SK_ColorGREEN);
1301    drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1302    // Blue
1303    i += SK_Scalar1;
1304    string.reset();
1305    string.appendf("B: %X", SkColorGetB(color));
1306    paint.setColor(SK_ColorBLUE);
1307    drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1308    canvas->restoreToCount(count);
1309}
1310
1311void SampleWindow::onDraw(SkCanvas* canvas) {
1312}
1313
1314#include "SkColorPriv.h"
1315
1316void SampleWindow::saveToPdf()
1317{
1318#if SK_SUPPORT_PDF
1319    fSaveToPdf = true;
1320    this->inval(nullptr);
1321#endif  // SK_SUPPORT_PDF
1322}
1323
1324SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1325    if (fSaveToPdf) {
1326        SkString name;
1327        if (!this->getRawTitle(&name)) {
1328            name.set("unknown_sample");
1329        }
1330        name.append(".pdf");
1331#ifdef SK_BUILD_FOR_ANDROID
1332        name.prepend("/sdcard/");
1333#endif
1334        fPDFDocument.reset(SkDocument::CreatePDF(name.c_str()));
1335        canvas = fPDFDocument->beginPage(this->width(), this->height());
1336    } else if (fSaveToSKP) {
1337        canvas = fRecorder.beginRecording(9999, 9999, nullptr, 0);
1338    } else if (fUsePicture) {
1339        canvas = fRecorder.beginRecording(9999, 9999, nullptr, 0);
1340    } else {
1341        canvas = this->INHERITED::beforeChildren(canvas);
1342    }
1343
1344    if (fUseClip) {
1345        canvas->drawColor(0xFFFF88FF);
1346        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1347    }
1348
1349    // Install a flags filter proxy canvas if needed
1350    if (fLCDState != SkOSMenu::kMixedState ||
1351        fAAState != SkOSMenu::kMixedState ||
1352        fSubpixelState != SkOSMenu::kMixedState ||
1353        fHintingState > 0 ||
1354        fFilterQualityIndex > 0) {
1355        canvas = new FlagsFilterCanvas(canvas, fLCDState, fAAState, fSubpixelState, fHintingState,
1356                                       fFilterQualityIndex);
1357        fFlagsFilterCanvas.reset(canvas);
1358    }
1359
1360    return canvas;
1361}
1362#include "SkMultiPictureDraw.h"
1363void SampleWindow::afterChildren(SkCanvas* orig) {
1364    fFlagsFilterCanvas.reset(nullptr);
1365
1366    if (fSaveToPdf) {
1367        fSaveToPdf = false;
1368        fPDFDocument->endPage();
1369        fPDFDocument.reset(nullptr);
1370        // We took over the draw calls in order to create the PDF, so we need
1371        // to redraw.
1372        this->inval(nullptr);
1373        return;
1374    }
1375
1376    if (fRequestGrabImage) {
1377        fRequestGrabImage = false;
1378
1379        SkBitmap bmp = capture_bitmap(orig);
1380        if (!bmp.isNull()) {
1381            static int gSampleGrabCounter;
1382            SkString name;
1383            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1384            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1385                                       SkImageEncoder::kPNG_Type, 100);
1386        }
1387        this->inval(nullptr);
1388        return;
1389    }
1390
1391    if (fSaveToSKP) {
1392        SkAutoTUnref<const SkPicture> picture(fRecorder.endRecording());
1393        SkFILEWStream stream("sample_app.skp");
1394        picture->serialize(&stream);
1395        fSaveToSKP = false;
1396        this->inval(nullptr);
1397        return;
1398    }
1399
1400    if (fUsePicture) {
1401        SkAutoTUnref<const SkPicture> picture(fRecorder.endRecording());
1402
1403        // serialize/deserialize?
1404        if (false) {
1405            SkDynamicMemoryWStream wstream;
1406            picture->serialize(&wstream);
1407
1408            SkAutoTDelete<SkStream> rstream(wstream.detachAsStream());
1409            picture.reset(SkPicture::CreateFromStream(rstream));
1410        }
1411        orig->drawPicture(picture);
1412    }
1413
1414    // Do this after presentGL and other finishing, rather than in afterChild
1415    if (fMeasureFPS) {
1416        orig->flush();
1417        fTimer.end();
1418        fMeasureFPS_Time += fTimer.fWall;
1419    }
1420}
1421
1422void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1423    if (fRotate) {
1424        SkScalar cx = this->width() / 2;
1425        SkScalar cy = this->height() / 2;
1426        canvas->translate(cx, cy);
1427        canvas->rotate(gAnimTimer.scaled(10));
1428        canvas->translate(-cx, -cy);
1429    }
1430
1431    if (fPerspAnim) {
1432        SkScalar secs = gAnimTimer.scaled(1);
1433
1434        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1435        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1436        SkScalar t = SkScalarMod(secs, gAnimPeriod);
1437        if (SkScalarFloorToInt(secs / gAnimPeriod) & 0x1) {
1438            t = gAnimPeriod - t;
1439        }
1440        t = 2 * t - gAnimPeriod;
1441        t *= gAnimMag / gAnimPeriod;
1442        SkMatrix m;
1443        m.reset();
1444#if 1
1445        m.setPerspY(t);
1446#else
1447        m.setPerspY(SK_Scalar1 / 1000);
1448        m.setSkewX(8.0f / 25);
1449        m.dump();
1450#endif
1451        canvas->concat(m);
1452    }
1453
1454    if (fMeasureFPS) {
1455        (void)SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT);
1456        fTimer.start();
1457    } else {
1458        (void)SampleView::SetRepeatDraw(child, 1);
1459    }
1460    if (fPerspAnim || fRotate) {
1461        this->inval(nullptr);
1462    }
1463}
1464
1465void SampleWindow::changeZoomLevel(float delta) {
1466    fZoomLevel += delta;
1467    if (fZoomLevel > 0) {
1468        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1469        fZoomScale = fZoomLevel + SK_Scalar1;
1470    } else if (fZoomLevel < 0) {
1471        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1472        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1473    } else {
1474        fZoomScale = SK_Scalar1;
1475    }
1476    this->updateMatrix();
1477}
1478
1479void SampleWindow::updateMatrix(){
1480    SkMatrix m;
1481    m.reset();
1482    if (fZoomLevel) {
1483        SkPoint center;
1484        //m = this->getLocalMatrix();//.invert(&m);
1485        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1486        SkScalar cx = center.fX;
1487        SkScalar cy = center.fY;
1488
1489        m.setTranslate(-cx, -cy);
1490        m.postScale(fZoomScale, fZoomScale);
1491        m.postTranslate(cx, cy);
1492    }
1493
1494    if (fFlipAxis) {
1495        m.preTranslate(fZoomCenterX, fZoomCenterY);
1496        if (fFlipAxis & kFlipAxis_X) {
1497            m.preScale(-SK_Scalar1, SK_Scalar1);
1498        }
1499        if (fFlipAxis & kFlipAxis_Y) {
1500            m.preScale(SK_Scalar1, -SK_Scalar1);
1501        }
1502        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1503        //canvas->concat(m);
1504    }
1505    // Apply any gesture matrix
1506    m.preConcat(fGesture.localM());
1507    m.preConcat(fGesture.globalM());
1508
1509    this->setLocalMatrix(m);
1510
1511    this->updateTitle();
1512    this->inval(nullptr);
1513}
1514bool SampleWindow::previousSample() {
1515    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1516    this->loadView((*fSamples[fCurrIndex])());
1517    return true;
1518}
1519
1520#include "SkResourceCache.h"
1521#include "SkGlyphCache.h"
1522bool SampleWindow::nextSample() {
1523    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1524    this->loadView((*fSamples[fCurrIndex])());
1525
1526    if (false) {
1527        SkResourceCache::TestDumpMemoryStatistics();
1528        SkGlyphCache::Dump();
1529        SkDebugf("\n");
1530    }
1531
1532    return true;
1533}
1534
1535bool SampleWindow::goToSample(int i) {
1536    fCurrIndex = (i) % fSamples.count();
1537    this->loadView((*fSamples[fCurrIndex])());
1538    return true;
1539}
1540
1541SkString SampleWindow::getSampleTitle(int i) {
1542    return ::getSampleTitle(fSamples[i]);
1543}
1544
1545int SampleWindow::sampleCount() {
1546    return fSamples.count();
1547}
1548
1549void SampleWindow::showOverview() {
1550    this->loadView(create_overview(fSamples.count(), fSamples.begin()));
1551}
1552
1553void SampleWindow::postAnimatingEvent() {
1554    if (fAnimating) {
1555        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1556    }
1557}
1558
1559bool SampleWindow::onEvent(const SkEvent& evt) {
1560    if (evt.isType(gUpdateWindowTitleEvtName)) {
1561        this->updateTitle();
1562        return true;
1563    }
1564    if (evt.isType(ANIMATING_EVENTTYPE)) {
1565        if (fAnimating) {
1566            this->nextSample();
1567            this->postAnimatingEvent();
1568        }
1569        return true;
1570    }
1571    if (evt.isType("set-curr-index")) {
1572        this->goToSample(evt.getFast32());
1573        return true;
1574    }
1575    if (isInvalEvent(evt)) {
1576        this->inval(nullptr);
1577        return true;
1578    }
1579    int selected = -1;
1580    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1581        this->setDeviceType((DeviceType)selected);
1582        return true;
1583    }
1584    if (SkOSMenu::FindListIndex(evt, "ColorType", &selected)) {
1585        this->setDeviceColorType(gConfig[selected].fColorType, gConfig[selected].fProfileType);
1586        return true;
1587    }
1588    if (SkOSMenu::FindSwitchState(evt, "Slide Show", nullptr)) {
1589        this->toggleSlideshow();
1590        return true;
1591    }
1592    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1593        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1594        SkOSMenu::FindListIndex(evt, "FilterQuality", &fFilterQualityIndex) ||
1595        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1596        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1597        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1598        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1599        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify))
1600    {
1601        this->inval(nullptr);
1602        this->updateTitle();
1603        return true;
1604    }
1605    if (SkOSMenu::FindListIndex(evt, "Tiling", &fTilingMode)) {
1606        if (SampleView::IsSampleView(curr_view(this))) {
1607            ((SampleView*)curr_view(this))->onTileSizeChanged(this->tileSize());
1608        }
1609        this->inval(nullptr);
1610        this->updateTitle();
1611        return true;
1612    }
1613    if (SkOSMenu::FindSwitchState(evt, "Flip X", nullptr)) {
1614        fFlipAxis ^= kFlipAxis_X;
1615        this->updateMatrix();
1616        return true;
1617    }
1618    if (SkOSMenu::FindSwitchState(evt, "Flip Y", nullptr)) {
1619        fFlipAxis ^= kFlipAxis_Y;
1620        this->updateMatrix();
1621        return true;
1622    }
1623    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1624        this->saveToPdf();
1625        return true;
1626    }
1627    return this->INHERITED::onEvent(evt);
1628}
1629
1630bool SampleWindow::onQuery(SkEvent* query) {
1631    if (query->isType("get-slide-count")) {
1632        query->setFast32(fSamples.count());
1633        return true;
1634    }
1635    if (query->isType("get-slide-title")) {
1636        SkView* view = (*fSamples[query->getFast32()])();
1637        SkEvent evt(gTitleEvtName);
1638        if (view->doQuery(&evt)) {
1639            query->setString("title", evt.findString(gTitleEvtName));
1640        }
1641        SkSafeUnref(view);
1642        return true;
1643    }
1644    if (query->isType("use-fast-text")) {
1645        SkEvent evt(gFastTextEvtName);
1646        return curr_view(this)->doQuery(&evt);
1647    }
1648    if (query->isType("ignore-window-bitmap")) {
1649        query->setFast32(this->getGrContext() != nullptr);
1650        return true;
1651    }
1652    return this->INHERITED::onQuery(query);
1653}
1654
1655DECLARE_bool(portableFonts);
1656
1657bool SampleWindow::onHandleChar(SkUnichar uni) {
1658    {
1659        SkView* view = curr_view(this);
1660        if (view) {
1661            SkEvent evt(gCharEvtName);
1662            evt.setFast32(uni);
1663            if (view->doQuery(&evt)) {
1664                return true;
1665            }
1666        }
1667    }
1668
1669    int dx = 0xFF;
1670    int dy = 0xFF;
1671
1672    switch (uni) {
1673        case '5': dx =  0; dy =  0; break;
1674        case '8': dx =  0; dy = -1; break;
1675        case '6': dx =  1; dy =  0; break;
1676        case '2': dx =  0; dy =  1; break;
1677        case '4': dx = -1; dy =  0; break;
1678        case '7': dx = -1; dy = -1; break;
1679        case '9': dx =  1; dy = -1; break;
1680        case '3': dx =  1; dy =  1; break;
1681        case '1': dx = -1; dy =  1; break;
1682
1683        default:
1684            break;
1685    }
1686
1687    if (0xFF != dx && 0xFF != dy) {
1688        if ((dx | dy) == 0) {
1689            fScrollTestX = fScrollTestY = 0;
1690        } else {
1691            fScrollTestX += dx;
1692            fScrollTestY += dy;
1693        }
1694        this->inval(nullptr);
1695        return true;
1696    }
1697
1698    switch (uni) {
1699        case 27:    // ESC
1700            gAnimTimer.stop();
1701            if (this->sendAnimatePulse()) {
1702                this->inval(nullptr);
1703            }
1704            break;
1705        case ' ':
1706            gAnimTimer.togglePauseResume();
1707            if (this->sendAnimatePulse()) {
1708                this->inval(nullptr);
1709            }
1710            break;
1711        case 'B':
1712            post_event_to_sink(new SkEvent("PictFileView::toggleBBox"), curr_view(this));
1713            // Cannot call updateTitle() synchronously, because the toggleBBox event is still in
1714            // the queue.
1715            post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
1716            this->inval(nullptr);
1717            break;
1718        case 'D':
1719            toggleDistanceFieldFonts();
1720            break;
1721        case 'f':
1722            // only
1723            toggleFPS();
1724            break;
1725        case 'F':
1726            FLAGS_portableFonts ^= true;
1727            this->inval(nullptr);
1728            break;
1729        case 'g':
1730            fRequestGrabImage = true;
1731            this->inval(nullptr);
1732            break;
1733        case 'G':
1734            gShowGMBounds = !gShowGMBounds;
1735            post_event_to_sink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1736                            curr_view(this));
1737            this->inval(nullptr);
1738            break;
1739        case 'i':
1740            this->zoomIn();
1741            break;
1742        case 'o':
1743            this->zoomOut();
1744            break;
1745        case 'r':
1746            fRotate = !fRotate;
1747            this->inval(nullptr);
1748            this->updateTitle();
1749            return true;
1750        case 'k':
1751            fPerspAnim = !fPerspAnim;
1752            this->inval(nullptr);
1753            this->updateTitle();
1754            return true;
1755        case 'K':
1756            fSaveToSKP = true;
1757            this->inval(nullptr);
1758            return true;
1759        case 'M':
1760            fUsePicture = !fUsePicture;
1761            this->inval(nullptr);
1762            this->updateTitle();
1763            return true;
1764#if SK_SUPPORT_GPU
1765        case 'p':
1766            {
1767                GrContext* grContext = this->getGrContext();
1768                if (grContext) {
1769                    size_t cacheBytes;
1770                    grContext->getResourceCacheUsage(nullptr, &cacheBytes);
1771                    grContext->freeGpuResources();
1772                    SkDebugf("Purged %d bytes from the GPU resource cache.\n", cacheBytes);
1773                }
1774            }
1775            return true;
1776#endif
1777        default:
1778            break;
1779    }
1780
1781    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1782        this->onUpdateMenu(fAppMenu);
1783        this->onUpdateMenu(fSlideMenu);
1784        return true;
1785    }
1786    return this->INHERITED::onHandleChar(uni);
1787}
1788
1789void SampleWindow::setDeviceType(DeviceType type) {
1790    if (type == fDeviceType)
1791        return;
1792
1793    fDevManager->tearDownBackend(this);
1794
1795    fDeviceType = type;
1796
1797    fDevManager->setUpBackend(this, fMSAASampleCount);
1798
1799    this->updateTitle();
1800    this->inval(nullptr);
1801}
1802
1803void SampleWindow::setDeviceColorType(SkColorType ct, SkColorProfileType pt) {
1804    this->setColorType(ct, pt);
1805
1806    fDevManager->tearDownBackend(this);
1807
1808    fDevManager->setUpBackend(this, fMSAASampleCount);
1809
1810    this->updateTitle();
1811    this->inval(nullptr);
1812}
1813
1814void SampleWindow::toggleSlideshow() {
1815    fAnimating = !fAnimating;
1816    this->postAnimatingEvent();
1817    this->updateTitle();
1818}
1819
1820void SampleWindow::toggleRendering() {
1821    this->setDeviceType(cycle_devicetype(fDeviceType));
1822    this->updateTitle();
1823    this->inval(nullptr);
1824}
1825
1826void SampleWindow::toggleFPS() {
1827    fMeasureFPS = !fMeasureFPS;
1828    this->updateTitle();
1829    this->inval(nullptr);
1830}
1831
1832void SampleWindow::toggleDistanceFieldFonts() {
1833    // reset backend
1834    fDevManager->tearDownBackend(this);
1835    fDevManager->setUpBackend(this, fMSAASampleCount);
1836
1837    SkSurfaceProps props = this->getSurfaceProps();
1838    uint32_t flags = props.flags() ^ SkSurfaceProps::kUseDeviceIndependentFonts_Flag;
1839    this->setSurfaceProps(SkSurfaceProps(flags, props.pixelGeometry()));
1840
1841    this->updateTitle();
1842    this->inval(nullptr);
1843}
1844
1845#include "SkDumpCanvas.h"
1846
1847bool SampleWindow::onHandleKey(SkKey key) {
1848    {
1849        SkView* view = curr_view(this);
1850        if (view) {
1851            SkEvent evt(gKeyEvtName);
1852            evt.setFast32(key);
1853            if (view->doQuery(&evt)) {
1854                return true;
1855            }
1856        }
1857    }
1858    switch (key) {
1859        case kRight_SkKey:
1860            if (this->nextSample()) {
1861                return true;
1862            }
1863            break;
1864        case kLeft_SkKey:
1865            if (this->previousSample()) {
1866                return true;
1867            }
1868            return true;
1869        case kUp_SkKey:
1870            this->changeZoomLevel(1.f / 32.f);
1871            return true;
1872        case kDown_SkKey:
1873            this->changeZoomLevel(-1.f / 32.f);
1874            return true;
1875        case kOK_SkKey: {
1876            SkString title;
1877            if (curr_title(this, &title)) {
1878                writeTitleToPrefs(title.c_str());
1879            }
1880            return true;
1881        }
1882        case kBack_SkKey:
1883            this->showOverview();
1884            return true;
1885        default:
1886            break;
1887    }
1888    return this->INHERITED::onHandleKey(key);
1889}
1890
1891///////////////////////////////////////////////////////////////////////////////
1892
1893static const char gGestureClickType[] = "GestureClickType";
1894
1895bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1896        void* owner, unsigned modi) {
1897    if (Click::kMoved_State == state) {
1898        updatePointer(x, y);
1899    }
1900    int w = SkScalarRoundToInt(this->width());
1901    int h = SkScalarRoundToInt(this->height());
1902
1903    // check for the resize-box
1904    if (w - x < 16 && h - y < 16) {
1905        return false;   // let the OS handle the click
1906    }
1907    else if (fMagnify) {
1908        //it's only necessary to update the drawing if there's a click
1909        this->inval(nullptr);
1910        return false; //prevent dragging while magnify is enabled
1911    } else {
1912        // capture control+option, and trigger debugger
1913        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1914            if (Click::kDown_State == state) {
1915                SkEvent evt("debug-hit-test");
1916                evt.setS32("debug-hit-test-x", x);
1917                evt.setS32("debug-hit-test-y", y);
1918                curr_view(this)->doEvent(evt);
1919            }
1920            return true;
1921        } else {
1922            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
1923        }
1924    }
1925}
1926
1927class GestureClick : public SkView::Click {
1928public:
1929    GestureClick(SkView* target) : SkView::Click(target) {
1930        this->setType(gGestureClickType);
1931    }
1932
1933    static bool IsGesture(Click* click) {
1934        return click->isType(gGestureClickType);
1935    }
1936};
1937
1938SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
1939                                                unsigned modi) {
1940    return new GestureClick(this);
1941}
1942
1943bool SampleWindow::onClick(Click* click) {
1944    if (GestureClick::IsGesture(click)) {
1945        float x = static_cast<float>(click->fICurr.fX);
1946        float y = static_cast<float>(click->fICurr.fY);
1947
1948        switch (click->fState) {
1949            case SkView::Click::kDown_State:
1950                fGesture.touchBegin(click->fOwner, x, y);
1951                break;
1952            case SkView::Click::kMoved_State:
1953                fGesture.touchMoved(click->fOwner, x, y);
1954                this->updateMatrix();
1955                break;
1956            case SkView::Click::kUp_State:
1957                fGesture.touchEnd(click->fOwner);
1958                this->updateMatrix();
1959                break;
1960        }
1961        return true;
1962    }
1963    return false;
1964}
1965
1966///////////////////////////////////////////////////////////////////////////////
1967
1968void SampleWindow::loadView(SkView* view) {
1969    SkView::F2BIter iter(this);
1970    SkView* prev = iter.next();
1971    if (prev) {
1972        prev->detachFromParent();
1973    }
1974
1975    view->setVisibleP(true);
1976    view->setClipToBounds(false);
1977    this->attachChildToFront(view)->unref();
1978    view->setSize(this->width(), this->height());
1979
1980    //repopulate the slide menu when a view is loaded
1981    fSlideMenu->reset();
1982
1983    this->onUpdateMenu(fSlideMenu);
1984    this->updateTitle();
1985}
1986
1987static const char* gDeviceTypePrefix[] = {
1988    "raster: ",
1989#if SK_SUPPORT_GPU
1990    "opengl: ",
1991#if SK_ANGLE
1992    "angle: ",
1993#endif // SK_ANGLE
1994#if SK_COMMAND_BUFFER
1995    "command buffer: ",
1996#endif // SK_COMMAND_BUFFER
1997#endif // SK_SUPPORT_GPU
1998};
1999static_assert(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2000              "array_size_mismatch");
2001
2002static const char* trystate_str(SkOSMenu::TriState state,
2003                                const char trueStr[], const char falseStr[]) {
2004    if (SkOSMenu::kOnState == state) {
2005        return trueStr;
2006    } else if (SkOSMenu::kOffState == state) {
2007        return falseStr;
2008    }
2009    return nullptr;
2010}
2011
2012bool SampleWindow::getRawTitle(SkString* title) {
2013    return curr_title(this, title);
2014}
2015
2016void SampleWindow::updateTitle() {
2017    SkString title;
2018    if (!this->getRawTitle(&title)) {
2019        title.set("<unknown>");
2020    }
2021
2022    title.prepend(gDeviceTypePrefix[fDeviceType]);
2023
2024    if (fTilingMode != kNo_Tiling) {
2025        title.prependf("<T: %s> ", gTilingInfo[fTilingMode].label);
2026    }
2027    if (fAnimating) {
2028        title.prepend("<A> ");
2029    }
2030    if (fRotate) {
2031        title.prepend("<R> ");
2032    }
2033    if (fPerspAnim) {
2034        title.prepend("<K> ");
2035    }
2036    if (this->getSurfaceProps().flags() & SkSurfaceProps::kUseDeviceIndependentFonts_Flag) {
2037        title.prepend("<DIF> ");
2038    }
2039    if (fUsePicture) {
2040        title.prepend("<P> ");
2041    }
2042
2043    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2044    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2045    title.prepend(gFilterQualityStates[fFilterQualityIndex].fLabel);
2046    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2047    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : nullptr);
2048    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : nullptr);
2049    title.prepend(gHintingStates[fHintingState].label);
2050
2051    if (fZoomLevel) {
2052        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2053    }
2054
2055    if (fMeasureFPS) {
2056        title.appendf(" %8.4f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2057    }
2058
2059#if SK_SUPPORT_GPU
2060    if (IsGpuDeviceType(fDeviceType) &&
2061        fDevManager &&
2062        fDevManager->getGrRenderTarget() &&
2063        fDevManager->getGrRenderTarget()->numColorSamples() > 0) {
2064        title.appendf(" [MSAA: %d]",
2065                       fDevManager->getGrRenderTarget()->numColorSamples());
2066    }
2067#endif
2068
2069    title.appendf(" %s", find_config_name(this->info()));
2070
2071    this->setTitle(title.c_str());
2072}
2073
2074void SampleWindow::onSizeChange() {
2075    this->INHERITED::onSizeChange();
2076
2077    SkView::F2BIter iter(this);
2078    SkView* view = iter.next();
2079    view->setSize(this->width(), this->height());
2080
2081    // rebuild our clippath
2082    {
2083        const SkScalar W = this->width();
2084        const SkScalar H = this->height();
2085
2086        fClipPath.reset();
2087#if 0
2088        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2089            SkRect r;
2090            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2091            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2092                fClipPath.addRect(r);
2093        }
2094#else
2095        SkRect r;
2096        r.set(0, 0, W, H);
2097        fClipPath.addRect(r, SkPath::kCCW_Direction);
2098        r.set(W/4, H/4, W*3/4, H*3/4);
2099        fClipPath.addRect(r, SkPath::kCW_Direction);
2100#endif
2101    }
2102
2103    fZoomCenterX = SkScalarHalf(this->width());
2104    fZoomCenterY = SkScalarHalf(this->height());
2105
2106#ifdef SK_BUILD_FOR_ANDROID
2107    // FIXME: The first draw after a size change does not work on Android, so
2108    // we post an invalidate.
2109    this->postInvalDelay();
2110#endif
2111    this->updateTitle();    // to refresh our config
2112    fDevManager->windowSizeChanged(this);
2113
2114    if (fTilingMode != kNo_Tiling && SampleView::IsSampleView(view)) {
2115        ((SampleView*)view)->onTileSizeChanged(this->tileSize());
2116    }
2117}
2118
2119///////////////////////////////////////////////////////////////////////////////
2120
2121static const char is_sample_view_tag[] = "sample-is-sample-view";
2122static const char repeat_count_tag[] = "sample-set-repeat-count";
2123
2124bool SampleView::IsSampleView(SkView* view) {
2125    SkEvent evt(is_sample_view_tag);
2126    return view->doQuery(&evt);
2127}
2128
2129bool SampleView::SetRepeatDraw(SkView* view, int count) {
2130    SkEvent evt(repeat_count_tag);
2131    evt.setFast32(count);
2132    return view->doEvent(evt);
2133}
2134
2135bool SampleView::onEvent(const SkEvent& evt) {
2136    if (evt.isType(repeat_count_tag)) {
2137        fRepeatCount = evt.getFast32();
2138        return true;
2139    }
2140    return this->INHERITED::onEvent(evt);
2141}
2142
2143bool SampleView::onQuery(SkEvent* evt) {
2144    if (evt->isType(is_sample_view_tag)) {
2145        return true;
2146    }
2147    return this->INHERITED::onQuery(evt);
2148}
2149
2150void SampleView::onDraw(SkCanvas* canvas) {
2151    if (!fHaveCalledOnceBeforeDraw) {
2152        fHaveCalledOnceBeforeDraw = true;
2153        this->onOnceBeforeDraw();
2154    }
2155    this->onDrawBackground(canvas);
2156
2157    for (int i = 0; i < fRepeatCount; i++) {
2158        SkAutoCanvasRestore acr(canvas, true);
2159        this->onDrawContent(canvas);
2160#if SK_SUPPORT_GPU
2161        // Ensure the GrContext doesn't batch across draw loops.
2162        if (GrContext* context = canvas->getGrContext()) {
2163            context->flush();
2164        }
2165#endif
2166    }
2167}
2168
2169void SampleView::onDrawBackground(SkCanvas* canvas) {
2170    canvas->drawColor(fBGColor);
2171}
2172
2173///////////////////////////////////////////////////////////////////////////////
2174
2175template <typename T> void SkTBSort(T array[], int count) {
2176    for (int i = 1; i < count - 1; i++) {
2177        bool didSwap = false;
2178        for (int j = count - 1; j > i; --j) {
2179            if (array[j] < array[j-1]) {
2180                T tmp(array[j-1]);
2181                array[j-1] = array[j];
2182                array[j] = tmp;
2183                didSwap = true;
2184            }
2185        }
2186        if (!didSwap) {
2187            break;
2188        }
2189    }
2190
2191    for (int k = 0; k < count - 1; k++) {
2192        SkASSERT(!(array[k+1] < array[k]));
2193    }
2194}
2195
2196#include "SkRandom.h"
2197
2198static void rand_rect(SkIRect* rect, SkRandom& rand) {
2199    int bits = 8;
2200    int shift = 32 - bits;
2201    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2202              rand.nextU() >> shift, rand.nextU() >> shift);
2203    rect->sort();
2204}
2205
2206static void dumpRect(const SkIRect& r) {
2207    SkDebugf(" { %d, %d, %d, %d },\n",
2208             r.fLeft, r.fTop,
2209             r.fRight, r.fBottom);
2210}
2211
2212static void test_rects(const SkIRect rect[], int count) {
2213    SkRegion rgn0, rgn1;
2214
2215    for (int i = 0; i < count; i++) {
2216        rgn0.op(rect[i], SkRegion::kUnion_Op);
2217     //   dumpRect(rect[i]);
2218    }
2219    rgn1.setRects(rect, count);
2220
2221    if (rgn0 != rgn1) {
2222        SkDebugf("\n");
2223        for (int i = 0; i < count; i++) {
2224            dumpRect(rect[i]);
2225        }
2226        SkDebugf("\n");
2227    }
2228}
2229
2230static void test() {
2231    size_t i;
2232
2233    const SkIRect r0[] = {
2234        { 0, 0, 1, 1 },
2235        { 2, 2, 3, 3 },
2236    };
2237    const SkIRect r1[] = {
2238        { 0, 0, 1, 3 },
2239        { 1, 1, 2, 2 },
2240        { 2, 0, 3, 3 },
2241    };
2242    const SkIRect r2[] = {
2243        { 0, 0, 1, 2 },
2244        { 2, 1, 3, 3 },
2245        { 4, 0, 5, 1 },
2246        { 6, 0, 7, 4 },
2247    };
2248
2249    static const struct {
2250        const SkIRect* fRects;
2251        int            fCount;
2252    } gRecs[] = {
2253        { r0, SK_ARRAY_COUNT(r0) },
2254        { r1, SK_ARRAY_COUNT(r1) },
2255        { r2, SK_ARRAY_COUNT(r2) },
2256    };
2257
2258    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2259        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2260    }
2261
2262    SkRandom rand;
2263    for (i = 0; i < 10000; i++) {
2264        SkRegion rgn0, rgn1;
2265
2266        const int N = 8;
2267        SkIRect rect[N];
2268        for (int j = 0; j < N; j++) {
2269            rand_rect(&rect[j], rand);
2270        }
2271        test_rects(rect, N);
2272    }
2273}
2274
2275// FIXME: this should be in a header
2276SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2277SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2278    if (false) { // avoid bit rot, suppress warning
2279        test();
2280    }
2281    return new SampleWindow(hwnd, argc, argv, nullptr);
2282}
2283
2284// FIXME: this should be in a header
2285void get_preferred_size(int* x, int* y, int* width, int* height);
2286void get_preferred_size(int* x, int* y, int* width, int* height) {
2287    *x = 10;
2288    *y = 50;
2289    *width = 640;
2290    *height = 480;
2291}
2292
2293#ifdef SK_BUILD_FOR_IOS
2294#include "SkApplication.h"
2295IOS_launch_type set_cmd_line_args(int , char *[], const char* resourceDir) {
2296    SetResourcePath(resourceDir);
2297    return kApplication__iOSLaunchType;
2298}
2299#endif
2300
2301void application_init() {
2302//    setenv("ANDROID_ROOT", "../../../data", 0);
2303#ifdef SK_BUILD_FOR_MAC
2304    setenv("ANDROID_ROOT", "/android/device/data", 0);
2305#endif
2306    SkGraphics::Init();
2307    SkEvent::Init();
2308}
2309
2310void application_term() {
2311    SkEvent::Term();
2312}
2313