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 "SamplePipeControllers.h"
14#include "SkCanvas.h"
15#include "SkCommandLineFlags.h"
16#include "SkData.h"
17#include "SkDevice.h"
18#include "SkGPipe.h"
19#include "SkGraphics.h"
20#include "SkImageEncoder.h"
21#include "SkOSFile.h"
22#include "SkPDFDevice.h"
23#include "SkPDFDocument.h"
24#include "SkPaint.h"
25#include "SkPicture.h"
26#include "SkPictureRecorder.h"
27#include "SkStream.h"
28#include "SkSurface.h"
29#include "SkTSort.h"
30#include "SkTime.h"
31#include "SkTypeface.h"
32#include "SkWindow.h"
33#include "TransitionView.h"
34#include "sk_tool_utils.h"
35
36#if SK_SUPPORT_GPU
37#include "gl/GrGLInterface.h"
38#include "gl/GrGLUtil.h"
39#include "GrRenderTarget.h"
40#include "GrContext.h"
41#include "SkGpuDevice.h"
42#else
43class GrContext;
44#endif
45
46extern SampleView* CreateSamplePictFileView(const char filename[]);
47
48class PictFileFactory : public SkViewFactory {
49    SkString fFilename;
50public:
51    PictFileFactory(const SkString& filename) : fFilename(filename) {}
52    virtual SkView* operator() () const SK_OVERRIDE {
53        return CreateSamplePictFileView(fFilename.c_str());
54    }
55};
56
57#ifdef SAMPLE_PDF_FILE_VIEWER
58extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
59
60class PdfFileViewerFactory : public SkViewFactory {
61    SkString fFilename;
62public:
63    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
64    virtual SkView* operator() () const SK_OVERRIDE {
65        return CreateSamplePdfFileViewer(fFilename.c_str());
66    }
67};
68#endif  // SAMPLE_PDF_FILE_VIEWER
69
70#define PIPE_FILEx
71#ifdef  PIPE_FILE
72#define FILE_PATH "/path/to/drawing.data"
73#endif
74
75#define PIPE_NETx
76#ifdef  PIPE_NET
77#include "SkSockets.h"
78SkTCPServer gServer;
79#endif
80
81#define USE_ARROWS_FOR_ZOOM true
82
83#if SK_ANGLE
84//#define DEFAULT_TO_ANGLE 1
85#else
86#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
87#endif
88
89#define ANIMATING_EVENTTYPE "nextSample"
90#define ANIMATING_DELAY     250
91
92#ifdef SK_DEBUG
93    #define FPS_REPEAT_MULTIPLIER   1
94#else
95    #define FPS_REPEAT_MULTIPLIER   10
96#endif
97#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
98
99static SampleWindow* gSampleWindow;
100
101static bool gShowGMBounds;
102
103static void post_event_to_sink(SkEvent* evt, SkEventSink* sink) {
104    evt->setTargetID(sink->getSinkID())->post();
105}
106
107///////////////////////////////////////////////////////////////////////////////
108
109static const char* skip_until(const char* str, const char* skip) {
110    if (!str) {
111        return NULL;
112    }
113    return strstr(str, skip);
114}
115
116static const char* skip_past(const char* str, const char* skip) {
117    const char* found = skip_until(str, skip);
118    if (!found) {
119        return NULL;
120    }
121    return found + strlen(skip);
122}
123
124static const char* gPrefFileName = "sampleapp_prefs.txt";
125
126static bool readTitleFromPrefs(SkString* title) {
127    SkFILEStream stream(gPrefFileName);
128    if (!stream.isValid()) {
129        return false;
130    }
131
132    size_t len = stream.getLength();
133    SkString data(len);
134    stream.read(data.writable_str(), len);
135    const char* s = data.c_str();
136
137    s = skip_past(s, "curr-slide-title");
138    s = skip_past(s, "=");
139    s = skip_past(s, "\"");
140    const char* stop = skip_until(s, "\"");
141    if (stop > s) {
142        title->set(s, stop - s);
143        return true;
144    }
145    return false;
146}
147
148static void writeTitleToPrefs(const char* title) {
149    SkFILEWStream stream(gPrefFileName);
150    SkString data;
151    data.printf("curr-slide-title = \"%s\"\n", title);
152    stream.write(data.c_str(), data.size());
153}
154
155///////////////////////////////////////////////////////////////////////////////
156
157class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
158public:
159
160    DefaultDeviceManager() {
161#if SK_SUPPORT_GPU
162        fCurContext = NULL;
163        fCurIntf = NULL;
164        fCurRenderTarget = NULL;
165        fMSAASampleCount = 0;
166#endif
167        fBackend = kNone_BackEndType;
168    }
169
170    virtual ~DefaultDeviceManager() {
171#if SK_SUPPORT_GPU
172        SkSafeUnref(fCurContext);
173        SkSafeUnref(fCurIntf);
174        SkSafeUnref(fCurRenderTarget);
175#endif
176    }
177
178    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
179        SkASSERT(kNone_BackEndType == fBackend);
180
181        fBackend = kNone_BackEndType;
182
183#if SK_SUPPORT_GPU
184        switch (win->getDeviceType()) {
185            case kRaster_DeviceType:
186                // fallthrough
187            case kPicture_DeviceType:
188                // fallthrough
189            case kGPU_DeviceType:
190                // fallthrough
191            case kNullGPU_DeviceType:
192                // all these guys use the native backend
193                fBackend = kNativeGL_BackEndType;
194                break;
195#if SK_ANGLE
196            case kANGLE_DeviceType:
197                // ANGLE is really the only odd man out
198                fBackend = kANGLE_BackEndType;
199                break;
200#endif // SK_ANGLE
201            default:
202                SkASSERT(false);
203                break;
204        }
205        AttachmentInfo attachmentInfo;
206        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
207        if (!result) {
208            SkDebugf("Failed to initialize GL");
209            return;
210        }
211        fMSAASampleCount = msaaSampleCount;
212
213        SkASSERT(NULL == fCurIntf);
214        SkAutoTUnref<const GrGLInterface> glInterface;
215        switch (win->getDeviceType()) {
216            case kRaster_DeviceType:
217                // fallthrough
218            case kPicture_DeviceType:
219                // fallthrough
220            case kGPU_DeviceType:
221                // all these guys use the native interface
222                glInterface.reset(GrGLCreateNativeInterface());
223                break;
224#if SK_ANGLE
225            case kANGLE_DeviceType:
226                glInterface.reset(GrGLCreateANGLEInterface());
227                break;
228#endif // SK_ANGLE
229            case kNullGPU_DeviceType:
230                glInterface.reset(GrGLCreateNullInterface());
231                break;
232            default:
233                SkASSERT(false);
234                break;
235        }
236
237        // Currently SampleApp does not use NVPR. TODO: Provide an NVPR device type that is skipped
238        // when the driver doesn't support NVPR.
239        fCurIntf = GrGLInterfaceRemoveNVPR(glInterface.get());
240
241        SkASSERT(NULL == fCurContext);
242        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
243
244        if (NULL == fCurContext || NULL == fCurIntf) {
245            // We need some context and interface to see results
246            SkSafeUnref(fCurContext);
247            SkSafeUnref(fCurIntf);
248            fCurContext = NULL;
249            fCurIntf = NULL;
250            SkDebugf("Failed to setup 3D");
251
252            win->detach();
253        }
254#endif // SK_SUPPORT_GPU
255        // call windowSizeChanged to create the render target
256        this->windowSizeChanged(win);
257    }
258
259    virtual void tearDownBackend(SampleWindow *win) {
260#if SK_SUPPORT_GPU
261        SkSafeUnref(fCurContext);
262        fCurContext = NULL;
263
264        SkSafeUnref(fCurIntf);
265        fCurIntf = NULL;
266
267        SkSafeUnref(fCurRenderTarget);
268        fCurRenderTarget = NULL;
269#endif
270        win->detach();
271        fBackend = kNone_BackEndType;
272    }
273
274    virtual SkSurface* createSurface(SampleWindow::DeviceType dType,
275                                     SampleWindow* win) SK_OVERRIDE {
276#if SK_SUPPORT_GPU
277        if (IsGpuDeviceType(dType) && fCurContext) {
278            return SkSurface::NewRenderTargetDirect(fCurRenderTarget);
279        }
280#endif
281        return NULL;
282    }
283
284    virtual void publishCanvas(SampleWindow::DeviceType dType,
285                               SkCanvas* canvas,
286                               SampleWindow* win) {
287#if SK_SUPPORT_GPU
288        if (fCurContext) {
289            // in case we have queued drawing calls
290            fCurContext->flush();
291
292            if (!IsGpuDeviceType(dType)) {
293                // need to send the raster bits to the (gpu) window
294                fCurContext->setRenderTarget(fCurRenderTarget);
295                const SkBitmap& bm = win->getBitmap();
296                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
297                                             SkImageInfo2GrPixelConfig(bm.colorType(),
298                                                                       bm.alphaType()),
299                                             bm.getPixels(),
300                                             bm.rowBytes());
301            }
302        }
303#endif
304
305        win->present();
306    }
307
308    virtual void windowSizeChanged(SampleWindow* win) {
309#if SK_SUPPORT_GPU
310        if (fCurContext) {
311            AttachmentInfo attachmentInfo;
312            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
313
314            GrBackendRenderTargetDesc desc;
315            desc.fWidth = SkScalarRoundToInt(win->width());
316            desc.fHeight = SkScalarRoundToInt(win->height());
317            desc.fConfig = kSkia8888_GrPixelConfig;
318            desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
319            desc.fSampleCnt = attachmentInfo.fSampleCount;
320            desc.fStencilBits = attachmentInfo.fStencilBits;
321            GrGLint buffer;
322            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
323            desc.fRenderTargetHandle = buffer;
324
325            SkSafeUnref(fCurRenderTarget);
326            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
327        }
328#endif
329    }
330
331    virtual GrContext* getGrContext() {
332#if SK_SUPPORT_GPU
333        return fCurContext;
334#else
335        return NULL;
336#endif
337    }
338
339    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
340#if SK_SUPPORT_GPU
341        return fCurRenderTarget;
342#else
343        return NULL;
344#endif
345    }
346
347private:
348
349#if SK_SUPPORT_GPU
350    GrContext*              fCurContext;
351    const GrGLInterface*    fCurIntf;
352    GrRenderTarget*         fCurRenderTarget;
353    int fMSAASampleCount;
354#endif
355
356    SkOSWindow::SkBackEndTypes fBackend;
357
358    typedef SampleWindow::DeviceManager INHERITED;
359};
360
361///////////////
362static const char view_inval_msg[] = "view-inval-msg";
363
364void SampleWindow::postInvalDelay() {
365    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
366}
367
368static bool isInvalEvent(const SkEvent& evt) {
369    return evt.isType(view_inval_msg);
370}
371//////////////////
372
373SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
374    : fCreateFunc(func) {
375}
376
377SkView* SkFuncViewFactory::operator() () const {
378    return (*fCreateFunc)();
379}
380
381#include "GMSampleView.h"
382
383SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
384    : fFunc(func) {
385}
386
387SkView* SkGMSampleViewFactory::operator() () const {
388    skiagm::GM* gm = fFunc(NULL);
389    gm->setMode(skiagm::GM::kSample_Mode);
390    return new GMSampleView(gm);
391}
392
393SkViewRegister* SkViewRegister::gHead;
394SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
395    fFact->ref();
396    fChain = gHead;
397    gHead = this;
398}
399
400SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
401    fFact = new SkFuncViewFactory(func);
402    fChain = gHead;
403    gHead = this;
404}
405
406SkViewRegister::SkViewRegister(GMFactoryFunc func) {
407    fFact = new SkGMSampleViewFactory(func);
408    fChain = gHead;
409    gHead = this;
410}
411
412class AutoUnrefArray {
413public:
414    AutoUnrefArray() {}
415    ~AutoUnrefArray() {
416        int count = fObjs.count();
417        for (int i = 0; i < count; ++i) {
418            fObjs[i]->unref();
419        }
420    }
421    SkRefCnt*& push_back() { return *fObjs.append(); }
422
423private:
424    SkTDArray<SkRefCnt*> fObjs;
425};
426
427// registers GMs as Samples
428// This can't be performed during static initialization because it could be
429// run before GMRegistry has been fully built.
430static void SkGMRegistyToSampleRegistry() {
431    static bool gOnce;
432    static AutoUnrefArray fRegisters;
433
434    if (!gOnce) {
435        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
436        while (gmreg) {
437            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
438            gmreg = gmreg->next();
439        }
440        gOnce = true;
441    }
442}
443
444//////////////////////////////////////////////////////////////////////////////
445
446enum FlipAxisEnum {
447    kFlipAxis_X = (1 << 0),
448    kFlipAxis_Y = (1 << 1)
449};
450
451#include "SkDrawFilter.h"
452
453struct HintingState {
454    SkPaint::Hinting hinting;
455    const char* name;
456    const char* label;
457};
458static HintingState gHintingStates[] = {
459    {SkPaint::kNo_Hinting, "Mixed", NULL },
460    {SkPaint::kNo_Hinting, "None", "H0 " },
461    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
462    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
463    {SkPaint::kFull_Hinting, "Full", "Hf " },
464};
465
466struct FilterLevelState {
467    SkPaint::FilterLevel    fLevel;
468    const char*             fName;
469    const char*             fLabel;
470};
471static FilterLevelState gFilterLevelStates[] = {
472    { SkPaint::kNone_FilterLevel,   "Mixed",    NULL    },
473    { SkPaint::kNone_FilterLevel,   "None",     "F0 "   },
474    { SkPaint::kLow_FilterLevel,    "Low",      "F1 "   },
475    { SkPaint::kMedium_FilterLevel, "Medium",   "F2 "   },
476    { SkPaint::kHigh_FilterLevel,   "High",     "F3 "   },
477};
478
479class FlagsDrawFilter : public SkDrawFilter {
480public:
481    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa,
482                    SkOSMenu::TriState subpixel, int hinting, int filterlevel)
483        : fLCDState(lcd)
484        , fAAState(aa)
485        , fSubpixelState(subpixel)
486        , fHintingState(hinting)
487        , fFilterLevelIndex(filterlevel)
488    {
489        SkASSERT((unsigned)filterlevel < SK_ARRAY_COUNT(gFilterLevelStates));
490    }
491
492    virtual bool filter(SkPaint* paint, Type t) {
493        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
494            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
495        }
496        if (SkOSMenu::kMixedState != fAAState) {
497            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
498        }
499        if (0 != fFilterLevelIndex) {
500            paint->setFilterLevel(gFilterLevelStates[fFilterLevelIndex].fLevel);
501        }
502        if (SkOSMenu::kMixedState != fSubpixelState) {
503            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
504        }
505        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
506            paint->setHinting(gHintingStates[fHintingState].hinting);
507        }
508        return true;
509    }
510
511private:
512    SkOSMenu::TriState  fLCDState;
513    SkOSMenu::TriState  fAAState;
514    SkOSMenu::TriState  fSubpixelState;
515    int fHintingState;
516    int fFilterLevelIndex;
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
620enum TilingMode {
621    kNo_Tiling,
622    kAbs_128x128_Tiling,
623    kAbs_256x256_Tiling,
624    kRel_4x4_Tiling,
625    kRel_1x16_Tiling,
626    kRel_16x1_Tiling,
627
628    kLast_TilingMode_Enum
629};
630
631struct TilingInfo {
632    const char* label;
633    SkScalar    w, h;
634};
635
636static const struct TilingInfo gTilingInfo[] = {
637    { "No tiling", SK_Scalar1        , SK_Scalar1         }, // kNo_Tiling
638    { "128x128"  , SkIntToScalar(128), SkIntToScalar(128) }, // kAbs_128x128_Tiling
639    { "256x256"  , SkIntToScalar(256), SkIntToScalar(256) }, // kAbs_256x256_Tiling
640    { "1/4x1/4"  , SK_Scalar1 / 4    , SK_Scalar1 / 4     }, // kRel_4x4_Tiling
641    { "1/1x1/16" , SK_Scalar1        , SK_Scalar1 / 16    }, // kRel_1x16_Tiling
642    { "1/16x1/1" , SK_Scalar1 / 16   , SK_Scalar1         }, // kRel_16x1_Tiling
643};
644SK_COMPILE_ASSERT((SK_ARRAY_COUNT(gTilingInfo) == kLast_TilingMode_Enum),
645                  Incomplete_tiling_labels);
646
647SkSize SampleWindow::tileSize() const {
648    SkASSERT((TilingMode)fTilingMode < kLast_TilingMode_Enum);
649    const struct TilingInfo* info = gTilingInfo + fTilingMode;
650    return SkSize::Make(info->w > SK_Scalar1 ? info->w : this->width() * info->w,
651                        info->h > SK_Scalar1 ? info->h : this->height() * info->h);
652}
653//////////////////////////////////////////////////////////////////////////////
654
655static SkView* curr_view(SkWindow* wind) {
656    SkView::F2BIter iter(wind);
657    return iter.next();
658}
659
660static bool curr_title(SkWindow* wind, SkString* title) {
661    SkView* view = curr_view(wind);
662    if (view) {
663        SkEvent evt(gTitleEvtName);
664        if (view->doQuery(&evt)) {
665            title->set(evt.findString(gTitleEvtName));
666            return true;
667        }
668    }
669    return false;
670}
671
672void SampleWindow::setZoomCenter(float x, float y)
673{
674    fZoomCenterX = x;
675    fZoomCenterY = y;
676}
677
678bool SampleWindow::zoomIn()
679{
680    // Arbitrarily decided
681    if (fFatBitsScale == 25) return false;
682    fFatBitsScale++;
683    this->inval(NULL);
684    return true;
685}
686
687bool SampleWindow::zoomOut()
688{
689    if (fFatBitsScale == 1) return false;
690    fFatBitsScale--;
691    this->inval(NULL);
692    return true;
693}
694
695void SampleWindow::updatePointer(int x, int y)
696{
697    fMouseX = x;
698    fMouseY = y;
699    if (fShowZoomer) {
700        this->inval(NULL);
701    }
702}
703
704static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
705    static const SampleWindow::DeviceType gCT[] = {
706        SampleWindow::kPicture_DeviceType,
707#if SK_SUPPORT_GPU
708        SampleWindow::kGPU_DeviceType,
709#if SK_ANGLE
710        SampleWindow::kANGLE_DeviceType,
711#endif // SK_ANGLE
712        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
713#endif // SK_SUPPORT_GPU
714        SampleWindow::kRaster_DeviceType
715    };
716    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
717    return gCT[ct];
718}
719
720static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
721    SkView* view = (*sampleFactory)();
722    SkString title;
723    SampleCode::RequestTitle(view, &title);
724    view->unref();
725    return title;
726}
727
728static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
729    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
730}
731
732DEFINE_string(slide, "", "Start on this sample.");
733DEFINE_int32(msaa, 0, "Request multisampling with this count.");
734DEFINE_string(pictureDir, "", "Read pictures from here.");
735DEFINE_string(picture, "", "Path to single picture.");
736DEFINE_bool(sort, false, "Sort samples by title.");
737DEFINE_bool(list, false, "List samples?");
738#ifdef SAMPLE_PDF_FILE_VIEWER
739DEFINE_string(pdfPath, "", "Path to direcotry of pdf files.");
740#endif
741
742SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
743    : INHERITED(hwnd)
744    , fDevManager(NULL) {
745
746    SkCommandLineFlags::Parse(argc, argv);
747
748    fCurrIndex = -1;
749
750    if (!FLAGS_pictureDir.isEmpty()) {
751        SkOSFile::Iter iter(FLAGS_pictureDir[0], "skp");
752        SkString filename;
753        while (iter.next(&filename)) {
754            *fSamples.append() = new PictFileFactory(
755                SkOSPath::Join(FLAGS_pictureDir[0], filename.c_str()));
756        }
757    }
758    if (!FLAGS_picture.isEmpty()) {
759        SkString path(FLAGS_picture[0]);
760        fCurrIndex = fSamples.count();
761        *fSamples.append() = new PictFileFactory(path);
762    }
763#ifdef SAMPLE_PDF_FILE_VIEWER
764    if (!FLAGS_pdfPath.isEmpty()) {
765        SkOSFile::Iter iter(FLAGS_pdfPath[0], "pdf");
766        SkString filename;
767        while (iter.next(&filename)) {
768            *fSamples.append() = new PdfFileViewerFactory(
769                SkOSPath::Join(FLAGS_pictureDir[0], filename.c_str()));
770        }
771    }
772#endif
773    SkGMRegistyToSampleRegistry();
774    {
775        const SkViewRegister* reg = SkViewRegister::Head();
776        while (reg) {
777            *fSamples.append() = reg->factory();
778            reg = reg->next();
779        }
780    }
781
782    if (FLAGS_sort) {
783        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
784        // skp -> pdf -> png fails.
785        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
786    }
787
788    if (!FLAGS_slide.isEmpty()) {
789        fCurrIndex = findByTitle(FLAGS_slide[0]);
790        if (fCurrIndex < 0) {
791            fprintf(stderr, "Unknown sample \"%s\"\n", FLAGS_slide[0]);
792            listTitles();
793        }
794    }
795
796    fMSAASampleCount = FLAGS_msaa;
797
798    if (FLAGS_list) {
799        listTitles();
800    }
801
802    if (fCurrIndex < 0) {
803        SkString title;
804        if (readTitleFromPrefs(&title)) {
805            fCurrIndex = findByTitle(title.c_str());
806        }
807    }
808
809    if (fCurrIndex < 0) {
810        fCurrIndex = 0;
811    }
812
813    gSampleWindow = this;
814
815#ifdef  PIPE_FILE
816    //Clear existing file or create file if it doesn't exist
817    FILE* f = fopen(FILE_PATH, "wb");
818    fclose(f);
819#endif
820
821    fDeviceType = kRaster_DeviceType;
822
823#if DEFAULT_TO_GPU
824    fDeviceType = kGPU_DeviceType;
825#endif
826#if SK_ANGLE && DEFAULT_TO_ANGLE
827    fDeviceType = kANGLE_DeviceType;
828#endif
829
830    fUseClip = false;
831    fNClip = false;
832    fAnimating = false;
833    fRotate = false;
834    fRotateAnimTime = 0;
835    fPerspAnim = false;
836    fPerspAnimTime = 0;
837    fRequestGrabImage = false;
838    fPipeState = SkOSMenu::kOffState;
839    fTilingMode = kNo_Tiling;
840    fMeasureFPS = false;
841    fLCDState = SkOSMenu::kMixedState;
842    fAAState = SkOSMenu::kMixedState;
843    fSubpixelState = SkOSMenu::kMixedState;
844    fHintingState = 0;
845    fFilterLevelIndex = 0;
846    fFlipAxis = 0;
847    fScrollTestX = fScrollTestY = 0;
848
849    fMouseX = fMouseY = 0;
850    fFatBitsScale = 8;
851    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
852    fShowZoomer = false;
853
854    fZoomLevel = 0;
855    fZoomScale = SK_Scalar1;
856
857    fMagnify = false;
858
859    fSaveToPdf = false;
860    fPdfCanvas = NULL;
861
862    fTransitionNext = 6;
863    fTransitionPrev = 2;
864
865    int sinkID = this->getSinkID();
866    fAppMenu = new SkOSMenu;
867    fAppMenu->setTitle("Global Settings");
868    int itemID;
869
870    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
871                                "Raster", "Picture", "OpenGL",
872#if SK_ANGLE
873                                "ANGLE",
874#endif
875                                NULL);
876    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
877    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
878    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
879    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
880    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
881    itemID = fAppMenu->appendList("FilterLevel", "FilterLevel", sinkID, fFilterLevelIndex,
882                                  gFilterLevelStates[0].fName,
883                                  gFilterLevelStates[1].fName,
884                                  gFilterLevelStates[2].fName,
885                                  gFilterLevelStates[3].fName,
886                                  gFilterLevelStates[4].fName,
887                                  NULL);
888    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
889    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
890    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
891    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
892                                  gHintingStates[0].name,
893                                  gHintingStates[1].name,
894                                  gHintingStates[2].name,
895                                  gHintingStates[3].name,
896                                  gHintingStates[4].name,
897                                  NULL);
898    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
899
900    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
901                                                  fPipeState);
902    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
903
904    itemID =fAppMenu->appendList("Tiling", "Tiling", sinkID, fTilingMode,
905                                 gTilingInfo[kNo_Tiling].label,
906                                 gTilingInfo[kAbs_128x128_Tiling].label,
907                                 gTilingInfo[kAbs_256x256_Tiling].label,
908                                 gTilingInfo[kRel_4x4_Tiling].label,
909                                 gTilingInfo[kRel_1x16_Tiling].label,
910                                 gTilingInfo[kRel_16x1_Tiling].label,
911                                 NULL);
912    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
913
914    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
915    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
916    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
917    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
918    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
919    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
920    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
921    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
922    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
923    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
924    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
925    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
926    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
927                                fTransitionNext, "Up", "Up and Right", "Right",
928                                "Down and Right", "Down", "Down and Left",
929                                "Left", "Up and Left", NULL);
930    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
931    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
932                                fTransitionPrev, "Up", "Up and Right", "Right",
933                                "Down and Right", "Down", "Down and Left",
934                                "Left", "Up and Left", NULL);
935    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
936    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
937    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
938
939    this->addMenu(fAppMenu);
940    fSlideMenu = new SkOSMenu;
941    this->addMenu(fSlideMenu);
942
943    this->setColorType(kN32_SkColorType);
944    this->setVisibleP(true);
945    this->setClipToBounds(false);
946
947    this->loadView((*fSamples[fCurrIndex])());
948
949    fPDFData = NULL;
950
951    if (NULL == devManager) {
952        fDevManager = new DefaultDeviceManager();
953    } else {
954        devManager->ref();
955        fDevManager = devManager;
956    }
957    fDevManager->setUpBackend(this, fMSAASampleCount);
958
959    // If another constructor set our dimensions, ensure that our
960    // onSizeChange gets called.
961    if (this->height() && this->width()) {
962        this->onSizeChange();
963    }
964
965    // can't call this synchronously, since it may require a subclass to
966    // to implement, or the caller may need us to have returned from the
967    // constructor first. Hence we post an event to ourselves.
968//    this->updateTitle();
969    post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
970}
971
972SampleWindow::~SampleWindow() {
973    delete fPdfCanvas;
974    SkSafeUnref(fTypeface);
975    SkSafeUnref(fDevManager);
976}
977
978
979int SampleWindow::findByTitle(const char title[]) {
980    int i, count = fSamples.count();
981    for (i = 0; i < count; i++) {
982        if (getSampleTitle(i).equals(title)) {
983            return i;
984        }
985    }
986    return -1;
987}
988
989void SampleWindow::listTitles() {
990    int count = fSamples.count();
991    SkDebugf("All Slides:\n");
992    for (int i = 0; i < count; i++) {
993        SkDebugf("    %s\n", getSampleTitle(i).c_str());
994    }
995}
996
997static SkBitmap capture_bitmap(SkCanvas* canvas) {
998    SkBitmap bm;
999    if (bm.tryAllocPixels(canvas->imageInfo())) {
1000        canvas->readPixels(&bm, 0, 0);
1001    }
1002    return bm;
1003}
1004
1005static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1006                        SkBitmap* diff) {
1007    SkBitmap src = capture_bitmap(canvas);
1008
1009    SkAutoLockPixels alp0(src);
1010    SkAutoLockPixels alp1(orig);
1011    for (int y = 0; y < src.height(); y++) {
1012        const void* srcP = src.getAddr(0, y);
1013        const void* origP = orig.getAddr(0, y);
1014        size_t bytes = src.width() * src.bytesPerPixel();
1015        if (memcmp(srcP, origP, bytes)) {
1016            SkDebugf("---------- difference on line %d\n", y);
1017            return true;
1018        }
1019    }
1020    return false;
1021}
1022
1023static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1024{
1025    SkColor desiredColor = paint.getColor();
1026    paint.setColor(SK_ColorWHITE);
1027    const char* c_str = string.c_str();
1028    size_t size = string.size();
1029    SkRect bounds;
1030    paint.measureText(c_str, size, &bounds);
1031    bounds.offset(left, top);
1032    SkScalar inset = SkIntToScalar(-2);
1033    bounds.inset(inset, inset);
1034    canvas->drawRect(bounds, paint);
1035    if (desiredColor != SK_ColorBLACK) {
1036        paint.setColor(SK_ColorBLACK);
1037        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1038    }
1039    paint.setColor(desiredColor);
1040    canvas->drawText(c_str, size, left, top, paint);
1041}
1042
1043#define XCLIP_N  8
1044#define YCLIP_N  8
1045
1046void SampleWindow::draw(SkCanvas* canvas) {
1047    // update the animation time
1048    if (!gAnimTimePrev && !gAnimTime) {
1049        // first time make delta be 0
1050        gAnimTime = SkTime::GetMSecs();
1051        gAnimTimePrev = gAnimTime;
1052    } else {
1053        gAnimTimePrev = gAnimTime;
1054        gAnimTime = SkTime::GetMSecs();
1055    }
1056
1057    if (fGesture.isActive()) {
1058        this->updateMatrix();
1059    }
1060
1061    if (fMeasureFPS) {
1062        fMeasureFPS_Time = 0;
1063    }
1064
1065    if (fNClip) {
1066        this->INHERITED::draw(canvas);
1067        SkBitmap orig = capture_bitmap(canvas);
1068
1069        const SkScalar w = this->width();
1070        const SkScalar h = this->height();
1071        const SkScalar cw = w / XCLIP_N;
1072        const SkScalar ch = h / YCLIP_N;
1073        for (int y = 0; y < YCLIP_N; y++) {
1074            SkRect r;
1075            r.fTop = y * ch;
1076            r.fBottom = (y + 1) * ch;
1077            if (y == YCLIP_N - 1) {
1078                r.fBottom = h;
1079            }
1080            for (int x = 0; x < XCLIP_N; x++) {
1081                SkAutoCanvasRestore acr(canvas, true);
1082                r.fLeft = x * cw;
1083                r.fRight = (x + 1) * cw;
1084                if (x == XCLIP_N - 1) {
1085                    r.fRight = w;
1086                }
1087                canvas->clipRect(r);
1088                this->INHERITED::draw(canvas);
1089            }
1090        }
1091
1092        SkBitmap diff;
1093        if (bitmap_diff(canvas, orig, &diff)) {
1094        }
1095    } else {
1096        SkSize tile = this->tileSize();
1097
1098        if (kNo_Tiling == fTilingMode) {
1099            this->INHERITED::draw(canvas); // no looping or surfaces needed
1100        } else {
1101            const int w = SkScalarRoundToInt(tile.width());
1102            const int h = SkScalarRoundToInt(tile.height());
1103            SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
1104            SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
1105            SkCanvas* tileCanvas = surface->getCanvas();
1106
1107            for (SkScalar y = 0; y < height(); y += tile.height()) {
1108                for (SkScalar x = 0; x < width(); x += tile.width()) {
1109                    SkAutoCanvasRestore acr(tileCanvas, true);
1110                    tileCanvas->translate(-x, -y);
1111                    tileCanvas->clear(0);
1112                    this->INHERITED::draw(tileCanvas);
1113                    surface->draw(canvas, x, y, NULL);
1114                }
1115            }
1116
1117            // for drawing the borders between tiles
1118            SkPaint paint;
1119            paint.setColor(0x60FF00FF);
1120            paint.setStyle(SkPaint::kStroke_Style);
1121
1122            for (SkScalar y = 0; y < height(); y += tile.height()) {
1123                for (SkScalar x = 0; x < width(); x += tile.width()) {
1124                    canvas->drawRect(SkRect::MakeXYWH(x, y, tile.width(), tile.height()), paint);
1125                }
1126            }
1127        }
1128    }
1129    if (fShowZoomer && !fSaveToPdf) {
1130        showZoomer(canvas);
1131    }
1132    if (fMagnify && !fSaveToPdf) {
1133        magnify(canvas);
1134    }
1135
1136    if (fMeasureFPS && fMeasureFPS_Time) {
1137        this->updateTitle();
1138        this->postInvalDelay();
1139    }
1140
1141    // do this last
1142    fDevManager->publishCanvas(fDeviceType, canvas, this);
1143}
1144
1145static float clipW = 200;
1146static float clipH = 200;
1147void SampleWindow::magnify(SkCanvas* canvas) {
1148    SkRect r;
1149    int count = canvas->save();
1150
1151    SkMatrix m = canvas->getTotalMatrix();
1152    if (!m.invert(&m)) {
1153        return;
1154    }
1155    SkPoint offset, center;
1156    SkScalar mouseX = fMouseX * SK_Scalar1;
1157    SkScalar mouseY = fMouseY * SK_Scalar1;
1158    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1159    m.mapXY(mouseX, mouseY, &center);
1160
1161    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1162    r.offset(offset.fX, offset.fY);
1163
1164    SkPaint paint;
1165    paint.setColor(0xFF66AAEE);
1166    paint.setStyle(SkPaint::kStroke_Style);
1167    paint.setStrokeWidth(10.f * m.getScaleX());
1168    //lense offset
1169    //canvas->translate(0, -250);
1170    canvas->drawRect(r, paint);
1171    canvas->clipRect(r);
1172
1173    m = canvas->getTotalMatrix();
1174    m.setTranslate(-center.fX, -center.fY);
1175    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1176    m.postTranslate(center.fX, center.fY);
1177    canvas->concat(m);
1178
1179    this->INHERITED::draw(canvas);
1180
1181    canvas->restoreToCount(count);
1182}
1183
1184void SampleWindow::showZoomer(SkCanvas* canvas) {
1185        int count = canvas->save();
1186        canvas->resetMatrix();
1187        // Ensure the mouse position is on screen.
1188        int width = SkScalarRoundToInt(this->width());
1189        int height = SkScalarRoundToInt(this->height());
1190        if (fMouseX >= width) fMouseX = width - 1;
1191        else if (fMouseX < 0) fMouseX = 0;
1192        if (fMouseY >= height) fMouseY = height - 1;
1193        else if (fMouseY < 0) fMouseY = 0;
1194
1195        SkBitmap bitmap = capture_bitmap(canvas);
1196        bitmap.lockPixels();
1197
1198        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1199        int zoomedWidth = (width >> 1) | 1;
1200        int zoomedHeight = (height >> 1) | 1;
1201        SkIRect src;
1202        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1203        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1204        SkRect dest;
1205        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1206        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1207        SkPaint paint;
1208        // Clear the background behind our zoomed in view
1209        paint.setColor(SK_ColorWHITE);
1210        canvas->drawRect(dest, paint);
1211        canvas->drawBitmapRect(bitmap, &src, dest);
1212        paint.setColor(SK_ColorBLACK);
1213        paint.setStyle(SkPaint::kStroke_Style);
1214        // Draw a border around the pixel in the middle
1215        SkRect originalPixel;
1216        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1217        SkMatrix matrix;
1218        SkRect scalarSrc;
1219        scalarSrc.set(src);
1220        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1221        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1222            SkRect pixel;
1223            matrix.mapRect(&pixel, originalPixel);
1224            // TODO Perhaps measure the values and make the outline white if it's "dark"
1225            if (color == SK_ColorBLACK) {
1226                paint.setColor(SK_ColorWHITE);
1227            }
1228            canvas->drawRect(pixel, paint);
1229        }
1230        paint.setColor(SK_ColorBLACK);
1231        // Draw a border around the destination rectangle
1232        canvas->drawRect(dest, paint);
1233        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1234        // Identify the pixel and its color on screen
1235        paint.setTypeface(fTypeface);
1236        paint.setAntiAlias(true);
1237        SkScalar lineHeight = paint.getFontMetrics(NULL);
1238        SkString string;
1239        string.appendf("(%i, %i)", fMouseX, fMouseY);
1240        SkScalar left = dest.fLeft + SkIntToScalar(3);
1241        SkScalar i = SK_Scalar1;
1242        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1243        // Alpha
1244        i += SK_Scalar1;
1245        string.reset();
1246        string.appendf("A: %X", SkColorGetA(color));
1247        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1248        // Red
1249        i += SK_Scalar1;
1250        string.reset();
1251        string.appendf("R: %X", SkColorGetR(color));
1252        paint.setColor(SK_ColorRED);
1253        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1254        // Green
1255        i += SK_Scalar1;
1256        string.reset();
1257        string.appendf("G: %X", SkColorGetG(color));
1258        paint.setColor(SK_ColorGREEN);
1259        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1260        // Blue
1261        i += SK_Scalar1;
1262        string.reset();
1263        string.appendf("B: %X", SkColorGetB(color));
1264        paint.setColor(SK_ColorBLUE);
1265        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1266        canvas->restoreToCount(count);
1267}
1268
1269void SampleWindow::onDraw(SkCanvas* canvas) {
1270}
1271
1272#include "SkColorPriv.h"
1273
1274void SampleWindow::saveToPdf()
1275{
1276    fSaveToPdf = true;
1277    this->inval(NULL);
1278}
1279
1280SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1281    if (fSaveToPdf) {
1282        const SkBitmap bmp = capture_bitmap(canvas);
1283        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1284        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1285                canvas->getTotalMatrix());
1286        fPdfCanvas = new SkCanvas(pdfDevice);
1287        pdfDevice->unref();
1288        canvas = fPdfCanvas;
1289    } else if (kPicture_DeviceType == fDeviceType) {
1290        canvas = fRecorder.beginRecording(9999, 9999, NULL, 0);
1291    } else {
1292#if SK_SUPPORT_GPU
1293        if (kNullGPU_DeviceType != fDeviceType)
1294#endif
1295        {
1296            canvas = this->INHERITED::beforeChildren(canvas);
1297        }
1298    }
1299
1300    if (fUseClip) {
1301        canvas->drawColor(0xFFFF88FF);
1302        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1303    }
1304
1305    return canvas;
1306}
1307
1308#include "SkData.h"
1309void SampleWindow::afterChildren(SkCanvas* orig) {
1310    if (fSaveToPdf) {
1311        fSaveToPdf = false;
1312        if (fShowZoomer) {
1313            showZoomer(fPdfCanvas);
1314        }
1315        SkString name;
1316        name.printf("%s.pdf", this->getTitle());
1317        SkPDFDocument doc;
1318        SkPDFDevice* device = NULL;//static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1319        SkASSERT(false);
1320        doc.appendPage(device);
1321#ifdef SK_BUILD_FOR_ANDROID
1322        name.prepend("/sdcard/");
1323#endif
1324
1325#ifdef SK_BUILD_FOR_IOS
1326        SkDynamicMemoryWStream mstream;
1327        doc.emitPDF(&mstream);
1328        fPDFData = mstream.copyToData();
1329#endif
1330        SkFILEWStream stream(name.c_str());
1331        if (stream.isValid()) {
1332            doc.emitPDF(&stream);
1333            const char* desc = "File saved from Skia SampleApp";
1334            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1335        }
1336
1337        delete fPdfCanvas;
1338        fPdfCanvas = NULL;
1339
1340        // We took over the draw calls in order to create the PDF, so we need
1341        // to redraw.
1342        this->inval(NULL);
1343        return;
1344    }
1345
1346    if (fRequestGrabImage) {
1347        fRequestGrabImage = false;
1348
1349        SkBitmap bmp = capture_bitmap(orig);
1350        if (!bmp.isNull()) {
1351            static int gSampleGrabCounter;
1352            SkString name;
1353            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1354            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1355                                       SkImageEncoder::kPNG_Type, 100);
1356        }
1357    }
1358
1359    if (kPicture_DeviceType == fDeviceType) {
1360        SkAutoTUnref<const SkPicture> picture(fRecorder.endRecording());
1361
1362        if (true) {
1363            this->installDrawFilter(orig);
1364            orig->drawPicture(picture);
1365        } else if (true) {
1366            SkDynamicMemoryWStream ostream;
1367            picture->serialize(&ostream);
1368
1369            SkAutoDataUnref data(ostream.copyToData());
1370            SkMemoryStream istream(data->data(), data->size());
1371            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1372            if (pict.get() != NULL) {
1373                orig->drawPicture(pict.get());
1374            }
1375        } else {
1376            picture->playback(orig);
1377        }
1378    }
1379
1380    // Do this after presentGL and other finishing, rather than in afterChild
1381    if (fMeasureFPS && fMeasureFPS_StartTime) {
1382        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1383    }
1384}
1385
1386void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1387    if (fRotate) {
1388        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1389
1390        SkScalar cx = this->width() / 2;
1391        SkScalar cy = this->height() / 2;
1392        canvas->translate(cx, cy);
1393        canvas->rotate(fRotateAnimTime * 10);
1394        canvas->translate(-cx, -cy);
1395    }
1396
1397    if (fPerspAnim) {
1398        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1399
1400        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1401        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1402        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1403        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1404            t = gAnimPeriod - t;
1405        }
1406        t = 2 * t - gAnimPeriod;
1407        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1408        SkMatrix m;
1409        m.reset();
1410#if 1
1411        m.setPerspY(t);
1412#else
1413        m.setPerspY(SK_Scalar1 / 1000);
1414        m.setSkewX(SkScalarDiv(8, 25));
1415        m.dump();
1416#endif
1417        canvas->concat(m);
1418    }
1419
1420    this->installDrawFilter(canvas);
1421
1422    if (fMeasureFPS) {
1423        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1424            fMeasureFPS_StartTime = SkTime::GetMSecs();
1425        }
1426    } else {
1427        (void)SampleView::SetRepeatDraw(child, 1);
1428    }
1429    if (fPerspAnim || fRotate) {
1430        this->inval(NULL);
1431    }
1432}
1433
1434void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1435    canvas->setDrawFilter(NULL);
1436}
1437
1438static SkColorType gColorTypeCycle[] = {
1439    kUnknown_SkColorType,           // none -> none
1440    kUnknown_SkColorType,           // a8 -> none
1441    kN32_SkColorType,               // 565 -> 8888
1442    kN32_SkColorType,               // 4444 -> 8888
1443    kRGB_565_SkColorType,           // 8888 -> 565
1444    kRGB_565_SkColorType,           // 8888 -> 565
1445    kUnknown_SkColorType,           // index8 -> none
1446};
1447
1448static SkColorType cycle_colortypes(SkColorType c) {
1449    return gColorTypeCycle[c];
1450}
1451
1452void SampleWindow::changeZoomLevel(float delta) {
1453    fZoomLevel += delta;
1454    if (fZoomLevel > 0) {
1455        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1456        fZoomScale = fZoomLevel + SK_Scalar1;
1457    } else if (fZoomLevel < 0) {
1458        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1459        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1460    } else {
1461        fZoomScale = SK_Scalar1;
1462    }
1463    this->updateMatrix();
1464}
1465
1466void SampleWindow::updateMatrix(){
1467    SkMatrix m;
1468    m.reset();
1469    if (fZoomLevel) {
1470        SkPoint center;
1471        //m = this->getLocalMatrix();//.invert(&m);
1472        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1473        SkScalar cx = center.fX;
1474        SkScalar cy = center.fY;
1475
1476        m.setTranslate(-cx, -cy);
1477        m.postScale(fZoomScale, fZoomScale);
1478        m.postTranslate(cx, cy);
1479    }
1480
1481    if (fFlipAxis) {
1482        m.preTranslate(fZoomCenterX, fZoomCenterY);
1483        if (fFlipAxis & kFlipAxis_X) {
1484            m.preScale(-SK_Scalar1, SK_Scalar1);
1485        }
1486        if (fFlipAxis & kFlipAxis_Y) {
1487            m.preScale(SK_Scalar1, -SK_Scalar1);
1488        }
1489        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1490        //canvas->concat(m);
1491    }
1492    // Apply any gesture matrix
1493    m.preConcat(fGesture.localM());
1494    m.preConcat(fGesture.globalM());
1495
1496    this->setLocalMatrix(m);
1497
1498    this->updateTitle();
1499    this->inval(NULL);
1500}
1501bool SampleWindow::previousSample() {
1502    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1503    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1504                                     fTransitionPrev));
1505    return true;
1506}
1507
1508bool SampleWindow::nextSample() {
1509    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1510    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1511                                     fTransitionNext));
1512    return true;
1513}
1514
1515bool SampleWindow::goToSample(int i) {
1516    fCurrIndex = (i) % fSamples.count();
1517    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1518    return true;
1519}
1520
1521SkString SampleWindow::getSampleTitle(int i) {
1522    return ::getSampleTitle(fSamples[i]);
1523}
1524
1525int SampleWindow::sampleCount() {
1526    return fSamples.count();
1527}
1528
1529void SampleWindow::showOverview() {
1530    this->loadView(create_transition(curr_view(this),
1531                                     create_overview(fSamples.count(), fSamples.begin()),
1532                                     4));
1533}
1534
1535void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1536    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fSubpixelState,
1537                                              fHintingState, fFilterLevelIndex))->unref();
1538}
1539
1540void SampleWindow::postAnimatingEvent() {
1541    if (fAnimating) {
1542        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1543    }
1544}
1545
1546bool SampleWindow::onEvent(const SkEvent& evt) {
1547    if (evt.isType(gUpdateWindowTitleEvtName)) {
1548        this->updateTitle();
1549        return true;
1550    }
1551    if (evt.isType(ANIMATING_EVENTTYPE)) {
1552        if (fAnimating) {
1553            this->nextSample();
1554            this->postAnimatingEvent();
1555        }
1556        return true;
1557    }
1558    if (evt.isType("replace-transition-view")) {
1559        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1560        return true;
1561    }
1562    if (evt.isType("set-curr-index")) {
1563        this->goToSample(evt.getFast32());
1564        return true;
1565    }
1566    if (isInvalEvent(evt)) {
1567        this->inval(NULL);
1568        return true;
1569    }
1570    int selected = -1;
1571    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1572        this->setDeviceType((DeviceType)selected);
1573        return true;
1574    }
1575    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1576#ifdef PIPE_NET
1577        if (!fPipeState != SkOSMenu::kOnState)
1578            gServer.disconnectAll();
1579#endif
1580        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1581        this->updateTitle();
1582        this->inval(NULL);
1583        return true;
1584    }
1585    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1586        this->toggleSlideshow();
1587        return true;
1588    }
1589    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1590        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1591        SkOSMenu::FindListIndex(evt, "FilterLevel", &fFilterLevelIndex) ||
1592        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1593        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1594        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1595        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1596        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1597        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1598        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1599        this->inval(NULL);
1600        this->updateTitle();
1601        return true;
1602    }
1603    if (SkOSMenu::FindListIndex(evt, "Tiling", &fTilingMode)) {
1604        if (SampleView::IsSampleView(curr_view(this))) {
1605            ((SampleView*)curr_view(this))->onTileSizeChanged(this->tileSize());
1606        }
1607        this->inval(NULL);
1608        this->updateTitle();
1609        return true;
1610    }
1611    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1612        fFlipAxis ^= kFlipAxis_X;
1613        this->updateMatrix();
1614        return true;
1615    }
1616    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1617        fFlipAxis ^= kFlipAxis_Y;
1618        this->updateMatrix();
1619        return true;
1620    }
1621    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1622        this->saveToPdf();
1623        return true;
1624    }
1625    return this->INHERITED::onEvent(evt);
1626}
1627
1628bool SampleWindow::onQuery(SkEvent* query) {
1629    if (query->isType("get-slide-count")) {
1630        query->setFast32(fSamples.count());
1631        return true;
1632    }
1633    if (query->isType("get-slide-title")) {
1634        SkView* view = (*fSamples[query->getFast32()])();
1635        SkEvent evt(gTitleEvtName);
1636        if (view->doQuery(&evt)) {
1637            query->setString("title", evt.findString(gTitleEvtName));
1638        }
1639        SkSafeUnref(view);
1640        return true;
1641    }
1642    if (query->isType("use-fast-text")) {
1643        SkEvent evt(gFastTextEvtName);
1644        return curr_view(this)->doQuery(&evt);
1645    }
1646    if (query->isType("ignore-window-bitmap")) {
1647        query->setFast32(this->getGrContext() != NULL);
1648        return true;
1649    }
1650    return this->INHERITED::onQuery(query);
1651}
1652
1653#if 0 // UNUSED
1654static void cleanup_for_filename(SkString* name) {
1655    char* str = name->writable_str();
1656    for (size_t i = 0; i < name->size(); i++) {
1657        switch (str[i]) {
1658            case ':': str[i] = '-'; break;
1659            case '/': str[i] = '-'; break;
1660            case ' ': str[i] = '_'; break;
1661            default: break;
1662        }
1663    }
1664}
1665#endif
1666
1667DECLARE_bool(portableFonts);
1668
1669bool SampleWindow::onHandleChar(SkUnichar uni) {
1670    {
1671        SkView* view = curr_view(this);
1672        if (view) {
1673            SkEvent evt(gCharEvtName);
1674            evt.setFast32(uni);
1675            if (view->doQuery(&evt)) {
1676                return true;
1677            }
1678        }
1679    }
1680
1681    int dx = 0xFF;
1682    int dy = 0xFF;
1683
1684    switch (uni) {
1685        case '5': dx =  0; dy =  0; break;
1686        case '8': dx =  0; dy = -1; break;
1687        case '6': dx =  1; dy =  0; break;
1688        case '2': dx =  0; dy =  1; break;
1689        case '4': dx = -1; dy =  0; break;
1690        case '7': dx = -1; dy = -1; break;
1691        case '9': dx =  1; dy = -1; break;
1692        case '3': dx =  1; dy =  1; break;
1693        case '1': dx = -1; dy =  1; break;
1694
1695        default:
1696            break;
1697    }
1698
1699    if (0xFF != dx && 0xFF != dy) {
1700        if ((dx | dy) == 0) {
1701            fScrollTestX = fScrollTestY = 0;
1702        } else {
1703            fScrollTestX += dx;
1704            fScrollTestY += dy;
1705        }
1706        this->inval(NULL);
1707        return true;
1708    }
1709
1710    switch (uni) {
1711        case 'B':
1712            post_event_to_sink(SkNEW_ARGS(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(SkNEW_ARGS(SkEvent, (gUpdateWindowTitleEvtName)), this);
1716            this->inval(NULL);
1717            break;
1718        case 'f':
1719            // only
1720            toggleFPS();
1721            break;
1722        case 'F':
1723            FLAGS_portableFonts ^= true;
1724            this->inval(NULL);
1725            break;
1726        case 'g':
1727            fRequestGrabImage = true;
1728            this->inval(NULL);
1729            break;
1730        case 'G':
1731            gShowGMBounds = !gShowGMBounds;
1732            post_event_to_sink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1733                            curr_view(this));
1734            this->inval(NULL);
1735            break;
1736        case 'i':
1737            this->zoomIn();
1738            break;
1739        case 'o':
1740            this->zoomOut();
1741            break;
1742        case 'r':
1743            fRotate = !fRotate;
1744            fRotateAnimTime = 0;
1745            this->inval(NULL);
1746            this->updateTitle();
1747            return true;
1748        case 'k':
1749            fPerspAnim = !fPerspAnim;
1750            this->inval(NULL);
1751            this->updateTitle();
1752            return true;
1753#if SK_SUPPORT_GPU
1754        case '\\':
1755            this->setDeviceType(kNullGPU_DeviceType);
1756            this->inval(NULL);
1757            this->updateTitle();
1758            return true;
1759        case 'p':
1760            {
1761                GrContext* grContext = this->getGrContext();
1762                if (grContext) {
1763                    size_t cacheBytes;
1764                    grContext->getResourceCacheUsage(NULL, &cacheBytes);
1765                    grContext->freeGpuResources();
1766                    SkDebugf("Purged %d bytes from the GPU resource cache.\n", cacheBytes);
1767                }
1768            }
1769            return true;
1770#endif
1771        default:
1772            break;
1773    }
1774
1775    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1776        this->onUpdateMenu(fAppMenu);
1777        this->onUpdateMenu(fSlideMenu);
1778        return true;
1779    }
1780    return this->INHERITED::onHandleChar(uni);
1781}
1782
1783void SampleWindow::setDeviceType(DeviceType type) {
1784    if (type == fDeviceType)
1785        return;
1786
1787    fDevManager->tearDownBackend(this);
1788
1789    fDeviceType = type;
1790
1791    fDevManager->setUpBackend(this, fMSAASampleCount);
1792
1793    this->updateTitle();
1794    this->inval(NULL);
1795}
1796
1797void SampleWindow::toggleSlideshow() {
1798    fAnimating = !fAnimating;
1799    this->postAnimatingEvent();
1800    this->updateTitle();
1801}
1802
1803void SampleWindow::toggleRendering() {
1804    this->setDeviceType(cycle_devicetype(fDeviceType));
1805    this->updateTitle();
1806    this->inval(NULL);
1807}
1808
1809void SampleWindow::toggleFPS() {
1810    fMeasureFPS = !fMeasureFPS;
1811    this->updateTitle();
1812    this->inval(NULL);
1813}
1814
1815#include "SkDumpCanvas.h"
1816
1817bool SampleWindow::onHandleKey(SkKey key) {
1818    {
1819        SkView* view = curr_view(this);
1820        if (view) {
1821            SkEvent evt(gKeyEvtName);
1822            evt.setFast32(key);
1823            if (view->doQuery(&evt)) {
1824                return true;
1825            }
1826        }
1827    }
1828    switch (key) {
1829        case kRight_SkKey:
1830            if (this->nextSample()) {
1831                return true;
1832            }
1833            break;
1834        case kLeft_SkKey:
1835            if (this->previousSample()) {
1836                return true;
1837            }
1838            return true;
1839        case kUp_SkKey:
1840            if (USE_ARROWS_FOR_ZOOM) {
1841                this->changeZoomLevel(1.f / 32.f);
1842            } else {
1843                fNClip = !fNClip;
1844                this->inval(NULL);
1845                this->updateTitle();
1846            }
1847            return true;
1848        case kDown_SkKey:
1849            if (USE_ARROWS_FOR_ZOOM) {
1850                this->changeZoomLevel(-1.f / 32.f);
1851            } else {
1852                this->setColorType(cycle_colortypes(this->getBitmap().colorType()));
1853                this->updateTitle();
1854            }
1855            return true;
1856        case kOK_SkKey: {
1857            SkString title;
1858            if (curr_title(this, &title)) {
1859                writeTitleToPrefs(title.c_str());
1860            }
1861            return true;
1862        }
1863        case kBack_SkKey:
1864            this->showOverview();
1865            return true;
1866        default:
1867            break;
1868    }
1869    return this->INHERITED::onHandleKey(key);
1870}
1871
1872///////////////////////////////////////////////////////////////////////////////
1873
1874static const char gGestureClickType[] = "GestureClickType";
1875
1876bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1877        void* owner, unsigned modi) {
1878    if (Click::kMoved_State == state) {
1879        updatePointer(x, y);
1880    }
1881    int w = SkScalarRoundToInt(this->width());
1882    int h = SkScalarRoundToInt(this->height());
1883
1884    // check for the resize-box
1885    if (w - x < 16 && h - y < 16) {
1886        return false;   // let the OS handle the click
1887    }
1888    else if (fMagnify) {
1889        //it's only necessary to update the drawing if there's a click
1890        this->inval(NULL);
1891        return false; //prevent dragging while magnify is enabled
1892    } else {
1893        // capture control+option, and trigger debugger
1894        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1895            if (Click::kDown_State == state) {
1896                SkEvent evt("debug-hit-test");
1897                evt.setS32("debug-hit-test-x", x);
1898                evt.setS32("debug-hit-test-y", y);
1899                curr_view(this)->doEvent(evt);
1900            }
1901            return true;
1902        } else {
1903            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
1904        }
1905    }
1906}
1907
1908class GestureClick : public SkView::Click {
1909public:
1910    GestureClick(SkView* target) : SkView::Click(target) {
1911        this->setType(gGestureClickType);
1912    }
1913
1914    static bool IsGesture(Click* click) {
1915        return click->isType(gGestureClickType);
1916    }
1917};
1918
1919SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
1920                                                unsigned modi) {
1921    return new GestureClick(this);
1922}
1923
1924bool SampleWindow::onClick(Click* click) {
1925    if (GestureClick::IsGesture(click)) {
1926        float x = static_cast<float>(click->fICurr.fX);
1927        float y = static_cast<float>(click->fICurr.fY);
1928
1929        switch (click->fState) {
1930            case SkView::Click::kDown_State:
1931                fGesture.touchBegin(click->fOwner, x, y);
1932                break;
1933            case SkView::Click::kMoved_State:
1934                fGesture.touchMoved(click->fOwner, x, y);
1935                this->updateMatrix();
1936                break;
1937            case SkView::Click::kUp_State:
1938                fGesture.touchEnd(click->fOwner);
1939                this->updateMatrix();
1940                break;
1941        }
1942        return true;
1943    }
1944    return false;
1945}
1946
1947///////////////////////////////////////////////////////////////////////////////
1948
1949void SampleWindow::loadView(SkView* view) {
1950    SkView::F2BIter iter(this);
1951    SkView* prev = iter.next();
1952    if (prev) {
1953        prev->detachFromParent();
1954    }
1955
1956    view->setVisibleP(true);
1957    view->setClipToBounds(false);
1958    this->attachChildToFront(view)->unref();
1959    view->setSize(this->width(), this->height());
1960
1961    //repopulate the slide menu when a view is loaded
1962    fSlideMenu->reset();
1963
1964    (void)SampleView::SetUsePipe(view, fPipeState);
1965    if (SampleView::IsSampleView(view)) {
1966        SampleView* sampleView = (SampleView*)view;
1967        sampleView->requestMenu(fSlideMenu);
1968        sampleView->onTileSizeChanged(this->tileSize());
1969    }
1970    this->onUpdateMenu(fSlideMenu);
1971    this->updateTitle();
1972}
1973
1974static const char* gDeviceTypePrefix[] = {
1975    "raster: ",
1976    "picture: ",
1977#if SK_SUPPORT_GPU
1978    "opengl: ",
1979#if SK_ANGLE
1980    "angle: ",
1981#endif // SK_ANGLE
1982    "null-gl: "
1983#endif // SK_SUPPORT_GPU
1984};
1985SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
1986                  array_size_mismatch);
1987
1988static const char* trystate_str(SkOSMenu::TriState state,
1989                                const char trueStr[], const char falseStr[]) {
1990    if (SkOSMenu::kOnState == state) {
1991        return trueStr;
1992    } else if (SkOSMenu::kOffState == state) {
1993        return falseStr;
1994    }
1995    return NULL;
1996}
1997
1998void SampleWindow::updateTitle() {
1999    SkView* view = curr_view(this);
2000
2001    SkString title;
2002    if (!curr_title(this, &title)) {
2003        title.set("<unknown>");
2004    }
2005
2006    title.prepend(gDeviceTypePrefix[fDeviceType]);
2007
2008    title.prepend(" ");
2009    title.prepend(sk_tool_utils::colortype_name(this->getBitmap().colorType()));
2010
2011    if (fTilingMode != kNo_Tiling) {
2012        title.prependf("<T: %s> ", gTilingInfo[fTilingMode].label);
2013    }
2014    if (fAnimating) {
2015        title.prepend("<A> ");
2016    }
2017    if (fRotate) {
2018        title.prepend("<R> ");
2019    }
2020    if (fNClip) {
2021        title.prepend("<C> ");
2022    }
2023    if (fPerspAnim) {
2024        title.prepend("<K> ");
2025    }
2026
2027    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2028    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2029    title.prepend(gFilterLevelStates[fFilterLevelIndex].fLabel);
2030    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2031    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2032    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2033    title.prepend(gHintingStates[fHintingState].label);
2034
2035    if (fZoomLevel) {
2036        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2037    }
2038
2039    if (fMeasureFPS) {
2040        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2041    }
2042    if (SampleView::IsSampleView(view)) {
2043        switch (fPipeState) {
2044            case SkOSMenu::kOnState:
2045                title.prepend("<Pipe> ");
2046                break;
2047            case SkOSMenu::kMixedState:
2048                title.prepend("<Tiled Pipe> ");
2049                break;
2050
2051            default:
2052                break;
2053        }
2054        title.prepend("! ");
2055    }
2056
2057#if SK_SUPPORT_GPU
2058    if (IsGpuDeviceType(fDeviceType) &&
2059        fDevManager &&
2060        fDevManager->getGrRenderTarget() &&
2061        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2062        title.appendf(" [MSAA: %d]",
2063                       fDevManager->getGrRenderTarget()->numSamples());
2064    }
2065#endif
2066
2067    this->setTitle(title.c_str());
2068}
2069
2070void SampleWindow::onSizeChange() {
2071    this->INHERITED::onSizeChange();
2072
2073    SkView::F2BIter iter(this);
2074    SkView* view = iter.next();
2075    view->setSize(this->width(), this->height());
2076
2077    // rebuild our clippath
2078    {
2079        const SkScalar W = this->width();
2080        const SkScalar H = this->height();
2081
2082        fClipPath.reset();
2083#if 0
2084        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2085            SkRect r;
2086            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2087            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2088                fClipPath.addRect(r);
2089        }
2090#else
2091        SkRect r;
2092        r.set(0, 0, W, H);
2093        fClipPath.addRect(r, SkPath::kCCW_Direction);
2094        r.set(W/4, H/4, W*3/4, H*3/4);
2095        fClipPath.addRect(r, SkPath::kCW_Direction);
2096#endif
2097    }
2098
2099    fZoomCenterX = SkScalarHalf(this->width());
2100    fZoomCenterY = SkScalarHalf(this->height());
2101
2102#ifdef SK_BUILD_FOR_ANDROID
2103    // FIXME: The first draw after a size change does not work on Android, so
2104    // we post an invalidate.
2105    this->postInvalDelay();
2106#endif
2107    this->updateTitle();    // to refresh our config
2108    fDevManager->windowSizeChanged(this);
2109
2110    if (fTilingMode != kNo_Tiling && SampleView::IsSampleView(view)) {
2111        ((SampleView*)view)->onTileSizeChanged(this->tileSize());
2112    }
2113}
2114
2115///////////////////////////////////////////////////////////////////////////////
2116
2117static const char is_sample_view_tag[] = "sample-is-sample-view";
2118static const char repeat_count_tag[] = "sample-set-repeat-count";
2119static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2120
2121bool SampleView::IsSampleView(SkView* view) {
2122    SkEvent evt(is_sample_view_tag);
2123    return view->doQuery(&evt);
2124}
2125
2126bool SampleView::SetRepeatDraw(SkView* view, int count) {
2127    SkEvent evt(repeat_count_tag);
2128    evt.setFast32(count);
2129    return view->doEvent(evt);
2130}
2131
2132bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2133    SkEvent evt;
2134    evt.setS32(set_use_pipe_tag, state);
2135    return view->doEvent(evt);
2136}
2137
2138bool SampleView::onEvent(const SkEvent& evt) {
2139    if (evt.isType(repeat_count_tag)) {
2140        fRepeatCount = evt.getFast32();
2141        return true;
2142    }
2143
2144    int32_t pipeHolder;
2145    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2146        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2147        return true;
2148    }
2149
2150    return this->INHERITED::onEvent(evt);
2151}
2152
2153bool SampleView::onQuery(SkEvent* evt) {
2154    if (evt->isType(is_sample_view_tag)) {
2155        return true;
2156    }
2157    return this->INHERITED::onQuery(evt);
2158}
2159
2160
2161class SimplePC : public SkGPipeController {
2162public:
2163    SimplePC(SkCanvas* target);
2164    ~SimplePC();
2165
2166    virtual void* requestBlock(size_t minRequest, size_t* actual);
2167    virtual void notifyWritten(size_t bytes);
2168
2169private:
2170    SkGPipeReader   fReader;
2171    void*           fBlock;
2172    size_t          fBlockSize;
2173    size_t          fBytesWritten;
2174    int             fAtomsWritten;
2175    SkGPipeReader::Status   fStatus;
2176
2177    size_t        fTotalWritten;
2178};
2179
2180SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2181    fBlock = NULL;
2182    fBlockSize = fBytesWritten = 0;
2183    fStatus = SkGPipeReader::kDone_Status;
2184    fTotalWritten = 0;
2185    fAtomsWritten = 0;
2186    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2187}
2188
2189SimplePC::~SimplePC() {
2190//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2191    if (fTotalWritten) {
2192        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2193                 fAtomsWritten, fStatus);
2194#ifdef  PIPE_FILE
2195        //File is open in append mode
2196        FILE* f = fopen(FILE_PATH, "ab");
2197        SkASSERT(f != NULL);
2198        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2199        fclose(f);
2200#endif
2201#ifdef PIPE_NET
2202        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2203            gServer.acceptConnections();
2204            gServer.writePacket(fBlock, fTotalWritten);
2205        }
2206#endif
2207    }
2208    sk_free(fBlock);
2209}
2210
2211void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2212    sk_free(fBlock);
2213
2214    fBlockSize = minRequest * 4;
2215    fBlock = sk_malloc_throw(fBlockSize);
2216    fBytesWritten = 0;
2217    *actual = fBlockSize;
2218    return fBlock;
2219}
2220
2221void SimplePC::notifyWritten(size_t bytes) {
2222    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2223    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2224    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2225    fBytesWritten += bytes;
2226    fTotalWritten += bytes;
2227
2228    fAtomsWritten += 1;
2229}
2230
2231void SampleView::draw(SkCanvas* canvas) {
2232    if (SkOSMenu::kOffState == fPipeState) {
2233        this->INHERITED::draw(canvas);
2234    } else {
2235        SkGPipeWriter writer;
2236        SimplePC controller(canvas);
2237        SkBitmap bitmap = capture_bitmap(canvas);
2238        TiledPipeController tc(bitmap, &SkImageDecoder::DecodeMemory, &canvas->getTotalMatrix());
2239        SkGPipeController* pc;
2240        if (SkOSMenu::kMixedState == fPipeState) {
2241            pc = &tc;
2242        } else {
2243            pc = &controller;
2244        }
2245        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2246
2247        canvas = writer.startRecording(pc, flags);
2248        //Must draw before controller goes out of scope and sends data
2249        this->INHERITED::draw(canvas);
2250        //explicitly end recording to ensure writer is flushed before the memory
2251        //is freed in the deconstructor of the controller
2252        writer.endRecording();
2253    }
2254}
2255
2256void SampleView::onDraw(SkCanvas* canvas) {
2257    this->onDrawBackground(canvas);
2258
2259    for (int i = 0; i < fRepeatCount; i++) {
2260        SkAutoCanvasRestore acr(canvas, true);
2261        this->onDrawContent(canvas);
2262    }
2263}
2264
2265void SampleView::onDrawBackground(SkCanvas* canvas) {
2266    canvas->drawColor(fBGColor);
2267}
2268
2269///////////////////////////////////////////////////////////////////////////////
2270
2271template <typename T> void SkTBSort(T array[], int count) {
2272    for (int i = 1; i < count - 1; i++) {
2273        bool didSwap = false;
2274        for (int j = count - 1; j > i; --j) {
2275            if (array[j] < array[j-1]) {
2276                T tmp(array[j-1]);
2277                array[j-1] = array[j];
2278                array[j] = tmp;
2279                didSwap = true;
2280            }
2281        }
2282        if (!didSwap) {
2283            break;
2284        }
2285    }
2286
2287    for (int k = 0; k < count - 1; k++) {
2288        SkASSERT(!(array[k+1] < array[k]));
2289    }
2290}
2291
2292#include "SkRandom.h"
2293
2294static void rand_rect(SkIRect* rect, SkRandom& rand) {
2295    int bits = 8;
2296    int shift = 32 - bits;
2297    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2298              rand.nextU() >> shift, rand.nextU() >> shift);
2299    rect->sort();
2300}
2301
2302static void dumpRect(const SkIRect& r) {
2303    SkDebugf(" { %d, %d, %d, %d },\n",
2304             r.fLeft, r.fTop,
2305             r.fRight, r.fBottom);
2306}
2307
2308static void test_rects(const SkIRect rect[], int count) {
2309    SkRegion rgn0, rgn1;
2310
2311    for (int i = 0; i < count; i++) {
2312        rgn0.op(rect[i], SkRegion::kUnion_Op);
2313     //   dumpRect(rect[i]);
2314    }
2315    rgn1.setRects(rect, count);
2316
2317    if (rgn0 != rgn1) {
2318        SkDebugf("\n");
2319        for (int i = 0; i < count; i++) {
2320            dumpRect(rect[i]);
2321        }
2322        SkDebugf("\n");
2323    }
2324}
2325
2326static void test() {
2327    size_t i;
2328
2329    const SkIRect r0[] = {
2330        { 0, 0, 1, 1 },
2331        { 2, 2, 3, 3 },
2332    };
2333    const SkIRect r1[] = {
2334        { 0, 0, 1, 3 },
2335        { 1, 1, 2, 2 },
2336        { 2, 0, 3, 3 },
2337    };
2338    const SkIRect r2[] = {
2339        { 0, 0, 1, 2 },
2340        { 2, 1, 3, 3 },
2341        { 4, 0, 5, 1 },
2342        { 6, 0, 7, 4 },
2343    };
2344
2345    static const struct {
2346        const SkIRect* fRects;
2347        int            fCount;
2348    } gRecs[] = {
2349        { r0, SK_ARRAY_COUNT(r0) },
2350        { r1, SK_ARRAY_COUNT(r1) },
2351        { r2, SK_ARRAY_COUNT(r2) },
2352    };
2353
2354    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2355        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2356    }
2357
2358    SkRandom rand;
2359    for (i = 0; i < 10000; i++) {
2360        SkRegion rgn0, rgn1;
2361
2362        const int N = 8;
2363        SkIRect rect[N];
2364        for (int j = 0; j < N; j++) {
2365            rand_rect(&rect[j], rand);
2366        }
2367        test_rects(rect, N);
2368    }
2369}
2370
2371// FIXME: this should be in a header
2372SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2373SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2374    if (false) { // avoid bit rot, suppress warning
2375        test();
2376    }
2377    return new SampleWindow(hwnd, argc, argv, NULL);
2378}
2379
2380// FIXME: this should be in a header
2381void get_preferred_size(int* x, int* y, int* width, int* height);
2382void get_preferred_size(int* x, int* y, int* width, int* height) {
2383    *x = 10;
2384    *y = 50;
2385    *width = 640;
2386    *height = 480;
2387}
2388
2389#ifdef SK_BUILD_FOR_IOS
2390IOS_launch_type set_cmd_line_args(int , char *[], const char* resourceDir) {
2391    SetResourcePath(resourceDir);
2392    return kApplication__iOSLaunchType;
2393}
2394#endif
2395
2396void application_init() {
2397//    setenv("ANDROID_ROOT", "../../../data", 0);
2398#ifdef SK_BUILD_FOR_MAC
2399    setenv("ANDROID_ROOT", "/android/device/data", 0);
2400#endif
2401    SkGraphics::Init();
2402    SkEvent::Init();
2403}
2404
2405void application_term() {
2406    SkEvent::Term();
2407    SkGraphics::Term();
2408}
2409