SampleApp.cpp revision e24ad23ae67ffcb0dc545b7e426cf08d102e0868 
1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include "SampleApp.h"
8
9#include "SkData.h"
10#include "SkCanvas.h"
11#include "SkDevice.h"
12#include "SkGraphics.h"
13#include "SkImageDecoder.h"
14#include "SkImageEncoder.h"
15#include "SkPaint.h"
16#include "SkPicture.h"
17#include "SkStream.h"
18#include "SkTSort.h"
19#include "SkTime.h"
20#include "SkWindow.h"
21
22#include "SampleCode.h"
23#include "SkTypeface.h"
24
25#if SK_SUPPORT_GPU
26#include "gl/GrGLInterface.h"
27#include "gl/GrGLUtil.h"
28#include "GrRenderTarget.h"
29#include "GrContext.h"
30#include "SkGpuDevice.h"
31#else
32class GrContext;
33#endif
34
35#include "SkOSFile.h"
36#include "SkPDFDevice.h"
37#include "SkPDFDocument.h"
38#include "SkStream.h"
39
40#include "SkGPipe.h"
41#include "SamplePipeControllers.h"
42#include "OverView.h"
43#include "TransitionView.h"
44
45extern SampleView* CreateSamplePictFileView(const char filename[]);
46
47class PictFileFactory : public SkViewFactory {
48    SkString fFilename;
49public:
50    PictFileFactory(const SkString& filename) : fFilename(filename) {}
51    virtual SkView* operator() () const SK_OVERRIDE {
52        return CreateSamplePictFileView(fFilename.c_str());
53    }
54};
55
56#ifdef SAMPLE_PDF_FILE_VIEWER
57extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
58
59class PdfFileViewerFactory : public SkViewFactory {
60    SkString fFilename;
61public:
62    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
63    virtual SkView* operator() () const SK_OVERRIDE {
64        return CreateSamplePdfFileViewer(fFilename.c_str());
65    }
66};
67#endif  // SAMPLE_PDF_FILE_VIEWER
68
69#define PIPE_FILEx
70#ifdef  PIPE_FILE
71#define FILE_PATH "/path/to/drawing.data"
72#endif
73
74#define PIPE_NETx
75#ifdef  PIPE_NET
76#include "SkSockets.h"
77SkTCPServer gServer;
78#endif
79
80#define USE_ARROWS_FOR_ZOOM true
81
82#if SK_ANGLE
83//#define DEFAULT_TO_ANGLE 1
84#else
85#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
86#endif
87
88#define ANIMATING_EVENTTYPE "nextSample"
89#define ANIMATING_DELAY     250
90
91#ifdef SK_DEBUG
92    #define FPS_REPEAT_MULTIPLIER   1
93#else
94    #define FPS_REPEAT_MULTIPLIER   10
95#endif
96#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
97
98static SampleWindow* gSampleWindow;
99
100static bool gShowGMBounds;
101
102static void post_event_to_sink(SkEvent* evt, SkEventSink* sink) {
103    evt->setTargetID(sink->getSinkID())->post();
104}
105
106///////////////////////////////////////////////////////////////////////////////
107
108static const char* skip_until(const char* str, const char* skip) {
109    if (!str) {
110        return NULL;
111    }
112    return strstr(str, skip);
113}
114
115static const char* skip_past(const char* str, const char* skip) {
116    const char* found = skip_until(str, skip);
117    if (!found) {
118        return NULL;
119    }
120    return found + strlen(skip);
121}
122
123static const char* gPrefFileName = "sampleapp_prefs.txt";
124
125static bool readTitleFromPrefs(SkString* title) {
126    SkFILEStream stream(gPrefFileName);
127    if (!stream.isValid()) {
128        return false;
129    }
130
131    size_t len = stream.getLength();
132    SkString data(len);
133    stream.read(data.writable_str(), len);
134    const char* s = data.c_str();
135
136    s = skip_past(s, "curr-slide-title");
137    s = skip_past(s, "=");
138    s = skip_past(s, "\"");
139    const char* stop = skip_until(s, "\"");
140    if (stop > s) {
141        title->set(s, stop - s);
142        return true;
143    }
144    return false;
145}
146
147static void writeTitleToPrefs(const char* title) {
148    SkFILEWStream stream(gPrefFileName);
149    SkString data;
150    data.printf("curr-slide-title = \"%s\"\n", title);
151    stream.write(data.c_str(), data.size());
152}
153
154///////////////////////////////////////////////////////////////////////////////
155
156class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
157public:
158
159    DefaultDeviceManager() {
160#if SK_SUPPORT_GPU
161        fCurContext = NULL;
162        fCurIntf = NULL;
163        fCurRenderTarget = NULL;
164        fMSAASampleCount = 0;
165#endif
166        fBackend = kNone_BackEndType;
167    }
168
169    virtual ~DefaultDeviceManager() {
170#if SK_SUPPORT_GPU
171        SkSafeUnref(fCurContext);
172        SkSafeUnref(fCurIntf);
173        SkSafeUnref(fCurRenderTarget);
174#endif
175    }
176
177    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
178        SkASSERT(kNone_BackEndType == fBackend);
179
180        fBackend = kNone_BackEndType;
181
182#if SK_SUPPORT_GPU
183        switch (win->getDeviceType()) {
184            case kRaster_DeviceType:
185                // fallthrough
186            case kPicture_DeviceType:
187                // fallthrough
188            case kGPU_DeviceType:
189                // fallthrough
190            case kNullGPU_DeviceType:
191                // all these guys use the native backend
192                fBackend = kNativeGL_BackEndType;
193                break;
194#if SK_ANGLE
195            case kANGLE_DeviceType:
196                // ANGLE is really the only odd man out
197                fBackend = kANGLE_BackEndType;
198                break;
199#endif // SK_ANGLE
200            default:
201                SkASSERT(false);
202                break;
203        }
204        AttachmentInfo attachmentInfo;
205        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
206        if (!result) {
207            SkDebugf("Failed to initialize GL");
208            return;
209        }
210        fMSAASampleCount = msaaSampleCount;
211
212        SkASSERT(NULL == fCurIntf);
213        SkAutoTUnref<const GrGLInterface> glInterface;
214        switch (win->getDeviceType()) {
215            case kRaster_DeviceType:
216                // fallthrough
217            case kPicture_DeviceType:
218                // fallthrough
219            case kGPU_DeviceType:
220                // all these guys use the native interface
221                glInterface.reset(GrGLCreateNativeInterface());
222                break;
223#if SK_ANGLE
224            case kANGLE_DeviceType:
225                glInterface.reset(GrGLCreateANGLEInterface());
226                break;
227#endif // SK_ANGLE
228            case kNullGPU_DeviceType:
229                glInterface.reset(GrGLCreateNullInterface());
230                break;
231            default:
232                SkASSERT(false);
233                break;
234        }
235
236        // Currently SampleApp does not use NVPR. TODO: Provide an NVPR device type that is skipped
237        // when the driver doesn't support NVPR.
238        fCurIntf = GrGLInterfaceRemoveNVPR(glInterface.get());
239
240        SkASSERT(NULL == fCurContext);
241        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
242
243        if (NULL == fCurContext || NULL == fCurIntf) {
244            // We need some context and interface to see results
245            SkSafeUnref(fCurContext);
246            SkSafeUnref(fCurIntf);
247            fCurContext = NULL;
248            fCurIntf = NULL;
249            SkDebugf("Failed to setup 3D");
250
251            win->detach();
252        }
253#endif // SK_SUPPORT_GPU
254        // call windowSizeChanged to create the render target
255        this->windowSizeChanged(win);
256    }
257
258    virtual void tearDownBackend(SampleWindow *win) {
259#if SK_SUPPORT_GPU
260        SkSafeUnref(fCurContext);
261        fCurContext = NULL;
262
263        SkSafeUnref(fCurIntf);
264        fCurIntf = NULL;
265
266        SkSafeUnref(fCurRenderTarget);
267        fCurRenderTarget = NULL;
268#endif
269        win->detach();
270        fBackend = kNone_BackEndType;
271    }
272
273    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
274                                   SampleWindow* win) {
275#if SK_SUPPORT_GPU
276        if (IsGpuDeviceType(dType) && NULL != fCurContext) {
277            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
278            return new SkCanvas(device);
279        } else
280#endif
281        {
282            return NULL;
283        }
284    }
285
286    virtual void publishCanvas(SampleWindow::DeviceType dType,
287                               SkCanvas* canvas,
288                               SampleWindow* win) {
289#if SK_SUPPORT_GPU
290        if (fCurContext) {
291            // in case we have queued drawing calls
292            fCurContext->flush();
293
294            if (!IsGpuDeviceType(dType)) {
295                // need to send the raster bits to the (gpu) window
296                fCurContext->setRenderTarget(fCurRenderTarget);
297                const SkBitmap& bm = win->getBitmap();
298                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
299                                             kSkia8888_GrPixelConfig,
300                                             bm.getPixels(),
301                                             bm.rowBytes());
302            }
303        }
304#endif
305
306        win->present();
307    }
308
309    virtual void windowSizeChanged(SampleWindow* win) {
310#if SK_SUPPORT_GPU
311        if (fCurContext) {
312            AttachmentInfo attachmentInfo;
313            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
314
315            GrBackendRenderTargetDesc desc;
316            desc.fWidth = SkScalarRoundToInt(win->width());
317            desc.fHeight = SkScalarRoundToInt(win->height());
318            desc.fConfig = kSkia8888_GrPixelConfig;
319            desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
320            desc.fSampleCnt = attachmentInfo.fSampleCount;
321            desc.fStencilBits = attachmentInfo.fStencilBits;
322            GrGLint buffer;
323            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
324            desc.fRenderTargetHandle = buffer;
325
326            SkSafeUnref(fCurRenderTarget);
327            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
328        }
329#endif
330    }
331
332    virtual GrContext* getGrContext() {
333#if SK_SUPPORT_GPU
334        return fCurContext;
335#else
336        return NULL;
337#endif
338    }
339
340    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
341#if SK_SUPPORT_GPU
342        return fCurRenderTarget;
343#else
344        return NULL;
345#endif
346    }
347
348private:
349
350#if SK_SUPPORT_GPU
351    GrContext*              fCurContext;
352    const GrGLInterface*    fCurIntf;
353    GrRenderTarget*         fCurRenderTarget;
354    int fMSAASampleCount;
355#endif
356
357    SkOSWindow::SkBackEndTypes fBackend;
358
359    typedef SampleWindow::DeviceManager INHERITED;
360};
361
362///////////////
363static const char view_inval_msg[] = "view-inval-msg";
364
365void SampleWindow::postInvalDelay() {
366    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
367}
368
369static bool isInvalEvent(const SkEvent& evt) {
370    return evt.isType(view_inval_msg);
371}
372//////////////////
373
374SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
375    : fCreateFunc(func) {
376}
377
378SkView* SkFuncViewFactory::operator() () const {
379    return (*fCreateFunc)();
380}
381
382#include "GMSampleView.h"
383
384SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
385    : fFunc(func) {
386}
387
388SkView* SkGMSampleViewFactory::operator() () const {
389    skiagm::GM* gm = fFunc(NULL);
390    gm->setMode(skiagm::GM::kSample_Mode);
391    return new GMSampleView(gm);
392}
393
394SkViewRegister* SkViewRegister::gHead;
395SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
396    fFact->ref();
397    fChain = gHead;
398    gHead = this;
399}
400
401SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
402    fFact = new SkFuncViewFactory(func);
403    fChain = gHead;
404    gHead = this;
405}
406
407SkViewRegister::SkViewRegister(GMFactoryFunc func) {
408    fFact = new SkGMSampleViewFactory(func);
409    fChain = gHead;
410    gHead = this;
411}
412
413class AutoUnrefArray {
414public:
415    AutoUnrefArray() {}
416    ~AutoUnrefArray() {
417        int count = fObjs.count();
418        for (int i = 0; i < count; ++i) {
419            fObjs[i]->unref();
420        }
421    }
422    SkRefCnt*& push_back() { return *fObjs.append(); }
423
424private:
425    SkTDArray<SkRefCnt*> fObjs;
426};
427
428// registers GMs as Samples
429// This can't be performed during static initialization because it could be
430// run before GMRegistry has been fully built.
431static void SkGMRegistyToSampleRegistry() {
432    static bool gOnce;
433    static AutoUnrefArray fRegisters;
434
435    if (!gOnce) {
436        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
437        while (gmreg) {
438            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
439            gmreg = gmreg->next();
440        }
441        gOnce = true;
442    }
443}
444
445//////////////////////////////////////////////////////////////////////////////
446
447enum FlipAxisEnum {
448    kFlipAxis_X = (1 << 0),
449    kFlipAxis_Y = (1 << 1)
450};
451
452#include "SkDrawFilter.h"
453
454struct HintingState {
455    SkPaint::Hinting hinting;
456    const char* name;
457    const char* label;
458};
459static HintingState gHintingStates[] = {
460    {SkPaint::kNo_Hinting, "Mixed", NULL },
461    {SkPaint::kNo_Hinting, "None", "H0 " },
462    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
463    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
464    {SkPaint::kFull_Hinting, "Full", "Hf " },
465};
466
467struct FilterLevelState {
468    SkPaint::FilterLevel    fLevel;
469    const char*             fName;
470    const char*             fLabel;
471};
472static FilterLevelState gFilterLevelStates[] = {
473    { SkPaint::kNone_FilterLevel,   "Mixed",    NULL    },
474    { SkPaint::kNone_FilterLevel,   "None",     "F0 "   },
475    { SkPaint::kLow_FilterLevel,    "Low",      "F1 "   },
476    { SkPaint::kMedium_FilterLevel, "Medium",   "F2 "   },
477    { SkPaint::kHigh_FilterLevel,   "High",     "F3 "   },
478};
479
480class FlagsDrawFilter : public SkDrawFilter {
481public:
482    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa,
483                    SkOSMenu::TriState subpixel, int hinting, int filterlevel)
484        : fLCDState(lcd)
485        , fAAState(aa)
486        , fSubpixelState(subpixel)
487        , fHintingState(hinting)
488        , fFilterLevelIndex(filterlevel)
489    {
490        SkASSERT((unsigned)filterlevel < SK_ARRAY_COUNT(gFilterLevelStates));
491    }
492
493    virtual bool filter(SkPaint* paint, Type t) {
494        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
495            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
496        }
497        if (SkOSMenu::kMixedState != fAAState) {
498            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
499        }
500        if (0 != fFilterLevelIndex) {
501            paint->setFilterLevel(gFilterLevelStates[fFilterLevelIndex].fLevel);
502        }
503        if (SkOSMenu::kMixedState != fSubpixelState) {
504            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
505        }
506        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
507            paint->setHinting(gHintingStates[fHintingState].hinting);
508        }
509        return true;
510    }
511
512private:
513    SkOSMenu::TriState  fLCDState;
514    SkOSMenu::TriState  fAAState;
515    SkOSMenu::TriState  fSubpixelState;
516    int fHintingState;
517    int fFilterLevelIndex;
518};
519
520//////////////////////////////////////////////////////////////////////////////
521
522#define MAX_ZOOM_LEVEL  8
523#define MIN_ZOOM_LEVEL  -8
524
525static const char gCharEvtName[] = "SampleCode_Char_Event";
526static const char gKeyEvtName[] = "SampleCode_Key_Event";
527static const char gTitleEvtName[] = "SampleCode_Title_Event";
528static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
529static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
530static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
531
532bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
533    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
534        if (outUni) {
535            *outUni = evt.getFast32();
536        }
537        return true;
538    }
539    return false;
540}
541
542bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
543    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
544        if (outKey) {
545            *outKey = (SkKey)evt.getFast32();
546        }
547        return true;
548    }
549    return false;
550}
551
552bool SampleCode::TitleQ(const SkEvent& evt) {
553    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
554}
555
556void SampleCode::TitleR(SkEvent* evt, const char title[]) {
557    SkASSERT(evt && TitleQ(*evt));
558    evt->setString(gTitleEvtName, title);
559}
560
561bool SampleCode::RequestTitle(SkView* view, SkString* title) {
562    SkEvent evt(gTitleEvtName);
563    if (view->doQuery(&evt)) {
564        title->set(evt.findString(gTitleEvtName));
565        return true;
566    }
567    return false;
568}
569
570bool SampleCode::PrefSizeQ(const SkEvent& evt) {
571    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
572}
573
574void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
575    SkASSERT(evt && PrefSizeQ(*evt));
576    SkScalar size[2];
577    size[0] = width;
578    size[1] = height;
579    evt->setScalars(gPrefSizeEvtName, 2, size);
580}
581
582bool SampleCode::FastTextQ(const SkEvent& evt) {
583    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
584}
585
586///////////////////////////////////////////////////////////////////////////////
587
588static SkMSec gAnimTime;
589static SkMSec gAnimTimePrev;
590
591SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
592SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
593SkScalar SampleCode::GetAnimSecondsDelta() {
594    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
595}
596
597SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
598    // since gAnimTime can be up to 32 bits, we can't convert it to a float
599    // or we'll lose the low bits. Hence we use doubles for the intermediate
600    // calculations
601    double seconds = (double)gAnimTime / 1000.0;
602    double value = SkScalarToDouble(speed) * seconds;
603    if (period) {
604        value = ::fmod(value, SkScalarToDouble(period));
605    }
606    return SkDoubleToScalar(value);
607}
608
609SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
610                                      SkScalar periodInSec,
611                                      SkScalar phaseInSec) {
612    if (!periodInSec) {
613        return 0;
614    }
615    double t = (double)gAnimTime / 1000.0 + phaseInSec;
616    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
617    amplitude = SK_ScalarHalf * amplitude;
618    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
619}
620
621enum TilingMode {
622    kNo_Tiling,
623    kAbs_128x128_Tiling,
624    kAbs_256x256_Tiling,
625    kRel_4x4_Tiling,
626    kRel_1x16_Tiling,
627    kRel_16x1_Tiling,
628
629    kLast_TilingMode_Enum
630};
631
632struct TilingInfo {
633    const char* label;
634    SkScalar    w, h;
635};
636
637static const struct TilingInfo gTilingInfo[] = {
638    { "No tiling", SK_Scalar1        , SK_Scalar1         }, // kNo_Tiling
639    { "128x128"  , SkIntToScalar(128), SkIntToScalar(128) }, // kAbs_128x128_Tiling
640    { "256x256"  , SkIntToScalar(256), SkIntToScalar(256) }, // kAbs_256x256_Tiling
641    { "1/4x1/4"  , SK_Scalar1 / 4    , SK_Scalar1 / 4     }, // kRel_4x4_Tiling
642    { "1/1x1/16" , SK_Scalar1        , SK_Scalar1 / 16    }, // kRel_1x16_Tiling
643    { "1/16x1/1" , SK_Scalar1 / 16   , SK_Scalar1         }, // kRel_16x1_Tiling
644};
645SK_COMPILE_ASSERT((SK_ARRAY_COUNT(gTilingInfo) == kLast_TilingMode_Enum),
646                  Incomplete_tiling_labels);
647
648SkSize SampleWindow::tileSize() const {
649    SkASSERT((TilingMode)fTilingMode < kLast_TilingMode_Enum);
650    const struct TilingInfo* info = gTilingInfo + fTilingMode;
651    return SkSize::Make(info->w > SK_Scalar1 ? info->w : this->width() * info->w,
652                        info->h > SK_Scalar1 ? info->h : this->height() * info->h);
653}
654//////////////////////////////////////////////////////////////////////////////
655
656static SkView* curr_view(SkWindow* wind) {
657    SkView::F2BIter iter(wind);
658    return iter.next();
659}
660
661static bool curr_title(SkWindow* wind, SkString* title) {
662    SkView* view = curr_view(wind);
663    if (view) {
664        SkEvent evt(gTitleEvtName);
665        if (view->doQuery(&evt)) {
666            title->set(evt.findString(gTitleEvtName));
667            return true;
668        }
669    }
670    return false;
671}
672
673void SampleWindow::setZoomCenter(float x, float y)
674{
675    fZoomCenterX = x;
676    fZoomCenterY = y;
677}
678
679bool SampleWindow::zoomIn()
680{
681    // Arbitrarily decided
682    if (fFatBitsScale == 25) return false;
683    fFatBitsScale++;
684    this->inval(NULL);
685    return true;
686}
687
688bool SampleWindow::zoomOut()
689{
690    if (fFatBitsScale == 1) return false;
691    fFatBitsScale--;
692    this->inval(NULL);
693    return true;
694}
695
696void SampleWindow::updatePointer(int x, int y)
697{
698    fMouseX = x;
699    fMouseY = y;
700    if (fShowZoomer) {
701        this->inval(NULL);
702    }
703}
704
705static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
706    static const SampleWindow::DeviceType gCT[] = {
707        SampleWindow::kPicture_DeviceType,
708#if SK_SUPPORT_GPU
709        SampleWindow::kGPU_DeviceType,
710#if SK_ANGLE
711        SampleWindow::kANGLE_DeviceType,
712#endif // SK_ANGLE
713        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
714#endif // SK_SUPPORT_GPU
715        SampleWindow::kRaster_DeviceType
716    };
717    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
718    return gCT[ct];
719}
720
721static void usage(const char * argv0) {
722    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path] [--sort]\n", argv0);
723#ifdef SAMPLE_PDF_FILE_VIEWER
724    SkDebugf("                [--pdfDir pdfPath]\n");
725    SkDebugf("    pdfPath: path to directory pdf files are read from\n");
726#endif  // SAMPLE_PDF_FILE_VIEWER
727    SkDebugf("    sampleName: sample at which to start.\n");
728    SkDebugf("    resourcePath: directory that stores image resources.\n");
729    SkDebugf("    msaa: request multisampling with the given sample count.\n");
730    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
731    SkDebugf("    path: path to skia picture\n");
732    SkDebugf("    --sort: sort samples by title, this would help to compare pdf rendering (P:foo.pdf) with skp rendering (P:foo.pdf)\n");
733}
734
735static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
736    SkView* view = (*sampleFactory)();
737    SkString title;
738    SampleCode::RequestTitle(view, &title);
739    view->unref();
740    return title;
741}
742
743static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
744    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
745}
746
747SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
748    : INHERITED(hwnd)
749    , fDevManager(NULL) {
750
751    fCurrIndex = -1;
752
753    this->registerPictFileSamples(argv, argc);
754    this->registerPictFileSample(argv, argc);
755#ifdef SAMPLE_PDF_FILE_VIEWER
756    this->registerPdfFileViewerSamples(argv, argc);
757#endif  // SAMPLE_PDF_FILE_VIEWER
758    SkGMRegistyToSampleRegistry();
759    {
760        const SkViewRegister* reg = SkViewRegister::Head();
761        while (reg) {
762            *fSamples.append() = reg->factory();
763            reg = reg->next();
764        }
765    }
766
767    bool sort = false;
768    for (int i = 0; i < argc; ++i) {
769        if (!strcmp(argv[i], "--sort")) {
770            sort = true;
771            break;
772        }
773    }
774
775    if (sort) {
776        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
777        // skp -> pdf -> png fails.
778        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
779    }
780
781    const char* resourcePath = "resources";  // same default as tests
782    fMSAASampleCount = 0;
783
784    const char* const commandName = argv[0];
785    char* const* stop = argv + argc;
786    for (++argv; argv < stop; ++argv) {
787        if (!strcmp(*argv, "-i") || !strcmp(*argv, "--resourcePath")) {
788            argv++;
789            if (argv < stop && **argv) {
790                resourcePath = *argv;
791            }
792        } else if (strcmp(*argv, "--slide") == 0) {
793            argv++;
794            if (argv < stop && **argv) {
795                fCurrIndex = findByTitle(*argv);
796                if (fCurrIndex < 0) {
797                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
798                    listTitles();
799                }
800            }
801        } else if (strcmp(*argv, "--msaa") == 0) {
802            ++argv;
803            if (argv < stop && **argv) {
804                fMSAASampleCount = atoi(*argv);
805            }
806        } else if (strcmp(*argv, "--list") == 0) {
807            listTitles();
808        } else if (strcmp(*argv, "--pictureDir") == 0) {
809            ++argv;  // This case is dealt with in registerPictFileSamples().
810        } else if (strcmp(*argv, "--picture") == 0) {
811            ++argv;  // This case is dealt with in registerPictFileSample().
812        }
813        else {
814            usage(commandName);
815        }
816    }
817
818    if (fCurrIndex < 0) {
819        SkString title;
820        if (readTitleFromPrefs(&title)) {
821            fCurrIndex = findByTitle(title.c_str());
822        }
823    }
824
825    if (fCurrIndex < 0) {
826        fCurrIndex = 0;
827    }
828
829    gSampleWindow = this;
830
831#ifdef  PIPE_FILE
832    //Clear existing file or create file if it doesn't exist
833    FILE* f = fopen(FILE_PATH, "wb");
834    fclose(f);
835#endif
836
837    fPicture = NULL;
838
839    fDeviceType = kRaster_DeviceType;
840
841#if DEFAULT_TO_GPU
842    fDeviceType = kGPU_DeviceType;
843#endif
844#if SK_ANGLE && DEFAULT_TO_ANGLE
845    fDeviceType = kANGLE_DeviceType;
846#endif
847
848    fUseClip = false;
849    fNClip = false;
850    fAnimating = false;
851    fRotate = false;
852    fRotateAnimTime = 0;
853    fPerspAnim = false;
854    fPerspAnimTime = 0;
855    fRequestGrabImage = false;
856    fPipeState = SkOSMenu::kOffState;
857    fTilingMode = kNo_Tiling;
858    fMeasureFPS = false;
859    fLCDState = SkOSMenu::kMixedState;
860    fAAState = SkOSMenu::kMixedState;
861    fSubpixelState = SkOSMenu::kMixedState;
862    fHintingState = 0;
863    fFilterLevelIndex = 0;
864    fFlipAxis = 0;
865    fScrollTestX = fScrollTestY = 0;
866
867    fMouseX = fMouseY = 0;
868    fFatBitsScale = 8;
869    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
870    fShowZoomer = false;
871
872    fZoomLevel = 0;
873    fZoomScale = SK_Scalar1;
874
875    fMagnify = false;
876
877    fSaveToPdf = false;
878    fPdfCanvas = NULL;
879
880    fTransitionNext = 6;
881    fTransitionPrev = 2;
882
883    int sinkID = this->getSinkID();
884    fAppMenu = new SkOSMenu;
885    fAppMenu->setTitle("Global Settings");
886    int itemID;
887
888    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
889                                "Raster", "Picture", "OpenGL",
890#if SK_ANGLE
891                                "ANGLE",
892#endif
893                                NULL);
894    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
895    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
896    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
897    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
898    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
899    itemID = fAppMenu->appendList("FilterLevel", "FilterLevel", sinkID, fFilterLevelIndex,
900                                  gFilterLevelStates[0].fName,
901                                  gFilterLevelStates[1].fName,
902                                  gFilterLevelStates[2].fName,
903                                  gFilterLevelStates[3].fName,
904                                  gFilterLevelStates[4].fName,
905                                  NULL);
906    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
907    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
908    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
909    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
910                                  gHintingStates[0].name,
911                                  gHintingStates[1].name,
912                                  gHintingStates[2].name,
913                                  gHintingStates[3].name,
914                                  gHintingStates[4].name,
915                                  NULL);
916    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
917
918    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
919                                                  fPipeState);
920    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
921
922    itemID =fAppMenu->appendList("Tiling", "Tiling", sinkID, fTilingMode,
923                                 gTilingInfo[kNo_Tiling].label,
924                                 gTilingInfo[kAbs_128x128_Tiling].label,
925                                 gTilingInfo[kAbs_256x256_Tiling].label,
926                                 gTilingInfo[kRel_4x4_Tiling].label,
927                                 gTilingInfo[kRel_1x16_Tiling].label,
928                                 gTilingInfo[kRel_16x1_Tiling].label,
929                                 NULL);
930    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
931
932    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
933    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
934    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
935    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
936    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
937    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
938    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
939    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
940    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
941    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
942    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
943    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
944    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
945                                fTransitionNext, "Up", "Up and Right", "Right",
946                                "Down and Right", "Down", "Down and Left",
947                                "Left", "Up and Left", NULL);
948    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
949    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
950                                fTransitionPrev, "Up", "Up and Right", "Right",
951                                "Down and Right", "Down", "Down and Left",
952                                "Left", "Up and Left", NULL);
953    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
954    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
955    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
956
957    this->addMenu(fAppMenu);
958    fSlideMenu = new SkOSMenu;
959    this->addMenu(fSlideMenu);
960
961    this->setColorType(kPMColor_SkColorType);
962    this->setVisibleP(true);
963    this->setClipToBounds(false);
964
965    skiagm::GM::SetResourcePath(resourcePath);
966
967    this->loadView((*fSamples[fCurrIndex])());
968
969    fPDFData = NULL;
970
971    if (NULL == devManager) {
972        fDevManager = new DefaultDeviceManager();
973    } else {
974        devManager->ref();
975        fDevManager = devManager;
976    }
977    fDevManager->setUpBackend(this, fMSAASampleCount);
978
979    // If another constructor set our dimensions, ensure that our
980    // onSizeChange gets called.
981    if (this->height() && this->width()) {
982        this->onSizeChange();
983    }
984
985    // can't call this synchronously, since it may require a subclass to
986    // to implement, or the caller may need us to have returned from the
987    // constructor first. Hence we post an event to ourselves.
988//    this->updateTitle();
989    post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
990}
991
992SampleWindow::~SampleWindow() {
993    delete fPicture;
994    delete fPdfCanvas;
995    fTypeface->unref();
996
997    SkSafeUnref(fDevManager);
998}
999
1000static void make_filepath(SkString* path, const char* dir, const SkString& name) {
1001    size_t len = strlen(dir);
1002    path->set(dir);
1003    if (len > 0 && dir[len - 1] != '/') {
1004        path->append("/");
1005    }
1006    path->append(name);
1007}
1008
1009void SampleWindow::registerPictFileSample(char** argv, int argc) {
1010    const char* pict = NULL;
1011
1012    for (int i = 0; i < argc; ++i) {
1013        if (!strcmp(argv[i], "--picture")) {
1014            i += 1;
1015            if (i < argc) {
1016                pict = argv[i];
1017                break;
1018            }
1019        }
1020    }
1021    if (pict) {
1022        SkString path(pict);
1023        fCurrIndex = fSamples.count();
1024        *fSamples.append() = new PictFileFactory(path);
1025    }
1026}
1027
1028void SampleWindow::registerPictFileSamples(char** argv, int argc) {
1029    const char* pictDir = NULL;
1030
1031    for (int i = 0; i < argc; ++i) {
1032        if (!strcmp(argv[i], "--pictureDir")) {
1033            i += 1;
1034            if (i < argc) {
1035                pictDir = argv[i];
1036                break;
1037            }
1038        }
1039    }
1040    if (pictDir) {
1041        SkOSFile::Iter iter(pictDir, "skp");
1042        SkString filename;
1043        while (iter.next(&filename)) {
1044            SkString path;
1045            make_filepath(&path, pictDir, filename);
1046            *fSamples.append() = new PictFileFactory(path);
1047        }
1048    }
1049}
1050
1051#ifdef SAMPLE_PDF_FILE_VIEWER
1052void SampleWindow::registerPdfFileViewerSamples(char** argv, int argc) {
1053    const char* pdfDir = NULL;
1054
1055    for (int i = 0; i < argc; ++i) {
1056        if (!strcmp(argv[i], "--pdfDir")) {
1057            i += 1;
1058            if (i < argc) {
1059                pdfDir = argv[i];
1060                break;
1061            }
1062        }
1063    }
1064    if (pdfDir) {
1065        SkOSFile::Iter iter(pdfDir, "pdf");
1066        SkString filename;
1067        while (iter.next(&filename)) {
1068            SkString path;
1069            make_filepath(&path, pdfDir, filename);
1070            *fSamples.append() = new PdfFileViewerFactory(path);
1071        }
1072    }
1073}
1074#endif  // SAMPLE_PDF_FILE_VIEWER
1075
1076
1077int SampleWindow::findByTitle(const char title[]) {
1078    int i, count = fSamples.count();
1079    for (i = 0; i < count; i++) {
1080        if (getSampleTitle(i).equals(title)) {
1081            return i;
1082        }
1083    }
1084    return -1;
1085}
1086
1087void SampleWindow::listTitles() {
1088    int count = fSamples.count();
1089    SkDebugf("All Slides:\n");
1090    for (int i = 0; i < count; i++) {
1091        SkDebugf("    %s\n", getSampleTitle(i).c_str());
1092    }
1093}
1094
1095static SkBitmap capture_bitmap(SkCanvas* canvas) {
1096    SkBitmap bm;
1097    if (bm.allocPixels(canvas->imageInfo())) {
1098        canvas->readPixels(&bm, 0, 0);
1099    }
1100    return bm;
1101}
1102
1103static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1104                        SkBitmap* diff) {
1105    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1106
1107    SkAutoLockPixels alp0(src);
1108    SkAutoLockPixels alp1(orig);
1109    for (int y = 0; y < src.height(); y++) {
1110        const void* srcP = src.getAddr(0, y);
1111        const void* origP = orig.getAddr(0, y);
1112        size_t bytes = src.width() * src.bytesPerPixel();
1113        if (memcmp(srcP, origP, bytes)) {
1114            SkDebugf("---------- difference on line %d\n", y);
1115            return true;
1116        }
1117    }
1118    return false;
1119}
1120
1121static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1122{
1123    SkColor desiredColor = paint.getColor();
1124    paint.setColor(SK_ColorWHITE);
1125    const char* c_str = string.c_str();
1126    size_t size = string.size();
1127    SkRect bounds;
1128    paint.measureText(c_str, size, &bounds);
1129    bounds.offset(left, top);
1130    SkScalar inset = SkIntToScalar(-2);
1131    bounds.inset(inset, inset);
1132    canvas->drawRect(bounds, paint);
1133    if (desiredColor != SK_ColorBLACK) {
1134        paint.setColor(SK_ColorBLACK);
1135        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1136    }
1137    paint.setColor(desiredColor);
1138    canvas->drawText(c_str, size, left, top, paint);
1139}
1140
1141#define XCLIP_N  8
1142#define YCLIP_N  8
1143
1144void SampleWindow::draw(SkCanvas* canvas) {
1145    // update the animation time
1146    if (!gAnimTimePrev && !gAnimTime) {
1147        // first time make delta be 0
1148        gAnimTime = SkTime::GetMSecs();
1149        gAnimTimePrev = gAnimTime;
1150    } else {
1151        gAnimTimePrev = gAnimTime;
1152        gAnimTime = SkTime::GetMSecs();
1153    }
1154
1155    if (fGesture.isActive()) {
1156        this->updateMatrix();
1157    }
1158
1159    if (fMeasureFPS) {
1160        fMeasureFPS_Time = 0;
1161    }
1162
1163    if (fNClip) {
1164        this->INHERITED::draw(canvas);
1165        SkBitmap orig = capture_bitmap(canvas);
1166
1167        const SkScalar w = this->width();
1168        const SkScalar h = this->height();
1169        const SkScalar cw = w / XCLIP_N;
1170        const SkScalar ch = h / YCLIP_N;
1171        for (int y = 0; y < YCLIP_N; y++) {
1172            SkRect r;
1173            r.fTop = y * ch;
1174            r.fBottom = (y + 1) * ch;
1175            if (y == YCLIP_N - 1) {
1176                r.fBottom = h;
1177            }
1178            for (int x = 0; x < XCLIP_N; x++) {
1179                SkAutoCanvasRestore acr(canvas, true);
1180                r.fLeft = x * cw;
1181                r.fRight = (x + 1) * cw;
1182                if (x == XCLIP_N - 1) {
1183                    r.fRight = w;
1184                }
1185                canvas->clipRect(r);
1186                this->INHERITED::draw(canvas);
1187            }
1188        }
1189
1190        SkBitmap diff;
1191        if (bitmap_diff(canvas, orig, &diff)) {
1192        }
1193    } else {
1194        SkSize tile = this->tileSize();
1195
1196        for (SkScalar y = 0; y < height(); y += tile.height()) {
1197            for (SkScalar x = 0; x < width(); x += tile.width()) {
1198                SkAutoCanvasRestore acr(canvas, true);
1199                canvas->clipRect(SkRect::MakeXYWH(x, y,
1200                                                  tile.width(),
1201                                                  tile.height()));
1202                this->INHERITED::draw(canvas);
1203            }
1204        }
1205
1206        if (fTilingMode != kNo_Tiling) {
1207            SkPaint paint;
1208            paint.setColor(0x60FF00FF);
1209            paint.setStyle(SkPaint::kStroke_Style);
1210
1211            for (SkScalar y = 0; y < height(); y += tile.height()) {
1212                for (SkScalar x = 0; x < width(); x += tile.width()) {
1213                    canvas->drawRect(SkRect::MakeXYWH(x, y,
1214                                                      tile.width(),
1215                                                      tile.height()),
1216                                     paint);
1217                }
1218            }
1219        }
1220    }
1221    if (fShowZoomer && !fSaveToPdf) {
1222        showZoomer(canvas);
1223    }
1224    if (fMagnify && !fSaveToPdf) {
1225        magnify(canvas);
1226    }
1227
1228    if (fMeasureFPS && fMeasureFPS_Time) {
1229        this->updateTitle();
1230        this->postInvalDelay();
1231    }
1232
1233    // do this last
1234    fDevManager->publishCanvas(fDeviceType, canvas, this);
1235}
1236
1237static float clipW = 200;
1238static float clipH = 200;
1239void SampleWindow::magnify(SkCanvas* canvas) {
1240    SkRect r;
1241    int count = canvas->save();
1242
1243    SkMatrix m = canvas->getTotalMatrix();
1244    if (!m.invert(&m)) {
1245        return;
1246    }
1247    SkPoint offset, center;
1248    SkScalar mouseX = fMouseX * SK_Scalar1;
1249    SkScalar mouseY = fMouseY * SK_Scalar1;
1250    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1251    m.mapXY(mouseX, mouseY, &center);
1252
1253    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1254    r.offset(offset.fX, offset.fY);
1255
1256    SkPaint paint;
1257    paint.setColor(0xFF66AAEE);
1258    paint.setStyle(SkPaint::kStroke_Style);
1259    paint.setStrokeWidth(10.f * m.getScaleX());
1260    //lense offset
1261    //canvas->translate(0, -250);
1262    canvas->drawRect(r, paint);
1263    canvas->clipRect(r);
1264
1265    m = canvas->getTotalMatrix();
1266    m.setTranslate(-center.fX, -center.fY);
1267    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1268    m.postTranslate(center.fX, center.fY);
1269    canvas->concat(m);
1270
1271    this->INHERITED::draw(canvas);
1272
1273    canvas->restoreToCount(count);
1274}
1275
1276void SampleWindow::showZoomer(SkCanvas* canvas) {
1277        int count = canvas->save();
1278        canvas->resetMatrix();
1279        // Ensure the mouse position is on screen.
1280        int width = SkScalarRoundToInt(this->width());
1281        int height = SkScalarRoundToInt(this->height());
1282        if (fMouseX >= width) fMouseX = width - 1;
1283        else if (fMouseX < 0) fMouseX = 0;
1284        if (fMouseY >= height) fMouseY = height - 1;
1285        else if (fMouseY < 0) fMouseY = 0;
1286
1287        SkBitmap bitmap = capture_bitmap(canvas);
1288        bitmap.lockPixels();
1289
1290        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1291        int zoomedWidth = (width >> 1) | 1;
1292        int zoomedHeight = (height >> 1) | 1;
1293        SkIRect src;
1294        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1295        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1296        SkRect dest;
1297        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1298        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1299        SkPaint paint;
1300        // Clear the background behind our zoomed in view
1301        paint.setColor(SK_ColorWHITE);
1302        canvas->drawRect(dest, paint);
1303        canvas->drawBitmapRect(bitmap, &src, dest);
1304        paint.setColor(SK_ColorBLACK);
1305        paint.setStyle(SkPaint::kStroke_Style);
1306        // Draw a border around the pixel in the middle
1307        SkRect originalPixel;
1308        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1309        SkMatrix matrix;
1310        SkRect scalarSrc;
1311        scalarSrc.set(src);
1312        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1313        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1314            SkRect pixel;
1315            matrix.mapRect(&pixel, originalPixel);
1316            // TODO Perhaps measure the values and make the outline white if it's "dark"
1317            if (color == SK_ColorBLACK) {
1318                paint.setColor(SK_ColorWHITE);
1319            }
1320            canvas->drawRect(pixel, paint);
1321        }
1322        paint.setColor(SK_ColorBLACK);
1323        // Draw a border around the destination rectangle
1324        canvas->drawRect(dest, paint);
1325        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1326        // Identify the pixel and its color on screen
1327        paint.setTypeface(fTypeface);
1328        paint.setAntiAlias(true);
1329        SkScalar lineHeight = paint.getFontMetrics(NULL);
1330        SkString string;
1331        string.appendf("(%i, %i)", fMouseX, fMouseY);
1332        SkScalar left = dest.fLeft + SkIntToScalar(3);
1333        SkScalar i = SK_Scalar1;
1334        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1335        // Alpha
1336        i += SK_Scalar1;
1337        string.reset();
1338        string.appendf("A: %X", SkColorGetA(color));
1339        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1340        // Red
1341        i += SK_Scalar1;
1342        string.reset();
1343        string.appendf("R: %X", SkColorGetR(color));
1344        paint.setColor(SK_ColorRED);
1345        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1346        // Green
1347        i += SK_Scalar1;
1348        string.reset();
1349        string.appendf("G: %X", SkColorGetG(color));
1350        paint.setColor(SK_ColorGREEN);
1351        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1352        // Blue
1353        i += SK_Scalar1;
1354        string.reset();
1355        string.appendf("B: %X", SkColorGetB(color));
1356        paint.setColor(SK_ColorBLUE);
1357        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1358        canvas->restoreToCount(count);
1359}
1360
1361void SampleWindow::onDraw(SkCanvas* canvas) {
1362}
1363
1364#include "SkColorPriv.h"
1365
1366#if 0 // UNUSED
1367static void reverseRedAndBlue(const SkBitmap& bm) {
1368    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1369    uint8_t* p = (uint8_t*)bm.getPixels();
1370    uint8_t* stop = p + bm.getSize();
1371    while (p < stop) {
1372        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1373        unsigned scale = SkAlpha255To256(p[3]);
1374        unsigned r = p[2];
1375        unsigned b = p[0];
1376        p[0] = SkAlphaMul(r, scale);
1377        p[1] = SkAlphaMul(p[1], scale);
1378        p[2] = SkAlphaMul(b, scale);
1379        p += 4;
1380    }
1381}
1382#endif
1383
1384void SampleWindow::saveToPdf()
1385{
1386    fSaveToPdf = true;
1387    this->inval(NULL);
1388}
1389
1390SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1391    if (fSaveToPdf) {
1392        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1393        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1394        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1395                canvas->getTotalMatrix());
1396        fPdfCanvas = new SkCanvas(pdfDevice);
1397        pdfDevice->unref();
1398        canvas = fPdfCanvas;
1399    } else if (kPicture_DeviceType == fDeviceType) {
1400        fPicture = new SkPicture;
1401        canvas = fPicture->beginRecording(9999, 9999);
1402    } else {
1403#if SK_SUPPORT_GPU
1404        if (kNullGPU_DeviceType != fDeviceType)
1405#endif
1406        {
1407            canvas = this->INHERITED::beforeChildren(canvas);
1408        }
1409    }
1410
1411    if (fUseClip) {
1412        canvas->drawColor(0xFFFF88FF);
1413        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1414    }
1415
1416    return canvas;
1417}
1418
1419static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1420                      const SkRegion& rgn) {
1421    SkCanvas    canvas(bm);
1422    SkRegion    inval(rgn);
1423
1424    inval.translate(r.fLeft, r.fTop);
1425    canvas.clipRegion(inval);
1426    canvas.drawColor(0xFFFF8080);
1427}
1428#include "SkData.h"
1429void SampleWindow::afterChildren(SkCanvas* orig) {
1430    if (fSaveToPdf) {
1431        fSaveToPdf = false;
1432        if (fShowZoomer) {
1433            showZoomer(fPdfCanvas);
1434        }
1435        SkString name;
1436        name.printf("%s.pdf", this->getTitle());
1437        SkPDFDocument doc;
1438        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1439        doc.appendPage(device);
1440#ifdef SK_BUILD_FOR_ANDROID
1441        name.prepend("/sdcard/");
1442#endif
1443
1444#ifdef SK_BUILD_FOR_IOS
1445        SkDynamicMemoryWStream mstream;
1446        doc.emitPDF(&mstream);
1447        fPDFData = mstream.copyToData();
1448#endif
1449        SkFILEWStream stream(name.c_str());
1450        if (stream.isValid()) {
1451            doc.emitPDF(&stream);
1452            const char* desc = "File saved from Skia SampleApp";
1453            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1454        }
1455
1456        delete fPdfCanvas;
1457        fPdfCanvas = NULL;
1458
1459        // We took over the draw calls in order to create the PDF, so we need
1460        // to redraw.
1461        this->inval(NULL);
1462        return;
1463    }
1464
1465    if (fRequestGrabImage) {
1466        fRequestGrabImage = false;
1467
1468        SkBaseDevice* device = orig->getDevice();
1469        SkBitmap bmp;
1470        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1471            static int gSampleGrabCounter;
1472            SkString name;
1473            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1474            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1475                                       SkImageEncoder::kPNG_Type, 100);
1476        }
1477    }
1478
1479    if (kPicture_DeviceType == fDeviceType) {
1480        if (true) {
1481            SkPicture* pict = new SkPicture(*fPicture);
1482            fPicture->unref();
1483            this->installDrawFilter(orig);
1484            orig->drawPicture(*pict);
1485            pict->unref();
1486        } else if (true) {
1487            SkDynamicMemoryWStream ostream;
1488            fPicture->serialize(&ostream);
1489            fPicture->unref();
1490
1491            SkAutoDataUnref data(ostream.copyToData());
1492            SkMemoryStream istream(data->data(), data->size());
1493            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1494            if (pict.get() != NULL) {
1495                orig->drawPicture(*pict.get());
1496            }
1497        } else {
1498            fPicture->draw(orig);
1499            fPicture->unref();
1500        }
1501        fPicture = NULL;
1502    }
1503
1504    // Do this after presentGL and other finishing, rather than in afterChild
1505    if (fMeasureFPS && fMeasureFPS_StartTime) {
1506        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1507    }
1508
1509    //    if ((fScrollTestX | fScrollTestY) != 0)
1510    if (false) {
1511        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1512        int dx = fScrollTestX * 7;
1513        int dy = fScrollTestY * 7;
1514        SkIRect r;
1515        SkRegion inval;
1516
1517        r.set(50, 50, 50+100, 50+100);
1518        bm.scrollRect(&r, dx, dy, &inval);
1519        paint_rgn(bm, r, inval);
1520    }
1521}
1522
1523void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1524    if (fRotate) {
1525        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1526
1527        SkScalar cx = this->width() / 2;
1528        SkScalar cy = this->height() / 2;
1529        canvas->translate(cx, cy);
1530        canvas->rotate(fRotateAnimTime * 10);
1531        canvas->translate(-cx, -cy);
1532    }
1533
1534    if (fPerspAnim) {
1535        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1536
1537        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1538        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1539        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1540        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1541            t = gAnimPeriod - t;
1542        }
1543        t = 2 * t - gAnimPeriod;
1544        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1545        SkMatrix m;
1546        m.reset();
1547        m.setPerspY(t);
1548        canvas->concat(m);
1549    }
1550
1551    this->installDrawFilter(canvas);
1552
1553    if (fMeasureFPS) {
1554        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1555            fMeasureFPS_StartTime = SkTime::GetMSecs();
1556        }
1557    } else {
1558        (void)SampleView::SetRepeatDraw(child, 1);
1559    }
1560    if (fPerspAnim || fRotate) {
1561        this->inval(NULL);
1562    }
1563}
1564
1565void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1566    canvas->setDrawFilter(NULL);
1567}
1568
1569static SkColorType gColorTypeCycle[] = {
1570    kUnknown_SkColorType,           // none -> none
1571    kUnknown_SkColorType,           // a8 -> none
1572    kARGB_4444_SkColorType,         // 565 -> 4444
1573    kPMColor_SkColorType,           // 4444 -> 8888
1574    kRGB_565_SkColorType,           // 8888 -> 565
1575    kRGB_565_SkColorType,           // 8888 -> 565
1576    kUnknown_SkColorType,           // index8 -> none
1577};
1578
1579static SkColorType cycle_configs(SkColorType c) {
1580    return gColorTypeCycle[c];
1581}
1582
1583void SampleWindow::changeZoomLevel(float delta) {
1584    fZoomLevel += delta;
1585    if (fZoomLevel > 0) {
1586        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1587        fZoomScale = fZoomLevel + SK_Scalar1;
1588    } else if (fZoomLevel < 0) {
1589        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1590        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1591    } else {
1592        fZoomScale = SK_Scalar1;
1593    }
1594    this->updateMatrix();
1595}
1596
1597void SampleWindow::updateMatrix(){
1598    SkMatrix m;
1599    m.reset();
1600    if (fZoomLevel) {
1601        SkPoint center;
1602        //m = this->getLocalMatrix();//.invert(&m);
1603        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1604        SkScalar cx = center.fX;
1605        SkScalar cy = center.fY;
1606
1607        m.setTranslate(-cx, -cy);
1608        m.postScale(fZoomScale, fZoomScale);
1609        m.postTranslate(cx, cy);
1610    }
1611
1612    if (fFlipAxis) {
1613        m.preTranslate(fZoomCenterX, fZoomCenterY);
1614        if (fFlipAxis & kFlipAxis_X) {
1615            m.preScale(-SK_Scalar1, SK_Scalar1);
1616        }
1617        if (fFlipAxis & kFlipAxis_Y) {
1618            m.preScale(SK_Scalar1, -SK_Scalar1);
1619        }
1620        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1621        //canvas->concat(m);
1622    }
1623    // Apply any gesture matrix
1624    m.preConcat(fGesture.localM());
1625    m.preConcat(fGesture.globalM());
1626
1627    this->setLocalMatrix(m);
1628
1629    this->updateTitle();
1630    this->inval(NULL);
1631}
1632bool SampleWindow::previousSample() {
1633    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1634    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1635                                     fTransitionPrev));
1636    return true;
1637}
1638
1639bool SampleWindow::nextSample() {
1640    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1641    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1642                                     fTransitionNext));
1643    return true;
1644}
1645
1646bool SampleWindow::goToSample(int i) {
1647    fCurrIndex = (i) % fSamples.count();
1648    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1649    return true;
1650}
1651
1652SkString SampleWindow::getSampleTitle(int i) {
1653    return ::getSampleTitle(fSamples[i]);
1654}
1655
1656int SampleWindow::sampleCount() {
1657    return fSamples.count();
1658}
1659
1660void SampleWindow::showOverview() {
1661    this->loadView(create_transition(curr_view(this),
1662                                     create_overview(fSamples.count(), fSamples.begin()),
1663                                     4));
1664}
1665
1666void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1667    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fSubpixelState,
1668                                              fHintingState, fFilterLevelIndex))->unref();
1669}
1670
1671void SampleWindow::postAnimatingEvent() {
1672    if (fAnimating) {
1673        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1674    }
1675}
1676
1677bool SampleWindow::onEvent(const SkEvent& evt) {
1678    if (evt.isType(gUpdateWindowTitleEvtName)) {
1679        this->updateTitle();
1680        return true;
1681    }
1682    if (evt.isType(ANIMATING_EVENTTYPE)) {
1683        if (fAnimating) {
1684            this->nextSample();
1685            this->postAnimatingEvent();
1686        }
1687        return true;
1688    }
1689    if (evt.isType("replace-transition-view")) {
1690        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1691        return true;
1692    }
1693    if (evt.isType("set-curr-index")) {
1694        this->goToSample(evt.getFast32());
1695        return true;
1696    }
1697    if (isInvalEvent(evt)) {
1698        this->inval(NULL);
1699        return true;
1700    }
1701    int selected = -1;
1702    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1703        this->setDeviceType((DeviceType)selected);
1704        return true;
1705    }
1706    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1707#ifdef PIPE_NET
1708        if (!fPipeState != SkOSMenu::kOnState)
1709            gServer.disconnectAll();
1710#endif
1711        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1712        this->updateTitle();
1713        this->inval(NULL);
1714        return true;
1715    }
1716    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1717        this->toggleSlideshow();
1718        return true;
1719    }
1720    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1721        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1722        SkOSMenu::FindListIndex(evt, "FilterLevel", &fFilterLevelIndex) ||
1723        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1724        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1725        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1726        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1727        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1728        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1729        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1730        this->inval(NULL);
1731        this->updateTitle();
1732        return true;
1733    }
1734    if (SkOSMenu::FindListIndex(evt, "Tiling", &fTilingMode)) {
1735        if (SampleView::IsSampleView(curr_view(this))) {
1736            ((SampleView*)curr_view(this))->onTileSizeChanged(this->tileSize());
1737        }
1738        this->inval(NULL);
1739        this->updateTitle();
1740        return true;
1741    }
1742    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1743        fFlipAxis ^= kFlipAxis_X;
1744        this->updateMatrix();
1745        return true;
1746    }
1747    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1748        fFlipAxis ^= kFlipAxis_Y;
1749        this->updateMatrix();
1750        return true;
1751    }
1752    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1753        this->saveToPdf();
1754        return true;
1755    }
1756    return this->INHERITED::onEvent(evt);
1757}
1758
1759bool SampleWindow::onQuery(SkEvent* query) {
1760    if (query->isType("get-slide-count")) {
1761        query->setFast32(fSamples.count());
1762        return true;
1763    }
1764    if (query->isType("get-slide-title")) {
1765        SkView* view = (*fSamples[query->getFast32()])();
1766        SkEvent evt(gTitleEvtName);
1767        if (view->doQuery(&evt)) {
1768            query->setString("title", evt.findString(gTitleEvtName));
1769        }
1770        SkSafeUnref(view);
1771        return true;
1772    }
1773    if (query->isType("use-fast-text")) {
1774        SkEvent evt(gFastTextEvtName);
1775        return curr_view(this)->doQuery(&evt);
1776    }
1777    if (query->isType("ignore-window-bitmap")) {
1778        query->setFast32(this->getGrContext() != NULL);
1779        return true;
1780    }
1781    return this->INHERITED::onQuery(query);
1782}
1783
1784#if 0 // UNUSED
1785static void cleanup_for_filename(SkString* name) {
1786    char* str = name->writable_str();
1787    for (size_t i = 0; i < name->size(); i++) {
1788        switch (str[i]) {
1789            case ':': str[i] = '-'; break;
1790            case '/': str[i] = '-'; break;
1791            case ' ': str[i] = '_'; break;
1792            default: break;
1793        }
1794    }
1795}
1796#endif
1797
1798bool SampleWindow::onHandleChar(SkUnichar uni) {
1799    {
1800        SkView* view = curr_view(this);
1801        if (view) {
1802            SkEvent evt(gCharEvtName);
1803            evt.setFast32(uni);
1804            if (view->doQuery(&evt)) {
1805                return true;
1806            }
1807        }
1808    }
1809
1810    int dx = 0xFF;
1811    int dy = 0xFF;
1812
1813    switch (uni) {
1814        case '5': dx =  0; dy =  0; break;
1815        case '8': dx =  0; dy = -1; break;
1816        case '6': dx =  1; dy =  0; break;
1817        case '2': dx =  0; dy =  1; break;
1818        case '4': dx = -1; dy =  0; break;
1819        case '7': dx = -1; dy = -1; break;
1820        case '9': dx =  1; dy = -1; break;
1821        case '3': dx =  1; dy =  1; break;
1822        case '1': dx = -1; dy =  1; break;
1823
1824        default:
1825            break;
1826    }
1827
1828    if (0xFF != dx && 0xFF != dy) {
1829        if ((dx | dy) == 0) {
1830            fScrollTestX = fScrollTestY = 0;
1831        } else {
1832            fScrollTestX += dx;
1833            fScrollTestY += dy;
1834        }
1835        this->inval(NULL);
1836        return true;
1837    }
1838
1839    switch (uni) {
1840        case 'B':
1841            post_event_to_sink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1842            // Cannot call updateTitle() synchronously, because the toggleBBox event is still in
1843            // the queue.
1844            post_event_to_sink(SkNEW_ARGS(SkEvent, (gUpdateWindowTitleEvtName)), this);
1845            this->inval(NULL);
1846            break;
1847        case 'f':
1848            // only
1849            toggleFPS();
1850            break;
1851        case 'g':
1852            fRequestGrabImage = true;
1853            this->inval(NULL);
1854            break;
1855        case 'G':
1856            gShowGMBounds = !gShowGMBounds;
1857            post_event_to_sink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1858                            curr_view(this));
1859            this->inval(NULL);
1860            break;
1861        case 'i':
1862            this->zoomIn();
1863            break;
1864        case 'o':
1865            this->zoomOut();
1866            break;
1867        case 'r':
1868            fRotate = !fRotate;
1869            fRotateAnimTime = 0;
1870            this->inval(NULL);
1871            this->updateTitle();
1872            return true;
1873        case 'k':
1874            fPerspAnim = !fPerspAnim;
1875            this->inval(NULL);
1876            this->updateTitle();
1877            return true;
1878#if SK_SUPPORT_GPU
1879        case '\\':
1880            this->setDeviceType(kNullGPU_DeviceType);
1881            this->inval(NULL);
1882            this->updateTitle();
1883            return true;
1884        case 'p':
1885            {
1886                GrContext* grContext = this->getGrContext();
1887                if (grContext) {
1888                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1889                    grContext->freeGpuResources();
1890                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1891                             cacheBytes);
1892                }
1893            }
1894            return true;
1895#endif
1896        default:
1897            break;
1898    }
1899
1900    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1901        this->onUpdateMenu(fAppMenu);
1902        this->onUpdateMenu(fSlideMenu);
1903        return true;
1904    }
1905    return this->INHERITED::onHandleChar(uni);
1906}
1907
1908void SampleWindow::setDeviceType(DeviceType type) {
1909    if (type == fDeviceType)
1910        return;
1911
1912    fDevManager->tearDownBackend(this);
1913
1914    fDeviceType = type;
1915
1916    fDevManager->setUpBackend(this, fMSAASampleCount);
1917
1918    this->updateTitle();
1919    this->inval(NULL);
1920}
1921
1922void SampleWindow::toggleSlideshow() {
1923    fAnimating = !fAnimating;
1924    this->postAnimatingEvent();
1925    this->updateTitle();
1926}
1927
1928void SampleWindow::toggleRendering() {
1929    this->setDeviceType(cycle_devicetype(fDeviceType));
1930    this->updateTitle();
1931    this->inval(NULL);
1932}
1933
1934void SampleWindow::toggleFPS() {
1935    fMeasureFPS = !fMeasureFPS;
1936    this->updateTitle();
1937    this->inval(NULL);
1938}
1939
1940#include "SkDumpCanvas.h"
1941
1942bool SampleWindow::onHandleKey(SkKey key) {
1943    {
1944        SkView* view = curr_view(this);
1945        if (view) {
1946            SkEvent evt(gKeyEvtName);
1947            evt.setFast32(key);
1948            if (view->doQuery(&evt)) {
1949                return true;
1950            }
1951        }
1952    }
1953    switch (key) {
1954        case kRight_SkKey:
1955            if (this->nextSample()) {
1956                return true;
1957            }
1958            break;
1959        case kLeft_SkKey:
1960            if (this->previousSample()) {
1961                return true;
1962            }
1963            return true;
1964        case kUp_SkKey:
1965            if (USE_ARROWS_FOR_ZOOM) {
1966                this->changeZoomLevel(1.f / 32.f);
1967            } else {
1968                fNClip = !fNClip;
1969                this->inval(NULL);
1970                this->updateTitle();
1971            }
1972            return true;
1973        case kDown_SkKey:
1974            if (USE_ARROWS_FOR_ZOOM) {
1975                this->changeZoomLevel(-1.f / 32.f);
1976            } else {
1977                this->setColorType(cycle_configs(this->getBitmap().colorType()));
1978                this->updateTitle();
1979            }
1980            return true;
1981        case kOK_SkKey: {
1982            SkString title;
1983            if (curr_title(this, &title)) {
1984                writeTitleToPrefs(title.c_str());
1985            }
1986            return true;
1987        }
1988        case kBack_SkKey:
1989            this->showOverview();
1990            return true;
1991        default:
1992            break;
1993    }
1994    return this->INHERITED::onHandleKey(key);
1995}
1996
1997///////////////////////////////////////////////////////////////////////////////
1998
1999static const char gGestureClickType[] = "GestureClickType";
2000
2001bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
2002        void* owner, unsigned modi) {
2003    if (Click::kMoved_State == state) {
2004        updatePointer(x, y);
2005    }
2006    int w = SkScalarRoundToInt(this->width());
2007    int h = SkScalarRoundToInt(this->height());
2008
2009    // check for the resize-box
2010    if (w - x < 16 && h - y < 16) {
2011        return false;   // let the OS handle the click
2012    }
2013    else if (fMagnify) {
2014        //it's only necessary to update the drawing if there's a click
2015        this->inval(NULL);
2016        return false; //prevent dragging while magnify is enabled
2017    } else {
2018        // capture control+option, and trigger debugger
2019        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
2020            if (Click::kDown_State == state) {
2021                SkEvent evt("debug-hit-test");
2022                evt.setS32("debug-hit-test-x", x);
2023                evt.setS32("debug-hit-test-y", y);
2024                curr_view(this)->doEvent(evt);
2025            }
2026            return true;
2027        } else {
2028            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
2029        }
2030    }
2031}
2032
2033class GestureClick : public SkView::Click {
2034public:
2035    GestureClick(SkView* target) : SkView::Click(target) {
2036        this->setType(gGestureClickType);
2037    }
2038
2039    static bool IsGesture(Click* click) {
2040        return click->isType(gGestureClickType);
2041    }
2042};
2043
2044SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
2045                                                unsigned modi) {
2046    return new GestureClick(this);
2047}
2048
2049bool SampleWindow::onClick(Click* click) {
2050    if (GestureClick::IsGesture(click)) {
2051        float x = static_cast<float>(click->fICurr.fX);
2052        float y = static_cast<float>(click->fICurr.fY);
2053
2054        switch (click->fState) {
2055            case SkView::Click::kDown_State:
2056                fGesture.touchBegin(click->fOwner, x, y);
2057                break;
2058            case SkView::Click::kMoved_State:
2059                fGesture.touchMoved(click->fOwner, x, y);
2060                this->updateMatrix();
2061                break;
2062            case SkView::Click::kUp_State:
2063                fGesture.touchEnd(click->fOwner);
2064                this->updateMatrix();
2065                break;
2066        }
2067        return true;
2068    }
2069    return false;
2070}
2071
2072///////////////////////////////////////////////////////////////////////////////
2073
2074void SampleWindow::loadView(SkView* view) {
2075    SkView::F2BIter iter(this);
2076    SkView* prev = iter.next();
2077    if (prev) {
2078        prev->detachFromParent();
2079    }
2080
2081    view->setVisibleP(true);
2082    view->setClipToBounds(false);
2083    this->attachChildToFront(view)->unref();
2084    view->setSize(this->width(), this->height());
2085
2086    //repopulate the slide menu when a view is loaded
2087    fSlideMenu->reset();
2088
2089    (void)SampleView::SetUsePipe(view, fPipeState);
2090    if (SampleView::IsSampleView(view)) {
2091        SampleView* sampleView = (SampleView*)view;
2092        sampleView->requestMenu(fSlideMenu);
2093        sampleView->onTileSizeChanged(this->tileSize());
2094    }
2095    this->onUpdateMenu(fSlideMenu);
2096    this->updateTitle();
2097}
2098
2099static const char* gConfigNames[] = {
2100    "unknown config",
2101    "A8",
2102    "Index8",
2103    "565",
2104    "4444",
2105    "8888"
2106};
2107
2108static const char* configToString(SkBitmap::Config c) {
2109    return gConfigNames[c];
2110}
2111
2112static const char* gDeviceTypePrefix[] = {
2113    "raster: ",
2114    "picture: ",
2115#if SK_SUPPORT_GPU
2116    "opengl: ",
2117#if SK_ANGLE
2118    "angle: ",
2119#endif // SK_ANGLE
2120    "null-gl: "
2121#endif // SK_SUPPORT_GPU
2122};
2123SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2124                  array_size_mismatch);
2125
2126static const char* trystate_str(SkOSMenu::TriState state,
2127                                const char trueStr[], const char falseStr[]) {
2128    if (SkOSMenu::kOnState == state) {
2129        return trueStr;
2130    } else if (SkOSMenu::kOffState == state) {
2131        return falseStr;
2132    }
2133    return NULL;
2134}
2135
2136void SampleWindow::updateTitle() {
2137    SkView* view = curr_view(this);
2138
2139    SkString title;
2140    if (!curr_title(this, &title)) {
2141        title.set("<unknown>");
2142    }
2143
2144    title.prepend(gDeviceTypePrefix[fDeviceType]);
2145
2146    title.prepend(" ");
2147    title.prepend(configToString(this->getBitmap().config()));
2148
2149    if (fTilingMode != kNo_Tiling) {
2150        title.prependf("<T: %s> ", gTilingInfo[fTilingMode].label);
2151    }
2152    if (fAnimating) {
2153        title.prepend("<A> ");
2154    }
2155    if (fRotate) {
2156        title.prepend("<R> ");
2157    }
2158    if (fNClip) {
2159        title.prepend("<C> ");
2160    }
2161    if (fPerspAnim) {
2162        title.prepend("<K> ");
2163    }
2164
2165    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2166    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2167    title.prepend(gFilterLevelStates[fFilterLevelIndex].fLabel);
2168    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2169    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2170    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2171    title.prepend(gHintingStates[fHintingState].label);
2172
2173    if (fZoomLevel) {
2174        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2175    }
2176
2177    if (fMeasureFPS) {
2178        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2179    }
2180    if (SampleView::IsSampleView(view)) {
2181        switch (fPipeState) {
2182            case SkOSMenu::kOnState:
2183                title.prepend("<Pipe> ");
2184                break;
2185            case SkOSMenu::kMixedState:
2186                title.prepend("<Tiled Pipe> ");
2187                break;
2188
2189            default:
2190                break;
2191        }
2192        title.prepend("! ");
2193    }
2194
2195#if SK_SUPPORT_GPU
2196    if (IsGpuDeviceType(fDeviceType) &&
2197        NULL != fDevManager &&
2198        fDevManager->getGrRenderTarget() &&
2199        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2200        title.appendf(" [MSAA: %d]",
2201                       fDevManager->getGrRenderTarget()->numSamples());
2202    }
2203#endif
2204
2205    this->setTitle(title.c_str());
2206}
2207
2208void SampleWindow::onSizeChange() {
2209    this->INHERITED::onSizeChange();
2210
2211    SkView::F2BIter iter(this);
2212    SkView* view = iter.next();
2213    view->setSize(this->width(), this->height());
2214
2215    // rebuild our clippath
2216    {
2217        const SkScalar W = this->width();
2218        const SkScalar H = this->height();
2219
2220        fClipPath.reset();
2221#if 0
2222        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2223            SkRect r;
2224            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2225            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2226                fClipPath.addRect(r);
2227        }
2228#else
2229        SkRect r;
2230        r.set(0, 0, W, H);
2231        fClipPath.addRect(r, SkPath::kCCW_Direction);
2232        r.set(W/4, H/4, W*3/4, H*3/4);
2233        fClipPath.addRect(r, SkPath::kCW_Direction);
2234#endif
2235    }
2236
2237    fZoomCenterX = SkScalarHalf(this->width());
2238    fZoomCenterY = SkScalarHalf(this->height());
2239
2240#ifdef SK_BUILD_FOR_ANDROID
2241    // FIXME: The first draw after a size change does not work on Android, so
2242    // we post an invalidate.
2243    this->postInvalDelay();
2244#endif
2245    this->updateTitle();    // to refresh our config
2246    fDevManager->windowSizeChanged(this);
2247
2248    if (fTilingMode != kNo_Tiling && SampleView::IsSampleView(view)) {
2249        ((SampleView*)view)->onTileSizeChanged(this->tileSize());
2250    }
2251}
2252
2253///////////////////////////////////////////////////////////////////////////////
2254
2255static const char is_sample_view_tag[] = "sample-is-sample-view";
2256static const char repeat_count_tag[] = "sample-set-repeat-count";
2257static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2258
2259bool SampleView::IsSampleView(SkView* view) {
2260    SkEvent evt(is_sample_view_tag);
2261    return view->doQuery(&evt);
2262}
2263
2264bool SampleView::SetRepeatDraw(SkView* view, int count) {
2265    SkEvent evt(repeat_count_tag);
2266    evt.setFast32(count);
2267    return view->doEvent(evt);
2268}
2269
2270bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2271    SkEvent evt;
2272    evt.setS32(set_use_pipe_tag, state);
2273    return view->doEvent(evt);
2274}
2275
2276bool SampleView::onEvent(const SkEvent& evt) {
2277    if (evt.isType(repeat_count_tag)) {
2278        fRepeatCount = evt.getFast32();
2279        return true;
2280    }
2281
2282    int32_t pipeHolder;
2283    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2284        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2285        return true;
2286    }
2287
2288    if (evt.isType("debug-hit-test")) {
2289        fDebugHitTest = true;
2290        evt.findS32("debug-hit-test-x", &fDebugHitTestLoc.fX);
2291        evt.findS32("debug-hit-test-y", &fDebugHitTestLoc.fY);
2292        this->inval(NULL);
2293        return true;
2294    }
2295
2296    return this->INHERITED::onEvent(evt);
2297}
2298
2299bool SampleView::onQuery(SkEvent* evt) {
2300    if (evt->isType(is_sample_view_tag)) {
2301        return true;
2302    }
2303    return this->INHERITED::onQuery(evt);
2304}
2305
2306
2307class SimplePC : public SkGPipeController {
2308public:
2309    SimplePC(SkCanvas* target);
2310    ~SimplePC();
2311
2312    virtual void* requestBlock(size_t minRequest, size_t* actual);
2313    virtual void notifyWritten(size_t bytes);
2314
2315private:
2316    SkGPipeReader   fReader;
2317    void*           fBlock;
2318    size_t          fBlockSize;
2319    size_t          fBytesWritten;
2320    int             fAtomsWritten;
2321    SkGPipeReader::Status   fStatus;
2322
2323    size_t        fTotalWritten;
2324};
2325
2326SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2327    fBlock = NULL;
2328    fBlockSize = fBytesWritten = 0;
2329    fStatus = SkGPipeReader::kDone_Status;
2330    fTotalWritten = 0;
2331    fAtomsWritten = 0;
2332    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2333}
2334
2335SimplePC::~SimplePC() {
2336//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2337    if (fTotalWritten) {
2338        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2339                 fAtomsWritten, fStatus);
2340#ifdef  PIPE_FILE
2341        //File is open in append mode
2342        FILE* f = fopen(FILE_PATH, "ab");
2343        SkASSERT(f != NULL);
2344        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2345        fclose(f);
2346#endif
2347#ifdef PIPE_NET
2348        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2349            gServer.acceptConnections();
2350            gServer.writePacket(fBlock, fTotalWritten);
2351        }
2352#endif
2353    }
2354    sk_free(fBlock);
2355}
2356
2357void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2358    sk_free(fBlock);
2359
2360    fBlockSize = minRequest * 4;
2361    fBlock = sk_malloc_throw(fBlockSize);
2362    fBytesWritten = 0;
2363    *actual = fBlockSize;
2364    return fBlock;
2365}
2366
2367void SimplePC::notifyWritten(size_t bytes) {
2368    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2369    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2370    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2371    fBytesWritten += bytes;
2372    fTotalWritten += bytes;
2373
2374    fAtomsWritten += 1;
2375}
2376
2377void SampleView::draw(SkCanvas* canvas) {
2378    if (SkOSMenu::kOffState == fPipeState) {
2379        this->INHERITED::draw(canvas);
2380    } else {
2381        SkGPipeWriter writer;
2382        SimplePC controller(canvas);
2383        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2384                               &SkImageDecoder::DecodeMemory,
2385                               &canvas->getTotalMatrix());
2386        SkGPipeController* pc;
2387        if (SkOSMenu::kMixedState == fPipeState) {
2388            pc = &tc;
2389        } else {
2390            pc = &controller;
2391        }
2392        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2393
2394        canvas = writer.startRecording(pc, flags);
2395        //Must draw before controller goes out of scope and sends data
2396        this->INHERITED::draw(canvas);
2397        //explicitly end recording to ensure writer is flushed before the memory
2398        //is freed in the deconstructor of the controller
2399        writer.endRecording();
2400    }
2401}
2402
2403#include "SkBounder.h"
2404
2405class DebugHitTestBounder : public SkBounder {
2406public:
2407    DebugHitTestBounder(int x, int y) {
2408        fLoc.set(x, y);
2409    }
2410
2411    virtual bool onIRect(const SkIRect& bounds) SK_OVERRIDE {
2412        if (bounds.contains(fLoc.x(), fLoc.y())) {
2413            //
2414            // Set a break-point here to see what was being drawn under
2415            // the click point (just needed a line of code to stop the debugger)
2416            //
2417            bounds.centerX();
2418        }
2419        return true;
2420    }
2421
2422private:
2423    SkIPoint fLoc;
2424    typedef SkBounder INHERITED;
2425};
2426
2427void SampleView::onDraw(SkCanvas* canvas) {
2428    this->onDrawBackground(canvas);
2429
2430    DebugHitTestBounder bounder(fDebugHitTestLoc.x(), fDebugHitTestLoc.y());
2431    if (fDebugHitTest) {
2432        canvas->setBounder(&bounder);
2433    }
2434
2435    for (int i = 0; i < fRepeatCount; i++) {
2436        SkAutoCanvasRestore acr(canvas, true);
2437        this->onDrawContent(canvas);
2438    }
2439
2440    fDebugHitTest = false;
2441    canvas->setBounder(NULL);
2442}
2443
2444void SampleView::onDrawBackground(SkCanvas* canvas) {
2445    canvas->drawColor(fBGColor);
2446}
2447
2448///////////////////////////////////////////////////////////////////////////////
2449
2450template <typename T> void SkTBSort(T array[], int count) {
2451    for (int i = 1; i < count - 1; i++) {
2452        bool didSwap = false;
2453        for (int j = count - 1; j > i; --j) {
2454            if (array[j] < array[j-1]) {
2455                T tmp(array[j-1]);
2456                array[j-1] = array[j];
2457                array[j] = tmp;
2458                didSwap = true;
2459            }
2460        }
2461        if (!didSwap) {
2462            break;
2463        }
2464    }
2465
2466    for (int k = 0; k < count - 1; k++) {
2467        SkASSERT(!(array[k+1] < array[k]));
2468    }
2469}
2470
2471#include "SkRandom.h"
2472
2473static void rand_rect(SkIRect* rect, SkRandom& rand) {
2474    int bits = 8;
2475    int shift = 32 - bits;
2476    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2477              rand.nextU() >> shift, rand.nextU() >> shift);
2478    rect->sort();
2479}
2480
2481static void dumpRect(const SkIRect& r) {
2482    SkDebugf(" { %d, %d, %d, %d },\n",
2483             r.fLeft, r.fTop,
2484             r.fRight, r.fBottom);
2485}
2486
2487static void test_rects(const SkIRect rect[], int count) {
2488    SkRegion rgn0, rgn1;
2489
2490    for (int i = 0; i < count; i++) {
2491        rgn0.op(rect[i], SkRegion::kUnion_Op);
2492     //   dumpRect(rect[i]);
2493    }
2494    rgn1.setRects(rect, count);
2495
2496    if (rgn0 != rgn1) {
2497        SkDebugf("\n");
2498        for (int i = 0; i < count; i++) {
2499            dumpRect(rect[i]);
2500        }
2501        SkDebugf("\n");
2502    }
2503}
2504
2505static void test() {
2506    size_t i;
2507
2508    const SkIRect r0[] = {
2509        { 0, 0, 1, 1 },
2510        { 2, 2, 3, 3 },
2511    };
2512    const SkIRect r1[] = {
2513        { 0, 0, 1, 3 },
2514        { 1, 1, 2, 2 },
2515        { 2, 0, 3, 3 },
2516    };
2517    const SkIRect r2[] = {
2518        { 0, 0, 1, 2 },
2519        { 2, 1, 3, 3 },
2520        { 4, 0, 5, 1 },
2521        { 6, 0, 7, 4 },
2522    };
2523
2524    static const struct {
2525        const SkIRect* fRects;
2526        int            fCount;
2527    } gRecs[] = {
2528        { r0, SK_ARRAY_COUNT(r0) },
2529        { r1, SK_ARRAY_COUNT(r1) },
2530        { r2, SK_ARRAY_COUNT(r2) },
2531    };
2532
2533    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2534        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2535    }
2536
2537    SkRandom rand;
2538    for (i = 0; i < 10000; i++) {
2539        SkRegion rgn0, rgn1;
2540
2541        const int N = 8;
2542        SkIRect rect[N];
2543        for (int j = 0; j < N; j++) {
2544            rand_rect(&rect[j], rand);
2545        }
2546        test_rects(rect, N);
2547    }
2548}
2549
2550// FIXME: this should be in a header
2551SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2552SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2553    if (false) { // avoid bit rot, suppress warning
2554        test();
2555    }
2556    return new SampleWindow(hwnd, argc, argv, NULL);
2557}
2558
2559// FIXME: this should be in a header
2560void get_preferred_size(int* x, int* y, int* width, int* height);
2561void get_preferred_size(int* x, int* y, int* width, int* height) {
2562    *x = 10;
2563    *y = 50;
2564    *width = 640;
2565    *height = 480;
2566}
2567
2568#ifdef SK_BUILD_FOR_IOS
2569void save_args(int argc, char *argv[]) {
2570}
2571#endif
2572
2573// FIXME: this should be in a header
2574void application_init();
2575void application_init() {
2576//    setenv("ANDROID_ROOT", "../../../data", 0);
2577#ifdef SK_BUILD_FOR_MAC
2578    setenv("ANDROID_ROOT", "/android/device/data", 0);
2579#endif
2580    SkGraphics::Init();
2581    SkEvent::Init();
2582}
2583
2584// FIXME: this should be in a header
2585void application_term();
2586void application_term() {
2587    SkEvent::Term();
2588    SkGraphics::Term();
2589}
2590