Revert of Add text animation sample; tweak DrawShip sample

samplecode/SampleAnimatedText.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SampleCode.h"
-#include "SkView.h"
-#include "SkCanvas.h"
-#include "SkUtils.h"
-#include "SkColorPriv.h"
-#include "SkColorFilter.h"
-#include "SkGpuDevice.h"
-#include "SkRandom.h"
-#include "SkSystemEventTypes.h"
-#include "SkTime.h"
-#include "SkTypeface.h"
-#include "SkXfermode.h"
-#include "Timer.h"
-
-#include "GrContext.h"
-
-SkRandom gRand;
-
-static void DrawTheText(SkCanvas* canvas, const char text[], size_t length, SkScalar x, SkScalar y,
-                        const SkPaint& paint) {
-    SkPaint p(paint);
-
-    p.setSubpixelText(true);
-    canvas->drawText(text, length, x, y, p);
-}
-
-// This sample demonstrates the cache behavior of bitmap vs. distance field text
-// It renders variously sized text with an animated scale and rotation.
-// Specifically one should:
-//   use 'D' to toggle between bitmap and distance field fonts
-//   use '2' to toggle between scaling the image by 2x
-//            -- this feature boosts the rendering out of the small point-size
-//               SDF-text special case (which falls back to bitmap fonts for small points)
-
-class AnimatedTextView : public SampleView {
-public:
-    AnimatedTextView() : fScale(1.0f), fScaleInc(0.1f), fRotation(0.0f), fSizeScale(1) {
-        fCurrentTime = 0;
-        fTimer.start();
-        memset(fTimes, 0, sizeof(fTimes));
-    }
-
-protected:
-    // overrides from SkEventSink
-    bool onQuery(SkEvent* evt) override {
-        if (SampleCode::TitleQ(*evt)) {
-            SampleCode::TitleR(evt, "AnimatedText");
-            return true;
-        }
-
-        SkUnichar uni;
-        if (SampleCode::CharQ(*evt, &uni)) {
-            if ('2' == uni) {
-                if (fSizeScale == 2) {
-                    fSizeScale = 1;
-                } else {
-                    fSizeScale = 2;
-                }
-                return true;
-            }
-        }
-        return this->INHERITED::onQuery(evt);
-    }
-
-    void onDrawContent(SkCanvas* canvas) override {
-        SkPaint paint;
-        SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromFile("/skimages/samplefont.ttf")));
-        paint.setAntiAlias(true);
-        paint.setFilterQuality(kMedium_SkFilterQuality);
-
-        SkString outString("fps: ");
-        fTimer.end();
-
-        // TODO: generalize this timing code in utils
-        fTimes[fCurrentTime] = (float)(fTimer.fWall);
-        fCurrentTime = (fCurrentTime + 1) & 0x1f;
-
-        float meanTime = 0.0f;
-        for (int i = 0; i < 32; ++i) {
-            meanTime += fTimes[i];
-        }
-        meanTime /= 32.f;
-        SkScalar fps = 1000.f / meanTime;
-        outString.appendScalar(fps);
-        outString.append(" ms: ");
-        outString.appendScalar(meanTime);
-
-        SkString modeString("Text scale: ");
-        modeString.appendU32(fSizeScale);
-        modeString.append("x");
-
-        fTimer.start();
-
-        canvas->save();
-
-        SkBaseDevice* device = canvas->getDevice_just_for_deprecated_compatibility_testing();
-        GrContext* grContext = canvas->getGrContext();
-        if (grContext) {
-            grContext->drawFontCache(SkRect::MakeXYWH(512, 10, 512, 512), kA8_GrMaskFormat, paint,
-                                     reinterpret_cast<SkGpuDevice*>(device)->accessRenderTarget());
-        }
-
-        canvas->translate(180, 180);
-        canvas->rotate(fRotation);
-        canvas->scale(fScale, fScale);
-        canvas->translate(-180, -180);
-
-        const char* text = "Hamburgefons";
-        size_t length = strlen(text);
-
-        SkScalar y = SkIntToScalar(0);
-        for (int i = 12; i <= 26; i++) {
-            paint.setTextSize(SkIntToScalar(i*fSizeScale));
-            y += paint.getFontSpacing();
-            DrawTheText(canvas, text, length, SkIntToScalar(110), y, paint);
-        }
-        canvas->restore();
-
-        paint.setTextSize(16);
-        canvas->drawText(outString.c_str(), outString.size(), 512.f, 540.f, paint);
-        canvas->drawText(modeString.c_str(), modeString.size(), 768.f, 540.f, paint);
-    }
-
-    bool onAnimate(const SkAnimTimer& timer) override {
-        // We add noise to the scale and rotation animations to 
-        // keep the font atlas from falling into a steady state
-        fRotation += (1.0f + gRand.nextRangeF(-0.1f, 0.1f));
-        fScale += (fScaleInc + gRand.nextRangeF(-0.025f, 0.025f));
-        if (fScale >= 2.0f) {
-            fScaleInc = -0.1f;
-        } else if (fScale <= 1.0f) {
-            fScaleInc = 0.1f;
-        }
-        return true;
-    }
-
-private:
-    float fScale;
-    float fScaleInc;
-    float fRotation;
-    int   fSizeScale;
-
-    WallTimer   fTimer;
-    float       fTimes[32];
-    int         fCurrentTime;
-
-
-    typedef SampleView INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-static SkView* MyFactory() { return new AnimatedTextView; }
-static SkViewRegister reg(MyFactory);