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Unified Diff: samplecode/SampleAnimatedText.cpp

Issue 1408063015: Revert of Add text animation sample; tweak DrawShip sample (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 5 years, 1 month ago
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Index: samplecode/SampleAnimatedText.cpp
diff --git a/samplecode/SampleAnimatedText.cpp b/samplecode/SampleAnimatedText.cpp
deleted file mode 100755
index e950472901c9582ccba275af1429e6ed003aee12..0000000000000000000000000000000000000000
--- a/samplecode/SampleAnimatedText.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * 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);
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