ab244f045a
This reverts commit9d5f66d9c2
. Reason for revert: Leon landed Android fixes. Original change's description: > Revert "Reland: Remove SkLights include from SkCanvas.h" > > This reverts commitfed00319c9
. > > Reason for revert: breaking the Android roll. > > Original change's description: > > Reland: Remove SkLights include from SkCanvas.h > > > > SkLights.h pulls in a bunch of other headers and is not needed (fwdecl > > works fine). > > > > Change-Id: I3ed97cd7861e51dcb7cfa7950a97b420dbc6fbfb > > TBR=reed@google.com > > Reviewed-on: https://skia-review.googlesource.com/15143 > > Commit-Queue: Florin Malita <fmalita@chromium.org> > > Reviewed-by: Florin Malita <fmalita@chromium.org> > > > > TBR=fmalita@chromium.org,reed@google.com > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > > Change-Id: I3b0e69f1d04d160f16a5567b09982d35cc9ca84e > Reviewed-on: https://skia-review.googlesource.com/15195 > Reviewed-by: Florin Malita <fmalita@chromium.org> > Commit-Queue: Florin Malita <fmalita@chromium.org> > TBR=msarett@google.com,reviews@skia.org,fmalita@chromium.org,reed@google.com NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Change-Id: I0a1c2f9df61f16987ab72dfb4f3a205fbcc37667 Reviewed-on: https://skia-review.googlesource.com/15229 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Florin Malita <fmalita@chromium.org>
165 lines
4.8 KiB
C++
165 lines
4.8 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "SkUtils.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkImage.h"
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#include "SkRandom.h"
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#include "SkSystemEventTypes.h"
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#include "SkTime.h"
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#include "SkTypeface.h"
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#include "Timer.h"
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#if SK_SUPPORT_GPU
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#include "GrContext.h"
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#endif
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SkRandom gRand;
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static void DrawTheText(SkCanvas* canvas, const char text[], size_t length, SkScalar x, SkScalar y,
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const SkPaint& paint) {
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SkPaint p(paint);
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p.setSubpixelText(true);
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canvas->drawText(text, length, x, y, p);
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}
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// This sample demonstrates the cache behavior of bitmap vs. distance field text
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// It renders variously sized text with an animated scale and rotation.
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// Specifically one should:
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// use 'D' to toggle between bitmap and distance field fonts
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// use '2' to toggle between scaling the image by 2x
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// -- this feature boosts the rendering out of the small point-size
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// SDF-text special case (which falls back to bitmap fonts for small points)
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class AnimatedTextView : public SampleView {
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public:
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AnimatedTextView() : fScale(1.0f), fScaleInc(0.1f), fRotation(0.0f), fSizeScale(1) {
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fCurrentTime = 0;
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fTimer.start();
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memset(fTimes, 0, sizeof(fTimes));
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}
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protected:
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// overrides from SkEventSink
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bool onQuery(SkEvent* evt) override {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "AnimatedText");
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return true;
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}
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SkUnichar uni;
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if (SampleCode::CharQ(*evt, &uni)) {
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if ('2' == uni) {
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if (fSizeScale == 2) {
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fSizeScale = 1;
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} else {
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fSizeScale = 2;
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}
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return true;
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}
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}
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return this->INHERITED::onQuery(evt);
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}
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void onDrawContent(SkCanvas* canvas) override {
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SkPaint paint;
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paint.setTypeface(SkTypeface::MakeFromFile("/skimages/samplefont.ttf"));
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paint.setAntiAlias(true);
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paint.setFilterQuality(kMedium_SkFilterQuality);
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SkString outString("fps: ");
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fTimer.end();
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// TODO: generalize this timing code in utils
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fTimes[fCurrentTime] = (float)(fTimer.fWall);
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fCurrentTime = (fCurrentTime + 1) & 0x1f;
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float meanTime = 0.0f;
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for (int i = 0; i < 32; ++i) {
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meanTime += fTimes[i];
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}
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meanTime /= 32.f;
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SkScalar fps = 1000.f / meanTime;
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outString.appendScalar(fps);
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outString.append(" ms: ");
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outString.appendScalar(meanTime);
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SkString modeString("Text scale: ");
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modeString.appendU32(fSizeScale);
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modeString.append("x");
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fTimer.start();
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canvas->save();
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#if SK_SUPPORT_GPU
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GrContext* grContext = canvas->getGrContext();
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if (grContext) {
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sk_sp<SkImage> image =
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grContext->getFontAtlasImage_ForTesting(GrMaskFormat::kA8_GrMaskFormat);
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canvas->drawImageRect(image,
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SkRect::MakeXYWH(512.0f, 10.0f, 512.0f, 512.0f), &paint);
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}
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#endif
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canvas->translate(180, 180);
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canvas->rotate(fRotation);
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canvas->scale(fScale, fScale);
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canvas->translate(-180, -180);
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const char* text = "Hamburgefons";
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size_t length = strlen(text);
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SkScalar y = SkIntToScalar(0);
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for (int i = 12; i <= 26; i++) {
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paint.setTextSize(SkIntToScalar(i*fSizeScale));
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y += paint.getFontSpacing();
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DrawTheText(canvas, text, length, SkIntToScalar(110), y, paint);
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}
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canvas->restore();
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paint.setTextSize(16);
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// canvas->drawString(outString, 512.f, 540.f, paint);
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canvas->drawString(modeString, 768.f, 540.f, paint);
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}
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bool onAnimate(const SkAnimTimer& timer) override {
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// We add noise to the scale and rotation animations to
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// keep the font atlas from falling into a steady state
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fRotation += (1.0f + gRand.nextRangeF(-0.1f, 0.1f));
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fScale += (fScaleInc + gRand.nextRangeF(-0.025f, 0.025f));
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if (fScale >= 2.0f) {
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fScaleInc = -0.1f;
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} else if (fScale <= 1.0f) {
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fScaleInc = 0.1f;
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}
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return true;
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}
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private:
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float fScale;
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float fScaleInc;
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float fRotation;
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int fSizeScale;
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WallTimer fTimer;
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float fTimes[32];
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int fCurrentTime;
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new AnimatedTextView; }
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static SkViewRegister reg(MyFactory);
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