1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "bench/SKPAnimationBench.h"
9 #include "include/core/SkSurface.h"
10 #include "tools/flags/CommandLineFlags.h"
11
SKPAnimationBench(const char * name,const SkPicture * pic,const SkIRect & clip,sk_sp<Animation> animation,bool doLooping)12 SKPAnimationBench::SKPAnimationBench(const char* name, const SkPicture* pic, const SkIRect& clip,
13 sk_sp<Animation> animation, bool doLooping)
14 : INHERITED(name, pic, clip, 1.0, doLooping)
15 , fAnimation(std::move(animation)) {
16 fUniqueName.printf("%s_%s", name, fAnimation->getTag());
17 }
18
onGetUniqueName()19 const char* SKPAnimationBench::onGetUniqueName() {
20 return fUniqueName.c_str();
21 }
22
onPerCanvasPreDraw(SkCanvas * canvas)23 void SKPAnimationBench::onPerCanvasPreDraw(SkCanvas* canvas) {
24 INHERITED::onPerCanvasPreDraw(canvas);
25 fDevBounds = canvas->getDeviceClipBounds();
26 SkAssertResult(!fDevBounds.isEmpty());
27 }
28
drawPicture()29 void SKPAnimationBench::drawPicture() {
30 for (int j = 0; j < this->tileRects().count(); ++j) {
31 SkMatrix trans = SkMatrix::Translate(-1.f * this->tileRects()[j].fLeft,
32 -1.f * this->tileRects()[j].fTop);
33 fAnimation->preConcatFrameMatrix(fAnimationTime.nextRangeF(0, 1000), fDevBounds, &trans);
34 this->surfaces()[j]->getCanvas()->drawPicture(this->picture(), &trans, nullptr);
35 }
36
37 for (int j = 0; j < this->tileRects().count(); ++j) {
38 this->surfaces()[j]->flush();
39 }
40 }
41
42 class ZoomAnimation : public SKPAnimationBench::Animation {
43 public:
ZoomAnimation(SkScalar zoomMax,double zoomPeriodMs)44 ZoomAnimation(SkScalar zoomMax, double zoomPeriodMs)
45 : fZoomMax(zoomMax)
46 , fZoomPeriodMs(zoomPeriodMs) {
47 }
48
getTag()49 const char* getTag() override { return "zoom"; }
50
preConcatFrameMatrix(double animationTimeMs,const SkIRect & devBounds,SkMatrix * drawMatrix)51 void preConcatFrameMatrix(double animationTimeMs, const SkIRect& devBounds,
52 SkMatrix* drawMatrix) override {
53 double t = fmod(animationTimeMs / fZoomPeriodMs, 1.0); // t is in [0, 1).
54 t = fabs(2 * t - 1); // Make t ping-pong between 0 and 1
55 SkScalar zoom = static_cast<SkScalar>(pow(fZoomMax, t));
56
57 SkPoint center = SkPoint::Make((devBounds.fLeft + devBounds.fRight) / 2.0f,
58 (devBounds.fTop + devBounds.fBottom) / 2.0f);
59 drawMatrix->preTranslate(center.fX, center.fY);
60 drawMatrix->preScale(zoom, zoom);
61 drawMatrix->preTranslate(-center.fX, -center.fY);
62 }
63
64 private:
65 double fZoomMax;
66 double fZoomPeriodMs;
67 };
68
MakeZoomAnimation(SkScalar zoomMax,double zoomPeriodMs)69 sk_sp<SKPAnimationBench::Animation> SKPAnimationBench::MakeZoomAnimation(SkScalar zoomMax,
70 double zoomPeriodMs) {
71 return sk_make_sp<ZoomAnimation>(zoomMax, zoomPeriodMs);
72 }
73