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/SkMultiPictureDraw.h"
10 #include "include/core/SkSurface.h"
11 #include "tools/flags/CommandLineFlags.h"
12
SKPAnimationBench(const char * name,const SkPicture * pic,const SkIRect & clip,sk_sp<Animation> animation,bool doLooping)13 SKPAnimationBench::SKPAnimationBench(const char* name, const SkPicture* pic, const SkIRect& clip,
14 sk_sp<Animation> animation, bool doLooping)
15 : INHERITED(name, pic, clip, 1.0, false, doLooping)
16 , fAnimation(std::move(animation)) {
17 fUniqueName.printf("%s_%s", name, fAnimation->getTag());
18 }
19
onGetUniqueName()20 const char* SKPAnimationBench::onGetUniqueName() {
21 return fUniqueName.c_str();
22 }
23
onPerCanvasPreDraw(SkCanvas * canvas)24 void SKPAnimationBench::onPerCanvasPreDraw(SkCanvas* canvas) {
25 INHERITED::onPerCanvasPreDraw(canvas);
26 fDevBounds = canvas->getDeviceClipBounds();
27 SkAssertResult(!fDevBounds.isEmpty());
28 }
29
drawPicture()30 void SKPAnimationBench::drawPicture() {
31 for (int j = 0; j < this->tileRects().count(); ++j) {
32 SkMatrix trans = SkMatrix::MakeTrans(-1.f * this->tileRects()[j].fLeft,
33 -1.f * this->tileRects()[j].fTop);
34 fAnimation->preConcatFrameMatrix(fAnimationTime.nextRangeF(0, 1000), fDevBounds, &trans);
35 this->surfaces()[j]->getCanvas()->drawPicture(this->picture(), &trans, nullptr);
36 }
37
38 for (int j = 0; j < this->tileRects().count(); ++j) {
39 this->surfaces()[j]->getCanvas()->flush();
40 }
41 }
42
43 class ZoomAnimation : public SKPAnimationBench::Animation {
44 public:
ZoomAnimation(SkScalar zoomMax,double zoomPeriodMs)45 ZoomAnimation(SkScalar zoomMax, double zoomPeriodMs)
46 : fZoomMax(zoomMax)
47 , fZoomPeriodMs(zoomPeriodMs) {
48 }
49
getTag()50 virtual const char* getTag() { return "zoom"; }
51
preConcatFrameMatrix(double animationTimeMs,const SkIRect & devBounds,SkMatrix * drawMatrix)52 virtual void preConcatFrameMatrix(double animationTimeMs, const SkIRect& devBounds,
53 SkMatrix* drawMatrix) {
54 double t = fmod(animationTimeMs / fZoomPeriodMs, 1.0); // t is in [0, 1).
55 t = fabs(2 * t - 1); // Make t ping-pong between 0 and 1
56 SkScalar zoom = static_cast<SkScalar>(pow(fZoomMax, t));
57
58 SkPoint center = SkPoint::Make((devBounds.fLeft + devBounds.fRight) / 2.0f,
59 (devBounds.fTop + devBounds.fBottom) / 2.0f);
60 drawMatrix->preTranslate(center.fX, center.fY);
61 drawMatrix->preScale(zoom, zoom);
62 drawMatrix->preTranslate(-center.fX, -center.fY);
63 }
64
65 private:
66 double fZoomMax;
67 double fZoomPeriodMs;
68 };
69
MakeZoomAnimation(SkScalar zoomMax,double zoomPeriodMs)70 sk_sp<SKPAnimationBench::Animation> SKPAnimationBench::MakeZoomAnimation(SkScalar zoomMax,
71 double zoomPeriodMs) {
72 return sk_make_sp<ZoomAnimation>(zoomMax, zoomPeriodMs);
73 }
74