1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* 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 "SKPAnimationBench.h"
#include "SkCommandLineFlags.h"
#include "SkMultiPictureDraw.h"
#include "SkSurface.h"
SKPAnimationBench::SKPAnimationBench(const char* name, const SkPicture* pic, const SkIRect& clip,
Animation* animation, bool doLooping)
: INHERITED(name, pic, clip, 1.0, false, doLooping)
, fAnimation(SkRef(animation)) {
fUniqueName.printf("%s_%s", name, fAnimation->getTag());
}
const char* SKPAnimationBench::onGetUniqueName() {
return fUniqueName.c_str();
}
void SKPAnimationBench::onPerCanvasPreDraw(SkCanvas* canvas) {
INHERITED::onPerCanvasPreDraw(canvas);
SkAssertResult(canvas->getClipDeviceBounds(&fDevBounds));
fAnimationTimer.start();
}
void SKPAnimationBench::drawPicture() {
fAnimationTimer.end();
for (int j = 0; j < this->tileRects().count(); ++j) {
SkMatrix trans = SkMatrix::MakeTrans(-1.f * this->tileRects()[j].fLeft,
-1.f * this->tileRects()[j].fTop);
fAnimation->preConcatFrameMatrix(fAnimationTimer.fWall, fDevBounds, &trans);
this->surfaces()[j]->getCanvas()->drawPicture(this->picture(), &trans, nullptr);
}
for (int j = 0; j < this->tileRects().count(); ++j) {
this->surfaces()[j]->getCanvas()->flush();
}
}
class ZoomAnimation : public SKPAnimationBench::Animation {
public:
ZoomAnimation(SkScalar zoomMax, double zoomPeriodMs)
: fZoomMax(zoomMax)
, fZoomPeriodMs(zoomPeriodMs) {
}
virtual const char* getTag() { return "zoom"; }
virtual void preConcatFrameMatrix(double animationTimeMs, const SkIRect& devBounds,
SkMatrix* drawMatrix) {
double t = fmod(animationTimeMs / fZoomPeriodMs, 1.0); // t is in [0, 1).
t = fabs(2 * t - 1); // Make t ping-pong between 0 and 1
SkScalar zoom = static_cast<SkScalar>(pow(fZoomMax, t));
SkPoint center = SkPoint::Make((devBounds.fLeft + devBounds.fRight) / 2.0f,
(devBounds.fTop + devBounds.fBottom) / 2.0f);
drawMatrix->preTranslate(center.fX, center.fY);
drawMatrix->preScale(zoom, zoom);
drawMatrix->preTranslate(-center.fX, -center.fY);
}
private:
double fZoomMax;
double fZoomPeriodMs;
};
SKPAnimationBench::Animation* SKPAnimationBench::CreateZoomAnimation(SkScalar zoomMax,
double zoomPeriodMs) {
return new ZoomAnimation(zoomMax, zoomPeriodMs);
}
|
