019385eb1d
Seems very one-off (esp. given SkSL). No one seems to use it. Change-Id: Iaded54c5b4183fa4aa9c318b5dbe1d410cca539a Reviewed-on: https://skia-review.googlesource.com/c/skia/+/276617 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Mike Reed <reed@google.com>
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
|
|
* Copyright 2017 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "include/core/SkCanvas.h"
|
|
#include "include/core/SkColorFilter.h"
|
|
#include "include/core/SkImage.h"
|
|
#include "include/core/SkPath.h"
|
|
#include "include/core/SkRegion.h"
|
|
#include "include/core/SkShader.h"
|
|
#include "include/effects/SkGradientShader.h"
|
|
#include "samplecode/Sample.h"
|
|
#include "src/core/SkUtils.h"
|
|
#include "tools/Resources.h"
|
|
|
|
const float gMat[] = {
|
|
.3f, .6f, .1f, 0, 0,
|
|
.3f, .6f, .1f, 0, 0,
|
|
.3f, .6f, .1f, 0, 0,
|
|
0, 0, 0, 1, 0,
|
|
};
|
|
|
|
class MixerView : public Sample {
|
|
sk_sp<SkImage> fImg;
|
|
sk_sp<SkColorFilter> fCF0;
|
|
sk_sp<SkColorFilter> fCF1;
|
|
|
|
float fWeight = 0;
|
|
float fDW = 0.02f;
|
|
|
|
public:
|
|
MixerView() {}
|
|
|
|
protected:
|
|
SkString name() override { return SkString("Mixer"); }
|
|
|
|
void dodraw(SkCanvas* canvas, sk_sp<SkColorFilter> cf0, sk_sp<SkColorFilter> cf1, float gap) {
|
|
SkPaint paint;
|
|
paint.setColorFilter(cf0);
|
|
canvas->drawImage(fImg, 0, 0, &paint);
|
|
|
|
paint.setColorFilter(SkColorFilters::Lerp(fWeight, cf0, cf1));
|
|
canvas->drawImage(fImg, fImg->width() + gap * fWeight, 0, &paint);
|
|
|
|
paint.setColorFilter(cf1);
|
|
canvas->drawImage(fImg, 2*fImg->width() + gap, 0, &paint);
|
|
}
|
|
|
|
void onDrawContent(SkCanvas* canvas) override {
|
|
if (!fImg) {
|
|
fImg = GetResourceAsImage("images/mandrill_256.png");
|
|
fCF0 = SkColorFilters::Matrix(gMat);
|
|
fCF1 = SkColorFilters::Blend(0xFF44CC88, SkBlendMode::kScreen);
|
|
}
|
|
|
|
float gap = fImg->width() * 3;
|
|
|
|
canvas->translate(10, 10);
|
|
dodraw(canvas, nullptr, fCF1, gap);
|
|
canvas->translate(0, fImg->height() + 10);
|
|
dodraw(canvas, fCF0, nullptr, gap);
|
|
canvas->translate(0, fImg->height() + 10);
|
|
dodraw(canvas, fCF0, fCF1, gap);
|
|
|
|
fWeight += fDW;
|
|
if (fWeight > 1 || fWeight < 0) {
|
|
fDW = -fDW;
|
|
}
|
|
}
|
|
|
|
virtual Click* onFindClickHandler(SkScalar x, SkScalar y, skui::ModifierKey) override {
|
|
return fRect.contains(SkScalarRoundToInt(x),
|
|
SkScalarRoundToInt(y)) ? new Click() : nullptr;
|
|
}
|
|
|
|
bool onClick(Click* click) override {
|
|
fRect.offset(click->fCurr.fX - click->fPrev.fX,
|
|
click->fCurr.fY - click->fPrev.fY);
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
SkIRect fRect;
|
|
|
|
typedef Sample INHERITED;
|
|
};
|
|
DEF_SAMPLE( return new MixerView; )
|