skia2/samplecode/SampleCamera.cpp
Mike Reed 50acf8f04b add makeShader() to SkBitmap, and deprecate SkShader version
Bug: skia:8937
Change-Id: I42f011e04937a751222bd8ecc6c69b45cf9626a2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206681
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
2019-04-08 17:56:34 +00:00

100 lines
2.7 KiB
C++

/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "AnimTimer.h"
#include "DecodeFile.h"
#include "Sample.h"
#include "SkCamera.h"
#include "SkCanvas.h"
#include "SkEmbossMaskFilter.h"
#include "SkGradientShader.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkString.h"
#include "SkUTF.h"
class CameraView : public Sample {
SkTArray<sk_sp<SkShader>> fShaders;
int fShaderIndex;
bool fFrontFace;
public:
CameraView() {
fRX = fRY = fRZ = 0;
fShaderIndex = 0;
fFrontFace = false;
for (int i = 0;; i++) {
SkString str;
str.printf("/skimages/elephant%d.jpeg", i);
SkBitmap bm;
if (decode_file(str.c_str(), &bm)) {
SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
SkRect dst = { -150, -150, 150, 150 };
SkMatrix matrix;
matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit);
fShaders.push_back(bm.makeShader(&matrix));
} else {
break;
}
}
this->setBGColor(0xFFDDDDDD);
}
protected:
bool onQuery(Sample::Event* evt) override {
if (Sample::TitleQ(*evt)) {
Sample::TitleR(evt, "Camera");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
canvas->translate(this->width()/2, this->height()/2);
Sk3DView view;
view.rotateX(fRX);
view.rotateY(fRY);
view.applyToCanvas(canvas);
SkPaint paint;
if (fShaders.count() > 0) {
bool frontFace = view.dotWithNormal(0, 0, SK_Scalar1) < 0;
if (frontFace != fFrontFace) {
fFrontFace = frontFace;
fShaderIndex = (fShaderIndex + 1) % fShaders.count();
}
paint.setAntiAlias(true);
paint.setShader(fShaders[fShaderIndex]);
paint.setFilterQuality(kLow_SkFilterQuality);
SkRect r = { -150, -150, 150, 150 };
canvas->drawRoundRect(r, 30, 30, paint);
}
}
bool onAnimate(const AnimTimer& timer) override {
if (timer.isStopped()) {
fRY = 0;
} else {
fRY = timer.scaled(90, 360);
}
return true;
}
private:
SkScalar fRX, fRY, fRZ;
typedef Sample INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_SAMPLE( return new CameraView(); )