blob: ca5e755f722f6c4c0f6adc13a825c906b9a47efa [file] [log] [blame]
/*
* 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 "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkPoint.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "tools/ToolUtils.h"
#include <string.h>
namespace skiagm {
static void makebm(SkBitmap* bm, int w, int h) {
bm->allocN32Pixels(w, h);
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkScalar s = SkIntToScalar(std::min(w, h));
const SkPoint kPts0[] = { { 0, 0 }, { s, s } };
const SkPoint kPts1[] = { { s/2, 0 }, { s/2, s } };
const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 };
const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 };
SkPaint paint;
paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos,
std::size(kColors0), SkTileMode::kClamp));
canvas.drawPaint(paint);
paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos,
std::size(kColors1), SkTileMode::kClamp));
canvas.drawPaint(paint);
}
///////////////////////////////////////////////////////////////////////////////
struct LabeledMatrix {
SkMatrix fMatrix;
const char* fLabel;
};
constexpr int kPointSize = 300;
class ShaderPathGM : public GM {
public:
ShaderPathGM() {
this->setBGColor(0xFFDDDDDD);
}
protected:
SkString getName() const override { return SkString("shaderpath"); }
SkISize getISize() override { return SkISize::Make(820, 930); }
void onOnceBeforeDraw() override {
makebm(&fBmp, kPointSize / 4, kPointSize / 4);
}
void onDraw(SkCanvas* canvas) override {
SkPaint bmpPaint;
bmpPaint.setAntiAlias(true);
bmpPaint.setAlphaf(0.5f);
SkSamplingOptions sampling(SkFilterMode::kLinear);
canvas->drawImage(fBmp.asImage(), 5.f, 5.f, sampling, &bmpPaint);
SkPaint outlinePaint;
outlinePaint.setStyle(SkPaint::kStroke_Style);
outlinePaint.setStrokeWidth(0.f);
canvas->translate(15.f, 15.f);
canvas->scale(2.f, 2.f);
constexpr SkTileMode kTileModes[] = {
SkTileMode::kRepeat,
SkTileMode::kMirror,
};
// position the baseline of the first path
canvas->translate(0.f, 2.25);
SkPath path;
path.moveTo(0, 40).cubicTo(10, 70, 20, 10, 30, 40);
canvas->save();
int i = 0;
for (size_t tm0 = 0; tm0 < std::size(kTileModes); ++tm0) {
for (size_t tm1 = 0; tm1 < std::size(kTileModes); ++tm1) {
SkMatrix localM;
localM.setTranslate(5.f, 5.f);
localM.postRotate(20);
localM.postScale(1.15f, .85f);
SkPaint fillPaint;
fillPaint.setAntiAlias(true);
fillPaint.setShader(fBmp.makeShader(kTileModes[tm0], kTileModes[tm1],
sampling, localM));
canvas->drawPath(path, fillPaint);
canvas->drawPath(path, outlinePaint);
canvas->translate(50.f, 0.f);
++i;
if (!(i % 2)) {
canvas->restore();
canvas->translate(0, 22.5f);
canvas->save();
}
}
}
canvas->restore();
}
private:
SkBitmap fBmp;
using INHERITED = GM;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ShaderPathGM; )
} // namespace skiagm