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/*
* 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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGraphics.h"
#include "SkRandom.h"
#include "SkDashPathEffect.h"
#include "SkShader.h"
static void setBitmapDash(SkPaint* paint, int width) {
SkColor c = paint->getColor();
SkBitmap bm;
bm.allocN32Pixels(2, 1);
bm.lockPixels();
*bm.getAddr32(0, 0) = SkPreMultiplyARGB(0xFF, SkColorGetR(c),
SkColorGetG(c), SkColorGetB(c));
*bm.getAddr32(1, 0) = 0;
bm.unlockPixels();
SkMatrix matrix;
matrix.setScale(SkIntToScalar(width), SK_Scalar1);
SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
SkShader::kClamp_TileMode, &matrix);
paint->setShader(s)->unref();
}
class DashView : public SampleView {
public:
DashView() {
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Dash");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
static const char* gStr[] = {
"11",
"44",
"112233",
"411327463524",
};
SkPaint paint;
paint.setStrokeWidth(SkIntToScalar(1));
SkScalar x0 = SkIntToScalar(10);
SkScalar y0 = SkIntToScalar(10);
SkScalar x1 = x0 + SkIntToScalar(1000);
for (size_t i = 0; i < SK_ARRAY_COUNT(gStr); i++) {
SkScalar interval[12];
size_t len = SkMin32(strlen(gStr[i]), SK_ARRAY_COUNT(interval));
for (size_t j = 0; j < len; j++) {
interval[j] = SkIntToScalar(gStr[i][j] - '0');
}
SkDashPathEffect dash(interval, len, 0);
paint.setPathEffect(&dash);
canvas->drawLine(x0, y0, x1, y0, paint);
paint.setPathEffect(nullptr);
y0 += paint.getStrokeWidth() * 3;
}
setBitmapDash(&paint, 3);
canvas->drawLine(x0, y0, x1, y0, paint);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new DashView; }
static SkViewRegister reg(MyFactory);
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