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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 "SkBlurMask.h"
#include "SkBlurDrawLooper.h"
#include "SkCanvas.h"
#include "SkPath.h"
#include "SkPathMeasure.h"
#define REPEAT_COUNT 1
static void textStrokePath(SkCanvas* canvas) {
SkPaint paint;
SkPath path;
SkRect rect;
canvas->save();
canvas->scale(SkIntToScalar(250),SkIntToScalar(250));
rect.set(0.0f, 0.21f,
0.78f, 0.99f);
path.addArc(rect, SkIntToScalar(280), SkIntToScalar(350));
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(0xFFFF0000);
paint.setTextSize(0.085f);
paint.setStrokeWidth(.005f);
canvas->drawPath(path, paint);
paint.setLooper(SkBlurDrawLooper::Make(SK_ColorBLACK, SkBlurMask::ConvertRadiusToSigma(0.002f),
0.0f, 0.0f));
const char* text = "DRAWING STROKED TEXT WITH A BLUR ON A PATH";
size_t len = strlen(text);
canvas->drawTextOnPathHV(text, len, path, 0,
-0.025f, paint);
canvas->restore();
}
static void textPathMatrix(SkCanvas* canvas) {
SkPaint paint;
SkPath path;
SkMatrix matrix;
path.moveTo(SkIntToScalar(050), SkIntToScalar(200));
path.quadTo(SkIntToScalar(250), SkIntToScalar(000),
SkIntToScalar(450), SkIntToScalar(200));
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawPath(path, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setTextSize(SkIntToScalar(48));
paint.setTextAlign(SkPaint::kRight_Align);
const char* text = "Reflection";
size_t len = strlen(text);
SkPathMeasure meas(path, false);
SkScalar pathLen = meas.getLength();
canvas->drawTextOnPath(text, len, path, nullptr, paint);
paint.setColor(SK_ColorRED);
matrix.setScale(-SK_Scalar1, SK_Scalar1);
matrix.postTranslate(pathLen, 0);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
paint.setColor(SK_ColorBLUE);
matrix.setScale(SK_Scalar1, -SK_Scalar1);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
paint.setColor(SK_ColorGREEN);
matrix.setScale(-SK_Scalar1, -SK_Scalar1);
matrix.postTranslate(pathLen, 0);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
}
class TextOnPathView : public SampleView {
public:
SkPath fPath;
SkScalar fHOffset;
protected:
void onOnceBeforeDraw() override {
SkRect r;
r.set(SkIntToScalar(100), SkIntToScalar(100),
SkIntToScalar(300), SkIntToScalar(300));
fPath.addOval(r);
fPath.offset(SkIntToScalar(-50), SkIntToScalar(-50));
fHOffset = SkIntToScalar(50);
}
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Text On Path");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(48));
const char* text = "Hamburgefons";
size_t len = strlen(text);
for (int j = 0; j < REPEAT_COUNT; j++) {
SkScalar x = fHOffset;
paint.setColor(SK_ColorBLACK);
canvas->drawTextOnPathHV(text, len, fPath,
x, paint.getTextSize()/2, paint);
paint.setColor(SK_ColorRED);
canvas->drawTextOnPathHV(text, len, fPath,
x + SkIntToScalar(50), 0, paint);
paint.setColor(SK_ColorBLUE);
canvas->drawTextOnPathHV(text, len, fPath,
x + SkIntToScalar(100), -paint.getTextSize()/2, paint);
}
paint.setColor(SK_ColorGREEN);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawPath(fPath, paint);
canvas->translate(SkIntToScalar(275), 0);
textStrokePath(canvas);
canvas->translate(SkIntToScalar(-275), SkIntToScalar(250));
textPathMatrix(canvas);
}
SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
fHints += 1;
return this->INHERITED::onFindClickHandler(x, y, modi);
}
private:
int fHints;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() {
return new TextOnPathView;
}
static SkViewRegister reg(MyFactory);
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