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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 "Sk64.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkKernel33MaskFilter.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkXfermode.h"
static void lettersToBitmap(SkBitmap* dst, const char chars[],
const SkPaint& original, SkBitmap::Config config) {
SkPath path;
SkScalar x = 0;
SkScalar width;
SkPath p;
for (size_t i = 0; i < strlen(chars); i++) {
original.getTextPath(&chars[i], 1, x, 0, &p);
path.addPath(p);
original.getTextWidths(&chars[i], 1, &width);
x += width;
}
SkRect bounds = path.getBounds();
SkScalar sw = -original.getStrokeWidth();
bounds.inset(sw, sw);
path.offset(-bounds.fLeft, -bounds.fTop);
bounds.offset(-bounds.fLeft, -bounds.fTop);
int w = SkScalarRound(bounds.width());
int h = SkScalarRound(bounds.height());
SkPaint paint(original);
SkBitmap src;
src.setConfig(config, w, h);
src.allocPixels();
src.eraseColor(SK_ColorTRANSPARENT);
{
SkCanvas canvas(src);
paint.setAntiAlias(true);
paint.setColor(SK_ColorBLACK);
paint.setStyle(SkPaint::kFill_Style);
canvas.drawPath(path, paint);
}
dst->setConfig(config, w, h);
dst->allocPixels();
dst->eraseColor(SK_ColorWHITE);
{
SkCanvas canvas(*dst);
paint.setXfermodeMode(SkXfermode::kDstATop_Mode);
canvas.drawBitmap(src, 0, 0, &paint);
paint.setColor(original.getColor());
paint.setStyle(SkPaint::kStroke_Style);
canvas.drawPath(path, paint);
}
}
static void lettersToBitmap2(SkBitmap* dst, const char chars[],
const SkPaint& original, SkBitmap::Config config) {
SkPath path;
SkScalar x = 0;
SkScalar width;
SkPath p;
for (size_t i = 0; i < strlen(chars); i++) {
original.getTextPath(&chars[i], 1, x, 0, &p);
path.addPath(p);
original.getTextWidths(&chars[i], 1, &width);
x += width;
}
SkRect bounds = path.getBounds();
SkScalar sw = -original.getStrokeWidth();
bounds.inset(sw, sw);
path.offset(-bounds.fLeft, -bounds.fTop);
bounds.offset(-bounds.fLeft, -bounds.fTop);
int w = SkScalarRound(bounds.width());
int h = SkScalarRound(bounds.height());
SkPaint paint(original);
paint.setAntiAlias(true);
paint.setXfermodeMode(SkXfermode::kDstATop_Mode);
paint.setColor(original.getColor());
paint.setStyle(SkPaint::kStroke_Style);
dst->setConfig(config, w, h);
dst->allocPixels();
dst->eraseColor(SK_ColorWHITE);
SkCanvas canvas(*dst);
canvas.drawPath(path, paint);
}
class StrokeTextView : public SampleView {
bool fAA;
public:
StrokeTextView() : fAA(false) {
this->setBGColor(0xFFCC8844);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "StrokeText");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkBitmap bm;
SkPaint paint;
paint.setStrokeWidth(SkIntToScalar(6));
paint.setTextSize(SkIntToScalar(80));
// paint.setTypeface(Typeface.DEFAULT_BOLD);
lettersToBitmap(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config);
if (false) { // avoid bit rot, suppress warning
lettersToBitmap2(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config);
}
canvas->drawBitmap(bm, 0, 0);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new StrokeTextView; }
static SkViewRegister reg(MyFactory);
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