| |
| /* |
| * 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); |