| |
| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "gm.h" |
| |
| #include "SkColorPriv.h" |
| #include "SkShader.h" |
| |
| namespace skiagm { |
| |
| class BigMatrixGM : public GM { |
| public: |
| BigMatrixGM() { |
| this->setBGColor(0xFF66AA99); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("bigmatrix"); |
| } |
| |
| virtual SkISize onISize() { |
| return make_isize(50, 50); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| SkMatrix m; |
| m.reset(); |
| m.setRotate(33 * SK_Scalar1); |
| m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1); |
| m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1); |
| canvas->concat(m); |
| |
| SkPaint paint; |
| paint.setColor(SK_ColorRED); |
| paint.setAntiAlias(true); |
| |
| bool success = m.invert(&m); |
| |
| SkPath path; |
| |
| SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1}; |
| SkScalar small = 1 / (500 * SK_Scalar1); |
| |
| m.mapPoints(&pt, 1); |
| path.addCircle(pt.fX, pt.fY, small); |
| canvas->drawPath(path, paint); |
| |
| pt.set(30 * SK_Scalar1, 10 * SK_Scalar1); |
| m.mapPoints(&pt, 1); |
| SkRect rect = {pt.fX - small, pt.fY - small, |
| pt.fX + small, pt.fY + small}; |
| canvas->drawRect(rect, paint); |
| |
| SkBitmap bmp; |
| bmp.setConfig(SkBitmap::kARGB_8888_Config, 2, 2); |
| bmp.allocPixels(); |
| bmp.lockPixels(); |
| uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels()); |
| pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00); |
| pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00); |
| pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00); |
| pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF); |
| bmp.unlockPixels(); |
| pt.set(30 * SK_Scalar1, 30 * SK_Scalar1); |
| m.mapPoints(&pt, 1); |
| SkShader* shader = SkShader::CreateBitmapShader( |
| bmp, |
| SkShader::kRepeat_TileMode, |
| SkShader::kRepeat_TileMode); |
| SkMatrix s; |
| s.reset(); |
| s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000); |
| shader->setLocalMatrix(s); |
| paint.setShader(shader)->unref(); |
| paint.setAntiAlias(false); |
| paint.setFilterBitmap(true); |
| rect.setLTRB(pt.fX - small, pt.fY - small, |
| pt.fX + small, pt.fY + small); |
| canvas->drawRect(rect, paint); |
| } |
| |
| private: |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new BigMatrixGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |
| |