eb9a46cbbb
This is an intermediate api, but might help us quickly get to a point where no one is creating bitmaps in a 2-step process (setConfig + alloc). BUG=skia: R=halcanary@google.com Review URL: https://codereview.chromium.org/140593005 git-svn-id: http://skia.googlecode.com/svn/trunk@13182 2bbb7eff-a529-9590-31e7-b0007b416f81
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
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/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkColorPriv.h"
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#include "SkShader.h"
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namespace skiagm {
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class BigMatrixGM : public GM {
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public:
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BigMatrixGM() {
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this->setBGColor(0xFF66AA99);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("bigmatrix");
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}
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virtual SkISize onISize() {
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return make_isize(50, 50);
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}
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virtual void onDraw(SkCanvas* canvas) {
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SkMatrix m;
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m.reset();
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m.setRotate(33 * SK_Scalar1);
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m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1);
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m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1);
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canvas->concat(m);
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SkPaint paint;
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paint.setColor(SK_ColorRED);
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paint.setAntiAlias(true);
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bool success = m.invert(&m);
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SkASSERT(success);
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(void) success; // silence compiler :(
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SkPath path;
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SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1};
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SkScalar small = 1 / (500 * SK_Scalar1);
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m.mapPoints(&pt, 1);
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path.addCircle(pt.fX, pt.fY, small);
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canvas->drawPath(path, paint);
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pt.set(30 * SK_Scalar1, 10 * SK_Scalar1);
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m.mapPoints(&pt, 1);
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SkRect rect = {pt.fX - small, pt.fY - small,
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pt.fX + small, pt.fY + small};
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canvas->drawRect(rect, paint);
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SkBitmap bmp;
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bmp.allocN32Pixels(2, 2);
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uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels());
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pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00);
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pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
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pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00);
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pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
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pt.set(30 * SK_Scalar1, 30 * SK_Scalar1);
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m.mapPoints(&pt, 1);
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SkShader* shader = SkShader::CreateBitmapShader(
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bmp,
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SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode);
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SkMatrix s;
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s.reset();
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s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000);
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shader->setLocalMatrix(s);
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paint.setShader(shader)->unref();
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paint.setAntiAlias(false);
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paint.setFilterLevel(SkPaint::kLow_FilterLevel);
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rect.setLTRB(pt.fX - small, pt.fY - small,
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pt.fX + small, pt.fY + small);
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canvas->drawRect(rect, paint);
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new BigMatrixGM; }
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static GMRegistry reg(MyFactory);
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}
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