93a1215fe0
clone (+rebase) of https://codereview.chromium.org/1009183002/ BUG=skia: TBR=scroggo@google.com Review URL: https://codereview.chromium.org/1014533004
126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
/*
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* Copyright 2011 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 "Resources.h"
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#include "SkBitmapProcState.h"
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#include "SkBitmapScaler.h"
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#include "SkGradientShader.h"
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#include "SkImageDecoder.h"
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#include "SkImageEncoder.h"
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#include "SkStream.h"
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#include "SkTypeface.h"
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static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
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SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
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SkIntToScalar(bm.height()));
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mat.mapRect(&bounds);
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return SkSize::Make(bounds.width(), bounds.height());
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}
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static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx,
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SkFilterQuality lvl) {
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SkPaint paint;
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paint.setFilterQuality(lvl);
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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(dx, 0);
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canvas->concat(mat);
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canvas->drawBitmap(bm, 0, 0, &paint);
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}
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static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
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draw_cell(canvas, bm, mat, 0 * dx, kNone_SkFilterQuality);
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draw_cell(canvas, bm, mat, 1 * dx, kLow_SkFilterQuality);
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draw_cell(canvas, bm, mat, 2 * dx, kMedium_SkFilterQuality);
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draw_cell(canvas, bm, mat, 3 * dx, kHigh_SkFilterQuality);
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}
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class FilterIndiaBoxGM : public skiagm::GM {
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void onOnceBeforeDraw() SK_OVERRIDE {
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this->makeBitmap();
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SkScalar cx = SkScalarHalf(fBM.width());
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SkScalar cy = SkScalarHalf(fBM.height());
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float vertScale = 30.0f/55.0f;
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float horizScale = 150.0f/200.0f;
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fMatrix[0].setScale(horizScale, vertScale);
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fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertScale);
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}
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public:
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SkBitmap fBM;
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SkMatrix fMatrix[2];
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SkString fName;
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FilterIndiaBoxGM() {
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this->setBGColor(0xFFDDDDDD);
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}
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FilterIndiaBoxGM(const char filename[]) : fFilename(filename) {
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fName.printf("filterindiabox");
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}
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protected:
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SkString onShortName() SK_OVERRIDE {
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return fName;
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}
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SkISize onISize() SK_OVERRIDE {
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return SkISize::Make(1024, 768);
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}
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void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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canvas->translate(10, 10);
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for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
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SkSize size = computeSize(fBM, fMatrix[i]);
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size.fWidth += 20;
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size.fHeight += 20;
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draw_row(canvas, fBM, fMatrix[i], size.fWidth);
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canvas->translate(0, size.fHeight);
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}
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}
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protected:
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SkString fFilename;
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int fSize;
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SkScalar getScale() {
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return 192.f/fSize;
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}
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void makeBitmap() {
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SkImageDecoder* codec = NULL;
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SkString resourcePath = GetResourcePath(fFilename.c_str());
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SkFILEStream stream(resourcePath.c_str());
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if (stream.isValid()) {
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codec = SkImageDecoder::Factory(&stream);
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}
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if (codec) {
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stream.rewind();
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codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
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SkDELETE(codec);
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} else {
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fBM.allocN32Pixels(1, 1);
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*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
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}
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fSize = fBM.height();
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new FilterIndiaBoxGM("box.gif"); )
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