f3ac2afbb6
Useful in client code to document what we're doing as we switch away from SkFilterQuality. Change-Id: I05737beb99a567a46a3c3ec418b7f7da71b1ff62 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/366723 Reviewed-by: Mike Klein <mtklein@google.com> Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Mike Reed <reed@google.com>
88 lines
2.9 KiB
C++
88 lines
2.9 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/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkFilterQuality.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypes.h"
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#include "tools/Resources.h"
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#include "tools/ToolUtils.h"
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namespace {
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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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const SkSamplingOptions& sampling) {
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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->drawImage(bm.asImage(), 0, 0, sampling);
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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, SkSamplingOptions());
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draw_cell(canvas, bm, mat, 1 * dx, SkSamplingOptions(SkFilterMode::kLinear));
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draw_cell(canvas, bm, mat, 2 * dx, SkSamplingOptions(SkFilterMode::kLinear,
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SkMipmapMode::kLinear));
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draw_cell(canvas, bm, mat, 3 * dx, SkSamplingOptions(SkCubicResampler::Mitchell()));
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}
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class FilterIndiaBoxGM : public skiagm::GM {
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SkBitmap fBM;
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SkMatrix fMatrix[2];
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void onOnceBeforeDraw() override {
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constexpr char kResource[] = "images/box.gif";
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if (!GetResourceAsBitmap(kResource, &fBM)) {
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fBM.allocN32Pixels(1, 1);
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fBM.eraseARGB(255, 255, 0 , 0); // red == bad
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}
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fBM.setImmutable();
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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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SkString onShortName() override { return SkString("filterindiabox"); }
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SkISize onISize() override { return {680, 130}; }
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void onDraw(SkCanvas* canvas) 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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};
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} // namespace
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DEF_GM( return new FilterIndiaBoxGM(); )
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