blob: cd5690ff7ae176bed84d962cd99a6cc8871ebffc [file] [log] [blame]
/*
* 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 "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
namespace {
static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
SkIntToScalar(bm.height()));
mat.mapRect(&bounds);
return SkSize::Make(bounds.width(), bounds.height());
}
static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx,
const SkSamplingOptions& sampling) {
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(dx, 0);
canvas->concat(mat);
canvas->drawImage(bm.asImage(), 0, 0, sampling);
}
static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
draw_cell(canvas, bm, mat, 0 * dx, SkSamplingOptions());
draw_cell(canvas, bm, mat, 1 * dx, SkSamplingOptions(SkFilterMode::kLinear));
draw_cell(canvas, bm, mat, 2 * dx, SkSamplingOptions(SkFilterMode::kLinear,
SkMipmapMode::kLinear));
draw_cell(canvas, bm, mat, 3 * dx, SkSamplingOptions(SkCubicResampler::Mitchell()));
}
class FilterIndiaBoxGM : public skiagm::GM {
SkBitmap fBM;
SkMatrix fMatrix[2];
void onOnceBeforeDraw() override {
constexpr char kResource[] = "images/box.gif";
if (!GetResourceAsBitmap(kResource, &fBM)) {
fBM.allocN32Pixels(1, 1);
fBM.eraseARGB(255, 255, 0 , 0); // red == bad
}
fBM.setImmutable();
SkScalar cx = SkScalarHalf(fBM.width());
SkScalar cy = SkScalarHalf(fBM.height());
float vertScale = 30.0f/55.0f;
float horizScale = 150.0f/200.0f;
fMatrix[0].setScale(horizScale, vertScale);
fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertScale);
}
SkString onShortName() override { return SkString("filterindiabox"); }
SkISize onISize() override { return {680, 130}; }
void onDraw(SkCanvas* canvas) override {
canvas->translate(10, 10);
for (size_t i = 0; i < std::size(fMatrix); ++i) {
SkSize size = computeSize(fBM, fMatrix[i]);
size.fWidth += 20;
size.fHeight += 20;
draw_row(canvas, fBM, fMatrix[i], size.fWidth);
canvas->translate(0, size.fHeight);
}
}
};
} // namespace
DEF_GM( return new FilterIndiaBoxGM(); )