b021f3e3fb
Change-Id: I8958e026ca9e2c5a6c99a7a1cd1ec97088c25fe9 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225548 Commit-Queue: Hal Canary <halcanary@google.com> Reviewed-by: Ben Wagner <bungeman@google.com>
86 lines
3.1 KiB
C++
86 lines
3.1 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 "include/core/SkCanvas.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkString.h"
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#include "include/utils/SkTextUtils.h"
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#include "samplecode/DecodeFile.h"
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#include "samplecode/Sample.h"
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#include "tools/Resources.h"
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#include <vector>
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static const char* gNames[] = {
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"images/mandrill_512_q075.jpg",
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"images/dog.jpg",
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};
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struct Filter2View : public Sample {
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std::vector<SkBitmap> fBitmaps;
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void onOnceBeforeDraw() override {
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SkASSERT(fBitmaps.empty());
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fBitmaps.reserve(SK_ARRAY_COUNT(gNames) * 2);
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for (const char* name : gNames) {
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SkBitmap bitmap;
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(void)decode_file(GetResourceAsData(name), &bitmap);
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fBitmaps.push_back(std::move(bitmap));
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}
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for (const char* name : gNames) {
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SkBitmap bitmap;
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(void)decode_file(GetResourceAsData(name), &bitmap, kRGB_565_SkColorType);
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fBitmaps.push_back(std::move(bitmap));
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}
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this->setBGColor(SK_ColorGRAY);
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}
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SkString name() override { return SkString("Filter/Dither"); }
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void onDrawContent(SkCanvas* canvas) override {
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canvas->translate(SkIntToScalar(10), SkIntToScalar(50));
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const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1);
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const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1);
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SkPaint paint;
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const SkScalar scale = 0.897917f;
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canvas->scale(SK_Scalar1, scale);
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for (int k = 0; k < 2; k++) {
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paint.setFilterQuality(k == 1 ? kLow_SkFilterQuality : kNone_SkFilterQuality);
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for (int j = 0; j < 2; j++) {
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paint.setDither(j == 1);
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for (int i = 0; i < (int)fBitmaps.size(); i++) {
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SkScalar x = (k * (int)fBitmaps.size() + j) * W;
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SkScalar y = i * H;
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x = SkScalarRoundToScalar(x);
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y = SkScalarRoundToScalar(y);
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canvas->drawBitmap(fBitmaps[i], x, y, &paint);
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SkFont font;
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font.setSize(SkIntToScalar(18));
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if (i == 0) {
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SkString s("dither=");
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s.appendS32(paint.isDither());
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s.append(" filter=");
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s.appendS32(paint.getFilterQuality() != kNone_SkFilterQuality);
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SkTextUtils::DrawString(canvas, s.c_str(), x + W/2, y - font.getSize(), font, SkPaint(),
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SkTextUtils::kCenter_Align);
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}
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if (k+j == 2) {
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SkString s;
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s.append(" depth=");
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s.appendS32(fBitmaps[i].colorType() == kRGB_565_SkColorType ? 16 : 32);
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SkTextUtils::DrawString(canvas, s.c_str(), x + W + SkIntToScalar(4), y + H/2, font, SkPaint());
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}
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}
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}
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}
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}
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};
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DEF_SAMPLE( return new Filter2View(); )
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