69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
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/*
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* Copyright 2020 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/SkSurface.h"
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#include "include/core/SkTextBlob.h"
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#include "src/core/SkSurfacePriv.h"
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#include "tests/Test.h"
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#include "tools/ToolUtils.h"
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SkBitmap rasterize_blob(SkTextBlob* blob,
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const SkPaint& paint,
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GrRecordingContext* rContext,
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const SkMatrix& matrix) {
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const SkImageInfo info =
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SkImageInfo::Make(500, 500, kN32_SkColorType, kPremul_SkAlphaType);
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auto surface = SkSurface::MakeRenderTarget(rContext, SkBudgeted::kNo, info);
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auto canvas = surface->getCanvas();
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canvas->drawColor(SK_ColorWHITE);
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canvas->concat(matrix);
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canvas->drawTextBlob(blob, 10, 250, paint);
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SkBitmap bitmap;
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bitmap.allocN32Pixels(500, 500);
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surface->readPixels(bitmap, 0, 0);
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return bitmap;
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}
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bool check_for_black(const SkBitmap& bm) {
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for (int y = 0; y < bm.height(); y++) {
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for (int x = 0; x < bm.width(); x++) {
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if (bm.getColor(x, y) == SK_ColorBLACK) {
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return true;
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}
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}
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}
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return false;
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}
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DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextBlobScaleAnimation, reporter, ctxInfo) {
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auto tf = ToolUtils::create_portable_typeface("Mono", SkFontStyle());
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SkFont font{tf};
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font.setHinting(SkFontHinting::kNormal);
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font.setSize(12);
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font.setEdging(SkFont::Edging::kAntiAlias);
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font.setSubpixel(true);
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SkTextBlobBuilder builder;
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const auto& runBuffer = builder.allocRunPosH(font, 30, 0, nullptr);
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for (int i = 0; i < 30; i++) {
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runBuffer.glyphs[i] = static_cast<SkGlyphID>(i);
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runBuffer.pos[i] = SkIntToScalar(i);
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}
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auto blob = builder.make();
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auto dContext = ctxInfo.directContext();
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bool anyBlack = false;
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for (int n = -13; n < 5; n++) {
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SkMatrix m = SkMatrix::Scale(std::exp2(n), std::exp2(n));
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auto bm = rasterize_blob(blob.get(), SkPaint(), dContext, m);
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anyBlack |= check_for_black(bm);
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}
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REPORTER_ASSERT(reporter, anyBlack);
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}
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