/* * Copyright 2020 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkBitmap.h" #include "include/core/SkCanvas.h" #include "include/core/SkSurface.h" #include "include/core/SkTextBlob.h" #include "src/core/SkSurfacePriv.h" #include "tests/Test.h" #include "tools/ToolUtils.h" SkBitmap rasterize_blob(SkTextBlob* blob, const SkPaint& paint, GrRecordingContext* rContext, const SkMatrix& matrix) { const SkImageInfo info = SkImageInfo::Make(500, 500, kN32_SkColorType, kPremul_SkAlphaType); auto surface = SkSurface::MakeRenderTarget(rContext, SkBudgeted::kNo, info); auto canvas = surface->getCanvas(); canvas->drawColor(SK_ColorWHITE); canvas->concat(matrix); canvas->drawTextBlob(blob, 10, 250, paint); SkBitmap bitmap; bitmap.allocN32Pixels(500, 500); surface->readPixels(bitmap, 0, 0); return bitmap; } bool check_for_black(const SkBitmap& bm) { for (int y = 0; y < bm.height(); y++) { for (int x = 0; x < bm.width(); x++) { if (bm.getColor(x, y) == SK_ColorBLACK) { return true; } } } return false; } DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextBlobScaleAnimation, reporter, ctxInfo) { auto tf = ToolUtils::create_portable_typeface("Mono", SkFontStyle()); SkFont font{tf}; font.setHinting(SkFontHinting::kNormal); font.setSize(12); font.setEdging(SkFont::Edging::kAntiAlias); font.setSubpixel(true); SkTextBlobBuilder builder; const auto& runBuffer = builder.allocRunPosH(font, 30, 0, nullptr); for (int i = 0; i < 30; i++) { runBuffer.glyphs[i] = static_cast(i); runBuffer.pos[i] = SkIntToScalar(i); } auto blob = builder.make(); auto dContext = ctxInfo.directContext(); bool anyBlack = false; for (int n = -13; n < 5; n++) { SkMatrix m = SkMatrix::Scale(std::exp2(n), std::exp2(n)); auto bm = rasterize_blob(blob.get(), SkPaint(), dContext, m); anyBlack |= check_for_black(bm); } REPORTER_ASSERT(reporter, anyBlack); } // Test extreme positions for all combinations of positions, origins, and translation matrices. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextBlobMoveAround, reporter, ctxInfo) { auto tf = ToolUtils::create_portable_typeface("Mono", SkFontStyle()); SkFont font{tf}; font.setHinting(SkFontHinting::kNormal); font.setSize(12); font.setEdging(SkFont::Edging::kAntiAlias); font.setSubpixel(true); auto makeBlob = [&](SkPoint delta) { SkTextBlobBuilder builder; const auto& runBuffer = builder.allocRunPos(font, 30, nullptr); for (int i = 0; i < 30; i++) { runBuffer.glyphs[i] = static_cast(i); runBuffer.points()[i] = SkPoint::Make(SkIntToScalar(i*10) + delta.x(), 50 + delta.y()); } return builder.make(); }; auto dContext = ctxInfo.directContext(); auto rasterizeBlob = [&](SkTextBlob* blob, SkPoint origin, const SkMatrix& matrix) { SkPaint paint; const SkImageInfo info = SkImageInfo::Make(350, 80, kN32_SkColorType, kPremul_SkAlphaType); auto surface = SkSurface::MakeRenderTarget(dContext, SkBudgeted::kNo, info); auto canvas = surface->getCanvas(); canvas->drawColor(SK_ColorWHITE); canvas->concat(matrix); canvas->drawTextBlob(blob, 10 + origin.x(), 40 + origin.y(), paint); SkBitmap bitmap; bitmap.allocN32Pixels(350, 80); surface->readPixels(bitmap, 0, 0); return bitmap; }; SkBitmap benchMark; { auto blob = makeBlob({0, 0}); benchMark = rasterizeBlob(blob.get(), {0,0}, SkMatrix::I()); } auto checkBitmap = [&](const SkBitmap& bitmap) { REPORTER_ASSERT(reporter, benchMark.width() == bitmap.width()); REPORTER_ASSERT(reporter, benchMark.width() == bitmap.width()); for (int y = 0; y < benchMark.height(); y++) { for (int x = 0; x < benchMark.width(); x++) { if (benchMark.getColor(x, y) != bitmap.getColor(x, y)) { return false; } } } return true; }; SkScalar interestingNumbers[] = {-10'000'000, -1'000'000, -1, 0, +1, +1'000'000, +10'000'000}; for (auto originX : interestingNumbers) { for (auto originY : interestingNumbers) { for (auto translateX : interestingNumbers) { for (auto translateY : interestingNumbers) { // Make sure everything adds to zero. SkScalar deltaPosX = -(originX + translateX); SkScalar deltaPosY = -(originY + translateY); auto blob = makeBlob({deltaPosX, deltaPosY}); SkMatrix t = SkMatrix::Translate(translateX, translateY); auto bitmap = rasterizeBlob(blob.get(), {originX, originY}, t); REPORTER_ASSERT(reporter, checkBitmap(bitmap)); } } } } }