| /* |
| * Copyright 2021 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/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkFontStyle.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTextBlob.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkTDArray.h" |
| #include "include/private/chromium/Slug.h" |
| #include "tools/ToolUtils.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "include/gpu/GrContextOptions.h" |
| |
| class SlugGM : public skiagm::GM { |
| public: |
| SlugGM(const char* txt) : fText(txt) {} |
| |
| protected: |
| void modifyGrContextOptions(GrContextOptions* ctxOptions) override { |
| ctxOptions->fSupportBilerpFromGlyphAtlas = true; |
| } |
| |
| void onOnceBeforeDraw() override { |
| fTypeface = ToolUtils::create_portable_typeface("serif", SkFontStyle()); |
| SkFont font(fTypeface); |
| size_t txtLen = strlen(fText); |
| int glyphCount = font.countText(fText, txtLen, SkTextEncoding::kUTF8); |
| |
| fGlyphs.append(glyphCount); |
| font.textToGlyphs(fText, txtLen, SkTextEncoding::kUTF8, fGlyphs.begin(), glyphCount); |
| } |
| |
| SkString onShortName() override { |
| return SkString("slug"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(1000, 480); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| sk_sp<SkTextBlob> blob(this->makeBlob()); |
| SkPaint p; |
| p.setAntiAlias(true); |
| canvas->clipIRect(SkIRect::MakeSize(this->getISize()).makeInset(40, 50)); |
| canvas->scale(1.3f, 1.3f); |
| sk_sp<sktext::gpu::Slug> slug = sktext::gpu::Slug::ConvertBlob(canvas, *blob, {10, 10}, p); |
| if (slug == nullptr) { |
| return; |
| } |
| canvas->translate(0.5, 0.5); |
| canvas->translate(30, 30); |
| canvas->drawTextBlob(blob, 10, 10, p); |
| canvas->translate(370, 0); |
| slug->draw(canvas); |
| for (float scale = 1.5; scale < 4; scale += 0.5) { |
| canvas->translate(-370, 20 * scale); |
| canvas->save(); |
| canvas->scale(scale, scale); |
| canvas->rotate(5); |
| canvas->drawTextBlob(blob, 10, 10, p); |
| canvas->restore(); |
| canvas->translate(370, 0); |
| canvas->save(); |
| canvas->scale(scale, scale); |
| canvas->rotate(5); |
| |
| slug->draw(canvas); |
| canvas->restore(); |
| } |
| } |
| |
| private: |
| sk_sp<SkTextBlob> makeBlob() { |
| SkTextBlobBuilder builder; |
| |
| SkFont font; |
| font.setSubpixel(true); |
| font.setEdging(SkFont::Edging::kAntiAlias); |
| font.setTypeface(fTypeface); |
| font.setSize(16); |
| |
| const SkTextBlobBuilder::RunBuffer& buf = builder.allocRun(font, fGlyphs.size(), 0, 0); |
| memcpy(buf.glyphs, fGlyphs.begin(), fGlyphs.size() * sizeof(uint16_t)); |
| return builder.make(); |
| } |
| |
| SkTDArray<uint16_t> fGlyphs; |
| sk_sp<SkTypeface> fTypeface; |
| const char* fText; |
| using INHERITED = skiagm::GM; |
| }; |
| |
| DEF_GM(return new SlugGM("hamburgefons");) |
| #endif |