| /* |
| * Copyright 2015 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/SkBlurTypes.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMaskFilter.h" |
| #include "include/core/SkPaint.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/SkSurface.h" |
| #include "include/core/SkSurfaceProps.h" |
| #include "include/core/SkTextBlob.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "src/base/SkRandom.h" |
| #include "src/core/SkBlurMask.h" |
| #include "tools/Resources.h" |
| #include "tools/ToolUtils.h" |
| |
| #include <string.h> |
| |
| namespace skiagm { |
| class TextBlobMixedSizes : public GM { |
| public: |
| // This gm tests that textblobs of mixed sizes with a large glyph will render properly |
| TextBlobMixedSizes(bool useDFT) : fUseDFT(useDFT) {} |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| SkTextBlobBuilder builder; |
| |
| // make textblob. To stress distance fields, we choose sizes appropriately |
| SkFont font(MakeResourceAsTypeface("fonts/HangingS.ttf"), 262); |
| font.setSubpixel(true); |
| font.setEdging(SkFont::Edging::kSubpixelAntiAlias); |
| |
| const char* text = "Skia"; |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, 0); |
| |
| // large |
| SkRect bounds; |
| font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); |
| SkScalar yOffset = bounds.height(); |
| font.setSize(162); |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset); |
| |
| // Medium |
| font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); |
| yOffset += bounds.height(); |
| font.setSize(72); |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset); |
| |
| // Small |
| font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); |
| yOffset += bounds.height(); |
| font.setSize(32); |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset); |
| |
| // micro (will fall out of distance field text even if distance field text is enabled) |
| font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); |
| yOffset += bounds.height(); |
| font.setSize(14); |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset); |
| |
| // Zero size. |
| font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); |
| yOffset += bounds.height(); |
| font.setSize(0); |
| |
| ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset); |
| |
| // build |
| fBlob = builder.make(); |
| } |
| |
| SkString onShortName() override { |
| return SkStringPrintf("textblobmixedsizes%s", |
| fUseDFT ? "_df" : ""); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(kWidth, kHeight); |
| } |
| |
| void onDraw(SkCanvas* inputCanvas) override { |
| SkCanvas* canvas = inputCanvas; |
| sk_sp<SkSurface> surface; |
| if (fUseDFT) { |
| // Create a new Canvas to enable DFT |
| auto ctx = inputCanvas->recordingContext(); |
| SkISize size = onISize(); |
| sk_sp<SkColorSpace> colorSpace = inputCanvas->imageInfo().refColorSpace(); |
| SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), |
| kPremul_SkAlphaType, colorSpace); |
| SkSurfaceProps inputProps; |
| inputCanvas->getProps(&inputProps); |
| SkSurfaceProps props( |
| SkSurfaceProps::kUseDeviceIndependentFonts_Flag | inputProps.flags(), |
| inputProps.pixelGeometry()); |
| surface = SkSurface::MakeRenderTarget(ctx, skgpu::Budgeted::kNo, info, 0, &props); |
| canvas = surface ? surface->getCanvas() : inputCanvas; |
| // init our new canvas with the old canvas's matrix |
| canvas->setMatrix(inputCanvas->getTotalMatrix()); |
| } |
| canvas->drawColor(SK_ColorWHITE); |
| |
| SkRect bounds = fBlob->bounds(); |
| |
| const int kPadX = SkScalarFloorToInt(bounds.width() / 3); |
| const int kPadY = SkScalarFloorToInt(bounds.height() / 3); |
| |
| int rowCount = 0; |
| canvas->translate(SkIntToScalar(kPadX), SkIntToScalar(kPadY)); |
| canvas->save(); |
| SkRandom random; |
| |
| SkPaint paint; |
| if (!fUseDFT) { |
| paint.setColor(SK_ColorWHITE); |
| } |
| paint.setAntiAlias(false); |
| |
| const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(8)); |
| |
| // setup blur paint |
| SkPaint blurPaint(paint); |
| blurPaint.setColor(SK_ColorBLACK); |
| blurPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, kSigma)); |
| |
| for (int i = 0; i < 4; i++) { |
| canvas->save(); |
| switch (i % 2) { |
| case 0: |
| canvas->rotate(random.nextF() * 45.f); |
| break; |
| case 1: |
| canvas->rotate(-random.nextF() * 45.f); |
| break; |
| } |
| if (!fUseDFT) { |
| canvas->drawTextBlob(fBlob, 0, 0, blurPaint); |
| } |
| canvas->drawTextBlob(fBlob, 0, 0, paint); |
| canvas->restore(); |
| canvas->translate(bounds.width() + SK_Scalar1 * kPadX, 0); |
| ++rowCount; |
| if ((bounds.width() + 2 * kPadX) * rowCount > kWidth) { |
| canvas->restore(); |
| canvas->translate(0, bounds.height() + SK_Scalar1 * kPadY); |
| canvas->save(); |
| rowCount = 0; |
| } |
| } |
| canvas->restore(); |
| |
| // render offscreen buffer |
| if (surface) { |
| SkAutoCanvasRestore acr(inputCanvas, true); |
| // since we prepended this matrix already, we blit using identity |
| inputCanvas->resetMatrix(); |
| inputCanvas->drawImage(surface->makeImageSnapshot().get(), 0, 0); |
| } |
| } |
| |
| private: |
| sk_sp<SkTextBlob> fBlob; |
| |
| static constexpr int kWidth = 2100; |
| static constexpr int kHeight = 1900; |
| |
| bool fUseDFT; |
| |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new TextBlobMixedSizes(false); ) |
| DEF_GM( return new TextBlobMixedSizes(true); ) |
| } // namespace skiagm |