| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkPaint.h" |
| #include "SkPoint.h" |
| #include "SkTextBlobRunIterator.h" |
| #include "SkTypeface.h" |
| |
| #include "Test.h" |
| |
| class TextBlobTester { |
| public: |
| // This unit test feeds an SkTextBlobBuilder various runs then checks to see if |
| // the result contains the provided data and merges runs when appropriate. |
| static void TestBuilder(skiatest::Reporter* reporter) { |
| SkTextBlobBuilder builder; |
| |
| // empty run set |
| RunBuilderTest(reporter, builder, nullptr, 0, nullptr, 0); |
| |
| RunDef set1[] = { |
| { 128, SkTextBlob::kDefault_Positioning, 100, 100 }, |
| }; |
| RunBuilderTest(reporter, builder, set1, SK_ARRAY_COUNT(set1), set1, SK_ARRAY_COUNT(set1)); |
| |
| RunDef set2[] = { |
| { 128, SkTextBlob::kHorizontal_Positioning, 100, 100 }, |
| }; |
| RunBuilderTest(reporter, builder, set2, SK_ARRAY_COUNT(set2), set2, SK_ARRAY_COUNT(set2)); |
| |
| RunDef set3[] = { |
| { 128, SkTextBlob::kFull_Positioning, 100, 100 }, |
| }; |
| RunBuilderTest(reporter, builder, set3, SK_ARRAY_COUNT(set3), set3, SK_ARRAY_COUNT(set3)); |
| |
| RunDef set4[] = { |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| }; |
| RunBuilderTest(reporter, builder, set4, SK_ARRAY_COUNT(set4), set4, SK_ARRAY_COUNT(set4)); |
| |
| RunDef set5[] = { |
| { 128, SkTextBlob::kHorizontal_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 200, 150 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 300, 250 }, |
| }; |
| RunDef mergedSet5[] = { |
| { 256, SkTextBlob::kHorizontal_Positioning, 0, 150 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 0, 250 }, |
| }; |
| RunBuilderTest(reporter, builder, set5, SK_ARRAY_COUNT(set5), mergedSet5, |
| SK_ARRAY_COUNT(mergedSet5)); |
| |
| RunDef set6[] = { |
| { 128, SkTextBlob::kFull_Positioning, 100, 100 }, |
| { 128, SkTextBlob::kFull_Positioning, 200, 200 }, |
| { 128, SkTextBlob::kFull_Positioning, 300, 300 }, |
| }; |
| RunDef mergedSet6[] = { |
| { 384, SkTextBlob::kFull_Positioning, 0, 0 }, |
| }; |
| RunBuilderTest(reporter, builder, set6, SK_ARRAY_COUNT(set6), mergedSet6, |
| SK_ARRAY_COUNT(mergedSet6)); |
| |
| RunDef set7[] = { |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 200, 150 }, |
| { 128, SkTextBlob::kFull_Positioning, 400, 350 }, |
| { 128, SkTextBlob::kFull_Positioning, 400, 350 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 100, 550 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 200, 650 }, |
| { 128, SkTextBlob::kFull_Positioning, 400, 750 }, |
| { 128, SkTextBlob::kFull_Positioning, 400, 850 }, |
| }; |
| RunDef mergedSet7[] = { |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| { 256, SkTextBlob::kHorizontal_Positioning, 0, 150 }, |
| { 256, SkTextBlob::kFull_Positioning, 0, 0 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 0, 550 }, |
| { 128, SkTextBlob::kHorizontal_Positioning, 0, 650 }, |
| { 256, SkTextBlob::kFull_Positioning, 0, 0 }, |
| }; |
| RunBuilderTest(reporter, builder, set7, SK_ARRAY_COUNT(set7), mergedSet7, |
| SK_ARRAY_COUNT(mergedSet7)); |
| } |
| |
| // This unit test verifies blob bounds computation. |
| static void TestBounds(skiatest::Reporter* reporter) { |
| SkTextBlobBuilder builder; |
| SkPaint font; |
| font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| // Explicit bounds. |
| { |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, !blob); |
| } |
| |
| { |
| SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| builder.allocRun(font, 16, 0, 0, &r1); |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| } |
| |
| { |
| SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| builder.allocRunPosH(font, 16, 0, &r1); |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| } |
| |
| { |
| SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| builder.allocRunPos(font, 16, &r1); |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| } |
| |
| { |
| SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50); |
| SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5); |
| |
| builder.allocRun(font, 16, 0, 0, &r1); |
| builder.allocRunPosH(font, 16, 0, &r2); |
| builder.allocRunPos(font, 16, &r3); |
| |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65)); |
| } |
| |
| { |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, !blob); |
| } |
| |
| // Implicit bounds |
| |
| { |
| // Exercise the empty bounds path, and ensure that RunRecord-aligned pos buffers |
| // don't trigger asserts (http://crbug.com/542643). |
| SkPaint p; |
| p.setTextSize(0); |
| p.setTextEncoding(SkPaint::kUTF8_TextEncoding); |
| |
| const char* txt = "BOOO"; |
| const size_t txtLen = strlen(txt); |
| const int glyphCount = p.textToGlyphs(txt, txtLen, nullptr); |
| |
| p.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(p, glyphCount); |
| |
| p.setTextEncoding(SkPaint::kUTF8_TextEncoding); |
| p.textToGlyphs(txt, txtLen, buffer.glyphs); |
| |
| memset(buffer.pos, 0, sizeof(SkScalar) * glyphCount * 2); |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, blob->bounds().isEmpty()); |
| } |
| } |
| |
| // Verify that text-related properties are captured in run paints. |
| static void TestPaintProps(skiatest::Reporter* reporter) { |
| SkPaint font; |
| font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| // Kitchen sink font. |
| font.setTextSize(42); |
| font.setTextScaleX(4.2f); |
| font.setTypeface(SkTypeface::MakeDefault()); |
| font.setTextSkewX(0.42f); |
| font.setTextAlign(SkPaint::kCenter_Align); |
| font.setHinting(SkPaint::kFull_Hinting); |
| font.setAntiAlias(true); |
| font.setFakeBoldText(true); |
| font.setLinearText(true); |
| font.setSubpixelText(true); |
| font.setDevKernText(true); |
| font.setLCDRenderText(true); |
| font.setEmbeddedBitmapText(true); |
| font.setAutohinted(true); |
| font.setVerticalText(true); |
| font.setFlags(font.getFlags() | SkPaint::kGenA8FromLCD_Flag); |
| |
| // Ensure we didn't pick default values by mistake. |
| SkPaint defaultPaint; |
| REPORTER_ASSERT(reporter, defaultPaint.getTextSize() != font.getTextSize()); |
| REPORTER_ASSERT(reporter, defaultPaint.getTextScaleX() != font.getTextScaleX()); |
| REPORTER_ASSERT(reporter, defaultPaint.getTypeface() != font.getTypeface()); |
| REPORTER_ASSERT(reporter, defaultPaint.getTextSkewX() != font.getTextSkewX()); |
| REPORTER_ASSERT(reporter, defaultPaint.getTextAlign() != font.getTextAlign()); |
| REPORTER_ASSERT(reporter, defaultPaint.getHinting() != font.getHinting()); |
| REPORTER_ASSERT(reporter, defaultPaint.isAntiAlias() != font.isAntiAlias()); |
| REPORTER_ASSERT(reporter, defaultPaint.isFakeBoldText() != font.isFakeBoldText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isLinearText() != font.isLinearText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isSubpixelText() != font.isSubpixelText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isDevKernText() != font.isDevKernText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isLCDRenderText() != font.isLCDRenderText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isEmbeddedBitmapText() != font.isEmbeddedBitmapText()); |
| REPORTER_ASSERT(reporter, defaultPaint.isAutohinted() != font.isAutohinted()); |
| REPORTER_ASSERT(reporter, defaultPaint.isVerticalText() != font.isVerticalText()); |
| REPORTER_ASSERT(reporter, (defaultPaint.getFlags() & SkPaint::kGenA8FromLCD_Flag) != |
| (font.getFlags() & SkPaint::kGenA8FromLCD_Flag)); |
| |
| SkTextBlobBuilder builder; |
| AddRun(font, 1, SkTextBlob::kDefault_Positioning, SkPoint::Make(0, 0), builder); |
| AddRun(font, 1, SkTextBlob::kHorizontal_Positioning, SkPoint::Make(0, 0), builder); |
| AddRun(font, 1, SkTextBlob::kFull_Positioning, SkPoint::Make(0, 0), builder); |
| sk_sp<SkTextBlob> blob(builder.make()); |
| |
| SkTextBlobRunIterator it(blob.get()); |
| while (!it.done()) { |
| SkPaint paint; |
| it.applyFontToPaint(&paint); |
| |
| REPORTER_ASSERT(reporter, paint.getTextSize() == font.getTextSize()); |
| REPORTER_ASSERT(reporter, paint.getTextScaleX() == font.getTextScaleX()); |
| REPORTER_ASSERT(reporter, paint.getTypeface() == font.getTypeface()); |
| REPORTER_ASSERT(reporter, paint.getTextSkewX() == font.getTextSkewX()); |
| REPORTER_ASSERT(reporter, paint.getTextAlign() == font.getTextAlign()); |
| REPORTER_ASSERT(reporter, paint.getHinting() == font.getHinting()); |
| REPORTER_ASSERT(reporter, paint.isAntiAlias() == font.isAntiAlias()); |
| REPORTER_ASSERT(reporter, paint.isFakeBoldText() == font.isFakeBoldText()); |
| REPORTER_ASSERT(reporter, paint.isLinearText() == font.isLinearText()); |
| REPORTER_ASSERT(reporter, paint.isSubpixelText() == font.isSubpixelText()); |
| REPORTER_ASSERT(reporter, paint.isDevKernText() == font.isDevKernText()); |
| REPORTER_ASSERT(reporter, paint.isLCDRenderText() == font.isLCDRenderText()); |
| REPORTER_ASSERT(reporter, paint.isEmbeddedBitmapText() == font.isEmbeddedBitmapText()); |
| REPORTER_ASSERT(reporter, paint.isAutohinted() == font.isAutohinted()); |
| REPORTER_ASSERT(reporter, paint.isVerticalText() == font.isVerticalText()); |
| REPORTER_ASSERT(reporter, (paint.getFlags() & SkPaint::kGenA8FromLCD_Flag) == |
| (font.getFlags() & SkPaint::kGenA8FromLCD_Flag)); |
| |
| it.next(); |
| } |
| |
| } |
| |
| private: |
| struct RunDef { |
| unsigned count; |
| SkTextBlob::GlyphPositioning pos; |
| SkScalar x, y; |
| }; |
| |
| static void RunBuilderTest(skiatest::Reporter* reporter, SkTextBlobBuilder& builder, |
| const RunDef in[], unsigned inCount, |
| const RunDef out[], unsigned outCount) { |
| SkPaint font; |
| font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| unsigned glyphCount = 0; |
| unsigned posCount = 0; |
| |
| for (unsigned i = 0; i < inCount; ++i) { |
| AddRun(font, in[i].count, in[i].pos, SkPoint::Make(in[i].x, in[i].y), builder); |
| glyphCount += in[i].count; |
| posCount += in[i].count * in[i].pos; |
| } |
| |
| sk_sp<SkTextBlob> blob(builder.make()); |
| REPORTER_ASSERT(reporter, (inCount > 0) == SkToBool(blob)); |
| if (!blob) { |
| return; |
| } |
| |
| SkTextBlobRunIterator it(blob.get()); |
| for (unsigned i = 0; i < outCount; ++i) { |
| REPORTER_ASSERT(reporter, !it.done()); |
| REPORTER_ASSERT(reporter, out[i].pos == it.positioning()); |
| REPORTER_ASSERT(reporter, out[i].count == it.glyphCount()); |
| if (SkTextBlob::kDefault_Positioning == out[i].pos) { |
| REPORTER_ASSERT(reporter, out[i].x == it.offset().x()); |
| REPORTER_ASSERT(reporter, out[i].y == it.offset().y()); |
| } else if (SkTextBlob::kHorizontal_Positioning == out[i].pos) { |
| REPORTER_ASSERT(reporter, out[i].y == it.offset().y()); |
| } |
| |
| for (unsigned k = 0; k < it.glyphCount(); ++k) { |
| REPORTER_ASSERT(reporter, k % 128 == it.glyphs()[k]); |
| if (SkTextBlob::kHorizontal_Positioning == it.positioning()) { |
| REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k]); |
| } else if (SkTextBlob::kFull_Positioning == it.positioning()) { |
| REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k * 2]); |
| REPORTER_ASSERT(reporter, -SkIntToScalar(k % 128) == it.pos()[k * 2 + 1]); |
| } |
| } |
| |
| it.next(); |
| } |
| |
| REPORTER_ASSERT(reporter, it.done()); |
| } |
| |
| static void AddRun(const SkPaint& font, int count, SkTextBlob::GlyphPositioning pos, |
| const SkPoint& offset, SkTextBlobBuilder& builder, |
| const SkRect* bounds = nullptr) { |
| switch (pos) { |
| case SkTextBlob::kDefault_Positioning: { |
| const SkTextBlobBuilder::RunBuffer& rb = builder.allocRun(font, count, offset.x(), |
| offset.y(), bounds); |
| for (int i = 0; i < count; ++i) { |
| rb.glyphs[i] = i; |
| } |
| } break; |
| case SkTextBlob::kHorizontal_Positioning: { |
| const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPosH(font, count, offset.y(), |
| bounds); |
| for (int i = 0; i < count; ++i) { |
| rb.glyphs[i] = i; |
| rb.pos[i] = SkIntToScalar(i); |
| } |
| } break; |
| case SkTextBlob::kFull_Positioning: { |
| const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPos(font, count, bounds); |
| for (int i = 0; i < count; ++i) { |
| rb.glyphs[i] = i; |
| rb.pos[i * 2] = SkIntToScalar(i); |
| rb.pos[i * 2 + 1] = -SkIntToScalar(i); |
| } |
| } break; |
| default: |
| SkFAIL("unhandled positioning value"); |
| } |
| } |
| }; |
| |
| DEF_TEST(TextBlob_builder, reporter) { |
| TextBlobTester::TestBuilder(reporter); |
| TextBlobTester::TestBounds(reporter); |
| } |
| |
| DEF_TEST(TextBlob_paint, reporter) { |
| TextBlobTester::TestPaintProps(reporter); |
| } |
| |
| DEF_TEST(TextBlob_extended, reporter) { |
| SkTextBlobBuilder textBlobBuilder; |
| SkPaint paint; |
| const char text1[] = "Foo"; |
| const char text2[] = "Bar"; |
| |
| int glyphCount = paint.textToGlyphs(text1, strlen(text1), nullptr); |
| SkAutoTMalloc<uint16_t> glyphs(glyphCount); |
| (void)paint.textToGlyphs(text1, strlen(text1), glyphs.get()); |
| paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| auto run = textBlobBuilder.allocRunText( |
| paint, glyphCount, 0, 0, SkToInt(strlen(text2)), SkString(), nullptr); |
| memcpy(run.glyphs, glyphs.get(), sizeof(uint16_t) * glyphCount); |
| memcpy(run.utf8text, text2, strlen(text2)); |
| for (int i = 0; i < glyphCount; ++i) { |
| run.clusters[i] = SkTMin(SkToU32(i), SkToU32(strlen(text2))); |
| } |
| sk_sp<SkTextBlob> blob(textBlobBuilder.make()); |
| REPORTER_ASSERT(reporter, blob); |
| |
| for (SkTextBlobRunIterator it(blob.get()); !it.done(); it.next()) { |
| REPORTER_ASSERT(reporter, it.glyphCount() == (uint32_t)glyphCount); |
| for (uint32_t i = 0; i < it.glyphCount(); ++i) { |
| REPORTER_ASSERT(reporter, it.glyphs()[i] == glyphs[i]); |
| } |
| REPORTER_ASSERT(reporter, SkTextBlob::kDefault_Positioning == it.positioning()); |
| REPORTER_ASSERT(reporter, (SkPoint{0.0f, 0.0f}) == it.offset()); |
| REPORTER_ASSERT(reporter, it.textSize() > 0); |
| REPORTER_ASSERT(reporter, it.clusters()); |
| for (uint32_t i = 0; i < it.glyphCount(); ++i) { |
| REPORTER_ASSERT(reporter, i == it.clusters()[i]); |
| } |
| REPORTER_ASSERT(reporter, 0 == strncmp(text2, it.text(), it.textSize())); |
| } |
| } |
