13b9c95295
Committed: https://skia.googlesource.com/skia/+/6296da736fbf40aae881650c239420f64e576c3f GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1933393002 Review-Url: https://codereview.chromium.org/1933393002
352 lines
15 KiB
C++
352 lines
15 KiB
C++
/*
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* Copyright 2014 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 "SkPaint.h"
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#include "SkPoint.h"
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#include "SkTextBlobRunIterator.h"
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#include "SkTypeface.h"
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#include "Test.h"
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class TextBlobTester {
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public:
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// This unit test feeds an SkTextBlobBuilder various runs then checks to see if
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// the result contains the provided data and merges runs when appropriate.
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static void TestBuilder(skiatest::Reporter* reporter) {
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SkTextBlobBuilder builder;
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// empty run set
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RunBuilderTest(reporter, builder, nullptr, 0, nullptr, 0);
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RunDef set1[] = {
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{ 128, SkTextBlob::kDefault_Positioning, 100, 100 },
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};
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RunBuilderTest(reporter, builder, set1, SK_ARRAY_COUNT(set1), set1, SK_ARRAY_COUNT(set1));
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RunDef set2[] = {
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{ 128, SkTextBlob::kHorizontal_Positioning, 100, 100 },
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};
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RunBuilderTest(reporter, builder, set2, SK_ARRAY_COUNT(set2), set2, SK_ARRAY_COUNT(set2));
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RunDef set3[] = {
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{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
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};
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RunBuilderTest(reporter, builder, set3, SK_ARRAY_COUNT(set3), set3, SK_ARRAY_COUNT(set3));
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RunDef set4[] = {
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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};
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RunBuilderTest(reporter, builder, set4, SK_ARRAY_COUNT(set4), set4, SK_ARRAY_COUNT(set4));
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RunDef set5[] = {
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{ 128, SkTextBlob::kHorizontal_Positioning, 100, 150 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 200, 150 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 300, 250 },
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};
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RunDef mergedSet5[] = {
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{ 256, SkTextBlob::kHorizontal_Positioning, 0, 150 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 0, 250 },
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};
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RunBuilderTest(reporter, builder, set5, SK_ARRAY_COUNT(set5), mergedSet5,
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SK_ARRAY_COUNT(mergedSet5));
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RunDef set6[] = {
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{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
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{ 128, SkTextBlob::kFull_Positioning, 200, 200 },
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{ 128, SkTextBlob::kFull_Positioning, 300, 300 },
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};
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RunDef mergedSet6[] = {
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{ 384, SkTextBlob::kFull_Positioning, 0, 0 },
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};
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RunBuilderTest(reporter, builder, set6, SK_ARRAY_COUNT(set6), mergedSet6,
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SK_ARRAY_COUNT(mergedSet6));
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RunDef set7[] = {
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 100, 150 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 200, 150 },
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{ 128, SkTextBlob::kFull_Positioning, 400, 350 },
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{ 128, SkTextBlob::kFull_Positioning, 400, 350 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 100, 550 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 200, 650 },
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{ 128, SkTextBlob::kFull_Positioning, 400, 750 },
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{ 128, SkTextBlob::kFull_Positioning, 400, 850 },
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};
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RunDef mergedSet7[] = {
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
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{ 256, SkTextBlob::kHorizontal_Positioning, 0, 150 },
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{ 256, SkTextBlob::kFull_Positioning, 0, 0 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
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{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 0, 550 },
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{ 128, SkTextBlob::kHorizontal_Positioning, 0, 650 },
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{ 256, SkTextBlob::kFull_Positioning, 0, 0 },
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};
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RunBuilderTest(reporter, builder, set7, SK_ARRAY_COUNT(set7), mergedSet7,
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SK_ARRAY_COUNT(mergedSet7));
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}
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// This unit test verifies blob bounds computation.
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static void TestBounds(skiatest::Reporter* reporter) {
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SkTextBlobBuilder builder;
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SkPaint font;
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font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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// Explicit bounds.
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{
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
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}
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{
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SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
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builder.allocRun(font, 16, 0, 0, &r1);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds() == r1);
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}
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{
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SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
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builder.allocRunPosH(font, 16, 0, &r1);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds() == r1);
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}
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{
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SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
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builder.allocRunPos(font, 16, &r1);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds() == r1);
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}
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{
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SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
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SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50);
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SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5);
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builder.allocRun(font, 16, 0, 0, &r1);
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builder.allocRunPosH(font, 16, 0, &r2);
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builder.allocRunPos(font, 16, &r3);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65));
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}
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{
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// Verify empty blob bounds after building some non-empty blobs.
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
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}
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// Implicit bounds
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{
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// Exercise the empty bounds path, and ensure that RunRecord-aligned pos buffers
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// don't trigger asserts (http://crbug.com/542643).
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SkPaint p;
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p.setTextSize(0);
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p.setTextEncoding(SkPaint::kUTF8_TextEncoding);
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const char* txt = "BOOO";
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const size_t txtLen = strlen(txt);
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const int glyphCount = p.textToGlyphs(txt, txtLen, nullptr);
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p.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(p, glyphCount);
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p.setTextEncoding(SkPaint::kUTF8_TextEncoding);
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p.textToGlyphs(txt, txtLen, buffer.glyphs);
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memset(buffer.pos, 0, sizeof(SkScalar) * glyphCount * 2);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
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}
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}
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// Verify that text-related properties are captured in run paints.
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static void TestPaintProps(skiatest::Reporter* reporter) {
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SkPaint font;
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font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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// Kitchen sink font.
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font.setTextSize(42);
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font.setTextScaleX(4.2f);
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font.setTypeface(SkTypeface::MakeDefault());
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font.setTextSkewX(0.42f);
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font.setTextAlign(SkPaint::kCenter_Align);
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font.setHinting(SkPaint::kFull_Hinting);
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font.setAntiAlias(true);
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font.setUnderlineText(true);
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font.setStrikeThruText(true);
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font.setFakeBoldText(true);
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font.setLinearText(true);
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font.setSubpixelText(true);
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font.setDevKernText(true);
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font.setLCDRenderText(true);
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font.setEmbeddedBitmapText(true);
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font.setAutohinted(true);
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font.setVerticalText(true);
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font.setFlags(font.getFlags() | SkPaint::kGenA8FromLCD_Flag);
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// Ensure we didn't pick default values by mistake.
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SkPaint defaultPaint;
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REPORTER_ASSERT(reporter, defaultPaint.getTextSize() != font.getTextSize());
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REPORTER_ASSERT(reporter, defaultPaint.getTextScaleX() != font.getTextScaleX());
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REPORTER_ASSERT(reporter, defaultPaint.getTypeface() != font.getTypeface());
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REPORTER_ASSERT(reporter, defaultPaint.getTextSkewX() != font.getTextSkewX());
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REPORTER_ASSERT(reporter, defaultPaint.getTextAlign() != font.getTextAlign());
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REPORTER_ASSERT(reporter, defaultPaint.getHinting() != font.getHinting());
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REPORTER_ASSERT(reporter, defaultPaint.isAntiAlias() != font.isAntiAlias());
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REPORTER_ASSERT(reporter, defaultPaint.isUnderlineText() != font.isUnderlineText());
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REPORTER_ASSERT(reporter, defaultPaint.isStrikeThruText() != font.isStrikeThruText());
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REPORTER_ASSERT(reporter, defaultPaint.isFakeBoldText() != font.isFakeBoldText());
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REPORTER_ASSERT(reporter, defaultPaint.isLinearText() != font.isLinearText());
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REPORTER_ASSERT(reporter, defaultPaint.isSubpixelText() != font.isSubpixelText());
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REPORTER_ASSERT(reporter, defaultPaint.isDevKernText() != font.isDevKernText());
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REPORTER_ASSERT(reporter, defaultPaint.isLCDRenderText() != font.isLCDRenderText());
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REPORTER_ASSERT(reporter, defaultPaint.isEmbeddedBitmapText() != font.isEmbeddedBitmapText());
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REPORTER_ASSERT(reporter, defaultPaint.isAutohinted() != font.isAutohinted());
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REPORTER_ASSERT(reporter, defaultPaint.isVerticalText() != font.isVerticalText());
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REPORTER_ASSERT(reporter, (defaultPaint.getFlags() & SkPaint::kGenA8FromLCD_Flag) !=
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(font.getFlags() & SkPaint::kGenA8FromLCD_Flag));
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SkTextBlobBuilder builder;
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AddRun(font, 1, SkTextBlob::kDefault_Positioning, SkPoint::Make(0, 0), builder);
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AddRun(font, 1, SkTextBlob::kHorizontal_Positioning, SkPoint::Make(0, 0), builder);
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AddRun(font, 1, SkTextBlob::kFull_Positioning, SkPoint::Make(0, 0), builder);
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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SkTextBlobRunIterator it(blob);
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while (!it.done()) {
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SkPaint paint;
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it.applyFontToPaint(&paint);
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REPORTER_ASSERT(reporter, paint.getTextSize() == font.getTextSize());
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REPORTER_ASSERT(reporter, paint.getTextScaleX() == font.getTextScaleX());
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REPORTER_ASSERT(reporter, paint.getTypeface() == font.getTypeface());
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REPORTER_ASSERT(reporter, paint.getTextSkewX() == font.getTextSkewX());
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REPORTER_ASSERT(reporter, paint.getTextAlign() == font.getTextAlign());
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REPORTER_ASSERT(reporter, paint.getHinting() == font.getHinting());
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REPORTER_ASSERT(reporter, paint.isAntiAlias() == font.isAntiAlias());
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REPORTER_ASSERT(reporter, paint.isUnderlineText() == font.isUnderlineText());
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REPORTER_ASSERT(reporter, paint.isStrikeThruText() == font.isStrikeThruText());
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REPORTER_ASSERT(reporter, paint.isFakeBoldText() == font.isFakeBoldText());
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REPORTER_ASSERT(reporter, paint.isLinearText() == font.isLinearText());
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REPORTER_ASSERT(reporter, paint.isSubpixelText() == font.isSubpixelText());
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REPORTER_ASSERT(reporter, paint.isDevKernText() == font.isDevKernText());
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REPORTER_ASSERT(reporter, paint.isLCDRenderText() == font.isLCDRenderText());
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REPORTER_ASSERT(reporter, paint.isEmbeddedBitmapText() == font.isEmbeddedBitmapText());
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REPORTER_ASSERT(reporter, paint.isAutohinted() == font.isAutohinted());
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REPORTER_ASSERT(reporter, paint.isVerticalText() == font.isVerticalText());
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REPORTER_ASSERT(reporter, (paint.getFlags() & SkPaint::kGenA8FromLCD_Flag) ==
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(font.getFlags() & SkPaint::kGenA8FromLCD_Flag));
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it.next();
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}
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}
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private:
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struct RunDef {
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unsigned count;
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SkTextBlob::GlyphPositioning pos;
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SkScalar x, y;
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};
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static void RunBuilderTest(skiatest::Reporter* reporter, SkTextBlobBuilder& builder,
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const RunDef in[], unsigned inCount,
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const RunDef out[], unsigned outCount) {
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SkPaint font;
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font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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unsigned glyphCount = 0;
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unsigned posCount = 0;
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for (unsigned i = 0; i < inCount; ++i) {
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AddRun(font, in[i].count, in[i].pos, SkPoint::Make(in[i].x, in[i].y), builder);
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glyphCount += in[i].count;
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posCount += in[i].count * in[i].pos;
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}
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SkAutoTUnref<const SkTextBlob> blob(builder.build());
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SkTextBlobRunIterator it(blob);
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for (unsigned i = 0; i < outCount; ++i) {
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REPORTER_ASSERT(reporter, !it.done());
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REPORTER_ASSERT(reporter, out[i].pos == it.positioning());
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REPORTER_ASSERT(reporter, out[i].count == it.glyphCount());
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if (SkTextBlob::kDefault_Positioning == out[i].pos) {
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REPORTER_ASSERT(reporter, out[i].x == it.offset().x());
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REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
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} else if (SkTextBlob::kHorizontal_Positioning == out[i].pos) {
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REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
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}
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for (unsigned k = 0; k < it.glyphCount(); ++k) {
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REPORTER_ASSERT(reporter, k % 128 == it.glyphs()[k]);
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if (SkTextBlob::kHorizontal_Positioning == it.positioning()) {
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REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k]);
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} else if (SkTextBlob::kFull_Positioning == it.positioning()) {
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REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k * 2]);
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REPORTER_ASSERT(reporter, -SkIntToScalar(k % 128) == it.pos()[k * 2 + 1]);
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}
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}
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it.next();
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}
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REPORTER_ASSERT(reporter, it.done());
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}
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static void AddRun(const SkPaint& font, int count, SkTextBlob::GlyphPositioning pos,
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const SkPoint& offset, SkTextBlobBuilder& builder,
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const SkRect* bounds = nullptr) {
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switch (pos) {
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case SkTextBlob::kDefault_Positioning: {
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const SkTextBlobBuilder::RunBuffer& rb = builder.allocRun(font, count, offset.x(),
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offset.y(), bounds);
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for (int i = 0; i < count; ++i) {
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rb.glyphs[i] = i;
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}
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} break;
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case SkTextBlob::kHorizontal_Positioning: {
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const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPosH(font, count, offset.y(),
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bounds);
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for (int i = 0; i < count; ++i) {
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rb.glyphs[i] = i;
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rb.pos[i] = SkIntToScalar(i);
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}
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} break;
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case SkTextBlob::kFull_Positioning: {
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const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPos(font, count, bounds);
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for (int i = 0; i < count; ++i) {
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rb.glyphs[i] = i;
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rb.pos[i * 2] = SkIntToScalar(i);
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rb.pos[i * 2 + 1] = -SkIntToScalar(i);
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}
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} break;
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default:
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SkFAIL("unhandled positioning value");
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}
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}
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};
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DEF_TEST(TextBlob_builder, reporter) {
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TextBlobTester::TestBuilder(reporter);
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TextBlobTester::TestBounds(reporter);
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}
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DEF_TEST(TextBlob_paint, reporter) {
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TextBlobTester::TestPaintProps(reporter);
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}
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