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/*
* 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 "SkTextBlob.h"
#include "Test.h"
class TextBlobTester {
public:
static void test_builder(skiatest::Reporter* reporter) {
SkPaint font;
font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkTextBlobBuilder builder;
// empty run set
runBuilderTest(reporter, font, builder, NULL, 0, NULL, 0);
RunDef SET1[] = {
{ 128, SkTextBlob::kDefault_Positioning, 100, 100 },
};
runBuilderTest(reporter, font, builder, SET1, SK_ARRAY_COUNT(SET1), SET1,
SK_ARRAY_COUNT(SET1));
RunDef SET2[] = {
{ 128, SkTextBlob::kHorizontal_Positioning, 100, 100 },
};
runBuilderTest(reporter, font, builder, SET2, SK_ARRAY_COUNT(SET2), SET2,
SK_ARRAY_COUNT(SET2));
RunDef SET3[] = {
{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
};
runBuilderTest(reporter, font, 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, font, 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 SET5_MERGED[] = {
{ 256, SkTextBlob::kHorizontal_Positioning, 0, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 0, 250 },
};
runBuilderTest(reporter, font, builder, SET5, SK_ARRAY_COUNT(SET5), SET5_MERGED,
SK_ARRAY_COUNT(SET5_MERGED));
RunDef SET6[] = {
{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
{ 128, SkTextBlob::kFull_Positioning, 200, 200 },
{ 128, SkTextBlob::kFull_Positioning, 300, 300 },
};
RunDef SET6_MERGED[] = {
{ 384, SkTextBlob::kFull_Positioning, 0, 0 },
};
runBuilderTest(reporter, font, builder, SET6, SK_ARRAY_COUNT(SET6), SET6_MERGED,
SK_ARRAY_COUNT(SET6_MERGED));
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 SET7_MERGED[] = {
{ 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, font, builder, SET7, SK_ARRAY_COUNT(SET7), SET7_MERGED,
SK_ARRAY_COUNT(SET7_MERGED));
}
private:
struct RunDef {
unsigned count;
SkTextBlob::GlyphPositioning pos;
SkScalar x, y;
};
static void runBuilderTest(skiatest::Reporter* reporter, const SkPaint& font,
SkTextBlobBuilder& builder,
const RunDef in[], unsigned inCount,
const RunDef out[], unsigned outCount) {
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;
}
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, (NULL != blob->fGlyphBuffer) == (glyphCount > 0));
REPORTER_ASSERT(reporter, (NULL != blob->fPosBuffer) == (posCount > 0));
REPORTER_ASSERT(reporter, (NULL != blob->fRuns.get()) == (inCount > 0));
SkTextBlob::RunIterator it(blob);
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 = NULL) {
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::test_builder(reporter);
}
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