/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "SkAutoMalloc.h" #include "SkBlurMask.h" #include "SkFont.h" #include "SkLayerDrawLooper.h" #include "SkMaskFilter.h" #include "SkPaintPriv.h" #include "SkPath.h" #include "SkRandom.h" #include "SkReadBuffer.h" #include "SkTo.h" #include "SkTypeface.h" #include "SkUTF.h" #include "SkWriteBuffer.h" #include "Test.h" #undef ASSERT static size_t uni_to_utf8(const SkUnichar src[], void* dst, int count) { char* u8 = (char*)dst; for (int i = 0; i < count; ++i) { int n = SkToInt(SkUTF::ToUTF8(src[i], u8)); u8 += n; } return u8 - (char*)dst; } static size_t uni_to_utf16(const SkUnichar src[], void* dst, int count) { uint16_t* u16 = (uint16_t*)dst; for (int i = 0; i < count; ++i) { int n = SkToInt(SkUTF::ToUTF16(src[i], u16)); u16 += n; } return (char*)u16 - (char*)dst; } static size_t uni_to_utf32(const SkUnichar src[], void* dst, int count) { SkUnichar* u32 = (SkUnichar*)dst; if (src != u32) { memcpy(u32, src, count * sizeof(SkUnichar)); } return count * sizeof(SkUnichar); } static int find_first_zero(const uint16_t glyphs[], int count) { for (int i = 0; i < count; ++i) { if (0 == glyphs[i]) { return i; } } return count; } DEF_TEST(Paint_cmap, reporter) { // need to implement charsToGlyphs on other backends (e.g. linux, win) // before we can run this tests everywhere return; static const int NGLYPHS = 64; SkUnichar src[NGLYPHS]; SkUnichar dst[NGLYPHS]; // used for utf8, utf16, utf32 storage static const struct { size_t (*fSeedTextProc)(const SkUnichar[], void* dst, int count); SkTextEncoding fEncoding; } gRec[] = { { uni_to_utf8, kUTF8_SkTextEncoding }, { uni_to_utf16, kUTF16_SkTextEncoding }, { uni_to_utf32, kUTF32_SkTextEncoding }, }; SkRandom rand; SkFont font; font.setTypeface(SkTypeface::MakeDefault()); SkTypeface* face = font.getTypeface(); for (int i = 0; i < 1000; ++i) { // generate some random text for (int j = 0; j < NGLYPHS; ++j) { src[j] = ' ' + j; } // inject some random chars, to sometimes abort early src[rand.nextU() & 63] = rand.nextU() & 0xFFF; for (size_t k = 0; k < SK_ARRAY_COUNT(gRec); ++k) { size_t len = gRec[k].fSeedTextProc(src, dst, NGLYPHS); uint16_t glyphs0[NGLYPHS], glyphs1[NGLYPHS]; bool contains = font.containsText(dst, len, gRec[k].fEncoding); int nglyphs = font.textToGlyphs(dst, len, gRec[k].fEncoding, glyphs0, NGLYPHS); int first = face->charsToGlyphs(dst, (SkTypeface::Encoding)gRec[k].fEncoding, glyphs1, NGLYPHS); int index = find_first_zero(glyphs1, NGLYPHS); REPORTER_ASSERT(reporter, NGLYPHS == nglyphs); REPORTER_ASSERT(reporter, index == first); REPORTER_ASSERT(reporter, 0 == memcmp(glyphs0, glyphs1, NGLYPHS * sizeof(uint16_t))); if (contains) { REPORTER_ASSERT(reporter, NGLYPHS == first); } else { REPORTER_ASSERT(reporter, NGLYPHS > first); } } } } // temparary api for bicubic, just be sure we can set/clear it DEF_TEST(Paint_filterQuality, reporter) { SkPaint p0, p1; REPORTER_ASSERT(reporter, kNone_SkFilterQuality == p0.getFilterQuality()); static const SkFilterQuality gQualitys[] = { kNone_SkFilterQuality, kLow_SkFilterQuality, kMedium_SkFilterQuality, kHigh_SkFilterQuality }; for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) { p0.setFilterQuality(gQualitys[i]); REPORTER_ASSERT(reporter, gQualitys[i] == p0.getFilterQuality()); p1 = p0; REPORTER_ASSERT(reporter, gQualitys[i] == p1.getFilterQuality()); p0.reset(); REPORTER_ASSERT(reporter, kNone_SkFilterQuality == p0.getFilterQuality()); } } DEF_TEST(Paint_copy, reporter) { SkPaint paint; // set a few member variables paint.setStyle(SkPaint::kStrokeAndFill_Style); paint.setStrokeWidth(SkIntToScalar(2)); // set a few pointers SkLayerDrawLooper::Builder looperBuilder; paint.setLooper(looperBuilder.detach()); paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, SkBlurMask::ConvertRadiusToSigma(1))); // copy the paint using the copy constructor and check they are the same SkPaint copiedPaint = paint; REPORTER_ASSERT(reporter, paint == copiedPaint); // copy the paint using the equal operator and check they are the same copiedPaint = paint; REPORTER_ASSERT(reporter, paint == copiedPaint); // clean the paint and check they are back to their initial states SkPaint cleanPaint; paint.reset(); copiedPaint.reset(); REPORTER_ASSERT(reporter, cleanPaint == paint); REPORTER_ASSERT(reporter, cleanPaint == copiedPaint); } // found and fixed for webkit: mishandling when we hit recursion limit on // mostly degenerate cubic flatness test DEF_TEST(Paint_regression_cubic, reporter) { SkPath path, stroke; SkPaint paint; path.moveTo(460.2881309415525f, 303.250847066498f); path.cubicTo(463.36378422175284f, 302.1169735073363f, 456.32239330810046f, 304.720354932878f, 453.15255460013304f, 305.788586869862f); SkRect fillR, strokeR; fillR = path.getBounds(); paint.setStyle(SkPaint::kStroke_Style); paint.setStrokeWidth(SkIntToScalar(2)); paint.getFillPath(path, &stroke); strokeR = stroke.getBounds(); SkRect maxR = fillR; SkScalar miter = SkMaxScalar(SK_Scalar1, paint.getStrokeMiter()); SkScalar inset = paint.getStrokeJoin() == SkPaint::kMiter_Join ? paint.getStrokeWidth() * miter : paint.getStrokeWidth(); maxR.inset(-inset, -inset); // test that our stroke didn't explode REPORTER_ASSERT(reporter, maxR.contains(strokeR)); } DEF_TEST(Paint_flattening, reporter) { const SkFilterQuality levels[] = { kNone_SkFilterQuality, kLow_SkFilterQuality, kMedium_SkFilterQuality, kHigh_SkFilterQuality, }; const SkFontHinting hinting[] = { kNo_SkFontHinting, kSlight_SkFontHinting, kNormal_SkFontHinting, kFull_SkFontHinting, }; const SkPaint::Cap caps[] = { SkPaint::kButt_Cap, SkPaint::kRound_Cap, SkPaint::kSquare_Cap, }; const SkPaint::Join joins[] = { SkPaint::kMiter_Join, SkPaint::kRound_Join, SkPaint::kBevel_Join, }; const SkTextEncoding encodings[] = { kUTF8_SkTextEncoding, kUTF16_SkTextEncoding, kUTF32_SkTextEncoding, kGlyphID_SkTextEncoding, }; const SkPaint::Style styles[] = { SkPaint::kFill_Style, SkPaint::kStroke_Style, SkPaint::kStrokeAndFill_Style, }; #define FOR_SETUP(index, array, setter) \ for (size_t index = 0; index < SK_ARRAY_COUNT(array); ++index) { \ paint.setter(array[index]); \ SkPaint paint; paint.setFlags(0x1234); FOR_SETUP(i, levels, setFilterQuality) FOR_SETUP(j, hinting, setHinting) FOR_SETUP(l, caps, setStrokeCap) FOR_SETUP(m, joins, setStrokeJoin) FOR_SETUP(n, encodings, setTextEncoding) FOR_SETUP(p, styles, setStyle) SkBinaryWriteBuffer writer; SkPaintPriv::Flatten(paint, writer); SkAutoMalloc buf(writer.bytesWritten()); writer.writeToMemory(buf.get()); SkReadBuffer reader(buf.get(), writer.bytesWritten()); SkPaint paint2; SkPaintPriv::Unflatten(&paint2, reader); REPORTER_ASSERT(reporter, paint2 == paint); }}}}}} #undef FOR_SETUP } // found and fixed for android: not initializing rect for string's of length 0 DEF_TEST(Paint_regression_measureText, reporter) { SkFont font; font.setSize(12.0f); SkRect r; r.setLTRB(SK_ScalarNaN, SK_ScalarNaN, SK_ScalarNaN, SK_ScalarNaN); // test that the rect was reset font.measureText("", 0, kUTF8_SkTextEncoding, &r); REPORTER_ASSERT(reporter, r.isEmpty()); } #define ASSERT(expr) REPORTER_ASSERT(r, expr) DEF_TEST(Paint_MoreFlattening, r) { SkPaint paint; paint.setColor(0x00AABBCC); paint.setTextScaleX(1.0f); // Default value, ignored. paint.setTextSize(19); paint.setBlendMode(SkBlendMode::kModulate); paint.setLooper(nullptr); // Default value, ignored. SkBinaryWriteBuffer writer; SkPaintPriv::Flatten(paint, writer); SkAutoMalloc buf(writer.bytesWritten()); writer.writeToMemory(buf.get()); SkReadBuffer reader(buf.get(), writer.bytesWritten()); SkPaint other; SkPaintPriv::Unflatten(&other, reader); ASSERT(reader.offset() == writer.bytesWritten()); // No matter the encoding, these must always hold. ASSERT(other.getColor() == paint.getColor()); ASSERT(other.getTextScaleX() == paint.getTextScaleX()); ASSERT(other.getTextSize() == paint.getTextSize()); ASSERT(other.getLooper() == paint.getLooper()); ASSERT(other.getBlendMode() == paint.getBlendMode()); } DEF_TEST(Paint_getHash, r) { // Try not to inspect the actual hash values in here. // We might want to change the hash function. SkPaint paint; const uint32_t defaultHash = paint.getHash(); // Check that some arbitrary field affects the hash. paint.setColor(0xFF00FF00); REPORTER_ASSERT(r, paint.getHash() != defaultHash); paint.setColor(SK_ColorBLACK); // Reset to default value. REPORTER_ASSERT(r, paint.getHash() == defaultHash); // SkTypeface is the first field we hash, so test it specially. paint.setTypeface(SkTypeface::MakeDefault()); REPORTER_ASSERT(r, paint.getHash() != defaultHash); paint.setTypeface(nullptr); REPORTER_ASSERT(r, paint.getHash() == defaultHash); // This is part of fBitfields, the last field we hash. paint.setHinting(kSlight_SkFontHinting); REPORTER_ASSERT(r, paint.getHash() != defaultHash); paint.setHinting(kNormal_SkFontHinting); REPORTER_ASSERT(r, paint.getHash() == defaultHash); } #include "SkColorMatrixFilter.h" DEF_TEST(Paint_nothingToDraw, r) { SkPaint paint; REPORTER_ASSERT(r, !paint.nothingToDraw()); paint.setAlpha(0); REPORTER_ASSERT(r, paint.nothingToDraw()); paint.setAlpha(0xFF); paint.setBlendMode(SkBlendMode::kDst); REPORTER_ASSERT(r, paint.nothingToDraw()); paint.setAlpha(0); paint.setBlendMode(SkBlendMode::kSrcOver); SkColorMatrix cm; cm.setIdentity(); // does not change alpha paint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat)); REPORTER_ASSERT(r, paint.nothingToDraw()); cm.postTranslate(0, 0, 0, 1); // wacks alpha paint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat)); REPORTER_ASSERT(r, !paint.nothingToDraw()); } #ifdef SK_SUPPORT_LEGACY_PAINT_TEXTMEASURE DEF_TEST(Paint_getwidths, r) { SkPaint paint; const char text[] = "Hamburgefons!@#!#23425,./;'[]"; int count = paint.countText(text, strlen(text)); SkAutoTArray glyphStorage(count * 2); uint16_t* glyphs = glyphStorage.get(); (void)paint.textToGlyphs(text, strlen(text), glyphs); paint.setTextEncoding(kGlyphID_SkTextEncoding); SkAutoTArray widthStorage(count * 2); SkScalar* widths = widthStorage.get(); SkAutoTArray rectStorage(count * 2); SkRect* bounds = rectStorage.get(); for (bool subpix : { false, true }) { paint.setSubpixelText(subpix); for (auto hint : { kNo_SkFontHinting, kSlight_SkFontHinting, kNormal_SkFontHinting, kFull_SkFontHinting}) { paint.setHinting(hint); for (auto size : { 1.0f, 12.0f, 100.0f }) { paint.setTextSize(size); paint.getTextWidths(glyphs, count * 2, widths, bounds); SkFont font = SkFont::LEGACY_ExtractFromPaint(paint); font.getWidths(glyphs, count, widths + count, bounds + count); for (int i = 0; i < count; ++i) { REPORTER_ASSERT(r, widths[i] == widths[i + count]); REPORTER_ASSERT(r, bounds[i] == bounds[i + count]); } } } } } #endif DEF_TEST(Font_getpos, r) { SkFont font; const char text[] = "Hamburgefons!@#!#23425,./;'[]"; int count = font.countText(text, strlen(text), kUTF8_SkTextEncoding); SkAutoTArray glyphStorage(count); uint16_t* glyphs = glyphStorage.get(); (void)font.textToGlyphs(text, strlen(text), kUTF8_SkTextEncoding, glyphs, count); SkAutoTArray widthStorage(count); SkAutoTArray xposStorage(count); SkAutoTArray posStorage(count); SkScalar* widths = widthStorage.get(); SkScalar* xpos = xposStorage.get(); SkPoint* pos = posStorage.get(); for (bool subpix : { false, true }) { font.setSubpixel(subpix); for (auto hint : { kNo_SkFontHinting, kSlight_SkFontHinting, kNormal_SkFontHinting, kFull_SkFontHinting}) { font.setHinting(hint); for (auto size : { 1.0f, 12.0f, 100.0f }) { font.setSize(size); font.getWidths(glyphs, count, widths); font.getXPos(glyphs, count, xpos, 10); font.getPos(glyphs, count, pos, {10, 20}); auto nearly_eq = [](SkScalar a, SkScalar b) { return SkScalarAbs(a - b) < 0.000001f; }; SkScalar x = 10; for (int i = 0; i < count; ++i) { REPORTER_ASSERT(r, nearly_eq(x, xpos[i])); REPORTER_ASSERT(r, nearly_eq(x, pos[i].fX)); REPORTER_ASSERT(r, nearly_eq(20, pos[i].fY)); x += widths[i]; } } } } }