273a00d14f
BUG=skia: Review URL: https://codereview.chromium.org/240283012 git-svn-id: http://skia.googlecode.com/svn/trunk@14240 2bbb7eff-a529-9590-31e7-b0007b416f81
352 lines
12 KiB
C++
352 lines
12 KiB
C++
/*
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* Copyright 2011 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 "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkLayerDrawLooper.h"
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#include "SkPaint.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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#include "SkReadBuffer.h"
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#include "SkTypeface.h"
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#include "SkUtils.h"
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#include "SkWriteBuffer.h"
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#include "SkXfermode.h"
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#include "Test.h"
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static size_t uni_to_utf8(const SkUnichar src[], void* dst, int count) {
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char* u8 = (char*)dst;
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for (int i = 0; i < count; ++i) {
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int n = SkUTF8_FromUnichar(src[i], u8);
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u8 += n;
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}
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return u8 - (char*)dst;
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}
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static size_t uni_to_utf16(const SkUnichar src[], void* dst, int count) {
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uint16_t* u16 = (uint16_t*)dst;
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for (int i = 0; i < count; ++i) {
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int n = SkUTF16_FromUnichar(src[i], u16);
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u16 += n;
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}
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return (char*)u16 - (char*)dst;
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}
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static size_t uni_to_utf32(const SkUnichar src[], void* dst, int count) {
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SkUnichar* u32 = (SkUnichar*)dst;
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if (src != u32) {
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memcpy(u32, src, count * sizeof(SkUnichar));
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}
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return count * sizeof(SkUnichar);
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}
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static SkTypeface::Encoding paint2encoding(const SkPaint& paint) {
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SkPaint::TextEncoding enc = paint.getTextEncoding();
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SkASSERT(SkPaint::kGlyphID_TextEncoding != enc);
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return (SkTypeface::Encoding)enc;
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}
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static int find_first_zero(const uint16_t glyphs[], int count) {
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for (int i = 0; i < count; ++i) {
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if (0 == glyphs[i]) {
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return i;
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}
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}
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return count;
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}
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DEF_TEST(Paint_cmap, reporter) {
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// need to implement charsToGlyphs on other backends (e.g. linux, win)
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// before we can run this tests everywhere
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return;
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static const int NGLYPHS = 64;
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SkUnichar src[NGLYPHS];
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SkUnichar dst[NGLYPHS]; // used for utf8, utf16, utf32 storage
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static const struct {
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size_t (*fSeedTextProc)(const SkUnichar[], void* dst, int count);
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SkPaint::TextEncoding fEncoding;
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} gRec[] = {
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{ uni_to_utf8, SkPaint::kUTF8_TextEncoding },
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{ uni_to_utf16, SkPaint::kUTF16_TextEncoding },
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{ uni_to_utf32, SkPaint::kUTF32_TextEncoding },
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};
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SkRandom rand;
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SkPaint paint;
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paint.setTypeface(SkTypeface::RefDefault())->unref();
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SkTypeface* face = paint.getTypeface();
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for (int i = 0; i < 1000; ++i) {
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// generate some random text
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for (int j = 0; j < NGLYPHS; ++j) {
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src[j] = ' ' + j;
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}
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// inject some random chars, to sometimes abort early
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src[rand.nextU() & 63] = rand.nextU() & 0xFFF;
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for (size_t k = 0; k < SK_ARRAY_COUNT(gRec); ++k) {
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paint.setTextEncoding(gRec[k].fEncoding);
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size_t len = gRec[k].fSeedTextProc(src, dst, NGLYPHS);
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uint16_t glyphs0[NGLYPHS], glyphs1[NGLYPHS];
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bool contains = paint.containsText(dst, len);
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int nglyphs = paint.textToGlyphs(dst, len, glyphs0);
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int first = face->charsToGlyphs(dst, paint2encoding(paint), glyphs1, NGLYPHS);
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int index = find_first_zero(glyphs1, NGLYPHS);
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REPORTER_ASSERT(reporter, NGLYPHS == nglyphs);
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REPORTER_ASSERT(reporter, index == first);
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REPORTER_ASSERT(reporter, 0 == memcmp(glyphs0, glyphs1, NGLYPHS * sizeof(uint16_t)));
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if (contains) {
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REPORTER_ASSERT(reporter, NGLYPHS == first);
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} else {
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REPORTER_ASSERT(reporter, NGLYPHS > first);
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}
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}
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}
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}
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// temparary api for bicubic, just be sure we can set/clear it
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DEF_TEST(Paint_filterlevel, reporter) {
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SkPaint p0, p1;
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REPORTER_ASSERT(reporter,
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SkPaint::kNone_FilterLevel == p0.getFilterLevel());
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static const SkPaint::FilterLevel gLevels[] = {
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SkPaint::kNone_FilterLevel,
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SkPaint::kLow_FilterLevel,
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SkPaint::kMedium_FilterLevel,
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SkPaint::kHigh_FilterLevel
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};
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for (size_t i = 0; i < SK_ARRAY_COUNT(gLevels); ++i) {
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p0.setFilterLevel(gLevels[i]);
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REPORTER_ASSERT(reporter, gLevels[i] == p0.getFilterLevel());
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p1 = p0;
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REPORTER_ASSERT(reporter, gLevels[i] == p1.getFilterLevel());
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p0.reset();
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REPORTER_ASSERT(reporter,
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SkPaint::kNone_FilterLevel == p0.getFilterLevel());
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}
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}
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DEF_TEST(Paint_copy, reporter) {
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SkPaint paint;
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// set a few member variables
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paint.setStyle(SkPaint::kStrokeAndFill_Style);
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paint.setTextAlign(SkPaint::kLeft_Align);
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paint.setStrokeWidth(SkIntToScalar(2));
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// set a few pointers
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SkLayerDrawLooper::Builder looperBuilder;
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SkLayerDrawLooper* looper = looperBuilder.detachLooper();
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paint.setLooper(looper)->unref();
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SkMaskFilter* mask = SkBlurMaskFilter::Create(SkBlurMaskFilter::kNormal_BlurStyle,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)));
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paint.setMaskFilter(mask)->unref();
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// copy the paint using the copy constructor and check they are the same
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SkPaint copiedPaint = paint;
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REPORTER_ASSERT(reporter, paint == copiedPaint);
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#ifdef SK_BUILD_FOR_ANDROID
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// the copy constructor should preserve the Generation ID
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uint32_t paintGenID = paint.getGenerationID();
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uint32_t copiedPaintGenID = copiedPaint.getGenerationID();
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REPORTER_ASSERT(reporter, paintGenID == copiedPaintGenID);
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REPORTER_ASSERT(reporter, paint == copiedPaint);
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#endif
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// copy the paint using the equal operator and check they are the same
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copiedPaint = paint;
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REPORTER_ASSERT(reporter, paint == copiedPaint);
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#ifdef SK_BUILD_FOR_ANDROID
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// the equals operator should increment the Generation ID
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REPORTER_ASSERT(reporter, paint.getGenerationID() == paintGenID);
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REPORTER_ASSERT(reporter, copiedPaint.getGenerationID() != copiedPaintGenID);
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copiedPaintGenID = copiedPaint.getGenerationID(); // reset to the new value
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REPORTER_ASSERT(reporter, paint == copiedPaint); // operator== ignores fGenerationID
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#endif
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// clean the paint and check they are back to their initial states
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SkPaint cleanPaint;
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paint.reset();
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copiedPaint.reset();
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REPORTER_ASSERT(reporter, cleanPaint == paint);
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REPORTER_ASSERT(reporter, cleanPaint == copiedPaint);
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#ifdef SK_BUILD_FOR_ANDROID
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// the reset function should increment the Generation ID
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REPORTER_ASSERT(reporter, paint.getGenerationID() != paintGenID);
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REPORTER_ASSERT(reporter, copiedPaint.getGenerationID() != copiedPaintGenID);
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// operator== ignores fGenerationID
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REPORTER_ASSERT(reporter, cleanPaint == paint);
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REPORTER_ASSERT(reporter, cleanPaint == copiedPaint);
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#endif
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}
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// found and fixed for webkit: mishandling when we hit recursion limit on
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// mostly degenerate cubic flatness test
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DEF_TEST(Paint_regression_cubic, reporter) {
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SkPath path, stroke;
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SkPaint paint;
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path.moveTo(460.2881309415525f,
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303.250847066498f);
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path.cubicTo(463.36378422175284f,
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302.1169735073363f,
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456.32239330810046f,
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304.720354932878f,
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453.15255460013304f,
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305.788586869862f);
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SkRect fillR, strokeR;
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fillR = path.getBounds();
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(SkIntToScalar(2));
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paint.getFillPath(path, &stroke);
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strokeR = stroke.getBounds();
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SkRect maxR = fillR;
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SkScalar miter = SkMaxScalar(SK_Scalar1, paint.getStrokeMiter());
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SkScalar inset = paint.getStrokeJoin() == SkPaint::kMiter_Join ?
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SkScalarMul(paint.getStrokeWidth(), miter) :
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paint.getStrokeWidth();
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maxR.inset(-inset, -inset);
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// test that our stroke didn't explode
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REPORTER_ASSERT(reporter, maxR.contains(strokeR));
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}
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DEF_TEST(Paint_flattening, reporter) {
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const SkPaint::FilterLevel levels[] = {
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SkPaint::kNone_FilterLevel,
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SkPaint::kLow_FilterLevel,
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SkPaint::kMedium_FilterLevel,
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SkPaint::kHigh_FilterLevel,
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};
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const SkPaint::Hinting hinting[] = {
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SkPaint::kNo_Hinting,
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SkPaint::kSlight_Hinting,
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SkPaint::kNormal_Hinting,
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SkPaint::kFull_Hinting,
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};
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const SkPaint::Align align[] = {
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SkPaint::kLeft_Align,
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SkPaint::kCenter_Align,
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SkPaint::kRight_Align
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};
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const SkPaint::Cap caps[] = {
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SkPaint::kButt_Cap,
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SkPaint::kRound_Cap,
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SkPaint::kSquare_Cap,
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};
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const SkPaint::Join joins[] = {
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SkPaint::kMiter_Join,
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SkPaint::kRound_Join,
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SkPaint::kBevel_Join,
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};
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const SkPaint::TextEncoding encodings[] = {
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SkPaint::kUTF8_TextEncoding,
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SkPaint::kUTF16_TextEncoding,
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SkPaint::kUTF32_TextEncoding,
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SkPaint::kGlyphID_TextEncoding,
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};
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const SkPaint::Style styles[] = {
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SkPaint::kFill_Style,
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SkPaint::kStroke_Style,
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SkPaint::kStrokeAndFill_Style,
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};
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#define FOR_SETUP(index, array, setter) \
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for (size_t index = 0; index < SK_ARRAY_COUNT(array); ++index) { \
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paint.setter(array[index]); \
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SkPaint paint;
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paint.setFlags(0x1234);
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FOR_SETUP(i, levels, setFilterLevel)
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FOR_SETUP(j, hinting, setHinting)
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FOR_SETUP(k, align, setTextAlign)
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FOR_SETUP(l, caps, setStrokeCap)
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FOR_SETUP(m, joins, setStrokeJoin)
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FOR_SETUP(n, encodings, setTextEncoding)
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FOR_SETUP(p, styles, setStyle)
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SkWriteBuffer writer;
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paint.flatten(writer);
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const uint32_t* written = writer.getWriter32()->contiguousArray();
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SkReadBuffer reader(written, writer.bytesWritten());
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SkPaint paint2;
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paint2.unflatten(reader);
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REPORTER_ASSERT(reporter, paint2 == paint);
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}}}}}}}
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#undef FOR_SETUP
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}
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// found and fixed for android: not initializing rect for string's of length 0
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DEF_TEST(Paint_regression_measureText, reporter) {
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SkPaint paint;
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paint.setTextSize(12.0f);
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SkRect r;
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r.setLTRB(SK_ScalarNaN, SK_ScalarNaN, SK_ScalarNaN, SK_ScalarNaN);
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// test that the rect was reset
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paint.measureText("", 0, &r, 1.0f);
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REPORTER_ASSERT(reporter, r.isEmpty());
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}
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#define ASSERT(expr) REPORTER_ASSERT(r, expr)
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DEF_TEST(Paint_FlatteningTraits, r) {
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SkPaint paint;
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paint.setColor(0x00AABBCC);
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paint.setTextScaleX(1.0f); // Encoded despite being the default value.
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paint.setTextSize(19);
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paint.setXfermode(SkXfermode::Create(SkXfermode::kModulate_Mode))->unref();
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paint.setLooper(NULL); // Ignored.
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SkWriteBuffer writer;
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SkPaint::FlatteningTraits::Flatten(writer, paint);
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const size_t expectedBytesWritten = sizeof(void*) == 8 ? 36 : 32;
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ASSERT(expectedBytesWritten == writer.bytesWritten());
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const uint32_t* written = writer.getWriter32()->contiguousArray();
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SkASSERT(written != NULL);
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ASSERT(*written == ((1<<0) | (1<<1) | (1<<2) | (1<<8))); // Dirty bits for our 4.
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SkReadBuffer reader(written, writer.bytesWritten());
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SkPaint other;
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SkPaint::FlatteningTraits::Unflatten(reader, &other);
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ASSERT(reader.offset() == writer.bytesWritten());
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// No matter the encoding, these must always hold.
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ASSERT(other.getColor() == paint.getColor());
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ASSERT(other.getTextScaleX() == paint.getTextScaleX());
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ASSERT(other.getTextSize() == paint.getTextSize());
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ASSERT(other.getLooper() == paint.getLooper());
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// We have to be a little looser and compare just the modes. Pointers might not be the same.
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SkXfermode::Mode otherMode, paintMode;
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ASSERT(other.getXfermode()->asMode(&otherMode));
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ASSERT(paint.getXfermode()->asMode(&paintMode));
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ASSERT(otherMode == paintMode);
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}
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