a9405c2a29
By using hex color instead of RGB in SkSVGDevice, SVG byte size can be reduced. For example, Quora landing page SVG size: 1588515 bytes (RGB) vs. 1587899 bytes (Hex). Size reduces by 616 bytes. Bug: NONE Test: dm -v --match SVGDevice Change-Id: I1d557c9d8a925c2dde96899e23833dfb89264903 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269260 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Klein <mtklein@google.com>
530 lines
20 KiB
C++
530 lines
20 KiB
C++
/*
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* Copyright 2015 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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#define ABORT_TEST(r, cond, ...) \
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do { \
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if (cond) { \
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REPORT_FAILURE(r, #cond, SkStringPrintf(__VA_ARGS__)); \
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return; \
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} \
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} while (0)
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColorFilter.h"
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#include "include/core/SkData.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkStream.h"
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#include "include/core/SkTextBlob.h"
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#include "include/private/SkTo.h"
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#include "include/svg/SkSVGCanvas.h"
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#include "include/utils/SkParse.h"
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#include "src/shaders/SkImageShader.h"
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#include "tests/Test.h"
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#include "tools/ToolUtils.h"
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#include <string.h>
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#ifdef SK_XML
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#include "src/svg/SkSVGDevice.h"
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#include "src/xml/SkDOM.h"
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#include "src/xml/SkXMLWriter.h"
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static std::unique_ptr<SkCanvas> MakeDOMCanvas(SkDOM* dom, uint32_t flags = 0) {
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auto svgDevice = SkSVGDevice::Make(SkISize::Make(100, 100),
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std::make_unique<SkXMLParserWriter>(dom->beginParsing()),
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flags);
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return svgDevice ? std::make_unique<SkCanvas>(svgDevice)
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: nullptr;
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}
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namespace {
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void check_text_node(skiatest::Reporter* reporter,
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const SkDOM& dom,
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const SkDOM::Node* root,
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const SkPoint& offset,
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unsigned scalarsPerPos,
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const char* txt,
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const char* expected) {
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if (root == nullptr) {
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ERRORF(reporter, "root element not found.");
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return;
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}
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const SkDOM::Node* textElem = dom.getFirstChild(root, "text");
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if (textElem == nullptr) {
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ERRORF(reporter, "<text> element not found.");
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return;
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}
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REPORTER_ASSERT(reporter, dom.getType(textElem) == SkDOM::kElement_Type);
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const SkDOM::Node* textNode= dom.getFirstChild(textElem);
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REPORTER_ASSERT(reporter, textNode != nullptr);
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if (textNode != nullptr) {
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REPORTER_ASSERT(reporter, dom.getType(textNode) == SkDOM::kText_Type);
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REPORTER_ASSERT(reporter, strcmp(expected, dom.getName(textNode)) == 0);
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}
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int textLen = SkToInt(strlen(expected));
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const char* x = dom.findAttr(textElem, "x");
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REPORTER_ASSERT(reporter, x != nullptr);
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if (x != nullptr) {
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int xposCount = textLen;
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REPORTER_ASSERT(reporter, SkParse::Count(x) == xposCount);
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SkAutoTMalloc<SkScalar> xpos(xposCount);
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SkParse::FindScalars(x, xpos.get(), xposCount);
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if (scalarsPerPos < 1) {
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// For default-positioned text, we cannot make any assumptions regarding
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// the first glyph position when the string has leading whitespace (to be stripped).
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if (txt[0] != ' ' && txt[0] != '\t') {
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REPORTER_ASSERT(reporter, xpos[0] == offset.x());
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}
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} else {
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for (int i = 0; i < xposCount; ++i) {
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REPORTER_ASSERT(reporter, xpos[i] == SkIntToScalar(expected[i]));
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}
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}
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}
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const char* y = dom.findAttr(textElem, "y");
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REPORTER_ASSERT(reporter, y != nullptr);
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if (y != nullptr) {
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int yposCount = (scalarsPerPos < 2) ? 1 : textLen;
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REPORTER_ASSERT(reporter, SkParse::Count(y) == yposCount);
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SkAutoTMalloc<SkScalar> ypos(yposCount);
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SkParse::FindScalars(y, ypos.get(), yposCount);
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if (scalarsPerPos < 2) {
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REPORTER_ASSERT(reporter, ypos[0] == offset.y());
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} else {
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for (int i = 0; i < yposCount; ++i) {
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REPORTER_ASSERT(reporter, ypos[i] == 150 - SkIntToScalar(expected[i]));
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}
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}
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}
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}
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void test_whitespace_pos(skiatest::Reporter* reporter,
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const char* txt,
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const char* expected) {
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size_t len = strlen(txt);
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SkDOM dom;
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SkPaint paint;
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SkFont font(ToolUtils::create_portable_typeface());
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SkPoint offset = SkPoint::Make(10, 20);
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{
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MakeDOMCanvas(&dom)->drawSimpleText(txt, len, SkTextEncoding::kUTF8,
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offset.x(), offset.y(), font, paint);
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}
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check_text_node(reporter, dom, dom.finishParsing(), offset, 0, txt, expected);
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{
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SkAutoTMalloc<SkScalar> xpos(len);
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for (int i = 0; i < SkToInt(len); ++i) {
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xpos[i] = SkIntToScalar(txt[i]);
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}
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auto blob = SkTextBlob::MakeFromPosTextH(txt, len, &xpos[0], offset.y(), font);
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MakeDOMCanvas(&dom)->drawTextBlob(blob, 0, 0, paint);
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}
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check_text_node(reporter, dom, dom.finishParsing(), offset, 1, txt, expected);
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{
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SkAutoTMalloc<SkPoint> pos(len);
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for (int i = 0; i < SkToInt(len); ++i) {
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pos[i] = SkPoint::Make(SkIntToScalar(txt[i]), 150 - SkIntToScalar(txt[i]));
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}
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auto blob = SkTextBlob::MakeFromPosText(txt, len, &pos[0], font);
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MakeDOMCanvas(&dom)->drawTextBlob(blob, 0, 0, paint);
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}
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check_text_node(reporter, dom, dom.finishParsing(), offset, 2, txt, expected);
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}
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} // namespace
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DEF_TEST(SVGDevice_whitespace_pos, reporter) {
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static const struct {
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const char* tst_in;
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const char* tst_out;
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} tests[] = {
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{ "abcd" , "abcd" },
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{ "ab cd" , "ab cd" },
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{ "ab \t\t cd", "ab cd" },
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{ " abcd" , "abcd" },
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{ " abcd" , "abcd" },
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{ " \t\t abcd", "abcd" },
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{ "abcd " , "abcd " }, // we allow one trailing whitespace char
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{ "abcd " , "abcd " }, // because it makes no difference and
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{ "abcd\t " , "abcd " }, // simplifies the implementation
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{ "\t\t \t ab \t\t \t cd \t\t \t ", "ab cd " },
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};
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for (unsigned i = 0; i < SK_ARRAY_COUNT(tests); ++i) {
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test_whitespace_pos(reporter, tests[i].tst_in, tests[i].tst_out);
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}
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}
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void SetImageShader(SkPaint* paint, int imageWidth, int imageHeight, SkTileMode xTile,
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SkTileMode yTile) {
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auto surface = SkSurface::MakeRasterN32Premul(imageWidth, imageHeight);
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paint->setShader(surface->makeImageSnapshot()->makeShader(xTile, yTile, nullptr));
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}
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// Attempt to find the three nodes on which we have expectations:
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// the pattern node, the image within that pattern, and the rect which
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// uses the pattern as a fill.
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// returns false if not all nodes are found.
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bool FindImageShaderNodes(skiatest::Reporter* reporter, const SkDOM* dom, const SkDOM::Node* root,
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const SkDOM::Node** patternOut, const SkDOM::Node** imageOut,
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const SkDOM::Node** rectOut) {
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if (root == nullptr || dom == nullptr) {
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ERRORF(reporter, "root element not found");
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return false;
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}
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const SkDOM::Node* rect = dom->getFirstChild(root, "rect");
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if (rect == nullptr) {
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ERRORF(reporter, "rect not found");
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return false;
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}
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*rectOut = rect;
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const SkDOM::Node* defs = dom->getFirstChild(root, "defs");
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if (defs == nullptr) {
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ERRORF(reporter, "defs not found");
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return false;
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}
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const SkDOM::Node* pattern = dom->getFirstChild(defs, "pattern");
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if (pattern == nullptr) {
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ERRORF(reporter, "pattern not found");
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return false;
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}
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*patternOut = pattern;
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const SkDOM::Node* image = dom->getFirstChild(pattern, "image");
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if (image == nullptr) {
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ERRORF(reporter, "image not found");
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return false;
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}
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*imageOut = image;
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return true;
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}
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void ImageShaderTestSetup(SkDOM* dom, SkPaint* paint, int imageWidth, int imageHeight,
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int rectWidth, int rectHeight, SkTileMode xTile, SkTileMode yTile) {
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SetImageShader(paint, imageWidth, imageHeight, xTile, yTile);
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auto svgCanvas = MakeDOMCanvas(dom);
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SkRect bounds{0, 0, SkIntToScalar(rectWidth), SkIntToScalar(rectHeight)};
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svgCanvas->drawRect(bounds, *paint);
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}
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DEF_TEST(SVGDevice_image_shader_norepeat, reporter) {
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SkDOM dom;
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SkPaint paint;
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int imageWidth = 3, imageHeight = 3;
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int rectWidth = 10, rectHeight = 10;
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ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
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SkTileMode::kClamp, SkTileMode::kClamp);
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const SkDOM::Node* root = dom.finishParsing();
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const SkDOM::Node *patternNode, *imageNode, *rectNode;
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bool structureAppropriate =
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FindImageShaderNodes(reporter, &dom, root, &patternNode, &imageNode, &rectNode);
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REPORTER_ASSERT(reporter, structureAppropriate);
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// the image should always maintain its size.
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
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// making the pattern as large as the container prevents
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// it from repeating.
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "width"), "100%") == 0);
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "height"), "100%") == 0);
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}
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DEF_TEST(SVGDevice_image_shader_tilex, reporter) {
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SkDOM dom;
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SkPaint paint;
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int imageWidth = 3, imageHeight = 3;
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int rectWidth = 10, rectHeight = 10;
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ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
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SkTileMode::kRepeat, SkTileMode::kClamp);
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const SkDOM::Node* root = dom.finishParsing();
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const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
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if (innerSvg == nullptr) {
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ERRORF(reporter, "inner svg element not found");
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return;
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}
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const SkDOM::Node *patternNode, *imageNode, *rectNode;
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bool structureAppropriate =
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FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
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REPORTER_ASSERT(reporter, structureAppropriate);
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// the imageNode should always maintain its size.
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
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// if the patternNode width matches the imageNode width,
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// it will repeat in along the x axis.
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "width")) == imageWidth);
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "height"), "100%") == 0);
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}
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DEF_TEST(SVGDevice_image_shader_tiley, reporter) {
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SkDOM dom;
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SkPaint paint;
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int imageNodeWidth = 3, imageNodeHeight = 3;
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int rectNodeWidth = 10, rectNodeHeight = 10;
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ImageShaderTestSetup(&dom, &paint, imageNodeWidth, imageNodeHeight, rectNodeWidth,
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rectNodeHeight, SkTileMode::kClamp, SkTileMode::kRepeat);
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const SkDOM::Node* root = dom.finishParsing();
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const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
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if (innerSvg == nullptr) {
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ERRORF(reporter, "inner svg element not found");
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return;
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}
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const SkDOM::Node *patternNode, *imageNode, *rectNode;
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bool structureAppropriate =
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FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
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REPORTER_ASSERT(reporter, structureAppropriate);
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// the imageNode should always maintain its size.
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageNodeWidth);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageNodeHeight);
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// making the patternNode as large as the container prevents
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// it from repeating.
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "width"), "100%") == 0);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "height")) == imageNodeHeight);
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}
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DEF_TEST(SVGDevice_image_shader_tileboth, reporter) {
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SkDOM dom;
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SkPaint paint;
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int imageWidth = 3, imageHeight = 3;
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int rectWidth = 10, rectHeight = 10;
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ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
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SkTileMode::kRepeat, SkTileMode::kRepeat);
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const SkDOM::Node* root = dom.finishParsing();
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const SkDOM::Node *patternNode, *imageNode, *rectNode;
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const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
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if (innerSvg == nullptr) {
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ERRORF(reporter, "inner svg element not found");
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return;
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}
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bool structureAppropriate =
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FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
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REPORTER_ASSERT(reporter, structureAppropriate);
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// the imageNode should always maintain its size.
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "width")) == imageWidth);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "height")) == imageHeight);
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}
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DEF_TEST(SVGDevice_ColorFilters, reporter) {
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SkDOM dom;
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SkPaint paint;
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paint.setColorFilter(SkColorFilters::Blend(SK_ColorRED, SkBlendMode::kSrcIn));
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{
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auto svgCanvas = MakeDOMCanvas(&dom);
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SkRect bounds{0, 0, SkIntToScalar(100), SkIntToScalar(100)};
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svgCanvas->drawRect(bounds, paint);
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}
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const SkDOM::Node* rootElement = dom.finishParsing();
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ABORT_TEST(reporter, !rootElement, "root element not found");
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const SkDOM::Node* filterElement = dom.getFirstChild(rootElement, "filter");
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ABORT_TEST(reporter, !filterElement, "filter element not found");
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const SkDOM::Node* floodElement = dom.getFirstChild(filterElement, "feFlood");
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ABORT_TEST(reporter, !floodElement, "feFlood element not found");
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const SkDOM::Node* compositeElement = dom.getFirstChild(filterElement, "feComposite");
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ABORT_TEST(reporter, !compositeElement, "feComposite element not found");
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(filterElement, "width"), "100%") == 0);
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(filterElement, "height"), "100%") == 0);
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REPORTER_ASSERT(reporter,
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strcmp(dom.findAttr(floodElement, "flood-color"), "red") == 0);
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REPORTER_ASSERT(reporter, atoi(dom.findAttr(floodElement, "flood-opacity")) == 1);
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(compositeElement, "in"), "flood") == 0);
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REPORTER_ASSERT(reporter, strcmp(dom.findAttr(compositeElement, "operator"), "in") == 0);
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}
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DEF_TEST(SVGDevice_textpath, reporter) {
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SkDOM dom;
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SkFont font(ToolUtils::create_portable_typeface());
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SkPaint paint;
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// By default, we emit <text> nodes.
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{
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auto svgCanvas = MakeDOMCanvas(&dom);
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svgCanvas->drawString("foo", 100, 100, font, paint);
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}
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const auto* rootElement = dom.finishParsing();
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REPORTER_ASSERT(reporter, rootElement, "root element not found");
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const auto* textElement = dom.getFirstChild(rootElement, "text");
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REPORTER_ASSERT(reporter, textElement, "text element not found");
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const auto* pathElement = dom.getFirstChild(rootElement, "path");
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REPORTER_ASSERT(reporter, !pathElement, "path element found");
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// With kConvertTextToPaths_Flag, we emit <path> nodes.
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{
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auto svgCanvas = MakeDOMCanvas(&dom, SkSVGCanvas::kConvertTextToPaths_Flag);
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svgCanvas->drawString("foo", 100, 100, font, paint);
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}
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rootElement = dom.finishParsing();
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REPORTER_ASSERT(reporter, rootElement, "root element not found");
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textElement = dom.getFirstChild(rootElement, "text");
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REPORTER_ASSERT(reporter, !textElement, "text element found");
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pathElement = dom.getFirstChild(rootElement, "path");
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REPORTER_ASSERT(reporter, pathElement, "path element not found");
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}
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DEF_TEST(SVGDevice_fill_stroke, reporter) {
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struct {
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SkColor color;
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SkPaint::Style style;
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const char* expected_fill;
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const char* expected_stroke;
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} gTests[] = {
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{ SK_ColorBLACK, SkPaint::kFill_Style , nullptr, nullptr },
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{ SK_ColorBLACK, SkPaint::kStroke_Style, "none" , "black" },
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{ SK_ColorRED , SkPaint::kFill_Style , "red" , nullptr },
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{ SK_ColorRED , SkPaint::kStroke_Style, "none" , "red" },
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};
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for (const auto& tst : gTests) {
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SkPaint p;
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p.setColor(tst.color);
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p.setStyle(tst.style);
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SkDOM dom;
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{
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MakeDOMCanvas(&dom)->drawRect(SkRect::MakeWH(100, 100), p);
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}
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const auto* root = dom.finishParsing();
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REPORTER_ASSERT(reporter, root, "root element not found");
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const auto* rect = dom.getFirstChild(root, "rect");
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REPORTER_ASSERT(reporter, rect, "rect element not found");
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const auto* fill = dom.findAttr(rect, "fill");
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REPORTER_ASSERT(reporter, !!fill == !!tst.expected_fill);
|
|
if (fill) {
|
|
REPORTER_ASSERT(reporter, strcmp(fill, tst.expected_fill) == 0);
|
|
}
|
|
const auto* stroke = dom.findAttr(rect, "stroke");
|
|
REPORTER_ASSERT(reporter, !!stroke == !!tst.expected_stroke);
|
|
if (stroke) {
|
|
REPORTER_ASSERT(reporter, strcmp(stroke, tst.expected_stroke) == 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
DEF_TEST(SVGDevice_fill_rect_hex, reporter) {
|
|
SkDOM dom;
|
|
SkPaint paint;
|
|
paint.setColor(SK_ColorBLUE);
|
|
{
|
|
auto svgCanvas = MakeDOMCanvas(&dom);
|
|
SkRect bounds{0, 0, SkIntToScalar(100), SkIntToScalar(100)};
|
|
svgCanvas->drawRect(bounds, paint);
|
|
}
|
|
const SkDOM::Node* rootElement = dom.finishParsing();
|
|
ABORT_TEST(reporter, !rootElement, "root element not found");
|
|
|
|
const SkDOM::Node* rectElement = dom.getFirstChild(rootElement, "rect");
|
|
ABORT_TEST(reporter, !rectElement, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectElement, "fill"), "blue") == 0);
|
|
}
|
|
|
|
DEF_TEST(SVGDevice_fill_rect_custom_hex, reporter) {
|
|
SkDOM dom;
|
|
{
|
|
SkPaint paint;
|
|
paint.setColor(0xFFAABCDE);
|
|
auto svgCanvas = MakeDOMCanvas(&dom);
|
|
SkRect bounds{0, 0, SkIntToScalar(100), SkIntToScalar(100)};
|
|
svgCanvas->drawRect(bounds, paint);
|
|
paint.setColor(0xFFAABBCC);
|
|
svgCanvas->drawRect(bounds, paint);
|
|
paint.setColor(0xFFAA1123);
|
|
svgCanvas->drawRect(bounds, paint);
|
|
}
|
|
const SkDOM::Node* rootElement = dom.finishParsing();
|
|
ABORT_TEST(reporter, !rootElement, "root element not found");
|
|
|
|
// Test 0xAABCDE filled rect.
|
|
const SkDOM::Node* rectElement = dom.getFirstChild(rootElement, "rect");
|
|
ABORT_TEST(reporter, !rectElement, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectElement, "fill"), "#AABCDE") == 0);
|
|
|
|
// Test 0xAABBCC filled rect.
|
|
rectElement = dom.getNextSibling(rectElement, "rect");
|
|
ABORT_TEST(reporter, !rectElement, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectElement, "fill"), "#ABC") == 0);
|
|
|
|
// Test 0xFFAA1123 filled rect. Make sure it does not turn into #A123.
|
|
rectElement = dom.getNextSibling(rectElement, "rect");
|
|
ABORT_TEST(reporter, !rectElement, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectElement, "fill"), "#AA1123") == 0);
|
|
}
|
|
|
|
DEF_TEST(SVGDevice_fill_stroke_rect_hex, reporter) {
|
|
SkDOM dom;
|
|
{
|
|
auto svgCanvas = MakeDOMCanvas(&dom);
|
|
SkRect bounds{0, 0, SkIntToScalar(100), SkIntToScalar(100)};
|
|
|
|
SkPaint paint;
|
|
paint.setColor(0xFF00BBAC);
|
|
svgCanvas->drawRect(bounds, paint);
|
|
paint.setStyle(SkPaint::kStroke_Style);
|
|
paint.setColor(0xFF123456);
|
|
paint.setStrokeWidth(1);
|
|
svgCanvas->drawRect(bounds, paint);
|
|
}
|
|
const SkDOM::Node* rootElement = dom.finishParsing();
|
|
ABORT_TEST(reporter, !rootElement, "root element not found");
|
|
|
|
const SkDOM::Node* rectNode = dom.getFirstChild(rootElement, "rect");
|
|
ABORT_TEST(reporter, !rectNode, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectNode, "fill"), "#00BBAC") == 0);
|
|
|
|
rectNode = dom.getNextSibling(rectNode, "rect");
|
|
ABORT_TEST(reporter, !rectNode, "rect element not found");
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectNode, "stroke"), "#123456") == 0);
|
|
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(rectNode, "stroke-width"), "1") == 0);
|
|
}
|
|
#endif
|