blob: 4b6fc5e9730207c24668a6e31d7baa0f8c857f55 [file] [log] [blame]
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#define ABORT_TEST(r, cond, ...) \
do { \
if (cond) { \
REPORT_FAILURE(r, #cond, SkStringPrintf(__VA_ARGS__)); \
return; \
} \
} while (0)
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkData.h"
#include "include/core/SkImage.h"
#include "include/core/SkShader.h"
#include "include/core/SkStream.h"
#include "include/core/SkTextBlob.h"
#include "include/effects/SkDashPathEffect.h"
#include "include/private/SkTo.h"
#include "include/svg/SkSVGCanvas.h"
#include "include/utils/SkParse.h"
#include "src/shaders/SkImageShader.h"
#include "tests/Test.h"
#include "tools/ToolUtils.h"
#include <string.h>
#ifdef SK_XML
#include "src/svg/SkSVGDevice.h"
#include "src/xml/SkDOM.h"
#include "src/xml/SkXMLWriter.h"
static std::unique_ptr<SkCanvas> MakeDOMCanvas(SkDOM* dom, uint32_t flags = 0) {
auto svgDevice = SkSVGDevice::Make(SkISize::Make(100, 100),
std::make_unique<SkXMLParserWriter>(dom->beginParsing()),
flags);
return svgDevice ? std::make_unique<SkCanvas>(svgDevice)
: nullptr;
}
namespace {
void check_text_node(skiatest::Reporter* reporter,
const SkDOM& dom,
const SkDOM::Node* root,
const SkPoint& offset,
unsigned scalarsPerPos,
const char* txt,
const char* expected) {
if (root == nullptr) {
ERRORF(reporter, "root element not found.");
return;
}
const SkDOM::Node* textElem = dom.getFirstChild(root, "text");
if (textElem == nullptr) {
ERRORF(reporter, "<text> element not found.");
return;
}
REPORTER_ASSERT(reporter, dom.getType(textElem) == SkDOM::kElement_Type);
const SkDOM::Node* textNode= dom.getFirstChild(textElem);
REPORTER_ASSERT(reporter, textNode != nullptr);
if (textNode != nullptr) {
REPORTER_ASSERT(reporter, dom.getType(textNode) == SkDOM::kText_Type);
REPORTER_ASSERT(reporter, strcmp(expected, dom.getName(textNode)) == 0);
}
int textLen = SkToInt(strlen(expected));
const char* x = dom.findAttr(textElem, "x");
REPORTER_ASSERT(reporter, x != nullptr);
if (x != nullptr) {
int xposCount = textLen;
REPORTER_ASSERT(reporter, SkParse::Count(x) == xposCount);
SkAutoTMalloc<SkScalar> xpos(xposCount);
SkParse::FindScalars(x, xpos.get(), xposCount);
if (scalarsPerPos < 1) {
// For default-positioned text, we cannot make any assumptions regarding
// the first glyph position when the string has leading whitespace (to be stripped).
if (txt[0] != ' ' && txt[0] != '\t') {
REPORTER_ASSERT(reporter, xpos[0] == offset.x());
}
} else {
for (int i = 0; i < xposCount; ++i) {
REPORTER_ASSERT(reporter, xpos[i] == SkIntToScalar(expected[i]));
}
}
}
const char* y = dom.findAttr(textElem, "y");
REPORTER_ASSERT(reporter, y != nullptr);
if (y != nullptr) {
int yposCount = (scalarsPerPos < 2) ? 1 : textLen;
REPORTER_ASSERT(reporter, SkParse::Count(y) == yposCount);
SkAutoTMalloc<SkScalar> ypos(yposCount);
SkParse::FindScalars(y, ypos.get(), yposCount);
if (scalarsPerPos < 2) {
REPORTER_ASSERT(reporter, ypos[0] == offset.y());
} else {
for (int i = 0; i < yposCount; ++i) {
REPORTER_ASSERT(reporter, ypos[i] == 150 - SkIntToScalar(expected[i]));
}
}
}
}
void test_whitespace_pos(skiatest::Reporter* reporter,
const char* txt,
const char* expected) {
size_t len = strlen(txt);
SkDOM dom;
SkPaint paint;
SkFont font(ToolUtils::create_portable_typeface());
SkPoint offset = SkPoint::Make(10, 20);
{
MakeDOMCanvas(&dom)->drawSimpleText(txt, len, SkTextEncoding::kUTF8,
offset.x(), offset.y(), font, paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 0, txt, expected);
{
SkAutoTMalloc<SkScalar> xpos(len);
for (int i = 0; i < SkToInt(len); ++i) {
xpos[i] = SkIntToScalar(txt[i]);
}
auto blob = SkTextBlob::MakeFromPosTextH(txt, len, &xpos[0], offset.y(), font);
MakeDOMCanvas(&dom)->drawTextBlob(blob, 0, 0, paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 1, txt, expected);
{
SkAutoTMalloc<SkPoint> pos(len);
for (int i = 0; i < SkToInt(len); ++i) {
pos[i] = SkPoint::Make(SkIntToScalar(txt[i]), 150 - SkIntToScalar(txt[i]));
}
auto blob = SkTextBlob::MakeFromPosText(txt, len, &pos[0], font);
MakeDOMCanvas(&dom)->drawTextBlob(blob, 0, 0, paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 2, txt, expected);
}
} // namespace
DEF_TEST(SVGDevice_whitespace_pos, reporter) {
static const struct {
const char* tst_in;
const char* tst_out;
} tests[] = {
{ "abcd" , "abcd" },
{ "ab cd" , "ab cd" },
{ "ab \t\t cd", "ab cd" },
{ " abcd" , "abcd" },
{ " abcd" , "abcd" },
{ " \t\t abcd", "abcd" },
{ "abcd " , "abcd " }, // we allow one trailing whitespace char
{ "abcd " , "abcd " }, // because it makes no difference and
{ "abcd\t " , "abcd " }, // simplifies the implementation
{ "\t\t \t ab \t\t \t cd \t\t \t ", "ab cd " },
};
for (unsigned i = 0; i < SK_ARRAY_COUNT(tests); ++i) {
test_whitespace_pos(reporter, tests[i].tst_in, tests[i].tst_out);
}
}
void SetImageShader(SkPaint* paint, int imageWidth, int imageHeight, SkTileMode xTile,
SkTileMode yTile) {
auto surface = SkSurface::MakeRasterN32Premul(imageWidth, imageHeight);
paint->setShader(surface->makeImageSnapshot()->makeShader(xTile, yTile, nullptr));
}
// Attempt to find the three nodes on which we have expectations:
// the pattern node, the image within that pattern, and the rect which
// uses the pattern as a fill.
// returns false if not all nodes are found.
bool FindImageShaderNodes(skiatest::Reporter* reporter, const SkDOM* dom, const SkDOM::Node* root,
const SkDOM::Node** patternOut, const SkDOM::Node** imageOut,
const SkDOM::Node** rectOut) {
if (root == nullptr || dom == nullptr) {
ERRORF(reporter, "root element not found");
return false;
}
const SkDOM::Node* rect = dom->getFirstChild(root, "rect");
if (rect == nullptr) {
ERRORF(reporter, "rect not found");
return false;
}
*rectOut = rect;
const SkDOM::Node* defs = dom->getFirstChild(root, "defs");
if (defs == nullptr) {
ERRORF(reporter, "defs not found");
return false;
}
const SkDOM::Node* pattern = dom->getFirstChild(defs, "pattern");
if (pattern == nullptr) {
ERRORF(reporter, "pattern not found");
return false;
}
*patternOut = pattern;
const SkDOM::Node* image = dom->getFirstChild(pattern, "image");
if (image == nullptr) {
ERRORF(reporter, "image not found");
return false;
}
*imageOut = image;
return true;
}
void ImageShaderTestSetup(SkDOM* dom, SkPaint* paint, int imageWidth, int imageHeight,
int rectWidth, int rectHeight, SkTileMode xTile, SkTileMode yTile) {
SetImageShader(paint, imageWidth, imageHeight, xTile, yTile);
auto svgCanvas = MakeDOMCanvas(dom);
SkRect bounds{0, 0, SkIntToScalar(rectWidth), SkIntToScalar(rectHeight)};
svgCanvas->drawRect(bounds, *paint);
}
DEF_TEST(SVGDevice_image_shader_norepeat, reporter) {
SkDOM dom;
SkPaint paint;
int imageWidth = 3, imageHeight = 3;
int rectWidth = 10, rectHeight = 10;
ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
SkTileMode::kClamp, SkTileMode::kClamp);
const SkDOM::Node* root = dom.finishParsing();
const SkDOM::Node *patternNode, *imageNode, *rectNode;
bool structureAppropriate =
FindImageShaderNodes(reporter, &dom, root, &patternNode, &imageNode, &rectNode);
REPORTER_ASSERT(reporter, structureAppropriate);
// the image should always maintain its size.
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
// making the pattern as large as the container prevents
// it from repeating.
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "width"), "100%") == 0);
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "height"), "100%") == 0);
}
DEF_TEST(SVGDevice_image_shader_tilex, reporter) {
SkDOM dom;
SkPaint paint;
int imageWidth = 3, imageHeight = 3;
int rectWidth = 10, rectHeight = 10;
ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
SkTileMode::kRepeat, SkTileMode::kClamp);
const SkDOM::Node* root = dom.finishParsing();
const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
if (innerSvg == nullptr) {
ERRORF(reporter, "inner svg element not found");
return;
}
const SkDOM::Node *patternNode, *imageNode, *rectNode;
bool structureAppropriate =
FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
REPORTER_ASSERT(reporter, structureAppropriate);
// the imageNode should always maintain its size.
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
// if the patternNode width matches the imageNode width,
// it will repeat in along the x axis.
REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "width")) == imageWidth);
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "height"), "100%") == 0);
}
DEF_TEST(SVGDevice_image_shader_tiley, reporter) {
SkDOM dom;
SkPaint paint;
int imageNodeWidth = 3, imageNodeHeight = 3;
int rectNodeWidth = 10, rectNodeHeight = 10;
ImageShaderTestSetup(&dom, &paint, imageNodeWidth, imageNodeHeight, rectNodeWidth,
rectNodeHeight, SkTileMode::kClamp, SkTileMode::kRepeat);
const SkDOM::Node* root = dom.finishParsing();
const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
if (innerSvg == nullptr) {
ERRORF(reporter, "inner svg element not found");
return;
}
const SkDOM::Node *patternNode, *imageNode, *rectNode;
bool structureAppropriate =
FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
REPORTER_ASSERT(reporter, structureAppropriate);
// the imageNode should always maintain its size.
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageNodeWidth);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageNodeHeight);
// making the patternNode as large as the container prevents
// it from repeating.
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(patternNode, "width"), "100%") == 0);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "height")) == imageNodeHeight);
}
DEF_TEST(SVGDevice_image_shader_tileboth, reporter) {
SkDOM dom;
SkPaint paint;
int imageWidth = 3, imageHeight = 3;
int rectWidth = 10, rectHeight = 10;
ImageShaderTestSetup(&dom, &paint, imageWidth, imageHeight, rectWidth, rectHeight,
SkTileMode::kRepeat, SkTileMode::kRepeat);
const SkDOM::Node* root = dom.finishParsing();
const SkDOM::Node *patternNode, *imageNode, *rectNode;
const SkDOM::Node* innerSvg = dom.getFirstChild(root, "svg");
if (innerSvg == nullptr) {
ERRORF(reporter, "inner svg element not found");
return;
}
bool structureAppropriate =
FindImageShaderNodes(reporter, &dom, innerSvg, &patternNode, &imageNode, &rectNode);
REPORTER_ASSERT(reporter, structureAppropriate);
// the imageNode should always maintain its size.
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "width")) == imageWidth);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(imageNode, "height")) == imageHeight);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "width")) == imageWidth);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(patternNode, "height")) == imageHeight);
}
DEF_TEST(SVGDevice_ColorFilters, reporter) {
SkDOM dom;
SkPaint paint;
paint.setColorFilter(SkColorFilters::Blend(SK_ColorRED, SkBlendMode::kSrcIn));
{
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* filterElement = dom.getFirstChild(rootElement, "filter");
ABORT_TEST(reporter, !filterElement, "filter element not found");
const SkDOM::Node* floodElement = dom.getFirstChild(filterElement, "feFlood");
ABORT_TEST(reporter, !floodElement, "feFlood element not found");
const SkDOM::Node* compositeElement = dom.getFirstChild(filterElement, "feComposite");
ABORT_TEST(reporter, !compositeElement, "feComposite element not found");
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(filterElement, "width"), "100%") == 0);
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(filterElement, "height"), "100%") == 0);
REPORTER_ASSERT(reporter,
strcmp(dom.findAttr(floodElement, "flood-color"), "red") == 0);
REPORTER_ASSERT(reporter, atoi(dom.findAttr(floodElement, "flood-opacity")) == 1);
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(compositeElement, "in"), "flood") == 0);
REPORTER_ASSERT(reporter, strcmp(dom.findAttr(compositeElement, "operator"), "in") == 0);
}
DEF_TEST(SVGDevice_textpath, reporter) {
SkDOM dom;
SkFont font(ToolUtils::create_portable_typeface());
SkPaint paint;
auto check_text = [&](uint32_t flags, bool expect_path) {
// By default, we emit <text> nodes.
{
auto svgCanvas = MakeDOMCanvas(&dom, flags);
svgCanvas->drawString("foo", 100, 100, font, paint);
}
const auto* rootElement = dom.finishParsing();
REPORTER_ASSERT(reporter, rootElement, "root element not found");
const auto* textElement = dom.getFirstChild(rootElement, "text");
REPORTER_ASSERT(reporter, !!textElement == !expect_path, "unexpected text element");
const auto* pathElement = dom.getFirstChild(rootElement, "path");
REPORTER_ASSERT(reporter, !!pathElement == expect_path, "unexpected path element");
};
// By default, we emit <text> nodes.
check_text(0, /*expect_path=*/false);
// With kConvertTextToPaths_Flag, we emit <path> nodes.
check_text(SkSVGCanvas::kConvertTextToPaths_Flag, /*expect_path=*/true);
// We also use paths in the presence of path effects.
SkScalar intervals[] = {10, 5};
paint.setPathEffect(SkDashPathEffect::Make(intervals, SK_ARRAY_COUNT(intervals), 0));
check_text(0, /*expect_path=*/true);
}
DEF_TEST(SVGDevice_fill_stroke, reporter) {
struct {
SkColor color;
SkPaint::Style style;
const char* expected_fill;
const char* expected_stroke;
} gTests[] = {
{ SK_ColorBLACK, SkPaint::kFill_Style , nullptr, nullptr },
{ SK_ColorBLACK, SkPaint::kStroke_Style, "none" , "black" },
{ SK_ColorRED , SkPaint::kFill_Style , "red" , nullptr },
{ SK_ColorRED , SkPaint::kStroke_Style, "none" , "red" },
};
for (const auto& tst : gTests) {
SkPaint p;
p.setColor(tst.color);
p.setStyle(tst.style);
SkDOM dom;
{
MakeDOMCanvas(&dom)->drawRect(SkRect::MakeWH(100, 100), p);
}
const auto* root = dom.finishParsing();
REPORTER_ASSERT(reporter, root, "root element not found");
const auto* rect = dom.getFirstChild(root, "rect");
REPORTER_ASSERT(reporter, rect, "rect element not found");
const auto* fill = dom.findAttr(rect, "fill");
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);
}
DEF_TEST(SVGDevice_path_effect, reporter) {
SkDOM dom;
SkPaint paint;
paint.setColor(SK_ColorRED);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(10);
paint.setStrokeCap(SkPaint::kRound_Cap);
// Produces a line of three red dots.
SkScalar intervals[] = {0, 20};
sk_sp<SkPathEffect> pathEffect = SkDashPathEffect::Make(intervals, 2, 0);
paint.setPathEffect(pathEffect);
SkPoint points[] = {{50, 15}, {100, 15}, {150, 15} };
{
auto svgCanvas = MakeDOMCanvas(&dom);
svgCanvas->drawPoints(SkCanvas::kLines_PointMode, 3, points, paint);
}
const auto* rootElement = dom.finishParsing();
REPORTER_ASSERT(reporter, rootElement, "root element not found");
const auto* pathElement = dom.getFirstChild(rootElement, "path");
REPORTER_ASSERT(reporter, pathElement, "path element not found");
// The SVG path to draw the three dots is a complex list of instructions.
// To avoid test brittleness, we don't attempt to match the entire path.
// Instead, we simply confirm there are three (M)ove instructions, one per
// dot. If path effects were not being honored, we would expect only one
// Move instruction, to the starting position, before drawing a continuous
// straight line.
const auto* d = dom.findAttr(pathElement, "d");
int mCount = 0;
const char* pos;
for (pos = d; *pos != '\0'; pos++) {
mCount += (*pos == 'M') ? 1 : 0;
}
REPORTER_ASSERT(reporter, mCount == 3);
}
#endif