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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCanvas.h"
#include "SkData.h"
#include "SkDOM.h"
#include "SkParse.h"
#include "SkStream.h"
#include "SkSVGCanvas.h"
#include "SkXMLWriter.h"
#include "Test.h"
#include <string.h>
namespace {
void check_text_node(skiatest::Reporter* reporter,
const SkDOM& dom,
const SkDOM::Node* root,
const SkPoint& offset,
unsigned scalarsPerPos,
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 = (scalarsPerPos < 1) ? 1 : textLen;
REPORTER_ASSERT(reporter, SkParse::Count(x) == xposCount);
SkAutoTMalloc<SkScalar> xpos(xposCount);
SkParse::FindScalars(x, xpos.get(), xposCount);
if (scalarsPerPos < 1) {
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] == -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;
SkPoint offset = SkPoint::Make(10, 20);
{
SkXMLParserWriter writer(dom.beginParsing());
SkAutoTUnref<SkCanvas> svgCanvas(SkSVGCanvas::Create(SkRect::MakeWH(100, 100),
&writer));
svgCanvas->drawText(txt, len, offset.x(), offset.y(), paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 0, expected);
{
SkAutoTMalloc<SkScalar> xpos(len);
for (int i = 0; i < SkToInt(len); ++i) {
xpos[i] = SkIntToScalar(txt[i]);
}
SkXMLParserWriter writer(dom.beginParsing());
SkAutoTUnref<SkCanvas> svgCanvas(SkSVGCanvas::Create(SkRect::MakeWH(100, 100),
&writer));
svgCanvas->drawPosTextH(txt, len, xpos, offset.y(), paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 1, expected);
{
SkAutoTMalloc<SkPoint> pos(len);
for (int i = 0; i < SkToInt(len); ++i) {
pos[i] = SkPoint::Make(SkIntToScalar(txt[i]), -SkIntToScalar(txt[i]));
}
SkXMLParserWriter writer(dom.beginParsing());
SkAutoTUnref<SkCanvas> svgCanvas(SkSVGCanvas::Create(SkRect::MakeWH(100, 100),
&writer));
svgCanvas->drawPosText(txt, len, pos, paint);
}
check_text_node(reporter, dom, dom.finishParsing(), offset, 2, expected);
}
}
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\t" }, // 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);
}
}
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