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/*************************************************************************
** EmSpecialTest.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2025 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program is free software; you can redistribute it and/or **
** modify it under the terms of the GNU General Public License as **
** published by the Free Software Foundation; either version 3 of **
** the License, or (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, but **
** WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#include <gtest/gtest.h>
#include <sstream>
#include "EmSpecialHandler.hpp"
#include "SpecialActions.hpp"
#include "XMLNode.hpp"
#include "XMLString.hpp"
#include "SVGTree.hpp"
using namespace std;
class EmSpecialTest : public ::testing::Test {
protected:
class ActionsRecorder : public EmptySpecialActions {
public:
ActionsRecorder () : x(), y() {}
void embed (const BoundingBox &bb) override {bbox.embed(bb);}
void setX (double xx) override {x = xx;}
void setY (double yy) override {x = yy;}
double getX () const override {return x;}
double getY () const override {return y;}
Color getFillColor () const override {return fillColor;}
void setFillColor (const Color &c) override {fillColor = c;}
Color getStrokeColor () const override {return strokeColor;}
void setStrokeColor (const Color &c) override {strokeColor = c;}
string getPageXML () const {ostringstream oss; oss << *svgTree().pageNode(); return oss.str();}
const Matrix& getMatrix () const override {static Matrix m(1); return m;}
void clear () {
SpecialActions::svgTree().reset();
SpecialActions::svgTree().newPage(1);
bbox = BoundingBox(0, 0, 0, 0);
}
/* void write (ostream &os) const {
os << "page: " << page << '\n'
<< "bbox: " << bbox.svgViewBoxString() << '\n';
} */
private:
double x, y;
BoundingBox bbox;
Color fillColor, strokeColor;
};
class MyEmSpecialHandler : public EmSpecialHandler {
public:
explicit MyEmSpecialHandler (SpecialActions &a) : actions(a) {}
void finishPage () {dviEndPage(0, actions);}
void processSpecial (const string &str) {stringstream ss; ss << str; process("em", ss, actions);}
protected:
SpecialActions &actions;
};
public:
EmSpecialTest () : handler(recorder) {}
void SetUp () override {
XMLString::DECIMAL_PLACES=2;
recorder.clear();
}
protected:
ActionsRecorder recorder;
MyEmSpecialHandler handler;
};
TEST_F(EmSpecialTest, basic) {
EXPECT_EQ(handler.name(), "em");
}
TEST_F(EmSpecialTest, lines1) {
DPair p[] = {DPair(0,0), DPair(0,10), DPair(10,10), DPair(10,0)};
int n = sizeof(p)/sizeof(DPair);
for (int i=0; i < n; i++) {
recorder.setX(p[i].x());
recorder.setY(p[i].y());
handler.processSpecial(string("point ")+XMLString(i));
}
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'/>");
handler.processSpecial("linewidth 2bp");
for (int i=0; i < n; i++)
handler.processSpecial(string("line ")+XMLString(i)+", "+XMLString((i+1)%n));
EXPECT_EQ(recorder.getPageXML(),
"<g id='page1'>\n"
"<line x1='0' y1='0' x2='10' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='10' y1='0' x2='10' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='10' y1='0' x2='0' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='0' y1='0' x2='0' y2='0' stroke-width='2' stroke='#000'/>\n"
"</g>"
);
}
TEST_F(EmSpecialTest, lines2) {
DPair p[] = {DPair(0,0), DPair(0,10), DPair(10,10), DPair(10,0)};
int n = sizeof(p)/sizeof(DPair);
handler.processSpecial("linewidth 2bp");
// define lines prior to the points
for (int i=0; i < n; i++)
handler.processSpecial(string("line ")+XMLString(i)+", "+XMLString((i+1)%n));
// define points
for (int i=0; i < n; i++) {
recorder.setX(p[i].x());
recorder.setY(p[i].y());
handler.processSpecial(string("point ")+XMLString(i));
}
handler.finishPage();
EXPECT_EQ(recorder.getPageXML(),
"<g id='page1'>\n"
"<line x1='0' y1='0' x2='10' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='10' y1='0' x2='10' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='10' y1='0' x2='0' y2='0' stroke-width='2' stroke='#000'/>\n"
"<line x1='0' y1='0' x2='0' y2='0' stroke-width='2' stroke='#000'/>\n"
"</g>"
);
}
TEST_F(EmSpecialTest, pline) {
handler.processSpecial("point 1, 10, 10");
handler.processSpecial("point 2, 100, 100");
handler.processSpecial("line 1, 2, 10bp");
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'>\n<line x1='10' y1='10' x2='100' y2='100' stroke-width='10' stroke='#000'/>\n</g>");
}
TEST_F(EmSpecialTest, vline) {
handler.processSpecial("point 1, 10, 10");
handler.processSpecial("point 2, 100, 100");
handler.processSpecial("line 1v, 2v, 10bp"); // cut line ends vertically
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'>\n<polygon points='10 17.07 10 2.93 100 92.93 100 107.07'/>\n</g>");
}
TEST_F(EmSpecialTest, hline) {
handler.processSpecial("point 1, 10, 10");
handler.processSpecial("point 2, 100, 100");
handler.processSpecial("line 1h, 2h, 10bp"); // cut line ends horizontally
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'>\n<polygon points='2.93 10 17.07 10 107.07 100 92.93 100'/>\n</g>");
}
TEST_F(EmSpecialTest, hvline) {
handler.processSpecial("point 1, 10, 10");
handler.processSpecial("point 2, 100, 100");
handler.processSpecial("line 1h, 2v, 10bp"); // cut line ends horizontally
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'>\n<polygon points='2.93 10 17.07 10 100 92.93 100 107.07'/>\n</g>");
recorder.clear();
recorder.setFillColor(Color(0.0, 0.0, 1.0));
handler.processSpecial("point 1, 10, 10");
handler.processSpecial("point 2, 100, 100");
handler.processSpecial("line 1v, 2h, 10bp"); // cut line ends horizontally
EXPECT_EQ(recorder.getPageXML(), "<g id='page1'>\n<polygon points='10 17.07 10 2.93 107.07 100 92.93 100' fill='#00f'/>\n</g>");
}
TEST_F(EmSpecialTest, lineto) {
DPair p[] = {DPair(0,0), DPair(0,10), DPair(10,10), DPair(10,0)};
int n = sizeof(p)/sizeof(DPair);
recorder.setStrokeColor(Color(1.0, 0.0, 0.0));
for (int i=0; i <= n; i++) {
recorder.setX(p[i%n].x());
recorder.setY(p[i%n].y());
handler.processSpecial("linewidth "+XMLString(2*i)+"bp");
handler.processSpecial(i == 0 ? "moveto" : "lineto");
}
EXPECT_EQ(recorder.getPageXML(),
"<g id='page1'>\n"
"<line x1='0' y1='0' x2='10' y2='0' stroke-width='2' stroke='#f00'/>\n"
"<line x1='10' y1='0' x2='10' y2='0' stroke-width='4' stroke='#f00'/>\n"
"<line x1='10' y1='0' x2='0' y2='0' stroke-width='6' stroke='#f00'/>\n"
"<line x1='0' y1='0' x2='0' y2='0' stroke-width='8' stroke='#f00'/>\n"
"</g>"
);
}
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