/usr/lib/Wt/test/paintdevice/WRasterTest.C is in witty-examples 3.1.10-1ubuntu2.
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* Copyright (C) 2011 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifdef WT_HAS_WRASTERIMAGE
#include <boost/test/unit_test.hpp>
#include <iostream>
#include <fstream>
#include <Wt/WRasterImage>
#include <Wt/WPainter>
#include <Wt/WPointF>
#include <Wt/Test/WTestEnvironment>
#include <Wt/Render/WTextRenderer>
namespace {
using namespace Wt;
class MultiLineTextRenderer : public Wt::Render::WTextRenderer
{
public:
MultiLineTextRenderer(WPainter& painter, const WRectF& rect)
: painter_(painter),
rect_(rect)
{ }
virtual double pageWidth(int page) const {
return rect_.right();
}
virtual double pageHeight(int page) const {
return 1E9;
}
virtual double margin(Side side) const {
switch (side) {
case Top: return rect_.top(); break;
case Left: return rect_.left(); break;
default:
return 0;
}
}
virtual WPaintDevice *startPage(int page) {
if (page > 0)
assert(false);
return painter_.device();
}
virtual void endPage(WPaintDevice *device) {
}
virtual WPainter *getPainter(WPaintDevice *device) {
return &painter_;
}
private:
WPainter& painter_;
WRectF rect_;
};
}
BOOST_AUTO_TEST_CASE( raster_test_textRenderer )
{
Wt::Test::WTestEnvironment environment;
Wt::WApplication app(environment);
Wt::WRasterImage rasterImage("png", 357, 193);
{
Wt::WPainter p(&rasterImage);
std::string text =
"<table style=\"width:357px;\"><tr><td style=\"padding:0px;height:"
"193px;color:rgb(247,17,117);text-align:left;vertical-align:top;"
"font-family: Arial;font-size: 60.0pt;font-weight: normal;\">"
"xxx</td></tr></table>";
MultiLineTextRenderer renderer(p, WRectF(0, 0, 357, 193));
renderer.render(text);
}
std::ofstream f("text_render_image_1.png");
rasterImage.write(f);
}
BOOST_AUTO_TEST_CASE( raster_test_dataUriImage )
{
Wt::Test::WTestEnvironment environment;
Wt::WApplication app(environment);
Wt::WRasterImage rasterImage("png", 80, 80);
Wt::WPainter p(&rasterImage);
{
std::string uri
= "data:image/gif;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw"
"AAAC8IyPqcvt3wCcDkiLc7C0qwyGHhSWpjQu5yqmCYsapyuvUUlvONmOZtfzgFz"
"ByTB10QgxOR0TqBQejhRNzOfkVJ+5YiUqrXF5Y5lKh/DeuNcP5yLWGsEbtLiOSp"
"a/TPg7JpJHxyendzWTBfX0cxOnKPjgBzi4diinWGdkF8kjdfnycQZXZeYGejmJl"
"ZeGl9i2icVqaNVailT6F5iJ90m6mvuTS4OK05M0vDk0Q4XUtwvKOzrcd3iq9uis"
"F81M1OIcR7lEewwcLp7tuNNkM3uNna3F2JQFo97Vriy/Xl4/f1cf5VWzXyym7PH"
"hhx4dbgYKAAA7";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
}
{
bool error = false;
try {
std::string uri = "data:image/gif;,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
} catch (...) {
error = true;
}
BOOST_REQUIRE(error);
}
{
bool error = false;
try {
std::string uri
= "data:image/tiff;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
} catch (...) {
error = true;
}
BOOST_REQUIRE(error);
}
{
bool error = false;
try {
std::string uri
= "data:;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
} catch (...) {
error = true;
}
BOOST_REQUIRE(error);
}
{
bool error = false;
try {
std::string uri = "data:;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
} catch (...) {
error = true;
}
BOOST_REQUIRE(error);
}
{
bool error = false;
try {
std::string uri = "data:image/gif;base64,";
Wt::WPainter::Image image(uri, 48, 48);
p.drawImage(Wt::WPointF(0,0), image);
} catch (...) {
error = true;
}
BOOST_REQUIRE(error);
}
p.end();
std::ofstream f("data_uri_image.png");
rasterImage.write(f);
}
#endif
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