FGFS-4.1/OpenSceneGraph
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Improved filepath handling, and increased the image resolution for better rendering quality

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This commit is contained in:
Robert Osfield 2008-11-12 14:57:30 +00:00
parent 771dc7d645
commit 69effce44e
1 changed files with 24 additions and 6 deletions
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30
examples/osgpdf/osgpdf.cpp
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@ -6,6 +6,8 @@
#include <osgViewer/Viewer> #include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers> #include <osgViewer/ViewerEventHandlers>
#include <osgDB/FileUtils>
#include <osgDB/FileNameUtils>
#include <osgDB/ReadFile> #include <osgDB/ReadFile>
#include <cairo.h> #include <cairo.h>
@ -93,20 +95,33 @@ class PdfImage : public CarioImage
bool open(const std::string& filename) bool open(const std::string& filename)
{ {
osg::notify(osg::NOTICE)<<"open("<<filename<<")"<<std::endl; osg::notify(osg::NOTICE)<<"open("<<filename<<")"<<std::endl;
std::string foundFile = osgDB::findDataFile(filename);
if (foundFile.empty())
{
osg::notify(osg::NOTICE)<<"could not find filename="<<filename<<std::endl;
return false;
}
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
foundFile = osgDB::getRealPath(foundFile);
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
static bool gTypeInit = false; static bool gTypeInit = false;
if(!gTypeInit) if(!gTypeInit)
{ {
g_type_init(); g_type_init();
gTypeInit = true; gTypeInit = true;
} }
std::string uri = std::string("file:") + foundFile;
PopplerDocument* doc = poppler_document_new_from_file(filename.c_str(), NULL, NULL); PopplerDocument* doc = poppler_document_new_from_file(uri.c_str(), NULL, NULL);
if (!doc) if (!doc)
{ {
osg::notify(osg::NOTICE)<<" could not open("<<filename<<")"<<std::endl; osg::notify(osg::NOTICE)<<" could not open("<<filename<<"), uri="<<uri<<std::endl;
return false; return false;
} }
@ -170,7 +185,7 @@ class PdfImage : public CarioImage
poppler_page_get_size(page, &w, &h); poppler_page_get_size(page, &w, &h);
create((unsigned int)(w),(unsigned int)(h)); create((unsigned int)(w*2.0),(unsigned int)(h*2.0));
double r = 1.0; double r = 1.0;
double g = 1.0; double g = 1.0;
@ -180,11 +195,14 @@ class PdfImage : public CarioImage
cairo_save(_context); cairo_save(_context);
cairo_set_source_rgba(_context, r, g, b, a); cairo_set_source_rgba(_context, r, g, b, a);
cairo_rectangle(_context, 0.0, 0.0, w, h); cairo_rectangle(_context, 0.0, 0.0, double(s()), double(t()));
cairo_fill(_context); cairo_fill(_context);
cairo_scale(_context, double(s())/w, double(t())/h);
poppler_page_render(page, getContext()); poppler_page_render(page, getContext());
cairo_restore(_context); cairo_restore(_context);
dirty(); dirty();