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Fixed handling of Font implementations that don't handle multiple font resolutions.

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This commit is contained in:
Robert Osfield 2011-05-13 19:08:04 +00:00
parent 460f433ca7
commit fe1c75aa8a
10 changed files with 59 additions and 32 deletions
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7
include/osgQt/QFontImplementation
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@ -30,16 +30,19 @@ public:
virtual std::string getFileName() const;
void setFontResolution(const osgText::FontResolution& fontSize);
virtual bool supportsMultipleFontResolutions() const { return true; }
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int charcode) { return 0; }
virtual osg::Vec2 getKerning(unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType kerningType);
virtual bool hasVertical() const;
protected:
std::string _filename;
osgText::FontResolution _currentRes;
QFont _font;
};

6
include/osgText/Font
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@ -161,13 +161,15 @@ public:
typedef OpenThreads::Mutex FontMutex;
typedef std::vector< osg::ref_ptr<GlyphTexture> > GlyphTextureList;
GlyphTextureList& getGlyphTextureList() { return _glyphTextureList; }
protected:
virtual ~Font();
void addGlyph(const FontResolution& fontRes, unsigned int charcode, Glyph* glyph);
typedef std::vector< osg::ref_ptr<GlyphTexture> > GlyphTextureList;
typedef std::vector< osg::ref_ptr<osg::StateSet> > StateSetList;
typedef std::map< unsigned int, osg::ref_ptr<Glyph> > GlyphMap;
typedef std::map< unsigned int, osg::ref_ptr<Glyph3D> > Glyph3DMap;
@ -214,6 +216,8 @@ public:
virtual std::string getFileName() const = 0;
virtual bool supportsMultipleFontResolutions() const = 0;
/** Get a Glyph for specified charcode, and the font size nearest to the current font size hint.*/
virtual Glyph* getGlyph(const FontResolution& fontRes, unsigned int charcode) = 0;

3
include/osgText/Glyph
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@ -263,6 +263,9 @@ public:
/** Resize any per context GLObject buffers to specified size. */
virtual void resizeGLObjectBuffers(unsigned int maxSize);
/** create an image that maps all the associated Glyph's onto a single image, that is equivilant to what will be downloaded to the texture.*/
osg::Image* createImage();
protected:
virtual ~GlyphTexture();

2
src/osgPlugins/freetype/FreeTypeFont.h
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@ -31,6 +31,8 @@ public:
virtual std::string getFileName() const { return _filename; }
virtual bool supportsMultipleFontResolutions() const { return true; }
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes,unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int charcode);

2
src/osgPlugins/txf/TXFFont.h
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@ -28,6 +28,8 @@ public:
virtual std::string getFileName() const;
virtual bool supportsMultipleFontResolutions() const { return false; }
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int) { return 0; }

17
src/osgQt/QFontImplementation.cpp
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@ -27,8 +27,6 @@ QFontImplementation::QFontImplementation(const QFont& font) :
_filename(font.toString().toStdString() + ".qfont"),
_font(font)
{
_currentRes.first = 0;
_currentRes.second = 0;
}
QFontImplementation::~QFontImplementation()
@ -41,22 +39,13 @@ QFontImplementation::getFileName() const
return _filename;
}
void
QFontImplementation::setFontResolution(const osgText::FontResolution& fontSize)
{
if (fontSize == _currentRes)
return;
_currentRes = fontSize;
_font.setPixelSize(fontSize.second);
}
osgText::Glyph*
QFontImplementation::getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode)
{
setFontResolution(fontRes);
unsigned int fontSize = fontRes.second;
_font.setPixelSize(fontSize);
float coord_scale = 1.0f/float(_currentRes.second);
float coord_scale = 1.0f/float(fontSize);
QFontMetrics fontMetrics(_font);
QFontMetricsF fontMetricsF(_font);

5
src/osgText/DefaultFont.cpp
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@ -33,11 +33,6 @@ DefaultFont::~DefaultFont()
{
}
void DefaultFont::setSize(unsigned int, unsigned int)
{
OSG_INFO<<"DefaultFont::setSize(,) call is ignored."<<std::endl;
}
osgText::Glyph* DefaultFont::getGlyph(const FontResolution& fontRes, unsigned int charcode)
{
if (_sizeGlyphMap.empty()) return 0;

3
src/osgText/DefaultFont.h
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@ -30,8 +30,7 @@ public:
virtual std::string getFileName() const { return ""; }
/** NOP with DefaultFont since it only supports a single fixed sized font. */
virtual void setSize(unsigned int width, unsigned int height);
virtual bool supportsMultipleFontResolutions() const { return false; }
virtual osgText::Glyph* getGlyph(const FontResolution& fontRes, unsigned int charcode);

11
src/osgText/Font.cpp
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@ -350,9 +350,14 @@ osg::Texture::FilterMode Font::getMagFilterHint() const
Glyph* Font::getGlyph(const FontResolution& fontRes, unsigned int charcode)
{
if (!_implementation) return 0;
FontResolution fontResUsed(0,0);
if (_implementation->supportsMultipleFontResolutions()) fontResUsed = fontRes;
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
FontSizeGlyphMap::iterator itr = _sizeGlyphMap.find(fontRes);
FontSizeGlyphMap::iterator itr = _sizeGlyphMap.find(fontResUsed);
if (itr!=_sizeGlyphMap.end())
{
GlyphMap& glyphmap = itr->second;
@ -361,10 +366,10 @@ Glyph* Font::getGlyph(const FontResolution& fontRes, unsigned int charcode)
}
}
Glyph* glyph = _implementation.valid() ? _implementation->getGlyph(fontRes, charcode) : 0;
Glyph* glyph = _implementation->getGlyph(fontResUsed, charcode);
if (glyph)
{
addGlyph(fontRes, charcode, glyph);
addGlyph(fontResUsed, charcode, glyph);
return glyph;
}
else return 0;

31
src/osgText/Glyph.cpp
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@ -204,9 +204,6 @@ void GlyphTexture::apply(osg::State& state) const
}
// OSG_NOTICE<<"Texture width = "<<getTextureWidth()<<std::endl;
// OSG_NOTICE<<"Texture height = "<<getTextureHeight()<<std::endl;
// allocate the texture memory.
glTexImage2D( GL_TEXTURE_2D, 0, GL_ALPHA,
getTextureWidth(), getTextureHeight(), 0,
@ -379,9 +376,37 @@ void GlyphTexture::setThreadSafeRefUnref(bool threadSafe)
void GlyphTexture::resizeGLObjectBuffers(unsigned int maxSize)
{
osg::Texture2D::resizeGLObjectBuffers(maxSize);
unsigned int initialSize = _glyphsToSubload.size();
_glyphsToSubload.resize(maxSize);
for(unsigned i=initialSize; i<_glyphsToSubload.size(); ++i)
{
for(GlyphRefList::iterator itr = _glyphs.begin();
itr != _glyphs.end();
++itr)
{
_glyphsToSubload[i].push_back(itr->get());
}
}
}
osg::Image* GlyphTexture::createImage()
{
osg::ref_ptr<osg::Image> image = new osg::Image;
image->allocateImage(getTextureWidth(), getTextureHeight(), 1, GL_ALPHA, GL_UNSIGNED_BYTE);
memset(image->data(), 0, image->getTotalSizeInBytes());
for(GlyphRefList::iterator itr = _glyphs.begin();
itr != _glyphs.end();
++itr)
{
Glyph* glyph = itr->get();
image->copySubImage(glyph->getTexturePositionX(), glyph->getTexturePositionY(), 0, glyph);
}
return image.release();
}
// all the methods in Font::Glyph have been made non inline because VisualStudio6.0 is STUPID, STUPID, STUPID PILE OF JUNK.
Glyph::Glyph(Font* font, unsigned int glyphCode):