#include <ossimGdBitmapFont.h>

Inheritance diagram for ossimGdBitmapFont:

Public Member Functions
	ossimGdBitmapFont (const ossimString &familyName, const ossimString &styleName, const ossimGdFont *gdFontPtr)

	ossimGdBitmapFont (const ossimGdBitmapFont &rhs)

virtual	~ossimGdBitmapFont ()

virtual ossimObject *	dup () const

virtual const ossim_uint8 *	getBuf () const

virtual const ossim_uint8 *	rasterize ()

virtual void	getBoundingBox (ossimIrect &box)

bool	isFixed () const

virtual void	getFixedSizes (vector< ossimIpt > &sizes) const

Public Member Functions inherited from ossimFont
	ossimFont ()

	ossimFont (const ossimString &familyName, const ossimString &styleName, int horizontalPixelSize, int verticalPixelSize, int horizontalDeviceUnits=72, int verticalDeviceUnits=72)

	ossimFont (const ossimFont &rhs)

virtual const ossim_uint8 *	rasterize (const ossimString &s)

virtual void	setString (const ossimString &s)

virtual ossimString	getFamilyName () const

virtual ossimString	getStyleName () const

virtual void	setRotation (double rotationInDegrees)

virtual double	getRotation () const

virtual void	getRotation (double &rotation) const

virtual void	setHorizontalVerticalShear (double horizontalShear, double verticalShear)

virtual void	setVerticalShear (double verticalShear)

virtual void	setHorizontalShear (double horizontalShear)

virtual double	getVerticalShear () const

virtual double	getHorizontalShear () const

virtual void	setScale (double horizontal, double vertical)

virtual void	getScale (double &horizontal, double &vertical)

virtual void	setPixelSize (int horizontalPixelSize, int verticalPixelSize)

virtual void	setPixelSize (int pixelSize)

virtual void	getPixelSize (int &horizontal, int &vertical)

virtual long	getHorizontalPixelSize () const

virtual ossimIpt	getPixelSize () const

virtual long	getVerticalPixelSize () const

virtual void	setDeviceDpi (int horizontalDeviceUnits, int verticalDeviceUnits)

virtual void	getBufferRect (ossimIrect &bufRect)

virtual ossimIrect	getBufferRect ()

virtual void	getBoundingClipBox (ossimIrect &clippedBox)

virtual ossimIrect	getBoundingClipBox ()

virtual void	setClippingBox (const ossimIrect &clipBox=ossimIrect(0, 0, 0, 0))

virtual ossimIrect	getClippingBox () const

bool	isIdentityTransform () const

virtual void	getFontInformation (vector< ossimFontInformation > &fontInformationList) const

Public Member Functions inherited from ossimObject
	ossimObject ()

virtual	~ossimObject ()

virtual ossimString	getShortName () const

virtual ossimString	getLongName () const

virtual ossimString	getDescription () const

virtual ossimString	getClassName () const

virtual RTTItypeid	getType () const

virtual bool	canCastTo (ossimObject *obj) const

virtual bool	canCastTo (const RTTItypeid &id) const

virtual bool	canCastTo (const ossimString &parentClassName) const

virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const

virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)

virtual std::ostream &	print (std::ostream &out) const
	Generic print method. More...

virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const

virtual void	accept (ossimVisitor &visitor)

Public Member Functions inherited from ossimReferenced
	ossimReferenced ()

	ossimReferenced (const ossimReferenced &)

ossimReferenced &	operator= (const ossimReferenced &)

void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

int	referenceCount () const

Public Member Functions inherited from ossimErrorStatusInterface
	ossimErrorStatusInterface ()

virtual	~ossimErrorStatusInterface ()

virtual ossimErrorCode	getErrorStatus () const

virtual ossimString	getErrorStatusString () const

virtual void	setErrorStatus (ossimErrorCode error_status) const

virtual void	setErrorStatus () const

virtual void	clearErrorStatus () const

bool	hasError () const

virtual std::ostream &	print (std::ostream &out) const
	Outputs theErrorStatus as an ossimErrorCode and an ossimString. More...

Protected Member Functions
void	getActualScale (ossimDpt &scales) const

void	rasterizeNormal ()

void	allocateBuffer ()

Protected Member Functions inherited from ossimFont
virtual	~ossimFont ()

void	computeMatrix ()

Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Attributes
const ossimGdFont *	theGdFontPtr

long	theBufferSize

ossim_uint8 *	theOutputBuffer

Protected Attributes inherited from ossimFont
ossimString	theStringToRasterize

ossimString	theFamilyName

ossimString	theStyleName

double	theRotation

double	theHorizontalShear

double	theVerticalShear

double	theHorizontalScale

double	theVerticalScale

int	theHorizontalPixelSize

int	theVerticalPixelSize

int	theHorizontalDeviceUnits

int	theVerticalDeviceUnits

ossimIrect	theClippingBox

ossimIpt	theLocalOrigin

NEWMAT::Matrix	theAffineTransform

Protected Attributes inherited from ossimErrorStatusInterface
ossimErrorCode	theErrorStatus

Detailed Description

This is a wrapper for the gd library fonts. Note that this class will currently only support scaling. It will not support any other affine operation.

Definition at line 35 of file ossimGdBitmapFont.h.

Constructor & Destructor Documentation

◆ ossimGdBitmapFont() [1/2]

ossimGdBitmapFont::ossimGdBitmapFont	(	const ossimString &	familyName,
		const ossimString &	styleName,
		const ossimGdFont *	gdFontPtr
	)

Definition at line 15 of file ossimGdBitmapFont.cpp.

Referenced by dup().

    :ossimFont(familyName,
               styleName,
               (int)gdFontPtr->w,
               (int)gdFontPtr->h),
     theGdFontPtr(gdFontPtr),
     theBufferSize(0),
     theOutputBuffer(NULL)
 {
 }

◆ ossimGdBitmapFont() [2/2]

ossimGdBitmapFont::ossimGdBitmapFont ( const ossimGdBitmapFont & rhs )

Definition at line 28 of file ossimGdBitmapFont.cpp.

References theBufferSize, and theOutputBuffer.

    :ossimFont(rhs),
     theGdFontPtr(rhs.theGdFontPtr),
     theBufferSize(rhs.theBufferSize),
     theOutputBuffer(NULL)    
 {
    if(theBufferSize)
    {
       theOutputBuffer = new ossim_uint8[theBufferSize];
       memcpy(theOutputBuffer, rhs.theOutputBuffer, theBufferSize);
    }
 }

◆ ~ossimGdBitmapFont()

ossimGdBitmapFont::~ossimGdBitmapFont ( )

virtual

Definition at line 41 of file ossimGdBitmapFont.cpp.

References theOutputBuffer.

 {
    if(theOutputBuffer)
    {
       delete [] theOutputBuffer;
       theOutputBuffer = NULL;
    }
 }

Member Function Documentation

◆ allocateBuffer()

void ossimGdBitmapFont::allocateBuffer ( )

protected

Definition at line 222 of file ossimGdBitmapFont.cpp.

References getBoundingBox(), ossimIrect::height(), theBufferSize, theOutputBuffer, and ossimIrect::width().

Referenced by rasterize().

 {   
    ossimIrect box;
    
    getBoundingBox(box);
    long bufferSize = box.width()*box.height();
    if(bufferSize != theBufferSize)
    {
       theBufferSize = bufferSize;
       
       if(theOutputBuffer)
       {
          delete theOutputBuffer;
          theOutputBuffer = NULL;
       }
       if(!theOutputBuffer&&theBufferSize)
       {
          theOutputBuffer = new ossim_uint8[theBufferSize];
             
       }
    }   
 }

◆ dup()

virtual ossimObject* ossimGdBitmapFont::dup ( ) const

inlinevirtual

Implements ossimFont.

Definition at line 46 of file ossimGdBitmapFont.h.

References ossimGdBitmapFont().

       {
          return new ossimGdBitmapFont(*this);
       }

◆ getActualScale()

void ossimGdBitmapFont::getActualScale ( ossimDpt & scales ) const

protected

This will take into consideration the point size along the horizontal and vertical and also the scale values. So the actual scale will be:

Scale*(pointSize/fixedSize);

◆ getBoundingBox()

void ossimGdBitmapFont::getBoundingBox ( ossimIrect & box )

virtual

Will return the bounding box of the last string that was set to be rasterized in pixel space

Implements ossimFont.

Definition at line 50 of file ossimGdBitmapFont.cpp.

References ossimGdFont::h, ossimIrect::ll(), ossimIrect::lr(), max, min, ossimString::size(), ossimFont::theAffineTransform, theGdFontPtr, ossimFont::theHorizontalPixelSize, ossimFont::theHorizontalScale, ossimFont::theRotation, ossimFont::theStringToRasterize, ossimFont::theVerticalPixelSize, ossimFont::theVerticalScale, ossimIrect::ur(), ossimGdFont::w, ossimIpt::x, and ossimIpt::y.

Referenced by allocateBuffer(), and rasterizeNormal().

 {
    if(theStringToRasterize.size())
    {
       box = ossimIrect(0,0,
                        (int)ceil(theStringToRasterize.size()*theHorizontalPixelSize*theHorizontalScale)-1,
                        (int)ceil(theVerticalPixelSize*theVerticalScale)-1);
    }
    else
    {
       box = ossimIrect(0,
                        0,
                        0,
                        0);
    }
 
    // I currently don't support rotations and other affine operations so I will comment this
    // bounding box test out and use the above.
    //
 #if 0
    if(theGdFontPtr)
    {
       if((theRotation == 0.0)&&
          (theHorizontalScale == 1.0)&&
          (theVerticalScale   == 1.0))
       {
          box = ossimIrect(0,0, theGdFontPtr->w-1, theGdFontPtr->h-1);
       }
       else
       {
          ossimIrect localBox(0,0, theGdFontPtr->w-1, theGdFontPtr->h-1);
          double ulx, uly;
          double llx, lly;
          double lrx, lry;
          double urx, ury;
          
          double min_x, min_y, max_x, max_y;
 
          ulx = 0.0;
          uly = 0.0;
 
          llx = (theAffineTransform[0][0]*localBox.ll().x +
                 theAffineTransform[0][1]*localBox.ll().y);
          lly = theAffineTransform[1][0]*localBox.ll().x +
                theAffineTransform[1][1]*localBox.ll().y;
          
          lrx = (theAffineTransform[0][0]*localBox.lr().x +
                 theAffineTransform[0][1]*localBox.lr().y);
          lry = theAffineTransform[1][0]*localBox.lr().x +
                theAffineTransform[1][1]*localBox.lr().y;
          urx = (theAffineTransform[0][0]*localBox.ur().x +
                 theAffineTransform[0][1]*localBox.ur().y);
          ury = theAffineTransform[1][0]*localBox.ur().x +
                theAffineTransform[1][1]*localBox.ur().y;
 
          
          min_x = std::min(ulx, std::min(llx, (std::min(lrx, urx))));
          max_x = std::max(ulx, std::max(llx, (std::max(lrx, urx))));
 
          min_y = std::min(uly, std::min(lly, (std::min(lry, ury))));
          max_y = std::max(uly, std::max(lly, (std::max(lry, ury))));
 
 
          
          box = ossimIrect((int)floor(min_x), (int)floor(min_y),
                           (int)ceil(max_x), (int)ceil(max_y));
       }
    }
 #endif
 }

◆ getBuf()

virtual const ossim_uint8* ossimGdBitmapFont::getBuf ( ) const

inlinevirtual

Will return the previously rasterized buffer.

Implements ossimFont.

Definition at line 50 of file ossimGdBitmapFont.h.

References theOutputBuffer.

       {
          return theOutputBuffer;
       }

◆ getFixedSizes()

void ossimGdBitmapFont::getFixedSizes ( vector< ossimIpt > & sizes ) const

virtual

You can get a list of fixed sizes supported by this font.

Implements ossimFont.

Definition at line 245 of file ossimGdBitmapFont.cpp.

References ossimFont::theHorizontalPixelSize, and ossimFont::theVerticalPixelSize.

 {
    sizes.push_back(ossimIpt(theHorizontalPixelSize,
                             theVerticalPixelSize));
 }

◆ isFixed()

bool ossimGdBitmapFont::isFixed ( ) const

inlinevirtual

Returns true if this font is a fixed size font

Implements ossimFont.

Definition at line 59 of file ossimGdBitmapFont.h.

       {
          return true;
       }

◆ rasterize()

const ossim_uint8 * ossimGdBitmapFont::rasterize ( )

virtual

Will return an internal buffer for rasterizing and will

Implements ossimFont.

Definition at line 121 of file ossimGdBitmapFont.cpp.

References allocateBuffer(), rasterizeNormal(), theBufferSize, and theOutputBuffer.

 {
    // make sure the buffer is allocated for the output string
    allocateBuffer();
 
    if(theOutputBuffer)
    {
       memset(theOutputBuffer, 0, theBufferSize);
       rasterizeNormal();
    }
 
    return theOutputBuffer;
 }

◆ rasterizeNormal()

void ossimGdBitmapFont::rasterizeNormal ( )

protected

Definition at line 135 of file ossimGdBitmapFont.cpp.

References ossimGdFont::data, getBoundingBox(), ossimGdFont::h, ossimIrect::height(), ossimString::length(), ossimString::size(), theGdFontPtr, theOutputBuffer, ossimFont::theStringToRasterize, ossimGdFont::w, and ossimIrect::width().

Referenced by rasterize().

 {
    ossimIrect outBox;
    ossimIrect inBox(0,0,
                     (ossim_int32)theStringToRasterize.length()*theGdFontPtr->w-1,
                     theGdFontPtr->h-1);
    
    getBoundingBox(outBox);
 
    
    long charOffset = 0;
    long bufOffset  = 0;
    long inW    = inBox.width();
    long inH    = inBox.height();
    long outW = outBox.width();
    long outH = outBox.height();
    ossim_uint8* inBuf = new ossim_uint8[inBox.width()*inBox.height()];
       
    for(std::string::size_type character = 0;
        character < theStringToRasterize.size();
        ++character)
    {
       charOffset = theStringToRasterize[character];
       
       // we need to shift the offset to a positive value.
       // if it goes negative we just add 256 to the value.
       if(charOffset < 0)
       {
          charOffset += 256;
       }
 
       // which col do we start on
       bufOffset = (long)character*theGdFontPtr->w;
       
       // get the starting offset to the bitmap
       charOffset  = charOffset*theGdFontPtr->w*theGdFontPtr->h;
       
       for(long row = 0; row < (theGdFontPtr->h); ++row)
       {         
          for(long col = 0; col < theGdFontPtr->w; ++col)
          {
             if(theGdFontPtr->data[charOffset])
             {
                inBuf[bufOffset+col] = 255;
             }
             ++charOffset;
          }
          bufOffset += inW;
       }
    }
 
    if((inW == outW)&&(inH==outH))
    {
       memcpy(theOutputBuffer, inBuf, inW*inH);
    }
    else
    {
       // now lets expand or contract the input buf to the output buf.
       long *xLut = new long[outW];
       long *yLut = new long[outH];
       long i = 0;
       for(i = 0; i < outW; ++i)
       {
          xLut[i] = (int)(i*((double)inW/(double)outW));
       }
       for(i = 0; i < outH; ++i)
       {
          yLut[i] = (int)(i*((double)inH/(double)outH));
       }
       
       ossim_uint8* outBuf = theOutputBuffer;
       for(long row= 0; row < outH; ++row)
       {
          long inYOffset = yLut[row]*inW;
          for(long col=0; col < outW; ++col)
          {
             *outBuf = inBuf[inYOffset + xLut[col]];
             ++outBuf;
          }
       }
       delete [] xLut;
       delete [] yLut;
    }
 
    delete [] inBuf;
 }

Member Data Documentation

◆ theBufferSize

long ossimGdBitmapFont::theBufferSize

protected

Definition at line 69 of file ossimGdBitmapFont.h.

Referenced by allocateBuffer(), ossimGdBitmapFont(), and rasterize().

◆ theGdFontPtr

const ossimGdFont* ossimGdBitmapFont::theGdFontPtr

protected

Definition at line 67 of file ossimGdBitmapFont.h.

Referenced by getBoundingBox(), and rasterizeNormal().

◆ theOutputBuffer

ossim_uint8* ossimGdBitmapFont::theOutputBuffer

protected

Definition at line 70 of file ossimGdBitmapFont.h.

Referenced by allocateBuffer(), getBuf(), ossimGdBitmapFont(), rasterize(), rasterizeNormal(), and ~ossimGdBitmapFont().

The documentation for this class was generated from the following files:

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ossimGdBitmapFont() [1/2]

◆ ossimGdBitmapFont() [2/2]

◆ ~ossimGdBitmapFont()

Member Function Documentation

◆ allocateBuffer()

◆ dup()

◆ getActualScale()

◆ getBoundingBox()

◆ getBuf()

◆ getFixedSizes()

◆ isFixed()

◆ rasterize()

◆ rasterizeNormal()

Member Data Documentation

◆ theBufferSize

◆ theGdFontPtr

◆ theOutputBuffer