- // Julian - we'll need to do this a different way now we've removed the
- // font directory system. Must find Stefan's original code.
-
- name = wxTheFontNameDirectory->GetAFMName(Family, Weight, Style);
- if (!name)
- name = "unknown";
-
- // get the directory of the AFM files
- char afmName[256];
- afmName[0] = 0;
- if (wxGetAFMPath())
- strcpy(afmName,wxGetAFMPath());
-
- // 2. open and process the file **********************************
-
- // a short explanation of the AFM format:
- // we have for each character a line, which gives its size
- // e.g.:
- //
- // C 63 ; WX 444 ; N question ; B 49 -14 395 676 ;
- //
- // that means, we have a character with ascii code 63, and width
- // (444/1000 * fontSize) points.
- // the other data is ignored for now!
- //
- // when the font has changed, we read in the right AFM file and store the
- // character widths in an array, which is processed below (see point 3.).
-
- // new elements JC Sun Aug 25 23:21:44 MET DST 1996
-
-
- strcat(afmName,name);
- strcat(afmName,".afm");
- FILE *afmFile = fopen(afmName,"r");
- if(afmFile==NULL){
- wxLogDebug("GetTextExtent: can't open AFM file '%s'\n",afmName);
- wxLogDebug(" using approximate values\n");
- int i;
- for (i=0; i<256; i++) lastWidths[i] = 500; // an approximate value
- lastDescender = -150; // dito.
- }else{
- int i;
- // init the widths array
- for(i=0; i<256; i++) lastWidths[i]= INT_MIN;
- // some variables for holding parts of a line
- char cString[10],semiString[10],WXString[10],descString[20];
- char upString[30], utString[30], encString[50];
- char line[256];
- int ascii,cWidth;
- // read in the file and parse it
- while(fgets(line,sizeof(line),afmFile)!=NULL){
- // A.) check for descender definition
- if(strncmp(line,"Descender",9)==0){
- if((sscanf(line,"%s%d",descString,&lastDescender)!=2)
- || (strcmp(descString,"Descender")!=0)) {
- wxLogDebug("AFM-file '%s': line '%s' has error (bad descender)\n",
- afmName,line);
- }
+ /* method for calculating string widths in postscript:
+ / read in the AFM (adobe font metrics) file for the
+ / actual font, parse it and extract the character widths
+ / and also the descender. this may be improved, but for now
+ / it works well. the AFM file is only read in if the
+ / font is changed. this may be chached in the future.
+ / calls to GetTextExtent with the font unchanged are rather
+ / efficient!!!
+ /
+ / for each font and style used there is an AFM file necessary.
+ / currently i have only files for the roman font family.
+ / I try to get files for the other ones!
+ /
+ / CAVE: the size of the string is currently always calculated
+ / in 'points' (1/72 of an inch). this should later on be
+ / changed to depend on the mapping mode.
+ / CAVE: the path to the AFM files must be set before calling this
+ / function. this is usually done by a call like the following:
+ / wxSetAFMPath("d:\\wxw161\\afm\\");
+ /
+ / example:
+ /
+ / wxPostScriptDC dc(NULL, TRUE);
+ / if (dc.Ok()){
+ / wxSetAFMPath("d:\\wxw161\\afm\\");
+ / dc.StartDoc("Test");
+ / dc.StartPage();
+ / wxCoord w,h;
+ / dc.SetFont(new wxFont(10, wxROMAN, wxNORMAL, wxNORMAL));
+ / dc.GetTextExtent("Hallo",&w,&h);
+ / dc.EndPage();
+ / dc.EndDoc();
+ / }
+ /
+ / by steve (stefan.hammes@urz.uni-heidelberg.de)
+ / created: 10.09.94
+ / updated: 14.05.95 */
+
+ /* these static vars are for storing the state between calls */
+ static int lastFamily= INT_MIN;
+ static int lastSize= INT_MIN;
+ static int lastStyle= INT_MIN;
+ static int lastWeight= INT_MIN;
+ static int lastDescender = INT_MIN;
+ static int lastWidths[256]; /* widths of the characters */
+
+ double UnderlinePosition = 0.0;
+ double UnderlineThickness = 0.0;
+
+ /* get actual parameters */
+ const int Family = fontToUse->GetFamily();
+ const int Size = fontToUse->GetPointSize();
+ const int Style = fontToUse->GetStyle();
+ const int Weight = fontToUse->GetWeight();
+
+ /* if we have another font, read the font-metrics */
+ if (Family!=lastFamily || Size!=lastSize || Style!=lastStyle || Weight!=lastWeight)
+ {
+ /* store actual values */
+ lastFamily = Family;
+ lastSize = Size;
+ lastStyle = Style;
+ lastWeight = Weight;
+
+ char *name = (char*) NULL;
+
+ switch (Family)
+ {
+ case wxMODERN:
+ {
+ if ((Style == wxITALIC) && (Weight == wxBOLD)) name = "CourBoO";
+ else if ((Style != wxITALIC) && (Weight == wxBOLD)) name = "CourBo";
+ else if ((Style == wxITALIC) && (Weight != wxBOLD)) name = "Cour0";
+ else name = "Cour";
+ }
+ break;
+ case wxROMAN:
+ {
+ if ((Style == wxITALIC) && (Weight == wxBOLD)) name = "TimesBoO";
+ else if ((Style != wxITALIC) && (Weight == wxBOLD)) name = "TimesBo";
+ else if ((Style == wxITALIC) && (Weight != wxBOLD)) name = "TimesO";
+ else name = "TimesRo";
+ }
+ break;
+ default:
+ {
+ if ((Style == wxITALIC) && (Weight == wxBOLD)) name = "HelvBoO";
+ else if ((Style != wxITALIC) && (Weight == wxBOLD)) name = "HelvBo";
+ else if ((Style == wxITALIC) && (Weight != wxBOLD)) name = "Helv0";
+ else name = "Helv";
+ }
+ break;
+ }
+
+ /* get the directory of the AFM files */
+ wxString afmName = wxEmptyString;
+ if (!m_printData.GetFontMetricPath().IsEmpty())
+ {
+ afmName = m_printData.GetFontMetricPath();
+ }
+
+ /* 2. open and process the file
+ / a short explanation of the AFM format:
+ / we have for each character a line, which gives its size
+ / e.g.:
+ /
+ / C 63 ; WX 444 ; N question ; B 49 -14 395 676 ;
+ /
+ / that means, we have a character with ascii code 63, and width
+ / (444/1000 * fontSize) points.
+ / the other data is ignored for now!
+ /
+ / when the font has changed, we read in the right AFM file and store the
+ / character widths in an array, which is processed below (see point 3.). */
+
+ /* new elements JC Sun Aug 25 23:21:44 MET DST 1996 */
+
+ afmName << name << wxT(".afm");
+ FILE *afmFile = wxFopen(afmName,wxT("r"));
+ if (afmFile==NULL)
+ {
+ afmName = wxThePrintSetupData->GetAFMPath();
+ afmName << wxFILE_SEP_PATH << name << wxT(".afm");
+ afmFile = wxFopen(afmName,wxT("r"));
projects / wxWidgets.git / blobdiff