PsychError SCREENTextBounds(void)
{
//for debugging
TextEncodingBase textEncodingBase;
TextEncodingVariant textEncodingVariant;
TextEncodingFormat textEncodingFormat;
///////
PsychWindowRecordType *winRec;
char *textCString;
Str255 textPString;
UniChar *textUniString;
OSStatus callError;
PsychRectType resultPsychRect, resultPsychNormRect;
ATSUTextLayout textLayout; //layout is a pointer to an opaque struct.
int stringLengthChars;
int uniCharBufferLengthElements, uniCharBufferLengthChars, uniCharBufferLengthBytes;
ByteCount uniCharStringLengthBytes;
TextToUnicodeInfo textToUnicodeInfo;
TextEncoding textEncoding;
ATSUStyle atsuStyle;
Boolean foundFont;
//for ATSU style attributes
PsychFontStructPtrType psychFontRecord;
//all subfunctions should have these two lines.
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check for correct the number of arguments before getting involved
PsychErrorExit(PsychCapNumInputArgs(2));
PsychErrorExit(PsychRequireNumInputArgs(2));
PsychErrorExit(PsychCapNumOutputArgs(2));
//get the window pointer and the text string and check that the window record has a font set
PsychAllocInWindowRecordArg(1, kPsychArgRequired, &winRec);
foundFont=PsychGetFontRecordFromFontNumber(winRec->textAttributes.textFontNumber, &psychFontRecord);
if(!foundFont)
PsychErrorExitMsg(PsychError_user, "Attempt to determine the bounds of text with no font or invalid font number");
//it would be better to both prevent the user from setting invalid font numbers and init to the OS 9 default font.
//read in the string and get its length and convert it to a unicode string.
PsychAllocInCharArg(2, kPsychArgRequired, &textCString);
stringLengthChars=strlen(textCString);
if(stringLengthChars > 255)
PsychErrorExitMsg(PsychError_unimplemented, "Cut corners and TextBounds will not accept a string longer than 255 characters");
CopyCStringToPascal(textCString, textPString);
uniCharBufferLengthChars= stringLengthChars * CHAR_TO_UNICODE_LENGTH_FACTOR;
uniCharBufferLengthElements= uniCharBufferLengthChars + 1;
uniCharBufferLengthBytes= sizeof(UniChar) * uniCharBufferLengthElements;
textUniString=(UniChar*)malloc(uniCharBufferLengthBytes);
//Using a TextEncoding type describe the encoding of the text to be converteed.
textEncoding=CreateTextEncoding(kTextEncodingMacRoman, kMacRomanDefaultVariant, kTextEncodingDefaultFormat);
//Take apart the encoding we just made to check it:
textEncodingBase=GetTextEncodingBase(textEncoding);
textEncodingVariant=GetTextEncodingVariant(textEncoding);
textEncodingFormat=GetTextEncodingFormat(textEncoding);
//Create a structure holding conversion information from the text encoding type we just created.
callError=CreateTextToUnicodeInfoByEncoding(textEncoding,&textToUnicodeInfo);
//Convert the text to a unicode string
callError=ConvertFromPStringToUnicode(textToUnicodeInfo, textPString, (ByteCount)uniCharBufferLengthBytes, &uniCharStringLengthBytes, textUniString);
//create the text layout object
callError=ATSUCreateTextLayout(&textLayout);
//associate our unicode text string with the text layout object
callError=ATSUSetTextPointerLocation(textLayout, textUniString, kATSUFromTextBeginning, kATSUToTextEnd, (UniCharCount)stringLengthChars);
//create an ATSU style object
callError=ATSUCreateStyle(&atsuStyle);
callError=ATSUClearStyle(atsuStyle);
//Not that we have a style object we have to set style charactersitics. These include but are more general than Font Manager styles.
//ATSU Style objects have three sets of characteristics: attributes, variations, and features.
//attributes are things we need to set to match OS 9 behavior, such as the font ID, size, boldness, and italicization.
//features are esoteric settings which we don't need for reproducing OS 9 behavior. Whatever clearstyle sets should be fine.
//font variations are axes of variation through the space of font characteristics. The font definition includes available axes of variation. Something else we can ignore for now.
PsychSetATSUStyleAttributesFromPsychWindowRecord(atsuStyle, winRec);
//don't bother to set the variations of the style.
//don't bother to set the features of the style.
//associate the style with our layout object. This call assigns a style to every character of the string to be displayed.
callError=ATSUSetRunStyle(textLayout, atsuStyle, (UniCharArrayOffset)0, (UniCharCount)stringLengthChars);
//Get the bounds for our text so that and create a texture of sufficient size to containt it.
ATSTrapezoid trapezoid;
ItemCount oActualNumberOfBounds = 0;
callError=ATSUGetGlyphBounds(textLayout, 0, 0, kATSUFromTextBeginning, kATSUToTextEnd, kATSUseDeviceOrigins, 0, NULL, &oActualNumberOfBounds);
if (callError || oActualNumberOfBounds!=1) {
PsychErrorExitMsg(PsychError_internal, "Failed to compute bounding box in call 1 to ATSUGetGlyphBounds() (nrbounds!=1)\n");
}
callError=ATSUGetGlyphBounds(textLayout, 0, 0, kATSUFromTextBeginning, kATSUToTextEnd, kATSUseDeviceOrigins, 1, &trapezoid, &oActualNumberOfBounds);
if (callError || oActualNumberOfBounds!=1) {
PsychErrorExitMsg(PsychError_internal, "Failed to retrieve bounding box in call 2 to ATSUGetGlyphBounds() (nrbounds!=1)\n");
}
resultPsychRect[kPsychLeft]=(Fix2X(trapezoid.upperLeft.x) < Fix2X(trapezoid.lowerLeft.x)) ? Fix2X(trapezoid.upperLeft.x) : Fix2X(trapezoid.lowerLeft.x);
resultPsychRect[kPsychRight]=(Fix2X(trapezoid.upperRight.x) > Fix2X(trapezoid.lowerRight.x)) ? Fix2X(trapezoid.upperRight.x) : Fix2X(trapezoid.lowerRight.x);
resultPsychRect[kPsychTop]=(Fix2X(trapezoid.upperLeft.y) < Fix2X(trapezoid.upperRight.y)) ? Fix2X(trapezoid.upperLeft.y) : Fix2X(trapezoid.upperRight.y);
resultPsychRect[kPsychBottom]=(Fix2X(trapezoid.lowerLeft.y) > Fix2X(trapezoid.lowerRight.y)) ? Fix2X(trapezoid.lowerLeft.y) : Fix2X(trapezoid.lowerRight.y);
PsychNormalizeRect(resultPsychRect, resultPsychNormRect);
PsychCopyOutRectArg(1, FALSE, resultPsychNormRect);
PsychCopyOutRectArg(2, FALSE, resultPsychRect);
//release resources
free((void*)textUniString);
callError=ATSUDisposeStyle(atsuStyle);
return(PsychError_none);
}
PsychError SCREENTextBounds(void)
{
//for debugging
TextEncodingBase textEncodingBase;
TextEncodingVariant textEncodingVariant;
TextEncodingFormat textEncodingFormat;
///////
PsychWindowRecordType *winRec;
char *textCString;
Str255 textPString;
UniChar *textUniString;
OSStatus callError;
PsychRectType resultPsychRect, resultPsychNormRect;
ATSUTextLayout textLayout; //layout is a pointer to an opaque struct.
int stringLengthChars;
int uniCharBufferLengthElements, uniCharBufferLengthChars, uniCharBufferLengthBytes, yPositionIsBaseline;
double textHeightToBaseline;
ByteCount uniCharStringLengthBytes;
TextToUnicodeInfo textToUnicodeInfo;
TextEncoding textEncoding;
ATSUStyle atsuStyle;
Boolean foundFont;
//for ATSU style attributes
PsychFontStructPtrType psychFontRecord;
//all subfunctions should have these two lines.
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check for correct the number of arguments before getting involved
PsychErrorExit(PsychCapNumInputArgs(5));
PsychErrorExit(PsychRequireNumInputArgs(2));
PsychErrorExit(PsychCapNumOutputArgs(2));
//get the window pointer and the text string and check that the window record has a font set
PsychAllocInWindowRecordArg(1, kPsychArgRequired, &winRec);
foundFont=PsychGetFontRecordFromFontNumber(winRec->textAttributes.textFontNumber, &psychFontRecord);
if(!foundFont)
PsychErrorExitMsg(PsychError_user, "Attempt to determine the bounds of text with no font or invalid font number");
//it would be better to both prevent the user from setting invalid font numbers and init to the OS 9 default font.
//read in the string and get its length and convert it to a unicode string.
PsychAllocInCharArg(2, kPsychArgRequired, &textCString);
stringLengthChars=strlen(textCString);
if(stringLengthChars < 1) PsychErrorExitMsg(PsychError_user, "You asked me to compute the bounding box of an empty text string?!? Sorry, that's a no no...");
if(stringLengthChars > 255) PsychErrorExitMsg(PsychError_unimplemented, "Cut corners and TextBounds will not accept a string longer than 255 characters");
CopyCStringToPascal(textCString, textPString);
uniCharBufferLengthChars= stringLengthChars * CHAR_TO_UNICODE_LENGTH_FACTOR;
uniCharBufferLengthElements= uniCharBufferLengthChars + 1;
uniCharBufferLengthBytes= sizeof(UniChar) * uniCharBufferLengthElements;
textUniString=(UniChar*)malloc(uniCharBufferLengthBytes);
PsychCopyInDoubleArg(3, kPsychArgOptional, &(winRec->textAttributes.textPositionX));
PsychCopyInDoubleArg(4, kPsychArgOptional, &(winRec->textAttributes.textPositionY));
//Using a TextEncoding type describe the encoding of the text to be converteed.
textEncoding=CreateTextEncoding(kTextEncodingMacRoman, kMacRomanDefaultVariant, kTextEncodingDefaultFormat);
//Take apart the encoding we just made to check it:
textEncodingBase=GetTextEncodingBase(textEncoding);
textEncodingVariant=GetTextEncodingVariant(textEncoding);
textEncodingFormat=GetTextEncodingFormat(textEncoding);
//Create a structure holding conversion information from the text encoding type we just created.
callError=CreateTextToUnicodeInfoByEncoding(textEncoding,&textToUnicodeInfo);
//Convert the text to a unicode string
callError=ConvertFromPStringToUnicode(textToUnicodeInfo, textPString, (ByteCount)uniCharBufferLengthBytes, &uniCharStringLengthBytes, textUniString);
//create the text layout object
callError=ATSUCreateTextLayout(&textLayout);
//associate our unicode text string with the text layout object
callError=ATSUSetTextPointerLocation(textLayout, textUniString, kATSUFromTextBeginning, kATSUToTextEnd, (UniCharCount)stringLengthChars);
//create an ATSU style object
callError=ATSUCreateStyle(&atsuStyle);
callError=ATSUClearStyle(atsuStyle);
//Not that we have a style object we have to set style charactersitics. These include but are more general than Font Manager styles.
//ATSU Style objects have three sets of characteristics: attributes, variations, and features.
//attributes are things we need to set to match OS 9 behavior, such as the font ID, size, boldness, and italicization.
//features are esoteric settings which we don't need for reproducing OS 9 behavior. Whatever clearstyle sets should be fine.
//font variations are axes of variation through the space of font characteristics. The font definition includes available axes of variation. Something else we can ignore for now.
PsychSetATSUStyleAttributesFromPsychWindowRecord(atsuStyle, winRec);
//don't bother to set the variations of the style.
//don't bother to set the features of the style.
//associate the style with our layout object. This call assigns a style to every character of the string to be displayed.
callError=ATSUSetRunStyle(textLayout, atsuStyle, (UniCharArrayOffset)0, (UniCharCount)stringLengthChars);
// Define the meaning of the y position of the specified drawing cursor.
// We get the global setting from the Screen preference, but allow to override
// it on a per-invocation basis via the optional 7th argument to 'DrawText':
yPositionIsBaseline = PsychPrefStateGet_TextYPositionIsBaseline();
PsychCopyInIntegerArg(5, kPsychArgOptional, &yPositionIsBaseline);
if (yPositionIsBaseline) {
// Y position of drawing cursor defines distance between top of text and
// baseline of text, i.e. the textheight excluding descenders of letters:
// Need to compute offset via ATSU:
ATSUTextMeasurement mleft, mright, mtop, mbottom;
callError=ATSUGetUnjustifiedBounds(textLayout, kATSUFromTextBeginning, kATSUToTextEnd, &mleft, &mright, &mbottom, &mtop);
if (callError) {
PsychErrorExitMsg(PsychError_internal, "Failed to compute unjustified text height to baseline in call to ATSUGetUnjustifiedBounds().\n");
}
// Only take height including ascenders into account, not the descenders.
// MK: Honestly, i have no clue why this is the correct calculation (or if it is
// the correct calculation), but visually it seems to provide the correct results
// and i'm not a typographic expert and don't intend to become one...
textHeightToBaseline = fabs(Fix2X(mbottom));
}
else {
// Y position of drawing cursor defines top of text, therefore no offset (==0) needed:
textHeightToBaseline = 0;
}
//Get the bounds for our text so that and create a texture of sufficient size to containt it.
ATSTrapezoid trapezoid;
ItemCount oActualNumberOfBounds = 0;
callError=ATSUGetGlyphBounds(textLayout, 0, 0, kATSUFromTextBeginning, kATSUToTextEnd, kATSUseDeviceOrigins, 0, NULL, &oActualNumberOfBounds);
if (callError || oActualNumberOfBounds!=1) {
PsychErrorExitMsg(PsychError_internal, "Failed to compute bounding box in call 1 to ATSUGetGlyphBounds() (nrbounds!=1)\n");
}
callError=ATSUGetGlyphBounds(textLayout, 0, 0, kATSUFromTextBeginning, kATSUToTextEnd, kATSUseDeviceOrigins, 1, &trapezoid, &oActualNumberOfBounds);
if (callError || oActualNumberOfBounds!=1) {
PsychErrorExitMsg(PsychError_internal, "Failed to retrieve bounding box in call 2 to ATSUGetGlyphBounds() (nrbounds!=1)\n");
}
resultPsychRect[kPsychLeft]=(Fix2X(trapezoid.upperLeft.x) < Fix2X(trapezoid.lowerLeft.x)) ? Fix2X(trapezoid.upperLeft.x) : Fix2X(trapezoid.lowerLeft.x);
resultPsychRect[kPsychRight]=(Fix2X(trapezoid.upperRight.x) > Fix2X(trapezoid.lowerRight.x)) ? Fix2X(trapezoid.upperRight.x) : Fix2X(trapezoid.lowerRight.x);
resultPsychRect[kPsychTop]=(Fix2X(trapezoid.upperLeft.y) < Fix2X(trapezoid.upperRight.y)) ? Fix2X(trapezoid.upperLeft.y) : Fix2X(trapezoid.upperRight.y);
resultPsychRect[kPsychBottom]=(Fix2X(trapezoid.lowerLeft.y) > Fix2X(trapezoid.lowerRight.y)) ? Fix2X(trapezoid.lowerLeft.y) : Fix2X(trapezoid.lowerRight.y);
PsychNormalizeRect(resultPsychRect, resultPsychNormRect);
resultPsychRect[kPsychLeft]=resultPsychNormRect[kPsychLeft] + winRec->textAttributes.textPositionX;
resultPsychRect[kPsychRight]=resultPsychNormRect[kPsychRight] + winRec->textAttributes.textPositionX;
resultPsychRect[kPsychTop]=resultPsychNormRect[kPsychTop] + winRec->textAttributes.textPositionY - textHeightToBaseline;
resultPsychRect[kPsychBottom]=resultPsychNormRect[kPsychBottom] + winRec->textAttributes.textPositionY - textHeightToBaseline;
PsychCopyOutRectArg(1, FALSE, resultPsychNormRect);
PsychCopyOutRectArg(2, FALSE, resultPsychRect);
//release resources
free((void*)textUniString);
callError=ATSUDisposeStyle(atsuStyle);
return(PsychError_none);
}
void QFontDatabase::createDatabase()
{
if(db)
return;
db = new QFontDatabasePrivate;
qfontdatabase_cleanup.set(&db);
FMFontFamilyIterator it;
QString foundry_name = "Mac";
if(!FMCreateFontFamilyIterator(NULL, NULL, kFMUseGlobalScopeOption, &it)) {
FMFontFamily fam;
QString fam_name;
while(!FMGetNextFontFamily(&it, &fam)) {
static Str255 n;
if(FMGetFontFamilyName(fam, n) != noErr)
qDebug("Qt: internal: WH0A, %s %d", __FILE__, __LINE__);
if(!n[0] || n[1] == '.') //throw out ones starting with a .
continue;
{
short fnum;
ATSUFontID fond;
GetFNum(n, &fnum);
if(ATSUFONDtoFontID(fnum, 0, &fond) != noErr)
continue;
}
TextEncoding encoding;
FMGetFontFamilyTextEncoding(fam, &encoding);
TextToUnicodeInfo uni_info;
CreateTextToUnicodeInfoByEncoding(encoding, &uni_info);
unsigned long len = n[0] * 2;
unsigned char *buff = (unsigned char *)malloc(len);
ConvertFromPStringToUnicode(uni_info, n, len, &len, (UniCharArrayPtr)buff);
fam_name = "";
for(unsigned long x = 0; x < len; x+=2) {
#if defined(__i386__)
fam_name += QChar(buff[x], buff[x+1]);
#else
fam_name += QChar(buff[x+1], buff[x]);
#endif
}
free(buff);
DisposeTextToUnicodeInfo(&uni_info);
QtFontFamily *family = db->family( fam_name, TRUE );
family->macFamily = fam;
for(int script = 0; script < QFont::LastPrivateScript; ++script)
family->scripts[script] = QtFontFamily::Supported;
QtFontFoundry *foundry = family->foundry( foundry_name, TRUE );
FMFontFamilyInstanceIterator fit;
if(!FMCreateFontFamilyInstanceIterator(fam, &fit)) {
FMFont font;
FMFontStyle font_style;
FMFontSize font_size;
while(!FMGetNextFontFamilyInstance(&fit, &font, &font_style, &font_size)) {
bool italic = (bool)(font_style & ::italic);
int weight = ((font_style & ::bold) ? QFont::Bold : QFont::Normal);
QtFontStyle::Key styleKey;
styleKey.italic = italic;
styleKey.oblique = false;
styleKey.weight = weight;
QtFontStyle *style = foundry->style( styleKey, TRUE );
style->smoothScalable = TRUE;
if( !italic ) {
styleKey.oblique = TRUE;
style = foundry->style( styleKey, TRUE );
style->smoothScalable = TRUE;
styleKey.oblique = FALSE;
}
if(weight < QFont::DemiBold) {
// Can make bolder
styleKey.weight = QFont::Bold;
if(italic) {
style = foundry->style( styleKey, TRUE );
style->smoothScalable = TRUE;
} else {
styleKey.oblique = TRUE;
style = foundry->style( styleKey, TRUE );
style->smoothScalable = TRUE;
}
}
}
FMDisposeFontFamilyInstanceIterator(&fit);
}
}
FMDisposeFontFamilyIterator(&it);
}
}
static
OSStatus AddTextLabel(
const char *textString,
CGContextRef cgContext,
Fixed currentXPos,
Fixed *currentYPos )
{
OSStatus err;
UniChar *textBuffer = NULL;
ByteCount textBufferLen;
ByteCount sourceRead;
ByteCount convertedTextLen;
TextToUnicodeInfo textToUnicodeInfo;
TextEncoding macEncoding;
// create an encoding for mac roman
macEncoding = CreateTextEncoding( kTextEncodingMacRoman,
kTextEncodingDefaultVariant, kTextEncodingDefaultFormat );
// create a text to unicode converter
err = CreateTextToUnicodeInfoByEncoding( macEncoding,
&textToUnicodeInfo );
require_noerr( err, AddTextLabel_err );
textBufferLen = strlen( textString );
// loop until we have a buffer big enough to hold the whole conversion
do {
// allocate a textBuffer. Twice the size of the text should be about right.
textBufferLen = textBufferLen * 2;
textBuffer = (UniChar *) realloc( textBuffer,
sizeof( char ) * textBufferLen );
require_action( textBuffer != NULL, AddTextLabel_err,
err = memFullErr );
// run the conversion. If we get a full error, then reallocate otherwise,
// bail
err = ConvertFromTextToUnicode( textToUnicodeInfo, strlen( textString ),
textString, kUnicodeUseFallbacksMask | kUnicodeLooseMappingsMask, 0,
NULL, NULL, NULL, textBufferLen, &sourceRead, &convertedTextLen,
textBuffer );
} while ( err == kTECOutputBufferFullStatus );
// dispose of the converter
DisposeTextToUnicodeInfo( &textToUnicodeInfo );
// fallback error is okay. Everything else is bad.
if ( err != kTECUsedFallbacksStatus )
{
require_noerr( err, AddTextLabel_err );
}
// finally, we can get to actual ATSUI stuff. Create the layout with
// all of the default stuff for the test labels.
err = DrawLayoutForStyleAndRunInfo( &gInfoStyle, 1, NULL, 0,
textBuffer, (UniCharCount) (convertedTextLen / 2), cgContext,
currentXPos, currentYPos );
require_noerr( err, AddTextLabel_err );
AddTextLabel_err:
if ( textBuffer != NULL )
{
free( textBuffer );
}
return err;
}
