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https://github.com/darlinghq/darling-cocotron.git
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118 lines
3.8 KiB
Objective-C
118 lines
3.8 KiB
Objective-C
#import "O2Font+PDF.h"
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#import "O2PDFArray.h"
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#import "O2PDFDictionary.h"
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#import "O2PDFContext.h"
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#import <Foundation/NSArray.h>
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@implementation O2Font(PDF)
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extern NSString *O2MacRomanGlyphNames[256];
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uint8_t O2PDFMacRomanPositionOfGlyphName(NSString *name){
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static NSDictionary *map=nil;
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if(map==nil){
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NSMutableDictionary *mutmap=[NSDictionary new];
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int i;
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for(i=0;i<256;i++)
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[mutmap setObject:[NSNumber numberWithInt:i] forKey:O2MacRomanGlyphNames[i]];
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map=mutmap;
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}
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return [[map objectForKey:name] intValue];
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}
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O2PDFArray *O2FontCreatePDFWidthsWithEncoding(O2FontRef self,O2Glyph encoding[256]){
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CGFloat unitsPerEm=O2FontGetUnitsPerEm(self);
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O2PDFArray *result=[[O2PDFArray alloc] init];
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int widths[256];
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int i;
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O2FontGetGlyphAdvances(self,encoding,256,widths);
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for(i=32;i<256;i++){
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O2PDFReal width=(widths[i]/unitsPerEm)*1000; // normalized to 1000
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[result addNumber:width];
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}
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return result;
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}
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// this is overriden for GDI
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-(void)getMacRomanBytes:(unsigned char *)bytes forGlyphs:(const O2Glyph *)glyphs length:(unsigned)length {
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int i;
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for(i=0;i<length;i++){
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NSString *name=O2FontCopyGlyphNameForGlyph(self,glyphs[i]);
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bytes[i]=O2PDFMacRomanPositionOfGlyphName(name);
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[name release];
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}
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}
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-(const char *)pdfFontName {
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return [[[self->_name componentsSeparatedByString:@" "] componentsJoinedByString:@","] cString];
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}
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-(O2PDFDictionary *)_pdfFontDescriptorWithSize:(CGFloat)size {
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O2PDFDictionary *result=[O2PDFDictionary pdfDictionary];
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[result setNameForKey:"Type" value:"FontDescriptor"];
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[result setNameForKey:"FontName" value:[self pdfFontName]];
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[result setIntegerForKey:"Flags" value:4];
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CGFloat unitsPerEm=O2FontGetUnitsPerEm(self);
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O2PDFReal bbox[4];
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O2Rect bRect=O2FontGetFontBBox(self);
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bRect.origin.x/=unitsPerEm*size;
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bRect.origin.y/=unitsPerEm*size;
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bRect.size.width/=unitsPerEm*size;
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bRect.size.height/=unitsPerEm*size;
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bbox[0]=bRect.origin.x;
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bbox[1]=bRect.origin.y;
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bbox[2]=bRect.size.width;
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bbox[3]=bRect.size.height;
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[result setObjectForKey:"FontBBox" value:[O2PDFArray pdfArrayWithNumbers:bbox count:4]];
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[result setIntegerForKey:"ItalicAngle" value:O2FontGetItalicAngle(self)/unitsPerEm*size];
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[result setIntegerForKey:"Ascent" value:O2FontGetAscent(self)/unitsPerEm*size];
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[result setIntegerForKey:"Descent" value:O2FontGetDescent(self)/unitsPerEm*size];
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[result setIntegerForKey:"CapHeight" value:O2FontGetCapHeight(self)/unitsPerEm*size];
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[result setIntegerForKey:"StemV" value:0];
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[result setIntegerForKey:"StemH" value:0];
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return result;
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}
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-(O2PDFObject *)encodeReferenceWithContext:(O2PDFContext *)context size:(CGFloat)size {
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O2PDFObject *reference=[context referenceForFontWithName:self->_name size:size];
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if(reference==nil){
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O2PDFDictionary *result=[O2PDFDictionary pdfDictionary];
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O2Glyph *encoding=[self MacRomanEncoding];
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int i;
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[result setNameForKey:"Type" value:"Font"];
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[result setNameForKey:"Subtype" value:"TrueType"];
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[result setNameForKey:"BaseFont" value:[self pdfFontName]];
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[result setIntegerForKey:"FirstChar" value:32];
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[result setIntegerForKey:"LastChar" value:255];
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O2PDFArray *widths=O2FontCreatePDFWidthsWithEncoding(self,encoding);
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[result setObjectForKey:"Widths" value:[context encodeIndirectPDFObject:widths]];
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[widths release];
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[result setObjectForKey:"FontDescriptor" value:[context encodeIndirectPDFObject:[self _pdfFontDescriptorWithSize:size]]];
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[result setNameForKey:"Encoding" value:"MacRomanEncoding"];
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reference=[context encodeIndirectPDFObject:result];
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[context setReference:reference forFontWithName:self->_name size:size];
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}
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return reference;
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}
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@end
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