mirror of
https://github.com/cappuccino/cappuccino.git
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615 lines
16 KiB
Plaintext
615 lines
16 KiB
Plaintext
/*
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RTFProducer.j
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Serialize CPAttributedString to a RTF String
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Copyright (C) 2014 Daniel Boehringer
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This file is based on the RTFProducer from GNUStep
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(which i co-authored with Fred Kiefer in 1999)
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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@import <Foundation/CPAttributedString.j>
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@import "CPParagraphStyle.j"
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@import "CPColor.j"
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@import "CPGraphics.j"
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@import "CPFontManager.j"
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@global CPForegroundColorAttributeName
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@global CPBackgroundColorAttributeName
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@global CPUnderlineStyleAttributeName
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@global CPSuperscriptAttributeName
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@global CPBaselineOffsetAttributeName
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@global CPAttachmentAttributeName
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@global CPLigatureAttributeName
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@global CPKernAttributeName
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@global CPLeftTextAlignment
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@global CPRightTextAlignment
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@global CPCenterTextAlignment
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@global CPJustifiedTextAlignment
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@global CPNaturalTextAlignment
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var PAPERSIZE = @"PaperSize",
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LEFTMARGIN = @"LeftMargin",
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RIGHTMARGIN = @"RightMargin",
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TOPMARGIN = @"TopMargin",
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BUTTOMMARGIN = @"ButtomMargin";
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function _points2twips(a) { return (a) * 20.0; }
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@implementation _CPRTFProducer : CPObject
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{
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CPAttributedString text;
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CPMutableDictionary fontDict;
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CPMutableDictionary colorDict;
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CPDictionary docDict;
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CPMutableArray attachments;
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CPFont currentFont;
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CPColor fgColor;
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CPColor bgColor;
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CPColor ulColor;
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}
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#pragma mark -
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#pragma mark Class methods
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+ (CPString)produceRTF:(CPAttributedString)aText documentAttributes:(CPDictionary)dict
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{
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var mynew = [self new];
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return [mynew RTFDStringFromAttributedString:aText documentAttributes:dict];
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}
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#pragma mark -
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#pragma mark init methods
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- (id)init
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{
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if (self = [super init])
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{
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// maintain a dictionary for the used colours
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// (for rtf-header generation)
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colorDict = [CPMutableDictionary new];
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//maintain a dictionary for the used fonts
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//(for rtf-header generation)
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fontDict = [CPMutableDictionary new];
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fgColor = [CPColor blackColor];
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bgColor= [CPColor whiteColor];
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}
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return self;
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}
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// private stuff follows
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- (CPString)fontTable
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{
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if (![fontDict count])
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return @"";
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var fontlistString = "",
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fontEnum,
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currFont,
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keyArray;
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keyArray = [fontDict allKeys];
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keyArray = [keyArray sortedArrayUsingSelector:@selector(compare:)];
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fontEnum = [keyArray objectEnumerator];
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while ((currFont = [fontEnum nextObject]) !== nil)
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{
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var fontFamily,
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detail;
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if ([currFont isEqualToString:@"Symbol"])
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fontFamily = @"tech";
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else if ([currFont isEqualToString:@"Helvetica"])
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fontFamily = @"swiss";
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else if ([currFont isEqualToString:@"Arial"])
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fontFamily = @"swiss";
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else if ([currFont isEqualToString:@"Courier"])
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fontFamily = @"modern";
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else if ([currFont isEqualToString:@"Times"])
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fontFamily = @"roman";
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else fontFamily = @"nil";
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detail = [CPString stringWithFormat:@"%@\\f%@ %@;", [fontDict objectForKey:currFont], fontFamily, currFont];
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fontlistString += detail;
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}
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return [CPString stringWithFormat:@"{\\fonttbl%@}\n", fontlistString];
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}
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- (CPString)colorTable
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{
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if (![colorDict count])
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return @"";
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var result,
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count = [colorDict count],
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list = [CPMutableArray arrayWithCapacity:count],
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keyEnum = [colorDict keyEnumerator],
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next,
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i;
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while ((next = [keyEnum nextObject]) !== nil)
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{
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var cn = [colorDict objectForKey:next];
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[list insertObject:[CPColor colorWithCSSString:next] atIndex:[cn intValue]-1];
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}
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result = [CPString stringWithString:@"{\\colortbl;"];
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for (i = 0; i < count; i++)
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{
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var color = [[list objectAtIndex:i]
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colorUsingColorSpaceName:CPCalibratedRGBColorSpace];
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result += [CPString stringWithFormat:@"\\red%d\\green%d\\blue%d;",
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([color redComponent] * 255),
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([color greenComponent] * 255),
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([color blueComponent] * 255)];
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}
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result += @"}\n";
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return result;
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}
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- (CPString)documentAttributes
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{
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if (!docDict)
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return @"";
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var result,
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detail,
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val,
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num;
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result = [CPString string];
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val = [docDict objectForKey:PAPERSIZE];
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if (val)
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{
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var size = [val sizeValue];
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detail = [CPString stringWithFormat:@"\\paperw%d \\paperh%d",
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_points2twips(size.width),
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_points2twips(size.height)];
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result += detail;
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}
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num = [docDict objectForKey:LEFTMARGIN];
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if (num)
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{
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var f = [num floatValue];
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detail = [CPString stringWithFormat:@"\\margl%d", _points2twips(f)];
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result += detail;
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}
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num = [docDict objectForKey:RIGHTMARGIN];
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if (num)
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{
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var f = [num floatValue];
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detail = [CPString stringWithFormat:@"\\margr%d", _points2twips(f)];
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result += detail;
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}
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num = [docDict objectForKey:TOPMARGIN];
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if (num)
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{
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var f = [num floatValue];
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detail = [CPString stringWithFormat:@"\\margt%d", _points2twips(f)];
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result += detail;
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}
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num = [docDict objectForKey:BUTTOMMARGIN];
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if (num)
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{
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var f = [num floatValue];
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detail = [CPString stringWithFormat:@"\\margb%d", _points2twips(f)];
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result += detail;
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}
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return result;
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}
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- (CPString)headerString
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{
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var result;
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result = [CPString stringWithString:@"{\\rtf1\\ansi"];
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result += [self fontTable];
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result += [self colorTable];
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result += [self documentAttributes];
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return result;
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}
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- (CPString)trailerString
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{
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return @"}";
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}
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- (CPString)fontToken:(CPString) fontName
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{
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var fCount = [fontDict objectForKey:fontName];
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if (fCount == nil)
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{
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var count = [fontDict count];
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fCount = [CPString stringWithFormat:@"\\f%d", count];
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[fontDict setObject:fCount forKey:fontName];
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}
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return fCount;
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}
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- (int)numberForColor:(CPColor)color
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{
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var num = [colorDict objectForKey:[color cssString]];
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if (!num)
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[colorDict setObject:num = [CPNumber numberWithInt:[colorDict count] + 1]
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forKey:[color cssString]];
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return [num intValue];
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}
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- (CPString)paragraphStyle:(CPParagraphStyle)paraStyle
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{
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var headerString = [CPString stringWithString:@"\\pard"],
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twips;
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if (paraStyle == nil)
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return headerString;
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switch ([paraStyle alignment])
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{
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case CPRightTextAlignment:
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headerString += @"\\qr";
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break;
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case CPCenterTextAlignment:
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headerString += @"\\qc";
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break;
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case CPLeftTextAlignment:
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headerString += @"\\ql";
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break;
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case CPJustifiedTextAlignment:
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headerString += @"\\qj";
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break;
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default:
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headerString += @"\\ql";
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break;
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}
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// write first line indent and left indent
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var twips = _points2twips([paraStyle firstLineHeadIndent]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\fi%d", twips];
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twips = _points2twips([paraStyle headIndent]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\li%d", twips];
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twips = _points2twips([paraStyle tailIndent]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\ri%d", twips];
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twips = _points2twips([paraStyle paragraphSpacing]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\sa%d", twips];
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twips = _points2twips([paraStyle minimumLineHeight]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\sl%d", twips];
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twips = _points2twips([paraStyle maximumLineHeight]);
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if (twips != 0.0)
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headerString += [CPString stringWithFormat:@"\\sl-%d", twips];
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var enumerator,
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tab;
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enumerator = [[paraStyle tabStops] objectEnumerator];
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while ((tab = [enumerator nextObject]))
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{
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switch ([tab tabStopType])
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{
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case CPLeftTabStopType:
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// no tabkind emission needed
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break;
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/* case NSRightTabStopType:
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headerString += @"\\tqr";
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break;
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case NSCenterTabStopType:
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headerString += @"\\tqc";
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break;
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case NSDecimalTabStopType:
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headerString += @"\\tqdec";
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break;
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default:
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NSLog(@"Unknown tab stop type.");
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*/
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}
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headerString += [CPString stringWithFormat:@"\\tx%d",_points2twips([tab location])];
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}
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return headerString;
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}
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- (CPString)runStringForString:(CPString) substring
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attributes:(CPDictionary) attributes
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paragraphStart:(BOOL) first
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{
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var result = "",
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headerString = "",
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trailerString = "",
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attribEnum,
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currAttrib;
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if (first)
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{
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var paraStyle = [attributes objectForKey:CPParagraphStyleAttributeName];
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headerString += [self paragraphStyle:paraStyle];
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}
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/*
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* analyze attributes of current run
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*
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* FIXME: All the character attributes should be output relative to the font
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* attributes of the paragraph. So if the paragraph has underline on it should
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* still be possible to switch it off for some characters, which currently is
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* not possible.
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*/
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attribEnum = [attributes keyEnumerator];
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while ((currAttrib = [attribEnum nextObject]) != nil)
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{
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if ([currAttrib isEqualToString:CPFontAttributeName])
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{
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/*
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* handle fonts
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*/
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var font,
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fontName,
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traits;
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font = [attributes objectForKey:CPFontAttributeName];
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fontName = [font familyName];
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traits = [[CPFontManager sharedFontManager] traitsOfFont:font];
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/*
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* font name
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*/
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if (currentFont == nil || ![fontName isEqualToString:[currentFont familyName]])
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headerString += [self fontToken:fontName];
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/*
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* font size
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*/
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if (currentFont == nil || [font size] != [currentFont size])
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{
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var points = [font size] * 2,
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pString;
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pString = [CPString stringWithFormat:@"\\fs%d", points];
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headerString += pString;
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}
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/*
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* font attributes
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*/
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if (traits & CPItalicFontMask)
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{
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headerString += @"\\i";
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trailerString += @"\\i0";
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}
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if (traits & CPBoldFontMask)
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{
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headerString += @"\\b";
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trailerString += @"\\b0";
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}
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if (first)
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currentFont = font;
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}
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else if ([currAttrib isEqualToString:CPForegroundColorAttributeName])
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{
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var color = [attributes objectForKey:CPForegroundColorAttributeName];
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if (![color isEqual:fgColor])
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{
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headerString += [CPString stringWithFormat:@"\\cf%d", [self numberForColor:color]];
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trailerString += @"\\cf0";
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}
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}
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else if ([currAttrib isEqualToString:CPBackgroundColorAttributeName])
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{
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var color = [attributes objectForKey:CPBackgroundColorAttributeName];
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if (![color isEqual:bgColor])
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{
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headerString += [CPString stringWithFormat:@"\\cb%d", [self numberForColor:color]];
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trailerString += @"\\cb0";
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}
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}
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else if ([currAttrib isEqualToString:CPUnderlineStyleAttributeName])
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{
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headerString += @"\\ul";
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trailerString += @"\\ulnone";
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}
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else if ([currAttrib isEqualToString:CPSuperscriptAttributeName])
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{
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var value = [attributes objectForKey:CPSuperscriptAttributeName],
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svalue = [value intValue] * 6;
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if (svalue > 0)
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{
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headerString += [CPString stringWithFormat:@"\\up%d", svalue];
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trailerString += @"\\up0";
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}
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else if (svalue < 0)
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{
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headerString += [CPString stringWithFormat:@"\\dn-%d", svalue];
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trailerString += @"\\dn0";
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}
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}
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else if ([currAttrib isEqualToString:CPBaselineOffsetAttributeName])
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{
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var value = [attributes objectForKey:CPBaselineOffsetAttributeName],
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svalue = [value floatValue] * 2;
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if (svalue > 0)
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{
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headerString += [CPString stringWithFormat:@"\\up%d", svalue];
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trailerString += @"\\up0";
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}
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else if (svalue < 0)
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{
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headerString += [CPString stringWithFormat:@"\\dn-%d", svalue];
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trailerString += @"\\dn0";
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}
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}
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else if ([currAttrib isEqualToString:CPAttachmentAttributeName])
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{
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}
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else if ([currAttrib isEqualToString:CPLigatureAttributeName])
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{
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}
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else if ([currAttrib isEqualToString:CPKernAttributeName])
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{
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}
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}
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substring = substring.replace(/\\/g, '\\\\');
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substring = substring.replace(/\n/g, '\\par\n');
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substring = substring.replace(/\t/g, '\\tab');
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substring = substring.replace(/{/g, '\\{');
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substring = substring.replace(/}/g, '\\}');
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// FIXME: All characters not in the standard encoding must be
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// replaced by \'xx
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if (!first)
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{
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var braces;
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if ([headerString length])
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braces = [CPString stringWithFormat:@"{%@ %@}", headerString, substring];
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else
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braces = substring;
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result += braces;
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}
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else
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{
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var nobraces;
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if ([headerString length])
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nobraces = [CPString stringWithFormat:@"%@ %@", headerString, substring];
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else
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nobraces = substring;
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result += nobraces;
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}
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return result + trailerString;
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}
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- (CPString)bodyString
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{
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var string = [text string],
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result = "",
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loc = 0,
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length = [string length],
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currRange = CPMakeRange(loc, 0),
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completeRange = CPMakeRange(0, length),
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first = YES;
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// FIXME <!> split along newline characters and run as outer loop
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while (CPMaxRange(currRange) < CPMaxRange(completeRange)) // save all "runs"
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{
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var attributes,
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substring,
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runString;
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attributes = [text attributesAtIndex:CPMaxRange(currRange)
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longestEffectiveRange:currRange
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inRange:completeRange];
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substring = [string substringWithRange:currRange];
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runString = [self runStringForString:substring
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attributes:attributes
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paragraphStart:YES];
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result += runString;
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first = NO;
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}
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return result;
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}
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- (CPString)RTFDStringFromAttributedString:(CPAttributedString)aText
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documentAttributes:(CPDictionary)dict
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{
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var output = [CPString string],
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headerString,
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trailerString,
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bodyString;
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text = aText;
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docDict = dict;
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/*
|
|
* do not change order! (esp. body has to be generated first; builds context)
|
|
*/
|
|
bodyString = [self bodyString];
|
|
trailerString = [self trailerString];
|
|
headerString = [self headerString];
|
|
|
|
output += headerString;
|
|
output += bodyString;
|
|
output += trailerString;
|
|
return output;
|
|
}
|
|
@end |