/* NSText.m The RTFD text class Copyright (C) 1996 Free Software Foundation, Inc. Author: Scott Christley Date: 1996 Author: Felipe A. Rodriguez Date: July 1998 Author: Daniel Bðhringer Date: August 1998 Author: Fred Kiefer Date: March 2000 Reorganised and cleaned up code, added some action methods This file is part of the GNUstep GUI Library. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111 - 1307, USA. */ // toDo: - caret blinking // - formatting routine: broader than 1.5x width cause display problems // - optimization: 1.deletion of single char in paragraph [opti hook 1] // - optimization: 2.newline in first line // - optimization: 3.paragraph made one less line due to delition // of single char [opti hook 1; diff from 1.] #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define HUGE 1e99 enum { NSBackspaceKey = 8, NSCarriageReturnKey = 13, NSDeleteKey = 0x7f, NSBacktabKey = 25 }; static NSCharacterSet *selectionWordGranularitySet; static NSCharacterSet *selectionParagraphGranularitySet; @interface _GNULineLayoutInfo: NSObject { @public NSRange lineRange; NSRect lineRect; float drawingOffset; unsigned type; } typedef enum { // do not use 0 in order to secure calls to nil (calls to nil return 0)! LineLayoutInfoType_Text = 1, LineLayoutInfoType_Paragraph = 2 } _GNULineLayoutInfo_t; + (id) lineLayoutWithRange: (NSRange)aRange rect: (NSRect)aRect drawingOffset: (float)anOffset type: (unsigned)aType; - (NSRange) lineRange; - (NSRect) lineRect; - (float) drawingOffset; - (unsigned) type; - (void) setLineRange: (NSRange)aRange; - (void) setLineRect: (NSRect)aRect; - (void) setDrawingOffset: (float)anOffset; - (void) setType: (unsigned)aType; - (NSString*) description; @end @implementation _GNULineLayoutInfo + (id) lineLayoutWithRange: (NSRange)aRange rect: (NSRect)aRect drawingOffset: (float)anOffset type: (unsigned)aType { id ret = AUTORELEASE([_GNULineLayoutInfo new]); [ret setLineRange: aRange]; [ret setLineRect: aRect]; [ret setDrawingOffset: anOffset]; [ret setType: aType]; return ret; } - (unsigned) type { return type; } - (NSRange) lineRange { return lineRange; } - (NSRect) lineRect { return lineRect; } - (float) drawingOffset { return drawingOffset; } - (void) setLineRange: (NSRange)aRange { lineRange = aRange; } - (void) setLineRect: (NSRect)aRect { //FIXME, line up textEditor with how text in text cell will be placed. // aRect.origin.y += 2; lineRect = aRect; } - (void) setDrawingOffset: (float)anOffset { drawingOffset = anOffset; } - (void) setType: (unsigned)aType { type = aType; } - (NSString*) description { return [[NSDictionary dictionaryWithObjectsAndKeys: NSStringFromRange(lineRange), @"LineRange", NSStringFromRect(lineRect), @"LineRect", nil] description]; } @end static NSRange MakeRangeFromAbs (int a1,int a2) // not the same as NSMakeRange! { if (a1 < 0) a1 = 0; if (a2 < 0) a2 = 0; if (a1 < a2) return NSMakeRange (a1, a2 - a1); else return NSMakeRange (a2, a1 - a2); } // end: _GNULineLayoutInfo------------------------------------------------------ @interface _GNUSeekableArrayEnumerator: NSObject { unsigned currentIndex; NSArray *array; } - (id) initWithArray: (NSArray*)anArray; - (id) nextObject; - (id) previousObject; - (id) currentObject; @end @implementation _GNUSeekableArrayEnumerator - (id) initWithArray: (NSArray*)anArray { self = [super init]; array = RETAIN(anArray); return self; } - (id) nextObject { if (currentIndex >= [array count]) return nil; return [array objectAtIndex: currentIndex++]; } - (id) previousObject { if (currentIndex == 0) return nil; return [array objectAtIndex: --currentIndex]; } - (id) currentObject { return [array objectAtIndex: currentIndex]; } - (void) dealloc { RELEASE(array); [super dealloc]; } @end @interface NSArray(SeekableEnumerator) - (_GNUSeekableArrayEnumerator*) seekableEnumerator; @end @implementation NSArray(SeekableEnumerator) - (_GNUSeekableArrayEnumerator*) seekableEnumerator { return AUTORELEASE([[_GNUSeekableArrayEnumerator alloc] initWithArray: self]); } @end @interface NSText(GNUstepPrivate) /* * these NSLayoutManager- like methods are here only informally (GNU extensions) */ - (unsigned) characterIndexForPoint: (NSPoint)point; - (NSRect) rectForCharacterIndex: (unsigned)index; - (void) _buildUpLayout; - (void) drawRect: (NSRect)rect withSelection: (NSRange)range; // GNU utility methods - (void) _illegalMovement: (int) notNumber; - (BOOL) performPasteOperation: (NSPasteboard*)pboard; /* * various GNU extensions */ + (void) setSelectionWordGranularitySet: (NSCharacterSet*)aSet; + (void) setSelectionParagraphGranularitySet: (NSCharacterSet*)aSet; // // private // - (void) deleteRange: (NSRange)aRange backspace: (BOOL)flag; - (NSDictionary*) defaultTypingAttributes; - (void) setSelectedRangeNoDrawing: (NSRange)range; - (void) drawInsertionPointAtIndex: (unsigned)index color: (NSColor*)color turnedOn: (BOOL)flag; - (void) drawSelectionAsRangeNoCaret: (NSRange)aRange; - (void) drawSelectionAsRange: (NSRange)aRange; - (NSRect) _textBounds; @end @interface GSSimpleLayoutManager: NSObject { // contains private _GNULineLayoutInfo objects NSMutableArray *lineLayoutInformation; NSText *_textHolder; NSTextStorage *_textStorage; } - (id) initForText: (NSText*) aTextHolder; - (void) setTextStorage: (NSTextStorage*) aTextStorage; - (NSSize) _sizeOfRange: (NSRange) range; - (NSRect) _textBounds; - (unsigned) characterIndexForPoint: (NSPoint)point; - (NSRect) rectForCharacterIndex: (unsigned) index; - (NSRange) characterRangeForBoundingRect: (NSRect)bounds; - (NSRange) lineRangeForRect: (NSRect) aRect; // return value is identical to the real line number // (plus counted newline characters) - (int) lineLayoutIndexForCharacterIndex: (unsigned) anIndex; // returns the full character range for a line range - (NSRange) characterRangeForLineLayoutRange: (NSRange) aRange; - (void) setNeedsDisplayForLineRange: (NSRange) redrawLineRange; - (void)textStorage:(NSTextStorage *)aTextStorage edited:(unsigned int)mask range:(NSRange)range changeInLength:(int)lengthChange invalidatedRange:(NSRange)invalidatedCharRange; - (int) rebuildLineLayoutInformation; // override for special layout of text - (int) rebuildLineLayoutInformationStartingAtLine: (int)aLine delta: (int)insertionDelta actualLine: (int)insertionLine; // low level, override but never invoke (use setNeedsDisplayForLineRange:) - (void) drawLinesInLineRange: (NSRange)aRange; - (NSRange) drawRectCharacters: (NSRect)rect; @end @implementation GSSimpleLayoutManager - (id) initForText: (NSText*)aTextHolder { _textHolder = aTextHolder; return self; } - (void) setTextStorage: (NSTextStorage*)aTextStorage { ASSIGN(_textStorage, aTextStorage); [self rebuildLineLayoutInformation]; } - (NSSize) _sizeOfRange: (NSRange)aRange { if (!aRange.length || _textStorage == nil || NSMaxRange(aRange) > [_textStorage length]) return NSZeroSize; return [[_textStorage attributedSubstringFromRange: aRange] size]; } // Returns the currently used bounds for all the text - (NSRect) _textBounds { if ([lineLayoutInformation count]) { NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; NSRect retRect = NSMakeRect (0, 0, 0, 0); for ((lineEnum = [lineLayoutInformation objectEnumerator]); (currentInfo = [lineEnum nextObject]);) { retRect = NSUnionRect (retRect, [currentInfo lineRect]); } return retRect; } else return NSZeroRect; } - (int) lineLayoutIndexForCharacterIndex: (unsigned)anIndex { NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; if ([lineLayoutInformation count] && anIndex >= NSMaxRange ([[lineLayoutInformation lastObject] lineRange])) return [lineLayoutInformation count] - 1; // should use a faster search here for ((lineEnum = [lineLayoutInformation objectEnumerator]); (currentInfo = [lineEnum nextObject]);) { NSRange lineRange = [currentInfo lineRange]; if (lineRange.location<= anIndex && (anIndex <= NSMaxRange (lineRange) - ([currentInfo type] == LineLayoutInfoType_Paragraph? 1: 0))) return [lineLayoutInformation indexOfObject: currentInfo]; } return 0; } - (NSRange) characterRangeForLineLayoutRange: (NSRange)aRange; { _GNULineLayoutInfo *currentInfo; unsigned startLine = aRange.location; unsigned endLine = NSMaxRange(aRange); unsigned startIndex; unsigned endIndex; if (startLine >= [lineLayoutInformation count]) currentInfo = [lineLayoutInformation lastObject]; else currentInfo = [lineLayoutInformation objectAtIndex: startLine]; startIndex = [currentInfo lineRange].location; if (endLine >= [lineLayoutInformation count]) currentInfo = [lineLayoutInformation lastObject]; else currentInfo = [lineLayoutInformation objectAtIndex: endLine]; endIndex = NSMaxRange([currentInfo lineRange]); return MakeRangeFromAbs(startIndex, endIndex); } - (NSRange) characterRangeForBoundingRect: (NSRect)boundsRect { NSRange lineRange = [self lineRangeForRect: boundsRect]; if (lineRange.length) return [self characterRangeForLineLayoutRange: lineRange]; else return NSMakeRange (0, 0); } - (unsigned) characterIndexForPoint: (NSPoint)point { int i; NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; if (point.y >= NSMaxY([[lineLayoutInformation lastObject] lineRect])) return [_textStorage length]; point.x = MAX(0,point.x); point.y = MAX(0,point.y); for (i = 0, (lineEnum = [lineLayoutInformation objectEnumerator]); (currentInfo = [lineEnum nextObject]); i++) // this loop holds some optimization potential (linear search) { NSRect rect = [currentInfo lineRect]; if (NSMaxY(rect)>= point.y && rect.origin.y= NSMaxX(rect)) return NSMaxRange ([currentInfo lineRange]); if (NSPointInRect (point, rect)) { int retPos = 0; NSRange range = [currentInfo lineRange]; for (retPos = range.location; retPos<= NSMaxRange(range); retPos++) // this loop holds some optimization potential (linear search) { if ([self _sizeOfRange: NSMakeRange (range.location, retPos - range.location)].width >= point.x) return MAX (0, retPos - 1); } return range.location; } } return 0; } // rect to the end of line - (NSRect) rectForCharacterIndex: (unsigned)index { int i; float maxWidth = [_textHolder frame].size.width; NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; if (![lineLayoutInformation count]) { return NSMakeRect (0, 0, maxWidth, [self _sizeOfRange: NSMakeRange(0,1)].height); } if (index >= NSMaxRange([[lineLayoutInformation lastObject] lineRange])) { NSRect rect = [[lineLayoutInformation lastObject] lineRect]; if (NSMaxX (rect) >= maxWidth) { return NSMakeRect (0, NSMaxY(rect), maxWidth, rect.size.height); } return NSMakeRect (NSMaxX (rect), rect.origin.y, maxWidth - NSMaxX (rect), rect.size.height); } for (i = 0, (lineEnum = [lineLayoutInformation objectEnumerator]); (currentInfo = [lineEnum nextObject]); i++) { NSRange range = [currentInfo lineRange]; if (NSLocationInRange (index, range)) { NSRect rect = [currentInfo lineRect]; NSSize stringSize = [self _sizeOfRange: MakeRangeFromAbs (range.location, index)]; float x = rect.origin.x + stringSize.width; return NSMakeRect (x, rect.origin.y, NSMaxX (rect) - x, rect.size.height); } } return NSZeroRect; } - (unsigned) lineLayoutIndexForPoint: (NSPoint)point { int i; NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; if (point.y >= NSMaxY ([[lineLayoutInformation lastObject] lineRect])) return [lineLayoutInformation count] - 1; point.x = MAX (0, point.x); point.y = MAX (0, point.y); for (i = 0, (lineEnum = [lineLayoutInformation objectEnumerator]); (currentInfo = [lineEnum nextObject]); i++) { NSRect rect = [currentInfo lineRect]; if (NSMaxY(rect) > point.y && rect.origin.y <= point.y && rect.origin.x < point.x && point.x >= NSMaxX (rect)) return [lineLayoutInformation indexOfObject: currentInfo]; if (NSPointInRect (point, rect)) { // this loop holds some optimization potential (linear search) int retPos = 0; NSRange range = [currentInfo lineRange]; // this loop holds some optimization potential (linear search) for (retPos = range.location; retPos<= NSMaxRange (range); retPos++) { if ([self _sizeOfRange: NSMakeRange (range.location, retPos - range.location)].width >= point.x) return [lineLayoutInformation indexOfObject: currentInfo]; } return [lineLayoutInformation indexOfObject: currentInfo]; } } return 0; } - (void) setNeedsDisplayForLineRange: (NSRange)redrawLineRange { NSRect myFrame = [_textHolder frame]; float maxWidth = myFrame.size.width; if ([lineLayoutInformation count] && redrawLineRange.location < [lineLayoutInformation count] && redrawLineRange.length) { _GNULineLayoutInfo *firstInfo = [lineLayoutInformation objectAtIndex: redrawLineRange.location]; NSRect displayRect, firstRect = [firstInfo lineRect]; if ([firstInfo type] == LineLayoutInfoType_Paragraph && firstRect.origin.x >0 && redrawLineRange.location) { redrawLineRange.location--; redrawLineRange.length++; } displayRect = NSUnionRect ([[lineLayoutInformation objectAtIndex: redrawLineRange.location] lineRect], [[lineLayoutInformation objectAtIndex: MAX (0, (int)NSMaxRange (redrawLineRange) - 1)] lineRect]); displayRect.size.width = maxWidth - displayRect.origin.x; [_textHolder setNeedsDisplayInRect: displayRect]; } // clean up the remaining area below the text { float lowestY = 0; if ([lineLayoutInformation count]) lowestY = NSMaxY ([[lineLayoutInformation lastObject] lineRect]); if (![lineLayoutInformation count] || (lowestY < NSMaxY(myFrame))) { [_textHolder setNeedsDisplayInRect: NSMakeRect(0, lowestY, myFrame.size.width, NSMaxY (myFrame) - lowestY)]; } } } - (void)textStorage:(NSTextStorage *)aTextStorage edited:(unsigned int)mask range:(NSRange)aRange changeInLength:(int)delta invalidatedRange:(NSRange)invalidatedCharRange; { int start = [self lineLayoutIndexForCharacterIndex: aRange.location]; int count; int origLineIndex = MAX(0, start - 1); count = [self rebuildLineLayoutInformationStartingAtLine: origLineIndex delta: delta actualLine: start]; [self setNeedsDisplayForLineRange: NSMakeRange(origLineIndex, MAX(1, count))]; } // internal method range is currently not passed as absolute - (void) addNewlines: (NSRange)aRange intoLayoutArray: (NSMutableArray*)anArray atPoint: (NSPoint*)aPointP width: (float)width characterIndex: (unsigned)startingLineCharIndex ghostEnumerator: (_GNUSeekableArrayEnumerator*)prevArrayEnum didShift: (BOOL*)didShift verticalDisplacement: (float*)verticalDisplacement { NSSize advanceSize = [self _sizeOfRange: NSMakeRange (startingLineCharIndex, 1)]; int count = aRange.length,charIndex; _GNULineLayoutInfo *thisInfo,*ghostInfo = nil; (*didShift) = NO; for (charIndex = aRange.location; --count >= 0; charIndex++) { NSRect currentLineRect; currentLineRect = NSMakeRect (aPointP ->x, aPointP ->y, width - aPointP ->x, advanceSize.height); [anArray addObject: thisInfo = [_GNULineLayoutInfo lineLayoutWithRange: NSMakeRange (startingLineCharIndex, 1) rect: currentLineRect drawingOffset: 0 type: LineLayoutInfoType_Paragraph]]; startingLineCharIndex++; aPointP ->x = 0; aPointP ->y += advanceSize.height; if (prevArrayEnum && !(ghostInfo = [prevArrayEnum nextObject])) prevArrayEnum = nil; if (ghostInfo && ([thisInfo type] != [ghostInfo type])) { _GNULineLayoutInfo *prevInfo = [prevArrayEnum previousObject]; prevArrayEnum = nil; (*didShift) = YES; (*verticalDisplacement) += aPointP ->y - [prevInfo lineRect].origin.y; } } } // private helper function static unsigned _relocLayoutArray (NSMutableArray *lineLayoutInformation, NSArray *ghostArray, int aLine, int relocOffset, int rebuildLineDrift, float yReloc) { // lines actually updated (optimized drawing) unsigned ret = [lineLayoutInformation count] - aLine; NSArray *relocArray = [ghostArray subarrayWithRange: MakeRangeFromAbs (MAX (0, ret + rebuildLineDrift), [ghostArray count])]; NSEnumerator *relocEnum; _GNULineLayoutInfo *currReloc; if (![relocArray count]) return ret; for ((relocEnum = [relocArray objectEnumerator]); (currReloc = [relocEnum nextObject]);) { NSRange range = [currReloc lineRange]; [currReloc setLineRange: NSMakeRange (range.location + relocOffset, range.length)]; if (yReloc) { NSRect rect = [currReloc lineRect]; [currReloc setLineRect: NSMakeRect (rect.origin.x, rect.origin.y + yReloc, rect.size.width, rect.size.height)]; } } [lineLayoutInformation addObjectsFromArray: relocArray]; return ret; } /* * A little utility function to determine the range of characters in a scanner * that are present in a specified character set. */ static inline NSRange scanRange(NSScanner *scanner, NSCharacterSet* aSet) { unsigned start = [scanner scanLocation]; unsigned end = start; if ([scanner scanCharactersFromSet: aSet intoString: 0] == YES) { end = [scanner scanLocation]; } return NSMakeRange(start, end - start); } // begin: central line formatting method--------------------------------------- // returns count of lines actually updated // detachNewThreadSelector: selector toTarget: target withObject: argument; - (int) rebuildLineLayoutInformationStartingAtLine: (int)aLine delta: (int)insertionDelta actualLine: (int)insertionLineIndex { NSPoint drawingPoint = NSZeroPoint; NSScanner *pScanner; float width = [_textHolder frame].size.width; unsigned startingIndex = 0; unsigned currentLineIndex; NSArray *ghostArray; // for optimization detection _GNUSeekableArrayEnumerator *prevArrayEnum; NSCharacterSet *invSelectionWordGranularitySet = [selectionWordGranularitySet invertedSet]; NSCharacterSet *invSelectionParagraphGranularitySet = [selectionParagraphGranularitySet invertedSet]; NSString *parsedString; BOOL isHorizontallyResizable = [_textHolder isHorizontallyResizable]; int lineDriftOffset = 0, rebuildLineDrift = 0; BOOL frameshiftCorrection = NO, nlDidShift = NO, enforceOpti = NO; float yDisplacement = 0; // sanity check that it is possible to do the layout if (width == 0.0) { NSLog(@"NSText formatting with empty frame"); return 0; } if (!lineLayoutInformation) { lineLayoutInformation = [[NSMutableArray alloc] init]; aLine = 0; ghostArray = nil; prevArrayEnum = nil; } else { // remember old array for optimization purposes ghostArray = [lineLayoutInformation subarrayWithRange: NSMakeRange (aLine, [lineLayoutInformation count] - aLine)]; // every time an object is added to lineLayoutInformation // a nextObject has to be performed on prevArrayEnum! prevArrayEnum = [ghostArray seekableEnumerator]; if (aLine) { _GNULineLayoutInfo *lastValidLineInfo; lastValidLineInfo = [lineLayoutInformation objectAtIndex: aLine - 1]; drawingPoint = [lastValidLineInfo lineRect].origin; drawingPoint.y += [lastValidLineInfo lineRect].size.height; startingIndex = NSMaxRange([lastValidLineInfo lineRange]); if ([lastValidLineInfo type] == LineLayoutInfoType_Paragraph) { drawingPoint.x = 0; } // keep paragraph - terminating space on same line as paragraph if ((((int)[lineLayoutInformation count]) - 1) >= aLine) { _GNULineLayoutInfo *anchorLine = [lineLayoutInformation objectAtIndex: aLine]; NSRect anchorRect = [anchorLine lineRect]; if (anchorRect.origin.x > drawingPoint.x && [lastValidLineInfo lineRect].origin.y == anchorRect.origin.y) { drawingPoint = anchorRect.origin; } } } [lineLayoutInformation removeObjectsInRange: NSMakeRange (aLine, [lineLayoutInformation count] - aLine)]; } currentLineIndex = aLine; // each paragraph parsedString = [[_textStorage string] substringFromIndex: startingIndex]; pScanner = [NSScanner scannerWithString: parsedString]; [pScanner setCharactersToBeSkipped: nil]; while ([pScanner isAtEnd] == NO) { NSScanner *lScanner; NSString *paragraph; NSRange paragraphRange, leadingNlRange, trailingNlRange; unsigned currentLoc = [pScanner scanLocation]; unsigned startingParagraphIndex = currentLoc + startingIndex; unsigned startingLineCharIndex = startingParagraphIndex; BOOL isBuckled = NO, inBuckling = NO; leadingNlRange = scanRange(pScanner, selectionParagraphGranularitySet); paragraphRange = scanRange(pScanner, invSelectionParagraphGranularitySet); trailingNlRange = scanRange(pScanner, selectionParagraphGranularitySet); if (leadingNlRange.length > 0) { [self addNewlines: leadingNlRange intoLayoutArray: lineLayoutInformation atPoint: &drawingPoint width: width characterIndex: startingLineCharIndex ghostEnumerator: prevArrayEnum didShift: &nlDidShift verticalDisplacement: &yDisplacement]; if (nlDidShift) { if (insertionDelta == 1) { frameshiftCorrection = YES; rebuildLineDrift--; } else if (insertionDelta == - 1) { frameshiftCorrection = YES; rebuildLineDrift++; } else nlDidShift = NO; } startingLineCharIndex += leadingNlRange.length; currentLineIndex += leadingNlRange.length; } // each line paragraph = [parsedString substringWithRange: paragraphRange]; lScanner = [NSScanner scannerWithString: paragraph]; [lScanner setCharactersToBeSkipped: nil]; while ([lScanner isAtEnd] == NO) { NSRect currentLineRect = NSMakeRect (0, drawingPoint.y, 0, 0); // starts with zero, do not confuse with startingLineCharIndex unsigned localLineStartIndex = [lScanner scanLocation]; NSSize advanceSize = NSZeroSize; // scan the individual words to the end of the line for (; ![lScanner isAtEnd]; drawingPoint.x += advanceSize.width) { NSRange currentStringRange, trailingSpacesRange; NSRange leadingSpacesRange; unsigned scannerPosition = [lScanner scanLocation]; // snack next word // leading spaces: only first time leadingSpacesRange = scanRange(lScanner, selectionWordGranularitySet); currentStringRange = scanRange(lScanner, invSelectionWordGranularitySet); trailingSpacesRange = scanRange(lScanner, selectionWordGranularitySet); if (leadingSpacesRange.length) currentStringRange = NSUnionRange(leadingSpacesRange, currentStringRange); if (trailingSpacesRange.length) currentStringRange = NSUnionRange(trailingSpacesRange, currentStringRange); // evaluate size of current word and line so far advanceSize = [self _sizeOfRange: NSMakeRange (currentStringRange.location + paragraphRange.location + startingIndex, currentStringRange.length)]; currentLineRect = NSUnionRect (currentLineRect, NSMakeRect (drawingPoint.x, drawingPoint.y, advanceSize.width, advanceSize.height)); // handle case where single word is broader than width // (buckle word) unfinished and untested // for richText (absolute position see above) if (!isHorizontallyResizable && advanceSize.width >= width) { if (isBuckled) { NSSize currentSize = NSMakeSize (HUGE, 0); unsigned lastVisibleCharIndex; for (lastVisibleCharIndex = startingLineCharIndex + currentStringRange.length; currentSize.width>= width && lastVisibleCharIndex> startingLineCharIndex; lastVisibleCharIndex--) { currentSize = [self _sizeOfRange: MakeRangeFromAbs (startingLineCharIndex, lastVisibleCharIndex)]; } isBuckled = NO; inBuckling = YES; scannerPosition = localLineStartIndex + (lastVisibleCharIndex - startingLineCharIndex); currentLineRect.size.width = advanceSize.width = width; } else { // undo layout of extralarge word // (will be done the next line [see above]) isBuckled = YES; currentLineRect.size.width -= advanceSize.width; } } // end of line -> word wrap // >= : wichtig för abknicken (isBuckled) if (!isHorizontallyResizable && (currentLineRect.size.width >= width || isBuckled)) { _GNULineLayoutInfo *ghostInfo = nil, *thisInfo; // undo layout of last word [lScanner setScanLocation: scannerPosition]; currentLineRect.origin.x = 0; currentLineRect.origin.y = drawingPoint.y; drawingPoint.y += currentLineRect.size.height; drawingPoint.x = 0; [lineLayoutInformation addObject: (thisInfo = [_GNULineLayoutInfo lineLayoutWithRange: NSMakeRange (startingLineCharIndex, scannerPosition - localLineStartIndex) rect: currentLineRect drawingOffset: 0 type: LineLayoutInfoType_Text])]; currentLineIndex++; startingLineCharIndex = NSMaxRange([thisInfo lineRange]); if (prevArrayEnum && !(ghostInfo = [prevArrayEnum nextObject])) prevArrayEnum = nil; // optimization stuff // (do relayout only as much lines as necessary // and patch the rest)--------- if (ghostInfo) { if ([ghostInfo type] != [thisInfo type]) { // frameshift correction frameshiftCorrection = YES; if (insertionDelta == - 1) { // deletition of newline _GNULineLayoutInfo *nextObject; if (!(nextObject = [prevArrayEnum nextObject])) prevArrayEnum = nil; else { if (nlDidShift && frameshiftCorrection) { // frameshiftCorrection = NO; #if 0 NSLog(@"opti hook 1 (preferred)"); #endif } else { lineDriftOffset += ([thisInfo lineRange].length - [ghostInfo lineRange].length - [nextObject lineRange].length); yDisplacement += [thisInfo lineRect].origin.y - [nextObject lineRect].origin.y; rebuildLineDrift++; } } } } else lineDriftOffset += ([thisInfo lineRange].length - [ghostInfo lineRange].length); // is it possible to simply patch layout changes // into layout array instead of doing a time // consuming re - layout of the whole doc? if ((currentLineIndex - 1 > insertionLineIndex && !inBuckling && !isBuckled) && (!(lineDriftOffset - insertionDelta) || (nlDidShift && !lineDriftOffset) || enforceOpti)) { unsigned erg = _relocLayoutArray (lineLayoutInformation, ghostArray, aLine, insertionDelta, rebuildLineDrift, yDisplacement); // y displacement: redisplay all remaining lines if (frameshiftCorrection) erg = [lineLayoutInformation count] - aLine; else if (currentLineIndex - 1 == insertionLineIndex && ABS(insertionDelta) == 1) { // return 2: redisplay only this and previous line erg = 2; } #if 0 NSLog(@"opti for: %d",erg); #endif return erg; } } // end: optimization stuff-------------------------- // ----------------------------------------------- break; // newline - induced premature lineending: flush } else if ([lScanner isAtEnd]) { _GNULineLayoutInfo *thisInfo; scannerPosition = [lScanner scanLocation]; [lineLayoutInformation addObject: (thisInfo = [_GNULineLayoutInfo lineLayoutWithRange: NSMakeRange (startingLineCharIndex, scannerPosition - localLineStartIndex) rect: currentLineRect drawingOffset: 0 type: LineLayoutInfoType_Text])]; currentLineIndex++; startingLineCharIndex = NSMaxRange ([thisInfo lineRange]); // check for optimization (lines after paragraph // are unchanged and do not need redisplay/relayout)------ if (prevArrayEnum) { _GNULineLayoutInfo *ghostInfo = nil; ghostInfo = [prevArrayEnum nextObject]; if (ghostInfo) { if ([ghostInfo type] != [thisInfo type]) { // frameshift correction for inserted newline frameshiftCorrection = YES; if (insertionDelta == 1) { [prevArrayEnum previousObject]; lineDriftOffset += ([thisInfo lineRange].length - [ghostInfo lineRange].length) + insertionDelta; rebuildLineDrift--; yDisplacement += [thisInfo lineRect].origin.y - [ghostInfo lineRect].origin.y; } else if (insertionDelta == - 1) { if (nlDidShift && frameshiftCorrection) { // frameshiftCorrection = NO; #if 0 NSLog(@"opti hook 2"); #endif } } } else lineDriftOffset += ([thisInfo lineRange].length - [ghostInfo lineRange].length); } else { // new array obviously longer than the previous one prevArrayEnum = nil; } // end: optimization stuff------------------------------ // ------------------------------------------- } } } } // add the trailing newlines of current paragraph if any if (trailingNlRange.length) { [self addNewlines: trailingNlRange intoLayoutArray: lineLayoutInformation atPoint: &drawingPoint width: width characterIndex: startingLineCharIndex ghostEnumerator: prevArrayEnum didShift: &nlDidShift verticalDisplacement: &yDisplacement]; if (nlDidShift) { if (insertionDelta == 1) { frameshiftCorrection = YES; rebuildLineDrift--; } else if (insertionDelta == - 1) { frameshiftCorrection = YES; rebuildLineDrift++; } else nlDidShift = NO; } currentLineIndex += trailingNlRange.length; } } // lines actually updated (optimized drawing) return [lineLayoutInformation count] - aLine; } // end: central line formatting method------------------------------------ - (int) rebuildLineLayoutInformation { // force complete re - layout RELEASE(lineLayoutInformation); lineLayoutInformation = nil; return [self rebuildLineLayoutInformationStartingAtLine: 0 delta: 0 actualLine: 0]; } // relies on lineLayoutInformation - (void) drawLinesInLineRange: (NSRange)aRange; { NSArray *linesToDraw = [lineLayoutInformation subarrayWithRange: aRange]; NSEnumerator *lineEnum; _GNULineLayoutInfo *currentInfo; for ((lineEnum = [linesToDraw objectEnumerator]); (currentInfo = [lineEnum nextObject]);) { if ([currentInfo type] == LineLayoutInfoType_Paragraph) continue; // e.g. for nl [_textStorage drawRange: [currentInfo lineRange] atPoint: [currentInfo lineRect].origin]; // make this use drawRange: inRect: in the future // (for proper adoption of layout information [e.g. centering]) } } // Draws the lines in the given rectangle and hands back the drawn // character range. - (NSRange) drawRectCharacters: (NSRect)rect { NSRange aRange = [self lineRangeForRect: rect]; [self drawLinesInLineRange: aRange]; return [self characterRangeForLineLayoutRange: aRange]; } - (NSRange) lineRangeForRect: (NSRect)rect { NSPoint upperLeftPoint = rect.origin; NSPoint lowerRightPoint = NSMakePoint (NSMaxX (rect), NSMaxY (rect)); unsigned startLine, endLine; startLine = [self lineLayoutIndexForPoint: upperLeftPoint]; endLine = [self lineLayoutIndexForPoint: lowerRightPoint]; if (++endLine > [lineLayoutInformation count]) endLine = [lineLayoutInformation count]; return NSMakeRange(startLine, endLine - startLine); } @end // begin: NSText------------------------------------------------------------ @implementation NSText // // Class methods // + (void)initialize { if (self == [NSText class]) { NSArray *r; NSArray *s; [self setVersion: 1]; // Initial version [self setSelectionWordGranularitySet: [NSCharacterSet whitespaceCharacterSet]]; [self setSelectionParagraphGranularitySet: [NSCharacterSet characterSetWithCharactersInString: [self newlineString]]]; r = [NSArray arrayWithObjects: NSStringPboardType, nil]; s = [NSArray arrayWithObjects: NSStringPboardType, nil]; [[NSApplication sharedApplication] registerServicesMenuSendTypes: s returnTypes: r]; } } // // Instance methods // // // Initialization // - (id) init { return [self initWithFrame: NSMakeRect (0, 0, 100, 100)]; } - (id) initWithFrame: (NSRect)frameRect { [super initWithFrame: frameRect]; [self setMinSize: frameRect.size]; [self setMaxSize: NSMakeSize(HUGE,HUGE)]; _alignment = NSLeftTextAlignment; _tf.is_editable = YES; _tf.is_selectable = YES; _tf.is_rich_text = NO; _tf.uses_font_panel = NO; _tf.is_horizontally_resizable = NO; _tf.is_vertically_resizable = YES; _tf.is_ruler_visible = NO; _tf.is_field_editor = NO; _tf.draws_background = YES; [self setBackgroundColor: [NSColor textBackgroundColor]]; [self setTextColor: [NSColor textColor]]; _default_font = RETAIN([NSFont userFontOfSize: 12]); // sets up the contents object [self setString: @""]; //[self setSelectedRange: NSMakeRange (0, 0)]; return self; } - (void)dealloc { [self unregisterDraggedTypes]; RELEASE(_background_color); RELEASE(_default_font); RELEASE(_text_color); RELEASE(_textStorage); [super dealloc]; } /* * Getting and Setting Contents */ - (void) replaceCharactersInRange: (NSRange)aRange withRTF: (NSData*)rtfData { [self replaceCharactersInRange: aRange withRTFD: rtfData]; } - (void) replaceCharactersInRange: (NSRange)aRange withRTFD: (NSData*)rtfdData { [self replaceRange: aRange withAttributedString: AUTORELEASE([[NSAttributedString alloc] initWithRTFD: rtfdData documentAttributes: NULL])]; } - (void) replaceCharactersInRange: (NSRange)aRange withString: (NSString*)aString { [_textStorage beginEditing]; [_textStorage replaceCharactersInRange: aRange withString: aString]; [_textStorage endEditing]; } - (void) setString: (NSString*)aString { RELEASE(_textStorage); _textStorage = [[NSTextStorage alloc] initWithString: aString attributes: [self defaultTypingAttributes]]; [self _buildUpLayout]; [self sizeToFit]; [self setSelectedRangeNoDrawing: NSMakeRange (0, 0)]; [self setNeedsDisplay: YES]; } - (NSString*) string { return [_textStorage string]; } // old methods - (void) replaceRange: (NSRange)aRange withRTFD: (NSData*)rtfdData { [self replaceCharactersInRange: aRange withRTFD: rtfdData]; } - (void) replaceRange: (NSRange)aRange withRTF: (NSData*)rtfData { [self replaceCharactersInRange: aRange withRTF: rtfData]; } - (void) replaceRange: (NSRange)aRange withString: (NSString*)aString { [self replaceCharactersInRange: aRange withString: aString]; } - (void) setText: (NSString*)aString range: (NSRange)aRange { [self replaceCharactersInRange: aRange withString: aString]; } - (void) setText: (NSString*)string { [self setString: string]; } - (NSString*) text { return [self string]; } // // Graphic attributes // - (NSColor*) backgroundColor { return _background_color; } - (BOOL) drawsBackground { return _tf.draws_background; } - (void) setBackgroundColor: (NSColor*)color { ASSIGN(_background_color, color); } - (void)setDrawsBackground: (BOOL)flag { _tf.draws_background = flag; } // // Managing Global Characteristics // - (BOOL) importsGraphics { return _tf.imports_graphics; } - (BOOL) isEditable { return _tf.is_editable; } - (BOOL) isFieldEditor { return _tf.is_field_editor; } - (BOOL) isRichText { return _tf.is_rich_text; } - (BOOL) isSelectable { return _tf.is_selectable; } - (void)setEditable: (BOOL)flag { _tf.is_editable = flag; // If we are editable then we are selectable if (flag) { _tf.is_selectable = YES; // FIXME: We should show the insertion point } } - (void) setFieldEditor: (BOOL)flag { _tf.is_field_editor = flag; } - (void)setImportsGraphics: (BOOL)flag { _tf.imports_graphics = flag; [self updateDragTypeRegistration]; } - (void) setRichText: (BOOL)flag { _tf.is_rich_text = flag; if (!flag) { [self setString: [self string]]; } [self updateDragTypeRegistration]; } - (void)setSelectable: (BOOL)flag { _tf.is_selectable = flag; // If we are not selectable then we must not be editable if (!flag) _tf.is_editable = NO; } // // Using the font panel // - (BOOL) usesFontPanel { return _tf.uses_font_panel; } - (void)setUsesFontPanel: (BOOL)flag { _tf.uses_font_panel = flag; } // // Managing the Ruler // - (BOOL) isRulerVisible { return NO; } - (void) toggleRuler: (id)sender { } // // Managing the Selection // - (NSRange)selectedRange { return _selected_range; } - (void) setSelectedRange: (NSRange)range { BOOL didLock = NO; if (!_window) return; if ([[self class] focusView] != self) { [self lockFocus]; didLock = YES; } if (_selected_range.length == 0) // remove old cursor { [self drawInsertionPointAtIndex: _selected_range.location color: nil turnedOn: NO]; } else { // This does an unhighlight of the old selected region [self drawSelectionAsRange: _selected_range]; } [self setSelectedRangeNoDrawing: range]; // display if (range.length) { // disable caret timed entry } else // no selection { if ([self isRichText]) { [self setTypingAttributes: [NSMutableDictionary dictionaryWithDictionary: [_textStorage attributesAtIndex: range.location effectiveRange: NULL]]]; } // enable caret timed entry } [self drawSelectionAsRange: range]; [self scrollRangeToVisible: range]; if (didLock) { [self unlockFocus]; } } /* * Copy and paste */ - (void) copy: (id)sender { NSMutableArray *types = [NSMutableArray arrayWithObject: NSStringPboardType]; NSPasteboard *pboard = [NSPasteboard generalPasteboard]; if ([self isRichText]) [types addObject: NSRTFPboardType]; if (_tf.imports_graphics) [types addObject: NSRTFDPboardType]; [pboard declareTypes: types owner: self]; [pboard setString: [[self string] substringWithRange: _selected_range] forType: NSStringPboardType]; if ([self isRichText]) [pboard setData: [self RTFFromRange: _selected_range] forType: NSRTFPboardType]; if (_tf.imports_graphics) [pboard setData: [self RTFDFromRange: _selected_range] forType: NSRTFDPboardType]; } // Copy the current font to the font pasteboard - (void) copyFont: (id)sender { NSMutableArray *types = [NSMutableArray arrayWithObject: NSFontPboardType]; NSPasteboard *pboard = [NSPasteboard pasteboardWithName: NSFontPboard]; // FIXME: We should get the font from the selection NSFont *font = [self font]; NSData *data = nil; if (font != nil) data = [NSArchiver archivedDataWithRootObject: font]; if (data != nil) { [pboard declareTypes: types owner: self]; [pboard setData: data forType: NSFontPboardType]; } } // Copy the current ruler settings to the ruler pasteboard - (void) copyRuler: (id)sender { NSMutableArray *types = [NSMutableArray arrayWithObject: NSRulerPboardType]; NSPasteboard *pboard = [NSPasteboard pasteboardWithName: NSRulerPboard]; NSParagraphStyle *style; NSData * data = nil; if (![self isRichText]) return; style = [_textStorage attribute: NSParagraphStyleAttributeName atIndex: _selected_range.location effectiveRange: &_selected_range]; if (style != nil) data = [NSArchiver archivedDataWithRootObject: style]; if (data != nil) { [pboard declareTypes: types owner: self]; [pboard setData: data forType: NSRulerPboardType]; } } - (void) delete: (id)sender { [self deleteRange: _selected_range backspace: NO]; } - (void) cut: (id)sender { if (_selected_range.length) { [self copy: sender]; [self delete: sender]; } } - (void) paste: (id)sender { [self performPasteOperation: [NSPasteboard generalPasteboard]]; } - (void) pasteFont: (id)sender { [self performPasteOperation: [NSPasteboard pasteboardWithName: NSFontPboard]]; } - (void) pasteRuler: (id)sender { [self performPasteOperation: [NSPasteboard pasteboardWithName: NSRulerPboard]]; } - (void) selectAll: (id)sender { [self setSelectedRange: NSMakeRange(0,[self textLength])]; } /* * Managing Font and Color */ - (NSFont*) font { // FIXME: Should take the font of the first text, if there is some return _default_font; } /* * This action method changes the font of the selection for a rich text object, * or of all text for a plain text object. If the receiver doesn't use the Font * Panel, however, this method does nothing. */ - (void) changeFont: (id)sender { if (_tf.uses_font_panel) { if ([self isRichText]) { NSRange searchRange = _selected_range; NSRange foundRange; int maxSelRange; [_textStorage beginEditing]; for (maxSelRange = NSMaxRange(_selected_range); searchRange.location < maxSelRange; searchRange = NSMakeRange (NSMaxRange (foundRange), maxSelRange - NSMaxRange(foundRange))) { NSFont *font = [_textStorage attribute: NSFontAttributeName atIndex: searchRange.location longestEffectiveRange: &foundRange inRange: searchRange]; if (font) { [self setFont: [sender convertFont: font] ofRange: foundRange]; } } [_textStorage endEditing]; } else { [self setFont: [sender convertFont: _default_font]]; } } } - (void) setFont: (NSFont*)font { NSRange fullRange = NSMakeRange(0, [_textStorage length]); ASSIGN(_default_font, font); [_textStorage beginEditing]; [_textStorage addAttribute: NSFontAttributeName value: font range: fullRange]; [_textStorage endEditing]; } - (void) setFont: (NSFont*)font ofRange: (NSRange)aRange { if ([self isRichText]) { if (font != nil) { [_textStorage beginEditing]; [_textStorage addAttribute: NSFontAttributeName value: font range: aRange]; [_textStorage endEditing]; } } } /* * Managing Alingment */ - (NSTextAlignment) alignment { return _alignment; } - (void) setAlignment: (NSTextAlignment) mode { _alignment = mode; [_textStorage beginEditing]; [_textStorage setAlignment: NSCenterTextAlignment range: NSMakeRange(0, [_textStorage length])]; [_textStorage endEditing]; } - (void) alignCenter: (id) sender { if ([self isRichText]) { [_textStorage beginEditing]; [_textStorage setAlignment: NSCenterTextAlignment range: _selected_range]; [_textStorage endEditing]; } else [self setAlignment: NSCenterTextAlignment]; } - (void) alignLeft: (id) sender { if ([self isRichText]) { [_textStorage beginEditing]; [_textStorage setAlignment: NSLeftTextAlignment range: _selected_range]; [_textStorage endEditing]; } else [self setAlignment: NSLeftTextAlignment]; } - (void) alignRight: (id) sender { if ([self isRichText]) { [_textStorage beginEditing]; [_textStorage setAlignment: NSRightTextAlignment range: _selected_range]; [_textStorage endEditing]; } else [self setAlignment: NSRightTextAlignment]; } /* * Text colour */ - (NSColor*) textColor { return _text_color; } - (void) setTextColor: (NSColor*) color range: (NSRange) aRange { if ([self isRichText]) { [_textStorage beginEditing]; if (color != nil) { [_textStorage addAttribute: NSForegroundColorAttributeName value: color range: aRange]; } else { [_textStorage removeAttribute: NSForegroundColorAttributeName range: aRange]; } [_textStorage endEditing]; } } - (void) setColor: (NSColor*) color ofRange: (NSRange) aRange { [self setTextColor: color range: aRange]; } - (void) setTextColor: (NSColor*) color { NSRange fullRange = NSMakeRange(0, [_textStorage length]); ASSIGN (_text_color, color); [_textStorage beginEditing]; if (color != nil) { [_textStorage addAttribute: NSForegroundColorAttributeName value: color range: fullRange]; } else { [_textStorage removeAttribute: NSForegroundColorAttributeName range: fullRange]; } [_textStorage endEditing]; } // // Text attributes // - (void) subscript: (id)sender { NSRange aRange; if (_tf.is_rich_text) aRange = _selected_range; else aRange = NSMakeRange(0, [_textStorage length]); if (aRange.length) { [_textStorage beginEditing]; [_textStorage subscriptRange: aRange]; [_textStorage endEditing]; } else { // FIXME: Set the typing attributes /* [[self typingAttributes] setObject: [NSNumber numberWithInt: ] forKey: NSSuperScriptAttributeName]; */ } } - (void) superscript: (id)sender { NSRange aRange; if (_tf.is_rich_text) aRange = _selected_range; else aRange = NSMakeRange(0, [_textStorage length]); if (aRange.length) { [_textStorage beginEditing]; [_textStorage superscriptRange: aRange]; [_textStorage endEditing]; } else { // FIXME: Set the typing attributes } } - (void) unscript: (id)sender { NSRange aRange; if (_tf.is_rich_text) aRange = _selected_range; else aRange = NSMakeRange(0, [_textStorage length]); if (aRange.length) { [_textStorage beginEditing]; [_textStorage unscriptRange: aRange]; [_textStorage endEditing]; } else { // FIXME: Set the typing attributes } } - (void) underline: (id)sender { NSRange aRange; BOOL doUnderline = YES; if (_tf.is_rich_text) aRange = _selected_range; else aRange = NSMakeRange(0, [_textStorage length]); if ([[_textStorage attribute: NSUnderlineStyleAttributeName atIndex: aRange.location effectiveRange: NULL] intValue]) doUnderline = NO; if (aRange.length) { [_textStorage beginEditing]; [_textStorage addAttribute: NSUnderlineStyleAttributeName value: [NSNumber numberWithInt: doUnderline] range: aRange]; [_textStorage endEditing]; } else // no redraw necess. [[self typingAttributes] setObject: [NSNumber numberWithInt: doUnderline] forKey: NSUnderlineStyleAttributeName]; } // // Reading and Writing RTFD Files // - (BOOL) readRTFDFromFile: (NSString*)path { NSData *data = [NSData dataWithContentsOfFile: path]; id peek; if (data && (peek = AUTORELEASE([[NSAttributedString alloc] initWithRTF: data documentAttributes: NULL] ))) { if (!_tf.is_rich_text) { // not [self setRichText: YES] for efficiancy reasons _tf.is_rich_text = YES; [self updateDragTypeRegistration]; } [self replaceRange: NSMakeRange (0, [self textLength]) withAttributedString: peek]; return YES; } return NO; } - (BOOL) writeRTFDToFile: (NSString*)path atomically: (BOOL)flag { NSFileWrapper *wrapper = [_textStorage RTFDFileWrapperFromRange: NSMakeRange(0, [_textStorage length]) documentAttributes: nil]; return [wrapper writeToFile: path atomically: flag updateFilenames: YES]; } - (NSData*) RTFDFromRange: (NSRange) aRange { return [_textStorage RTFDFromRange: aRange documentAttributes: nil]; } - (NSData*) RTFFromRange: (NSRange) aRange { return [self RTFDFromRange: aRange]; } // // Sizing the Frame Rectangle // - (BOOL) isHorizontallyResizable { return _tf.is_horizontally_resizable; } - (BOOL) isVerticallyResizable { return _tf.is_vertically_resizable; } - (NSSize) maxSize { return _maxSize; } - (NSSize) minSize { return _minSize; } - (void)setHorizontallyResizable: (BOOL)flag { _tf.is_horizontally_resizable = flag; } - (void)setMaxSize: (NSSize)newMaxSize { _maxSize = newMaxSize; } - (void)setMinSize: (NSSize)newMinSize { _minSize = newMinSize; } - (void) setVerticallyResizable: (BOOL)flag { _tf.is_vertically_resizable = flag; } - (void) sizeToFit { // if we are a field editor we don't have to handle the size. if ([self isFieldEditor]) return; else { NSSize oldSize = _frame.size; float newWidth = oldSize.width; float newHeight = oldSize.height; NSRect textRect = [self _textBounds]; NSSize newSize; if (_tf.is_horizontally_resizable) { newWidth = textRect.size.width; } else if (_tf.is_vertically_resizable) { newHeight = textRect.size.height; } newSize = NSMakeSize(MIN(_maxSize.width, MAX(newWidth, _minSize.width)), MIN(_maxSize.height, MAX(newHeight, _minSize.height))); if (!NSEqualSizes(oldSize, newSize)) { [self setFrameSize: newSize]; } } } // // Spelling // - (void) checkSpelling: (id)sender { NSRange errorRange = [[NSSpellChecker sharedSpellChecker] checkSpellingOfString: [self string] startingAt: NSMaxRange (_selected_range)]; if (errorRange.length) [self setSelectedRange: errorRange]; else NSBeep(); } - (void) showGuessPanel: (id)sender { [[[NSSpellChecker sharedSpellChecker] spellingPanel] orderFront: self]; } // // Scrolling // - (void) scrollRangeToVisible: (NSRange) aRange { [self scrollRectToVisible: NSUnionRect ([self rectForCharacterIndex: _selected_range.location], [self rectForCharacterIndex: NSMaxRange (_selected_range)])]; } /* * Managing the Delegate */ - (id) delegate { return _delegate; } - (void) setDelegate: (id) anObject { NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; if (_delegate) [nc removeObserver: _delegate name: nil object: self]; ASSIGN(_delegate, anObject); #define SET_DELEGATE_NOTIFICATION(notif_name) \ if ([_delegate respondsToSelector: @selector(text##notif_name:)]) \ [nc addObserver: _delegate \ selector: @selector(text##notif_name:) \ name: NSText##notif_name##Notification \ object: self] SET_DELEGATE_NOTIFICATION(DidBeginEditing); SET_DELEGATE_NOTIFICATION(DidChange); SET_DELEGATE_NOTIFICATION(DidEndEditing); } // // Handling Events // - (void) mouseDown: (NSEvent*)theEvent { NSSelectionGranularity granularity = NSSelectByCharacter; NSRange chosenRange, prevChosenRange, proposedRange; NSPoint point, startPoint; NSEvent *currentEvent; unsigned startIndex; BOOL didDragging = NO; // If not selectable then don't recognize the mouse down if (!_tf.is_selectable) return; if (![_window makeFirstResponder: self]) return; switch ([theEvent clickCount]) { case 1: granularity = NSSelectByCharacter; break; case 2: granularity = NSSelectByWord; break; case 3: granularity = NSSelectByParagraph; break; } startPoint = [self convertPoint: [theEvent locationInWindow] fromView: nil]; startIndex = [self characterIndexForPoint: startPoint]; proposedRange = NSMakeRange (startIndex, 0); chosenRange = prevChosenRange = [self selectionRangeForProposedRange: proposedRange granularity: granularity]; [self lockFocus]; // clean up before doing the dragging if (_selected_range.length == 0) // remove old cursor { [self drawInsertionPointAtIndex: _selected_range.location color: nil turnedOn: NO]; } else [self drawSelectionAsRangeNoCaret: _selected_range]; // make this non - blocking (or make use of timed entries) for (currentEvent = [_window nextEventMatchingMask: (NSLeftMouseDraggedMask|NSLeftMouseUpMask)]; [currentEvent type] != NSLeftMouseUp; (currentEvent = [_window nextEventMatchingMask: (NSLeftMouseDraggedMask|NSLeftMouseUpMask)]), prevChosenRange = chosenRange) // run modal loop { BOOL didScroll = [self autoscroll: currentEvent]; point = [self convertPoint: [currentEvent locationInWindow] fromView: nil]; proposedRange = MakeRangeFromAbs ([self characterIndexForPoint: point], startIndex); chosenRange = [self selectionRangeForProposedRange: proposedRange granularity: granularity]; if (NSEqualRanges (prevChosenRange, chosenRange)) { if (!didDragging) { [self drawSelectionAsRangeNoCaret: chosenRange]; [_window flushWindow]; } else continue; } // this changes the selection without needing instance drawing // (carefully thought out ; - ) if (!didScroll) { [self drawSelectionAsRangeNoCaret: MakeRangeFromAbs (MIN (chosenRange.location, prevChosenRange.location), MAX (chosenRange.location, prevChosenRange.location))]; [self drawSelectionAsRangeNoCaret: MakeRangeFromAbs (MIN (NSMaxRange (chosenRange), NSMaxRange (prevChosenRange)), MAX (NSMaxRange (chosenRange), NSMaxRange (prevChosenRange)))]; [_window flushWindow]; } else { [self drawRect: [self visibleRect] withSelection: chosenRange]; [_window flushWindow]; } didDragging = YES; } NSDebugLog(@"chosenRange. location = % d, length = %d\n", (int)chosenRange.location, (int)chosenRange.length); [self setSelectedRangeNoDrawing: chosenRange]; if (!didDragging) [self drawSelectionAsRange: chosenRange]; else if (chosenRange.length == 0) [self drawInsertionPointAtIndex: chosenRange.location color: [NSColor blackColor] turnedOn: YES]; // remember for column stable cursor up/down _currentCursor = [self rectForCharacterIndex: chosenRange.location].origin; [self unlockFocus]; [_window flushWindow]; } - (void) keyDown: (NSEvent*)theEvent { // If not editable, don't recognize the key down if (!_tf.is_editable) { [super keyDown: theEvent]; } else { [self interpretKeyEvents: [NSArray arrayWithObject: theEvent]]; } } - (void) insertNewline: (id) sender { if (_tf.is_field_editor) { [self _illegalMovement: NSReturnTextMovement]; return; } [self insertText: [[self class] newlineString]]; } - (void) insertTab: (id) sender { if (_tf.is_field_editor) { [self _illegalMovement: NSTabTextMovement]; return; } [self insertText: @"\t"]; } - (void) insertBacktab: (id) sender { if (_tf.is_field_editor) { [self _illegalMovement: NSBacktabTextMovement]; return; } //[self insertText: @"\t"]; } - (void) deleteForward: (id) sender { if (_selected_range.location != [self textLength]) { /* Not at the end of text -- delete following character */ [self deleteRange: [self selectionRangeForProposedRange: NSMakeRange (_selected_range.location, 1) granularity: NSSelectByCharacter] backspace: NO]; } else { /* end of text: behave the same way as NSBackspaceKey */ [self deleteBackward: sender]; } } - (void) deleteBackward: (id) sender { [self deleteRange: _selected_range backspace: YES]; } // choose granularity according to keyboard modifier flags - (void) moveUp: (id) sender { unsigned cursorIndex; NSPoint cursorPoint; NSRange oldRange = _selected_range; if (_tf.is_field_editor) { [self _illegalMovement: NSUpTextMovement]; return; } /* Do nothing if we are at beginning of text */ if (_selected_range.location == 0) return; if (_selected_range.length) { _currentCursor = [self rectForCharacterIndex: _selected_range.location].origin; } cursorIndex = _selected_range.location; cursorPoint = [self rectForCharacterIndex: cursorIndex].origin; cursorIndex = [self characterIndexForPoint: NSMakePoint (_currentCursor.x + 0.001, MAX (0, cursorPoint.y - 0.001))]; [self setSelectedRange: [self selectionRangeForProposedRange: NSMakeRange (cursorIndex, 0) granularity: NSSelectByCharacter]]; // FIXME: We redisplay the line the cursor was on. [self setNeedsDisplayInRect: [self rectForCharacterIndex: oldRange.location]]; } - (void) moveDown: (id) sender { unsigned cursorIndex; NSRect cursorRect; NSRange oldRange = _selected_range; if (_tf.is_field_editor) { [self _illegalMovement: NSDownTextMovement]; return; } /* Do nothing if we are at end of text */ if (_selected_range.location == [self textLength]) return; if (_selected_range.length) { _currentCursor = [self rectForCharacterIndex: NSMaxRange (_selected_range)].origin; } cursorIndex = _selected_range.location; cursorRect = [self rectForCharacterIndex: cursorIndex]; cursorIndex = [self characterIndexForPoint: NSMakePoint (_currentCursor.x + 0.001, NSMaxY (cursorRect) + 0.001)]; [self setSelectedRange: [self selectionRangeForProposedRange: NSMakeRange (cursorIndex, 0) granularity: NSSelectByCharacter]]; // FIXME: We redisplay the line the cursor was on [self setNeedsDisplayInRect: [self rectForCharacterIndex: oldRange.location]]; } - (void) moveLeft: (id) sender { /* Do nothing if we are at beginning of text */ if (_selected_range.location == 0) return; [self setSelectedRange: [self selectionRangeForProposedRange: NSMakeRange (_selected_range.location - 1, 0) granularity: NSSelectByCharacter]]; _currentCursor.x = [self rectForCharacterIndex: _selected_range.location].origin.x; // FIXME: We redisplay the line the cursor is on. [self setNeedsDisplayInRect: [self rectForCharacterIndex: _selected_range.location + 1]]; } - (void) moveRight: (id) sender { /* Do nothing if we are at end of text */ if (_selected_range.location == [self textLength]) return; [self setSelectedRange: [self selectionRangeForProposedRange: NSMakeRange (MIN (NSMaxRange (_selected_range) + 1, [self textLength]), 0) granularity: NSSelectByCharacter]]; _currentCursor.x = [self rectForCharacterIndex: _selected_range.location].origin.x; // FIXME: We redisplay the line the cursor is on. [self setNeedsDisplayInRect: [self rectForCharacterIndex: _selected_range.location - 1]]; } - (BOOL) acceptsFirstResponder { if ([self isSelectable]) return YES; else return NO; } - (BOOL) resignFirstResponder { if (([self isEditable]) && ([_delegate respondsToSelector: @selector(textShouldEndEditing:)]) && ([_delegate textShouldEndEditing: self] == NO)) return NO; // Add any clean-up stuff here if ([self shouldDrawInsertionPoint]) { [self drawInsertionPointAtIndex: _selected_range.location color: nil turnedOn: NO]; // stop timed entry } [[NSNotificationCenter defaultCenter] postNotificationName: NSTextDidEndEditingNotification object: self]; return YES; } - (BOOL) becomeFirstResponder { if ([self isSelectable] == NO) return NO; if (([_delegate respondsToSelector: @selector(textShouldBeginEditing:)]) && ([_delegate textShouldBeginEditing: self] == NO)) return NO; // Add any initialization stuff here. //if ([self shouldDrawInsertionPoint]) // { // [self lockFocus]; // [self drawInsertionPointAtIndex: _selected_range.location // color: [NSColor blackColor] turnedOn: YES]; // [self unlockFocus]; // // restart timed entry // } [[NSNotificationCenter defaultCenter] postNotificationName: NSTextDidBeginEditingNotification object: self]; return YES; } - (void) drawRect: (NSRect)rect { [self drawRect: rect withSelection: _selected_range]; } // text lays out from top to bottom - (BOOL) isFlipped { return YES; } - (BOOL) isOpaque { if (_tf.draws_background == NO || _background_color == nil || [_background_color alphaComponent] < 1.0) return NO; else return YES; } /* * Handle enabling/disabling of services menu items. */ - (id) validRequestorForSendType: (NSString*) sendType returnType: (NSString*) returnType { if ((!sendType || [sendType isEqual: NSStringPboardType]) && (!returnType || [returnType isEqual: NSStringPboardType])) { if ((_selected_range.length || !sendType) && ([self isEditable] || !returnType)) { return self; } } return [super validRequestorForSendType: sendType returnType: returnType]; } // // NSCoding protocol // - (void)encodeWithCoder: aCoder { BOOL flag; [super encodeWithCoder: aCoder]; [aCoder encodeConditionalObject: _delegate]; [aCoder encodeObject: _textStorage]; [aCoder encodeValueOfObjCType: "I" at: &_alignment]; flag = _tf.is_editable; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_rich_text; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_selectable; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.imports_graphics; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.uses_font_panel; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_horizontally_resizable; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_vertically_resizable; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_ruler_visible; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; flag = _tf.is_field_editor; [aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag]; [aCoder encodeObject: _background_color]; [aCoder encodeObject: _text_color]; [aCoder encodeObject: _default_font]; [aCoder encodeValueOfObjCType: @encode(NSRange) at: &_selected_range]; } - initWithCoder: aDecoder { BOOL flag; [super initWithCoder: aDecoder]; _delegate = [aDecoder decodeObject]; _textStorage = [aDecoder decodeObject]; [aDecoder decodeValueOfObjCType: "I" at: &_alignment]; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_editable = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_rich_text = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_selectable = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.imports_graphics = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.uses_font_panel = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_horizontally_resizable = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_vertically_resizable = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_ruler_visible = flag; [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag]; _tf.is_field_editor = flag; _background_color = [aDecoder decodeObject]; _text_color = RETAIN([aDecoder decodeObject]); _default_font = RETAIN([aDecoder decodeObject]); [aDecoder decodeValueOfObjCType: @encode(NSRange) at: &_selected_range]; // build up the layout information that dont get stored [self _buildUpLayout]; return self; } // // NSChangeSpelling protocol // - (void) changeSpelling: (id)sender { [self insertText: [[(NSControl*)sender selectedCell] stringValue]]; } // // NSIgnoreMisspelledWords protocol // - (void) ignoreSpelling: (id)sender { [[NSSpellChecker sharedSpellChecker] ignoreWord: [[(NSControl*)sender selectedCell] stringValue] inSpellDocumentWithTag: [self spellCheckerDocumentTag]]; } @end @implementation NSText(GNUstepExtension) + (NSString*) newlineString { return @"\n"; } - (void) replaceRange: (NSRange) aRange withAttributedString: (NSAttributedString*) attrString { [_textStorage beginEditing]; if ([self isRichText]) [_textStorage replaceCharactersInRange: aRange withAttributedString: attrString]; else [_textStorage replaceCharactersInRange: aRange withString: [attrString string]]; [_textStorage endEditing]; } - (unsigned) textLength { return [_textStorage length]; } - (void) sizeToFit: (id)sender { [self sizeToFit]; } - (int) spellCheckerDocumentTag { if (!_spellCheckerDocumentTag) _spellCheckerDocumentTag = [NSSpellChecker uniqueSpellDocumentTag]; return _spellCheckerDocumentTag; } // central text inserting method (takes care // of optimized redraw/ cursor positioning) - (void) insertText: (NSString*) insertString { if ([self isRichText]) { [self replaceRange: _selected_range withAttributedString: AUTORELEASE([[NSAttributedString alloc] initWithString: insertString attributes: [self typingAttributes]])]; } else { [self replaceCharactersInRange: _selected_range withString: insertString]; } // ScrollView interaction [self sizeToFit]; // move cursor [self selectionRangeForProposedRange: ] [self setSelectedRange: NSMakeRange (_selected_range.location + [insertString length], 0)]; // remember x for row - stable cursor movements _currentCursor = [self rectForCharacterIndex: _selected_range.location].origin; // broadcast notification [[NSNotificationCenter defaultCenter] postNotificationName: NSTextDidChangeNotification object: self]; } - (void) setTypingAttributes: (NSDictionary*) dict { if (![dict isKindOfClass: [NSMutableDictionary class]]) { RELEASE(_typingAttributes); _typingAttributes = [[NSMutableDictionary alloc] initWithDictionary: dict]; } else ASSIGN(_typingAttributes, (NSMutableDictionary*)dict); } - (NSMutableDictionary*) typingAttributes { if (_typingAttributes != nil) return _typingAttributes; else return [NSMutableDictionary dictionaryWithDictionary: [self defaultTypingAttributes]]; } - (void) updateFontPanel { // update fontPanel only if told so if (_tf.uses_font_panel) { BOOL isMultiple = NO; NSFont *currentFont = nil; if ([self isRichText]) { NSRange longestRange; currentFont = [_textStorage attribute: NSFontAttributeName atIndex: _selected_range.location longestEffectiveRange: &longestRange inRange: _selected_range]; if (NSEqualRanges (longestRange, _selected_range)) isMultiple = NO; else isMultiple = YES; } else currentFont = _default_font; [[NSFontManager sharedFontManager] setSelectedFont: currentFont isMultiple: isMultiple]; } } - (BOOL) shouldDrawInsertionPoint { return (_selected_range.length == 0) && [self isEditable]; } - (void) drawInsertionPointInRect: (NSRect)rect color: (NSColor*)color turnedOn: (BOOL)flag { BOOL didLock = NO; if (!_window) return; if ([[self class] focusView] != self) { [self lockFocus]; didLock = YES; } if (flag) { [color set]; NSRectFill(rect); } else { [[self backgroundColor] set]; NSRectFill(rect); } if (didLock) { [self unlockFocus]; } } - (NSRange) selectionRangeForProposedRange: (NSRange)proposedCharRange granularity: (NSSelectionGranularity)granularity { NSCharacterSet *set = nil; NSString *string = [self string]; unsigned lastIndex = [string length] - 1; unsigned lpos = MIN(lastIndex, proposedCharRange.location); // better: rpos = MAX(0, (int)NSMaxRange(proposedCharRange) - 1); unsigned rpos = NSMaxRange(proposedCharRange); BOOL rmemberstate, lmemberstate; if (![string length]) { return NSMakeRange(0,0); } switch (granularity) { case NSSelectByCharacter: return NSIntersectionRange (proposedCharRange, NSMakeRange (0, lastIndex + 2)); case NSSelectByWord: set = selectionWordGranularitySet; break; case NSSelectByParagraph: set = selectionParagraphGranularitySet; break; } // now work on set... lmemberstate = [set characterIsMember: [string characterAtIndex: lpos]]; rmemberstate = [set characterIsMember: [string characterAtIndex: MIN (rpos, lastIndex)]]; while (rpos <= lastIndex && ([set characterIsMember: [string characterAtIndex: rpos]] == rmemberstate)) rpos++; while (lpos && ([set characterIsMember: [string characterAtIndex: lpos]] == lmemberstate)) lpos--; if ([set characterIsMember: [string characterAtIndex: lpos]] != lmemberstate && lpos < proposedCharRange.location) lpos++; return MakeRangeFromAbs(lpos,rpos); } - (NSArray*) acceptableDragTypes { NSMutableArray *ret = [NSMutableArray arrayWithObjects: NSStringPboardType, NSColorPboardType, nil]; if ([self isRichText]) [ret addObject: NSRTFPboardType]; if (_tf.imports_graphics) [ret addObject: NSRTFDPboardType]; return ret; } - (void) updateDragTypeRegistration { [self registerForDraggedTypes: [self acceptableDragTypes]]; } @end @implementation NSText(GNUstepPrivate) + (void) setSelectionWordGranularitySet: (NSCharacterSet*) aSet { ASSIGN(selectionWordGranularitySet, aSet); } + (void) setSelectionParagraphGranularitySet: (NSCharacterSet*) aSet { ASSIGN(selectionParagraphGranularitySet, aSet); } - (NSDictionary*) defaultTypingAttributes { return [NSDictionary dictionaryWithObjectsAndKeys: _default_font, NSFontAttributeName, _text_color, NSForegroundColorAttributeName, nil]; } - (void) _illegalMovement: (int) textMovement { // This is similar to [self resignFirstResponder], // with the difference that in the notification we need // to put the NSTextMovement, which resignFirstResponder // does not. Also, if we are ending editing, we are going // to be removed, so it's useless to update any drawing. NSNumber *number; NSDictionary *uiDictionary; if (([self isEditable]) && ([_delegate respondsToSelector: @selector(textShouldEndEditing:)]) && ([_delegate textShouldEndEditing: self] == NO)) return; // Add any clean-up stuff here number = [NSNumber numberWithInt: textMovement]; uiDictionary = [NSDictionary dictionaryWithObject: number forKey: @"NSTextMovement"]; [[NSNotificationCenter defaultCenter] postNotificationName: NSTextDidEndEditingNotification object: self userInfo: uiDictionary]; return; } // begin: dragging of colors and files--------------- - (unsigned int) draggingEntered: (id )sender { return NSDragOperationGeneric; } - (unsigned int) draggingUpdated: (id )sender { return NSDragOperationGeneric; } - (void) draggingExited: (id )sender { } - (BOOL) prepareForDragOperation: (id )sender { return YES; } - (BOOL) performDragOperation: (id )sender { return [self performPasteOperation: [sender draggingPasteboard]]; } - (void) concludeDragOperation: (id )sender { } // end: drag accepting--------------------------------- - (BOOL) writeSelectionToPasteboard: (NSPasteboard*)pb types: (NSArray*)sendTypes { NSArray *types; NSString *string; if ([sendTypes containsObject: NSStringPboardType] == NO) { return NO; } types = [NSArray arrayWithObjects: NSStringPboardType, nil]; [pb declareTypes: types owner: nil]; string = [self string]; string = [string substringWithRange: _selected_range]; return [pb setString: string forType: NSStringPboardType]; } // // handle ruler pasteboard as well! - (BOOL) performPasteOperation: (NSPasteboard*)pboard { // color accepting if ([pboard availableTypeFromArray: [NSArray arrayWithObject: NSColorPboardType]]) { NSColor *color = [NSColor colorFromPasteboard: pboard]; if ([self isRichText]) { [self setTextColor: color range: _selected_range]; } else [self setTextColor: color]; return YES; } // font pasting if ([pboard availableTypeFromArray: [NSArray arrayWithObject: NSFontPboardType]]) { NSData *data = [pboard dataForType: NSFontPboardType]; if (data != nil) { NSFont *font = [NSUnarchiver unarchiveObjectWithData: data]; if (font != nil) { if ([self isRichText]) { if (_selected_range.length) [self setFont: font ofRange: _selected_range]; else [[self typingAttributes] setObject: font forKey: NSFontAttributeName]; } else [self setFont: font]; return YES; } } //return NO; } if (_tf.imports_graphics) { NSArray *types = [NSArray arrayWithObjects: NSFileContentsPboardType, NSRTFDPboardType, NSRTFPboardType, NSStringPboardType, NSTIFFPboardType, nil]; if ([[pboard availableTypeFromArray: types] isEqualToString: NSRTFDPboardType]) { [self replaceRange: _selected_range withAttributedString: AUTORELEASE([[NSAttributedString alloc] initWithRTFD: [pboard dataForType: NSRTFDPboardType] documentAttributes: NULL])]; return YES; } else if ([[pboard availableTypeFromArray: types] isEqualToString: NSRTFPboardType]) { [self replaceRange: _selected_range withAttributedString: AUTORELEASE([[NSAttributedString alloc] initWithRTF: [pboard dataForType: NSRTFPboardType] documentAttributes: NULL])]; return YES; } else if ([[pboard availableTypeFromArray: types] isEqualToString: NSStringPboardType]) { [self insertText: [pboard stringForType: NSStringPboardType]]; return YES; } } else if ([self isRichText]) { NSArray *types = [NSArray arrayWithObjects: NSRTFPboardType, NSStringPboardType, nil]; if ([[pboard availableTypeFromArray: types] isEqualToString: NSRTFPboardType]) { [self replaceRange: _selected_range withAttributedString: AUTORELEASE([[NSAttributedString alloc] initWithRTF: [pboard dataForType: NSRTFPboardType] documentAttributes: NULL])]; return YES; } else if ([[pboard availableTypeFromArray: types] isEqualToString: NSStringPboardType]) { [self insertText: [pboard stringForType: NSStringPboardType]]; return YES; } } else // plain text { NSArray *types = [NSArray arrayWithObjects: NSStringPboardType, nil]; if ([[pboard availableTypeFromArray: types] isEqualToString: NSStringPboardType]) { [self insertText: [pboard stringForType: NSStringPboardType]]; return YES; } } return NO; } - (BOOL) readSelectionFromPasteboard: (NSPasteboard*)pb { return [self performPasteOperation: pb]; } // central text deletion/backspace method // (takes care of optimized redraw/ cursor positioning) - (void) deleteRange: (NSRange) aRange backspace: (BOOL) flag { NSRange deleteRange; if (!aRange.length && !flag) return; if (!aRange.location && ! aRange.length) return; if (aRange.length) { deleteRange = aRange; } else { deleteRange = NSMakeRange (MAX (0, aRange.location - 1), 1); } [_textStorage beginEditing]; [_textStorage deleteCharactersInRange: deleteRange]; [_textStorage endEditing]; // ScrollView interaction [self sizeToFit]; // move cursor [self selectionRangeForProposedRange: ] [self setSelectedRange: NSMakeRange (deleteRange.location, 0)]; // remember x for row - stable cursor movements _currentCursor = [self rectForCharacterIndex: _selected_range.location].origin; // broadcast notification [[NSNotificationCenter defaultCenter] postNotificationName: NSTextDidChangeNotification object: self]; } - (unsigned) characterIndexForPoint: (NSPoint) point { return [_layoutManager characterIndexForPoint: point]; } - (NSRect) rectForCharacterIndex: (unsigned) index { return [_layoutManager rectForCharacterIndex: index]; } - (void) _buildUpLayout { if (_layoutManager == nil) _layoutManager = [[GSSimpleLayoutManager alloc] initForText: self]; [_textStorage addLayoutManager: _layoutManager]; } // Returns the currently used bounds for all the text - (NSRect) _textBounds { return [_layoutManager _textBounds]; } - (void) drawRect: (NSRect) rect withSelection: (NSRange) selectedCharacterRange { NSRange drawnRange; NSRange newRange; if (_tf.draws_background) { // clear area under text [[self backgroundColor] set]; NSRectFill(rect); } drawnRange = [_layoutManager drawRectCharacters: rect]; // We have to redraw the part of the selection that is inside // the redrawn lines newRange = NSIntersectionRange(selectedCharacterRange, drawnRange); // Was there any overlapping with the selection? if ((selectedCharacterRange.length && NSLocationInRange(newRange.location, selectedCharacterRange)) || (selectedCharacterRange.location == newRange.location)) [self drawSelectionAsRange: newRange]; } - (void) drawInsertionPointAtIndex: (unsigned) index color: (NSColor*) color turnedOn: (BOOL) flag { NSRect drawRect = [self rectForCharacterIndex: index]; drawRect.size.width = 1; if (drawRect.size.height == 0) drawRect.size.height = 12; if (flag && color == nil) color = [NSColor blackColor]; [self drawInsertionPointInRect: drawRect color: color turnedOn: flag]; } - (void) drawSelectionAsRangeNoCaret: (NSRange) aRange { if (aRange.length) { NSRect startRect = [self rectForCharacterIndex: aRange.location]; NSRect endRect = [self rectForCharacterIndex: NSMaxRange (aRange)]; float maxWidth = _frame.size.width; if (startRect.origin.y == endRect.origin.y) { // single line selection NSHighlightRect (NSMakeRect (startRect.origin.x, startRect.origin.y, endRect.origin.x - startRect.origin.x, startRect.size.height)); } else if (startRect.origin.y == endRect.origin.y - endRect.size.height) { // two line selection // first line NSHighlightRect (NSMakeRect (startRect.origin.x, startRect.origin.y, maxWidth - startRect.origin.x, startRect.size.height)); // second line NSHighlightRect (NSMakeRect (0, endRect.origin.y, endRect.origin.x, endRect.size.height)); } else { // 3 Rects: multiline selection // first line NSHighlightRect (NSMakeRect (startRect.origin.x, startRect.origin.y, maxWidth - startRect.origin.x, startRect.size.height)); // intermediate lines NSHighlightRect (NSMakeRect (0, NSMaxY(startRect), maxWidth, endRect.origin.y - NSMaxY (startRect))); // last line NSHighlightRect (NSMakeRect (0, endRect.origin.y, endRect.origin.x, endRect.size.height)); } } } - (void) drawSelectionAsRange: (NSRange) aRange { if (aRange.length) { [self drawSelectionAsRangeNoCaret: aRange]; } else { [self drawInsertionPointAtIndex: aRange.location color: [NSColor blackColor] turnedOn: YES]; } } // low level selection setting including delegation - (void) setSelectedRangeNoDrawing: (NSRange)range { // ask delegate for selection validation _selected_range = range; [self updateFontPanel]; #if 0 [[NSNotificationCenter defaultCenter] postNotificationName: NSTextViewDidChangeSelectionNotification object: self userInfo: [NSDictionary dictionaryWithObjectsAndKeys: NSStringFromRange (_selected_range), NSOldSelectedCharacterRange, nil]]; #endif } @end