ITMultilineTextFieldCell.m

   1 #import "ITMultilineTextFieldCell.h"
   2
   3 @implementation ITMultilineTextFieldCell
   4
   5 - (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
   6         if ([(id)[self objectValue] isKindOfClass:[NSArray class]]) {
   7
   8                 /*
   9                         Okay, here's the different possibilities for the objectValue of this cell, and how they're displayed:
  10
  11                                 NSArray of NSStrings - Draw first line with System Font, following lines with Small System Font
  12                                 NSArray of NSAttributedStrings - Draw as given
  13                                 NSArray of both - Draw each line as above!
  14
  15                         The number of lines is determined by the contents of the array...
  16                 */
  17
  18                 NSColor *defaultColor;
  19                 NSMutableParagraphStyle *paragraphStyle = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease];
  20                 [paragraphStyle setLineBreakMode:NSLineBreakByTruncatingTail];
  21                 NSPoint cellPoint = cellFrame.origin;
  22                 NSSize cellSize = cellFrame.size;
  23
  24                 NSRect secondaryLineRect;
  25
  26                 if ([self isHighlighted] && ([self highlightColorWithFrame:cellFrame inView:controlView]!=[NSColor secondarySelectedControlColor])) {
  27                         defaultColor = [NSColor whiteColor];
  28                 } else {
  29                         defaultColor = [NSColor blackColor];
  30                 }
  31
  32                 // Process the first line...
  33                 {
  34                         NSDictionary *firstLineAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont boldSystemFontOfSize:[NSFont systemFontSize]], NSFontAttributeName, defaultColor, NSForegroundColorAttributeName, paragraphStyle, NSParagraphStyleAttributeName, nil];
  35
  36                         NSRect firstLineRect = NSMakeRect(cellPoint.x+5, cellPoint.y+1, cellSize.width-5, cellSize.height);
  37
  38                         id firstString = [(NSArray *)[self objectValue] objectAtIndex:0];
  39                         NSMutableAttributedString *firstAttrString;
  40
  41                         if ([firstString isKindOfClass:[NSAttributedString class]]) {
  42                                 firstAttrString = [[[NSMutableAttributedString alloc] initWithAttributedString:firstString] autorelease];
  43                                 [firstAttrString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0,[firstAttrString length])];
  44                                 if ([defaultColor isEqual:[NSColor whiteColor]]) {
  45                                 [firstAttrString addAttribute:NSForegroundColorAttributeName value:defaultColor range:NSMakeRange(0,[firstAttrString length])];
  46                                 }
  47                         } else if ([firstString isKindOfClass:[NSString class]]) {
  48                                 firstAttrString = [[[NSMutableAttributedString alloc] initWithString:firstString attributes:firstLineAttributes] autorelease];
  49                         } else {
  50                                 firstAttrString = [[[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Object (%@) is not a string", firstString] attributes:firstLineAttributes] autorelease];
  51                         }
  52
  53                         [controlView lockFocus];
  54
  55                         [firstAttrString drawInRect:firstLineRect];
  56
  57                         [controlView unlockFocus];
  58
  59                         secondaryLineRect = NSMakeRect(cellPoint.x+5, (cellPoint.y+1+[firstAttrString size].height), cellSize.width-5, cellSize.height);
  60                 }
  61
  62                 // Process the secondary lines
  63                 {
  64                         NSDictionary *secondaryLineAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]], NSFontAttributeName, defaultColor, NSForegroundColorAttributeName, paragraphStyle, NSParagraphStyleAttributeName, nil];
  65
  66                         NSMutableArray *tMArray = [NSMutableArray arrayWithArray:(NSArray *)[self objectValue]];
  67                         [tMArray removeObjectAtIndex:0]; // Remove the first line string... already handled that above!
  68
  69                         NSEnumerator *enumerator = [tMArray objectEnumerator];
  70                         id secondaryString;
  71
  72                         while ((secondaryString = [enumerator nextObject])) {
  73
  74                                 NSMutableAttributedString *secondaryAttrString;
  75
  76                                 if ([secondaryString isKindOfClass:[NSAttributedString class]]) {
  77                                         secondaryAttrString = [[[NSMutableAttributedString alloc] initWithAttributedString:secondaryString] autorelease];
  78                                         [secondaryAttrString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0,[secondaryAttrString length])];
  79                                         if ([defaultColor isEqual:[NSColor whiteColor]]) {
  80                                         [secondaryAttrString addAttribute:NSForegroundColorAttributeName value:defaultColor range:NSMakeRange(0,[secondaryAttrString length])];
  81                                         }
  82                                 } else if ([secondaryString isKindOfClass:[NSString class]]) {
  83                                         secondaryAttrString = [[[NSMutableAttributedString alloc] initWithString:secondaryString attributes:secondaryLineAttributes] autorelease];
  84                                 } else {
  85                                         secondaryAttrString = [[[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Object (%@) is not a string", secondaryString] attributes:secondaryLineAttributes] autorelease];
  86                                 }
  87
  88                                 [controlView lockFocus];
  89
  90                                 [secondaryAttrString drawInRect:secondaryLineRect];
  91
  92                                 [controlView unlockFocus];
  93
  94                                 secondaryLineRect.origin.y = secondaryLineRect.origin.y+[secondaryAttrString size].height; // modify the rect for the next loop, based on the size and location of the most recently processed line.
  95
  96                         }
  97                 }
  98         } else {
  99                 [super drawInteriorWithFrame:cellFrame inView:controlView];
 100         }
 101 }
 102
 103 @end