Source/BSSourceViewTextView.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2011, Blue Static <http://www.bluestatic.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License as published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  10  * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with this program; if not,
  14  * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #import "BSSourceViewTextView.h"
  18
  19 #import "BSSourceView.h"
  20
  21 @implementation BSSourceViewTextView
  22
  23 - (void)drawRect:(NSRect)rect
  24 {
  25   [super drawRect:rect];
  26
  27   NSLayoutManager* layoutManager = [self layoutManager];
  28   NSUInteger i = 0, line = 1;
  29   while (i < [layoutManager numberOfGlyphs]) {
  30     NSRange fragRange;
  31     NSRect fragRect = [layoutManager lineFragmentRectForGlyphAtIndex:i
  32                                                       effectiveRange:&fragRange];
  33     if ([_sourceView markedLine] == line) {
  34       fragRect = [self convertRect:fragRect fromView:self];
  35       fragRect.origin.x = rect.origin.x;  // Flush all the way to the edge.
  36       [[[NSColor redColor] colorWithAlphaComponent:0.25] set];
  37       [NSBezierPath fillRect:fragRect];
  38       break;
  39     }
  40
  41     i += fragRange.length;
  42     ++line;
  43   }
  44 }
  45
  46 @end