Source/BSLineNumberView.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2008, 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 "BSLineNumberView.h"
  18 #import "Breakpoint.h"
  19 #import "BSSourceView.h"
  20
  21 @implementation BSLineNumberView
  22
  23 @synthesize sourceView, lineNumberRange, markers;
  24
  25 /**
  26  * Initializer for the line number view
  27  */
  28 - (id)initWithFrame:(NSRect)frame
  29 {
  30         if (self = [super initWithFrame:frame])
  31         {
  32                 lineNumberRange = NSMakeRange(0, 0);
  33         }
  34         return self;
  35 }
  36
  37 /**
  38  * Flip the coordinates
  39  */
  40 - (BOOL)isFlipped
  41 {
  42         return YES;
  43 }
  44
  45 /**
  46  * Draws the line numbers whenever necessary
  47  */
  48 - (void)drawRect:(NSRect)rect
  49 {
  50         // background color
  51         [[NSColor colorWithDeviceRed:0.871 green:0.871 blue:0.871 alpha:1] set];
  52         [NSBezierPath fillRect:rect];
  53
  54         [[NSColor blackColor] set];
  55         [NSBezierPath strokeLineFromPoint:NSMakePoint(rect.origin.x, rect.origin.y) toPoint:NSMakePoint(rect.origin.x + rect.size.width, rect.origin.y)];
  56
  57         [[NSColor grayColor] set];
  58         [NSBezierPath strokeLineFromPoint:NSMakePoint(rect.origin.x, rect.size.height) toPoint:NSMakePoint(rect.origin.x + rect.size.width, rect.size.height)];
  59
  60         // font attributes for the line number
  61         NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont fontWithName:@"Monaco" size:9.0], NSFontAttributeName, [NSColor grayColor], NSForegroundColorAttributeName, nil];
  62
  63         lineNumberRange = NSMakeRange(0, 0);
  64
  65         unsigned i = 0, line = 1;
  66         while (i < [[[sourceView textView] layoutManager] numberOfGlyphs])
  67         {
  68                 NSRange fragRange;
  69                 NSRect fragRect = [self convertRect:[[[sourceView textView] layoutManager] lineFragmentRectForGlyphAtIndex:i effectiveRange:&fragRange] fromView:[sourceView textView]];
  70                 fragRect.origin.x = rect.origin.x; // horizontal scrolling matters not
  71
  72                 // we want to paint the top and bottom line number even if they're cut off
  73                 NSRect testRect = rect;
  74                 testRect.origin.y -= fragRect.size.height - 1;
  75                 testRect.size.height += fragRect.size.height - 1;
  76                 if (NSPointInRect(fragRect.origin, testRect))
  77                 {
  78                         lineNumberRange.location = (lineNumberRange.length == 0 ? line : lineNumberRange.location);
  79                         lineNumberRange.length++;
  80                         NSString *num = [NSString stringWithFormat:@"%u", line];
  81                         NSSize strSize = [num sizeWithAttributes:attrs];
  82                         [num drawAtPoint:NSMakePoint([self frame].size.width - strSize.width - 3, fragRect.origin.y + ((fragRect.size.height - strSize.height) / 2)) withAttributes:attrs];
  83                         if ([markers containsObject:[[Breakpoint alloc] initWithLine:line inFile:[sourceView file]]])
  84                         {
  85                                 NSLog(@"marking %i", line);
  86                         }
  87                 }
  88
  89                 i += fragRange.length;
  90                 line++;
  91         }
  92 }
  93
  94 /**
  95  * Handles the mouse down event (which is adding, deleting, and toggling breakpoints)
  96  */
  97 - (void)mouseDown:(NSEvent *)event
  98 {
  99         NSTextView *textView = [sourceView textView];
 100
 101         NSPoint clickLoc = [self convertPoint:[event locationInWindow] fromView:nil];
 102
 103         unsigned line = 1;
 104         unsigned i = 0;
 105         while (i < [[textView layoutManager] numberOfGlyphs])
 106         {
 107                 NSRange fragRange;
 108                 NSRect fragRect = [[textView layoutManager] lineFragmentRectForGlyphAtIndex:i effectiveRange:&fragRange];
 109                 fragRect.size.width = [self bounds].size.width;
 110                 if (NSPointInRect(clickLoc, fragRect))
 111                 {
 112                         [[sourceView delegate] gutterClickedAtLine:(line + lineNumberRange.location - 1) forFile:[sourceView file]];
 113                         return;
 114                 }
 115
 116                 i += fragRange.length;
 117                 line++;
 118         }
 119 }
 120
 121 @end