William Bowling is sharing code with you

Bitbucket is a code hosting site. Unlimited public and private repositories. Free for small teams.

Don't show this again

wbowling / adium (fork of adium / adium)

Fork of Adium for patches/improvements

Clone this repository (size: 338.7 MB): HTTPS / SSH 
hg clone https://bitbucket.org/wbowling/adium
hg clone ssh://hg@bitbucket.org/wbowling/adium

adium / Source / AIAutoScrollTextView.m

  • 5c8436556791
  • 105 loc
  • 3.3 KB
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105

/* 
 * Adium is the legal property of its developers, whose names are listed in the copyright file included
 * with this source distribution.
 * 
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 * 
 * This program 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 General
 * Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with this program; if not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#import "AIAutoScrollTextView.h"

#define ABOUT_SCROLL_FPS        30.0
#define ABOUT_SCROLL_RATE       1.0

@interface AIAutoScrollTextView (Private)
- (void)startScrolling;
- (void)stopScrolling;
@end

@implementation AIAutoScrollTextView

- (void)loadText:(NSAttributedString *)textToLoad
{
        [[self textStorage] setAttributedString:textToLoad];
        [self startScrolling];
}

- (void)dealloc
{
        [scrollTimer invalidate]; [scrollTimer release]; scrollTimer = nil;
        [eventLoopScrollTimer invalidate]; [eventLoopScrollTimer release]; eventLoopScrollTimer = nil;
        [super dealloc];
}

//When the user scrolls stop the automatic scrolling
- (void)scrollWheel:(NSEvent *)theEvent
{
        if (scrollTimer)
                [self stopScrolling];

        [super scrollWheel:theEvent];
}

- (void)toggleScrolling
{
        if (scrollTimer)
                [self stopScrolling];
        else
                [self startScrolling];
}

- (void)startScrolling
{
        [[self enclosingScrollView] setLineScroll:0.0];
        [[self enclosingScrollView] setPageScroll:0.0];
        [[self enclosingScrollView] setVerticalScroller:nil];
        [[self enclosingScrollView] setHasVerticalScroller:NO];
        
        //Start scrolling
        scrollLocation = [[[self enclosingScrollView] contentView] bounds].origin.y;
        maxScroll = [[self textStorage] size].height - [[self enclosingScrollView] documentVisibleRect].size.height;
        scrollTimer = [[NSTimer scheduledTimerWithTimeInterval:(1.0/ABOUT_SCROLL_FPS)
                                                                                                        target:self
                                                                                                  selector:@selector(scrollTimer:)
                                                                                                  userInfo:nil
                                                                                                   repeats:YES] retain];
        eventLoopScrollTimer = [[NSTimer timerWithTimeInterval:(1.0/ABOUT_SCROLL_FPS)
                                                                                                        target:self
                                                                                                  selector:@selector(scrollTimer:)
                                                                                                  userInfo:nil
                                                                                                   repeats:YES] retain];
        [[NSRunLoop currentRunLoop] addTimer:eventLoopScrollTimer forMode:NSEventTrackingRunLoopMode];
}

- (void)stopScrolling
{
        [scrollTimer invalidate]; [scrollTimer release]; scrollTimer = nil;
        [eventLoopScrollTimer invalidate]; [eventLoopScrollTimer release]; eventLoopScrollTimer = nil;

        //Enable scrolling and show the scrollbar
        [[self enclosingScrollView] setLineScroll:10.0];
        [[self enclosingScrollView] setPageScroll:10.0];
        [[self enclosingScrollView] setVerticalScroller:[[[NSScroller alloc] init] autorelease]];
        [[self enclosingScrollView] setHasVerticalScroller:YES];
}

//Scroll the credits
- (void)scrollTimer:(NSTimer *)scrollTimer
{
        scrollLocation += ABOUT_SCROLL_RATE;
        
        if (scrollLocation > maxScroll) scrollLocation = 0;
        if (scrollLocation < 0) scrollLocation = maxScroll;
        
        [self scrollPoint:NSMakePoint(0, scrollLocation)];
}

@end