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// -*- mode:objc -*-
// $Id: PTYScrollView.m,v 1.23 2008-09-09 22:10:05 yfabian Exp $
/*
** PTYScrollView.m
**
** Copyright (c) 2002, 2003
**
** Author: Fabian, Ujwal S. Setlur
** Initial code by Kiichi Kusama
**
** Project: iTerm
**
** Description: NSScrollView subclass. Handles scroll detection and background images.
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
// Debug option
#define DEBUG_ALLOC 0
#define DEBUG_METHOD_TRACE 0
#import <iTerm/iTerm.h>
#import <iTerm/PTYScrollView.h>
#import <iTerm/PTYTextView.h>
@implementation PTYScroller
- (id)init
{
userScroll=NO;
return [super init];
}
- (void) mouseDown: (NSEvent *)theEvent
{
//NSLog(@"PTYScroller: mouseDown");
[super mouseDown: theEvent];
if([self floatValue] != 1)
userScroll=YES;
else
userScroll = NO;
}
- (void)trackScrollButtons:(NSEvent *)theEvent
{
[super trackScrollButtons:theEvent];
//NSLog(@"scrollbutton");
if([self floatValue] != 1)
userScroll=YES;
else
userScroll = NO;
}
- (void)trackKnob:(NSEvent *)theEvent
{
[super trackKnob:theEvent];
//NSLog(@"trackKnob: %f", [self floatValue]);
if([self floatValue] != 1)
userScroll=YES;
else
userScroll = NO;
}
- (BOOL)userScroll
{
return userScroll;
}
- (void)setUserScroll: (BOOL) scroll
{
userScroll=scroll;
}
- (NSScrollerPart)hitPart
{
NSScrollerPart h = [super hitPart];
return h;
}
@end
@implementation PTYScrollView
- (void) dealloc
{
#if DEBUG_ALLOC
NSLog(@"%s: 0x%x", __PRETTY_FUNCTION__, self);
#endif
[backgroundImage release];
[super dealloc];
}
- (id)initWithFrame:(NSRect)frame
{
#if DEBUG_ALLOC
NSLog(@"%s: 0x%x: initWithFrame:%d,%d,%d,%d",
__PRETTY_FUNCTION__, self,
frame.origin.x, frame.origin.y,
frame.size.width, frame.size.height);
#endif
if ((self = [super initWithFrame:frame]) == nil)
return nil;
NSParameterAssert([self contentView] != nil);
PTYScroller *aScroller;
aScroller=[[PTYScroller alloc] init];
//[aScroller setControlSize:NSSmallControlSize];
[self setVerticalScroller: aScroller];
[aScroller release];
return self;
}
- (void) drawBackgroundImageRect: (NSRect) rect
{
//NSLog(@"%s", __PRETTY_FUNCTION__);
NSRect srcRect;
//NSLogRect([self frame]);
// resize image if we need to
if([backgroundImage size].width != [self documentVisibleRect].size.width ||
[backgroundImage size].height != [self documentVisibleRect].size.height)
{
[backgroundImage setSize: [self documentVisibleRect].size];
}
srcRect = rect;
// normalize to origin of visible rectangle
srcRect.origin.y -= [self documentVisibleRect].origin.y;
// do a vertical flip of coordinates
srcRect.origin.y = [backgroundImage size].height - srcRect.origin.y - srcRect.size.height;
// draw the image rect
[[self backgroundImage] compositeToPoint: NSMakePoint(rect.origin.x, rect.origin.y + rect.size.height) fromRect: srcRect operation: NSCompositeCopy fraction: (1.0 - [self transparency])];
}
- (void)scrollWheel:(NSEvent *)theEvent
{
PTYScroller *verticalScroller = (PTYScroller *)[self verticalScroller];
NSRect scrollRect;
scrollRect= [self documentVisibleRect];
scrollRect.origin.y-=[theEvent deltaY] * [self verticalLineScroll];
[[self documentView] scrollRectToVisible: scrollRect];
scrollRect= [self documentVisibleRect];
if(scrollRect.origin.y+scrollRect.size.height < [[self documentView] frame].size.height)
[verticalScroller setUserScroll: YES];
else
[verticalScroller setUserScroll: NO];
}
- (void)detectUserScroll
{
NSRect scrollRect;
PTYScroller *verticalScroller = (PTYScroller *)[self verticalScroller];
scrollRect= [self documentVisibleRect];
if(scrollRect.origin.y+scrollRect.size.height < [[self documentView] frame].size.height)
[verticalScroller setUserScroll: YES];
else
[verticalScroller setUserScroll: NO];
}
// background image
- (NSImage *) backgroundImage
{
return (backgroundImage);
}
- (void) setBackgroundImage: (NSImage *) anImage
{
[backgroundImage release];
[anImage retain];
backgroundImage = anImage;
[backgroundImage setScalesWhenResized: YES];
[backgroundImage setSize: [self documentVisibleRect].size];
}
- (float) transparency
{
return (transparency);
}
- (void) setTransparency: (float) theTransparency
{
if(theTransparency >= 0 && theTransparency <= 1)
{
transparency = theTransparency;
[self setNeedsDisplay: YES];
}
}
@end
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