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/*
* Copyright (C) 2004 Stefan Kleine Stegemann
*
* 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.
*/
#include <ToolViewBuilder.h>
#include <Foundation/NSException.h>
const float kDefaulToolViewSpacing = 5.0;
/**
* Non-Public methods.
*/
@interface ToolViewBuilder (Private)
- (void) _centerViewVertically: (NSView*)aView;
- (void) _ensureViewFitsInTargetView: (NSView*)aView;
@end
@implementation ToolViewBuilder
- (id) initWithView: (NSView*)aView yBorder: (float)points
{
self = [super init];
if (self)
{
[self setSpacing: kDefaulToolViewSpacing];
yBorder = points;
view = aView;
runningX = 0.0;
requiredWidth = 0.0;
isFirstSubview = YES;
verticallyCenteredViews = [[NSMutableSet alloc] init];
}
return self;
}
- (id) initWithView: (NSView*)aView
{
return [self initWithView: aView yBorder: 0.0];
}
- (void) dealloc
{
[verticallyCenteredViews release];
[super dealloc];
}
+ (ToolViewBuilder*) builderWithView: (NSView*)aView
{
return [self builderWithView: aView yBorder: 0.0];
}
+ (ToolViewBuilder*) builderWithView: (NSView*)aView yBorder: (float)points
{
return [[[self alloc] initWithView: aView yBorder: points] autorelease];
}
- (NSView*) view
{
return view;
}
- (ToolViewBuilder*) setSpacing: (float)aSpacing
{
NSAssert(aSpacing >= 0, @"negative spacing");
spacing = aSpacing;
return self;
}
- (float) spacing
{
return spacing;
}
- (float) yBorder
{
return yBorder;
}
- (ToolViewBuilder*) advance: (float)points
{
runningX = runningX + points;
requiredWidth = requiredWidth + points;
return self;
}
- (float) xPos
{
return runningX;
}
- (float) requiredWidth
{
return requiredWidth;
}
- (ToolViewBuilder*) addView: (NSView*)aView
{
if (!isFirstSubview)
{
[self advance: [self spacing]];
}
else
{
isFirstSubview = NO;
}
[aView setFrameOrigin: NSMakePoint([self xPos], NSMinY([aView frame]))];
[[self view] addSubview: aView];
runningX = runningX + NSWidth([aView frame]);
requiredWidth = requiredWidth + NSWidth([aView frame]);
[self _ensureViewFitsInTargetView: aView];
return self;
}
- (ToolViewBuilder*) addViewVerticallyCentered: (NSView*)aView
{
[self _centerViewVertically: aView];
[verticallyCenteredViews addObject: aView];
return [self addView: aView];
}
- (ToolViewBuilder*) recenterViewsVertically
{
NSEnumerator* e = [verticallyCenteredViews objectEnumerator];
NSView* aView;
while ((aView = [e nextObject]))
{
[self _centerViewVertically: aView];
}
return self;
}
@end
/* ----------------------------------------------------- */
/* Category Private */
/* ----------------------------------------------------- */
@implementation ToolViewBuilder (Private)
- (void) _centerViewVertically: (NSView*)aView
{
NSRect viewFrame = [aView frame];
[aView setFrameOrigin:
NSMakePoint(NSMinX(viewFrame),
(NSHeight([[self view] frame]) / 2) - (NSHeight(viewFrame) / 2))];
}
- (void) _ensureViewFitsInTargetView: (NSView*)aView
{
BOOL needsRecenter = NO;
NSRect actualFrame = [[self view] frame];
NSSize newSize = actualFrame.size;
if ([self requiredWidth] > NSWidth(actualFrame))
{
newSize.width = [self requiredWidth];
}
float minRequiredHeight = NSHeight([aView frame]) + ([self yBorder] * 2);
if (minRequiredHeight > NSHeight(actualFrame))
{
newSize.height = minRequiredHeight;
needsRecenter = YES;
}
if (!NSEqualSizes(actualFrame.size, newSize))
{
[[self view] setFrameSize: newSize];
if (needsRecenter)
{
[self recenterViewsVertically];
}
}
}
@end
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