gistfile1.mm

//
//  RLayoutAppDelegate.m
//  RLayout
//
//  Created by Noel Cower on 4/8/10.
//  Copyright 2010 Noel Cower. All rights reserved.
//

#import "RLayoutAppDelegate.h"

@implementation RLayoutAppDelegate

@synthesize window;

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
	// create layout view
	layout = [[[NLayoutView alloc] initWithFrame:[window.contentView bounds]] autorelease];
	[window setContentView:layout];
	[layout setAutoresizingMask:								// since the layout view cannot do layout on itself,
	 NSViewMinXMargin|NSViewMaxXMargin|NSViewWidthSizable|		// I have to use the abysmal anchor/spring stuff to
	 NSViewMinYMargin|NSViewMaxYMargin|NSViewHeightSizable];	// get it to autoresize with the window's contentview
	
	// add draggable subview
	horiz = [[[NDraggable alloc] initWithFrame:NSMakeRect(128, 128, 10, 10)] autorelease];
	[layout addSubview:horiz];
	[horiz setAutoresizingMask:NSViewMinYMargin|NSViewMaxYMargin];
	[horiz setDelegate:self];
	
	vert = [[[NDraggable alloc] initWithFrame:NSMakeRect(128, 128, 10, 10)] autorelease];
	[layout addSubview:vert];
	[vert setAutoresizingMask:NSViewMinXMargin|NSViewMaxXMargin];
	[vert setDelegate:self];
	
	center = [[[NDraggable alloc] initWithFrame:NSMakeRect(128, 128, 10, 10)] autorelease];
	[center setAutoresizingMask:NSViewMinXMargin|NSViewMaxXMargin|NSViewMinYMargin|NSViewMaxYMargin];
	[layout addSubview:center];
	[center setDelegate:self];
	
	[layout setLayoutParam:NLFillHorizontal forSubview:horiz withBase:nil];
	[layout setLayoutParam:NLCenterVertical forSubview:horiz withBase:center];
	
	[layout setLayoutParam:NLFillVertical forSubview:vert withBase:nil];
	[layout setLayoutParam:NLCenterHorizontal forSubview:vert withBase:center];
	
	// set up four button subviews
	// upper left
	NSButton *button = [[[NSButton alloc] initWithFrame:NSMakeRect(0, 0, 64, 64)] autorelease];
	[layout addSubview:button];
	[layout setLayoutParam:NLLeftOf forSubview:button withBase:vert];
	[layout setLayoutParam:NLAbove forSubview:button withBase:horiz];
	[layout setLayoutParam:NLAlignLeft forSubview:button withBase:nil];
	[layout setLayoutParam:NLAlignTop forSubview:button withBase:nil];
	
	// upper right
	button = [[[NSButton alloc] initWithFrame:NSMakeRect(0, 0, 64, 64)] autorelease];
	[layout addSubview:button];
	[layout setLayoutParam:NLRightOf forSubview:button withBase:vert];
	[layout setLayoutParam:NLAbove forSubview:button withBase:horiz];
	[layout setLayoutParam:NLAlignRight forSubview:button withBase:nil];
	[layout setLayoutParam:NLAlignTop forSubview:button withBase:nil];
	
	// lower left
	button = [[[NSButton alloc] initWithFrame:NSMakeRect(0, 0, 64, 64)] autorelease];
	[layout addSubview:button];
	[layout setLayoutParam:NLLeftOf forSubview:button withBase:vert];
	[layout setLayoutParam:NLBelow forSubview:button withBase:horiz];
	[layout setLayoutParam:NLAlignLeft forSubview:button withBase:nil];
	[layout setLayoutParam:NLAlignBottom forSubview:button withBase:nil];
	
	// lower right
	button = [[[NSButton alloc] initWithFrame:NSMakeRect(0, 0, 64, 64)] autorelease];
	[layout addSubview:button];
	[layout setLayoutParam:NLRightOf forSubview:button withBase:vert];
	[layout setLayoutParam:NLBelow forSubview:button withBase:horiz];
	[layout setLayoutParam:NLAlignRight forSubview:button withBase:nil];
	[layout setLayoutParam:NLAlignBottom forSubview:button withBase:nil];
	
	// do initial layout
	[layout performLayout];
}

- (void)draggableFrameDidChange:(NDraggable*)dragger {
	// This would be a case of circular relations - that is, each draggable view depends on
	// the other draggable views to update its position
	if (dragger != center) {
		NSRect to = [center frame];
		if (dragger == vert) {
			to.origin.x = [vert frame].origin.x;
		} else if (dragger == horiz) {
			to.origin.y = [horiz frame].origin.y;
		}
		[center setFrame:to];
	}
}

@end