PTYWindow.m

/* -*- mode:objc -*- */
/* $Id: PTYWindow.m,v 1.17 2008-09-24 22:35:39 yfabian Exp $ */
/* Incorporated into iTerm.app by Ujwal S. Setlur */
/*
 **  PTYWindow.m
 **
 **  Copyright (c) 2002, 2003
 **
 **  Author: Fabian, Ujwal S. Setlur
 **	     Initial code by Kiichi Kusama
 **
 **  Project: iTerm
 **
 **  Description: NSWindow subclass. Implements transparency.
 **
 **  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.
 */

#import <iTerm/iTerm.h>
#import <iTerm/PTYWindow.h>
#import <iTerm/PreferencePanel.h>
#import <iTerm/PseudoTerminal.h>
#import <iTerm/iTermController.h>

#define DEBUG_METHOD_ALLOC	0
#define DEBUG_METHOD_TRACE	0
#define DEBUG_WINDOW_LAYOUT 0


@implementation PTYWindow

- (void) dealloc
{
#if DEBUG_METHOD_ALLOC
    NSLog(@"%s: 0x%x", __PRETTY_FUNCTION__, self);
#endif

	[drawer release];
	
    [super dealloc];
    
}

- initWithContentRect:(NSRect)contentRect
	    styleMask:(unsigned int)aStyle
	      backing:(NSBackingStoreType)bufferingType 
		defer:(BOOL)flag
{
#if DEBUG_METHOD_ALLOC
    NSLog(@"%s: 0x%x", __PRETTY_FUNCTION__, self);
#endif
	
    if ((self = [super initWithContentRect:contentRect
				 styleMask:aStyle
				   backing:bufferingType 
				     defer:flag])
	!= nil) 
    {
		[self setAlphaValue:0.9999];
		blurFilter = 0;
		layoutDone = NO;
    }

    return self;
}



- (int)screenNumber
{
	return [[[[self screen] deviceDescription] objectForKey:@"NSScreenNumber"] intValue];
}

- (void)smartLayout
{
	NSEnumerator* iterator;

	int currentScreen = [self screenNumber];
	NSRect screenRect = [[self screen] visibleFrame];

	// Get a list of relevant windows, same screen & workspace
	NSMutableArray* windows = [[NSMutableArray alloc] init];
	iterator = [[[iTermController sharedInstance] terminals] objectEnumerator];
	PseudoTerminal* term;
	while(term = [iterator nextObject]) {
		PTYWindow* otherWindow = (PTYWindow*)[term window];
		if(otherWindow == self) continue;

		int otherScreen = [otherWindow screenNumber];
		if(otherScreen != currentScreen) continue;

		[windows addObject:otherWindow];
	}


	// Find the spot on screen with the lowest window intersection
	float bestIntersect = INFINITY;
	NSRect bestFrame = [self frame];

	NSRect placementRect = NSMakeRect(
		screenRect.origin.x,
		screenRect.origin.y,
		screenRect.size.width-[self frame].size.width,
		screenRect.size.height-[self frame].size.height
	);

	for(int x = 0; x < placementRect.size.width/2; x += 50) {
		for(int y = 0; y < placementRect.size.height/2; y += 50) {
			NSRect testRects[4] = {[self frame]};

			// Top Left
			testRects[0].origin.x = placementRect.origin.x + x;
			testRects[0].origin.y = placementRect.origin.y + placementRect.size.height - y;

			// Top Right
			testRects[1] = testRects[0];
			testRects[1].origin.x = placementRect.origin.x + placementRect.size.width - x;
			
			// Bottom Left
			testRects[2] = testRects[0];
			testRects[2].origin.y = placementRect.origin.y + y;
			
			// Bottom Right
			testRects[3] = testRects[1];
			testRects[3].origin.y = placementRect.origin.y + y;
			
			for(int i = 0; i < sizeof(testRects)/sizeof(NSRect); i++) {
				iterator = [windows objectEnumerator];
				PTYWindow* other;
				float badness = 0.0f;
				while(other = [iterator nextObject]) {
					NSRect otherFrame = [other frame];
					NSRect intersection = NSIntersectionRect(testRects[i], otherFrame);
					badness += intersection.size.width * intersection.size.height;
				}

#if DEBUG_WINDOW_LAYOUT
				static const char const * names[] = {"TL", "TR", "BL", "BR"};
				NSLog(@"%s: testRect:%@, bad:%.2f", names[i], NSStringFromRect(testRects[i]), badness);
#endif

				if(badness < bestIntersect) {
					bestIntersect = badness;
					bestFrame = testRects[i];
				}

				// Shortcut if we've found an empty spot
				if(bestIntersect == 0) {
					goto end;
				}
			}
		}
	}

end:
	[windows release];
	[super setFrameOrigin:bestFrame.origin];
}

- (void)setLayoutDone
{
	layoutDone = YES;
}

- (void)makeKeyAndOrderFront:(id)sender
{
	if(!layoutDone) {
		layoutDone = YES;
		[[self delegate] windowWillShowInitial];
	}
	[super makeKeyAndOrderFront:sender];
}

- (void)toggleToolbarShown:(id)sender
{
#if DEBUG_METHOD_TRACE
    NSLog(@"%s(%d):-[PTYWindow toggleToolbarShown]",
          __FILE__, __LINE__);
#endif
    id delegate = [self delegate];

    // Let our delegate know
    if([delegate conformsToProtocol: @protocol(PTYWindowDelegateProtocol)])
	[delegate windowWillToggleToolbarVisibility: self];
    
    [super toggleToolbarShown: sender];

    // Let our delegate know
    if([delegate conformsToProtocol: @protocol(PTYWindowDelegateProtocol)])
	[delegate windowDidToggleToolbarVisibility: self];    
    
}

- (NSDrawer *) drawer
{
	return (drawer);
}

- (void) setDrawer: (NSDrawer *) aDrawer
{
	[aDrawer retain];
	[drawer release];
	drawer = aDrawer;
}

- (BOOL)canBecomeKeyWindow
{
	return YES;
}

@end