root/tags/2C11/AICustomTabDragWindow.m

//
//  AICustomTabDragWindow.m
//  Adium
//
//  Created by Adam Iser on Sat Mar 06 2004.
//  Copyright (c) 2004 __MyCompanyName__. All rights reserved.
//

#import "AICustomTabDragWindow.h"
#import "AICustomTabsView.h"
#import "AICustomTabCell.h"
#import "ESFloater.h"

#define CUSTOM_TABS_INDENT              3                                       //Indent on left and right of tabbar
#define CONTENT_OFFSET_X                1                                       //Offset of content view relative to tabs


@interface AICustomTabDragWindow (PRIVATE)
- (id)initForCustomTabView:(AICustomTabsView *)inTabView cell:(AICustomTabCell *)inTabCell transparent:(BOOL)transparent;
@end

@implementation AICustomTabDragWindow
+ (AICustomTabDragWindow *)dragWindowForCustomTabView:(AICustomTabsView *)inTabView cell:(AICustomTabCell *)inTabCell transparent:(BOOL)transparent
{
        return([[[self alloc] initForCustomTabView:inTabView cell:inTabCell transparent:transparent] autorelease]);
}

//init
- (id)initForCustomTabView:(AICustomTabsView *)inTabView cell:(AICustomTabCell *)inTabCell transparent:(BOOL)transparent

{
        [super init];
        
        floaterTabImage = [[self dragTabImageForTabCell:inTabCell inCustomTabsView:inTabView] retain];
        floaterWindowImage = [[self dragWindowImageForWindow:[inTabView window] customTabsView:inTabView tabCell:inTabCell] retain];
        useFancyAnimations = ( floaterWindowImage ? YES : NO );
        
        if(useFancyAnimations){
                //Create a floating window for our tab
                dragTabFloater = [ESFloater floaterWithImage:floaterTabImage styleMask:NSBorderlessWindowMask title:nil];
                [dragTabFloater setMaxOpacity:1.0];
                
                //Create a floating window for the stand-alone window our tab would produce
                dragWindowFloater = [ESFloater floaterWithImage:floaterWindowImage styleMask:NSTitledWindowMask title:[[inTabView window] title]];
                [dragWindowFloater setMaxOpacity:(transparent ? 0.75 : 1.00)];
        }
                
        return(self);
}

- (void)closeWindow
{
    [dragTabFloater close:nil]; dragTabFloater = nil;
    [dragWindowFloater close:nil]; dragWindowFloater = nil;
}

//dealloc
- (void)dealloc
{
        [floaterTabImage release];
        [floaterWindowImage release];
    [dragTabFloater close:nil];
    [dragWindowFloater close:nil];
        
        [super dealloc];
}

//Toggle display of the full drag window
- (void)setDisplayingFullWindow:(BOOL)inFullWindow animate:(BOOL)animate
{
        if(useFancyAnimations){
                fullWindow = inFullWindow;
                [dragWindowFloater setVisible:fullWindow animate:animate];
                [dragTabFloater setVisible:!fullWindow animate:animate];
        }
}

//Move the drag floater to a screen point
//If the drag window is fading out, we don't move it.  Things look cleaner this way.
- (void)moveToPoint:(NSPoint)inPoint
{
        if(useFancyAnimations){
                [dragTabFloater moveFloaterToPoint:inPoint];
                if(fullWindow) [dragWindowFloater moveFloaterToPoint:NSMakePoint(inPoint.x - CUSTOM_TABS_INDENT, inPoint.y)];
        }
}
        
        
//Tab Imaging ----------------------------------------------------------------------------------------------------------
#pragma mark Drag Images
//Returns a drag image for the passed tab cell
- (NSImage *)dragTabImageForTabCell:(AICustomTabCell *)tabCell inCustomTabsView:(AICustomTabsView *)customTabsView
{
    NSImage     *dragTabImage = nil;
    
    if([customTabsView canDraw]){
        dragTabImage = [[[NSImage alloc] init] autorelease];
        [customTabsView lockFocus];
        [dragTabImage addRepresentation:[[[NSBitmapImageRep alloc] initWithFocusedViewRect:[tabCell frame]] autorelease]];
        [customTabsView unlockFocus];    
    }
        
    return(dragTabImage);
}

//Returns a drag window image for the passed window/bar/cell
- (NSImage *)dragWindowImageForWindow:(NSWindow *)window customTabsView:(AICustomTabsView *)customTabsView tabCell:(AICustomTabCell *)tabCell
{
    NSView      *contentView = [[tabCell tabViewItem]  view];
    NSImage     *dragWindowImage = nil;
    NSImage     *contentImage, *tabImage;    
    NSPoint     insertPoint;
        
    if([customTabsView canDraw] && [contentView canDraw]){
        //Get an image of the tab
        tabImage = [[[NSImage alloc] init] autorelease];
        [customTabsView lockFocus];
        [tabImage addRepresentation:[[[NSBitmapImageRep alloc] initWithFocusedViewRect:[tabCell frame]] autorelease]];
        [customTabsView unlockFocus];
        
        //Get an image of the tabView content view
        contentImage = [[[NSImage alloc] init] autorelease];
        [contentView lockFocus];
        [contentImage addRepresentation:[[[NSBitmapImageRep alloc] initWithFocusedViewRect:[contentView frame]] autorelease]];
        [contentView unlockFocus];
        
        //Create a drag image the size of the window
        dragWindowImage = [[[NSImage alloc] initWithSize:[[window contentView] frame].size] autorelease];
        [dragWindowImage setBackgroundColor:[NSColor clearColor]];
        [dragWindowImage lockFocus];
        
        //Draw the tabbar and tab
        [customTabsView drawBackgroundInRect:[customTabsView frame] withFrame:[customTabsView frame] selectedTabRect:NSMakeRect(0,0,0,0)];
        insertPoint = [customTabsView frame].origin;
        insertPoint.x += CUSTOM_TABS_INDENT; //Line the tab up a bit more realistically
        [tabImage compositeToPoint:insertPoint operation:NSCompositeCopy];
        
        //Draw the content
                NSPoint frameOrigin = [[[tabCell tabViewItem] tabView] frame].origin;
        [contentImage compositeToPoint:NSMakePoint(frameOrigin.x + CONTENT_OFFSET_X, frameOrigin.y) operation:NSCompositeCopy];
        
        [dragWindowImage unlockFocus];
    }
    
    return(dragWindowImage);
}

//Returns the drag image for a drag system call.  In 10.3 we return a blank image to keep the system drag code happy
//Our custom drag image code (the floating windows) screws up drag tracking events in anything before panther (10.3)
//On earlier systems we fall back to using the stock dragging code
- (NSImage *)dragImage
{
        if(useFancyAnimations){
                return([[[NSImage alloc] initWithSize:[floaterTabImage size]] autorelease]);
        }else{
                return(floaterTabImage);
        }
}


@end