gecko-dev/camino/ToolTip.mm

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Richard Schreyer
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#import "ToolTip.h"
#import "NSScreen+Utils.h"
@interface ToolTip (ToolTipPrivateMethods)
@end
@implementation ToolTip
- (id)init
{
self = [super init];
if (self) {
mPanel = [[NSPanel alloc] initWithContentRect: NSMakeRect(0.0, 0.0, 200.0, 200.0) styleMask: NSBorderlessWindowMask backing: NSBackingStoreBuffered defer: YES];
mTextField = [[[NSTextField alloc] initWithFrame: NSMakeRect(0.0, 0.0, 200.0, 200.0)] autorelease];
[[mPanel contentView] addSubview: mTextField];
[mPanel setHasShadow: YES];
[mTextField setAutoresizingMask: NSViewWidthSizable | NSViewHeightSizable];
[mTextField setBackgroundColor: [NSColor colorWithCalibratedRed: 1.0 green: 1.0 blue: .81 alpha: 1.0]];
[mTextField setDrawsBackground: YES];
[mTextField setEditable: NO];
[mTextField setSelectable: NO];
[mTextField setFont: [NSFont toolTipsFontOfSize: [NSFont smallSystemFontSize]]];
[mTextField setBezeled: NO];
[mTextField setBordered: NO];
}
return self;
}
- (void)dealloc
{
[mPanel close];
[mPanel release];
[super dealloc];
}
- (void)showToolTipAtPoint:(NSPoint)point withString:(NSString*)string
{
if ([string length] == 0)
return;
NSScreen* screen = [NSScreen screenForPoint: point];
if (!screen)
screen = [NSScreen mainScreen];
if (screen) {
NSRect screenFrame = [screen visibleFrame];
NSSize screenSize = screenFrame.size;
NSTextView* textView = [[NSTextView alloc] initWithFrame: screenFrame];
// find out how large the tooltip needs to be
[textView setString: string];
[textView setMinSize: NSMakeSize(0.0, 0.0)];
[textView setMaxSize: screenSize];
[textView setVerticallyResizable: YES];
[textView setHorizontallyResizable: YES];
[textView setFont: [NSFont toolTipsFontOfSize: [NSFont smallSystemFontSize]]];
[textView sizeToFit];
NSSize textSize = NSMakeSize( ceil( NSWidth([textView frame]) ), ceil( NSHeight([textView frame]) ) );
// set up the panel
[mTextField setStringValue: string];
[mPanel setContentSize: textSize];
// the given point is right where the mouse pointer is. We want the tooltip's
// top left corner somewhere below that, but not if that'll put it off the monitor. There
// is no way that we can go off the top of the monitor because cocoa won't let us position a window
// that way
const int kVOffset = 20;
if ( point.y - kVOffset - textSize.height > NSMinY(screenFrame) )
point.y -= kVOffset;
else
point.y += kVOffset;
[mPanel setFrameTopLeftPoint: point];
// if it goes off the edge of the screen, shift around to put it all on the screen
float amountOffScreenX = NSMaxX(screenFrame) - NSMaxX([mPanel frame]);
if (amountOffScreenX < 0) {
NSRect movedFrame = [mPanel frame];
movedFrame.origin.x += amountOffScreenX;
[mPanel setFrame: movedFrame display: NO];
}
// show the panel
[mPanel orderFront: nil];
}
}
- (void)closeToolTip
{
[mPanel close];
}
@end