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