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Viewing changes to src/core/MonoDevelop.Ide/MonoDevelop.Components/ImageButton.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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src/core/MonoDevelop.Ide/MonoDevelop.Components/ImageButton.cs
 
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//
 
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// ImageButton.cs
 
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//
 
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// Author:
 
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//       Lluis Sanchez Gual <lluis@xamarin.com>
 
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//
 
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// Copyright (c) 2012 Xamarin Inc. (http://xamarin.com)
 
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//
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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//
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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//
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using MonoDevelop.Ide;
 
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namespace MonoDevelop.Components
 
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{
 
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        public class ImageButton: Gtk.EventBox
 
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        {
 
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                Gdk.Pixbuf image;
 
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                Gdk.Pixbuf inactiveImage;
 
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                Gtk.Image imageWidget;
 
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                bool hasInactiveImage;
 
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                bool hover;
 
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                bool pressed;
 
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                public ImageButton ()
 
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                {
 
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                        Events |= Gdk.EventMask.EnterNotifyMask | Gdk.EventMask.LeaveNotifyMask | Gdk.EventMask.ButtonReleaseMask;
 
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                        VisibleWindow = false;
 
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                        imageWidget = new Gtk.Image ();
 
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                        imageWidget.Show ();
 
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                        Add (imageWidget);
 
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                }
 
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                public Gdk.Pixbuf Image {
 
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                        get { return image; }
 
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                        set {
 
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                                image = value;
 
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                                Gdk.Pixbuf oldInactive = null;
 
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                                if (!hasInactiveImage) {
 
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                                        oldInactive = inactiveImage;
 
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                                        inactiveImage = image != null ? ImageService.MakeTransparent (image, 0.5) : null;
 
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                                }
 
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                                LoadImage ();
 
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                                if (oldInactive != null)
 
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                                        oldInactive.Dispose ();
 
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                        }
 
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                }
 
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                public Gdk.Pixbuf InactiveImage {
 
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                        get { return hasInactiveImage ? inactiveImage : null; }
 
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                        set {
 
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                                if (!hasInactiveImage && inactiveImage != null)
 
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                                        inactiveImage.Dispose ();
 
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                                hasInactiveImage = true;
 
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                                inactiveImage = value;
 
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                                LoadImage ();
 
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                        }
 
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                }
 
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                protected override void OnDestroyed ()
 
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                {
 
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                        if (!hasInactiveImage && inactiveImage != null)
 
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                                inactiveImage.Dispose ();
 
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                        base.OnDestroyed ();
 
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                }
 
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                void LoadImage ()
 
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                {
 
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                        if (image != null) {
 
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                                if (hover)
 
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                                        imageWidget.Pixbuf = image;
 
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                                else
 
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                                        imageWidget.Pixbuf = inactiveImage;
 
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                        } else {
 
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                                imageWidget.Pixbuf = null;
 
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                        }
 
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                }
 
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                protected override bool OnEnterNotifyEvent (Gdk.EventCrossing evnt)
 
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                {
 
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                        hover = true;
 
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                        LoadImage ();
 
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                        return base.OnEnterNotifyEvent (evnt);
 
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                }
 
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                protected override bool OnLeaveNotifyEvent (Gdk.EventCrossing evnt)
 
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                {
 
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                        hover = false;
 
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                        LoadImage ();
 
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                        return base.OnLeaveNotifyEvent (evnt);
 
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                }
 
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                protected override bool OnButtonPressEvent (Gdk.EventButton evnt)
 
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                {
 
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                        pressed = image != null;
 
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                        return base.OnButtonPressEvent (evnt);
 
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                }
 
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                protected override bool OnButtonReleaseEvent (Gdk.EventButton evnt)
 
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                {
 
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                        if (pressed && evnt.Button == 1 && new Gdk.Rectangle (0, 0, Allocation.Width, Allocation.Height).Contains ((int)evnt.X, (int)evnt.Y)) {
 
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                                hover = false;
 
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                                LoadImage ();
 
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                                if (Clicked != null)
 
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                                        Clicked (this, EventArgs.Empty);
 
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                                return true;
 
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                        }
 
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                        return base.OnButtonReleaseEvent (evnt);
 
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                }
 
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                public event EventHandler Clicked;
 
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        }
 
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}
 
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