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