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//
// ImageView.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2013 Xamarin Inc.
//
// 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 Gdk;
namespace MonoDevelop.Components
{
public class ImageView: Gtk.DrawingArea
{
Xwt.Drawing.Image image;
public ImageView ()
{
WidgetFlags |= Gtk.WidgetFlags.AppPaintable | Gtk.WidgetFlags.NoWindow;
}
public ImageView (Xwt.Drawing.Image image): this ()
{
this.image = image;
}
public Xwt.Drawing.Image Image {
get { return image; }
set {
image = value;
QueueDraw ();
QueueResize ();
}
}
float xalign = 0.5f;
public float Xalign {
get { return xalign; }
set {
xalign = (float)(value * IconScale);
QueueDraw ();
}
}
float yalign = 0.5f;
public float Yalign {
get { return yalign; }
set {
yalign = (float)(value * IconScale);
QueueDraw ();
}
}
double IconScale {
get { return GtkWorkarounds.GetPixelScale (); }
}
protected override void OnSizeRequested (ref Gtk.Requisition requisition)
{
if (image != null) {
requisition.Width = (int)(image.Width * IconScale);
requisition.Height = (int)(image.Height * IconScale);
}
}
protected override bool OnExposeEvent (Gdk.EventExpose evnt)
{
if (image != null) {
using (var ctx = CairoHelper.Create (evnt.Window)) {
var x = Math.Round (Allocation.X + (Allocation.Width - image.Width * IconScale) * Xalign);
var y = Math.Round (Allocation.Y + (Allocation.Height - image.Height * IconScale) * Yalign);
ctx.Save ();
ctx.Scale (IconScale, IconScale);
ctx.DrawImage (this, image, x / IconScale, y / IconScale);
ctx.Restore ();
}
}
return true;
}
}
}
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