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//
// RoundedFrame.cs
//
// Authors:
// Aaron Bockover <abockover@novell.com>
// Gabriel Burt <gburt@novell.com>
//
// Copyright (C) 2008 Novell, 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 Gtk;
using Cairo;
using MonoDevelop.Components.Theming;
namespace MonoDevelop.Components
{
public class RoundedFrame : Bin
{
private Theme theme;
protected Theme Theme {
get { return theme; }
}
private int frame_width = 3;
private Widget child;
private Gdk.Rectangle child_allocation;
private bool fill_color_set;
private Cairo.Color fill_color;
private bool draw_border = true;
private Pattern fill_pattern;
// Ugh, this is to avoid the GLib.MissingIntPtrCtorException seen by some; BGO #552169
protected RoundedFrame (IntPtr ptr) : base(ptr)
{
}
public RoundedFrame ()
{
this.Events = Gdk.EventMask.AllEventsMask;
this.WidgetFlags |= WidgetFlags.NoWindow;
DoubleBuffered = true;
AppPaintable = false;
}
public void SetFillColor (Cairo.Color color)
{
this.ModifyBase (Gtk.StateType.Normal, CairoExtensions.CairoColorToGdkColor (color));
this.ModifyBg (Gtk.StateType.Normal, CairoExtensions.CairoColorToGdkColor (color));
fill_color = color;
fill_color_set = true;
QueueDraw ();
}
public void UnsetFillColor ()
{
fill_color_set = false;
QueueDraw ();
}
public Pattern FillPattern {
get { return fill_pattern; }
set {
fill_pattern = value;
QueueDraw ();
}
}
public bool DrawBorder {
get { return draw_border; }
set {
draw_border = value;
QueueDraw ();
}
}
#region Gtk.Widget Overrides
protected override void OnRealized ()
{
base.OnRealized ();
theme = MonoDevelop.Components.Theming.ThemeEngine.CreateTheme (this);
}
protected override void OnSizeRequested (ref Requisition requisition)
{
if (child != null && child.Visible) {
// Add the child's width/height
Requisition child_requisition = child.SizeRequest ();
requisition.Width = Math.Max (0, child_requisition.Width);
requisition.Height = child_requisition.Height;
} else {
requisition.Width = 0;
requisition.Height = 0;
}
// Add the frame border
requisition.Width += ((int)BorderWidth + frame_width) * 2;
requisition.Height += ((int)BorderWidth + frame_width) * 2;
}
protected override void OnSizeAllocated (Gdk.Rectangle allocation)
{
base.OnSizeAllocated (child_allocation);
if (child == null || !child.Visible)
return;
int border = (int)BorderWidth + frame_width;
child_allocation = new Gdk.Rectangle (allocation.X + border,
allocation.Y + border,
(int)Math.Max (1, allocation.Width - border * 2),
(int)Math.Max (1, allocation.Height - border * 2));
child.SizeAllocate (child_allocation);
}
protected override void OnSetScrollAdjustments (Adjustment hadj, Adjustment vadj)
{
// This is to satisfy the gtk_widget_set_scroll_adjustments
// inside of GtkScrolledWindow so it doesn't complain about
// its child not being scrollable.
}
protected override bool OnExposeEvent (Gdk.EventExpose evnt)
{
if (!IsDrawable) {
return false;
}
Cairo.Context cr = Gdk.CairoHelper.Create (evnt.Window);
try {
DrawFrame (cr, evnt.Area);
if (child != null)
PropagateExpose (child, evnt);
return false;
} finally {
((IDisposable)cr.Target).Dispose ();
((IDisposable)cr).Dispose ();
}
}
private void DrawFrame (Cairo.Context cr, Gdk.Rectangle clip)
{
int x = child_allocation.X - frame_width;
int y = child_allocation.Y - 2 * frame_width - 1;
int width = child_allocation.Width + 2 * frame_width;
int height = child_allocation.Height + 3 * frame_width;
Gdk.Rectangle rect = new Gdk.Rectangle (x, y, width, height);
theme.Context.ShowStroke = draw_border;
if (fill_color_set) {
theme.DrawFrameBackground (cr, rect, fill_color);
theme.DrawFrameBorder (cr, rect);
} else if (fill_pattern != null) {
theme.DrawFrameBackground (cr, rect, fill_pattern);
} else {
theme.DrawFrameBackground (cr, rect, true);
theme.DrawFrameBorder (cr, rect);
}
}
#endregion
#region Gtk.Container Overrides
protected override void OnAdded (Widget widget)
{
child = widget;
base.OnAdded (widget);
}
protected override void OnRemoved (Widget widget)
{
if (child == widget) {
child = null;
}
base.OnRemoved (widget);
}
#endregion
}
}
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