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//
// FrameBackend.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2011 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 Xwt.Backends;
using Xwt.Drawing;
namespace Xwt.GtkBackend
{
public class FrameBackend: WidgetBackend, IFrameBackend
{
Gtk.Alignment paddingAlign;
string label;
Color? borderColor;
public FrameBackend ()
{
Widget = new Gtk.Frame ();
Widget.Show ();
}
protected new Gtk.Bin Widget {
get { return (Gtk.Bin)base.Widget; }
set { base.Widget = value; }
}
protected new IFrameEventSink EventSink {
get { return (IFrameEventSink)base.EventSink; }
}
#region IFrameBackend implementation
public void SetContent (IWidgetBackend child)
{
Gtk.Bin parent = paddingAlign != null ? paddingAlign : Widget;
if (parent.Child != null) {
RemoveChildPlacement (parent.Child);
parent.Remove (parent.Child);
}
if (child != null) {
var w = GetWidgetWithPlacement (child);
parent.Child = w;
} else {
parent.Child = null;
}
}
public void SetFrameType (FrameType type)
{
Frame f = (Frame) Frontend;
switch (type) {
case FrameType.Custom:
if (!(Widget is HeaderBox)) {
HeaderBox box = new HeaderBox ();
box.Show ();
box.BackgroundColor = UsingCustomBackgroundColor ? (Color?)BackgroundColor : null;
#pragma warning disable CS0618 // Type or member is obsolete
box.SetMargins ((int)f.BorderWidthTop, (int)f.BorderWidthBottom, (int)f.BorderWidthLeft, (int)f.BorderWidthRight);
#pragma warning restore CS0618 // Type or member is obsolete
box.SetPadding ((int)f.Padding.Top, (int)f.Padding.Bottom, (int)f.Padding.Left, (int)f.Padding.Right);
if (borderColor != null)
box.SetBorderColor (borderColor.Value);
var c = paddingAlign != null ? paddingAlign.Child : Widget.Child;
if (c != null) {
((Gtk.Container)c.Parent).Remove (c);
box.Add (c);
}
Widget = box;
if (paddingAlign != null) {
paddingAlign.Destroy ();
paddingAlign = null;
}
}
break;
case FrameType.WidgetBox:
if (!(Widget is Gtk.Frame)) {
var c = Widget.Child;
if (c != null)
Widget.Remove (c);
Gtk.Frame gf = new Gtk.Frame ();
if (!string.IsNullOrEmpty (label))
gf.Label = label;
if (f.Padding.HorizontalSpacing != 0 || f.Padding.VerticalSpacing != 0) {
paddingAlign = new Gtk.Alignment (0, 0, 1, 1);
paddingAlign.Show ();
UreatePaddingAlign (f.Padding.Top, f.Padding.Bottom, f.Padding.Left, f.Padding.Right);
if (c != null)
paddingAlign.Add (c);
gf.Add (paddingAlign);
} else {
if (c != null)
gf.Add (c);
}
gf.Show ();
Widget = gf;
}
break;
}
}
void UreatePaddingAlign (double top, double bottom, double left, double right)
{
paddingAlign.TopPadding = (uint) top;
paddingAlign.BottomPadding = (uint) bottom;
paddingAlign.LeftPadding = (uint) left;
paddingAlign.RightPadding = (uint) right;
}
public void SetBorderSize (double left, double right, double top, double bottom)
{
HeaderBox hb = Widget as HeaderBox;
if (hb != null) {
hb.SetMargins ((int)top, (int)bottom, (int)left, (int)right);
}
}
public void SetPadding (double left, double right, double top, double bottom)
{
if (Widget is HeaderBox) {
HeaderBox hb = (HeaderBox) Widget;
hb.SetPadding ((int)top, (int)bottom, (int)left, (int)right);
return;
}
if (left == 0 && right == 0 && top == 0 && bottom == 0 && paddingAlign == null)
return;
if (paddingAlign == null) {
paddingAlign = new Gtk.Alignment (0, 0, 1, 1);
paddingAlign.Show ();
var c = Widget.Child;
if (c != null) {
Widget.Remove (c);
paddingAlign.Add (c);
}
Widget.Add (paddingAlign);
}
UreatePaddingAlign (top, bottom, left, right);
}
public Color BorderColor {
get {
if (borderColor == null)
return Widget.Style.Dark (Gtk.StateType.Normal).ToXwtValue ();
else
return borderColor.Value;
}
set {
borderColor = value;
HeaderBox hb = Widget as HeaderBox;
if (hb != null)
hb.SetBorderColor (value);
}
}
public override Color BackgroundColor {
get {
return base.BackgroundColor;
}
set {
base.BackgroundColor = value;
if (Widget is HeaderBox) {
((HeaderBox)Widget).BackgroundColor = value;
}
}
}
public string Label {
get {
return label;
}
set {
label = value;
if (Widget is Gtk.Frame)
((Gtk.Frame)Widget).Label = value;
}
}
#endregion
}
class FrameWidget: Gtk.Frame, IConstraintProvider
{
#if !XWT_GTK3
protected override void OnSizeRequested (ref Gtk.Requisition requisition)
{
base.OnSizeRequested (ref requisition);
}
#endif
public void GetConstraints (Gtk.Widget target, out SizeConstraint width, out SizeConstraint height)
{
width = height = SizeConstraint.Unconstrained;
}
}
public interface IConstraintProvider
{
void GetConstraints (Gtk.Widget target, out SizeConstraint width, out SizeConstraint height);
}
}
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