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//
// TabView.cs
//
// Author:
// Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// Copyright (c) 2016 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Xml.Serialization;
using System.ComponentModel;
using Cairo;
using System.Diagnostics;
namespace Crow
{
public class TabView : Group
{
#region CTOR
public TabView () : base() {}
#endregion
#region Private fields
int _spacing;
Measure tabThickness;
Orientation _orientation;
int selectedTab = 0;
#endregion
#region public properties
[XmlAttributeAttribute()][DefaultValue(Orientation.Horizontal)]
public virtual Orientation Orientation
{
get { return _orientation; }
set {
if (_orientation == value)
return;
_orientation = value;
NotifyValueChanged ("Orientation", _orientation);
if (_orientation == Orientation.Horizontal)
NotifyValueChanged ("TabOrientation", Orientation.Vertical);
else
NotifyValueChanged ("TabOrientation", Orientation.Horizontal);
}
}
[XmlAttributeAttribute()][DefaultValue(16)]
public int Spacing
{
get { return _spacing; }
set {
if (_spacing == value)
return;
_spacing = value;
NotifyValueChanged ("Spacing", Spacing);
}
}
[XmlAttributeAttribute()][DefaultValue(0)]
public virtual int SelectedTab {
get { return selectedTab; }
set {
if (selectedTab < Children.Count && SelectedTab >= 0)
(Children [selectedTab] as TabItem).IsSelected = false;
selectedTab = value;
if (selectedTab < Children.Count && SelectedTab >= 0)
(Children [selectedTab] as TabItem).IsSelected = true;
NotifyValueChanged ("SelectedTab", selectedTab);
RegisterForRedraw ();
}
}
#endregion
public override void AddChild (GraphicObject child)
{
TabItem ti = child as TabItem;
if (ti == null)
throw new Exception ("TabView control accept only TabItem as child.");
ti.MouseDown += Ti_MouseDown;
if (Children.Count == 0) {
ti.IsSelected = true;
SelectedTab = 0;
}
base.AddChild (child);
}
public override void RemoveChild (GraphicObject child)
{
base.RemoveChild (child);
if (selectedTab > Children.Count - 1)
SelectedTab--;
else
SelectedTab = selectedTab;
}
public override bool ArrangeChildren { get { return true; } }
public override bool UpdateLayout (LayoutingType layoutType)
{
RegisteredLayoutings &= (~layoutType);
if (layoutType == LayoutingType.ArrangeChildren) {
int curOffset = Spacing;
for (int i = 0; i < Children.Count; i++) {
if (!Children [i].Visible)
continue;
TabItem ti = Children [i] as TabItem;
ti.TabOffset = curOffset;
if (Orientation == Orientation.Horizontal) {
if (ti.TabTitle.RegisteredLayoutings.HasFlag (LayoutingType.Width))
return false;
curOffset += ti.TabTitle.Slot.Width + Spacing;
} else {
if (ti.TabTitle.RegisteredLayoutings.HasFlag (LayoutingType.Height))
return false;
curOffset += ti.TabTitle.Slot.Height + Spacing;
}
}
//if no layouting remains in queue for item, registre for redraw
if (RegisteredLayoutings == LayoutingType.None && IsDirty)
CurrentInterface.EnqueueForRepaint (this);
return true;
}
return base.UpdateLayout(layoutType);
}
protected override void onDraw (Context gr)
{
Rectangle rBack = new Rectangle (Slot.Size);
Background.SetAsSource (gr, rBack);
CairoHelpers.CairoRectangle(gr,rBack, CornerRadius);
gr.Fill ();
gr.Save ();
if (ClipToClientRect) {
//clip to client zone
CairoHelpers.CairoRectangle (gr, ClientRectangle, CornerRadius);
gr.Clip ();
}
for (int i = 0; i < Children.Count; i++) {
if (i == SelectedTab)
continue;
Children [i].Paint (ref gr);
}
if (SelectedTab < Children.Count && SelectedTab >= 0)
Children [SelectedTab].Paint (ref gr);
gr.Restore ();
}
#region Mouse handling
public override void checkHoverWidget (MouseMoveEventArgs e)
{
if (CurrentInterface.HoverWidget != this) {
CurrentInterface.HoverWidget = this;
onMouseEnter (this, e);
}
if (SelectedTab > Children.Count - 1)
return;
if (((Children[SelectedTab] as TabItem).Content.Parent as GraphicObject).MouseIsIn(e.Position))
{
Children[SelectedTab].checkHoverWidget (e);
return;
}
for (int i = Children.Count - 1; i >= 0; i--) {
TabItem ti = Children [i] as TabItem;
if (ti.TabTitle.MouseIsIn(e.Position))
{
Children[i].checkHoverWidget (e);
return;
}
}
}
#endregion
void Ti_MouseDown (object sender, MouseButtonEventArgs e)
{
SelectedTab = Children.IndexOf (sender as GraphicObject);
}
}
}
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