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//
// Spliter.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;
namespace Crow
{
public class Splitter : GraphicObject
{
#region CTOR
public Splitter (): base(){}
#endregion
int thickness;
[XmlAttributeAttribute][DefaultValue(1)]
public virtual int Thickness {
get { return thickness; }
set {
if (thickness == value)
return;
thickness = value;
NotifyValueChanged ("Thickness", thickness);
RegisterForLayouting (LayoutingType.Sizing);
RegisterForGraphicUpdate ();
}
}
Unit u1, u2;
int init1 = -1, init2 = -1, delta = 0, min1, min2, max1 , max2;
GraphicObject go1 = null, go2 = null;
void initSplit(Measure m1, int size1, Measure m2, int size2){
if (m1 != Measure.Stretched) {
init1 = size1;
u1 = m1.Units;
}
if (m2 != Measure.Stretched) {
init2 = size2;
u2 = m2.Units;
}
}
void convertSizeInPix(GraphicObject g1){
}
#region GraphicObject override
public override GraphicObject Parent {
get { return base.Parent; }
set {
if (value != null) {
GenericStack gs = value as GenericStack;
if (gs == null)
throw new Exception ("Splitter may only be chil of stack");
}
base.Parent = value;
}
}
public override void onMouseEnter (object sender, MouseMoveEventArgs e)
{
base.onMouseEnter (sender, e);
if ((Parent as GenericStack).Orientation == Orientation.Horizontal)
CurrentInterface.MouseCursor = XCursor.H;
else
CurrentInterface.MouseCursor = XCursor.V;
}
public override void onMouseLeave (object sender, MouseMoveEventArgs e)
{
base.onMouseLeave (sender, e);
CurrentInterface.MouseCursor = XCursor.Default;
}
public override void onMouseDown (object sender, MouseButtonEventArgs e)
{
base.onMouseDown (sender, e);
go1 = go2 = null;
init1 = init2 = -1;
delta = 0;
GenericStack gs = Parent as GenericStack;
int ptrSplit = gs.Children.IndexOf (this);
if (ptrSplit == 0 || ptrSplit == gs.Children.Count - 1)
return;
go1 = gs.Children [ptrSplit - 1];
go2 = gs.Children [ptrSplit + 1];
if (gs.Orientation == Orientation.Horizontal) {
initSplit (go1.Width, go1.Slot.Width, go2.Width, go2.Slot.Width);
min1 = go1.MinimumSize.Width;
min2 = go2.MinimumSize.Width;
max1 = go1.MaximumSize.Width;
max2 = go2.MaximumSize.Width;
if (init1 >= 0)
go1.Width = init1;
if (init2 >= 0)
go2.Width = init2;
} else {
initSplit (go1.Height, go1.Slot.Height, go2.Height, go2.Slot.Height);
min1 = go1.MinimumSize.Height;
min2 = go2.MinimumSize.Height;
max1 = go1.MaximumSize.Height;
max2 = go2.MaximumSize.Height;
if (init1 >= 0)
go1.Height = init1;
if (init2 >= 0)
go2.Height = init2;
}
}
public override void onMouseMove (object sender, MouseMoveEventArgs e)
{
base.onMouseMove (sender, e);
if (!IsActive)
return;
GenericStack gs = Parent as GenericStack;
int newDelta = delta, size1 = init1 , size2 = init2;
if (gs.Orientation == Orientation.Horizontal) {
newDelta -= e.XDelta;
if (size1 < 0)
size1 = go1.Slot.Width + delta;
if (size2 < 0)
size2 = go2.Slot.Width - delta;
} else {
newDelta -= e.YDelta;
if (size1 < 0)
size1 = go1.Slot.Height + delta;
if (size2 < 0)
size2 = go2.Slot.Height - delta;
}
if (size1 - newDelta < min1 || (max1 > 0 && size1 - newDelta > max1) ||
size2 + newDelta < min2 || (max2 > 0 && size2 + newDelta > max2))
return;
delta = newDelta;
if (gs.Orientation == Orientation.Horizontal) {
if (init1 >= 0)
go1.Width = init1 - delta;
if (init2 >= 0)
go2.Width = init2 + delta;
} else {
if (init1 >= 0)
go1.Height = init1 - delta;
if (init2 >= 0)
go2.Height = init2 + delta;
}
}
public override void onMouseUp (object sender, MouseButtonEventArgs e)
{
base.onMouseUp (sender, e);
GenericStack gs = Parent as GenericStack;
if (init1 >= 0 && u1 == Unit.Percent) {
if (gs.Orientation == Orientation.Horizontal)
go1.Width = new Measure ((int)Math.Ceiling (
go1.Width.Value * 100.0 / (double)gs.Slot.Width), Unit.Percent);
else
go1.Height = new Measure ((int)Math.Ceiling (
go1.Height.Value * 100.0 / (double)gs.Slot.Height), Unit.Percent);
}
if (init2 >= 0 && u2 == Unit.Percent) {
if (gs.Orientation == Orientation.Horizontal)
go2.Width = new Measure ((int)Math.Floor (
go2.Width.Value * 100.0 / (double)gs.Slot.Width), Unit.Percent);
else
go2.Height = new Measure ((int)Math.Floor (
go2.Height.Value * 100.0 / (double)gs.Slot.Height), Unit.Percent);
}
}
public override bool UpdateLayout (LayoutingType layoutType)
{
GenericStack gs = Parent as GenericStack;
if (layoutType == LayoutingType.Width){
if (gs.Orientation == Orientation.Horizontal)
Width = thickness;
else
Width = Measure.Stretched;
} else if (layoutType == LayoutingType.Height){
if (gs.Orientation == Orientation.Vertical)
Height = thickness;
else
Height = Measure.Stretched;
}
return base.UpdateLayout (layoutType);
}
#endregion
}
}
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