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-rw-r--r--src/GraphicObjects/GenericStack.cs246
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diff --git a/src/GraphicObjects/GenericStack.cs b/src/GraphicObjects/GenericStack.cs
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-//
-// GenericStack.cs
-//
-// Author:
-// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
-//
-// Copyright (c) 2013-2017 Jean-Philippe Bruyère
-//
-// 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.ComponentModel;
-using System.Diagnostics;
-using System.Xml.Serialization;
-using System;
-using System.Linq;
-
-namespace Crow
-{
- /// <summary>
- /// group container that stacked its children horizontally or vertically
- /// </summary>
- public class GenericStack : Group
- {
- #region CTOR
- protected GenericStack() : base(){}
- public GenericStack(Interface iface) : base(iface){}
- #endregion
-
- #region Private fields
- int _spacing;
- Orientation _orientation;
- #endregion
-
- #region Public Properties
- [XmlAttributeAttribute()][DefaultValue(2)]
- public int Spacing
- {
- get { return _spacing; }
- set {
- if (_spacing == value)
- return;
- _spacing = value;
- NotifyValueChanged ("Spacing", Spacing);
- RegisterForLayouting (LayoutingType.Sizing|LayoutingType.ArrangeChildren);
- }
- }
- [XmlAttributeAttribute()][DefaultValue(Orientation.Horizontal)]
- public virtual Orientation Orientation
- {
- get { return _orientation; }
- set { _orientation = value; }
- }
- #endregion
-
- #region GraphicObject Overrides
- public override bool ArrangeChildren { get { return true; } }
- public override void ChildrenLayoutingConstraints (ref LayoutingType layoutType)
- {
- //Prevent child repositionning in the direction of stacking
- if (Orientation == Orientation.Horizontal)
- layoutType &= (~LayoutingType.X);
- else
- layoutType &= (~LayoutingType.Y);
- }
- protected override int measureRawSize (LayoutingType lt)
- {
- int totSpace = Math.Max(0, Spacing * (Children.Count (c => c.Visible) - 1));
- if (lt == LayoutingType.Width) {
- if (Orientation == Orientation.Horizontal)
- return contentSize.Width + totSpace + 2 * Margin;
- }else if (Orientation == Orientation.Vertical)
- return contentSize.Height + totSpace + 2 * Margin;
-
- return base.measureRawSize (lt);
- }
- public virtual void ComputeChildrenPositions()
- {
- int d = 0;
- if (Orientation == Orientation.Horizontal) {
- foreach (GraphicObject c in Children) {
- if (!c.Visible)
- continue;
- c.Slot.X = d;
- d += c.Slot.Width + Spacing;
- }
- } else {
- foreach (GraphicObject c in Children) {
- if (!c.Visible)
- continue;
- c.Slot.Y = d;
- d += c.Slot.Height + Spacing;
- }
- }
- IsDirty = true;
- }
- GraphicObject stretchedGO = null;
- public override bool UpdateLayout (LayoutingType layoutType)
- {
- RegisteredLayoutings &= (~layoutType);
-
- if (layoutType == LayoutingType.ArrangeChildren) {
- //allow 1 child to have size to 0 if stack has fixed or streched size policy,
- //this child will occupy remaining space
- //if stack size policy is Fit, no child may have stretch enabled
- //in the direction of stacking.
- ComputeChildrenPositions ();
-
- //if no layouting remains in queue for item, registre for redraw
- if (RegisteredLayoutings == LayoutingType.None && IsDirty)
- IFace.EnqueueForRepaint (this);
-
- return true;
- }
-
- return base.UpdateLayout(layoutType);
- }
-
- void adjustStretchedGo (LayoutingType lt){
- if (stretchedGO == null)
- return;
- if (lt == LayoutingType.Width) {
- int newW = Math.Max (
- this.ClientRectangle.Width - contentSize.Width - Spacing * (Children.Count - 1),
- stretchedGO.MinimumSize.Width);
- if (stretchedGO.MaximumSize.Width > 0)
- newW = Math.Min (newW, stretchedGO.MaximumSize.Width);
- if (newW != stretchedGO.Slot.Width) {
- stretchedGO.Slot.Width = newW;
- stretchedGO.IsDirty = true;
- #if DEBUG_LAYOUTING
- Debug.WriteLine ("\tAdjusting Width of " + stretchedGO.ToString());
- #endif
- stretchedGO.LayoutChanged -= OnChildLayoutChanges;
- stretchedGO.OnLayoutChanges (LayoutingType.Width);
- stretchedGO.LayoutChanged += OnChildLayoutChanges;
- stretchedGO.LastSlots.Width = stretchedGO.Slot.Width;
- }
- } else {
- int newH = Math.Max (
- this.ClientRectangle.Height - contentSize.Height - Spacing * (Children.Count - 1),
- stretchedGO.MinimumSize.Height);
- if (stretchedGO.MaximumSize.Height > 0)
- newH = Math.Min (newH, stretchedGO.MaximumSize.Height);
- if (newH != stretchedGO.Slot.Height) {
- stretchedGO.Slot.Height = newH;
- stretchedGO.IsDirty = true;
- #if DEBUG_LAYOUTING
- Debug.WriteLine ("\tAdjusting Height of " + stretchedGO.ToString());
- #endif
- stretchedGO.LayoutChanged -= OnChildLayoutChanges;
- stretchedGO.OnLayoutChanges (LayoutingType.Height);
- stretchedGO.LayoutChanged += OnChildLayoutChanges;
- stretchedGO.LastSlots.Height = stretchedGO.Slot.Height;
- }
- }
- }
-
- public override void OnChildLayoutChanges (object sender, LayoutingEventArgs arg)
- {
- GraphicObject go = sender as GraphicObject;
- //Debug.WriteLine ("child layout change: " + go.LastSlots.ToString() + " => " + go.Slot.ToString());
- switch (arg.LayoutType) {
- case LayoutingType.Width:
- if (Orientation == Orientation.Horizontal) {
- if (go.Width == Measure.Stretched) {
- if (stretchedGO == null && Width != Measure.Fit)
- stretchedGO = go;
- else if (stretchedGO != go) {
- go.Slot.Width = 0;
- go.Width = Measure.Fit;
- return;
- }
- } else
- contentSize.Width += go.Slot.Width - go.LastSlots.Width;
-
- adjustStretchedGo (LayoutingType.Width);
-
- if (Width == Measure.Fit)
- this.RegisterForLayouting (LayoutingType.Width);
-
- this.RegisterForLayouting (LayoutingType.ArrangeChildren);
- return;
- }
- break;
- case LayoutingType.Height:
- if (Orientation == Orientation.Vertical) {
- if (go.Height == Measure.Stretched) {
- if (stretchedGO == null && Height != Measure.Fit)
- stretchedGO = go;
- else if (stretchedGO != go){
- go.Slot.Height = 0;
- go.Height = Measure.Fit;
- return;
- }
- } else
- contentSize.Height += go.Slot.Height - go.LastSlots.Height;
-
- adjustStretchedGo (LayoutingType.Height);
-
- if (Height == Measure.Fit)
- this.RegisterForLayouting (LayoutingType.Height);
-
- this.RegisterForLayouting (LayoutingType.ArrangeChildren);
- return;
- }
- break;
- }
- base.OnChildLayoutChanges (sender, arg);
- }
- #endregion
-
- public override void RemoveChild (GraphicObject child)
- {
- if (child != stretchedGO) {
- if (Orientation == Orientation.Horizontal)
- contentSize.Width -= child.LastSlots.Width;
- else
- contentSize.Height -= child.LastSlots.Height;
- }
- base.RemoveChild (child);
- if (child == stretchedGO) {
- stretchedGO = null;
- RegisterForLayouting (LayoutingType.Sizing);
- }else if (Orientation == Orientation.Horizontal)
- adjustStretchedGo (LayoutingType.Width);
- else
- adjustStretchedGo (LayoutingType.Height);
- }
- }
-}
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