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-rw-r--r--src/GraphicObjects/PrivateContainer.cs237
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diff --git a/src/GraphicObjects/PrivateContainer.cs b/src/GraphicObjects/PrivateContainer.cs
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-//
-// PrivateContainer.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;
-using System.Xml.Serialization;
-using System.ComponentModel;
-using Cairo;
-
-namespace Crow
-{
- /// <summary>
- /// Implement drawing and layouting for a single child, but
- /// does not expose child to allow reuse of container
- /// behaviour for widgets that have other xml hierarchy: example
- /// TemplatedControl may have 3 children (template,templateItem,content) but
- /// behave exactely as a container for layouting and drawing
- /// </summary>
- [DesignIgnore]
- public class PrivateContainer : GraphicObject
- {
- #region CTOR
- protected PrivateContainer () : base(){}
- public PrivateContainer (Interface iface) : base(iface){}
- #endregion
-
- #if DESIGN_MODE
- public override bool FindByDesignID(string designID, out GraphicObject go){
- go = null;
- if (base.FindByDesignID (designID, out go))
- return true;
- return (bool)child?.FindByDesignID (designID, out go);
- }
- #endif
- protected GraphicObject child;
-
- protected virtual void SetChild(GraphicObject _child)
- {
-
- if (child != null) {
- //check if HoverWidget is removed from Tree
- if (IFace.HoverWidget != null) {
- if (this.Contains (IFace.HoverWidget))
- IFace.HoverWidget = null;
- }
- contentSize = default(Size);
- child.LayoutChanged -= OnChildLayoutChanges;
- this.RegisterForGraphicUpdate ();
- }
-
- child = _child as GraphicObject;
-
- if (child != null) {
- child.Parent = this;
- child.LayoutChanged += OnChildLayoutChanges;
- contentSize = child.Slot.Size;
- child.RegisteredLayoutings = LayoutingType.None;
- child.RegisterForLayouting (LayoutingType.Sizing);
- }
- }
- //dispose child if not null
- protected virtual void deleteChild () {
- GraphicObject g = child;
- SetChild (null);
- if (g != null)
- g.Dispose ();
- }
-
- #region GraphicObject Overrides
-
- public override GraphicObject FindByName (string nameToFind)
- {
- if (Name == nameToFind)
- return this;
-
- return child == null ? null : child.FindByName (nameToFind);
- }
- public override bool Contains (GraphicObject goToFind)
- {
- return child == goToFind ? true :
- child == null ? false : child.Contains(goToFind);
- }
- public override void OnDataSourceChanged (object sender, DataSourceChangeEventArgs e)
- {
- base.OnDataSourceChanged (this, e);
- if (child != null)
- if (child.localDataSourceIsNull & child.localLogicalParentIsNull)
- child.OnDataSourceChanged (child, e);
- }
- public override bool UpdateLayout (LayoutingType layoutType)
- {
- if (child != null) {
- //force sizing to fit if sizing on children and child has stretched size
- switch (layoutType) {
- case LayoutingType.Width:
- if (Width == Measure.Fit && child.Width.IsRelativeToParent)
- child.Width = Measure.Fit;
- break;
- case LayoutingType.Height:
- if (Height == Measure.Fit && child.Height.IsRelativeToParent)
- child.Height = Measure.Fit;
- break;
- }
- }
- return base.UpdateLayout (layoutType);
- }
- public override void OnLayoutChanges (LayoutingType layoutType)
- {
- base.OnLayoutChanges (layoutType);
-
- if (child == null)
- return;
-
- LayoutingType ltChild = LayoutingType.None;
-
- if (layoutType == LayoutingType.Width) {
- if (child.Width.IsRelativeToParent) {
- ltChild |= LayoutingType.Width;
- if (child.Width.Value < 100 && child.Left == 0)
- ltChild |= LayoutingType.X;
- } else if (child.Left == 0)
- ltChild |= LayoutingType.X;
- } else if (layoutType == LayoutingType.Height) {
- if (child.Height.IsRelativeToParent) {
- ltChild |= LayoutingType.Height;
- if (child.Height.Value < 100 && child.Top == 0)
- ltChild |= LayoutingType.Y;
- } else if (child.Top == 0)
- ltChild |= LayoutingType.Y;
- }
- if (ltChild == LayoutingType.None)
- return;
- child.RegisterForLayouting (ltChild);
- }
- public virtual void OnChildLayoutChanges (object sender, LayoutingEventArgs arg)
- {
- GraphicObject g = sender as GraphicObject;
-
- if (arg.LayoutType == LayoutingType.Width) {
- if (Width != Measure.Fit)
- return;
- contentSize.Width = g.Slot.Width;
- this.RegisterForLayouting (LayoutingType.Width);
- }else if (arg.LayoutType == LayoutingType.Height){
- if (Height != Measure.Fit)
- return;
- contentSize.Height = g.Slot.Height;
- this.RegisterForLayouting (LayoutingType.Height);
- }
- }
- protected override void onDraw (Context gr)
- {
- base.onDraw (gr);
-
- gr.Save ();
-
- if (ClipToClientRect) {
- //clip to client zone
- CairoHelpers.CairoRectangle (gr, ClientRectangle, CornerRadius);
- gr.Clip ();
- }
-
- if (child != null) {
- if (child.Visible)
- child.Paint (ref gr);
- }
- gr.Restore ();
- }
- protected override void UpdateCache (Context ctx)
- {
- Rectangle rb = Slot + Parent.ClientRectangle.Position;
-
-
- Context gr = new Context (bmp);
-
- if (!Clipping.IsEmpty) {
- for (int i = 0; i < Clipping.NumRectangles; i++)
- gr.Rectangle(Clipping.GetRectangle(i));
- gr.ClipPreserve();
- gr.Operator = Operator.Clear;
- gr.Fill();
- gr.Operator = Operator.Over;
-
- onDraw (gr);
- }
-
- gr.Dispose ();
-
- ctx.SetSourceSurface (bmp, rb.X, rb.Y);
- ctx.Paint ();
- Clipping.Dispose();
- Clipping = new Region ();
- }
- #endregion
-
- #region Mouse handling
- public override void checkHoverWidget (MouseMoveEventArgs e)
- {
- base.checkHoverWidget (e);
-
- if (child != null)
- if (child.MouseIsIn (e.Position))
- child.checkHoverWidget (e);
- }
- #endregion
-
- protected override void Dispose (bool disposing)
- {
- if (disposing && child != null)
- child.Dispose ();
- base.Dispose (disposing);
- }
- }
-}
-
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