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https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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388 lines
12 KiB
C#
388 lines
12 KiB
C#
#region ================== Copyright (c) 2015 MaxED
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// Parts of the code are based on "Collapsible Splitter control in C#" by Furty
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// http://www.codeproject.com/Articles/3025/Collapsible-Splitter-control-in-C
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#endregion
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#region ================== Namespaces
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Reflection;
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using System.Windows.Forms;
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#endregion
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namespace CodeImp.DoomBuilder.Controls
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{
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[Designer("System.Windows.Forms.Design.SplitContainerDesigner, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
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public class CollapsibleSplitContainer : SplitContainer, ISupportInitialize
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{
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#region ================== Private Properties
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// Declare and define some base properties
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private bool hot;
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private bool collapsed;
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private readonly Color hotcolor = CalculateColor(SystemColors.Highlight, SystemColors.Window, 70);
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private Rectangle bounds;
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// Storesome settings
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private int storedpanel1minsize;
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private int storedpanel2minsize;
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private int storedsplitterdistance;
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#endregion
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#region ================== Public Properties
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[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public bool IsCollapsed
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{
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get { return collapsed; }
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set { collapsed = value; ToggleSplitter(); }
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}
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[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public int SplitPosition
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{
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get { return GetSplitPosition(); }
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set { storedsplitterdistance = value; if(!IsCollapsed) ToggleSplitter(); }
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}
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[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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private new int SplitterWidth
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{
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get { return base.SplitterWidth; }
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set { base.SplitterWidth = value; }
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}
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#endregion
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#region ================== Constructor
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public CollapsibleSplitContainer()
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{
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// Register mouse events
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this.Click += OnClick;
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this.Resize += OnResize;
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this.MouseLeave += OnMouseLeave;
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this.MouseMove += OnMouseMove;
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this.MouseUp += OnMouseUp;
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//mxd. Set drawing style
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const ControlStyles cs = ControlStyles.ResizeRedraw | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer;
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this.SetStyle(cs, true);
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object[] args = new object[] { cs, true };
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MethodInfo objMethodInfo = typeof(Control).GetMethod("SetStyle", BindingFlags.NonPublic | BindingFlags.Instance);
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objMethodInfo.Invoke(this.Panel1, args);
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objMethodInfo.Invoke(this.Panel2, args);
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// Force the width to 8px so that everything always draws correctly
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this.SplitterWidth = 8;
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}
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#endregion
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#region ================== Event Handlers
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protected override void OnMouseDown(MouseEventArgs e)
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{
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// if the hider control isn't hot, let the base resize action occur
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if(!this.hot && this.Panel1.Visible && this.Panel2.Visible) base.OnMouseDown(e);
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}
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private void OnResize(object sender, EventArgs e)
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{
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this.Invalidate();
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}
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private void OnMouseMove(object sender, MouseEventArgs e)
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{
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// check to see if the mouse cursor position is within the bounds of our control
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if(bounds.Contains(e.Location))
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{
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if(!this.hot)
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{
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this.hot = true;
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this.Cursor = Cursors.Hand;
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this.Invalidate();
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}
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}
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else
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{
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if(this.hot)
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{
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this.hot = false;
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this.Invalidate();
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}
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this.Cursor = Cursors.Default;
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}
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}
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private void OnMouseLeave(object sender, EventArgs e)
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{
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// ensure that the hot state is removed
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this.hot = false;
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this.Invalidate();
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}
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// User may've moved the splitter...
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private void OnMouseUp(object sender, MouseEventArgs mouseEventArgs)
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{
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if(!collapsed) storedsplitterdistance = GetSplitPosition();
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}
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private void OnClick(object sender, EventArgs e)
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{
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if(FixedPanel != FixedPanel.None && hot)
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{
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collapsed = !collapsed;
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ToggleSplitter();
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this.Invalidate();
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}
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}
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#endregion
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#region ================== Paint
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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if(FixedPanel == FixedPanel.None) return;
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// find the rectangle for the splitter and paint it
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Rectangle r = this.SplitterRectangle;
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e.Graphics.FillRectangle(new SolidBrush(this.BackColor), r);
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Pen penlightlight = new Pen(SystemColors.ControlLightLight);
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Pen pendark = new Pen(SystemColors.ControlDark);
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SolidBrush brushdarkdark = new SolidBrush(SystemColors.ControlDarkDark);
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// Check the docking style and create the control rectangle accordingly
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if(this.Orientation == Orientation.Vertical)
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{
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// create a new rectangle in the vertical center of the splitter for our collapse control button
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bounds = new Rectangle(r.X, r.Y + ((r.Height - 115) / 2), 8, 115);
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// draw the background color for our control image
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e.Graphics.FillRectangle(new SolidBrush(hot ? hotcolor : this.BackColor), new Rectangle(bounds.X + 1, bounds.Y, 6, 115));
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// draw the top & bottom lines for our control image
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e.Graphics.DrawLine(pendark, bounds.X + 1, bounds.Y, bounds.X + bounds.Width - 2, bounds.Y);
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e.Graphics.DrawLine(pendark, bounds.X + 1, bounds.Y + bounds.Height, bounds.X + bounds.Width - 2, bounds.Y + bounds.Height);
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if(this.Enabled)
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{
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// draw the arrows for our control image
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// the ArrowPointArray is a point array that defines an arrow shaped polygon
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e.Graphics.FillPolygon(brushdarkdark, ArrowPointArray(bounds.X + 2, bounds.Y + 3));
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e.Graphics.FillPolygon(brushdarkdark, ArrowPointArray(bounds.X + 2, bounds.Y + bounds.Height - 9));
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}
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// draw the dots for our control image using a loop
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int x = bounds.X + 3;
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int y = bounds.Y + 14;
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for(int i = 0; i < 30; i++)
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{
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// light dot
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e.Graphics.DrawRectangle(penlightlight, x, y + 1 + (i * 3), 1, 1);
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// dark dot
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e.Graphics.DrawRectangle(pendark, x - 1, y + (i * 3), 1, 1);
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i++;
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// light dot
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e.Graphics.DrawRectangle(penlightlight, x + 2, y + 1 + (i * 3), 1, 1);
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// dark dot
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e.Graphics.DrawRectangle(pendark, x + 1, y + (i * 3), 1, 1);
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}
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}
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else // Should be Orientation.Horizontal
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{
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// create a new rectangle in the horizontal center of the splitter for our collapse control button
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bounds = new Rectangle(r.X + ((r.Width - 115) / 2), r.Y, 115, 8);
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// draw the background color for our control image
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e.Graphics.FillRectangle(new SolidBrush(hot ? hotcolor : this.BackColor), new Rectangle(bounds.X, bounds.Y + 1, 115, 6));
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// draw the left & right lines for our control image
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e.Graphics.DrawLine(pendark, bounds.X, bounds.Y + 1, bounds.X, bounds.Y + bounds.Height - 2);
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e.Graphics.DrawLine(pendark, bounds.X + bounds.Width, bounds.Y + 1, bounds.X + bounds.Width, bounds.Y + bounds.Height - 2);
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if(this.Enabled)
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{
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// draw the arrows for our control image
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// the ArrowPointArray is a point array that defines an arrow shaped polygon
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e.Graphics.FillPolygon(brushdarkdark, ArrowPointArray(bounds.X + 3, bounds.Y + 2));
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e.Graphics.FillPolygon(brushdarkdark, ArrowPointArray(bounds.X + bounds.Width - 9, bounds.Y + 2));
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}
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// draw the dots for our control image using a loop
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int x = bounds.X + 14;
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int y = bounds.Y + 3;
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for(int i = 0; i < 30; i++)
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{
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// light dot
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e.Graphics.DrawRectangle(penlightlight, x + 1 + (i * 3), y, 1, 1);
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// dark dot
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e.Graphics.DrawRectangle(pendark, x + (i * 3), y - 1, 1, 1);
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i++;
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// light dot
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e.Graphics.DrawRectangle(penlightlight, x + 1 + (i * 3), y + 2, 1, 1);
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// dark dot
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e.Graphics.DrawRectangle(pendark, x + (i * 3), y + 1, 1, 1);
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}
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}
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}
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#endregion
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#region ================== Helper methods
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private void ToggleSplitter()
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{
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//mxd. Toggle visibility
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switch(FixedPanel)
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{
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case FixedPanel.Panel1:
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Panel1.Visible = !collapsed;
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if(collapsed)
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{
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storedsplitterdistance = SplitterDistance;
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storedpanel1minsize = Panel1MinSize;
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Panel1MinSize = 0;
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SplitterDistance = 0;
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}
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else
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{
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Panel1MinSize = storedpanel1minsize;
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SplitterDistance = Math.Min(this.Width, storedsplitterdistance);
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}
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break;
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case FixedPanel.Panel2:
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Panel2.Visible = !collapsed;
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if(collapsed)
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{
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storedpanel2minsize = Panel2MinSize;
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Panel2MinSize = 0;
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}
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else
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{
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Panel2MinSize = storedpanel2minsize;
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}
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if(Orientation == Orientation.Vertical)
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{
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if(collapsed) storedsplitterdistance = this.Width - SplitterDistance;
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SplitterDistance = (collapsed ? this.Width : Math.Max(0, this.Width - storedsplitterdistance));
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}
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else
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{
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if(collapsed) storedsplitterdistance = this.Height - SplitterDistance;
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SplitterDistance = (collapsed ? this.Height : Math.Max(0, this.Height - storedsplitterdistance));
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}
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break;
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}
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}
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private int GetSplitPosition()
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{
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switch(FixedPanel)
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{
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case FixedPanel.Panel1:
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return (Panel1.Visible ? SplitterDistance : storedsplitterdistance);
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case FixedPanel.Panel2:
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if(Panel2.Visible)
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{
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if(Orientation == Orientation.Vertical)
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return Math.Max(0, this.Width - SplitterDistance);
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else
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return Math.Max(0, this.Height - SplitterDistance);
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}
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else
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{
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return storedsplitterdistance;
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}
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}
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return SplitterDistance;
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}
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// This creates a point array to draw a arrow-like polygon
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private Point[] ArrowPointArray(int x, int y)
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{
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Point[] points = new Point[3];
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// Right or left arrows
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if(Orientation == Orientation.Vertical)
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{
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if((FixedPanel == FixedPanel.Panel2 && Panel2.Visible) || (FixedPanel == FixedPanel.Panel1 && !Panel1.Visible)) // Right arrow
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{
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points[0] = new Point(x, y);
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points[1] = new Point(x + 3, y + 3);
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points[2] = new Point(x, y + 6);
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}
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else // Left arrow
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{
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points[0] = new Point(x + 3, y);
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points[1] = new Point(x, y + 3);
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points[2] = new Point(x + 3, y + 6);
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}
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}
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else // Up or down arrows
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{
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if((FixedPanel == FixedPanel.Panel2 && Panel2.Visible) || (FixedPanel == FixedPanel.Panel1 && !Panel1.Visible)) // Down arrow
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{
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points[0] = new Point(x, y);
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points[1] = new Point(x + 6, y);
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points[2] = new Point(x + 3, y + 3);
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}
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else // Up arrow
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{
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points[0] = new Point(x + 3, y);
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points[1] = new Point(x + 6, y + 4);
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points[2] = new Point(x, y + 4);
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}
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}
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return points;
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}
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// this method was borrowed from the RichUI Control library by Sajith M
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private static Color CalculateColor(Color front, Color back, int alpha)
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{
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// solid color obtained as a result of alpha-blending
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Color frontColor = Color.FromArgb(255, front);
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Color backColor = Color.FromArgb(255, back);
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float frontRed = frontColor.R;
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float frontGreen = frontColor.G;
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float frontBlue = frontColor.B;
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float backRed = backColor.R;
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float backGreen = backColor.G;
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float backBlue = backColor.B;
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float fRed = frontRed * alpha / 255 + backRed * ((float)(255 - alpha) / 255);
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float fGreen = frontGreen * alpha / 255 + backGreen * ((float)(255 - alpha) / 255);
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float fBlue = frontBlue * alpha / 255 + backBlue * ((float)(255 - alpha) / 255);
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return Color.FromArgb(255, (byte)fRed, (byte)fGreen, (byte)fBlue);
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}
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// ISupportInitialize methods. Not needed for .Net 4 and higher
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public void BeginInit() { }
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public void EndInit() { }
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#endregion
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}
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}
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