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437 lines
14 KiB
C#
437 lines
14 KiB
C#
using System;
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using System.Collections;
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using System.Drawing;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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using System.Security.Permissions;
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using System.Diagnostics.CodeAnalysis;
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namespace Mesnac.Docking
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{
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public class FloatWindow : Form, INestedPanesContainer, IDockDragSource
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{
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private NestedPaneCollection m_nestedPanes;
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internal const int WM_CHECKDISPOSE = (int)(Win32.Msgs.WM_USER + 1);
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internal protected FloatWindow(DockPanel dockPanel, DockPane pane)
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{
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InternalConstruct(dockPanel, pane, false, Rectangle.Empty);
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}
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internal protected FloatWindow(DockPanel dockPanel, DockPane pane, Rectangle bounds)
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{
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InternalConstruct(dockPanel, pane, true, bounds);
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}
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private void InternalConstruct(DockPanel dockPanel, DockPane pane, bool boundsSpecified, Rectangle bounds)
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{
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if (dockPanel == null)
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throw(new ArgumentNullException(Strings.FloatWindow_Constructor_NullDockPanel));
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m_nestedPanes = new NestedPaneCollection(this);
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FormBorderStyle = FormBorderStyle.SizableToolWindow;
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ShowInTaskbar = false;
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if (dockPanel.RightToLeft != RightToLeft)
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RightToLeft = dockPanel.RightToLeft;
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if (RightToLeftLayout != dockPanel.RightToLeftLayout)
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RightToLeftLayout = dockPanel.RightToLeftLayout;
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SuspendLayout();
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if (boundsSpecified)
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{
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Bounds = bounds;
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StartPosition = FormStartPosition.Manual;
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}
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else
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{
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StartPosition = FormStartPosition.WindowsDefaultLocation;
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Size = dockPanel.DefaultFloatWindowSize;
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}
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m_dockPanel = dockPanel;
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Owner = DockPanel.FindForm();
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DockPanel.AddFloatWindow(this);
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if (pane != null)
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pane.FloatWindow = this;
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ResumeLayout();
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (DockPanel != null)
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DockPanel.RemoveFloatWindow(this);
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m_dockPanel = null;
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}
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base.Dispose(disposing);
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}
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private bool m_allowEndUserDocking = true;
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public bool AllowEndUserDocking
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{
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get { return m_allowEndUserDocking; }
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set { m_allowEndUserDocking = value; }
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}
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public NestedPaneCollection NestedPanes
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{
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get { return m_nestedPanes; }
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}
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public VisibleNestedPaneCollection VisibleNestedPanes
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{
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get { return NestedPanes.VisibleNestedPanes; }
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}
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private DockPanel m_dockPanel;
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public DockPanel DockPanel
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{
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get { return m_dockPanel; }
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}
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public DockState DockState
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{
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get { return DockState.Float; }
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}
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public bool IsFloat
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{
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get { return DockState == DockState.Float; }
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}
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internal bool IsDockStateValid(DockState dockState)
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{
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foreach (DockPane pane in NestedPanes)
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foreach (IDockContent content in pane.Contents)
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if (!DockHelper.IsDockStateValid(dockState, content.DockHandler.DockAreas))
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return false;
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return true;
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}
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protected override void OnActivated(EventArgs e)
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{
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DockPanel.FloatWindows.BringWindowToFront(this);
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base.OnActivated (e);
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}
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protected override void OnLayout(LayoutEventArgs levent)
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{
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VisibleNestedPanes.Refresh();
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RefreshChanges();
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Visible = (VisibleNestedPanes.Count > 0);
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SetText();
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base.OnLayout(levent);
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}
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[SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters", MessageId = "System.Windows.Forms.Control.set_Text(System.String)")]
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internal void SetText()
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{
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DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
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if (theOnlyPane == null)
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Text = " "; // use " " instead of string.Empty because the whole title bar will disappear when ControlBox is set to false.
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else if (theOnlyPane.ActiveContent == null)
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Text = " ";
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else
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Text = theOnlyPane.ActiveContent.DockHandler.TabText;
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}
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protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified)
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{
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Rectangle rectWorkArea = SystemInformation.VirtualScreen;
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if (y + height > rectWorkArea.Bottom)
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y -= (y + height) - rectWorkArea.Bottom;
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if (y < rectWorkArea.Top)
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y += rectWorkArea.Top - y;
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base.SetBoundsCore (x, y, width, height, specified);
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}
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[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDOWN)
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{
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if (IsDisposed)
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return;
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uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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if (result == 2 && DockPanel.AllowEndUserDocking && this.AllowEndUserDocking) // HITTEST_CAPTION
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{
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Activate();
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m_dockPanel.BeginDrag(this);
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}
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else
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base.WndProc(ref m);
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return;
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}
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else if (m.Msg == (int)Win32.Msgs.WM_NCRBUTTONDOWN)
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{
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uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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if (result == 2) // HITTEST_CAPTION
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{
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DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
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if (theOnlyPane != null && theOnlyPane.ActiveContent != null)
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{
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theOnlyPane.ShowTabPageContextMenu(this, PointToClient(Control.MousePosition));
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return;
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}
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}
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base.WndProc(ref m);
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return;
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}
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else if (m.Msg == (int)Win32.Msgs.WM_CLOSE)
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{
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if (NestedPanes.Count == 0)
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{
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base.WndProc(ref m);
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return;
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}
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for (int i = NestedPanes.Count - 1; i >= 0; i--)
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{
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DockContentCollection contents = NestedPanes[i].Contents;
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for (int j = contents.Count - 1; j >= 0; j--)
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{
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IDockContent content = contents[j];
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if (content.DockHandler.DockState != DockState.Float)
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continue;
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if (!content.DockHandler.CloseButton)
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continue;
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if (content.DockHandler.HideOnClose)
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content.DockHandler.Hide();
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else
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content.DockHandler.Close();
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}
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}
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return;
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}
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else if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDBLCLK)
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{
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uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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if (result != 2) // HITTEST_CAPTION
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{
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base.WndProc(ref m);
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return;
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}
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DockPanel.SuspendLayout(true);
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// Restore to panel
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foreach (DockPane pane in NestedPanes)
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{
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if (pane.DockState != DockState.Float)
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continue;
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pane.RestoreToPanel();
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}
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DockPanel.ResumeLayout(true, true);
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return;
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}
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else if (m.Msg == WM_CHECKDISPOSE)
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{
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if (NestedPanes.Count == 0)
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Dispose();
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return;
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}
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base.WndProc(ref m);
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}
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internal void RefreshChanges()
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{
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if (IsDisposed)
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return;
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if (VisibleNestedPanes.Count == 0)
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{
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ControlBox = true;
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return;
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}
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for (int i=VisibleNestedPanes.Count - 1; i>=0; i--)
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{
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DockContentCollection contents = VisibleNestedPanes[i].Contents;
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for (int j=contents.Count - 1; j>=0; j--)
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{
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IDockContent content = contents[j];
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if (content.DockHandler.DockState != DockState.Float)
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continue;
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if (content.DockHandler.CloseButton)
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{
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ControlBox = true;
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return;
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}
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}
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}
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ControlBox = false;
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}
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public virtual Rectangle DisplayingRectangle
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{
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get { return ClientRectangle; }
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}
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internal void TestDrop(IDockDragSource dragSource, DockOutlineBase dockOutline)
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{
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if (VisibleNestedPanes.Count == 1)
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{
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DockPane pane = VisibleNestedPanes[0];
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if (!dragSource.CanDockTo(pane))
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return;
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Point ptMouse = Control.MousePosition;
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uint lParam = Win32Helper.MakeLong(ptMouse.X, ptMouse.Y);
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if (NativeMethods.SendMessage(Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, lParam) == (uint)Win32.HitTest.HTCAPTION)
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dockOutline.Show(VisibleNestedPanes[0], -1);
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}
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}
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#region IDockDragSource Members
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#region IDragSource Members
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Control IDragSource.DragControl
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{
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get { return this; }
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}
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#endregion
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bool IDockDragSource.IsDockStateValid(DockState dockState)
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{
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return IsDockStateValid(dockState);
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}
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bool IDockDragSource.CanDockTo(DockPane pane)
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{
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if (!IsDockStateValid(pane.DockState))
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return false;
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if (pane.FloatWindow == this)
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return false;
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return true;
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}
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Rectangle IDockDragSource.BeginDrag(Point ptMouse)
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{
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return Bounds;
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}
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public void FloatAt(Rectangle floatWindowBounds)
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{
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Bounds = floatWindowBounds;
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}
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public void DockTo(DockPane pane, DockStyle dockStyle, int contentIndex)
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{
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if (dockStyle == DockStyle.Fill)
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{
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for (int i = NestedPanes.Count - 1; i >= 0; i--)
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{
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DockPane paneFrom = NestedPanes[i];
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for (int j = paneFrom.Contents.Count - 1; j >= 0; j--)
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{
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IDockContent c = paneFrom.Contents[j];
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c.DockHandler.Pane = pane;
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if (contentIndex != -1)
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pane.SetContentIndex(c, contentIndex);
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}
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}
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}
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else
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{
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DockAlignment alignment = DockAlignment.Left;
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if (dockStyle == DockStyle.Left)
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alignment = DockAlignment.Left;
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else if (dockStyle == DockStyle.Right)
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alignment = DockAlignment.Right;
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else if (dockStyle == DockStyle.Top)
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alignment = DockAlignment.Top;
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else if (dockStyle == DockStyle.Bottom)
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alignment = DockAlignment.Bottom;
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MergeNestedPanes(VisibleNestedPanes, pane.NestedPanesContainer.NestedPanes, pane, alignment, 0.5);
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}
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}
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public void DockTo(DockPanel panel, DockStyle dockStyle)
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{
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if (panel != DockPanel)
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throw new ArgumentException(Strings.IDockDragSource_DockTo_InvalidPanel, "panel");
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NestedPaneCollection nestedPanesTo = null;
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if (dockStyle == DockStyle.Top)
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nestedPanesTo = DockPanel.DockWindows[DockState.DockTop].NestedPanes;
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else if (dockStyle == DockStyle.Bottom)
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nestedPanesTo = DockPanel.DockWindows[DockState.DockBottom].NestedPanes;
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else if (dockStyle == DockStyle.Left)
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nestedPanesTo = DockPanel.DockWindows[DockState.DockLeft].NestedPanes;
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else if (dockStyle == DockStyle.Right)
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nestedPanesTo = DockPanel.DockWindows[DockState.DockRight].NestedPanes;
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else if (dockStyle == DockStyle.Fill)
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nestedPanesTo = DockPanel.DockWindows[DockState.Document].NestedPanes;
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DockPane prevPane = null;
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for (int i = nestedPanesTo.Count - 1; i >= 0; i--)
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if (nestedPanesTo[i] != VisibleNestedPanes[0])
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prevPane = nestedPanesTo[i];
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MergeNestedPanes(VisibleNestedPanes, nestedPanesTo, prevPane, DockAlignment.Left, 0.5);
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}
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private static void MergeNestedPanes(VisibleNestedPaneCollection nestedPanesFrom, NestedPaneCollection nestedPanesTo, DockPane prevPane, DockAlignment alignment, double proportion)
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{
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if (nestedPanesFrom.Count == 0)
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return;
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int count = nestedPanesFrom.Count;
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DockPane[] panes = new DockPane[count];
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DockPane[] prevPanes = new DockPane[count];
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DockAlignment[] alignments = new DockAlignment[count];
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double[] proportions = new double[count];
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for (int i = 0; i < count; i++)
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{
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panes[i] = nestedPanesFrom[i];
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prevPanes[i] = nestedPanesFrom[i].NestedDockingStatus.PreviousPane;
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alignments[i] = nestedPanesFrom[i].NestedDockingStatus.Alignment;
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proportions[i] = nestedPanesFrom[i].NestedDockingStatus.Proportion;
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}
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DockPane pane = panes[0].DockTo(nestedPanesTo.Container, prevPane, alignment, proportion);
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panes[0].DockState = nestedPanesTo.DockState;
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for (int i = 1; i < count; i++)
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{
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for (int j = i; j < count; j++)
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{
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if (prevPanes[j] == panes[i - 1])
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prevPanes[j] = pane;
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}
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pane = panes[i].DockTo(nestedPanesTo.Container, prevPanes[i], alignments[i], proportions[i]);
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panes[i].DockState = nestedPanesTo.DockState;
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}
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}
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#endregion
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}
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}
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