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//
// DockContainer.cs
//
// Author:
// Lluis Sanchez Gual
//
//
// Copyright (C) 2007 Novell, Inc (http://www.novell.com)
//
// 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.Collections.Generic;
using Gtk;
using Gdk;
namespace MonoDevelop.Components.Docking
{
class DockContainer: Container, IShadedWidget
{
DockLayout layout;
DockFrame frame;
List<TabStrip> notebooks = new List<TabStrip> ();
List<DockItem> items = new List<DockItem> ();
bool needsRelayout = true;
DockGroup currentHandleGrp;
int currentHandleIndex;
bool dragging;
int dragPos;
int dragSize;
PlaceholderWindow placeholderWindow;
static Gdk.Cursor hresizeCursor = new Gdk.Cursor (CursorType.SbHDoubleArrow);
static Gdk.Cursor vresizeCursor = new Gdk.Cursor (CursorType.SbVDoubleArrow);
public DockContainer (DockFrame frame)
{
this.Events = EventMask.ButtonPressMask | EventMask.ButtonReleaseMask | EventMask.PointerMotionMask | EventMask.LeaveNotifyMask;
this.frame = frame;
frame.ShadedContainer.Add (this);
}
internal DockGroupItem FindDockGroupItem (string id)
{
if (layout == null)
return null;
else
return layout.FindDockGroupItem (id);
}
public List<DockItem> Items {
get { return items; }
}
public DockLayout Layout {
get { return layout; }
set { layout = value; }
}
public void Clear ()
{
layout = null;
}
public void LoadLayout (DockLayout dl)
{
// Sticky items currently selected in notebooks will remain
// selected after switching the layout
List<DockItem> sickyOnTop = new List<DockItem> ();
foreach (DockItem it in items) {
if ((it.Behavior & DockItemBehavior.Sticky) != 0) {
DockGroupItem gitem = FindDockGroupItem (it.Id);
if (gitem != null && gitem.ParentGroup.IsSelectedPage (it))
sickyOnTop.Add (it);
}
}
if (layout != null)
layout.StoreAllocation ();
layout = dl;
layout.RestoreAllocation ();
// Make sure items not present in this layout are hidden
foreach (DockItem it in items) {
if ((it.Behavior & DockItemBehavior.Sticky) != 0)
it.Visible = it.StickyVisible;
if (layout.FindDockGroupItem (it.Id) == null)
it.HideWidget ();
}
RelayoutWidgets ();
foreach (DockItem it in sickyOnTop)
it.Present (false);
}
public void StoreAllocation ()
{
if (layout != null)
layout.StoreAllocation ();
}
protected override void OnSizeRequested (ref Requisition req)
{
if (layout != null) {
LayoutWidgets ();
req = layout.SizeRequest ();
}
}
protected override void OnSizeAllocated (Gdk.Rectangle rect)
{
base.OnSizeAllocated (rect);
if (layout == null)
return;
// This container has its own window, so allocation of children
// is relative to 0,0
rect.X = rect.Y = 0;
LayoutWidgets ();
layout.Size = -1;
layout.SizeAllocate (rect);
}
protected override void ForAll (bool include_internals, Gtk.Callback callback)
{
List<Widget> widgets = new List<Widget> ();
foreach (Widget w in notebooks)
widgets.Add (w);
foreach (DockItem it in items) {
if (it.HasWidget && it.Widget.Parent == this)
widgets.Add (it.Widget);
}
foreach (Widget w in widgets)
callback (w);
}
protected override bool OnExposeEvent (Gdk.EventExpose evnt)
{
bool res = base.OnExposeEvent (evnt);
if (layout != null) {
layout.Draw (evnt.Area, currentHandleGrp, currentHandleIndex);
}
return res;
}
public void RelayoutWidgets ()
{
needsRelayout = true;
QueueResize ();
}
void LayoutWidgets ()
{
if (!needsRelayout)
return;
needsRelayout = false;
// Create the needed notebooks and place the widgets in there
List<DockGroup> tabbedGroups = new List<DockGroup> ();
GetTabbedGroups (layout, tabbedGroups);
for (int n=0; n<tabbedGroups.Count; n++) {
DockGroup grp = tabbedGroups [n];
TabStrip ts;
if (n < notebooks.Count) {
ts = notebooks [n];
}
else {
ts = new TabStrip (frame);
ts.Show ();
notebooks.Add (ts);
ts.Parent = this;
}
grp.UpdateNotebook (ts);
}
// Remove spare tab strips
for (int n = notebooks.Count - 1; n >= tabbedGroups.Count; n--) {
TabStrip ts = notebooks [n];
notebooks.RemoveAt (n);
ts.Clear ();
ts.Unparent ();
ts.Destroy ();
}
// Add widgets to the container
layout.LayoutWidgets ();
NotifySeparatorsChanged ();
}
void GetTabbedGroups (DockGroup grp, List<DockGroup> tabbedGroups)
{
if (grp.Type == DockGroupType.Tabbed) {
if (grp.VisibleObjects.Count > 1)
tabbedGroups.Add (grp);
else
grp.ResetNotebook ();
}
else {
// Make sure it doesn't have a notebook bound to it
grp.ResetNotebook ();
foreach (DockObject ob in grp.Objects) {
if (ob is DockGroup)
GetTabbedGroups ((DockGroup) ob, tabbedGroups);
}
}
}
protected override bool OnButtonPressEvent (Gdk.EventButton ev)
{
if (currentHandleGrp != null) {
dragging = true;
dragPos = (currentHandleGrp.Type == DockGroupType.Horizontal) ? (int)ev.XRoot : (int)ev.YRoot;
DockObject obj = currentHandleGrp.VisibleObjects [currentHandleIndex];
dragSize = (currentHandleGrp.Type == DockGroupType.Horizontal) ? obj.Allocation.Width : obj.Allocation.Height;
}
return base.OnButtonPressEvent (ev);
}
protected override bool OnButtonReleaseEvent (Gdk.EventButton e)
{
dragging = false;
return base.OnButtonReleaseEvent (e);
}
protected override bool OnMotionNotifyEvent (Gdk.EventMotion e)
{
if (dragging) {
NotifySeparatorsChanged ();
int newpos = (currentHandleGrp.Type == DockGroupType.Horizontal) ? (int)e.XRoot : (int)e.YRoot;
if (newpos != dragPos) {
int nsize = dragSize + (newpos - dragPos);
currentHandleGrp.ResizeItem (currentHandleIndex, nsize);
layout.DrawSeparators (Allocation, currentHandleGrp, currentHandleIndex, true, null);
}
}
else if (layout != null && placeholderWindow == null) {
int index;
DockGroup grp;
if (FindHandle (layout, (int)e.X, (int)e.Y, out grp, out index)) {
if (currentHandleGrp != grp || currentHandleIndex != index) {
if (grp.Type == DockGroupType.Horizontal)
this.GdkWindow.Cursor = hresizeCursor;
else
this.GdkWindow.Cursor = vresizeCursor;
currentHandleGrp = grp;
currentHandleIndex = index;
layout.DrawSeparators (Allocation, currentHandleGrp, currentHandleIndex, true, null);
}
}
else if (currentHandleGrp != null) {
ResetHandleHighlight ();
}
}
return base.OnMotionNotifyEvent (e);
}
void ResetHandleHighlight ()
{
this.GdkWindow.Cursor = null;
currentHandleGrp = null;
currentHandleIndex = -1;
if (layout != null)
layout.DrawSeparators (Allocation, null, -1, true, null);
}
protected override bool OnLeaveNotifyEvent (EventCrossing evnt)
{
if (!dragging && evnt.Mode != CrossingMode.Grab)
ResetHandleHighlight ();
return base.OnLeaveNotifyEvent (evnt);
}
bool FindHandle (DockGroup grp, int x, int y, out DockGroup foundGrp, out int objectIndex)
{
if (grp.Type != DockGroupType.Tabbed && grp.Allocation.Contains (x, y)) {
for (int n=0; n<grp.VisibleObjects.Count; n++) {
DockObject obj = grp.VisibleObjects [n];
if (n < grp.Objects.Count - 1) {
if ((grp.Type == DockGroupType.Horizontal && x > obj.Allocation.Right && x < obj.Allocation.Right + frame.TotalHandleSize) ||
(grp.Type == DockGroupType.Vertical && y > obj.Allocation.Bottom && y < obj.Allocation.Bottom + frame.TotalHandleSize))
{
foundGrp = grp;
objectIndex = n;
return true;
}
}
if (obj is DockGroup) {
if (FindHandle ((DockGroup) obj, x, y, out foundGrp, out objectIndex))
return true;
}
}
}
foundGrp = null;
objectIndex = 0;
return false;
}
protected override void OnRealized ()
{
WidgetFlags |= WidgetFlags.Realized;
Gdk.WindowAttr attributes = new Gdk.WindowAttr ();
attributes.X = Allocation.X;
attributes.Y = Allocation.Y;
attributes.Height = Allocation.Height;
attributes.Width = Allocation.Width;
attributes.WindowType = Gdk.WindowType.Child;
attributes.Wclass = Gdk.WindowClass.InputOutput;
attributes.Visual = Visual;
attributes.Colormap = Colormap;
attributes.EventMask = (int)(Events |
Gdk.EventMask.ExposureMask |
Gdk.EventMask.Button1MotionMask |
Gdk.EventMask.ButtonPressMask |
Gdk.EventMask.ButtonReleaseMask);
Gdk.WindowAttributesType attributes_mask =
Gdk.WindowAttributesType.X |
Gdk.WindowAttributesType.Y |
Gdk.WindowAttributesType.Colormap |
Gdk.WindowAttributesType.Visual;
GdkWindow = new Gdk.Window (ParentWindow, attributes, (int)attributes_mask);
GdkWindow.UserData = Handle;
Style = Style.Attach (GdkWindow);
Style.SetBackground (GdkWindow, State);
//GdkWindow.SetBackPixmap (null, true);
}
internal void ShowPlaceholder ()
{
placeholderWindow = new PlaceholderWindow (frame);
}
internal bool UpdatePlaceholder (DockItem item, Gdk.Size size, bool allowDocking)
{
if (placeholderWindow == null)
return false;
int px, py;
GetPointer (out px, out py);
placeholderWindow.AllowDocking = allowDocking;
DockDelegate dockDelegate;
Gdk.Rectangle rect;
if (allowDocking && layout.GetDockTarget (item, px, py, out dockDelegate, out rect)) {
int ox, oy;
GdkWindow.GetOrigin (out ox, out oy);
placeholderWindow.Relocate (ox + rect.X, oy + rect.Y, rect.Width, rect.Height, true);
placeholderWindow.Show ();
return true;
} else {
int ox, oy;
GdkWindow.GetOrigin (out ox, out oy);
placeholderWindow.Relocate (ox + px - size.Width / 2, oy + py - 18, size.Width, size.Height, false);
placeholderWindow.Show ();
}
return false;
}
internal void DockInPlaceholder (DockItem item)
{
if (placeholderWindow == null || !placeholderWindow.Visible)
return;
item.Status = DockItemStatus.Dockable;
int px, py;
GetPointer (out px, out py);
DockDelegate dockDelegate;
Gdk.Rectangle rect;
if (placeholderWindow.AllowDocking && layout.GetDockTarget (item, px, py, out dockDelegate, out rect)) {
DockGroupItem dummyItem = new DockGroupItem (frame, new DockItem (frame, "__dummy"));
DockGroupItem gitem = layout.FindDockGroupItem (item.Id);
gitem.ParentGroup.ReplaceItem (gitem, dummyItem);
dockDelegate (item);
dummyItem.ParentGroup.Remove (dummyItem);
RelayoutWidgets ();
} else {
DockGroupItem gi = FindDockGroupItem (item.Id);
int pw, ph;
placeholderWindow.GetPosition (out px, out py);
placeholderWindow.GetSize (out pw, out ph);
gi.FloatRect = new Rectangle (px, py, pw, ph);
item.Status = DockItemStatus.Floating;
}
}
internal void HidePlaceholder ()
{
if (placeholderWindow != null) {
placeholderWindow.Destroy ();
placeholderWindow = null;
}
}
public IEnumerable<Rectangle> GetShadedAreas ()
{
List<Gdk.Rectangle> rects = new List<Gdk.Rectangle> ();
if (layout != null)
layout.DrawSeparators (Allocation, currentHandleGrp, currentHandleIndex, true, rects);
return rects;
}
internal void NotifySeparatorsChanged ()
{
if (AreasChanged != null)
AreasChanged (this, EventArgs.Empty);
}
public event EventHandler AreasChanged;
}
}
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