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//
// TooltipProvider.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc
//
// 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 MonoDevelop.Core.Text;
using MonoDevelop.Components;
using MonoDevelop.Ide.CodeCompletion;
namespace MonoDevelop.Ide.Editor
{
public sealed class TooltipItem : ISegment
{
int offset;
int length;
#region ISegment implementation
public int Offset {
get {
return offset;
}
internal set {
offset = value;
}
}
public int Length {
get {
return length;
}
internal set {
length = value;
}
}
public int EndOffset {
get {
return offset + length;
}
}
#endregion
public object Item { get; set; }
public TooltipItem (object item, ISegment itemSegment)
{
if (itemSegment == null)
throw new ArgumentNullException ("itemSegment");
Item = item;
this.offset = itemSegment.Offset;
this.length = itemSegment.Length;
}
public TooltipItem (object item, int offset, int length)
{
Item = item;
this.offset = offset;
this.length = length;
}
}
// TODO: Improve tooltip API - that really looks messy
public abstract class TooltipProvider
{
public abstract TooltipItem GetItem (TextEditor editor, DocumentContext ctx, int offset);
public virtual bool IsInteractive (TextEditor editor, Control tipWindow)
{
return false;
}
public virtual void GetRequiredPosition (TextEditor editor, Control tipWindow, out int requiredWidth, out double xalign)
{
requiredWidth = ((Gtk.Widget)tipWindow).SizeRequest ().Width;
xalign = 0.5;
}
public virtual Control CreateTooltipWindow (TextEditor editor, DocumentContext ctx, TooltipItem item, int offset, Gdk.ModifierType modifierState)
{
return null;
}
protected Xwt.Rectangle GetAllocation (TextEditor editor)
{
return editor.GetContent<ITextEditorImpl> ().GetEditorAllocation ();
}
void ShowTipInfoWindow (TextEditor editor, TooltipInformationWindow tipWindow, TooltipItem item, Gdk.ModifierType modifierState, int mouseX, int mouseY)
{
Gtk.Widget editorWidget = editor;
var startLoc = editor.OffsetToLocation (item.Offset);
var endLoc = editor.OffsetToLocation (item.EndOffset);
var p1 = editor.LocationToPoint (startLoc);
var p2 = editor.LocationToPoint (endLoc);
int w = (int)(p2.X - p1.X);
var caret = new Gdk.Rectangle (
(int)p1.X,
(int)p1.Y,
(int)w,
(int)editor.LineHeight
);
tipWindow.ShowPopup (editorWidget, caret, PopupPosition.Top);
}
public virtual void ShowTooltipWindow (TextEditor editor, Control tipWindow, TooltipItem item, Gdk.ModifierType modifierState, int mouseX, int mouseY)
{
if (tipWindow == null)
return;
var tipInfoWindow = ((Gtk.Widget)tipWindow) as TooltipInformationWindow;
if (tipInfoWindow != null) {
ShowTipInfoWindow (editor, tipInfoWindow, item, modifierState, mouseX, mouseY);
return;
}
var origin = editor.GetContent<ITextEditorImpl> ().GetEditorWindowOrigin ();
int w;
double xalign;
GetRequiredPosition (editor, tipWindow, out w, out xalign);
w += 10;
var allocation = GetAllocation (editor);
int x = (int)(mouseX + origin.X + allocation.X);
int y = (int)(mouseY + origin.Y + allocation.Y);
Gtk.Widget widget = editor;
var geometry = widget.Screen.GetUsableMonitorGeometry (widget.Screen.GetMonitorAtPoint (x, y));
x -= (int) ((double) w * xalign);
y += 10;
if (x + w >= geometry.X + geometry.Width)
x = geometry.X + geometry.Width - w;
if (x < geometry.Left)
x = geometry.Left;
var gtkWindow = (Gtk.Window)tipWindow;
int h = gtkWindow.SizeRequest ().Height;
if (y + h >= geometry.Y + geometry.Height)
y = geometry.Y + geometry.Height - h;
if (y < geometry.Top)
y = geometry.Top;
gtkWindow.Move (x, y);
gtkWindow.ShowAll ();
}
}
}
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