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//
// CodeSegmentPreviewWindow.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (C) 2008 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 Gdk;
using Gtk;
using System.Collections.Generic;
namespace Mono.TextEditor
{
public class CodeSegmentPreviewWindow : Gtk.Window
{
const int DefaultPreviewWindowWidth = 320;
const int DefaultPreviewWindowHeight = 200;
MonoTextEditor editor;
Pango.FontDescription fontDescription;
Pango.Layout layout;
Pango.Layout informLayout;
public static string CodeSegmentPreviewInformString {
get;
set;
}
public bool HideCodeSegmentPreviewInformString {
get;
private set;
}
public TextSegment Segment {
get;
private set;
}
public bool IsEmptyText {
get {
return string.IsNullOrEmpty ((layout.Text ?? "").Trim ());
}
}
public CodeSegmentPreviewWindow (MonoTextEditor editor, bool hideCodeSegmentPreviewInformString, TextSegment segment, bool removeIndent = true) : this(editor, hideCodeSegmentPreviewInformString, segment, DefaultPreviewWindowWidth, DefaultPreviewWindowHeight, removeIndent)
{
}
public CodeSegmentPreviewWindow (MonoTextEditor editor, bool hideCodeSegmentPreviewInformString, TextSegment segment, int width, int height, bool removeIndent = true) : base (Gtk.WindowType.Popup)
{
this.HideCodeSegmentPreviewInformString = hideCodeSegmentPreviewInformString;
this.Segment = segment;
this.editor = editor;
this.AppPaintable = true;
this.SkipPagerHint = this.SkipTaskbarHint = true;
this.TypeHint = WindowTypeHint.Menu;
layout = PangoUtil.CreateLayout (this);
informLayout = PangoUtil.CreateLayout (this);
informLayout.SetText (CodeSegmentPreviewInformString);
fontDescription = Pango.FontDescription.FromString (editor.Options.FontName);
fontDescription.Size = (int)(fontDescription.Size * 0.8f);
layout.FontDescription = fontDescription;
layout.Ellipsize = Pango.EllipsizeMode.End;
// setting a max size for the segment (40 lines should be enough),
// no need to markup thousands of lines for a preview window
SetSegment (segment, removeIndent);
CalculateSize (width);
}
const int maxLines = 40;
public void SetSegment (TextSegment segment, bool removeIndent)
{
int startLine = editor.Document.OffsetToLineNumber (segment.Offset);
int endLine = editor.Document.OffsetToLineNumber (segment.EndOffset);
bool pushedLineLimit = endLine - startLine > maxLines;
if (pushedLineLimit)
segment = new TextSegment (segment.Offset, editor.Document.GetLine (startLine + maxLines).Offset - segment.Offset);
layout.Ellipsize = Pango.EllipsizeMode.End;
layout.SetMarkup (editor.GetTextEditorData ().GetMarkup (segment.Offset, segment.Length, removeIndent) + (pushedLineLimit ? Environment.NewLine + "..." : ""));
QueueDraw ();
}
public int PreviewInformStringHeight {
get; private set;
}
public void CalculateSize (int defaultWidth = -1)
{
int w, h;
layout.GetPixelSize (out w, out h);
if (!HideCodeSegmentPreviewInformString) {
int w2, h2;
informLayout.GetPixelSize (out w2, out h2);
PreviewInformStringHeight = h2;
w = System.Math.Max (w, w2);
h += h2;
}
Gdk.Rectangle geometry = Screen.GetUsableMonitorGeometry (Screen.GetMonitorAtWindow (editor.GdkWindow));
this.SetSizeRequest (System.Math.Max (1, System.Math.Min (w + 3, geometry.Width * 2 / 5)),
System.Math.Max (1, System.Math.Min (h + 3, geometry.Height * 2 / 5)));
}
protected override void OnDestroyed ()
{
layout = layout.Kill ();
informLayout = informLayout.Kill ();
fontDescription = fontDescription.Kill ();
if (textGC != null) {
textGC.Dispose ();
textBgGC.Dispose ();
foldGC.Dispose ();
foldBgGC.Dispose ();
textGC = textBgGC = foldGC = foldBgGC = null;
}
base.OnDestroyed ();
}
protected override bool OnKeyPressEvent (EventKey evnt)
{
// Console.WriteLine (evnt.Key);
return base.OnKeyPressEvent (evnt);
}
Gdk.GC textGC, foldGC, textBgGC, foldBgGC;
protected override bool OnExposeEvent (Gdk.EventExpose ev)
{
if (textGC == null) {
textGC = editor.ColorStyle.PlainText.CreateFgGC (ev.Window);
textBgGC = editor.ColorStyle.PlainText.CreateBgGC (ev.Window);
foldGC = editor.ColorStyle.CollapsedText.CreateFgGC (ev.Window);
foldBgGC = editor.ColorStyle.CollapsedText.CreateBgGC (ev.Window);
}
ev.Window.DrawRectangle (textBgGC, true, ev.Area);
ev.Window.DrawLayout (textGC, 1, 1, layout);
ev.Window.DrawRectangle (textBgGC, false, 1, 1, this.Allocation.Width - 3, this.Allocation.Height - 3);
ev.Window.DrawRectangle (foldGC, false, 0, 0, this.Allocation.Width - 1, this.Allocation.Height - 1);
if (!HideCodeSegmentPreviewInformString) {
informLayout.SetText (CodeSegmentPreviewInformString);
int w, h;
informLayout.GetPixelSize (out w, out h);
PreviewInformStringHeight = h;
ev.Window.DrawRectangle (foldBgGC, true, Allocation.Width - w - 3, Allocation.Height - h, w + 2, h - 1);
ev.Window.DrawLayout (foldGC, Allocation.Width - w - 3, Allocation.Height - h, informLayout);
}
return true;
}
}
}
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