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OpenImagesListWidget.cs
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/
OpenImagesListWidget.cs
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//
// OpenImagesListWidget.cs
//
// Author:
// Cameron White <cameronwhite91@gmail.com>
//
// Copyright (c) 2011 2011
//
// 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 Gtk;
using Pinta.Core;
namespace Pinta.Gui.Widgets
{
public class OpenImagesListWidget : ScrolledWindow
{
private TreeView tree;
private ListStore store;
private CellRendererPixbuf file_close_cell;
private TreeViewColumn file_name_column;
private TreeViewColumn file_preview_column;
private const int PreviewWidth = 60;
private const int PreviewHeight = 40;
private const int PreviewColumnWidth = 70;
private Gdk.Pixbuf close_icon = PintaCore.Resources.GetIcon (Stock.Close);
public OpenImagesListWidget ()
{
CanFocus = false;
SetSizeRequest (200, 200);
SetPolicy (PolicyType.Automatic, PolicyType.Automatic);
tree = new TreeView ();
tree.HeadersVisible = false;
tree.EnableGridLines = TreeViewGridLines.None;
tree.Selection.Mode = SelectionMode.Single;
tree.Selection.SelectFunction = HandleDocumentSelected;
var file_preview_cell = new CellRendererSurface (PreviewWidth, PreviewHeight);
file_preview_column = new TreeViewColumn ("File Preview", file_preview_cell, "surface", 0);
file_preview_column.Sizing = TreeViewColumnSizing.Fixed;
file_preview_column.FixedWidth = PreviewColumnWidth;
tree.AppendColumn (file_preview_column);
file_name_column = new TreeViewColumn ();
CellRendererText file_name_cell = new CellRendererText ();
file_name_column.PackStart (file_name_cell, true);
file_name_column.AddAttribute (file_name_cell, "text", 1);
file_close_cell = new CellRendererPixbuf ();
file_name_column.PackStart (file_close_cell, false);
file_name_column.AddAttribute (file_close_cell, "pixbuf", 2);
tree.AppendColumn (file_name_column);
store = new ListStore (typeof (Cairo.ImageSurface), typeof (string), typeof (Gdk.Pixbuf));
tree.Model = store;
tree.ButtonPressEvent += HandleTreeButtonPressEvent;
Add (tree);
ShowAll ();
PintaCore.Workspace.DocumentOpened += HandleDocumentOpenedOrClosed;
PintaCore.Workspace.DocumentClosed += HandleDocumentOpenedOrClosed;
PintaCore.Workspace.DocumentCreated += HandleDocumentOpenedOrClosed;
PintaCore.Workspace.ActiveDocumentChanged += HandleActiveDocumentChanged;
// update the thumbnails whenever the image is modified
PintaCore.History.HistoryItemAdded += HandleDocumentModified;
PintaCore.History.ActionRedone += HandleDocumentModified;
PintaCore.History.ActionUndone += HandleDocumentModified;
}
void HandleDocumentModified (object sender, EventArgs e)
{
RebuildDocumentList ();
UpdateSelectedDocument ();
}
/// <summary>
/// Attempt to close the selected document if the close button is clicked
/// </summary>
[GLib.ConnectBefore]
void HandleTreeButtonPressEvent (object o, ButtonPressEventArgs args)
{
double click_x = args.Event.X;
double click_y = args.Event.Y;
int start_pos, width;
file_name_column.CellGetPosition (file_close_cell, out start_pos, out width);
start_pos += file_preview_column.Width;
// if the close button was clicked, find the row that was clicked and close that document
if (start_pos <= click_x && start_pos + width > click_x)
{
TreePath path;
tree.GetPathAtPos ((int)click_x, (int)click_y, out path);
PintaCore.Workspace.SetActiveDocument (path.Indices[0]);
PintaCore.Actions.File.Close.Activate ();
UpdateSelectedDocument ();
}
}
/// <summary>
/// If the active document is changed elsewhere, update the selected document in this widget
/// </summary>
private void HandleActiveDocumentChanged (object sender, EventArgs e)
{
UpdateSelectedDocument ();
}
private void UpdateSelectedDocument ()
{
if (PintaCore.Workspace.HasOpenDocuments)
{
int doc_index = PintaCore.Workspace.ActiveDocumentIndex;
if (doc_index != -1)
{
var path = new TreePath (new int[] { doc_index });
tree.Selection.SelectPath (path);
}
}
}
private void RebuildDocumentList ()
{
store.Clear ();
foreach (Document doc in PintaCore.Workspace.OpenDocuments)
{
doc.Renamed -= HandleDocRenamed;
doc.Renamed += HandleDocRenamed;
store.AppendValues (doc.GetFlattenedImage (), doc.Filename, close_icon);
}
}
/// <summary>
/// Rebuilds the list of documents after a document is opened or closed
/// </summary>
private void HandleDocumentOpenedOrClosed (object sender, DocumentEventArgs e)
{
RebuildDocumentList ();
}
/// <summary>
/// If a document is renamed, just rebuild the list of open documents
/// </summary>
private void HandleDocRenamed (object sender, EventArgs e)
{
RebuildDocumentList ();
UpdateSelectedDocument ();
}
/// <summary>
/// Sets the active document as selected by the user
/// </summary>
private bool HandleDocumentSelected (TreeSelection selection, TreeModel model, TreePath path, bool path_currently_selected)
{
int index = path.Indices[0];
if (!path_currently_selected && index != PintaCore.Workspace.ActiveDocumentIndex)
{
PintaCore.Workspace.SetActiveDocument (index);
}
return true;
}
}
}