mirror of
https://gitlab.gnome.org/GNOME/gitg
synced 2024-10-31 03:48:10 +00:00
504 lines
10 KiB
Vala
504 lines
10 KiB
Vala
/*
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* This file is part of gitg
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*
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* Copyright (C) 2012 - Jesse van den Kieboom
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*
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* gitg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* gitg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gitg. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace GitgExt
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{
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private enum Column
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{
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ICON_NAME,
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TEXT,
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HEADER,
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HINT,
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SECTION,
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OID
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}
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private enum Hint
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{
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NONE,
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HEADER,
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DEFAULT,
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SEPARATOR
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}
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public delegate void NavigationActivated(int numclick);
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public class NavigationTreeModel : Gtk.TreeStore
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{
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private class Activated : Object
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{
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private NavigationActivated d_activated;
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public Activated(owned NavigationActivated? activated)
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{
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d_activated = (owned)activated;
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}
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public void activate(int numclick)
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{
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if (d_activated != null)
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{
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d_activated(numclick);
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}
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}
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}
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private SList<Gtk.TreeIter?> d_parents;
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private uint d_sections;
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private uint d_oid;
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private Activated[] d_callbacks;
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construct
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{
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set_column_types({typeof(string), typeof(string), typeof(string), typeof(uint), typeof(uint), typeof(uint)});
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d_callbacks = new Activated[100];
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d_callbacks.length = 0;
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}
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public uint begin_section()
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{
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d_parents = null;
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return d_sections;
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}
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public void end_section()
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{
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++d_sections;
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}
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private void append_one(string text,
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string? icon_name,
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uint hint,
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owned NavigationActivated? callback,
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out Gtk.TreeIter iter)
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{
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if (d_parents != null)
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{
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base.append(out iter, d_parents.data);
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}
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else
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{
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base.append(out iter, null);
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}
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@set(iter,
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Column.ICON_NAME, icon_name,
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hint == Hint.HEADER ? Column.HEADER : Column.TEXT, text,
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Column.HINT, hint,
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Column.SECTION, d_sections,
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Column.OID, d_oid);
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d_callbacks += new Activated((owned)callback);
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++d_oid;
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}
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public NavigationTreeModel begin_header(string text,
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string? icon_name)
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{
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Gtk.TreeIter iter;
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append_one(text, icon_name, Hint.HEADER, null, out iter);
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d_parents.prepend(iter);
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return this;
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}
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public NavigationTreeModel end_header()
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{
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if (d_parents != null)
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{
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d_parents.remove_link(d_parents);
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}
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return this;
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}
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public new NavigationTreeModel append_default(string text,
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string? icon_name,
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owned NavigationActivated? callback)
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{
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Gtk.TreeIter iter;
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append_one(text, icon_name, Hint.DEFAULT, (owned)callback, out iter);
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return this;
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}
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public new NavigationTreeModel append(string text,
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string? icon_name,
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owned NavigationActivated? callback)
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{
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Gtk.TreeIter iter;
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append_one(text, icon_name, Hint.NONE, (owned)callback, out iter);
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return this;
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}
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public new NavigationTreeModel separator()
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{
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Gtk.TreeIter iter;
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append_one("", null, Hint.SEPARATOR, null, out iter);
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return this;
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}
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public uint populate(GitgExt.Navigation? nav)
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{
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if (nav == null)
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{
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return 0;
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}
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uint ret = begin_section();
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nav.populate(this);
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end_section();
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return ret;
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}
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public void remove_section(uint section)
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{
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Gtk.TreeIter iter;
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if (!get_iter_first(out iter))
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{
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return;
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}
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while (true)
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{
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uint s;
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@get(iter, Column.SECTION, out s);
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if (s == section)
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{
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if (!base.remove(ref iter))
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{
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break;
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}
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}
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else
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{
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if (!iter_next(ref iter))
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{
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break;
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}
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}
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}
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}
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public new void clear()
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{
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base.clear();
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d_sections = 0;
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d_oid = 0;
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d_callbacks.length = 0;
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}
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public void activate(Gtk.TreeIter iter, int numclick)
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{
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uint oid;
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@get(iter, Column.OID, out oid);
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if (d_callbacks[oid] != null)
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{
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d_callbacks[oid].activate(numclick);
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}
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}
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}
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public class NavigationRendererText : Gtk.CellRendererText
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{
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private string d_icon_name;
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private Gdk.Pixbuf d_pixbuf;
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private Gtk.StateFlags d_state;
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public string? icon_name
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{
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get { return d_icon_name;}
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set
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{
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if (d_icon_name != value)
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{
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d_icon_name = value;
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reset_pixbuf();
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}
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}
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}
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public uint hint
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{ get; set; }
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construct
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{
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ellipsize = Pango.EllipsizeMode.MIDDLE;
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}
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private void reset_pixbuf()
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{
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d_pixbuf = null;
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}
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private void ensure_pixbuf(Gtk.StyleContext ctx)
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{
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if (d_icon_name == null || (d_pixbuf != null && d_state == ctx.get_state()))
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{
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return;
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}
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d_pixbuf = null;
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d_state = ctx.get_state();
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var screen = ctx.get_screen();
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var settings = Gtk.Settings.get_for_screen(screen);
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int w = 16;
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int h = 16;
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Gtk.icon_size_lookup_for_settings(settings, Gtk.IconSize.MENU, out w, out h);
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Gtk.IconInfo? info = Gtk.IconTheme.get_default().lookup_icon(d_icon_name,
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int.min(w, h),
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Gtk.IconLookupFlags.USE_BUILTIN);
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if (info == null)
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{
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return;
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}
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bool symbolic = false;
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try
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{
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d_pixbuf = info.load_symbolic_for_context(ctx, out symbolic);
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} catch {};
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if (d_pixbuf != null)
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{
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var source = new Gtk.IconSource();
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source.set_pixbuf(d_pixbuf);
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source.set_size(Gtk.IconSize.SMALL_TOOLBAR);
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source.set_size_wildcarded(false);
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d_pixbuf = ctx.render_icon_pixbuf(source, Gtk.IconSize.SMALL_TOOLBAR);
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}
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}
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protected override void get_preferred_width(Gtk.Widget widget,
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out int minimum_width,
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out int minimum_height)
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{
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ensure_pixbuf(widget.get_style_context());
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// Size of text
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base.get_preferred_width(widget, out minimum_width, out minimum_height);
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if (d_pixbuf != null)
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{
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minimum_width += d_pixbuf.get_width() + 3;
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minimum_height += d_pixbuf.get_height();
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}
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}
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protected override void get_preferred_height_for_width(Gtk.Widget widget,
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int width,
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out int minimum_height,
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out int natural_height)
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{
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base.get_preferred_height_for_width(widget, width,
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out minimum_height,
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out natural_height);
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ensure_pixbuf(widget.get_style_context());
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if (d_pixbuf != null)
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{
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minimum_height = int.max(minimum_height, d_pixbuf.height);
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natural_height = int.max(natural_height, d_pixbuf.height);
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}
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}
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protected override void render(Cairo.Context ctx,
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Gtk.Widget widget,
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Gdk.Rectangle background_area,
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Gdk.Rectangle cell_area,
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Gtk.CellRendererState state)
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{
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var stx = widget.get_style_context();
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ensure_pixbuf(stx);
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if (d_pixbuf == null)
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{
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base.render(ctx, widget, background_area, cell_area, state);
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}
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else
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{
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// render the text with an additional padding
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Gdk.Rectangle area = cell_area;
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area.x += d_pixbuf.width + 3;
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base.render(ctx, widget, background_area, area, state);
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// render the pixbuf
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int yp = (cell_area.height - d_pixbuf.height) / 2;
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stx.render_icon(ctx, d_pixbuf, cell_area.x, cell_area.y + yp);
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}
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}
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}
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public class NavigationTreeView : Gtk.TreeView
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{
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construct
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{
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var model = new NavigationTreeModel();
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set_model(model);
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var col = new Gtk.TreeViewColumn();
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var padcell = new Gtk.CellRendererText();
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var headercell = new NavigationRendererText();
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var cell = new NavigationRendererText();
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padcell.xpad = 6;
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headercell.ypad = 6;
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headercell.weight = Pango.Weight.BOLD;
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col.pack_start(padcell, false);
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col.pack_start(headercell, true);
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col.pack_start(cell, true);
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col.set_attributes(headercell,
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"icon_name", Column.ICON_NAME,
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"text", Column.HEADER);
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col.set_attributes(cell,
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"icon_name", Column.ICON_NAME,
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"text", Column.TEXT);
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col.set_cell_data_func(headercell, (layout, cell, model, iter) => {
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Hint hint;
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model.get(iter, Column.HINT, out hint);
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cell.visible = (hint == Hint.HEADER);
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});
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col.set_cell_data_func(cell, (layout, cell, model, iter) => {
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Hint hint;
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model.get(iter, Column.HINT, out hint);
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cell.visible = (hint != Hint.HEADER);
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});
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set_row_separator_func((model, iter) => {
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Hint hint;
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model.get(iter, Column.HINT, out hint);
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return hint == Hint.SEPARATOR;
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});
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append_column(col);
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get_selection().set_select_function((sel, model, path, cursel) => {
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Gtk.TreeIter iter;
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model.get_iter(out iter, path);
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uint hint;
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model.get(iter, Column.HINT, out hint);
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return hint != Hint.HEADER;
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});
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get_selection().changed.connect((sel) => {
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Gtk.TreeIter iter;
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if (sel.get_selected(null, out iter))
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{
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model.activate(iter, 1);
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}
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});
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}
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public new NavigationTreeModel model
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{
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get { return base.get_model() as NavigationTreeModel; }
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}
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private bool select_first_in(Gtk.TreeIter? parent, bool seldef)
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{
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Gtk.TreeIter iter;
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if (!model.iter_children(out iter, parent))
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{
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return false;
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}
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while (true)
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{
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uint hint;
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model.get(iter, Column.HINT, out hint);
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if (hint == Hint.HEADER)
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{
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if (select_first_in(iter, seldef))
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{
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return true;
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}
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}
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if (!seldef || hint == Hint.DEFAULT)
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{
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get_selection().select_iter(iter);
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return true;
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}
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if (!model.iter_next(ref iter))
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{
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return false;
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}
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}
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}
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public void select_first()
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{
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select_first_in(null, true) || select_first_in(null, false);
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}
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protected override void row_activated(Gtk.TreePath path, Gtk.TreeViewColumn col)
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{
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Gtk.TreeIter iter;
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model.get_iter(out iter, path);
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model.activate(iter, 2);
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}
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}
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}
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// ex:set ts=4 noet:
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