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Viewing changes to external/xwt/Xwt.Gtk/Xwt.GtkBackend/ButtonBackend.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt.Gtk/Xwt.GtkBackend/ButtonBackend.cs
 
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// 
 
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// ButtonBackend.cs
 
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//  
 
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// Author:
 
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//       Lluis Sanchez <lluis@xamarin.com>
 
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// 
 
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// Copyright (c) 2011 Xamarin Inc
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using Xwt.Backends;
 
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using Xwt.Engine;
 
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namespace Xwt.GtkBackend
 
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{
 
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        public class ButtonBackend: WidgetBackend, IButtonBackend
 
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        {
 
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                protected bool ignoreClickEvents;
 
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                public ButtonBackend ()
 
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                {
 
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                }
 
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                public override void Initialize ()
 
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                {
 
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                        Widget = new Gtk.Button ();
 
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                        base.Widget.Show ();
 
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                }
 
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                protected new Gtk.Button Widget {
 
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                        get { return (Gtk.Button)base.Widget; }
 
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                        set { base.Widget = value; }
 
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                }
 
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                protected new IButtonEventSink EventSink {
 
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                        get { return (IButtonEventSink)base.EventSink; }
 
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                }
 
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                public void SetContent (string label, object imageBackend, ContentPosition position)
 
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                {
 
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                        if (label != null && label.Length == 0)
 
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                                label = null;
 
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                        Button b = (Button) Frontend;
 
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                        if (label != null && imageBackend == null && b.Type == ButtonType.Normal) {
 
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                                Widget.Label = label;
 
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                                return;
 
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                        }
 
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                        if (b.Type == ButtonType.Disclosure) {
 
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                                Widget.Label = null;
 
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                                Widget.Image = new Gtk.Arrow (Gtk.ArrowType.Down, Gtk.ShadowType.Out);
 
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                                Widget.Image.ShowAll ();
 
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                                return;
 
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                        }
 
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                        Gtk.Widget contentWidget = null;
 
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                        Gtk.Widget imageWidget = null;
 
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                        if (imageBackend != null)
 
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                                imageWidget = new Gtk.Image ((Gdk.Pixbuf)imageBackend);
 
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                        if (label != null && imageWidget == null) {
 
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                                contentWidget = new Gtk.Label (label); 
 
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                        }
 
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                        else if (label == null && imageWidget != null) {
 
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                                contentWidget = imageWidget;
 
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                        }
 
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                        else if (label != null && imageWidget != null) {
 
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                                Gtk.Box box = position == ContentPosition.Left || position == ContentPosition.Right ? (Gtk.Box) new Gtk.HBox (false, 3) : (Gtk.Box) new Gtk.VBox (false, 3);
 
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                                var lab = new Gtk.Label (label);
 
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                                if (position == ContentPosition.Left || position == ContentPosition.Top) {
 
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                                        box.PackStart (imageWidget, false, false, 0);
 
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                                        box.PackStart (lab, false, false, 0);
 
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                                } else {
 
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                                        box.PackStart (lab, false, false, 0);
 
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                                        box.PackStart (imageWidget, false, false, 0);
 
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                                }
 
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                                contentWidget = box;
 
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                        }
 
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                        if (b.Type == ButtonType.DropDown) {
 
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                                if (contentWidget != null) {
 
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                                        Gtk.HBox box = new Gtk.HBox (false, 3);
 
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                                        box.PackStart (contentWidget, true, true, 3);
 
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                                        box.PackStart (new Gtk.VSeparator (), true, true, 0);
 
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                                        box.PackStart (new Gtk.Arrow (Gtk.ArrowType.Down, Gtk.ShadowType.Out), false, false, 0);
 
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                                        contentWidget = box;
 
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                                } else
 
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                                        contentWidget = new Gtk.Arrow (Gtk.ArrowType.Down, Gtk.ShadowType.Out);
 
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                        }
 
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                        if (contentWidget != null) {
 
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                                contentWidget.ShowAll ();
 
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                                Widget.Label = null;
 
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                                Widget.Image = contentWidget;
 
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                        } else
 
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                                Widget.Label = null;
 
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                }
 
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                public void SetButtonStyle (ButtonStyle style)
 
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                {
 
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                        switch (style) {
 
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                        case ButtonStyle.Normal:
 
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                                SetMiniMode (false);
 
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                                Widget.Relief = Gtk.ReliefStyle.Normal;
 
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                                break;
 
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                        case ButtonStyle.Flat:
 
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                                SetMiniMode (false);
 
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                                Widget.Relief = Gtk.ReliefStyle.None;
 
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                                break;
 
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                        case ButtonStyle.Borderless:
 
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                                SetMiniMode (true);
 
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                                Widget.Relief = Gtk.ReliefStyle.None;
 
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                                break;
 
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                        }
 
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                }
 
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                public void SetButtonType (ButtonType type)
 
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                {
 
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                        Button b = (Button) Frontend;
 
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                        SetContent (b.Label, WidgetRegistry.GetBackend (b.Image), b.ImagePosition);
 
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                }
 
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                public override void EnableEvent (object eventId)
 
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                {
 
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                        base.EnableEvent (eventId);
 
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                        if (eventId is ButtonEvent) {
 
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                                switch ((ButtonEvent)eventId) {
 
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                                case ButtonEvent.Clicked: Widget.Clicked += HandleWidgetClicked; break;
 
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                                }
 
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                        }
 
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                }
 
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                public override void DisableEvent (object eventId)
 
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                {
 
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                        base.DisableEvent (eventId);
 
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                        if (eventId is ButtonEvent) {
 
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                                switch ((ButtonEvent)eventId) {
 
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                                case ButtonEvent.Clicked: Widget.Clicked -= HandleWidgetClicked; break;
 
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                                }
 
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                        }
 
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                }
 
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                void HandleWidgetClicked (object sender, EventArgs e)
 
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                {
 
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                        if (!ignoreClickEvents) {
 
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                                Toolkit.Invoke (delegate {
 
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                                        EventSink.OnClicked ();
 
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                                });
 
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                        }
 
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                }
 
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                bool miniMode;
 
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                protected void SetMiniMode (bool miniMode)
 
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                {
 
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//                      Gtk.Rc.ParseString ("style \"Xwt.GtkBackend.CustomButton\" {\n GtkButton::inner-border = {0,0,0,0} GtkButton::child-displacement-x = {0} GtkButton::child-displacement-y = {0}\n }\n");
 
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//                      Gtk.Rc.ParseString ("widget \"*.Xwt.GtkBackend.CustomButton\" style  \"Xwt.GtkBackend.CustomButton\"\n");
 
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//                      Name = "Xwt.GtkBackend.CustomButton";
 
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                        if (this.miniMode == miniMode)
 
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                                return;
 
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                        this.miniMode = miniMode;
 
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                        if (miniMode) {
 
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                                Widget.ExposeEvent += HandleExposeEvent;
 
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                                Widget.SizeAllocated += HandleSizeAllocated;
 
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                                Widget.SizeRequested += HandleSizeRequested;
 
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                        }
 
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                        Widget.QueueResize ();
 
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                }
 
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                void HandleSizeRequested (object o, Gtk.SizeRequestedArgs args)
 
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                {
 
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                        args.Requisition = Widget.Child.SizeRequest ();
 
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                }
 
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                [GLib.ConnectBefore]
 
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                void HandleSizeAllocated (object o, Gtk.SizeAllocatedArgs args)
 
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                {
 
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                        Widget.Child.SizeAllocate (args.Allocation);
 
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                        args.RetVal = true;
 
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                }
 
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                [GLib.ConnectBefore]
 
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                void HandleExposeEvent (object o, Gtk.ExposeEventArgs args)
 
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                {
 
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                        var gc = Widget.Style.BackgroundGC (Widget.State);
 
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                        Widget.GdkWindow.DrawRectangle (gc, true, Widget.Allocation);
 
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                        Widget.PropagateExpose (Widget.Child, args.Event);
 
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                        args.RetVal = true;
 
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                }
 
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        }
 
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}
 
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