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added widgets module

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maroy 2005-01-25 20:27:15 +00:00
parent 0a318234f9
commit b75da7e43f
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livesupport/modules/widgets/include/LiveSupport/Widgets/ImageButton.h Normal file
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/*------------------------------------------------------------------------------
Copyright (c) 2004 Media Development Loan Fund
This file is part of the LiveSupport project.
http://livesupport.campware.org/
To report bugs, send an e-mail to bugs@campware.org
LiveSupport is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LiveSupport is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiveSupport; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: maroy $
Version : $Revision: 1.1 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/widgets/include/LiveSupport/Widgets/ImageButton.h,v $
------------------------------------------------------------------------------*/
#ifndef LiveSupport_Widgets_ImageButton_h
#define LiveSupport_Widgets_ImageButton_h
#ifndef __cplusplus
#error This is a C++ include file
#endif
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#include <gtkmm/button.h>
namespace LiveSupport {
namespace Widgets {
/* ================================================================ constants */
/* =================================================================== macros */
/* =============================================================== data types */
/**
* A button that is represented by a bitmap totally.
* The button is fixed in size, which is determined by the images used
* to represent it.
*
* @author $Author: maroy $
* @version $Revision: 1.1 $
*/
class ImageButton : public Gtk::Button
{
private:
/**
* The possible states of the button.
*/
typedef enum { passiveState, rollState, selectedState } State;
/**
* The Gdk::Window object, used to draw inside this button.
*/
Glib::RefPtr<Gdk::Window> gdkWindow;
/**
* The Graphics Context, used to draw.
*/
Glib::RefPtr<Gdk::GC> gc;
/**
* The state of the button.
*/
State state;
/**
* The image of the button itself, in passive state
*/
Glib::RefPtr<Gdk::Pixbuf> passiveImage;
/**
* The image of the button, when the mouse hovers above it.
*/
Glib::RefPtr<Gdk::Pixbuf> rollImage;
/**
* Default constructor.
*/
ImageButton(void) throw ()
{
}
protected:
/**
* Handle the size request event.
*
* @param requisition the size request, also being the ouptut
* parameter.
*/
virtual void
on_size_request(Gtk::Requisition* requisition)
throw ();
/**
* Handle the size allocate event.
*
* @param allocation the allocated size.
*/
virtual void
on_size_allocate(Gtk::Allocation& allocation)
throw ();
/**
* Handle the map event.
*/
virtual void
on_map() throw ();
/**
* Handle the unmap event.
*/
virtual void
on_unmap() throw ();
/**
* Handle the realize event.
*/
virtual void
on_realize() throw ();
/**
* Handle the unrealize event.
*/
virtual void
on_unrealize() throw ();
/**
* Handle the expose event.
*
* @param event the actual expose event recieved.
* @return true if something was drawn (?)
*/
virtual bool
on_expose_event(GdkEventExpose* event) throw ();
/**
* Execute a function on all children of this container.
*
* @param includeInternals true if the callback function should
* also be called on the internals, false otherwise.
* @param callback the callback function to execute on the children.
* @param callbackData the data passed to the callback function.
*/
virtual void
forall_vfunc(gboolean includeInternals,
GtkCallback callback,
gpointer callbackData)
throw ();
/**
* Handle the add event.
*
* @param child the child being added to the widget.
*/
virtual void
on_add(Gtk::Widget* child) throw ();
/**
* Handle the remove event.
*
* @param child the child to remove from the widget.
*/
virtual void
on_remove(Gtk::Widget* child) throw ();
/**
* Tell what kind of children this container accepts.
*
* @return the type of children this container accepts.
*/
virtual GtkType
child_type_vfunc() const throw ();
/**
* Handle the event when the mouse enters the button area.
*/
virtual void
on_enter(void) throw ();
/**
* Handle the event when the mouse leaves the button area.
*/
virtual void
on_leave(void) throw ();
public:
/**
* Constructor, with only one image.
*
* @param image the image of the button.
*/
ImageButton(Glib::RefPtr<Gdk::Pixbuf> image) throw ();
/**
* Constructor, with a passive and a rollover image.
* The two images are assumed to be of the same size.
*
* @param passiveImage the passive image of the button.
* @param rollImage the image of the button when the mouse rolls
* over it.
*/
ImageButton(Glib::RefPtr<Gdk::Pixbuf> passiveImage,
Glib::RefPtr<Gdk::Pixbuf> rollImage) throw ();
/**
* A virtual destructor.
*/
virtual
~ImageButton(void) throw ();
};
/* ================================================= external data structures */
/* ====================================================== function prototypes */
} // namespace Widgets
} // namespace LiveSupport
#endif // LiveSupport_Widgets_ImageButton_h