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added Button object

This commit is contained in:
maroy 2005-01-25 21:35:30 +00:00
parent b75da7e43f
commit 7a9b34e4e8
14 changed files with 717 additions and 5 deletions
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5
livesupport/modules/widgets/etc/Makefile.in
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@ -21,7 +21,7 @@
#
#
# Author : $Author: maroy $
# Version : $Revision: 1.1 $
# Version : $Revision: 1.2 $
# Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/widgets/etc/Makefile.in,v $
#
# @configure_input@
@ -106,7 +106,8 @@ LDFLAGS = @LDFLAGS@ -pthread \
#-------------------------------------------------------------------------------
# Dependencies
#-------------------------------------------------------------------------------
WIDGETS_LIB_OBJS = ${TMP_DIR}/ImageButton.o
WIDGETS_LIB_OBJS = ${TMP_DIR}/ImageButton.o \
${TMP_DIR}/Button.o
TEST_EXE_OBJS = ${TMP_DIR}/TestWindow.o \
${TMP_DIR}/main.o

290
livesupport/modules/widgets/include/LiveSupport/Widgets/Button.h Normal file
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@ -0,0 +1,290 @@
/*------------------------------------------------------------------------------
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/Button.h,v $
------------------------------------------------------------------------------*/
#ifndef LiveSupport_Widgets_Button_h
#define LiveSupport_Widgets_Button_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>
#include <gtkmm/label.h>
#include "LiveSupport/Core/Ptr.h"
namespace LiveSupport {
namespace Widgets {
using namespace LiveSupport::Core;
/* ================================================================ constants */
/* =================================================================== macros */
/* =============================================================== data types */
/**
* A button holding a text.
*
* @author $Author: maroy $
* @version $Revision: 1.1 $
*/
class Button : 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 text displayed inside the button.
*/
Ptr<Gtk::Label>::Ref label;
/**
* The state of the button.
*/
State state;
/**
* The left image for the passive state of the button.
*/
Glib::RefPtr<Gdk::Pixbuf> passiveImageLeft;
/**
* The center image for the passive state of the button.
*/
Glib::RefPtr<Gdk::Pixbuf> passiveImageCenter;
/**
* The right image for the passive state of the button.
*/
Glib::RefPtr<Gdk::Pixbuf> passiveImageRight;
/**
* The left image of the button, when the mouse hovers above it.
*/
Glib::RefPtr<Gdk::Pixbuf> rollImageLeft;
/**
* The center image of the button, when the mouse hovers above it.
*/
Glib::RefPtr<Gdk::Pixbuf> rollImageCenter;
/**
* The right image of the button, when the mouse hovers above it.
*/
Glib::RefPtr<Gdk::Pixbuf> rollImageRight;
/**
* Default constructor.
*/
Button(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 state.
*
* @param label the text to display in the button
* @param leftImage the left image for the button
* @param centerImage the center image for the button
* @param rightImage the right image for the button
*/
Button(const Glib::ustring & label,
Glib::RefPtr<Gdk::Pixbuf> leftImage,
Glib::RefPtr<Gdk::Pixbuf> centerImage,
Glib::RefPtr<Gdk::Pixbuf> rightImage) throw ();
/**
* Constructor, with a rollover state.
* Passive and rollover images are expected to be of the same size.
*
* @param label the text to display in the button
* @param passiveImageLeft the left image for the button, passive
* @param passiveImageCenter the center image for the button, passive
* @param passiveImageRight the right image for the button, passive
* @param rollImageLeft the left image for the button, onmouseover
* @param rollImageCenter the center image for the button, onmouseover
* @param rollImageRight the right image for the button, onmouseover
*/
Button(const Glib::ustring & label,
Glib::RefPtr<Gdk::Pixbuf> passiveImageLeft,
Glib::RefPtr<Gdk::Pixbuf> passiveImageCenter,
Glib::RefPtr<Gdk::Pixbuf> passiveImageRight,
Glib::RefPtr<Gdk::Pixbuf> rollImageLeft,
Glib::RefPtr<Gdk::Pixbuf> rollImageCenter,
Glib::RefPtr<Gdk::Pixbuf> rollImageRight) throw ();
/**
* A virtual destructor.
*/
virtual
~Button(void) throw ();
};
/* ================================================= external data structures */
/* ====================================================== function prototypes */
} // namespace Widgets
} // namespace LiveSupport
#endif // LiveSupport_Widgets_Button_h

387
livesupport/modules/widgets/src/Button.cxx Normal file
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@ -0,0 +1,387 @@
/*------------------------------------------------------------------------------
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/src/Button.cxx,v $
------------------------------------------------------------------------------*/
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#include "LiveSupport/Widgets/Button.h"
using namespace LiveSupport::Core;
using namespace LiveSupport::Widgets;
/* =================================================== local data structures */
/* ================================================ local constants & macros */
/* =============================================== local function prototypes */
/* ============================================================= module code */
/*------------------------------------------------------------------------------
* Constructor.
*----------------------------------------------------------------------------*/
Button :: Button(const Glib::ustring & label,
Glib::RefPtr<Gdk::Pixbuf> leftImage,
Glib::RefPtr<Gdk::Pixbuf> centerImage,
Glib::RefPtr<Gdk::Pixbuf> rightImage)
throw ()
{
set_flags(Gtk::NO_WINDOW);
state = passiveState;
this->passiveImageLeft = leftImage;
this->passiveImageCenter = centerImage;
this->passiveImageRight = rightImage;
this->rollImageLeft.clear();
this->rollImageCenter.clear();
this->rollImageRight.clear();
this->label.reset(new Gtk::Label(label));
this->label->set_parent(*this);
}
/*------------------------------------------------------------------------------
* Constructor.
*----------------------------------------------------------------------------*/
Button :: Button(const Glib::ustring & label,
Glib::RefPtr<Gdk::Pixbuf> passiveImageLeft,
Glib::RefPtr<Gdk::Pixbuf> passiveImageCenter,
Glib::RefPtr<Gdk::Pixbuf> passiveImageRight,
Glib::RefPtr<Gdk::Pixbuf> rollImageLeft,
Glib::RefPtr<Gdk::Pixbuf> rollImageCenter,
Glib::RefPtr<Gdk::Pixbuf> rollImageRight)
throw ()
{
set_flags(Gtk::NO_WINDOW);
state = passiveState;
this->passiveImageLeft = passiveImageLeft;
this->passiveImageCenter = passiveImageCenter;
this->passiveImageRight = passiveImageRight;
this->rollImageLeft = rollImageLeft;
this->rollImageCenter = rollImageCenter;
this->rollImageRight = rollImageRight;
this->label.reset(new Gtk::Label(label));
this->label->set_parent(*this);
}
/*------------------------------------------------------------------------------
* Destructor.
*----------------------------------------------------------------------------*/
Button :: ~Button(void) throw ()
{
}
/*------------------------------------------------------------------------------
* Handle the size request event.
*----------------------------------------------------------------------------*/
void
Button :: on_size_request(Gtk::Requisition* requisition) throw ()
{
*requisition = Gtk::Requisition();
Gtk::Requisition labelRequisition = label->size_request();;
requisition->width = passiveImageLeft->get_width()
+ labelRequisition.width
+ passiveImageRight->get_width();
requisition->height = passiveImageCenter->get_height();
}
/*------------------------------------------------------------------------------
* Handle the size allocate event.
* We will not be given heights or widths less than we have requested,
* though we might get more.
*----------------------------------------------------------------------------*/
void
Button :: on_size_allocate(Gtk::Allocation& allocation) throw ()
{
set_allocation(allocation);
if (gdkWindow) {
gdkWindow->move_resize( allocation.get_x(),
allocation.get_y(),
allocation.get_width(),
allocation.get_height() );
}
Gtk::Allocation labelAlloc;
labelAlloc.set_x(passiveImageLeft->get_width());
labelAlloc.set_y((allocation.get_height()
- passiveImageCenter->get_height())
/ 2);
labelAlloc.set_width(allocation.get_width()
- passiveImageLeft->get_width()
- passiveImageRight->get_width());
labelAlloc.set_height(passiveImageCenter->get_height());
label->size_allocate(labelAlloc);
}
/*------------------------------------------------------------------------------
* Execute a function on all the children.
* As this widget has no children, don't do anything.
*----------------------------------------------------------------------------*/
void
Button :: forall_vfunc(gboolean includeInternals,
GtkCallback callback,
gpointer callbackData) throw ()
{
callback((GtkWidget*) label->gobj(), callbackData);
}
/*------------------------------------------------------------------------------
* Handle the add child widget event.
* As this widget has no children, don't do anything.
*----------------------------------------------------------------------------*/
void
Button :: on_add(Gtk::Widget* child) throw ()
{
}
/*------------------------------------------------------------------------------
* Handle the remove child widget event.
* As this widget has no children, don't do anything.
*----------------------------------------------------------------------------*/
void
Button :: on_remove(Gtk::Widget* child) throw ()
{
}
/*------------------------------------------------------------------------------
* Return what kind of widgets can be added to this container.
* As this widget has no children, return G_TYPE_NONE always.
*----------------------------------------------------------------------------*/
GtkType
Button :: child_type_vfunc() const throw ()
{
return G_TYPE_NONE;
}
/*------------------------------------------------------------------------------
* Handle the map event.
*----------------------------------------------------------------------------*/
void
Button :: on_map() throw ()
{
Gtk::Button::on_map();
}
/*------------------------------------------------------------------------------
* Handle the unmap event.
*----------------------------------------------------------------------------*/
void
Button :: on_unmap() throw ()
{
Gtk::Button::on_unmap();
}
/*------------------------------------------------------------------------------
* Handle the realize event.
*----------------------------------------------------------------------------*/
void
Button :: on_realize() throw ()
{
Gtk::Button::on_realize();
if (!gdkWindow) {
// create the Gdk::Window, if it didn't exist before
GdkWindowAttr attributes;
memset(&attributes, 0, sizeof(attributes));
Gtk::Allocation allocation = get_allocation();
// set initial position and size of the Gdk::Window
attributes.x = allocation.get_x();
attributes.y = allocation.get_y();
attributes.width = allocation.get_width();
attributes.height = allocation.get_height();
attributes.event_mask = get_events () | Gdk::EXPOSURE_MASK;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
gdkWindow = Gdk::Window::create(get_window(),
&attributes,
GDK_WA_X | GDK_WA_Y);
unset_flags(Gtk::NO_WINDOW);
set_window(gdkWindow);
// make the widget receive expose events
gdkWindow->set_user_data(gobj());
// allocate a GC for use in on_expose_event()
gc = Gdk::GC::create(gdkWindow);
}
}
/*------------------------------------------------------------------------------
* Handle the unrealize event.
*----------------------------------------------------------------------------*/
void
Button :: on_unrealize() throw ()
{
gdkWindow.clear();
gc.clear();
Gtk::Button::on_unrealize();
}
/*------------------------------------------------------------------------------
* Handle the expose event.
*----------------------------------------------------------------------------*/
bool
Button :: on_expose_event(GdkEventExpose* event) throw ()
{
if (event->count > 0) {
return false;
}
if (gdkWindow) {
gdkWindow->clear();
Glib::RefPtr<Gdk::Pixbuf> leftImage;
Glib::RefPtr<Gdk::Pixbuf> centerImage;
Glib::RefPtr<Gdk::Pixbuf> rightImage;
switch (state) {
case passiveState:
default:
leftImage = passiveImageLeft;
centerImage = passiveImageCenter;
rightImage = passiveImageRight;
break;
case rollState:
leftImage = rollImageLeft ? rollImageLeft : passiveImageLeft;
centerImage = rollImageCenter ? rollImageCenter
: passiveImageCenter;
rightImage = rollImageRight ? rollImageRight
: passiveImageRight;
break;
}
// draw everything vertically centered, but horizontally stretched
// out
int x = 0;
int y = (get_height() - centerImage->get_height()) / 2;
int maxX = get_width() - rightImage->get_width();
// draw the left image
leftImage->render_to_drawable(gdkWindow,
get_style()->get_black_gc(),
0, 0,
x,
y,
leftImage->get_width(),
leftImage->get_height(),
Gdk::RGB_DITHER_NONE,
0, 0);
// draw as many center images, as necessary
for (x = leftImage->get_width();
x < maxX;
x += centerImage->get_width()) {
centerImage->render_to_drawable(gdkWindow,
get_style()->get_black_gc(),
0, 0,
x,
y,
centerImage->get_width(),
centerImage->get_height(),
Gdk::RGB_DITHER_NONE,
0, 0);
}
// draw the right image
rightImage->render_to_drawable(gdkWindow,
get_style()->get_black_gc(),
0, 0,
maxX,
y,
rightImage->get_width(),
rightImage->get_height(),
Gdk::RGB_DITHER_NONE,
0, 0);
}
Gtk::Container::on_expose_event(event);
return false;
}
/*------------------------------------------------------------------------------
* Handle the mouse enter event.
*----------------------------------------------------------------------------*/
void
Button :: on_enter(void) throw ()
{
state = rollState;
Gtk::Button::on_enter();
}
/*------------------------------------------------------------------------------
* Handle the mouse leave event.
*----------------------------------------------------------------------------*/
void
Button :: on_leave(void) throw ()
{
state = passiveState;
Gtk::Button::on_leave();
}

30
livesupport/modules/widgets/src/TestWindow.cxx
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@ -22,7 +22,7 @@
Author : $Author: maroy $
Version : $Revision: 1.1 $
Version : $Revision: 1.2 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/widgets/src/TestWindow.cxx,v $
------------------------------------------------------------------------------*/
@ -55,6 +55,7 @@ using namespace LiveSupport::Widgets;
TestWindow :: TestWindow (void)
throw ()
{
// init the imageButton
Glib::RefPtr<Gdk::Pixbuf> passiveImage;
Glib::RefPtr<Gdk::Pixbuf> rollImage;
@ -63,8 +64,35 @@ TestWindow :: TestWindow (void)
imageButton.reset(new ImageButton(passiveImage, rollImage));
// init the button
Glib::RefPtr<Gdk::Pixbuf> passiveImageLeft;
Glib::RefPtr<Gdk::Pixbuf> passiveImageCenter;
Glib::RefPtr<Gdk::Pixbuf> passiveImageRight;
Glib::RefPtr<Gdk::Pixbuf> rollImageLeft;
Glib::RefPtr<Gdk::Pixbuf> rollImageCenter;
Glib::RefPtr<Gdk::Pixbuf> rollImageRight;
passiveImageLeft = Gdk::Pixbuf::create_from_file("var/button_left.png");
passiveImageCenter = Gdk::Pixbuf::create_from_file("var/button_centre.png");
passiveImageRight = Gdk::Pixbuf::create_from_file("var/button_right.png");
rollImageLeft = Gdk::Pixbuf::create_from_file("var/button_left_roll.png");
rollImageCenter = Gdk::Pixbuf::create_from_file(
"var/button_centre_roll.png");
rollImageRight = Gdk::Pixbuf::create_from_file(
"var/button_right_roll.png");
button.reset(new Button("Hello, World!",
passiveImageLeft,
passiveImageCenter,
passiveImageRight,
rollImageLeft,
rollImageCenter,
rollImageRight));
// create and set up the layout
layout.reset(new Gtk::Table());
layout->attach(*imageButton, 0, 1, 0, 1);
layout->attach(*button, 0, 1, 1, 2);
add(*layout);
show_all();

10
livesupport/modules/widgets/src/TestWindow.h
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@ -22,7 +22,7 @@
Author : $Author: maroy $
Version : $Revision: 1.1 $
Version : $Revision: 1.2 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/widgets/src/TestWindow.h,v $
------------------------------------------------------------------------------*/
@ -45,6 +45,7 @@
#include "LiveSupport/Core/Ptr.h"
#include "LiveSupport/Widgets/Button.h"
#include "LiveSupport/Widgets/ImageButton.h"
@ -65,7 +66,7 @@ using namespace LiveSupport::Core;
* A window, enabling interactive testing of UI components.
*
* @author $Author: maroy $
* @version $Revision: 1.1 $
* @version $Revision: 1.2 $
*/
class TestWindow : public Gtk::Window
{
@ -80,6 +81,11 @@ class TestWindow : public Gtk::Window
*/
Ptr<ImageButton>::Ref imageButton;
/**
* A button.
*/
Ptr<Button>::Ref button;
public:
/**

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