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/*
* this file was largely taken from the oxygen gtk engine
* Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
*
* the tabwidget data code is largely inspired from the gtk redmond engine
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or(at your option ) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "tdegtk-tabwidgetdata.h"
#include "tdegtk-utils.h"
#include "config.h"
#include <gtk/gtk.h>
#include <cassert>
#include <iostream>
//________________________________________________________________________________
void TabWidgetData::connect( GtkWidget* widget )
{
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::connect - " << widget << std::endl;
#endif
_target = widget;
_motionId.connect( G_OBJECT(widget), "motion-notify-event", G_CALLBACK( motionNotifyEvent ), this );
_leaveId.connect( G_OBJECT(widget), "leave-notify-event", G_CALLBACK( leaveNotifyEvent ), this );
_pageAddedId.connect( G_OBJECT(widget), "page-added", G_CALLBACK( pageAddedEvent ), this );
updateRegisteredChildren( widget );
}
//________________________________________________________________________________
void TabWidgetData::disconnect( GtkWidget* widget )
{
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::disconnect - " << widget << std::endl;
#endif
_target = 0L;
_motionId.disconnect();
_leaveId.disconnect();
_pageAddedId.disconnect();
// disconnect all children
for( ChildDataMap::iterator iter = _childrenData.begin(); iter != _childrenData.end(); ++iter )
{ iter->second.disconnect(); }
_childrenData.clear();
}
//________________________________________________________________________________
void TabWidgetData::updateHoveredTab( GtkWidget* widget )
{
if( !widget ) widget = _target;
if( !widget ) return;
// get pointer position
int xPointer(0), yPointer(0);
GdkDeviceManager* manager( gdk_display_get_device_manager( gtk_widget_get_display( widget ) ) );
GdkDevice* pointer( gdk_device_manager_get_client_pointer( manager ) );
if( !pointer ) return;
gdk_window_get_device_position( gtk_widget_get_window( widget ), pointer, &xPointer, &yPointer, 0L );
// loop over tabs and check matching
for( unsigned int i = (unsigned int)Gtk::gtk_notebook_find_first_tab( widget ); i < _tabRects.size(); i++ )
{
if( Gtk::gdk_rectangle_contains( &_tabRects[i], xPointer, yPointer ) )
{ setHoveredTab( widget, i ); return; }
}
// reset hovered tab
setHoveredTab( widget, -1 );
return;
}
//________________________________________________________________________________
void TabWidgetData::updateTabRect( GtkWidget* widget, int index, const GdkRectangle& r )
{
// make sure the vector has the right size
if( !GTK_IS_NOTEBOOK( widget ) ) return;
GtkNotebook* notebook = GTK_NOTEBOOK( widget );
_tabRects.resize( gtk_notebook_get_n_pages( notebook ), defaultRect() );
// check index against number of tabs
if( index < 0 || index >= (int)_tabRects.size() )
{ return; }
// store rectangle
_tabRects[index]=r;
}
//________________________________________________________________________________
void TabWidgetData::setDirty( bool value )
{
if( _dirty == value ) return;
_dirty = value;
if( _dirty && _target )
{
// we should only update the tabbar rect here
GdkRectangle updateRect;
Gtk::gtk_notebook_get_tabbar_rect( GTK_NOTEBOOK( _target ), &updateRect );
Gtk::gtk_widget_queue_draw( _target, &updateRect );
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::setDirty - update: " << updateRect << std::endl;
#endif
}
}
//________________________________________________________________________________
bool TabWidgetData::isInTab( int x, int y ) const
{
// loop over tab rectangles and check.
for( RectangleList::const_iterator iter = _tabRects.begin(); iter != _tabRects.end(); ++iter )
{ if( Gtk::gdk_rectangle_contains( &(*iter), x, y ) ) return true; }
return false;
}
//________________________________________________________________________________
void TabWidgetData::setHoveredTab( GtkWidget* widget, int index )
{
if( _hoveredTab == index ) return;
_hoveredTab = index;
GdkRectangle updateRect( Gtk::gdk_rectangle() );
for( RectangleList::const_iterator iter = _tabRects.begin(); iter != _tabRects.end(); ++iter )
{ gdk_rectangle_union( &(*iter), &updateRect, &updateRect ); }
gtk_widget_queue_draw_area( widget, updateRect.x-4, updateRect.y-4, updateRect.width+8, updateRect.height+8 );
return;
}
//________________________________________________________________________________
gboolean TabWidgetData::motionNotifyEvent(GtkWidget* widget, GdkEventMotion*, gpointer data )
{
static_cast<TabWidgetData*>( data )->updateHoveredTab( widget );
return FALSE;
}
//________________________________________________________________________________
gboolean TabWidgetData::leaveNotifyEvent( GtkWidget* widget, GdkEventCrossing*, gpointer data )
{
// reset hovered tab
static_cast<TabWidgetData*>( data )->setHoveredTab( widget, -1 );
return FALSE;
}
//________________________________________________________________________________
void TabWidgetData::pageAddedEvent( GtkNotebook* parent, GtkWidget* child, guint, gpointer data)
{
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::pageAddedEvent - " << child << std::endl;
#endif
static_cast<TabWidgetData*>(data)->updateRegisteredChildren( GTK_WIDGET( parent ) );
}
//________________________________________________________________________________
void TabWidgetData::updateRegisteredChildren( GtkWidget* widget )
{
if( !widget ) widget = _target;
if( !widget ) return;
// cast to notebook and check against number of pages
if( GTK_IS_NOTEBOOK( widget ) )
{
GtkNotebook* notebook( GTK_NOTEBOOK( widget ) );
for( int i = 0; i < gtk_notebook_get_n_pages( notebook ); ++i )
{
// retrieve page and tab label
GtkWidget* page( gtk_notebook_get_nth_page( notebook, i ) );
registerChild( gtk_notebook_get_tab_label( notebook, page ) );
}
}
}
//________________________________________________________________________________
void TabWidgetData::registerChild( GtkWidget* widget )
{
// do nothing if child is invalid (might happen: not checked at calling stage)
if( !widget ) return;
// make sure widget is not already in map
if( _childrenData.find( widget ) == _childrenData.end() )
{
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::registerChild - " << widget << std::endl;
#endif
// allocate new ChildData
ChildData data;
data._destroyId.connect( G_OBJECT(widget), "destroy", G_CALLBACK( childDestroyNotifyEvent ), this );
data._enterId.connect( G_OBJECT(widget), "enter-notify-event", G_CALLBACK( childCrossingNotifyEvent ), this );
data._leaveId.connect( G_OBJECT(widget), "leave-notify-event", G_CALLBACK( childCrossingNotifyEvent ), this );
if( GTK_IS_CONTAINER( widget ) )
{ data._addId.connect( G_OBJECT(widget), "add", G_CALLBACK( childAddedEvent ), this ); }
// and insert in map
_childrenData.insert( std::make_pair( widget, data ) );
}
/*
also insert widget's children, recursively.
that should take care of buttons in tabs and other fancy stuff that applications mght do
*/
if( GTK_IS_CONTAINER( widget ) )
{
GList *children( gtk_container_get_children( GTK_CONTAINER(widget) ) );
for( GList* child = g_list_first(children); child; child = g_list_next(child) )
{ registerChild( GTK_WIDGET( child->data ) ); }
if( children ) g_list_free( children );
}
}
//________________________________________________________________________________
void TabWidgetData::unregisterChild( GtkWidget* widget )
{
ChildDataMap::iterator iter( _childrenData.find( widget ) );
if( iter == _childrenData.end() ) return;
#if TDEGTK_DEBUG
std::cerr << "TDEGTK::TabWidgetData::unregisterChild - " << widget << std::endl;
#endif
iter->second.disconnect();
_childrenData.erase( iter );
}
//____________________________________________________________________________________________
gboolean TabWidgetData::childDestroyNotifyEvent( GtkWidget* widget, gpointer data )
{
static_cast<TabWidgetData*>(data)->unregisterChild( widget );
return FALSE;
}
//____________________________________________________________________________________________
void TabWidgetData::childAddedEvent( GtkContainer* parent, GtkWidget*, gpointer data )
{
static_cast<TabWidgetData*>(data)->updateRegisteredChildren();
return;
}
//____________________________________________________________________________________________
gboolean TabWidgetData::childCrossingNotifyEvent( GtkWidget* widget, GdkEventCrossing*, gpointer data )
{
// retrieve widget's parent and check type
static_cast<TabWidgetData*>(data)->updateHoveredTab();
return FALSE;
}
//____________________________________________________________________________________________
void TabWidgetData::ChildData::disconnect( void )
{
_destroyId.disconnect();
_enterId.disconnect();
_leaveId.disconnect();
_addId.disconnect();
}
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