A few widgets are now working somewhat

1 files changed, 231 insertions, 0 deletions

diff --git a/tdegtk/tdegtk-widgetlookup.cpp b/tdegtk/tdegtk-widgetlookup.cpp
new file mode 100644
index 0000000..79ed0e9
--- /dev/null
+++ b/tdegtk/tdegtk-widgetlookup.cpp
@@ -0,0 +1,231 @@
+/*
+* this file was largely taken from the oxygen gtk engine
+* Copyright (c) 2010 Hugo Pereira Da Costa <[email protected]>
+* Copyright (c) 2010 Ruslan Kabatsayev <[email protected]>
+*
+* Hook-setup code provided by Ruslan
+*
+* 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-widgetlookup.h"
+#include "config.h"
+
+#include <iostream>
+#include <cairo/cairo-gobject.h>
+
+// #define TDEGTK_DEBUG 1
+
+    //__________________________________________________________________
+    WidgetLookup::WidgetLookup( void ):
+        _hooksInitialized( false ),
+        _context( 0L )
+    {}
+
+
+    //_____________________________________________________
+    WidgetLookup::~WidgetLookup( void )
+    {
+
+        // disconnect hooks
+        _drawHook.disconnect();
+
+    }
+
+    //_____________________________________________________
+    void WidgetLookup::initializeHooks( void )
+    {
+
+        #if TDEGTK_DEBUG
+        std::cerr << "Oxygen::WidgetLookup::initializeHooks" << std::endl;
+        #endif
+
+        if( _hooksInitialized ) return;
+
+        // install hook and test
+        if( !_drawHook.connect( "draw", (GSignalEmissionHook)drawHook, this ) ) return;
+
+        // set initialization flag
+        _hooksInitialized = true;
+
+        return;
+
+    }
+
+    //_____________________________________________________
+    GtkWidget* WidgetLookup::find( cairo_t* context, const GtkWidgetPath* path ) const
+    {
+
+        // check path
+        if( !path ) return 0L;
+
+        // get length and check
+        const gint length( gtk_widget_path_length( path ) );
+        if( length < 1 ) return 0L;
+
+        // lookup last type
+        return find( context, gtk_widget_path_iter_get_object_type( path, length-1 ) );
+
+    }
+
+    //_____________________________________________________
+    GtkWidget* WidgetLookup::find( cairo_t* context, GType type ) const
+    {
+        // check context
+        if( context != _context )
+        {
+            #if TDEGTK_DEBUG
+            std::cerr << "Oxygen::WidgetLookup::find - invalid context: " << context << std::endl;
+            #endif
+            return 0L;
+        }
+
+        #if TDEGTK_DEBUG
+        std::cerr
+            << "Oxygen::WidgetLookup::find -"
+            << " context: " << context
+            << " type: " << g_type_name( type )
+            << std::endl;
+        #endif
+
+        // look for type in stored widgets
+        /* we loop backward, since last added widgets are more likely to be looked up */
+        for( WidgetList::const_reverse_iterator iter = _widgets.rbegin(); iter != _widgets.rend(); ++iter )
+        {
+            // compare types and return if matched
+            if( G_OBJECT_TYPE( *iter ) == type )
+            {
+                #if TDEGTK_DEBUG
+                std::cerr
+                    << "Oxygen::WidgetLookup::find -"
+                    << " context: " << context
+                    << " type: " << g_type_name( type )
+                    << " found: " << *iter
+                    << std::endl;
+                #endif
+                return *iter;
+            }
+        }
+
+        #if TDEGTK_DEBUG
+        std::cerr
+            << "Oxygen::WidgetLookup::find -"
+            << " context: " << context
+            << " type: " << g_type_name( type )
+            << " - no match found"
+            << std::endl;
+        #endif
+
+        return 0L;
+
+    }
+
+    //_____________________________________________________
+    void WidgetLookup::bind( GtkWidget* widget, cairo_t* context )
+    {
+        // check if context has changed and clear widgets if yes
+        if( context != _context )
+        {
+
+            #if TDEGTK_DEBUG
+            std::cerr
+                << "Oxygen::WidgetLookup::bind -"
+                << " context: " << _context
+                << " widgets: " << _widgets.size()
+                << std::endl;
+            #endif
+
+            _context = context;
+            _widgets.clear();
+        }
+
+        _widgets.push_back( widget );
+
+        // add to all widgets map
+        if( _allWidgets.find( widget ) == _allWidgets.end() )
+        {
+            Signal destroyId;
+            destroyId.connect( G_OBJECT( widget ), "destroy", G_CALLBACK( destroyNotifyEvent ), this );
+            _allWidgets.insert( std::make_pair( widget, destroyId ) );
+        }
+
+    }
+
+    //____________________________________________________________________________________________
+    void WidgetLookup::unregisterWidget( GtkWidget* widget )
+    {
+
+        #if TDEGTK_DEBUG
+        std::cerr << "Oxygen::WidgetLookup::unregisterWidget - " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")" << std::endl;
+        #endif
+
+        // find in map
+        WidgetMap::iterator iter( _allWidgets.find( widget ) );
+        assert( iter != _allWidgets.end() );
+
+        // disconnect signal
+        iter->second.disconnect();
+
+        // erase from lists
+        _allWidgets.erase( widget );
+        _widgets.remove( widget );
+
+    }
+
+    //_____________________________________________________
+    gboolean WidgetLookup::drawHook( GSignalInvocationHint*, guint numParams, const GValue* params, gpointer data )
+    {
+
+        // check number of parameters
+        if( numParams < 2 ) return FALSE;
+
+        // get widget from params
+        GtkWidget* widget( GTK_WIDGET( g_value_get_object( params ) ) );
+
+        // check type
+        if( !GTK_IS_WIDGET( widget ) ) return FALSE;
+
+        // check second parameter type.
+        if( !G_VALUE_HOLDS( params+1, CAIRO_GOBJECT_TYPE_CONTEXT ) )
+        { return FALSE; }
+
+        // retrieve context and cast
+        cairo_t* context( static_cast<cairo_t*>( g_value_get_boxed(params+1) ) );
+
+        #if TDEGTK_DEBUG
+        std::cerr
+            << "Oxygen::WidgetLookup::drawHook -"
+            << " widget: " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")"
+            << " context: " << context
+            << std::endl;
+        #endif
+
+        // bind widget and context
+        static_cast<WidgetLookup*>( data )->bind( widget, context );
+
+        return TRUE;
+
+    }
+
+
+    //____________________________________________________________________________________________
+    gboolean WidgetLookup::destroyNotifyEvent( GtkWidget* widget, gpointer data )
+    {
+        static_cast<WidgetLookup*>(data)->unregisterWidget( widget );
+        return FALSE;
+    }
+
+