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gtk3-tqt-engine/tdegtk/tdegtk-utils.cpp

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A few widgets are now working somewhat
12 years ago
/*
* this file was largely taken from the oxygen gtk engine
* Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
* Copyright (c) 2010 Ruslan Kabatsayev <b7.10110111@gmail.com>
*
* GdkPixbuf modification code from Walmis
* <http://gnome-look.org/content/show.php?content=77783&forumpage=3>
*
* 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-utils.h"
//#include "oxygengtktypenames.h"
#include "config.h"
#include <cmath>
#include <cstring>
#include <gtk/gtk.h>
#include <iostream>
#include <set>
//_____________________________________________________________________________
std::ostream& operator << ( std::ostream& out, const GtkWidgetPath* path )
{
if( !path )
{
out << " (null)";
} else {
for( gint pos=0; pos<gtk_widget_path_length( path ); ++pos )
{
const char* name( g_type_name( gtk_widget_path_iter_get_object_type( path, pos ) ) );
if(!name) break;
out << "/" << name;
}
}
return out;
}
//____________________________________________________________
void Gtk::gtk_container_adjust_buttons_state(GtkContainer* container,gpointer data)
{
if(GTK_IS_BUTTON(container))
{
int x(0),y(0);
GtkWidget* button=GTK_WIDGET(container);
GtkAllocation allocation( gtk_widget_get_allocation( button ) );
GdkDeviceManager* manager( gdk_display_get_device_manager( gtk_widget_get_display( button ) ) );
GdkDevice* pointer( gdk_device_manager_get_client_pointer( manager ) );
gdk_window_get_device_position( gtk_widget_get_window( button ), pointer, &x, &y, 0L);
if( !(x>0 && y>0 &&
x < allocation.width &&
y < allocation.height) && gtk_widget_get_state(button)==GTK_STATE_ACTIVE )
{ gtk_widget_set_state(button,GTK_STATE_NORMAL); }
gtk_button_set_relief(GTK_BUTTON(button),GTK_RELIEF_NORMAL);
gtk_widget_set_size_request(button,16,16);
return;
}
if(GTK_IS_CONTAINER(container))
{ gtk_container_foreach(container,(GtkCallback)gtk_container_adjust_buttons_state,0L); }
}
//____________________________________________________________
bool Gtk::gtk_widget_path_has_type( const GtkWidgetPath* path, GType type )
{
if( !path ) return false;
for( gint pos=0; pos<gtk_widget_path_length( path ); ++pos )
{
const GType local( gtk_widget_path_iter_get_object_type( path, pos ) );
if( local == type || g_type_is_a( local, type ) )
{ return true; }
}
return false;
}
//____________________________________________________________
bool Gtk::gtk_widget_is_applet( GtkWidget* widget )
{
if( !widget ) return false;
#if OXYGEN_DEBUG
std::cerr << "Gtk::gtk_widget_is_applet(): " << Gtk::gtk_widget_path(widget) << std::endl;
#endif
static const char* names[] =
{
"Panel",
"PanelWidget",
"PanelApplet",
"XfcePanelWindow",
0
};
// check widget name
std::string name( G_OBJECT_TYPE_NAME( widget ) );
for( unsigned int i = 0; names[i]; ++i )
{ if( g_object_is_a( G_OBJECT( widget ), names[i] ) || name.find( names[i] ) == 0 ) return true; }
// also check parent
if( GtkWidget* parent = gtk_widget_get_parent( widget ) )
{
name = G_OBJECT_TYPE_NAME( parent );
for( unsigned int i = 0; names[i]; ++i )
{ if( g_object_is_a( G_OBJECT( parent ), names[i] ) || name.find( names[i] ) == 0 ) return true; }
}
// also check first widget path element (needed for xfce panel)
std::string widgetPath=Gtk::gtk_widget_path(widget);
{
for( unsigned int i = 0; names[i]; ++i )
{
if( widgetPath.find(names[i]) != std::string::npos )
return true;
}
}
return false;
}
//____________________________________________________________
void Gtk::gtk_widget_print_tree( GtkWidget* widget )
{
if( !widget ) return;
std::cerr << "Oxygen::Gtk::gtk_widget_print_tree - widget: " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")" << std::endl;
while( ( widget = gtk_widget_get_parent( widget ) ) )
{ std::cerr << " parent: " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")" << std::endl; }
}
//________________________________________________________
bool Gtk::gdk_default_screen_is_composited( void )
{
GdkScreen* screen( gdk_screen_get_default() );
return (screen && gdk_screen_is_composited( screen ) );
}
//________________________________________________________
bool Gtk::gtk_widget_has_rgba( GtkWidget* widget )
{
if( !widget ) return false;
if( !gdk_default_screen_is_composited() ) return false;
return gdk_visual_has_rgba( gtk_widget_get_visual (widget) );
}
//________________________________________________________
bool Gtk::gdk_window_is_base( GdkWindow* window )
{
if( !GDK_IS_WINDOW( window ) ) return false;
GdkWindowTypeHint hint = gdk_window_get_type_hint( window );
#if OXYGEN_DEBUG
std::cerr << "Gtk::gdk_window_is_base - " << TypeNames::windowTypeHint( hint ) << std::endl;
#endif
return(
hint == GDK_WINDOW_TYPE_HINT_NORMAL ||
hint == GDK_WINDOW_TYPE_HINT_DIALOG ||
hint == GDK_WINDOW_TYPE_HINT_UTILITY );
}
//________________________________________________________
bool Gtk::gdk_window_nobackground( GdkWindow* window )
{
if( !GDK_IS_WINDOW( window ) ) return false;
GdkWindowTypeHint hint = gdk_window_get_type_hint( window );
return( hint == GDK_WINDOW_TYPE_HINT_COMBO || hint == GDK_WINDOW_TYPE_HINT_TOOLTIP );
}
//________________________________________________________
bool Gtk::gdk_window_has_rgba( GdkWindow* window )
{
if( !window ) return false;
if( !gdk_default_screen_is_composited() ) return false;
return gdk_visual_has_rgba( gdk_window_get_visual( window ) );
}
//________________________________________________________
bool Gtk::gdk_visual_has_rgba( GdkVisual* visual )
{
// check depth
if( gdk_visual_get_depth( visual ) != 32 ) return false;
// check red pixel
guint32 redMask;
gdk_visual_get_red_pixel_details( visual, &redMask, 0L, 0L );
if( redMask != 0xff0000 ) return false;
// check green pixel
guint32 greenMask;
gdk_visual_get_green_pixel_details( visual, &greenMask, 0L, 0L );
if( greenMask != 0x00ff00 ) return false;
// check blue pixel
guint32 blueMask;
gdk_visual_get_blue_pixel_details( visual, &blueMask, 0L, 0L );
if( blueMask != 0x0000ff ) return false;
return true;
}
//________________________________________________________
bool Gtk::g_object_is_a( const GObject* object, const std::string& typeName )
{
if( object )
{
const GType tmp( g_type_from_name( typeName.c_str() ) );
if( tmp )
{ return g_type_check_instance_is_a( (GTypeInstance*) object, tmp ); }
}
return false;
}
//________________________________________________________
std::string Gtk::gtk_widget_path( GtkWidget* widget )
{
if(GTK_IS_WIDGET(widget))
{
gchar* widgetPath;
gtk_widget_path( widget, 0L, &widgetPath, 0L);
const std::string out( widgetPath );
g_free( widgetPath );
return out;
}
return std::string("not-widget");
}
//________________________________________________________
GtkWidget* Gtk::gtk_widget_find_parent( GtkWidget* widget, GType type )
{
for( GtkWidget* parent = widget; parent; parent = gtk_widget_get_parent( parent ) )
{ if( G_TYPE_CHECK_INSTANCE_TYPE( parent, type ) ) return parent; }
return 0L;
}
//________________________________________________________
GtkWidget* Gtk::gtk_parent_groupbox( GtkWidget* widget )
{
for( GtkWidget* parent = widget; parent; parent = gtk_widget_get_parent( parent ) )
{ if( gtk_widget_is_groupbox( parent ) ) return parent; }
return 0L;
}
//________________________________________________________
bool Gtk::gtk_widget_is_parent( GtkWidget* widget, GtkWidget* potentialParent )
{
for( GtkWidget* parent = gtk_widget_get_parent( widget ); parent; parent = gtk_widget_get_parent( parent ) )
{ if( potentialParent==parent ) return true; }
return false;
}
//________________________________________________________
bool Gtk::gtk_parent_is_shadow_in( GtkWidget* widget )
{
for( GtkWidget* parent = gtk_widget_get_parent( widget ); parent; parent = gtk_widget_get_parent( parent ) )
{
if( GTK_IS_FRAME( parent ) && gtk_frame_get_shadow_type( GTK_FRAME( parent ) ) == GTK_SHADOW_IN ) return true;
if( GTK_IS_SCROLLED_WINDOW( parent ) && gtk_scrolled_window_get_shadow_type( GTK_SCROLLED_WINDOW( parent ) ) == GTK_SHADOW_IN ) return true;
}
return false;
}
//________________________________________________________
bool Gtk::gtk_button_is_flat( GtkWidget* widget )
{
if( !GTK_IS_BUTTON( widget ) ) return false;
return ( gtk_button_get_relief( GTK_BUTTON( widget ) ) == GTK_RELIEF_NONE );
}
//________________________________________________________
bool Gtk::gtk_button_is_header( GtkWidget* widget )
{ return GTK_IS_BUTTON( widget ) && gtk_parent_tree_view( widget ); }
//________________________________________________________
bool Gtk::gtk_button_is_in_path_bar( GtkWidget* widget )
{
if( !( GTK_IS_BUTTON( widget ) && gtk_widget_get_parent( widget ) ) ) return false;
std::string name(G_OBJECT_TYPE_NAME( gtk_widget_get_parent( widget ) ) );
return name == "GtkPathBar" || name == "NautilusPathBar";
}
//________________________________________________________
bool Gtk::gtk_path_bar_button_is_last( GtkWidget* widget )
{
GtkWidget* parent( gtk_widget_get_parent( widget ) );
// get parent and check type
if( !( parent && GTK_IS_CONTAINER( parent ) ) ) return false;
// get children
GList* children( gtk_container_get_children( GTK_CONTAINER( parent ) ) );
/*
for some reason, pathbar buttons are ordered in the container in reverse order.
meaning that the last button (in the pathbar) is stored first in the list.
*/
bool result = (widget == g_list_first( children )->data );
if( children ) g_list_free( children );
return result;
}
//________________________________________________________
GtkWidget* Gtk::gtk_button_find_image(GtkWidget* button)
{
// check widget type
if(!GTK_IS_CONTAINER(button)) return 0L;
GtkWidget* result( 0L );
GList* children( gtk_container_get_children( GTK_CONTAINER( button ) ) );
for( GList *child = g_list_first( children ); child; child = g_list_next( child ) )
{
if( GTK_IS_IMAGE( child->data ) )
{
result = GTK_WIDGET( child->data );
break;
} else if( GTK_IS_CONTAINER( child->data ) ) {
result = gtk_button_find_image( GTK_WIDGET(child->data ) );
break;
}
}
if( children ) g_list_free( children );
return result;
}
//________________________________________________________
GtkWidget* Gtk::gtk_button_find_label(GtkWidget* button)
{
// check widget type
if( !GTK_IS_CONTAINER(button) ) return 0L;
GtkWidget* result( 0L );
GList* children( gtk_container_get_children( GTK_CONTAINER( button ) ) );
for( GList *child = g_list_first( children ); child; child = g_list_next( child ) )
{
if( GTK_IS_LABEL( child->data) )
{
result = GTK_WIDGET( child->data );
break;
} else if( GTK_IS_CONTAINER( child->data ) ) {
result = gtk_button_find_image(GTK_WIDGET(child->data));
break;
}
}
if( children ) g_list_free( children );
return result;
}
//________________________________________________________
bool Gtk::gtk_combobox_has_frame( GtkWidget* widget )
{
GValue val = { 0, };
g_value_init(&val, G_TYPE_BOOLEAN);
g_object_get_property( G_OBJECT( widget ), "has-frame", &val );
return (bool) g_value_get_boolean( &val );
}
//________________________________________________________
bool Gtk::gtk_combobox_is_tree_view( GtkWidget* widget )
{
// check types and path
if( !widget && GTK_IS_TREE_VIEW( widget ) && GTK_IS_SCROLLED_WINDOW( gtk_widget_get_parent( widget ) ) ) return false;
return Gtk::gtk_widget_path( widget ) == "gtk-combobox-popup-window.GtkScrolledWindow.GtkTreeView";
}
//________________________________________________________
bool Gtk::gtk_combobox_is_scrolled_window( GtkWidget* widget )
{
// check types and path
if( !GTK_IS_SCROLLED_WINDOW(widget) ) return false;
return Gtk::gtk_widget_path( widget ) == "gtk-combobox-popup-window.GtkScrolledWindow";
}
//________________________________________________________
bool Gtk::gtk_combobox_is_viewport( GtkWidget* widget )
{
if( !GTK_IS_VIEWPORT(widget) ) return false;
static const std::string match( "gtk-combo-popup-window" );
return Gtk::gtk_widget_path( widget ).substr( 0, match.size() ) == match;
}
//________________________________________________________
bool Gtk::gtk_combobox_is_frame( GtkWidget* widget )
{
if( !GTK_IS_FRAME(widget) ) return false;
static const std::string match( "gtk-combo-popup-window" );
return Gtk::gtk_widget_path( widget ).substr( 0, match.size() ) == match;
}
//________________________________________________________
bool Gtk::gtk_combobox_appears_as_list( GtkWidget* widget )
{
gboolean appearsAsList;
gtk_widget_style_get( widget, "appears-as-list", &appearsAsList, NULL );
return (bool) appearsAsList;
}
//________________________________________________________
bool Gtk::gtk_notebook_tab_contains( GtkWidget* widget, int tab, int x, int y )
{
if( !( tab >= 0 && GTK_IS_NOTEBOOK( widget ) ) ) return false;
// cast to notebook and check against number of pages
GtkNotebook* notebook( GTK_NOTEBOOK( widget ) );
if( tab >= gtk_notebook_get_n_pages( notebook ) ) return false;
// retrieve page and tab label
GtkWidget* page( gtk_notebook_get_nth_page( notebook, tab ) );
GtkWidget* tabLabel( gtk_notebook_get_tab_label( notebook, page ) );
// get allocted size and compare to position
const GtkAllocation allocation( gtk_widget_get_allocation( tabLabel ) );
return Gtk::gdk_rectangle_contains( &allocation, x, y );
}
//________________________________________________________
int Gtk::gtk_notebook_find_tab( GtkWidget* widget, int x, int y )
{
if( !GTK_IS_NOTEBOOK( widget ) ) return -1;
// cast to notebook and check against number of pages
GtkNotebook* notebook( GTK_NOTEBOOK( widget ) );
int tab(-1);
int minDistance( -1 );
for( int i = gtk_notebook_find_first_tab( widget ); i < gtk_notebook_get_n_pages( notebook ); ++i )
{
// retrieve page and tab label
GtkWidget* page( gtk_notebook_get_nth_page( notebook, i ) );
if( !page ) continue;
// get label
GtkWidget* tabLabel( gtk_notebook_get_tab_label( notebook, page ) );
if(!tabLabel) continue;
// get allocted size and compare to position
const GtkAllocation allocation( gtk_widget_get_allocation( tabLabel ) );
// get manhattan length
const int distance = int(
std::abs( double( allocation.x + allocation.width/2 - x ) ) +
std::abs( double( allocation.y + allocation.height/2 - y ) ) );
if( minDistance < 0 || distance < minDistance )
{
tab = i;
minDistance = distance;
}
}
return tab;
}
//________________________________________________________
int Gtk::gtk_notebook_find_first_tab( GtkWidget* widget )
{
// TODO: reimplement with gtk+3.0
return 0;
// if( !GTK_IS_NOTEBOOK( widget ) ) return 0;
//
// // cast to notebook
// GtkNotebook* notebook( GTK_NOTEBOOK( widget ) );
// return g_list_position( notebook->children, notebook->first_tab );
}
//____________________________________________________________
bool Gtk::gtk_notebook_is_tab_label(GtkNotebook* notebook, GtkWidget* 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 ) );
if( !page ) continue;
GtkWidget* tabLabel( gtk_notebook_get_tab_label( notebook, page ) );
if( widget == tabLabel ) return true;
}
return false;
}
//____________________________________________________________
void Gtk::gtk_notebook_get_tabbar_rect( GtkNotebook* notebook, GdkRectangle* rect )
{
// check notebook and rect
if( !( notebook && rect ) ) return;
// check tab visibility
GList* children( gtk_container_get_children( GTK_CONTAINER( notebook ) ) );
if( !( gtk_notebook_get_show_tabs( notebook ) && children ) )
{
if( children ) g_list_free( children );
*rect = gdk_rectangle();
return;
}
// free children
if( children ) g_list_free( children );
// get full rect
gtk_widget_get_allocation( GTK_WIDGET( notebook ), rect );
// adjust to account for borderwidth
guint borderWidth( gtk_container_get_border_width( GTK_CONTAINER( notebook ) ) );
rect->x += borderWidth;
rect->y += borderWidth;
rect->height -= 2*borderWidth;
rect->width -= 2*borderWidth;
// get current page
int pageIndex( gtk_notebook_get_current_page( notebook ) );
if( !( pageIndex >= 0 && pageIndex < gtk_notebook_get_n_pages( notebook ) ) )
{
*rect = gdk_rectangle();
return;
}
GtkWidget* page( gtk_notebook_get_nth_page( notebook, pageIndex ) );
if( !page )
{
*rect = gdk_rectangle();
return;
}
// removes page allocated size from rect, based on tabwidget orientation
const GtkAllocation pageAllocation( gtk_widget_get_allocation( page ) );
switch( gtk_notebook_get_tab_pos( notebook ) )
{
case GTK_POS_BOTTOM:
rect->y += pageAllocation.height;
rect->height -= pageAllocation.height;
break;
case GTK_POS_TOP:
rect->height -= pageAllocation.height;
break;
case GTK_POS_RIGHT:
rect->x += pageAllocation.width;
rect->width -= pageAllocation.width;
break;
case GTK_POS_LEFT:
rect->width -= pageAllocation.width;
break;
}
return;
}
//____________________________________________________________
bool Gtk::gtk_notebook_has_visible_arrows( GtkNotebook* notebook )
{
if( !gtk_notebook_get_show_tabs( notebook ) ) return false;
// loop over pages
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 ) );
if( !page ) continue;
GtkWidget* label( gtk_notebook_get_tab_label( notebook, page ) );
if( label && !gtk_widget_get_mapped( label ) ) return true;
}
return false;
}
//____________________________________________________________
bool Gtk::gtk_notebook_update_close_buttons(GtkNotebook* notebook)
{
int numPages=gtk_notebook_get_n_pages( notebook );
for( int i = 0; i < numPages; ++i )
{
// retrieve page
GtkWidget* page( gtk_notebook_get_nth_page( notebook, i ) );
if( !page ) continue;
// retrieve tab label
GtkWidget* tabLabel( gtk_notebook_get_tab_label( notebook, page ) );
if( tabLabel && GTK_IS_CONTAINER( tabLabel ) )
{ gtk_container_adjust_buttons_state( GTK_CONTAINER( tabLabel ) ); }
}
return FALSE;
}
//________________________________________________________
bool Gtk::gtk_notebook_is_close_button(GtkWidget* widget)
{
if( GtkNotebook* nb=GTK_NOTEBOOK(gtk_parent_notebook(widget) ) )
{
// check if the button resides on tab label, not anywhere on the tab
bool tabLabelIsParent=false;
for( int i=0; i < gtk_notebook_get_n_pages(nb); ++i )
{
GtkWidget* tabLabel( gtk_notebook_get_tab_label(nb,gtk_notebook_get_nth_page( nb, i ) ) );
if( gtk_widget_is_parent( widget, GTK_WIDGET(tabLabel) ) )
{ tabLabelIsParent=true; }
}
if( !tabLabelIsParent ) return false;
// make sure button has no text and some image (for now, just hope it's a close icon)
if( gtk_button_find_image(widget) && !gtk_button_get_label( GTK_BUTTON(widget) ) )
{ return true; }
// check for pidgin 'x' close button
if( GtkWidget* label = gtk_button_find_label(widget) )
{
const gchar* labelText=gtk_label_get_text( GTK_LABEL(label) );
if(!strcmp(labelText,"×")) // It's not letter 'x' - it's a special symbol
{
gtk_widget_hide( label );
return true;
} else return false;
} else return false;
} else return false;
}
//________________________________________________________
bool Gtk::gtk_scrolled_window_force_sunken( GtkWidget* widget)
{
// FMIconView (from nautilus) always get sunken
if( g_object_is_a( G_OBJECT( widget ), "FMIconView" ) ) return true;
// other checks require widget to be of type GtkBin
if( !GTK_IS_BIN( widget ) ) return false;
// retrieve child
GtkWidget* child( gtk_bin_get_child( GTK_BIN( widget ) ) );
if( GTK_IS_TREE_VIEW( child ) || GTK_IS_ICON_VIEW( child ) ) return true;
else return false;
}
//________________________________________________________
bool Gtk::gdk_window_map_to_toplevel( GdkWindow* window, gint* x, gint* y, gint* w, gint* h, bool frame )
{
// always initialize arguments (to invalid values)
if( x ) *x=0;
if( y ) *y=0;
if( w ) *w = -1;
if( h ) *h = -1;
if( !( window && GDK_IS_WINDOW( window ) ) ) return false;
if( gdk_window_get_window_type( window ) == GDK_WINDOW_OFFSCREEN ) return false;
// get window size and height
if( frame ) gdk_toplevel_get_frame_size( window, w, h );
else gdk_toplevel_get_size( window, w, h );
Gtk::gdk_window_get_toplevel_origin( window, x, y );
return ((!w) || *w > 0) && ((!h) || *h>0);
}
//________________________________________________________
bool Gtk::gtk_widget_map_to_toplevel( GtkWidget* widget, gint* x, gint* y, gint* w, gint* h, bool frame )
{
// always initialize arguments (to invalid values)
if( x ) *x=0;
if( y ) *y=0;
if( w ) *w = -1;
if( h ) *h = -1;
if( !widget ) return false;
// get window
GdkWindow* window( gtk_widget_get_parent_window( widget ) );
if( !( window && GDK_IS_WINDOW( window ) ) ) return false;
if( gdk_window_get_window_type( window ) == GDK_WINDOW_OFFSCREEN ) return false;
if( frame ) gdk_toplevel_get_frame_size( window, w, h );
else gdk_toplevel_get_size( window, w, h );
int xlocal, ylocal;
const bool success( gtk_widget_translate_coordinates( widget, gtk_widget_get_toplevel( widget ), 0, 0, &xlocal, &ylocal ) );
if( success )
{
if( x ) *x=xlocal;
if( y ) *y=ylocal;
}
return success && ((!w) || *w > 0) && ((!h) || *h>0);
}
//________________________________________________________
bool Gtk::gtk_widget_map_to_parent( GtkWidget* widget, GtkWidget* parent, gint* x, gint* y, gint* w, gint* h )
{
// always initialize arguments (to invalid values)
if( x ) *x=0;
if( y ) *y=0;
if( w ) *w = -1;
if( h ) *h = -1;
if( !( widget && parent ) ) return false;
const GtkAllocation allocation( gtk_widget_get_allocation( parent ) );
if( w ) *w = allocation.width;
if( h ) *h = allocation.height;
int xlocal, ylocal;
const bool success( gtk_widget_translate_coordinates( widget, parent, 0, 0, &xlocal, &ylocal ) );
if( success )
{
if( x ) *x=xlocal;
if( y ) *y=ylocal;
}
return success && ((!w) || *w > 0) && ((!h) || *h>0);
}
//________________________________________________________
bool Gtk::gdk_window_translate_origin( GdkWindow* parent, GdkWindow* child, gint* x, gint* y )
{
if( x ) *x = 0;
if( y ) *y = 0;
if( !( parent && child ) ) return false;
while( child && GDK_IS_WINDOW( child ) &&
child != parent &&
gdk_window_get_window_type( child ) == GDK_WINDOW_CHILD )
{
gint xloc;
gint yloc;
gdk_window_get_position( child, &xloc, &yloc );
if( x ) *x += xloc;
if( y ) *y += yloc;
child = gdk_window_get_parent( child );
}
return( child == parent );
}
//________________________________________________________
void Gtk::gdk_toplevel_get_size( GdkWindow* window, gint* w, gint* h )
{
if( !( window && GDK_IS_WINDOW( window ) ) )
{
if( w ) *w = -1;
if( h ) *h = -1;
return;
}
if( GdkWindow* topLevel = gdk_window_get_toplevel( window ) )
{
if( w ) *w = gdk_window_get_width( topLevel );
if( h ) *h = gdk_window_get_height( topLevel );
} else {
if( w ) *w = gdk_window_get_width( window );
if( h ) *h = gdk_window_get_height( window );
}
return;
}
//________________________________________________________
void Gtk::gdk_toplevel_get_frame_size( GdkWindow* window, gint* w, gint* h )
{
if( !( window && GDK_IS_WINDOW( window ) ) )
{
if( w ) *w = -1;
if( h ) *h = -1;
return;
}
GdkWindow* topLevel = gdk_window_get_toplevel( window );
if( topLevel && GDK_IS_WINDOW( topLevel ) )
{
if( gdk_window_get_window_type( topLevel ) == GDK_WINDOW_OFFSCREEN )
{
if( w ) *w = gdk_window_get_width(topLevel);
if( h ) *h = gdk_window_get_height(topLevel);
} else {
GdkRectangle rect = {0, 0, -1, -1};
gdk_window_get_frame_extents( topLevel, &rect );
if( w ) *w = rect.width;
if( h ) *h = rect.height;
}
}
return;
}
//________________________________________________________
void Gtk::gdk_window_get_toplevel_origin( GdkWindow* window, gint* x, gint* y )
{
if( x ) *x = 0;
if( y ) *y = 0;
if( !window ) return;
while( window && GDK_IS_WINDOW( window ) && gdk_window_get_window_type( window ) == GDK_WINDOW_CHILD )
{
gint xloc;
gint yloc;
gdk_window_get_position( window, &xloc, &yloc );
if( x ) *x += xloc;
if( y ) *y += yloc;
window = gdk_window_get_parent( window );
}
return;
}
//___________________________________________________________
GdkPixbuf* Gtk::gdk_pixbuf_set_alpha( const GdkPixbuf *pixbuf, double alpha )
{
g_return_val_if_fail( pixbuf != 0L, 0L);
g_return_val_if_fail( GDK_IS_PIXBUF( pixbuf ), 0L );
/* Returns a copy of pixbuf with it's non-completely-transparent pixels to
have an alpha level "alpha" of their original value. */
GdkPixbuf* target( gdk_pixbuf_add_alpha( pixbuf, false, 0, 0, 0 ) );
if( alpha >= 1.0 ) return target;
if( alpha < 0 ) alpha = 0;
const int width( gdk_pixbuf_get_width( target ) );
const int height( gdk_pixbuf_get_height( target ) );
const int rowstride( gdk_pixbuf_get_rowstride( target ) );
unsigned char* data = gdk_pixbuf_get_pixels( target );
for( int y = 0; y < height; ++y )
{
for( int x = 0; x < width; ++x )
{
/* The "4" is the number of chars per pixel, in this case, RGBA,
the 3 means "skip to the alpha" */
unsigned char* current = data + ( y*rowstride ) + ( x*4 ) + 3;
*(current) = (unsigned char) ( *( current )*alpha );
}
}
return target;
}
//_________________________________________________________
bool Gtk::gdk_pixbuf_to_gamma(GdkPixbuf* pixbuf, double value)
{
if(gdk_pixbuf_get_colorspace(pixbuf)==GDK_COLORSPACE_RGB &&
gdk_pixbuf_get_bits_per_sample(pixbuf)==8 &&
gdk_pixbuf_get_has_alpha(pixbuf) &&
gdk_pixbuf_get_n_channels(pixbuf)==4)
{
double gamma=1./(2.*value+0.5);
unsigned char* data=gdk_pixbuf_get_pixels(pixbuf);
const int height=gdk_pixbuf_get_height(pixbuf);
const int width=gdk_pixbuf_get_width(pixbuf);
const int rowstride=gdk_pixbuf_get_rowstride(pixbuf);
for(int x=0;x<width;++x)
{
for(int y=0; y<height; y++)
{
unsigned char* p=data + y*rowstride + x*4;
*p=(char)(pow((*p/255.),gamma)*255); ++p;
*p=(char)(pow((*p/255.),gamma)*255); ++p;
*p=(char)(pow((*p/255.),gamma)*255);
}
}
return true;
} else return false;
}
//___________________________________________________________
GdkPixbuf* Gtk::gdk_pixbuf_resize( GdkPixbuf* src, int width, int height )
{
if( width == gdk_pixbuf_get_width( src ) && height == gdk_pixbuf_get_height( src ) )
{
return static_cast<GdkPixbuf*>(g_object_ref (src));
} else {
return gdk_pixbuf_scale_simple( src, width, height, GDK_INTERP_BILINEAR );
}
}
//___________________________________________________________
void Gtk::gtk_viewport_get_position( GtkViewport* viewport, gint* x, gint* y )
{
// initialize
if( x ) *x = 0;
if( y ) *y = 0;
// get windows and derive offsets
gint xBin(0), yBin(0);
gdk_window_get_geometry( gtk_viewport_get_bin_window( viewport ), &xBin, &yBin, 0, 0 );
gint xView(0), yView(0);
gdk_window_get_geometry( gtk_viewport_get_view_window( viewport ), &xView, &yView, 0, 0 );
// calculate offsets
if( x ) *x = xView - xBin;
if( y ) *y = yView - yBin;
// also correct from widget thickness
GtkStyle* style( gtk_widget_get_style( GTK_WIDGET( viewport ) ) );
if( style )
{
if( x ) *x -= style->xthickness;
if( y ) *y -= style->ythickness;
}
return;
}
//___________________________________________________________
GtkWidget* Gtk::gtk_dialog_find_button(GtkDialog* dialog,gint response_id)
{
// get children of dialog's action area
GList* children( gtk_container_get_children( GTK_CONTAINER( gtk_dialog_get_action_area( dialog ) ) ) );
#if OXYGEN_DEBUG
std::cerr << "Oxygen::Gtk::gtk_dialog_find_button - buttons: ";
#endif
for( GList *child = g_list_first( children ); child; child = g_list_next( child ) )
{
// check data
if( !GTK_IS_WIDGET( child->data ) ) continue;
GtkWidget* childWidget( GTK_WIDGET( child->data ) );
const gint id( gtk_dialog_get_response_for_widget(dialog, childWidget ) );
#if OXYGEN_DEBUG
std::cerr << Gtk::TypeNames::response( (GtkResponseType) id ) << ", ";
#endif
if( id == response_id ) return childWidget;
}
#if OXYGEN_DEBUG
std::cerr << std::endl;
#endif
if( children ) g_list_free( children );
return 0L;
}