wxWidgets/include/wx/gtk/private.h

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/gtk/private.h
// Purpose:     wxGTK private macros, functions &c
// Author:      Vadim Zeitlin
// Modified by:
// Created:     12.03.02
// RCS-ID:      $Id$
// Copyright:   (c) 2002 Vadim Zeitlin <vadim@wxwindows.org>
// Licence:     wxWindows license
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_GTK_PRIVATE_H_
#define _WX_GTK_PRIVATE_H_

#include <gdk/gdk.h>
#include <gtk/gtk.h>

#include "wx/event.h"

// fail all version tests if the GTK+ version is so ancient that it doesn't
// even have GTK_CHECK_VERSION
#ifndef GTK_CHECK_VERSION
    #define GTK_CHECK_VERSION(a, b, c) 0
#endif

// GTK+ 2.0 compatibility define is broken when used from C++ as it casts enum
// to int implicitly
#ifdef __WXGTK20__
    #undef gtk_signal_disconnect_by_func
    #define gtk_signal_disconnect_by_func(object,func,data) \
        gtk_signal_compat_matched((object), (func), (data), \
                                  (GSignalMatchType)(G_SIGNAL_MATCH_FUNC | \
                                                     G_SIGNAL_MATCH_DATA), 0)
#endif

// child is not a member of GTK_BUTTON() any more in GTK+ 2.0
#ifdef __WXGTK20__
    #define BUTTON_CHILD(w) GTK_BIN((w))->child
#else
    #define BUTTON_CHILD(w) GTK_BUTTON((w))->child
#endif

// event_window has disappeared from GtkToggleButton in GTK+ 2.0
#ifdef __WXGTK20__
    #define TOGGLE_BUTTON_EVENT_WIN(w) GTK_BUTTON((w))->event_window
#else
    #define TOGGLE_BUTTON_EVENT_WIN(w) GTK_TOGGLE_BUTTON((w))->event_window
#endif

// get the font from a style
//
// TODO: GdkFont has been replaced by PangoFontDescription in GTK+ 2.0
//       and we really should use it instead of GdkFont (see also dclient.cpp)
#ifdef __WXGTK20__
    #define GET_STYLE_FONT(style) gtk_style_get_font(style)
    #define SET_STYLE_FONT(style, font) gtk_style_set_font(style, font)
#else
    #define GET_STYLE_FONT(style) ((style)->font)
    #define SET_STYLE_FONT(style, fnt) \
        gdk_font_unref( style->font );  \
        style->font = gdk_font_ref( fnt )
#endif

// gtk_editable_{copy|cut|paste}_clipboard() had an extra argument under
// previous GTK+ versions but no more
#if defined(__WXGTK20__) || (GTK_MINOR_VERSION > 0)
    #define DUMMY_CLIPBOARD_ARG
#else
    #define DUMMY_CLIPBOARD_ARG  ,0
#endif

// _GtkEditable is now private
#ifdef __WXGTK20__
    #define GET_EDITABLE_POS(w) gtk_editable_get_position(GTK_EDITABLE(w))
    #define SET_EDITABLE_POS(w, pos) \
        gtk_editable_set_position(GTK_EDITABLE(w), (pos))
#else
    #define GET_EDITABLE_POS(w) GTK_EDITABLE((w))->current_pos
    #define SET_EDITABLE_POS(w, pos) \
        GTK_EDITABLE((w))->current_pos = (pos)
#endif

// this GtkNotebook struct field has been renamed
#ifdef __WXGTK20__
    #define NOTEBOOK_PANEL(nb)  GTK_NOTEBOOK(nb)->event_window
#else
    #define NOTEBOOK_PANEL(nb)  GTK_NOTEBOOK(nb)->panel
#endif

#ifdef __WXGTK20__
    #define SCROLLBAR_CBACK_ARG
    #define GET_SCROLL_TYPE(w)   GTK_SCROLL_JUMP
#else
    #define SCROLLBAR_CBACK_ARG
    #define GET_SCROLL_TYPE(w)   GTK_RANGE((w))->scroll_type
#endif

// translate a GTK+ scroll type to a wxEventType
inline wxEventType GtkScrollTypeToWx(guint scrollType)
{
    wxEventType command;
    switch ( scrollType )
    {
        case GTK_SCROLL_STEP_BACKWARD:
            command = wxEVT_SCROLL_LINEUP;
            break;

        case GTK_SCROLL_STEP_FORWARD:
            command = wxEVT_SCROLL_LINEDOWN;
            break;

        case GTK_SCROLL_PAGE_BACKWARD:
            command = wxEVT_SCROLL_PAGEUP;
            break;

        case GTK_SCROLL_PAGE_FORWARD:
            command = wxEVT_SCROLL_PAGEDOWN;
            break;

        default:
            command = wxEVT_SCROLL_THUMBTRACK;
    }

    return command;
}

inline wxEventType GtkScrollWinTypeToWx(guint scrollType)
{
    // GtkScrollTypeToWx() returns SCROLL_XXX, not SCROLLWIN_XXX as we need
    return GtkScrollTypeToWx(scrollType) +
            wxEVT_SCROLLWIN_TOP - wxEVT_SCROLL_TOP;
}

#endif // _WX_GTK_PRIVATE_H_