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[wxWidgets.git] / src / gtk / control.cpp
diff --git a/src/gtk/control.cpp b/src/gtk/control.cpp
index 510d88d0e936c9e3b4b7c3eca200ca6289cbc4a9..613ed139fa1c74732b1d4eac2d6cf122cf6dcc15 100644 (file)
--- a/src/gtk/control.cpp
+++ b/src/gtk/control.cpp
@@ -1,51 +1,369 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////
-// Name:        control.cpp
-// Purpose:
+// Name:        src/gtk/control.cpp
+// Purpose:     wxControl implementation for wxGTK
 // Author:      Robert Roebling
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Vadim Zeitlin
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "control.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_CONTROLS
 
 #include "wx/control.h"
 
 
 #include "wx/control.h"
 
-//-----------------------------------------------------------------------------
-// wxControl
-//-----------------------------------------------------------------------------
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+    #include "wx/settings.h"
+#endif
+
+#include "wx/fontutil.h"
+#include "wx/gtk/private.h"
+
+// ============================================================================
+// wxControl implementation
+// ============================================================================
 
 
-IMPLEMENT_DYNAMIC_CLASS(wxControl,wxWindow)
+// ----------------------------------------------------------------------------
+// wxControl creation
+// ----------------------------------------------------------------------------
 
 
-wxControl::wxControl(void)
+IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
+
+wxControl::wxControl()
 {
 {
-  m_label = "";
-  m_needParent = TRUE;
-};
+    m_needParent = true;
+}
 
 
-wxControl::wxControl( wxWindow *parent, wxWindowID id, 
-      const wxPoint &pos, const wxSize &size, 
-      const long style, const wxString &name ) :
-  wxWindow( parent, id, pos, size, style, name )
+bool wxControl::Create( wxWindow *parent,
+                      wxWindowID id,
+                      const wxPoint &pos,
+                      const wxSize &size,
+                      long style,
+                      const wxValidator& validator,
+                      const wxString &name )
 {
 {
-};
+    bool ret = wxWindow::Create(parent, id, pos, size, style, name);
+
+#if wxUSE_VALIDATORS
+    SetValidator(validator);
+#endif
+
+    return ret;
+}
 
 
-void wxControl::Command( wxCommandEvent &WXUNUSED(event) )
+wxSize wxControl::DoGetBestSize() const
 {
 {
-};
+    // Do not return any arbitrary default value...
+    wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
+
+    GtkRequisition req;
+    req.width = 2;
+    req.height = 2;
+    (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
+        (m_widget, &req );
+
+    wxSize best(req.width, req.height);
+    CacheBestSize(best);
+    return best;
+}
+
+void wxControl::PostCreation(const wxSize& size)
+{
+    wxWindow::PostCreation();
+
+    // NB: GetBestSize needs to know the style, otherwise it will assume
+    //     default font and if the user uses a different font, determined
+    //     best size will be different (typically, smaller) than the desired
+    //     size. This call ensure that a style is available at the time
+    //     GetBestSize is called.
+    gtk_widget_ensure_style(m_widget);
+
+    ApplyWidgetStyle();
+    SetInitialBestSize(size);
+}
+
+// ----------------------------------------------------------------------------
+// wxControl dealing with labels
+// ----------------------------------------------------------------------------
 
 void wxControl::SetLabel( const wxString &label )
 {
 
 void wxControl::SetLabel( const wxString &label )
 {
-  m_label = label;
-};
+    // keep the original string internally to be able to return it later (for
+    // consistency with the other ports)
+    m_label = label;
+
+    InvalidateBestSize();
+}
+
+wxString wxControl::GetLabel() const
+{
+    return m_label;
+}
+
+void wxControl::GTKSetLabelForLabel(GtkLabel *w, const wxString& label)
+{
+    // don't call the virtual function which might call this one back again
+    wxControl::SetLabel(label);
+
+    const wxString labelGTK = GTKConvertMnemonics(label);
+
+    gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK));
+}
+
+// ----------------------------------------------------------------------------
+// GtkFrame helpers
+//
+// GtkFrames do in fact support mnemonics in GTK2+ but not through
+// gtk_frame_set_label, rather you need to use a custom label widget
+// instead (idea gleaned from the native gtk font dialog code in GTK)
+// ----------------------------------------------------------------------------
+
+GtkWidget* wxControl::GTKCreateFrame(const wxString& label)
+{
+    const wxString labelGTK = GTKConvertMnemonics(label);
+    GtkWidget* labelwidget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK));
+    gtk_widget_show(labelwidget); // without this it won't show...
+
+    GtkWidget* framewidget = gtk_frame_new(NULL);
+    gtk_frame_set_label_widget(GTK_FRAME(framewidget), labelwidget);
+
+    return framewidget; //note that the label is already set so you'll
+                        //only need to call wxControl::SetLabel afterwards
+}
+
+void wxControl::GTKSetLabelForFrame(GtkFrame *w, const wxString& label)
+{
+    GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
+    GTKSetLabelForLabel(labelwidget, label);
+}
+
+void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style)
+{
+    gtk_widget_modify_style(GTK_WIDGET(w), style);
+    gtk_widget_modify_style(gtk_frame_get_label_widget (w), style);
+}
 
 
-wxString wxControl::GetLabel(void) const
+void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget)
 {
 {
-  return m_label;
+    GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
+
+    gtk_label_set_mnemonic_widget(labelwidget, widget);
+}
+
+// ----------------------------------------------------------------------------
+// worker function implementing both GTKConvert/RemoveMnemonics()
+//
+// notice that under GTK+ 1 we only really need to support MNEMONICS_REMOVE as
+// it doesn't support mnemonics anyhow but this would make the code so ugly
+// that we do the same thing for GKT+ 1 and 2
+// ----------------------------------------------------------------------------
+
+enum MnemonicsFlag
+{
+    MNEMONICS_REMOVE,
+    MNEMONICS_CONVERT
 };
 
 };
 
+static wxString GTKProcessMnemonics(const wxString& label, MnemonicsFlag flag)
+{
+    const size_t len = label.length();
+    wxString labelGTK;
+    labelGTK.reserve(len);
+    for ( size_t i = 0; i < len; i++ )
+    {
+        wxChar ch = label[i];
+
+        switch ( ch )
+        {
+            case wxT('&'):
+                if ( i == len - 1 )
+                {
+                    // "&" at the end of string is an error
+                    wxLogDebug(wxT("Invalid label \"%s\"."), label.c_str());
+                    break;
+                }
+
+                ch = label[++i]; // skip '&' itself
+                switch ( ch )
+                {
+                    case wxT('&'):
+                        // special case: "&&" is not a mnemonic at all but just
+                        // an escaped "&"
+                        labelGTK += wxT('&');
+                        break;
+
+                    case wxT('_'):
+                        if ( flag == MNEMONICS_CONVERT )
+                        {
+                            // '_' can't be a GTK mnemonic apparently so
+                            // replace it with something similar
+                            labelGTK += wxT("_-");
+                            break;
+                        }
+                        //else: fall through
+
+                    default:
+                        if ( flag == MNEMONICS_CONVERT )
+                            labelGTK += wxT('_');
+                        labelGTK += ch;
+                }
+                break;
+
+            case wxT('_'):
+                if ( flag == MNEMONICS_CONVERT )
+                {
+                    // escape any existing underlines in the string so that
+                    // they don't become mnemonics accidentally
+                    labelGTK += wxT("__");
+                    break;
+                }
+                //else: fall through
+
+            default:
+                labelGTK += ch;
+        }
+    }
+
+    return labelGTK;
+}
+
+/* static */
+wxString wxControl::GTKRemoveMnemonics(const wxString& label)
+{
+    return GTKProcessMnemonics(label, MNEMONICS_REMOVE);
+}
+
+/* static */
+wxString wxControl::GTKConvertMnemonics(const wxString& label)
+{
+    return GTKProcessMnemonics(label, MNEMONICS_CONVERT);
+}
+
+// ----------------------------------------------------------------------------
+// wxControl styles (a.k.a. attributes)
+// ----------------------------------------------------------------------------
+
+wxVisualAttributes wxControl::GetDefaultAttributes() const
+{
+    return GetDefaultAttributesFromGTKWidget(m_widget,
+                                             UseGTKStyleBase());
+}
+
+
+#define SHIFT (8*(sizeof(short int)-sizeof(char)))
+
+// static
+wxVisualAttributes
+wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
+                                             bool useBase,
+                                             int state)
+{
+    GtkStyle* style;
+    wxVisualAttributes attr;
+
+    style = gtk_rc_get_style(widget);
+    if (!style)
+        style = gtk_widget_get_default_style();
+
+    if (!style)
+    {
+        return wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL);
+    }
+
+    if (state == -1)
+        state = GTK_STATE_NORMAL;
+
+    // get the style's colours
+    attr.colFg = wxColour(style->fg[state].red   >> SHIFT,
+                          style->fg[state].green >> SHIFT,
+                          style->fg[state].blue  >> SHIFT);
+    if (useBase)
+        attr.colBg = wxColour(style->base[state].red   >> SHIFT,
+                              style->base[state].green >> SHIFT,
+                              style->base[state].blue  >> SHIFT);
+    else
+        attr.colBg = wxColour(style->bg[state].red   >> SHIFT,
+                              style->bg[state].green >> SHIFT,
+                              style->bg[state].blue  >> SHIFT);
 
 
+    // get the style's font
+    if ( !style->font_desc )
+        style = gtk_widget_get_default_style();
+    if ( style && style->font_desc )
+    {
+        wxNativeFontInfo info;
+        info.description = pango_font_description_copy(style->font_desc);
+        attr.font = wxFont(info);
+    }
+    else
+    {
+        GtkSettings *settings = gtk_settings_get_default();
+        gchar *font_name = NULL;
+        g_object_get ( settings,
+                       "gtk-font-name",
+                       &font_name,
+                       NULL);
+        if (!font_name)
+            attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
+        else
+            attr.font = wxFont(wxString::FromAscii(font_name));
+        g_free (font_name);
+    }
+
+    return attr;
+}
+
+
+//static
+wxVisualAttributes
+wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNew_t widget_new,
+                                             bool useBase,
+                                             int state)
+{
+    wxVisualAttributes attr;
+    // NB: we need toplevel window so that GTK+ can find the right style
+    GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    GtkWidget* widget = widget_new();
+    gtk_container_add(GTK_CONTAINER(wnd), widget);
+    attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
+    gtk_widget_destroy(wnd);
+    return attr;
+}
+
+//static
+wxVisualAttributes
+wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromStr_t widget_new,
+                                             bool useBase,
+                                             int state)
+{
+    wxVisualAttributes attr;
+    // NB: we need toplevel window so that GTK+ can find the right style
+    GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    GtkWidget* widget = widget_new("");
+    gtk_container_add(GTK_CONTAINER(wnd), widget);
+    attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
+    gtk_widget_destroy(wnd);
+    return attr;
+}
+
+
+//static
+wxVisualAttributes
+wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromAdj_t widget_new,
+                                             bool useBase,
+                                             int state)
+{
+    wxVisualAttributes attr;
+    // NB: we need toplevel window so that GTK+ can find the right style
+    GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    GtkWidget* widget = widget_new(NULL);
+    gtk_container_add(GTK_CONTAINER(wnd), widget);
+    attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
+    gtk_widget_destroy(wnd);
+    return attr;
+}
 
 
+#endif // wxUSE_CONTROLS
wxWidgets (Impactor)