src/gtk/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/control.cpp
   3 // Purpose:     wxControl implementation for wxGTK
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_CONTROLS
  14
  15 #include "wx/control.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/log.h"
  19     #include "wx/settings.h"
  20 #endif
  21
  22 #include "wx/fontutil.h"
  23 #include "wx/gtk/private.h"
  24 #include "wx/utils.h"
  25 #include "wx/sysopt.h"
  26
  27 #include "wx/gtk/private/mnemonics.h"
  28
  29 // ============================================================================
  30 // wxControl implementation
  31 // ============================================================================
  32
  33 // ----------------------------------------------------------------------------
  34 // wxControl creation
  35 // ----------------------------------------------------------------------------
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  38
  39 wxControl::wxControl()
  40 {
  41 }
  42
  43 bool wxControl::Create( wxWindow *parent,
  44                       wxWindowID id,
  45                       const wxPoint &pos,
  46                       const wxSize &size,
  47                       long style,
  48                       const wxValidator& validator,
  49                       const wxString &name )
  50 {
  51     bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  52
  53 #if wxUSE_VALIDATORS
  54     SetValidator(validator);
  55 #endif
  56
  57     return ret;
  58 }
  59
  60 wxSize wxControl::DoGetBestSize() const
  61 {
  62     // Do not return any arbitrary default value...
  63     wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
  64
  65     wxSize best;
  66     if (m_wxwindow)
  67     {
  68         // this is not a native control, size_request is likely to be (0,0)
  69         best = wxControlBase::DoGetBestSize();
  70     }
  71     else
  72     {
  73         GtkRequisition req;
  74         GTK_WIDGET_GET_CLASS(m_widget)->size_request(m_widget, &req);
  75         best.Set(req.width, req.height);
  76     }
  77     CacheBestSize(best);
  78     return best;
  79 }
  80
  81 void wxControl::PostCreation(const wxSize& size)
  82 {
  83     wxWindow::PostCreation();
  84
  85     // NB: GetBestSize needs to know the style, otherwise it will assume
  86     //     default font and if the user uses a different font, determined
  87     //     best size will be different (typically, smaller) than the desired
  88     //     size. This call ensure that a style is available at the time
  89     //     GetBestSize is called.
  90     gtk_widget_ensure_style(m_widget);
  91
  92     GTKApplyWidgetStyle();
  93     SetInitialSize(size);
  94 }
  95
  96 // ----------------------------------------------------------------------------
  97 // Work around a GTK+ bug whereby button is insensitive after being
  98 // enabled
  99 // ----------------------------------------------------------------------------
 100
 101 // Fix sensitivity due to bug in GTK+ < 2.14
 102 void wxControl::GTKFixSensitivity(bool onlyIfUnderMouse)
 103 {
 104     if (gtk_check_version(2,14,0)
 105 #if wxUSE_SYSTEM_OPTIONS
 106         && (wxSystemOptions::GetOptionInt(wxT("gtk.control.disable-sensitivity-fix")) != 1)
 107 #endif
 108         )
 109     {
 110         wxPoint pt = wxGetMousePosition();
 111         wxRect rect(ClientToScreen(wxPoint(0, 0)), GetSize());
 112         if (!onlyIfUnderMouse || rect.Contains(pt))
 113         {
 114             Hide();
 115             Show();
 116         }
 117     }
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // wxControl dealing with labels
 122 // ----------------------------------------------------------------------------
 123
 124 void wxControl::GTKSetLabelForLabel(GtkLabel *w, const wxString& label)
 125 {
 126     const wxString labelGTK = GTKConvertMnemonics(label);
 127     gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK));
 128 }
 129
 130 #if wxUSE_MARKUP
 131
 132 void wxControl::GTKSetLabelWithMarkupForLabel(GtkLabel *w, const wxString& label)
 133 {
 134     const wxString labelGTK = GTKConvertMnemonicsWithMarkup(label);
 135     gtk_label_set_markup_with_mnemonic(w, wxGTK_CONV(labelGTK));
 136 }
 137
 138 #endif // wxUSE_MARKUP
 139
 140 // ----------------------------------------------------------------------------
 141 // GtkFrame helpers
 142 //
 143 // GtkFrames do in fact support mnemonics in GTK2+ but not through
 144 // gtk_frame_set_label, rather you need to use a custom label widget
 145 // instead (idea gleaned from the native gtk font dialog code in GTK)
 146 // ----------------------------------------------------------------------------
 147
 148 GtkWidget* wxControl::GTKCreateFrame(const wxString& label)
 149 {
 150     const wxString labelGTK = GTKConvertMnemonics(label);
 151     GtkWidget* labelwidget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK));
 152     gtk_widget_show(labelwidget); // without this it won't show...
 153
 154     GtkWidget* framewidget = gtk_frame_new(NULL);
 155     gtk_frame_set_label_widget(GTK_FRAME(framewidget), labelwidget);
 156
 157     return framewidget; // note that the label is already set so you'll
 158                         // only need to call wxControl::SetLabel afterwards
 159 }
 160
 161 void wxControl::GTKSetLabelForFrame(GtkFrame *w, const wxString& label)
 162 {
 163     wxControlBase::SetLabel(label);
 164
 165     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 166     GTKSetLabelForLabel(labelwidget, label);
 167 }
 168
 169 void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style)
 170 {
 171     gtk_widget_modify_style(GTK_WIDGET(w), style);
 172     gtk_widget_modify_style(gtk_frame_get_label_widget (w), style);
 173 }
 174
 175 void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget)
 176 {
 177     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 178
 179     gtk_label_set_mnemonic_widget(labelwidget, widget);
 180 }
 181
 182 // ----------------------------------------------------------------------------
 183 // worker function implementing GTK*Mnemonics() functions
 184 // ----------------------------------------------------------------------------
 185
 186 /* static */
 187 wxString wxControl::GTKRemoveMnemonics(const wxString& label)
 188 {
 189     return wxGTKRemoveMnemonics(label);
 190 }
 191
 192 /* static */
 193 wxString wxControl::GTKConvertMnemonics(const wxString& label)
 194 {
 195     return wxConvertMnemonicsToGTK(label);
 196 }
 197
 198 /* static */
 199 wxString wxControl::GTKConvertMnemonicsWithMarkup(const wxString& label)
 200 {
 201     return wxConvertMnemonicsToGTKMarkup(label);
 202 }
 203
 204 // ----------------------------------------------------------------------------
 205 // wxControl styles (a.k.a. attributes)
 206 // ----------------------------------------------------------------------------
 207
 208 wxVisualAttributes wxControl::GetDefaultAttributes() const
 209 {
 210     return GetDefaultAttributesFromGTKWidget(m_widget,
 211                                              UseGTKStyleBase());
 212 }
 213
 214 // static
 215 wxVisualAttributes
 216 wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
 217                                              bool useBase,
 218                                              int state)
 219 {
 220     GtkStyle* style;
 221     wxVisualAttributes attr;
 222
 223     style = gtk_rc_get_style(widget);
 224     if (!style)
 225         style = gtk_widget_get_default_style();
 226
 227     if (!style)
 228     {
 229         return wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL);
 230     }
 231
 232     if (state == -1)
 233         state = GTK_STATE_NORMAL;
 234
 235     // get the style's colours
 236     attr.colFg = wxColour(style->fg[state]);
 237     if (useBase)
 238         attr.colBg = wxColour(style->base[state]);
 239     else
 240         attr.colBg = wxColour(style->bg[state]);
 241
 242     // get the style's font
 243     if ( !style->font_desc )
 244         style = gtk_widget_get_default_style();
 245     if ( style && style->font_desc )
 246     {
 247         wxNativeFontInfo info;
 248         info.description = pango_font_description_copy(style->font_desc);
 249         attr.font = wxFont(info);
 250     }
 251     else
 252     {
 253         GtkSettings *settings = gtk_settings_get_default();
 254         gchar *font_name = NULL;
 255         g_object_get ( settings,
 256                        "gtk-font-name",
 257                        &font_name,
 258                        NULL);
 259         if (!font_name)
 260             attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 261         else
 262             attr.font = wxFont(wxString::FromAscii(font_name));
 263         g_free (font_name);
 264     }
 265
 266     return attr;
 267 }
 268
 269
 270 //static
 271 wxVisualAttributes
 272 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNew_t widget_new,
 273                                              bool useBase,
 274                                              int state)
 275 {
 276     wxVisualAttributes attr;
 277     // NB: we need toplevel window so that GTK+ can find the right style
 278     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 279     GtkWidget* widget = widget_new();
 280     gtk_container_add(GTK_CONTAINER(wnd), widget);
 281     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 282     gtk_widget_destroy(wnd);
 283     return attr;
 284 }
 285
 286 //static
 287 wxVisualAttributes
 288 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromStr_t widget_new,
 289                                              bool useBase,
 290                                              int state)
 291 {
 292     wxVisualAttributes attr;
 293     // NB: we need toplevel window so that GTK+ can find the right style
 294     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 295     GtkWidget* widget = widget_new("");
 296     gtk_container_add(GTK_CONTAINER(wnd), widget);
 297     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 298     gtk_widget_destroy(wnd);
 299     return attr;
 300 }
 301
 302
 303 //static
 304 wxVisualAttributes
 305 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromAdj_t widget_new,
 306                                              bool useBase,
 307                                              int state)
 308 {
 309     wxVisualAttributes attr;
 310     // NB: we need toplevel window so that GTK+ can find the right style
 311     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 312     GtkWidget* widget = widget_new(NULL);
 313     gtk_container_add(GTK_CONTAINER(wnd), widget);
 314     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 315     gtk_widget_destroy(wnd);
 316     return attr;
 317 }
 318
 319 #endif // wxUSE_CONTROLS