src/gtk/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/control.cpp
   3 // Purpose:     wxControl implementation for wxGTK
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Vadim Zeitlin
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #if wxUSE_CONTROLS
  13
  14 #include "wx/control.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/settings.h"
  19 #endif
  20
  21 #include "wx/fontutil.h"
  22 #include "wx/utils.h"
  23 #include "wx/sysopt.h"
  24
  25 #include <gtk/gtk.h>
  26 #include "wx/gtk/private.h"
  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 #ifdef __WXGTK3__
  61 bool wxControl::SetFont(const wxFont& font)
  62 {
  63     const bool changed = base_type::SetFont(font);
  64     if (changed && !gtk_widget_get_realized(m_widget))
  65     {
  66         // GTK defers sending "style-updated" until widget is realized, but
  67         // GetBestSize() won't compute correct result until the signal is sent,
  68         // so we have to do it now
  69         g_signal_emit_by_name(m_widget, "style-updated");
  70     }
  71     return changed;
  72 }
  73 #endif
  74
  75 wxSize wxControl::DoGetBestSize() const
  76 {
  77     // Do not return any arbitrary default value...
  78     wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
  79
  80     wxSize best;
  81     if (m_wxwindow)
  82     {
  83         // this is not a native control, size_request is likely to be (0,0)
  84         best = wxControlBase::DoGetBestSize();
  85     }
  86     else
  87     {
  88         best = GTKGetPreferredSize(m_widget);
  89     }
  90
  91     return best;
  92 }
  93
  94 void wxControl::PostCreation(const wxSize& size)
  95 {
  96     wxWindow::PostCreation();
  97
  98 #ifndef __WXGTK3__
  99     // NB: GetBestSize needs to know the style, otherwise it will assume
 100     //     default font and if the user uses a different font, determined
 101     //     best size will be different (typically, smaller) than the desired
 102     //     size. This call ensure that a style is available at the time
 103     //     GetBestSize is called.
 104     gtk_widget_ensure_style(m_widget);
 105 #endif
 106
 107     SetInitialSize(size);
 108 }
 109
 110 // ----------------------------------------------------------------------------
 111 // Work around a GTK+ bug whereby button is insensitive after being
 112 // enabled
 113 // ----------------------------------------------------------------------------
 114
 115 // Fix sensitivity due to bug in GTK+ < 2.14
 116 void wxControl::GTKFixSensitivity(bool WXUNUSED_IN_GTK3(onlyIfUnderMouse))
 117 {
 118 #ifndef __WXGTK3__
 119     if (gtk_check_version(2,14,0)
 120 #if wxUSE_SYSTEM_OPTIONS
 121         && (wxSystemOptions::GetOptionInt(wxT("gtk.control.disable-sensitivity-fix")) != 1)
 122 #endif
 123         )
 124     {
 125         if (!onlyIfUnderMouse || GetScreenRect().Contains(wxGetMousePosition()))
 126         {
 127             Hide();
 128             Show();
 129         }
 130     }
 131 #endif
 132 }
 133
 134 // ----------------------------------------------------------------------------
 135 // wxControl dealing with labels
 136 // ----------------------------------------------------------------------------
 137
 138 void wxControl::GTKSetLabelForLabel(GtkLabel *w, const wxString& label)
 139 {
 140     const wxString labelGTK = GTKConvertMnemonics(label);
 141     gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK));
 142 }
 143
 144 #if wxUSE_MARKUP
 145
 146 void wxControl::GTKSetLabelWithMarkupForLabel(GtkLabel *w, const wxString& label)
 147 {
 148     const wxString labelGTK = GTKConvertMnemonicsWithMarkup(label);
 149     gtk_label_set_markup_with_mnemonic(w, wxGTK_CONV(labelGTK));
 150 }
 151
 152 #endif // wxUSE_MARKUP
 153
 154 // ----------------------------------------------------------------------------
 155 // GtkFrame helpers
 156 //
 157 // GtkFrames do in fact support mnemonics in GTK2+ but not through
 158 // gtk_frame_set_label, rather you need to use a custom label widget
 159 // instead (idea gleaned from the native gtk font dialog code in GTK)
 160 // ----------------------------------------------------------------------------
 161
 162 GtkWidget* wxControl::GTKCreateFrame(const wxString& label)
 163 {
 164     const wxString labelGTK = GTKConvertMnemonics(label);
 165     GtkWidget* labelwidget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK));
 166     gtk_widget_show(labelwidget); // without this it won't show...
 167
 168     GtkWidget* framewidget = gtk_frame_new(NULL);
 169     gtk_frame_set_label_widget(GTK_FRAME(framewidget), labelwidget);
 170
 171     return framewidget; // note that the label is already set so you'll
 172                         // only need to call wxControl::SetLabel afterwards
 173 }
 174
 175 void wxControl::GTKSetLabelForFrame(GtkFrame *w, const wxString& label)
 176 {
 177     wxControlBase::SetLabel(label);
 178
 179     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 180     GTKSetLabelForLabel(labelwidget, label);
 181 }
 182
 183 void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style)
 184 {
 185     GTKApplyStyle(GTK_WIDGET(w), style);
 186     GTKApplyStyle(gtk_frame_get_label_widget(w), style);
 187 }
 188
 189 void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget)
 190 {
 191     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 192
 193     gtk_label_set_mnemonic_widget(labelwidget, widget);
 194 }
 195
 196 // ----------------------------------------------------------------------------
 197 // worker function implementing GTK*Mnemonics() functions
 198 // ----------------------------------------------------------------------------
 199
 200 /* static */
 201 wxString wxControl::GTKRemoveMnemonics(const wxString& label)
 202 {
 203     return wxGTKRemoveMnemonics(label);
 204 }
 205
 206 /* static */
 207 wxString wxControl::GTKConvertMnemonics(const wxString& label)
 208 {
 209     return wxConvertMnemonicsToGTK(label);
 210 }
 211
 212 /* static */
 213 wxString wxControl::GTKConvertMnemonicsWithMarkup(const wxString& label)
 214 {
 215     return wxConvertMnemonicsToGTKMarkup(label);
 216 }
 217
 218 // ----------------------------------------------------------------------------
 219 // wxControl styles (a.k.a. attributes)
 220 // ----------------------------------------------------------------------------
 221
 222 wxVisualAttributes wxControl::GetDefaultAttributes() const
 223 {
 224     return GetDefaultAttributesFromGTKWidget(m_widget,
 225                                              UseGTKStyleBase());
 226 }
 227
 228 // static
 229 wxVisualAttributes
 230 wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
 231                                              bool WXUNUSED_IN_GTK3(useBase),
 232                                              int state)
 233 {
 234     wxVisualAttributes attr;
 235
 236     GtkWidget* tlw = NULL;
 237     if (gtk_widget_get_parent(widget) == NULL)
 238     {
 239         tlw = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 240         gtk_container_add(GTK_CONTAINER(tlw), widget);
 241     }
 242
 243 #ifdef __WXGTK3__
 244     GtkStateFlags stateFlag = GTK_STATE_FLAG_NORMAL;
 245     if (state)
 246     {
 247         wxASSERT(state == GTK_STATE_ACTIVE);
 248         stateFlag = GTK_STATE_FLAG_ACTIVE;
 249     }
 250     GtkStyleContext* sc = gtk_widget_get_style_context(widget);
 251     GdkRGBA c;
 252     gtk_style_context_get_color(sc, stateFlag, &c);
 253     attr.colFg = wxColour(c);
 254     gtk_style_context_get_background_color(sc, stateFlag, &c);
 255     attr.colBg = wxColour(c);
 256     wxNativeFontInfo info;
 257     info.description = const_cast<PangoFontDescription*>(gtk_style_context_get_font(sc, stateFlag));
 258     attr.font = wxFont(info);
 259     info.description = NULL;
 260 #else
 261     GtkStyle* style;
 262
 263     style = gtk_rc_get_style(widget);
 264     if (!style)
 265         style = gtk_widget_get_default_style();
 266
 267     if (style)
 268     {
 269         // get the style's colours
 270         attr.colFg = wxColour(style->fg[state]);
 271         if (useBase)
 272             attr.colBg = wxColour(style->base[state]);
 273         else
 274             attr.colBg = wxColour(style->bg[state]);
 275
 276         // get the style's font
 277         if (!style->font_desc)
 278             style = gtk_widget_get_default_style();
 279         if (style && style->font_desc)
 280         {
 281             wxNativeFontInfo info;
 282             info.description = style->font_desc;
 283             attr.font = wxFont(info);
 284             info.description = NULL;
 285         }
 286     }
 287     else
 288         attr = wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL);
 289 #endif
 290
 291     if (!attr.font.IsOk())
 292     {
 293         GtkSettings *settings = gtk_settings_get_default();
 294         gchar *font_name = NULL;
 295         g_object_get ( settings,
 296                        "gtk-font-name",
 297                        &font_name,
 298                        NULL);
 299         if (!font_name)
 300             attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 301         else
 302             attr.font = wxFont(wxString::FromAscii(font_name));
 303         g_free (font_name);
 304     }
 305
 306     if (tlw)
 307         gtk_widget_destroy(tlw);
 308
 309     return attr;
 310 }
 311
 312 // This is not the same as GetBestSize() because that size may have
 313 // been recalculated and cached by us. We want GTK+ information.
 314 wxSize wxControl::GTKGetPreferredSize(GtkWidget* widget) const
 315 {
 316     GtkRequisition req;
 317 #ifdef __WXGTK3__
 318     gtk_widget_get_preferred_size(widget, NULL, &req);
 319 #else
 320     GTK_WIDGET_GET_CLASS(widget)->size_request(widget, &req);
 321 #endif
 322
 323     return wxSize(req.width, req.height);
 324 }
 325
 326 wxPoint wxControl::GTKGetEntryMargins(GtkEntry* entry) const
 327 {
 328     wxPoint marg(0, 0);
 329
 330 #ifndef __WXGTK3__
 331 #if GTK_CHECK_VERSION(2,10,0)
 332     // The margins we have previously set
 333     const GtkBorder* border = gtk_entry_get_inner_border(entry);
 334     if ( border )
 335     {
 336         marg.x = border->left + border->right;
 337         marg.y = border->top + border->bottom;
 338     }
 339 #endif // GTK+ 2.10+
 340 #else // GTK+ 3
 341     // Gtk3 does not use inner border, but StyleContext and CSS
 342     // TODO: implement it, starting with wxTextEntry::DoSetMargins()
 343 #endif // GTK+ 2/3
 344
 345     int x, y;
 346     gtk_entry_get_layout_offsets(entry, &x, &y);
 347     // inner borders are included. Substract them so we can get other margins
 348     x -= marg.x;
 349     y -= marg.y;
 350     marg.x += 2 * x + 2;
 351     marg.y += 2 * y + 2;
 352
 353     return marg;
 354 }
 355
 356
 357 #endif // wxUSE_CONTROLS