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     ApplyWidgetStyle();
  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     // save the original label
 127     wxControlBase::SetLabel(label);
 128
 129     const wxString labelGTK = GTKConvertMnemonics(label);
 130     gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK));
 131 }
 132
 133 void wxControl::GTKSetLabelWithMarkupForLabel(GtkLabel *w, const wxString& label)
 134 {
 135     const wxString labelGTK = GTKConvertMnemonicsWithMarkup(label);
 136     gtk_label_set_markup_with_mnemonic(w, wxGTK_CONV(labelGTK));
 137 }
 138
 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     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 164     GTKSetLabelForLabel(labelwidget, label);
 165 }
 166
 167 void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style)
 168 {
 169     gtk_widget_modify_style(GTK_WIDGET(w), style);
 170     gtk_widget_modify_style(gtk_frame_get_label_widget (w), style);
 171 }
 172
 173 void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget)
 174 {
 175     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 176
 177     gtk_label_set_mnemonic_widget(labelwidget, widget);
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // worker function implementing GTK*Mnemonics() functions
 182 // ----------------------------------------------------------------------------
 183
 184 /* static */
 185 wxString wxControl::GTKRemoveMnemonics(const wxString& label)
 186 {
 187     return wxGTKRemoveMnemonics(label);
 188 }
 189
 190 /* static */
 191 wxString wxControl::GTKConvertMnemonics(const wxString& label)
 192 {
 193     return wxConvertMnemonicsToGTK(label);
 194 }
 195
 196 /* static */
 197 wxString wxControl::GTKConvertMnemonicsWithMarkup(const wxString& label)
 198 {
 199     return wxConvertMnemonicsToGTKMarkup(label);
 200 }
 201
 202 // ----------------------------------------------------------------------------
 203 // wxControl styles (a.k.a. attributes)
 204 // ----------------------------------------------------------------------------
 205
 206 wxVisualAttributes wxControl::GetDefaultAttributes() const
 207 {
 208     return GetDefaultAttributesFromGTKWidget(m_widget,
 209                                              UseGTKStyleBase());
 210 }
 211
 212 // static
 213 wxVisualAttributes
 214 wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
 215                                              bool useBase,
 216                                              int state)
 217 {
 218     GtkStyle* style;
 219     wxVisualAttributes attr;
 220
 221     style = gtk_rc_get_style(widget);
 222     if (!style)
 223         style = gtk_widget_get_default_style();
 224
 225     if (!style)
 226     {
 227         return wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL);
 228     }
 229
 230     if (state == -1)
 231         state = GTK_STATE_NORMAL;
 232
 233     // get the style's colours
 234     attr.colFg = wxColour(style->fg[state]);
 235     if (useBase)
 236         attr.colBg = wxColour(style->base[state]);
 237     else
 238         attr.colBg = wxColour(style->bg[state]);
 239
 240     // get the style's font
 241     if ( !style->font_desc )
 242         style = gtk_widget_get_default_style();
 243     if ( style && style->font_desc )
 244     {
 245         wxNativeFontInfo info;
 246         info.description = pango_font_description_copy(style->font_desc);
 247         attr.font = wxFont(info);
 248     }
 249     else
 250     {
 251         GtkSettings *settings = gtk_settings_get_default();
 252         gchar *font_name = NULL;
 253         g_object_get ( settings,
 254                        "gtk-font-name",
 255                        &font_name,
 256                        NULL);
 257         if (!font_name)
 258             attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 259         else
 260             attr.font = wxFont(wxString::FromAscii(font_name));
 261         g_free (font_name);
 262     }
 263
 264     return attr;
 265 }
 266
 267
 268 //static
 269 wxVisualAttributes
 270 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNew_t widget_new,
 271                                              bool useBase,
 272                                              int state)
 273 {
 274     wxVisualAttributes attr;
 275     // NB: we need toplevel window so that GTK+ can find the right style
 276     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 277     GtkWidget* widget = widget_new();
 278     gtk_container_add(GTK_CONTAINER(wnd), widget);
 279     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 280     gtk_widget_destroy(wnd);
 281     return attr;
 282 }
 283
 284 //static
 285 wxVisualAttributes
 286 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromStr_t widget_new,
 287                                              bool useBase,
 288                                              int state)
 289 {
 290     wxVisualAttributes attr;
 291     // NB: we need toplevel window so that GTK+ can find the right style
 292     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 293     GtkWidget* widget = widget_new("");
 294     gtk_container_add(GTK_CONTAINER(wnd), widget);
 295     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 296     gtk_widget_destroy(wnd);
 297     return attr;
 298 }
 299
 300
 301 //static
 302 wxVisualAttributes
 303 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromAdj_t widget_new,
 304                                              bool useBase,
 305                                              int state)
 306 {
 307     wxVisualAttributes attr;
 308     // NB: we need toplevel window so that GTK+ can find the right style
 309     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 310     GtkWidget* widget = widget_new(NULL);
 311     gtk_container_add(GTK_CONTAINER(wnd), widget);
 312     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 313     gtk_widget_destroy(wnd);
 314     return attr;
 315 }
 316
 317 // ----------------------------------------------------------------------------
 318 // idle handling
 319 // ----------------------------------------------------------------------------
 320
 321 void wxControl::OnInternalIdle()
 322 {
 323     if ( GtkShowFromOnIdle() )
 324         return;
 325
 326     if ( GTK_WIDGET_REALIZED(m_widget) )
 327     {
 328         GTKUpdateCursor();
 329     }
 330
 331     if ( wxUpdateUIEvent::CanUpdate(this) && IsShownOnScreen() )
 332         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 333 }
 334
 335 #endif // wxUSE_CONTROLS