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
  25 #include "wx/gtk/private/mnemonics.h"
  26
  27 // ============================================================================
  28 // wxControl implementation
  29 // ============================================================================
  30
  31 // ----------------------------------------------------------------------------
  32 // wxControl creation
  33 // ----------------------------------------------------------------------------
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  36
  37 wxControl::wxControl()
  38 {
  39 }
  40
  41 bool wxControl::Create( wxWindow *parent,
  42                       wxWindowID id,
  43                       const wxPoint &pos,
  44                       const wxSize &size,
  45                       long style,
  46                       const wxValidator& validator,
  47                       const wxString &name )
  48 {
  49     bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  50
  51 #if wxUSE_VALIDATORS
  52     SetValidator(validator);
  53 #endif
  54
  55     return ret;
  56 }
  57
  58 wxSize wxControl::DoGetBestSize() const
  59 {
  60     // Do not return any arbitrary default value...
  61     wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
  62
  63     GtkRequisition req;
  64     req.width = 2;
  65     req.height = 2;
  66     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
  67         (m_widget, &req );
  68
  69     wxSize best(req.width, req.height);
  70     CacheBestSize(best);
  71     return best;
  72 }
  73
  74 void wxControl::PostCreation(const wxSize& size)
  75 {
  76     wxWindow::PostCreation();
  77
  78     // NB: GetBestSize needs to know the style, otherwise it will assume
  79     //     default font and if the user uses a different font, determined
  80     //     best size will be different (typically, smaller) than the desired
  81     //     size. This call ensure that a style is available at the time
  82     //     GetBestSize is called.
  83     gtk_widget_ensure_style(m_widget);
  84
  85     ApplyWidgetStyle();
  86     SetInitialSize(size);
  87 }
  88
  89 // ----------------------------------------------------------------------------
  90 // wxControl dealing with labels
  91 // ----------------------------------------------------------------------------
  92
  93 void wxControl::GTKSetLabelForLabel(GtkLabel *w, const wxString& label)
  94 {
  95     // save the original label
  96     wxControlBase::SetLabel(label);
  97
  98     const wxString labelGTK = GTKConvertMnemonics(label);
  99     gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK));
 100 }
 101
 102 void wxControl::GTKSetLabelWithMarkupForLabel(GtkLabel *w, const wxString& label)
 103 {
 104     const wxString labelGTK = GTKConvertMnemonicsWithMarkup(label);
 105     gtk_label_set_markup_with_mnemonic(w, wxGTK_CONV(labelGTK));
 106 }
 107
 108
 109 // ----------------------------------------------------------------------------
 110 // GtkFrame helpers
 111 //
 112 // GtkFrames do in fact support mnemonics in GTK2+ but not through
 113 // gtk_frame_set_label, rather you need to use a custom label widget
 114 // instead (idea gleaned from the native gtk font dialog code in GTK)
 115 // ----------------------------------------------------------------------------
 116
 117 GtkWidget* wxControl::GTKCreateFrame(const wxString& label)
 118 {
 119     const wxString labelGTK = GTKConvertMnemonics(label);
 120     GtkWidget* labelwidget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK));
 121     gtk_widget_show(labelwidget); // without this it won't show...
 122
 123     GtkWidget* framewidget = gtk_frame_new(NULL);
 124     gtk_frame_set_label_widget(GTK_FRAME(framewidget), labelwidget);
 125
 126     return framewidget; // note that the label is already set so you'll
 127                         // only need to call wxControl::SetLabel afterwards
 128 }
 129
 130 void wxControl::GTKSetLabelForFrame(GtkFrame *w, const wxString& label)
 131 {
 132     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 133     GTKSetLabelForLabel(labelwidget, label);
 134 }
 135
 136 void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style)
 137 {
 138     gtk_widget_modify_style(GTK_WIDGET(w), style);
 139     gtk_widget_modify_style(gtk_frame_get_label_widget (w), style);
 140 }
 141
 142 void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget)
 143 {
 144     GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w));
 145
 146     gtk_label_set_mnemonic_widget(labelwidget, widget);
 147 }
 148
 149 // ----------------------------------------------------------------------------
 150 // worker function implementing GTK*Mnemonics() functions
 151 // ----------------------------------------------------------------------------
 152
 153 /* static */
 154 wxString wxControl::GTKRemoveMnemonics(const wxString& label)
 155 {
 156     return wxGTKRemoveMnemonics(label);
 157 }
 158
 159 /* static */
 160 wxString wxControl::GTKConvertMnemonics(const wxString& label)
 161 {
 162     return wxConvertMnemonicsToGTK(label);
 163 }
 164
 165 /* static */
 166 wxString wxControl::GTKConvertMnemonicsWithMarkup(const wxString& label)
 167 {
 168     return wxConvertMnemonicsToGTKMarkup(label);
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // wxControl styles (a.k.a. attributes)
 173 // ----------------------------------------------------------------------------
 174
 175 wxVisualAttributes wxControl::GetDefaultAttributes() const
 176 {
 177     return GetDefaultAttributesFromGTKWidget(m_widget,
 178                                              UseGTKStyleBase());
 179 }
 180
 181 // static
 182 wxVisualAttributes
 183 wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
 184                                              bool useBase,
 185                                              int state)
 186 {
 187     GtkStyle* style;
 188     wxVisualAttributes attr;
 189
 190     style = gtk_rc_get_style(widget);
 191     if (!style)
 192         style = gtk_widget_get_default_style();
 193
 194     if (!style)
 195     {
 196         return wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL);
 197     }
 198
 199     if (state == -1)
 200         state = GTK_STATE_NORMAL;
 201
 202     // get the style's colours
 203     attr.colFg = wxColour(style->fg[state]);
 204     if (useBase)
 205         attr.colBg = wxColour(style->base[state]);
 206     else
 207         attr.colBg = wxColour(style->bg[state]);
 208
 209     // get the style's font
 210     if ( !style->font_desc )
 211         style = gtk_widget_get_default_style();
 212     if ( style && style->font_desc )
 213     {
 214         wxNativeFontInfo info;
 215         info.description = pango_font_description_copy(style->font_desc);
 216         attr.font = wxFont(info);
 217     }
 218     else
 219     {
 220         GtkSettings *settings = gtk_settings_get_default();
 221         gchar *font_name = NULL;
 222         g_object_get ( settings,
 223                        "gtk-font-name",
 224                        &font_name,
 225                        NULL);
 226         if (!font_name)
 227             attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 228         else
 229             attr.font = wxFont(wxString::FromAscii(font_name));
 230         g_free (font_name);
 231     }
 232
 233     return attr;
 234 }
 235
 236
 237 //static
 238 wxVisualAttributes
 239 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNew_t widget_new,
 240                                              bool useBase,
 241                                              int state)
 242 {
 243     wxVisualAttributes attr;
 244     // NB: we need toplevel window so that GTK+ can find the right style
 245     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 246     GtkWidget* widget = widget_new();
 247     gtk_container_add(GTK_CONTAINER(wnd), widget);
 248     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 249     gtk_widget_destroy(wnd);
 250     return attr;
 251 }
 252
 253 //static
 254 wxVisualAttributes
 255 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromStr_t widget_new,
 256                                              bool useBase,
 257                                              int state)
 258 {
 259     wxVisualAttributes attr;
 260     // NB: we need toplevel window so that GTK+ can find the right style
 261     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 262     GtkWidget* widget = widget_new("");
 263     gtk_container_add(GTK_CONTAINER(wnd), widget);
 264     attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state);
 265     gtk_widget_destroy(wnd);
 266     return attr;
 267 }
 268
 269
 270 //static
 271 wxVisualAttributes
 272 wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromAdj_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(NULL);
 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 // ----------------------------------------------------------------------------
 287 // idle handling
 288 // ----------------------------------------------------------------------------
 289
 290 void wxControl::OnInternalIdle()
 291 {
 292     if ( GtkShowFromOnIdle() )
 293         return;
 294
 295     if ( GTK_WIDGET_REALIZED(m_widget) )
 296     {
 297         GTKUpdateCursor();
 298     }
 299
 300     if ( wxUpdateUIEvent::CanUpdate(this) && IsVisibleOnScreen() )
 301         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 302 }
 303
 304 #endif // wxUSE_CONTROLS