| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: spinbutt.cpp |
| 3 | // Purpose: wxSpinCtrl |
| 4 | // Author: Robert |
| 5 | // Modified by: |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) Robert Roebling |
| 8 | // Licence: wxWindows licence |
| 9 | ///////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 12 | #pragma implementation "spinctrl.h" |
| 13 | #endif |
| 14 | |
| 15 | // For compilers that support precompilation, includes "wx.h". |
| 16 | #include "wx/wxprec.h" |
| 17 | |
| 18 | #include "wx/spinctrl.h" |
| 19 | |
| 20 | #if wxUSE_SPINCTRL |
| 21 | |
| 22 | #include "wx/utils.h" |
| 23 | |
| 24 | #include "wx/textctrl.h" // for wxEVT_COMMAND_TEXT_UPDATED |
| 25 | |
| 26 | #include <math.h> |
| 27 | |
| 28 | #include "wx/gtk/private.h" |
| 29 | |
| 30 | //----------------------------------------------------------------------------- |
| 31 | // idle system |
| 32 | //----------------------------------------------------------------------------- |
| 33 | |
| 34 | extern void wxapp_install_idle_handler(); |
| 35 | extern bool g_isIdle; |
| 36 | |
| 37 | static const float sensitivity = 0.02; |
| 38 | |
| 39 | //----------------------------------------------------------------------------- |
| 40 | // data |
| 41 | //----------------------------------------------------------------------------- |
| 42 | |
| 43 | extern bool g_blockEventsOnDrag; |
| 44 | |
| 45 | //----------------------------------------------------------------------------- |
| 46 | // "value_changed" |
| 47 | //----------------------------------------------------------------------------- |
| 48 | |
| 49 | static void gtk_spinctrl_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win ) |
| 50 | { |
| 51 | if (g_isIdle) wxapp_install_idle_handler(); |
| 52 | |
| 53 | if (!win->m_hasVMT) return; |
| 54 | if (g_blockEventsOnDrag) return; |
| 55 | |
| 56 | wxCommandEvent event( wxEVT_COMMAND_SPINCTRL_UPDATED, win->GetId()); |
| 57 | event.SetEventObject( win ); |
| 58 | |
| 59 | // note that we don't use wxSpinCtrl::GetValue() here because it would |
| 60 | // adjust the value to fit into the control range and this means that we |
| 61 | // would never be able to enter an "invalid" value in the control, even |
| 62 | // temporarily - and trying to enter 10 into the control which accepts the |
| 63 | // values in range 5..50 is then, ummm, quite challenging (hint: you can't |
| 64 | // enter 1!) (VZ) |
| 65 | event.SetInt( (int)ceil(win->m_adjust->value) ); |
| 66 | win->GetEventHandler()->ProcessEvent( event ); |
| 67 | } |
| 68 | |
| 69 | //----------------------------------------------------------------------------- |
| 70 | // "changed" |
| 71 | //----------------------------------------------------------------------------- |
| 72 | |
| 73 | static void |
| 74 | gtk_spinctrl_text_changed_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win ) |
| 75 | { |
| 76 | if (!win->m_hasVMT) return; |
| 77 | |
| 78 | if (g_isIdle) |
| 79 | wxapp_install_idle_handler(); |
| 80 | |
| 81 | wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() ); |
| 82 | event.SetEventObject( win ); |
| 83 | |
| 84 | // see above |
| 85 | event.SetInt( (int)ceil(win->m_adjust->value) ); |
| 86 | win->GetEventHandler()->ProcessEvent( event ); |
| 87 | } |
| 88 | |
| 89 | //----------------------------------------------------------------------------- |
| 90 | // wxSpinCtrl |
| 91 | //----------------------------------------------------------------------------- |
| 92 | |
| 93 | IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl) |
| 94 | |
| 95 | BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl) |
| 96 | EVT_CHAR(wxSpinCtrl::OnChar) |
| 97 | END_EVENT_TABLE() |
| 98 | |
| 99 | bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id, |
| 100 | const wxString& value, |
| 101 | const wxPoint& pos, const wxSize& size, |
| 102 | long style, |
| 103 | int min, int max, int initial, |
| 104 | const wxString& name) |
| 105 | { |
| 106 | m_needParent = TRUE; |
| 107 | m_acceptsFocus = TRUE; |
| 108 | |
| 109 | if (!PreCreation( parent, pos, size ) || |
| 110 | !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name )) |
| 111 | { |
| 112 | wxFAIL_MSG( wxT("wxSpinCtrl creation failed") ); |
| 113 | return FALSE; |
| 114 | } |
| 115 | |
| 116 | m_oldPos = initial; |
| 117 | |
| 118 | m_adjust = (GtkAdjustment*) gtk_adjustment_new( initial, min, max, 1.0, 5.0, 0.0); |
| 119 | |
| 120 | m_widget = gtk_spin_button_new( m_adjust, 1, 0 ); |
| 121 | |
| 122 | gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), |
| 123 | (int)(m_windowStyle & wxSP_WRAP) ); |
| 124 | |
| 125 | GtkEnableEvents(); |
| 126 | |
| 127 | m_parent->DoAddChild( this ); |
| 128 | |
| 129 | PostCreation(); |
| 130 | InheritAttributes(); |
| 131 | |
| 132 | wxSize size_best( DoGetBestSize() ); |
| 133 | wxSize new_size( size ); |
| 134 | if (new_size.x == -1) |
| 135 | new_size.x = size_best.x; |
| 136 | if (new_size.y == -1) |
| 137 | new_size.y = size_best.y; |
| 138 | if (new_size.y > size_best.y) |
| 139 | new_size.y = size_best.y; |
| 140 | if ((new_size.x != size.x) || (new_size.y != size.y)) |
| 141 | SetSize( new_size.x, new_size.y ); |
| 142 | |
| 143 | SetValue( value ); |
| 144 | |
| 145 | Show( TRUE ); |
| 146 | |
| 147 | return TRUE; |
| 148 | } |
| 149 | |
| 150 | void wxSpinCtrl::GtkDisableEvents() |
| 151 | { |
| 152 | gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust), |
| 153 | GTK_SIGNAL_FUNC(gtk_spinctrl_callback), |
| 154 | (gpointer) this ); |
| 155 | |
| 156 | gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), |
| 157 | GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback), |
| 158 | (gpointer) this ); |
| 159 | } |
| 160 | |
| 161 | void wxSpinCtrl::GtkEnableEvents() |
| 162 | { |
| 163 | gtk_signal_connect( GTK_OBJECT (m_adjust), |
| 164 | "value_changed", |
| 165 | GTK_SIGNAL_FUNC(gtk_spinctrl_callback), |
| 166 | (gpointer) this ); |
| 167 | |
| 168 | gtk_signal_connect( GTK_OBJECT(m_widget), |
| 169 | "changed", |
| 170 | GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback), |
| 171 | (gpointer)this); |
| 172 | } |
| 173 | |
| 174 | int wxSpinCtrl::GetMin() const |
| 175 | { |
| 176 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 177 | |
| 178 | return (int)ceil(m_adjust->lower); |
| 179 | } |
| 180 | |
| 181 | int wxSpinCtrl::GetMax() const |
| 182 | { |
| 183 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 184 | |
| 185 | return (int)ceil(m_adjust->upper); |
| 186 | } |
| 187 | |
| 188 | int wxSpinCtrl::GetValue() const |
| 189 | { |
| 190 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 191 | |
| 192 | gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) ); |
| 193 | |
| 194 | return (int)ceil(m_adjust->value); |
| 195 | } |
| 196 | |
| 197 | void wxSpinCtrl::SetValue( const wxString& value ) |
| 198 | { |
| 199 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 200 | |
| 201 | int n; |
| 202 | if ( (wxSscanf(value, wxT("%d"), &n) == 1) ) |
| 203 | { |
| 204 | // a number - set it |
| 205 | SetValue(n); |
| 206 | } |
| 207 | else |
| 208 | { |
| 209 | // invalid number - set text as is (wxMSW compatible) |
| 210 | GtkDisableEvents(); |
| 211 | gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) ); |
| 212 | GtkEnableEvents(); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | void wxSpinCtrl::SetValue( int value ) |
| 217 | { |
| 218 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 219 | |
| 220 | float fpos = (float)value; |
| 221 | m_oldPos = fpos; |
| 222 | if (fabs(fpos-m_adjust->value) < sensitivity) return; |
| 223 | |
| 224 | m_adjust->value = fpos; |
| 225 | |
| 226 | GtkDisableEvents(); |
| 227 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); |
| 228 | GtkEnableEvents(); |
| 229 | } |
| 230 | |
| 231 | void wxSpinCtrl::SetSelection(long from, long to) |
| 232 | { |
| 233 | // translate from wxWindows conventions to GTK+ ones: (-1, -1) means the |
| 234 | // entire range |
| 235 | if ( from == -1 && to == -1 ) |
| 236 | { |
| 237 | from = 0; |
| 238 | to = INT_MAX; |
| 239 | } |
| 240 | |
| 241 | gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to ); |
| 242 | } |
| 243 | |
| 244 | void wxSpinCtrl::SetRange(int minVal, int maxVal) |
| 245 | { |
| 246 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 247 | |
| 248 | float fmin = (float)minVal; |
| 249 | float fmax = (float)maxVal; |
| 250 | |
| 251 | if ((fabs(fmin-m_adjust->lower) < sensitivity) && |
| 252 | (fabs(fmax-m_adjust->upper) < sensitivity)) |
| 253 | { |
| 254 | return; |
| 255 | } |
| 256 | |
| 257 | m_adjust->lower = fmin; |
| 258 | m_adjust->upper = fmax; |
| 259 | |
| 260 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); |
| 261 | |
| 262 | // these two calls are required due to some bug in GTK |
| 263 | Refresh(); |
| 264 | SetFocus(); |
| 265 | } |
| 266 | |
| 267 | void wxSpinCtrl::OnChar( wxKeyEvent &event ) |
| 268 | { |
| 269 | wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") ); |
| 270 | |
| 271 | if (event.GetKeyCode() == WXK_RETURN) |
| 272 | { |
| 273 | wxWindow *top_frame = m_parent; |
| 274 | while (top_frame->GetParent() && !(top_frame->GetParent()->IsTopLevel())) |
| 275 | top_frame = top_frame->GetParent(); |
| 276 | |
| 277 | if ( GTK_IS_WINDOW(top_frame->m_widget) ) |
| 278 | { |
| 279 | GtkWindow *window = GTK_WINDOW(top_frame->m_widget); |
| 280 | if ( window ) |
| 281 | { |
| 282 | GtkWidget *widgetDef = window->default_widget; |
| 283 | |
| 284 | if ( widgetDef && GTK_IS_WINDOW(widgetDef) ) |
| 285 | { |
| 286 | gtk_widget_activate(widgetDef); |
| 287 | return; |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | event.Skip(); |
| 294 | } |
| 295 | |
| 296 | bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window ) |
| 297 | { |
| 298 | if (GTK_SPIN_BUTTON(m_widget)->entry.text_area == window) return TRUE; |
| 299 | |
| 300 | if (GTK_SPIN_BUTTON(m_widget)->panel == window) return TRUE; |
| 301 | |
| 302 | return FALSE; |
| 303 | } |
| 304 | |
| 305 | void wxSpinCtrl::ApplyWidgetStyle() |
| 306 | { |
| 307 | SetWidgetStyle(); |
| 308 | gtk_widget_set_style( m_widget, m_widgetStyle ); |
| 309 | } |
| 310 | |
| 311 | wxSize wxSpinCtrl::DoGetBestSize() const |
| 312 | { |
| 313 | wxSize ret( wxControl::DoGetBestSize() ); |
| 314 | return wxSize(95, ret.y); |
| 315 | } |
| 316 | |
| 317 | #endif |
| 318 | // wxUSE_SPINCTRL |