| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: common/popupcmn.cpp |
| 3 | // Purpose: implementation of wxPopupTransientWindow |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 06.01.01 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
| 9 | // License: wxWindows license |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "popupwinbase.h" |
| 22 | #endif |
| 23 | |
| 24 | // For compilers that support precompilation, includes "wx.h". |
| 25 | #include "wx/wxprec.h" |
| 26 | |
| 27 | #ifdef __BORLANDC__ |
| 28 | #pragma hdrstop |
| 29 | #endif |
| 30 | |
| 31 | #if wxUSE_POPUPWIN && !defined(__WXMOTIF__) |
| 32 | |
| 33 | #include "wx/popupwin.h" |
| 34 | |
| 35 | #ifndef WX_PRECOMP |
| 36 | #include "wx/combobox.h" // wxComboControl |
| 37 | #endif //WX_PRECOMP |
| 38 | |
| 39 | #ifdef __WXUNIVERSAL__ |
| 40 | #include "wx/univ/renderer.h" |
| 41 | #endif // __WXUNIVERSAL__ |
| 42 | |
| 43 | // ---------------------------------------------------------------------------- |
| 44 | // private classes |
| 45 | // ---------------------------------------------------------------------------- |
| 46 | |
| 47 | // event handlers which we use to intercept events which cause the popup to |
| 48 | // disappear |
| 49 | class wxPopupWindowHandler : public wxEvtHandler |
| 50 | { |
| 51 | public: |
| 52 | wxPopupWindowHandler(wxPopupTransientWindow *popup) { m_popup = popup; } |
| 53 | |
| 54 | protected: |
| 55 | // event handlers |
| 56 | void OnLeftDown(wxMouseEvent& event); |
| 57 | |
| 58 | private: |
| 59 | wxPopupTransientWindow *m_popup; |
| 60 | |
| 61 | DECLARE_EVENT_TABLE() |
| 62 | }; |
| 63 | |
| 64 | class wxPopupFocusHandler : public wxEvtHandler |
| 65 | { |
| 66 | public: |
| 67 | wxPopupFocusHandler(wxPopupTransientWindow *popup) { m_popup = popup; } |
| 68 | |
| 69 | protected: |
| 70 | // event handlers |
| 71 | void OnKillFocus(wxFocusEvent& event); |
| 72 | |
| 73 | private: |
| 74 | wxPopupTransientWindow *m_popup; |
| 75 | |
| 76 | DECLARE_EVENT_TABLE() |
| 77 | }; |
| 78 | |
| 79 | // ---------------------------------------------------------------------------- |
| 80 | // event tables |
| 81 | // ---------------------------------------------------------------------------- |
| 82 | |
| 83 | BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler) |
| 84 | EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown) |
| 85 | END_EVENT_TABLE() |
| 86 | |
| 87 | BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler) |
| 88 | EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus) |
| 89 | END_EVENT_TABLE() |
| 90 | |
| 91 | // ============================================================================ |
| 92 | // implementation |
| 93 | // ============================================================================ |
| 94 | |
| 95 | // ---------------------------------------------------------------------------- |
| 96 | // wxPopupWindowBase |
| 97 | // ---------------------------------------------------------------------------- |
| 98 | |
| 99 | bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags)) |
| 100 | { |
| 101 | return TRUE; |
| 102 | } |
| 103 | |
| 104 | void wxPopupWindowBase::Position(const wxPoint& ptOrigin, |
| 105 | const wxSize& size) |
| 106 | { |
| 107 | wxSize sizeScreen = wxGetDisplaySize(), |
| 108 | sizeSelf = GetSize(); |
| 109 | |
| 110 | // is there enough space to put the popup below the window (where we put it |
| 111 | // by default)? |
| 112 | wxCoord y = ptOrigin.y + size.y; |
| 113 | if ( y + sizeSelf.y > sizeScreen.y ) |
| 114 | { |
| 115 | // check if there is enough space above |
| 116 | if ( ptOrigin.y > sizeSelf.y ) |
| 117 | { |
| 118 | // do position the control above the window |
| 119 | y -= size.y + sizeSelf.y; |
| 120 | } |
| 121 | //else: not enough space below nor above, leave below |
| 122 | } |
| 123 | |
| 124 | // now check left/right too |
| 125 | wxCoord x = ptOrigin.x + size.x; |
| 126 | if ( x + sizeSelf.x > sizeScreen.x ) |
| 127 | { |
| 128 | // check if there is enough space to the left |
| 129 | if ( ptOrigin.x > sizeSelf.x ) |
| 130 | { |
| 131 | // do position the control to the left |
| 132 | x -= size.x + sizeSelf.x; |
| 133 | } |
| 134 | //else: not enough space there neither, leave in default position |
| 135 | } |
| 136 | |
| 137 | Move(x, y, wxSIZE_NO_ADJUSTMENTS); |
| 138 | } |
| 139 | |
| 140 | // ---------------------------------------------------------------------------- |
| 141 | // wxPopupTransientWindow |
| 142 | // ---------------------------------------------------------------------------- |
| 143 | |
| 144 | void wxPopupTransientWindow::Init() |
| 145 | { |
| 146 | m_child = |
| 147 | m_focus = (wxWindow *)NULL; |
| 148 | } |
| 149 | |
| 150 | wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent) |
| 151 | { |
| 152 | Init(); |
| 153 | |
| 154 | (void)Create(parent); |
| 155 | } |
| 156 | |
| 157 | wxPopupTransientWindow::~wxPopupTransientWindow() |
| 158 | { |
| 159 | PopHandlers(); |
| 160 | } |
| 161 | |
| 162 | void wxPopupTransientWindow::PopHandlers() |
| 163 | { |
| 164 | if ( m_child ) |
| 165 | { |
| 166 | m_child->PopEventHandler(TRUE /* delete it */); |
| 167 | m_child->ReleaseMouse(); |
| 168 | m_child = NULL; |
| 169 | } |
| 170 | |
| 171 | if ( m_focus ) |
| 172 | { |
| 173 | m_focus->PopEventHandler(TRUE /* delete it */); |
| 174 | m_focus = NULL; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | void wxPopupTransientWindow::Popup(wxWindow *winFocus) |
| 179 | { |
| 180 | const wxWindowList& children = GetChildren(); |
| 181 | if ( children.GetCount() ) |
| 182 | { |
| 183 | m_child = children.GetFirst()->GetData(); |
| 184 | } |
| 185 | else |
| 186 | { |
| 187 | m_child = this; |
| 188 | } |
| 189 | |
| 190 | // we can't capture mouse before the window is shown in wxGTL |
| 191 | #ifdef __WXGTK__ |
| 192 | Show(); |
| 193 | #endif |
| 194 | |
| 195 | m_child->CaptureMouse(); |
| 196 | m_child->PushEventHandler(new wxPopupWindowHandler(this)); |
| 197 | |
| 198 | #ifndef __WXGTK__ |
| 199 | Show(); |
| 200 | #endif |
| 201 | |
| 202 | m_focus = winFocus ? winFocus : this; |
| 203 | m_focus->PushEventHandler(new wxPopupFocusHandler(this)); |
| 204 | m_focus->SetFocus(); |
| 205 | } |
| 206 | |
| 207 | void wxPopupTransientWindow::Dismiss() |
| 208 | { |
| 209 | PopHandlers(); |
| 210 | |
| 211 | Hide(); |
| 212 | } |
| 213 | |
| 214 | void wxPopupTransientWindow::DismissAndNotify() |
| 215 | { |
| 216 | Dismiss(); |
| 217 | |
| 218 | OnDismiss(); |
| 219 | } |
| 220 | |
| 221 | void wxPopupTransientWindow::OnDismiss() |
| 222 | { |
| 223 | // nothing to do here - but it may be interesting for derived class |
| 224 | } |
| 225 | |
| 226 | bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event)) |
| 227 | { |
| 228 | // no special processing here |
| 229 | return FALSE; |
| 230 | } |
| 231 | |
| 232 | #if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__) |
| 233 | |
| 234 | // ---------------------------------------------------------------------------- |
| 235 | // wxPopupComboWindow |
| 236 | // ---------------------------------------------------------------------------- |
| 237 | |
| 238 | wxPopupComboWindow::wxPopupComboWindow(wxComboControl *parent) |
| 239 | : wxPopupTransientWindow(parent) |
| 240 | { |
| 241 | m_combo = parent; |
| 242 | } |
| 243 | |
| 244 | bool wxPopupComboWindow::Create(wxComboControl *parent) |
| 245 | { |
| 246 | m_combo = parent; |
| 247 | |
| 248 | return wxPopupWindow::Create(parent); |
| 249 | } |
| 250 | |
| 251 | void wxPopupComboWindow::PositionNearCombo() |
| 252 | { |
| 253 | // the origin point must be in screen coords |
| 254 | wxPoint ptOrigin = m_combo->ClientToScreen(wxPoint(0, 0)); |
| 255 | |
| 256 | #if 0 //def __WXUNIVERSAL__ |
| 257 | // account for the fact that (0, 0) is not the top left corner of the |
| 258 | // window: there is also the border |
| 259 | wxRect rectBorders = m_combo->GetRenderer()-> |
| 260 | GetBorderDimensions(m_combo->GetBorder()); |
| 261 | ptOrigin.x -= rectBorders.x; |
| 262 | ptOrigin.y -= rectBorders.y; |
| 263 | #endif // __WXUNIVERSAL__ |
| 264 | |
| 265 | // position below or above the combobox: the width is 0 to put it exactly |
| 266 | // below us, not to the left or to the right |
| 267 | Position(ptOrigin, wxSize(0, m_combo->GetSize().y)); |
| 268 | } |
| 269 | |
| 270 | void wxPopupComboWindow::OnDismiss() |
| 271 | { |
| 272 | m_combo->OnDismiss(); |
| 273 | } |
| 274 | |
| 275 | #endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__) |
| 276 | |
| 277 | // ---------------------------------------------------------------------------- |
| 278 | // wxPopupWindowHandler |
| 279 | // ---------------------------------------------------------------------------- |
| 280 | |
| 281 | void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event) |
| 282 | { |
| 283 | // let the window have it first (we're the first event handler in the chain |
| 284 | // of handlers for this window) |
| 285 | if ( m_popup->ProcessLeftDown(event) ) |
| 286 | { |
| 287 | return; |
| 288 | } |
| 289 | |
| 290 | wxPoint pos = event.GetPosition(); |
| 291 | |
| 292 | // scrollbar on which the click occured |
| 293 | wxWindow *sbar = NULL; |
| 294 | |
| 295 | wxWindow *win = (wxWindow *)event.GetEventObject(); |
| 296 | switch ( win->HitTest(pos.x, pos.y) ) |
| 297 | { |
| 298 | case wxHT_WINDOW_OUTSIDE: |
| 299 | // clicking outside a popup dismisses it |
| 300 | m_popup->DismissAndNotify(); |
| 301 | break; |
| 302 | |
| 303 | #ifdef __WXUNIVERSAL__ |
| 304 | case wxHT_WINDOW_HORZ_SCROLLBAR: |
| 305 | sbar = win->GetScrollbar(wxHORIZONTAL); |
| 306 | break; |
| 307 | |
| 308 | case wxHT_WINDOW_VERT_SCROLLBAR: |
| 309 | sbar = win->GetScrollbar(wxVERTICAL); |
| 310 | break; |
| 311 | #endif |
| 312 | |
| 313 | default: |
| 314 | // forgot to update the switch after adding a new hit test code? |
| 315 | wxFAIL_MSG( _T("unexpected HitTest() return value") ); |
| 316 | // fall through |
| 317 | |
| 318 | case wxHT_WINDOW_CORNER: |
| 319 | // don't actually know if this one is good for anything, but let it |
| 320 | // pass just in case |
| 321 | |
| 322 | case wxHT_WINDOW_INSIDE: |
| 323 | // let the normal processing take place |
| 324 | event.Skip(); |
| 325 | break; |
| 326 | } |
| 327 | |
| 328 | if ( sbar ) |
| 329 | { |
| 330 | // translate the event coordinates to the scrollbar ones |
| 331 | pos = sbar->ScreenToClient(win->ClientToScreen(pos)); |
| 332 | |
| 333 | // and give the event to it |
| 334 | wxMouseEvent event2 = event; |
| 335 | event2.m_x = pos.x; |
| 336 | event2.m_y = pos.y; |
| 337 | |
| 338 | (void)sbar->GetEventHandler()->ProcessEvent(event2); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | // ---------------------------------------------------------------------------- |
| 343 | // wxPopupFocusHandler |
| 344 | // ---------------------------------------------------------------------------- |
| 345 | |
| 346 | void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event) |
| 347 | { |
| 348 | // when we lose focus we always disappear |
| 349 | |
| 350 | // But if m_popup was about to get the focus, |
| 351 | // don't disappear. |
| 352 | if (event.GetWindow() != m_popup) |
| 353 | m_popup->DismissAndNotify(); |
| 354 | } |
| 355 | |
| 356 | #endif // wxUSE_POPUPWIN |