src/msw/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/control.cpp
   3 // Purpose:     wxControl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_CONTROLS
  28
  29 #include "wx/control.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  33     #include "wx/event.h"
  34     #include "wx/app.h"
  35     #include "wx/dcclient.h"
  36     #include "wx/log.h"
  37     #include "wx/settings.h"
  38 #endif
  39
  40 #if wxUSE_LISTCTRL
  41     #include "wx/listctrl.h"
  42 #endif // wxUSE_LISTCTRL
  43
  44 #if wxUSE_TREECTRL
  45     #include "wx/treectrl.h"
  46 #endif // wxUSE_TREECTRL
  47
  48 #include "wx/msw/private.h"
  49 #include "wx/msw/uxtheme.h"
  50
  51 // ----------------------------------------------------------------------------
  52 // wxWin macros
  53 // ----------------------------------------------------------------------------
  54
  55 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  56
  57 // ============================================================================
  58 // wxControl implementation
  59 // ============================================================================
  60
  61 // ----------------------------------------------------------------------------
  62 // wxControl ctor/dtor
  63 // ----------------------------------------------------------------------------
  64
  65 wxControl::~wxControl()
  66 {
  67     m_isBeingDeleted = true;
  68 }
  69
  70 // ----------------------------------------------------------------------------
  71 // control window creation
  72 // ----------------------------------------------------------------------------
  73
  74 bool wxControl::Create(wxWindow *parent,
  75                        wxWindowID id,
  76                        const wxPoint& pos,
  77                        const wxSize& size,
  78                        long style,
  79                        const wxValidator& wxVALIDATOR_PARAM(validator),
  80                        const wxString& name)
  81 {
  82     if ( !wxWindow::Create(parent, id, pos, size, style, name) )
  83         return false;
  84
  85 #if wxUSE_VALIDATORS
  86     SetValidator(validator);
  87 #endif
  88
  89     return true;
  90 }
  91
  92 bool wxControl::MSWCreateControl(const wxChar *classname,
  93                                  const wxString& label,
  94                                  const wxPoint& pos,
  95                                  const wxSize& size)
  96 {
  97     WXDWORD exstyle;
  98     WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), &exstyle);
  99
 100     return MSWCreateControl(classname, msStyle, pos, size, label, exstyle);
 101 }
 102
 103 bool wxControl::MSWCreateControl(const wxChar *classname,
 104                                  WXDWORD style,
 105                                  const wxPoint& pos,
 106                                  const wxSize& size,
 107                                  const wxString& label,
 108                                  WXDWORD exstyle)
 109 {
 110     // if no extended style given, determine it ourselves
 111     if ( exstyle == (WXDWORD)-1 )
 112     {
 113         exstyle = 0;
 114         (void) MSWGetStyle(GetWindowStyle(), &exstyle);
 115     }
 116
 117     // all controls should have this style
 118     style |= WS_CHILD;
 119
 120     // create the control visible if it's currently shown for wxWidgets
 121     if ( m_isShown )
 122     {
 123         style |= WS_VISIBLE;
 124     }
 125
 126     // choose the position for the control: we have a problem with default size
 127     // here as we can't calculate the best size before the control exists
 128     // (DoGetBestSize() may need to use m_hWnd), so just choose the minimal
 129     // possible but non 0 size because 0 window width/height result in problems
 130     // elsewhere
 131     int x = pos.x == wxDefaultCoord ? 0 : pos.x,
 132         y = pos.y == wxDefaultCoord ? 0 : pos.y,
 133         w = size.x == wxDefaultCoord ? 1 : size.x,
 134         h = size.y == wxDefaultCoord ? 1 : size.y;
 135
 136     // ... and adjust it to account for a possible parent frames toolbar
 137     AdjustForParentClientOrigin(x, y);
 138
 139     m_hWnd = (WXHWND)::CreateWindowEx
 140                        (
 141                         exstyle,            // extended style
 142                         classname,          // the kind of control to create
 143                         label.wx_str(),     // the window name
 144                         style,              // the window style
 145                         x, y, w, h,         // the window position and size
 146                         GetHwndOf(GetParent()),  // parent
 147                         (HMENU)GetId(),     // child id
 148                         wxGetInstance(),    // app instance
 149                         NULL                // creation parameters
 150                        );
 151
 152     if ( !m_hWnd )
 153     {
 154 #ifdef __WXDEBUG__
 155         wxFAIL_MSG(wxString::Format
 156                    (
 157                     _T("CreateWindowEx(\"%s\", flags=%08x, ex=%08x) failed"),
 158                     classname, (unsigned int)style, (unsigned int)exstyle
 159                    ));
 160 #endif // __WXDEBUG__
 161
 162         return false;
 163     }
 164
 165     // saving the label in m_labelOrig to return it verbatim
 166     // later in GetLabel()
 167     m_labelOrig = label;
 168
 169     // install wxWidgets window proc for this window
 170     SubclassWin(m_hWnd);
 171
 172     // set up fonts and colours
 173     InheritAttributes();
 174     if ( !m_hasFont )
 175     {
 176         bool setFont = true;
 177
 178         wxFont font = GetDefaultAttributes().font;
 179
 180         // if we set a font for {list,tree}ctrls and the font size is changed in
 181         // the display properties then the font size for these controls doesn't
 182         // automatically adjust when they receive WM_SETTINGCHANGE
 183
 184         // FIXME: replace the dynamic casts with virtual function calls!!
 185 #if wxUSE_LISTCTRL || wxUSE_TREECTRL
 186         bool testFont = false;
 187 #if wxUSE_LISTCTRL
 188         if ( wxDynamicCastThis(wxListCtrl) )
 189             testFont = true;
 190 #endif // wxUSE_LISTCTRL
 191 #if wxUSE_TREECTRL
 192         if ( wxDynamicCastThis(wxTreeCtrl) )
 193             testFont = true;
 194 #endif // wxUSE_TREECTRL
 195
 196         if ( testFont )
 197         {
 198             // not sure if we need to explicitly set the font here for Win95/NT4
 199             // but we definitely can't do it for any newer version
 200             // see wxGetCCDefaultFont() in src/msw/settings.cpp for explanation
 201             // of why this test works
 202
 203             // TODO: test Win95/NT4 to see if this is needed or breaks the
 204             // font resizing as it does on newer versions
 205             if ( font != wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT) )
 206             {
 207                 setFont = false;
 208             }
 209         }
 210 #endif // wxUSE_LISTCTRL || wxUSE_TREECTRL
 211
 212         if ( setFont )
 213         {
 214             SetFont(GetDefaultAttributes().font);
 215         }
 216     }
 217
 218     // set the size now if no initial size specified
 219     SetInitialSize(size);
 220
 221     return true;
 222 }
 223
 224 // ----------------------------------------------------------------------------
 225 // various accessors
 226 // ----------------------------------------------------------------------------
 227
 228 wxBorder wxControl::GetDefaultBorder() const
 229 {
 230     // we want to automatically give controls a sunken style (confusingly,
 231     // it may not really mean sunken at all as we map it to WS_EX_CLIENTEDGE
 232     // which is not sunken at all under Windows XP -- rather, just the default)
 233 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 234     return wxBORDER_SIMPLE;
 235 #else
 236     return wxBORDER_SUNKEN;
 237 #endif
 238 }
 239
 240 WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 241 {
 242     long msStyle = wxWindow::MSWGetStyle(style, exstyle);
 243
 244     if ( AcceptsFocusFromKeyboard() )
 245     {
 246         msStyle |= WS_TABSTOP;
 247     }
 248
 249     return msStyle;
 250 }
 251
 252 wxSize wxControl::DoGetBestSize() const
 253 {
 254     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
 255 }
 256
 257 // This is a helper for all wxControls made with UPDOWN native control.
 258 // In wxMSW it was only wxSpinCtrl derived from wxSpinButton but in
 259 // WinCE of Smartphones this happens also for native wxTextCtrl,
 260 // wxChoice and others.
 261 wxSize wxControl::GetBestSpinnerSize(const bool is_vertical) const
 262 {
 263     // take size according to layout
 264     wxSize bestSize(
 265 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 266                     0,GetCharHeight()
 267 #else
 268                     ::GetSystemMetrics(is_vertical ? SM_CXVSCROLL : SM_CXHSCROLL),
 269                     ::GetSystemMetrics(is_vertical ? SM_CYVSCROLL : SM_CYHSCROLL)
 270 #endif
 271     );
 272
 273     // correct size as for undocumented MSW variants cases (WinCE and perhaps others)
 274     if (bestSize.x==0)
 275         bestSize.x = bestSize.y;
 276     if (bestSize.y==0)
 277         bestSize.y = bestSize.x;
 278
 279     // double size according to layout
 280     if (is_vertical)
 281         bestSize.y *= 2;
 282     else
 283         bestSize.x *= 2;
 284
 285     return bestSize;
 286 }
 287
 288 /* static */ wxVisualAttributes
 289 wxControl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 290 {
 291     wxVisualAttributes attrs;
 292
 293     // old school (i.e. not "common") controls use the standard dialog font
 294     // by default
 295     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 296
 297     // most, or at least many, of the controls use the same colours as the
 298     // buttons -- others will have to override this (and possibly simply call
 299     // GetCompositeControlsDefaultAttributes() from their versions)
 300     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNTEXT);
 301     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 302
 303     return attrs;
 304 }
 305
 306 // another version for the "composite", i.e. non simple controls
 307 /* static */ wxVisualAttributes
 308 wxControl::GetCompositeControlsDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 309 {
 310     wxVisualAttributes attrs;
 311     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 312     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 313     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 314
 315     return attrs;
 316 }
 317
 318 // ----------------------------------------------------------------------------
 319 // message handling
 320 // ----------------------------------------------------------------------------
 321
 322 bool wxControl::ProcessCommand(wxCommandEvent& event)
 323 {
 324     return GetEventHandler()->ProcessEvent(event);
 325 }
 326
 327 bool wxControl::MSWOnNotify(int idCtrl,
 328                             WXLPARAM lParam,
 329                             WXLPARAM* result)
 330 {
 331     wxEventType eventType wxDUMMY_INITIALIZE(wxEVT_NULL);
 332
 333     NMHDR *hdr = (NMHDR*) lParam;
 334     switch ( hdr->code )
 335     {
 336         case NM_CLICK:
 337             eventType = wxEVT_COMMAND_LEFT_CLICK;
 338             break;
 339
 340         case NM_DBLCLK:
 341             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 342             break;
 343
 344         case NM_RCLICK:
 345             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 346             break;
 347
 348         case NM_RDBLCLK:
 349             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 350             break;
 351
 352         case NM_SETFOCUS:
 353             eventType = wxEVT_COMMAND_SET_FOCUS;
 354             break;
 355
 356         case NM_KILLFOCUS:
 357             eventType = wxEVT_COMMAND_KILL_FOCUS;
 358             break;
 359
 360         case NM_RETURN:
 361             eventType = wxEVT_COMMAND_ENTER;
 362             break;
 363
 364         default:
 365             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 366     }
 367
 368     wxCommandEvent event(wxEVT_NULL, m_windowId);
 369     event.SetEventType(eventType);
 370     event.SetEventObject(this);
 371
 372     return GetEventHandler()->ProcessEvent(event);
 373 }
 374
 375 WXHBRUSH wxControl::DoMSWControlColor(WXHDC pDC, wxColour colBg, WXHWND hWnd)
 376 {
 377     HDC hdc = (HDC)pDC;
 378     if ( m_hasFgCol )
 379     {
 380         ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
 381     }
 382
 383     WXHBRUSH hbr = 0;
 384     if ( !colBg.Ok() )
 385     {
 386         hbr = MSWGetBgBrush(pDC, hWnd);
 387
 388         // if the control doesn't have any bg colour, foreground colour will be
 389         // ignored as the return value would be 0 -- so forcefully give it a
 390         // non default background brush in this case
 391         if ( !hbr && m_hasFgCol )
 392             colBg = GetBackgroundColour();
 393     }
 394
 395     // use the background colour override if a valid colour is given
 396     if ( colBg.Ok() )
 397     {
 398         ::SetBkColor(hdc, wxColourToRGB(colBg));
 399
 400         // draw children with the same colour as the parent
 401         wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBg, wxSOLID);
 402
 403         hbr = (WXHBRUSH)brush->GetResourceHandle();
 404
 405     }
 406
 407     // if we use custom background, we should set foreground ourselves too
 408     if ( hbr && !m_hasFgCol )
 409     {
 410         ::SetTextColor(hdc, ::GetSysColor(COLOR_WINDOWTEXT));
 411     }
 412     //else: already set above
 413
 414     return hbr;
 415 }
 416
 417 WXHBRUSH wxControl::MSWControlColor(WXHDC pDC, WXHWND hWnd)
 418 {
 419     wxColour colBg;
 420
 421     if ( HasTransparentBackground() )
 422         ::SetBkMode((HDC)pDC, TRANSPARENT);
 423     else // if the control is opaque it shouldn't use the parents background
 424         colBg = GetBackgroundColour();
 425
 426     return DoMSWControlColor(pDC, colBg, hWnd);
 427 }
 428
 429 WXHBRUSH wxControl::MSWControlColorDisabled(WXHDC pDC)
 430 {
 431     return DoMSWControlColor(pDC,
 432                              wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE),
 433                              GetHWND());
 434 }
 435
 436 // ---------------------------------------------------------------------------
 437 // global functions
 438 // ---------------------------------------------------------------------------
 439
 440 // this is used in radiobox.cpp and slider95.cpp and should be removed as soon
 441 // as it is not needed there any more!
 442 //
 443 // Call this repeatedly for several wnds to find the overall size
 444 // of the widget.
 445 // Call it initially with wxDefaultCoord for all values in rect.
 446 // Keep calling for other widgets, and rect will be modified
 447 // to calculate largest bounding rectangle.
 448 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 449 {
 450     int left = rect->left;
 451     int right = rect->right;
 452     int top = rect->top;
 453     int bottom = rect->bottom;
 454
 455     GetWindowRect((HWND) wnd, rect);
 456
 457     if (left < 0)
 458         return;
 459
 460     if (left < rect->left)
 461         rect->left = left;
 462
 463     if (right > rect->right)
 464         rect->right = right;
 465
 466     if (top < rect->top)
 467         rect->top = top;
 468
 469     if (bottom > rect->bottom)
 470         rect->bottom = bottom;
 471 }
 472
 473 #endif // wxUSE_CONTROLS