src/msw/spinctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/spinctrl.cpp
   3 // Purpose:     wxSpinCtrl class implementation for Win32
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     22.07.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "spinctrlbase.h"
  18     #pragma implementation "spinctrl.h"
  19 #endif
  20
  21 // ----------------------------------------------------------------------------
  22 // headers
  23 // ----------------------------------------------------------------------------
  24
  25 // for compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/wx.h"
  34 #endif
  35
  36 #if wxUSE_SPINCTRL
  37
  38 #if defined(__WIN95__)
  39
  40 #include "wx/spinctrl.h"
  41 #include "wx/msw/private.h"
  42
  43 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  44     #include <commctrl.h>
  45 #endif
  46
  47 #include <limits.h>         // for INT_MIN
  48
  49 // ----------------------------------------------------------------------------
  50 // macros
  51 // ----------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
  54
  55 BEGIN_EVENT_TABLE(wxSpinCtrl, wxSpinButton)
  56     EVT_SPIN(-1, wxSpinCtrl::OnSpinChange)
  57 END_EVENT_TABLE()
  58
  59 // ----------------------------------------------------------------------------
  60 // constants
  61 // ----------------------------------------------------------------------------
  62
  63 // the margin between the up-down control and its buddy (can be arbitrary,
  64 // choose what you like - or may be decide during run-time depending on the
  65 // font size?)
  66 static const int MARGIN_BETWEEN = 1;
  67
  68 // ============================================================================
  69 // implementation
  70 // ============================================================================
  71
  72 // ----------------------------------------------------------------------------
  73 // construction
  74 // ----------------------------------------------------------------------------
  75
  76 bool wxSpinCtrl::Create(wxWindow *parent,
  77                         wxWindowID id,
  78                         const wxString& value,
  79                         const wxPoint& pos,
  80                         const wxSize& size,
  81                         long style,
  82                         int min, int max, int initial,
  83                         const wxString& name)
  84 {
  85     // before using DoGetBestSize(), have to set style to let the base class
  86     // know whether this is a horizontal or vertical control (we're always
  87     // vertical)
  88     SetWindowStyle(style | wxSP_VERTICAL);
  89
  90     // calculate the sizes: the size given is the toal size for both controls
  91     // and we need to fit them both in the given width (height is the same)
  92     wxSize sizeText(size), sizeBtn(size);
  93     sizeBtn.x = wxSpinButton::DoGetBestSize().x;
  94     if ( sizeText.x <= 0 )
  95     {
  96         // DEFAULT_ITEM_WIDTH is the default width for the text control
  97         sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
  98     }
  99
 100     sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
 101     if ( sizeText.x <= 0 )
 102     {
 103         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 104     }
 105
 106     wxPoint posBtn(pos);
 107     posBtn.x += sizeText.x + MARGIN_BETWEEN;
 108
 109     // create the spin button
 110     if ( !wxSpinButton::Create(parent, id, posBtn, sizeBtn, style, name) )
 111     {
 112         return FALSE;
 113     }
 114
 115     SetRange(min, max);
 116     SetValue(initial);
 117
 118     // create the text window
 119     m_hwndBuddy = (WXHWND)::CreateWindowEx
 120                     (
 121                      WS_EX_CLIENTEDGE,       // sunken border
 122                      _T("EDIT"),             // window class
 123                      NULL,                   // no window title
 124                      WS_CHILD | WS_BORDER,   // style (will be shown later)
 125                      pos.x, pos.y,           // position
 126                      0, 0,                   // size (will be set later)
 127                      GetHwndOf(parent),      // parent
 128                      (HMENU)-1,              // control id
 129                      wxGetInstance(),        // app instance
 130                      NULL                    // unused client data
 131                     );
 132
 133     if ( !m_hwndBuddy )
 134     {
 135         wxLogLastError("CreateWindow(buddy text window)");
 136
 137         return FALSE;
 138     }
 139
 140     // should have the same font as the other controls
 141     SetFont(GetParent()->GetFont());
 142
 143     // set the size of the text window - can do it only now, because we
 144     // couldn't call DoGetBestSize() before as font wasn't set
 145     if ( sizeText.y <= 0 )
 146     {
 147         // make it the same height as the button then
 148         sizeText.y = DoGetBestSize().y;
 149     }
 150
 151     DoMoveWindow(pos.x, pos.y,
 152                  sizeText.x + sizeBtn.x + MARGIN_BETWEEN, sizeText.y);
 153
 154     (void)::ShowWindow((HWND)m_hwndBuddy, SW_SHOW);
 155
 156     // associate the text window with the spin button
 157     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
 158
 159     if ( !value.IsEmpty() )
 160     {
 161         SetValue(value);
 162     }
 163
 164     return TRUE;
 165 }
 166
 167 // ----------------------------------------------------------------------------
 168 // wxTextCtrl-like methods
 169 // ----------------------------------------------------------------------------
 170
 171 void wxSpinCtrl::SetValue(const wxString& text)
 172 {
 173     if ( ::SetWindowText((HWND)m_hwndBuddy, text.c_str()) )
 174     {
 175         wxLogLastError("SetWindowText(buddy)");
 176     }
 177 }
 178
 179 int wxSpinCtrl::GetValue() const
 180 {
 181     wxString val = wxGetWindowText(m_hwndBuddy);
 182
 183     long n;
 184     if ( (wxSscanf(val, wxT("%lu"), &n) != 1) )
 185         n = INT_MIN;
 186
 187     return n;
 188 }
 189
 190 // ----------------------------------------------------------------------------
 191 // when setting font, we need to do it for both controls
 192 // ----------------------------------------------------------------------------
 193
 194 bool wxSpinCtrl::SetFont(const wxFont& font)
 195 {
 196     if ( !wxWindowBase::SetFont(font) )
 197     {
 198         // nothing to do
 199         return FALSE;
 200     }
 201
 202     WXHANDLE hFont = GetFont().GetResourceHandle();
 203     (void)::SendMessage((HWND)m_hwndBuddy, WM_SETFONT, (WPARAM)hFont, TRUE);
 204
 205     return TRUE;
 206 }
 207
 208 // ----------------------------------------------------------------------------
 209 // event processing
 210 // ----------------------------------------------------------------------------
 211
 212 void wxSpinCtrl::OnSpinChange(wxSpinEvent& eventSpin)
 213 {
 214     wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, GetId());
 215     event.SetEventObject(this);
 216     event.SetInt(eventSpin.GetPosition());
 217
 218     (void)GetEventHandler()->ProcessEvent(event);
 219
 220     if ( eventSpin.GetSkipped() )
 221     {
 222         event.Skip();
 223     }
 224 }
 225
 226 // ----------------------------------------------------------------------------
 227 // size calculations
 228 // ----------------------------------------------------------------------------
 229
 230 wxSize wxSpinCtrl::DoGetBestSize() const
 231 {
 232     wxSize sizeBtn = wxSpinButton::DoGetBestSize();
 233     sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
 234
 235     int y;
 236     wxGetCharSize(GetHWND(), NULL, &y, &GetFont());
 237     y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
 238
 239     if ( sizeBtn.y < y )
 240     {
 241         // make the text tall enough
 242         sizeBtn.y = y;
 243     }
 244
 245     return sizeBtn;
 246 }
 247
 248 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 249 {
 250     int widthBtn = wxSpinButton::DoGetBestSize().x;
 251     int widthText = width - widthBtn - MARGIN_BETWEEN;
 252     if ( widthText <= 0 )
 253     {
 254         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 255     }
 256
 257     if ( !::MoveWindow((HWND)m_hwndBuddy, x, y, widthText, height, TRUE) )
 258     {
 259         wxLogLastError("MoveWindow(buddy)");
 260     }
 261
 262     x += widthText + MARGIN_BETWEEN;
 263     if ( !::MoveWindow(GetHwnd(), x, y, widthBtn, height, TRUE) )
 264     {
 265         wxLogLastError("MoveWindow");
 266     }
 267 }
 268
 269 #endif // __WIN95__
 270
 271 #endif
 272        // wxUSE_SPINCTRL
 273