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 #if !USE_SHARED_LIBRARY
  54     IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
  55 #endif
  56
  57 // ----------------------------------------------------------------------------
  58 // constants
  59 // ----------------------------------------------------------------------------
  60
  61 // the margin between the up-down control and its buddy (can be arbitrary,
  62 // choose what you like - or may be decide during run-time depending on the
  63 // font size?)
  64 static const int MARGIN_BETWEEN = 1;
  65
  66 // ============================================================================
  67 // implementation
  68 // ============================================================================
  69
  70 // ----------------------------------------------------------------------------
  71 // construction
  72 // ----------------------------------------------------------------------------
  73
  74 bool wxSpinCtrl::Create(wxWindow *parent,
  75                         wxWindowID id,
  76                         const wxString& value,
  77                         const wxPoint& pos,
  78                         const wxSize& size,
  79                         long style,
  80                         int min, int max, int initial,
  81                         const wxString& name)
  82 {
  83     // before using DoGetBestSize(), have to set style to let the base class
  84     // know whether this is a horizontal or vertical control (we're always
  85     // vertical)
  86     SetWindowStyle(style | wxSP_VERTICAL);
  87
  88     // calculate the sizes: the size given is the toal size for both controls
  89     // and we need to fit them both in the given width (height is the same)
  90     wxSize sizeText(size), sizeBtn(size);
  91     sizeBtn.x = wxSpinButton::DoGetBestSize().x;
  92     if ( sizeText.x <= 0 )
  93     {
  94         // DEFAULT_ITEM_WIDTH is the default width for the text control
  95         sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
  96     }
  97
  98     sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
  99     if ( sizeText.x <= 0 )
 100     {
 101         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 102     }
 103
 104     wxPoint posBtn(pos);
 105     posBtn.x += sizeText.x + MARGIN_BETWEEN;
 106
 107     // create the spin button
 108     if ( !wxSpinButton::Create(parent, id, posBtn, sizeBtn, style, name) )
 109     {
 110         return FALSE;
 111     }
 112
 113     SetRange(min, max);
 114     SetValue(initial);
 115
 116     // create the text window
 117     m_hwndBuddy = (WXHWND)::CreateWindowEx
 118                     (
 119                      WS_EX_CLIENTEDGE,       // sunken border
 120                      _T("EDIT"),             // window class
 121                      NULL,                   // no window title
 122                      WS_CHILD | WS_BORDER,   // style (will be shown later)
 123                      pos.x, pos.y,           // position
 124                      0, 0,                   // size (will be set later)
 125                      GetHwndOf(parent),      // parent
 126                      (HMENU)-1,              // control id
 127                      wxGetInstance(),        // app instance
 128                      NULL                    // unused client data
 129                     );
 130
 131     if ( !m_hwndBuddy )
 132     {
 133         wxLogLastError("CreateWindow(buddy text window)");
 134
 135         return FALSE;
 136     }
 137
 138     // should have the same font as the other controls
 139     SetFont(GetParent()->GetFont());
 140
 141     // set the size of the text window - can do it only now, because we
 142     // couldn't call DoGetBestSize() before as font wasn't set
 143     if ( sizeText.y <= 0 )
 144     {
 145         // make it the same height as the button then
 146         sizeText.y = DoGetBestSize().y;
 147     }
 148
 149     DoMoveWindow(pos.x, pos.y,
 150                  sizeText.x + sizeBtn.x + MARGIN_BETWEEN, sizeText.y);
 151
 152     (void)::ShowWindow((HWND)m_hwndBuddy, SW_SHOW);
 153
 154     // associate the text window with the spin button
 155     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
 156
 157     if ( !value.IsEmpty() )
 158     {
 159         SetValue(value);
 160     }
 161
 162     return TRUE;
 163 }
 164
 165 // ----------------------------------------------------------------------------
 166 // wxTextCtrl-like methods
 167 // ----------------------------------------------------------------------------
 168
 169 void wxSpinCtrl::SetValue(const wxString& text)
 170 {
 171     if ( ::SetWindowText((HWND)m_hwndBuddy, text.c_str()) )
 172     {
 173         wxLogLastError("SetWindowText(buddy)");
 174     }
 175 }
 176
 177 int wxSpinCtrl::GetValue() const
 178 {
 179     wxString val = wxGetWindowText(m_hwndBuddy);
 180
 181     long n;
 182     if ( (wxSscanf(val, wxT("%lu"), &n) != 1) )
 183         n = INT_MIN;
 184
 185     return n;
 186 }
 187
 188 // ----------------------------------------------------------------------------
 189 // when setting font, we need to do it for both controls
 190 // ----------------------------------------------------------------------------
 191
 192 bool wxSpinCtrl::SetFont(const wxFont& font)
 193 {
 194     if ( !wxWindowBase::SetFont(font) )
 195     {
 196         // nothing to do
 197         return FALSE;
 198     }
 199
 200     WXHANDLE hFont = GetFont().GetResourceHandle();
 201     (void)::SendMessage((HWND)m_hwndBuddy, WM_SETFONT, (WPARAM)hFont, TRUE);
 202
 203     return TRUE;
 204 }
 205
 206 // ----------------------------------------------------------------------------
 207 // size calculations
 208 // ----------------------------------------------------------------------------
 209
 210 wxSize wxSpinCtrl::DoGetBestSize() const
 211 {
 212     wxSize sizeBtn = wxSpinButton::DoGetBestSize();
 213     sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
 214
 215     int y;
 216     wxGetCharSize(GetHWND(), NULL, &y, &GetFont());
 217     y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
 218
 219     if ( sizeBtn.y < y )
 220     {
 221         // make the text tall enough
 222         sizeBtn.y = y;
 223     }
 224
 225     return sizeBtn;
 226 }
 227
 228 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 229 {
 230     int widthBtn = wxSpinButton::DoGetBestSize().x;
 231     int widthText = width - widthBtn - MARGIN_BETWEEN;
 232     if ( widthText <= 0 )
 233     {
 234         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 235     }
 236
 237     if ( !::MoveWindow((HWND)m_hwndBuddy, x, y, widthText, height, TRUE) )
 238     {
 239         wxLogLastError("MoveWindow(buddy)");
 240     }
 241
 242     x += widthText + MARGIN_BETWEEN;
 243     if ( !::MoveWindow(GetHwnd(), x, y, widthBtn, height, TRUE) )
 244     {
 245         wxLogLastError("MoveWindow");
 246     }
 247 }
 248
 249 #endif // __WIN95__
 250
 251 #endif
 252        // wxUSE_SPINCTRL
 253