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 defined(__WIN95__)
  37
  38 #include "wx/spinctrl.h"
  39 #include "wx/msw/private.h"
  40
  41 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  42     #include <commctrl.h>
  43 #endif
  44
  45 // ----------------------------------------------------------------------------
  46 // macros
  47 // ----------------------------------------------------------------------------
  48
  49 #if !USE_SHARED_LIBRARY
  50     IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
  51 #endif
  52
  53 // ----------------------------------------------------------------------------
  54 // constants
  55 // ----------------------------------------------------------------------------
  56
  57 // the margin between the up-down control and its buddy (can be arbitrary,
  58 // choose what you like - or may be decide during run-time depending on the
  59 // font size?)
  60 static const int MARGIN_BETWEEN = 1;
  61
  62 // ============================================================================
  63 // implementation
  64 // ============================================================================
  65
  66 // ----------------------------------------------------------------------------
  67 // construction
  68 // ----------------------------------------------------------------------------
  69
  70 bool wxSpinCtrl::Create(wxWindow *parent,
  71                         wxWindowID id,
  72                         const wxPoint& pos,
  73                         const wxSize& size,
  74                         long style,
  75                         int min, int max, int initial,
  76                         const wxString& name)
  77 {
  78     // before using DoGetBestSize(), have to set style to let the base class
  79     // know whether this is a horizontal or vertical control (we're always
  80     // vertical)
  81     SetWindowStyle(style | wxSP_VERTICAL);
  82
  83     // calculate the sizes: the size given is the toal size for both controls
  84     // and we need to fit them both in the given width (height is the same)
  85     wxSize sizeText(size), sizeBtn(size);
  86     sizeBtn.x = wxSpinButton::DoGetBestSize().x;
  87     if ( sizeText.x <= 0 )
  88     {
  89         // DEFAULT_ITEM_WIDTH is the default width for the text control
  90         sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
  91     }
  92
  93     sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
  94     if ( sizeText.x <= 0 )
  95     {
  96         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
  97     }
  98
  99     wxPoint posBtn(pos);
 100     posBtn.x += sizeText.x + MARGIN_BETWEEN;
 101
 102     // create the spin button
 103     if ( !wxSpinButton::Create(parent, id, posBtn, sizeBtn, style, name) )
 104     {
 105         return FALSE;
 106     }
 107
 108     SetRange(min, max);
 109     SetValue(initial);
 110
 111     // create the text window
 112     m_hwndBuddy = (WXHWND)::CreateWindowEx
 113                     (
 114                      WS_EX_CLIENTEDGE,       // sunken border
 115                      _T("EDIT"),             // window class
 116                      NULL,                   // no window title
 117                      WS_CHILD | WS_BORDER,   // style (will be shown later)
 118                      pos.x, pos.y,           // position
 119                      0, 0,                   // size (will be set later)
 120                      GetHwndOf(parent),      // parent
 121                      (HMENU)-1,              // control id
 122                      wxGetInstance(),        // app instance
 123                      NULL                    // unused client data
 124                     );
 125
 126     if ( !m_hwndBuddy )
 127     {
 128         wxLogLastError("CreateWindow(buddy text window)");
 129
 130         return FALSE;
 131     }
 132
 133     // should have the same font as the other controls
 134     SetFont(GetParent()->GetFont());
 135
 136     // set the size of the text window - can do it only now, because we
 137     // couldn't call DoGetBestSize() before as font wasn't set
 138     if ( sizeText.y <= 0 )
 139     {
 140         // make it the same height as the button then
 141         sizeText.y = DoGetBestSize().y;
 142     }
 143
 144     DoMoveWindow(pos.x, pos.y,
 145                  sizeText.x + sizeBtn.x + MARGIN_BETWEEN, sizeText.y);
 146
 147     (void)::ShowWindow((HWND)m_hwndBuddy, SW_SHOW);
 148
 149     // associate the text window with the spin button
 150     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
 151
 152     return TRUE;
 153 }
 154
 155 // ----------------------------------------------------------------------------
 156 // when setting font, we need to do it for both controls
 157 // ----------------------------------------------------------------------------
 158
 159 bool wxSpinCtrl::SetFont(const wxFont& font)
 160 {
 161     if ( !wxWindowBase::SetFont(font) )
 162     {
 163         // nothing to do
 164         return FALSE;
 165     }
 166
 167     WXHANDLE hFont = GetFont().GetResourceHandle();
 168     (void)::SendMessage((HWND)m_hwndBuddy, WM_SETFONT, (WPARAM)hFont, TRUE);
 169
 170     return TRUE;
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // size calculations
 175 // ----------------------------------------------------------------------------
 176
 177 wxSize wxSpinCtrl::DoGetBestSize()
 178 {
 179     wxSize sizeBtn = wxSpinButton::DoGetBestSize();
 180     sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
 181
 182     int y;
 183     wxGetCharSize(GetHWND(), NULL, &y, &GetFont());
 184     y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
 185
 186     if ( sizeBtn.y < y )
 187     {
 188         // make the text tall enough
 189         sizeBtn.y = y;
 190     }
 191
 192     return sizeBtn;
 193 }
 194
 195 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 196 {
 197     int widthBtn = wxSpinButton::DoGetBestSize().x;
 198     int widthText = width - widthBtn - MARGIN_BETWEEN;
 199     if ( widthText <= 0 )
 200     {
 201         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 202     }
 203
 204     if ( !::MoveWindow((HWND)m_hwndBuddy, x, y, widthText, height, TRUE) )
 205     {
 206         wxLogLastError("MoveWindow(buddy)");
 207     }
 208
 209     x += widthText + MARGIN_BETWEEN;
 210     if ( !::MoveWindow(GetHwnd(), x, y, widthBtn, height, TRUE) )
 211     {
 212         wxLogLastError("MoveWindow");
 213     }
 214 }
 215
 216 #endif // __WIN95__