src/msw/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        button.cpp
   3 // Purpose:     wxButton
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "button.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/button.h"
  25 #endif
  26
  27 #include "wx/msw/private.h"
  28
  29 #if !USE_SHARED_LIBRARY
  30 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  31 #endif
  32
  33 #define BUTTON_HEIGHT_FACTOR (EDIT_CONTROL_FACTOR * 1.1)
  34
  35 // Buttons
  36
  37 bool wxButton::MSWCommand(WXUINT param, WXWORD id)
  38 {
  39   if (param == BN_CLICKED)
  40   {
  41     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
  42     event.SetEventObject(this);
  43     ProcessCommand(event);
  44     return TRUE;
  45   }
  46   else return FALSE;
  47 }
  48
  49 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  50            const wxPoint& pos,
  51            const wxSize& size, long style,
  52            const wxValidator& validator,
  53            const wxString& name)
  54 {
  55   SetName(name);
  56   SetValidator(validator);
  57
  58   parent->AddChild((wxButton *)this);
  59   m_backgroundColour = parent->GetDefaultBackgroundColour() ;
  60   m_foregroundColour = parent->GetDefaultForegroundColour() ;
  61
  62   m_windowStyle = (long&)style;
  63
  64   int x = pos.x;
  65   int y = pos.y;
  66   int width = size.x;
  67   int height = size.y;
  68
  69   if (id == -1)
  70     m_windowId = NewControlId();
  71   else
  72     m_windowId = id;
  73
  74   DWORD exStyle = MakeExtendedStyle(m_windowStyle);
  75   HWND wx_button =
  76     CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD,
  77                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
  78                     wxGetInstance(), NULL);
  79
  80 #if CTL3D
  81 //  if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
  82 //    Ctl3dSubclassCtl(wx_button);
  83 #endif
  84
  85   m_hWnd = (WXHWND)wx_button;
  86
  87   // Subclass again for purposes of dialog editing mode
  88   SubclassWin((WXHWND)wx_button);
  89
  90   SetFont(* parent->GetFont());
  91
  92   SetSize(x, y, width, height);
  93   ShowWindow(wx_button, SW_SHOW);
  94
  95   return TRUE;
  96 }
  97
  98 void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
  99 {
 100   int currentX, currentY;
 101   GetPosition(&currentX, &currentY);
 102   int x1 = x;
 103   int y1 = y;
 104   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 105     x1 = currentX;
 106   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 107     y1 = currentY;
 108
 109   int actualWidth = width;
 110   int actualHeight = height;
 111   int ww, hh;
 112   GetSize(&ww, &hh);
 113
 114   int current_width;
 115   int cyf;
 116   char buf[300];
 117   GetWindowText((HWND) GetHWND(), buf, 300);
 118   GetTextExtent(buf, &current_width, &cyf,NULL,NULL,GetFont());
 119
 120   // If we're prepared to use the existing width, then...
 121   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 122     actualWidth = ww;
 123   else if (width == -1)
 124   {
 125     int cx;
 126     int cy;
 127     wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
 128     actualWidth = (int)(current_width + 3*cx) ;
 129   }
 130
 131   // If we're prepared to use the existing height, then...
 132   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 133     actualHeight = hh;
 134   else if (height == -1)
 135   {
 136     actualHeight = (int)(cyf*BUTTON_HEIGHT_FACTOR) ;
 137   }
 138
 139   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 140 }
 141
 142 void wxButton::SetDefault(void)
 143 {
 144   wxWindow *parent = (wxWindow *)GetParent();
 145   if (parent)
 146     parent->SetDefaultItem(this);
 147
 148   if (parent)
 149   {
 150     SendMessage((HWND) parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
 151   }
 152 }
 153
 154 wxString wxButton::GetLabel(void) const
 155 {
 156     GetWindowText((HWND) GetHWND(), wxBuffer, 300);
 157     return wxString(wxBuffer);
 158 }
 159
 160 void wxButton::SetLabel(const wxString& label)
 161 {
 162   SetWindowText((HWND) GetHWND(), (const char *) label);
 163 }
 164
 165 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 166                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 167 {
 168 /*
 169     WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
 170 //    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
 171     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
 172         GetForegroundColour().Blue()));
 173
 174         return hBrush;
 175 */
 176   // This doesn't in fact seem to make any difference at all - buttons are always
 177   // the same colour.
 178   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 179   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 180
 181   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 182
 183   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 184   // has a zero usage count.
 185   // NOT NOW; CHANGED.
 186 //  backgroundBrush->RealizeResource();
 187   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 188 }
 189
 190 void wxButton::Command (wxCommandEvent & event)
 191 {
 192   ProcessCommand (event);
 193 }
 194
 195