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_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
  34
  35 // Buttons
  36
  37 bool wxButton::MSWCommand(WXUINT param, WXWORD id)
  38 {
  39   if (param == BN_CLICKED || (param == 1)) // 1 for accelerator
  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->GetBackgroundColour() ;
  60   m_foregroundColour = parent->GetForegroundColour() ;
  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   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 110
 111   int actualWidth = width;
 112   int actualHeight = height;
 113   int ww, hh;
 114   GetSize(&ww, &hh);
 115
 116   int current_width;
 117   int cyf;
 118   char buf[300];
 119   GetWindowText((HWND) GetHWND(), buf, 300);
 120   GetTextExtent(buf, &current_width, &cyf,NULL,NULL,& GetFont());
 121
 122   // If we're prepared to use the existing width, then...
 123   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 124     actualWidth = ww;
 125   else if (width == -1)
 126   {
 127     int cx;
 128     int cy;
 129     wxGetCharSize(GetHWND(), &cx, &cy,& GetFont());
 130     actualWidth = (int)(current_width + 3*cx) ;
 131   }
 132
 133   // If we're prepared to use the existing height, then...
 134   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 135     actualHeight = hh;
 136   else if (height == -1)
 137   {
 138     actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
 139   }
 140
 141   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 142 }
 143
 144 void wxButton::SetDefault(void)
 145 {
 146   wxWindow *parent = (wxWindow *)GetParent();
 147   if (parent)
 148     parent->SetDefaultItem(this);
 149
 150   if (parent)
 151   {
 152     SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
 153   }
 154
 155   SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
 156 }
 157
 158 wxString wxButton::GetLabel(void) const
 159 {
 160     GetWindowText((HWND) GetHWND(), wxBuffer, 300);
 161     return wxString(wxBuffer);
 162 }
 163
 164 void wxButton::SetLabel(const wxString& label)
 165 {
 166   SetWindowText((HWND) GetHWND(), (const char *) label);
 167 }
 168
 169 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 170                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 171 {
 172 /*
 173     WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
 174 //    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
 175     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
 176         GetForegroundColour().Blue()));
 177
 178         return hBrush;
 179 */
 180   // This doesn't in fact seem to make any difference at all - buttons are always
 181   // the same colour.
 182   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 183   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 184
 185   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 186
 187   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 188   // has a zero usage count.
 189   // NOT NOW; CHANGED.
 190 //  backgroundBrush->RealizeResource();
 191   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 192 }
 193
 194 void wxButton::Command (wxCommandEvent & event)
 195 {
 196   ProcessCommand (event);
 197 }
 198
 199