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 #include "wx/brush.h"
  26 #endif
  27
  28 #include "wx/msw/private.h"
  29
  30 #if !USE_SHARED_LIBRARY
  31 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  32 #endif
  33
  34 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
  35
  36 // Buttons
  37
  38 bool wxButton::MSWCommand(WXUINT param, WXWORD id)
  39 {
  40   if (param == BN_CLICKED || (param == 1)) // 1 for accelerator
  41   {
  42     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
  43     event.SetEventObject(this);
  44     ProcessCommand(event);
  45     return TRUE;
  46   }
  47   else return FALSE;
  48 }
  49
  50 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  51            const wxPoint& pos,
  52            const wxSize& size, long style,
  53            const wxValidator& validator,
  54            const wxString& name)
  55 {
  56   SetName(name);
  57   SetValidator(validator);
  58
  59   parent->AddChild((wxButton *)this);
  60   m_backgroundColour = parent->GetBackgroundColour() ;
  61   m_foregroundColour = parent->GetForegroundColour() ;
  62
  63   m_windowStyle = (long&)style;
  64
  65   int x = pos.x;
  66   int y = pos.y;
  67   int width = size.x;
  68   int height = size.y;
  69
  70   if (id == -1)
  71     m_windowId = NewControlId();
  72   else
  73     m_windowId = id;
  74
  75   DWORD exStyle = MakeExtendedStyle(m_windowStyle);
  76   HWND wx_button =
  77     CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD,
  78                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
  79                     wxGetInstance(), NULL);
  80
  81 #if CTL3D
  82 //  if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
  83 //    Ctl3dSubclassCtl(wx_button);
  84 #endif
  85
  86   m_hWnd = (WXHWND)wx_button;
  87
  88   // Subclass again for purposes of dialog editing mode
  89   SubclassWin((WXHWND)wx_button);
  90
  91   SetFont(parent->GetFont());
  92
  93   SetSize(x, y, width, height);
  94   ShowWindow(wx_button, SW_SHOW);
  95
  96   return TRUE;
  97 }
  98
  99 void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
 100 {
 101   int currentX, currentY;
 102   GetPosition(&currentX, &currentY);
 103   int x1 = x;
 104   int y1 = y;
 105   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 106     x1 = currentX;
 107   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 108     y1 = currentY;
 109
 110   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 111
 112   int actualWidth = width;
 113   int actualHeight = height;
 114   int ww, hh;
 115   GetSize(&ww, &hh);
 116
 117   int current_width;
 118   int cyf;
 119   char buf[300];
 120   GetWindowText((HWND) GetHWND(), buf, 300);
 121   GetTextExtent(buf, &current_width, &cyf,NULL,NULL,& GetFont());
 122
 123   // If we're prepared to use the existing width, then...
 124   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 125     actualWidth = ww;
 126   else if (width == -1)
 127   {
 128     int cx;
 129     int cy;
 130     wxGetCharSize(GetHWND(), &cx, &cy,& GetFont());
 131     actualWidth = (int)(current_width + 3*cx) ;
 132   }
 133
 134   // If we're prepared to use the existing height, then...
 135   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 136     actualHeight = hh;
 137   else if (height == -1)
 138   {
 139     actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
 140   }
 141
 142   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 143 }
 144
 145 void wxButton::SetDefault(void)
 146 {
 147   wxWindow *parent = (wxWindow *)GetParent();
 148   if (parent)
 149     parent->SetDefaultItem(this);
 150
 151   if (parent)
 152   {
 153     SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
 154   }
 155
 156   SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
 157 }
 158
 159 wxString wxButton::GetLabel(void) const
 160 {
 161     GetWindowText((HWND) GetHWND(), wxBuffer, 300);
 162     return wxString(wxBuffer);
 163 }
 164
 165 void wxButton::SetLabel(const wxString& label)
 166 {
 167   SetWindowText((HWND) GetHWND(), (const char *) label);
 168 }
 169
 170 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 171                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 172 {
 173 /*
 174     WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
 175 //    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
 176     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
 177         GetForegroundColour().Blue()));
 178
 179         return hBrush;
 180 */
 181   // This doesn't in fact seem to make any difference at all - buttons are always
 182   // the same colour.
 183   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 184   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 185
 186   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 187
 188   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 189   // has a zero usage count.
 190   // NOT NOW; CHANGED.
 191 //  backgroundBrush->RealizeResource();
 192   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 193 }
 194
 195 void wxButton::Command (wxCommandEvent & event)
 196 {
 197   ProcessCommand (event);
 198 }
 199
 200