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   m_hWnd = (WXHWND)wx_button;
  82
  83   // Subclass again for purposes of dialog editing mode
  84   SubclassWin((WXHWND)wx_button);
  85
  86   SetFont(parent->GetFont());
  87
  88   SetSize(x, y, width, height);
  89   ShowWindow(wx_button, SW_SHOW);
  90
  91   return TRUE;
  92 }
  93
  94 void wxButton::DoSetSize(int x, int y, int width, int height, int sizeFlags)
  95 {
  96   int currentX, currentY;
  97   GetPosition(&currentX, &currentY);
  98   int x1 = x;
  99   int y1 = y;
 100   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 101     x1 = currentX;
 102   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 103     y1 = currentY;
 104
 105   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 106
 107   int actualWidth = width;
 108   int actualHeight = height;
 109   int ww, hh;
 110   GetSize(&ww, &hh);
 111
 112   int current_width;
 113   int cyf;
 114   char buf[300];
 115   GetWindowText((HWND) GetHWND(), buf, 300);
 116   GetTextExtent(buf, &current_width, &cyf,NULL,NULL,
 117     & this->GetFont());
 118
 119   // If we're prepared to use the existing width, then...
 120   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 121     actualWidth = ww;
 122   else if (width == -1)
 123   {
 124     int cx;
 125     int cy;
 126     wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 127     actualWidth = (int)(current_width + 3*cx) ;
 128   }
 129
 130   // If we're prepared to use the existing height, then...
 131   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 132     actualHeight = hh;
 133   else if (height == -1)
 134   {
 135     actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
 136   }
 137
 138   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 139 }
 140
 141 void wxButton::SetDefault(void)
 142 {
 143   wxWindow *parent = (wxWindow *)GetParent();
 144   if (parent)
 145     parent->SetDefaultItem(this);
 146
 147   if (parent)
 148   {
 149     SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
 150   }
 151
 152   SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
 153 }
 154
 155 wxString wxButton::GetLabel(void) const
 156 {
 157     GetWindowText((HWND) GetHWND(), wxBuffer, 300);
 158     return wxString(wxBuffer);
 159 }
 160
 161 void wxButton::SetLabel(const wxString& label)
 162 {
 163   SetWindowText((HWND) GetHWND(), (const char *) label);
 164 }
 165
 166 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 167                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 168 {
 169 /*
 170     WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
 171 //    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
 172     ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
 173         GetForegroundColour().Blue()));
 174
 175         return hBrush;
 176 */
 177   // This doesn't in fact seem to make any difference at all - buttons are always
 178   // the same colour.
 179   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 180   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 181
 182   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 183
 184   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 185   // has a zero usage count.
 186   // NOT NOW; CHANGED.
 187 //  backgroundBrush->RealizeResource();
 188   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 189 }
 190
 191 void wxButton::Command (wxCommandEvent & event)
 192 {
 193   ProcessCommand (event);
 194 }
 195
 196