Restored the ability to scroll.

[wxWidgets.git] / src / msw / button.cpp

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 6b88286368886a4c9e1f8c8f1c75a0c4ca0a96b1..9a8122e0791fd2e621c4ff9a5beb50366f24ec8e 100644 (file)
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -6,195 +6,240 @@
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart and Markus Holzem
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart and Markus Holzem

-// Licence:    wxWindows license
+// Licence:     wxWindows license

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------

 #ifdef __GNUG__
 #ifdef __GNUG__

-#pragma implementation "button.h"
+    #pragma implementation "button.h"

 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-#include "wx/button.h"
-#include "wx/brush.h"
+    #include "wx/button.h"
+    #include "wx/brush.h"
+    #include "wx/panel.h"
+    #include "wx/bmpbuttn.h"
+    #include "wx/settings.h"
+    #include "wx/dcscreen.h"

 #endif
 
 #include "wx/msw/private.h"
 
 #endif
 
 #include "wx/msw/private.h"
 

+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+

 #if !USE_SHARED_LIBRARY
 #if !USE_SHARED_LIBRARY

-IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+    IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)

 #endif
 
 #endif
 

+// this macro tries to adjust the default button height to a reasonable value
+// using the char height as the base

 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
 
 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
 

-// Buttons
-
-bool wxButton::MSWCommand(WXUINT param, WXWORD id)
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// creation/destruction
+// ----------------------------------------------------------------------------
+
+bool wxButton::Create(wxWindow *parent,
+                      wxWindowID id,
+                      const wxString& label,
+                      const wxPoint& pos,
+                      const wxSize& size,
+                      long style,
+                      const wxValidator& validator,
+                      const wxString& name)

 {
 {

-  if (param == BN_CLICKED || (param == 1)) // 1 for accelerator
-  {
-    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
-    event.SetEventObject(this);
-    ProcessCommand(event);
-    return TRUE;
-  }
-  else return FALSE;
-}
+    if ( !CreateBase(parent, id, pos, size, style, validator, name) )
+        return FALSE;

 
 

-bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
-           const wxPoint& pos,
-           const wxSize& size, long style,
-           const wxValidator& validator,
-           const wxString& name)
-{
-  SetName(name);
-  SetValidator(validator);
-
-  parent->AddChild((wxButton *)this);
-  m_backgroundColour = parent->GetBackgroundColour() ;
-  m_foregroundColour = parent->GetForegroundColour() ;
-
-  m_windowStyle = (long&)style;
-
-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
-
-  if (id == -1)
-    m_windowId = NewControlId();
-  else
-    m_windowId = id;
-
-  DWORD exStyle = MakeExtendedStyle(m_windowStyle);
-  HWND wx_button =
-    CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD,
-                    0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
-                    wxGetInstance(), NULL);
-
-#if CTL3D
-//  if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
-//    Ctl3dSubclassCtl(wx_button);
-#endif
+    SetValidator(validator);
+
+    parent->AddChild((wxButton *)this);
+
+    m_backgroundColour = parent->GetBackgroundColour() ;
+    m_foregroundColour = parent->GetForegroundColour() ;

 
 

-  m_hWnd = (WXHWND)wx_button;
+    m_hWnd = (WXHWND)CreateWindowEx
+                     (
+                      MakeExtendedStyle(m_windowStyle),
+                      _T("BUTTON"),
+                      label,
+                      WS_VISIBLE | WS_TABSTOP | WS_CHILD,
+                      0, 0, 0, 0, 
+                      GetWinHwnd(parent),
+                      (HMENU)m_windowId,
+                      wxGetInstance(),
+                      NULL
+                     );

 
 

-  // Subclass again for purposes of dialog editing mode
-  SubclassWin((WXHWND)wx_button);
+    // Subclass again for purposes of dialog editing mode
+    SubclassWin(m_hWnd);

 
 

-  SetFont(parent->GetFont());
+    SetFont(parent->GetFont());

 
 

-  SetSize(x, y, width, height);
-  ShowWindow(wx_button, SW_SHOW);
+    SetSize(pos.x, pos.y, size.x, size.y);

 
 

-  return TRUE;
+    return TRUE;

 }
 
 }
 

-void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
+wxButton::~wxButton()

 {
 {

-  int currentX, currentY;
-  GetPosition(&currentX, &currentY);
-  int x1 = x;
-  int y1 = y;
-  if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    x1 = currentX;
-  if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    y1 = currentY;
-
-  AdjustForParentClientOrigin(x1, y1, sizeFlags);
-
-  int actualWidth = width;
-  int actualHeight = height;
-  int ww, hh;
-  GetSize(&ww, &hh);
-
-  int current_width;
-  int cyf;
-  char buf[300];
-  GetWindowText((HWND) GetHWND(), buf, 300);
-  GetTextExtent(buf, &current_width, &cyf,NULL,NULL,& GetFont());
-
-  // If we're prepared to use the existing width, then...
-  if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
-    actualWidth = ww;
-  else if (width == -1)
-  {
-    int cx;
-    int cy;
-    wxGetCharSize(GetHWND(), &cx, &cy,& GetFont());
-    actualWidth = (int)(current_width + 3*cx) ;
-  }
-  
-  // If we're prepared to use the existing height, then...
-  if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
-    actualHeight = hh;
-  else if (height == -1)
-  {
-    actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
-  }
-
-  MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
+    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+    if ( panel )
+    {
+        if ( panel->GetDefaultItem() == this )
+        {
+            // don't leave the panel with invalid default item
+            panel->SetDefaultItem(NULL);
+        }
+    }

 }
 
 }
 

-void wxButton::SetDefault(void)
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize()

 {
 {

-  wxWindow *parent = (wxWindow *)GetParent();
-  if (parent)
-    parent->SetDefaultItem(this);
+    wxString label = wxGetWindowText(GetHWND());
+    int wBtn;
+    GetTextExtent(label, &wBtn, NULL);
+
+    int wChar, hChar;
+    wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
+
+    // add a margin - the button is wider than just its label
+    wBtn += 3*wChar;

 
 

-  if (parent)
-  {
-    SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
-  }
+    // the button height is proportional to the height of the font used
+    int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);

 
 

-  SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
+    return wxSize(wBtn, hBtn);

 }
 
 }
 

-wxString wxButton::GetLabel(void) const
+/* static */
+wxSize wxButton::GetDefaultSize()

 {
 {

-    GetWindowText((HWND) GetHWND(), wxBuffer, 300);
-    return wxString(wxBuffer);
+    static wxSize s_sizeBtn;
+
+    if ( s_sizeBtn.x == 0 )
+    {
+        wxScreenDC dc;
+        dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+        // the size of a standard button in the dialog units is 50x14,
+        // translate this to pixels
+        // NB1: the multipliers come from the Windows convention
+        // NB2: the extra +1/+2 were needed to get the size be the same as the
+        //      size of the buttons in the standard dialog - I don't know how
+        //      this happens, but on my system this size is 75x23 in pixels and
+        //      23*8 isn't even divisible by 14... Would be nice to understand
+        //      why these constants are needed though!
+        s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+        s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+    }
+
+    return s_sizeBtn;

 }
 
 }
 

-void wxButton::SetLabel(const wxString& label)
+// ----------------------------------------------------------------------------
+// set this button as the default one in its panel
+// ----------------------------------------------------------------------------
+
+void wxButton::SetDefault()

 {
 {

-  SetWindowText((HWND) GetHWND(), (const char *) label);
+    wxWindow *parent = GetParent();
+    wxButton *btnOldDefault = NULL;
+    wxPanel *panel = wxDynamicCast(parent, wxPanel);
+    if ( panel )
+    {
+        btnOldDefault = panel->GetDefaultItem();
+        panel->SetDefaultItem(this);
+    }
+
+    if ( parent )
+    {
+        SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
+    }
+
+    // this doesn't work with bitmap buttons because it also removes the
+    // "ownerdrawn" style...
+    if ( btnOldDefault && !wxDynamicCast(btnOldDefault, wxBitmapButton) )
+    {
+        // remove the BS_DEFPUSHBUTTON style from the other button
+        long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
+        style &= ~BS_DEFPUSHBUTTON;
+        SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+    }
+
+    // set this button as the default
+    long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+    style |= BS_DEFPUSHBUTTON;
+    SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);

 }
 
 }
 

-WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
-                       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()

 {
 {

-/*
-    WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
-//    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
-    ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
-        GetForegroundColour().Blue()));
-
-       return hBrush;
-*/
-  // This doesn't in fact seem to make any difference at all - buttons are always
-  // the same colour.
-  ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
-  ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
+    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+    event.SetEventObject(this);

 
 

-  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+    return ProcessCommand(event);
+}

 
 

-  // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
-  // has a zero usage count.
-  // NOT NOW; CHANGED.
-//  backgroundBrush->RealizeResource();
-  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+void wxButton::Command(wxCommandEvent & event)
+{
+    ProcessCommand(event);

 }
 
 }
 

-void wxButton::Command (wxCommandEvent & event)
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
+
+bool wxButton::MSWCommand(WXUINT param, WXWORD id)

 {
 {

-  ProcessCommand (event);
+    bool processed = FALSE;
+    switch ( param )
+    {
+        case 1:                                             // 1 for accelerator
+        case BN_CLICKED:
+            processed = SendClickEvent();
+            break;
+    }
+
+    return processed;

 }
 
 }
 

+WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
+                              WXHWND pWnd,
+                              WXUINT nCtlColor,
+                              WXUINT message,
+                              WXWPARAM wParam,
+                              WXLPARAM lParam)
+{
+  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+
+  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+}