memdc and bitmap fixes

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

/////////////////////////////////////////////////////////////////////////////
// Name:        radiobox.cpp
// Purpose:     wxRadioBox
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "radiobox.h"
#endif

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

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include <stdio.h>
#include "wx/setup.h"
#include "wx/radiobox.h"
#endif

#include "wx/msw/private.h"

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
#endif

bool wxRadioBox::MSWCommand(WXUINT param, WXWORD id)
{
  if (param == BN_CLICKED)
  {
#ifdef __WIN32__
    int i;
    for (i = 0; i < m_noItems; i++)
      if (id == GetWindowLong((HWND) m_radioButtons[i], GWL_ID))
        m_selectedButton = i;
#else
    int i;
    for (i = 0; i < m_noItems; i++)
      if (id == GetWindowWord((HWND) m_radioButtons[i], GWW_ID))
        m_selectedButton = i;
#endif

    wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, m_windowId);
    event.SetInt( m_selectedButton );
    event.SetEventObject( this );
    ProcessCommand(event);
    return TRUE;
  }
  else return FALSE;
}

#if WXWIN_COMPATIBILITY
wxRadioBox::wxRadioBox(wxWindow *parent, wxFunction func, const char *title,
             int x, int y, int width, int height,
             int n, char **choices,
             int majorDim, long style, const char *name)
{
    wxString *choices2 = new wxString[n];
    for ( int i = 0; i < n; i ++) choices2[i] = choices[i];
    Create(parent, -1, title, wxPoint(x, y), wxSize(width, height), n, choices2, majorDim, style,
        wxDefaultValidator, name);
    Callback(func);
    delete choices2;
}

#endif

// Radio box item
wxRadioBox::wxRadioBox(void)
{
  m_selectedButton = -1;
  m_noItems = 0;
  m_noRowsOrCols = 0;
  m_radioButtons = NULL;
  m_majorDim = 0 ;
  m_radioWidth = NULL ;
  m_radioHeight = NULL ;
}

bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
             const wxPoint& pos, const wxSize& size,
             int n, const wxString choices[],
             int majorDim, long style,
             const wxValidator& val, const wxString& name)
{
  m_selectedButton = -1;
  m_noItems = n;

  SetName(name);
  SetValidator(val);

  parent->AddChild(this);
  m_backgroundColour = parent->GetDefaultBackgroundColour() ;
  m_foregroundColour = parent->GetDefaultForegroundColour() ;

  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;

  m_noRowsOrCols = majorDim;
  if (majorDim==0)
    m_majorDim = n ;
  m_majorDim = majorDim ;

  long msStyle = GROUP_FLAGS;

  bool want3D;
  WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
  // Even with extended styles, need to combine with WS_BORDER
  // for them to look right.
  if (want3D && ((m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER) ||
       (m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER)))
    msStyle |= WS_BORDER;


  m_hWnd = (WXHWND) CreateWindowEx((DWORD) exStyle, GROUP_CLASS, (title == "" ? NULL : (const char *)title),
                           msStyle,
                           0,0,0,0,
                           (HWND) parent->GetHWND(), (HMENU) m_windowId, wxGetInstance(), NULL) ;

  HWND the_handle = (HWND) parent->GetHWND() ;

#if CTL3D
  if (want3D)
  {
    Ctl3dSubclassCtl((HWND) m_hWnd);
 	m_useCtl3D = TRUE;
  }
#endif

  SetFont(* parent->GetFont());

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

/* Label will be the same as button font now.
  if (labelFont)
  {
    labelFont->RealizeResource();
    if (labelFont->GetResourceHandle())
      SendMessage(ms_handle,WM_SETFONT,
                (WPARAM)labelFont->GetResourceHandle(),0L);
  }
*/

  // Some radio boxes test consecutive id.
  (void)NewControlId() ;
  m_radioButtons = new WXHWND[n];
  m_radioWidth = new int[n] ;
  m_radioHeight = new int[n] ;
  int i;
  for (i = 0; i < n; i++)
  {
    m_radioWidth[i] = m_radioHeight[i] = -1 ;
    long groupStyle = 0;
    if (i == 0 && style==0)
      groupStyle = WS_GROUP;
    long newId = NewControlId();
    long msStyle = groupStyle | RADIO_FLAGS;

    m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, choices[i],
                          msStyle,0,0,0,0,
                          the_handle, (HMENU)newId, wxGetInstance(), NULL);
#if CTL3D
  if (want3D)
  {
    Ctl3dSubclassCtl((HWND) m_hWnd);
 	m_useCtl3D = TRUE;
  }
#endif
    if (GetFont())
    {
       SendMessage((HWND)m_radioButtons[i],WM_SETFONT,
                    (WPARAM)GetFont()->GetResourceHandle(),0L);
    }
    m_subControls.Append((wxObject *)newId);
  }

  // Create a dummy radio control to end the group.
  (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);

  SetSelection(0);

  SetSize(x, y, width, height);

  return TRUE;
}

#if 0
bool wxRadioBox::Create(wxWindow *parent, wxWindowID id, const wxString& title,
             const wxPoint& pos, const wxSize& size,
             int n, const wxBitmap *choices[],
             int majorDim, long style,
             const wxValidator& val, const wxString& name)
{
  m_selectedButton = -1;
  m_noRowsOrCols = 0;
  m_noItems = n;

  SetName(name);
  SetValidator(val);

  parent->AddChild(this);
  m_backgroundColour = parent->GetDefaultBackgroundColour() ;
  m_foregroundColour = parent->GetDefaultForegroundColour() ;

  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;


  m_noRowsOrCols = majorDim;
  if (majorDim==0)
    m_majorDim = n ;
  m_majorDim = majorDim ;
  HWND the_handle ;

  long msStyle = GROUP_FLAGS;

  bool want3D;
  WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
  // Even with extended styles, need to combine with WS_BORDER
  // for them to look right.
  if (want3D && ((m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER) ||
       (m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER)))
    msStyle |= WS_BORDER;

  m_hWnd = (WXHWND) CreateWindowEx((DWORD) exStyle, GROUP_CLASS, (title == "" ? NULL : (const char *)title),
                           msStyle,
                           0,0,0,0,
                           (HWND) parent->GetHWND(), (HMENU) m_windowId, wxGetInstance(), NULL) ;

/*
  if (labelFont)
  {
    labelFont->RealizeResource();
    if (labelFont->GetResourceHandle())
      SendMessage(ms_handle,WM_SETFONT,
                (WPARAM)labelFont->GetResourceHandle(),0L);
  }
*/
  the_handle = (HWND) parent->GetHWND();

#if CTL3D
  if (want3D)
  {
    Ctl3dSubclassCtl((HWND) m_hWnd);
 	m_useCtl3D = TRUE;
  }
#endif

  SetFont(* parent->GetFont());

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

  (void)NewControlId() ;
  m_radioButtons = new WXHWND[n];
  m_radioWidth = new int[n] ;
  m_radioHeight = new int[n] ;

  int i;
  for (i = 0; i < n; i++)
  {
    long groupStyle = 0;
    if (i == 0 && style==0)
      groupStyle = WS_GROUP;
    long newId = NewControlId();
    m_radioWidth[i]  = ((wxBitmap *)choices[i])->GetWidth();
    m_radioHeight[i] = ((wxBitmap *)choices[i])->GetHeight();
    char tmp[32] ;
    sprintf(tmp,"Toggle%d",i) ;
    long msStyle = groupStyle | RADIO_FLAGS;
    m_radioButtons[i] = (WXHWND) CreateWindowEx(exStyle, RADIO_CLASS, tmp,
                          msStyle,0,0,0,0,
                          the_handle, (HMENU)newId, wxhInstance, NULL);
#if CTL3D
  if (want3D)
  {
    Ctl3dSubclassCtl((HWND) m_hWnd);
 	m_useCtl3D = TRUE;
  }
#endif
    m_subControls.Append((wxObject *)newId);
  }
  // Create a dummy radio control to end the group.
  (void)CreateWindowEx(0, RADIO_CLASS, "", WS_GROUP|RADIO_FLAGS, 0,0,0,0, the_handle, (HMENU)NewControlId(), wxGetInstance(), NULL);

  SetSelection(0);

  SetSize(x, y, width, height);

  return TRUE;
}
#endif

wxRadioBox::~wxRadioBox(void)
{
  m_isBeingDeleted = TRUE;
  
  if (m_radioButtons)
  {
    int i;
    for (i = 0; i < m_noItems; i++)
      DestroyWindow((HWND) m_radioButtons[i]);
    delete[] m_radioButtons;
  }
  if (m_radioWidth)
    delete[] m_radioWidth ;
  if (m_radioHeight)
    delete[] m_radioHeight ;
  if (m_hWnd)
    ::DestroyWindow((HWND) m_hWnd) ;
  m_hWnd = 0 ;

}

wxString wxRadioBox::GetLabel(int item) const
{
  GetWindowText((HWND)m_radioButtons[item], wxBuffer, 300);
  return wxString(wxBuffer);
}

void wxRadioBox::SetLabel(int item, const wxString& label)
{
  m_radioWidth[item] = m_radioHeight[item] = -1 ;
  SetWindowText((HWND)m_radioButtons[item], (const char *)label);
}

void wxRadioBox::SetLabel(int item, wxBitmap *bitmap)
{
/*
    m_radioWidth[item] = bitmap->GetWidth() + FB_MARGIN ;
    m_radioHeight[item] = bitmap->GetHeight() + FB_MARGIN ;
*/
}

int wxRadioBox::FindString(const wxString& s) const
{
 int i;
 for (i = 0; i < m_noItems; i++)
 {
  GetWindowText((HWND) m_radioButtons[i], wxBuffer, 1000);
  if (s == wxBuffer)
    return i;
 }
 return -1;
}

void wxRadioBox::SetSelection(int N)
{
  if ((N < 0) || (N >= m_noItems))
    return;

// Following necessary for Win32s, because Win32s translate BM_SETCHECK
  if (m_selectedButton >= 0 && m_selectedButton < m_noItems)
    SendMessage((HWND) m_radioButtons[m_selectedButton], BM_SETCHECK, 0, 0L);

  SendMessage((HWND) m_radioButtons[N], BM_SETCHECK, 1, 0L);
  m_selectedButton = N;
}

// Get single selection, for single choice list items
int wxRadioBox::GetSelection(void) const
{
  return m_selectedButton;
}

// Find string for position
wxString wxRadioBox::GetString(int N) const
{
  GetWindowText((HWND) m_radioButtons[N], wxBuffer, 1000);
  return wxString(wxBuffer);
}

void wxRadioBox::SetSize(int x, int y, int width, int height, int sizeFlags)
{
  int currentX, currentY;
  GetPosition(&currentX, &currentY);
  int xx = x;
  int yy = y;

  if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
    xx = currentX;
  if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
    yy = currentY;

  char buf[400];

  int y_offset = yy;
  int x_offset = xx;
  int current_width, cyf;

  int cx1,cy1 ;
  wxGetCharSize(m_hWnd, &cx1, &cy1, GetFont());
  // Attempt to have a look coherent with other platforms:
  // We compute the biggest toggle dim, then we align all
  // items according this value.
  int maxWidth =  -1;
  int maxHeight = -1 ;

  int i;
  for (i = 0 ; i < m_noItems; i++)
  {
    int eachWidth;
    int eachHeight ;
    if (m_radioWidth[i]<0)
    {
      // It's a labelled toggle
      GetWindowText((HWND) m_radioButtons[i], buf, 300);
      GetTextExtent(buf, &current_width, &cyf,NULL,NULL, GetFont());
      eachWidth = (int)(current_width + RADIO_SIZE);
      eachHeight = (int)((3*cyf)/2);
    }
    else
    {
      eachWidth = m_radioWidth[i] ;
      eachHeight = m_radioHeight[i] ;
    }
    if (maxWidth<eachWidth) maxWidth = eachWidth ;
    if (maxHeight<eachHeight) maxHeight = eachHeight ;
  }

  if (m_hWnd)
  {
    int totWidth ;
    int totHeight;

    int nbHor,nbVer;

    if (m_windowStyle & wxRA_VERTICAL)
    {
      nbVer = m_majorDim ;
      nbHor = (m_noItems+m_majorDim-1)/m_majorDim ;
    }
    else
    {
      nbHor = m_majorDim ;
      nbVer = (m_noItems+m_majorDim-1)/m_majorDim ;
    }

    // this formula works, but I don't know why.
    // Please, be sure what you do if you modify it!!
    if (m_radioWidth[0]<0)
      totHeight = (nbVer * maxHeight) + cy1/2 ;
    else
      totHeight = nbVer * (maxHeight+cy1/2) ;
    totWidth  = nbHor * (maxWidth+cx1) ;

#if (!CTL3D)
    // Requires a bigger group box in plain Windows
    MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+(3*cy1)/2,TRUE) ;
#else
    MoveWindow((HWND) m_hWnd,x_offset,y_offset,totWidth+cx1,totHeight+cy1,TRUE) ;
#endif
    x_offset += cx1;
    y_offset += cy1;
  }

#if (!CTL3D)
  y_offset += (int)(cy1/2); // Fudge factor since buttons overlapped label
                            // JACS 2/12/93. CTL3D draws group label quite high.
#endif
  int startX = x_offset ;
  int startY = y_offset ;

  for ( i = 0 ; i < m_noItems; i++)
  {
    // Bidimensional radio adjustment
    if (i&&((i%m_majorDim)==0)) // Why is this omitted for i = 0?
    {
      if (m_windowStyle & wxRA_VERTICAL)
      {
        y_offset = startY;
        x_offset += maxWidth + cx1 ;
      }
      else
      {
        x_offset = startX ;
        y_offset += maxHeight ;
        if (m_radioWidth[0]>0)
          y_offset += cy1/2 ;
      }
    }
    int eachWidth ;
    int eachHeight ;
    if (m_radioWidth[i]<0)
    {
      // It's a labeled item
      GetWindowText((HWND) m_radioButtons[i], buf, 300);
      GetTextExtent(buf, &current_width, &cyf,NULL,NULL,GetFont());

      // How do we find out radio button bitmap size!!
      // By adjusting them carefully, manually :-)
      eachWidth = (int)(current_width + RADIO_SIZE);
      eachHeight = (int)((3*cyf)/2);
    }
    else
    {
      eachWidth = m_radioWidth[i] ;
      eachHeight = m_radioHeight[i] ;
    }

    MoveWindow((HWND) m_radioButtons[i],x_offset,y_offset,eachWidth,eachHeight,TRUE);
    if (m_windowStyle & wxRA_VERTICAL)
    {
      y_offset += maxHeight;
      if (m_radioWidth[0]>0)
        y_offset += cy1/2 ;
    }
    else
      x_offset += maxWidth + cx1;
  }
}

void wxRadioBox::GetSize(int *width, int *height) const
{
  RECT rect;
  rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;

  if (m_hWnd)
    wxFindMaxSize(m_hWnd, &rect);

  int i;
  for (i = 0; i < m_noItems; i++)
    wxFindMaxSize(m_radioButtons[i], &rect);

  *width = rect.right - rect.left;
  *height = rect.bottom - rect.top;
}

void wxRadioBox::GetPosition(int *x, int *y) const
{
  wxWindow *parent = GetParent();
  RECT rect;
  rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;

  int i;
  for (i = 0; i < m_noItems; i++)
    wxFindMaxSize(m_radioButtons[i], &rect);

  if (m_hWnd)
    wxFindMaxSize(m_hWnd, &rect);

  // Since we now have the absolute screen coords,
  // if there's a parent we must subtract its top left corner
  POINT point;
  point.x = rect.left;
  point.y = rect.top;
  if (parent)
  {
    ::ScreenToClient((HWND) parent->GetHWND(), &point);
  }

  *x = point.x;
  *y = point.y;
}

wxString wxRadioBox::GetLabel(void) const
{
  if (m_hWnd)
  {
    GetWindowText((HWND) m_hWnd, wxBuffer, 300);
    return wxString(wxBuffer);
  }
  else return wxString("");
}

void wxRadioBox::SetLabel(const wxString& label)
{
  if (m_hWnd && label)
    SetWindowText((HWND) m_hWnd, label);
}

void wxRadioBox::SetFocus(void)
{
/*
  if (m_noItems > 0)
   ::SetFocus((HWND) m_radioButtons[0]);
*/
/* Begin Alberts Patch 26. 5. 1997*/
  if (m_noItems > 0)
  {
    if (m_selectedButton == -1)
      ::SetFocus((HWND) m_radioButtons[0]);
    else
      ::SetFocus((HWND) m_radioButtons[m_selectedButton]);
  }
/* Ende Alberts Patch*/

}

bool wxRadioBox::Show(bool show)
{
  int cshow;
  if (show)
    cshow = SW_SHOW;
  else
    cshow = SW_HIDE;
  if (m_hWnd)
    ShowWindow((HWND) m_hWnd, cshow);
  int i;
  for (i = 0; i < m_noItems; i++)
    ShowWindow((HWND) m_radioButtons[i], cshow);
  return TRUE;
}

// Enable a specific button
void wxRadioBox::Enable(int item, bool enable)
{
  if (item<0)
    wxWindow::Enable(enable) ;
  else if (item < m_noItems)
    ::EnableWindow((HWND) m_radioButtons[item], enable);
}

// Enable all controls
void wxRadioBox::Enable(bool enable)
{
  wxControl::Enable(enable);
  
  int i;
  for (i = 0; i < m_noItems; i++)
    ::EnableWindow((HWND) m_radioButtons[i], enable);
}

// Show a specific button
void wxRadioBox::Show(int item, bool show)
{
  if (item<0)
    wxRadioBox::Show(show) ;
  else if (item < m_noItems)
  {
    int cshow;
    if (show)
      cshow = SW_SHOW;
    else
      cshow = SW_HIDE;
    ShowWindow((HWND) m_radioButtons[item], cshow);
  }
}

WXHBRUSH wxRadioBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
			WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
{
#if CTL3D
  if ( m_useCtl3D )
  {
    HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
    return (WXHBRUSH) hbrush;
  }
#endif

  if (GetParent()->GetTransparentBackground())
    SetBkMode((HDC) pDC, TRANSPARENT);
  else
    SetBkMode((HDC) pDC, OPAQUE);

  ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
  ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));

  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);

  // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
  // has a zero usage count.
//  backgroundBrush->RealizeResource();
  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
}

// For single selection items only
wxString wxRadioBox::GetStringSelection (void) const
{
  int sel = GetSelection ();
  if (sel > -1)
    return this->GetString (sel);
  else
    return wxString("");
}

bool wxRadioBox::SetStringSelection (const wxString& s)
{
  int sel = FindString (s);
  if (sel > -1)
    {
      SetSelection (sel);
      return TRUE;
    }
  else
    return FALSE;
}

/*
void wxRadioBox::SetLabelFont(wxFont *font)
{
  // Decrement the usage count of the old label font
  // (we may be able to free it up)
  if (labelFont)
    labelFont->ReleaseResource();

  labelFont = font;

  // Increment usage count
  if (font)
    font->UseResource();

  HWND hWnd = GetHWND();
  if (hWnd != 0)
  {
    if (font)
    {
      font->RealizeResource();
      
      if (font->GetResourceHandle())
        SendMessage(hWnd, WM_SETFONT,
                  (WPARAM)font->GetResourceHandle(),TRUE);
    }
  }
}

*/

bool wxRadioBox::ContainsHWND(WXHWND hWnd) const
{
	int i;
    for (i = 0; i < Number(); i++)
       if (GetRadioButtons()[i] == hWnd)
          return TRUE;
	return FALSE;
}

void wxRadioBox::Command (wxCommandEvent & event)
{
  SetSelection (event.m_commandInt);
  ProcessCommand (event);
}