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wxWidgets/src/os2/button.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: button.cpp
// Purpose: wxButton
// Author: David Webster
// Modified by:
// Created: 10/13/99
// RCS-ID: $Id$
// Copyright: (c) David Webster
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
#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/os2/private.h"
#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
//
// Should be at the very least less than winDEFAULT_BUTTON_MARGIN
//
#define FOCUS_MARGIN 3
#ifndef BST_CHECKED
#define BST_CHECKED 0x0001
#endif
IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
// Button
bool wxButton::Create(
wxWindow* pParent
, wxWindowID vId
, const wxString& rsLabel
, const wxPoint& rPos
, const wxSize& rSize
, long lStyle
#if wxUSE_VALIDATORS
, const wxValidator& rValidator
#endif
, const wxString& rsName
)
{
SetName(rsName);
#if wxUSE_VALIDATORS
SetValidator(rValidator);
#endif
m_windowStyle = lStyle;
pParent->AddChild((wxButton *)this);
if (vId == -1)
m_windowId = NewControlId();
else
m_windowId = vId;
lStyle = WS_VISIBLE | WS_TABSTOP | BS_PUSHBUTTON;
//
// OS/2 PM does not have Right/Left/Top/Bottom styles.
// We will have to define an additional style when we implement notebooks
// for a notebook page button
//
if (m_windowStyle & wxCLIP_SIBLINGS )
lStyle |= WS_CLIPSIBLINGS;
m_hWnd = (WXHWND)::WinCreateWindow( GetHwndOf(pParent) // Parent handle
,WC_BUTTON // A Button class window
,(PSZ)rsLabel.c_str() // Button text
,lStyle // Button style
,0, 0, 0, 0 // Location and size
,GetHwndOf(pParent) // Owner handle
,HWND_TOP // Top of Z-Order
,vId // Identifier
,NULL // No control data
,NULL // No Presentation parameters
);
if (m_hWnd == 0)
{
return FALSE;
}
//
// Subclass again for purposes of dialog editing mode
//
SubclassWin(m_hWnd);
SetFont(pParent->GetFont());
SetSize( rPos.x
,rPos.y
,rSize.x
,rSize.y
);
return TRUE;
} // end of wxButton::Create
wxButton::~wxButton()
{
wxPanel* pPanel = wxDynamicCast(GetParent(), wxPanel);
if (pPanel)
{
if (pPanel->GetDefaultItem() == this)
{
//
// Don't leave the panel with invalid default item
//
pPanel->SetDefaultItem(NULL);
}
}
} // end of wxButton::~wxButton
// ----------------------------------------------------------------------------
// size management including autosizing
// ----------------------------------------------------------------------------
wxSize wxButton::DoGetBestSize() const
{
wxString rsLabel = wxGetWindowText(GetHWND());
int nWidthButton;
int nWidthChar;
int nHeightChar;
GetTextExtent( rsLabel
,&nWidthButton
,NULL
);
wxGetCharSize( GetHWND()
,&nWidthChar
,&nHeightChar
,(wxFont*)&GetFont()
);
//
// Add a margin - the button is wider than just its label
//
nWidthButton += 3 * nWidthChar;
//
// The button height is proportional to the height of the font used
//
int nHeightButton = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(nHeightChar);
//
// Need a little extra to make it look right
//
nHeightButton += nHeightChar/1.5;
wxSize vSize = GetDefaultSize();
if (nWidthButton > vSize.x)
vSize.x = nWidthButton;
if (nHeightButton > vSize.y)
vSize.y = nHeightButton;
return vSize;
} // end of wxButton::DoGetBestSize
/* static */
wxSize wxButton::GetDefaultSize()
{
static wxSize vSizeBtn;
if (vSizeBtn.x == 0)
{
wxScreenDC vDc;
vDc.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!
vSizeBtn.x = (50 * (vDc.GetCharWidth() + 1))/4;
vSizeBtn.y = ((14 * vDc.GetCharHeight()) + 2)/8;
}
return vSizeBtn;
} // end of wxButton::GetDefaultSize
void wxButton::Command (
wxCommandEvent& rEvent
)
{
ProcessCommand (rEvent);
} // end of wxButton::Command
// ----------------------------------------------------------------------------
// helpers
// ----------------------------------------------------------------------------
bool wxButton::SendClickEvent()
{
wxCommandEvent vEvent( wxEVT_COMMAND_BUTTON_CLICKED
,GetId()
);
vEvent.SetEventObject(this);
return ProcessCommand(vEvent);
} // end of wxButton::SendClickEvent
void wxButton::SetDefault()
{
wxWindow* pParent = GetParent();
wxButton* pBtnOldDefault = NULL;
wxPanel* pPanel = wxDynamicCast(pParent, wxPanel);
long lStyle = 0L;
if (pParent)
{
wxWindow* pWinOldDefault = pParent->SetDefaultItem(this);
pBtnOldDefault = wxDynamicCast(pWinOldDefault, wxButton);
}
if (pBtnOldDefault && pBtnOldDefault != this)
{
//
// Remove the BS_DEFPUSHBUTTON style from the other button
//
lStyle = ::WinQueryWindowULong(GetHwndOf(pBtnOldDefault), QWL_STYLE);
//
// Don't do it with the owner drawn buttons because it will reset
// BS_OWNERDRAW style bit too (BS_OWNERDRAW & BS_DEFPUSHBUTTON != 0)!
//
if ((lStyle & BS_USERBUTTON) != BS_USERBUTTON)
{
lStyle &= ~BS_DEFAULT;
::WinSetWindowULong(GetHwndOf(pBtnOldDefault), QWL_STYLE, lStyle);
}
else
{
//
// Redraw the button - it will notice itself that it's not the
// default one any longer
//
pBtnOldDefault->Refresh();
}
}
//
// Set this button as the default
//
lStyle = ::WinQueryWindowULong(GetHwnd(), QWL_STYLE);
if ((lStyle & BS_USERBUTTON) != BS_USERBUTTON)
{
lStyle != BS_DEFAULT;
::WinSetWindowULong(GetHwnd(), QWL_STYLE, lStyle);
}
} // end of wxButton::SetDefault
// ----------------------------------------------------------------------------
// event/message handlers
// ----------------------------------------------------------------------------
bool wxButton::OS2Command(
WXUINT uParam
, WXWORD wId
)
{
bool bProcessed = FALSE;
switch (uParam)
{
case BN_CLICKED: // normal buttons send this
case BN_DBLCLICKED: // owner-drawn ones also send this
bProcessed = SendClickEvent();
break;
}
return bProcessed;
} // end of wxButton::OS2Command
WXHBRUSH wxButton::OnCtlColor(
WXHDC pDC
, WXHWND pWnd
, WXUINT nCtlColor
, WXUINT uMessage
, WXWPARAM wParam
, WXLPARAM lParam
)
{
wxBrush* pBackgroundBrush = wxTheBrushList->FindOrCreateBrush( GetBackgroundColour()
,wxSOLID
);
return (WXHBRUSH)pBackgroundBrush->GetResourceHandle();
} // end of wxButton::OnCtlColor
void wxButton::MakeOwnerDrawn()
{
long lStyle = 0L;
lStyle = ::WinQueryWindowULong(GetHwnd(), QWL_STYLE);
if ((lStyle & BS_USERBUTTON) != BS_USERBUTTON)
{
//
// Make it so
//
lStyle |= BS_USERBUTTON;
::WinSetWindowULong(GetHwnd(), QWL_STYLE, lStyle);
}
} // end of wxCButton::MakeOwnerDrawn
MRESULT wxButton::WindowProc(
WXUINT uMsg
, WXWPARAM wParam
, WXLPARAM lParam
)
{
//
// When we receive focus, we want to become the default button in our
// parent panel
//
if (uMsg == WM_SETFOCUS)
{
SetDefault();
//
// Let the default processign take place too
//
}
else if (uMsg == WM_BUTTON1DBLCLK)
{
//
// Emulate a click event to force an owner-drawn button to change its
// appearance - without this, it won't do it
//
(void)wxControl::OS2WindowProc( WM_BUTTON1DOWN
,wParam
,lParam
);
//
// And conitnue with processing the message normally as well
//
}
//
// Let the base class do all real processing
//
return (wxControl::OS2WindowProc( uMsg
,wParam
,lParam
));
} // end of wxW indowProc
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