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wxWidgets/src/msw/spinctrl.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/msw/spinctrl.cpp
// Purpose: wxSpinCtrl class implementation for Win32
// Author: Vadim Zeitlin
// Modified by:
// Created: 22.07.99
// RCS-ID: $Id$
// Copyright: (c) 1999-2005 Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_SPINCTRL
#include "wx/spinctrl.h"
#ifndef WX_PRECOMP
#include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
#include "wx/event.h"
#include "wx/textctrl.h"
#endif
#include "wx/msw/private.h"
#if wxUSE_TOOLTIPS
#include "wx/tooltip.h"
#endif // wxUSE_TOOLTIPS
#include <limits.h> // for INT_MIN
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxSpinCtrlStyle )
wxBEGIN_FLAGS( wxSpinCtrlStyle )
// new style border flags, we put them first to
// use them for streaming out
wxFLAGS_MEMBER(wxBORDER_SIMPLE)
wxFLAGS_MEMBER(wxBORDER_SUNKEN)
wxFLAGS_MEMBER(wxBORDER_DOUBLE)
wxFLAGS_MEMBER(wxBORDER_RAISED)
wxFLAGS_MEMBER(wxBORDER_STATIC)
wxFLAGS_MEMBER(wxBORDER_NONE)
// old style border flags
wxFLAGS_MEMBER(wxSIMPLE_BORDER)
wxFLAGS_MEMBER(wxSUNKEN_BORDER)
wxFLAGS_MEMBER(wxDOUBLE_BORDER)
wxFLAGS_MEMBER(wxRAISED_BORDER)
wxFLAGS_MEMBER(wxSTATIC_BORDER)
wxFLAGS_MEMBER(wxBORDER)
// standard window styles
wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
wxFLAGS_MEMBER(wxCLIP_CHILDREN)
wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
wxFLAGS_MEMBER(wxWANTS_CHARS)
wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
wxFLAGS_MEMBER(wxVSCROLL)
wxFLAGS_MEMBER(wxHSCROLL)
wxFLAGS_MEMBER(wxSP_HORIZONTAL)
wxFLAGS_MEMBER(wxSP_VERTICAL)
wxFLAGS_MEMBER(wxSP_ARROW_KEYS)
wxFLAGS_MEMBER(wxSP_WRAP)
wxEND_FLAGS( wxSpinCtrlStyle )
IMPLEMENT_DYNAMIC_CLASS_XTI(wxSpinCtrl, wxControl,"wx/spinbut.h")
wxBEGIN_PROPERTIES_TABLE(wxSpinCtrl)
wxEVENT_RANGE_PROPERTY( Spin , wxEVT_SCROLL_TOP , wxEVT_SCROLL_CHANGED , wxSpinEvent )
wxEVENT_PROPERTY( Updated , wxEVT_COMMAND_SPINCTRL_UPDATED , wxCommandEvent )
wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
wxPROPERTY( ValueString , wxString , SetValue , GetValue , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) ;
wxPROPERTY( Value , int , SetValue, GetValue, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY( Min , int , SetMin, GetMin, 0, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
wxPROPERTY( Max , int , SetMax, GetMax, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY_FLAGS( WindowStyle , wxSpinCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
/*
TODO PROPERTIES
style wxSP_ARROW_KEYS
*/
wxEND_PROPERTIES_TABLE()
wxBEGIN_HANDLERS_TABLE(wxSpinCtrl)
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_6( wxSpinCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , ValueString , wxPoint , Position , wxSize , Size , long , WindowStyle )
#else
IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
#endif
BEGIN_EVENT_TABLE(wxSpinCtrl, wxSpinButton)
EVT_CHAR(wxSpinCtrl::OnChar)
EVT_SET_FOCUS(wxSpinCtrl::OnSetFocus)
EVT_KILL_FOCUS(wxSpinCtrl::OnKillFocus)
EVT_SPIN(wxID_ANY, wxSpinCtrl::OnSpinChange)
END_EVENT_TABLE()
#define GetBuddyHwnd() (HWND)(m_hwndBuddy)
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// the margin between the up-down control and its buddy (can be arbitrary,
// choose what you like - or may be decide during run-time depending on the
// font size?)
static const int MARGIN_BETWEEN = 1;
// ============================================================================
// implementation
// ============================================================================
wxArraySpins wxSpinCtrl::ms_allSpins;
// ----------------------------------------------------------------------------
// wnd proc for the buddy text ctrl
// ----------------------------------------------------------------------------
LRESULT APIENTRY _EXPORT wxBuddyTextWndProc(HWND hwnd,
UINT message,
WPARAM wParam,
LPARAM lParam)
{
wxSpinCtrl *spin = (wxSpinCtrl *)wxGetWindowUserData(hwnd);
// forward some messages (the key and focus ones only so far) to
// the spin ctrl
switch ( message )
{
case WM_SETFOCUS:
// if the focus comes from the spin control itself, don't set it
// back to it -- we don't want to go into an infinite loop
if ( (WXHWND)wParam == spin->GetHWND() )
break;
//else: fall through
case WM_KILLFOCUS:
case WM_CHAR:
case WM_DEADCHAR:
case WM_KEYUP:
case WM_KEYDOWN:
spin->MSWWindowProc(message, wParam, lParam);
// The control may have been deleted at this point, so check.
if ( !::IsWindow(hwnd) || wxGetWindowUserData(hwnd) != spin )
return 0;
break;
case WM_GETDLGCODE:
// we want to get WXK_RETURN in order to generate the event for it
return DLGC_WANTCHARS;
}
return ::CallWindowProc(CASTWNDPROC spin->GetBuddyWndProc(),
hwnd, message, wParam, lParam);
}
/* static */
wxSpinCtrl *wxSpinCtrl::GetSpinForTextCtrl(WXHWND hwndBuddy)
{
wxSpinCtrl *spin = (wxSpinCtrl *)wxGetWindowUserData((HWND)hwndBuddy);
int i = ms_allSpins.Index(spin);
if ( i == wxNOT_FOUND )
return NULL;
// sanity check
wxASSERT_MSG( spin->m_hwndBuddy == hwndBuddy,
_T("wxSpinCtrl has incorrect buddy HWND!") );
return spin;
}
// process a WM_COMMAND generated by the buddy text control
bool wxSpinCtrl::ProcessTextCommand(WXWORD cmd, WXWORD WXUNUSED(id))
{
if ( cmd == EN_CHANGE )
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
event.SetEventObject(this);
wxString val = wxGetWindowText(m_hwndBuddy);
event.SetString(val);
event.SetInt(GetValue());
return GetEventHandler()->ProcessEvent(event);
}
// not processed
return false;
}
void wxSpinCtrl::OnChar(wxKeyEvent& event)
{
switch ( event.GetKeyCode() )
{
case WXK_RETURN:
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
InitCommandEvent(event);
wxString val = wxGetWindowText(m_hwndBuddy);
event.SetString(val);
event.SetInt(GetValue());
if ( GetEventHandler()->ProcessEvent(event) )
return;
break;
}
case WXK_TAB:
// always produce navigation event - even if we process TAB
// ourselves the fact that we got here means that the user code
// decided to skip processing of this TAB - probably to let it
// do its default job.
{
wxNavigationKeyEvent eventNav;
eventNav.SetDirection(!event.ShiftDown());
eventNav.SetWindowChange(event.ControlDown());
eventNav.SetEventObject(this);
if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
return;
}
break;
}
// no, we didn't process it
event.Skip();
}
void wxSpinCtrl::OnKillFocus(wxFocusEvent& event)
{
// ensure that a correct value is shown by the control
NormalizeValue();
event.Skip();
}
void wxSpinCtrl::OnSetFocus(wxFocusEvent& event)
{
// when we get focus, give it to our buddy window as it needs it more than
// we do
::SetFocus((HWND)m_hwndBuddy);
event.Skip();
}
void wxSpinCtrl::NormalizeValue()
{
const int value = GetValue();
const bool changed = value != m_oldValue;
// notice that we have to call SetValue() even if the value didn't change
// because otherwise we could be left with empty buddy control when value
// is 0, see comment in SetValue()
SetValue(value);
if ( changed )
{
SendSpinUpdate(value);
}
}
// ----------------------------------------------------------------------------
// construction
// ----------------------------------------------------------------------------
bool wxSpinCtrl::Create(wxWindow *parent,
wxWindowID id,
const wxString& value,
const wxPoint& pos,
const wxSize& size,
long style,
int min, int max, int initial,
const wxString& name)
{
// this should be in ctor/init function but I don't want to add one to 2.8
// to avoid problems with default ctor which can be inlined in the user
// code and so might not get this fix without recompilation
m_oldValue = INT_MIN;
// before using DoGetBestSize(), have to set style to let the base class
// know whether this is a horizontal or vertical control (we're always
// vertical)
style |= wxSP_VERTICAL;
if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
#ifdef __WXWINCE__
style |= wxBORDER_SIMPLE;
#else
style |= wxBORDER_SUNKEN;
#endif
SetWindowStyle(style);
WXDWORD exStyle = 0;
WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), & exStyle) ;
// calculate the sizes: the size given is the toal size for both controls
// and we need to fit them both in the given width (height is the same)
wxSize sizeText(size), sizeBtn(size);
sizeBtn.x = wxSpinButton::DoGetBestSize().x;
if ( sizeText.x <= 0 )
{
// DEFAULT_ITEM_WIDTH is the default width for the text control
sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
}
sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
if ( sizeText.x <= 0 )
{
wxLogDebug(_T("not enough space for wxSpinCtrl!"));
}
wxPoint posBtn(pos);
posBtn.x += sizeText.x + MARGIN_BETWEEN;
// we must create the text control before the spin button for the purpose
// of the dialog navigation: if there is a static text just before the spin
// control, activating it by Alt-letter should give focus to the text
// control, not the spin and the dialog navigation code will give focus to
// the next control (at Windows level), not the one after it
// create the text window
m_hwndBuddy = (WXHWND)::CreateWindowEx
(
exStyle, // sunken border
_T("EDIT"), // window class
NULL, // no window title
msStyle, // style (will be shown later)
pos.x, pos.y, // position
0, 0, // size (will be set later)
GetHwndOf(parent), // parent
(HMENU)-1, // control id
wxGetInstance(), // app instance
NULL // unused client data
);
if ( !m_hwndBuddy )
{
wxLogLastError(wxT("CreateWindow(buddy text window)"));
return false;
}
// create the spin button
if ( !wxSpinButton::Create(parent, id, posBtn, sizeBtn, style, name) )
{
return false;
}
wxSpinButtonBase::SetRange(min, max);
// subclass the text ctrl to be able to intercept some events
wxSetWindowUserData(GetBuddyHwnd(), this);
m_wndProcBuddy = (WXFARPROC)wxSetWindowProc(GetBuddyHwnd(),
wxBuddyTextWndProc);
// set up fonts and colours (This is nomally done in MSWCreateControl)
InheritAttributes();
if (!m_hasFont)
SetFont(GetDefaultAttributes().font);
// set the size of the text window - can do it only now, because we
// couldn't call DoGetBestSize() before as font wasn't set
if ( sizeText.y <= 0 )
{
int cx, cy;
wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
sizeText.y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
}
SetInitialSize(size);
(void)::ShowWindow(GetBuddyHwnd(), SW_SHOW);
// associate the text window with the spin button
(void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
SetValue(initial);
// Set the range in the native control
SetRange(min, max);
if ( !value.empty() )
{
SetValue(value);
m_oldValue = (int) wxAtol(value);
}
else
{
SetValue(wxString::Format(wxT("%d"), initial));
m_oldValue = initial;
}
// do it after finishing with m_hwndBuddy creation to avoid generating
// initial wxEVT_COMMAND_TEXT_UPDATED message
ms_allSpins.Add(this);
return true;
}
wxSpinCtrl::~wxSpinCtrl()
{
ms_allSpins.Remove(this);
// This removes spurious memory leak reporting
if (ms_allSpins.GetCount() == 0)
ms_allSpins.Clear();
// destroy the buddy window because this pointer which wxBuddyTextWndProc
// uses will not soon be valid any more
::DestroyWindow(GetBuddyHwnd());
}
// ----------------------------------------------------------------------------
// wxTextCtrl-like methods
// ----------------------------------------------------------------------------
void wxSpinCtrl::SetValue(const wxString& text)
{
if ( !::SetWindowText(GetBuddyHwnd(), text.c_str()) )
{
wxLogLastError(wxT("SetWindowText(buddy)"));
}
}
void wxSpinCtrl::SetValue(int val)
{
wxSpinButton::SetValue(val);
// normally setting the value of the spin button is enough as it updates
// its buddy control automatically ...
if ( wxGetWindowText(m_hwndBuddy).empty() )
{
// ... but sometimes it doesn't, notably when the value is 0 and the
// text control is currently empty, the spin button seems to be happy
// to leave it like this, while we really want to always show the
// current value in the control, so do it manually
::SetWindowText(GetBuddyHwnd(), wxString::Format(_T("%d"), val));
}
m_oldValue = GetValue();
}
int wxSpinCtrl::GetValue() const
{
wxString val = wxGetWindowText(m_hwndBuddy);
long n;
if ( (wxSscanf(val, wxT("%ld"), &n) != 1) )
n = INT_MIN;
if ( n < m_min )
n = m_min;
if ( n > m_max )
n = m_max;
return n;
}
void wxSpinCtrl::SetSelection(long from, long to)
{
// if from and to are both -1, it means (in wxWidgets) that all text should
// be selected - translate into Windows convention
if ( (from == -1) && (to == -1) )
{
from = 0;
}
::SendMessage(GetBuddyHwnd(), EM_SETSEL, (WPARAM)from, (LPARAM)to);
}
// ----------------------------------------------------------------------------
// forward some methods to subcontrols
// ----------------------------------------------------------------------------
bool wxSpinCtrl::SetFont(const wxFont& font)
{
if ( !wxWindowBase::SetFont(font) )
{
// nothing to do
return false;
}
WXHANDLE hFont = GetFont().GetResourceHandle();
(void)::SendMessage(GetBuddyHwnd(), WM_SETFONT, (WPARAM)hFont, TRUE);
return true;
}
bool wxSpinCtrl::Show(bool show)
{
if ( !wxControl::Show(show) )
{
return false;
}
::ShowWindow(GetBuddyHwnd(), show ? SW_SHOW : SW_HIDE);
return true;
}
bool wxSpinCtrl::Enable(bool enable)
{
if ( !wxControl::Enable(enable) )
{
return false;
}
::EnableWindow(GetBuddyHwnd(), enable);
return true;
}
void wxSpinCtrl::SetFocus()
{
::SetFocus(GetBuddyHwnd());
}
#if wxUSE_TOOLTIPS
void wxSpinCtrl::DoSetToolTip(wxToolTip *tip)
{
wxSpinButton::DoSetToolTip(tip);
if ( tip )
tip->Add(m_hwndBuddy);
}
#endif // wxUSE_TOOLTIPS
// ----------------------------------------------------------------------------
// events processing and generation
// ----------------------------------------------------------------------------
void wxSpinCtrl::SendSpinUpdate(int value)
{
wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, GetId());
event.SetEventObject(this);
event.SetInt(value);
(void)GetEventHandler()->ProcessEvent(event);
m_oldValue = value;
}
void wxSpinCtrl::OnSpinChange(wxSpinEvent& eventSpin)
{
const int value = eventSpin.GetPosition();
if ( value != m_oldValue )
{
SendSpinUpdate(value);
}
}
// ----------------------------------------------------------------------------
// size calculations
// ----------------------------------------------------------------------------
wxSize wxSpinCtrl::DoGetBestSize() const
{
wxSize sizeBtn = wxSpinButton::DoGetBestSize();
sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
int y;
wxGetCharSize(GetHWND(), NULL, &y, GetFont());
y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
// JACS: we should always use the height calculated
// from above, because otherwise we'll get a spin control
// that's too big. So never use the height calculated
// from wxSpinButton::DoGetBestSize().
// if ( sizeBtn.y < y )
{
// make the text tall enough
sizeBtn.y = y;
}
return sizeBtn;
}
void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
{
int widthBtn = wxSpinButton::DoGetBestSize().x;
int widthText = width - widthBtn - MARGIN_BETWEEN;
if ( widthText <= 0 )
{
wxLogDebug(_T("not enough space for wxSpinCtrl!"));
}
// 1) The buddy window
DoMoveSibling(m_hwndBuddy, x, y, widthText, height);
// 2) The button window
x += widthText + MARGIN_BETWEEN;
wxSpinButton::DoMoveWindow(x, y, widthBtn, height);
}
// get total size of the control
void wxSpinCtrl::DoGetSize(int *x, int *y) const
{
RECT spinrect, textrect, ctrlrect;
GetWindowRect(GetHwnd(), &spinrect);
GetWindowRect(GetBuddyHwnd(), &textrect);
UnionRect(&ctrlrect,&textrect, &spinrect);
if ( x )
*x = ctrlrect.right - ctrlrect.left;
if ( y )
*y = ctrlrect.bottom - ctrlrect.top;
}
void wxSpinCtrl::DoGetPosition(int *x, int *y) const
{
// hack: pretend that our HWND is the text control just for a moment
WXHWND hWnd = GetHWND();
wxConstCast(this, wxSpinCtrl)->m_hWnd = m_hwndBuddy;
wxSpinButton::DoGetPosition(x, y);
wxConstCast(this, wxSpinCtrl)->m_hWnd = hWnd;
}
#endif // wxUSE_SPINCTRL
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