Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
f3c067d2dcd99a45448e8e9cde3a23dd1f3b51e9
wxWidgets/src/common/wincmn.cpp
Vadim Zeitlin db89aa764f fix for Centre() (thanks Derry!) 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9044 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2001-01-04 02:30:08 +00:00

1542 lines
43 KiB
C++
Raw Blame History

/////////////////////////////////////////////////////////////////////////////
// Name: common/window.cpp
// Purpose: common (to all ports) wxWindow functions
// Author: Julian Smart, Vadim Zeitlin
// Modified by:
// Created: 13/07/98
// RCS-ID: $Id$
// Copyright: (c) wxWindows team
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "windowbase.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/string.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/frame.h"
#include "wx/defs.h"
#include "wx/window.h"
#include "wx/checkbox.h"
#include "wx/radiobut.h"
#include "wx/textctrl.h"
#include "wx/settings.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/statusbr.h"
#endif //WX_PRECOMP
#if wxUSE_CONSTRAINTS
#include "wx/layout.h"
#include "wx/sizer.h"
#endif // wxUSE_CONSTRAINTS
#if wxUSE_DRAG_AND_DROP
#include "wx/dnd.h"
#endif // wxUSE_DRAG_AND_DROP
#if wxUSE_HELP
#include "wx/cshelp.h"
#endif // wxUSE_HELP
#if wxUSE_TOOLTIPS
#include "wx/tooltip.h"
#endif // wxUSE_TOOLTIPS
#if wxUSE_CARET
#include "wx/caret.h"
#endif // wxUSE_CARET
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
int wxWindowBase::ms_lastControlId = -200;
IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
// ----------------------------------------------------------------------------
// event table
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
#if wxUSE_HELP
EVT_HELP(-1, wxWindowBase::OnHelp)
#endif // wxUSE_HELP
END_EVENT_TABLE()
// ============================================================================
// implementation of the common functionality of the wxWindow class
// ============================================================================
// ----------------------------------------------------------------------------
// initialization
// ----------------------------------------------------------------------------
// the default initialization
void wxWindowBase::InitBase()
{
// no window yet, no parent nor children
m_parent = (wxWindow *)NULL;
m_windowId = -1;
m_children.DeleteContents( FALSE ); // don't auto delete node data
// no constraints on the minimal window size
m_minWidth =
m_minHeight =
m_maxWidth =
m_maxHeight = -1;
// window is created enabled but it's not visible yet
m_isShown = FALSE;
m_isEnabled = TRUE;
// no client data (yet)
m_clientData = NULL;
m_clientDataType = ClientData_None;
// the default event handler is just this window
m_eventHandler = this;
#if wxUSE_VALIDATORS
// no validator
m_windowValidator = (wxValidator *) NULL;
#endif // wxUSE_VALIDATORS
// use the system default colours
wxSystemSettings settings;
m_backgroundColour = settings.GetSystemColour(wxSYS_COLOUR_BTNFACE);
// m_foregroundColour = *wxBLACK; // TODO take this from sys settings too?
m_foregroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT);
// GRG, changed Mar/2000
m_font = settings.GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
// no style bits
m_exStyle =
m_windowStyle = 0;
// an optimization for the event processing: checking this flag is much
// faster than using IsKindOf(CLASSINFO(wxWindow))
m_isWindow = TRUE;
#if wxUSE_CONSTRAINTS
// no constraints whatsoever
m_constraints = (wxLayoutConstraints *) NULL;
m_constraintsInvolvedIn = (wxWindowList *) NULL;
m_windowSizer = (wxSizer *) NULL;
m_autoLayout = FALSE;
#endif // wxUSE_CONSTRAINTS
#if wxUSE_DRAG_AND_DROP
m_dropTarget = (wxDropTarget *)NULL;
#endif // wxUSE_DRAG_AND_DROP
#if wxUSE_TOOLTIPS
m_tooltip = (wxToolTip *)NULL;
#endif // wxUSE_TOOLTIPS
#if wxUSE_CARET
m_caret = (wxCaret *)NULL;
#endif // wxUSE_CARET
// Whether we're using the current theme for this window (wxGTK only for now)
m_themeEnabled = FALSE;
}
// common part of window creation process
bool wxWindowBase::CreateBase(wxWindowBase *parent,
wxWindowID id,
const wxPoint& WXUNUSED(pos),
const wxSize& WXUNUSED(size),
long style,
const wxValidator& validator,
const wxString& name)
{
// m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
// member variables - check that it has been called (will catch the case
// when a new ctor is added which doesn't call InitWindow)
wxASSERT_MSG( m_isWindow, wxT("Init() must have been called before!") );
// generate a new id if the user doesn't care about it
m_windowId = id == -1 ? NewControlId() : id;
SetName(name);
SetWindowStyleFlag(style);
SetParent(parent);
#if wxUSE_VALIDATORS
SetValidator(validator);
#endif // wxUSE_VALIDATORS
// if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
// have it too - like this it's possible to set it only in the top level
// dialog/frame and all children will inherit it by defult
if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
{
SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
}
return TRUE;
}
// ----------------------------------------------------------------------------
// destruction
// ----------------------------------------------------------------------------
// common clean up
wxWindowBase::~wxWindowBase()
{
// FIXME if these 2 cases result from programming errors in the user code
// we should probably assert here instead of silently fixing them
// Just in case the window has been Closed, but we're then deleting
// immediately: don't leave dangling pointers.
wxPendingDelete.DeleteObject(this);
// Just in case we've loaded a top-level window via LoadNativeDialog but
// we weren't a dialog class
wxTopLevelWindows.DeleteObject(this);
wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
// make sure that there are no dangling pointers left pointing to us
wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
if ( panel )
{
if ( panel->GetLastFocus() == this )
{
panel->SetLastFocus((wxWindow *)NULL);
}
}
#if wxUSE_CARET
if ( m_caret )
delete m_caret;
#endif // wxUSE_CARET
#if wxUSE_VALIDATORS
if ( m_windowValidator )
delete m_windowValidator;
#endif // wxUSE_VALIDATORS
// we only delete object data, not untyped
if ( m_clientDataType == ClientData_Object )
delete m_clientObject;
#if wxUSE_CONSTRAINTS
// Have to delete constraints/sizer FIRST otherwise sizers may try to look
// at deleted windows as they delete themselves.
DeleteRelatedConstraints();
if ( m_constraints )
{
// This removes any dangling pointers to this window in other windows'
// constraintsInvolvedIn lists.
UnsetConstraints(m_constraints);
delete m_constraints;
m_constraints = NULL;
}
if ( m_windowSizer )
delete m_windowSizer;
#endif // wxUSE_CONSTRAINTS
#if wxUSE_DRAG_AND_DROP
if ( m_dropTarget )
delete m_dropTarget;
#endif // wxUSE_DRAG_AND_DROP
#if wxUSE_TOOLTIPS
if ( m_tooltip )
delete m_tooltip;
#endif // wxUSE_TOOLTIPS
}
bool wxWindowBase::Destroy()
{
delete this;
return TRUE;
}
bool wxWindowBase::Close(bool force)
{
wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
event.SetEventObject(this);
#if WXWIN_COMPATIBILITY
event.SetForce(force);
#endif // WXWIN_COMPATIBILITY
event.SetCanVeto(!force);
// return FALSE if window wasn't closed because the application vetoed the
// close event
return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
}
bool wxWindowBase::DestroyChildren()
{
wxWindowList::Node *node;
for ( ;; )
{
// we iterate until the list becomes empty
node = GetChildren().GetFirst();
if ( !node )
break;
wxWindow *child = node->GetData();
wxASSERT_MSG( child, wxT("children list contains empty nodes") );
delete child;
wxASSERT_MSG( !GetChildren().Find(child),
wxT("child didn't remove itself using RemoveChild()") );
}
return TRUE;
}
// ----------------------------------------------------------------------------
// size/position related methods
// ----------------------------------------------------------------------------
// centre the window with respect to its parent in either (or both) directions
void wxWindowBase::Centre(int direction)
{
// the position/size of the parent window or of the entire screen
wxPoint posParent;
int widthParent, heightParent;
wxWindow *parent = NULL;
if ( !(direction & wxCENTRE_ON_SCREEN) )
{
// find the parent to centre this window on: it should be the
// immediate parent for the controls but the top level parent for the
// top level windows (like dialogs)
parent = GetParent();
if ( IsTopLevel() )
{
while ( parent && !parent->IsTopLevel() )
{
parent = parent->GetParent();
}
}
// did we find the parent?
if ( !parent )
{
// no other choice
direction |= wxCENTRE_ON_SCREEN;
}
}
if ( direction & wxCENTRE_ON_SCREEN )
{
// centre with respect to the whole screen
wxDisplaySize(&widthParent, &heightParent);
}
else
{
if ( IsTopLevel() )
{
// centre on the parent
parent->GetSize(&widthParent, &heightParent);
// adjust to the parents position
posParent = parent->GetPosition();
}
else
{
// centre inside the parents client rectangle
parent->GetClientSize(&widthParent, &heightParent);
}
}
int width, height;
GetSize(&width, &height);
int xNew = -1,
yNew = -1;
if ( direction & wxHORIZONTAL )
xNew = (widthParent - width)/2;
if ( direction & wxVERTICAL )
yNew = (heightParent - height)/2;
xNew += posParent.x;
yNew += posParent.y;
// move the window to this position (keeping the old size but using
// SetSize() and not Move() to allow xNew and/or yNew to be -1)
SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
}
// fits the window around the children
void wxWindowBase::Fit()
{
if ( GetChildren().GetCount() > 0 )
{
wxSize size = DoGetBestSize();
// for compatibility with the old versions and because it really looks
// slightly more pretty like this, add a pad
size.x += 7;
size.y += 14;
SetClientSize(size);
}
//else: do nothing if we have no children
}
// return the size best suited for the current window
wxSize wxWindowBase::DoGetBestSize() const
{
if ( GetChildren().GetCount() > 0 )
{
// our minimal acceptable size is such that all our windows fit inside
int maxX = 0,
maxY = 0;
for ( wxWindowList::Node *node = GetChildren().GetFirst();
node;
node = node->GetNext() )
{
wxWindow *win = node->GetData();
if ( win->IsTopLevel() || wxDynamicCast(win, wxStatusBar) || !win->IsShown())
{
// dialogs and frames lie in different top level windows -
// don't deal with them here; as for the status bars, they
// don't lie in the client area at all
continue;
}
int wx, wy, ww, wh;
win->GetPosition(&wx, &wy);
// if the window hadn't been positioned yet, assume that it is in
// the origin
if ( wx == -1 )
wx = 0;
if ( wy == -1 )
wy = 0;
win->GetSize(&ww, &wh);
if ( wx + ww > maxX )
maxX = wx + ww;
if ( wy + wh > maxY )
maxY = wy + wh;
}
return wxSize(maxX, maxY);
}
else
{
// for a generic window there is no natural best size - just use the
// current one
return GetSize();
}
}
// set the min/max size of the window
void wxWindowBase::SetSizeHints(int minW, int minH,
int maxW, int maxH,
int WXUNUSED(incW), int WXUNUSED(incH))
{
m_minWidth = minW;
m_maxWidth = maxW;
m_minHeight = minH;
m_maxHeight = maxH;
}
// ----------------------------------------------------------------------------
// show/hide/enable/disable the window
// ----------------------------------------------------------------------------
bool wxWindowBase::Show(bool show)
{
if ( show != m_isShown )
{
m_isShown = show;
return TRUE;
}
else
{
return FALSE;
}
}
bool wxWindowBase::Enable(bool enable)
{
if ( enable != m_isEnabled )
{
m_isEnabled = enable;
return TRUE;
}
else
{
return FALSE;
}
}
// ----------------------------------------------------------------------------
// RTTI
// ----------------------------------------------------------------------------
bool wxWindowBase::IsTopLevel() const
{
return FALSE;
}
// ----------------------------------------------------------------------------
// reparenting the window
// ----------------------------------------------------------------------------
void wxWindowBase::AddChild(wxWindowBase *child)
{
wxCHECK_RET( child, wxT("can't add a NULL child") );
// this should never happen and it will lead to a crash later if it does
// because RemoveChild() will remove only one node from the children list
// and the other(s) one(s) will be left with dangling pointers in them
wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
GetChildren().Append(child);
child->SetParent(this);
}
void wxWindowBase::RemoveChild(wxWindowBase *child)
{
wxCHECK_RET( child, wxT("can't remove a NULL child") );
GetChildren().DeleteObject(child);
child->SetParent((wxWindow *)NULL);
}
bool wxWindowBase::Reparent(wxWindowBase *newParent)
{
wxWindow *oldParent = GetParent();
if ( newParent == oldParent )
{
// nothing done
return FALSE;
}
// unlink this window from the existing parent.
if ( oldParent )
{
oldParent->RemoveChild(this);
}
else
{
wxTopLevelWindows.DeleteObject(this);
}
// add it to the new one
if ( newParent )
{
newParent->AddChild(this);
}
else
{
wxTopLevelWindows.Append(this);
}
return TRUE;
}
// ----------------------------------------------------------------------------
// event handler stuff
// ----------------------------------------------------------------------------
void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
{
handler->SetNextHandler(GetEventHandler());
SetEventHandler(handler);
}
wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
{
wxEvtHandler *handlerA = GetEventHandler();
if ( handlerA )
{
wxEvtHandler *handlerB = handlerA->GetNextHandler();
handlerA->SetNextHandler((wxEvtHandler *)NULL);
SetEventHandler(handlerB);
if ( deleteHandler )
{
delete handlerA;
handlerA = (wxEvtHandler *)NULL;
}
}
return handlerA;
}
// ----------------------------------------------------------------------------
// cursors, fonts &c
// ----------------------------------------------------------------------------
bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
{
if ( !colour.Ok() || (colour == m_backgroundColour) )
return FALSE;
m_backgroundColour = colour;
return TRUE;
}
bool wxWindowBase::SetForegroundColour( const wxColour &colour )
{
if ( !colour.Ok() || (colour == m_foregroundColour) )
return FALSE;
m_foregroundColour = colour;
return TRUE;
}
bool wxWindowBase::SetCursor(const wxCursor& cursor)
{
// setting an invalid cursor is ok, it means that we don't have any special
// cursor
if ( m_cursor == cursor )
{
// no change
return FALSE;
}
m_cursor = cursor;
return TRUE;
}
bool wxWindowBase::SetFont(const wxFont& font)
{
// don't try to set invalid font, always fall back to the default
const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
if ( (wxFont&)fontOk == m_font )
{
// no change
return FALSE;
}
m_font = fontOk;
return TRUE;
}
#if wxUSE_CARET
void wxWindowBase::SetCaret(wxCaret *caret)
{
if ( m_caret )
{
delete m_caret;
}
m_caret = caret;
if ( m_caret )
{
wxASSERT_MSG( m_caret->GetWindow() == this,
wxT("caret should be created associated to this window") );
}
}
#endif // wxUSE_CARET
#if wxUSE_VALIDATORS
// ----------------------------------------------------------------------------
// validators
// ----------------------------------------------------------------------------
void wxWindowBase::SetValidator(const wxValidator& validator)
{
if ( m_windowValidator )
delete m_windowValidator;
m_windowValidator = (wxValidator *)validator.Clone();
if ( m_windowValidator )
m_windowValidator->SetWindow(this) ;
}
#endif // wxUSE_VALIDATORS
// ----------------------------------------------------------------------------
// update region testing
// ----------------------------------------------------------------------------
bool wxWindowBase::IsExposed(int x, int y) const
{
return m_updateRegion.Contains(x, y) != wxOutRegion;
}
bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
{
return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
}
// ----------------------------------------------------------------------------
// find window by id or name
// ----------------------------------------------------------------------------
wxWindow *wxWindowBase::FindWindow( long id )
{
if ( id == m_windowId )
return (wxWindow *)this;
wxWindowBase *res = (wxWindow *)NULL;
wxWindowList::Node *node;
for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
{
wxWindowBase *child = node->GetData();
res = child->FindWindow( id );
}
return (wxWindow *)res;
}
wxWindow *wxWindowBase::FindWindow( const wxString& name )
{
if ( name == m_windowName )
return (wxWindow *)this;
wxWindowBase *res = (wxWindow *)NULL;
wxWindowList::Node *node;
for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
{
wxWindow *child = node->GetData();
res = child->FindWindow(name);
}
return (wxWindow *)res;
}
// ----------------------------------------------------------------------------
// dialog oriented functions
// ----------------------------------------------------------------------------
void wxWindowBase::MakeModal(bool modal)
{
// Disable all other windows
if ( IsTopLevel() )
{
wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
while (node)
{
wxWindow *win = node->GetData();
if (win != this)
win->Enable(!modal);
node = node->GetNext();
}
}
}
bool wxWindowBase::Validate()
{
#if wxUSE_VALIDATORS
bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
wxWindowList::Node *node;
for ( node = m_children.GetFirst(); node; node = node->GetNext() )
{
wxWindowBase *child = node->GetData();
wxValidator *validator = child->GetValidator();
if ( validator && !validator->Validate((wxWindow *)this) )
{
return FALSE;
}
if ( recurse && !child->Validate() )
{
return FALSE;
}
}
#endif // wxUSE_VALIDATORS
return TRUE;
}
bool wxWindowBase::TransferDataToWindow()
{
#if wxUSE_VALIDATORS
bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
wxWindowList::Node *node;
for ( node = m_children.GetFirst(); node; node = node->GetNext() )
{
wxWindowBase *child = node->GetData();
wxValidator *validator = child->GetValidator();
if ( validator && !validator->TransferToWindow() )
{
wxLogWarning(_("Could not transfer data to window"));
wxLog::FlushActive();
return FALSE;
}
if ( recurse )
{
if ( !child->TransferDataToWindow() )
{
// warning already given
return FALSE;
}
}
}
#endif // wxUSE_VALIDATORS
return TRUE;
}
bool wxWindowBase::TransferDataFromWindow()
{
#if wxUSE_VALIDATORS
bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
wxWindowList::Node *node;
for ( node = m_children.GetFirst(); node; node = node->GetNext() )
{
wxWindow *child = node->GetData();
wxValidator *validator = child->GetValidator();
if ( validator && !validator->TransferFromWindow() )
{
// nop warning here because the application is supposed to give
// one itself - we don't know here what might have gone wrongly
return FALSE;
}
if ( recurse )
{
if ( !child->TransferDataFromWindow() )
{
// warning already given
return FALSE;
}
}
}
#endif // wxUSE_VALIDATORS
return TRUE;
}
void wxWindowBase::InitDialog()
{
wxInitDialogEvent event(GetId());
event.SetEventObject( this );
GetEventHandler()->ProcessEvent(event);
}
// ----------------------------------------------------------------------------
// context-sensitive help support
// ----------------------------------------------------------------------------
#if wxUSE_HELP
// associate this help text with this window
void wxWindowBase::SetHelpText(const wxString& text)
{
wxHelpProvider *helpProvider = wxHelpProvider::Get();
if ( helpProvider )
{
helpProvider->AddHelp(this, text);
}
}
// associate this help text with all windows with the same id as this
// one
void wxWindowBase::SetHelpTextForId(const wxString& text)
{
wxHelpProvider *helpProvider = wxHelpProvider::Get();
if ( helpProvider )
{
helpProvider->AddHelp(GetId(), text);
}
}
// get the help string associated with this window (may be empty)
wxString wxWindowBase::GetHelpText() const
{
wxString text;
wxHelpProvider *helpProvider = wxHelpProvider::Get();
if ( helpProvider )
{
text = helpProvider->GetHelp(this);
}
return text;
}
// show help for this window
void wxWindowBase::OnHelp(wxHelpEvent& event)
{
wxHelpProvider *helpProvider = wxHelpProvider::Get();
if ( helpProvider )
{
if ( helpProvider->ShowHelp(this) )
{
// skip the event.Skip() below
return;
}
}
event.Skip();
}
#endif // wxUSE_HELP
// ----------------------------------------------------------------------------
// tooltips
// ----------------------------------------------------------------------------
#if wxUSE_TOOLTIPS
void wxWindowBase::SetToolTip( const wxString &tip )
{
// don't create the new tooltip if we already have one
if ( m_tooltip )
{
m_tooltip->SetTip( tip );
}
else
{
SetToolTip( new wxToolTip( tip ) );
}
// setting empty tooltip text does not remove the tooltip any more - use
// SetToolTip((wxToolTip *)NULL) for this
}
void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
{
if ( m_tooltip )
delete m_tooltip;
m_tooltip = tooltip;
}
#endif // wxUSE_TOOLTIPS
// ----------------------------------------------------------------------------
// constraints and sizers
// ----------------------------------------------------------------------------
#if wxUSE_CONSTRAINTS
void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
{
if ( m_constraints )
{
UnsetConstraints(m_constraints);
delete m_constraints;
}
m_constraints = constraints;
if ( m_constraints )
{
// Make sure other windows know they're part of a 'meaningful relationship'
if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
}
}
// This removes any dangling pointers to this window in other windows'
// constraintsInvolvedIn lists.
void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
{
if ( c )
{
if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
c->left.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
c->top.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
c->right.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
c->width.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
c->height.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
}
}
// Back-pointer to other windows we're involved with, so if we delete this
// window, we must delete any constraints we're involved with.
void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
{
if ( !m_constraintsInvolvedIn )
m_constraintsInvolvedIn = new wxWindowList;
if ( !m_constraintsInvolvedIn->Find(otherWin) )
m_constraintsInvolvedIn->Append(otherWin);
}
// REMOVE back-pointer to other windows we're involved with.
void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
{
if ( m_constraintsInvolvedIn )
m_constraintsInvolvedIn->DeleteObject(otherWin);
}
// Reset any constraints that mention this window
void wxWindowBase::DeleteRelatedConstraints()
{
if ( m_constraintsInvolvedIn )
{
wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
while (node)
{
wxWindow *win = node->GetData();
wxLayoutConstraints *constr = win->GetConstraints();
// Reset any constraints involving this window
if ( constr )
{
constr->left.ResetIfWin(this);
constr->top.ResetIfWin(this);
constr->right.ResetIfWin(this);
constr->bottom.ResetIfWin(this);
constr->width.ResetIfWin(this);
constr->height.ResetIfWin(this);
constr->centreX.ResetIfWin(this);
constr->centreY.ResetIfWin(this);
}
wxWindowList::Node *next = node->GetNext();
delete node;
node = next;
}
delete m_constraintsInvolvedIn;
m_constraintsInvolvedIn = (wxWindowList *) NULL;
}
}
void wxWindowBase::SetSizer(wxSizer *sizer)
{
if (m_windowSizer) delete m_windowSizer;
m_windowSizer = sizer;
}
bool wxWindowBase::Layout()
{
// If there is a sizer, use it instead of the constraints
if ( GetSizer() )
{
int w, h;
GetClientSize(&w, &h);
GetSizer()->SetDimension( 0, 0, w, h );
}
else
{
wxLayoutConstraints *constr = GetConstraints();
bool wasOk = constr && constr->AreSatisfied();
ResetConstraints(); // Mark all constraints as unevaluated
// if we're a top level panel (i.e. our parent is frame/dialog), our
// own constraints will never be satisfied any more unless we do it
// here
if ( wasOk )
{
int noChanges = 1;
while ( noChanges > 0 )
{
constr->SatisfyConstraints(this, &noChanges);
}
}
DoPhase(1); // Layout children
DoPhase(2); // Layout grand children
SetConstraintSizes(); // Recursively set the real window sizes
}
return TRUE;
}
// Do a phase of evaluating constraints: the default behaviour. wxSizers may
// do a similar thing, but also impose their own 'constraints' and order the
// evaluation differently.
bool wxWindowBase::LayoutPhase1(int *noChanges)
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
return constr->SatisfyConstraints(this, noChanges);
}
else
return TRUE;
}
bool wxWindowBase::LayoutPhase2(int *noChanges)
{
*noChanges = 0;
// Layout children
DoPhase(1);
DoPhase(2);
return TRUE;
}
// Do a phase of evaluating child constraints
bool wxWindowBase::DoPhase(int phase)
{
int noIterations = 0;
int maxIterations = 500;
int noChanges = 1;
int noFailures = 0;
wxWindowList succeeded;
while ((noChanges > 0) && (noIterations < maxIterations))
{
noChanges = 0;
noFailures = 0;
wxWindowList::Node *node = GetChildren().GetFirst();
while (node)
{
wxWindow *child = node->GetData();
if ( !child->IsTopLevel() )
{
wxLayoutConstraints *constr = child->GetConstraints();
if ( constr )
{
if ( !succeeded.Find(child) )
{
int tempNoChanges = 0;
bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
noChanges += tempNoChanges;
if ( success )
{
succeeded.Append(child);
}
}
}
}
node = node->GetNext();
}
noIterations++;
}
return TRUE;
}
void wxWindowBase::ResetConstraints()
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
constr->left.SetDone(FALSE);
constr->top.SetDone(FALSE);
constr->right.SetDone(FALSE);
constr->bottom.SetDone(FALSE);
constr->width.SetDone(FALSE);
constr->height.SetDone(FALSE);
constr->centreX.SetDone(FALSE);
constr->centreY.SetDone(FALSE);
}
wxWindowList::Node *node = GetChildren().GetFirst();
while (node)
{
wxWindow *win = node->GetData();
if ( !win->IsTopLevel() )
win->ResetConstraints();
node = node->GetNext();
}
}
// Need to distinguish between setting the 'fake' size for windows and sizers,
// and setting the real values.
void wxWindowBase::SetConstraintSizes(bool recurse)
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr && constr->AreSatisfied() )
{
int x = constr->left.GetValue();
int y = constr->top.GetValue();
int w = constr->width.GetValue();
int h = constr->height.GetValue();
if ( (constr->width.GetRelationship() != wxAsIs ) ||
(constr->height.GetRelationship() != wxAsIs) )
{
SetSize(x, y, w, h);
}
else
{
// If we don't want to resize this window, just move it...
Move(x, y);
}
}
else if ( constr )
{
wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
GetClassInfo()->GetClassName(),
GetName().c_str());
}
if ( recurse )
{
wxWindowList::Node *node = GetChildren().GetFirst();
while (node)
{
wxWindow *win = node->GetData();
if ( !win->IsTopLevel() )
win->SetConstraintSizes();
node = node->GetNext();
}
}
}
// Only set the size/position of the constraint (if any)
void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
if ( x != -1 )
{
constr->left.SetValue(x);
constr->left.SetDone(TRUE);
}
if ( y != -1 )
{
constr->top.SetValue(y);
constr->top.SetDone(TRUE);
}
if ( w != -1 )
{
constr->width.SetValue(w);
constr->width.SetDone(TRUE);
}
if ( h != -1 )
{
constr->height.SetValue(h);
constr->height.SetDone(TRUE);
}
}
}
void wxWindowBase::MoveConstraint(int x, int y)
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
if ( x != -1 )
{
constr->left.SetValue(x);
constr->left.SetDone(TRUE);
}
if ( y != -1 )
{
constr->top.SetValue(y);
constr->top.SetDone(TRUE);
}
}
}
void wxWindowBase::GetSizeConstraint(int *w, int *h) const
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
*w = constr->width.GetValue();
*h = constr->height.GetValue();
}
else
GetSize(w, h);
}
void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
*w = constr->width.GetValue();
*h = constr->height.GetValue();
}
else
GetClientSize(w, h);
}
void wxWindowBase::GetPositionConstraint(int *x, int *y) const
{
wxLayoutConstraints *constr = GetConstraints();
if ( constr )
{
*x = constr->left.GetValue();
*y = constr->top.GetValue();
}
else
GetPosition(x, y);
}
#endif // wxUSE_CONSTRAINTS
// ----------------------------------------------------------------------------
// do Update UI processing for child controls
// ----------------------------------------------------------------------------
// TODO: should this be implemented for the child window rather
// than the parent? Then you can override it e.g. for wxCheckBox
// to do the Right Thing rather than having to assume a fixed number
// of control classes.
void wxWindowBase::UpdateWindowUI()
{
wxUpdateUIEvent event(GetId());
event.m_eventObject = this;
if ( GetEventHandler()->ProcessEvent(event) )
{
if ( event.GetSetEnabled() )
Enable(event.GetEnabled());
if ( event.GetSetText() )
{
wxControl *control = wxDynamicCast(this, wxControl);
if ( control )
{
wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
if ( text )
text->SetValue(event.GetText());
else
control->SetLabel(event.GetText());
}
}
#if wxUSE_CHECKBOX
wxCheckBox *checkbox = wxDynamicCast(this, wxCheckBox);
if ( checkbox )
{
if ( event.GetSetChecked() )
checkbox->SetValue(event.GetChecked());
}
#endif // wxUSE_CHECKBOX
#if wxUSE_RADIOBTN
wxRadioButton *radiobtn = wxDynamicCast(this, wxRadioButton);
if ( radiobtn )
{
if ( event.GetSetChecked() )
radiobtn->SetValue(event.GetChecked());
}
#endif // wxUSE_RADIOBTN
}
}
// ----------------------------------------------------------------------------
// dialog units translations
// ----------------------------------------------------------------------------
wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
{
int charWidth = GetCharWidth();
int charHeight = GetCharHeight();
wxPoint pt2(-1, -1);
if (pt.x != -1)
pt2.x = (int) ((pt.x * 4) / charWidth) ;
if (pt.y != -1)
pt2.y = (int) ((pt.y * 8) / charHeight) ;
return pt2;
}
wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
{
int charWidth = GetCharWidth();
int charHeight = GetCharHeight();
wxPoint pt2(-1, -1);
if (pt.x != -1)
pt2.x = (int) ((pt.x * charWidth) / 4) ;
if (pt.y != -1)
pt2.y = (int) ((pt.y * charHeight) / 8) ;
return pt2;
}
// ----------------------------------------------------------------------------
// client data
// ----------------------------------------------------------------------------
void wxWindowBase::DoSetClientObject( wxClientData *data )
{
wxASSERT_MSG( m_clientDataType != ClientData_Void,
wxT("can't have both object and void client data") );
if ( m_clientObject )
delete m_clientObject;
m_clientObject = data;
m_clientDataType = ClientData_Object;
}
wxClientData *wxWindowBase::DoGetClientObject() const
{
// it's not an error to call GetClientObject() on a window which doesn't
// have client data at all - NULL will be returned
wxASSERT_MSG( m_clientDataType != ClientData_Void,
wxT("this window doesn't have object client data") );
return m_clientObject;
}
void wxWindowBase::DoSetClientData( void *data )
{
wxASSERT_MSG( m_clientDataType != ClientData_Object,
wxT("can't have both object and void client data") );
m_clientData = data;
m_clientDataType = ClientData_Void;
}
void *wxWindowBase::DoGetClientData() const
{
// it's not an error to call GetClientData() on a window which doesn't have
// client data at all - NULL will be returned
wxASSERT_MSG( m_clientDataType != ClientData_Object,
wxT("this window doesn't have void client data") );
return m_clientData;
}
// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------
// propagate the colour change event to the subwindows
void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
{
wxWindowList::Node *node = GetChildren().GetFirst();
while ( node )
{
// Only propagate to non-top-level windows
wxWindow *win = node->GetData();
if ( !win->IsTopLevel() )
{
wxSysColourChangedEvent event2;
event.m_eventObject = win;
win->GetEventHandler()->ProcessEvent(event2);
}
node = node->GetNext();
}
}
// the default action is to populate dialog with data when it's created
void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
{
TransferDataToWindow();
}
// process Ctrl-Alt-mclick
void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
{
if ( event.ControlDown() && event.AltDown() )
{
// don't translate these strings
wxString port;
switch ( wxGetOsVersion() )
{
case wxMOTIF_X: port = _T("Motif"); break;
case wxMACINTOSH: port = _T("Mac"); break;
case wxBEOS: port = _T("BeOS"); break;
case wxGTK:
case wxGTK_WIN32:
case wxGTK_OS2:
case wxGTK_BEOS: port = _T("GTK"); break;
case wxWINDOWS:
case wxPENWINDOWS:
case wxWINDOWS_NT:
case wxWIN32S:
case wxWIN95:
case wxWIN386: port = _T("MS Windows"); break;
case wxMGL_UNIX:
case wxMGL_X:
case wxMGL_WIN32:
case wxMGL_OS2: port = _T("MGL"); break;
case wxWINDOWS_OS2:
case wxOS2_PM: port = _T("OS/2"); break;
default: port = _T("unknown"); break;
}
wxMessageBox(wxString::Format(
_T(
" wxWindows Library (%s port)\nVersion %u.%u.%u, compiled at %s %s\n Copyright (c) 1995-2000 wxWindows team"
),
port.c_str(),
wxMAJOR_VERSION,
wxMINOR_VERSION,
wxRELEASE_NUMBER,
__DATE__,
__TIME__
),
_T("wxWindows information"),
wxICON_INFORMATION | wxOK,
(wxWindow *)this);
}
else
{
event.Skip();
}
}
// ----------------------------------------------------------------------------
// list classes implementation
// ----------------------------------------------------------------------------
void wxWindowListNode::DeleteData()
{
delete (wxWindow *)GetData();
}
Reference in New Issue View Git Blame Copy Permalink