-/////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
// Name: src/generic/panelg.cpp
-// Purpose: wxPanel and the keyboard handling code
-// Author: Julian Smart, Robert Roebling, Vadim Zeitlin
-// Modified by:
-// Created: 04/01/98
-// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
-/////////////////////////////////////////////////////////////////////////////
+// Purpose: Generic wxPanel implementation.
+// Author: Vadim Zeitlin
+// Created: 2011-03-20
+// RCS-ID: $Id: wxhead.cpp,v 1.11 2010-04-22 12:44:51 zeitlin Exp $
+// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "panelg.h"
-#endif
-
-// For compilers that support precompilation, includes "wx.h".
+// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#endif
#ifndef WX_PRECOMP
- #include "wx/object.h"
- #include "wx/font.h"
- #include "wx/colour.h"
- #include "wx/settings.h"
- #include "wx/log.h"
-#endif
-
-#include "wx/generic/panelg.h"
-
-// ----------------------------------------------------------------------------
-// wxWin macros
-// ----------------------------------------------------------------------------
+ #include "wx/dc.h"
+ #include "wx/panel.h"
+#endif // WX_PRECOMP
-IMPLEMENT_DYNAMIC_CLASS(wxPanel, wxWindow)
-
-BEGIN_EVENT_TABLE(wxPanel, wxWindow)
- EVT_SYS_COLOUR_CHANGED(wxPanel::OnSysColourChanged)
- EVT_SET_FOCUS(wxPanel::OnFocus)
- EVT_NAVIGATION_KEY(wxPanel::OnNavigationKey)
- EVT_SIZE(wxPanel::OnSize)
-END_EVENT_TABLE()
+#ifdef wxHAS_GENERIC_PANEL
// ============================================================================
// implementation
// ============================================================================
-// ----------------------------------------------------------------------------
-// wxPanel creation
-// ----------------------------------------------------------------------------
-
-void wxPanel::Init()
-{
- m_winLastFocused = (wxWindow *)NULL;
- m_btnDefault = (wxButton *)NULL;
-}
-
-bool wxPanel::Create(wxWindow *parent, wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name)
+void wxPanel::DoSetBackgroundBitmap(const wxBitmap& bmp)
{
- bool ret = wxWindow::Create(parent, id, pos, size, style, name);
+ m_bitmapBg = bmp;
- if ( ret )
+ if ( m_bitmapBg.IsOk() )
{
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
- }
-
- return ret;
-}
-
-// ----------------------------------------------------------------------------
-// misc
-// ----------------------------------------------------------------------------
-
-void wxPanel::InitDialog()
-{
- wxInitDialogEvent event(GetId());
- event.SetEventObject(this);
- GetEventHandler()->ProcessEvent(event);
-}
-
-// Responds to colour changes, and passes event on to children.
-void wxPanel::OnSysColourChanged(wxSysColourChangedEvent& event)
-{
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
- Refresh();
-
- // Propagate the event to the non-top-level children
- wxWindow::OnSysColourChanged(event);
-}
-
-void wxPanel::OnSize(wxSizeEvent& WXUNUSED(event))
-{
-#if wxUSE_CONSTRAINTS
- if (GetAutoLayout())
- Layout();
-#endif
-}
-
-// ----------------------------------------------------------------------------
-// Keyboard handling - this is the place where the TAB traversal logic is
-// implemented. As this code is common to all ports, this ensures consistent
-// behaviour even if we don't specify how exactly the wxNavigationKeyEvent are
-// generated and this is done in platform specific code which also ensures that
-// we can follow the given platform standards.
-// ----------------------------------------------------------------------------
-
-void wxPanel::OnNavigationKey( wxNavigationKeyEvent& event )
-{
- // there is not much to do if we have only one child (or not at all) and
- // we're not interested in "notebook page change" events here
- if ( (GetChildren().GetCount() < 2) || event.IsWindowChange() )
- {
- wxWindow *parent = GetParent();
- if ( !parent || !parent->GetEventHandler()->ProcessEvent(event) )
- {
- event.Skip();
- }
-
- return;
- }
-
- // where are we going?
- bool forward = event.GetDirection();
-
- // the node of the children list from which we should start looking for the
- // next acceptable child
- wxWindowList::Node *node, *start_node;
-
- // the event is propagated downwards if the event emitter was our parent
- bool goingDown = event.GetEventObject() == GetParent();
-
- const wxWindowList& children = GetChildren();
-
- // we should start from the first/last control and not from the one which
- // had focus the last time if we're propagating the event downwards because
- // for our parent we look like a single control
- if ( goingDown )
- {
- // just to be sure it's not used (normally this is not necessary, but
- // doesn't hurt neither)
- m_winLastFocused = (wxWindow *)NULL;
-
- // start from first or last depending on where we're going
- node = forward ? children.GetFirst() : children.GetLast();
-
- // we want to cycle over all nodes
- start_node = (wxWindowList::Node *)NULL;
+ Connect(wxEVT_ERASE_BACKGROUND,
+ wxEraseEventHandler(wxPanel::OnEraseBackground));
}
else
{
- // try to find the child which has the focus currently
-
- // the event emitter might have done this for us
- wxWindow *winFocus = event.GetCurrentFocus();
-
- // but if not, we might know where the focus was ourselves
- if (!winFocus)
- winFocus = m_winLastFocused;
-
- // if still no luck, do it the hard way
- if (!winFocus)
- winFocus = wxWindow::FindFocus();
-
- if ( winFocus )
- {
- // ok, we found the focus - now is it our child?
- start_node = children.Find( winFocus );
- }
- else
- {
- start_node = (wxWindowList::Node *)NULL;
- }
-
- if ( !start_node && m_winLastFocused )
- {
- // window which has focus isn't our child, fall back to the one
- // which had the focus the last time
- start_node = children.Find( m_winLastFocused );
- }
-
- // if we still didn't find anything, we should start with the first one
- if ( !start_node )
- {
- start_node = children.GetFirst();
- }
-
- // and the first child which we can try setting focus to is the next or
- // the previous one
- node = forward ? start_node->GetNext() : start_node->GetPrevious();
- }
-
- // we want to cycle over all elements passing by NULL
- while ( node != start_node )
- {
- // Have we come to the last or first item on the panel?
- if ( !node )
- {
- if ( !goingDown )
- {
- // Check if our (may be grand) parent is another panel: if this
- // is the case, they will know what to do with this navigation
- // key and so give them the chance to process it instead of
- // looping inside this panel (normally, the focus will go to
- // the next/previous item after this panel in the parent
- // panel).
- wxWindow *focussed_child_of_parent = this;
- for ( wxWindow *parent = GetParent();
- parent;
- parent = parent->GetParent() )
- {
- // we don't want to tab into a different dialog or frame
- if ( focussed_child_of_parent->IsTopLevel() )
- break;
-
- event.SetCurrentFocus( focussed_child_of_parent );
- if (parent->GetEventHandler()->ProcessEvent( event ))
- return;
-
- focussed_child_of_parent = parent;
- }
- }
- //else: as the focus came from our parent, we definitely don't want
- // to send it back to it!
-
- // no, we are not inside another panel so process this ourself
- node = forward ? children.GetFirst() : children.GetLast();
-
- continue;
- }
-
- wxWindow *child = node->GetData();
-
- if ( child->AcceptsFocus() )
- {
- m_winLastFocused = child; // should be redundant, but it is not
-
- // if we're setting the focus to a child panel we should prevent it
- // from giving it to the child which had the focus the last time
- // and instead give it to the first/last child depending from which
- // direction we're coming
- wxPanel *subpanel = wxDynamicCast(child, wxPanel);
- if ( subpanel )
- {
- // trick the panel into thinking that it got the navigation
- // event - instead of duplicating all the code here
- //
- // make sure that we do trick it by setting all the parameters
- // correctly (consistently with the code in this very function
- // above) and that it starts from the very beginning/end by
- // using SetLastFocus(NULL)
- subpanel->SetLastFocus((wxWindow *)NULL);
- }
-
- event.SetEventObject(this);
- if ( !child->GetEventHandler()->ProcessEvent(event) )
- {
- // everything is simple: just give focus to it
- child->SetFocus();
- }
- //else: the child manages its focus itself
-
- return;
- }
-
- node = forward ? node->GetNext() : node->GetPrevious();
+ Disconnect(wxEVT_ERASE_BACKGROUND,
+ wxEraseEventHandler(wxPanel::OnEraseBackground));
}
-
- // we cycled through all of our children and none of them wanted to accept
- // focus
- event.Skip();
-}
-
-void wxPanel::SetFocus()
-{
- wxLogTrace(_T("focus"), _T("SetFocus on wxPanel 0x%08x."), GetHandle());
-
- // If the panel gets the focus *by way of getting it set directly*
- // we move the focus to the first window that can get it.
-
- // VZ: no, we set the focus to the last window too. I don't understand why
- // should we make this distinction: if an app wants to set focus to
- // some precise control, it may always do it directly, but if we don't
- // use m_winLastFocused here, the focus won't be set correctly after a
- // notebook page change nor after frame activation under MSW (it calls
- // SetFocus too)
- //
- // RR: yes, when I the tab key to navigate in a panel with some controls and
- // a notebook and the focus jumps to the notebook (typically coming from
- // a button at the top) the notebook should focus the first child in the
- // current notebook page, not the last one which would otherwise get the
- // focus if you used the tab key to navigate from the current notebook
- // page to button at the bottom. See every page in the controls sample.
- //
- // VZ: ok, but this still doesn't (at least I don't see how it can) take
- // care of first/last child problem: i.e. if Shift-TAB is pressed in a
- // situation like above, the focus should be given to the last child,
- // not the first one (and not to the last focused one neither) - I
- // think my addition to OnNavigationKey() above takes care of it.
- // Keeping #ifdef __WXGTK__ for now, but please try removing it and see
- // what happens.
- // RR: Removed for now.
-
- if ( !SetFocusToChild() )
- {
- wxWindow::SetFocus();
- }
-}
-
-void wxPanel::OnFocus(wxFocusEvent& event)
-{
- wxLogTrace(_T("focus"), _T("OnFocus on wxPanel 0x%08x, name: %s"), GetHandle(), GetName().c_str() );
-
- // If the panel gets the focus *by way of getting clicked on*
- // we move the focus to either the last window that had the
- // focus or the first one that can get it.
- (void)SetFocusToChild();
-
- event.Skip();
}
-bool wxPanel::SetFocusToChild()
+void wxPanel::OnEraseBackground(wxEraseEvent& event)
{
- if ( m_winLastFocused )
- {
- // It might happen that the window got reparented or no longer accepts
- // the focus.
- if ( (m_winLastFocused->GetParent() == this) &&
- m_winLastFocused->AcceptsFocus() )
- {
- wxLogTrace(_T("focus"),
- _T("SetFocusToChild() => last child (0x%08x)."),
- m_winLastFocused->GetHandle());
+ wxDC& dc = *event.GetDC();
- m_winLastFocused->SetFocus();
- return TRUE;
- }
- else
- {
- // it doesn't count as such any more
- m_winLastFocused = (wxWindow *)NULL;
- }
- }
+ const wxSize clientSize = GetClientSize();
+ const wxSize bitmapSize = m_bitmapBg.GetSize();
- // set the focus to the first child who wants it
- wxWindowList::Node *node = GetChildren().GetFirst();
- while ( node )
+ for ( int x = 0; x < clientSize.x; x += bitmapSize.x )
{
- wxWindow *child = node->GetData();
- if ( child->AcceptsFocus() )
+ for ( int y = 0; y < clientSize.y; y += bitmapSize.y )
{
- wxLogTrace(_T("focus"),
- _T("SetFocusToChild() => first child (0x%08x)."),
- child->GetHandle());
-
- m_winLastFocused = child; // should be redundant, but it is not
- child->SetFocus();
- return TRUE;
+ dc.DrawBitmap(m_bitmapBg, x, y);
}
-
- node = node->GetNext();
}
-
- return FALSE;
}
+
+#endif // wxHAS_GENERIC_PANEL
projects / wxWidgets.git / blobdiff