// Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement.
// Ron Lee on 10.4.02: virtual size / auto scrollbars et al.
// Created: 01/02/97
-// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
virtual bool ProcessEvent(wxEvent& event);
- void ResetDrawnFlag() { m_hasDrawnWindow = false; }
-
private:
wxScrollHelperBase *m_scrollHelper;
- bool m_hasDrawnWindow;
-
wxDECLARE_NO_COPY_CLASS(wxScrollHelperEvtHandler);
};
// first scroll the window if we are allowed to do it
wxScrollWinEvent event1(m_eventType, m_pos, m_orient);
event1.SetEventObject(m_win);
+ event1.SetId(m_win->GetId());
if ( m_scrollHelper->SendAutoScrollEvents(event1) &&
m_win->GetEventHandler()->ProcessEvent(event1) )
{
event2.SetEventObject(m_win);
- // FIXME: we don't fill in the other members - ok?
+ wxMouseState mouseState = wxGetMouseState();
+
+ event2.m_leftDown = mouseState.LeftIsDown();
+ event2.m_middleDown = mouseState.MiddleIsDown();
+ event2.m_rightDown = mouseState.RightIsDown();
+
+ event2.m_shiftDown = mouseState.ShiftDown();
+ event2.m_controlDown = mouseState.ControlDown();
+ event2.m_altDown = mouseState.AltDown();
+ event2.m_metaDown = mouseState.MetaDown();
m_win->GetEventHandler()->ProcessEvent(event2);
}
// wxScrollHelperEvtHandler
// ----------------------------------------------------------------------------
+// Notice that this method is currently duplicated in the method with the same
+// name in wxVarScrollHelperEvtHandler class, until this is fixed, the other
+// copy of the method needs to be modified every time this version is.
bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
{
wxEventType evType = event.GetEventType();
- // the explanation of wxEVT_PAINT processing hack: for historic reasons
- // there are 2 ways to process this event in classes deriving from
- // wxScrolledWindow. The user code may
- //
- // 1. override wxScrolledWindow::OnDraw(dc)
- // 2. define its own OnPaint() handler
- //
- // In addition, in wxUniversal wxWindow defines OnPaint() itself and
- // always processes the draw event, so we can't just try the window
- // OnPaint() first and call our HandleOnPaint() if it doesn't process it
- // (the latter would never be called in wxUniversal).
- //
- // So the solution is to have a flag telling us whether the user code drew
- // anything in the window. We set it to true here but reset it to false in
- // wxScrolledWindow::OnPaint() handler (which wouldn't be called if the
- // user code defined OnPaint() in the derived class)
- m_hasDrawnWindow = true;
-
- // pass it on to the real handler
- bool processed = m_nextHandler->ProcessEventLocally(event);
+ // Pass it on to the real handler: notice that we must not call
+ // ProcessEvent() on this object itself as it wouldn't pass it to the next
+ // handler (i.e. the real window) if we're called from a previous handler
+ // (as indicated by "process here only" flag being set) and we do want to
+ // execute the handler defined in the window we're associated with right
+ // now, without waiting until TryAfter() is called from wxEvtHandler.
+ bool processed = m_nextHandler->ProcessEvent(event);
// always process the size events ourselves, even if the user code handles
// them as well, as we need to AdjustScrollbars()
if ( evType == wxEVT_SIZE )
{
m_scrollHelper->HandleOnSize((wxSizeEvent &)event);
-
return true;
}
- if ( processed )
- {
- // normally, nothing more to do here - except if it was a paint event
- // which wasn't really processed, then we'll try to call our
- // OnDraw() below (from HandleOnPaint)
- if ( m_hasDrawnWindow || event.IsCommandEvent() )
- {
- return true;
- }
- }
+ if ( processed && event.IsCommandEvent())
+ return true;
- if ( evType == wxEVT_PAINT )
+ // For wxEVT_PAINT the user code can either handle this event as usual or
+ // override virtual OnDraw(), so if the event hasn't been handled we need
+ // to call this virtual function ourselves.
+ if (
+#ifndef __WXUNIVERSAL__
+ // in wxUniversal "processed" will always be true, because
+ // all windows use the paint event to draw themselves.
+ // In this case we can't use this flag to determine if a custom
+ // paint event handler already drew our window and we just
+ // call OnDraw() anyway.
+ !processed &&
+#endif // !__WXUNIVERSAL__
+ evType == wxEVT_PAINT )
{
m_scrollHelper->HandleOnPaint((wxPaintEvent &)event);
return true;
event.Skip(wasSkipped);
+ // We called ProcessEvent() on the next handler, meaning that we explicitly
+ // worked around the request to process the event in this handler only. As
+ // explained above, this is unfortunately really necessary but the trouble
+ // is that the event will continue to be post-processed by the previous
+ // handler resulting in duplicate calls to event handlers. Call the special
+ // function below to prevent this from happening, base class DoTryChain()
+ // will check for it and behave accordingly.
+ //
+ // And if we're not called from DoTryChain(), this won't do anything anyhow.
+ event.DidntHonourProcessOnlyIn();
+
return processed;
}
// ============================================================================
-// wxScrollHelperBase implementation
+// wxAnyScrollHelperBase and wxScrollHelperBase implementation
// ============================================================================
// ----------------------------------------------------------------------------
-// wxScrollHelperBase construction
+// wxAnyScrollHelperBase
// ----------------------------------------------------------------------------
-wxScrollHelperBase::wxScrollHelperBase(wxWindow *win)
+wxAnyScrollHelperBase::wxAnyScrollHelperBase(wxWindow* win)
{
wxASSERT_MSG( win, wxT("associated window can't be NULL in wxScrollHelper") );
+ m_win = win;
+ m_targetWindow = NULL;
+
+ m_kbdScrollingEnabled = true;
+}
+
+// ----------------------------------------------------------------------------
+// wxScrollHelperBase construction
+// ----------------------------------------------------------------------------
+
+wxScrollHelperBase::wxScrollHelperBase(wxWindow *win)
+ : wxAnyScrollHelperBase(win)
+{
m_xScrollPixelsPerLine =
m_yScrollPixelsPerLine =
m_xScrollPosition =
m_wheelRotation = 0;
#endif
- m_win =
- m_targetWindow = NULL;
-
m_timerAutoScroll = NULL;
m_handler = NULL;
- m_win = win;
-
m_win->SetScrollHelper(static_cast<wxScrollHelper *>(this));
// by default, the associated window is also the target window
int yPos,
bool noRefresh)
{
- int xpos, ypos;
+ // Convert positions expressed in scroll units to positions in pixels.
+ int xPosInPixels = (xPos + m_xScrollPosition)*m_xScrollPixelsPerLine,
+ yPosInPixels = (yPos + m_yScrollPosition)*m_yScrollPixelsPerLine;
- CalcUnscrolledPosition(xPos, yPos, &xpos, &ypos);
bool do_refresh =
(
(noUnitsX != 0 && m_xScrollLines == 0) ||
- (noUnitsX < m_xScrollLines && xpos > pixelsPerUnitX * noUnitsX) ||
+ (noUnitsX < m_xScrollLines && xPosInPixels > pixelsPerUnitX * noUnitsX) ||
(noUnitsY != 0 && m_yScrollLines == 0) ||
- (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY * noUnitsY) ||
+ (noUnitsY < m_yScrollLines && yPosInPixels > pixelsPerUnitY * noUnitsY) ||
(xPos != m_xScrollPosition) ||
(yPos != m_yScrollPosition)
);
}
}
-void wxScrollHelperBase::ResetDrawnFlag()
-{
- wxCHECK_RET( m_handler, "invalid use of ResetDrawnFlag - no handler?" );
- m_handler->ResetDrawnFlag();
-}
-
void wxScrollHelperBase::DoSetTargetWindow(wxWindow *target)
{
m_targetWindow = target;
DoSetTargetWindow(target);
}
-wxWindow *wxScrollHelperBase::GetTargetWindow() const
-{
- return m_targetWindow;
-}
-
// ----------------------------------------------------------------------------
// scrolling implementation itself
// ----------------------------------------------------------------------------
// This calls OnDraw, having adjusted the origin according to the current
// scroll position
-void wxScrollHelperBase::HandleOnPaint(wxPaintEvent& WXUNUSED(event))
+void wxAnyScrollHelperBase::HandleOnPaint(wxPaintEvent& WXUNUSED(event))
{
// don't use m_targetWindow here, this is always called for ourselves
wxPaintDC dc(m_win);
// compatibility here - if we used OnKeyDown(), the programs which process
// arrows themselves in their OnChar() would never get the message and like
// this they always have the priority
-void wxScrollHelperBase::HandleOnChar(wxKeyEvent& event)
+void wxAnyScrollHelperBase::HandleOnChar(wxKeyEvent& event)
{
+ if ( !m_kbdScrollingEnabled )
+ {
+ event.Skip();
+ return;
+ }
+
// prepare the event this key press maps to
wxScrollWinEvent newEvent;
newEvent.SetPosition(0);
newEvent.SetEventObject(m_win);
+ newEvent.SetId(m_win->GetId());
// this is the default, it's changed to wxHORIZONTAL below if needed
newEvent.SetOrientation(wxVERTICAL);
void wxScrollHelperBase::StopAutoScrolling()
{
#if wxUSE_TIMER
- if ( m_timerAutoScroll )
- {
- delete m_timerAutoScroll;
- m_timerAutoScroll = NULL;
- }
+ wxDELETE(m_timerAutoScroll);
#endif
}
newEvent.SetOrientation( event.GetWheelAxis() == 0 ? wxVERTICAL : wxHORIZONTAL);
newEvent.SetEventObject(m_win);
+ if ( event.GetWheelAxis() == wxMOUSE_WHEEL_HORIZONTAL )
+ lines = -lines;
+
if (event.IsPageScroll())
{
if (lines > 0)
// part of a wxComboCtrl visible and the button would still be outside the
// scrolled area. But do so only if the parent fits *entirely* inside the
// scrolled window. In other situations, such as nested wxPanel or
- // wxScrolledWindows, the parent might be way to big to fit inside the
+ // wxScrolledWindows, the parent might be way too big to fit inside the
// scrolled window. If that is the case, then make only the focused window
// visible
if ( win->GetParent() != m_targetWindow)
m_yVisibility = wxSHOW_SB_DEFAULT;
}
+bool wxScrollHelper::IsScrollbarShown(int orient) const
+{
+ wxScrollbarVisibility visibility = orient == wxHORIZONTAL ? m_xVisibility
+ : m_yVisibility;
+
+ return visibility != wxSHOW_SB_NEVER;
+}
+
void wxScrollHelper::DoShowScrollbars(wxScrollbarVisibility horz,
wxScrollbarVisibility vert)
{
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