/////////////////////////////////////////////////////////////////////////////
-// Name: msw/scrolbar.cpp
+// Name: src/msw/scrolbar.cpp
// Purpose: wxScrollBar
// Author: Julian Smart
// Modified by:
#if wxUSE_SCROLLBAR
+#include "wx/scrolbar.h"
+
#ifndef WX_PRECOMP
#include "wx/utils.h"
+ #include "wx/settings.h"
#endif
-#include "wx/scrolbar.h"
#include "wx/msw/private.h"
-#include "wx/settings.h"
#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxScrollBarStyle )
}
bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
- WXWORD pos, WXHWND WXUNUSED(control))
+ WXWORD WXUNUSED(pos), WXHWND WXUNUSED(control))
{
- // current and max positions
- int position,
- maxPos, trackPos = pos;
+ // don't use pos parameter because it is limited to 16 bits, get the full
+ // 32 bit position from the control itself instead
+ WinStruct<SCROLLINFO> scrollInfo;
+ scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_TRACKPOS;
- wxUnusedVar(trackPos);
-
- // when we're dragging the scrollbar we can't use pos parameter because it
- // is limited to 16 bits
- // JACS: now always using GetScrollInfo, since there's no reason
- // not to
-// if ( wParam == SB_THUMBPOSITION || wParam == SB_THUMBTRACK )
- {
- SCROLLINFO scrollInfo;
- wxZeroMemory(scrollInfo);
- scrollInfo.cbSize = sizeof(SCROLLINFO);
-
- // also get the range if we call GetScrollInfo() anyhow -- this is less
- // expensive than call it once here and then call GetScrollRange()
- // below
- scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_TRACKPOS;
-
- if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) )
- {
- wxLogLastError(_T("GetScrollInfo"));
- }
-
- trackPos = scrollInfo.nTrackPos;
- position = scrollInfo.nPos;
- maxPos = scrollInfo.nMax;
- }
-#if 0
- else
+ if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) )
{
- position = ::GetScrollPos((HWND) control, SB_CTL);
- int minPos;
- ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos);
+ wxLogLastError(wxT("GetScrollInfo"));
+ return false;
}
-#endif
-#if defined(__WIN95__)
+ int maxPos = scrollInfo.nMax;
+
// A page size greater than one has the effect of reducing the effective
// range, therefore the range has already been boosted artificially - so
// reduce it again.
if ( m_pageSize > 1 )
maxPos -= (m_pageSize - 1);
-#endif // __WIN95__
+ int position = scrollInfo.nPos;
wxEventType scrollEvent = wxEVT_NULL;
-
- int nScrollInc;
switch ( wParam )
{
- case SB_BOTTOM:
- nScrollInc = maxPos - position;
+ case SB_TOP:
+ position = 0;
scrollEvent = wxEVT_SCROLL_TOP;
break;
- case SB_TOP:
- nScrollInc = -position;
+ case SB_BOTTOM:
+ position = maxPos;
scrollEvent = wxEVT_SCROLL_BOTTOM;
break;
case SB_LINEUP:
- nScrollInc = -1;
+ position--;
scrollEvent = wxEVT_SCROLL_LINEUP;
break;
case SB_LINEDOWN:
- nScrollInc = 1;
+ position++;
scrollEvent = wxEVT_SCROLL_LINEDOWN;
break;
case SB_PAGEUP:
- nScrollInc = -GetPageSize();
+ position -= GetPageSize();
scrollEvent = wxEVT_SCROLL_PAGEUP;
break;
case SB_PAGEDOWN:
- nScrollInc = GetPageSize();
+ position += GetPageSize();
scrollEvent = wxEVT_SCROLL_PAGEDOWN;
break;
case SB_THUMBPOSITION:
- nScrollInc = trackPos - position;
- scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
- break;
-
case SB_THUMBTRACK:
- nScrollInc = trackPos - position;
- scrollEvent = wxEVT_SCROLL_THUMBTRACK;
+ position = scrollInfo.nTrackPos;
+ scrollEvent = wParam == SB_THUMBPOSITION ? wxEVT_SCROLL_THUMBRELEASE
+ : wxEVT_SCROLL_THUMBTRACK;
break;
case SB_ENDSCROLL:
- nScrollInc = 0;
scrollEvent = wxEVT_SCROLL_CHANGED;
break;
-
- default:
- nScrollInc = 0;
}
- if ( nScrollInc )
+ if ( position != scrollInfo.nPos )
{
- position += nScrollInc;
-
if ( position < 0 )
position = 0;
if ( position > maxPos )
event.SetPosition(position);
event.SetEventObject( this );
- return GetEventHandler()->ProcessEvent(event);
+ return HandleWindowEvent(event);
}
void wxScrollBar::SetThumbPosition(int viewStart)
{
-#if defined(__WIN95__)
SCROLLINFO info;
info.cbSize = sizeof(SCROLLINFO);
info.nPage = 0;
info.fMask = SIF_POS ;
::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE);
-#else
- ::SetScrollPos((HWND) GetHWND(), SB_CTL, viewStart, TRUE);
-#endif
}
int wxScrollBar::GetThumbPosition(void) const
if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) )
{
- wxLogLastError(_T("GetScrollInfo"));
+ wxLogLastError(wxT("GetScrollInfo"));
}
return scrollInfo.nPos;
-// return ::GetScrollPos((HWND)m_hWnd, SB_CTL);
}
void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize,
bool refresh)
{
- m_viewSize = pageSize;
- m_pageSize = thumbSize;
- m_objectSize = range;
-
- // The range (number of scroll steps) is the
- // object length minus the page size.
- int range1 = wxMax((m_objectSize - m_pageSize), 0) ;
-
-#if defined(__WIN95__)
- // Try to adjust the range to cope with page size > 1
- // (see comment for SetPageLength)
- if ( m_pageSize > 1 )
- {
- range1 += (m_pageSize - 1);
- }
-
- SCROLLINFO info;
- info.cbSize = sizeof(SCROLLINFO);
- info.nPage = m_pageSize;
- info.nMin = 0;
- info.nMax = range1;
- info.nPos = position;
-
- info.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
-
- ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, refresh);
-#else
- ::SetScrollPos((HWND)m_hWnd, SB_CTL, position, refresh);
- ::SetScrollRange((HWND)m_hWnd, SB_CTL, 0, range1, refresh);
-#endif
+ m_viewSize = pageSize;
+ m_pageSize = thumbSize;
+ m_objectSize = range;
+
+ // The range (number of scroll steps) is the
+ // object length minus the page size.
+ int range1 = wxMax((m_objectSize - m_pageSize), 0) ;
+
+ // Try to adjust the range to cope with page size > 1
+ // (see comment for SetPageLength)
+ if ( m_pageSize > 1 )
+ {
+ range1 += (m_pageSize - 1);
+ }
+
+ SCROLLINFO info;
+ info.cbSize = sizeof(SCROLLINFO);
+ info.nPage = m_pageSize;
+ info.nMin = 0;
+ info.nMax = range1;
+ info.nPos = position;
+
+ info.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
+
+ ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, refresh);
}
void wxScrollBar::Command(wxCommandEvent& event)
projects / wxWidgets.git / blobdiff