#include "wx/utils.h"
#include "wx/dcclient.h"
-#ifdef __WINDOWS__
-#include "windows.h"
-#endif
-
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/generic/scrolwin.h"
+#include "wx/panel.h"
#if !USE_SHARED_LIBRARY
-BEGIN_EVENT_TABLE(wxScrolledWindow, wxWindow)
- EVT_SCROLL(wxScrolledWindow::OnScroll)
- EVT_SIZE(wxScrolledWindow::OnSize)
- EVT_PAINT(wxScrolledWindow::OnPaint)
+BEGIN_EVENT_TABLE(wxScrolledWindow, wxPanel)
+ EVT_SCROLLWIN(wxScrolledWindow::OnScroll)
+ EVT_SIZE(wxScrolledWindow::OnSize)
+ EVT_PAINT(wxScrolledWindow::OnPaint)
END_EVENT_TABLE()
-IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxWindow)
+IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxPanel)
+#endif
+
+#ifdef __WXMSW__
+#include "windows.h"
+#endif
+
+#ifdef __WXMOTIF__
+// For wxRETAINED implementation
+#include <Xm/Xm.h>
#endif
-wxScrolledWindow::wxScrolledWindow(void)
+wxScrolledWindow::wxScrolledWindow()
{
- m_xScrollPixelsPerLine = 0;
- m_yScrollPixelsPerLine = 0;
- m_xScrollingEnabled = TRUE;
- m_yScrollingEnabled = TRUE;
- m_xScrollPosition = 0;
- m_yScrollPosition = 0;
- m_xScrollLines = 0;
- m_yScrollLines = 0;
- m_xScrollLinesPerPage = 0;
- m_yScrollLinesPerPage = 0;
+ m_xScrollPixelsPerLine = 0;
+ m_yScrollPixelsPerLine = 0;
+ m_xScrollingEnabled = TRUE;
+ m_yScrollingEnabled = TRUE;
+ m_xScrollPosition = 0;
+ m_yScrollPosition = 0;
+ m_xScrollLines = 0;
+ m_yScrollLines = 0;
+ m_xScrollLinesPerPage = 0;
+ m_yScrollLinesPerPage = 0;
+ m_scaleX = 1.0;
+ m_scaleY = 1.0;
}
bool wxScrolledWindow::Create(wxWindow *parent, wxWindowID id,
long style,
const wxString& name)
{
- m_xScrollPixelsPerLine = 0;
- m_yScrollPixelsPerLine = 0;
- m_xScrollingEnabled = TRUE;
- m_yScrollingEnabled = TRUE;
- m_xScrollPosition = 0;
- m_yScrollPosition = 0;
- m_xScrollLines = 0;
- m_yScrollLines = 0;
- m_xScrollLinesPerPage = 0;
- m_yScrollLinesPerPage = 0;
-
- return wxWindow::Create(parent, id, pos, size, style, name);
+ m_xScrollPixelsPerLine = 0;
+ m_yScrollPixelsPerLine = 0;
+ m_xScrollingEnabled = TRUE;
+ m_yScrollingEnabled = TRUE;
+ m_xScrollPosition = 0;
+ m_yScrollPosition = 0;
+ m_xScrollLines = 0;
+ m_yScrollLines = 0;
+ m_xScrollLinesPerPage = 0;
+ m_yScrollLinesPerPage = 0;
+ m_scaleX = 1.0;
+ m_scaleY = 1.0;
+
+ return wxPanel::Create(parent, id, pos, size, style, name);
}
/*
int noUnitsX, int noUnitsY,
int xPos, int yPos, bool noRefresh )
{
- bool do_refresh =
- (
+ bool do_refresh =
+ (
(noUnitsX != 0 && m_xScrollLines == 0) ||
- (noUnitsX < m_xScrollPosition) ||
+ (noUnitsX < m_xScrollLines) ||
(noUnitsY != 0 && m_yScrollLines == 0) ||
- (noUnitsY < m_yScrollPosition) ||
+ (noUnitsY < m_yScrollLines) ||
(xPos != m_xScrollPosition) ||
(yPos != m_yScrollPosition) ||
(pixelsPerUnitX != m_xScrollPixelsPerLine) ||
(pixelsPerUnitY != m_yScrollPixelsPerLine)
- );
+ );
- m_xScrollPixelsPerLine = pixelsPerUnitX;
- m_yScrollPixelsPerLine = pixelsPerUnitY;
- m_xScrollLines = noUnitsX;
- m_yScrollLines = noUnitsY;
+ m_xScrollPixelsPerLine = pixelsPerUnitX;
+ m_yScrollPixelsPerLine = pixelsPerUnitY;
+ m_xScrollPosition = xPos;
+ m_yScrollPosition = yPos;
+ m_xScrollLines = noUnitsX;
+ m_yScrollLines = noUnitsY;
+
+#ifdef __WXMOTIF__
+ // Sorry, some Motif-specific code to implement a backing pixmap
+ // for the wxRETAINED style. Implementing a backing store can't
+ // be entirely generic because it relies on the wxWindowDC implementation
+ // to duplicate X drawing calls for the backing pixmap.
+
+ if ((m_windowStyle & wxRETAINED) == wxRETAINED)
+ {
+ Display* dpy = XtDisplay((Widget) GetMainWidget());
+
+ int totalPixelWidth = m_xScrollLines * m_xScrollPixelsPerLine;
+ int totalPixelHeight = m_yScrollLines * m_yScrollPixelsPerLine;
+ if (m_backingPixmap &&
+ !((m_pixmapWidth == totalPixelWidth) &&
+ (m_pixmapHeight == totalPixelHeight)))
+ {
+ XFreePixmap (dpy, (Pixmap) m_backingPixmap);
+ m_backingPixmap = (WXPixmap) 0;
+ }
+
+ if (!m_backingPixmap &&
+ (noUnitsX != 0) && (noUnitsY != 0))
+ {
+ int depth = wxDisplayDepth();
+ m_pixmapWidth = totalPixelWidth;
+ m_pixmapHeight = totalPixelHeight;
+ m_backingPixmap = (WXPixmap) XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)),
+ m_pixmapWidth, m_pixmapHeight, depth);
+ }
- AdjustScrollbars();
+ }
+#endif
+
+ AdjustScrollbars();
- if (do_refresh && !noRefresh) Refresh();
+ if (do_refresh && !noRefresh)
+ Refresh();
-#ifdef __WINDOWS__
+#ifdef __WXMSW__
+ // Necessary?
UpdateWindow ((HWND) GetHWND());
#endif
}
-void wxScrolledWindow::OnScroll(wxScrollEvent& event)
+void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
{
- int orient = event.GetOrientation();
-
- int nScrollInc = CalcScrollInc(event);
- if (nScrollInc == 0)
- return;
+ int orient = event.GetOrientation();
- // TODO: should we store the scroll position here as well as in wxWindow?
- if (orient == wxHORIZONTAL)
- {
- int newPos = m_xScrollPosition + nScrollInc;
- SetScrollPos(wxHORIZONTAL, newPos, TRUE );
- }
- else
- {
- int newPos = m_yScrollPosition + nScrollInc;
- SetScrollPos(wxVERTICAL, newPos, TRUE );
- }
+ int nScrollInc = CalcScrollInc(event);
+ if (nScrollInc == 0) return;
-/*
- // TODO We need to multiply the ScrollWindow amount by the scaling
- // factor, but how do we know what this is in wxWin 2.0???
- float scaleX = 1.0;
- float scaleY = 1.0;
-
- if ( this->IsKindOf(CLASSINFO(wxCanvas)) )
- {
- wxDC* dc = ((wxCanvas *)this)->GetDC();
- dc->GetUserScale(&scaleX, &scaleY);
- }
-*/
+ if (orient == wxHORIZONTAL)
+ {
+ int newPos = m_xScrollPosition + nScrollInc;
+ SetScrollPos(wxHORIZONTAL, newPos, TRUE );
+ }
+ else
+ {
+ int newPos = m_yScrollPosition + nScrollInc;
+ SetScrollPos(wxVERTICAL, newPos, TRUE );
+ }
- if (orient == wxHORIZONTAL)
- {
- m_xScrollPosition += nScrollInc;
- }
- else
- {
- m_yScrollPosition += nScrollInc;
- }
-
- if (orient == wxHORIZONTAL)
- {
- if (m_xScrollingEnabled)
- ScrollWindow(-m_xScrollPixelsPerLine * nScrollInc, 0, NULL);
+ if (orient == wxHORIZONTAL)
+ {
+ m_xScrollPosition += nScrollInc;
+ }
else
- Refresh();
- }
- else
- {
- if (m_yScrollingEnabled)
- ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, NULL);
+ {
+ m_yScrollPosition += nScrollInc;
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ if (m_xScrollingEnabled)
+ ScrollWindow(-m_xScrollPixelsPerLine * nScrollInc, 0, (const wxRect *) NULL);
+ else
+ Refresh();
+ }
else
- Refresh();
+ {
+ if (m_yScrollingEnabled)
+ ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL);
+ else
+ Refresh();
}
-
}
-int wxScrolledWindow::CalcScrollInc(wxScrollEvent& event)
+int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
{
int pos = event.GetPosition();
int orient = event.GetOrientation();
int nScrollInc = 0;
switch (event.GetEventType())
{
- case wxEVENT_TYPE_SCROLL_TOP:
+ case wxEVT_SCROLLWIN_TOP:
{
if (orient == wxHORIZONTAL)
nScrollInc = - m_xScrollPosition;
nScrollInc = - m_yScrollPosition;
break;
}
- case wxEVENT_TYPE_SCROLL_BOTTOM:
+ case wxEVT_SCROLLWIN_BOTTOM:
{
if (orient == wxHORIZONTAL)
nScrollInc = m_xScrollLines - m_xScrollPosition;
nScrollInc = m_yScrollLines - m_yScrollPosition;
break;
}
- case wxEVENT_TYPE_SCROLL_LINEUP:
+ case wxEVT_SCROLLWIN_LINEUP:
{
nScrollInc = -1;
break;
}
- case wxEVENT_TYPE_SCROLL_LINEDOWN:
+ case wxEVT_SCROLLWIN_LINEDOWN:
{
nScrollInc = 1;
break;
}
- case wxEVENT_TYPE_SCROLL_PAGEUP:
+ case wxEVT_SCROLLWIN_PAGEUP:
{
if (orient == wxHORIZONTAL)
nScrollInc = -GetScrollPageSize(wxHORIZONTAL);
nScrollInc = -GetScrollPageSize(wxVERTICAL);
break;
}
- case wxEVENT_TYPE_SCROLL_PAGEDOWN:
+ case wxEVT_SCROLLWIN_PAGEDOWN:
{
if (orient == wxHORIZONTAL)
nScrollInc = GetScrollPageSize(wxHORIZONTAL);
nScrollInc = GetScrollPageSize(wxVERTICAL);
break;
}
- case wxEVENT_TYPE_SCROLL_THUMBTRACK:
+ case wxEVT_SCROLLWIN_THUMBTRACK:
{
if (orient == wxHORIZONTAL)
nScrollInc = pos - m_xScrollPosition;
break;
}
}
+
if (orient == wxHORIZONTAL)
{
- int w, h;
- GetClientSize(&w, &h);
-
- int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxWidth - w)/(float)m_xScrollPixelsPerLine) + 0.5 );
- if (noPositions < 0)
- noPositions = 0;
-
- if ( (m_xScrollPosition + nScrollInc) < 0 )
- nScrollInc = -m_xScrollPosition; // As -ve as we can go
- else if ( (m_xScrollPosition + nScrollInc) > noPositions )
- nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go
-
- return nScrollInc;
+ if (m_xScrollPixelsPerLine > 0) {
+ int w, h;
+ GetClientSize(&w, &h);
+
+ int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
+ int noPositions = (int) ( ((nMaxWidth - w)/(float)m_xScrollPixelsPerLine) + 0.5 );
+ if (noPositions < 0)
+ noPositions = 0;
+
+ if ( (m_xScrollPosition + nScrollInc) < 0 )
+ nScrollInc = -m_xScrollPosition; // As -ve as we can go
+ else if ( (m_xScrollPosition + nScrollInc) > noPositions )
+ nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go
+ }
+ else
+ Refresh();
}
else
{
- int w, h;
- GetClientSize(&w, &h);
-
- int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxHeight - h)/(float)m_yScrollPixelsPerLine) + 0.5 );
- if (noPositions < 0)
- noPositions = 0;
-
- if ( (m_yScrollPosition + nScrollInc) < 0 )
- nScrollInc = -m_yScrollPosition; // As -ve as we can go
- else if ( (m_yScrollPosition + nScrollInc) > noPositions )
- nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go
-
- return nScrollInc;
+ if (m_yScrollPixelsPerLine > 0) {
+ int w, h;
+ GetClientSize(&w, &h);
+
+ int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
+ int noPositions = (int) ( ((nMaxHeight - h)/(float)m_yScrollPixelsPerLine) + 0.5 );
+ if (noPositions < 0)
+ noPositions = 0;
+
+ if ( (m_yScrollPosition + nScrollInc) < 0 )
+ nScrollInc = -m_yScrollPosition; // As -ve as we can go
+ else if ( (m_yScrollPosition + nScrollInc) > noPositions )
+ nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go
+ }
+ else
+ Refresh();
}
+
+ return nScrollInc;
}
// Adjust the scrollbars - new version.
-void wxScrolledWindow::AdjustScrollbars(void)
+void wxScrolledWindow::AdjustScrollbars()
{
- int w, h;
- GetClientSize(&w, &h);
-
- // Recalculate scroll bar range and position
- if (m_xScrollLines > 0)
- {
- int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
- int newRange = (int) ( ((nMaxWidth)/(float)m_xScrollPixelsPerLine) + 0.5 );
- if (newRange < 0)
- newRange = 0;
-
- m_xScrollPosition = wxMin(newRange, m_xScrollPosition);
+ int w, h;
+ GetClientSize(&w, &h);
+
+ int oldXScroll = m_xScrollPosition;
+ int oldYScroll = m_yScrollPosition;
+ if (m_xScrollLines > 0)
+ {
// Calculate page size i.e. number of scroll units you get on the
// current client window
- int noPagePositions = (int) ( (w/(float)m_xScrollPixelsPerLine) + 0.5 );
- if (noPagePositions < 1)
- noPagePositions = 1;
+ int noPagePositions = (int) ( (w/(float)m_xScrollPixelsPerLine) + 0.5 );
+ if (noPagePositions < 1) noPagePositions = 1;
- SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, newRange);
- SetScrollPageSize(wxHORIZONTAL, noPagePositions);
- }
- // Robert Roebling
- else
- {
- m_xScrollPosition = 0;
- SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE);
- }
-
- if (m_yScrollLines > 0)
- {
- int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
- int newRange = (int) ( ((nMaxHeight)/(float)m_yScrollPixelsPerLine) + 0.5 );
- if (newRange < 0)
- newRange = 0;
-
- m_yScrollPosition = wxMin(newRange, m_yScrollPosition);
+ // Correct position if greater than extent of canvas minus
+ // the visible portion of it or if below zero
+ m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition);
+ m_xScrollPosition = wxMax( 0, m_xScrollPosition );
+ SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines);
+ // The amount by which we scroll when paging
+ SetScrollPageSize(wxHORIZONTAL, noPagePositions);
+ }
+ else
+ {
+ m_xScrollPosition = 0;
+ SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE);
+ }
+
+ if (m_yScrollLines > 0)
+ {
// Calculate page size i.e. number of scroll units you get on the
// current client window
- int noPagePositions = (int) ( (h/(float)m_yScrollPixelsPerLine) + 0.5 );
- if (noPagePositions < 1)
- noPagePositions = 1;
+ int noPagePositions = (int) ( (h/(float)m_yScrollPixelsPerLine) + 0.5 );
+ if (noPagePositions < 1) noPagePositions = 1;
- SetScrollbar(wxVERTICAL, m_yScrollPosition, noPagePositions, newRange);
- SetScrollPageSize(wxVERTICAL, noPagePositions);
- }
- else
- {
- m_yScrollPosition = 0;
- SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE); // Robert Roebling
- }
-
+ // Correct position if greater than extent of canvas minus
+ // the visible portion of it or if below zero
+ m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
+ m_yScrollPosition = wxMax( 0, m_yScrollPosition );
+
+ SetScrollbar(wxVERTICAL, m_yScrollPosition, noPagePositions, m_yScrollLines);
+ // The amount by which we scroll when paging
+ SetScrollPageSize(wxVERTICAL, noPagePositions);
+ }
+ else
+ {
+ m_yScrollPosition = 0;
+ SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE);
+ }
+
+ if (oldXScroll != m_xScrollPosition)
+ {
+ if (m_xScrollingEnabled)
+ ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, (const wxRect *) NULL );
+ else
+ Refresh();
+ }
+
+ if (oldYScroll != m_yScrollPosition)
+ {
+ if (m_yScrollingEnabled)
+ ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), (const wxRect *) NULL );
+ else
+ Refresh();
+ }
}
// Default OnSize resets scrollbars, if any
void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
{
-#if USE_CONSTRAINTS
- if (GetAutoLayout())
- Layout();
+#if wxUSE_CONSTRAINTS
+ if (GetAutoLayout()) Layout();
#endif
- AdjustScrollbars();
+ AdjustScrollbars();
}
// This calls OnDraw, having adjusted the origin according to the current
// scroll position
void wxScrolledWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
{
- wxPaintDC dc(this);
- PrepareDC(dc);
+ wxPaintDC dc(this);
+ PrepareDC(dc);
- OnDraw(dc);
+ OnDraw(dc);
}
// Override this function if you don't want to have wxScrolledWindow
// automatically change the origin according to the scroll position.
void wxScrolledWindow::PrepareDC(wxDC& dc)
{
- dc.SetDeviceOrigin(- m_xScrollPosition * m_xScrollPixelsPerLine, - m_yScrollPosition * m_yScrollPixelsPerLine);
+ dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
+ -m_yScrollPosition * m_yScrollPixelsPerLine );
+ dc.SetUserScale( m_scaleX, m_scaleY );
}
#if WXWIN_COMPATIBILITY
*x_page = GetScrollPageSize(wxHORIZONTAL);
*y_page = GetScrollPageSize(wxVERTICAL);
}
-#endif
+
+void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
+{
+ if ( xx )
+ *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine);
+ if ( yy )
+ *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine);
+}
+#endif // WXWIN_COMPATIBILITY
void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
{
- *x_unit = m_xScrollPixelsPerLine;
- *y_unit = m_yScrollPixelsPerLine;
+ if ( x_unit )
+ *x_unit = m_xScrollPixelsPerLine;
+ if ( y_unit )
+ *y_unit = m_yScrollPixelsPerLine;
}
int wxScrolledWindow::GetScrollPageSize(int orient) const
/*
* Scroll to given position (scroll position, not pixel position)
*/
-void wxScrolledWindow::Scroll (int x_pos, int y_pos)
+void wxScrolledWindow::Scroll( int x_pos, int y_pos )
{
- int old_x, old_y;
- ViewStart (&old_x, &old_y);
- if (((x_pos == -1) || (x_pos == old_x)) && ((y_pos == -1) || (y_pos == old_y)))
- return;
+ if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
+ ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
+
+ int w, h;
+ GetClientSize(&w, &h);
- if (x_pos > -1)
+ if (x_pos != -1)
{
- m_xScrollPosition = x_pos;
- SetScrollPos (wxHORIZONTAL, x_pos, TRUE);
+ int old_x = m_xScrollPosition;
+ m_xScrollPosition = x_pos;
+
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
+ int noPagePositions = (int) ( (w/(float)m_xScrollPixelsPerLine) + 0.5 );
+ if (noPagePositions < 1) noPagePositions = 1;
+
+ // Correct position if greater than extent of canvas minus
+ // the visible portion of it or if below zero
+ m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition );
+ m_xScrollPosition = wxMax( 0, m_xScrollPosition );
+
+ SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+
+ ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
}
- if (y_pos > -1)
+ if (y_pos != -1)
{
- m_yScrollPosition = y_pos;
- SetScrollPos (wxVERTICAL, y_pos, TRUE);
+ int old_y = m_yScrollPosition;
+ m_yScrollPosition = y_pos;
+
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
+ int noPagePositions = (int) ( (h/(float)m_yScrollPixelsPerLine) + 0.5 );
+ if (noPagePositions < 1) noPagePositions = 1;
+
+ // Correct position if greater than extent of canvas minus
+ // the visible portion of it or if below zero
+ m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
+ m_yScrollPosition = wxMax( 0, m_yScrollPosition );
+
+ SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
+
+ ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
}
- Refresh();
-#ifdef __WINDOWS__
- ::UpdateWindow ((HWND) GetHWND());
+
+
+#ifdef __WXMSW__
+// ::UpdateWindow ((HWND) GetHWND());
+#else
+// Refresh();
#endif
}
void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
{
- m_xScrollingEnabled = x_scroll;
- m_yScrollingEnabled = y_scroll;
+ m_xScrollingEnabled = x_scroll;
+ m_yScrollingEnabled = y_scroll;
}
void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
{
- *x = m_xScrollPixelsPerLine * m_xScrollLines;
- *y = m_yScrollPixelsPerLine * m_yScrollLines;
+ if ( x )
+ *x = m_xScrollPixelsPerLine * m_xScrollLines;
+ if ( y )
+ *y = m_yScrollPixelsPerLine * m_yScrollLines;
}
// Where the current view starts from
void wxScrolledWindow::ViewStart (int *x, int *y) const
{
- *x = m_xScrollPosition;
- *y = m_yScrollPosition;
+ if ( x )
+ *x = m_xScrollPosition;
+ if ( y )
+ *y = m_yScrollPosition;
}
void wxScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
{
- *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
- *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
+ if ( xx )
+ *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
+ if ( yy )
+ *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
}
-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
+void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
{
- *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine);
- *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine);
+ if ( xx )
+ *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
+ if ( yy )
+ *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
}
-
-
projects / wxWidgets.git / blobdiff