/////////////////////////////////////////////////////////////////////////////
-// Name: scrolwin.cpp
-// Purpose: wxScrolledWindow implementation
+// Name: generic/scrolwin.cpp
+// Purpose: wxGenericScrolledWindow implementation
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation
-#pragma implementation "scrolwin.h"
+ #pragma implementation "scrolwin.h"
+#endif
+
+#ifdef __VMS
+#define XtDisplay XTDISPLAY
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
-#include "wx/utils.h"
-#include "wx/dcclient.h"
-
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
+#include "wx/utils.h"
+#include "wx/dcclient.h"
+
#include "wx/generic/scrolwin.h"
#include "wx/panel.h"
-#if !USE_SHARED_LIBRARY
-BEGIN_EVENT_TABLE(wxScrolledWindow, wxPanel)
- EVT_SCROLLWIN(wxScrolledWindow::OnScroll)
- EVT_SIZE(wxScrolledWindow::OnSize)
- EVT_PAINT(wxScrolledWindow::OnPaint)
-END_EVENT_TABLE()
-
-IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxPanel)
-#endif
-
#ifdef __WXMSW__
-#include "windows.h"
+ #include "windows.h"
#endif
#ifdef __WXMOTIF__
#endif
#endif
-wxScrolledWindow::wxScrolledWindow()
+#ifndef __WXGTK__
+#include "wx/scrolwin.h"
+IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow)
+#endif
+
+// ----------------------------------------------------------------------------
+// event tables
+// ----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxGenericScrolledWindow, wxPanel)
+ EVT_SCROLLWIN(wxGenericScrolledWindow::OnScroll)
+ EVT_SIZE(wxGenericScrolledWindow::OnSize)
+ EVT_PAINT(wxGenericScrolledWindow::OnPaint)
+ EVT_CHAR(wxGenericScrolledWindow::OnChar)
+ EVT_MOUSEWHEEL(wxGenericScrolledWindow::OnMouseWheel)
+END_EVENT_TABLE()
+
+IMPLEMENT_DYNAMIC_CLASS(wxGenericScrolledWindow, wxPanel)
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxGenericScrolledWindow creation
+// ----------------------------------------------------------------------------
+
+wxGenericScrolledWindow::wxGenericScrolledWindow()
{
m_xScrollPixelsPerLine = 0;
m_yScrollPixelsPerLine = 0;
m_yScrollLinesPerPage = 0;
m_scaleX = 1.0;
m_scaleY = 1.0;
+ m_wheelRotation = 0;
+ m_targetWindow = (wxWindow*) NULL;
}
-bool wxScrolledWindow::Create(wxWindow *parent, wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name)
+bool wxGenericScrolledWindow::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name)
{
m_xScrollPixelsPerLine = 0;
m_yScrollPixelsPerLine = 0;
m_yScrollLinesPerPage = 0;
m_scaleX = 1.0;
m_scaleY = 1.0;
-
+ m_wheelRotation = 0;
+
m_targetWindow = this;
- return wxPanel::Create(parent, id, pos, size, style, name);
+ bool ok = wxPanel::Create(parent, id, pos, size, style, name);
+
+#ifdef __WXMSW__
+ // we need to process arrows ourselves for scrolling
+ m_lDlgCode |= DLGC_WANTARROWS;
+#endif // __WXMSW__
+
+ return ok;
}
+wxGenericScrolledWindow::~wxGenericScrolledWindow()
+{
+}
+
+// ----------------------------------------------------------------------------
+// setting scrolling parameters
+// ----------------------------------------------------------------------------
+
/*
* pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line)
* noUnitsX/noUnitsY: : no. units per scrollbar
*/
-void wxScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY,
- int noUnitsX, int noUnitsY,
- int xPos, int yPos, bool noRefresh )
+void wxGenericScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY,
+ int noUnitsX, int noUnitsY,
+ int xPos, int yPos, bool noRefresh )
{
+ int xpos, ypos;
+
+ CalcUnscrolledPosition(xPos, yPos, &xpos, &ypos);
bool do_refresh =
(
(noUnitsX != 0 && m_xScrollLines == 0) ||
- (noUnitsX < m_xScrollLines) ||
+ (noUnitsX < m_xScrollLines && xpos > pixelsPerUnitX*noUnitsX) ||
+
(noUnitsY != 0 && m_yScrollLines == 0) ||
- (noUnitsY < m_yScrollLines) ||
+ (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY*noUnitsY) ||
(xPos != m_xScrollPosition) ||
- (yPos != m_yScrollPosition) ||
- (pixelsPerUnitX != m_xScrollPixelsPerLine) ||
- (pixelsPerUnitY != m_yScrollPixelsPerLine)
+ (yPos != m_yScrollPosition)
+// (pixelsPerUnitX != m_xScrollPixelsPerLine) ||
+// (pixelsPerUnitY != m_yScrollPixelsPerLine)
);
-
+
m_xScrollPixelsPerLine = pixelsPerUnitX;
m_yScrollPixelsPerLine = pixelsPerUnitY;
m_xScrollPosition = xPos;
m_pixmapHeight = totalPixelHeight;
m_backingPixmap = (WXPixmap) XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)),
m_pixmapWidth, m_pixmapHeight, depth);
- }
+ }
}
-#endif
-
+#endif // Motif
+
AdjustScrollbars();
-
- if (do_refresh && !noRefresh)
- m_targetWindow->Refresh();
-
+
+ if (do_refresh && !noRefresh)
+ m_targetWindow->Refresh();
+
#ifdef __WXMSW__
- // Necessary?
- UpdateWindow ((HWND) m_targetWindow->GetHWND());
+ // GRG: if this turns out to be really necessary, we could
+ // at least move it to the above if { ... } so that it is
+ // only done if noRefresh = FALSE (the default). OTOH, if
+ // this doesn't break anything, which seems to be the
+ // case, we could just leave it out.
+
+ // Necessary?
+ // UpdateWindow ((HWND) m_targetWindow->GetHWND());
#endif
#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately() ;
+ m_targetWindow->MacUpdateImmediately() ;
#endif
}
-wxScrolledWindow::~wxScrolledWindow()
-{
-}
+// ----------------------------------------------------------------------------
+// target window handling
+// ----------------------------------------------------------------------------
-void wxScrolledWindow::SetTargetWindow( wxWindow *target )
+void wxGenericScrolledWindow::SetTargetWindow( wxWindow *target )
{
wxASSERT_MSG( target, wxT("target window must not be NULL") );
m_targetWindow = target;
}
-wxWindow *wxScrolledWindow::GetTargetWindow()
+wxWindow *wxGenericScrolledWindow::GetTargetWindow()
{
return m_targetWindow;
}
-void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
+// ----------------------------------------------------------------------------
+// scrolling implementation itself
+// ----------------------------------------------------------------------------
+
+void wxGenericScrolledWindow::OnScroll(wxScrollWinEvent& event)
{
int orient = event.GetOrientation();
{
m_yScrollPosition += nScrollInc;
}
-
+
if (orient == wxHORIZONTAL)
{
if (m_xScrollingEnabled)
m_targetWindow->ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL);
else
m_targetWindow->Refresh();
- }
+ }
#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately() ;
+ m_targetWindow->MacUpdateImmediately() ;
#endif
}
-int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
+int wxGenericScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
{
int pos = event.GetPosition();
int orient = event.GetOrientation();
int nScrollInc = 0;
- switch (event.GetEventType())
+ if (event.GetEventType() == wxEVT_SCROLLWIN_TOP)
{
- case wxEVT_SCROLLWIN_TOP:
- {
if (orient == wxHORIZONTAL)
nScrollInc = - m_xScrollPosition;
else
nScrollInc = - m_yScrollPosition;
- break;
- }
- case wxEVT_SCROLLWIN_BOTTOM:
- {
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
+ {
if (orient == wxHORIZONTAL)
nScrollInc = m_xScrollLines - m_xScrollPosition;
else
nScrollInc = m_yScrollLines - m_yScrollPosition;
- break;
- }
- case wxEVT_SCROLLWIN_LINEUP:
- {
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
+ {
nScrollInc = -1;
- break;
- }
- case wxEVT_SCROLLWIN_LINEDOWN:
- {
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN)
+ {
nScrollInc = 1;
- break;
- }
- case wxEVT_SCROLLWIN_PAGEUP:
- {
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEUP)
+ {
if (orient == wxHORIZONTAL)
nScrollInc = -GetScrollPageSize(wxHORIZONTAL);
else
nScrollInc = -GetScrollPageSize(wxVERTICAL);
- break;
- }
- case wxEVT_SCROLLWIN_PAGEDOWN:
- {
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEDOWN)
+ {
if (orient == wxHORIZONTAL)
nScrollInc = GetScrollPageSize(wxHORIZONTAL);
else
nScrollInc = GetScrollPageSize(wxVERTICAL);
- break;
- }
- case wxEVT_SCROLLWIN_THUMBTRACK:
- {
+ } else
+ if ((event.GetEventType() == wxEVT_SCROLLWIN_THUMBTRACK) ||
+ (event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE))
+ {
if (orient == wxHORIZONTAL)
nScrollInc = pos - m_xScrollPosition;
else
nScrollInc = pos - m_yScrollPosition;
- break;
- }
- default:
- {
- break;
- }
}
if (orient == wxHORIZONTAL)
{
- if (m_xScrollPixelsPerLine > 0)
+ if (m_xScrollPixelsPerLine > 0)
{
int w, h;
m_targetWindow->GetClientSize(&w, &h);
int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
int noPositions = (int) ( ((nMaxWidth - w)/(double)m_xScrollPixelsPerLine) + 0.5 );
if (noPositions < 0)
- noPositions = 0;
+ noPositions = 0;
if ( (m_xScrollPosition + nScrollInc) < 0 )
- nScrollInc = -m_xScrollPosition; // As -ve as we can go
+ 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
+ nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go
}
else
m_targetWindow->Refresh();
}
else
{
- if (m_yScrollPixelsPerLine > 0)
- {
+ if (m_yScrollPixelsPerLine > 0)
+ {
int w, h;
m_targetWindow->GetClientSize(&w, &h);
-
+
int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
int noPositions = (int) ( ((nMaxHeight - h)/(double)m_yScrollPixelsPerLine) + 0.5 );
if (noPositions < 0)
- noPositions = 0;
-
+ noPositions = 0;
+
if ( (m_yScrollPosition + nScrollInc) < 0 )
- nScrollInc = -m_yScrollPosition; // As -ve as we can go
+ 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
+ nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go
}
else
m_targetWindow->Refresh();
}
// Adjust the scrollbars - new version.
-void wxScrolledWindow::AdjustScrollbars()
+void wxGenericScrolledWindow::AdjustScrollbars()
{
int w, h;
m_targetWindow->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
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
int noPagePositions = (int) ( (w/(double)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);
+ // 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);
SetScrollPageSize(wxHORIZONTAL, noPagePositions);
}
else
- {
+ {
m_xScrollPosition = 0;
- SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE);
+ 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
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
int noPagePositions = (int) ( (h/(double)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
+ // the visible portion of it or if below zero
m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
m_yScrollPosition = wxMax( 0, m_yScrollPosition );
else
{
m_yScrollPosition = 0;
- SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE);
+ SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE);
}
-
+
if (oldXScroll != m_xScrollPosition)
{
if (m_xScrollingEnabled)
else
m_targetWindow->Refresh();
}
-
+
if (oldYScroll != m_yScrollPosition)
{
if (m_yScrollingEnabled)
}
}
-// Default OnSize resets scrollbars, if any
-void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
-{
-#if wxUSE_CONSTRAINTS
- if (GetAutoLayout()) Layout();
-#endif
-
- 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);
-
- OnDraw(dc);
-}
-
-// Override this function if you don't want to have wxScrolledWindow
+// Override this function if you don't want to have wxGenericScrolledWindow
// automatically change the origin according to the scroll position.
-void wxScrolledWindow::PrepareDC(wxDC& dc)
+void wxGenericScrolledWindow::PrepareDC(wxDC& dc)
{
- dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
+ dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
-m_yScrollPosition * m_yScrollPixelsPerLine );
dc.SetUserScale( m_scaleX, m_scaleY );
}
#if WXWIN_COMPATIBILITY
-void wxScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const
+void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const
{
*x_page = GetScrollPageSize(wxHORIZONTAL);
*y_page = GetScrollPageSize(wxVERTICAL);
}
-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
+void wxGenericScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
{
if ( xx )
*xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine);
}
#endif // WXWIN_COMPATIBILITY
-void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
+void wxGenericScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
{
if ( x_unit )
*x_unit = m_xScrollPixelsPerLine;
*y_unit = m_yScrollPixelsPerLine;
}
-int wxScrolledWindow::GetScrollPageSize(int orient) const
+int wxGenericScrolledWindow::GetScrollPageSize(int orient) const
{
if ( orient == wxHORIZONTAL )
return m_xScrollLinesPerPage;
return m_yScrollLinesPerPage;
}
-void wxScrolledWindow::SetScrollPageSize(int orient, int pageSize)
+void wxGenericScrolledWindow::SetScrollPageSize(int orient, int pageSize)
{
if ( orient == wxHORIZONTAL )
m_xScrollLinesPerPage = pageSize;
/*
* Scroll to given position (scroll position, not pixel position)
*/
-void wxScrolledWindow::Scroll( int x_pos, int y_pos )
+void wxGenericScrolledWindow::Scroll( int x_pos, int y_pos )
{
- if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
+ if (!m_targetWindow)
+ return;
+
+ if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
-
+
int w, h;
m_targetWindow->GetClientSize(&w, &h);
- if (x_pos != -1)
+ if ((x_pos != -1) && (m_xScrollPixelsPerLine))
{
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
+
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
int noPagePositions = (int) ( (w/(double)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
+ // the visible portion of it or if below zero
m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition );
m_xScrollPosition = wxMax( 0, m_xScrollPosition );
-
- m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
-
- m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+
+ if (old_x != m_xScrollPosition) {
+ m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+ m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+ }
}
- if (y_pos != -1)
+ if ((y_pos != -1) && (m_yScrollPixelsPerLine))
{
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
+
+ // Calculate page size i.e. number of scroll units you get on the
+ // current client window
int noPagePositions = (int) ( (h/(double)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
+ // the visible portion of it or if below zero
m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
m_yScrollPosition = wxMax( 0, m_yScrollPosition );
-
- m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
-
- m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+
+ if (old_y != m_yScrollPosition) {
+ m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
+ m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+ }
}
-
-
-#ifdef __WXMSW__
-// ::UpdateWindow ((HWND) GetHWND());
-#else
-// Refresh();
-#endif
+
#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately() ;
+ m_targetWindow->MacUpdateImmediately();
#endif
}
-void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
+void wxGenericScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
{
m_xScrollingEnabled = x_scroll;
m_yScrollingEnabled = y_scroll;
}
-void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
+void wxGenericScrolledWindow::GetVirtualSize (int *x, int *y) const
{
if ( x )
*x = m_xScrollPixelsPerLine * m_xScrollLines;
}
// Where the current view starts from
-void wxScrolledWindow::ViewStart (int *x, int *y) const
+void wxGenericScrolledWindow::GetViewStart (int *x, int *y) const
{
if ( x )
*x = m_xScrollPosition;
*y = m_yScrollPosition;
}
-void wxScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
+void wxGenericScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
{
if ( xx )
*xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
*yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
}
-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
+void wxGenericScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
{
if ( xx )
*xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
if ( yy )
*yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
}
+
+// ----------------------------------------------------------------------------
+// event handlers
+// ----------------------------------------------------------------------------
+
+// Default OnSize resets scrollbars, if any
+void wxGenericScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
+{
+#if wxUSE_CONSTRAINTS
+ if (GetAutoLayout())
+ Layout();
+#endif
+
+ AdjustScrollbars();
+}
+
+// This calls OnDraw, having adjusted the origin according to the current
+// scroll position
+void wxGenericScrolledWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
+{
+ wxPaintDC dc(this);
+ PrepareDC(dc);
+
+ OnDraw(dc);
+}
+
+// kbd handling: notice that we use OnChar() and not OnKeyDown() for
+// 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 wxGenericScrolledWindow::OnChar(wxKeyEvent& event)
+{
+ int stx, sty, // view origin
+ szx, szy, // view size (total)
+ clix, cliy; // view size (on screen)
+
+ ViewStart(&stx, &sty);
+ GetClientSize(&clix, &cliy);
+ GetVirtualSize(&szx, &szy);
+
+ if( m_xScrollPixelsPerLine )
+ {
+ clix /= m_xScrollPixelsPerLine;
+ szx /= m_xScrollPixelsPerLine;
+ }
+ else
+ {
+ clix = 0;
+ szx = -1;
+ }
+ if( m_yScrollPixelsPerLine )
+ {
+ cliy /= m_yScrollPixelsPerLine;
+ szy /= m_yScrollPixelsPerLine;
+ }
+ else
+ {
+ cliy = 0;
+ szy = -1;
+ }
+
+ int dsty;
+ switch ( event.KeyCode() )
+ {
+ case WXK_PAGEUP:
+ case WXK_PRIOR:
+ dsty = sty - (5 * cliy / 6);
+ Scroll(-1, (dsty == -1) ? 0 : dsty);
+ break;
+
+ case WXK_PAGEDOWN:
+ case WXK_NEXT:
+ Scroll(-1, sty + (5 * cliy / 6));
+ break;
+
+ case WXK_HOME:
+ Scroll(0, event.ControlDown() ? 0 : -1);
+ break;
+
+ case WXK_END:
+ Scroll(szx - clix, event.ControlDown() ? szy - cliy : -1);
+ break;
+
+ case WXK_UP:
+ Scroll(-1, sty - 1);
+ break;
+
+ case WXK_DOWN:
+ Scroll(-1, sty + 1);
+ break;
+
+ case WXK_LEFT:
+ Scroll(stx - 1, -1);
+ break;
+
+ case WXK_RIGHT:
+ Scroll(stx + 1, -1);
+ break;
+
+ default:
+ // not for us
+ event.Skip();
+ }
+}
+
+
+void wxGenericScrolledWindow::OnMouseWheel(wxMouseEvent& event)
+{
+ int lines;
+ int vsx, vsy;
+
+ m_wheelRotation += event.GetWheelRotation();
+ lines = m_wheelRotation / event.GetWheelDelta();
+ m_wheelRotation -= lines * event.GetWheelDelta();
+
+ if (lines != 0) {
+ lines *= event.GetLinesPerAction();
+ GetViewStart(&vsx, &vsy);
+ Scroll(-1, vsy - lines);
+ }
+}
+
+
+
+
projects / wxWidgets.git / blobdiff