+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: generic/scrolwin.cpp
-// Purpose: wxGenericScrolledWindow implementation
-// Author: Julian Smart
-// Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement
-// Created: 01/02/97
-// RCS-ID: $Id$
-// Copyright: (c) wxWindows team
-// Licence: wxWindows license
-/////////////////////////////////////////////////////////////////////////////
-
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
-#ifdef __GNUG__
- #pragma implementation "scrolwin.h"
-#endif
-
-#ifdef __VMS
-#define XtDisplay XTDISPLAY
-#endif
-
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
-
-#ifdef __BORLANDC__
- #pragma hdrstop
-#endif
-
-#include "wx/utils.h"
-#include "wx/dcclient.h"
-
-#include "wx/scrolwin.h"
-#include "wx/panel.h"
-#include "wx/timer.h"
-
-#ifdef __WXMSW__
- #include <windows.h> // for DLGC_WANTARROWS
-#endif
-
-#ifdef __WXMOTIF__
-// For wxRETAINED implementation
-#ifdef __VMS__ //VMS's Xm.h is not (yet) compatible with C++
- //This code switches off the compiler warnings
-# pragma message disable nosimpint
-#endif
-#include <Xm/Xm.h>
-#ifdef __VMS__
-# pragma message enable nosimpint
-#endif
-#endif
-
-#ifndef __WXGTK__
-IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow)
-#endif
-
-// ----------------------------------------------------------------------------
-// wxScrollHelperEvtHandler: intercept the events from the window and forward
-// them to wxScrollHelper
-// ----------------------------------------------------------------------------
-
-class wxScrollHelperEvtHandler : public wxEvtHandler
-{
-public:
- wxScrollHelperEvtHandler(wxScrollHelper *scrollHelper)
- {
- m_scrollHelper = scrollHelper;
- }
-
- virtual bool ProcessEvent(wxEvent& event);
-
-private:
- wxScrollHelper *m_scrollHelper;
-};
-
-// ----------------------------------------------------------------------------
-// wxAutoScrollTimer: the timer used to generate a stream of scroll events when
-// a captured mouse is held outside the window
-// ----------------------------------------------------------------------------
-
-class wxAutoScrollTimer : public wxTimer
-{
-public:
- wxAutoScrollTimer(wxWindow *winToScroll, wxScrollHelper *scroll,
- wxEventType eventTypeToSend,
- int pos, int orient);
-
- virtual void Notify();
-
-private:
- wxWindow *m_win;
- wxScrollHelper *m_scrollHelper;
- wxEventType m_eventType;
- int m_pos,
- m_orient;
-};
-
-// ============================================================================
-// implementation
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// wxAutoScrollTimer
-// ----------------------------------------------------------------------------
-
-wxAutoScrollTimer::wxAutoScrollTimer(wxWindow *winToScroll,
- wxScrollHelper *scroll,
- wxEventType eventTypeToSend,
- int pos, int orient)
-{
- m_win = winToScroll;
- m_scrollHelper = scroll;
- m_eventType = eventTypeToSend;
- m_pos = pos;
- m_orient = orient;
-}
-
-void wxAutoScrollTimer::Notify()
-{
- // only do all this as long as the window is capturing the mouse
- if ( wxWindow::GetCapture() != m_win )
- {
- Stop();
- }
- else // we still capture the mouse, continue generating events
- {
- // first scroll the window if we are allowed to do it
- wxScrollWinEvent event1(m_eventType, m_pos, m_orient);
- event1.SetEventObject(m_win);
- if ( m_scrollHelper->SendAutoScrollEvents(event1) &&
- m_win->GetEventHandler()->ProcessEvent(event1) )
- {
- // and then send a pseudo mouse-move event to refresh the selection
- wxMouseEvent event2(wxEVT_MOTION);
- wxGetMousePosition(&event2.m_x, &event2.m_y);
-
- // the mouse event coordinates should be client, not screen as
- // returned by wxGetMousePosition
- wxWindow *parentTop = m_win;
- while ( parentTop->GetParent() )
- parentTop = parentTop->GetParent();
- wxPoint ptOrig = parentTop->GetPosition();
- event2.m_x -= ptOrig.x;
- event2.m_y -= ptOrig.y;
-
- event2.SetEventObject(m_win);
-
- // FIXME: we don't fill in the other members - ok?
-
- m_win->GetEventHandler()->ProcessEvent(event2);
- }
- else // can't scroll further, stop
- {
- Stop();
- }
- }
-}
-
-// ----------------------------------------------------------------------------
-// wxScrollHelperEvtHandler
-// ----------------------------------------------------------------------------
-
-bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
-{
- if ( wxEvtHandler::ProcessEvent(event) )
- return TRUE;
-
- // reset the skipped flag to FALSE as it might have been set to TRUE in
- // ProcessEvent() above
- event.Skip(FALSE);
-
- wxEventType evType = event.GetEventType();
-
- if ( evType == wxEVT_PAINT )
- {
- m_scrollHelper->HandleOnPaint((wxPaintEvent &)event);
- return TRUE;
- }
-
- if ( evType == wxEVT_SCROLLWIN_TOP ||
- evType == wxEVT_SCROLLWIN_BOTTOM ||
- evType == wxEVT_SCROLLWIN_LINEUP ||
- evType == wxEVT_SCROLLWIN_LINEDOWN ||
- evType == wxEVT_SCROLLWIN_PAGEUP ||
- evType == wxEVT_SCROLLWIN_PAGEDOWN ||
- evType == wxEVT_SCROLLWIN_THUMBTRACK ||
- evType == wxEVT_SCROLLWIN_THUMBRELEASE )
- {
- m_scrollHelper->HandleOnScroll((wxScrollWinEvent &)event);
- return !event.GetSkipped();
- }
-
- if ( evType == wxEVT_ENTER_WINDOW )
- {
- m_scrollHelper->HandleOnMouseEnter((wxMouseEvent &)event);
- }
- else if ( evType == wxEVT_LEAVE_WINDOW )
- {
- m_scrollHelper->HandleOnMouseLeave((wxMouseEvent &)event);
- }
-#if wxUSE_MOUSEWHEEL
- else if ( evType == wxEVT_MOUSEWHEEL )
- {
- m_scrollHelper->HandleOnMouseWheel((wxMouseEvent &)event);
- }
-#endif // wxUSE_MOUSEWHEEL
- else if ( evType == wxEVT_SIZE )
- {
- m_scrollHelper->HandleOnSize((wxSizeEvent &)event);
- }
- else if ( evType == wxEVT_CHAR )
- {
- m_scrollHelper->HandleOnChar((wxKeyEvent &)event);
- return !event.GetSkipped();
- }
-
- return FALSE;
-}
-
-// ----------------------------------------------------------------------------
-// wxScrollHelper construction
-// ----------------------------------------------------------------------------
-
-wxScrollHelper::wxScrollHelper(wxWindow *win)
-{
- m_xScrollPixelsPerLine =
- m_yScrollPixelsPerLine =
- m_xScrollPosition =
- m_yScrollPosition =
- m_xScrollLines =
- m_yScrollLines =
- m_xScrollLinesPerPage =
- m_yScrollLinesPerPage = 0;
-
- m_xScrollingEnabled =
- m_yScrollingEnabled = TRUE;
-
- m_scaleX =
- m_scaleY = 1.0;
-#if wxUSE_MOUSEWHEEL
- m_wheelRotation = 0;
-#endif
-
- m_win =
- m_targetWindow = (wxWindow *)NULL;
-
- m_timerAutoScroll = (wxTimer *)NULL;
-
- if ( win )
- SetWindow(win);
-}
-
-void wxScrollHelper::SetWindow(wxWindow *win)
-{
- wxCHECK_RET( win, _T("wxScrollHelper needs a window to scroll") );
-
- m_targetWindow = m_win = win;
-
- // install the event handler which will intercept the events we're
- // interested in
- m_win->PushEventHandler(new wxScrollHelperEvtHandler(this));
-}
-
-wxScrollHelper::~wxScrollHelper()
-{
- StopAutoScrolling();
-
- if ( m_targetWindow )
- m_targetWindow->PopEventHandler(TRUE /* do delete it */);
-}
-
-// ----------------------------------------------------------------------------
-// setting scrolling parameters
-// ----------------------------------------------------------------------------
-
-void wxScrollHelper::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 && xpos > pixelsPerUnitX*noUnitsX) ||
-
- (noUnitsY != 0 && m_yScrollLines == 0) ||
- (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY*noUnitsY) ||
- (xPos != m_xScrollPosition) ||
- (yPos != m_yScrollPosition)
- );
-
- 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_targetWindow->GetWindowStyle() & wxRETAINED )
- {
- Display* dpy = XtDisplay((Widget)m_targetWindow->GetMainWidget());
-
- int totalPixelWidth = m_xScrollLines * m_xScrollPixelsPerLine;
- int totalPixelHeight = m_yScrollLines * m_yScrollPixelsPerLine;
- if (m_targetWindow->m_backingPixmap &&
- !((m_targetWindow->m_pixmapWidth == totalPixelWidth) &&
- (m_targetWindow->m_pixmapHeight == totalPixelHeight)))
- {
- XFreePixmap (dpy, (Pixmap) m_targetWindow->m_backingPixmap);
- m_targetWindow->m_backingPixmap = (WXPixmap) 0;
- }
-
- if (!m_targetWindow->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);
- }
-
- }
-#endif // Motif
-
- AdjustScrollbars();
-
- if (do_refresh && !noRefresh)
- m_targetWindow->Refresh(TRUE, GetRect());
-
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately() ;
-#endif
-}
-
-// ----------------------------------------------------------------------------
-// target window handling
-// ----------------------------------------------------------------------------
-
-void wxScrollHelper::SetTargetWindow( wxWindow *target )
-{
- wxASSERT_MSG( target, wxT("target window must not be NULL") );
- m_targetWindow = target;
-}
-
-wxWindow *wxScrollHelper::GetTargetWindow() const
-{
- return m_targetWindow;
-}
-
-// ----------------------------------------------------------------------------
-// scrolling implementation itself
-// ----------------------------------------------------------------------------
-
-void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event)
-{
- int nScrollInc = CalcScrollInc(event);
- if ( nScrollInc == 0 )
- {
- // can't scroll further
- event.Skip();
-
- return;
- }
-
- int orient = event.GetOrientation();
- if (orient == wxHORIZONTAL)
- {
- m_xScrollPosition += nScrollInc;
- m_targetWindow->SetScrollPos(wxHORIZONTAL, m_xScrollPosition, FALSE);
- }
- else
- {
- m_yScrollPosition += nScrollInc;
- m_targetWindow->SetScrollPos(wxVERTICAL, m_yScrollPosition, FALSE);
- }
-
- bool needsRefresh = FALSE;
- int dx = 0,
- dy = 0;
- if (orient == wxHORIZONTAL)
- {
- if ( m_xScrollingEnabled )
- {
- dx = -m_xScrollPixelsPerLine * nScrollInc;
- }
- else
- {
- needsRefresh = TRUE;
- }
- }
- else
- {
- if ( m_yScrollingEnabled )
- {
- dy = -m_yScrollPixelsPerLine * nScrollInc;
- }
- else
- {
- needsRefresh = TRUE;
- }
- }
-
- if ( needsRefresh )
- {
- m_targetWindow->Refresh(TRUE, GetRect());
- }
- else
- {
- m_targetWindow->ScrollWindow(dx, dy, GetRect());
- }
-
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately() ;
-#endif
-}
-
-int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event)
-{
- int pos = event.GetPosition();
- int orient = event.GetOrientation();
-
- int nScrollInc = 0;
- if (event.GetEventType() == wxEVT_SCROLLWIN_TOP)
- {
- if (orient == wxHORIZONTAL)
- nScrollInc = - m_xScrollPosition;
- else
- nScrollInc = - m_yScrollPosition;
- } else
- if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
- {
- if (orient == wxHORIZONTAL)
- nScrollInc = m_xScrollLines - m_xScrollPosition;
- else
- nScrollInc = m_yScrollLines - m_yScrollPosition;
- } else
- if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
- {
- nScrollInc = -1;
- } else
- if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN)
- {
- nScrollInc = 1;
- } else
- if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEUP)
- {
- if (orient == wxHORIZONTAL)
- nScrollInc = -GetScrollPageSize(wxHORIZONTAL);
- else
- nScrollInc = -GetScrollPageSize(wxVERTICAL);
- } else
- if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEDOWN)
- {
- if (orient == wxHORIZONTAL)
- nScrollInc = GetScrollPageSize(wxHORIZONTAL);
- else
- nScrollInc = GetScrollPageSize(wxVERTICAL);
- } else
- if ((event.GetEventType() == wxEVT_SCROLLWIN_THUMBTRACK) ||
- (event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE))
- {
- if (orient == wxHORIZONTAL)
- nScrollInc = pos - m_xScrollPosition;
- else
- nScrollInc = pos - m_yScrollPosition;
- }
-
- if (orient == wxHORIZONTAL)
- {
- if (m_xScrollPixelsPerLine > 0)
- {
- int w, h;
- GetTargetSize(&w, &h);
-
- int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxWidth - w)/(double)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
- m_targetWindow->Refresh(TRUE, GetRect());
- }
- else
- {
- if (m_yScrollPixelsPerLine > 0)
- {
- int w, h;
- GetTargetSize(&w, &h);
-
- int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxHeight - h)/(double)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
- m_targetWindow->Refresh(TRUE, GetRect());
- }
-
- return nScrollInc;
-}
-
-// Adjust the scrollbars - new version.
-void wxScrollHelper::AdjustScrollbars()
-{
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately();
-#endif
-
- int w, h;
- GetTargetSize(&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/(double)m_xScrollPixelsPerLine) + 0.5 );
- if (noPagePositions < 1) noPagePositions = 1;
- if ( noPagePositions > m_xScrollLines )
- noPagePositions = m_xScrollLines;
-
- // 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 );
-
- m_targetWindow->SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines);
- // The amount by which we scroll when paging
- SetScrollPageSize(wxHORIZONTAL, noPagePositions);
- }
- else
- {
- m_xScrollPosition = 0;
- m_targetWindow->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/(double)m_yScrollPixelsPerLine) + 0.5 );
- if (noPagePositions < 1) noPagePositions = 1;
- if ( noPagePositions > m_yScrollLines )
- noPagePositions = m_yScrollLines;
-
- // 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 );
-
- m_targetWindow->SetScrollbar(wxVERTICAL, m_yScrollPosition, noPagePositions, m_yScrollLines);
- // The amount by which we scroll when paging
- SetScrollPageSize(wxVERTICAL, noPagePositions);
- }
- else
- {
- m_yScrollPosition = 0;
- m_targetWindow->SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE);
- }
-
- if (oldXScroll != m_xScrollPosition)
- {
- if (m_xScrollingEnabled)
- m_targetWindow->ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0,
- GetRect() );
- else
- m_targetWindow->Refresh(TRUE, GetRect());
- }
-
- if (oldYScroll != m_yScrollPosition)
- {
- if (m_yScrollingEnabled)
- m_targetWindow->ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition),
- GetRect() );
- else
- m_targetWindow->Refresh(TRUE, GetRect());
- }
-
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately();
-#endif
-}
-
-void wxScrollHelper::DoPrepareDC(wxDC& dc)
-{
- wxPoint pt = dc.GetDeviceOrigin();
- dc.SetDeviceOrigin( pt.x - m_xScrollPosition * m_xScrollPixelsPerLine,
- pt.y - m_yScrollPosition * m_yScrollPixelsPerLine );
- dc.SetUserScale( m_scaleX, m_scaleY );
-}
-
-void wxScrollHelper::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
-{
- if ( x_unit )
- *x_unit = m_xScrollPixelsPerLine;
- if ( y_unit )
- *y_unit = m_yScrollPixelsPerLine;
-}
-
-int wxScrollHelper::GetScrollPageSize(int orient) const
-{
- if ( orient == wxHORIZONTAL )
- return m_xScrollLinesPerPage;
- else
- return m_yScrollLinesPerPage;
-}
-
-void wxScrollHelper::SetScrollPageSize(int orient, int pageSize)
-{
- if ( orient == wxHORIZONTAL )
- m_xScrollLinesPerPage = pageSize;
- else
- m_yScrollLinesPerPage = pageSize;
-}
-
-/*
- * Scroll to given position (scroll position, not pixel position)
- */
-void wxScrollHelper::Scroll( int x_pos, int y_pos )
-{
- if (!m_targetWindow)
- return;
-
- if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
- ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
-
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately();
-#endif
-
- int w, h;
- GetTargetSize(&w, &h);
-
- 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
- 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 );
- m_xScrollPosition = wxMax( 0, m_xScrollPosition );
-
- if (old_x != m_xScrollPosition) {
- m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, FALSE );
- m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0,
- GetRect() );
- }
- }
- 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
- 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
- m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
- m_yScrollPosition = wxMax( 0, m_yScrollPosition );
-
- if (old_y != m_yScrollPosition) {
- m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, FALSE );
- m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine,
- GetRect() );
- }
- }
-
-#ifdef __WXMAC__
- m_targetWindow->MacUpdateImmediately();
-#endif
-
-}
-
-void wxScrollHelper::EnableScrolling (bool x_scroll, bool y_scroll)
-{
- m_xScrollingEnabled = x_scroll;
- m_yScrollingEnabled = y_scroll;
-}
-
-void wxScrollHelper::GetVirtualSize (int *x, int *y) const
-{
- if ( x )
- *x = m_xScrollPixelsPerLine * m_xScrollLines;
- if ( y )
- *y = m_yScrollPixelsPerLine * m_yScrollLines;
-}
-
-// Where the current view starts from
-void wxScrollHelper::GetViewStart (int *x, int *y) const
-{
- if ( x )
- *x = m_xScrollPosition;
- if ( y )
- *y = m_yScrollPosition;
-}
-
-void wxScrollHelper::CalcScrolledPosition(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;
-}
-
-void wxScrollHelper::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 wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event))
-{
-#if wxUSE_CONSTRAINTS
- if ( m_targetWindow->GetAutoLayout() )
- m_targetWindow->Layout();
-#endif
-
- AdjustScrollbars();
-}
-
-// This calls OnDraw, having adjusted the origin according to the current
-// scroll position
-void wxScrollHelper::HandleOnPaint(wxPaintEvent& WXUNUSED(event))
-{
- wxPaintDC dc(m_targetWindow);
- DoPrepareDC(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 wxScrollHelper::HandleOnChar(wxKeyEvent& event)
-{
- int stx, sty, // view origin
- szx, szy, // view size (total)
- clix, cliy; // view size (on screen)
-
- GetViewStart(&stx, &sty);
- GetTargetSize(&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();
- }
-}
-
-// ----------------------------------------------------------------------------
-// autoscroll stuff: these functions deal with sending fake scroll events when
-// a captured mouse is being held outside the window
-// ----------------------------------------------------------------------------
-
-bool wxScrollHelper::SendAutoScrollEvents(wxScrollWinEvent& event) const
-{
- // only send the event if the window is scrollable in this direction
- wxWindow *win = (wxWindow *)event.GetEventObject();
- return win->HasScrollbar(event.GetOrientation());
-}
-
-void wxScrollHelper::StopAutoScrolling()
-{
- if ( m_timerAutoScroll )
- {
- delete m_timerAutoScroll;
- m_timerAutoScroll = (wxTimer *)NULL;
- }
-}
-
-void wxScrollHelper::HandleOnMouseEnter(wxMouseEvent& event)
-{
- StopAutoScrolling();
-
- event.Skip();
-}
-
-void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event)
-{
- // don't prevent the usual processing of the event from taking place
- event.Skip();
-
- // when a captured mouse leave a scrolled window we start generate
- // scrolling events to allow, for example, extending selection beyond the
- // visible area in some controls
- if ( wxWindow::GetCapture() == m_targetWindow )
- {
- // where is the mouse leaving?
- int pos, orient;
- wxPoint pt = event.GetPosition();
- if ( pt.x < 0 )
- {
- orient = wxHORIZONTAL;
- pos = 0;
- }
- else if ( pt.y < 0 )
- {
- orient = wxVERTICAL;
- pos = 0;
- }
- else // we're lower or to the right of the window
- {
- wxSize size = m_targetWindow->GetClientSize();
- if ( pt.x > size.x )
- {
- orient = wxHORIZONTAL;
- pos = m_xScrollLines;
- }
- else if ( pt.y > size.y )
- {
- orient = wxVERTICAL;
- pos = m_yScrollLines;
- }
- else // this should be impossible
- {
- // but seems to happen sometimes under wxMSW - maybe it's a bug
- // there but for now just ignore it
-
- //wxFAIL_MSG( _T("can't understand where has mouse gone") );
-
- return;
- }
- }
-
- // only start the auto scroll timer if the window can be scrolled in
- // this direction
- if ( !m_targetWindow->HasScrollbar(orient) )
- return;
-
- delete m_timerAutoScroll;
- m_timerAutoScroll = new wxAutoScrollTimer
- (
- m_targetWindow, this,
- pos == 0 ? wxEVT_SCROLLWIN_LINEUP
- : wxEVT_SCROLLWIN_LINEDOWN,
- pos,
- orient
- );
- m_timerAutoScroll->Start(50); // FIXME: make configurable
- }
-}
-
-#if wxUSE_MOUSEWHEEL
-
-void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event)
-{
- m_wheelRotation += event.GetWheelRotation();
- int lines = m_wheelRotation / event.GetWheelDelta();
- m_wheelRotation -= lines * event.GetWheelDelta();
-
- if (lines != 0)
- {
- lines *= event.GetLinesPerAction();
-
- int vsx, vsy;
- GetViewStart(&vsx, &vsy);
- Scroll(-1, vsy - lines);
- }
-}
-
-#endif // wxUSE_MOUSEWHEEL
-
-// ----------------------------------------------------------------------------
-// wxGenericScrolledWindow implementation
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxGenericScrolledWindow, wxPanel)
-
-bool wxGenericScrolledWindow::Create(wxWindow *parent,
- wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name)
-{
- m_targetWindow = this;
-
- 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()
-{
-}
-
-#if WXWIN_COMPATIBILITY
-void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const
-{
- *x_page = GetScrollPageSize(wxHORIZONTAL);
- *y_page = GetScrollPageSize(wxVERTICAL);
-}
-
-void wxGenericScrolledWindow::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
-
projects / wxWidgets.git / blobdiff