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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [tools/] [src/] [tools/] [configtool/] [standalone/] [wxwin/] [ecscrolwin.cpp] - Rev 438
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///////////////////////////////////////////////////////////////////////////// // Name: ecscrolwin.cpp // Purpose: ecScrolledWindow implementation // Author: Julian Smart // Modified by: // Created: 01/02/97 // RCS-ID: $Id: ecscrolwin.cpp,v 1.1.1.1 2004-02-14 13:28:51 phoenix Exp $ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #ifdef __GNUG__ #pragma implementation "ecscrolwin.h" #endif #ifdef __VMS #define XtDisplay XTDISPLAY #endif // Includes other headers for precompiled compilation #include "ecpch.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #include "wx/utils.h" #include "wx/dcclient.h" #include "wx/panel.h" #include "ecscrolwin.h" #ifdef __WXMSW__ #include "windows.h" #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 #if !ecUSE_OWN_SCROLLED_WINDOW IMPLEMENT_CLASS(ecScrolledWindow, wxScrolledWindow) #else // ---------------------------------------------------------------------------- // event tables // ---------------------------------------------------------------------------- BEGIN_EVENT_TABLE(ecScrolledWindow, wxPanel) EVT_SCROLLWIN(ecScrolledWindow::OnScroll) EVT_SIZE(ecScrolledWindow::OnSize) EVT_PAINT(ecScrolledWindow::OnPaint) EVT_CHAR(ecScrolledWindow::OnChar) END_EVENT_TABLE() IMPLEMENT_DYNAMIC_CLASS(ecScrolledWindow, wxPanel) // ============================================================================ // implementation // ============================================================================ // ---------------------------------------------------------------------------- // ecScrolledWindow creation // ---------------------------------------------------------------------------- ecScrolledWindow::ecScrolledWindow() { 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; m_targetWindow = (wxWindow*) NULL; } bool ecScrolledWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size, 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; m_scaleX = 1.0; m_scaleY = 1.0; m_targetWindow = this; bool ok = wxPanel::Create(parent, id, pos, size, style, name); #if defined(__WXMSW__) && (wxVERSION_NUMBER < 2302) // we need to process arrows ourselves for scrolling m_lDlgCode |= DLGC_WANTARROWS; #endif // __WXMSW__ return ok; } ecScrolledWindow::~ecScrolledWindow() { } // ---------------------------------------------------------------------------- // setting scrolling parameters // ---------------------------------------------------------------------------- /* * pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line) * noUnitsX/noUnitsY: : no. units per scrollbar */ void ecScrolledWindow::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) // (pixelsPerUnitX != m_xScrollPixelsPerLine) || // (pixelsPerUnitY != m_yScrollPixelsPerLine) ); 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); } } #endif // Motif AdjustScrollbars(); if (do_refresh && !noRefresh) m_targetWindow->Refresh(); #ifdef __WXMSW__ // 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() ; #endif } // ---------------------------------------------------------------------------- // target window handling // ---------------------------------------------------------------------------- void ecScrolledWindow::SetTargetWindow( wxWindow *target ) { wxASSERT_MSG( target, wxT("target window must not be NULL") ); m_targetWindow = target; } wxWindow *ecScrolledWindow::GetTargetWindow() { return m_targetWindow; } // ---------------------------------------------------------------------------- // scrolling implementation itself // ---------------------------------------------------------------------------- void ecScrolledWindow::OnScroll(wxScrollWinEvent& event) { int orient = event.GetOrientation(); int nScrollInc = CalcScrollInc(event); if (nScrollInc == 0) return; 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) m_targetWindow->ScrollWindow(-m_xScrollPixelsPerLine * nScrollInc, 0, (const wxRect *) NULL); else m_targetWindow->Refresh(); } else { if (m_yScrollingEnabled) m_targetWindow->ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL); else m_targetWindow->Refresh(); } #ifdef __WXMAC__ m_targetWindow->MacUpdateImmediately() ; #endif } int ecScrolledWindow::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; 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; 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(); } else { 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; 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(); } return nScrollInc; } // Adjust the scrollbars - new version. void ecScrolledWindow::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 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 ); 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/(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 ); 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) m_targetWindow->ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, (const wxRect *) NULL ); else m_targetWindow->Refresh(); } if (oldYScroll != m_yScrollPosition) { if (m_yScrollingEnabled) m_targetWindow->ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), (const wxRect *) NULL ); else m_targetWindow->Refresh(); } } // Override this function if you don't want to have ecScrolledWindow // automatically change the origin according to the scroll position. void ecScrolledWindow::PrepareDC(wxDC& dc) { dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine, -m_yScrollPosition * m_yScrollPixelsPerLine ); dc.SetUserScale( m_scaleX, m_scaleY ); } #if WXWIN_COMPATIBILITY void ecScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const { *x_page = GetScrollPageSize(wxHORIZONTAL); *y_page = GetScrollPageSize(wxVERTICAL); } void ecScrolledWindow::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 ecScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const { if ( x_unit ) *x_unit = m_xScrollPixelsPerLine; if ( y_unit ) *y_unit = m_yScrollPixelsPerLine; } int ecScrolledWindow::GetScrollPageSize(int orient) const { if ( orient == wxHORIZONTAL ) return m_xScrollLinesPerPage; else return m_yScrollLinesPerPage; } void ecScrolledWindow::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 ecScrolledWindow::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; int w, h; m_targetWindow->GetClientSize(&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, TRUE ); m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 ); } } 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, TRUE ); m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine ); } } #ifdef __WXMAC__ m_targetWindow->MacUpdateImmediately(); #endif } void ecScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll) { m_xScrollingEnabled = x_scroll; m_yScrollingEnabled = y_scroll; } void ecScrolledWindow::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 ecScrolledWindow::GetViewStart (int *x, int *y) const { if ( x ) *x = m_xScrollPosition; if ( y ) *y = m_yScrollPosition; } void ecScrolledWindow::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 ecScrolledWindow::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 ecScrolledWindow::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 ecScrolledWindow::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 ecScrolledWindow::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(); } } #endif // ecUSE_OWN_SCROLLED_WINDOW
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