X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/be9b0663d945b0c28978ab42de2966e1f3afda94..1b14412585d582acde42d422c8cd5d23d4daef14:/src/generic/scrlwing.cpp diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp index a1014097e3..c78ebc0fa7 100644 --- a/src/generic/scrlwing.cpp +++ b/src/generic/scrlwing.cpp @@ -6,7 +6,7 @@ // Ron Lee on 10.4.02: virtual size / auto scrollbars et al. // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -18,7 +18,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "genscrolwin.h" #endif @@ -40,8 +40,11 @@ #include "wx/scrolwin.h" #include "wx/panel.h" +#if wxUSE_TIMER #include "wx/timer.h" +#endif #include "wx/sizer.h" +#include "wx/recguard.h" #ifdef __WXMSW__ #include // for DLGC_WANTARROWS @@ -61,6 +64,11 @@ IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow) +/* + TODO PROPERTIES + style wxHSCROLL | wxVSCROLL +*/ + // ---------------------------------------------------------------------------- // wxScrollHelperEvtHandler: intercept the events from the window and forward // them to wxScrollHelper @@ -76,7 +84,7 @@ public: virtual bool ProcessEvent(wxEvent& event); - void ResetDrawnFlag() { m_hasDrawnWindow = FALSE; } + void ResetDrawnFlag() { m_hasDrawnWindow = false; } private: wxScrollHelper *m_scrollHelper; @@ -86,6 +94,7 @@ private: DECLARE_NO_COPY_CLASS(wxScrollHelperEvtHandler) }; +#if wxUSE_TIMER // ---------------------------------------------------------------------------- // wxAutoScrollTimer: the timer used to generate a stream of scroll events when // a captured mouse is held outside the window @@ -170,6 +179,7 @@ void wxAutoScrollTimer::Notify() } } } +#endif // ---------------------------------------------------------------------------- // wxScrollHelperEvtHandler @@ -195,7 +205,7 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) // anything in the window. We set it to true here but reset it to false in // wxScrolledWindow::OnPaint() handler (which wouldn't be called if the // user code defined OnPaint() in the derived class) - m_hasDrawnWindow = TRUE; + m_hasDrawnWindow = true; // pass it on to the real handler bool processed = wxEvtHandler::ProcessEvent(event); @@ -211,7 +221,7 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) { m_scrollHelper->HandleOnSize((wxSizeEvent &)event); - return TRUE; + return true; } if ( processed ) @@ -221,18 +231,18 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) // OnDraw() below (from HandleOnPaint) if ( m_hasDrawnWindow ) { - return TRUE; + return true; } } - // reset the skipped flag to FALSE as it might have been set to TRUE in + // reset the skipped flag to false as it might have been set to true in // ProcessEvent() above - event.Skip(FALSE); + event.Skip(false); if ( evType == wxEVT_PAINT ) { m_scrollHelper->HandleOnPaint((wxPaintEvent &)event); - return TRUE; + return true; } if ( evType == wxEVT_SCROLLWIN_TOP || @@ -268,7 +278,7 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) return !event.GetSkipped(); } - return FALSE; + return false; } // ---------------------------------------------------------------------------- @@ -287,7 +297,7 @@ wxScrollHelper::wxScrollHelper(wxWindow *win) m_yScrollLinesPerPage = 0; m_xScrollingEnabled = - m_yScrollingEnabled = TRUE; + m_yScrollingEnabled = true; m_scaleX = m_scaleY = 1.0; @@ -350,25 +360,30 @@ void wxScrollHelper::SetScrollbars(int pixelsPerUnitX, // For better backward compatibility we set persisting limits // here not just the size. It makes SetScrollbars 'sticky' // emulating the old non-autoscroll behaviour. - - m_targetWindow->SetVirtualSizeHints( w, h ); + // m_targetWindow->SetVirtualSizeHints( w, h ); // The above should arguably be deprecated, this however we still need. m_targetWindow->SetVirtualSize( w, h ); if (do_refresh && !noRefresh) - m_targetWindow->Refresh(TRUE, GetRect()); - - // TODO: check if we can use AdjustScrollbars always. -#ifdef __WXUNIVERSAL__ - AdjustScrollbars(); -#else - // This is also done by AdjustScrollbars, above -#ifdef __WXMAC__ - m_targetWindow->MacUpdateImmediately() ; -#endif -#endif + m_targetWindow->Refresh(true, GetScrollRect()); + +#ifndef __WXUNIVERSAL__ + // If the target is not the same as the window with the scrollbars, + // then we need to update the scrollbars here, since they won't have + // been updated by SetVirtualSize(). + if ( m_targetWindow != m_win ) +#endif // !__WXUNIVERSAL__ + { + AdjustScrollbars(); + } +#ifndef __WXUNIVERSAL__ + else + { + // otherwise this has been done by AdjustScrollbars, above + } +#endif // !__WXUNIVERSAL__ } // ---------------------------------------------------------------------------- @@ -460,7 +475,7 @@ void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event) m_win->SetScrollPos(wxVERTICAL, m_yScrollPosition); } - bool needsRefresh = FALSE; + bool needsRefresh = false; int dx = 0, dy = 0; if (orient == wxHORIZONTAL) @@ -471,7 +486,7 @@ void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event) } else { - needsRefresh = TRUE; + needsRefresh = true; } } else @@ -482,22 +497,18 @@ void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event) } else { - needsRefresh = TRUE; + needsRefresh = true; } } if ( needsRefresh ) { - m_targetWindow->Refresh(TRUE, GetRect()); + m_targetWindow->Refresh(true, GetScrollRect()); } else { - m_targetWindow->ScrollWindow(dx, dy, GetRect()); + m_targetWindow->ScrollWindow(dx, dy, GetScrollRect()); } - -#ifdef __WXMAC__ - m_targetWindow->MacUpdateImmediately() ; -#endif } int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) @@ -555,21 +566,23 @@ int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) { 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 + if ( m_xScrollPosition + nScrollInc < 0 ) + { + // As -ve as we can go + nScrollInc = -m_xScrollPosition; + } + else // check for the other bound + { + const int posMax = m_xScrollLines - m_xScrollLinesPerPage; + if ( m_xScrollPosition + nScrollInc > posMax ) + { + // As +ve as we can go + nScrollInc = posMax - m_xScrollPosition; + } + } } else - m_targetWindow->Refresh(TRUE, GetRect()); + m_targetWindow->Refresh(true, GetScrollRect()); } else { @@ -593,7 +606,7 @@ int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) else { // VZ: why do we do this? (FIXME) - m_targetWindow->Refresh(TRUE, GetRect()); + m_targetWindow->Refresh(true, GetScrollRect()); } } @@ -603,9 +616,18 @@ int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) // Adjust the scrollbars - new version. void wxScrollHelper::AdjustScrollbars() { -#ifdef __WXMAC__ - m_targetWindow->MacUpdateImmediately(); -#endif + static wxRecursionGuardFlag s_flagReentrancy; + wxRecursionGuard guard(s_flagReentrancy); + if ( guard.IsInside() ) + { + // don't reenter AdjustScrollbars() while another call to + // AdjustScrollbars() is in progress because this may lead to calling + // ScrollWindow() twice and this can really happen under MSW if + // SetScrollbar() call below adds or removes the scrollbar which + // changes the window size and hence results in another + // AdjustScrollbars() call + return; + } int w = 0, h = 0; int oldw, oldh; @@ -623,37 +645,59 @@ void wxScrollHelper::AdjustScrollbars() { GetTargetSize(&w, 0); - if (m_xScrollPixelsPerLine == 0) + // scroll lines per page: if 0, no scrolling is needed + int linesPerPage; + + if ( m_xScrollPixelsPerLine == 0 ) { + // scrolling is disabled m_xScrollLines = 0; m_xScrollPosition = 0; - m_win->SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE); + linesPerPage = 0; } - else + else // might need scrolling { - m_xScrollLines = m_targetWindow->GetVirtualSize().GetWidth() / m_xScrollPixelsPerLine; + // Round up integer division to catch any "leftover" client space. + const int wVirt = m_targetWindow->GetVirtualSize().GetWidth(); + m_xScrollLines = (wVirt + m_xScrollPixelsPerLine - 1) / m_xScrollPixelsPerLine; // 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_win->SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines); - // The amount by which we scroll when paging - SetScrollPageSize(wxHORIZONTAL, noPagePositions); + // current client window. + linesPerPage = w / m_xScrollPixelsPerLine; + + // Special case. When client and virtual size are very close but + // the client is big enough, kill scrollbar. + if ((linesPerPage < m_xScrollLines) && (w >= wVirt)) ++linesPerPage; + + if (linesPerPage >= m_xScrollLines) + { + // we're big enough to not need scrolling + linesPerPage = + m_xScrollLines = + m_xScrollPosition = 0; + } + else // we do need a scrollbar + { + if ( linesPerPage < 1 ) + linesPerPage = 1; + + // Correct position if greater than extent of canvas minus + // the visible portion of it or if below zero + const int posMax = m_xScrollLines - linesPerPage; + if ( m_xScrollPosition > posMax ) + m_xScrollPosition = posMax; + else if ( m_xScrollPosition < 0 ) + m_xScrollPosition = 0; + } } - GetTargetSize(0, &h); + m_win->SetScrollbar(wxHORIZONTAL, m_xScrollPosition, + linesPerPage, m_xScrollLines); - // scroll lines per page: if 0, no scrolling is needed - int linesPerPage; + // The amount by which we scroll when paging + SetScrollPageSize(wxHORIZONTAL, linesPerPage); + + GetTargetSize(0, &h); if ( m_yScrollPixelsPerLine == 0 ) { @@ -664,13 +708,19 @@ void wxScrollHelper::AdjustScrollbars() } else // might need scrolling { - int hVirt = m_targetWindow->GetVirtualSize().GetHeight(); - m_yScrollLines = hVirt / m_yScrollPixelsPerLine; + // Round up integer division to catch any "leftover" client space. + const int hVirt = m_targetWindow->GetVirtualSize().GetHeight(); + m_yScrollLines = ( hVirt + m_yScrollPixelsPerLine - 1 ) / m_yScrollPixelsPerLine; // Calculate page size i.e. number of scroll units you get on the - // current client window + // current client window. linesPerPage = h / m_yScrollPixelsPerLine; - if ( linesPerPage >= m_yScrollLines ) + + // Special case. When client and virtual size are very close but + // the client is big enough, kill scrollbar. + if ((linesPerPage < m_yScrollLines) && (h >= hVirt)) ++linesPerPage; + + if (linesPerPage >= m_yScrollLines) { // we're big enough to not need scrolling linesPerPage = @@ -704,7 +754,7 @@ void wxScrollHelper::AdjustScrollbars() oldh = h; GetTargetSize( &w, &h ); - } while ( w != oldw && h != oldh ); + } while ( w != oldw || h != oldh ); #ifdef __WXMOTIF__ // Sorry, some Motif-specific code to implement a backing pixmap @@ -743,23 +793,19 @@ void wxScrollHelper::AdjustScrollbars() { if (m_xScrollingEnabled) m_targetWindow->ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll - m_xScrollPosition), 0, - GetRect() ); + GetScrollRect() ); else - m_targetWindow->Refresh(TRUE, GetRect()); + m_targetWindow->Refresh(true, GetScrollRect()); } if (oldYScroll != m_yScrollPosition) { if (m_yScrollingEnabled) m_targetWindow->ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), - GetRect() ); + GetScrollRect() ); else - m_targetWindow->Refresh(TRUE, GetRect()); + m_targetWindow->Refresh(true, GetScrollRect()); } - -#ifdef __WXMAC__ - m_targetWindow->MacUpdateImmediately(); -#endif } void wxScrollHelper::DoPrepareDC(wxDC& dc) @@ -823,10 +869,6 @@ void wxScrollHelper::Scroll( int x_pos, int y_pos ) 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); @@ -848,7 +890,7 @@ void wxScrollHelper::Scroll( int x_pos, int y_pos ) if (old_x != m_xScrollPosition) { m_win->SetScrollPos( wxHORIZONTAL, m_xScrollPosition ); m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0, - GetRect() ); + GetScrollRect() ); } } if ((y_pos != -1) && (m_yScrollPixelsPerLine)) @@ -869,14 +911,9 @@ void wxScrollHelper::Scroll( int x_pos, int y_pos ) if (old_y != m_yScrollPosition) { m_win->SetScrollPos( wxVERTICAL, m_yScrollPosition ); m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine, - GetRect() ); + GetScrollRect() ); } } - -#ifdef __WXMAC__ - m_targetWindow->MacUpdateImmediately(); -#endif - } void wxScrollHelper::EnableScrolling (bool x_scroll, bool y_scroll) @@ -894,6 +931,15 @@ void wxScrollHelper::GetViewStart (int *x, int *y) const *y = m_yScrollPosition; } +#if WXWIN_COMPATIBILITY_2_2 + +void wxScrollHelper::ViewStart(int *x, int *y) const +{ + GetViewStart( x, y ); +} + +#endif // WXWIN_COMPATIBILITY_2_2 + void wxScrollHelper::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const { if ( xx ) @@ -1058,11 +1104,13 @@ bool wxScrollHelper::SendAutoScrollEvents(wxScrollWinEvent& event) const void wxScrollHelper::StopAutoScrolling() { +#if wxUSE_TIMER if ( m_timerAutoScroll ) { delete m_timerAutoScroll; m_timerAutoScroll = (wxTimer *)NULL; } +#endif } void wxScrollHelper::HandleOnMouseEnter(wxMouseEvent& event) @@ -1124,6 +1172,7 @@ void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event) if ( !m_targetWindow->HasScrollbar(orient) ) return; +#if wxUSE_TIMER delete m_timerAutoScroll; m_timerAutoScroll = new wxAutoScrollTimer ( @@ -1134,6 +1183,9 @@ void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event) orient ); m_timerAutoScroll->Start(50); // FIXME: make configurable +#else + wxUnusedVar(pos); +#endif } } @@ -1152,14 +1204,14 @@ void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event) newEvent.SetPosition(0); newEvent.SetOrientation(wxVERTICAL); - newEvent.m_eventObject = m_win; + newEvent.SetEventObject(m_win); if (event.IsPageScroll()) { if (lines > 0) - newEvent.m_eventType = wxEVT_SCROLLWIN_PAGEUP; + newEvent.SetEventType(wxEVT_SCROLLWIN_PAGEUP); else - newEvent.m_eventType = wxEVT_SCROLLWIN_PAGEDOWN; + newEvent.SetEventType(wxEVT_SCROLLWIN_PAGEDOWN); m_win->GetEventHandler()->ProcessEvent(newEvent); } @@ -1167,9 +1219,9 @@ void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event) { lines *= event.GetLinesPerAction(); if (lines > 0) - newEvent.m_eventType = wxEVT_SCROLLWIN_LINEUP; + newEvent.SetEventType(wxEVT_SCROLLWIN_LINEUP); else - newEvent.m_eventType = wxEVT_SCROLLWIN_LINEDOWN; + newEvent.SetEventType(wxEVT_SCROLLWIN_LINEDOWN); int times = abs(lines); for (; times > 0; times--) @@ -1199,7 +1251,7 @@ bool wxGenericScrolledWindow::Create(wxWindow *parent, { m_targetWindow = this; - bool ok = wxPanel::Create(parent, id, pos, size, style, name); + bool ok = wxPanel::Create(parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name); return ok; } @@ -1219,7 +1271,7 @@ bool wxGenericScrolledWindow::Layout() CalcScrolledPosition(0,0, &x,&y); GetVirtualSize(&w, &h); GetSizer()->SetDimension(x, y, w, h); - return TRUE; + return true; } // fall back to default for LayoutConstraints @@ -1231,10 +1283,8 @@ void wxGenericScrolledWindow::DoSetVirtualSize(int x, int y) wxPanel::DoSetVirtualSize( x, y ); AdjustScrollbars(); -#if wxUSE_CONSTRAINTS if (GetAutoLayout()) Layout(); -#endif } void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event) @@ -1247,42 +1297,26 @@ void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event) } #ifdef __WXMSW__ -long +WXLRESULT wxGenericScrolledWindow::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - long rc = wxPanel::MSWWindowProc(nMsg, wParam, lParam); + WXLRESULT rc = wxPanel::MSWWindowProc(nMsg, wParam, lParam); +#ifndef __WXWINCE__ // we need to process arrows ourselves for scrolling if ( nMsg == WM_GETDLGCODE ) { rc |= DLGC_WANTARROWS; } +#endif return rc; } #endif // __WXMSW__ -#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 - #endif // !wxGTK // vi:sts=4:sw=4:et