X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e90c1d2a19361551eb07778280f22be3e759cf64..364f3b070071ee73e417a3770342d779774288e8:/src/msw/scrolbar.cpp diff --git a/src/msw/scrolbar.cpp b/src/msw/scrolbar.cpp index 2971968636..33b0a0c581 100644 --- a/src/msw/scrolbar.cpp +++ b/src/msw/scrolbar.cpp @@ -1,43 +1,31 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: scrolbar.cpp +// Name: src/msw/scrolbar.cpp // Purpose: wxScrollBar // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "scrolbar.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#ifndef WX_PRECOMP -#include "wx/defs.h" -#include "wx/utils.h" -#endif +#if wxUSE_SCROLLBAR #include "wx/scrolbar.h" -#include "wx/msw/private.h" - -#if !USE_SHARED_LIBRARY -IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl) -BEGIN_EVENT_TABLE(wxScrollBar, wxControl) -#if WXWIN_COMPATIBILITY - EVT_SCROLL(wxScrollBar::OnScroll) +#ifndef WX_PRECOMP + #include "wx/utils.h" + #include "wx/settings.h" #endif -END_EVENT_TABLE() -#endif +#include "wx/msw/private.h" // Scrollbar bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, @@ -46,67 +34,15 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, const wxValidator& validator, const wxString& name) { - if (!parent) - return FALSE; - parent->AddChild(this); - SetName(name); - SetValidator(validator); - - SetBackgroundColour(parent->GetBackgroundColour()) ; - SetForegroundColour(parent->GetForegroundColour()) ; - m_windowStyle = style; - - if ( id == -1 ) - m_windowId = (int)NewControlId(); - else - m_windowId = id; - - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; - - if (width == -1) - { - if (style & wxHORIZONTAL) - width = 140; - else - width = 14; - } - if (height == -1) - { - if (style & wxVERTICAL) - height = 140; - else - height = 14; - } - - // Now create scrollbar - DWORD _direction = (style & wxHORIZONTAL) ? - SBS_HORZ: SBS_VERT; - HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(style), T("SCROLLBAR"), T("scrollbar"), - _direction | WS_CHILD | WS_VISIBLE, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); - - m_pageSize = 1; - m_viewSize = 1; - m_objectSize = 1; - - ::SetScrollRange(scroll_bar, SB_CTL, 0, 1, FALSE); - ::SetScrollPos(scroll_bar, SB_CTL, 0, FALSE); - ShowWindow(scroll_bar, SW_SHOW); + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; - SetFont(parent->GetFont()); + if (!MSWCreateControl(wxT("ScrollBar"), wxEmptyString, pos, size)) + return false; - m_hWnd = (WXHWND)scroll_bar; + SetScrollbar(0, 1, 2, 1, false); - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND) scroll_bar); - - SetSize(x, y, width, height); - - return TRUE; + return true; } wxScrollBar::~wxScrollBar(void) @@ -114,236 +50,198 @@ wxScrollBar::~wxScrollBar(void) } bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam, - WXWORD pos, WXHWND control) + WXWORD WXUNUSED(pos), WXHWND WXUNUSED(control)) { - int position = ::GetScrollPos((HWND) control, SB_CTL); - int minPos, maxPos; - ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos); + // don't use pos parameter because it is limited to 16 bits, get the full + // 32 bit position from the control itself instead + WinStruct scrollInfo; + scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_TRACKPOS; + + if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) ) + { + wxLogLastError(wxT("GetScrollInfo")); + return false; + } + + int maxPos = scrollInfo.nMax; -#if defined(__WIN95__) // A page size greater than one has the effect of reducing the effective // range, therefore the range has already been boosted artificially - so // reduce it again. if ( m_pageSize > 1 ) maxPos -= (m_pageSize - 1); -#endif // __WIN95__ + int position = scrollInfo.nPos; wxEventType scrollEvent = wxEVT_NULL; - - int nScrollInc; switch ( wParam ) { case SB_TOP: - nScrollInc = maxPos - position; + position = 0; scrollEvent = wxEVT_SCROLL_TOP; break; case SB_BOTTOM: - nScrollInc = - position; + position = maxPos; scrollEvent = wxEVT_SCROLL_BOTTOM; break; case SB_LINEUP: - nScrollInc = -1; + position--; scrollEvent = wxEVT_SCROLL_LINEUP; break; case SB_LINEDOWN: - nScrollInc = 1; + position++; scrollEvent = wxEVT_SCROLL_LINEDOWN; break; case SB_PAGEUP: - nScrollInc = -GetPageSize(); + position -= GetPageSize(); scrollEvent = wxEVT_SCROLL_PAGEUP; break; case SB_PAGEDOWN: - nScrollInc = GetPageSize(); + position += GetPageSize(); scrollEvent = wxEVT_SCROLL_PAGEDOWN; break; - case SB_THUMBTRACK: case SB_THUMBPOSITION: - nScrollInc = pos - position; - scrollEvent = wxEVT_SCROLL_THUMBTRACK; + case SB_THUMBTRACK: + position = scrollInfo.nTrackPos; + scrollEvent = wParam == SB_THUMBPOSITION ? wxEVT_SCROLL_THUMBRELEASE + : wxEVT_SCROLL_THUMBTRACK; break; - default: - nScrollInc = 0; + case SB_ENDSCROLL: + scrollEvent = wxEVT_SCROLL_CHANGED; + break; } - if ( nScrollInc == 0 ) + if ( position != scrollInfo.nPos ) { - // no event to process, so don't process it - return FALSE; - } - - int new_pos = position + nScrollInc; + if ( position < 0 ) + position = 0; + if ( position > maxPos ) + position = maxPos; - if (new_pos < 0) - new_pos = 0; - if (new_pos > maxPos) - new_pos = maxPos; + SetThumbPosition(position); + } + else if ( scrollEvent != wxEVT_SCROLL_THUMBRELEASE && + scrollEvent != wxEVT_SCROLL_CHANGED ) + { + // don't process the event if there is no displacement, + // unless this is a thumb release or end scroll event. + return false; + } - SetThumbPosition(new_pos); wxScrollEvent event(scrollEvent, m_windowId); - event.SetPosition(new_pos); + event.SetOrientation(IsVertical() ? wxVERTICAL : wxHORIZONTAL); + event.SetPosition(position); event.SetEventObject( this ); - return GetEventHandler()->ProcessEvent(event); + return HandleWindowEvent(event); } void wxScrollBar::SetThumbPosition(int viewStart) { -#if defined(__WIN95__) - SCROLLINFO info; - info.cbSize = sizeof(SCROLLINFO); - info.nPage = 0; - info.nMin = 0; - info.nPos = viewStart; - info.fMask = SIF_POS ; - - ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE); -#else - ::SetScrollPos((HWND) GetHWND(), SB_CTL, viewStart, TRUE); -#endif + SCROLLINFO info; + info.cbSize = sizeof(SCROLLINFO); + info.nPage = 0; + info.nMin = 0; + info.nPos = viewStart; + info.fMask = SIF_POS ; + + ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE); } int wxScrollBar::GetThumbPosition(void) const { - return ::GetScrollPos((HWND)m_hWnd, SB_CTL); + WinStruct scrollInfo; + scrollInfo.fMask = SIF_POS; + + if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) ) + { + wxLogLastError(wxT("GetScrollInfo")); + } + return scrollInfo.nPos; } void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize, bool refresh) { - m_viewSize = pageSize; - m_pageSize = thumbSize; - m_objectSize = range; - - // The range (number of scroll steps) is the - // object length minus the page size. - int range1 = wxMax((m_objectSize - m_pageSize), 0) ; - -#if defined(__WIN95__) - // Try to adjust the range to cope with page size > 1 - // (see comment for SetPageLength) - if ( m_pageSize > 1 ) - { - range1 += (m_pageSize - 1); - } - - SCROLLINFO info; - info.cbSize = sizeof(SCROLLINFO); - info.nPage = m_pageSize; - info.nMin = 0; - info.nMax = range1; - info.nPos = position; - - info.fMask = SIF_PAGE | SIF_RANGE | SIF_POS; - - ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, refresh); -#else - ::SetScrollPos((HWND)m_hWnd, SB_CTL, position, TRUE); - ::SetScrollRange((HWND)m_hWnd, SB_CTL, 0, range1, TRUE); -#endif -} + m_viewSize = pageSize; + m_pageSize = thumbSize; + m_objectSize = range; + // The range (number of scroll steps) is the + // object length minus the page size. + int range1 = wxMax((m_objectSize - m_pageSize), 0) ; -/* From the WIN32 documentation: -In version 4.0 or later, the maximum value that a scroll bar can report -(that is, the maximum scrolling position) depends on the page size. -If the scroll bar has a page size greater than one, the maximum scrolling position -is less than the maximum range value. You can use the following formula to calculate -the maximum scrolling position: - -MaxScrollPos = MaxRangeValue - (PageSize - 1) -*/ + // Try to adjust the range to cope with page size > 1 + // (see comment for SetPageLength) + if ( m_pageSize > 1 ) + { + range1 += (m_pageSize - 1); + } -#if WXWIN_COMPATIBILITY -void wxScrollBar::SetPageSize(int pageLength) -{ - m_pageSize = pageLength; + SCROLLINFO info; + info.cbSize = sizeof(SCROLLINFO); + info.nPage = m_pageSize; + info.nMin = 0; + info.nMax = range1; + info.nPos = position; -#if defined(__WIN95__) - SCROLLINFO info; - info.cbSize = sizeof(SCROLLINFO); - info.nPage = pageLength; - info.fMask = SIF_PAGE ; + info.fMask = SIF_PAGE | SIF_RANGE | SIF_POS; - ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE); -#endif + ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, refresh); } -void wxScrollBar::SetObjectLength(int objectLength) +void wxScrollBar::Command(wxCommandEvent& event) { - m_objectSize = objectLength; - - // The range (number of scroll steps) is the - // object length minus the view size. - int range = wxMax((objectLength - m_viewSize), 0) ; - -#if defined(__WIN95__) - // Try to adjust the range to cope with page size > 1 - // (see comment for SetPageLength) - if ( m_pageSize > 1 ) - { - range += (m_pageSize - 1); - } - - SCROLLINFO info; - info.cbSize = sizeof(SCROLLINFO); - info.nPage = 0; - info.nMin = 0; - info.nMax = range; - info.nPos = 0; - info.fMask = SIF_RANGE ; - - ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE); -#else - ::SetScrollRange((HWND)m_hWnd, SB_CTL, 0, range, TRUE); -#endif + SetThumbPosition(event.GetInt()); + ProcessCommand(event); } -void wxScrollBar::SetViewLength(int viewLength) +wxSize wxScrollBar::DoGetBestSize() const { - m_viewSize = viewLength; -} + int w = 100; + int h = 100; -void wxScrollBar::GetValues(int *viewStart, int *viewLength, int *objectLength, - int *pageLength) const -{ - *viewStart = ::GetScrollPos((HWND)m_hWnd, SB_CTL); - *viewLength = m_viewSize; - *objectLength = m_objectSize; - *pageLength = m_pageSize; -} -#endif + if ( IsVertical() ) + { + w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X); + } + else + { + h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y); + } -WXHBRUSH wxScrollBar::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) -{ - return 0; + wxSize best(w, h); + CacheBestSize(best); + return best; } -void wxScrollBar::Command(wxCommandEvent& event) +WXDWORD wxScrollBar::MSWGetStyle(long style, WXDWORD *exstyle) const { - SetThumbPosition(event.m_commandInt); - ProcessCommand(event); + // we never have an external border + WXDWORD msStyle = wxControl::MSWGetStyle + ( + (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle + ); + + // SBS_HORZ is 0 anyhow, but do mention it explicitly for clarity + msStyle |= style & wxSB_HORIZONTAL ? SBS_HORZ : SBS_VERT; + + return msStyle; } -#if WXWIN_COMPATIBILITY -// Backward compatibility -void wxScrollBar::OnScroll(wxScrollEvent& event) +WXHBRUSH wxScrollBar::MSWControlColor(WXHDC pDC, WXHWND hWnd) { - wxEventType oldEvent = event.GetEventType(); - event.SetEventType( wxEVT_COMMAND_SCROLLBAR_UPDATED ); - if ( !GetEventHandler()->ProcessEvent(event) ) - { - event.SetEventType( oldEvent ); - if (!GetParent()->GetEventHandler()->ProcessEvent(event)) - event.Skip(); - } + // unless we have an explicitly set bg colour, use default (gradient under + // XP) brush instead of GetBackgroundColour() one as the base class would + // + // note that fg colour isn't used for a scrollbar + return UseBgCol() ? wxControl::MSWControlColor(pDC, hWnd) : NULL; } -#endif + +#endif // wxUSE_SCROLLBAR