X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ad81651f00edc6f489d9b6a0839d316a964fd521..973ac5bbb2ca39f0f3e21b85c1c130d2215f1552:/src/msw/scrolbar.cpp diff --git a/src/msw/scrolbar.cpp b/src/msw/scrolbar.cpp index 2072573681..cd25307611 100644 --- a/src/msw/scrolbar.cpp +++ b/src/msw/scrolbar.cpp @@ -1,28 +1,29 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: scrolbar.cpp +// Name: 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" + #pragma implementation "scrolbar.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_SCROLLBAR + #ifndef WX_PRECOMP -#include "wx/defs.h" -#include "wx/utils.h" + #include "wx/utils.h" #endif #include "wx/scrolbar.h" @@ -48,8 +49,10 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, return FALSE; parent->AddChild(this); SetName(name); +#if wxUSE_VALIDATORS SetValidator(validator); - +#endif // wxUSE_VALIDATORS + SetBackgroundColour(parent->GetBackgroundColour()) ; SetForegroundColour(parent->GetForegroundColour()) ; m_windowStyle = style; @@ -79,11 +82,16 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, height = 14; } + DWORD wstyle = WS_VISIBLE | WS_CHILD; + + if ( m_windowStyle & wxCLIP_SIBLINGS ) + wstyle |= WS_CLIPSIBLINGS; + // Now create scrollbar DWORD _direction = (style & wxHORIZONTAL) ? SBS_HORZ: SBS_VERT; HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(style), wxT("SCROLLBAR"), wxT("scrollbar"), - _direction | WS_CHILD | WS_VISIBLE, + _direction | wstyle, 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, wxGetInstance(), NULL); @@ -114,9 +122,40 @@ wxScrollBar::~wxScrollBar(void) bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam, WXWORD pos, WXHWND control) { - int position = ::GetScrollPos((HWND) control, SB_CTL); - int minPos, maxPos; - ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos); + // current and max positions + int position, + maxPos, trackPos = pos; + +#ifdef __WIN32__ + // when we're dragging the scrollbar we can't use pos parameter because it + // is limited to 16 bits + if ( wParam == SB_THUMBPOSITION || wParam == SB_THUMBTRACK ) + { + SCROLLINFO scrollInfo; + wxZeroMemory(scrollInfo); + scrollInfo.cbSize = sizeof(SCROLLINFO); + + // also get the range if we call GetScrollInfo() anyhow -- this is less + // expensive than call it once here and then call GetScrollRange() + // below + scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_TRACKPOS; + + if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) ) + { + wxLogLastError(_T("GetScrollInfo")); + } + + trackPos = scrollInfo.nTrackPos; + position = scrollInfo.nPos; + maxPos = scrollInfo.nMax; + } + else +#endif // Win32 + { + position = ::GetScrollPos((HWND) control, SB_CTL); + int minPos; + ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos); + } #if defined(__WIN95__) // A page size greater than one has the effect of reducing the effective @@ -131,13 +170,13 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam, int nScrollInc; switch ( wParam ) { - case SB_TOP: + case SB_BOTTOM: nScrollInc = maxPos - position; scrollEvent = wxEVT_SCROLL_TOP; break; - case SB_BOTTOM: - nScrollInc = - position; + case SB_TOP: + nScrollInc = -position; scrollEvent = wxEVT_SCROLL_BOTTOM; break; @@ -161,32 +200,47 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam, scrollEvent = wxEVT_SCROLL_PAGEDOWN; break; - case SB_THUMBTRACK: case SB_THUMBPOSITION: - nScrollInc = pos - position; + nScrollInc = trackPos - position; + scrollEvent = wxEVT_SCROLL_THUMBRELEASE; + break; + + case SB_THUMBTRACK: + nScrollInc = trackPos - position; scrollEvent = wxEVT_SCROLL_THUMBTRACK; break; + case SB_ENDSCROLL: + nScrollInc = 0; + scrollEvent = wxEVT_SCROLL_ENDSCROLL; + break; + default: nScrollInc = 0; } - if ( nScrollInc == 0 ) + if ( nScrollInc ) { - // no event to process, so don't process it - return FALSE; - } + position += nScrollInc; - 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_ENDSCROLL ) + { + // 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); @@ -195,16 +249,16 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam, 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); + 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); + ::SetScrollPos((HWND) GetHWND(), SB_CTL, viewStart, TRUE); #endif } @@ -255,8 +309,8 @@ In version 4.0 or later, the maximum value that a scroll bar can report 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) + +MaxScrollPos = MaxRangeValue - (PageSize - 1) */ #if WXWIN_COMPATIBILITY @@ -319,8 +373,8 @@ void wxScrollBar::GetValues(int *viewStart, int *viewLength, int *objectLength, } #endif -WXHBRUSH wxScrollBar::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +WXHBRUSH wxScrollBar::OnCtlColor(WXHDC WXUNUSED(pDC), WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor), + WXUINT WXUNUSED(message), WXWPARAM WXUNUSED(wParam), WXLPARAM WXUNUSED(lParam)) { return 0; } @@ -345,3 +399,5 @@ void wxScrollBar::OnScroll(wxScrollEvent& event) } } #endif + +#endif // wxUSE_SCROLLBAR