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a4de7e8ccf4bf69d150c29c9a3d53e5754c8b8a9
wxWidgets/src/msw/scrolbar.cpp
Robin Dunn 1e63e75076 removed a SetFont(parent->GetFont()) 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27991 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2004-06-24 04:45:53 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: msw/scrolbar.cpp
// Purpose: wxScrollBar
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "scrolbar.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_SCROLLBAR
#ifndef WX_PRECOMP
#include "wx/utils.h"
#endif
#include "wx/scrolbar.h"
#include "wx/msw/private.h"
#include "wx/settings.h"
#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxScrollBarStyle )
wxBEGIN_FLAGS( wxScrollBarStyle )
// new style border flags, we put them first to
// use them for streaming out
wxFLAGS_MEMBER(wxBORDER_SIMPLE)
wxFLAGS_MEMBER(wxBORDER_SUNKEN)
wxFLAGS_MEMBER(wxBORDER_DOUBLE)
wxFLAGS_MEMBER(wxBORDER_RAISED)
wxFLAGS_MEMBER(wxBORDER_STATIC)
wxFLAGS_MEMBER(wxBORDER_NONE)
// old style border flags
wxFLAGS_MEMBER(wxSIMPLE_BORDER)
wxFLAGS_MEMBER(wxSUNKEN_BORDER)
wxFLAGS_MEMBER(wxDOUBLE_BORDER)
wxFLAGS_MEMBER(wxRAISED_BORDER)
wxFLAGS_MEMBER(wxSTATIC_BORDER)
wxFLAGS_MEMBER(wxBORDER)
// standard window styles
wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
wxFLAGS_MEMBER(wxCLIP_CHILDREN)
wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
wxFLAGS_MEMBER(wxWANTS_CHARS)
wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
wxFLAGS_MEMBER(wxVSCROLL)
wxFLAGS_MEMBER(wxHSCROLL)
wxFLAGS_MEMBER(wxSB_HORIZONTAL)
wxFLAGS_MEMBER(wxSB_VERTICAL)
wxEND_FLAGS( wxScrollBarStyle )
IMPLEMENT_DYNAMIC_CLASS_XTI(wxScrollBar, wxControl,"wx/scrolbar.h")
wxBEGIN_PROPERTIES_TABLE(wxScrollBar)
wxEVENT_RANGE_PROPERTY( Scroll , wxEVT_SCROLL_TOP , wxEVT_SCROLL_ENDSCROLL , wxScrollEvent )
wxPROPERTY( ThumbPosition , int , SetThumbPosition, GetThumbPosition, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY( Range , int , SetRange, GetRange, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY( ThumbSize , int , SetThumbSize, GetThumbSize, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY( PageSize , int , SetPageSize, GetPageSize, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY_FLAGS( WindowStyle , wxScrollBarStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()
wxBEGIN_HANDLERS_TABLE(wxScrollBar)
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_5( wxScrollBar , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
#else
IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
#endif
// Scrollbar
bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
const wxPoint& pos,
const wxSize& size, long style,
const wxValidator& wxVALIDATOR_PARAM(validator),
const wxString& name)
{
if (!parent)
return FALSE;
parent->AddChild(this);
SetName(name);
#if wxUSE_VALIDATORS
SetValidator(validator);
#endif // wxUSE_VALIDATORS
if ((style & wxBORDER_MASK) == wxBORDER_DEFAULT)
style |= wxNO_BORDER;
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;
}
WXDWORD exStyle = 0;
WXDWORD wstyle = MSWGetStyle(style, & exStyle) ;
// Now create scrollbar
DWORD _direction = (style & wxHORIZONTAL) ?
SBS_HORZ: SBS_VERT;
HWND scroll_bar = CreateWindowEx(exStyle, wxT("SCROLLBAR"), wxT("scrollbar"),
_direction | wstyle,
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);
m_hWnd = (WXHWND)scroll_bar;
// Subclass again for purposes of dialog editing mode
SubclassWin((WXHWND) scroll_bar);
SetSize(x, y, width, height);
return TRUE;
}
wxScrollBar::~wxScrollBar(void)
{
}
bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
WXWORD pos, WXHWND WXUNUSED(control))
{
// current and max positions
int position,
maxPos, trackPos = pos;
// when we're dragging the scrollbar we can't use pos parameter because it
// is limited to 16 bits
// JACS: now always using GetScrollInfo, since there's no reason
// not to
// 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;
}
#if 0
else
{
position = ::GetScrollPos((HWND) control, SB_CTL);
int minPos;
::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos);
}
#endif
#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__
wxEventType scrollEvent = wxEVT_NULL;
int nScrollInc;
switch ( wParam )
{
case SB_BOTTOM:
nScrollInc = maxPos - position;
scrollEvent = wxEVT_SCROLL_TOP;
break;
case SB_TOP:
nScrollInc = -position;
scrollEvent = wxEVT_SCROLL_BOTTOM;
break;
case SB_LINEUP:
nScrollInc = -1;
scrollEvent = wxEVT_SCROLL_LINEUP;
break;
case SB_LINEDOWN:
nScrollInc = 1;
scrollEvent = wxEVT_SCROLL_LINEDOWN;
break;
case SB_PAGEUP:
nScrollInc = -GetPageSize();
scrollEvent = wxEVT_SCROLL_PAGEUP;
break;
case SB_PAGEDOWN:
nScrollInc = GetPageSize();
scrollEvent = wxEVT_SCROLL_PAGEDOWN;
break;
case SB_THUMBPOSITION:
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 )
{
position += nScrollInc;
if ( position < 0 )
position = 0;
if ( position > maxPos )
position = 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;
}
wxScrollEvent event(scrollEvent, m_windowId);
event.SetOrientation(IsVertical() ? wxVERTICAL : wxHORIZONTAL);
event.SetPosition(position);
event.SetEventObject( this );
return GetEventHandler()->ProcessEvent(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
}
int wxScrollBar::GetThumbPosition(void) const
{
SCROLLINFO scrollInfo;
wxZeroMemory(scrollInfo);
scrollInfo.cbSize = sizeof(SCROLLINFO);
scrollInfo.fMask = SIF_POS;
if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) )
{
wxLogLastError(_T("GetScrollInfo"));
}
return scrollInfo.nPos;
// return ::GetScrollPos((HWND)m_hWnd, SB_CTL);
}
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
}
WXHBRUSH wxScrollBar::OnCtlColor(WXHDC WXUNUSED(pDC), WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
WXUINT WXUNUSED(message), WXWPARAM WXUNUSED(wParam), WXLPARAM WXUNUSED(lParam))
{
return 0;
}
void wxScrollBar::Command(wxCommandEvent& event)
{
SetThumbPosition(event.m_commandInt);
ProcessCommand(event);
}
wxSize wxScrollBar::DoGetBestSize() const
{
int w = 100;
int h = 100;
if ( IsVertical() )
{
w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
}
else
{
h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
}
return wxSize(w, h);
}
#endif // wxUSE_SCROLLBAR
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