Leaked source code of windows server 2003
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// WTL Version 3.1
// Copyright (C) 1997-2000 Microsoft Corporation
// All rights reserved.
//
// This file is a part of Windows Template Library.
// The code and information is provided "as-is" without
// warranty of any kind, either expressed or implied.
#ifndef __ATLSCRL_H__
#define __ATLSCRL_H__
#pragma once
#ifndef __cplusplus
#error ATL requires C++ compilation (use a .cpp suffix)
#endif
#ifndef __ATLAPP_H__
#error atlscrl.h requires atlapp.h to be included first
#endif
#ifndef __ATLWIN_H__
#error atlscrl.h requires atlwin.h to be included first
#endif
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
#include <zmouse.h>
#endif //!((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
namespace WTL
{
/////////////////////////////////////////////////////////////////////////////
// Forward declarations
template <class T> class CScrollImpl;
template <class T, class TBase = CWindow, class TWinTraits = CControlWinTraits> class CScrollWindowImpl;
template <class T> class CMapScrollImpl;
template <class T, class TBase = CWindow, class TWinTraits = CControlWinTraits> class CMapScrollWindowImpl;
#if defined(__ATLCTRLS_H__) && (_WIN32_IE >= 0x0400)
template <class TBase = CWindow> class CFSBWindowT;
#endif //defined(__ATLCTRLS_H__) && (_WIN32_IE >= 0x0400)
/////////////////////////////////////////////////////////////////////////////
// CScrollImpl - Provides scrolling support to any window
// Scroll extended styles
#define SCRL_SCROLLCHILDREN 0x00000001
#define SCRL_ERASEBACKGROUND 0x00000002
#define SCRL_NOTHUMBTRACKING 0x00000004
#if (WINVER >= 0x0500)
#define SCRL_SMOOTHSCROLL 0x00000008
#endif //(WINVER >= 0x0500)
template <class T>
class CScrollImpl
{
public:
enum { uSCROLL_FLAGS = SW_INVALIDATE };
POINT m_ptOffset;
SIZE m_sizeAll;
SIZE m_sizeLine;
SIZE m_sizePage;
SIZE m_sizeClient;
int m_zDelta; // current wheel value
int m_nWheelLines; // number of lines to scroll on wheel
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
UINT m_uMsgMouseWheel; // MSH_MOUSEWHEEL
// Note that this message must be forwarded from a top level window
#endif //!((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
UINT m_uScrollFlags;
DWORD m_dwExtendedStyle; // scroll specific extended styles
// Constructor
CScrollImpl() : m_zDelta(0), m_nWheelLines(3), m_uScrollFlags(0U), m_dwExtendedStyle(0)
{
m_ptOffset.x = 0;
m_ptOffset.y = 0;
m_sizeAll.cx = 0;
m_sizeAll.cy = 0;
m_sizePage.cx = 0;
m_sizePage.cy = 0;
m_sizeLine.cx = 0;
m_sizeLine.cy = 0;
m_sizeClient.cx = 0;
m_sizeClient.cy = 0;
SetScrollExtendedStyle(SCRL_SCROLLCHILDREN | SCRL_ERASEBACKGROUND);
}
// Attributes & Operations
DWORD GetScrollExtendedStyle() const
{
return m_dwExtendedStyle;
}
DWORD SetScrollExtendedStyle(DWORD dwExtendedStyle, DWORD dwMask = 0)
{
DWORD dwPrevStyle = m_dwExtendedStyle;
if(dwMask == 0)
m_dwExtendedStyle = dwExtendedStyle;
else
m_dwExtendedStyle = (m_dwExtendedStyle & ~dwMask) | (dwExtendedStyle & dwMask);
// cache scroll flags
T* pT = static_cast<T*>(this);
pT; // avoid level 4 warning
m_uScrollFlags = pT->uSCROLL_FLAGS | (IsScrollingChildren() ? SW_SCROLLCHILDREN : 0) | (IsErasingBackground() ? SW_ERASE : 0);
#if (WINVER >= 0x0500)
m_uScrollFlags |= (IsSmoothScroll() ? SW_SMOOTHSCROLL : 0);
#endif //(WINVER >= 0x0500)
return dwPrevStyle;
}
// offset operations
void SetScrollOffset(int x, int y, BOOL bRedraw = TRUE)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
m_ptOffset.x = x;
m_ptOffset.y = y;
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_POS;
si.nPos = m_ptOffset.x;
pT->SetScrollInfo(SB_HORZ, &si, bRedraw);
si.nPos = m_ptOffset.y;
pT->SetScrollInfo(SB_VERT, &si, bRedraw);
if(bRedraw)
pT->Invalidate();
}
void SetScrollOffset(POINT ptOffset, BOOL bRedraw = TRUE)
{
SetScrollOffset(ptOffset.x, ptOffset.y, bRedraw);
}
void GetScrollOffset(POINT& ptOffset) const
{
ptOffset = m_ptOffset;
}
// size operations
void SetScrollSize(int cx, int cy, BOOL bRedraw = TRUE)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
m_sizeAll.cx = cx;
m_sizeAll.cy = cy;
m_ptOffset.x = 0;
m_ptOffset.y = 0;
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
si.nMin = 0;
si.nMax = m_sizeAll.cx - 1;
si.nPage = m_sizeClient.cx;
si.nPos = m_ptOffset.x;
pT->SetScrollInfo(SB_HORZ, &si, bRedraw);
si.nMax = m_sizeAll.cy - 1;
si.nPage = m_sizeClient.cy;
si.nPos = m_ptOffset.y;
pT->SetScrollInfo(SB_VERT, &si, bRedraw);
SetScrollLine(0, 0);
SetScrollPage(0, 0);
if(bRedraw)
pT->Invalidate();
}
void SetScrollSize(SIZE size, BOOL bRedraw = TRUE)
{
SetScrollSize(size.cx, size.cy, bRedraw);
}
void GetScrollSize(SIZE& sizeWnd) const
{
sizeWnd = m_sizeAll;
}
// line operations
void SetScrollLine(int cxLine, int cyLine)
{
ATLASSERT(cxLine >= 0 && cyLine >= 0);
ATLASSERT(m_sizeAll.cx != 0 && m_sizeAll.cy != 0);
m_sizeLine.cx = CalcLineOrPage(cxLine, m_sizeAll.cx, 100);
m_sizeLine.cy = CalcLineOrPage(cyLine, m_sizeAll.cy, 100);
}
void SetScrollLine(SIZE sizeLine)
{
SetScrollLine(sizeLine.cx, sizeLine.cy);
}
void GetScrollLine(SIZE& sizeLine) const
{
sizeLine = m_sizeLine;
}
// page operations
void SetScrollPage(int cxPage, int cyPage)
{
ATLASSERT(cxPage >= 0 && cyPage >= 0);
ATLASSERT(m_sizeAll.cx != 0 && m_sizeAll.cy != 0);
m_sizePage.cx = CalcLineOrPage(cxPage, m_sizeAll.cx, 10);
m_sizePage.cy = CalcLineOrPage(cyPage, m_sizeAll.cy, 10);
}
void SetScrollPage(SIZE sizePage)
{
SetScrollPage(sizePage.cx, sizePage.cy);
}
void GetScrollPage(SIZE& sizePage) const
{
sizePage = m_sizePage;
}
// commands
void ScrollLineDown()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_LINEDOWN, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollLineUp()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_LINEUP, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollPageDown()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_PAGEDOWN, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollPageUp()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_PAGEUP, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollTop()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_TOP, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollBottom()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, SB_BOTTOM, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
}
void ScrollLineRight()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_LINEDOWN, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
void ScrollLineLeft()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_LINEUP, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
void ScrollPageRight()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_PAGEDOWN, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
void ScrollPageLeft()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_PAGEUP, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
void ScrollAllLeft()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_TOP, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
void ScrollAllRight()
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, SB_BOTTOM, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
}
BEGIN_MSG_MAP(CScrollImpl< T >)
MESSAGE_HANDLER(WM_CREATE, OnCreate)
MESSAGE_HANDLER(WM_VSCROLL, OnVScroll)
MESSAGE_HANDLER(WM_HSCROLL, OnHScroll)
MESSAGE_HANDLER(WM_MOUSEWHEEL, OnMouseWheel)
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(m_uMsgMouseWheel, OnMouseWheel)
#endif //(_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
MESSAGE_HANDLER(WM_SETTINGCHANGE, OnSettingChange)
MESSAGE_HANDLER(WM_SIZE, OnSize)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
// standard scroll commands
ALT_MSG_MAP(1)
COMMAND_ID_HANDLER(ID_SCROLL_UP, OnScrollUp)
COMMAND_ID_HANDLER(ID_SCROLL_DOWN, OnScrollDown)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_UP, OnScrollPageUp)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_DOWN, OnScrollPageDown)
COMMAND_ID_HANDLER(ID_SCROLL_TOP, OnScrollTop)
COMMAND_ID_HANDLER(ID_SCROLL_BOTTOM, OnScrollBottom)
COMMAND_ID_HANDLER(ID_SCROLL_LEFT, OnScrollLeft)
COMMAND_ID_HANDLER(ID_SCROLL_RIGHT, OnScrollRight)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_LEFT, OnScrollPageLeft)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_RIGHT, OnScrollPageRight)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_LEFT, OnScrollAllLeft)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_RIGHT, OnScrollAllRight)
END_MSG_MAP()
LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled)
{
GetSystemSettings();
bHandled = FALSE;
return 1;
}
LRESULT OnVScroll(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_VERT, (int)(short)LOWORD(wParam), (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
return 0;
}
LRESULT OnHScroll(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
pT->DoScroll(SB_HORZ, (int)(short)LOWORD(wParam), (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
return 0;
}
LRESULT OnMouseWheel(UINT uMsg, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
uMsg;
int zDelta = (int)(short)HIWORD(wParam);
#else
int zDelta = (uMsg == WM_MOUSEWHEEL) ? (int)(short)HIWORD(wParam) : (int)wParam;
#endif //!((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
int nScrollCode = (m_nWheelLines == WHEEL_PAGESCROLL) ? ((zDelta > 0) ? SB_PAGEUP : SB_PAGEDOWN) : ((zDelta > 0) ? SB_LINEUP : SB_LINEDOWN);
m_zDelta += zDelta; // cumulative
int zTotal = (m_nWheelLines == WHEEL_PAGESCROLL) ? abs(m_zDelta) : abs(m_zDelta) * m_nWheelLines;
if((pT->GetStyle() & WS_VSCROLL) != 0)
{
for(short i = 0; i < zTotal; i += WHEEL_DELTA)
{
pT->DoScroll(SB_VERT, nScrollCode, (int&)m_ptOffset.y, m_sizeAll.cy, m_sizePage.cy, m_sizeLine.cy);
pT->UpdateWindow();
}
}
else // can't scroll vertically, scroll horizontally
{
for(short i = 0; i < zTotal; i += WHEEL_DELTA)
{
pT->DoScroll(SB_HORZ, nScrollCode, (int&)m_ptOffset.x, m_sizeAll.cx, m_sizePage.cx, m_sizeLine.cx);
pT->UpdateWindow();
}
}
int nSteps = m_zDelta / WHEEL_DELTA;
m_zDelta -= nSteps * WHEEL_DELTA;
return 0;
}
LRESULT OnSettingChange(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
GetSystemSettings();
return 0;
}
LRESULT OnSize(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
m_sizeClient.cx = GET_X_LPARAM(lParam);
m_sizeClient.cy = GET_Y_LPARAM(lParam);
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_PAGE | SIF_POS;
si.nPage = m_sizeClient.cx;
si.nPos = m_ptOffset.x;
pT->SetScrollInfo(SB_HORZ, &si, FALSE);
si.nPage = m_sizeClient.cy;
si.nPos = m_ptOffset.y;
pT->SetScrollInfo(SB_VERT, &si, FALSE);
bool bUpdate = false;
int cxMax = m_sizeAll.cx - m_sizeClient.cx;
int cyMax = m_sizeAll.cy - m_sizeClient.cy;
int x = m_ptOffset.x;
int y = m_ptOffset.y;
if(m_ptOffset.x > cxMax)
{
bUpdate = true;
x = (cxMax >= 0) ? cxMax : 0;
}
if(m_ptOffset.y > cyMax)
{
bUpdate = true;
y = (cyMax >= 0) ? cyMax : 0;
}
if(bUpdate)
SetScrollOffset(x, y);
bHandled = FALSE;
return 1;
}
LRESULT OnPaint(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
if(wParam != NULL)
{
CDCHandle dc = (HDC)wParam;
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y);
pT->DoPaint(dc);
}
else
{
CPaintDC dc(pT->m_hWnd);
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y);
pT->DoPaint(dc.m_hDC);
}
return 0;
}
// scrolling handlers
LRESULT OnScrollUp(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollLineUp();
return 0;
}
LRESULT OnScrollDown(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollLineDown();
return 0;
}
LRESULT OnScrollPageUp(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollPageUp();
return 0;
}
LRESULT OnScrollPageDown(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollPageDown();
return 0;
}
LRESULT OnScrollTop(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollTop();
return 0;
}
LRESULT OnScrollBottom(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollBottom();
return 0;
}
LRESULT OnScrollLeft(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollLineLeft();
return 0;
}
LRESULT OnScrollRight(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollLineRight();
return 0;
}
LRESULT OnScrollPageLeft(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollPageLeft();
return 0;
}
LRESULT OnScrollPageRight(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollPageRight();
return 0;
}
LRESULT OnScrollAllLeft(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollAllLeft();
return 0;
}
LRESULT OnScrollAllRight(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
ScrollAllRight();
return 0;
}
// Overrideables
void DoPaint(CDCHandle /*dc*/)
{
// must be implemented in a derived class
ATLASSERT(FALSE);
}
// Implementation
void DoScroll(int nType, int nScrollCode, int& cxyOffset, int cxySizeAll, int cxySizePage, int cxySizeLine)
{
T* pT = static_cast<T*>(this);
RECT rect;
pT->GetClientRect(&rect);
int cxyClient = (nType == SB_VERT) ? rect.bottom : rect.right;
int cxyMax = cxySizeAll - cxyClient;
if(cxyMax < 0) // can't scroll, client area is bigger
return;
BOOL bUpdate = TRUE;
int cxyScroll = 0;
switch(nScrollCode)
{
case SB_TOP: // top or all left
cxyScroll = cxyOffset;
cxyOffset = 0;
break;
case SB_BOTTOM: // bottom or all right
cxyScroll = cxyOffset - cxyMax;
cxyOffset = cxyMax;
break;
case SB_LINEUP: // line up or line left
if(cxyOffset >= cxySizeLine)
{
cxyScroll = cxySizeLine;
cxyOffset -= cxySizeLine;
}
else
{
cxyScroll = cxyOffset;
cxyOffset = 0;
}
break;
case SB_LINEDOWN: // line down or line right
if(cxyOffset < cxyMax - cxySizeLine)
{
cxyScroll = -cxySizeLine;
cxyOffset += cxySizeLine;
}
else
{
cxyScroll = cxyOffset - cxyMax;
cxyOffset = cxyMax;
}
break;
case SB_PAGEUP: // page up or page left
if(cxyOffset >= cxySizePage)
{
cxyScroll = cxySizePage;
cxyOffset -= cxySizePage;
}
else
{
cxyScroll = cxyOffset;
cxyOffset = 0;
}
break;
case SB_PAGEDOWN: // page down or page right
if(cxyOffset < cxyMax - cxySizePage)
{
cxyScroll = -cxySizePage;
cxyOffset += cxySizePage;
}
else
{
cxyScroll = cxyOffset - cxyMax;
cxyOffset = cxyMax;
}
break;
case SB_THUMBTRACK:
if(IsNoThumbTracking())
break;
// else fall through
case SB_THUMBPOSITION:
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_TRACKPOS;
if(pT->GetScrollInfo(nType, &si))
{
cxyScroll = cxyOffset - si.nTrackPos;
cxyOffset = si.nTrackPos;
}
}
break;
case SB_ENDSCROLL:
default:
bUpdate = FALSE;
break;
}
if(bUpdate && cxyScroll != 0)
{
pT->SetScrollPos(nType, cxyOffset, TRUE);
if(nType == SB_VERT)
pT->ScrollWindowEx(0, cxyScroll, m_uScrollFlags);
else
pT->ScrollWindowEx(cxyScroll, 0, m_uScrollFlags);
}
}
int CalcLineOrPage(int nVal, int nMax, int nDiv)
{
if(nVal == 0)
{
nVal = nMax / nDiv;
if(nVal < 1)
nVal = 1;
}
else if(nVal > nMax)
nVal = nMax;
return nVal;
}
void GetSystemSettings()
{
#ifndef SPI_GETWHEELSCROLLLINES
const UINT SPI_GETWHEELSCROLLLINES = 104;
#endif //!SPI_GETWHEELSCROLLLINES
::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &m_nWheelLines, 0);
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
if(m_uMsgMouseWheel != 0)
m_uMsgMouseWheel = ::RegisterWindowMessage(MSH_MOUSEWHEEL);
HWND hWndWheel = FindWindow(MSH_WHEELMODULE_CLASS, MSH_WHEELMODULE_TITLE);
if(::IsWindow(hWndWheel))
{
UINT uMsgScrollLines = ::RegisterWindowMessage(MSH_SCROLL_LINES);
if(uMsgScrollLines != 0)
m_nWheelLines = ::SendMessage(hWndWheel, uMsgScrollLines, 0, 0L);
}
#endif //!((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
}
bool IsScrollingChildren() const
{
return (m_dwExtendedStyle & SCRL_SCROLLCHILDREN) != 0;
}
bool IsErasingBackground() const
{
return (m_dwExtendedStyle & SCRL_ERASEBACKGROUND) != 0;
}
bool IsNoThumbTracking() const
{
return (m_dwExtendedStyle & SCRL_NOTHUMBTRACKING) != 0;
}
#if (WINVER >= 0x0500)
bool IsSmoothScroll() const
{
return (m_dwExtendedStyle & SCRL_SMOOTHSCROLL) != 0;
}
#endif //(WINVER >= 0x0500)
};
/////////////////////////////////////////////////////////////////////////////
// CScrollWindowImpl - Implements a scrollable window
template <class T, class TBase /*= CWindow */, class TWinTraits /*= CControlWinTraits */ >
class ATL_NO_VTABLE CScrollWindowImpl : public CWindowImpl<T, TBase, TWinTraits>, public CScrollImpl< T >
{
public:
BEGIN_MSG_MAP(CScrollImpl< T >)
MESSAGE_HANDLER(WM_VSCROLL, CScrollImpl< T >::OnVScroll)
MESSAGE_HANDLER(WM_HSCROLL, CScrollImpl< T >::OnHScroll)
MESSAGE_HANDLER(WM_MOUSEWHEEL, CScrollImpl< T >::OnMouseWheel)
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(m_uMsgMouseWheel, CScrollImpl< T >::OnMouseWheel)
#endif //(_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
MESSAGE_HANDLER(WM_SETTINGCHANGE, CScrollImpl< T >::OnSettingChange)
MESSAGE_HANDLER(WM_SIZE, CScrollImpl< T >::OnSize)
MESSAGE_HANDLER(WM_PAINT, CScrollImpl< T >::OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, CScrollImpl< T >::OnPaint)
ALT_MSG_MAP(1)
COMMAND_ID_HANDLER(ID_SCROLL_UP, CScrollImpl< T >::OnScrollUp)
COMMAND_ID_HANDLER(ID_SCROLL_DOWN, CScrollImpl< T >::OnScrollDown)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_UP, CScrollImpl< T >::OnScrollPageUp)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_DOWN, CScrollImpl< T >::OnScrollPageDown)
COMMAND_ID_HANDLER(ID_SCROLL_TOP, CScrollImpl< T >::OnScrollTop)
COMMAND_ID_HANDLER(ID_SCROLL_BOTTOM, CScrollImpl< T >::OnScrollBottom)
COMMAND_ID_HANDLER(ID_SCROLL_LEFT, CScrollImpl< T >::OnScrollLeft)
COMMAND_ID_HANDLER(ID_SCROLL_RIGHT, CScrollImpl< T >::OnScrollRight)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_LEFT, CScrollImpl< T >::OnScrollPageLeft)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_RIGHT, CScrollImpl< T >::OnScrollPageRight)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_LEFT, CScrollImpl< T >::OnScrollAllLeft)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_RIGHT, CScrollImpl< T >::OnScrollAllRight)
END_MSG_MAP()
};
/////////////////////////////////////////////////////////////////////////////
// CMapScrollImpl - Provides mapping and scrolling support to any window
template <class T>
class CMapScrollImpl : public CScrollImpl< T >
{
public:
int m_nMapMode;
RECT m_rectLogAll;
SIZE m_sizeLogLine;
SIZE m_sizeLogPage;
// Constructor
CMapScrollImpl() : m_nMapMode(MM_TEXT)
{
::SetRectEmpty(&m_rectLogAll);
m_sizeLogPage.cx = 0;
m_sizeLogPage.cy = 0;
m_sizeLogLine.cx = 0;
m_sizeLogLine.cy = 0;
}
// Attributes & Operations
// mapping mode operations
void SetScrollMapMode(int nMapMode)
{
ATLASSERT(nMapMode >= MM_MIN && nMapMode <= MM_MAX_FIXEDSCALE);
m_nMapMode = nMapMode;
}
int GetScrollMapMode() const
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
return m_nMapMode;
}
// offset operations
void SetScrollOffset(int x, int y, BOOL bRedraw = TRUE)
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
POINT ptOff = { x, y };
// block: convert logical to device units
{
CWindowDC dc(NULL);
dc.SetMapMode(m_nMapMode);
dc.LPtoDP(&ptOff);
}
CScrollImpl< T >::SetScrollOffset(ptOff, bRedraw);
}
void SetScrollOffset(POINT ptOffset, BOOL bRedraw = TRUE)
{
SetScrollOffset(ptOffset.x, ptOffset.y, bRedraw);
}
void GetScrollOffset(POINT& ptOffset) const
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
ptOffset = m_ptOffset;
// block: convert logical to device units
{
CWindowDC dc(NULL);
dc.SetMapMode(m_nMapMode);
dc.DPtoLP(&ptOffset);
}
}
// size operations
void SetScrollSize(int xMin, int yMin, int xMax, int yMax, BOOL bRedraw = TRUE)
{
ATLASSERT(xMax > xMin && yMax > yMin);
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
::SetRect(&m_rectLogAll, xMin, yMax, xMax, yMin);
SIZE sizeAll;
sizeAll.cx = xMax - xMin + 1;
sizeAll.cy = yMax - xMin + 1;
// block: convert logical to device units
{
CWindowDC dc(NULL);
dc.SetMapMode(m_nMapMode);
dc.LPtoDP(&sizeAll);
}
CScrollImpl< T >::SetScrollSize(sizeAll, bRedraw);
SetScrollLine(0, 0);
SetScrollPage(0, 0);
}
void SetScrollSize(RECT& rcScroll, BOOL bRedraw = TRUE)
{
SetScrollSize(rcScroll.left, rcScroll.top, rcScroll.right, rcScroll.bottom, bRedraw);
}
void SetScrollSize(int cx, int cy, BOOL bRedraw = TRUE)
{
SetScrollSize(0, 0, cx, cy, bRedraw);
}
void SetScrollSize(SIZE size, BOOL bRedraw = NULL)
{
SetScrollSize(0, 0, size.cx, size.cy, bRedraw);
}
void GetScrollSize(RECT& rcScroll) const
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
rcScroll = m_rectLogAll;
}
// line operations
void SetScrollLine(int cxLine, int cyLine)
{
ATLASSERT(cxLine >= 0 && cyLine >= 0);
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
m_sizeLogLine.cx = cxLine;
m_sizeLogLine.cy = cyLine;
SIZE sizeLine = m_sizeLogLine;
// block: convert logical to device units
{
CWindowDC dc(NULL);
dc.SetMapMode(m_nMapMode);
dc.LPtoDP(&sizeLine);
}
CScrollImpl< T >::SetScrollLine(sizeLine);
}
void SetScrollLine(SIZE sizeLine)
{
SetScrollLine(sizeLine.cx, sizeLine.cy);
}
void GetScrollLine(SIZE& sizeLine) const
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
sizeLine = m_sizeLogLine;
}
// page operations
void SetScrollPage(int cxPage, int cyPage)
{
ATLASSERT(cxPage >= 0 && cyPage >= 0);
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
m_sizeLogPage.cx = cxPage;
m_sizeLogPage.cy = cyPage;
SIZE sizePage = m_sizeLogPage;
// block: convert logical to device units
{
CWindowDC dc(NULL);
dc.SetMapMode(m_nMapMode);
dc.LPtoDP(&sizePage);
}
CScrollImpl< T >::SetScrollPage(sizePage);
}
void SetScrollPage(SIZE sizePage)
{
SetScrollPage(sizePage.cx, sizePage.cy);
}
void GetScrollPage(SIZE& sizePage) const
{
ATLASSERT(m_nMapMode >= MM_MIN && m_nMapMode <= MM_MAX_FIXEDSCALE);
sizePage = m_sizeLogPage;
}
BEGIN_MSG_MAP(CMapScrollImpl< T >)
MESSAGE_HANDLER(WM_VSCROLL, CScrollImpl< T >::OnVScroll)
MESSAGE_HANDLER(WM_HSCROLL, CScrollImpl< T >::OnHScroll)
MESSAGE_HANDLER(WM_MOUSEWHEEL, CScrollImpl< T >::OnMouseWheel)
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(m_uMsgMouseWheel, CScrollImpl< T >::OnMouseWheel)
#endif //(_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
MESSAGE_HANDLER(WM_SETTINGCHANGE, CScrollImpl< T >::OnSettingChange)
MESSAGE_HANDLER(WM_SIZE, CScrollImpl< T >::OnSize)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
ALT_MSG_MAP(1)
COMMAND_ID_HANDLER(ID_SCROLL_UP, CScrollImpl< T >::OnScrollUp)
COMMAND_ID_HANDLER(ID_SCROLL_DOWN, CScrollImpl< T >::OnScrollDown)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_UP, CScrollImpl< T >::OnScrollPageUp)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_DOWN, CScrollImpl< T >::OnScrollPageDown)
COMMAND_ID_HANDLER(ID_SCROLL_TOP, CScrollImpl< T >::OnScrollTop)
COMMAND_ID_HANDLER(ID_SCROLL_BOTTOM, CScrollImpl< T >::OnScrollBottom)
COMMAND_ID_HANDLER(ID_SCROLL_LEFT, CScrollImpl< T >::OnScrollLeft)
COMMAND_ID_HANDLER(ID_SCROLL_RIGHT, CScrollImpl< T >::OnScrollRight)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_LEFT, CScrollImpl< T >::OnScrollPageLeft)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_RIGHT, CScrollImpl< T >::OnScrollPageRight)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_LEFT, CScrollImpl< T >::OnScrollAllLeft)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_RIGHT, CScrollImpl< T >::OnScrollAllRight)
END_MSG_MAP()
LRESULT OnPaint(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
ATLASSERT(::IsWindow(pT->m_hWnd));
if(wParam != NULL)
{
CDCHandle dc = (HDC)wParam;
dc.SetMapMode(m_nMapMode);
if(m_nMapMode == MM_TEXT)
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y);
else
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y + m_sizeAll.cy);
dc.SetWindowOrg(m_rectLogAll.left, m_rectLogAll.bottom);
pT->DoPaint(dc);
}
else
{
CPaintDC dc(pT->m_hWnd);
dc.SetMapMode(m_nMapMode);
if(m_nMapMode == MM_TEXT)
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y);
else
dc.SetViewportOrg(-m_ptOffset.x, -m_ptOffset.y + m_sizeAll.cy);
dc.SetWindowOrg(m_rectLogAll.left, m_rectLogAll.bottom);
pT->DoPaint(dc.m_hDC);
}
return 0;
}
};
/////////////////////////////////////////////////////////////////////////////
// CMapScrollWindowImpl - Implements scrolling window with mapping
template <class T, class TBase /*= CWindow */, class TWinTraits /*= CControlWinTraits */ >
class ATL_NO_VTABLE CMapScrollWindowImpl : public CWindowImpl< T, TBase, TWinTraits >, public CMapScrollImpl< T >
{
public:
BEGIN_MSG_MAP(CMapScrollWindowImpl< T >)
MESSAGE_HANDLER(WM_VSCROLL, CScrollImpl< T >::OnVScroll)
MESSAGE_HANDLER(WM_HSCROLL, CScrollImpl< T >::OnHScroll)
MESSAGE_HANDLER(WM_MOUSEWHEEL, CScrollImpl< T >::OnMouseWheel)
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(m_uMsgMouseWheel, CScrollImpl< T >::OnMouseWheel)
#endif //(_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
MESSAGE_HANDLER(WM_SETTINGCHANGE, CScrollImpl< T >::OnSettingChange)
MESSAGE_HANDLER(WM_SIZE, CScrollImpl< T >::OnSize)
MESSAGE_HANDLER(WM_PAINT, CMapScrollImpl< T >::OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, CMapScrollImpl< T >::OnPaint)
ALT_MSG_MAP(1)
COMMAND_ID_HANDLER(ID_SCROLL_UP, CScrollImpl< T >::OnScrollUp)
COMMAND_ID_HANDLER(ID_SCROLL_DOWN, CScrollImpl< T >::OnScrollDown)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_UP, CScrollImpl< T >::OnScrollPageUp)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_DOWN, CScrollImpl< T >::OnScrollPageDown)
COMMAND_ID_HANDLER(ID_SCROLL_TOP, CScrollImpl< T >::OnScrollTop)
COMMAND_ID_HANDLER(ID_SCROLL_BOTTOM, CScrollImpl< T >::OnScrollBottom)
COMMAND_ID_HANDLER(ID_SCROLL_LEFT, CScrollImpl< T >::OnScrollLeft)
COMMAND_ID_HANDLER(ID_SCROLL_RIGHT, CScrollImpl< T >::OnScrollRight)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_LEFT, CScrollImpl< T >::OnScrollPageLeft)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_RIGHT, CScrollImpl< T >::OnScrollPageRight)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_LEFT, CScrollImpl< T >::OnScrollAllLeft)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_RIGHT, CScrollImpl< T >::OnScrollAllRight)
END_MSG_MAP()
};
/////////////////////////////////////////////////////////////////////////////
// CFSBWindow - Use as a base instead of CWindow to get flat scroll bar support
#if defined(__ATLCTRLS_H__) && (_WIN32_IE >= 0x0400)
template <class TBase /*= CWindow */ > class CFSBWindowT : public TBase, public CFlatScrollBarImpl<CFSBWindowT< TBase > >
{
public:
// Constructors
CFSBWindowT(HWND hWnd = NULL) : TBase(hWnd)
{ }
CFSBWindowT< TBase >& operator=(HWND hWnd)
{
m_hWnd = hWnd;
return *this;
}
// CWindow overrides that use flat scroll bar API
// (only those methods that are used by scroll window classes)
int SetScrollPos(int nBar, int nPos, BOOL bRedraw = TRUE)
{
ATLASSERT(::IsWindow(m_hWnd));
return FlatSB_SetScrollPos(nBar, nPos, bRedraw);
}
BOOL GetScrollInfo(int nBar, LPSCROLLINFO lpScrollInfo)
{
ATLASSERT(::IsWindow(m_hWnd));
return FlatSB_GetScrollInfo(nBar, lpScrollInfo);
}
BOOL SetScrollInfo(int nBar, LPSCROLLINFO lpScrollInfo, BOOL bRedraw = TRUE)
{
ATLASSERT(::IsWindow(m_hWnd));
return FlatSB_SetScrollInfo(nBar, lpScrollInfo, bRedraw);
}
};
typedef CFSBWindowT<CWindow> CFSBWindow;
#endif //defined(__ATLCTRLS_H__) && (_WIN32_IE >= 0x0400)
}; //namespace WTL
#endif //__ATLSCRL_H__