// Windows Template Library - WTL version 10.0
// Copyright (C) Microsoft Corporation, WTL Team. All rights reserved.
//
// This file is a part of the Windows Template Library.
// The use and distribution terms for this software are covered by the
// Microsoft Public License (http://opensource.org/licenses/MS-PL)
// which can be found in the file MS-PL.txt at the root folder.
#ifndef __ATLSPLIT_H__
#define __ATLSPLIT_H__
#pragma once
#ifndef __ATLAPP_H__
#error atlsplit.h requires atlapp.h to be included first
#endif
#ifndef __ATLWIN_H__
#error atlsplit.h requires atlwin.h to be included first
#endif
///////////////////////////////////////////////////////////////////////////////
// Classes in this file:
//
// CSplitterImpl<T>
// CSplitterWindowImpl<T, TBase, TWinTraits>
// CSplitterWindowT<t_bVertical> - CSplitterWindow, CHorSplitterWindow
namespace WTL
{
///////////////////////////////////////////////////////////////////////////////
// CSplitterImpl - Provides splitter support to any window
// Splitter panes constants
#define SPLIT_PANE_LEFT 0
#define SPLIT_PANE_RIGHT 1
#define SPLIT_PANE_TOP SPLIT_PANE_LEFT
#define SPLIT_PANE_BOTTOM SPLIT_PANE_RIGHT
#define SPLIT_PANE_NONE -1
// Splitter extended styles
#define SPLIT_PROPORTIONAL 0x00000001
#define SPLIT_NONINTERACTIVE 0x00000002
#define SPLIT_RIGHTALIGNED 0x00000004
#define SPLIT_BOTTOMALIGNED SPLIT_RIGHTALIGNED
#define SPLIT_GRADIENTBAR 0x00000008
#define SPLIT_FLATBAR 0x00000020
#define SPLIT_FIXEDBARSIZE 0x00000010
// Note: SPLIT_PROPORTIONAL and SPLIT_RIGHTALIGNED/SPLIT_BOTTOMALIGNED are
// mutually exclusive. If both are set, splitter defaults to SPLIT_PROPORTIONAL.
// Also, SPLIT_FLATBAR overrides SPLIT_GRADIENTBAR if both are set.
template <class T>
class CSplitterImpl
{
public:
enum { m_nPanesCount = 2, m_nPropMax = INT_MAX, m_cxyStep = 10 };
bool m_bVertical;
HWND m_hWndPane[m_nPanesCount];
RECT m_rcSplitter;
int m_xySplitterPos; // splitter bar position
int m_xySplitterPosNew; // internal - new position while moving
HWND m_hWndFocusSave;
int m_nDefActivePane;
int m_cxySplitBar; // splitter bar width/height
HCURSOR m_hCursor;
int m_cxyMin; // minimum pane size
int m_cxyBarEdge; // splitter bar edge
bool m_bFullDrag;
int m_cxyDragOffset; // internal
int m_nProportionalPos;
bool m_bUpdateProportionalPos;
DWORD m_dwExtendedStyle; // splitter specific extended styles
int m_nSinglePane; // single pane mode
int m_xySplitterDefPos; // default position
bool m_bProportionalDefPos; // porportinal def pos
// Constructor
CSplitterImpl(bool bVertical = true) :
m_bVertical(bVertical), m_xySplitterPos(-1), m_xySplitterPosNew(-1), m_hWndFocusSave(NULL),
m_nDefActivePane(SPLIT_PANE_NONE), m_cxySplitBar(4), m_hCursor(NULL), m_cxyMin(0), m_cxyBarEdge(0),
m_bFullDrag(true), m_cxyDragOffset(0), m_nProportionalPos(0), m_bUpdateProportionalPos(true),
m_dwExtendedStyle(SPLIT_PROPORTIONAL), m_nSinglePane(SPLIT_PANE_NONE),
m_xySplitterDefPos(-1), m_bProportionalDefPos(false)
{
m_hWndPane[SPLIT_PANE_LEFT] = NULL;
m_hWndPane[SPLIT_PANE_RIGHT] = NULL;
::SetRectEmpty(&m_rcSplitter);
}
// Attributes
void SetSplitterRect(LPRECT lpRect = NULL, bool bUpdate = true)
{
if(lpRect == NULL)
{
T* pT = static_cast<T*>(this);
pT->GetClientRect(&m_rcSplitter);
}
else
{
m_rcSplitter = *lpRect;
}
if(IsProportional())
UpdateProportionalPos();
else if(IsRightAligned())
UpdateRightAlignPos();
if(bUpdate)
UpdateSplitterLayout();
}
void GetSplitterRect(LPRECT lpRect) const
{
ATLASSERT(lpRect != NULL);
*lpRect = m_rcSplitter;
}
bool SetSplitterPos(int xyPos = -1, bool bUpdate = true)
{
if(xyPos == -1) // -1 == default position
{
if(m_bProportionalDefPos)
{
ATLASSERT((m_xySplitterDefPos >= 0) && (m_xySplitterDefPos <= m_nPropMax));
if(m_bVertical)
xyPos = ::MulDiv(m_xySplitterDefPos, m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge, m_nPropMax);
else
xyPos = ::MulDiv(m_xySplitterDefPos, m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge, m_nPropMax);
}
else if(m_xySplitterDefPos != -1)
{
xyPos = m_xySplitterDefPos;
}
else // not set, use middle position
{
if(m_bVertical)
xyPos = (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) / 2;
else
xyPos = (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge) / 2;
}
}
// Adjust if out of valid range
int cxyMax = 0;
if(m_bVertical)
cxyMax = m_rcSplitter.right - m_rcSplitter.left;
else
cxyMax = m_rcSplitter.bottom - m_rcSplitter.top;
if(xyPos < m_cxyMin + m_cxyBarEdge)
xyPos = m_cxyMin;
else if(xyPos > (cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin))
xyPos = cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin;
// Set new position and update if requested
bool bRet = (m_xySplitterPos != xyPos);
m_xySplitterPos = xyPos;
if(m_bUpdateProportionalPos)
{
if(IsProportional())
StoreProportionalPos();
else if(IsRightAligned())
StoreRightAlignPos();
}
else
{
m_bUpdateProportionalPos = true;
}
if(bUpdate && bRet)
UpdateSplitterLayout();
return bRet;
}
int GetSplitterPos() const
{
return m_xySplitterPos;
}
void SetSplitterPosPct(int nPct, bool bUpdate = true)
{
ATLASSERT((nPct >= 0) && (nPct <= 100));
m_nProportionalPos = ::MulDiv(nPct, m_nPropMax, 100);
UpdateProportionalPos();
if(bUpdate)
UpdateSplitterLayout();
}
int GetSplitterPosPct() const
{
int cxyTotal = m_bVertical ? (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) : (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge);
return ((cxyTotal > 0) && (m_xySplitterPos >= 0)) ? ::MulDiv(m_xySplitterPos, 100, cxyTotal) : -1;
}
bool SetSinglePaneMode(int nPane = SPLIT_PANE_NONE)
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT) || (nPane == SPLIT_PANE_NONE));
if(!((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT) || (nPane == SPLIT_PANE_NONE)))
return false;
if(nPane != SPLIT_PANE_NONE)
{
if(::IsWindowVisible(m_hWndPane[nPane]) == FALSE)
::ShowWindow(m_hWndPane[nPane], SW_SHOW);
int nOtherPane = (nPane == SPLIT_PANE_LEFT) ? SPLIT_PANE_RIGHT : SPLIT_PANE_LEFT;
::ShowWindow(m_hWndPane[nOtherPane], SW_HIDE);
if(m_nDefActivePane != nPane)
m_nDefActivePane = nPane;
}
else if(m_nSinglePane != SPLIT_PANE_NONE)
{
int nOtherPane = (m_nSinglePane == SPLIT_PANE_LEFT) ? SPLIT_PANE_RIGHT : SPLIT_PANE_LEFT;
::ShowWindow(m_hWndPane[nOtherPane], SW_SHOW);
}
m_nSinglePane = nPane;
UpdateSplitterLayout();
return true;
}
int GetSinglePaneMode() const
{
return m_nSinglePane;
}
DWORD GetSplitterExtendedStyle() const
{
return m_dwExtendedStyle;
}
DWORD SetSplitterExtendedStyle(DWORD dwExtendedStyle, DWORD dwMask = 0)
{
DWORD dwPrevStyle = m_dwExtendedStyle;
if(dwMask == 0)
m_dwExtendedStyle = dwExtendedStyle;
else
m_dwExtendedStyle = (m_dwExtendedStyle & ~dwMask) | (dwExtendedStyle & dwMask);
#ifdef _DEBUG
if(IsProportional() && IsRightAligned())
ATLTRACE2(atlTraceUI, 0, _T("CSplitterImpl::SetSplitterExtendedStyle - SPLIT_PROPORTIONAL and SPLIT_RIGHTALIGNED are mutually exclusive, defaulting to SPLIT_PROPORTIONAL.\n"));
#endif // _DEBUG
return dwPrevStyle;
}
void SetSplitterDefaultPos(int xyPos = -1)
{
m_xySplitterDefPos = xyPos;
m_bProportionalDefPos = false;
}
void SetSplitterDefaultPosPct(int nPct)
{
ATLASSERT((nPct >= 0) && (nPct <= 100));
m_xySplitterDefPos = ::MulDiv(nPct, m_nPropMax, 100);
m_bProportionalDefPos = true;
}
// Splitter operations
void SetSplitterPanes(HWND hWndLeftTop, HWND hWndRightBottom, bool bUpdate = true)
{
m_hWndPane[SPLIT_PANE_LEFT] = hWndLeftTop;
m_hWndPane[SPLIT_PANE_RIGHT] = hWndRightBottom;
ATLASSERT((m_hWndPane[SPLIT_PANE_LEFT] == NULL) || (m_hWndPane[SPLIT_PANE_RIGHT] == NULL) || (m_hWndPane[SPLIT_PANE_LEFT] != m_hWndPane[SPLIT_PANE_RIGHT]));
if(bUpdate)
UpdateSplitterLayout();
}
bool SetSplitterPane(int nPane, HWND hWnd, bool bUpdate = true)
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT));
if((nPane != SPLIT_PANE_LEFT) && (nPane != SPLIT_PANE_RIGHT))
return false;
m_hWndPane[nPane] = hWnd;
ATLASSERT((m_hWndPane[SPLIT_PANE_LEFT] == NULL) || (m_hWndPane[SPLIT_PANE_RIGHT] == NULL) || (m_hWndPane[SPLIT_PANE_LEFT] != m_hWndPane[SPLIT_PANE_RIGHT]));
if(bUpdate)
UpdateSplitterLayout();
return true;
}
HWND GetSplitterPane(int nPane) const
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT));
if((nPane != SPLIT_PANE_LEFT) && (nPane != SPLIT_PANE_RIGHT))
return NULL;
return m_hWndPane[nPane];
}
bool SetActivePane(int nPane)
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT));
if((nPane != SPLIT_PANE_LEFT) && (nPane != SPLIT_PANE_RIGHT))
return false;
if((m_nSinglePane != SPLIT_PANE_NONE) && (nPane != m_nSinglePane))
return false;
::SetFocus(m_hWndPane[nPane]);
m_nDefActivePane = nPane;
return true;
}
int GetActivePane() const
{
int nRet = SPLIT_PANE_NONE;
HWND hWndFocus = ::GetFocus();
if(hWndFocus != NULL)
{
for(int nPane = 0; nPane < m_nPanesCount; nPane++)
{
if((hWndFocus == m_hWndPane[nPane]) || (::IsChild(m_hWndPane[nPane], hWndFocus) != FALSE))
{
nRet = nPane;
break;
}
}
}
return nRet;
}
bool ActivateNextPane(bool bNext = true)
{
int nPane = m_nSinglePane;
if(nPane == SPLIT_PANE_NONE)
{
switch(GetActivePane())
{
case SPLIT_PANE_LEFT:
nPane = SPLIT_PANE_RIGHT;
break;
case SPLIT_PANE_RIGHT:
nPane = SPLIT_PANE_LEFT;
break;
default:
nPane = bNext ? SPLIT_PANE_LEFT : SPLIT_PANE_RIGHT;
break;
}
}
return SetActivePane(nPane);
}
bool SetDefaultActivePane(int nPane)
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT));
if((nPane != SPLIT_PANE_LEFT) && (nPane != SPLIT_PANE_RIGHT))
return false;
m_nDefActivePane = nPane;
return true;
}
bool SetDefaultActivePane(HWND hWnd)
{
for(int nPane = 0; nPane < m_nPanesCount; nPane++)
{
if(hWnd == m_hWndPane[nPane])
{
m_nDefActivePane = nPane;
return true;
}
}
return false; // not found
}
int GetDefaultActivePane() const
{
return m_nDefActivePane;
}
void DrawSplitter(CDCHandle dc)
{
ATLASSERT(dc.m_hDC != NULL);
if((m_nSinglePane == SPLIT_PANE_NONE) && (m_xySplitterPos == -1))
return;
T* pT = static_cast<T*>(this);
if(m_nSinglePane == SPLIT_PANE_NONE)
{
pT->DrawSplitterBar(dc);
for(int nPane = 0; nPane < m_nPanesCount; nPane++)
{
if(m_hWndPane[nPane] == NULL)
pT->DrawSplitterPane(dc, nPane);
}
}
else
{
if(m_hWndPane[m_nSinglePane] == NULL)
pT->DrawSplitterPane(dc, m_nSinglePane);
}
}
// call to initiate moving splitter bar with keyboard
void MoveSplitterBar()
{
T* pT = static_cast<T*>(this);
int x = 0;
int y = 0;
if(m_bVertical)
{
x = m_xySplitterPos + (m_cxySplitBar / 2) + m_cxyBarEdge;
y = (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge) / 2;
}
else
{
x = (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) / 2;
y = m_xySplitterPos + (m_cxySplitBar / 2) + m_cxyBarEdge;
}
POINT pt = { x, y };
pT->ClientToScreen(&pt);
::SetCursorPos(pt.x, pt.y);
m_xySplitterPosNew = m_xySplitterPos;
pT->SetCapture();
m_hWndFocusSave = pT->SetFocus();
::SetCursor(m_hCursor);
if(!m_bFullDrag)
DrawGhostBar();
if(m_bVertical)
m_cxyDragOffset = x - m_rcSplitter.left - m_xySplitterPos;
else
m_cxyDragOffset = y - m_rcSplitter.top - m_xySplitterPos;
}
void SetOrientation(bool bVertical, bool bUpdate = true)
{
if(m_bVertical != bVertical)
{
m_bVertical = bVertical;
m_hCursor = ::LoadCursor(NULL, m_bVertical ? IDC_SIZEWE : IDC_SIZENS);
T* pT = static_cast<T*>(this);
pT->GetSystemSettings(false);
if(m_bVertical)
m_xySplitterPos = ::MulDiv(m_xySplitterPos, m_rcSplitter.right - m_rcSplitter.left, m_rcSplitter.bottom - m_rcSplitter.top);
else
m_xySplitterPos = ::MulDiv(m_xySplitterPos, m_rcSplitter.bottom - m_rcSplitter.top, m_rcSplitter.right - m_rcSplitter.left);
}
if(bUpdate)
UpdateSplitterLayout();
}
// Overrideables
void DrawSplitterBar(CDCHandle dc)
{
RECT rect = {};
if(GetSplitterBarRect(&rect))
{
dc.FillRect(&rect, COLOR_3DFACE);
if((m_dwExtendedStyle & SPLIT_FLATBAR) != 0)
{
RECT rect1 = rect;
if(m_bVertical)
rect1.right = rect1.left + 1;
else
rect1.bottom = rect1.top + 1;
dc.FillRect(&rect1, COLOR_WINDOW);
rect1 = rect;
if(m_bVertical)
rect1.left = rect1.right - 1;
else
rect1.top = rect1.bottom - 1;
dc.FillRect(&rect1, COLOR_3DSHADOW);
}
else if((m_dwExtendedStyle & SPLIT_GRADIENTBAR) != 0)
{
RECT rect2 = rect;
if(m_bVertical)
rect2.left = (rect.left + rect.right) / 2 - 1;
else
rect2.top = (rect.top + rect.bottom) / 2 - 1;
dc.GradientFillRect(rect2, ::GetSysColor(COLOR_3DFACE), ::GetSysColor(COLOR_3DSHADOW), m_bVertical);
}
// draw 3D edge if needed
T* pT = static_cast<T*>(this);
if((pT->GetExStyle() & WS_EX_CLIENTEDGE) != 0)
dc.DrawEdge(&rect, EDGE_RAISED, m_bVertical ? (BF_LEFT | BF_RIGHT) : (BF_TOP | BF_BOTTOM));
}
}
// called only if pane is empty
void DrawSplitterPane(CDCHandle dc, int nPane)
{
RECT rect = {};
if(GetSplitterPaneRect(nPane, &rect))
{
T* pT = static_cast<T*>(this);
if((pT->GetExStyle() & WS_EX_CLIENTEDGE) == 0)
dc.DrawEdge(&rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
dc.FillRect(&rect, COLOR_APPWORKSPACE);
}
}
// Message map and handlers
BEGIN_MSG_MAP(CSplitterImpl)
MESSAGE_HANDLER(WM_CREATE, OnCreate)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
if(IsInteractive())
{
MESSAGE_HANDLER(WM_SETCURSOR, OnSetCursor)
MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseMove)
MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
MESSAGE_HANDLER(WM_LBUTTONUP, OnLButtonUp)
MESSAGE_HANDLER(WM_LBUTTONDBLCLK, OnLButtonDoubleClick)
MESSAGE_HANDLER(WM_CAPTURECHANGED, OnCaptureChanged)
MESSAGE_HANDLER(WM_KEYDOWN, OnKeyDown)
}
MESSAGE_HANDLER(WM_SETFOCUS, OnSetFocus)
MESSAGE_HANDLER(WM_MOUSEACTIVATE, OnMouseActivate)
MESSAGE_HANDLER(WM_SETTINGCHANGE, OnSettingChange)
END_MSG_MAP()
LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
pT->Init();
bHandled = FALSE;
return 1;
}
LRESULT OnPaint(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
// try setting position if not set
if((m_nSinglePane == SPLIT_PANE_NONE) && (m_xySplitterPos == -1))
pT->SetSplitterPos();
// do painting
if(wParam != NULL)
{
pT->DrawSplitter((HDC)wParam);
}
else
{
CPaintDC dc(pT->m_hWnd);
pT->DrawSplitter(dc.m_hDC);
}
return 0;
}
LRESULT OnSetCursor(UINT /*uMsg*/, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
if(((HWND)wParam == pT->m_hWnd) && (LOWORD(lParam) == HTCLIENT))
{
DWORD dwPos = ::GetMessagePos();
POINT ptPos = { GET_X_LPARAM(dwPos), GET_Y_LPARAM(dwPos) };
pT->ScreenToClient(&ptPos);
if(IsOverSplitterBar(ptPos.x, ptPos.y))
return 1;
}
bHandled = FALSE;
return 0;
}
LRESULT OnMouseMove(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
int xPos = GET_X_LPARAM(lParam);
int yPos = GET_Y_LPARAM(lParam);
if(::GetCapture() == pT->m_hWnd)
{
int xyNewSplitPos = 0;
if(m_bVertical)
xyNewSplitPos = xPos - m_rcSplitter.left - m_cxyDragOffset;
else
xyNewSplitPos = yPos - m_rcSplitter.top - m_cxyDragOffset;
if(xyNewSplitPos == -1) // avoid -1, that means default position
xyNewSplitPos = -2;
if(m_xySplitterPos != xyNewSplitPos)
{
if(m_bFullDrag)
{
if(pT->SetSplitterPos(xyNewSplitPos, true))
pT->UpdateWindow();
}
else
{
DrawGhostBar();
pT->SetSplitterPos(xyNewSplitPos, false);
DrawGhostBar();
}
}
}
else // not dragging, just set cursor
{
if(IsOverSplitterBar(xPos, yPos))
::SetCursor(m_hCursor);
bHandled = FALSE;
}
return 0;
}
LRESULT OnLButtonDown(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
int xPos = GET_X_LPARAM(lParam);
int yPos = GET_Y_LPARAM(lParam);
if((::GetCapture() != pT->m_hWnd) && IsOverSplitterBar(xPos, yPos))
{
m_xySplitterPosNew = m_xySplitterPos;
pT->SetCapture();
m_hWndFocusSave = pT->SetFocus();
::SetCursor(m_hCursor);
if(!m_bFullDrag)
DrawGhostBar();
if(m_bVertical)
m_cxyDragOffset = xPos - m_rcSplitter.left - m_xySplitterPos;
else
m_cxyDragOffset = yPos - m_rcSplitter.top - m_xySplitterPos;
}
else if((::GetCapture() == pT->m_hWnd) && !IsOverSplitterBar(xPos, yPos))
{
::ReleaseCapture();
}
bHandled = FALSE;
return 1;
}
LRESULT OnLButtonUp(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
if(::GetCapture() == pT->m_hWnd)
{
m_xySplitterPosNew = m_xySplitterPos;
::ReleaseCapture();
}
bHandled = FALSE;
return 1;
}
LRESULT OnLButtonDoubleClick(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
pT->SetSplitterPos(); // default
return 0;
}
LRESULT OnCaptureChanged(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
if(!m_bFullDrag)
DrawGhostBar();
if((m_xySplitterPosNew != -1) && (!m_bFullDrag || (m_xySplitterPos != m_xySplitterPosNew)))
{
m_xySplitterPos = m_xySplitterPosNew;
m_xySplitterPosNew = -1;
UpdateSplitterLayout();
T* pT = static_cast<T*>(this);
pT->UpdateWindow();
}
if(m_hWndFocusSave != NULL)
::SetFocus(m_hWndFocusSave);
return 0;
}
LRESULT OnKeyDown(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
if(::GetCapture() == pT->m_hWnd)
{
switch(wParam)
{
case VK_RETURN:
m_xySplitterPosNew = m_xySplitterPos;
// FALLTHROUGH
case VK_ESCAPE:
::ReleaseCapture();
break;
case VK_LEFT:
case VK_RIGHT:
if(m_bVertical)
{
POINT pt = {};
::GetCursorPos(&pt);
int xyPos = m_xySplitterPos + ((wParam == VK_LEFT) ? -pT->m_cxyStep : pT->m_cxyStep);
int cxyMax = m_rcSplitter.right - m_rcSplitter.left;
if(xyPos < (m_cxyMin + m_cxyBarEdge))
xyPos = m_cxyMin;
else if(xyPos > (cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin))
xyPos = cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin;
pt.x += xyPos - m_xySplitterPos;
::SetCursorPos(pt.x, pt.y);
}
break;
case VK_UP:
case VK_DOWN:
if(!m_bVertical)
{
POINT pt = {};
::GetCursorPos(&pt);
int xyPos = m_xySplitterPos + ((wParam == VK_UP) ? -pT->m_cxyStep : pT->m_cxyStep);
int cxyMax = m_rcSplitter.bottom - m_rcSplitter.top;
if(xyPos < (m_cxyMin + m_cxyBarEdge))
xyPos = m_cxyMin;
else if(xyPos > (cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin))
xyPos = cxyMax - m_cxySplitBar - m_cxyBarEdge - m_cxyMin;
pt.y += xyPos - m_xySplitterPos;
::SetCursorPos(pt.x, pt.y);
}
break;
default:
break;
}
}
else
{
bHandled = FALSE;
}
return 0;
}
LRESULT OnSetFocus(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
if(::GetCapture() != pT->m_hWnd)
{
if(m_nSinglePane == SPLIT_PANE_NONE)
{
if((m_nDefActivePane == SPLIT_PANE_LEFT) || (m_nDefActivePane == SPLIT_PANE_RIGHT))
::SetFocus(m_hWndPane[m_nDefActivePane]);
}
else
{
::SetFocus(m_hWndPane[m_nSinglePane]);
}
}
bHandled = FALSE;
return 1;
}
LRESULT OnMouseActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
LRESULT lRet = pT->DefWindowProc(uMsg, wParam, lParam);
if((lRet == MA_ACTIVATE) || (lRet == MA_ACTIVATEANDEAT))
{
DWORD dwPos = ::GetMessagePos();
POINT pt = { GET_X_LPARAM(dwPos), GET_Y_LPARAM(dwPos) };
pT->ScreenToClient(&pt);
RECT rcPane = {};
for(int nPane = 0; nPane < m_nPanesCount; nPane++)
{
if(GetSplitterPaneRect(nPane, &rcPane) && (::PtInRect(&rcPane, pt) != FALSE))
{
m_nDefActivePane = nPane;
break;
}
}
}
return lRet;
}
LRESULT OnSettingChange(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
pT->GetSystemSettings(true);
return 0;
}
// Implementation - internal helpers
void Init()
{
m_hCursor = ::LoadCursor(NULL, m_bVertical ? IDC_SIZEWE : IDC_SIZENS);
T* pT = static_cast<T*>(this);
pT->GetSystemSettings(false);
}
void UpdateSplitterLayout()
{
if((m_nSinglePane == SPLIT_PANE_NONE) && (m_xySplitterPos == -1))
return;
T* pT = static_cast<T*>(this);
RECT rect = {};
if(m_nSinglePane == SPLIT_PANE_NONE)
{
if(GetSplitterBarRect(&rect))
pT->InvalidateRect(&rect);
for(int nPane = 0; nPane < m_nPanesCount; nPane++)
{
if(GetSplitterPaneRect(nPane, &rect))
{
if(m_hWndPane[nPane] != NULL)
::SetWindowPos(m_hWndPane[nPane], NULL, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER);
else
pT->InvalidateRect(&rect);
}
}
}
else
{
if(GetSplitterPaneRect(m_nSinglePane, &rect))
{
if(m_hWndPane[m_nSinglePane] != NULL)
::SetWindowPos(m_hWndPane[m_nSinglePane], NULL, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER);
else
pT->InvalidateRect(&rect);
}
}
}
bool GetSplitterBarRect(LPRECT lpRect) const
{
ATLASSERT(lpRect != NULL);
if((m_nSinglePane != SPLIT_PANE_NONE) || (m_xySplitterPos == -1))
return false;
if(m_bVertical)
{
lpRect->left = m_rcSplitter.left + m_xySplitterPos;
lpRect->top = m_rcSplitter.top;
lpRect->right = m_rcSplitter.left + m_xySplitterPos + m_cxySplitBar + m_cxyBarEdge;
lpRect->bottom = m_rcSplitter.bottom;
}
else
{
lpRect->left = m_rcSplitter.left;
lpRect->top = m_rcSplitter.top + m_xySplitterPos;
lpRect->right = m_rcSplitter.right;
lpRect->bottom = m_rcSplitter.top + m_xySplitterPos + m_cxySplitBar + m_cxyBarEdge;
}
return true;
}
bool GetSplitterPaneRect(int nPane, LPRECT lpRect) const
{
ATLASSERT((nPane == SPLIT_PANE_LEFT) || (nPane == SPLIT_PANE_RIGHT));
ATLASSERT(lpRect != NULL);
bool bRet = true;
if(m_nSinglePane != SPLIT_PANE_NONE)
{
if(nPane == m_nSinglePane)
*lpRect = m_rcSplitter;
else
bRet = false;
}
else if(nPane == SPLIT_PANE_LEFT)
{
if(m_bVertical)
{
lpRect->left = m_rcSplitter.left;
lpRect->top = m_rcSplitter.top;
lpRect->right = m_rcSplitter.left + m_xySplitterPos;
lpRect->bottom = m_rcSplitter.bottom;
}
else
{
lpRect->left = m_rcSplitter.left;
lpRect->top = m_rcSplitter.top;
lpRect->right = m_rcSplitter.right;
lpRect->bottom = m_rcSplitter.top + m_xySplitterPos;
}
}
else if(nPane == SPLIT_PANE_RIGHT)
{
if(m_bVertical)
{
lpRect->left = m_rcSplitter.left + m_xySplitterPos + m_cxySplitBar + m_cxyBarEdge;
lpRect->top = m_rcSplitter.top;
lpRect->right = m_rcSplitter.right;
lpRect->bottom = m_rcSplitter.bottom;
}
else
{
lpRect->left = m_rcSplitter.left;
lpRect->top = m_rcSplitter.top + m_xySplitterPos + m_cxySplitBar + m_cxyBarEdge;
lpRect->right = m_rcSplitter.right;
lpRect->bottom = m_rcSplitter.bottom;
}
}
else
{
bRet = false;
}
return bRet;
}
bool IsOverSplitterRect(int x, int y) const
{
// -1 == don't check
return (((x == -1) || ((x >= m_rcSplitter.left) && (x <= m_rcSplitter.right))) &&
((y == -1) || ((y >= m_rcSplitter.top) && (y <= m_rcSplitter.bottom))));
}
bool IsOverSplitterBar(int x, int y) const
{
if(m_nSinglePane != SPLIT_PANE_NONE)
return false;
if((m_xySplitterPos == -1) || !IsOverSplitterRect(x, y))
return false;
int xy = m_bVertical ? x : y;
int xyOff = m_bVertical ? m_rcSplitter.left : m_rcSplitter.top;
return ((xy >= (xyOff + m_xySplitterPos)) && (xy < (xyOff + m_xySplitterPos + m_cxySplitBar + m_cxyBarEdge)));
}
void DrawGhostBar()
{
RECT rect = {};
if(GetSplitterBarRect(&rect))
{
// convert client to window coordinates
T* pT = static_cast<T*>(this);
RECT rcWnd = {};
pT->GetWindowRect(&rcWnd);
::MapWindowPoints(NULL, pT->m_hWnd, (LPPOINT)&rcWnd, 2);
::OffsetRect(&rect, -rcWnd.left, -rcWnd.top);
// invert the brush pattern (looks just like frame window sizing)
CWindowDC dc(pT->m_hWnd);
CBrush brush(CDCHandle::GetHalftoneBrush());
if(brush.m_hBrush != NULL)
{
CBrushHandle brushOld = dc.SelectBrush(brush);
dc.PatBlt(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, PATINVERT);
dc.SelectBrush(brushOld);
}
}
}
void GetSystemSettings(bool bUpdate)
{
if((m_dwExtendedStyle & SPLIT_FIXEDBARSIZE) == 0)
{
m_cxySplitBar = ::GetSystemMetrics(m_bVertical ? SM_CXSIZEFRAME : SM_CYSIZEFRAME);
}
T* pT = static_cast<T*>(this);
if((pT->GetExStyle() & WS_EX_CLIENTEDGE) != 0)
{
m_cxyBarEdge = 2 * ::GetSystemMetrics(m_bVertical ? SM_CXEDGE : SM_CYEDGE);
m_cxyMin = 0;
}
else
{
m_cxyBarEdge = 0;
m_cxyMin = 2 * ::GetSystemMetrics(m_bVertical ? SM_CXEDGE : SM_CYEDGE);
}
::SystemParametersInfo(SPI_GETDRAGFULLWINDOWS, 0, &m_bFullDrag, 0);
if(bUpdate)
UpdateSplitterLayout();
}
bool IsProportional() const
{
return ((m_dwExtendedStyle & SPLIT_PROPORTIONAL) != 0);
}
void StoreProportionalPos()
{
int cxyTotal = m_bVertical ? (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) : (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge);
if(cxyTotal > 0)
m_nProportionalPos = ::MulDiv(m_xySplitterPos, m_nPropMax, cxyTotal);
else
m_nProportionalPos = 0;
ATLTRACE2(atlTraceUI, 0, _T("CSplitterImpl::StoreProportionalPos - %i\n"), m_nProportionalPos);
}
void UpdateProportionalPos()
{
int cxyTotal = m_bVertical ? (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) : (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge);
if(cxyTotal > 0)
{
int xyNewPos = ::MulDiv(m_nProportionalPos, cxyTotal, m_nPropMax);
m_bUpdateProportionalPos = false;
T* pT = static_cast<T*>(this);
pT->SetSplitterPos(xyNewPos, false);
}
}
bool IsRightAligned() const
{
return ((m_dwExtendedStyle & SPLIT_RIGHTALIGNED) != 0);
}
void StoreRightAlignPos()
{
int cxyTotal = m_bVertical ? (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) : (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge);
if(cxyTotal > 0)
m_nProportionalPos = cxyTotal - m_xySplitterPos;
else
m_nProportionalPos = 0;
ATLTRACE2(atlTraceUI, 0, _T("CSplitterImpl::StoreRightAlignPos - %i\n"), m_nProportionalPos);
}
void UpdateRightAlignPos()
{
int cxyTotal = m_bVertical ? (m_rcSplitter.right - m_rcSplitter.left - m_cxySplitBar - m_cxyBarEdge) : (m_rcSplitter.bottom - m_rcSplitter.top - m_cxySplitBar - m_cxyBarEdge);
if(cxyTotal > 0)
{
m_bUpdateProportionalPos = false;
T* pT = static_cast<T*>(this);
pT->SetSplitterPos(cxyTotal - m_nProportionalPos, false);
}
}
bool IsInteractive() const
{
return ((m_dwExtendedStyle & SPLIT_NONINTERACTIVE) == 0);
}
};
///////////////////////////////////////////////////////////////////////////////
// CSplitterWindowImpl - Implements a splitter window
template <class T, class TBase = ATL::CWindow, class TWinTraits = ATL::CControlWinTraits>
class ATL_NO_VTABLE CSplitterWindowImpl : public ATL::CWindowImpl< T, TBase, TWinTraits >, public CSplitterImpl< T >
{
public:
DECLARE_WND_CLASS_EX2(NULL, T, CS_DBLCLKS, COLOR_WINDOW)
CSplitterWindowImpl(bool bVertical = true) : CSplitterImpl< T >(bVertical)
{ }
BOOL SubclassWindow(HWND hWnd)
{
BOOL bRet = ATL::CWindowImpl< T, TBase, TWinTraits >::SubclassWindow(hWnd);
if(bRet != FALSE)
{
T* pT = static_cast<T*>(this);
pT->Init();
this->SetSplitterRect();
}
return bRet;
}
BEGIN_MSG_MAP(CSplitterWindowImpl)
MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBackground)
MESSAGE_HANDLER(WM_SIZE, OnSize)
CHAIN_MSG_MAP(CSplitterImpl< T >)
FORWARD_NOTIFICATIONS()
END_MSG_MAP()
LRESULT OnEraseBackground(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
// handled, no background painting needed
return 1;
}
LRESULT OnSize(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& bHandled)
{
if(wParam != SIZE_MINIMIZED)
this->SetSplitterRect();
bHandled = FALSE;
return 1;
}
};
///////////////////////////////////////////////////////////////////////////////
// CSplitterWindow/CHorSplitterWindow - Implements splitter windows to be used as is
template <bool t_bVertical = true>
class CSplitterWindowT : public CSplitterWindowImpl<CSplitterWindowT<t_bVertical> >
{
public:
DECLARE_WND_CLASS_EX2(_T("WTL_SplitterWindow"), CSplitterWindowT<t_bVertical>, CS_DBLCLKS, COLOR_WINDOW)
CSplitterWindowT() : CSplitterWindowImpl<CSplitterWindowT<t_bVertical> >(t_bVertical)
{ }
};
typedef CSplitterWindowT<true> CSplitterWindow;
typedef CSplitterWindowT<false> CHorSplitterWindow;
} // namespace WTL
#endif // __ATLSPLIT_H__
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