void CHTRichEditCtrl::AddLine(LPCTSTR pszMsg, int iLen, bool bLink, COLORREF cr, COLORREF bk, DWORD mask)
{
int iMsgLen = (iLen == -1) ? _tcslen(pszMsg) : iLen;
if (iMsgLen == 0)
return;
// Get Edit contents dimensions and cursor position
long lStartChar, lEndChar;
GetSel(lStartChar, lEndChar);
int iSize = GetWindowTextLength();
// Get Auto-AutoScroll state depending on scrollbar position
bool bAutoAutoScroll = m_bAutoScroll;
// Use the 'ScrollInfo' only, if there is a scrollbar available, otherwise we would
// use a scrollinfo which points to the top and we would thus stay at the top.
bool bScrollInfo = false;
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if ((GetStyle() & WS_VSCROLL) && GetScrollInfo(SB_VERT, &si)) {
bScrollInfo = true;
// use some threshold to determine if at end or "very near" at end, unfortunately
// this is needed to get around richedit specific stuff. this threshold (pixels)
// should somewhat reflect the font size used in the control.
bAutoAutoScroll = (si.nPos >= (int)(si.nMax - si.nPage - 20));
}
// Reduce flicker by ignoring WM_PAINT
m_bNoPaint = true;
BOOL bIsVisible = IsWindowVisible();
if (bIsVisible)
SetRedraw(FALSE);
// Remember where we are
//int iFirstLine = !bAutoAutoScroll ? GetFirstVisibleLine() : 0;
POINT ptScrollPos;
SendMessage(EM_GETSCROLLPOS, 0, (LPARAM)&ptScrollPos);
// Select at the end of text and replace the selection
SafeAddLine(iSize, pszMsg, iMsgLen, lStartChar, lEndChar, bLink, cr, bk, mask);
SetSel(lStartChar, lEndChar); // Restore previous selection
if (bAutoAutoScroll)
ScrollToLastLine();
else {
//LineScroll(iFirstLine - GetFirstVisibleLine());
SendMessage(EM_SETSCROLLPOS, 0, (LPARAM)&ptScrollPos);
}
m_bNoPaint = false;
if (bIsVisible) {
SetRedraw();
Invalidate();
}
}
void CHTRichEditCtrl::OnSize(UINT nType, int cx, int cy)
{
// Use the 'ScrollInfo' only, if there is a scrollbar available, otherwise we would
// use a scrollinfo which points to the top and we would thus stay at the top.
bool bAtEndOfScroll;
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if ((GetStyle() & WS_VSCROLL) && GetScrollInfo(SB_VERT, &si))
bAtEndOfScroll = (si.nPos >= (int)(si.nMax - si.nPage));
else
bAtEndOfScroll = true;
CRichEditCtrl::OnSize(nType, cx, cy);
if (bAtEndOfScroll)
ScrollToLastLine();
}
void CHTRichEditCtrl::AddLine(LPCTSTR pszMsg, int iLen, bool bLink, COLORREF cr, COLORREF bk, DWORD mask)
{
int iMsgLen = (iLen == -1) ? _tcslen(pszMsg) : iLen;
if (iMsgLen == 0)
return;
#ifdef _DEBUG
// if (pszMsg[iMsgLen - 1] == _T('\n'))
// ASSERT( iMsgLen >= 2 && pszMsg[iMsgLen - 2] == _T('\r') );
#endif
// Get Edit contents dimensions and cursor position
long lStartChar, lEndChar;
GetSel(lStartChar, lEndChar);
int iSize = GetWindowTextLength();
if (lStartChar == iSize && iSize == lEndChar)
{
// The cursor resides at the end of text
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if (m_bAutoScroll && GetScrollInfo(SB_VERT, &si) && si.nPos >= (int)(si.nMax - si.nPage + 1))
{
// Not scrolled away
SafeAddLine(iSize, pszMsg, iLen, lStartChar, lEndChar, bLink, cr, bk, mask);
if (m_bAutoScroll && !IsWindowVisible())
ScrollToLastLine();
}
else
{
// Reduce flicker by ignoring WM_PAINT
m_bNoPaint = true;
BOOL bIsVisible = IsWindowVisible();
if (bIsVisible)
SetRedraw(FALSE);
// Remember where we are
int iFirstLine = !m_bAutoScroll ? GetFirstVisibleLine() : 0;
// Select at the end of text and replace the selection
// This is a very fast way to add text to an edit control
SafeAddLine(iSize, pszMsg, iLen, lStartChar, lEndChar, bLink, cr, bk, mask);
//if (m_bAutoScroll && lStartChar == lEndChar)
// lStartChar = lEndChar = -1;
SetSel(lStartChar, lEndChar); // Restore our previous selection
if (!m_bAutoScroll)
LineScroll(iFirstLine - GetFirstVisibleLine());
else
ScrollToLastLine();
m_bNoPaint = false;
if (bIsVisible){
SetRedraw();
if (m_bRichEdit)
Invalidate();
}
}
}
else
{
// We should add the text anyway...
// Reduce flicker by ignoring WM_PAINT
m_bNoPaint = true;
BOOL bIsVisible = IsWindowVisible();
if (bIsVisible)
SetRedraw(FALSE);
// Remember where we are
int iFirstLine = !m_bAutoScroll ? GetFirstVisibleLine() : 0;
// Very annoying problems with EM_GETSCROLLPOS/EM_SETSCROLLPOS. Depending
// on the amount of data in the control, the control may start to scroll up
// by itself(!!) -- obviously because of some internal rounding errors..
//
// Using 'LineScroll' also gives glitches (also depending on the amount of
// data stored in the control), but at least it doesn't start to show some 'life'
/*POINT ptScrollPos;
if (!m_bAutoScroll)
SendMessage(EM_GETSCROLLPOS, 0, (LPARAM)&ptScrollPos);*/
if (lStartChar != lEndChar)
{
// If we are currently selecting some text, we have to find out
// if the caret is near the beginning of this block or near the end.
// Note that this does not always work. Because of the EM_CHARFROMPOS
// message returning only 16 bits this will fail if the user has selected
// a block with a length dividable by 64k.
// NOTE: This may cause a lot of terrible CRASHES within the RichEdit control when used for a RichEdit control!?
// To reproduce the crash: click in the RE control while it's drawing a line and start a selection!
if (!m_bRichEdit){
CPoint pt;
::GetCaretPos(&pt);
int iCaretPos = CharFromPos(pt);
if (abs((lStartChar % 0xffff - iCaretPos)) < abs((lEndChar % 0xffff - iCaretPos)))
{
iCaretPos = lStartChar;
lStartChar = lEndChar;
lEndChar = iCaretPos;
}
}
}
// Note: This will flicker, if someone has a good idea how to prevent this - let me know
// Select at the end of text and replace the selection
// This is a very fast way to add text to an edit control
SafeAddLine(iSize, pszMsg, iLen, lStartChar, lEndChar, bLink, cr, bk, mask);
//if (m_bAutoScroll && lStartChar == lEndChar)
// lStartChar = lEndChar = -1;
SetSel(lStartChar, lEndChar); // Restore our previous selection
if (!m_bAutoScroll){
LineScroll(iFirstLine - GetFirstVisibleLine());
//SendMessage(EM_SETSCROLLPOS, 0, (LPARAM)&ptScrollPos);
}
else
ScrollToLastLine();
m_bNoPaint = false;
if (bIsVisible){
SetRedraw();
if (m_bRichEdit)
Invalidate();
}
}
}
void CHTRichEditCtrl::ApplySkin()
{
if (!m_strSkinKey.IsEmpty())
{
// Use the 'ScrollInfo' only, if there is a scrollbar available, otherwise we would
// use a scrollinfo which points to the top and we would thus stay at the top.
bool bAtEndOfScroll;
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if ((GetStyle() & WS_VSCROLL) && GetScrollInfo(SB_VERT, &si))
bAtEndOfScroll = (si.nPos >= (int)(si.nMax - si.nPage));
else
bAtEndOfScroll = true;
COLORREF cr;
if (theApp.LoadSkinColor(m_strSkinKey + _T("Fg"), cr)) {
m_bDfltForeground = false;
m_crForeground = cr;
}
else {
m_bDfltForeground = m_crDfltForeground == CLR_DEFAULT;
m_crForeground = m_bDfltForeground ? GetSysColor(COLOR_WINDOWTEXT) : m_crDfltForeground;
}
bool bSetCharFormat = false;
CHARFORMAT cf;
GetDefaultCharFormat(cf);
if (!m_bDfltForeground && (cf.dwEffects & CFE_AUTOCOLOR)) {
cf.dwEffects &= ~CFE_AUTOCOLOR;
bSetCharFormat = true;
}
else if (m_bDfltForeground && !(cf.dwEffects & CFE_AUTOCOLOR)) {
cf.dwEffects |= CFE_AUTOCOLOR;
bSetCharFormat = true;
}
if (bSetCharFormat) {
cf.dwMask |= CFM_COLOR;
cf.crTextColor = m_crForeground;
VERIFY( SetDefaultCharFormat(cf) );
VERIFY( GetSelectionCharFormat(m_cfDefault) );
}
if (theApp.LoadSkinColor(m_strSkinKey + _T("Bk"), cr)) {
m_bDfltBackground = false;
m_crBackground = cr;
SetBackgroundColor(FALSE, m_crBackground);
}
else {
m_bDfltBackground = m_crDfltBackground == CLR_DEFAULT;
m_crBackground = m_bDfltBackground ? GetSysColor(COLOR_WINDOW) : m_crDfltBackground;
SetBackgroundColor(m_bDfltBackground, m_crBackground);
}
if (bAtEndOfScroll)
ScrollToLastLine();
}
else
{
m_bDfltForeground = m_crDfltForeground == CLR_DEFAULT;
m_crForeground = m_bDfltForeground ? GetSysColor(COLOR_WINDOWTEXT) : m_crDfltForeground;
m_bDfltBackground = m_crDfltBackground == CLR_DEFAULT;
m_crBackground = m_bDfltBackground ? GetSysColor(COLOR_WINDOW) : m_crDfltBackground;
VERIFY( GetSelectionCharFormat(m_cfDefault) );
}
PurgeSmileyCaches();
}
void CHTRichEditCtrl::SetFont(CFont* pFont, BOOL bRedraw)
{
// Use the 'ScrollInfo' only, if there is a scrollbar available, otherwise we would
// use a scrollinfo which points to the top and we would thus stay at the top.
bool bAtEndOfScroll;
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if ((GetStyle() & WS_VSCROLL) && GetScrollInfo(SB_VERT, &si))
bAtEndOfScroll = (si.nPos >= (int)(si.nMax - si.nPage));
else
bAtEndOfScroll = true;
LOGFONT lf = {0};
pFont->GetLogFont(&lf);
CHARFORMAT cf = {0};
cf.cbSize = sizeof cf;
cf.dwMask |= CFM_BOLD;
cf.dwEffects |= (lf.lfWeight == FW_BOLD) ? CFE_BOLD : 0;
cf.dwMask |= CFM_ITALIC;
cf.dwEffects |= (lf.lfItalic) ? CFE_ITALIC : 0;
cf.dwMask |= CFM_UNDERLINE;
cf.dwEffects |= (lf.lfUnderline) ? CFE_UNDERLINE : 0;
cf.dwMask |= CFM_STRIKEOUT;
cf.dwEffects |= (lf.lfStrikeOut) ? CFE_STRIKEOUT : 0;
cf.dwMask |= CFM_SIZE;
HDC hDC = ::GetDC(HWND_DESKTOP);
int iPointSize = -MulDiv(lf.lfHeight, 72, GetDeviceCaps(hDC, LOGPIXELSY));
cf.yHeight = iPointSize * 20;
::ReleaseDC(NULL, hDC);
cf.dwMask |= CFM_FACE;
cf.bPitchAndFamily = lf.lfPitchAndFamily;
_tcsncpy(cf.szFaceName, lf.lfFaceName, _countof(cf.szFaceName));
cf.szFaceName[_countof(cf.szFaceName) - 1] = _T('\0');
// although this should work correctly (according SDK) it may give false results (e.g. the "click here..." text
// which is shown in the server info window may not be entirely used as a hyperlink???)
// cf.dwMask |= CFM_CHARSET;
// cf.bCharSet = lf.lfCharSet;
cf.yOffset = 0;
VERIFY( SetDefaultCharFormat(cf) );
// copy everything except the color
m_cfDefault.dwMask = (cf.dwMask & ~CFM_COLOR) | (m_cfDefault.dwMask & CFM_COLOR);
m_cfDefault.dwEffects = cf.dwEffects;
m_cfDefault.yHeight = cf.yHeight;
m_cfDefault.yOffset = cf.yOffset;
//m_cfDefault.crTextColor = cf.crTextColor;
m_cfDefault.bCharSet = cf.bCharSet;
m_cfDefault.bPitchAndFamily = cf.bPitchAndFamily;
memcpy(m_cfDefault.szFaceName, cf.szFaceName, sizeof(m_cfDefault.szFaceName));
PurgeSmileyCaches();
if (bAtEndOfScroll)
ScrollToLastLine();
if (bRedraw)
{
Invalidate();
UpdateWindow();
}
}
//////////////////////////////////////////////////////////////////////////////
// This function is based on Daniel Lohmann's article "CEditLog - fast logging
// into an edit control with cout" at http://www.codeproject.com
void CLogEditCtrl::AddLine(LPCTSTR pszMsg, int iLen)
{
int iMsgLen = (iLen == -1) ? _tcslen(pszMsg) : iLen;
if (iMsgLen == 0)
return;
#ifdef _DEBUG
if (pszMsg[iMsgLen - 1] == _T('\n'))
ASSERT( iMsgLen >= 2 && pszMsg[iMsgLen - 2] == _T('\r') );
#endif
// Get Edit contents dimensions and cursor position
int iStartChar, iEndChar;
GetSel(iStartChar, iEndChar);
int iWndTxtLen = GetWindowTextLength();
if (iStartChar == iWndTxtLen && iWndTxtLen == iEndChar)
{
// The cursor resides at the end of text
SCROLLINFO si;
si.cbSize = sizeof si;
si.fMask = SIF_ALL;
if (m_bAutoScroll && GetScrollInfo(SB_VERT, &si) && si.nPos >= (int)(si.nMax - si.nPage + 1))
{
// Not scrolled away
SafeAddLine(iWndTxtLen, iMsgLen, pszMsg, iStartChar, iEndChar);
if (m_bAutoScroll && !IsWindowVisible())
ScrollToLastLine();
}
else
{
// Reduce flicker by ignoring WM_PAINT
m_bNoPaint = true;
BOOL bIsVisible = IsWindowVisible();
if (bIsVisible)
SetRedraw(FALSE);
// Remember where we are
int nFirstLine = !m_bAutoScroll ? GetFirstVisibleLine() : 0;
// Select at the end of text and replace the selection
// This is a very fast way to add text to an edit control
SafeAddLine(iWndTxtLen, iMsgLen, pszMsg, iStartChar, iEndChar);
SetSel(iStartChar, iEndChar, TRUE); // Restore our previous selection
if (!m_bAutoScroll)
LineScroll(nFirstLine - GetFirstVisibleLine());
else
ScrollToLastLine();
m_bNoPaint = false;
if (bIsVisible){
SetRedraw();
if (m_bRichEdit)
Invalidate();
}
}
}
else
{
// We should add the text anyway...
// Reduce flicker by ignoring WM_PAINT
m_bNoPaint = true;
BOOL bIsVisible = IsWindowVisible();
if (bIsVisible)
SetRedraw(FALSE);
// Remember where we are
int nFirstLine = !m_bAutoScroll ? GetFirstVisibleLine() : 0;
if (iStartChar != iEndChar)
{
// If we are currently selecting some text, we have to find out
// if the caret is near the beginning of this block or near the end.
// Note that this does not always work. Because of the EM_CHARFROMPOS
// message returning only 16 bits this will fail if the user has selected
// a block with a length dividable by 64k.
// NOTE: This may cause a lot of terrible CRASHES within the RichEdit control when used for a RichEdit control!?
// To reproduce the crash: click in the RE control while it's drawing a line an start a selection!
if (!m_bRichEdit){
CPoint pt;
::GetCaretPos(&pt);
int nCaretPos = CharFromPos(pt);
if (abs((iStartChar % 0xffff - nCaretPos)) < abs((iEndChar % 0xffff - nCaretPos)))
{
nCaretPos = iStartChar;
iStartChar = iEndChar;
iEndChar = nCaretPos;
}
}
}
// Note: This will flicker, if someone has a good idea how to prevent this - let me know
// Select at the end of text and replace the selection
// This is a very fast way to add text to an edit control
SafeAddLine(iWndTxtLen, iMsgLen, pszMsg, iStartChar, iEndChar);
SetSel(iStartChar, iEndChar, TRUE); // Restore our previous selection
if (!m_bAutoScroll)
LineScroll(nFirstLine - GetFirstVisibleLine());
else
ScrollToLastLine();
m_bNoPaint = false;
if (bIsVisible){
SetRedraw();
if (m_bRichEdit)
Invalidate();
}
}
}