/*
* Toggle overwrite mode.
*/
void ToggleOverwrite( LPCLASSDATA lpcd )
{
/*
* Toggle overwrite mode.
*/
lpcd->bOverwrite = ! lpcd->bOverwrite;
/*
* Destroy the caret if we have focus and
* the caret type is not fixed at a block cursor.
*/
if ( Parser->nCaretType != CARET_BLOCK && lpcd->bHasFocus )
{
/*
* Destroy...
*/
DisplayCaret( lpcd, FALSE );
DestroyCaret();
}
/*
* Update status.
*/
SendStatusMessage( lpcd );
/*
* Create the caret if we have focus and
* the caret type is not fixed at a block cursor.
*/
if ( Parser->nCaretType != CARET_BLOCK && lpcd->bHasFocus )
/*
* Create the caret.
*/
CreateTheCaret( lpcd );
}
void UpdateCaret( LPCLASSDATA lpcd )
{
/*
* Do we have the focus?
*/
if ( lpcd->bHasFocus == TRUE || lpcd->bDragOver == TRUE )
{
/*
* Caret inside the view?
*/
if ( CaretInView( lpcd ))
{
/*
* Already visible?
*/
if ( lpcd->bCaretVisible == FALSE )
/*
* No make it visible.
*/
DisplayCaret( lpcd, TRUE );
else
{
/*
* Re-position.
*/
int cy = ( Parser->nCaretType == CARET_HORIZONTAL && ! lpcd->bOverwrite ) ? Parser->szCharSize.cy - ( 2 * GetSystemMetrics( SM_CYBORDER )) : 0;
SetCaretPos( GetMarginWidth( lpcd ) + GetLineMarginWidth( lpcd ) + (( GetCaretOffset( lpcd, lpcd->ptCaretPos.x ) - lpcd->ptViewPos.x ) * Parser->szCharSize.cx ), ( lpcd->ptCaretPos.y - lpcd->ptViewPos.y ) * Parser->szCharSize.cy + cy );
}
}
else if ( lpcd->bCaretVisible == TRUE )
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
}
/*
* Send caret position message.
*/
SendCaretMessage( lpcd );
}
static void MoveViewDown( LPCLASSDATA lpcd )
{
int nLines = ArrayGetSize( lpcd->lpLines ) - 1;
/*
* Are we already at the end?
*/
if ( lpcd->ptCaretPos.y < nLines )
{
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
/*
* Are we on the bottom of the view?
*/
if ( lpcd->ptCaretPos.y == ( lpcd->ptViewPos.y + lpcd->szViewSize.cy - 1 ))
/*
* Move down a page.
*/
lpcd->ptCaretPos.y = min( lpcd->ptCaretPos.y + lpcd->szViewSize.cy - 1, nLines );
else
/*
* Move to the bottom of the page.
*/
lpcd->ptCaretPos.y = min( lpcd->ptViewPos.y + lpcd->szViewSize.cy - 1, nLines );
/*
* Make sure the caret is visible.
*/
MakeCaretVisible( lpcd );
/*
* Show the caret.
*/
DisplayCaret( lpcd, TRUE );
}
}
static void MoveViewUp( LPCLASSDATA lpcd )
{
/*
* Are we on the top?
*/
if ( lpcd->ptCaretPos.y > 0 )
{
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
/*
* Are we on the top of the view?
*/
if ( lpcd->ptCaretPos.y == lpcd->ptViewPos.y )
/*
* Move up a view.
*/
lpcd->ptCaretPos.y = max( 0, lpcd->ptCaretPos.y - lpcd->szViewSize.cy );
else
/*
* Go to the top of the view.
*/
lpcd->ptCaretPos.y = lpcd->ptViewPos.y;
/*
* Make sure the caret is visible.
*/
MakeCaretVisible( lpcd );
/*
* Show the caret.
*/
DisplayCaret( lpcd, TRUE );
}
}
void CScrView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
switch(nChar)
{
case VK_LEFT:
case VK_RIGHT:
case VK_UP:
case VK_DOWN:
case VK_HOME:
case VK_END:
case VK_PRIOR:
case VK_NEXT:
if (MovePos(nChar, nRepCnt, control_down(), shift_down(), caret_mode_))
{
DisplayCaret();
return;
}
break;
}
CView::OnKeyDown(nChar, nRepCnt, nFlags);
}
BOOL Delete( LPCLASSDATA lpcd )
{
/*
* Read only?
*/
if ( ISREADONLY )
return TRUE;
/*
* Do we have a mark and
* is it valid?
*/
if ( HasMark( lpcd ))
{
/*
* Remove the text.
*/
DeleteText( lpcd, &lpcd->ptSelStart, &lpcd->ptSelEnd, TRUE );
/*
* We _must_ have atleast one
* empty line.
*/
if ( ArrayGetSize( lpcd->lpLines ) == 0 )
{
if ( InsertLine( lpcd, NULL, 0, -1, TRUE ) == FALSE )
return FALSE;
}
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
/*
* Move to the start position.
*/
lpcd->ptCaretPos = lpcd->ptSelStart;
/*
* Update column position.
*/
lpcd->nLastColumnPos = GetCaretOffset( lpcd, lpcd->ptCaretPos.x );
/*
* Invalidate marks.
*/
lpcd->ptSelStart.x = lpcd->ptSelStart.y = -1;
lpcd->ptSelEnd.x = lpcd->ptSelEnd.y = -1;
/*
* Is the caret inside
* the view?
*/
if ( CaretInView( lpcd ) == FALSE )
/*
* No. Move the view to
* make it visible.
*/
MakeCaretVisibleNoRedraw( lpcd );
/*
* Re-render.
*/
InvalidateRect( lpcd->hWnd, NULL, FALSE );
/*
* Setup scrollers.
*/
SetupHScroller( lpcd );
SetupVScroller( lpcd );
/*
* We are modified.
*/
SetModified( lpcd, TRUE );
/*
* Send status message.
*/
SendStatusMessage( lpcd );
/*
* Show the caret.
*/
DisplayCaret( lpcd, TRUE );
}
return TRUE;
}
void Paste( LPCLASSDATA lpcd )
{
HANDLE hData;
LPCTSTR lpszText;
BOOL bDeleted = FALSE;
/*
* Are we read-only?
*/
if ( ISREADONLY )
return;
/*
* Valid format on the clipboard?
*/
if ( IsClipboardFormatAvailable( CF_TEXT ) == FALSE )
return;
/*
* Any marks set?
*/
if ( HasMark( lpcd ))
bDeleted = Delete( lpcd );
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
/*
* Open the clipboard.
*/
if ( OpenClipboard( lpcd->hWnd ))
{
/*
* Get data handle.
*/
if (( hData = GetClipboardData( CF_TEXT )) != NULL )
{
/*
* Lock the data.
*/
if (( lpszText = GlobalLock( hData )) != NULL )
{
/*
* Insert the clipboard contents
* into the text.
*/
InsertText( lpcd, lpcd->ptCaretPos.y, lpcd->ptCaretPos.x, lpszText, &lpcd->ptCaretPos, ! bDeleted );
/*
* Unlock the data handle.
*/
GlobalUnlock( hData );
}
}
/*
* Close the clipboard.
*/
CloseClipboard();
}
/*
* Update column position.
*/
lpcd->nLastColumnPos = GetCaretOffset( lpcd, lpcd->ptCaretPos.x );
/*
* Is the caret inside
* the view?
*/
if ( CaretInView( lpcd ) == FALSE )
/*
* No. Move the view to
* make it visible.
*/
MakeCaretVisibleNoRedraw( lpcd );
/*
* Re-render.
*/
InvalidateRect( lpcd->hWnd, NULL, FALSE );
/*
* Setup scrollers.
*/
SetupHScroller( lpcd );
SetupVScroller( lpcd );
/*
* We are modified.
*/
SetModified( lpcd, TRUE );
/*
* Show the caret.
*/
DisplayCaret( lpcd, TRUE );
}
LRESULT OnReplaceSelection( HWND hWnd, WPARAM wParam, LPARAM lParam, LPCLASSDATA lpcd )
{
LPCTSTR lpszText = ( LPCTSTR )lParam;
BOOL bDeleted = FALSE;
/*
* Are we read-only?
*/
if ( ISREADONLY )
return FALSE;
/*
* Any text?
*/
if ( lpszText == NULL || *lpszText == _T( '\0' ))
return FALSE;
/*
* Any marks set? If not return FALSE since we need
* to replace a text selection.
*/
if ( HasMark( lpcd ) == FALSE )
return FALSE;
/*
* Delete the current selection from the text.
*/
bDeleted = Delete( lpcd );
/*
* Hide the caret.
*/
DisplayCaret( lpcd, FALSE );
/*
* Insert the clipboard contents
* into the text.
*/
InsertText( lpcd, lpcd->ptCaretPos.y, lpcd->ptCaretPos.x, lpszText, &lpcd->ptCaretPos, ! bDeleted );
/*
* Update column position.
*/
lpcd->nLastColumnPos = GetCaretOffset( lpcd, lpcd->ptCaretPos.x );
/*
* Is the caret inside
* the view?
*/
if ( CaretInView( lpcd ) == FALSE )
/*
* No. Move the view to
* make it visible.
*/
MakeCaretVisibleNoRedraw( lpcd );
/*
* Re-render.
*/
InvalidateRect( lpcd->hWnd, NULL, FALSE );
/*
* Setup scrollers.
*/
SetupHScroller( lpcd );
SetupVScroller( lpcd );
/*
* We are modified.
*/
SetModified( lpcd, TRUE );
/*
* Show the caret.
*/
DisplayCaret( lpcd, TRUE );
return TRUE;
}
