void ScrollViewUp( LPCLASSDATA lpcd )
{
int nLines = ArrayGetSize( lpcd->lpLines ) - 1;
/*
* Are we there already?
*/
if (( lpcd->ptViewPos.y + lpcd->szViewSize.cy - 1 ) < nLines )
{
/*
* Go down one.
*/
lpcd->ptViewPos.y++;
VScroll( lpcd, -1 );
/*
* Setup the scroller.
*/
SetupVScroller( lpcd );
/*
* Caret OK?
*/
if ( lpcd->ptCaretPos.y < lpcd->ptViewPos.y )
{
/*
* Make it visible.
*/
lpcd->ptCaretPos.y = lpcd->ptViewPos.y;
lpcd->ptCaretPos.x = lpcd->nLastColumnPos = 0;
UpdateCaret( lpcd );
}
}
}
void ScrollViewDown( LPCLASSDATA lpcd )
{
/*
* Are we there already?
*/
if ( lpcd->ptViewPos.y > 0 )
{
/*
* Go up one.
*/
lpcd->ptViewPos.y--;
VScroll( lpcd, 1 );
/*
* Setup the scroller.
*/
SetupVScroller( lpcd );
/*
* Caret OK?
*/
if ( lpcd->ptCaretPos.y > ( lpcd->ptViewPos.y + lpcd->szViewSize.cy - 1 ))
{
/*
* Make it visible.
*/
lpcd->ptCaretPos.y = lpcd->ptViewPos.y + lpcd->szViewSize.cy - 1;
lpcd->ptCaretPos.x = lpcd->nLastColumnPos = 0;
UpdateCaret( lpcd );
}
}
}
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;
}
static void MakeVisible( LPCLASSDATA lpcd, BOOL bRedraw )
{
int nDiffY = lpcd->ptViewPos.y;
BOOL bRender = FALSE;
/*
* Is the caret visible?
*/
if ( CaretInView( lpcd ) == FALSE )
{
/*
* Get "real" caret position.
*/
int nXPos = GetCaretOffset( lpcd, lpcd->ptCaretPos.x );
/*
* Is it in the view horizontally?
*/
if (( nXPos < lpcd->ptViewPos.x ) || ( nXPos > lpcd->ptViewPos.x + ( lpcd->szViewSize.cx - 1 )))
{
lpcd->ptViewPos.x = max( 0, nXPos - ( lpcd->szViewSize.cx ) / 2 );
bRender = TRUE;
}
/*
* Is it in the view vertically?
*/
if ( lpcd->ptCaretPos.y < lpcd->ptViewPos.y )
{
lpcd->ptViewPos.y = lpcd->ptCaretPos.y;
}
else if ( lpcd->ptCaretPos.y > lpcd->ptViewPos.y + ( lpcd->szViewSize.cy - 1 ))
{
lpcd->ptViewPos.y = max( 0, lpcd->ptCaretPos.y - ( lpcd->szViewSize.cy - 1 ));
}
/*
* Redraw?
*/
if ( bRedraw )
{
/*
* Compute difference in Y direction.
*/
nDiffY = nDiffY - lpcd->ptViewPos.y;
/*
* View moved?
*/
if ( nDiffY != 0 && bRender == FALSE )
{
/*
* Scroll view.
*/
VScroll( lpcd, nDiffY );
/*
* Setup vertical scroller.
*/
SetupVScroller( lpcd );
}
else if ( bRender == TRUE )
{
/*
* Setup scrollers.
*/
SetupHScroller( lpcd );
SetupVScroller( lpcd );
/*
* Re-render.
*/
InvalidateRect( lpcd->hWnd, NULL, TRUE );
}
}
}
}