/**
* @brief Draws rect indicating visible area in file views.
*
* @param [in] nTopLine New topline for indicator
* @param [in] nBottomLine New bottomline for indicator
* @todo This function dublicates too much DrawRect() code.
*/
void CLocationView::DrawVisibleAreaRect(CDC *pClientDC, int nTopLine, int nBottomLine)
{
CMergeDoc* pDoc = GetDocument();
if (nTopLine == -1)
nTopLine = pDoc->GetRightView()->GetTopSubLine();
if (nBottomLine == -1)
{
const int nScreenLines = pDoc->GetRightView()->GetScreenLines();
nBottomLine = nTopLine + nScreenLines;
}
CRect rc;
GetClientRect(rc);
const int nbLines = min(m_view[MERGE_VIEW_LEFT]->GetSubLineCount(),
m_view[MERGE_VIEW_RIGHT]->GetSubLineCount());
int nTopCoord = static_cast<int>(Y_OFFSET +
(static_cast<double>(nTopLine * m_lineInPix)));
int nBottomCoord = static_cast<int>(Y_OFFSET +
(static_cast<double>(nBottomLine * m_lineInPix)));
double xbarBottom = min(nbLines / m_pixInLines + Y_OFFSET, rc.Height() - Y_OFFSET);
int barBottom = (int)xbarBottom;
// Make sure bottom coord is in bar range
nBottomCoord = min(nBottomCoord, barBottom);
// Ensure visible area is at least minimum height
if (nBottomCoord - nTopCoord < INDICATOR_MIN_HEIGHT)
{
// If area is near top of file, add additional area to bottom
// of the bar and vice versa.
if (nTopCoord < Y_OFFSET + 20)
nBottomCoord += INDICATOR_MIN_HEIGHT - (nBottomCoord - nTopCoord);
else
{
// Make sure locationbox has min hight
if ((nBottomCoord - nTopCoord) < INDICATOR_MIN_HEIGHT)
{
// If we have a high number of lines, it may be better
// to keep the topline, otherwise the cursor can
// jump up and down unexpected
nBottomCoord = nTopCoord + INDICATOR_MIN_HEIGHT;
}
}
}
// Store current values for later use (to check if area changes)
m_visibleTop = nTopCoord;
m_visibleBottom = nBottomCoord;
CRect rcVisibleArea(2, m_visibleTop, rc.right - 2, m_visibleBottom);
CBitmap *pBitmap = CopyRectToBitmap(pClientDC, rcVisibleArea);
CBitmap *pDarkenedBitmap = GetDarkenedBitmap(pClientDC, pBitmap);
DrawBitmap(pClientDC, rcVisibleArea.left, rcVisibleArea.top, pDarkenedBitmap);
delete pDarkenedBitmap;
delete pBitmap;
}
/**
* @brief Handle scroll events sent directly.
*
*/
void CLocationView::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar *pScrollBar)
{
if (pScrollBar == NULL)
{
// Scroll did not come frome a scroll bar
// Send it to the right view instead
CMergeDoc *pDoc = GetDocument();
pDoc->GetRightView()->SendMessage(WM_VSCROLL,
MAKELONG(nSBCode, nPos), (LPARAM)NULL);
return;
}
CView::OnVScroll (nSBCode, nPos, pScrollBar);
}
/**
* @brief Update view.
*/
void CLocationView::OnUpdate( CView* pSender, LPARAM lHint, CObject* pHint )
{
UNREFERENCED_PARAMETER(pSender);
UNREFERENCED_PARAMETER(lHint);
CMergeDoc* pDoc = GetDocument();
m_view[MERGE_VIEW_LEFT] = pDoc->GetLeftView();
m_view[MERGE_VIEW_RIGHT] = pDoc->GetRightView();
// Give pointer to MergeEditView
m_view[MERGE_VIEW_LEFT]->SetLocationView(this);
m_view[MERGE_VIEW_RIGHT]->SetLocationView(this);
m_bRecalculateBlocks = TRUE;
Invalidate();
}
