void wxListBox::DoDraw(wxControlRenderer *renderer)
{
// adjust the DC to account for scrolling
wxDC& dc = renderer->GetDC();
PrepareDC(dc);
dc.SetFont(GetFont());
// get the update rect
wxRect rectUpdate = GetUpdateClientRect();
int yTop, yBottom;
CalcUnscrolledPosition(0, rectUpdate.GetTop(), NULL, &yTop);
CalcUnscrolledPosition(0, rectUpdate.GetBottom(), NULL, &yBottom);
// get the items which must be redrawn
wxCoord lineHeight = GetLineHeight();
size_t itemFirst = yTop / lineHeight,
itemLast = (yBottom + lineHeight - 1) / lineHeight,
itemMax = m_strings->GetCount();
if ( itemFirst >= itemMax )
return;
if ( itemLast > itemMax )
itemLast = itemMax;
// do draw them
wxLogTrace(_T("listbox"), _T("Repainting items %d..%d"),
itemFirst, itemLast);
DoDrawRange(renderer, itemFirst, itemLast);
}
void wxVListBox::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxSize clientSize = GetClientSize();
wxAutoBufferedPaintDC dc(this);
// the update rectangle
wxRect rectUpdate = GetUpdateClientRect();
// fill it with background colour
dc.SetBackground(GetBackgroundColour());
dc.Clear();
// the bounding rectangle of the current line
wxRect rectLine;
rectLine.width = clientSize.x;
// iterate over all visible lines
const size_t lineMax = GetVisibleEnd();
for ( size_t line = GetFirstVisibleLine(); line < lineMax; line++ )
{
const wxCoord hLine = OnGetLineHeight(line);
rectLine.height = hLine;
// and draw the ones which intersect the update rect
if ( rectLine.Intersects(rectUpdate) )
{
// don't allow drawing outside of the lines rectangle
wxDCClipper clip(dc, rectLine);
wxRect rect = rectLine;
OnDrawBackground(dc, rect, line);
OnDrawSeparator(dc, rect, line);
rect.Deflate(m_ptMargins.x, m_ptMargins.y);
OnDrawItem(dc, rect, line);
}
else // no intersection
{
if ( rectLine.GetTop() > rectUpdate.GetBottom() )
{
// we are already below the update rect, no need to continue
// further
break;
}
//else: the next line may intersect the update rect
}
rectLine.y += hLine;
}
}
void wxSymbolListCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
{
// If size is larger, recalculate double buffer bitmap
wxSize clientSize = GetClientSize();
if ( !m_doubleBuffer ||
clientSize.x > m_doubleBuffer->GetWidth() ||
clientSize.y > m_doubleBuffer->GetHeight() )
{
delete m_doubleBuffer;
m_doubleBuffer = new wxBitmap(clientSize.x+25,clientSize.y+25);
}
wxBufferedPaintDC dc(this,*m_doubleBuffer);
// the update rectangle
wxRect rectUpdate = GetUpdateClientRect();
// fill it with background colour
dc.SetBackground(GetBackgroundColour());
dc.Clear();
// set the font to be displayed
dc.SetFont(GetFont());
// the bounding rectangle of the current line
wxRect rectRow;
rectRow.width = clientSize.x;
dc.SetPen(wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT)));
dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
// iterate over all visible lines
const size_t lineMax = GetVisibleEnd();
for ( size_t line = GetVisibleBegin(); line < lineMax; line++ )
{
const wxCoord hRow = OnGetRowHeight(line);
rectRow.height = hRow;
// and draw the ones which intersect the update rect
if ( rectRow.Intersects(rectUpdate) )
{
// don't allow drawing outside of the lines rectangle
wxDCClipper clip(dc, rectRow);
wxRect rect = rectRow;
rect.Deflate(m_ptMargins.x, m_ptMargins.y);
OnDrawItem(dc, rect, line);
}
else // no intersection
{
if ( rectRow.GetTop() > rectUpdate.GetBottom() )
{
// we are already below the update rect, no need to continue
// further
break;
}
//else: the next line may intersect the update rect
}
rectRow.y += hRow;
}
}
void OnDraw(wxDC& dc)
{
dc.SetBackground(m_view->GetBackgroundColour());
dc.Clear();
dc.SetFont(m_view->GetFont());
wxRect updateRect = GetUpdateClientRect();
updateRect.SetPosition(CalcUnscrolledPosition(updateRect.GetPosition()));
int startRow = updateRect.GetTop() / m_rowHeight;
int endRow = std::ceil(updateRect.GetBottom() / (double)m_rowHeight);
if (endRow > m_view->m_dataSize / m_view->m_rowsize)
endRow = m_view->m_dataSize / m_view->m_rowsize;
wxSize offsetSize = dc.GetTextExtent("00000000");
offsetSize.x += 4;
wxSize byteSize = dc.GetTextExtent("00");
byteSize.x += 2;
wxRect visRect = GetClientSize();
wxPoint viewStart = GetViewStart();
for (int row = startRow; row <= endRow; ++row)
{
int offset = row * m_view->m_rowsize;
wxPoint rowPos = wxPoint(2, (row * m_rowHeight) + 2);
int rowsize = m_view->m_rowsize;
if (offset + rowsize > m_view->m_dataSize)
rowsize = m_view->m_dataSize - offset;
// Draw offset
dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
dc.DrawText(wxString::Format("%.8X", offset), rowPos);
rowPos.x += offsetSize.GetWidth();
// Draw row values
dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
for (int i = 0; i < m_view->m_rowsize; ++i)
{
if (i < rowsize)
dc.DrawText(wxString::Format("%.2X", m_view->m_data[offset + i]), rowPos);
rowPos.x += byteSize.GetWidth();
}
rowPos.x += m_charWidth;
// Draw row characters
wxString str((const char*)&m_view->m_data[offset], rowsize);
for (auto it = str.begin(); it != str.end(); ++it)
{
if (*it < 32)
*it = '.';
}
dc.DrawText(str, rowPos);
rowPos.y += m_rowHeight;
}
}
