-void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
-{
- wxDataViewModel *model = GetOwner()->GetModel();
- wxAutoBufferedPaintDC dc( this );
-
- // prepare the DC
- dc.SetBackground(GetBackgroundColour());
- dc.Clear();
- GetOwner()->PrepareDC( dc );
- dc.SetFont( GetFont() );
-
- wxRect update = GetUpdateRegion().GetBox();
- m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
-
- // compute which items needs to be redrawn
- unsigned int item_start = wxMax( 0, (update.y / m_lineHeight) );
- unsigned int item_count =
- wxMin( (int)(((update.y + update.height) / m_lineHeight) - item_start + 1),
- (int)(GetRowCount( )- item_start) );
- unsigned int item_last = item_start + item_count;
-
- // compute which columns needs to be redrawn
- unsigned int cols = GetOwner()->GetColumnCount();
- unsigned int col_start = 0;
- unsigned int x_start = 0;
- for (x_start = 0; col_start < cols; col_start++)
- {
- wxDataViewColumn *col = GetOwner()->GetColumn(col_start);
- if (col->IsHidden())
- continue; // skip it!
-
- unsigned int w = col->GetWidth();
- if (x_start+w >= (unsigned int)update.x)
- break;
-
- x_start += w;
- }
-
- unsigned int col_last = col_start;
- unsigned int x_last = x_start;
- for (; col_last < cols; col_last++)
- {
- wxDataViewColumn *col = GetOwner()->GetColumn(col_last);
- if (col->IsHidden())
- continue; // skip it!
-
- if (x_last > (unsigned int)update.GetRight())
- break;
-
- x_last += col->GetWidth();
- }
-
- // Draw horizontal rules if required
- if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
- {
- dc.SetPen(m_penRule);
- dc.SetBrush(*wxTRANSPARENT_BRUSH);
-
- for (unsigned int i = item_start; i <= item_last+1; i++)
- {
- int y = i * m_lineHeight;
- dc.DrawLine(x_start, y, x_last, y);
- }
- }
-
- // Draw vertical rules if required
- if ( m_owner->HasFlag(wxDV_VERT_RULES) )
- {
- dc.SetPen(m_penRule);
- dc.SetBrush(*wxTRANSPARENT_BRUSH);
-
- int x = x_start;
- for (unsigned int i = col_start; i < col_last; i++)
- {
- wxDataViewColumn *col = GetOwner()->GetColumn(i);
- if (col->IsHidden())
- continue; // skip it
-
- dc.DrawLine(x, item_start * m_lineHeight,
- x, item_last * m_lineHeight);
-
- x += col->GetWidth();
- }
-
- // Draw last vertical rule
- dc.DrawLine(x, item_start * m_lineHeight,
- x, item_last * m_lineHeight);
- }
-
- // redraw the background for the items which are selected/current
- for (unsigned int item = item_start; item < item_last; item++)
- {
- bool selected = m_selection.Index( item ) != wxNOT_FOUND;
- if (selected || item == m_currentRow)
- {
- int flags = selected ? (int)wxCONTROL_SELECTED : 0;
- if (item == m_currentRow)
- flags |= wxCONTROL_CURRENT;
- if (m_hasFocus)
- flags |= wxCONTROL_FOCUSED;
-
- wxRect rect( x_start, item*m_lineHeight, x_last, m_lineHeight );
- wxRendererNative::Get().DrawItemSelectionRect
- (
- this,
- dc,
- rect,
- flags
- );
- }
- }
-
- wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
- if (!expander)
- {
- // TODO: last column for RTL support
- expander = GetOwner()->GetColumn( 0 );
- }
-
- // redraw all cells for all rows which must be repainted and for all columns
- wxRect cell_rect;
- cell_rect.x = x_start;
- cell_rect.height = m_lineHeight; // -1 is for the horizontal rules
- for (unsigned int i = col_start; i < col_last; i++)
- {
- wxDataViewColumn *col = GetOwner()->GetColumn( i );
- wxDataViewRenderer *cell = col->GetRenderer();
- cell_rect.width = col->GetWidth();
-
- if (col->IsHidden())
- continue; // skipt it!
-
-
- for (unsigned int item = item_start; item < item_last; item++)
- {
- // get the cell value and set it into the renderer
- wxVariant value;
- wxDataViewTreeNode * node = GetTreeNodeByRow(item);
- if( node == NULL )
- {
- continue;
- }
-
- wxDataViewItem dataitem = node->GetItem();
- model->GetValue( value, dataitem, col->GetModelColumn());
- cell->SetValue( value );
-
- // update the y offset
- cell_rect.y = item * m_lineHeight;
-
- //Draw the expander here.
- int indent = node->GetIndentLevel();
- if( col == expander )
- {
- //Calculate the indent first
- indent = cell_rect.x + GetOwner()->GetIndent() * indent;
-
- int expander_width = m_lineHeight - 2*EXPANDER_MARGIN;
- // change the cell_rect.x to the appropriate pos
- int expander_x = indent + EXPANDER_MARGIN , expander_y = cell_rect.y + EXPANDER_MARGIN ;
- indent = indent + m_lineHeight ; //try to use the m_lineHeight as the expander space
- dc.SetPen( m_penExpander );
- dc.SetBrush( wxNullBrush );
- if( node->HasChildren() )
- {
- //dc.DrawRoundedRectangle( expander_x,expander_y,expander_width,expander_width, 1.0);
- //dc.DrawLine( expander_x + 2 , expander_y + expander_width/2, expander_x + expander_width - 2, expander_y + expander_width/2 );
- wxRect rect( expander_x , expander_y, expander_width, expander_width);
- if( node->IsOpen() )
- wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, wxCONTROL_EXPANDED );
- else
- wxRendererNative::Get().DrawTreeItemButton( this, dc, rect );
- }
- else
- {
- // I am wandering whether we should draw dot lines between tree nodes
- delete node;
- //Yes, if the node does not have any child, it must be a leaf which mean that it is a temporarily created by GetTreeNodeByRow
- }
-
- //force the expander column to left-center align
- cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
- }
-
-
- // cannot be bigger than allocated space
- wxSize size = cell->GetSize();
- // Because of the tree structure indent, here we should minus the width of the cell for drawing
- size.x = wxMin( size.x + 2*PADDING_RIGHTLEFT, cell_rect.width - indent );
- size.y = wxMin( size.y + 2*PADDING_TOPBOTTOM, cell_rect.height );
-
- wxRect item_rect(cell_rect.GetTopLeft(), size);
- int align = cell->GetAlignment();
-
- // horizontal alignment:
- item_rect.x = cell_rect.x;
- if (align & wxALIGN_CENTER_HORIZONTAL)
- item_rect.x = cell_rect.x + (cell_rect.width / 2) - (size.x / 2);
- else if (align & wxALIGN_RIGHT)
- item_rect.x = cell_rect.x + cell_rect.width - size.x;
- //else: wxALIGN_LEFT is the default
-
- // vertical alignment:
- item_rect.y = cell_rect.y;
- if (align & wxALIGN_CENTER_VERTICAL)
- item_rect.y = cell_rect.y + (cell_rect.height / 2) - (size.y / 2);
- else if (align & wxALIGN_BOTTOM)
- item_rect.y = cell_rect.y + cell_rect.height - size.y;
- //else: wxALIGN_TOP is the default
-
- // add padding
- item_rect.x += PADDING_RIGHTLEFT;
- item_rect.y += PADDING_TOPBOTTOM;
- item_rect.width = size.x - 2 * PADDING_RIGHTLEFT;
- item_rect.height = size.y - 2 * PADDING_TOPBOTTOM;
-
- //Here we add the tree indent
- item_rect.x += indent;
-
- int state = 0;
- if (m_selection.Index(item) != wxNOT_FOUND)
- state |= wxDATAVIEW_CELL_SELECTED;
-
- // TODO: it would be much more efficient to create a clipping
- // region for the entire column being rendered (in the OnPaint
- // of wxDataViewMainWindow) instead of a single clip region for
- // each cell. However it would mean that each renderer should
- // respect the given wxRect's top & bottom coords, eventually
- // violating only the left & right coords - however the user can
- // make its own renderer and thus we cannot be sure of that.
- dc.SetClippingRegion( item_rect );
- cell->Render( item_rect, &dc, state );
- dc.DestroyClippingRegion();
- }
-
- cell_rect.x += cell_rect.width;
- }
-}
-
projects / wxWidgets.git / blobdiff