+// Example using wxGrid::Render
+// Displays a preset selection or, if it exists, a selection block
+// Draws the selection to a wxBitmap and displays the bitmap
+void GridFrame::OnGridRender( wxCommandEvent& event )
+{
+ int styleRender = 0, i;
+ bool useLometric = false, defSize = false;
+ double zoom = 1;
+ wxSize sizeMargin( 0, 0 );
+ wxPoint pointOrigin( 0, 0 );
+
+ wxMenu* menu = GetMenuBar()->GetMenu( 0 );
+ wxMenuItem* menuItem = menu->FindItem( ID_RENDER_ROW_LABEL );
+ menu = menuItem->GetMenu();
+
+ if ( menu->FindItem( ID_RENDER_ROW_LABEL )->IsChecked() )
+ styleRender |= wxGRID_DRAW_ROWS_HEADER;
+ if ( menu->FindItem( ID_RENDER_COL_LABEL )->IsChecked() )
+ styleRender |= wxGRID_DRAW_COLS_HEADER;
+ if ( menu->FindItem( ID_RENDER_GRID_LINES )->IsChecked() )
+ styleRender |= wxGRID_DRAW_CELL_LINES;
+ if ( menu->FindItem( ID_RENDER_GRID_BORDER )->IsChecked() )
+ styleRender |= wxGRID_DRAW_BOX_RECT;
+ if ( menu->FindItem( ID_RENDER_SELECT_HLIGHT )->IsChecked() )
+ styleRender |= wxGRID_DRAW_SELECTION;
+ if ( menu->FindItem( ID_RENDER_LOMETRIC )->IsChecked() )
+ useLometric = true;
+ if ( menu->FindItem( ID_RENDER_MARGIN )->IsChecked() )
+ {
+ pointOrigin.x += 50;
+ pointOrigin.y += 50;
+ sizeMargin.IncBy( 50 );
+ }
+ if ( menu->FindItem( ID_RENDER_ZOOM )->IsChecked() )
+ zoom = 1.25;
+ if ( menu->FindItem( ID_RENDER_DEFAULT_SIZE )->IsChecked() )
+ defSize = true;
+
+ // init render area coords with a default row and col selection
+ wxGridCellCoords topLeft( 0, 0 ), bottomRight( 8, 6 );
+ // check whether we are printing a block selection
+ // other selection types not catered for here
+ if ( event.GetId() == ID_RENDER_COORDS )
+ {
+ topLeft.SetCol( 6 );
+ topLeft.SetRow( 4 );
+ bottomRight.SetCol( 15 );
+ bottomRight.SetRow( 29 );
+ }
+ else if ( grid->IsSelection() && grid->GetSelectionBlockTopLeft().Count() )
+ {
+ wxGridCellCoordsArray cells = grid->GetSelectionBlockTopLeft();
+ if ( grid->GetSelectionBlockBottomRight().Count() )
+ {
+ cells.Add( grid->GetSelectionBlockBottomRight()[ 0 ] );
+ topLeft.Set( cells[ 0 ].GetRow(),
+ cells[ 0 ].GetCol() );
+ bottomRight.Set( cells[ 1 ].GetRow(),
+ cells[ 1 ].GetCol() );
+ }
+ }
+
+ // sum col widths
+ wxSize sizeRender( 0, 0 );
+ wxGridSizesInfo sizeinfo = grid->GetColSizes();
+ for ( i = topLeft.GetCol(); i <= bottomRight.GetCol(); i++ )
+ {
+ sizeRender.x += sizeinfo.GetSize( i );
+ }
+
+ // sum row heights
+ sizeinfo = grid->GetRowSizes();
+ for ( i = topLeft.GetRow(); i <= bottomRight.GetRow(); i++ )
+ {
+ sizeRender.y += sizeinfo.GetSize( i );
+ }
+
+ if ( styleRender & wxGRID_DRAW_ROWS_HEADER )
+ sizeRender.x += grid->GetRowLabelSize();
+ if ( styleRender & wxGRID_DRAW_COLS_HEADER )
+ sizeRender.y += grid->GetColLabelSize();
+
+ sizeRender.x *= zoom;
+ sizeRender.y *= zoom;
+
+ // delete any existing render frame and create new one
+ wxWindow* win = FindWindow( "frameRender" );
+ if ( win )
+ win->Destroy();
+
+ wxFrame* frame = new wxFrame( this, wxID_ANY, "Grid Render" );
+ frame->SetClientSize( 780, 400 );
+ frame->SetName( "frameRender" );
+
+ wxPanel* canvas = new wxPanel( frame, wxID_ANY );
+
+ // make bitmap large enough for margins if any
+ if ( !defSize )
+ sizeRender.IncBy( sizeMargin * 2 );
+ else
+ sizeRender.IncBy( sizeMargin );
+
+ wxBitmap bmp( sizeRender );
+ // don't leave it larger or drawing will be scaled
+ sizeRender.DecBy( sizeMargin * 2 );
+
+ wxMemoryDC memDc(bmp);
+
+ // default row labels have no background colour so set background
+ memDc.SetBackground( wxBrush( canvas->GetBackgroundColour() ) );
+ memDc.Clear();
+
+ // convert sizeRender to mapping mode units if necessary
+ if ( useLometric )
+ {
+ memDc.SetMapMode( wxMM_LOMETRIC );
+ sizeRender.x = memDc.DeviceToLogicalXRel( sizeRender.x );
+ sizeRender.y = memDc.DeviceToLogicalYRel( sizeRender.y );
+ }
+
+ // pass wxDefaultSize if menu item is checked
+ if ( defSize )
+ sizeRender = wxDefaultSize;
+
+ grid->Render( memDc,
+ pointOrigin,
+ sizeRender,
+ topLeft, bottomRight,
+ wxGridRenderStyle( styleRender ) );
+
+ m_gridBitmap = bmp;
+
+ canvas->Connect( wxEVT_PAINT,
+ wxPaintEventHandler(GridFrame::OnRenderPaint),
+ NULL,
+ this );
+
+ frame->Show();
+}
+
+void GridFrame::OnRenderPaint( wxPaintEvent& event )
projects / wxWidgets.git / blobdiff