Method DrawLegend

Explore/MapLayerTree.cpp:910–967

}

void MapTree::DrawLegend(wxDC& dc, int x, int y, wxString text)
{
    int x_org = x;
    
    wxPen pen(*wxBLACK, 1, wxPENSTYLE_DOT);
    dc.SetPen(pen);
    dc.DrawLine(10, y+2, x, y+2);
    
    BackgroundMapLayer* ml = GetMapLayer(text);

    x = x + 45; // switch width
    dc.SetPen(*wxBLACK_PEN);
    if (text == current_map_title) {
        dc.SetPen(*wxLIGHT_GREY);
        dc.SetBrush(*wxTRANSPARENT_BRUSH);
    } else {
        if (ml == NULL)
            return; // in case of removed layer
        wxPen pen(ml->GetPenColour(), ml->GetPenSize());
        wxBrush brush(ml->GetBrushColour());
        dc.SetPen(pen);
        dc.SetBrush(brush);
        dc.DrawRectangle(x, y, leg_w, leg_h);
    }
    
    x = x + leg_w + leg_pad_x;
    
    // add highlight/all
    AssociateLayerInt* ml_int;
    if (ml) {
        ml_int = ml;
    } else {
        ml_int = canvas;
    }
    int hl_cnt = ml_int->GetHighlightRecords();
    int all_cnt = ml_int->GetNumRecords();
    wxString hl_str = wxString::Format(" (%d/%d selected)", hl_cnt, all_cnt);
    text = text + hl_str;
    dc.DrawText(text, x, y);
    
    // draw switch button
    wxString ds_thumb = "switch-on.png";
    if (ml_int->IsHide()) ds_thumb = "switch-off.png";
    wxString file_path_str = GenUtils::GetSamplesDir() + ds_thumb;
    
    wxImage img;
    if (!wxFileExists(file_path_str)) {
        return;
    }
    
    img.LoadFile(file_path_str);
    if (!img.IsOk()) {
        return;
    }
    
    wxBitmap bmp(img);
    dc.DrawBitmap(bmp, x_org, y);
}