toggleDrawing method
Opens or closes the drawing toolbar.
Implementation
void toggleDrawing([bool? open]) {
final bool next = open ?? !_drawOpen;
if (next && _toolsOpen) {
_toolsOpen = false;
editor?.setTool(UPdfTool.select);
}
if (next && !_draw.isActive) _draw.tool = UDocDrawTool.pen;
if (!next) _draw.tool = UDocDrawTool.none;
_clearSelection();
applyState(() {
_drawOpen = next;
_activeMarkup = null;
});
}