render
Description:
public abstract void render (Context cr, Widget widget, Rectangle background_area, Rectangle cell_area, CellRendererState flags)
Invokes the virtual render function of the CellRenderer.
The three passed-in rectangles are areas in cr. Most renderers will draw within cell_area; the xalign, yalign, xpad,
and ypad fields of the CellRenderer should be honored with respect to
cell_area. background_area includes the blank space around the cell, and also the area containing the tree expander;
so the background_area rectangles for all cells tile to cover the entire window.
Parameters:
| this | |
| cr |
a cairo context to draw to |
| widget |
the widget owning |
| background_area |
entire cell area (including tree expanders and maybe padding on the sides) |
| cell_area |
area normally rendered by a cell renderer |
| flags |
flags that affect rendering |