Draw_* over child window

[mnimonah]

Hi, can anyone give me a hint how to draw_* over a child window? I have a windows with some plots, child_windows etc. i need to put some additional information over the plot but it draws in a background(
here is my example code:

import dearpygui.dearpygui as dpg

dpg.create_context()
with dpg.window(tag="Primary Window"):
    with dpg.draw_layer():
        dpg.draw_circle((-0, -0), 25, color=(100, 255, 200, 255))
        dpg.draw_circle((10, 10), 25, color=(100, 155, 200, 255))
    with dpg.child_window(tag="tool_win_oscope", show=True, border=False):
        with dpg.group(horizontal=False, label="sgrp"):
            with dpg.child_window():
                dpg.add_plot()
dpg.create_viewport()
dpg.set_primary_window("Primary Window", True)
dpg.setup_dearpygui()
dpg.show_viewport()
dpg.set_viewport_vsync(True)
dpg.start_dearpygui()
dpg.destroy_context()

thanks

[v-ein]

First of all, place the drawing primitives into the child window that you want to draw on. Use a dpg.drawlist as a parent. Then, since you want to draw on top of the plot, you need to overlay two items. This can be done in multiple ways, the easiest is to specify pos on one of the the widgets. Your drawlist should go after the plot because the items are rendered in the order they are created (if they belong to the same slot). Also, for some reason pos on drawlist didn't work for me, probably due to a bug. This can be circumvented by placing it into a group an specifying pos on that group.

Now, gathering this all together...

import dearpygui.dearpygui as dpg

dpg.create_context()
with dpg.window(tag="Primary Window"):
    with dpg.child_window(tag="tool_win_oscope", show=True, border=False):
        with dpg.group(horizontal=False, label="sgrp"):
            with dpg.child_window():
                dpg.add_plot()
                with dpg.group(pos=(0, 0)):
                    with dpg.drawlist(200, 100):
                        with dpg.draw_layer():
                            dpg.draw_circle((-0, -0), 25, color=(100, 255, 200, 255))
                            dpg.draw_circle((10, 10), 25, color=(100, 155, 200, 255))

dpg.create_viewport()
dpg.set_primary_window("Primary Window", True)
dpg.setup_dearpygui()
dpg.show_viewport()
dpg.set_viewport_vsync(True)
dpg.start_dearpygui()
dpg.destroy_context()

[mnimonah]

ah.. now i cant get access to the plot - no pan and zoom, i guess drawlist is intercepting mouse events (

[v-ein]

You can make it exactly the width and height that you need. What are you going to render on top of the plot?

[mnimonah]

i came to the same conclusion, i want to render some signal characteristics in small boxes, something like on a image:

[v-ein]

Try to place buttons into a group instead of a drawlist. The buttons will probably not receive mouse events because the plot will get them first, but if all you need is to display text in a frame, buttons will do just fine. Alternatively, you can always display things outside of the plot :).

[mnimonah]

Thanks! Worked like a charm!