.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/imgui_multi_canvas.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_gallery_imgui_multi_canvas.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_imgui_multi_canvas.py:


ImGui Multi-Canvas
------------------


Example showing how to use multiple imgui contexts to draw to multiple canvases

.. GENERATED FROM PYTHON SOURCE LINES 8-92

.. code-block:: Python


    # run_example = false

    import wgpu
    from imgui_bundle import imgui
    from rendercanvas.auto import RenderCanvas, loop
    from wgpu.utils.imgui import ImguiRenderer

    # Create a canvas to render to
    canvas1 = RenderCanvas(title="imgui", size=(512, 256))
    canvas2 = RenderCanvas(title="imgui", size=(512, 256))
    canvas3 = RenderCanvas(title="imgui", size=(512, 256))

    canvases = [canvas1, canvas2, canvas3]

    # Create a wgpu device
    adapter = wgpu.gpu.request_adapter_sync(power_preference="high-performance")
    device = adapter.request_device_sync()

    # create an imgui renderer for each canvas
    imgui_renderer1 = ImguiRenderer(device, canvas1)
    imgui_renderer2 = ImguiRenderer(device, canvas2)
    imgui_renderer3 = ImguiRenderer(device, canvas3)


    # Separate GUIs that are drawn to each canvas
    def update_gui1():
        imgui.set_next_window_size((300, 0), imgui.Cond_.appearing)
        imgui.set_next_window_pos((0, 20), imgui.Cond_.appearing)

        imgui.begin("window1", None)
        imgui.button("b1")

        imgui.end()


    def update_gui2():
        imgui.set_next_window_size((300, 0), imgui.Cond_.appearing)
        imgui.set_next_window_pos((0, 20), imgui.Cond_.appearing)

        imgui.begin("window2", None)
        imgui.button("b2")

        imgui.end()


    def update_gui3():
        imgui.set_next_window_size((300, 0), imgui.Cond_.appearing)
        imgui.set_next_window_pos((0, 20), imgui.Cond_.appearing)

        imgui.begin("window3", None)
        imgui.button("b3")

        imgui.end()


    # give the corresponding gui updater functions to the imgui renderers
    imgui_renderer1.set_gui(update_gui1)
    imgui_renderer2.set_gui(update_gui2)
    imgui_renderer3.set_gui(update_gui3)


    # draw function for each canvas
    def draw1():
        imgui_renderer1.render()
        canvas1.request_draw()


    def draw2():
        imgui_renderer2.render()
        canvas2.request_draw()


    def draw3():
        imgui_renderer3.render()
        canvas3.request_draw()


    if __name__ == "__main__":
        canvas1.request_draw(draw1)
        canvas2.request_draw(draw2)
        canvas3.request_draw(draw3)

        loop.run()


.. _sphx_glr_download_gallery_imgui_multi_canvas.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: imgui_multi_canvas.ipynb <imgui_multi_canvas.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: imgui_multi_canvas.py <imgui_multi_canvas.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: imgui_multi_canvas.zip <imgui_multi_canvas.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_