tests: add testcase for #239, bug number 2
If a window is unmapped during the draw_callback re-run when the screen is just redirected, that window won't get a chance to acquire a pixmap. If fading is enabled, the compositor will try to render that window and crash. Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
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@ -0,0 +1,8 @@
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fading = true;
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fade-in-step = 1;
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fade-out-step = 0.01;
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shadow = true;
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shadow-exclude = [
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"name = 'NoShadow'"
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]
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unredir-if-possible = true;
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@ -5,3 +5,4 @@ cd $(dirname $0)
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./run_one_test.sh $compton configs/empty.conf testcases/basic.py
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./run_one_test.sh $compton configs/issue239.conf testcases/issue239.py
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./run_one_test.sh $compton configs/issue239_2.conf testcases/issue239_2.py
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#!/usr/bin/env python
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import xcffib.xproto as xproto
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import xcffib
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import time
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conn = xcffib.connect()
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setup = conn.get_setup()
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root = setup.roots[0].root
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visual = setup.roots[0].root_visual
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depth = setup.roots[0].root_depth
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# issue 239 is caused by a window gaining a shadow during its fade-out transition
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wid = conn.generate_id()
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print("Window ids are ", hex(wid))
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# Create a window
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mask = xproto.CW.BackPixel
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value = [ setup.roots[0].white_pixel ]
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conn.core.CreateWindowChecked(depth, wid, root, 0, 0, 100, 100, 0, xproto.WindowClass.InputOutput, visual, mask, value).check()
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name = "_NET_WM_STATE"
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name_atom = conn.core.InternAtom(False, len(name), name).reply().atom
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atom = "ATOM"
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atom_atom = conn.core.InternAtom(False, len(atom), atom).reply().atom
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fs = "_NET_WM_STATE_FULLSCREEN"
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fs_atom = conn.core.InternAtom(False, len(fs), fs).reply().atom
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# Map the window
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conn.core.MapWindowChecked(wid).check()
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time.sleep(0.5)
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conn.core.ChangePropertyChecked(xproto.PropMode.Replace, wid, name_atom, atom_atom, 32, 1, [fs_atom]).check()
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time.sleep(0.5)
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conn.core.ChangePropertyChecked(xproto.PropMode.Replace, wid, name_atom, atom_atom, 32, 0, []).check()
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conn.core.GetInputFocus().reply()
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# Unmap the window
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conn.core.UnmapWindowChecked(wid).check()
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time.sleep(0.5)
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# Destroy the window
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conn.core.DestroyWindowChecked(wid).check()
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