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275 lines (232 loc) · 9.84 KB
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# Copyright (c) 2018 CEF Python, see the Authors file.
# All rights reserved. Licensed under BSD 3-clause license.
# Project website: https://github.com/cztomczak/cefpython
"""Off-screen rendering tests."""
import unittest
# noinspection PyUnresolvedReferences
import _test_runner
from _common import *
from cefpython3 import cefpython as cef
import sys
g_datauri_data = """
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body,html {
font-family: Arial;
font-size: 11pt;
}
</style>
<script>
function print(msg) {
console.log(msg+" [JS]");
msg = msg.replace("ok", "<b style='color:green'>ok</b>");
msg = msg.replace("error", "<b style='color:red'>error</b>");
document.getElementById("console").innerHTML += msg+"<br>";
}
function onload_helper() {
if (!window.hasOwnProperty("cefpython_version")) {
// Sometimes page could finish loading before javascript
// bindings are available. Javascript bindings are sent
// from the browser process to the renderer process via
// IPC messaging and it can take some time (5-10ms). If
// the page loads very fast window.onload could execute
// before bindings are available.
setTimeout(onload_helper, 10);
return;
}
version = cefpython_version
print("CEF Python: <b>"+version.version+"</b>");
print("Chrome: <b>"+version.chrome_version+"</b>");
print("CEF: <b>"+version.cef_version+"</b>");
js_code_completed();
}
window.onload = function() {
print("window.onload() ok");
onload_helper();
}
</script>
</head>
<body>
<!-- FrameSourceVisitor hash = 747ef3e6011b6a61e6b3c6e54bdd2dee -->
<h1>Off-screen rendering test</h1>
<div id="console"></div>
<div id="OnTextSelectionChanged">Test selection.</div>
</body>
</html>
"""
g_datauri = cef.GetDataUrl(g_datauri_data)
class OsrTest_IsolatedTest(unittest.TestCase):
def test_osr(self):
"""Main entry point. All the code must run inside one
single test, otherwise strange things happen."""
print("")
print("CEF Python {ver}".format(ver=cef.__version__))
print("Python {ver}".format(ver=sys.version[:6]))
# Application settings
settings = {
"debug": False,
"log_severity": cef.LOGSEVERITY_ERROR,
"log_file": "",
"windowless_rendering_enabled": True
}
if not LINUX:
# On Linux you get a lot of "X error received" messages
# from Chromium's "x11_util.cc", so do not show them.
settings["log_severity"] = cef.LOGSEVERITY_WARNING
if "--debug" in sys.argv:
settings["debug"] = True
settings["log_severity"] = cef.LOGSEVERITY_INFO
if "--debug-warning" in sys.argv:
settings["debug"] = True
settings["log_severity"] = cef.LOGSEVERITY_WARNING
switches = {
# GPU acceleration is not supported in OSR mode, so must disable
# it using these Chromium switches (Issue #240 and #463)
"disable-gpu": "",
"disable-gpu-compositing": "",
# Tweaking OSR performance by setting the same Chromium flags
# as in upstream cefclient (Issue #240).
"enable-begin-frame-scheduling": "",
"disable-surfaces": "", # This is required for PDF ext to work
}
browser_settings = {
# Tweaking OSR performance (Issue #240)
"windowless_frame_rate": 30, # Default frame rate in CEF is 30
}
# Initialize
cef.Initialize(settings=settings, switches=switches)
subtest_message("cef.Initialize() ok")
# Accessibility handler
accessibility_handler = AccessibilityHandler(self)
cef.SetGlobalClientHandler(accessibility_handler)
subtest_message("cef.SetGlobalClientHandler() ok")
# Global handler
global_handler = GlobalHandler(self)
cef.SetGlobalClientCallback("OnAfterCreated",
global_handler._OnAfterCreated)
subtest_message("cef.SetGlobalClientCallback() ok")
# Create browser
window_info = cef.WindowInfo()
window_info.SetAsOffscreen(0)
browser = cef.CreateBrowserSync(window_info=window_info,
settings=browser_settings,
url=g_datauri)
# Javascript bindings
bindings = cef.JavascriptBindings(
bindToFrames=False, bindToPopups=False)
bindings.SetFunction("js_code_completed", js_code_completed)
bindings.SetProperty("cefpython_version", cef.GetVersion())
browser.SetJavascriptBindings(bindings)
subtest_message("browser.SetJavascriptBindings() ok")
# Enable accessibility
browser.SetAccessibilityState(cef.STATE_ENABLED)
subtest_message("cef.SetAccessibilityState(STATE_ENABLED) ok")
# Client handlers
client_handlers = [LoadHandler(self, g_datauri),
DisplayHandler(self),
RenderHandler(self)]
for handler in client_handlers:
browser.SetClientHandler(handler)
# Initiate OSR rendering
browser.SendFocusEvent(True)
browser.WasResized()
# Test selection
on_load_end(select_h1_text, browser)
# Message loop
run_message_loop()
# Close browser and clean reference
browser.CloseBrowser(True)
del browser
subtest_message("browser.CloseBrowser() ok")
# Give it some time to close before checking asserts
# and calling shutdown.
do_message_loop_work(25)
# Asserts before shutdown
# noinspection PyTypeChecker
check_auto_asserts(self, [] + client_handlers
+ [global_handler,
accessibility_handler])
# Test shutdown of CEF
cef.Shutdown()
subtest_message("cef.Shutdown() ok")
# Display summary
show_test_summary(__file__)
sys.stdout.flush()
class AccessibilityHandler(object):
def __init__(self, test_case):
self.test_case = test_case
# Asserts for True/False will be checked just before shutdown.
# Test whether asserts are working correctly.
self.test_for_True = True
self.javascript_errors_False = False
self._OnAccessibilityTreeChange_True = False
self._OnAccessibilityLocationChange_True = False
self.loadComplete_True = False
self.layoutComplete_True = False
def _OnAccessibilityTreeChange(self, value):
self._OnAccessibilityTreeChange_True = True
for event in value:
if "event_type" in event:
if event["event_type"] == "loadComplete":
# LoadHandler.OnLoadEnd is called after this event
self.test_case.assertFalse(self.loadComplete_True)
self.loadComplete_True = True
elif event["event_type"] == "layoutComplete":
# layoutComplete event occurs twice, one when a blank
# page is loaded and second time when loading datauri.
if self.loadComplete_True:
self.test_case.assertFalse(self.layoutComplete_True)
self.layoutComplete_True = True
def _OnAccessibilityLocationChange(self, **_):
self._OnAccessibilityLocationChange_True = True
def select_h1_text(browser):
browser.SendMouseClickEvent(0, 0, cef.MOUSEBUTTON_LEFT,
mouseUp=False, clickCount=1)
browser.SendMouseMoveEvent(400, 20, mouseLeave=False,
modifiers=cef.EVENTFLAG_LEFT_MOUSE_BUTTON)
browser.SendMouseClickEvent(400, 20, cef.MOUSEBUTTON_LEFT,
mouseUp=True, clickCount=1)
browser.Invalidate(cef.PET_VIEW)
subtest_message("select_h1_text() ok")
class RenderHandler(object):
def __init__(self, test_case):
self.test_case = test_case
# Asserts for True/False will be checked just before shutdown.
# Test whether asserts are working correctly.
self.test_for_True = True
self.GetViewRect_True = False
self.OnPaint_True = False
self.OnTextSelectionChanged_True = False
def GetViewRect(self, rect_out, **_):
"""Called to retrieve the view rectangle which is relative
to screen coordinates. Return True if the rectangle was
provided."""
# rect_out --> [x, y, width, height]
self.GetViewRect_True = True
rect_out.extend([0, 0, 800, 600])
return True
def OnPaint(self, element_type, paint_buffer, **_):
"""Called when an element should be painted."""
if element_type == cef.PET_VIEW:
self.test_case.assertEqual(paint_buffer.width, 800)
self.test_case.assertEqual(paint_buffer.height, 600)
if not self.OnPaint_True:
self.OnPaint_True = True
subtest_message("RenderHandler.OnPaint: viewport ok")
else:
raise Exception("Unsupported element_type in OnPaint")
def OnTextSelectionChanged(self, selected_text, selected_range, **_):
if not self.OnTextSelectionChanged_True:
self.OnTextSelectionChanged_True = True
# First call
self.test_case.assertEqual(selected_text, "")
self.test_case.assertEqual(selected_range, [0, 0])
else:
# Second call.
# <h1> tag should be selected.
self.test_case.assertEqual(selected_text,
"Off-screen rendering test")
if __name__ == "__main__":
_test_runner.main(os.path.basename(__file__))
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