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Fix preview flicker 

fixes #553
This line is not needed as the display will move
to the first slide by default.
This commit is contained in:
Daniel 2020-05-25 05:01:12 +00:00 committed by Raoul Snyman
parent 51a57ae5f2
commit b4648ee618
10 changed files with 169 additions and 46 deletions
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2
.gitignore vendored
View File

@ -48,4 +48,4 @@ package-lock.json
tags
test
openlp-test-projectordb.sqlite
Chromium_80.0.3987_(Linux_0.0.0)/
*/test-results.xml

23
openlp/core/display/html/display.js
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@ -985,6 +985,29 @@ var Display = {
Display._theme = theme;
}
},
/**
* Set background image, replaced when theme is updated/applied
* @param bg_color Colour behind the image
* @param image_path Image path
*/
setBackgroundImage: function (bg_color, image_path) {
var targetElement = $(".slides > section")[0];
targetElement.setAttribute("data-background", "url('" + image_path + "')");
targetElement.setAttribute("data-background-size", "cover");
Reveal.sync();
},
/**
* Reset/reapply the theme
*/
resetTheme: function () {
var targetElement = $(".slides > section")[0];
if (!targetElement) {
console.warn("Couldn't reset theme: No slides exist");
return;
}
Display.applyTheme(targetElement, targetElement.classList.contains("text-slides"));
Reveal.sync();
},
/**
* Apply the theme to the provided element
* @param targetElement The target element to apply the theme (expected to be a <section> in the slides container)

13
openlp/core/display/window.py
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@ -202,6 +202,11 @@ class DisplayWindow(QtWidgets.QWidget, RegistryProperties, LogMixin):
self.setGeometry(screen.display_geometry)
self.screen_number = screen.number
def set_background_image(self, bg_color, image_path):
image_uri = image_path.as_uri()
self.run_javascript('Display.setBackgroundImage("{bg_color}", "{image}");'.format(bg_color=bg_color,
image=image_uri))
def set_single_image(self, bg_color, image_path):
"""
:param str bg_color: Background color
@ -415,6 +420,14 @@ class DisplayWindow(QtWidgets.QWidget, RegistryProperties, LogMixin):
exported_theme = theme_copy.export_theme(is_js=True)
self.run_javascript('Display.setTheme({theme});'.format(theme=exported_theme), is_sync=is_sync)
def reload_theme(self):
"""
Applies the set theme
DO NOT use this when changing slides. Only use this if you need to force an update
to the current visible slides.
"""
self.run_javascript('Display.resetTheme();')
def get_video_types(self):
"""
Get the types of videos playable by the embedded media player

21
openlp/core/ui/slidecontroller.py
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@ -868,6 +868,26 @@ class SlideController(QtWidgets.QWidget, LogMixin, RegistryProperties):
self.delay_spin_box.setValue(int(item.timed_slide_interval))
self.on_play_slides_once()
def set_background_image(self, bg_color, image_path):
"""
Reload the theme on displays.
"""
# Set theme for preview
self.preview_display.set_background_image(bg_color, image_path)
# Set theme for displays
for display in self.displays:
display.set_background_image(bg_color, image_path)
def reload_theme(self):
"""
Reload the theme on displays.
"""
# Set theme for preview
self.preview_display.reload_theme()
# Set theme for displays
for display in self.displays:
display.reload_theme()
def _set_theme(self, service_item):
"""
Set up the theme from the service item.
@ -893,7 +913,6 @@ class SlideController(QtWidgets.QWidget, LogMixin, RegistryProperties):
old_item = self.service_item
# rest to allow the remote pick up verse 1 if large imaged
self.selected_row = 0
self.preview_display.go_to_slide(0)
# take a copy not a link to the servicemanager copy.
self.service_item = copy.copy(service_item)
if self.service_item.is_command():

3
openlp/core/ui/themeform.py
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@ -433,5 +433,6 @@ class ThemeForm(QtWidgets.QWizard, Ui_ThemeWizard, RegistryProperties):
return
# Set the theme background to the cache location
self.theme.background_filename = destination_path
self.theme_manager.save_theme(self.theme, self.preview_box.save_screenshot())
self.theme_manager.save_theme(self.theme)
self.theme_manager.save_preview(self.theme.theme_name, self.preview_box.save_screenshot())
return QtWidgets.QDialog.accept(self)

39
openlp/core/ui/thememanager.py
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@ -353,6 +353,7 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
theme_data.theme_name = new_theme_name
theme_data.extend_image_filename(self.theme_path)
self.save_theme(theme_data, background_override=old_background)
self.update_preview_images([new_theme_name])
self.load_themes()
def on_edit_theme(self, field=None):
@ -479,10 +480,9 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
self.application.set_busy_cursor()
new_themes = []
for file_path in file_paths:
new_themes.append(self.unzip_theme(file_path, self.theme_path))
new_themes.append(self.unzip_theme(file_path))
self.settings.setValue('themes/last directory import', file_path.parent)
self.update_preview_images(new_themes)
self.load_themes()
self.application.set_normal_cursor()
def load_first_time_themes(self):
@ -494,7 +494,7 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
new_themes = []
for theme_path in theme_paths:
theme_path = self.theme_path / theme_path
new_themes.append(self.unzip_theme(theme_path, self.theme_path))
new_themes.append(self.unzip_theme(theme_path))
delete_file(theme_path)
# No themes have been found so create one
if not theme_paths:
@ -582,12 +582,11 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
defaultButton=QtWidgets.QMessageBox.No)
return ret == QtWidgets.QMessageBox.Yes
def unzip_theme(self, file_path, directory_path):
def unzip_theme(self, file_path):
"""
Unzip the theme, remove the preview file if stored. Generate a new preview file. Check the XML theme version
and upgrade if necessary.
:param Path file_path:
:param Path directory_path:
"""
self.log_debug('Unzipping theme {name}'.format(name=file_path))
file_xml = None
@ -614,7 +613,7 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
new_theme.load_theme(theme_zip.read(json_file[0]).decode("utf-8"))
theme_name = new_theme.theme_name
json_theme = True
theme_folder = directory_path / theme_name
theme_folder = self.theme_path / theme_name
if theme_folder.exists() and not self.over_write_message_box(theme_name):
abort_import = True
return
@ -626,7 +625,7 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
if split_name[-1] == '' or len(split_name) == 1:
# is directory or preview file
continue
full_name = directory_path / zipped_file_rel_path
full_name = self.theme_path / zipped_file_rel_path
create_paths(full_name.parent)
if zipped_file_rel_path.suffix.lower() == '.xml' or zipped_file_rel_path.suffix.lower() == '.json':
file_xml = str(theme_zip.read(zipped_file), 'utf-8')
@ -643,12 +642,15 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
'inaccessible or not a valid theme.').format(file_name=file_path))
finally:
if not abort_import:
# As all files are closed, we can create the Theme.
if file_xml:
if json_theme:
self._create_theme_from_json(file_xml, self.theme_path)
else:
self._create_theme_from_xml(file_xml, self.theme_path)
# TODO: remove XML handling after once the upgrade path from 2.4 is no longer required
# As all files are closed, upgrade theme (xml to json) if needed.
if file_xml and not json_theme:
theme_path = self.theme_path / theme_name
xml_file_paths = theme_path.glob('*.xml')
for xml_file_path in xml_file_paths:
xml_file_path.unlink()
theme = self._create_theme_from_xml(file_xml, self.theme_path)
self.save_theme(theme)
return theme_name
else:
return None
@ -668,7 +670,7 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
return False
return True
def save_theme(self, theme, image=None, background_override=None):
def save_theme(self, theme, background_override=None):
"""
Writes the theme to the disk and including the background image and thumbnail if necessary
@ -700,15 +702,6 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
shutil.copyfile(background_file, theme.background_filename)
except OSError:
self.log_exception('Failed to save theme image')
if image:
sample_path_name = self.theme_path / '{file_name}.png'.format(file_name=name)
if sample_path_name.exists():
sample_path_name.unlink()
image.save(str(sample_path_name), 'png')
thumb_path = self.thumb_path / '{name}.png'.format(name=name)
create_thumb(sample_path_name, thumb_path, False)
else:
self.update_preview_images([name])
def save_preview(self, theme_name, preview_pixmap):
"""

17
openlp/plugins/images/lib/mediaitem.py
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@ -72,7 +72,8 @@ class ImageMediaItem(MediaManagerItem):
self.add_group_form = AddGroupForm(self)
self.fill_groups_combobox(self.choose_group_form.group_combobox)
self.fill_groups_combobox(self.add_group_form.parent_group_combobox)
Registry().register_function('live_theme_changed', self.live_theme_changed)
Registry().register_function('live_theme_changed', self.on_display_changed)
Registry().register_function('slidecontroller_live_started', self.on_display_changed)
# Allow DnD from the desktop.
self.list_view.activateDnD()
@ -663,9 +664,9 @@ class ImageMediaItem(MediaManagerItem):
"""
self.reset_action.setVisible(False)
self.reset_action_context.setVisible(False)
self.live_controller.display.reset_image()
self.live_controller.reload_theme()
def live_theme_changed(self):
def on_display_changed(self, service_item=None):
"""
Triggered by the change of theme in the slide controller.
"""
@ -686,13 +687,9 @@ class ImageMediaItem(MediaManagerItem):
return
file_path = bitem.data(0, QtCore.Qt.UserRole).file_path
if file_path.exists():
if self.live_controller.display.direct_image(str(file_path), background):
self.reset_action.setVisible(True)
self.reset_action_context.setVisible(True)
else:
critical_error_message_box(
UiStrings().LiveBGError,
translate('ImagePlugin.MediaItem', 'There was no display item to amend.'))
self.live_controller.set_background_image(background, file_path)
self.reset_action.setVisible(True)
self.reset_action_context.setVisible(True)
else:
critical_error_message_box(
UiStrings().LiveBGError,

16
tests/functional/openlp_core/ui/test_thememanager.py
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@ -309,19 +309,18 @@ def test_unzip_theme(registry):
with patch('openlp.core.ui.thememanager.critical_error_message_box') \
as mocked_critical_error_message_box:
theme_manager = ThemeManager(None)
theme_manager._create_theme_from_xml = MagicMock()
theme_manager.update_preview_images = MagicMock()
theme_manager.theme_path = None
folder_path = Path(mkdtemp())
theme_manager.theme_path = Path(mkdtemp())
theme_file_path = RESOURCE_PATH / 'themes' / 'Moss_on_tree.otz'
# WHEN: We try to unzip it
theme_manager.unzip_theme(theme_file_path, folder_path)
theme_manager.unzip_theme(theme_file_path)
# THEN: Files should be unpacked
assert (folder_path / 'Moss on tree' / 'Moss on tree.xml').exists() is True
# THEN: Files should be unpacked AND xml file should be upgraded to json
assert (theme_manager.theme_path / 'Moss on tree' / 'Moss on tree.xml').exists() is False
assert (theme_manager.theme_path / 'Moss on tree' / 'Moss on tree.json').exists() is True
assert mocked_critical_error_message_box.call_count == 0, 'No errors should have happened'
shutil.rmtree(folder_path)
shutil.rmtree(theme_manager.theme_path)
def test_unzip_theme_invalid_version(registry):
@ -337,9 +336,10 @@ def test_unzip_theme_invalid_version(registry):
mocked_zip_file.return_value = MagicMock(**{'namelist.return_value': [os.path.join('theme', 'theme.xml')]})
mocked_getroot.return_value = MagicMock(**{'get.return_value': None})
theme_manager = ThemeManager(None)
theme_manager.theme_path = Path('folder')
# WHEN: unzip_theme is called
theme_manager.unzip_theme(Path('theme.file'), Path('folder'))
theme_manager.unzip_theme(Path('theme.file'))
# THEN: The critical_error_message_box should have been called
assert mocked_critical_error_message_box.call_count == 1, 'Should have been called once'

46
tests/functional/openlp_plugins/images/test_mediaitem.py
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@ -181,10 +181,52 @@ def test_on_reset_click(media_item):
# WHEN: on_reset_click is called
media_item.on_reset_click()
# THEN: the reset_action should be set visible, and the image should be reset
# THEN: the reset_action should be set invisible, and the image should be reset
media_item.reset_action.setVisible.assert_called_with(False)
media_item.reset_action_context.setVisible.assert_called_with(False)
media_item.live_controller.display.reset_image.assert_called_with()
media_item.live_controller.reload_theme.assert_called_with()
def test_on_display_changed(media_item):
"""
Test that on_display_changed() hides the reset background button
"""
# GIVEN: A mocked version of reset_action
media_item.reset_action = MagicMock()
media_item.reset_action_context = MagicMock()
# WHEN: on_display_changed is called
media_item.on_display_changed()
# THEN: the reset_action should be set invisible
media_item.reset_action.setVisible.assert_called_with(False)
media_item.reset_action_context.setVisible.assert_called_with(False)
@patch('openlp.plugins.images.lib.mediaitem.check_item_selected')
@patch('openlp.plugins.images.lib.mediaitem.isinstance')
@patch('openlp.plugins.images.lib.mediaitem.QtGui.QColor')
@patch('openlp.plugins.images.lib.mediaitem.Path.exists')
def test_on_replace_click(mocked_exists, mocked_qcolor, mocked_isinstance, mocked_check_item_selected, media_item):
"""
Test that on_replace_click() actually sets the background
"""
# GIVEN: A mocked version of reset_action, and a (faked) existing selected image file
media_item.reset_action = MagicMock()
media_item.reset_action_context = MagicMock()
media_item.list_view = MagicMock()
mocked_check_item_selected.return_value = True
mocked_isinstance.return_value = True
mocked_exists.return_value = True
mocked_qcolor.return_value = 'BackgroundColor'
# WHEN: on_replace_click is called
media_item.on_replace_click()
# THEN: the reset_action should be set visible, and the image should be set
media_item.reset_action.setVisible.assert_called_with(True)
media_item.reset_action_context.setVisible.assert_called_with(True)
media_item.live_controller.set_background_image.assert_called_with('BackgroundColor', ANY)
@patch('openlp.plugins.images.lib.mediaitem.delete_file')

35
tests/js/test_display.js
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@ -769,6 +769,41 @@ describe("Display.setImageSlides", function () {
});
});
describe("Display.setBackgroundImage and Display.resetTheme", function () {
beforeEach(function() {
document.body.innerHTML = "";
var slides_container = _createDiv({"class": "slides"});
Display._slidesContainer = slides_container;
var section = document.createElement("section");
Display._slidesContainer.appendChild(section);
});
it("should set the background image data and call sync once for set slides and again for set background", function () {
spyOn(Reveal, "sync");
spyOn(Reveal, "slide");
Display.setBackgroundImage("#fff", "/file/path");
expect($(".slides > section")[0].getAttribute("data-background")).toEqual("url('/file/path')");
expect(Reveal.sync).toHaveBeenCalledTimes(1);
});
it("should restore the background image to the theme", function () {
Display._theme = {
'background_type': BackgroundType.Image,
'background_filename': '/another/path'
};
$(".slides > section")[0].setAttribute("data-background", "/file/path");
spyOn(Reveal, "sync");
spyOn(Reveal, "slide");
Display.resetTheme();
expect($(".slides > section")[0].getAttribute("data-background")).toEqual("url('/another/path')");
expect(Reveal.sync).toHaveBeenCalledTimes(1);
});
});
describe("Display.setVideo", function () {
beforeEach(function() {
document.body.innerHTML = "";