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Use a live webengine widget when previwing themes.

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This commit is contained in:
Tomas Groth 2019-05-28 22:37:50 +02:00
parent 6800490995
commit 7558fb6e64
4 changed files with 72 additions and 60 deletions
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53
openlp/core/display/render.py
View File

@ -425,7 +425,7 @@ def get_start_tags(raw_text):
return raw_text + ''.join(end_tags), ''.join(start_tags), ''.join(html_tags)
class Renderer(RegistryBase, LogMixin, RegistryProperties, DisplayWindow):
class ThemePreviewRenderer(LogMixin, DisplayWindow):
"""
A virtual display used for rendering thumbnails and other offscreen tasks
"""
@ -435,24 +435,6 @@ class Renderer(RegistryBase, LogMixin, RegistryProperties, DisplayWindow):
"""
super().__init__(*args, **kwargs)
self.force_page = False
for screen in ScreenList():
if screen.is_display:
self.setGeometry(screen.display_geometry.x(), screen.display_geometry.y(),
screen.display_geometry.width(), screen.display_geometry.height())
break
# If the display is not show'ed and hidden like this webegine will not render
self.show()
self.hide()
self.theme_height = 0
self.theme_level = ThemeLevel.Global
def set_theme_level(self, theme_level):
"""
Sets the theme level.
:param theme_level: The theme level to be used.
"""
self.theme_level = theme_level
def calculate_line_count(self):
"""
@ -466,7 +448,7 @@ class Renderer(RegistryBase, LogMixin, RegistryProperties, DisplayWindow):
"""
return self.run_javascript('Display.clearSlides();')
def generate_preview(self, theme_data, force_page=False):
def generate_preview(self, theme_data, force_page=False, generate_screenshot=True):
"""
Generate a preview of a theme.
@ -486,6 +468,7 @@ class Renderer(RegistryBase, LogMixin, RegistryProperties, DisplayWindow):
verses['verse'] = 'V1'
self.load_verses([verses])
self.force_page = False
if generate_screenshot:
return self.save_screenshot()
self.force_page = False
return None
@ -745,3 +728,33 @@ class Renderer(RegistryBase, LogMixin, RegistryProperties, DisplayWindow):
pixmap.save(fname, ext)
else:
return pixmap
class Renderer(RegistryBase, RegistryProperties, ThemePreviewRenderer):
"""
A virtual display used for rendering thumbnails and other offscreen tasks
"""
def __init__(self, *args, **kwargs):
"""
Constructor
"""
super().__init__(*args, **kwargs)
self.force_page = False
for screen in ScreenList():
if screen.is_display:
self.setGeometry(screen.display_geometry.x(), screen.display_geometry.y(),
screen.display_geometry.width(), screen.display_geometry.height())
break
# If the display is not show'ed and hidden like this webegine will not render
self.show()
self.hide()
self.theme_height = 0
self.theme_level = ThemeLevel.Global
def set_theme_level(self, theme_level):
"""
Sets the theme level.
:param theme_level: The theme level to be used.
"""
self.theme_level = theme_level

33
openlp/core/ui/themeform.py
View File

@ -174,16 +174,12 @@ class ThemeForm(QtWidgets.QWizard, Ui_ThemeWizard, RegistryProperties):
if not event:
event = QtGui.QResizeEvent(self.size(), self.size())
QtWidgets.QWizard.resizeEvent(self, event)
if hasattr(self, 'preview_page') and self.currentPage() == self.preview_page:
frame_width = self.preview_box_label.lineWidth()
pixmap_width = self.preview_area.width() - 2 * frame_width
pixmap_height = self.preview_area.height() - 2 * frame_width
aspect_ratio = float(pixmap_width) / pixmap_height
if aspect_ratio < self.display_aspect_ratio:
pixmap_height = int(pixmap_width / self.display_aspect_ratio + 0.5)
else:
pixmap_width = int(pixmap_height * self.display_aspect_ratio + 0.5)
self.preview_box_label.setFixedSize(pixmap_width + 2 * frame_width, pixmap_height + 2 * frame_width)
try:
self.display_aspect_ratio = self.renderer.width() / self.renderer.height()
except ZeroDivisionError:
self.display_aspect_ratio = 1
self.preview_area_layout.set_aspect_ratio(self.display_aspect_ratio)
self.preview_box.set_scale(float(self.preview_box.width()) / self.renderer.width())
def validateCurrentPage(self):
"""
@ -208,10 +204,16 @@ class ThemeForm(QtWidgets.QWizard, Ui_ThemeWizard, RegistryProperties):
self.setOption(QtWidgets.QWizard.HaveCustomButton1, enabled)
if self.page(page_id) == self.preview_page:
self.update_theme()
frame = self.theme_manager.generate_image(self.theme)
frame.setDevicePixelRatio(self.devicePixelRatio())
self.preview_box_label.setPixmap(frame)
self.display_aspect_ratio = float(frame.width()) / frame.height()
self.preview_box.set_theme(self.theme)
self.preview_box.clear_slides()
self.preview_box.set_scale(float(self.preview_box.width()) / self.renderer.width())
try:
self.display_aspect_ratio = self.renderer.width() / self.renderer.height()
except ZeroDivisionError:
self.display_aspect_ratio = 1
self.preview_area_layout.set_aspect_ratio(self.display_aspect_ratio)
self.preview_box.generate_preview(self.theme, False, False)
self.preview_box.show()
self.resizeEvent()
def on_custom_1_button_clicked(self, number):
@ -400,6 +402,7 @@ class ThemeForm(QtWidgets.QWizard, Ui_ThemeWizard, RegistryProperties):
Handle the display and state of the Preview page.
"""
self.setField('name', self.theme.theme_name)
self.preview_box.set_theme(self.theme)
def on_background_combo_box_current_index_changed(self, index):
"""
@ -560,5 +563,5 @@ class ThemeForm(QtWidgets.QWizard, Ui_ThemeWizard, RegistryProperties):
source_path = self.theme.background_filename
if not self.edit_mode and not self.theme_manager.check_if_theme_exists(self.theme.theme_name):
return
self.theme_manager.save_theme(self.theme, source_path, destination_path)
self.theme_manager.save_theme(self.theme, source_path, destination_path, self.preview_box.save_screenshot())
return QtWidgets.QDialog.accept(self)

22
openlp/core/ui/thememanager.py
View File

@ -639,24 +639,14 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
return False
return True
def save_theme(self, theme, image_source_path, image_destination_path):
"""
Called by theme maintenance Dialog to save the theme and to trigger the reload of the theme list
:param Theme theme: The theme data object.
:param Path image_source_path: Where the theme image is currently located.
:param Path image_destination_path: Where the Theme Image is to be saved to
:rtype: None
"""
self._write_theme(theme, image_source_path, image_destination_path)
def _write_theme(self, theme, image_source_path=None, image_destination_path=None):
def save_theme(self, theme, image_source_path, image_destination_path, image=None):
"""
Writes the theme to the disk and handles the background image if necessary
:param Theme theme: The theme data object.
:param Path image_source_path: Where the theme image is currently located.
:param Path image_destination_path: Where the Theme Image is to be saved to
:param image: The example image of the theme. Optionally.
:rtype: None
"""
name = theme.theme_name
@ -676,6 +666,14 @@ class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, R
shutil.copyfile(image_source_path, image_destination_path)
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.generate_and_save_image(name, theme)
def generate_and_save_image(self, theme_name, theme):

20
openlp/core/ui/themewizard.py
View File

@ -31,7 +31,8 @@ from openlp.core.lib.ui import add_welcome_page, create_valign_selection_widgets
from openlp.core.ui.icons import UiIcons
from openlp.core.widgets.buttons import ColorButton
from openlp.core.widgets.edits import PathEdit
from openlp.core.widgets.layouts import AspectRatioLayout
from openlp.core.display.render import ThemePreviewRenderer
class Ui_ThemeWizard(object):
"""
@ -363,16 +364,13 @@ class Ui_ThemeWizard(object):
self.preview_layout.addLayout(self.theme_name_layout)
self.preview_area = QtWidgets.QWidget(self.preview_page)
self.preview_area.setObjectName('PreviewArea')
self.preview_area_layout = QtWidgets.QGridLayout(self.preview_area)
self.preview_area_layout.setContentsMargins(0, 0, 0, 0)
self.preview_area_layout.setColumnStretch(0, 1)
self.preview_area_layout.setRowStretch(0, 1)
self.preview_area_layout.setObjectName('preview_area_layout')
self.preview_box_label = QtWidgets.QLabel(self.preview_area)
self.preview_box_label.setFrameShape(QtWidgets.QFrame.Box)
self.preview_box_label.setScaledContents(True)
self.preview_box_label.setObjectName('preview_box_label')
self.preview_area_layout.addWidget(self.preview_box_label)
self.preview_area_layout = AspectRatioLayout(self.preview_area, 0.75) # Dummy ratio, will be update
self.preview_area_layout.margin = 8
self.preview_area_layout.setSpacing(0)
self.preview_area_layout.setObjectName('preview_web_layout')
self.preview_box = ThemePreviewRenderer(self)
self.preview_box.setObjectName('preview_box')
self.preview_area_layout.addWidget(self.preview_box)
self.preview_layout.addWidget(self.preview_area)
theme_wizard.addPage(self.preview_page)
self.retranslate_ui(theme_wizard)