def ask_user(self):
# Ask the user for a factor by which to multiply all font sizes
factor, ok = QInputDialog.getDouble(
self.gui,
'Enter a magnification factor',
'Allow font sizes in the book will be multiplied by the specified factor',
value=2,
min=0.1,
max=4)
if ok:
# Ensure any in progress editing the user is doing is present in the container
self.boss.commit_all_editors_to_container()
try:
self.magnify_fonts(factor)
except Exception:
# Something bad happened report the error to the user
import traceback
error_dialog(
self.gui,
_('Failed to magnify fonts'),
_('Failed to magnify fonts, click "Show details" for more info'
),
det_msg=traceback.format_exc(),
show=True)
# Revert to the saved restore point
self.boss.revert_requested(
self.boss.global_undo.previous_container)
else:
# Show the user what changes we have made, allowing her to
# revert them if necessary
self.boss.show_current_diff()
# Update the editor UI to take into account all the changes we
# have made
self.boss.apply_container_update_to_gui()
def oilify_image(self):
val, ok = QInputDialog.getDouble(
self,
_('Oilify image'),
_('The strength of the operation (higher numbers have larger effects)'
),
value=4,
min=0.1,
max=20)
if ok:
self.canvas.oilify_image(radius=val)
