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"""
Usage documentation at: <https://py-pdf.github.io/fpdf2/Presentations.html#transitions>
"""
from abc import ABC
from typing import TYPE_CHECKING, Optional
if TYPE_CHECKING:
from .encryption import StandardSecurityHandler
class Transition(ABC):
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
raise NotImplementedError
class SplitTransition(Transition):
def __init__(self, dimension: str, direction: str) -> None:
if dimension not in ("H", "V"):
raise ValueError(
f"Unsupported dimension '{dimension}', must be H(horizontal) or V(ertical)"
)
self.dimension = dimension
if direction not in ("I", "O"):
raise ValueError(
f"Unsupported direction '{direction}', must be I(nward) or O(utward)"
)
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Split /DM /{self.dimension} /M /{self.direction}>>"
class BlindsTransition(Transition):
def __init__(self, dimension: str) -> None:
if dimension not in ("H", "V"):
raise ValueError(
f"Unsupported dimension '{dimension}', must be H(horizontal) or V(ertical)"
)
self.dimension = dimension
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Blinds /DM /{self.dimension}>>"
class BoxTransition(Transition):
def __init__(self, direction: str) -> None:
if direction not in ("I", "O"):
raise ValueError(
f"Unsupported direction '{direction}', must be I(nward) or O(utward)"
)
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Blinds /M /{self.direction}>>"
class WipeTransition(Transition):
def __init__(self, direction: int) -> None:
if direction not in (0, 90, 180, 270):
raise ValueError(
f"Unsupported direction '{direction}', must 0, 90, 180 or 270"
)
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Wipe /Di /{self.direction}>>"
class DissolveTransition(Transition):
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return "<</Type /Trans /S /Dissolve>>"
class GlitterTransition(Transition):
def __init__(self, direction: int) -> None:
if direction not in (0, 270, 315):
raise ValueError(f"Unsupported direction '{direction}', must 0, 270 or 315")
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Glitter /Di /{self.direction}>>"
class FlyTransition(Transition):
def __init__(self, dimension: str, direction: Optional[int] = None) -> None:
if dimension not in ("H", "V"):
raise ValueError(
f"Unsupported dimension '{dimension}', must be H(horizontal) or V(ertical)"
)
self.dimension = dimension
if direction not in (0, 270, None):
raise ValueError(
f"Unsupported direction '{direction}', must 0, 270 or None"
)
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return (
f"<</Type /Trans /S /Glitter /M /{self.dimension} /Di /{self.direction}>>"
)
class PushTransition(Transition):
def __init__(self, direction: int) -> None:
if direction not in (0, 270):
raise ValueError(f"Unsupported direction '{direction}', must 0 or 270")
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Push /Di /{self.direction}>>"
class CoverTransition(Transition):
def __init__(self, direction: int) -> None:
if direction not in (0, 270):
raise ValueError(f"Unsupported direction '{direction}', must 0 or 270")
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Cover /Di /{self.direction}>>"
class UncoverTransition(Transition):
def __init__(self, direction: int) -> None:
if direction not in (0, 270):
raise ValueError(f"Unsupported direction '{direction}', must 0 or 270")
self.direction = direction
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return f"<</Type /Trans /S /Uncover /Di /{self.direction}>>"
class FadeTransition(Transition):
def serialize(
self,
_security_handler: Optional["StandardSecurityHandler"] = None,
_obj_id: Optional[int] = None,
) -> str:
return "<</Type /Fade /S /Dissolve>>"
|
