def invoke(self,
canvas: "Canvas",
operands: List[AnyPDFType] = []): # type: ignore [name-defined]
assert isinstance(operands[0], Decimal)
assert isinstance(operands[1], Decimal)
SetTextLeading().invoke(canvas, [-operands[1]])
MoveTextPosition().invoke(canvas, operands)
def __init__(self):
super(Canvas, self).__init__()
# initialize operators
self.canvas_operators = [
# color
SetCMYKNonStroking(),
SetCMYKStroking(),
SetColorNonStroking(self),
SetColorStroking(self),
SetGrayNonStroking(),
SetGrayStroking(),
SetRGBNonStroking(),
SetRGBStroking(),
# compatibility
BeginCompatibilitySection(),
EndCompatibilitySection(),
# marked content
BeginMarkedContent(),
BeginMarkedContentWithPropertyList(),
EndMarkedContent(),
# state
ModifyTransformationMatrix(),
PopGraphicsState(),
PushGraphicsState(),
SetLineWidth(),
# text
BeginTextObject(),
EndTextObject(),
MoveTextPosition(),
MoveTextPositionSetLeading(),
MoveToNextLineShowText(),
MoveToNextLine(),
SetCharacterSpacing(),
SetFontAndSize(),
SetHorizontalScaling(),
SetSpacingMoveToNextLineShowText(),
SetTextLeading(),
SetTextMatrix(),
SetTextRenderingMode(),
SetTextRise(),
SetWordSpacing(),
ShowText(),
ShowTextWithGlyphPositioning(),
# xobject
Do(),
]
# compatibility mode
self.in_compatibility_section = False
# set initial graphics state
self.graphics_state = CanvasGraphicsState()
# canvas tag hierarchy is (oddly enough) not considered to be part of the graphics state
self.marked_content_stack = []
# set graphics state stack
self.graphics_state_stack = []
def invoke(self, canvas: "Canvas", operands: List[AnyPDFType] = []):
if not isinstance(operands[0], Decimal):
raise PDFTypeError(expected_type=Decimal,
received_type=operands[0].__class__)
if not isinstance(operands[1], Decimal):
raise PDFTypeError(expected_type=Decimal,
received_type=operands[1].__class__)
tx = operands[0]
ty = operands[1]
SetTextLeading().invoke(canvas, [-ty])
MoveTextPosition().invoke(canvas, operands)
def invoke(self, canvas: "Canvas", operands: List[AnyPDFType] = []): # type: ignore [name-defined]
operands = [Decimal(0), -canvas.graphics_state.leading]
MoveTextPosition().invoke(canvas, operands)