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93 lines
2.3 KiB
Python
93 lines
2.3 KiB
Python
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# Copyright (c) 2010-2024 openpyxl
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import math
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from openpyxl.utils.units import pixels_to_EMU
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class Drawing:
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""" a drawing object - eg container for shapes or charts
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we assume user specifies dimensions in pixels; units are
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converted to EMU in the drawing part
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"""
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count = 0
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def __init__(self):
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self.name = ''
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self.description = ''
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self.coordinates = ((1, 2), (16, 8))
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self.left = 0
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self.top = 0
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self._width = 21 # default in px
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self._height = 192 #default in px
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self.resize_proportional = False
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self.rotation = 0
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self.anchortype = "absolute"
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self.anchorcol = 0 # left cell
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self.anchorrow = 0 # top row
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@property
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def width(self):
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return self._width
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@width.setter
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def width(self, w):
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if self.resize_proportional and w:
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ratio = self._height / self._width
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self._height = round(ratio * w)
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self._width = w
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@property
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def height(self):
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return self._height
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@height.setter
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def height(self, h):
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if self.resize_proportional and h:
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ratio = self._width / self._height
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self._width = round(ratio * h)
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self._height = h
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def set_dimension(self, w=0, h=0):
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xratio = w / self._width
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yratio = h / self._height
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if self.resize_proportional and w and h:
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if (xratio * self._height) < h:
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self._height = math.ceil(xratio * self._height)
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self._width = w
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else:
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self._width = math.ceil(yratio * self._width)
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self._height = h
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@property
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def anchor(self):
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from .spreadsheet_drawing import (
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OneCellAnchor,
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TwoCellAnchor,
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AbsoluteAnchor)
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if self.anchortype == "absolute":
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anchor = AbsoluteAnchor()
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anchor.pos.x = pixels_to_EMU(self.left)
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anchor.pos.y = pixels_to_EMU(self.top)
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elif self.anchortype == "oneCell":
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anchor = OneCellAnchor()
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anchor._from.col = self.anchorcol
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anchor._from.row = self.anchorrow
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anchor.ext.width = pixels_to_EMU(self._width)
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anchor.ext.height = pixels_to_EMU(self._height)
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return anchor
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