/usr/lib/python3/dist-packages/reportlab/platypus/frames.py is in python3-reportlab 3.3.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 | #Copyright ReportLab Europe Ltd. 2000-2016
#see license.txt for license details
#history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/platypus/frames.py
__version__='3.3.0'
__doc__="""A frame is a container for content on a page.
"""
import logging
logger = logging.getLogger('reportlab.platypus')
_geomAttr=('x1', 'y1', 'width', 'height', 'leftPadding', 'bottomPadding', 'rightPadding', 'topPadding')
from reportlab import rl_config, isPy3
_FUZZ=rl_config._FUZZ
class ShowBoundaryValue:
def __init__(self,color=(0,0,0),width=0.1):
self.color = color
self.width = width
if isPy3:
def __bool__(self):
return self.color is not None and self.width>=0
else:
def __nonzero__(self):
return self.color is not None and self.width>=0
class Frame:
'''
A Frame is a piece of space in a document that is filled by the
"flowables" in the story. For example in a book like document most
pages have the text paragraphs in one or two frames. For generality
a page might have several frames (for example for 3 column text or
for text that wraps around a graphic).
After creation a Frame is not usually manipulated directly by the
applications program -- it is used internally by the platypus modules.
Here is a diagramatid abstraction for the definitional part of a Frame::
width x2,y2
+---------------------------------+
| l top padding r | h
| e +-------------------------+ i | e
| f | | g | i
| t | | h | g
| | | t | h
| p | | | t
| a | | p |
| d | | a |
| | | d |
| +-------------------------+ |
| bottom padding |
+---------------------------------+
(x1,y1) <-- lower left corner
NOTE!! Frames are stateful objects. No single frame should be used in
two documents at the same time (especially in the presence of multithreading.
'''
def __init__(self, x1, y1, width,height, leftPadding=6, bottomPadding=6,
rightPadding=6, topPadding=6, id=None, showBoundary=0,
overlapAttachedSpace=None,_debug=None):
self.id = id
self._debug = _debug
#these say where it goes on the page
self.__dict__['_x1'] = x1
self.__dict__['_y1'] = y1
self.__dict__['_width'] = width
self.__dict__['_height'] = height
#these create some padding.
self.__dict__['_leftPadding'] = leftPadding
self.__dict__['_bottomPadding'] = bottomPadding
self.__dict__['_rightPadding'] = rightPadding
self.__dict__['_topPadding'] = topPadding
# if we want a boundary to be shown
self.showBoundary = showBoundary
if overlapAttachedSpace is None: overlapAttachedSpace = rl_config.overlapAttachedSpace
self._oASpace = overlapAttachedSpace
self._geom()
self._reset()
def __getattr__(self,a):
if a in _geomAttr: return self.__dict__['_'+a]
raise AttributeError(a)
def __setattr__(self,a,v):
if a in _geomAttr:
self.__dict__['_'+a] = v
self._geom()
else:
self.__dict__[a] = v
def _saveGeom(self, **kwds):
if not self.__dict__.setdefault('_savedGeom',{}):
for ga in _geomAttr:
ga = '_'+ga
self.__dict__['_savedGeom'][ga] = self.__dict__[ga]
for k,v in kwds.items():
setattr(self,k,v)
def _restoreGeom(self):
if self.__dict__.get('_savedGeom',None):
for ga in _geomAttr:
ga = '_'+ga
self.__dict__[ga] = self.__dict__[ga]['_savedGeom']
del self.__dict__['_savedGeom']
self._geom()
def _geom(self):
self._x2 = self._x1 + self._width
self._y2 = self._y1 + self._height
#efficiency
self._y1p = self._y1 + self._bottomPadding
#work out the available space
self._aW = self._x2 - self._x1 - self._leftPadding - self._rightPadding
self._aH = self._y2 - self._y1p - self._topPadding
def _reset(self):
self._restoreGeom()
#drawing starts at top left
self._x = self._x1 + self._leftPadding
self._y = self._y2 - self._topPadding
self._atTop = 1
self._prevASpace = 0
# these two should NOT be set on a frame.
# they are used when Indenter flowables want
# to adjust edges e.g. to do nested lists
self._leftExtraIndent = 0.0
self._rightExtraIndent = 0.0
def _getAvailableWidth(self):
return self._aW - self._leftExtraIndent - self._rightExtraIndent
def _add(self, flowable, canv, trySplit=0):
""" Draws the flowable at the current position.
Returns 1 if successful, 0 if it would not fit.
Raises a LayoutError if the object is too wide,
or if it is too high for a totally empty frame,
to avoid infinite loops"""
flowable._frame = self
flowable.canv = canv #so they can use stringWidth etc
try:
if getattr(flowable,'frameAction',None):
flowable.frameAction(self)
return 1
y = self._y
p = self._y1p
s = 0
aW = self._getAvailableWidth()
zeroSize = getattr(flowable,'_ZEROSIZE',False)
if not self._atTop:
s =flowable.getSpaceBefore()
if self._oASpace:
if getattr(flowable,'_SPACETRANSFER',False) or zeroSize:
s = self._prevASpace
s = max(s-self._prevASpace,0)
h = y - p - s
if h>0 or zeroSize:
w, h = flowable.wrap(aW, h)
else:
return 0
h += s
y -= h
if y < p-_FUZZ:
if not rl_config.allowTableBoundsErrors and ((h>self._aH or w>aW) and not trySplit):
from reportlab.platypus.doctemplate import LayoutError
raise LayoutError("Flowable %s (%sx%s points) too large for frame (%sx%s points)." % (
flowable.__class__, w,h, aW,self._aH))
return 0
else:
#now we can draw it, and update the current point.
s = flowable.getSpaceAfter()
fbg = getattr(self,'_frameBGs',None)
if fbg:
fbgl, fbgr, fbgc = fbg[-1]
fbw = self._width-fbgl-fbgr
fbh = y + h + s
fby = max(p,y-s)
fbh = max(0,fbh-fby)
if abs(fbw)>_FUZZ and abs(fbh)>_FUZZ:
canv.saveState()
canv.setFillColor(fbgc)
canv.rect(self._x1+fbgl,fby,fbw,fbh,stroke=0,fill=1)
canv.restoreState()
flowable.drawOn(canv, self._x + self._leftExtraIndent, y, _sW=aW-w)
flowable.canv=canv
if self._debug: logger.debug('drew %s' % flowable.identity())
y -= s
if self._oASpace:
if getattr(flowable,'_SPACETRANSFER',False):
s = self._prevASpace
self._prevASpace = s
if y!=self._y: self._atTop = 0
self._y = y
return 1
finally:
#sometimes canv/_frame aren't still on the flowable
for a in ('canv', '_frame'):
if hasattr(flowable,a):
delattr(flowable,a)
add = _add
def split(self,flowable,canv):
'''Ask the flowable to split using up the available space.'''
y = self._y
p = self._y1p
s = 0
if not self._atTop:
s = flowable.getSpaceBefore()
if self._oASpace:
s = max(s-self._prevASpace,0)
flowable._frame = self #some flowables might need these
flowable.canv = canv
try:
r = flowable.split(self._aW, y-p-s)
finally:
#sometimes canv/_frame aren't still on the flowable
for a in ('canv', '_frame'):
if hasattr(flowable,a):
delattr(flowable,a)
return r
def drawBoundary(self,canv):
"draw the frame boundary as a rectangle (primarily for debugging)."
from reportlab.lib.colors import Color, toColor
sb = self.showBoundary
ss = isinstance(sb,(str,tuple,list)) or isinstance(sb,Color)
w = -1
if ss:
c = toColor(sb,self)
ss = c is not self
elif isinstance(sb,ShowBoundaryValue) and sb:
c = toColor(sb.color,self)
w = sb.width
ss = c is not self
if ss:
canv.saveState()
canv.setStrokeColor(c)
if w>=0:
canv.setLineWidth(w)
canv.rect(
self._x1,
self._y1,
self._x2 - self._x1,
self._y2 - self._y1
)
if ss: canv.restoreState()
def addFromList(self, drawlist, canv):
"""Consumes objects from the front of the list until the
frame is full. If it cannot fit one object, raises
an exception."""
if self._debug: logger.debug("enter Frame.addFromlist() for frame %s" % self.id)
if self.showBoundary:
self.drawBoundary(canv)
while len(drawlist) > 0:
head = drawlist[0]
if self.add(head,canv,trySplit=0):
del drawlist[0]
else:
#leave it in the list for later
break
def add_generated_content(self,*C):
self.__dict__.setdefault('_generated_content',[]).extend(C)
def _aSpaceString(self):
return '(%s x %s%s)' % (self._getAvailableWidth(),self._aH,self._atTop and '*' or '')
|