B 3RcX@sdZdZdZedeZddlTdZedZGdd d ZGd d d Zd Z d Z dZ dZ dZ dZdZdZdZdZdZdZdZdZdZd Zd ZGdddZd#ddZGd d!d!Zd"S)$a1 PIDDLE (Plug-In Drawing, Does Little Else) 2D Plug-In Drawing System Magnus Lie Hetland Andy Robinson Joseph J. Strout and others February-March 1999 On coordinates: units are Big Points, approximately 1/72 inch. The origin is at the top-left, and coordinates increase down (y) and to the right (x). z1.00.)*HgRQ@c@s eZdZdZddZddZdS) StateSaveralThis is a little utility class for saving and restoring the default drawing parameters of a canvas. 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Though some backends may allow further drawing after this call, presume that this is not possible for maximum portability file may be either a string or a file object with a write method if left as the default, the canvas's current name will be used format may be used to specify the type of file format to use as well as any corresponding extension to use for the filename This is an optional argument and backends may ignore it if they only produce one file format.Nr )r fileformatr r rsavesz Canvas.savecCsdS)zFor interactive Canvases, displays the given string in the 'info line' somewhere where the user can probably see it.Nr )r sr r r setInfoLineszCanvas.setInfoLinecCs|||||fS)N) stringWidth fontHeight)r rGfontr r r stringBox szCanvas.stringBoxcCs tddS)zxReturn the logical width of the string if it were drawn in the current font (defaults to self.font).rIN)NotImplementedError)r rGrKr r rrI#szCanvas.stringWidthcCs|s |j}d|jS)zMFind the height of one line of text (baseline to baseline) of the given font.g333333?)r r)r rKr r rrJ)szCanvas.fontHeightcCs tddS)z6Find the ascent (height above base) of the given font. fontAscentN)rM)r rKr r rrN1szCanvas.fontAscentcCs tddS)z7Find the descent (extent below base) of the given font. fontDescentN)rM)r rKr r rrO5szCanvas.fontDescentrhcCst||d}t||d}t|||} t|||} tt|||ddd} | dkrdd} ddlm} m} m}g}t|| }|}xZtt | dD]F}| || |d || || |d |f}| |||}qW|S) z4Return a list of points approximating the given arc.g@g$@ r)sincospirgf@) absminmaxmathrTrUrVfloatrangeintappend)r x1y1x2y2startAngextentZxScaleZyScaler8r9ZstepsrTrUrV pointliststepangleiZpointr r r arcPoints;s  0  zCanvas.arcPointsc % Csttt||||t||||t||||t||||d} d| } | | } | | } |} |}d}}}}|d|d||}|d|d||}d|d|d|}d|d|d|}d|d|}d|d|}|| }|| }|| }|| }|||| }|||| }d|}d|} |d|}!| d|}"| |fg}#x`t| D]T}$| ||} |||}|||!}|||"}||}|| }|#| |fqlW|#S)z=Return a list of points approximating the given Bezier curve.rRg?rr(r')rXrYr\r^)%r r_r`rarbx3y3x4y4Z bezierStepsZdt1Zdt2Zdt3ZxxZyyZuxZuyZvxZvyZaxZayZbxZbyZcxZcyZmx1Zmy1Zlx1Zly1ZkxZkyZmxZmyZlxZly pointListrhr r r curvePointsUsF8       zCanvas.curvePointsc Ksddl}||} | |||jd} | |||jd} |dd}|dd}|dd}|d} x0| D](} || ||||||| }|| }qvWdS)zLBreaks string into lines (on , , , or ), and calls drawString on each.rNgf@z  z  )rZrJrUrVrTreplacesplit drawString)r rGr8r9rKcolorrgkwargsrZhdydxlinesliner r rdrawMultiLineStrings      zCanvas.drawMultiLineStringc Ks tddS)z-Draw a straight line between x1,y1 and x2,y2.drawLineN)rM) r r_r`rarbrvwidthdashrwr r rr~szCanvas.drawLinec Ks:x4|D],\}}}} |j|||| ||fd|i|qWdS)zxDraw a set of lines of uniform color and width. lineList: a list of (x1,y1,x2,y2) line coordinates.rN)r~) r ZlineListrvrrrwr_r`rarbr r r drawLinesszCanvas.drawLinescKs tddS)z'Draw a string starting at location x,y.ruN)rM)r rGr8r9rKrvrgrwr r rruszCanvas.drawStringc Ks:|||||||||}|j|f| | | | | d|dS)z7Draw a Bezier curve with control points x1,y1 to x4,y4.) edgeColor edgeWidth fillColorclosedrN)rp drawPolygon)r r_r`rarbrkrlrmrnrrrrrrwrer r r drawCurveszCanvas.drawCurvec Ks>||f||f||f||fg} |j| |||fd|d| dS)zcDraw the rectangle between x1,y1, and x2,y2. These should have x10, and ry>0.r'iZrr)rrN)rXrY figureArc figureLine drawFigure)r r_r`rarbZrxZryrrrrrwrzrypartListr r r drawRoundRects,,,0zCanvas.drawRoundRectc Ks6|||||dd} |j| |||fd|d| dS)z}Draw an orthogonal ellipse inscribed within the rectangle x1,y1,x2,y2. These should have x1)r r_r`rarbrcrdrrrrrwcenterrer r rdrawArcs zCanvas.drawArccKs tddS)zdrawPolygon(pointlist) -- draws a polygon pointlist: a list of (x,y) tuples defining vertices closed: if 1, adds an extra segment connecting the last point to the first rN)rM)r rerrrrrrwr r rrszCanvas.drawPolygonc Ksg}x|D]} | d} t| dd} | tkrN|| dd| ddgn@| tkrh||j| n&| tkr||j| n td| |j||||f||d|q WdS)aEdrawFigure(partList) -- draws a complex figure partlist: a set of lines, curves, and arcs defined by a tuple whose first element is one of figureLine, figureArc, figureCurve and whose remaining 4, 6, or 8 elements are parameters.rrNr'zunknown figure operator: )rr) listrextendrri figureCurverpr#r) r rrrrrrrwrotupleopargsr r rrs   zCanvas.drawFigurecKs tddS)zDraw a PIL Image into the specified rectangle. If x2 and y2 are omitted, they are calculated from the image size. drawImageN)rM)r Zimager_r`rarbrwr r rrszCanvas.drawImage)r6r7)NN)N)N)N)N)N)rrP)NNr)NNN)NNN)NNr)NNNrN)NNNN)rrNNNN)NNNN)rrPNNNN)NNNrN)NNNrN)NN)rrrrrr?r@rArBrCrFrHrLrIrJrNrOrirpr}r~rrurrrrrrrrr r r rr5sB !       5          r5wbcCs@|r4t|trt||}q^s< %Y