RL2

bzr revid: pinky-223ff6e649c55e0032638fd654c6a1f5d1fdcf01

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diff --git a/bin/reportlab/tools/pythonpoint/customshapes.py b/bin/reportlab/tools/pythonpoint/customshapes.py
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+#Copyright ReportLab Europe Ltd. 2000-2004
+#see license.txt for license details
+#history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/tools/pythonpoint/customshapes.py
+__version__=''' $Id: customshapes.py 2385 2004-06-17 15:26:05Z rgbecker $ '''
+
+# xml parser stuff for PythonPoint
+# PythonPoint Markup Language!
+
+__doc__="""
+This demonstrates a custom shape for use with the <customshape> tag.
+The shape must fulfil a very simple interface, which may change in
+future.
+
+The XML tag currently has this form:
+        <customshape
+            module="customshapes.py"
+            class = "MyShape"
+            initargs="(100,200,3)"
+        />
+
+PythonPoint will look in the given module for the given class,
+evaluate the arguments string and pass it to the constructor.
+Then, it will call
+
+    object.drawOn(canvas)
+
+Thus your object must be fully defined by the constructor.
+For this one, we pass three argumenyts: x, y and scale.
+This does a five-tile jigsaw over which words can be overlaid;
+based on work done for a customer's presentation.
+"""
+
+
+import reportlab.pdfgen.canvas
+from reportlab.lib import colors
+from reportlab.lib.corp import RL_CorpLogo
+from reportlab.graphics.shapes import Drawing
+
+## custom shape for use with PythonPoint.
+
+class Jigsaw:
+    """This draws a jigsaw patterm.  By default it is centred on 0,0
+    and has dimensions of 200 x 140; use the x/y/scale attributes
+    to move it around."""
+    #Using my usual bulldozer coding style - I am sure a mathematician could
+    #derive an elegant way to draw this, but I just took a ruler, guessed at
+    #the control points, and reflected a few lists at the interactive prompt.
+
+    def __init__(self, x, y, scale=1):
+        self.width = 200
+        self.height = 140
+        self.x = x
+        self.y = y
+        self.scale = scale
+
+
+    def drawOn(self, canvas):
+        canvas.saveState()
+
+        canvas.setFont('Helvetica-Bold',24)
+        canvas.drawString(600, 100, 'A Custom Shape')
+
+        canvas.translate(self.x, self.y)
+        canvas.scale(self.scale, self.scale)
+        self.drawBounds(canvas)
+
+        self.drawCentre(canvas)
+        self.drawTopLeft(canvas)
+        self.drawBottomLeft(canvas)
+        self.drawBottomRight(canvas)
+        self.drawTopRight(canvas)
+
+        canvas.restoreState()
+
+
+    def curveThrough(self, path, pointlist):
+        """Helper to curve through set of control points."""
+        assert len(pointlist) % 3 == 1, "No. of points must be 3n+1 for integer n"
+        (x,y) = pointlist[0]
+        path.moveTo(x, y)
+        idx = 1
+        while idx < len(pointlist)-2:
+            p1, p2, p3 = pointlist[idx:idx+3]
+            path.curveTo(p1[0], p1[1], p2[0], p2[1], p3[0], p3[1])
+            idx = idx + 3
+
+
+    def drawShape(self, canvas, controls, color):
+        """Utlity to draw a closed shape through a list of control points;
+        extends the previous proc"""
+        canvas.setFillColor(color)
+        p = canvas.beginPath()
+        self.curveThrough(p, controls)
+        p.close()
+        canvas.drawPath(p, stroke=1, fill=1)
+
+
+    def drawBounds(self, canvas):
+        """Guidelines to help me draw - not needed in production"""
+        canvas.setStrokeColor(colors.red)
+        canvas.rect(-100,-70,200,140)
+        canvas.line(-100,0,100,0)
+        canvas.line(0,70,0,-70)
+        canvas.setStrokeColor(colors.black)
+
+
+    def drawCentre(self, canvas):
+        controls = [ (0,50),   #top
+
+                #top right edge - duplicated for that corner piece
+                (5,50),(10,45),(10,40),
+                (10,35),(15,30),(20,30),
+                (25,30),(30,25),(30,20),
+                (30,15),(35,10),(40,10),
+                (45,10),(50,5),(50,0),
+
+                #bottom right edge
+                (50, -5), (45,-10), (40,-10),
+                (35,-10), (30,-15), (30, -20),
+                (30,-25), (25,-30), (20,-30),
+                (15,-30), (10,-35), (10,-40),
+                (10,-45),(5,-50),(0,-50),
+
+                #bottom left
+                (-5,-50),(-10,-45),(-10,-40),
+                (-10,-35),(-15,-30),(-20,-30),
+                (-25,-30),(-30,-25),(-30,-20),
+                (-30,-15),(-35,-10),(-40,-10),
+                (-45,-10),(-50,-5),(-50,0),
+
+                #top left
+                (-50,5),(-45,10),(-40,10),
+                (-35,10),(-30,15),(-30,20),
+                (-30,25),(-25,30),(-20,30),
+                (-15,30),(-10,35),(-10,40),
+                (-10,45),(-5,50),(0,50)
+
+                ]
+
+        self.drawShape(canvas, controls, colors.yellow)
+
+
+    def drawTopLeft(self, canvas):
+        controls = [(-100,70),
+            (-100,69),(-100,1),(-100,0),
+            (-99,0),(-91,0),(-90,0),
+
+            #jigsaw interlock - 4 sections
+            (-90,5),(-92,5),(-92,10),
+            (-92,15), (-85,15), (-80,15),
+            (-75,15),(-68,15),(-68,10),
+            (-68,5),(-70,5),(-70,0),
+            (-69,0),(-51,0),(-50,0),
+
+            #five distinct curves
+            (-50,5),(-45,10),(-40,10),
+            (-35,10),(-30,15),(-30,20),
+            (-30,25),(-25,30),(-20,30),
+            (-15,30),(-10,35),(-10,40),
+            (-10,45),(-5,50),(0,50),
+
+            (0,51),(0,69),(0,70),
+            (-1,70),(-99,70),(-100,70)
+            ]
+        self.drawShape(canvas, controls, colors.teal)
+
+
+    def drawBottomLeft(self, canvas):
+
+        controls = [(-100,-70),
+            (-99,-70),(-1,-70),(0,-70),
+            (0,-69),(0,-51),(0,-50),
+
+            #wavyline
+            (-5,-50),(-10,-45),(-10,-40),
+            (-10,-35),(-15,-30),(-20,-30),
+            (-25,-30),(-30,-25),(-30,-20),
+            (-30,-15),(-35,-10),(-40,-10),
+            (-45,-10),(-50,-5),(-50,0),
+
+            #jigsaw interlock - 4 sections
+
+            (-51, 0), (-69, 0), (-70, 0),
+            (-70, 5), (-68, 5), (-68, 10),
+            (-68, 15), (-75, 15), (-80, 15),
+            (-85, 15), (-92, 15), (-92, 10),
+            (-92, 5), (-90, 5), (-90, 0),
+
+            (-91,0),(-99,0),(-100,0)
+
+            ]
+        self.drawShape(canvas, controls, colors.green)
+
+
+    def drawBottomRight(self, canvas):
+
+        controls = [ (100,-70),
+            (100,-69),(100,-1),(100,0),
+            (99,0),(91,0),(90,0),
+
+            #jigsaw interlock - 4 sections
+            (90, -5), (92, -5), (92, -10),
+            (92, -15), (85, -15), (80, -15),
+            (75, -15), (68, -15), (68, -10),
+            (68, -5), (70, -5), (70, 0),
+            (69, 0), (51, 0), (50, 0),
+
+            #wavyline
+            (50, -5), (45,-10), (40,-10),
+            (35,-10), (30,-15), (30, -20),
+            (30,-25), (25,-30), (20,-30),
+            (15,-30), (10,-35), (10,-40),
+            (10,-45),(5,-50),(0,-50),
+
+            (0,-51), (0,-69), (0,-70),
+            (1,-70),(99,-70),(100,-70)
+
+            ]
+        self.drawShape(canvas, controls, colors.navy)
+
+
+    def drawBottomLeft(self, canvas):
+
+        controls = [(-100,-70),
+            (-99,-70),(-1,-70),(0,-70),
+            (0,-69),(0,-51),(0,-50),
+
+            #wavyline
+            (-5,-50),(-10,-45),(-10,-40),
+            (-10,-35),(-15,-30),(-20,-30),
+            (-25,-30),(-30,-25),(-30,-20),
+            (-30,-15),(-35,-10),(-40,-10),
+            (-45,-10),(-50,-5),(-50,0),
+
+            #jigsaw interlock - 4 sections
+
+            (-51, 0), (-69, 0), (-70, 0),
+            (-70, 5), (-68, 5), (-68, 10),
+            (-68, 15), (-75, 15), (-80, 15),
+            (-85, 15), (-92, 15), (-92, 10),
+            (-92, 5), (-90, 5), (-90, 0),
+
+            (-91,0),(-99,0),(-100,0)
+
+            ]
+        self.drawShape(canvas, controls, colors.green)
+
+
+    def drawTopRight(self, canvas):
+        controls = [(100, 70),
+            (99, 70), (1, 70), (0, 70),
+            (0, 69), (0, 51), (0, 50),
+            (5, 50), (10, 45), (10, 40),
+            (10, 35), (15, 30), (20, 30),
+            (25, 30), (30, 25), (30, 20),
+            (30, 15), (35, 10), (40, 10),
+            (45, 10), (50, 5), (50, 0),
+            (51, 0), (69, 0), (70, 0),
+            (70, -5), (68, -5), (68, -10),
+            (68, -15), (75, -15), (80, -15),
+            (85, -15), (92, -15), (92, -10),
+            (92, -5), (90, -5), (90, 0),
+            (91, 0), (99, 0), (100, 0)
+                    ]
+
+        self.drawShape(canvas, controls, colors.magenta)
+
+
+class Logo:
+    """This draws a ReportLab Logo."""
+
+    def __init__(self, x, y, width, height):
+        logo = RL_CorpLogo()
+        logo.x = x
+        logo.y = y
+        logo.width = width
+        logo.height = height
+        self.logo = logo
+
+    def drawOn(self, canvas):
+        logo = self.logo
+        x, y = logo.x, logo.y
+        w, h = logo.width, logo.height
+        D = Drawing(w, h)
+        D.add(logo)
+        D.drawOn(canvas, 0, 0)
+
+
+def run():
+    c = reportlab.pdfgen.canvas.Canvas('customshape.pdf')
+
+    J = Jigsaw(300, 540, 2)
+    J.drawOn(c)
+    c.save()
+
+
+if __name__ == '__main__':
+    run()
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