creating new project for Ruler

1 files changed, 139 insertions, 0 deletions

diff --git a/show_rulers.py b/show_rulers.py
new file mode 100644
index 0000000..7c2ef59
--- /dev/null
+++ b/show_rulers.py
@@ -0,0 +1,139 @@
+# Copyright 2007 Mitchell N. Charity
+#
+# This file is part of Ruler.
+#
+# Ruler is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ruler is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ruler.  If not, see <http://www.gnu.org/licenses/>
+
+from __future__ import division
+import paper
+import cairo
+from util import mm
+
+def subactivity_init(api):
+    api.declare_subactivity('ruler', ScreenOfRulers())
+
+class ScreenOfRulers(paper.Drawing):
+    def draw(self,c):
+        self.set_background_color('white')
+
+        c.set_antialias(cairo.ANTIALIAS_GRAY)
+
+        self.draw_ruler_pair(c,mm(20))
+
+        offset_of_xo_side_from_screen = mm(-38.5) #XXX needs checking
+        c.move_to(offset_of_xo_side_from_screen, mm(65))
+        self.draw_cm_ruler(c,180)
+            
+        offset_of_molding_from_screen = mm(-0.4) #XXX +- 0.2 ??
+        c.move_to(offset_of_molding_from_screen, mm(100))
+        self.draw_cm_ruler(c,150)
+
+    def draw_ruler_pair(self,c,y):
+
+        c.move_to(mm(10),y)
+        self.connect_rulers(c)
+
+        c.move_to(mm(10),y)
+        self.draw_cm_ruler(c)
+
+        c.move_to(mm(10),y+mm(10))
+        self.draw_mm_ruler(c)
+        
+    def connect_rulers(self,c):
+        c.save()
+        c.set_line_cap(cairo.LINE_CAP_SQUARE)
+        c.translate(*c.get_current_point())
+
+        c.set_line_width(1)
+        for xm in range(0,130+1,10):
+            c.move_to(mm(xm),0)
+            c.rel_line_to(0,mm(10))
+        c.stroke()
+
+        c.set_line_width(2)
+        c.move_to(0,0)
+        c.rel_line_to(0,mm(10))
+        c.stroke()
+
+        c.restore()
+
+    def draw_cm_ruler(self,c,width=130):
+
+        c.save()
+        c.set_line_cap(cairo.LINE_CAP_SQUARE)
+        c.translate(*c.get_current_point())
+
+        c.set_line_width(5)
+        c.move_to(0,0)
+        c.line_to(mm(width),0)
+        for x in [mm(xm) for xm in range(0,width+1,10)]:
+            c.move_to(x,0)
+            c.rel_line_to(0,mm(-3))
+        c.stroke()
+
+        self.set_font('helvetica bold 12')
+        self.set_fontsize(mm(2.5))
+
+        for x,xm in [(mm(xm),xm) for xm in range(0,width+1,10)]:
+            n = xm/10
+            c.move_to(x,mm(-4))
+            self.write("%d" % n,centered=True)
+            
+        self.set_font('helvetica 12')
+        self.set_fontsize(mm(2))
+
+        c.move_to(mm(1.5),mm(-4))
+        self.write("cm")
+
+        c.restore()
+
+    def draw_mm_ruler(self,c,width=130):
+
+        c.save()
+        c.set_line_cap(cairo.LINE_CAP_SQUARE)
+        c.translate(*c.get_current_point())
+
+        c.move_to(0,0)
+        c.set_line_width(4)
+        c.line_to(mm(width),0)
+        for x in [mm(xm) for xm in range(0,width+1,10)]:
+            c.move_to(x,0)
+            c.rel_line_to(0,mm(3))
+        c.stroke()
+
+        c.set_line_width(3)
+        for x in [mm(xm) for xm in range(0,width,5)]:
+            c.move_to(x,0)
+            c.rel_line_to(0,mm(2.2))
+        for x in [mm(xm) for xm in range(0,width,1)]:
+            c.move_to(x,0)
+            c.rel_line_to(0,mm(2))
+        c.stroke()
+
+        self.set_font('helvetica 12')
+        self.set_fontsize(mm(2))
+
+        base = mm(7)
+        for x,xm in [(mm(xm),xm) for xm in range(0,width+1,10)]:
+            c.move_to(x,base)
+            self.write("%d" % xm,centered=True)
+            
+        self.set_font('helvetica 12')
+        self.set_fontsize(mm(1.5))
+
+        c.move_to(mm(1.2),base)
+        self.write("mm")
+
+        c.restore()
+