Export as image functionality halfway done

[getaclue.git] / crosswordpuzzle.py

diff --git a/crosswordpuzzle.py b/crosswordpuzzle.py
index 694a766..e660800 100644 (file)
--- a/crosswordpuzzle.py
+++ b/crosswordpuzzle.py
@@ -4,6 +4,8 @@
 
 # Class for the puzzle data representation
 
+import cairo
+
 class GridItem:
        # initialize the item
        def __init__ (self, item_char='.', across_start = False, down_start = False,
@@ -73,9 +75,57 @@ class CrosswordPuzzle:
                        for j in range (cols):
                                self.data[i].append (GridItem ())
 
+       # export to an image
+       def export_image (self, filename, solution=False):
+               # don't export if grid is not frozen
+               if self.frozen_grid is False:
+                       raise FrozenGridException
+
+               # create cairo image surface and context
+               px = 30
+               surf = cairo.ImageSurface (cairo.FORMAT_RGB24, self.cols*px, self.rows*px)
+               ctx = cairo.Context (surf)
+
+               ctx.set_source_rgb (1, 1, 1)
+               ctx.rectangle (0, 0, self.cols*px, self.rows*px)
+               ctx.fill ()
+
+               # traverse through the grid
+               for row in range (self.rows):
+                       for col in range (self.cols):
+                               # if grid is un-occupied
+                               if (self.data[row][col].occupied_across is False and
+                                       self.data[row][col].occupied_down is False):
+                                       ctx.set_source_rgb (0, 0, 0)
+                                       ctx.rectangle (col*px, row*px, px, px)
+                                       ctx.fill ()
+                               # grid is occupied
+                               else:
+                                       ctx.set_source_rgb (1, 1, 1)
+                                       ctx.rectangle (col*px, row*px, px, px)
+                                       ctx.fill ()
+                                       ctx.set_source_rgb (0, 0, 0)
+                                       ctx.rectangle (col*px, row*px, px, px)
+                                       ctx.stroke ()
+                                       # if solution is not to be provided, number the grid
+                                       if solution is False:
+                                               if self.data[row][col].numbered <> 0:
+                                                       ctx.select_font_face ("Serif")
+                                                       ctx.set_font_size (10)
+                                                       ctx.move_to (col*px+5, row*px+10)
+                                                       ctx.show_text (str(self.data[row][col].numbered))
+                                       # display the words
+                                       else:
+                                               ctx.select_font_face ("Serif")
+                                               ctx.set_font_size (16)
+                                               ctx.move_to (col*px+10, row*px+20)
+                                               ctx.show_text (self.data[row][col].char)
+
+               surf.write_to_png (open (filename, "wb"))
+
        # get the AcrossLite(TM) data for exporting
        def export_acrosslite (self, title, author, copyright):
-               # don't export if grid is frozen
+               # don't export if grid is not frozen
                if self.frozen_grid is False:
                        raise FrozenGridException