X-Git-Url: https://harishankar.org/repos/?p=getaclue.git;a=blobdiff_plain;f=crosswordpuzzle.py;h=e6608008c667fec891f40618ea1c9d66327f193d;hp=694a7660b19884e377ed5ff0e8435a1ba9c272b0;hb=8169cbe268942c829ff7db563b9bcb1ed4f51e1b;hpb=f9926c428d81940df4d22a6caeffa9865057b12c

diff --git a/crosswordpuzzle.py b/crosswordpuzzle.py
index 694a766..e660800 100644
--- 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