--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qmsk/irclogs/log_formatter_pil.py	Sun Sep 13 01:15:56 2009 +0300
@@ -0,0 +1,81 @@
+"""
+    Use of PIL to render the image formatting stuff
+"""
+
+from PIL import Image, ImageDraw, ImageFont
+
+from cStringIO import StringIO
+
+class PILImageFormatter (object) :
+    """
+        Mixin for LogFormatter that implements the basic image-rendering operations on top of format_txt
+    """
+    
+    # the font we load
+    font = None
+
+    # line spacing in pixels
+    LINE_SPACING = 1
+
+    def _load_font (self) :
+        """
+            Use the configured img_ttf_path for a TrueType font, or a default one
+        """
+
+        if self.font :
+            pass
+        
+        elif self.img_ttf_path :
+            # load truetype with configured size
+            self.font = ImageFont.truetype(self.img_ttf_path, self.img_font_size)
+
+        else :
+            # default
+            self.font = ImageFont.load_default()
+
+        return self.font
+
+    def format_png (self, lines, **kwargs) :
+        """
+            Build and return a PNG image of the given lines, using format_txt
+        """
+
+        # load font
+        font = self._load_font()
+
+        # build list of plain-text line data
+        lines = list(data for line, data in self.format_txt(lines, **kwargs))
+        
+        # lines sizes
+        line_sizes = [font.getsize(line) for line in lines]
+
+        # figure out how wide/high the image will be
+        width = max(width for width, height in line_sizes)
+        height = sum(height + self.LINE_SPACING for width, height in line_sizes)
+
+        # create new B/W image
+        img = Image.new('L', (width, height), 0xff)
+
+        # drawer
+        draw = ImageDraw.Draw(img)
+        
+        # starting offset
+        offset_y = 0
+
+        # draw the lines
+        for line, (width, height) in zip(lines, line_sizes) :
+            # draw
+            draw.text((0, offset_y), line, font=font)
+
+            # next offset
+            offset_y += height + self.LINE_SPACING
+        
+        # output buffer
+        buf = StringIO()
+
+        # save
+        img.save(buf, 'png')
+
+        # return data
+        return buf.getvalue()
+