1 files changed, 73 insertions, 0 deletions
diff --git a/third_party/freetype-py/examples/agg-trick.py b/third_party/freetype-py/examples/agg-trick.py
new file mode 100644
index 0000000..c0bc134
--- /dev/null
+++ b/third_party/freetype-py/examples/agg-trick.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+#
+#  FreeType high-level python API - Copyright 2011 Nicolas P. Rougier
+#  Distributed under the terms of the new BSD license.
+#
+# -----------------------------------------------------------------------------
+from freetype import *
+import numpy as np
+import Image
+
+
+def render(filename = "Vera.ttf", hinting = (False,False), gamma = 1.5, lcd=False):
+    text = "A Quick Brown Fox Jumps Over The Lazy Dog 0123456789"
+
+    W,H,D = 680, 280, 1
+    Z = np.zeros( (H,W), dtype=np.ubyte )
+    face = Face(filename)
+    pen = Vector(5*64, (H-10)*64)
+
+    flags = FT_LOAD_RENDER
+    if hinting[1]: flags |= FT_LOAD_FORCE_AUTOHINT
+    else:          flags |= FT_LOAD_NO_HINTING
+    if hinting[0]: hres, hscale = 72,    1.0
+    else:          hres, hscale = 72*10, 0.1
+    if lcd:
+        flags |= FT_LOAD_TARGET_LCD
+        Z = np.zeros( (H,W,3), dtype=np.ubyte )
+        set_lcd_filter( FT_LCD_FILTER_DEFAULT )
+
+
+    for size in range(9,23):
+        face.set_char_size( size * 64, 0, hres, 72 )
+        matrix = Matrix( int((hscale) * 0x10000L), int((0.0) * 0x10000L),
+                         int((0.0)    * 0x10000L), int((1.0) * 0x10000L) )
+        previous = 0
+        pen.x = 5*64
+        for current in text:
+            face.set_transform( matrix, pen )
+            face.load_char( current, flags)
+            kerning = face.get_kerning( previous, current, FT_KERNING_UNSCALED )
+            pen.x += kerning.x
+            glyph = face.glyph
+            bitmap = glyph.bitmap
+            x, y = glyph.bitmap_left, glyph.bitmap_top
+            w, h, p = bitmap.width, bitmap.rows, bitmap.pitch
+            buff = np.array(bitmap.buffer, dtype=np.ubyte).reshape((h,p))
+            if lcd:
+                Z[H-y:H-y+h,x:x+w/3].flat |= buff[:,:w].flatten()
+            else:
+                Z[H-y:H-y+h,x:x+w].flat |= buff[:,:w].flatten()
+            pen.x += glyph.advance.x
+            previous = current
+        pen.y -= (size+4)*64
+
+    # Gamma correction
+    Z = (Z/255.0)**(gamma)
+    Z = ((1-Z)*255).astype(np.ubyte)
+    if lcd:
+        I = Image.fromarray(Z, mode='RGB')
+    else:
+        I = Image.fromarray(Z, mode='L')
+ 
+    name = filename.split('.')[0]
+    filename = '%s-gamma(%.1f)-hinting(%d,%d)-lcd(%d).png' % (name,gamma,hinting[0],hinting[1],lcd)
+    I.save(filename)
+
+
+
+if __name__ == '__main__':
+    render('Vera.ttf', (0,1), 1.25, True)
+