text

examples/text.py

@@ -1,54 +1,90 @@
+from __future__ import division
+
 import axi
+import itertools
+import string
 
-LINES = [
-    'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor',
-    'incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis',
-    'nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.',
-    'Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu',
-    'fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in',
-    'culpa qui officia deserunt mollit anim id est laborum.',
-]
+TEXT = (
+    'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor '
+    'incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis '
+    'nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. '
+    'Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu '
+    'fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in '
+    'culpa qui officia deserunt mollit anim id est laborum. '
+)
 
-LINES = [
-    'When you wish upon a star',
-    'Makes no difference who you are',
-    'Anything your heart desires will come to you',
-]
-
-LINES = [
-    'Five Seconds of Donkey Kong'
-]
-
-def stack_drawings(ds, spacing=0):
-    result = axi.Drawing()
-    y = 0
-    for d in ds:
-        d = d.origin().translate(-d.width / 2, y)
-        result.add(d)
-        y += d.height + spacing
+def word_wrap(text, width, measure_func):
+    result = []
+    for line in text.split('\n'):
+        fields = itertools.groupby(line, lambda x: x.isspace())
+        fields = [''.join(g) for _, g in fields]
+        if len(fields) % 2 == 1:
+            fields.append('')
+        x = ''
+        for a, b in zip(fields[::2], fields[1::2]):
+            w, _ = measure_func(x + a)
+            if w > width:
+                if x == '':
+                    result.append(a)
+                    continue
+                else:
+                    result.append(x)
+                    x = ''
+            x += a + b
+        if x != '':
+            result.append(x)
+    result = [x.strip() for x in result]
     return result
 
+class Font(object):
+    def __init__(self, font, point_size):
+        self.font = font
+        self.max_height = axi.Drawing(axi.text(string.printable, font)).height
+        # self.cap_height = axi.Drawing(axi.text('H', font)).height
+        height = point_size / 72
+        self.scale = height / self.max_height
+    def text(self, text):
+        d = axi.Drawing(axi.text(text, self.font))
+        d = d.scale(self.scale)
+        return d
+    def justify_text(self, text, width):
+        d = self.text(text)
+        w = d.width
+        spaces = text.count(' ')
+        if spaces == 0 or w >= width:
+            return d
+        e = ((width - w) / spaces) / self.scale
+        d = axi.Drawing(axi.text(text, self.font, extra=e))
+        d = d.scale(self.scale)
+        return d
+    def measure(self, text):
+        return self.text(text).size
+    def wrap(self, text, width, line_spacing=1, align=0, justify=False):
+        lines = word_wrap(text, width, self.measure)
+        ds = [self.text(line) for line in lines]
+        max_width = max(d.width for d in ds)
+        if justify:
+            jds = [self.justify_text(line, max_width) for line in lines]
+            ds = jds[:-1] + [ds[-1]]
+        spacing = line_spacing * self.max_height * self.scale
+        result = axi.Drawing()
+        y = 0
+        for d in ds:
+            if align == 0:
+                x = 0
+            elif align == 1:
+                x = max_width - d.width
+            else:
+                x = max_width / 2 - d.width / 2
+            result.add(d.translate(x, y))
+            y += spacing
+        return result
+
 def main():
-    font = axi.FUTURAM
-    ds = [axi.Drawing(axi.text(line, font)).scale_to_fit_height(1) for line in LINES]
-    d = stack_drawings(ds, 0.1)
-    # d = d.rotate_and_scale_to_fit(12, 8.5, step=90)
-    # d = d.scale(0.02, 0.02)
-    # d = d.center(12, 8.5)
-    # d = d.move(0, 0, 0, 0)
-    d = d.scale_to_fit(12, 8.5)
-    d = d.scale_to_fit(12, 0.25)
-    # d = d.center(12, 8.5)
-    d = d.move(6, 0, 0.5, 0)
-    d = d.translate(0, 0.01)
-
-    d = d.move(6, 8.5, 0.5, 1)
-    d = d.translate(0, -0.01)
-
-    d = d.join_paths(0.01)
-    d.render().write_to_png('out.png')
-    print sum(x.t for x in axi.Device().plan_drawing(d))
-    axi.draw(d)
+    font = Font(axi.FUTURAL, 18)
+    d = font.wrap(TEXT * 2, 12, 1.5, justify=True)
+    d = d.center(12, 8.5)
+    d.render(bounds=axi.V3_BOUNDS).write_to_png('out.png')
 
 if __name__ == '__main__':
     main()