First Commit

libraries/ssd1306/tools/modules/ttfsource.py

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+# -*- coding: UTF-8 -*-
+#    MIT License
+#
+#    Copyright (c) 2018, Alexey Dynda
+#
+#    Permission is hereby granted, free of charge, to any person obtaining a copy
+#    of this software and associated documentation files (the "Software"), to deal
+#    in the Software without restriction, including without limitation the rights
+#    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+#    copies of the Software, and to permit persons to whom the Software is
+#    furnished to do so, subject to the following conditions:
+#
+#    The above copyright notice and this permission notice shall be included in all
+#    copies or substantial portions of the Software.
+#
+#    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+#    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+#    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+#    SOFTWARE.
+#
+###################################################################################
+# Fixing pip
+# curl https://bootstrap.pypa.io/get-pip.py | python2
+# sudo pip install freetype-py
+#
+# Get fonts
+# wget https://ftp.gnu.org/gnu/freefont/freefont-ttf-20120503.zip
+
+from . import fontcontainer
+import os
+import sys
+import freetype
+
+class TTFSource(fontcontainer.FontContainer):
+    face = None
+
+    # filename - name of TTF font file (full path is supported)
+    # size - size of font (not pixels)
+    def __init__(self, filename, size):
+        fontname = os.path.basename(os.path.splitext(filename)[0])
+        fontcontainer.FontContainer.__init__(self, fontname, size)
+        self.face = freetype.Face( filename )
+        self.face.set_char_size( width=0, height=(size << 6), hres=96, vres=96 )
+
+    def add_chars(self, first, last):
+        index = self.add_group()
+        if self.first_char is None:
+            self.first_char = ord(first)
+        for code in range(ord(first), ord(last) + 1):
+            if sys.version_info < (3, 0):
+                ch = unichr( code )
+            else:
+                ch = chr( code )
+            self.__add_char(index, ch)
+        self._commit_updates()
+
+    def __add_char(self, group_index, ch):
+        self.face.load_char(ch, freetype.FT_LOAD_MONOCHROME | freetype.FT_LOAD_RENDER )
+        bitmap = self.face.glyph.bitmap
+        print(bitmap.buffer)
+        bitmap_data = []
+        for y in range( bitmap.rows ):
+            bitmap_data.append( [] )
+            for x in range( bitmap.width ):
+                b_index = y * bitmap.pitch + int(x / 8)
+                bit = 7 - int(x % 8)
+                bit_data = (bitmap.buffer[ b_index ] >> bit) & 1
+                bitmap_data[y].append( bit_data )
+        self.add_char(group_index, ch,\
+                      source=bitmap.buffer,\
+                      bitmap=bitmap_data,\
+                      width=bitmap.width,\
+                      height=bitmap.rows,\
+                      left=self.face.glyph.bitmap_left,\
+                      top=self.face.glyph.bitmap_top)
+