Initial project import
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// vtest build: !docker-ubuntu-musl
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import x.ttf
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import os
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import strings
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/**********************************************************************
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*
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* BMP render module utility functions
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*
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* Copyright (c) 2021 Dario Deledda. All rights reserved.
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* Use of this source code is governed by an MIT license
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* that can be found in the LICENSE file.
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*
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* Note:
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* use `v -d create_data vlib/x/ttf/ttf_test.v` to generate binary data for this test file
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*
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* TODO:
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* - manage text directions R to L
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**********************************************************************/
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const font_path = 'Qarmic_sans_Abridged.ttf'
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const font_bytes = $embed_file('ttf_test_data.bin')
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const test_data = '
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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00bf bfbf bfbf bfbf bfbf bfbf bf00 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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00bf bfbf bfbf bfbf bfbf bfbf bf00 0000
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bfff ffff ffff ffff ffff ffff ffbf 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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bfff ffff ffff ffff ffff ffff ffbf 0000
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00bf ffff ffbf ffff bfff ffff bf00 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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00bf ffff ffbf ffff bfff ffff bf00 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 00bf
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ffbf 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 00bf
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ffbf 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 bfbf
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ffbf bfbf bf00 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0032 72bf
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bfbf 0000 0000 bfbf bfbf 5400 00bf ffff
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ffff ffff ffbf 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0000 0032 72bf
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0000 0000 00bf ffff bf00 0065 9999 ffff
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ffff bf00 00bf ffff ffff ff7f 0000 bfff
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bfff bfff bf00 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 0065 9999 6500
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0000 0000 00bf ffff bf00 bfff ffff ffbf
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ffff ffbf bfff bfff bfbf ffff bf00 bfff
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 bf72 3300 7fbf
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0000 0000 00bf ffff bf7f 5fff ffbf 3f7f
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8fbf ffbf ffbf 5500 0000 5fbf 0000 bfff
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf7f 5fff ffbf 3f7f
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0000 0000 00bf ffff bfbf ffbf bfbf ffff
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ffff ffbf ffff ff7f 0000 0000 0000 bfff
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfbf 00bf bfbf 8f5f
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0000 0000 00bf ffff 7f5f ffff ffff ffff
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ffff ffbf 5fbf ffff bfbf bfbf 0000 bfff
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff 7f5f 0000 0000 0000
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0000 0000 00bf ffff bfff bfff ffbf ffff
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ffff ffbf 0000 5fbf ffff ffff bf00 bfff
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bf00 0000 0000 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfff bfff ffbf ffff
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0000 0000 00bf ffff bfff bf00 0000 0000
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0000 0000 0000 0000 7f7f ffff bf00 bfff
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bf00 0000 bf00 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfff bf00 0000 0000
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0000 0000 00bf ffff bfff bf00 0000 0000
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0000 bf00 bf00 0000 0055 bfff ffbf bfff
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ff7f 00bf ff5f 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfff bf00 0000 0000
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0000 0000 00bf ffff bfbf ffbf 0000 0055
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7fbf ffbf ffbf 7f55 00bf ffff bf00 7f5f
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ff7f 7f5f ffbf 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfbf ffbf 0000 0055
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0000 0000 00bf ffff bfbf ffff bfbf bfff
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ffff bfbf ffff ffff ffff ffff bf00 00bf
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ffff ffff ffbf 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bfbf 0000 bfbf bf7f
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0000 0000 00bf ffff bf00 bfff ffff ffff
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ffbf 0000 bfbf ffff ffff bfbf 0000 00bf
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ffbf ffff bf00 0000 0000 0000 0000 0000
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0000 0000 00bf ffff bf00 bf00 0000 3f7f
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0000 0000 0000 5fbf 0000 00bf ffbf 8f5f
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3f00 0000 0000 5fbf bf5f 0000 0000 0000
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0000 bf5f 0000 0000 0000 0000 0000 0000
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0000 0000 0000 5fbf 0000 00bf ffbf 8f5f
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0000 0000 0000 0000 0000 0000 0000
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'
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fn save_raw_data_as_array(buf_bin []u8, file_name string) {
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mut buf := strings.new_builder(buf_bin.len * 5)
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for x in buf_bin {
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buf.write_string('0x${x:02x},')
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}
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os.write_file_array(file_name, buf) or { panic(err) }
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}
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fn test_main() {
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mut tf := ttf.TTF_File{}
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$if create_data ? {
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tf.buf = os.read_bytes(font_path) or { panic(err) }
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println('TrueTypeFont file [${font_path}] len: ${tf.buf.len}')
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save_raw_data_as_array(tf.buf, 'test_ttf_Font_arr.bin')
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} $else {
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mut mut_font_bytes := font_bytes
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tf.buf = unsafe { mut_font_bytes.data().vbytes(font_bytes.len) }
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}
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tf.init()
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// println("Unit per EM: ${tf.units_per_em}")
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w := 64
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h := 32
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bp := 4
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sz := w * h * bp
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font_size := 20
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device_dpi := 72
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scale := f32(font_size * device_dpi) / f32(72 * int(tf.units_per_em))
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mut bmp := ttf.BitMap{
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tf: &tf
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buf: unsafe { malloc(sz) }
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buf_size: sz
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scale: scale
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width: w
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height: h
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}
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y_base := int((tf.y_max - tf.y_min) * bmp.scale)
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bmp.clear()
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bmp.set_pos(0, y_base)
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bmp.init_filler()
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bmp.draw_text('Test Text')
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mut test_buf := get_raw_data(test_data)
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$if create_data ? {
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bmp.save_as_ppm('test_ttf.ppm')
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bmp.save_raw_data('test_ttf.bin')
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test_buf = os.read_bytes('test_ttf.bin') or { panic(err) }
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}
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ram_buf := bmp.get_raw_bytes()
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assert ram_buf.len == test_buf.len
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for i in 0 .. ram_buf.len {
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if test_buf[i] != ram_buf[i] {
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assert false
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}
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}
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}
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fn get_raw_data(data string) []u8 {
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mut buf := []u8{}
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mut c := 0
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mut b := u32(0)
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for ch in data {
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if ch >= `0` && ch <= `9` {
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b = b << 4
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b += u32(ch - `0`)
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c++
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} else if ch >= `a` && ch <= `f` {
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b = b << 4
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b += u32(ch - `a` + 10)
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c++
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}
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if c == 2 {
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buf << u8(b)
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b = 0
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c = 0
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}
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}
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return buf
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}
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