243 lines
86 KiB
V
243 lines
86 KiB
V
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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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*
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* TODO:
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* - manage text directions R to L
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**********************************************************************/
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import ttf
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import os
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import strings
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const (
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font_path = "Qarmic_sans_Abridged.ttf"
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create_data = false // use true to generate binary data for this test file
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)
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fn save_raw_data_as_array(buf_bin []byte, 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("0x${x:02x},")
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}
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os.write_file_array(file_name, buf.buf)
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}
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fn test_main() {
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mut tf := ttf.TTF_File{}
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if create_data == true {
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tf.buf = os.read_bytes(font_path) or { panic(err) }
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println("TrueTypeFont file [$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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tf.buf = font_bytes
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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 * tf.units_per_em)
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mut bmp := ttf.BitMap{
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tf : &tf
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buf : 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 == true {
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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) []byte{
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mut buf := []byte{}
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mut c := 0
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mut b := 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 += int(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 += int(ch - `a` + 10)
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c++
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}
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if c == 2 {
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buf << byte(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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const(
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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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font_bytes = [
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|
||
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|
]
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||
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|
)
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