test public
Dependencies: HttpServer_snapshot_mbed-os
mbed-gr-libs/AsciiFont/AsciiFont.cpp@0:e9fd5575b10e, 2019-10-18 (annotated)
- Committer:
- anhtran
- Date:
- Fri Oct 18 03:09:43 2019 +0000
- Revision:
- 0:e9fd5575b10e
abc
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
anhtran | 0:e9fd5575b10e | 1 | /* Copyright (c) 2016 dkato |
anhtran | 0:e9fd5575b10e | 2 | * SPDX-License-Identifier: Apache-2.0 |
anhtran | 0:e9fd5575b10e | 3 | * |
anhtran | 0:e9fd5575b10e | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
anhtran | 0:e9fd5575b10e | 5 | * you may not use this file except in compliance with the License. |
anhtran | 0:e9fd5575b10e | 6 | * You may obtain a copy of the License at |
anhtran | 0:e9fd5575b10e | 7 | * |
anhtran | 0:e9fd5575b10e | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
anhtran | 0:e9fd5575b10e | 9 | * |
anhtran | 0:e9fd5575b10e | 10 | * Unless required by applicable law or agreed to in writing, software |
anhtran | 0:e9fd5575b10e | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
anhtran | 0:e9fd5575b10e | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
anhtran | 0:e9fd5575b10e | 13 | * See the License for the specific language governing permissions and |
anhtran | 0:e9fd5575b10e | 14 | * limitations under the License. |
anhtran | 0:e9fd5575b10e | 15 | */ |
anhtran | 0:e9fd5575b10e | 16 | #include "mbed.h" |
anhtran | 0:e9fd5575b10e | 17 | #include "AsciiFont.h" |
anhtran | 0:e9fd5575b10e | 18 | #include "ascii.h" |
anhtran | 0:e9fd5575b10e | 19 | |
anhtran | 0:e9fd5575b10e | 20 | AsciiFont::AsciiFont(uint8_t * p_buf, int width, int height, int stride, int byte_per_pixel, uint32_t const colour) : |
anhtran | 0:e9fd5575b10e | 21 | p_text_field(p_buf), max_width(width), max_height(height), buf_stride(stride), pixel_num(byte_per_pixel), background_colour(colour) { |
anhtran | 0:e9fd5575b10e | 22 | |
anhtran | 0:e9fd5575b10e | 23 | } |
anhtran | 0:e9fd5575b10e | 24 | |
anhtran | 0:e9fd5575b10e | 25 | void AsciiFont::Erase() { |
anhtran | 0:e9fd5575b10e | 26 | Erase(background_colour, 0, 0, max_width, max_height); |
anhtran | 0:e9fd5575b10e | 27 | } |
anhtran | 0:e9fd5575b10e | 28 | |
anhtran | 0:e9fd5575b10e | 29 | void AsciiFont::Erase(uint32_t const colour) { |
anhtran | 0:e9fd5575b10e | 30 | Erase(colour, 0, 0, max_width, max_height); |
anhtran | 0:e9fd5575b10e | 31 | } |
anhtran | 0:e9fd5575b10e | 32 | |
anhtran | 0:e9fd5575b10e | 33 | void AsciiFont::Erase(uint32_t const colour, int x, int y, int width, int height) { |
anhtran | 0:e9fd5575b10e | 34 | int idx_base; |
anhtran | 0:e9fd5575b10e | 35 | int wk_idx, i, j ,k; |
anhtran | 0:e9fd5575b10e | 36 | |
anhtran | 0:e9fd5575b10e | 37 | background_colour = colour; |
anhtran | 0:e9fd5575b10e | 38 | if ((x + width) > max_width) { |
anhtran | 0:e9fd5575b10e | 39 | width = max_width - x; |
anhtran | 0:e9fd5575b10e | 40 | } |
anhtran | 0:e9fd5575b10e | 41 | if ((y + height) > max_height) { |
anhtran | 0:e9fd5575b10e | 42 | height = max_height - y; |
anhtran | 0:e9fd5575b10e | 43 | } |
anhtran | 0:e9fd5575b10e | 44 | idx_base = (x * pixel_num) + (buf_stride * y); |
anhtran | 0:e9fd5575b10e | 45 | for (i = 0; i < height; i++) { |
anhtran | 0:e9fd5575b10e | 46 | wk_idx = idx_base + (buf_stride * i); |
anhtran | 0:e9fd5575b10e | 47 | for (j = 0; j < width; j++) { |
anhtran | 0:e9fd5575b10e | 48 | for (k = (pixel_num - 1); k >= 0; k--) { |
anhtran | 0:e9fd5575b10e | 49 | p_text_field[wk_idx++] = (uint8_t)(background_colour >> (8 * k)); |
anhtran | 0:e9fd5575b10e | 50 | } |
anhtran | 0:e9fd5575b10e | 51 | } |
anhtran | 0:e9fd5575b10e | 52 | } |
anhtran | 0:e9fd5575b10e | 53 | } |
anhtran | 0:e9fd5575b10e | 54 | |
anhtran | 0:e9fd5575b10e | 55 | int AsciiFont::DrawStr(const char * str, int x, int y, uint32_t const colour, int font_size, uint16_t const max_char_num) { |
anhtran | 0:e9fd5575b10e | 56 | int char_num = 0; |
anhtran | 0:e9fd5575b10e | 57 | |
anhtran | 0:e9fd5575b10e | 58 | if ((str == NULL) || (font_size <= 0)) { |
anhtran | 0:e9fd5575b10e | 59 | return 0; |
anhtran | 0:e9fd5575b10e | 60 | } |
anhtran | 0:e9fd5575b10e | 61 | while ((*str != '\0') && (char_num < max_char_num)) { |
anhtran | 0:e9fd5575b10e | 62 | if (DrawChar(*str, x, y, colour, font_size) == false) { |
anhtran | 0:e9fd5575b10e | 63 | break; |
anhtran | 0:e9fd5575b10e | 64 | } |
anhtran | 0:e9fd5575b10e | 65 | str++; |
anhtran | 0:e9fd5575b10e | 66 | x += CHAR_PIX_WIDTH * font_size; |
anhtran | 0:e9fd5575b10e | 67 | char_num++; |
anhtran | 0:e9fd5575b10e | 68 | } |
anhtran | 0:e9fd5575b10e | 69 | return char_num; |
anhtran | 0:e9fd5575b10e | 70 | } |
anhtran | 0:e9fd5575b10e | 71 | |
anhtran | 0:e9fd5575b10e | 72 | bool AsciiFont::DrawChar(char c, int x, int y, uint32_t const colour, int font_size) { |
anhtran | 0:e9fd5575b10e | 73 | int idx_base; |
anhtran | 0:e9fd5575b10e | 74 | int idx_y = 0; |
anhtran | 0:e9fd5575b10e | 75 | int wk_idx, i, j ,k, fw, fh; |
anhtran | 0:e9fd5575b10e | 76 | char * p_pattern; |
anhtran | 0:e9fd5575b10e | 77 | uint8_t mask = 0x80; |
anhtran | 0:e9fd5575b10e | 78 | uint32_t wk_colour; |
anhtran | 0:e9fd5575b10e | 79 | |
anhtran | 0:e9fd5575b10e | 80 | if (font_size <= 0) { |
anhtran | 0:e9fd5575b10e | 81 | return false; |
anhtran | 0:e9fd5575b10e | 82 | } |
anhtran | 0:e9fd5575b10e | 83 | if ((x + (CHAR_PIX_WIDTH * font_size)) > max_width) { |
anhtran | 0:e9fd5575b10e | 84 | return false; |
anhtran | 0:e9fd5575b10e | 85 | } |
anhtran | 0:e9fd5575b10e | 86 | if ((y + (CHAR_PIX_HEIGHT * font_size)) > max_height) { |
anhtran | 0:e9fd5575b10e | 87 | return false; |
anhtran | 0:e9fd5575b10e | 88 | } |
anhtran | 0:e9fd5575b10e | 89 | |
anhtran | 0:e9fd5575b10e | 90 | if ((c >= 0x20) && (c <= 0x7e)) { |
anhtran | 0:e9fd5575b10e | 91 | p_pattern = (char *)&g_ascii_table[c - 0x20][0]; |
anhtran | 0:e9fd5575b10e | 92 | } else { |
anhtran | 0:e9fd5575b10e | 93 | p_pattern = (char *)&g_ascii_table[10][0]; /* '*' */ |
anhtran | 0:e9fd5575b10e | 94 | } |
anhtran | 0:e9fd5575b10e | 95 | idx_base = (x * pixel_num) + (buf_stride * y); |
anhtran | 0:e9fd5575b10e | 96 | |
anhtran | 0:e9fd5575b10e | 97 | /* Drawing */ |
anhtran | 0:e9fd5575b10e | 98 | for (i = 0; i < CHAR_PIX_HEIGHT; i++) { |
anhtran | 0:e9fd5575b10e | 99 | for (fh = 0; fh < font_size; fh++) { |
anhtran | 0:e9fd5575b10e | 100 | wk_idx = idx_base + (buf_stride * idx_y); |
anhtran | 0:e9fd5575b10e | 101 | for (j = 0; j < CHAR_PIX_WIDTH; j++) { |
anhtran | 0:e9fd5575b10e | 102 | if (p_pattern[j] & mask) { |
anhtran | 0:e9fd5575b10e | 103 | wk_colour = colour; |
anhtran | 0:e9fd5575b10e | 104 | } else { |
anhtran | 0:e9fd5575b10e | 105 | wk_colour = background_colour; |
anhtran | 0:e9fd5575b10e | 106 | } |
anhtran | 0:e9fd5575b10e | 107 | for (fw = 0; fw < font_size; fw++) { |
anhtran | 0:e9fd5575b10e | 108 | for (k = (pixel_num - 1); k >= 0; k--) { |
anhtran | 0:e9fd5575b10e | 109 | p_text_field[wk_idx++] = (uint8_t)(wk_colour >> (8 * k)); |
anhtran | 0:e9fd5575b10e | 110 | } |
anhtran | 0:e9fd5575b10e | 111 | } |
anhtran | 0:e9fd5575b10e | 112 | } |
anhtran | 0:e9fd5575b10e | 113 | idx_y++; |
anhtran | 0:e9fd5575b10e | 114 | } |
anhtran | 0:e9fd5575b10e | 115 | mask = (uint8_t)(mask >> 1); |
anhtran | 0:e9fd5575b10e | 116 | } |
anhtran | 0:e9fd5575b10e | 117 | return true; |
anhtran | 0:e9fd5575b10e | 118 | } |
anhtran | 0:e9fd5575b10e | 119 |