test public
Dependencies: HttpServer_snapshot_mbed-os
mbed-gr-libs/AsciiFont/AsciiFont.cpp
- Committer:
- anhtran
- Date:
- 2019-10-18
- Revision:
- 0:e9fd5575b10e
File content as of revision 0:e9fd5575b10e:
/* Copyright (c) 2016 dkato * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" #include "AsciiFont.h" #include "ascii.h" AsciiFont::AsciiFont(uint8_t * p_buf, int width, int height, int stride, int byte_per_pixel, uint32_t const colour) : p_text_field(p_buf), max_width(width), max_height(height), buf_stride(stride), pixel_num(byte_per_pixel), background_colour(colour) { } void AsciiFont::Erase() { Erase(background_colour, 0, 0, max_width, max_height); } void AsciiFont::Erase(uint32_t const colour) { Erase(colour, 0, 0, max_width, max_height); } void AsciiFont::Erase(uint32_t const colour, int x, int y, int width, int height) { int idx_base; int wk_idx, i, j ,k; background_colour = colour; if ((x + width) > max_width) { width = max_width - x; } if ((y + height) > max_height) { height = max_height - y; } idx_base = (x * pixel_num) + (buf_stride * y); for (i = 0; i < height; i++) { wk_idx = idx_base + (buf_stride * i); for (j = 0; j < width; j++) { for (k = (pixel_num - 1); k >= 0; k--) { p_text_field[wk_idx++] = (uint8_t)(background_colour >> (8 * k)); } } } } int AsciiFont::DrawStr(const char * str, int x, int y, uint32_t const colour, int font_size, uint16_t const max_char_num) { int char_num = 0; if ((str == NULL) || (font_size <= 0)) { return 0; } while ((*str != '\0') && (char_num < max_char_num)) { if (DrawChar(*str, x, y, colour, font_size) == false) { break; } str++; x += CHAR_PIX_WIDTH * font_size; char_num++; } return char_num; } bool AsciiFont::DrawChar(char c, int x, int y, uint32_t const colour, int font_size) { int idx_base; int idx_y = 0; int wk_idx, i, j ,k, fw, fh; char * p_pattern; uint8_t mask = 0x80; uint32_t wk_colour; if (font_size <= 0) { return false; } if ((x + (CHAR_PIX_WIDTH * font_size)) > max_width) { return false; } if ((y + (CHAR_PIX_HEIGHT * font_size)) > max_height) { return false; } if ((c >= 0x20) && (c <= 0x7e)) { p_pattern = (char *)&g_ascii_table[c - 0x20][0]; } else { p_pattern = (char *)&g_ascii_table[10][0]; /* '*' */ } idx_base = (x * pixel_num) + (buf_stride * y); /* Drawing */ for (i = 0; i < CHAR_PIX_HEIGHT; i++) { for (fh = 0; fh < font_size; fh++) { wk_idx = idx_base + (buf_stride * idx_y); for (j = 0; j < CHAR_PIX_WIDTH; j++) { if (p_pattern[j] & mask) { wk_colour = colour; } else { wk_colour = background_colour; } for (fw = 0; fw < font_size; fw++) { for (k = (pixel_num - 1); k >= 0; k--) { p_text_field[wk_idx++] = (uint8_t)(wk_colour >> (8 * k)); } } } idx_y++; } mask = (uint8_t)(mask >> 1); } return true; }