mirror of
https://github.com/libretro/RetroArch
synced 2025-02-02 14:54:10 +00:00
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "fonts.h"
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#include "bitmap.h"
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#include <string.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "../../general.h"
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static uint8_t bitmap_chars[256][50];
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struct font_renderer
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{
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unsigned scale_factor;
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};
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static void char_to_texture(uint8_t letter, uint8_t *buffer)
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{
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for (unsigned j = 0; j < FONT_HEIGHT; j++)
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{
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for (unsigned i = 0; i < FONT_WIDTH; i++)
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{
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uint8_t rem = 1 << ((i + j * FONT_WIDTH) & 7);
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unsigned offset = (i + j * FONT_WIDTH) >> 3;
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bool col = (bitmap_bin[FONT_OFFSET(letter) + offset] & rem);
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buffer[i + j * FONT_WIDTH] = col ? 0xFF : 0;
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}
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}
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}
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font_renderer_t *font_renderer_new(const char *font_path, unsigned font_size)
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{
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(void)font_size;
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font_renderer_t *handle = (font_renderer_t*)calloc(1, sizeof(*handle));
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if (!handle)
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return NULL;
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handle->scale_factor = font_size / FONT_HEIGHT;
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if (!handle->scale_factor)
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handle->scale_factor = 1;
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RARCH_LOG("scale_factor: %d\n", handle->scale_factor);
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for (unsigned i = 0; i < 256; i++)
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char_to_texture(i, bitmap_chars[i]);
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return handle;
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}
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void font_renderer_msg(font_renderer_t *handle, const char *msg, struct font_output_list *output)
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{
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output->head = NULL;
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struct font_output *cur = NULL;
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size_t len = strlen(msg);
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int off_x = 0;
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for (size_t i = 0; i < len; i++)
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{
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struct font_output *tmp = (struct font_output*)calloc(1, sizeof(*tmp));
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if (!tmp)
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break;
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tmp->output = (uint8_t*)malloc(FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor);
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if (!tmp->output)
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{
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free(tmp);
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break;
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}
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unsigned msg_char = msg[i];
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for (unsigned x = 0; x < FONT_WIDTH; x++)
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for (unsigned y = 0; y < FONT_HEIGHT; y++)
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for (unsigned xo = 0; xo < handle->scale_factor; xo++)
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for (unsigned yo = 0; yo < handle->scale_factor; yo++)
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tmp->output[x * handle->scale_factor + xo + (y * handle->scale_factor + yo) * FONT_WIDTH * handle->scale_factor] = bitmap_chars[msg_char][x + y * FONT_WIDTH];
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tmp->width = FONT_WIDTH * handle->scale_factor;
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tmp->height = FONT_HEIGHT * handle->scale_factor;
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tmp->pitch = tmp->width;
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tmp->advance_x = tmp->width;
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tmp->advance_y = tmp->height;
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tmp->char_off_x = 0;
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tmp->char_off_y = tmp->height;
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tmp->off_x = off_x;
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tmp->off_y = 0;
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tmp->next = NULL;
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if (i == 0)
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output->head = tmp;
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else
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cur->next = tmp;
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cur = tmp;
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off_x += FONT_WIDTH_STRIDE * handle->scale_factor;
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}
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}
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void font_renderer_free_output(struct font_output_list *output)
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{
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struct font_output *itr = output->head;
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struct font_output *tmp = NULL;
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while (itr != NULL)
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{
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free(itr->output);
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tmp = itr;
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itr = itr->next;
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free(tmp);
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}
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output->head = NULL;
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}
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void font_renderer_free(font_renderer_t *handle)
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{
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free(handle);
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}
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const char *font_renderer_get_default_font(void)
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{
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return "";
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}
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