mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-14 22:38:34 +00:00
149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - 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 <math.h>
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#include "../../msvc/msvc_compat.h"
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#include "../../boolean.h"
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struct font_renderer
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{
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unsigned scale_factor;
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uint8_t *bitmap_chars[256];
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uint8_t *bitmap_alloc;
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};
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static void char_to_texture(font_renderer_t *handle, uint8_t letter)
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{
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unsigned y, x, xo, yo;
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handle->bitmap_chars[letter] = &handle->bitmap_alloc[letter * FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor];
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for (y = 0; y < FONT_HEIGHT; y++)
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{
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for (x = 0; x < FONT_WIDTH; x++)
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{
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uint8_t rem = 1 << ((x + y * FONT_WIDTH) & 7);
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unsigned offset = (x + y * FONT_WIDTH) >> 3;
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uint8_t col = (bitmap_bin[FONT_OFFSET(letter) + offset] & rem) ? 0xFF : 0;
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for (xo = 0; xo < handle->scale_factor; xo++)
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for (yo = 0; yo < handle->scale_factor; yo++)
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handle->bitmap_chars[letter][x * handle->scale_factor + xo + (y * handle->scale_factor + yo) * FONT_WIDTH * handle->scale_factor] = col;
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}
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}
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}
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static void *font_renderer_init(const char *font_path, float font_size)
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{
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unsigned i;
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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 = (unsigned)roundf(font_size / FONT_HEIGHT);
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if (!handle->scale_factor)
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handle->scale_factor = 1;
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handle->bitmap_alloc = (uint8_t*)malloc(FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor * 256);
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if (!handle->bitmap_alloc)
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{
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free(handle);
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return NULL;
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}
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for (i = 0; i < 256; i++)
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char_to_texture(handle, i);
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return handle;
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}
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static void font_renderer_msg(void *data, const char *msg, struct font_output_list *output)
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{
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size_t i;
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font_renderer_t *handle = (font_renderer_t*)data;
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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 (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 = handle->bitmap_chars[(unsigned) msg[i]];
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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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static void font_renderer_free_output(void *data, struct font_output_list *output)
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{
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(void)data;
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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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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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static void font_renderer_free(void *data)
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{
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font_renderer_t *handle = (font_renderer_t*)data;
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free(handle->bitmap_alloc);
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free(handle);
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}
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static 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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const font_renderer_driver_t bitmap_font_renderer = {
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font_renderer_init,
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font_renderer_msg,
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font_renderer_free_output,
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font_renderer_free,
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font_renderer_get_default_font,
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"bitmap",
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};
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