mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 18:23:45 +00:00
146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "fonts.h"
|
|
#include "bitmap.h"
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
#include "../../msvc/msvc_compat.h"
|
|
#include "../../boolean.h"
|
|
|
|
struct font_renderer
|
|
{
|
|
unsigned scale_factor;
|
|
uint8_t *bitmap_chars[256];
|
|
uint8_t *bitmap_alloc;
|
|
};
|
|
|
|
static void char_to_texture(font_renderer_t *handle, uint8_t letter)
|
|
{
|
|
handle->bitmap_chars[letter] = &handle->bitmap_alloc[letter * FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor];
|
|
for (unsigned y = 0; y < FONT_HEIGHT; y++)
|
|
{
|
|
for (unsigned x = 0; x < FONT_WIDTH; x++)
|
|
{
|
|
uint8_t rem = 1 << ((x + y * FONT_WIDTH) & 7);
|
|
unsigned offset = (x + y * FONT_WIDTH) >> 3;
|
|
uint8_t col = (bitmap_bin[FONT_OFFSET(letter) + offset] & rem) ? 0xFF : 0;
|
|
|
|
for (unsigned xo = 0; xo < handle->scale_factor; xo++)
|
|
for (unsigned yo = 0; yo < handle->scale_factor; yo++)
|
|
handle->bitmap_chars[letter][x * handle->scale_factor + xo + (y * handle->scale_factor + yo) * FONT_WIDTH * handle->scale_factor] = col;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void *font_renderer_init(const char *font_path, float font_size)
|
|
{
|
|
font_renderer_t *handle = (font_renderer_t*)calloc(1, sizeof(*handle));
|
|
if (!handle)
|
|
return NULL;
|
|
|
|
handle->scale_factor = (unsigned)roundf(font_size / FONT_HEIGHT);
|
|
if (!handle->scale_factor)
|
|
handle->scale_factor = 1;
|
|
|
|
handle->bitmap_alloc = (uint8_t*)malloc(FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor * 256);
|
|
|
|
if (!handle->bitmap_alloc)
|
|
{
|
|
free(handle);
|
|
return NULL;
|
|
}
|
|
|
|
for (unsigned i = 0; i < 256; i++)
|
|
char_to_texture(handle, i);
|
|
|
|
return handle;
|
|
}
|
|
|
|
static void font_renderer_msg(void *data, const char *msg, struct font_output_list *output)
|
|
{
|
|
font_renderer_t *handle = (font_renderer_t*)data;
|
|
output->head = NULL;
|
|
|
|
struct font_output *cur = NULL;
|
|
size_t len = strlen(msg);
|
|
int off_x = 0;
|
|
|
|
for (size_t i = 0; i < len; i++)
|
|
{
|
|
struct font_output *tmp = (struct font_output*)calloc(1, sizeof(*tmp));
|
|
if (!tmp)
|
|
break;
|
|
|
|
tmp->output = handle->bitmap_chars[(unsigned) msg[i]];
|
|
tmp->width = FONT_WIDTH * handle->scale_factor;
|
|
tmp->height = FONT_HEIGHT * handle->scale_factor;
|
|
tmp->pitch = tmp->width;
|
|
tmp->advance_x = tmp->width;
|
|
tmp->advance_y = tmp->height;
|
|
tmp->char_off_x = 0;
|
|
tmp->char_off_y = tmp->height;
|
|
tmp->off_x = off_x;
|
|
tmp->off_y = 0;
|
|
tmp->next = NULL;
|
|
|
|
if (i == 0)
|
|
output->head = tmp;
|
|
else
|
|
cur->next = tmp;
|
|
|
|
cur = tmp;
|
|
|
|
off_x += FONT_WIDTH_STRIDE * handle->scale_factor;
|
|
}
|
|
}
|
|
|
|
static void font_renderer_free_output(void *data, struct font_output_list *output)
|
|
{
|
|
(void)data;
|
|
struct font_output *itr = output->head;
|
|
struct font_output *tmp = NULL;
|
|
while (itr != NULL)
|
|
{
|
|
tmp = itr;
|
|
itr = itr->next;
|
|
free(tmp);
|
|
}
|
|
output->head = NULL;
|
|
}
|
|
|
|
static void font_renderer_free(void *data)
|
|
{
|
|
font_renderer_t *handle = (font_renderer_t*)data;
|
|
free(handle->bitmap_alloc);
|
|
free(handle);
|
|
}
|
|
|
|
static const char *font_renderer_get_default_font(void)
|
|
{
|
|
return "";
|
|
}
|
|
|
|
const font_renderer_driver_t bitmap_font_renderer = {
|
|
font_renderer_init,
|
|
font_renderer_msg,
|
|
font_renderer_free_output,
|
|
font_renderer_free,
|
|
font_renderer_get_default_font,
|
|
"bitmap",
|
|
};
|