mirror/RetroArch
1
0
Fork 0
mirror of https://github.com/libretro/RetroArch synced 2025-01-31 15:32:59 +00:00
Code Issues Packages Projects Releases Wiki Activity
RetroArch/gfx/drivers_font/switch_font.c

355 lines
11 KiB
C
Raw Blame History

/* RetroArch - A frontend for libretro.
* Copyright (C) 2018 - lifajucejo
* Copyright (C) 2018 - m4xw
* Copyright (C) 2018 - natinusala
*
* 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 <stdio.h>
#include <string.h>
#include <malloc.h>
#include <math.h>
#include <encodings/utf.h>
#include <retro_math.h>
#include "../font_driver.h"
#include "../video_driver.h"
#include "../../verbosity.h"
#include "../common/switch_common.h"
typedef struct
{
struct font_atlas *atlas;
const font_renderer_driver_t *font_driver;
void *font_data;
} switch_font_t;
static void *switch_font_init_font(void *data, const char *font_path,
float font_size, bool is_threaded)
{
switch_font_t *font = (switch_font_t *)calloc(1, sizeof(switch_font_t));
if (!font)
return NULL;
if (!font_renderer_create_default((const void **)&font->font_driver,
&font->font_data, font_path, font_size))
{
RARCH_WARN("Couldn't initialize font renderer.\n");
free(font);
return NULL;
}
font->atlas = font->font_driver->get_atlas(font->font_data);
RARCH_LOG("Switch font driver initialized with backend %s\n", font->font_driver->ident);
return font;
}
static void switch_font_free_font(void *data, bool is_threaded)
{
switch_font_t *font = (switch_font_t *)data;
if (!font)
return;
if (font->font_driver && font->font_data)
font->font_driver->free(font->font_data);
free(font);
}
static int switch_font_get_message_width(void *data, const char *msg,
unsigned msg_len, float scale)
{
switch_font_t *font = (switch_font_t *)data;
unsigned i;
int delta_x = 0;
if (!font)
return 0;
for (i = 0; i < msg_len; i++)
{
const char *msg_tmp = &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
const struct font_glyph *glyph =
font->font_driver->get_glyph(font->font_data, code);
if (!glyph) /* Do something smarter here ... */
glyph = font->font_driver->get_glyph(font->font_data, '?');
if (!glyph)
continue;
delta_x += glyph->advance_x;
}
return delta_x * scale;
}
static void switch_font_render_line(
video_frame_info_t *video_info,
switch_font_t *font, const char *msg, unsigned msg_len,
float scale, const unsigned int color, float pos_x,
float pos_y, unsigned text_align)
{
switch_video_t* sw = (switch_video_t*)video_info->userdata;
if(!sw)
return;
int delta_x = 0;
int delta_y = 0;
unsigned fbWidth = sw->vp.full_width;
unsigned fbHeight = sw->vp.full_height;
if (sw->out_buffer) {
int x = roundf(pos_x * fbWidth);
int y = roundf((1.0f - pos_y) * fbHeight);
switch (text_align)
{
case TEXT_ALIGN_RIGHT:
x -= switch_font_get_message_width(font, msg, msg_len, scale);
break;
case TEXT_ALIGN_CENTER:
x -= switch_font_get_message_width(font, msg, msg_len, scale) / 2;
break;
}
for (int i = 0; i < msg_len; i++)
{
int off_x, off_y, tex_x, tex_y, width, height;
const char *msg_tmp = &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
const struct font_glyph *glyph =
font->font_driver->get_glyph(font->font_data, code);
if (!glyph) /* Do something smarter here ... */
glyph = font->font_driver->get_glyph(font->font_data, '?');
if (!glyph)
continue;
off_x = x + glyph->draw_offset_x + delta_x;
off_y = y + glyph->draw_offset_y + delta_y;
width = glyph->width;
height = glyph->height;
tex_x = glyph->atlas_offset_x;
tex_y = glyph->atlas_offset_y;
for (int y = tex_y; y < tex_y + height; y++)
{
uint8_t *row = &font->atlas->buffer[y * font->atlas->width];
for (int x = tex_x; x < tex_x + width; x++)
{
if (!row[x])
continue;
int x1 = off_x + (x - tex_x);
int y1 = off_y + (y - tex_y);
if (x1 < fbWidth && y1 < fbHeight)
sw->out_buffer[y1 * sw->stride / sizeof(uint32_t) + x1] = color;
}
}
delta_x += glyph->advance_x;
delta_y += glyph->advance_y;
}
}
}
#define AVG_GLPYH_LIMIT 140
static void switch_font_render_message(
video_frame_info_t *video_info,
switch_font_t *font, const char *msg, float scale,
const unsigned int color, float pos_x, float pos_y,
unsigned text_align)
{
int lines = 0;
float line_height;
if (!msg || !*msg)
return;
/* If the font height is not supported just draw as usual */
if (!font->font_driver->get_line_height)
{
int msgLen = strlen(msg);
if (msgLen <= AVG_GLPYH_LIMIT)
{
switch_font_render_line(video_info, font, msg, strlen(msg),
scale, color, pos_x, pos_y, text_align);
}
return;
}
line_height = scale / font->font_driver->get_line_height(font->font_data);
for (;;)
{
const char *delim = strchr(msg, '\n');
/* Draw the line */
if (delim)
{
unsigned msg_len = delim - msg;
if (msg_len <= AVG_GLPYH_LIMIT)
{
switch_font_render_line(video_info, font, msg, msg_len,
scale, color, pos_x, pos_y - (float)lines * line_height,
text_align);
}
msg += msg_len + 1;
lines++;
}
else
{
unsigned msg_len = strlen(msg);
if (msg_len <= AVG_GLPYH_LIMIT)
{
switch_font_render_line(video_info, font, msg, msg_len,
scale, color, pos_x, pos_y - (float)lines * line_height,
text_align);
}
break;
}
}
}
static void switch_font_render_msg(
video_frame_info_t *video_info,
void *data, const char *msg,
const struct font_params *params)
{
float x, y, scale, drop_mod, drop_alpha;
int drop_x, drop_y;
unsigned max_glyphs;
enum text_alignment text_align;
unsigned color, color_dark, r, g, b,
alpha, r_dark, g_dark, b_dark, alpha_dark;
switch_font_t *font = (switch_font_t *)data;
unsigned width = video_info->width;
unsigned height = video_info->height;
if (!font || !msg || msg && !*msg)
return;
if (params)
{
x = params->x;
y = params->y;
scale = params->scale;
text_align = params->text_align;
drop_x = params->drop_x;
drop_y = params->drop_y;
drop_mod = params->drop_mod;
drop_alpha = params->drop_alpha;
r = FONT_COLOR_GET_RED(params->color);
g = FONT_COLOR_GET_GREEN(params->color);
b = FONT_COLOR_GET_BLUE(params->color);
alpha = FONT_COLOR_GET_ALPHA(params->color);
color = params->color;
}
else
{
x = 0.0f;
y = 0.0f;
scale = 1.0f;
text_align = TEXT_ALIGN_LEFT;
r = (video_info->font_msg_color_r * 255);
g = (video_info->font_msg_color_g * 255);
b = (video_info->font_msg_color_b * 255);
alpha = 255;
color = COLOR_ABGR(r, g, b, alpha);
drop_x = -2;
drop_y = -2;
drop_mod = 0.3f;
drop_alpha = 1.0f;
}
max_glyphs = strlen(msg);
/*if (drop_x || drop_y)
max_glyphs *= 2;
if (drop_x || drop_y)
{
r_dark = r * drop_mod;
g_dark = g * drop_mod;
b_dark = b * drop_mod;
alpha_dark = alpha * drop_alpha;
color_dark = COLOR_ABGR(r_dark, g_dark, b_dark, alpha_dark);
switch_font_render_message(video_info, font, msg, scale, color_dark,
x + scale * drop_x / width, y +
scale * drop_y / height, text_align);
}*/
switch_font_render_message(video_info, font, msg, scale,
color, x, y, text_align);
}
static const struct font_glyph *switch_font_get_glyph(
void *data, uint32_t code)
{
switch_font_t *font = (switch_font_t *)data;
if (!font || !font->font_driver)
return NULL;
if (!font->font_driver->ident)
return NULL;
return font->font_driver->get_glyph((void *)font->font_driver, code);
}
static void switch_font_bind_block(void *data, void *userdata)
{
(void)data;
}
font_renderer_t switch_font =
{
switch_font_init_font,
switch_font_free_font,
switch_font_render_msg,
"switchfont",
switch_font_get_glyph,
switch_font_bind_block,
NULL, /* flush_block */
switch_font_get_message_width,
};
Reference in New Issue View Git Blame Copy Permalink