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78fef6422b
RetroArch/gfx/font_driver.c
twinaphex 78fef6422b Create font_driver_get_message_width
2015-12-05 12:17:58 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* 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 "font_driver.h"
#include "video_thread_wrapper.h"
#include "../general.h"
#include "../verbosity.h"
static const font_renderer_driver_t *font_backends[] = {
#ifdef HAVE_FREETYPE
&freetype_font_renderer,
#endif
#if defined(__APPLE__) && defined(HAVE_CORETEXT)
&coretext_font_renderer,
#endif
#ifdef HAVE_STB_FONT
&stb_font_renderer,
#endif
&bitmap_font_renderer,
NULL
};
int font_renderer_get_message_width(const char *msg, float scale)
{
driver_t *driver = driver_get_ptr();
const struct font_renderer *font_driver = driver ? driver->font_osd_driver : NULL;
if (!font_driver || !font_driver->get_message_width)
return 0;
return font_driver->get_message_width(driver->font_osd_data, msg, strlen(msg), scale);
}
int font_renderer_create_default(const void **data, void **handle,
const char *font_path, unsigned font_size)
{
unsigned i;
const font_renderer_driver_t **drv = (const font_renderer_driver_t**)data;
for (i = 0; font_backends[i]; i++)
{
const char *path = font_path;
if (!path)
path = font_backends[i]->get_default_font();
if (!path)
continue;
*handle = font_backends[i]->init(path, font_size);
if (*handle)
{
RARCH_LOG("Using font rendering backend: %s.\n",
font_backends[i]->ident);
*drv = font_backends[i];
return 1;
}
else
RARCH_ERR("Failed to create rendering backend: %s.\n",
font_backends[i]->ident);
}
*drv = NULL;
*handle = NULL;
return 0;
}
#ifdef HAVE_D3D
static const font_renderer_t *d3d_font_backends[] = {
#if defined(_XBOX1)
&d3d_xdk1_font,
#elif defined(_XBOX360)
&d3d_xbox360_font,
#elif defined(_WIN32)
&d3d_win32_font,
#endif
};
static bool d3d_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE(d3d_font_backends); i++)
{
void *data = d3d_font_backends[i]->init(video_data, font_path, font_size);
if (!data)
continue;
*font_driver = d3d_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
#ifdef HAVE_OPENGL
static const font_renderer_t *gl_font_backends[] = {
&gl_raster_font,
#if defined(HAVE_LIBDBGFONT)
&libdbg_font,
#endif
NULL,
};
static bool gl_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; gl_font_backends[i]; i++)
{
void *data = gl_font_backends[i]->init(video_data, font_path, font_size);
if (!data)
continue;
*font_driver = gl_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
#ifdef HAVE_VITA2D
static const font_renderer_t *vita2d_font_backends[] = {
&vita2d_vita_font
};
static bool vita2d_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; vita2d_font_backends[i]; i++)
{
void *data = vita2d_font_backends[i]->init(video_data, font_path, font_size);
if (!data)
continue;
*font_driver = vita2d_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
bool font_init_first(const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size,
enum font_driver_render_api api)
{
if (font_path && !font_path[0])
font_path = NULL;
switch (api)
{
#ifdef HAVE_D3D
case FONT_DRIVER_RENDER_DIRECT3D_API:
return d3d_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
#ifdef HAVE_OPENGL
case FONT_DRIVER_RENDER_OPENGL_API:
return gl_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
#ifdef HAVE_VITA2D
case FONT_DRIVER_RENDER_VITA2D:
return vita2d_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
case FONT_DRIVER_RENDER_DONT_CARE:
/* TODO/FIXME - lookup graphics driver's 'API' */
break;
default:
break;
}
return false;
}
bool font_driver_has_render_msg(void)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = driver->font_osd_driver;
if (!font_ctx || !font_ctx->render_msg)
return false;
return true;
}
void font_driver_render_msg(void *font_data, const char *msg, const struct font_params *params)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = driver->font_osd_driver;
if (font_ctx->render_msg)
font_ctx->render_msg(font_data ? font_data : driver->font_osd_data, msg, params);
}
void font_driver_bind_block(void *font_data, void *block)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = driver->font_osd_driver;
void *new_font_data = font_data ? font_data : driver->font_osd_data;
if (font_ctx->bind_block)
font_ctx->bind_block(new_font_data, block);
}
void font_driver_flush(void *data)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = driver->font_osd_driver;
if (font_ctx->flush)
font_ctx->flush(data);
}
int font_driver_get_message_width(void *data, const char *msg, unsigned len, float scale)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = driver->font_osd_driver;
if (!font_ctx || !font_ctx->get_message_width)
return -1;
return font_ctx->get_message_width(data, msg, len, scale);
}
void font_driver_free(void *data)
{
driver_t *driver = driver_get_ptr();
const font_renderer_t *font_ctx = (const font_renderer_t*)driver->font_osd_driver;
if (font_ctx->free)
font_ctx->free(data ? data : driver->font_osd_data);
if (data)
return;
driver->font_osd_data = NULL;
driver->font_osd_driver = NULL;
}
bool font_driver_init_first(const void **font_driver, void *font_handle,
void *data, const char *font_path, float font_size,
bool threading_hint,
enum font_driver_render_api api)
{
settings_t *settings = config_get_ptr();
const struct retro_hw_render_callback *hw_render =
(const struct retro_hw_render_callback*)video_driver_callback();
driver_t *driver = driver_get_ptr();
const void **new_font_driver = font_driver ? font_driver
: (const void**)&driver->font_osd_driver;
void *new_font_handle = font_handle ? font_handle
: &driver->font_osd_data;
if (threading_hint && settings->video.threaded && !hw_render->context_type)
{
thread_packet_t pkt;
thread_video_t *thr = (thread_video_t*)video_driver_get_ptr(true);
if (!thr)
return false;
pkt.type = CMD_FONT_INIT;
pkt.data.font_init.method = font_init_first;
pkt.data.font_init.font_driver = new_font_driver;
pkt.data.font_init.font_handle = new_font_handle;
pkt.data.font_init.video_data = data;
pkt.data.font_init.font_path = font_path;
pkt.data.font_init.font_size = font_size;
pkt.data.font_init.api = api;
thr->send_and_wait(thr, &pkt);
return pkt.data.font_init.return_value;
}
return font_init_first(new_font_driver, new_font_handle,
data, font_path, font_size, api);
}
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