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RetroArch/menu/drivers/rgui.c
twinaphex 5ba74302b2 Cleanups
2016-06-28 11:04:59 +02:00

916 lines
24 KiB
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
* Copyright (C) 2012-2015 - Michael Lelli
*
* 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 <stdlib.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#include <string/stdstring.h>
#include <lists/string_list.h>
#include <compat/posix_string.h>
#include <encodings/utf.h>
#include <file/file_path.h>
#include <retro_inline.h>
#include <string/stdstring.h>
#include "menu_generic.h"
#include "../../general.h"
#include "../menu_driver.h"
#include "../menu_animation.h"
#include "../menu_display.h"
#include "../menu_navigation.h"
#include "../../gfx/drivers_font_renderer/bitmap.h"
#define RGUI_TERM_START_X(width) (width / 21)
#define RGUI_TERM_START_Y(height) (height / 9)
#define RGUI_TERM_WIDTH(width) (((width - RGUI_TERM_START_X(width) - RGUI_TERM_START_X(width)) / (FONT_WIDTH_STRIDE)))
#define RGUI_TERM_HEIGHT(width, height) (((height - RGUI_TERM_START_Y(height) - RGUI_TERM_START_X(width)) / (FONT_HEIGHT_STRIDE)) - 1)
typedef struct
{
bool force_redraw;
char msgbox[4096];
unsigned last_width;
unsigned last_height;
float scroll_y;
} rgui_t;
static uint16_t *rgui_framebuf_data = NULL;
#if defined(GEKKO)|| defined(PSP)
#define HOVER_COLOR(settings) ((3 << 0) | (10 << 4) | (3 << 8) | (7 << 12))
#define NORMAL_COLOR(settings) 0x7FFF
#define TITLE_COLOR(settings) HOVER_COLOR(settings)
#else
#define HOVER_COLOR(settings) (argb32_to_rgba4444(settings->menu.entry_hover_color))
#define NORMAL_COLOR(settings) (argb32_to_rgba4444(settings->menu.entry_normal_color))
#define TITLE_COLOR(settings) (argb32_to_rgba4444(settings->menu.title_color))
static uint16_t argb32_to_rgba4444(uint32_t col)
{
unsigned a = ((col >> 24) & 0xff) >> 4;
unsigned r = ((col >> 16) & 0xff) >> 4;
unsigned g = ((col >> 8) & 0xff) >> 4;
unsigned b = (col & 0xff) >> 4;
return (r << 12) | (g << 8) | (b << 4) | a;
}
#endif
static void rgui_copy_glyph(uint8_t *glyph, const uint8_t *buf)
{
int x, y;
if (!glyph)
return;
for (y = 0; y < FONT_HEIGHT; y++)
{
for (x = 0; x < FONT_WIDTH; x++)
{
uint32_t col =
((uint32_t)buf[3 * (-y * 256 + x) + 0] << 0) |
((uint32_t)buf[3 * (-y * 256 + x) + 1] << 8) |
((uint32_t)buf[3 * (-y * 256 + x) + 2] << 16);
uint8_t rem = 1 << ((x + y * FONT_WIDTH) & 7);
unsigned offset = (x + y * FONT_WIDTH) >> 3;
if (col != 0xff)
glyph[offset] |= rem;
}
}
}
static uint16_t rgui_gray_filler(unsigned x, unsigned y)
{
unsigned col;
x >>= 1;
y >>= 1;
col = ((x + y) & 1) + 1;
#if defined(GEKKO) || defined(PSP)
return (6 << 12) | (col << 8) | (col << 4) | (col << 0);
#else
return (col << 13) | (col << 9) | (col << 5) | (12 << 0);
#endif
}
static uint16_t rgui_green_filler(unsigned x, unsigned y)
{
unsigned col;
x >>= 1;
y >>= 1;
col = ((x + y) & 1) + 1;
#if defined(GEKKO) || defined(PSP)
return (6 << 12) | (col << 8) | (col << 5) | (col << 0);
#else
return (col << 13) | (col << 10) | (col << 5) | (12 << 0);
#endif
}
static void rgui_fill_rect(size_t pitch,
unsigned x, unsigned y,
unsigned width, unsigned height,
uint16_t (*col)(unsigned x, unsigned y))
{
unsigned i, j;
uint16_t *data = (uint16_t*)rgui_framebuf_data;
if (!data || !col)
return;
for (j = y; j < y + height; j++)
for (i = x; i < x + width; i++)
data[j * (pitch >> 1) + i] = col(i, j);
}
static void rgui_color_rect(
size_t pitch,
unsigned fb_width, unsigned fb_height,
unsigned x, unsigned y,
unsigned width, unsigned height,
uint16_t color)
{
unsigned i, j;
uint16_t *data = (uint16_t*)rgui_framebuf_data;
if (!data)
return;
for (j = y; j < y + height; j++)
for (i = x; i < x + width; i++)
if (i < fb_width && j < fb_height)
data[j * (pitch >> 1) + i] = color;
}
static uint8_t string_walkbyte(const char **string)
{
return *((*string)++);
}
#ifdef HAVE_UTF8
/* Does not validate the input, returns garbage if it's not UTF-8. */
static uint32_t string_walk(const char **string)
{
uint8_t first = string_walkbyte(string);
uint32_t ret;
if (first<128)
return first;
ret = 0;
ret = (ret<<6) | (string_walkbyte(string) & 0x3F);
if (first >= 0xE0)
ret = (ret<<6) | (string_walkbyte(string) & 0x3F);
if (first >= 0xF0)
ret = (ret<<6) | (string_walkbyte(string) & 0x3F);
if (first >= 0xF0)
return ret | (first&31)<<18;
if (first >= 0xE0)
return ret | (first&15)<<12;
return ret | (first&7)<<6;
}
#else
#define string_walk string_walkbyte
#endif
static void blit_line(int x, int y,
const char *message, uint16_t color)
{
unsigned i, j;
size_t pitch = menu_display_get_framebuffer_pitch();
if (!rgui_framebuf_data)
return;
while (!string_is_empty(message))
{
const uint8_t *font_fb = menu_display_get_font_framebuffer();
uint32_t symbol = string_walk(&message);
for (j = 0; j < FONT_HEIGHT; j++)
{
for (i = 0; i < FONT_WIDTH; i++)
{
uint8_t rem = 1 << ((i + j * FONT_WIDTH) & 7);
int offset = (i + j * FONT_WIDTH) >> 3;
bool col = (font_fb[FONT_OFFSET(symbol) + offset] & rem);
if (!col)
continue;
rgui_framebuf_data[(y + j) * (pitch >> 1) + (x + i)] = color;
}
}
x += FONT_WIDTH_STRIDE;
}
}
static bool init_font(menu_handle_t *menu, const uint8_t *font_bmp_buf)
{
unsigned i;
bool fb_font_inited = true;
uint8_t *font = (uint8_t *)calloc(1, FONT_OFFSET(256));
if (!font)
return false;
menu_display_set_font_data_init(fb_font_inited);
for (i = 0; i < 256; i++)
{
unsigned y = i / 16;
unsigned x = i % 16;
rgui_copy_glyph(&font[FONT_OFFSET(i)],
font_bmp_buf + 54 + 3 * (256 * (255 - 16 * y) + 16 * x));
}
menu_display_set_font_framebuffer(font);
return true;
}
static bool rguidisp_init_font(menu_handle_t *menu)
{
const uint8_t *font_bmp_buf = NULL;
const uint8_t *font_bin_buf = bitmap_bin;
if (!menu)
return false;
if (font_bmp_buf)
return init_font(menu, font_bmp_buf);
if (!font_bin_buf)
return false;
menu_display_set_font_framebuffer(font_bin_buf);
return true;
}
static void rgui_render_background(void)
{
size_t pitch_in_pixels, size, fb_pitch;
unsigned fb_width, fb_height;
uint16_t *src = NULL;
uint16_t *dst = NULL;
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
fb_pitch = menu_display_get_framebuffer_pitch();
pitch_in_pixels = fb_pitch >> 1;
size = fb_pitch * 4;
src = rgui_framebuf_data + pitch_in_pixels * fb_height;
dst = rgui_framebuf_data;
while (dst < src)
{
memcpy(dst, src, size);
dst += pitch_in_pixels * 4;
}
rgui_fill_rect(fb_pitch, 5, 5, fb_width - 10, 5, rgui_green_filler);
rgui_fill_rect(fb_pitch, 5, fb_height - 10, fb_width - 10, 5, rgui_green_filler);
rgui_fill_rect(fb_pitch, 5, 5, 5, fb_height - 10, rgui_green_filler);
rgui_fill_rect(fb_pitch, fb_width - 10, 5, 5, fb_height - 10,
rgui_green_filler);
}
static void rgui_set_message(void *data, const char *message)
{
rgui_t *rgui = (rgui_t*)data;
if (!rgui || !message || !*message)
return;
strlcpy(rgui->msgbox, message, sizeof(rgui->msgbox));
rgui->force_redraw = true;
}
static void rgui_render_messagebox(const char *message)
{
size_t i, fb_pitch;
int x, y;
unsigned fb_width, fb_height;
unsigned width, glyphs_width, height;
uint16_t color;
struct string_list *list = NULL;
settings_t *settings = config_get_ptr();
if (!message || !*message)
return;
(void)settings;
list = string_split(message, "\n");
if (!list)
return;
if (list->elems == 0)
goto end;
width = 0;
glyphs_width = 0;
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
fb_pitch = menu_display_get_framebuffer_pitch();
for (i = 0; i < list->size; i++)
{
unsigned line_width;
char *msg = list->elems[i].data;
unsigned msglen = strlen(msg);
if (msglen > RGUI_TERM_WIDTH(fb_width))
{
msg[RGUI_TERM_WIDTH(fb_width) - 2] = '.';
msg[RGUI_TERM_WIDTH(fb_width) - 1] = '.';
msg[RGUI_TERM_WIDTH(fb_width) - 0] = '.';
msg[RGUI_TERM_WIDTH(fb_width) + 1] = '\0';
msglen = RGUI_TERM_WIDTH(fb_width);
}
line_width = msglen * FONT_WIDTH_STRIDE - 1 + 6 + 10;
width = MAX(width, line_width);
glyphs_width = MAX(glyphs_width, msglen);
}
height = FONT_HEIGHT_STRIDE * list->size + 6 + 10;
x = (fb_width - width) / 2;
y = (fb_height - height) / 2;
rgui_fill_rect(fb_pitch, x + 5, y + 5, width - 10,
height - 10, rgui_gray_filler);
rgui_fill_rect(fb_pitch, x, y, width - 5, 5, rgui_green_filler);
rgui_fill_rect(fb_pitch, x + width - 5, y, 5,
height - 5, rgui_green_filler);
rgui_fill_rect(fb_pitch, x + 5, y + height - 5,
width - 5, 5, rgui_green_filler);
rgui_fill_rect(fb_pitch, x, y + 5, 5,
height - 5, rgui_green_filler);
color = NORMAL_COLOR(settings);
for (i = 0; i < list->size; i++)
{
const char *msg = list->elems[i].data;
int offset_x = FONT_WIDTH_STRIDE * (glyphs_width - strlen(msg)) / 2;
int offset_y = FONT_HEIGHT_STRIDE * i;
blit_line(x + 8 + offset_x, y + 8 + offset_y, msg, color);
}
end:
string_list_free(list);
}
static void rgui_blit_cursor(void)
{
size_t fb_pitch;
unsigned fb_width, fb_height;
int16_t x = menu_input_mouse_state(MENU_MOUSE_X_AXIS);
int16_t y = menu_input_mouse_state(MENU_MOUSE_Y_AXIS);
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
fb_pitch = menu_display_get_framebuffer_pitch();
rgui_color_rect(fb_pitch, fb_width, fb_height, x, y - 5, 1, 11, 0xFFFF);
rgui_color_rect(fb_pitch, fb_width, fb_height, x - 5, y, 11, 1, 0xFFFF);
}
static void rgui_render(void *data)
{
menu_animation_ctx_ticker_t ticker;
unsigned x, y;
bool display_kb, msg_force;
uint16_t hover_color, normal_color;
size_t i, end, fb_pitch, old_start;
unsigned fb_width, fb_height;
int bottom;
uint64_t *frame_count = NULL;
char title[256] = {0};
char title_buf[256] = {0};
char title_msg[64] = {0};
char msg[PATH_MAX_LENGTH] = {0};
settings_t *settings = config_get_ptr();
rgui_t *rgui = (rgui_t*)data;
frame_count = video_driver_get_frame_count_ptr();
msg[0] = '\0';
title[0] = '\0';
title_buf[0] = '\0';
title_msg[0] = '\0';
if (!rgui)
return;
if (!rgui->force_redraw)
{
msg_force = menu_display_get_msg_force();
if (menu_entries_ctl(MENU_ENTRIES_CTL_NEEDS_REFRESH, NULL)
&& menu_driver_ctl(RARCH_MENU_CTL_IS_ALIVE, NULL) && !msg_force)
return;
if (runloop_ctl(RUNLOOP_CTL_IS_IDLE, NULL))
return;
if (!menu_display_get_update_pending())
return;
}
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
fb_pitch = menu_display_get_framebuffer_pitch();
/* if the framebuffer changed size, recache the background */
if (rgui->last_width != fb_width || rgui->last_height != fb_height)
{
rgui_fill_rect(fb_pitch, 0, fb_height, fb_width, 4, rgui_gray_filler);
rgui->last_width = fb_width;
rgui->last_height = fb_height;
}
menu_display_set_framebuffer_dirty_flag();
menu_animation_ctl(MENU_ANIMATION_CTL_CLEAR_ACTIVE, NULL);
rgui->force_redraw = false;
if (settings->menu.pointer.enable)
{
unsigned new_val;
menu_entries_ctl(MENU_ENTRIES_CTL_START_GET, &old_start);
new_val = menu_input_pointer_state(MENU_POINTER_Y_AXIS)
/ 11 - 2 + old_start;
menu_input_ctl(MENU_INPUT_CTL_POINTER_PTR, &new_val);
if (menu_input_ctl(MENU_INPUT_CTL_IS_POINTER_DRAGGED, NULL))
{
size_t start;
int16_t delta_y = menu_input_pointer_state(MENU_POINTER_DELTA_Y_AXIS);
rgui->scroll_y += delta_y;
start = -rgui->scroll_y / 11 + 2;
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &start);
if (rgui->scroll_y > 0)
rgui->scroll_y = 0;
}
}
if (settings->menu.mouse.enable)
{
unsigned new_mouse_ptr;
int16_t mouse_y = menu_input_mouse_state(MENU_MOUSE_Y_AXIS);
menu_entries_ctl(MENU_ENTRIES_CTL_START_GET, &old_start);
new_mouse_ptr = mouse_y / 11 - 2 + old_start;
menu_input_ctl(MENU_INPUT_CTL_MOUSE_PTR, &new_mouse_ptr);
}
/* Do not scroll if all items are visible. */
if (menu_entries_get_end() <= RGUI_TERM_HEIGHT(fb_width, fb_height))
{
size_t start = 0;
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &start);
}
bottom = menu_entries_get_end() - RGUI_TERM_HEIGHT(fb_width, fb_height);
menu_entries_ctl(MENU_ENTRIES_CTL_START_GET, &old_start);
if (old_start > (unsigned)bottom)
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &bottom);
menu_entries_ctl(MENU_ENTRIES_CTL_START_GET, &old_start);
end = ((old_start + RGUI_TERM_HEIGHT(fb_width, fb_height)) <= (menu_entries_get_end())) ?
old_start + RGUI_TERM_HEIGHT(fb_width, fb_height) : menu_entries_get_end();
rgui_render_background();
#if 0
RARCH_LOG("Dir is: %s\n", label);
#endif
menu_entries_get_title(title, sizeof(title));
ticker.s = title_buf;
ticker.len = RGUI_TERM_WIDTH(fb_width) - 10;
ticker.idx = *frame_count / RGUI_TERM_START_X(fb_width);
ticker.str = title;
ticker.selected = true;
menu_animation_ctl(MENU_ANIMATION_CTL_TICKER, &ticker);
hover_color = HOVER_COLOR(settings);
normal_color = NORMAL_COLOR(settings);
if (menu_entries_ctl(MENU_ENTRIES_CTL_SHOW_BACK, NULL))
blit_line(
RGUI_TERM_START_X(fb_width),
RGUI_TERM_START_X(fb_width),
msg_hash_to_str(MENU_ENUM_LABEL_VALUE_BACK),
TITLE_COLOR(settings));
strlcpy(title_buf, string_to_upper(title_buf), sizeof(title_buf));
blit_line(
RGUI_TERM_START_X(fb_width) + (RGUI_TERM_WIDTH(fb_width)
- strlen(title_buf)) * FONT_WIDTH_STRIDE / 2,
RGUI_TERM_START_X(fb_width),
title_buf, TITLE_COLOR(settings));
if (menu_entries_get_core_title(title_msg, sizeof(title_msg)) == 0)
blit_line(
RGUI_TERM_START_X(fb_width),
(RGUI_TERM_HEIGHT(fb_width, fb_height) * FONT_HEIGHT_STRIDE) +
RGUI_TERM_START_Y(fb_height) + 2, title_msg, hover_color);
if (settings->menu.timedate_enable)
{
menu_display_ctx_datetime_t datetime;
char timedate[PATH_MAX_LENGTH] = {0};
datetime.s = timedate;
datetime.len = sizeof(timedate);
datetime.time_mode = 3;
menu_display_timedate(&datetime);
blit_line(
RGUI_TERM_WIDTH(fb_width) * FONT_WIDTH_STRIDE - RGUI_TERM_START_X(fb_width),
(RGUI_TERM_HEIGHT(fb_width, fb_height) * FONT_HEIGHT_STRIDE) +
RGUI_TERM_START_Y(fb_height) + 2, timedate, hover_color);
}
x = RGUI_TERM_START_X(fb_width);
y = RGUI_TERM_START_Y(fb_height);
menu_entries_ctl(MENU_ENTRIES_CTL_START_GET, &i);
for (; i < end; i++, y += FONT_HEIGHT_STRIDE)
{
menu_animation_ctx_ticker_t ticker;
size_t selection;
char entry_path[PATH_MAX_LENGTH] = {0};
char entry_value[PATH_MAX_LENGTH] = {0};
char message[PATH_MAX_LENGTH] = {0};
char entry_title_buf[PATH_MAX_LENGTH] = {0};
char type_str_buf[PATH_MAX_LENGTH] = {0};
unsigned entry_spacing = menu_entry_get_spacing(i);
bool entry_selected = menu_entry_is_currently_selected(i);
if (!menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION, &selection))
continue;
if (i > (selection + 100))
continue;
entry_path[0] = '\0';
entry_value[0] = '\0';
message[0] = '\0';
entry_title_buf[0] = '\0';
type_str_buf[0] = '\0';
menu_entry_get_value(i, entry_value, sizeof(entry_value));
menu_entry_get_path(i, entry_path, sizeof(entry_path));
ticker.s = entry_title_buf;
ticker.len = RGUI_TERM_WIDTH(fb_width) - (entry_spacing + 1 + 2);
ticker.idx = *frame_count / RGUI_TERM_START_X(fb_width);
ticker.str = entry_path;
ticker.selected = entry_selected;
menu_animation_ctl(MENU_ANIMATION_CTL_TICKER, &ticker);
ticker.s = type_str_buf;
ticker.len = entry_spacing;
ticker.str = entry_value;
menu_animation_ctl(MENU_ANIMATION_CTL_TICKER, &ticker);
snprintf(message, sizeof(message), "%c %-*.*s %-*s",
entry_selected ? '>' : ' ',
(int)(RGUI_TERM_WIDTH(fb_width) - (entry_spacing + 1 + 2) - utf8len(entry_title_buf) + strlen(entry_title_buf)),
(int)(RGUI_TERM_WIDTH(fb_width) - (entry_spacing + 1 + 2) - utf8len(entry_title_buf) + strlen(entry_title_buf)),
entry_title_buf,
entry_spacing,
type_str_buf);
blit_line(x, y, message,
entry_selected ? hover_color : normal_color);
}
menu_input_ctl(MENU_INPUT_CTL_KEYBOARD_DISPLAY, &display_kb);
if (display_kb)
{
const char *str = NULL;
const char *label = NULL;
menu_input_ctl(MENU_INPUT_CTL_KEYBOARD_BUFF_PTR, &str);
menu_input_ctl(MENU_INPUT_CTL_KEYBOARD_LABEL, &label);
if (!str)
str = "";
snprintf(msg, sizeof(msg), "%s\n%s", label, str);
rgui_render_messagebox(msg);
}
if (!string_is_empty(rgui->msgbox))
{
rgui_render_messagebox(rgui->msgbox);
rgui->msgbox[0] = '\0';
rgui->force_redraw = true;
}
if (settings->menu.mouse.enable
&& (settings->video.fullscreen
|| !video_driver_has_windowed())
)
rgui_blit_cursor();
}
static void rgui_framebuffer_free(void)
{
if (rgui_framebuf_data)
free(rgui_framebuf_data);
rgui_framebuf_data = NULL;
}
static void *rgui_init(void **userdata)
{
size_t fb_pitch, start;
unsigned fb_width, fb_height, new_font_height;
rgui_t *rgui = NULL;
bool ret = false;
menu_handle_t *menu = (menu_handle_t*)calloc(1, sizeof(*menu));
if (!menu)
return NULL;
rgui = (rgui_t*)calloc(1, sizeof(rgui_t));
if (!rgui)
goto error;
*userdata = rgui;
/* 4 extra lines to cache the checked background */
rgui_framebuf_data = (uint16_t*)
calloc(400 * (240 + 4), sizeof(uint16_t));
if (!rgui_framebuf_data)
goto error;
fb_width = 320;
fb_height = 240;
fb_pitch = fb_width * sizeof(uint16_t);
new_font_height = FONT_HEIGHT_STRIDE * 2;
menu_display_set_width(fb_width);
menu_display_set_height(fb_height);
menu_display_set_header_height(new_font_height);
menu_display_set_framebuffer_pitch(fb_pitch);
start = 0;
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &start);
ret = rguidisp_init_font(menu);
if (!ret)
goto error;
rgui_fill_rect(fb_pitch, 0, fb_height,
fb_width, 4, rgui_gray_filler);
rgui->last_width = fb_width;
rgui->last_height = fb_height;
return menu;
error:
rgui_framebuffer_free();
if (menu)
free(menu);
return NULL;
}
static void rgui_free(void *data)
{
const uint8_t *font_fb;
bool fb_font_inited = false;
fb_font_inited = menu_display_get_font_data_init();
font_fb = menu_display_get_font_framebuffer();
if (fb_font_inited)
free((void*)font_fb);
fb_font_inited = false;
menu_display_set_font_data_init(fb_font_inited);
}
static void rgui_set_texture(void)
{
unsigned fb_width, fb_height;
if (!menu_display_get_framebuffer_dirty_flag())
return;
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
menu_display_unset_framebuffer_dirty_flag();
video_driver_set_texture_frame(rgui_framebuf_data,
false, fb_width, fb_height, 1.0f);
}
static void rgui_navigation_clear(void *data, bool pending_push)
{
size_t start;
rgui_t *rgui = (rgui_t*)data;
if (!rgui)
return;
start = 0;
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &start);
rgui->scroll_y = 0;
}
static void rgui_navigation_set(void *data, bool scroll)
{
size_t selection, start;
unsigned fb_width, fb_height;
bool do_set_start = false;
size_t end = menu_entries_get_end();
if (!menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION, &selection))
return;
if (!scroll)
return;
fb_width = menu_display_get_width();
fb_height = menu_display_get_height();
if (selection < RGUI_TERM_HEIGHT(fb_width, fb_height) /2)
{
start = 0;
do_set_start = true;
}
else if (selection >= (RGUI_TERM_HEIGHT(fb_width, fb_height) /2)
&& selection < (end - RGUI_TERM_HEIGHT(fb_width, fb_height) /2))
{
start = selection - RGUI_TERM_HEIGHT(fb_width, fb_height) /2;
do_set_start = true;
}
else if (selection >= (end - RGUI_TERM_HEIGHT(fb_width, fb_height) /2))
{
start = end - RGUI_TERM_HEIGHT(fb_width, fb_height);
do_set_start = true;
}
if (do_set_start)
menu_entries_ctl(MENU_ENTRIES_CTL_SET_START, &start);
}
static void rgui_navigation_set_last(void *data)
{
rgui_navigation_set(data, true);
}
static void rgui_navigation_descend_alphabet(void *data, size_t *unused)
{
rgui_navigation_set(data, true);
}
static void rgui_navigation_ascend_alphabet(void *data, size_t *unused)
{
rgui_navigation_set(data, true);
}
static void rgui_populate_entries(void *data,
const char *path,
const char *label, unsigned k)
{
rgui_navigation_set(data, true);
}
static int rgui_environ(enum menu_environ_cb type,
void *data, void *userdata)
{
switch (type)
{
case 0:
break;
default:
return -1;
}
return 0;
}
static int rgui_pointer_tap(void *data,
unsigned x, unsigned y,
unsigned ptr, menu_file_list_cbs_t *cbs,
menu_entry_t *entry, unsigned action)
{
size_t selection;
unsigned header_height = menu_display_get_header_height();
if (y < header_height)
{
menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION, &selection);
return menu_entry_action(entry, selection, MENU_ACTION_CANCEL);
}
else if (ptr <= (menu_entries_get_size() - 1))
{
size_t idx;
bool scroll = false;
menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION, &selection);
if (ptr == selection && cbs && cbs->action_select)
return menu_entry_action(entry, selection, MENU_ACTION_SELECT);
idx = ptr;
menu_navigation_ctl(MENU_NAVIGATION_CTL_SET_SELECTION, &idx);
menu_navigation_ctl(MENU_NAVIGATION_CTL_SET, &scroll);
}
return 0;
}
menu_ctx_driver_t menu_ctx_rgui = {
rgui_set_texture,
rgui_set_message,
generic_menu_iterate,
rgui_render,
NULL,
rgui_init,
rgui_free,
NULL,
NULL,
rgui_populate_entries,
NULL,
rgui_navigation_clear,
NULL,
NULL,
rgui_navigation_set,
rgui_navigation_set_last,
rgui_navigation_descend_alphabet,
rgui_navigation_ascend_alphabet,
generic_menu_init_list,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"rgui",
rgui_environ,
rgui_pointer_tap,
NULL,
NULL
};
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