SameBoy/SDL/gui.c
2022-07-02 18:11:55 +03:00

1810 lines
60 KiB
C

#include <OpenDialog/open_dialog.h>
#include <SDL.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "utils.h"
#include "gui.h"
#include "font.h"
#include "audio/audio.h"
static const SDL_Color gui_palette[4] = {{8, 24, 16,}, {57, 97, 57,}, {132, 165, 99}, {198, 222, 140}};
static uint32_t gui_palette_native[4];
SDL_Window *window = NULL;
SDL_Renderer *renderer = NULL;
SDL_Texture *texture = NULL;
SDL_PixelFormat *pixel_format = NULL;
enum pending_command pending_command;
unsigned command_parameter;
char *dropped_state_file = NULL;
#ifdef __APPLE__
#define MODIFIER_NAME " " CMD_STRING
#else
#define MODIFIER_NAME CTRL_STRING
#endif
shader_t shader;
static SDL_Rect rect;
static unsigned factor;
void render_texture(void *pixels, void *previous)
{
if (renderer) {
if (pixels) {
SDL_UpdateTexture(texture, NULL, pixels, GB_get_screen_width(&gb) * sizeof (uint32_t));
}
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
}
else {
static void *_pixels = NULL;
if (pixels) {
_pixels = pixels;
}
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
GB_frame_blending_mode_t mode = configuration.blending_mode;
if (!previous) {
mode = GB_FRAME_BLENDING_MODE_DISABLED;
}
else if (mode == GB_FRAME_BLENDING_MODE_ACCURATE) {
if (GB_is_sgb(&gb)) {
mode = GB_FRAME_BLENDING_MODE_SIMPLE;
}
else {
mode = GB_is_odd_frame(&gb)? GB_FRAME_BLENDING_MODE_ACCURATE_ODD : GB_FRAME_BLENDING_MODE_ACCURATE_EVEN;
}
}
render_bitmap_with_shader(&shader, _pixels, previous,
GB_get_screen_width(&gb), GB_get_screen_height(&gb),
rect.x, rect.y, rect.w, rect.h,
mode);
SDL_GL_SwapWindow(window);
}
}
configuration_t configuration =
{
.keys = {
SDL_SCANCODE_RIGHT,
SDL_SCANCODE_LEFT,
SDL_SCANCODE_UP,
SDL_SCANCODE_DOWN,
SDL_SCANCODE_X,
SDL_SCANCODE_Z,
SDL_SCANCODE_BACKSPACE,
SDL_SCANCODE_RETURN,
SDL_SCANCODE_SPACE
},
.keys_2 = {
SDL_SCANCODE_TAB,
SDL_SCANCODE_LSHIFT,
},
.joypad_configuration = {
13,
14,
11,
12,
0,
1,
9,
8,
10,
4,
-1,
5,
},
.joypad_axises = {
0,
1,
},
.color_correction_mode = GB_COLOR_CORRECTION_EMULATE_HARDWARE,
.highpass_mode = GB_HIGHPASS_ACCURATE,
.scaling_mode = GB_SDL_SCALING_INTEGER_FACTOR,
.blending_mode = GB_FRAME_BLENDING_MODE_ACCURATE,
.rewind_length = 60 * 2,
.model = MODEL_CGB,
.volume = 100,
.rumble_mode = GB_RUMBLE_ALL_GAMES,
.default_scale = 2,
.color_temperature = 10,
.cgb_revision = GB_MODEL_CGB_E - GB_MODEL_CGB_0,
};
static const char *help[] = {
"Drop a ROM to play.\n"
"\n"
"Keyboard Shortcuts:\n"
" Open Menu: Escape\n"
" Open ROM: " MODIFIER_NAME "+O\n"
" Reset: " MODIFIER_NAME "+R\n"
" Pause: " MODIFIER_NAME "+P\n"
" Save state: " MODIFIER_NAME "+(0-9)\n"
" Load state: " MODIFIER_NAME "+" SHIFT_STRING "+(0-9)\n"
" Toggle Fullscreen " MODIFIER_NAME "+F\n"
#ifdef __APPLE__
" Mute/Unmute: " MODIFIER_NAME "+" SHIFT_STRING "+M\n"
#else
" Mute/Unmute: " MODIFIER_NAME "+M\n"
#endif
" Break Debugger: " CTRL_STRING "+C"
};
void update_viewport(void)
{
int win_width, win_height;
SDL_GL_GetDrawableSize(window, &win_width, &win_height);
int logical_width, logical_height;
SDL_GetWindowSize(window, &logical_width, &logical_height);
factor = win_width / logical_width;
double x_factor = win_width / (double) GB_get_screen_width(&gb);
double y_factor = win_height / (double) GB_get_screen_height(&gb);
if (configuration.scaling_mode == GB_SDL_SCALING_INTEGER_FACTOR) {
x_factor = (unsigned)(x_factor);
y_factor = (unsigned)(y_factor);
}
if (configuration.scaling_mode != GB_SDL_SCALING_ENTIRE_WINDOW) {
if (x_factor > y_factor) {
x_factor = y_factor;
}
else {
y_factor = x_factor;
}
}
unsigned new_width = x_factor * GB_get_screen_width(&gb);
unsigned new_height = y_factor * GB_get_screen_height(&gb);
rect = (SDL_Rect){(win_width - new_width) / 2, (win_height - new_height) /2,
new_width, new_height};
if (renderer) {
SDL_RenderSetViewport(renderer, &rect);
}
else {
glViewport(rect.x, rect.y, rect.w, rect.h);
}
}
static void rescale_window(void)
{
SDL_SetWindowSize(window, GB_get_screen_width(&gb) * configuration.default_scale, GB_get_screen_height(&gb) * configuration.default_scale);
}
static void draw_char(uint32_t *buffer, unsigned width, unsigned height, unsigned char ch, uint32_t color, uint32_t *mask_top, uint32_t *mask_bottom)
{
if (ch < ' ' || ch > font_max) {
ch = '?';
}
uint8_t *data = &font[(ch - ' ') * GLYPH_WIDTH * GLYPH_HEIGHT];
for (unsigned y = GLYPH_HEIGHT; y--;) {
for (unsigned x = GLYPH_WIDTH; x--;) {
if (*(data++) && buffer >= mask_top && buffer < mask_bottom) {
(*buffer) = color;
}
buffer++;
}
buffer += width - GLYPH_WIDTH;
}
}
static signed scroll = 0;
static void draw_unbordered_text(uint32_t *buffer, unsigned width, unsigned height, unsigned x, signed y, const char *string, uint32_t color, bool is_osd)
{
if (!is_osd) {
y -= scroll;
}
unsigned orig_x = x;
unsigned y_offset = is_osd? 0 : (GB_get_screen_height(&gb) - 144) / 2;
while (*string) {
if (*string == '\n') {
x = orig_x;
y += GLYPH_HEIGHT + 4;
string++;
continue;
}
if (x > width - GLYPH_WIDTH) {
break;
}
draw_char(&buffer[(signed)(x + width * y)], width, height, *string, color, &buffer[width * y_offset], &buffer[width * (is_osd? GB_get_screen_height(&gb) : y_offset + 144)]);
x += GLYPH_WIDTH;
string++;
}
}
void draw_text(uint32_t *buffer, unsigned width, unsigned height, unsigned x, signed y, const char *string, uint32_t color, uint32_t border, bool is_osd)
{
draw_unbordered_text(buffer, width, height, x - 1, y, string, border, is_osd);
draw_unbordered_text(buffer, width, height, x + 1, y, string, border, is_osd);
draw_unbordered_text(buffer, width, height, x, y - 1, string, border, is_osd);
draw_unbordered_text(buffer, width, height, x, y + 1, string, border, is_osd);
draw_unbordered_text(buffer, width, height, x, y, string, color, is_osd);
}
const char *osd_text = NULL;
unsigned osd_countdown = 0;
unsigned osd_text_lines = 1;
void show_osd_text(const char *text)
{
osd_text_lines = 1;
osd_text = text;
osd_countdown = 30;
while (*text++) {
if (*text == '\n') {
osd_text_lines++;
osd_countdown += 30;
}
}
}
enum decoration {
DECORATION_NONE,
DECORATION_SELECTION,
DECORATION_ARROWS,
};
static void draw_text_centered(uint32_t *buffer, unsigned width, unsigned height, unsigned y, const char *string, uint32_t color, uint32_t border, enum decoration decoration)
{
unsigned x = width / 2 - (unsigned) strlen(string) * GLYPH_WIDTH / 2;
draw_text(buffer, width, height, x, y, string, color, border, false);
switch (decoration) {
case DECORATION_SELECTION:
draw_text(buffer, width, height, x - GLYPH_WIDTH, y, SELECTION_STRING, color, border, false);
break;
case DECORATION_ARROWS:
draw_text(buffer, width, height, x - GLYPH_WIDTH, y, LEFT_ARROW_STRING, color, border, false);
draw_text(buffer, width, height, width - x, y, RIGHT_ARROW_STRING, color, border, false);
break;
case DECORATION_NONE:
break;
}
}
struct menu_item {
const char *string;
void (*handler)(unsigned);
const char *(*value_getter)(unsigned);
void (*backwards_handler)(unsigned);
};
static const struct menu_item *current_menu = NULL;
static const struct menu_item *root_menu = NULL;
static unsigned menu_height;
static unsigned scrollbar_size;
static bool mouse_scroling = false;
static unsigned current_selection = 0;
static enum {
SHOWING_DROP_MESSAGE,
SHOWING_MENU,
SHOWING_HELP,
WAITING_FOR_KEY,
WAITING_FOR_JBUTTON,
} gui_state;
static unsigned joypad_configuration_progress = 0;
static uint8_t joypad_axis_temp;
static void item_exit(unsigned index)
{
pending_command = GB_SDL_QUIT_COMMAND;
}
static unsigned current_help_page = 0;
static void item_help(unsigned index)
{
current_help_page = 0;
gui_state = SHOWING_HELP;
}
static void enter_emulation_menu(unsigned index);
static void enter_graphics_menu(unsigned index);
static void enter_keyboard_menu(unsigned index);
static void enter_joypad_menu(unsigned index);
static void enter_audio_menu(unsigned index);
static void enter_controls_menu(unsigned index);
static void toggle_audio_recording(unsigned index);
extern void set_filename(const char *new_filename, typeof(free) *new_free_function);
static void open_rom(unsigned index)
{
char *filename = do_open_rom_dialog();
if (filename) {
set_filename(filename, free);
pending_command = GB_SDL_NEW_FILE_COMMAND;
}
}
static void recalculate_menu_height(void)
{
menu_height = 24;
scrollbar_size = 0;
if (gui_state == SHOWING_MENU) {
for (const struct menu_item *item = current_menu; item->string; item++) {
menu_height += 12;
if (item->backwards_handler) {
menu_height += 12;
}
}
}
if (menu_height > 144) {
scrollbar_size = 144 * 140 / menu_height;
}
}
char audio_recording_menu_item[] = "Start Audio Recording";
static const struct menu_item paused_menu[] = {
{"Resume", NULL},
{"Open ROM", open_rom},
{"Emulation Options", enter_emulation_menu},
{"Graphic Options", enter_graphics_menu},
{"Audio Options", enter_audio_menu},
{"Control Options", enter_controls_menu},
{audio_recording_menu_item, toggle_audio_recording},
{"Help", item_help},
{"Quit SameBoy", item_exit},
{NULL,}
};
static const struct menu_item *const nonpaused_menu = &paused_menu[1];
static void return_to_root_menu(unsigned index)
{
current_menu = root_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
static void cycle_model(unsigned index)
{
configuration.model++;
if (configuration.model == MODEL_MAX) {
configuration.model = 0;
}
pending_command = GB_SDL_RESET_COMMAND;
}
static void cycle_model_backwards(unsigned index)
{
if (configuration.model == 0) {
configuration.model = MODEL_MAX;
}
configuration.model--;
pending_command = GB_SDL_RESET_COMMAND;
}
const char *current_model_string(unsigned index)
{
return (const char *[]){"Game Boy", "Game Boy Color", "Game Boy Advance", "Super Game Boy", "Game Boy Pocket"}
[configuration.model];
}
static void cycle_cgb_revision(unsigned index)
{
configuration.cgb_revision++;
if (configuration.cgb_revision == GB_MODEL_CGB_E - GB_MODEL_CGB_0) {
configuration.cgb_revision = 0;
}
pending_command = GB_SDL_RESET_COMMAND;
}
static void cycle_cgb_revision_backwards(unsigned index)
{
if (configuration.cgb_revision == 0) {
configuration.cgb_revision = GB_MODEL_CGB_E - GB_MODEL_CGB_0;
}
configuration.cgb_revision--;
pending_command = GB_SDL_RESET_COMMAND;
}
const char *current_cgb_revision_string(unsigned index)
{
return (const char *[]){
"CPU CGB 0 (Exp.)",
"CPU CGB A (Exp.)",
"CPU CGB B (Exp.)",
"CPU CGB C (Exp.)",
"CPU CGB D",
"CPU CGB E",
}
[configuration.cgb_revision];
}
static void cycle_sgb_revision(unsigned index)
{
configuration.sgb_revision++;
if (configuration.sgb_revision == SGB_MAX) {
configuration.sgb_revision = 0;
}
pending_command = GB_SDL_RESET_COMMAND;
}
static void cycle_sgb_revision_backwards(unsigned index)
{
if (configuration.sgb_revision == 0) {
configuration.sgb_revision = SGB_MAX;
}
configuration.sgb_revision--;
pending_command = GB_SDL_RESET_COMMAND;
}
const char *current_sgb_revision_string(unsigned index)
{
return (const char *[]){"Super Game Boy NTSC", "Super Game Boy PAL", "Super Game Boy 2"}
[configuration.sgb_revision];
}
static const uint32_t rewind_lengths[] = {0, 10, 30, 60, 60 * 2, 60 * 5, 60 * 10};
static const char *rewind_strings[] = {"Disabled",
"10 Seconds",
"30 Seconds",
"1 Minute",
"2 Minutes",
"5 Minutes",
"10 Minutes",
};
static void cycle_rewind(unsigned index)
{
for (unsigned i = 0; i < sizeof(rewind_lengths) / sizeof(rewind_lengths[0]) - 1; i++) {
if (configuration.rewind_length == rewind_lengths[i]) {
configuration.rewind_length = rewind_lengths[i + 1];
GB_set_rewind_length(&gb, configuration.rewind_length);
return;
}
}
configuration.rewind_length = rewind_lengths[0];
GB_set_rewind_length(&gb, configuration.rewind_length);
}
static void cycle_rewind_backwards(unsigned index)
{
for (unsigned i = 1; i < sizeof(rewind_lengths) / sizeof(rewind_lengths[0]); i++) {
if (configuration.rewind_length == rewind_lengths[i]) {
configuration.rewind_length = rewind_lengths[i - 1];
GB_set_rewind_length(&gb, configuration.rewind_length);
return;
}
}
configuration.rewind_length = rewind_lengths[sizeof(rewind_lengths) / sizeof(rewind_lengths[0]) - 1];
GB_set_rewind_length(&gb, configuration.rewind_length);
}
const char *current_rewind_string(unsigned index)
{
for (unsigned i = 0; i < sizeof(rewind_lengths) / sizeof(rewind_lengths[0]); i++) {
if (configuration.rewind_length == rewind_lengths[i]) {
return rewind_strings[i];
}
}
return "Custom";
}
const char *current_bootrom_string(unsigned index)
{
if (!configuration.bootrom_path[0]) {
return "Built-in Boot ROMs";
}
size_t length = strlen(configuration.bootrom_path);
static char ret[24] = {0,};
if (length <= 23) {
strcpy(ret, configuration.bootrom_path);
}
else {
memcpy(ret, configuration.bootrom_path, 11);
memcpy(ret + 12, configuration.bootrom_path + length - 11, 11);
}
for (unsigned i = 0; i < 24; i++) {
if (ret[i] < 0) {
ret[i] = MOJIBAKE_STRING[0];
}
}
if (length > 23) {
ret[11] = ELLIPSIS_STRING[0];
}
return ret;
}
static void toggle_bootrom(unsigned index)
{
if (configuration.bootrom_path[0]) {
configuration.bootrom_path[0] = 0;
}
else {
char *folder = do_open_folder_dialog();
if (!folder) return;
if (strlen(folder) < sizeof(configuration.bootrom_path) - 1) {
strcpy(configuration.bootrom_path, folder);
}
free(folder);
}
}
static void toggle_rtc_mode(unsigned index)
{
configuration.rtc_mode = !configuration.rtc_mode;
}
const char *current_rtc_mode_string(unsigned index)
{
switch (configuration.rtc_mode) {
case GB_RTC_MODE_SYNC_TO_HOST: return "Sync to System Clock";
case GB_RTC_MODE_ACCURATE: return "Accurate";
}
return "";
}
static const struct menu_item emulation_menu[] = {
{"Emulated Model:", cycle_model, current_model_string, cycle_model_backwards},
{"GBC Revision:", cycle_cgb_revision, current_cgb_revision_string, cycle_cgb_revision_backwards},
{"SGB Revision:", cycle_sgb_revision, current_sgb_revision_string, cycle_sgb_revision_backwards},
{"Boot ROMs Folder:", toggle_bootrom, current_bootrom_string, toggle_bootrom},
{"Rewind Length:", cycle_rewind, current_rewind_string, cycle_rewind_backwards},
{"Real Time Clock:", toggle_rtc_mode, current_rtc_mode_string, toggle_rtc_mode},
{"Back", return_to_root_menu},
{NULL,}
};
static void enter_emulation_menu(unsigned index)
{
current_menu = emulation_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
const char *current_scaling_mode(unsigned index)
{
return (const char *[]){"Fill Entire Window", "Retain Aspect Ratio", "Retain Integer Factor"}
[configuration.scaling_mode];
}
const char *current_default_scale(unsigned index)
{
return (const char *[]){"1x", "2x", "3x", "4x", "5x", "6x", "7x", "8x"}
[configuration.default_scale - 1];
}
const char *current_color_correction_mode(unsigned index)
{
return (const char *[]){"Disabled", "Correct Color Curves", "Emulate Hardware", "Preserve Brightness", "Reduce Contrast", "Harsh Reality"}
[configuration.color_correction_mode];
}
const char *current_color_temperature(unsigned index)
{
static char ret[22];
strcpy(ret, SLIDER_STRING);
ret[configuration.color_temperature] = SELECTED_SLIDER_STRING[configuration.color_temperature];
return ret;
}
const char *current_palette(unsigned index)
{
return (const char *[]){"Greyscale", "Lime (Game Boy)", "Olive (Pocket)", "Teal (Light)"}
[configuration.dmg_palette];
}
const char *current_border_mode(unsigned index)
{
return (const char *[]){"SGB Only", "Never", "Always"}
[configuration.border_mode];
}
void cycle_scaling(unsigned index)
{
configuration.scaling_mode++;
if (configuration.scaling_mode == GB_SDL_SCALING_MAX) {
configuration.scaling_mode = 0;
}
update_viewport();
render_texture(NULL, NULL);
}
void cycle_scaling_backwards(unsigned index)
{
if (configuration.scaling_mode == 0) {
configuration.scaling_mode = GB_SDL_SCALING_MAX - 1;
}
else {
configuration.scaling_mode--;
}
update_viewport();
render_texture(NULL, NULL);
}
void cycle_default_scale(unsigned index)
{
if (configuration.default_scale == GB_SDL_DEFAULT_SCALE_MAX) {
configuration.default_scale = 1;
}
else {
configuration.default_scale++;
}
rescale_window();
update_viewport();
}
void cycle_default_scale_backwards(unsigned index)
{
if (configuration.default_scale == 1) {
configuration.default_scale = GB_SDL_DEFAULT_SCALE_MAX;
}
else {
configuration.default_scale--;
}
rescale_window();
update_viewport();
}
static void cycle_color_correction(unsigned index)
{
if (configuration.color_correction_mode == GB_COLOR_CORRECTION_LOW_CONTRAST) {
configuration.color_correction_mode = GB_COLOR_CORRECTION_DISABLED;
}
else {
configuration.color_correction_mode++;
}
}
static void cycle_color_correction_backwards(unsigned index)
{
if (configuration.color_correction_mode == GB_COLOR_CORRECTION_DISABLED) {
configuration.color_correction_mode = GB_COLOR_CORRECTION_LOW_CONTRAST;
}
else {
configuration.color_correction_mode--;
}
}
static void decrease_color_temperature(unsigned index)
{
if (configuration.color_temperature < 20) {
configuration.color_temperature++;
}
}
static void increase_color_temperature(unsigned index)
{
if (configuration.color_temperature > 0) {
configuration.color_temperature--;
}
}
static void cycle_palette(unsigned index)
{
if (configuration.dmg_palette == 3) {
configuration.dmg_palette = 0;
}
else {
configuration.dmg_palette++;
}
}
static void cycle_palette_backwards(unsigned index)
{
if (configuration.dmg_palette == 0) {
configuration.dmg_palette = 3;
}
else {
configuration.dmg_palette--;
}
}
static void cycle_border_mode(unsigned index)
{
if (configuration.border_mode == GB_BORDER_ALWAYS) {
configuration.border_mode = GB_BORDER_SGB;
}
else {
configuration.border_mode++;
}
}
static void cycle_border_mode_backwards(unsigned index)
{
if (configuration.border_mode == GB_BORDER_SGB) {
configuration.border_mode = GB_BORDER_ALWAYS;
}
else {
configuration.border_mode--;
}
}
extern bool uses_gl(void);
struct shader_name {
const char *file_name;
const char *display_name;
} shaders[] =
{
{"NearestNeighbor", "Nearest Neighbor"},
{"Bilinear", "Bilinear"},
{"SmoothBilinear", "Smooth Bilinear"},
{"MonoLCD", "Monochrome LCD"},
{"LCD", "LCD Display"},
{"CRT", "CRT Display"},
{"Scale2x", "Scale2x"},
{"Scale4x", "Scale4x"},
{"AAScale2x", "Anti-aliased Scale2x"},
{"AAScale4x", "Anti-aliased Scale4x"},
{"HQ2x", "HQ2x"},
{"OmniScale", "OmniScale"},
{"OmniScaleLegacy", "OmniScale Legacy"},
{"AAOmniScaleLegacy", "AA OmniScale Legacy"},
};
static void cycle_filter(unsigned index)
{
if (!uses_gl()) return;
unsigned i = 0;
for (; i < sizeof(shaders) / sizeof(shaders[0]); i++) {
if (strcmp(shaders[i].file_name, configuration.filter) == 0) {
break;
}
}
i += 1;
if (i >= sizeof(shaders) / sizeof(shaders[0])) {
i -= sizeof(shaders) / sizeof(shaders[0]);
}
strcpy(configuration.filter, shaders[i].file_name);
free_shader(&shader);
if (!init_shader_with_name(&shader, configuration.filter)) {
init_shader_with_name(&shader, "NearestNeighbor");
}
}
static void cycle_filter_backwards(unsigned index)
{
if (!uses_gl()) return;
unsigned i = 0;
for (; i < sizeof(shaders) / sizeof(shaders[0]); i++) {
if (strcmp(shaders[i].file_name, configuration.filter) == 0) {
break;
}
}
i -= 1;
if (i >= sizeof(shaders) / sizeof(shaders[0])) {
i = sizeof(shaders) / sizeof(shaders[0]) - 1;
}
strcpy(configuration.filter, shaders[i].file_name);
free_shader(&shader);
if (!init_shader_with_name(&shader, configuration.filter)) {
init_shader_with_name(&shader, "NearestNeighbor");
}
}
static const char *current_filter_name(unsigned index)
{
if (!uses_gl()) return "Requires OpenGL 3.2+";
unsigned i = 0;
for (; i < sizeof(shaders) / sizeof(shaders[0]); i++) {
if (strcmp(shaders[i].file_name, configuration.filter) == 0) {
break;
}
}
if (i == sizeof(shaders) / sizeof(shaders[0])) {
i = 0;
}
return shaders[i].display_name;
}
static void cycle_blending_mode(unsigned index)
{
if (!uses_gl()) return;
if (configuration.blending_mode == GB_FRAME_BLENDING_MODE_ACCURATE) {
configuration.blending_mode = GB_FRAME_BLENDING_MODE_DISABLED;
}
else {
configuration.blending_mode++;
}
}
static void cycle_blending_mode_backwards(unsigned index)
{
if (!uses_gl()) return;
if (configuration.blending_mode == GB_FRAME_BLENDING_MODE_DISABLED) {
configuration.blending_mode = GB_FRAME_BLENDING_MODE_ACCURATE;
}
else {
configuration.blending_mode--;
}
}
static const char *blending_mode_string(unsigned index)
{
if (!uses_gl()) return "Requires OpenGL 3.2+";
return (const char *[]){"Disabled", "Simple", "Accurate"}
[configuration.blending_mode];
}
static void toggle_osd(unsigned index)
{
osd_countdown = 0;
configuration.osd = !configuration.osd;
}
static const char *current_osd_mode(unsigned index)
{
return configuration.osd? "Enabled" : "Disabled";
}
static const struct menu_item graphics_menu[] = {
{"Scaling Mode:", cycle_scaling, current_scaling_mode, cycle_scaling_backwards},
{"Default Window Scale:", cycle_default_scale, current_default_scale, cycle_default_scale_backwards},
{"Scaling Filter:", cycle_filter, current_filter_name, cycle_filter_backwards},
{"Color Correction:", cycle_color_correction, current_color_correction_mode, cycle_color_correction_backwards},
{"Ambient Light Temp.:", decrease_color_temperature, current_color_temperature, increase_color_temperature},
{"Frame Blending:", cycle_blending_mode, blending_mode_string, cycle_blending_mode_backwards},
{"Mono Palette:", cycle_palette, current_palette, cycle_palette_backwards},
{"Display Border:", cycle_border_mode, current_border_mode, cycle_border_mode_backwards},
{"On-Screen Display:", toggle_osd, current_osd_mode, toggle_osd},
{"Back", return_to_root_menu},
{NULL,}
};
static void enter_graphics_menu(unsigned index)
{
current_menu = graphics_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
static const char *highpass_filter_string(unsigned index)
{
return (const char *[]){"None (Keep DC Offset)", "Accurate", "Preserve Waveform"}
[configuration.highpass_mode];
}
static void cycle_highpass_filter(unsigned index)
{
configuration.highpass_mode++;
if (configuration.highpass_mode == GB_HIGHPASS_MAX) {
configuration.highpass_mode = 0;
}
}
static void cycle_highpass_filter_backwards(unsigned index)
{
if (configuration.highpass_mode == 0) {
configuration.highpass_mode = GB_HIGHPASS_MAX - 1;
}
else {
configuration.highpass_mode--;
}
}
static const char *volume_string(unsigned index)
{
static char ret[5];
sprintf(ret, "%d%%", configuration.volume);
return ret;
}
static void increase_volume(unsigned index)
{
configuration.volume += 5;
if (configuration.volume > 100) {
configuration.volume = 100;
}
}
static void decrease_volume(unsigned index)
{
configuration.volume -= 5;
if (configuration.volume > 100) {
configuration.volume = 0;
}
}
static const char *interference_volume_string(unsigned index)
{
static char ret[5];
sprintf(ret, "%d%%", configuration.interference_volume);
return ret;
}
static void increase_interference_volume(unsigned index)
{
configuration.interference_volume += 5;
if (configuration.interference_volume > 100) {
configuration.interference_volume = 100;
}
}
static void decrease_interference_volume(unsigned index)
{
configuration.interference_volume -= 5;
if (configuration.interference_volume > 100) {
configuration.interference_volume = 0;
}
}
static const char *audio_driver_string(unsigned index)
{
return GB_audio_driver_name();
}
static void nop(unsigned index){}
static const struct menu_item audio_menu[] = {
{"Highpass Filter:", cycle_highpass_filter, highpass_filter_string, cycle_highpass_filter_backwards},
{"Volume:", increase_volume, volume_string, decrease_volume},
{"Interference Volume:", increase_interference_volume, interference_volume_string, decrease_interference_volume},
{"Audio Driver:", nop, audio_driver_string},
{"Back", return_to_root_menu},
{NULL,}
};
static void enter_audio_menu(unsigned index)
{
current_menu = audio_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
static void modify_key(unsigned index)
{
gui_state = WAITING_FOR_KEY;
}
static const char *key_name(unsigned index);
static const struct menu_item keyboard_menu[] = {
{"Right:", modify_key, key_name,},
{"Left:", modify_key, key_name,},
{"Up:", modify_key, key_name,},
{"Down:", modify_key, key_name,},
{"A:", modify_key, key_name,},
{"B:", modify_key, key_name,},
{"Select:", modify_key, key_name,},
{"Start:", modify_key, key_name,},
{"Turbo:", modify_key, key_name,},
{"Rewind:", modify_key, key_name,},
{"Slow-Motion:", modify_key, key_name,},
{"Back", enter_controls_menu},
{NULL,}
};
static const char *key_name(unsigned index)
{
if (index > 8) {
return SDL_GetScancodeName(configuration.keys_2[index - 9]);
}
return SDL_GetScancodeName(configuration.keys[index]);
}
static void enter_keyboard_menu(unsigned index)
{
current_menu = keyboard_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
static unsigned joypad_index = 0;
static SDL_Joystick *joystick = NULL;
static SDL_GameController *controller = NULL;
SDL_Haptic *haptic = NULL;
const char *current_joypad_name(unsigned index)
{
static char name[23] = {0,};
const char *orig_name = joystick? SDL_JoystickName(joystick) : NULL;
if (!orig_name) return "Not Found";
unsigned i = 0;
// SDL returns a name with repeated and trailing spaces
while (*orig_name && i < sizeof(name) - 2) {
if (orig_name[0] != ' ' || orig_name[1] != ' ') {
name[i++] = *orig_name > 0? *orig_name : MOJIBAKE_STRING[0];
}
orig_name++;
}
if (i && name[i - 1] == ' ') {
i--;
}
name[i] = 0;
return name;
}
static void cycle_joypads(unsigned index)
{
joypad_index++;
if (joypad_index >= SDL_NumJoysticks()) {
joypad_index = 0;
}
if (haptic) {
SDL_HapticClose(haptic);
haptic = NULL;
}
if (controller) {
SDL_GameControllerClose(controller);
controller = NULL;
}
else if (joystick) {
SDL_JoystickClose(joystick);
joystick = NULL;
}
if ((controller = SDL_GameControllerOpen(joypad_index))) {
joystick = SDL_GameControllerGetJoystick(controller);
}
else {
joystick = SDL_JoystickOpen(joypad_index);
}
if (joystick) {
haptic = SDL_HapticOpenFromJoystick(joystick);
}}
static void cycle_joypads_backwards(unsigned index)
{
joypad_index--;
if (joypad_index >= SDL_NumJoysticks()) {
joypad_index = SDL_NumJoysticks() - 1;
}
if (haptic) {
SDL_HapticClose(haptic);
haptic = NULL;
}
if (controller) {
SDL_GameControllerClose(controller);
controller = NULL;
}
else if (joystick) {
SDL_JoystickClose(joystick);
joystick = NULL;
}
if ((controller = SDL_GameControllerOpen(joypad_index))) {
joystick = SDL_GameControllerGetJoystick(controller);
}
else {
joystick = SDL_JoystickOpen(joypad_index);
}
if (joystick) {
haptic = SDL_HapticOpenFromJoystick(joystick);
}}
static void detect_joypad_layout(unsigned index)
{
gui_state = WAITING_FOR_JBUTTON;
joypad_configuration_progress = 0;
joypad_axis_temp = -1;
}
static void cycle_rumble_mode(unsigned index)
{
if (configuration.rumble_mode == GB_RUMBLE_ALL_GAMES) {
configuration.rumble_mode = GB_RUMBLE_DISABLED;
}
else {
configuration.rumble_mode++;
}
}
static void cycle_rumble_mode_backwards(unsigned index)
{
if (configuration.rumble_mode == GB_RUMBLE_DISABLED) {
configuration.rumble_mode = GB_RUMBLE_ALL_GAMES;
}
else {
configuration.rumble_mode--;
}
}
const char *current_rumble_mode(unsigned index)
{
return (const char *[]){"Disabled", "Rumble Game Paks Only", "All Games"}
[configuration.rumble_mode];
}
static const struct menu_item joypad_menu[] = {
{"Joypad:", cycle_joypads, current_joypad_name, cycle_joypads_backwards},
{"Configure layout", detect_joypad_layout},
{"Rumble Mode:", cycle_rumble_mode, current_rumble_mode, cycle_rumble_mode_backwards},
{"Back", enter_controls_menu},
{NULL,}
};
static void enter_joypad_menu(unsigned index)
{
current_menu = joypad_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
joypad_button_t get_joypad_button(uint8_t physical_button)
{
for (unsigned i = 0; i < JOYPAD_BUTTONS_MAX; i++) {
if (configuration.joypad_configuration[i] == physical_button) {
return i;
}
}
return JOYPAD_BUTTONS_MAX;
}
joypad_axis_t get_joypad_axis(uint8_t physical_axis)
{
for (unsigned i = 0; i < JOYPAD_AXISES_MAX; i++) {
if (configuration.joypad_axises[i] == physical_axis) {
return i;
}
}
return JOYPAD_AXISES_MAX;
}
void connect_joypad(void)
{
if (joystick && !SDL_NumJoysticks()) {
if (controller) {
SDL_GameControllerClose(controller);
controller = NULL;
joystick = NULL;
}
else {
SDL_JoystickClose(joystick);
joystick = NULL;
}
}
else if (!joystick && SDL_NumJoysticks()) {
if ((controller = SDL_GameControllerOpen(0))) {
joystick = SDL_GameControllerGetJoystick(controller);
}
else {
joystick = SDL_JoystickOpen(0);
}
}
if (joystick) {
haptic = SDL_HapticOpenFromJoystick(joystick);
}
}
static void toggle_mouse_control(unsigned index)
{
configuration.allow_mouse_controls = !configuration.allow_mouse_controls;
}
const char *mouse_control_string(unsigned index)
{
return configuration.allow_mouse_controls? "Allow mouse control" : "Disallow mouse control";
}
static const struct menu_item controls_menu[] = {
{"Keyboard Options", enter_keyboard_menu},
{"Joypad Options", enter_joypad_menu},
{"Motion-controlled games:", toggle_mouse_control, mouse_control_string, toggle_mouse_control},
{"Back", return_to_root_menu},
{NULL,}
};
static void enter_controls_menu(unsigned index)
{
current_menu = controls_menu;
current_selection = 0;
scroll = 0;
recalculate_menu_height();
}
static void toggle_audio_recording(unsigned index)
{
if (!GB_is_inited(&gb)) {
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", "Cannot start audio recording, open a ROM file first.", window);
return;
}
static bool is_recording = false;
if (is_recording) {
is_recording = false;
show_osd_text("Audio recording ended");
int error = GB_stop_audio_recording(&gb);
if (error) {
char *message = NULL;
asprintf(&message, "Could not finalize recording: %s", strerror(error));
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", message, window);
free(message);
}
static const char item_string[] = "Start Audio Recording";
memcpy(audio_recording_menu_item, item_string, sizeof(item_string));
return;
}
char *filename = do_save_recording_dialog(GB_get_sample_rate(&gb));
/* Drop events as it SDL seems to catch several in-dialog events */
SDL_Event event;
while (SDL_PollEvent(&event));
if (filename) {
GB_audio_format_t format = GB_AUDIO_FORMAT_RAW;
size_t length = strlen(filename);
if (length >= 5) {
if (strcasecmp(".aiff", filename + length - 5) == 0) {
format = GB_AUDIO_FORMAT_AIFF;
}
else if (strcasecmp(".aifc", filename + length - 5) == 0) {
format = GB_AUDIO_FORMAT_AIFF;
}
else if (length >= 4) {
if (strcasecmp(".aif", filename + length - 4) == 0) {
format = GB_AUDIO_FORMAT_AIFF;
}
else if (strcasecmp(".wav", filename + length - 4) == 0) {
format = GB_AUDIO_FORMAT_WAV;
}
}
}
int error = GB_start_audio_recording(&gb, filename, format);
free(filename);
if (error) {
char *message = NULL;
asprintf(&message, "Could not finalize recording: %s", strerror(error));
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", message, window);
free(message);
return;
}
is_recording = true;
static const char item_string[] = "Stop Audio Recording";
memcpy(audio_recording_menu_item, item_string, sizeof(item_string));
show_osd_text("Audio recording started");
}
}
void convert_mouse_coordinates(signed *x, signed *y)
{
signed width = GB_get_screen_width(&gb);
signed height = GB_get_screen_height(&gb);
signed x_offset = (width - 160) / 2;
signed y_offset = (height - 144) / 2;
*x = (signed)(*x - rect.x / factor) * width / (signed)(rect.w / factor) - x_offset;
*y = (signed)(*y - rect.y / factor) * height / (signed)(rect.h / factor) - y_offset;
if (strcmp("CRT", configuration.filter) == 0) {
*y = *y * 8 / 7;
*y -= 144 / 16;
}
}
void run_gui(bool is_running)
{
SDL_ShowCursor(SDL_ENABLE);
connect_joypad();
/* Draw the background screen */
static SDL_Surface *converted_background = NULL;
if (!converted_background) {
SDL_Surface *background = SDL_LoadBMP(resource_path("background.bmp"));
/* Create a blank background if background.bmp could not be loaded */
if (!background) {
background = SDL_CreateRGBSurface(0, 160, 144, 8, 0, 0, 0, 0);
}
SDL_SetPaletteColors(background->format->palette, gui_palette, 0, 4);
converted_background = SDL_ConvertSurface(background, pixel_format, 0);
SDL_LockSurface(converted_background);
SDL_FreeSurface(background);
for (unsigned i = 4; i--; ) {
gui_palette_native[i] = SDL_MapRGB(pixel_format, gui_palette[i].r, gui_palette[i].g, gui_palette[i].b);
}
}
unsigned width = GB_get_screen_width(&gb);
unsigned height = GB_get_screen_height(&gb);
unsigned x_offset = (width - 160) / 2;
unsigned y_offset = (height - 144) / 2;
uint32_t pixels[width * height];
if (width != 160 || height != 144) {
for (unsigned i = 0; i < width * height; i++) {
pixels[i] = gui_palette_native[0];
}
}
SDL_Event event = {0,};
gui_state = is_running? SHOWING_MENU : SHOWING_DROP_MESSAGE;
bool should_render = true;
current_menu = root_menu = is_running? paused_menu : nonpaused_menu;
recalculate_menu_height();
current_selection = 0;
scroll = 0;
while (true) {
SDL_WaitEvent(&event);
/* Convert Joypad and mouse events (We only generate down events) */
if (gui_state != WAITING_FOR_KEY && gui_state != WAITING_FOR_JBUTTON) {
switch (event.type) {
case SDL_WINDOWEVENT:
should_render = true;
break;
case SDL_MOUSEBUTTONDOWN:
if (gui_state == SHOWING_HELP) {
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_RETURN;
}
else if (gui_state == SHOWING_DROP_MESSAGE) {
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_ESCAPE;
}
else if (gui_state == SHOWING_MENU) {
signed x = event.button.x;
signed y = event.button.y;
convert_mouse_coordinates(&x, &y);
y += scroll;
if (x < 0 || x >= 160 || y < 24) {
continue;
}
unsigned item_y = 24;
unsigned index = 0;
for (const struct menu_item *item = current_menu; item->string; item++, index++) {
if (!item->backwards_handler) {
if (y >= item_y && y < item_y + 12) {
break;
}
item_y += 12;
}
else {
if (y >= item_y && y < item_y + 24) {
break;
}
item_y += 24;
}
}
if (!current_menu[index].string) continue;
current_selection = index;
event.type = SDL_KEYDOWN;
if (current_menu[index].backwards_handler) {
event.key.keysym.scancode = x < 80? SDL_SCANCODE_LEFT : SDL_SCANCODE_RIGHT;
}
else {
event.key.keysym.scancode = SDL_SCANCODE_RETURN;
}
}
break;
case SDL_JOYBUTTONDOWN:
event.type = SDL_KEYDOWN;
joypad_button_t button = get_joypad_button(event.jbutton.button);
if (button == JOYPAD_BUTTON_A) {
event.key.keysym.scancode = SDL_SCANCODE_RETURN;
}
else if (button == JOYPAD_BUTTON_MENU) {
event.key.keysym.scancode = SDL_SCANCODE_ESCAPE;
}
else if (button == JOYPAD_BUTTON_UP) event.key.keysym.scancode = SDL_SCANCODE_UP;
else if (button == JOYPAD_BUTTON_DOWN) event.key.keysym.scancode = SDL_SCANCODE_DOWN;
else if (button == JOYPAD_BUTTON_LEFT) event.key.keysym.scancode = SDL_SCANCODE_LEFT;
else if (button == JOYPAD_BUTTON_RIGHT) event.key.keysym.scancode = SDL_SCANCODE_RIGHT;
break;
case SDL_JOYHATMOTION: {
uint8_t value = event.jhat.value;
if (value != 0) {
uint32_t scancode =
value == SDL_HAT_UP ? SDL_SCANCODE_UP
: value == SDL_HAT_DOWN ? SDL_SCANCODE_DOWN
: value == SDL_HAT_LEFT ? SDL_SCANCODE_LEFT
: value == SDL_HAT_RIGHT ? SDL_SCANCODE_RIGHT
: 0;
if (scancode != 0) {
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = scancode;
}
}
break;
}
case SDL_JOYAXISMOTION: {
static bool axis_active[2] = {false, false};
joypad_axis_t axis = get_joypad_axis(event.jaxis.axis);
if (axis == JOYPAD_AXISES_X) {
if (!axis_active[0] && event.jaxis.value > JOYSTICK_HIGH) {
axis_active[0] = true;
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_RIGHT;
}
else if (!axis_active[0] && event.jaxis.value < -JOYSTICK_HIGH) {
axis_active[0] = true;
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_LEFT;
}
else if (axis_active[0] && event.jaxis.value < JOYSTICK_LOW && event.jaxis.value > -JOYSTICK_LOW) {
axis_active[0] = false;
}
}
else if (axis == JOYPAD_AXISES_Y) {
if (!axis_active[1] && event.jaxis.value > JOYSTICK_HIGH) {
axis_active[1] = true;
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_DOWN;
}
else if (!axis_active[1] && event.jaxis.value < -JOYSTICK_HIGH) {
axis_active[1] = true;
event.type = SDL_KEYDOWN;
event.key.keysym.scancode = SDL_SCANCODE_UP;
}
else if (axis_active[1] && event.jaxis.value < JOYSTICK_LOW && event.jaxis.value > -JOYSTICK_LOW) {
axis_active[1] = false;
}
}
}
}
}
switch (event.type) {
case SDL_QUIT: {
if (!is_running) {
exit(0);
}
else {
pending_command = GB_SDL_QUIT_COMMAND;
return;
}
}
case SDL_WINDOWEVENT: {
if (event.window.event == SDL_WINDOWEVENT_RESIZED) {
update_viewport();
render_texture(NULL, NULL);
}
break;
}
case SDL_DROPFILE: {
if (GB_is_save_state(event.drop.file)) {
if (GB_is_inited(&gb)) {
dropped_state_file = event.drop.file;
pending_command = GB_SDL_LOAD_STATE_FROM_FILE_COMMAND;
}
else {
SDL_free(event.drop.file);
}
break;
}
else {
set_filename(event.drop.file, SDL_free);
pending_command = GB_SDL_NEW_FILE_COMMAND;
return;
}
}
case SDL_JOYBUTTONDOWN:
{
if (gui_state == WAITING_FOR_JBUTTON && joypad_configuration_progress != JOYPAD_BUTTONS_MAX) {
should_render = true;
configuration.joypad_configuration[joypad_configuration_progress++] = event.jbutton.button;
}
break;
}
case SDL_JOYAXISMOTION: {
if (gui_state == WAITING_FOR_JBUTTON &&
joypad_configuration_progress == JOYPAD_BUTTONS_MAX &&
abs(event.jaxis.value) >= 0x4000) {
if (joypad_axis_temp == (uint8_t)-1) {
joypad_axis_temp = event.jaxis.axis;
}
else if (joypad_axis_temp != event.jaxis.axis) {
if (joypad_axis_temp < event.jaxis.axis) {
configuration.joypad_axises[JOYPAD_AXISES_X] = joypad_axis_temp;
configuration.joypad_axises[JOYPAD_AXISES_Y] = event.jaxis.axis;
}
else {
configuration.joypad_axises[JOYPAD_AXISES_Y] = joypad_axis_temp;
configuration.joypad_axises[JOYPAD_AXISES_X] = event.jaxis.axis;
}
gui_state = SHOWING_MENU;
should_render = true;
}
}
break;
}
case SDL_MOUSEWHEEL: {
if (menu_height > 144) {
scroll -= event.wheel.y;
if (scroll < 0) {
scroll = 0;
}
if (scroll >= menu_height - 144) {
scroll = menu_height - 144;
}
mouse_scroling = true;
should_render = true;
}
break;
}
case SDL_KEYDOWN:
if (gui_state == WAITING_FOR_KEY) {
if (current_selection > 8) {
configuration.keys_2[current_selection - 9] = event.key.keysym.scancode;
}
else {
configuration.keys[current_selection] = event.key.keysym.scancode;
}
gui_state = SHOWING_MENU;
should_render = true;
}
else if (event_hotkey_code(&event) == SDL_SCANCODE_F && event.key.keysym.mod & MODIFIER) {
if ((SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN_DESKTOP) == false) {
SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
}
else {
SDL_SetWindowFullscreen(window, 0);
}
update_viewport();
}
else if (event_hotkey_code(&event) == SDL_SCANCODE_O) {
if (event.key.keysym.mod & MODIFIER) {
char *filename = do_open_rom_dialog();
if (filename) {
set_filename(filename, free);
pending_command = GB_SDL_NEW_FILE_COMMAND;
return;
}
}
}
else if (event.key.keysym.scancode == SDL_SCANCODE_RETURN && gui_state == WAITING_FOR_JBUTTON) {
should_render = true;
if (joypad_configuration_progress != JOYPAD_BUTTONS_MAX) {
configuration.joypad_configuration[joypad_configuration_progress] = -1;
}
else {
configuration.joypad_axises[0] = -1;
configuration.joypad_axises[1] = -1;
}
joypad_configuration_progress++;
if (joypad_configuration_progress > JOYPAD_BUTTONS_MAX) {
gui_state = SHOWING_MENU;
}
}
else if (event.key.keysym.scancode == SDL_SCANCODE_ESCAPE) {
if (gui_state == SHOWING_MENU && current_menu != root_menu) {
for (const struct menu_item *item = current_menu; item->string; item++) {
if (strcmp(item->string, "Back") == 0) {
item->handler(0);
break;
}
}
should_render = true;
}
else if (is_running) {
return;
}
else {
if (gui_state == SHOWING_DROP_MESSAGE) {
gui_state = SHOWING_MENU;
}
else if (gui_state == SHOWING_MENU) {
gui_state = SHOWING_DROP_MESSAGE;
}
current_selection = 0;
mouse_scroling = false;
scroll = 0;
current_menu = root_menu;
recalculate_menu_height();
should_render = true;
}
}
else if (gui_state == SHOWING_MENU) {
if (event.key.keysym.scancode == SDL_SCANCODE_DOWN && current_menu[current_selection + 1].string) {
current_selection++;
mouse_scroling = false;
should_render = true;
}
else if (event.key.keysym.scancode == SDL_SCANCODE_UP && current_selection) {
current_selection--;
mouse_scroling = false;
should_render = true;
}
else if (event.key.keysym.scancode == SDL_SCANCODE_RETURN && !current_menu[current_selection].backwards_handler) {
if (current_menu[current_selection].handler) {
current_menu[current_selection].handler(current_selection);
if (pending_command == GB_SDL_RESET_COMMAND && !is_running) {
pending_command = GB_SDL_NO_COMMAND;
}
if (pending_command) {
if (!is_running && pending_command == GB_SDL_QUIT_COMMAND) {
exit(0);
}
return;
}
should_render = true;
}
else {
return;
}
}
else if (event.key.keysym.scancode == SDL_SCANCODE_RIGHT && current_menu[current_selection].backwards_handler) {
current_menu[current_selection].handler(current_selection);
should_render = true;
}
else if (event.key.keysym.scancode == SDL_SCANCODE_LEFT && current_menu[current_selection].backwards_handler) {
current_menu[current_selection].backwards_handler(current_selection);
should_render = true;
}
}
else if (gui_state == SHOWING_HELP) {
current_help_page++;
if (current_help_page == sizeof(help) / sizeof(help[0])) {
gui_state = SHOWING_MENU;
}
should_render = true;
}
break;
}
if (should_render) {
should_render = false;
rerender:
if (width == 160 && height == 144) {
memcpy(pixels, converted_background->pixels, sizeof(pixels));
}
else {
for (unsigned y = 0; y < 144; y++) {
memcpy(pixels + x_offset + width * (y + y_offset), ((uint32_t *)converted_background->pixels) + 160 * y, 160 * 4);
}
}
switch (gui_state) {
case SHOWING_DROP_MESSAGE:
draw_text_centered(pixels, width, height, 8 + y_offset, "Press ESC for menu", gui_palette_native[3], gui_palette_native[0], false);
draw_text_centered(pixels, width, height, 116 + y_offset, "Drop a GB or GBC", gui_palette_native[3], gui_palette_native[0], false);
draw_text_centered(pixels, width, height, 128 + y_offset, "file to play", gui_palette_native[3], gui_palette_native[0], false);
break;
case SHOWING_MENU:
draw_text_centered(pixels, width, height, 8 + y_offset, "SameBoy", gui_palette_native[3], gui_palette_native[0], false);
unsigned i = 0, y = 24;
for (const struct menu_item *item = current_menu; item->string; item++, i++) {
if (i == current_selection && !mouse_scroling) {
if (i == 0) {
if (y < scroll) {
scroll = (y - 4) / 12 * 12;
goto rerender;
}
}
else {
if (y < scroll + 24) {
scroll = (y - 24) / 12 * 12;
goto rerender;
}
}
}
if (i == current_selection && i == 0 && scroll != 0 && !mouse_scroling) {
scroll = 0;
goto rerender;
}
if (item->value_getter && !item->backwards_handler) {
char line[25];
snprintf(line, sizeof(line), "%s%*s", item->string, 24 - (unsigned)strlen(item->string), item->value_getter(i));
draw_text_centered(pixels, width, height, y + y_offset, line, gui_palette_native[3], gui_palette_native[0],
i == current_selection ? DECORATION_SELECTION : DECORATION_NONE);
y += 12;
}
else {
draw_text_centered(pixels, width, height, y + y_offset, item->string, gui_palette_native[3], gui_palette_native[0],
i == current_selection && !item->value_getter ? DECORATION_SELECTION : DECORATION_NONE);
y += 12;
if (item->value_getter) {
draw_text_centered(pixels, width, height, y + y_offset - 1, item->value_getter(i), gui_palette_native[3], gui_palette_native[0],
i == current_selection ? DECORATION_ARROWS : DECORATION_NONE);
y += 12;
}
}
if (i == current_selection && !mouse_scroling) {
if (y > scroll + 144) {
scroll = (y - 144) / 12 * 12;
if (scroll > menu_height - 144) {
scroll = menu_height - 144;
}
goto rerender;
}
}
}
if (scrollbar_size) {
unsigned scrollbar_offset = (140 - scrollbar_size) * scroll / (menu_height - 144);
if (scrollbar_offset + scrollbar_size > 140) {
scrollbar_offset = 140 - scrollbar_size;
}
for (unsigned y = 0; y < 140; y++) {
uint32_t *pixel = pixels + x_offset + 156 + width * (y + y_offset + 2);
if (y >= scrollbar_offset && y < scrollbar_offset + scrollbar_size) {
pixel[0] = pixel[1]= gui_palette_native[2];
}
else {
pixel[0] = pixel[1]= gui_palette_native[1];
}
}
}
break;
case SHOWING_HELP:
draw_text(pixels, width, height, 2 + x_offset, 2 + y_offset, help[current_help_page], gui_palette_native[3], gui_palette_native[0], false);
break;
case WAITING_FOR_KEY:
draw_text_centered(pixels, width, height, 68 + y_offset, "Press a Key", gui_palette_native[3], gui_palette_native[0], DECORATION_NONE);
break;
case WAITING_FOR_JBUTTON:
draw_text_centered(pixels, width, height, 68 + y_offset,
joypad_configuration_progress != JOYPAD_BUTTONS_MAX ? "Press button for" : "Move the Analog Stick",
gui_palette_native[3], gui_palette_native[0], DECORATION_NONE);
draw_text_centered(pixels, width, height, 80 + y_offset,
(const char *[])
{
"Right",
"Left",
"Up",
"Down",
"A",
"B",
"Select",
"Start",
"Open Menu",
"Turbo",
"Rewind",
"Slow-Motion",
"",
} [joypad_configuration_progress],
gui_palette_native[3], gui_palette_native[0], DECORATION_NONE);
draw_text_centered(pixels, width, height, 104 + y_offset, "Press Enter to skip", gui_palette_native[3], gui_palette_native[0], DECORATION_NONE);
break;
}
render_texture(pixels, NULL);
#ifdef _WIN32
/* Required for some Windows 10 machines, god knows why */
render_texture(pixels, NULL);
#endif
}
}
}