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/*
* Copyright (C) 2021 P. J. McDermott
*
* This file is part of Maze Fight
*
* Maze Fight 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 Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Maze Fight 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 Maze Fight. If not, see <http://www.gnu.org/licenses/>.
*/
#include <SDL.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "../tk.h"
#include "widget.h"
struct _mftk_radio_state {
struct mftk_radio *r;
int state;
};
struct mftk_radio {
struct mftk_widget parent;
struct mftk_widget **children;
struct mftk_widget *grid;
struct _mftk_radio_state *states;
int state;
int options;
int (*action)(void *, int);
void *user_data;
};
static int
_mftk_radio_state_change(void *user_data, int state)
{
struct _mftk_radio_state *rs = (struct _mftk_radio_state *) user_data;
if (state == SDL_FALSE) {
/* Radio buttons can't be deselected */
mftk_check_set_state(rs->r->children[rs->r->state], SDL_TRUE);
return 0;
} else {
/* Deselect previous check button */
mftk_check_set_state(rs->r->children[rs->r->state], SDL_FALSE);
/* Set and announce new state */
rs->r->state = rs->state;
if (rs->r->action == NULL) {
return 0;
}
return rs->r->action(rs->r->user_data, rs->r->state);
}
}
static void
_mftk_radio_layout(struct mftk_widget *w)
{
struct mftk_radio *r = (struct mftk_radio *) w;
mftk_widget_layout(r->grid);
w->w = r->grid->w;
w->h = r->grid->h;
}
static void
_mftk_radio_focus(struct mftk_widget *w __attribute__((__unused__)))
{
/* Nothing to do */
}
static void
_mftk_radio_defocus(struct mftk_widget *w __attribute__((__unused__)))
{
/* Nothing to do */
}
static int
_mftk_radio_key_event(struct mftk_widget *w, SDL_Event *e)
{
struct mftk_radio *r = (struct mftk_radio *) w;
switch (e->type) {
case SDL_KEYDOWN:
switch (e->key.keysym.sym) {
case SDLK_UP:
mftk_check_set_state(r->children[
r->state], SDL_FALSE);
--r->state;
if (r->state < 0) {
r->state = r->options - 1;
}
mftk_check_set_state(r->children[
r->state], SDL_TRUE);
if (r->action == NULL) {
return 0;
}
return r->action(r->user_data,r->state);
case SDLK_DOWN:
mftk_check_set_state(r->children[
r->state], SDL_FALSE);
++r->state;
if (r->state >= r->options) {
r->state = 0;
}
mftk_check_set_state(r->children[
r->state], SDL_TRUE);
if (r->action == NULL) {
return 0;
}
return r->action(r->user_data,r->state);
default:
break;
}
default:
break;
}
return 0;
}
static int
_mftk_radio_mouse_event(struct mftk_widget *w, SDL_Event *e, int x, int y)
{
struct mftk_radio *r = (struct mftk_radio *) w;
switch (e->type) {
case SDL_MOUSEBUTTONUP:
if (e->button.button == SDL_BUTTON_LEFT) {
mftk_window_focus(w->window, w);
return mftk_widget_mouse_event(r->grid, e,
x, y);
}
break;
default:
break;
}
return 0;
}
static int
_mftk_radio_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
{
struct mftk_radio *r = (struct mftk_radio *) w;
return mftk_widget_render(r->grid, renderer, x, y);
}
static void
_mftk_radio_destroy(struct mftk_widget *w)
{
struct mftk_radio *r = (struct mftk_radio *) w;
mftk_widget_destroy(&r->grid);
free(r->states);
}
struct mftk_widget *
mftk_radio_new(int butn_width, int butn_padding, SDL_Color *butn_color,
SDL_Color *mark_color, int label_padding, int item_padding,
TTF_Font *font, SDL_Color *text_color,
int (*action)(void *, int), void *user_data,
SDL_Renderer *renderer, int state, int options, ...)
{
struct mftk_widget *w;
struct mftk_radio *r;
va_list ap;
int i;
mftk_widget_init_focusable(w, r, radio);
r->children = calloc(options, sizeof(*r->children));
if (r->children == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't create widget: %s",
strerror(errno));
free(r);
return NULL;
}
r->states = calloc(options, sizeof(*r->states));
if (r->states == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't create widget: %s",
strerror(errno));
free(r->children);
free(r);
return NULL;
}
va_start(ap, options);
for (i = 0; i < options; ++i) {
r->children[i] = mftk_check_new(butn_width, butn_padding,
butn_color, mark_color, (i == state),
label_padding, font, va_arg(ap, const char *),
text_color, &_mftk_radio_state_change,
&r->states[i], renderer);
if (r->children[i] == NULL) {
for (; i >= 0; --i) {
mftk_widget_destroy(&r->children[i]);
}
free(r->children);
free(r->states);
free(r);
va_end(ap);
return NULL;
}
mftk_check_set_shape(r->children[i], MFTK_CHECK_SHAPE_CIR);
mftk_check_set_steals_focus(r->children[i], SDL_FALSE);
r->states[i].r = r;
r->states[i].state = i;
}
va_end(ap);
r->grid = mftk_grid_new_a(options, 1, item_padding, 0, r->children,
NULL);
if (r->grid == NULL) {
for (i = 0; i < options; ++i) {
mftk_widget_destroy(&r->children[i]);
}
free(r->children);
free(r->states);
free(r);
}
r->state = state;
r->options = options;
r->action = action;
r->user_data = user_data;
return w;
}
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