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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 "../tk.h"
#include "style.h"
#include "widget.h"
struct mftk_button {
struct mftk_widget parent;
struct mftk_widget *label;
int padding;
int border;
int (*action)(void *);
void *user_data;
};
static void
_mftk_button_layout(struct mftk_widget *w)
{
struct mftk_button *b = (struct mftk_button *) w;
mftk_widget_layout(b->label);
w->w = b->label->w + b->padding * 2 + b->border * 2;
w->h = b->label->h + b->padding * 2 + b->border * 2;
}
static void
_mftk_button_focus(struct mftk_widget *w __attribute__((__unused__)))
{
/* Nothing to do */
}
static void
_mftk_button_defocus(struct mftk_widget *w __attribute__((__unused__)))
{
/* Nothing to do */
}
static int
_mftk_button_key_event(struct mftk_widget *w, SDL_Event *e)
{
struct mftk_button *b = (struct mftk_button *) w;
switch (e->type) {
case SDL_KEYDOWN:
switch (e->key.keysym.sym) {
case SDLK_SPACE:
case SDLK_RETURN:
case SDLK_KP_ENTER:
if (b->action == NULL) {
return 0;
}
return b->action(b->user_data);
default:
break;
}
default:
break;
}
return 0;
}
static int
_mftk_button_mouse_event(struct mftk_widget *w, SDL_Event *e,
int x __attribute__((__unused__)),
int y __attribute__((__unused__)))
{
struct mftk_button *b = (struct mftk_button *) w;
switch (e->type) {
case SDL_MOUSEBUTTONUP:
if (e->button.button == SDL_BUTTON_LEFT) {
mftk_window_focus(w->window, w);
if (b->action == NULL) {
return 0;
}
return b->action(b->user_data);
}
break;
default:
break;
}
return 0;
}
static int
_mftk_button_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
{
struct mftk_button *b = (struct mftk_button *) w;
SDL_Rect rect;
SDL_Color border;
rect.x = x;
rect.y = y;
rect.w = w->w;
rect.h = w->h;
if (w->focused == SDL_TRUE) {
border.r = MFTK_COLOR_BDRF_R, border.g = MFTK_COLOR_BDRF_G;
border.b = MFTK_COLOR_BDRF_B, border.a = MFTK_COLOR_BDRF_A;
} else {
border.r = MFTK_COLOR_BDRN_R, border.g = MFTK_COLOR_BDRN_G;
border.b = MFTK_COLOR_BDRN_B, border.a = MFTK_COLOR_BDRN_A;
}
if (SDL_SetRenderDrawColor(renderer,
border.r, border.g, border.b, border.a) < 0 ||
SDL_RenderFillRect(renderer, &rect) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't render widget: %s",
SDL_GetError());
return -1;
}
rect.x += b->border;
rect.y += b->border;
rect.w -= b->border * 2;
rect.h -= b->border * 2;
if (SDL_SetRenderDrawColor(renderer,
MFTK_COLOR_BACK_R, MFTK_COLOR_BACK_G,
MFTK_COLOR_BACK_B, MFTK_COLOR_BACK_A) < 0 ||
SDL_RenderFillRect(renderer, &rect) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't render widget: %s",
SDL_GetError());
return -1;
}
if (mftk_widget_render(b->label, renderer,
x + b->padding, y + b->padding) < 0) {
return -1;
}
return 0;
}
static void
_mftk_button_destroy(struct mftk_widget *w)
{
struct mftk_button *b = (struct mftk_button *) w;
mftk_widget_destroy(&b->label);
}
struct mftk_widget *
mftk_button_new(TTF_Font *font, const char *text, int padding, int border,
int (*action)(void *), void *user_data, SDL_Renderer *renderer)
{
struct mftk_widget *w;
struct mftk_button *b;
mftk_widget_init_focusable(w, b, button);
b->label = mftk_label_new(font, text, renderer);
if (b->label == NULL) {
free(b);
return NULL;
}
b->padding = padding;
b->border = border;
b->action = action;
b->user_data = user_data;
return w;
}
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