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#include <string.h>
#include <math.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "scheme.h"
#include "../any_log.h"
typedef struct {
effect_t effect;
unsigned int width;
cairo_pattern_t *gradient;
} effect_shine_t;
extern double cubic_bezier(double x, double a, double b, double c, double d);
static void effect_shine_post(effect_t *effect, layout_t *layout, cairo_t *cr)
{
struct timespec now;
timespec_get(&now, TIME_UTC);
struct timespec diff = timespec_diff(now, effect->start);
double t = (double)timespec_to_ms(diff) / timespec_to_ms(effect->info->duration);
double s = cubic_bezier(t, 0.19, 1.0, 0.22, 1.0);
effect_shine_t *shine = (effect_shine_t *)effect;
unsigned int x = layout->x + s * layout->width - shine->width;
unsigned int y = layout->y;
cairo_set_operator(cr, CAIRO_OPERATOR_ATOP);
cairo_set_source(cr, shine->gradient);
cairo_rectangle(cr, x, y - layout->height / 2, shine->width, layout->height);
cairo_fill(cr);
}
static effect_t *effect_shine_allocate(const effect_info_t *info)
{
effect_shine_t *effect = malloc(sizeof(effect_shine_t));
effect_init((effect_t *)effect, info);
effect->width = 20;
effect->gradient = cairo_pattern_create_linear(0, 0, effect->width, 0);
cairo_pattern_add_color_stop_rgba(effect->gradient, 1, 1, 1, 1, 0.1);
cairo_pattern_add_color_stop_rgba(effect->gradient, 0.5, 1, 1, 1, 0.8);
cairo_pattern_add_color_stop_rgba(effect->gradient, 1, 1, 1, 1, 0.1);
return (effect_t *)effect;
}
static void effect_shine_finalize(effect_shine_t *effect)
{
cairo_pattern_destroy(effect->gradient);
free(effect);
}
static bool effect_shine_validate(effect_info_t *info, const effect_scheme_t *scheme)
{
return true;
}
static const config_entry_t effect_shine_entries[] = {
{ 0 },
};
const effect_scheme_t effect_shine_scheme = {
.name = "shine",
.info = {
.duration = {
.tv_sec = 0,
.tv_nsec = 200000000,
},
.allocate = effect_shine_allocate,
.finalize = (effect_finalize_t)effect_shine_finalize,
.post = effect_shine_post,
},
.size = sizeof(unsigned int),
.entries = effect_shine_entries,
.validate = effect_shine_validate,
};
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