yambar/decorations/underline.c
Daniel Eklöf 29e9cea1dd decorations: use calloc() instead of malloc()
In cases where it makes sense, use calloc() instead of malloc():

* When allocating large objects with many members, many for which
  NULL/0 is a good default value.
* Arrays etc where we explicitly initialize to NULL anyway.
2019-02-09 10:58:26 +01:00

73 lines
1.7 KiB
C

#include <stdlib.h>
#include "../config.h"
#include "../config-verify.h"
#include "../decoration.h"
#include "../plugin.h"
struct private {
int size;
struct rgba color;
};
static void
destroy(struct deco *deco)
{
struct private *d = deco->private;
free(d);
free(deco);
}
static void
expose(const struct deco *deco, cairo_t *cr, int x, int y, int width, int height)
{
const struct private *d = deco->private;
cairo_set_source_rgba(
cr, d->color.red, d->color.green, d->color.blue, d->color.alpha);
cairo_rectangle(cr, x, y + height - d->size, width, d->size);
cairo_fill(cr);
}
static struct deco *
underline_new(int size, struct rgba color)
{
struct private *priv = calloc(1, sizeof(*priv));
priv->size = size;
priv->color = color;
struct deco *deco = calloc(1, sizeof(*deco));
deco->private = priv;
deco->expose = &expose;
deco->destroy = &destroy;
return deco;
}
static struct deco *
from_conf(const struct yml_node *node)
{
const struct yml_node *size = yml_get_value(node, "size");
const struct yml_node *color = yml_get_value(node, "color");
return underline_new(yml_value_as_int(size), conf_to_color(color));
}
static bool
verify_conf(keychain_t *chain, const struct yml_node *node)
{
static const struct attr_info attrs[] = {
{"size", true, &conf_verify_int},
{"color", true, &conf_verify_color},
DECORATION_COMMON_ATTRS,
};
return conf_verify_dict(chain, node, attrs);
}
const struct deco_iface deco_underline_iface = {
.verify_conf = &verify_conf,
.from_conf = &from_conf,
};
#if defined(CORE_PLUGINS_AS_SHARED_LIBRARIES)
extern const struct deco_iface iface __attribute__((weak, alias("deco_underline_iface")));
#endif