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#include <assert.h>
#include <stdlib.h>
#include "sway/commands.h"
#include "sway/tree/view.h"
#include "log.h"
static bool parse_opacity(const char *opacity, float *val) {
char *err;
*val = strtof(opacity, &err);
if (*val < 0 || *val > 1 || *err) {
return false;
}
return true;
}
struct cmd_results *cmd_opacity(int argc, char **argv) {
struct cmd_results *error = NULL;
if ((error = checkarg(argc, "layout", EXPECTED_EQUAL_TO, 1))) {
return error;
}
struct sway_container *con =
config->handler_context.current_container;
float opacity = 0.0f;
if (!parse_opacity(argv[0], &opacity)) {
return cmd_results_new(CMD_INVALID, "opacity <value>",
"Invalid value (expected 0..1): %s", argv[0]);
}
con->alpha = opacity;
if (con->type == C_VIEW) {
view_damage_whole(con->sway_view);
}
return cmd_results_new(CMD_SUCCESS, NULL, NULL);
}
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