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338ee076e5
Allow the opacity command to return the current opacity, as per #7173, e.g.: swaymsg -r opacity get and make multiplicative changes easy, e.g.: swaymsg opacity mul 1.25 swaymsg opacity div 1.25 Multiplicative options are due to human senses tending to work on a log-scale, e.g. sound is measured with decibels.
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
#include <assert.h>
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#include <stdlib.h>
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#include <strings.h>
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#include "sway/commands.h"
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#include "sway/tree/view.h"
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#include "log.h"
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struct cmd_results *cmd_opacity(int argc, char **argv) {
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struct cmd_results *error = NULL;
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if ((error = checkarg(argc, "opacity", EXPECTED_AT_LEAST, 1))) {
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return error;
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}
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struct sway_container *con = config->handler_context.container;
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if (con == NULL) {
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return cmd_results_new(CMD_FAILURE, "No current container");
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}
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enum { SET, PLUS, MINUS, MUL, DIV } op = SET;
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char *argval = argv[0];
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if (argc == 1) {
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if (!strcasecmp(argv[0], "get")) {
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return cmd_results_new(CMD_SUCCESS, "%f", con->alpha);
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}
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} else {
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if ((error = checkarg(argc, "opacity", EXPECTED_EQUAL_TO, 2))) {
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return error;
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}
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if (!strcasecmp(argv[0], "set")) {
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op = SET;
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} else if (!strcasecmp(argv[0], "plus")) {
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op = PLUS;
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} else if (!strcasecmp(argv[0], "minus")) {
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op = MINUS;
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} else if (!strcasecmp(argv[0], "mul")) {
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op = MUL;
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} else if (!strcasecmp(argv[0], "div")) {
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op = DIV;
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} else {
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return cmd_results_new(CMD_INVALID,
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"Expected: get,set|plus|minus|mul|div <0..1>: %s", argv[0]);
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}
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argval = argv[1];
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}
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char *err;
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float val = strtof(argval, &err);
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if (*err) {
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return cmd_results_new(CMD_INVALID, "opacity float invalid");
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}
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switch (op) {
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case SET: break;
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case PLUS: val += con->alpha; break;
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case MINUS: val -= con->alpha; break;
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case MUL: val *= con->alpha; break;
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case DIV: val = con->alpha / val; break;
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}
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if (val < 0 || val > 1) {
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return cmd_results_new(CMD_FAILURE, "opacity value out of bounds");
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}
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con->alpha = val;
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container_damage_whole(con);
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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