swayfx/sway/commands/output/transform.c
Simon Ser 83d769805c Restrict relative output transforms to runtime changes
Prevent them from being used in the config file.

This is a breaking config file change.

References: https://github.com/swaywm/sway/issues/5236
2020-04-21 14:52:17 +02:00

90 lines
3 KiB
C

#include <string.h>
#include "sway/commands.h"
#include "sway/config.h"
#include "log.h"
#include "sway/output.h"
static enum wl_output_transform invert_rotation_direction(
enum wl_output_transform t) {
switch (t) {
case WL_OUTPUT_TRANSFORM_90:
return WL_OUTPUT_TRANSFORM_270;
case WL_OUTPUT_TRANSFORM_270:
return WL_OUTPUT_TRANSFORM_90;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
return WL_OUTPUT_TRANSFORM_FLIPPED_270;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
return WL_OUTPUT_TRANSFORM_FLIPPED_90;
default:
return t;
}
}
struct cmd_results *output_cmd_transform(int argc, char **argv) {
if (!config->handler_context.output_config) {
return cmd_results_new(CMD_FAILURE, "Missing output config");
}
if (!argc) {
return cmd_results_new(CMD_INVALID, "Missing transform argument.");
}
enum wl_output_transform transform;
if (strcmp(*argv, "normal") == 0 ||
strcmp(*argv, "0") == 0) {
transform = WL_OUTPUT_TRANSFORM_NORMAL;
} else if (strcmp(*argv, "90") == 0) {
transform = WL_OUTPUT_TRANSFORM_90;
} else if (strcmp(*argv, "180") == 0) {
transform = WL_OUTPUT_TRANSFORM_180;
} else if (strcmp(*argv, "270") == 0) {
transform = WL_OUTPUT_TRANSFORM_270;
} else if (strcmp(*argv, "flipped") == 0) {
transform = WL_OUTPUT_TRANSFORM_FLIPPED;
} else if (strcmp(*argv, "flipped-90") == 0) {
transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
} else if (strcmp(*argv, "flipped-180") == 0) {
transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
} else if (strcmp(*argv, "flipped-270") == 0) {
transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
} else {
return cmd_results_new(CMD_INVALID, "Invalid output transform.");
}
// Sway uses clockwise transforms, while WL_OUTPUT_TRANSFORM_* describe
// anti-clockwise transforms
transform = invert_rotation_direction(transform);
struct output_config *output = config->handler_context.output_config;
config->handler_context.leftovers.argc = argc - 1;
config->handler_context.leftovers.argv = argv + 1;
if (argc > 1 &&
(strcmp(argv[1], "clockwise") == 0 || strcmp(argv[1], "anticlockwise") == 0)) {
if (config->reloading) {
return cmd_results_new(CMD_INVALID,
"Relative transforms cannot be used in the configuration file");
}
if (!sway_assert(output->name != NULL, "Output config name not set")) {
return NULL;
}
if (strcmp(output->name, "*") == 0) {
return cmd_results_new(CMD_INVALID,
"Cannot apply relative transform to all outputs.");
}
struct sway_output *s_output = output_by_name_or_id(output->name);
if (s_output == NULL) {
return cmd_results_new(CMD_INVALID,
"Cannot apply relative transform to unknown output %s", output->name);
}
if (strcmp(argv[1], "anticlockwise") == 0) {
transform = invert_rotation_direction(transform);
}
struct wlr_output *w_output = s_output->wlr_output;
transform = wlr_output_transform_compose(w_output->transform, transform);
config->handler_context.leftovers.argv += 1;
config->handler_context.leftovers.argc -= 1;
}
output->transform = transform;
return NULL;
}