1 files changed, 213 insertions, 0 deletions

diff --git a/sway/config/output.c b/sway/config/output.c
new file mode 100644
index 00000000..1c298d37
--- /dev/null
+++ b/sway/config/output.c
@@ -0,0 +1,213 @@
+#define _XOPEN_SOURCE 700
+#include <assert.h>
+#include <stdbool.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <wlr/types/wlr_output.h>
+#include <wlr/types/wlr_output_layout.h>
+#include "sway/config.h"
+#include "sway/output.h"
+#include "log.h"
+
+int output_name_cmp(const void *item, const void *data) {
+        const struct output_config *output = item;
+        const char *name = data;
+
+        return strcmp(output->name, name);
+}
+
+void output_get_identifier(char *identifier, size_t len,
+                struct sway_output *output) {
+        struct wlr_output *wlr_output = output->wlr_output;
+        snprintf(identifier, len, "%s %s %s", wlr_output->make, wlr_output->model,
+                wlr_output->serial);
+}
+
+struct output_config *new_output_config(const char *name) {
+        struct output_config *oc = calloc(1, sizeof(struct output_config));
+        if (oc == NULL) {
+                return NULL;
+        }
+        oc->name = strdup(name);
+        if (oc->name == NULL) {
+                free(oc);
+                return NULL;
+        }
+        oc->enabled = -1;
+        oc->width = oc->height = -1;
+        oc->refresh_rate = -1;
+        oc->x = oc->y = -1;
+        oc->scale = -1;
+        oc->transform = -1;
+        return oc;
+}
+
+void merge_output_config(struct output_config *dst, struct output_config *src) {
+        if (src->name) {
+                free(dst->name);
+                dst->name = strdup(src->name);
+        }
+        if (src->enabled != -1) {
+                dst->enabled = src->enabled;
+        }
+        if (src->width != -1) {
+                dst->width = src->width;
+        }
+        if (src->height != -1) {
+                dst->height = src->height;
+        }
+        if (src->x != -1) {
+                dst->x = src->x;
+        }
+        if (src->y != -1) {
+                dst->y = src->y;
+        }
+        if (src->scale != -1) {
+                dst->scale = src->scale;
+        }
+        if (src->refresh_rate != -1) {
+                dst->refresh_rate = src->refresh_rate;
+        }
+        if (src->transform != -1) {
+                dst->transform = src->transform;
+        }
+        if (src->background) {
+                free(dst->background);
+                dst->background = strdup(src->background);
+        }
+        if (src->background_option) {
+                free(dst->background_option);
+                dst->background_option = strdup(src->background_option);
+        }
+}
+
+static void set_mode(struct wlr_output *output, int width, int height,
+                float refresh_rate) {
+        int mhz = (int)(refresh_rate * 1000);
+        if (wl_list_empty(&output->modes)) {
+                wlr_log(L_DEBUG, "Assigning custom mode to %s", output->name);
+                wlr_output_set_custom_mode(output, width, height, mhz);
+                return;
+        }
+
+        struct wlr_output_mode *mode, *best = NULL;
+        wl_list_for_each(mode, &output->modes, link) {
+                if (mode->width == width && mode->height == height) {
+                        if (mode->refresh == mhz) {
+                                best = mode;
+                                break;
+                        }
+                        best = mode;
+                }
+        }
+        if (!best) {
+                wlr_log(L_ERROR, "Configured mode for %s not available", output->name);
+        } else {
+                wlr_log(L_DEBUG, "Assigning configured mode to %s", output->name);
+                wlr_output_set_mode(output, best);
+        }
+}
+
+void terminate_swaybg(pid_t pid) {
+        int ret = kill(pid, SIGTERM);
+        if (ret != 0) {
+                wlr_log(L_ERROR, "Unable to terminate swaybg [pid: %d]", pid);
+        } else {
+                int status;
+                waitpid(pid, &status, 0);
+        }
+}
+
+void apply_output_config(struct output_config *oc, struct sway_container *output) {
+        assert(output->type == C_OUTPUT);
+
+        struct wlr_output_layout *output_layout =
+                root_container.sway_root->output_layout;
+        struct wlr_output *wlr_output = output->sway_output->wlr_output;
+
+        if (oc && oc->enabled == 0) {
+                container_destroy(output);
+                wlr_output_layout_remove(root_container.sway_root->output_layout,
+                        wlr_output);
+                return;
+        }
+
+        if (oc && oc->width > 0 && oc->height > 0) {
+                wlr_log(L_DEBUG, "Set %s mode to %dx%d (%f GHz)", oc->name, oc->width,
+                        oc->height, oc->refresh_rate);
+                set_mode(wlr_output, oc->width, oc->height, oc->refresh_rate);
+        }
+        if (oc && oc->scale > 0) {
+                wlr_log(L_DEBUG, "Set %s scale to %f", oc->name, oc->scale);
+                wlr_output_set_scale(wlr_output, oc->scale);
+        }
+        if (oc && oc->transform >= 0) {
+                wlr_log(L_DEBUG, "Set %s transform to %d", oc->name, oc->transform);
+                wlr_output_set_transform(wlr_output, oc->transform);
+        }
+
+        // Find position for it
+        if (oc && (oc->x != -1 || oc->y != -1)) {
+                wlr_log(L_DEBUG, "Set %s position to %d, %d", oc->name, oc->x, oc->y);
+                wlr_output_layout_add(output_layout, wlr_output, oc->x, oc->y);
+        } else {
+                wlr_output_layout_add_auto(output_layout, wlr_output);
+        }
+
+        if (!oc || !oc->background) {
+                // Look for a * config for background
+                int i = list_seq_find(config->output_configs, output_name_cmp, "*");
+                if (i >= 0) {
+                        oc = config->output_configs->items[i];
+                } else {
+                        oc = NULL;
+                }
+        }
+
+        int output_i;
+        for (output_i = 0; output_i < root_container.children->length; ++output_i) {
+                if (root_container.children->items[output_i] == output) {
+                        break;
+                }
+        }
+
+        if (oc && oc->background) {
+                if (output->sway_output->bg_pid != 0) {
+                        terminate_swaybg(output->sway_output->bg_pid);
+                }
+
+                wlr_log(L_DEBUG, "Setting background for output %d to %s",
+                                output_i, oc->background);
+
+                size_t len = snprintf(NULL, 0, "%s %d %s %s",
+                                config->swaybg_command ? config->swaybg_command : "swaybg",
+                                output_i, oc->background, oc->background_option);
+                char *command = malloc(len + 1);
+                if (!command) {
+                        wlr_log(L_DEBUG, "Unable to allocate swaybg command");
+                        return;
+                }
+                snprintf(command, len + 1, "%s %d %s %s",
+                                config->swaybg_command ? config->swaybg_command : "swaybg",
+                                output_i, oc->background, oc->background_option);
+                wlr_log(L_DEBUG, "-> %s", command);
+
+                char *const cmd[] = { "sh", "-c", command, NULL };
+                output->sway_output->bg_pid = fork();
+                if (output->sway_output->bg_pid == 0) {
+                        execvp(cmd[0], cmd);
+                }
+        }
+}
+
+void free_output_config(struct output_config *oc) {
+        if (!oc) {
+                return;
+        }
+        free(oc->name);
+        free(oc->background);
+        free(oc->background_option);
+        free(oc);
+}