mirror of
https://codeberg.org/vyivel/dulcepan/
synced 2026-04-26 21:14:40 +03:00
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
#include <errno.h>
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#include <sfdo-basedir.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dulcepan.h"
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#define STATE_SUBPATH "dulcepan"
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// State format:
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//
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// <output name>
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// <x> <y> <width> <height>
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void dp_persistent_load(struct dp_state *state) {
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size_t dir_len;
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const char *dir = sfdo_basedir_get_cache_home(state->basedir_ctx, &dir_len);
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state->persistent_path = dp_zalloc(dir_len + sizeof(STATE_SUBPATH));
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memcpy(state->persistent_path, dir, dir_len);
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memcpy(state->persistent_path + dir_len, STATE_SUBPATH, sizeof(STATE_SUBPATH));
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FILE *fp = fopen(state->persistent_path, "r");
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if (fp == NULL) {
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if (errno != ENOENT) {
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dp_log_error("Failed to open %s: %s", state->persistent_path, strerror(errno));
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}
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return;
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}
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char name[32];
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double x, y, width, height;
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int n_read = 0;
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fgets(name, sizeof(name), fp);
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size_t name_len = strlen(name);
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if (name[name_len - 1] == '\n') {
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name[--name_len] = '\0';
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}
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n_read += fscanf(fp, "%lf %lf %lf %lf", &x, &y, &width, &height);
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bool ok = ferror(fp) == 0 && n_read == 4;
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fclose(fp);
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if (!ok) {
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dp_log_error("Persistent state: bad format");
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return;
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}
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struct dp_output *selection_output = NULL;
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struct dp_output *output;
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wl_list_for_each (output, &state->outputs, link) {
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if (strcmp(output->name, name) == 0) {
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selection_output = output;
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break;
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}
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}
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if (selection_output == NULL) {
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dp_log_error("Persistent state: failed to find cached output %s", name);
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return;
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}
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if (x < 0 || y < 0 || x + width > selection_output->effective_width ||
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y + height > selection_output->effective_height) {
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dp_log_error("Persistent state: invalid selection geometry", name);
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return;
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}
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struct dp_selection *selection = &state->selection;
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selection->output = selection_output;
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selection->x = x;
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selection->y = y;
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selection->width = width;
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selection->height = height;
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}
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void dp_persistent_save(struct dp_state *state) {
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struct dp_selection *selection = &state->selection;
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if (selection->output != NULL) {
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FILE *fp = fopen(state->persistent_path, "w");
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if (fp == NULL) {
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dp_log_error("Failed to open %s: %s", state->persistent_path, strerror(errno));
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} else {
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fprintf(fp,
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"%s\n"
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"%lf %lf %lf %lf\n",
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selection->output->name, selection->x, selection->y, selection->width,
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selection->height);
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fclose(fp);
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}
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}
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free(state->persistent_path);
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}
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