Atlas - SDL_progressbar.c
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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_progressbar.h"
22#include "SDL_internal.h"
23
24#include "SDL_dbus.h"
25
26#ifdef SDL_USE_LIBDBUS
27
28#include <unistd.h>
29
30#include "../unix/SDL_appid.h"
31
32#define UnityLauncherAPI_DBUS_INTERFACE "com.canonical.Unity.LauncherEntry"
33#define UnityLauncherAPI_DBUS_SIGNAL    "Update"
34
35static char *GetDBUSObjectPath(void)
36{
37    char *app_id = SDL_strdup(SDL_GetAppID());
38
39    if (!app_id) {
40        return NULL;
41    }
42
43    // Sanitize exe_name to make it a legal D-Bus path element
44    for (char *p = app_id; *p; ++p) {
45        if (!SDL_isalnum(*p)) {
46            *p = '_';
47        }
48    }
49
50    // Ensure it starts with a letter or underscore
51    if (!SDL_isalpha(app_id[0]) && app_id[0] != '_') {
52        app_id = SDL_realloc(app_id, SDL_strlen(app_id) + 2);
53        if (!app_id) {
54            return NULL;
55        }
56        SDL_memmove(app_id + 1, app_id, SDL_strlen(app_id) + 1);
57        app_id[0] = '_';
58    }
59
60    // Create full path
61    char *path;
62    if (SDL_asprintf(&path, "/org/libsdl/%s_%d", app_id, getpid()) < 0) {
63        path = NULL;
64    }
65
66    SDL_free(app_id);
67
68    return path;
69}
70
71static char *GetAppDesktopPath(void)
72{
73    const char *desktop_suffix = ".desktop";
74    const char *app_id = SDL_GetAppID();
75    const size_t desktop_path_total_length = SDL_strlen(app_id) + SDL_strlen(desktop_suffix) + 1;
76    char *desktop_path = (char *)SDL_malloc(desktop_path_total_length);
77    if (!desktop_path) {
78        return NULL;
79    }
80    *desktop_path = '\0';
81    SDL_strlcat(desktop_path, app_id, desktop_path_total_length);
82    SDL_strlcat(desktop_path, desktop_suffix, desktop_path_total_length);
83
84    return desktop_path;
85}
86
87static int ShouldShowProgress(SDL_ProgressState progressState)
88{
89    if (progressState == SDL_PROGRESS_STATE_INVALID ||
90        progressState == SDL_PROGRESS_STATE_NONE) {
91        return 0;
92    }
93
94    // Unity LauncherAPI only supports "normal" display of progress
95    return 1;
96}
97
98bool DBUS_ApplyWindowProgress(SDL_VideoDevice *_this, SDL_Window *window)
99{
100    // Signal signature:
101    // signal com.canonical.Unity.LauncherEntry.Update (in s app_uri, in a{sv} properties)
102
103    SDL_DBusContext *dbus = SDL_DBus_GetContext();
104
105    if (!dbus || !dbus->session_conn) {
106        return false;
107    }
108
109    char *objectPath = GetDBUSObjectPath();
110    if (!objectPath) {
111        return false;
112    }
113
114    DBusMessage *msg = dbus->message_new_signal(objectPath, UnityLauncherAPI_DBUS_INTERFACE, UnityLauncherAPI_DBUS_SIGNAL);
115    if (!msg) {
116        SDL_free(objectPath);
117        return false;
118    }
119
120    char *desktop_path = GetAppDesktopPath();
121    if (!desktop_path) {
122        dbus->message_unref(msg);
123        SDL_free(objectPath);
124        return false;
125    }
126
127    const char *progress_visible_str = "progress-visible";
128    const char *progress_str = "progress";
129
130    const int progress_visible = ShouldShowProgress(window->progress_state);
131    double progress = (double)window->progress_value;
132
133    DBusMessageIter args, props;
134    dbus->message_iter_init_append(msg, &args);
135    dbus->message_iter_append_basic(&args, DBUS_TYPE_STRING, &desktop_path);   // Setup app_uri paramter
136    dbus->message_iter_open_container(&args, DBUS_TYPE_ARRAY, "{sv}", &props); // Setup properties parameter
137    DBusMessageIter key_it, value_it;
138    // Set progress visible property
139    dbus->message_iter_open_container(&props, DBUS_TYPE_DICT_ENTRY, NULL, &key_it);
140    dbus->message_iter_append_basic(&key_it, DBUS_TYPE_STRING, &progress_visible_str); // Append progress-visible key data
141    dbus->message_iter_open_container(&key_it, DBUS_TYPE_VARIANT, "b", &value_it);
142    dbus->message_iter_append_basic(&value_it, DBUS_TYPE_BOOLEAN, &progress_visible); // Append progress-visible value data
143    dbus->message_iter_close_container(&key_it, &value_it);
144    dbus->message_iter_close_container(&props, &key_it);
145    // Set progress value property
146    dbus->message_iter_open_container(&props, DBUS_TYPE_DICT_ENTRY, NULL, &key_it);
147    dbus->message_iter_append_basic(&key_it, DBUS_TYPE_STRING, &progress_str); // Append progress key data
148    dbus->message_iter_open_container(&key_it, DBUS_TYPE_VARIANT, "d", &value_it);
149    dbus->message_iter_append_basic(&value_it, DBUS_TYPE_DOUBLE, &progress); // Append progress value data
150    dbus->message_iter_close_container(&key_it, &value_it);
151    dbus->message_iter_close_container(&props, &key_it);
152    dbus->message_iter_close_container(&args, &props);
153
154    dbus->connection_send(dbus->session_conn, msg, NULL);
155
156    SDL_free(desktop_path);
157    dbus->message_unref(msg);
158    SDL_free(objectPath);
159
160    return true;
161}
162
163#endif // SDL_USE_LIBDBUS
164
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