1 files changed, 101 insertions, 0 deletions
diff --git a/src/detection/cursor/cursor_linux.c b/src/detection/cursor/cursor_linux.c
new file mode 100644
index 0000000..89dabbc
--- /dev/null
+++ b/src/detection/cursor/cursor_linux.c
@@ -0,0 +1,101 @@
+#include "cursor.h"
+
+#include "detection/gtk_qt/gtk_qt.h"
+#include "detection/displayserver/displayserver.h"
+#include "common/properties.h"
+#include "common/parsing.h"
+#include "common/settings.h"
+#include "common/strutil.h"
+
+#include <stdlib.h>
+
+static bool detectCursorGTK(FFCursorResult* result) {
+    const FFGTKResult* gtk = ffDetectGTK4();
+
+    if (gtk->cursor.length == 0) {
+        gtk = ffDetectGTK3();
+    }
+
+    if (gtk->cursor.length == 0) {
+        gtk = ffDetectGTK2();
+    }
+
+    if (gtk->cursor.length == 0) {
+        return false;
+    }
+
+    ffStrbufAppend(&result->theme, &gtk->cursor);
+    ffStrbufAppend(&result->size, &gtk->cursorSize);
+    return true;
+}
+
+static void detectCursorFromConfigFile(const char* relativeFilePath, const char* themeStart, const char* themeDefault, const char* sizeStart, const char* sizeDefault, FFCursorResult* result) {
+    if (ffParsePropFileConfigValues(relativeFilePath, 2, (FFpropquery[]) { { themeStart, &result->theme }, { sizeStart, &result->size } })) {
+        if (result->theme.length == 0) {
+            ffStrbufAppendS(&result->theme, themeDefault);
+        }
+
+        if (result->size.length == 0) {
+            ffStrbufAppendS(&result->size, sizeDefault);
+        }
+    }
+
+    if (result->theme.length == 0) {
+        ffStrbufAppendF(&result->error, "Couldn't find cursor in %s", relativeFilePath);
+    }
+}
+
+static bool detectCursorFromXResources(FFCursorResult* result) {
+    ffParsePropFileHomeValues(".Xresources", 2, (FFpropquery[]) { { "Xcursor.theme :", &result->theme }, { "Xcursor.size :", &result->size } });
+
+    return result->theme.length > 0;
+}
+
+static bool detectCursorFromEnv(FFCursorResult* result) {
+    const char* xcursor_theme = getenv("XCURSOR_THEME");
+
+    if (!ffStrSet(xcursor_theme)) {
+        return false;
+    }
+
+    ffStrbufAppendS(&result->theme, xcursor_theme);
+    ffStrbufAppendS(&result->size, getenv("XCURSOR_SIZE"));
+
+    return true;
+}
+
+static bool detectCursorHyprcursor(FFCursorResult* result) {
+    const char* hyprcursor_theme = getenv("HYPRCURSOR_THEME");
+
+    if (!ffStrSet(hyprcursor_theme)) {
+        return false;
+    }
+
+    ffStrbufAppendS(&result->theme, hyprcursor_theme);
+    ffStrbufAppendS(&result->size, getenv("HYPRCURSOR_SIZE"));
+
+    return true;
+}
+
+void ffDetectCursor(FFCursorResult* result) {
+    const FFDisplayServerResult* wmde = ffConnectDisplayServer();
+
+    if (ffStrbufEqualS(&wmde->wmPrettyName, FF_WM_PRETTY_WSLG)) {
+        ffStrbufAppendS(&result->error, "WSLg uses native windows cursor");
+    } else if (ffStrbufIgnCaseEqualS(&wmde->wmProtocolName, FF_WM_PROTOCOL_TTY)) {
+        ffStrbufAppendS(&result->error, "Cursor isn't supported in TTY");
+    } else if (ffStrbufIgnCaseEqualS(&wmde->dePrettyName, FF_DE_PRETTY_PLASMA)) {
+        detectCursorFromConfigFile("kcminputrc", "cursorTheme =", "Breeze", "cursorSize =", "24", result);
+    } else if (ffStrbufIgnCaseEqualS(&wmde->dePrettyName, FF_DE_PRETTY_LXQT)) {
+        detectCursorFromConfigFile("lxqt/session.conf", "cursor_theme =", "Adwaita", "cursor_size =", "24", result);
+    } else if (ffStrbufIgnCaseEqualS(&wmde->wmPrettyName, FF_WM_PRETTY_HYPRLAND) && detectCursorHyprcursor(result)) {
+        return;
+    } else if (
+        !detectCursorGTK(result) &&
+        !detectCursorFromEnv(result) &&
+        !ffParsePropFileHome(".icons/default/index.theme", "Inherits =", &result->theme) &&
+        !detectCursorFromXResources(result) &&
+        !ffParsePropFileData("icons/default/index.theme", "Inherits =", &result->theme)) {
+        ffStrbufAppendS(&result->error, "Couldn't find cursor");
+    }
+}