Add the files

1 files changed, 63 insertions, 0 deletions

diff --git a/src/detection/font/font_windows.c b/src/detection/font/font_windows.c
new file mode 100644
index 0000000..4fc28d3
--- /dev/null
+++ b/src/detection/font/font_windows.c
@@ -0,0 +1,63 @@
+#include "font.h"
+#include "common/windows/unicode.h"
+#include "common/windows/registry.h"
+
+#include <windows.h>
+
+static void generateString(FFFontResult* font) {
+    const char* types[] = { "Caption", "Menu", "Message", "Status" };
+    for (uint32_t i = 0; i < ARRAY_SIZE(types); ++i) {
+        if (i == 0 || !ffStrbufEqual(&font->fonts[i - 1], &font->fonts[i])) {
+            if (i > 0) {
+                ffStrbufAppendS(&font->display, "], ");
+            }
+            ffStrbufAppendF(&font->display, "%s [%s", font->fonts[i].chars, types[i]);
+        } else {
+            ffStrbufAppendS(&font->display, " / ");
+            ffStrbufAppendS(&font->display, types[i]);
+        }
+    }
+    ffStrbufAppendC(&font->display, ']');
+}
+
+const char* ffDetectFontImpl(FFFontResult* result) {
+    FF_AUTO_CLOSE_FD HANDLE hKey = NULL;
+    if (!ffRegOpenKeyForRead(HKEY_CURRENT_USER, L"Control Panel\\Desktop\\WindowMetrics", &hKey, NULL)) {
+        return "ffRegOpenKeyForRead(HKEY_CURRENT_USER\\Control Panel\\Desktop\\WindowMetrics) failed";
+    }
+
+    LOGFONTW fonts[4];
+    FFArgBuffer fontBuffers[4] = {
+        { .data = &fonts[0], .length = sizeof(fonts[0]) },
+        { .data = &fonts[1], .length = sizeof(fonts[1]) },
+        { .data = &fonts[2], .length = sizeof(fonts[2]) },
+        { .data = &fonts[3], .length = sizeof(fonts[3]) },
+    };
+
+    if (!ffRegReadValues(hKey, 4, (FFRegValueArg[]) {
+                                      FF_ARG(fontBuffers[0], L"CaptionFont"),
+                                      FF_ARG(fontBuffers[1], L"MenuFont"),
+                                      FF_ARG(fontBuffers[2], L"MessageFont"),
+                                      FF_ARG(fontBuffers[3], L"StatusFont"),
+                                  },
+            NULL)) {
+        return "ffRegReadValues(HKEY_CURRENT_USER\\Control Panel\\Desktop\\WindowMetrics) failed";
+    }
+
+    for (uint32_t i = 0; i < ARRAY_SIZE(fonts); ++i) {
+        if (fontBuffers[i].length != sizeof(LOGFONTW)) {
+            continue; // Invalid data, skip
+        }
+
+        LOGFONTW* logFont = &fonts[i];
+
+        ffStrbufSetWS(&result->fonts[i], logFont->lfFaceName);
+        if (logFont->lfHeight < 0) {
+            ffStrbufAppendF(&result->fonts[i], " (%dpt)", (int) -logFont->lfHeight);
+        }
+    }
+
+    generateString(result);
+
+    return NULL;
+}