fix(bridge): real-input dance dat window tai cursor thay vi goc work-area - het GUI floating ngoai cua so DAW khi click vao embed (iZotope/JUCE reject PostMessage)

native_bridge/src/FxGuiServer.cpp

@@ -254,14 +254,22 @@ uint64_t frameHash(HWND hwnd) {
     return h;
 }
 
-void danceStart(HWND hwnd) {
+void danceStart(HWND hwnd, HWND target, int x, int y) {
     if (g_dance) return;
-    RECT wa = {0}, wr = {0};
-    SystemParametersInfoA(SPI_GETWORKAREA, 0, &wa, 0);
+    // Dat window ngay tai vi tri cursor (dang nam tren panel embed trong DAW)
+    // chu khong nhay ra goc man hinh: shift window sao cho client point (x,y)
+    // cua editor trung voi screen point dang click -> GUI xuat hien dung cho
+    // panel, khong con floating ngoai cua so DAW.
+    POINT pt = { x, y };
+    ClientToScreen(target, &pt);   // screen cua diem click (window con offscreen)
+    POINT cur;
+    GetCursorPos(&cur);
+    RECT wr = {0};
     GetWindowRect(hwnd, &wr);
-    const int w = wr.right - wr.left, h = wr.bottom - wr.top;
+    const int nx = wr.left + (cur.x - pt.x);
+    const int ny = wr.top + (cur.y - pt.y);
     GetCursorPos(&g_savedCursor);
-    SetWindowPos(hwnd, HWND_TOPMOST, wa.right - w, wa.bottom - h, 0, 0,
+    SetWindowPos(hwnd, HWND_TOPMOST, nx, ny, 0, 0,
                  SWP_NOSIZE | SWP_SHOWWINDOW);
     Sleep(60);  // let the compositor repaint so the editor sees itself active
     g_dance = true;
@@ -334,7 +342,7 @@ void relayInput(HWND hwnd, const json_object_s* o) {
 
     if (g_realInput && (isDown || isUp || type == "mousemove" || type == "wheel")) {
         if (isDown) {
-            danceStart(hwnd);
+            danceStart(hwnd, target, x, y);
             POINT pt = { x, y };
             if (!outside) ClientToScreen(target, &pt);
             realClick(pt.x, pt.y, true, button);
@@ -355,7 +363,7 @@ void relayInput(HWND hwnd, const json_object_s* o) {
                 danceEnd(hwnd);
             }
         } else if (type == "wheel") {
-            danceStart(hwnd);
+            danceStart(hwnd, target, x, y);
             POINT pt = { x, y };
             if (!outside) ClientToScreen(target, &pt);
             SetCursorPos(pt.x, pt.y);