feat: add fullscreen VM display mode for Windows

src/manager/CMakeLists.txt

@@ -15,6 +15,9 @@ add_executable(tenbox-manager WIN32
     ${CMAKE_SOURCE_DIR}/src/manager/ui/llm_proxy_dialog.cpp
     ${CMAKE_SOURCE_DIR}/src/manager/ui/settings_dialog.cpp
     ${CMAKE_SOURCE_DIR}/src/manager/ui/win32_display_panel.cpp
+    ${CMAKE_SOURCE_DIR}/src/manager/ui/win32_fullscreen_window.cpp
+    ${CMAKE_SOURCE_DIR}/src/manager/ui/win32_floating_toolbar.cpp
+    ${CMAKE_SOURCE_DIR}/src/manager/ui/win32_fullscreen_osd.cpp
     ${CMAKE_SOURCE_DIR}/src/manager/ui/info_tab.cpp
     ${CMAKE_SOURCE_DIR}/src/manager/ui/console_tab.cpp
     ${CMAKE_SOURCE_DIR}/src/manager/ui/vm_listview.cpp

src/manager/app_settings.cpp

@@ -109,6 +109,15 @@ AppSettings LoadSettings(const std::string& data_dir) {
             if (w.contains("width"))  s.window.width  = w["width"].get<int>();
             if (w.contains("height")) s.window.height = w["height"].get<int>();
         }
+        if (j.contains("fullscreen_toolbar") && j["fullscreen_toolbar"].is_object()) {
+            auto& ft = j["fullscreen_toolbar"];
+            if (ft.contains("snap_edge")) s.fullscreen_toolbar.snap_edge = ft["snap_edge"].get<int>();
+            if (ft.contains("offset"))    s.fullscreen_toolbar.offset = ft["offset"].get<int>();
+            if (ft.contains("pinned"))    s.fullscreen_toolbar.pinned = ft["pinned"].get<bool>();
+        }
+        if (j.contains("fullscreen_monitor_index") && j["fullscreen_monitor_index"].is_number()) {
+            s.fullscreen_monitor_index = j["fullscreen_monitor_index"].get<int>();
+        }
         if (j.contains("show_toolbar") && j["show_toolbar"].is_boolean()) {
             s.show_toolbar = j["show_toolbar"].get<bool>();
         }
@@ -199,6 +208,14 @@ void SaveSettings(const std::string& data_dir, const AppSettings& s) {
     j["window"]           = w;
     j["show_toolbar"]     = s.show_toolbar;
     j["close_to_tray"]    = s.close_to_tray;
+    {
+        json ft;
+        ft["snap_edge"] = s.fullscreen_toolbar.snap_edge;
+        ft["offset"]    = s.fullscreen_toolbar.offset;
+        ft["pinned"]    = s.fullscreen_toolbar.pinned;
+        j["fullscreen_toolbar"] = ft;
+    }
+    j["fullscreen_monitor_index"] = s.fullscreen_monitor_index;
     j["vm_paths"]         = vm_paths_json;
     if (!s.vm_storage_dir.empty())
         j["vm_storage_dir"] = s.vm_storage_dir;

src/manager/app_settings.h

@@ -19,6 +19,12 @@ struct WindowGeometry {
     int width = 1024, height = 680;
 };
 
+struct FullscreenToolbarState {
+    int snap_edge = 0;    // 0=top, 1=bottom, 2=left, 3=right
+    int offset = -1;       // pixel offset along edge, -1 = centered
+    bool pinned = false;
+};
+
 enum class LlmApiType : uint8_t {
     kOpenAiCompletions = 0,  // POST /v1/chat/completions
     // Future:
@@ -41,6 +47,8 @@ struct LlmProxySettings {
 
 struct AppSettings {
     WindowGeometry window;
+    FullscreenToolbarState fullscreen_toolbar;
+    int fullscreen_monitor_index = 0;  // last monitor used for fullscreen
     std::vector<std::string> vm_paths;
     bool show_toolbar = true;
     bool close_to_tray = true;      // X button hides to system tray instead of quitting

src/manager/i18n.cpp

@@ -95,6 +95,15 @@ static const std::unordered_map<S, const char*> kStringsEn = {
     {S::kCpuMemoryChangeWarning, "CPU / Memory changes require VM to be stopped"},
     {S::kDisplayHintCaptured, "Full input capture (system keys) | Press Right Alt to release"},
     {S::kDisplayHintNormal, "Click to capture system keys"},
+    {S::kMenuFullscreen, "&Fullscreen"},
+    {S::kToolbarFullscreen, "Fullscreen"},
+    {S::kFullscreenExit, "Exit Fullscreen"},
+    {S::kFullscreenPin, "Pin"},
+    {S::kFullscreenUnpin, "Unpin"},
+    {S::kFullscreenDpiZoom, "Zoom"},
+    {S::kFullscreenSwitchVm, "Switch VM"},
+    {S::kFullscreenMoveToMonitor, "Move to Monitor"},
+    {S::kFullscreenFindToolbar, "Find toolbar at top center of screen"},
     {S::kMenuView, "View"},
     {S::kMenuViewToolbar, "Toolbar"},
     {S::kMenuHelp, "Help"},
@@ -355,6 +364,15 @@ static const std::unordered_map<S, const char*> kStringsZhCN = {
     {S::kCpuMemoryChangeWarning, "更改 CPU/内存需要先停止虚拟机"},
     {S::kDisplayHintCaptured, "已捕获全部输入（含系统键）| 按右 Alt 释放"},
     {S::kDisplayHintNormal, "点击以捕获系统键"},
+    {S::kMenuFullscreen, "全屏(&F)"},
+    {S::kToolbarFullscreen, "全屏"},
+    {S::kFullscreenExit, "退出全屏"},
+    {S::kFullscreenPin, "固定"},
+    {S::kFullscreenUnpin, "取消固定"},
+    {S::kFullscreenDpiZoom, "缩放"},
+    {S::kFullscreenSwitchVm, "切换虚拟机"},
+    {S::kFullscreenMoveToMonitor, "移动到显示器"},
+    {S::kFullscreenFindToolbar, "可在屏幕顶部中间找回工具栏"},
     {S::kMenuView, "视图"},
     {S::kMenuViewToolbar, "工具栏"},
     {S::kMenuHelp, "帮助"},

src/manager/i18n.h

@@ -325,6 +325,17 @@ enum class S {
     kTrayHide,
     kSettingsCloseToTray,
 
+    // Fullscreen
+    kMenuFullscreen,
+    kToolbarFullscreen,
+    kFullscreenExit,
+    kFullscreenPin,
+    kFullscreenUnpin,
+    kFullscreenDpiZoom,
+    kFullscreenSwitchVm,
+    kFullscreenMoveToMonitor,
+    kFullscreenFindToolbar,
+
     kCount  // Must be last
 };
 

src/manager/resource.h

@@ -15,3 +15,10 @@
 #define IDB_TOOLBAR_PORT_FORWARDS  109
 #define IDB_TOOLBAR_DPI_ZOOM       110
 #define IDB_TOOLBAR_LLM_PROXY      111
+#define IDB_TOOLBAR_FULLSCREEN     112
+#define IDB_FS_EXIT                113
+#define IDB_FS_PIN                 114
+#define IDB_FS_UNPIN               115
+#define IDB_FS_ZOOM                116
+#define IDB_FS_ZOOM_ACTIVE         117
+#define IDB_TOOLBAR_FULLSCREEN_EXIT 118

src/manager/toolbar.rc

@@ -18,6 +18,13 @@ IDB_TOOLBAR_SHARED_FOLDERS  BITMAP "resources/shared_folders.bmp"
 IDB_TOOLBAR_PORT_FORWARDS   BITMAP "resources/port_forwards.bmp"
 IDB_TOOLBAR_DPI_ZOOM        BITMAP "resources/dpi_zoom.bmp"
 IDB_TOOLBAR_LLM_PROXY       BITMAP "resources/llm_proxy.bmp"
+IDB_TOOLBAR_FULLSCREEN      BITMAP "resources/fullscreen.bmp"
+IDB_FS_EXIT                 BITMAP "resources/fs_exit.bmp"
+IDB_FS_PIN                  BITMAP "resources/fs_pin.bmp"
+IDB_FS_UNPIN                BITMAP "resources/fs_unpin.bmp"
+IDB_FS_ZOOM                 BITMAP "resources/fs_zoom.bmp"
+IDB_FS_ZOOM_ACTIVE          BITMAP "resources/fs_zoom_active.bmp"
+IDB_TOOLBAR_FULLSCREEN_EXIT BITMAP "resources/fullscreen_exit.bmp"
 
 // Version information
 VS_VERSION_INFO VERSIONINFO

src/manager/ui/win32_display_panel.cpp

@@ -5,6 +5,8 @@
 #include <algorithm>
 #include <cstring>
 
+extern HWND g_main_hwnd;
+
 static const wchar_t* kDisplayPanelClass = L"TenBoxDisplayPanel";
 static bool g_class_registered = false;
 
@@ -237,6 +239,14 @@ void DisplayPanel::SetVisible(bool visible) {
     if (hwnd_) ShowWindow(hwnd_, visible ? SW_SHOW : SW_HIDE);
 }
 
+void DisplayPanel::Reparent(HWND new_parent) {
+    if (!hwnd_) return;
+    SetParent(hwnd_, new_parent);
+    RECT rc;
+    GetClientRect(new_parent, &rc);
+    SetBounds(0, 0, rc.right, rc.bottom);
+}
+
 void DisplayPanel::CalcDisplayRect(int cw, int ch, RECT* out) const {
     if (fb_width_ == 0 || fb_height_ == 0 || cw <= 0 || ch <= 0) {
         *out = {0, 0, cw, ch};
@@ -334,7 +344,7 @@ void DisplayPanel::OnPaint() {
         int pill_w = text_sz.cx + pad_x * 2;
         int pill_h = text_sz.cy + pad_y * 2;
         int pill_x = (rc.right - pill_w) / 2;
-        int pill_y = 6;
+        int pill_y = 6 + hint_offset_y_;
 
         RECT pill_rc = {pill_x, pill_y, pill_x + pill_w, pill_y + pill_h};
         HBRUSH bg_brush = CreateSolidBrush(RGB(48, 48, 48));
@@ -484,6 +494,7 @@ void DisplayPanel::SetCaptured(bool captured) {
             if (hwnd_) SetTimer(hwnd_, kHintTimerId, kHintDurationMs, nullptr);
         }
     } else {
+        ReleaseAllModifiers();
         UninstallKeyboardHook();
         capture_hint_visible_ = false;
         if (hwnd_) KillTimer(hwnd_, kHintTimerId);
@@ -522,19 +533,24 @@ LRESULT CALLBACK DisplayPanel::LowLevelKeyboardProc(int nCode, WPARAM wp, LPARAM
             return 1;
         }
 
-        // Distinguish left/right modifiers
+        // Distinguish left/right modifiers for evdev mapping
         if (vk == VK_CONTROL) vk = extended ? VK_RCONTROL : VK_LCONTROL;
         if (vk == VK_MENU)    vk = extended ? VK_RMENU : VK_LMENU;
         if (vk == VK_SHIFT) {
             vk = (kb->scanCode == 0x36) ? VK_RSHIFT : VK_LSHIFT;
         }
 
+        // Forward to guest
         uint32_t evdev = VkToEvdev(vk);
         if (evdev && g_captured_panel->key_cb_) {
             g_captured_panel->key_cb_(evdev, pressed);
         }
 
-        // Swallow the key so the host OS does not act on it
+        // ESC passes through for long-press exit; everything else swallowed
+        if (vk == VK_ESCAPE) {
+            return CallNextHookEx(nullptr, nCode, wp, lp);
+        }
+
         return 1;
     }
     return CallNextHookEx(nullptr, nCode, wp, lp);
@@ -574,6 +590,19 @@ LRESULT CALLBACK DisplayPanel::WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp
     case WM_MBUTTONUP:
     case WM_MOUSEMOVE:
         self->HandleMouse(msg, wp, lp);
+        // Request WM_MOUSELEAVE to detect mouse exiting the window
+        {
+            TRACKMOUSEEVENT tme{ sizeof(tme), TME_LEAVE, hwnd };
+            TrackMouseEvent(&tme);
+        }
+        return 0;
+
+    case WM_MOUSELEAVE:
+        // Mouse left the panel — release all held buttons to prevent stuck state
+        if (self && self->mouse_buttons_ != 0) {
+            self->mouse_buttons_ = 0;
+            if (self->pointer_cb_) self->pointer_cb_(self->last_abs_x_, self->last_abs_y_, 0);
+        }
         return 0;
 
     case WM_MOUSEWHEEL:
@@ -584,6 +613,7 @@ LRESULT CALLBACK DisplayPanel::WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp
         return 0;
 
     case WM_KILLFOCUS:
+        self->ReleaseAllModifiers();
         self->SetCaptured(false);
         self->mouse_buttons_ = 0;
         return 0;

src/manager/ui/win32_display_panel.h

@@ -7,6 +7,11 @@
 #include <string>
 #include <vector>
 
+// Custom messages posted from keyboard hook for fullscreen controls
+#define WM_FS_TOGGLE    (WM_APP + 10)
+#define WM_FS_SWITCH_VM (WM_APP + 11)
+#define WM_FS_SHOW_HINT (WM_APP + 12)
+
 #define NOMINMAX
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
@@ -53,6 +58,11 @@ class DisplayPanel {
     // Move/resize the window.
     void SetBounds(int x, int y, int w, int h);
 
+    // Reparent to a new parent window. Adjusts style bits and fills parent client area.
+    void Reparent(HWND new_parent);
+    void SetHintOffsetY(int offset) { hint_offset_y_ = offset; }
+    void SetFullscreenMode(bool fs) { in_fullscreen_mode_ = fs; }
+
     HWND Handle() const { return hwnd_; }
     void SetVisible(bool visible);
 
@@ -101,6 +111,10 @@ class DisplayPanel {
     HCURSOR custom_cursor_ = nullptr;
 
     float dpi_zoom_factor_ = 1.0f;
+    int hint_offset_y_ = 0;
+    bool in_fullscreen_mode_ = false;
+    DWORD64 esc_press_tick_ = 0;
+    UINT_PTR esc_exit_timer_ = 0;
 
     KeyEventCallback key_cb_;
     PointerEventCallback pointer_cb_;