Allow window dragging by ALT+WIN combination

Console command center_screen that centers game window on execute
Dropped support for -draw_borders command line key

Author: Xottab-DUTY

src/xrEngine/Device_Initialize.cpp

@@ -8,6 +8,8 @@
 #include "PerformanceAlert.hpp"
 #include "xrCore/ModuleLookup.hpp"
 
+SDL_HitTestResult WindowHitTest(SDL_Window* win, const SDL_Point* area, void* data);
+
 void CRenderDevice::initialize_weather_editor()
 {
     m_editor_module = XRay::LoadModule("xrWeatherEditor");
@@ -43,14 +45,14 @@ void CRenderDevice::Initialize()
 
     if (!m_sdlWnd)
     {
-        Uint32 flags = SDL_WINDOW_BORDERLESS | SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL;
-#if SDL_VERSION_ATLEAST(2, 0, 5)
-        flags |= SDL_WINDOW_ALWAYS_ON_TOP;
-#endif
+        const Uint32 flags = SDL_WINDOW_BORDERLESS | SDL_WINDOW_HIDDEN |
+            SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALWAYS_ON_TOP | SDL_WINDOW_OPENGL;
 
-        m_sdlWnd = SDL_CreateWindow("S.T.A.L.K.E.R.: Call of Pripyat", 0, 0, 0, 0, flags);
+        m_sdlWnd = SDL_CreateWindow("S.T.A.L.K.E.R.: Call of Pripyat", 0, 0, 256, 192, flags);
 
         R_ASSERT3(m_sdlWnd, "Unable to create SDL window", SDL_GetError());
+        SDL_SetWindowHitTest(m_sdlWnd, WindowHitTest, nullptr);
+        SDL_SetWindowMinimumSize(m_sdlWnd, 256, 192);
     }
 }
 
@@ -62,3 +64,51 @@ void CRenderDevice::DumpStatistics(IGameFont& font, IPerformanceAlert* alert)
     if (alert && stats.fFPS < 30)
         alert->Print(font, "FPS       < 30:   %3.1f", stats.fFPS);
 }
+
+SDL_HitTestResult WindowHitTest(SDL_Window* /*window*/, const SDL_Point* area, void* /*data*/)
+{
+    const auto& rect = Device.m_rcWindowClient;
+
+    // size of additional interactive area (in pixels)
+    constexpr int hit = 15;
+
+    const bool leftSide = area->x < rect.x + hit;
+    const bool topSide = area->y < rect.y + hit;
+    const bool bottomSide = area->y > rect.h - hit;
+    const bool rightSide = area->x > rect.w - hit;
+
+    if (leftSide && topSide)
+        return SDL_HITTEST_RESIZE_TOPLEFT;
+
+    if (rightSide && topSide)
+        return SDL_HITTEST_RESIZE_TOPRIGHT;
+
+    if (rightSide && bottomSide)
+        return SDL_HITTEST_RESIZE_BOTTOMRIGHT;
+
+    if (leftSide && bottomSide)
+        return SDL_HITTEST_RESIZE_BOTTOMLEFT;
+
+    if (topSide)
+        return SDL_HITTEST_RESIZE_TOP;
+
+    if (rightSide)
+        return SDL_HITTEST_RESIZE_RIGHT;
+
+    if (bottomSide)
+        return SDL_HITTEST_RESIZE_BOTTOM;
+
+    if (leftSide)
+        return SDL_HITTEST_RESIZE_LEFT;
+
+    const int centerX = rect.w / 2;
+    const int centerY = rect.h / 2;
+
+    // Allow drag from any point except window center
+    // For this case, 'hit' is a size of a square in the center
+    if ((area->x > centerX + hit || area->x < centerX - hit)
+        && (area->y > centerY + hit || area->y < centerY - hit))
+        return SDL_HITTEST_DRAGGABLE;
+
+    return SDL_HITTEST_NORMAL;
+}

src/xrEngine/Device_create.cpp

@@ -58,7 +58,6 @@ void CRenderDevice::Create()
         psDeviceFlags.set(rsFullscreen, false);
 
     FillVidModesToken(Vid_SelectedMonitor);
-    SelectResolution(!psDeviceFlags.is(rsFullscreen));
     UpdateWindowProps(!psDeviceFlags.is(rsFullscreen));
     GEnv.Render->Create(m_sdlWnd, dwWidth, dwHeight, fWidth_2, fHeight_2);
 
@@ -73,49 +72,20 @@ void CRenderDevice::Create()
     PreCache(0, false, false);
 }
 
-void CRenderDevice::UpdateWindowProps(bool windowed)
+void CRenderDevice::UpdateWindowProps(const bool windowed)
 {
     SelectResolution(windowed);
 
     SDL_SetWindowFullscreen(m_sdlWnd, windowed ? 0 : SDL_WINDOW_FULLSCREEN);
-    SDL_Rect rect;
 
     // Set window properties depending on what mode were in.
     if (windowed)
-    {
-        const bool drawBorders = strstr(Core.Params, "-draw_borders");
-        if (drawBorders)
-            SDL_SetWindowBordered(m_sdlWnd, SDL_TRUE);
-
         SDL_SetWindowSize(m_sdlWnd, psCurrentVidMode[0], psCurrentVidMode[1]);
-
-        if (GEnv.isDedicatedServer || strstr(Core.Params, "-center_screen"))
-            SDL_SetWindowPosition(m_sdlWnd, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
-        else
-        {
-            SDL_GetDisplayUsableBounds(Vid_SelectedMonitor, &rect);
-
-            int top = 0, left = 0, right = 0, bottom = 0;
-            // SDL_GetWindowBordersSize(m_sdlWnd, &top, &left, &bottom, &right);
-#ifdef WINDOWS
-            // XXX: Currently SDL_GetWindowBordersSize is supported only on X11
-            // For now we must use method below.
-            if (drawBorders)
-                top = GetSystemMetrics(SM_CYCAPTION); // size of the window title bar
-#else
-#pragma TODO("Implement for other platforms")
-#endif
-            SDL_SetWindowPosition(m_sdlWnd, rect.x + left, rect.y + top);
-        }
-
-        SDL_GetWindowPosition(m_sdlWnd, &m_rcWindowClient.x, &m_rcWindowClient.y);
-        int w = 0, h = 0;
-        SDL_GetWindowSize(m_sdlWnd, &w, &h);
-        m_rcWindowClient.w = m_rcWindowClient.x + w;
-        m_rcWindowClient.h = m_rcWindowClient.y + h;
-    }
     else
     {
+        // XXX: fix monitor selection
+        // it appears to be buggy
+        SDL_Rect rect;
         SDL_GetDisplayBounds(Vid_SelectedMonitor, &rect);
         SDL_SetWindowPosition(m_sdlWnd, rect.x, rect.y);
         SDL_DisplayMode mode;
@@ -126,31 +96,35 @@ void CRenderDevice::UpdateWindowProps(bool windowed)
         SDL_SetWindowDisplayMode(m_sdlWnd, &mode);
     }
 
-    if (!GEnv.isDedicatedServer)
-        SDL_SetWindowGrab(m_sdlWnd, SDL_TRUE);
-
-    UpdateWindowRect();
+    UpdateWindowRects();
     SDL_FlushEvents(SDL_WINDOWEVENT, SDL_SYSWMEVENT);
 }
 
 
-void CRenderDevice::UpdateWindowRect()
+void CRenderDevice::UpdateWindowRects()
 {
-    SDL_GetWindowPosition(m_sdlWnd, &m_rcWindowClient.x, &m_rcWindowClient.y);
+    m_rcWindowClient.x = 0;
+    m_rcWindowClient.y = 0;
     SDL_GetWindowSize(m_sdlWnd, &m_rcWindowClient.w, &m_rcWindowClient.h);
-    m_rcWindowClient.w += m_rcWindowClient.x;
-    m_rcWindowClient.h += m_rcWindowClient.y;
+
+    SDL_GetWindowPosition(m_sdlWnd, &m_rcWindowBounds.x, &m_rcWindowBounds.y);
+    SDL_GetWindowSize(m_sdlWnd, &m_rcWindowBounds.w, &m_rcWindowBounds.h);
+    m_rcWindowBounds.w += m_rcWindowBounds.x;
+    m_rcWindowBounds.h += m_rcWindowBounds.y;
+
+    // Do we need code below?
+    int top, left, bottom, right;
+    SDL_GetWindowBordersSize(m_sdlWnd, &top, &left, &bottom, &right);
+    m_rcWindowBounds.x -= left;
+    m_rcWindowBounds.y -= top;
+    m_rcWindowBounds.w += right;
+    m_rcWindowBounds.h += bottom;
+    // XXX: check if we need this code when SDL_GetWindowBordersSize
+    // will be available for Windows
 }
 
-void CRenderDevice::SelectResolution(bool windowed)
+void CRenderDevice::SelectResolution(const bool windowed)
 {
-    if (GEnv.isDedicatedServer)
-    {
-        dwWidth = 640;
-        dwHeight = 480;
-        return;
-    }
-
     if (windowed)
     {
         dwWidth = psCurrentVidMode[0];
@@ -172,7 +146,7 @@ void CRenderDevice::SelectResolution(bool windowed)
             if (SDL_GetClosestDisplayMode(Vid_SelectedMonitor, &current, &closest))
                 xr_sprintf(buff, sizeof(buff), "vid_mode %dx%d", closest.w, closest.h);
             else
-                xr_sprintf(buff, sizeof(buff), "vid_mode %s", VidModesToken[0].name);
+                xr_sprintf(buff, sizeof(buff), "vid_mode %s", VidModesToken.back());
 
             Console->Execute(buff);
         }

src/xrEngine/device.cpp

@@ -348,7 +348,7 @@ void CRenderDevice::message_loop()
                 switch (event.window.event)
                 {
                 case SDL_WINDOWEVENT_MOVED:
-                    UpdateWindowRect();
+                    UpdateWindowRects();
                     break;
 
                 case SDL_WINDOWEVENT_RESIZED:
@@ -362,21 +362,19 @@ void CRenderDevice::message_loop()
                         Reset();
                     }
                     else
-                        UpdateWindowRect();
+                        UpdateWindowRects();
 
                     break;
                 }
 
                 case SDL_WINDOWEVENT_SHOWN:
-                case SDL_WINDOWEVENT_ENTER:
                 case SDL_WINDOWEVENT_FOCUS_GAINED:
                 case SDL_WINDOWEVENT_RESTORED:
                 case SDL_WINDOWEVENT_MAXIMIZED:
                     OnWM_Activate(1, event.window.data2);
                     break;
 
                 case SDL_WINDOWEVENT_HIDDEN:
-                case SDL_WINDOWEVENT_LEAVE:
                 case SDL_WINDOWEVENT_FOCUS_LOST:
                 case SDL_WINDOWEVENT_MINIMIZED:
                     OnWM_Activate(0, event.window.data2);
@@ -418,6 +416,9 @@ void CRenderDevice::Run()
     seqAppStart.Process();
     GEnv.Render->ClearTarget();
     splash::hide();
+    if (GEnv.isDedicatedServer)
+        SDL_SetWindowPosition(m_sdlWnd, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
+    SDL_HideWindow(m_sdlWnd);
     SDL_FlushEvents(SDL_WINDOWEVENT, SDL_SYSWMEVENT);
     SDL_ShowWindow(m_sdlWnd);
     SDL_RaiseWindow(m_sdlWnd);

src/xrEngine/device.h

@@ -62,6 +62,9 @@ class ENGINE_API CRenderDeviceData
     u32 dwWidth;
     u32 dwHeight;
 
+    // Real application window resolution
+    SDL_Rect m_rcWindowBounds;
+
     // Real game window resolution
     SDL_Rect m_rcWindowClient;
 
@@ -248,9 +251,9 @@ class ENGINE_API CRenderDevice : public CRenderDeviceBase
     void Destroy(void);
     void Reset(bool precache = true);
 
-    void UpdateWindowProps(bool windowed);
-    void UpdateWindowRect();
-    void SelectResolution(bool windowed);
+    void UpdateWindowProps(const bool windowed);
+    void UpdateWindowRects();
+    void SelectResolution(const bool windowed);
 
     void Initialize(void);
     void ShutDown(void);

src/xrEngine/xr_input.cpp

@@ -53,8 +53,6 @@ CInput::CInput(bool exclusive, int deviceForInit)
     //===================== Dummy pack
     iCapture(&dummyController);
 
-    SDL_SetRelativeMouseMode(SDL_TRUE);
-
     xrDebug::SetDialogHandler(on_error_dialog);
 
 #ifdef ENGINE_BUILD
@@ -66,7 +64,6 @@ CInput::CInput(bool exclusive, int deviceForInit)
 
 CInput::~CInput(void)
 {
-    SDL_SetRelativeMouseMode(SDL_FALSE);
 #ifdef ENGINE_BUILD
     Device.seqFrame.Remove(this);
     Device.seqAppDeactivate.Remove(this);
@@ -232,12 +229,12 @@ void CInput::ClipCursor(bool clip)
 {
     if (clip)
     {
-        SDL_ShowCursor(SDL_DISABLE);
+        SDL_SetWindowGrab(Device.m_sdlWnd, SDL_TRUE);
         SDL_SetRelativeMouseMode(SDL_TRUE);
     }
     else
     {
-        SDL_ShowCursor(SDL_ENABLE);
+        SDL_SetWindowGrab(Device.m_sdlWnd, SDL_FALSE);
         SDL_SetRelativeMouseMode(SDL_FALSE);
     }
 }

src/xrEngine/xr_ioc_cmd.cpp

@@ -657,6 +657,16 @@ class ENGINE_API CCC_HideConsole : public IConsole_Command
     virtual void Info(TInfo& I) { xr_sprintf(I, sizeof(I), "hide console"); }
 };
 
+class CCC_CenterScreen : public IConsole_Command
+{
+public:
+    CCC_CenterScreen(pcstr name) : IConsole_Command(name) { bEmptyArgsHandled = true; }
+    void Execute(pcstr args) override
+    {
+        SDL_SetWindowPosition(Device.m_sdlWnd, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
+    }
+};
+
 ENGINE_API float psHUD_FOV = 0.45f;
 
 // extern int psSkeletonUpdate;
@@ -787,6 +797,7 @@ void CCC_Register()
     CMD2(CCC_Float, "cam_inert", &psCamInert);
     CMD2(CCC_Float, "cam_slide_inert", &psCamSlideInert);
 
+    CMD1(CCC_CenterScreen, "center_screen");
     CMD4(CCC_Integer, "always_active", &ps_always_active, 0, 1);
 
     CMD1(CCC_r2, "renderer");

src/xrGame/MainMenu.cpp

@@ -36,6 +36,7 @@
 #include "profile_store.h"
 #include "stats_submitter.h"
 #include "atlas_submit_queue.h"
+#include "xrEngine/xr_input.h"
 
 // fwd. decl.
 extern ENGINE_API BOOL bShowPauseString;
@@ -335,6 +336,7 @@ void CMainMenu::IR_OnMouseMove(int x, int y)
 
 void CMainMenu::IR_OnMouseStop(int x, int y){};
 
+bool IWantMyMouseBackScreamed = false;
 void CMainMenu::IR_OnKeyboardPress(int dik)
 {
     if (!IsActive())
@@ -345,6 +347,14 @@ void CMainMenu::IR_OnKeyboardPress(int dik)
         Console->Show();
         return;
     }
+
+    if (pInput->iGetAsyncKeyState(SDL_SCANCODE_LALT) || pInput->iGetAsyncKeyState(SDL_SCANCODE_RALT)
+        && pInput->iGetAsyncKeyState(SDL_SCANCODE_LGUI) || pInput->iGetAsyncKeyState(SDL_SCANCODE_RGUI))
+    {
+        IWantMyMouseBackScreamed = true;
+        pInput->ClipCursor(false);
+    }
+
     if (SDL_SCANCODE_F12 == dik)
     {
         GEnv.Render->Screenshot();
@@ -359,6 +369,13 @@ void CMainMenu::IR_OnKeyboardRelease(int dik)
     if (!IsActive())
         return;
 
+    if (IWantMyMouseBackScreamed)
+    {
+        IWantMyMouseBackScreamed = false;
+        pInput->ClipCursor(true);
+    }
+
+
     CDialogHolder::IR_UIOnKeyboardRelease(dik);
 };
 

src/xrGame/UICursor.cpp

@@ -63,7 +63,7 @@ void CUICursor::InitInternal()
     const u32 screen_size_y = display.h - display.y;
     m_b_use_win_cursor = screen_size_y >= Device.dwHeight && screen_size_x >= Device.dwWidth;
     if (m_b_use_win_cursor) // sanity
-        Device.UpdateWindowRect();
+        Device.UpdateWindowRects();
 }
 
 //--------------------------------------------------------------------