Merge a284523f9e into 4df5129529

The glfwCreateWindow function ensures that the width and height are
at least greater or equal than zero, but on X11 it is invalid to
create a window with dimensions that equal zero, see [1].

This change ensures that the dimensions passed to XCreateWindow are
at least 1 by 1.

This issue was detected in [2], where a call to glfwCreateWindow
was done to request a 1x1 window, with a _glfw.x11.contentScaleX of
less than 1.0 (0.958333) this results in a request for a 0x0 window
which then causes an BadWindow error from X11.

[1]: e003f52661/specs/libX11/CH03.xml (L1333-1337)
[2]: https://github.com/WerWolv/ImHex/pull/2390

CONTRIBUTORS.md

@@ -282,10 +282,12 @@ video tutorials.
  - Corentin Wallez
  - Torsten Walluhn
  - Patrick Walton
+ - Ivor Wanders
  - Jim Wang
  - Xo Wang
  - Andre Weissflog
  - Jay Weisskopf
+ - Drew Weymouth
  - Frank Wille
  - Andy Williams
  - Joel Winarske

README.md

@@ -145,10 +145,13 @@ information on what to include when reporting a bug.
  - [Wayland] Bugfix: The cursor position was not updated when clicking through
    from a modal to the content area
  - [X11] Bugfix: Running without a WM could trigger an assert (#2593,#2601,#2631)
+ - [X11] Bugfix: Occasional crash when an idle display awakes (#2766) 
  - [Null] Added Vulkan 'window' surface creation via `VK_EXT_headless_surface`
  - [Null] Added EGL context creation on Mesa via `EGL_MESA_platform_surfaceless`
  - [EGL] Allowed native access on Wayland with `GLFW_CONTEXT_CREATION_API` set to
    `GLFW_NATIVE_CONTEXT_API` (#2518)
+ - [X11] Bugfix: Prevent BadWindow when creating small windows with a content scale
+   less than 1 (#2754)
 
 
 ## Contact

src/win32_window.c

@@ -35,6 +35,19 @@
 #include <assert.h>
 #include <windowsx.h>
 #include <shellapi.h>
+#include <BaseTsd.h>
+#include <stdio.h>
+
+
+#ifdef _WIN64
+typedef UINT64 QWORD; // Needed for NEXTRAWINPUTBLOCK()
+#endif
+
+#ifndef RI_MOUSE_HWHEEL
+// MinGW may not have the define for RI_MOUSE_HWHEEL
+#define RI_MOUSE_HWHEEL 0x0800
+#endif
+
 
 // Returns the window style for the specified window
 //
@@ -265,7 +278,7 @@ static void releaseCursor(void)
 //
 static void enableRawMouseMotion(_GLFWwindow* window)
 {
-    const RAWINPUTDEVICE rid = { 0x01, 0x02, 0, window->win32.handle };
+    const RAWINPUTDEVICE rid = { 0x01, 0x02, RIDEV_NOLEGACY, window->win32.handle };
 
     if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
     {
@@ -894,77 +907,6 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM l
             return 0;
         }
 
-        case WM_INPUT:
-        {
-            UINT size = 0;
-            HRAWINPUT ri = (HRAWINPUT) lParam;
-            RAWINPUT* data = NULL;
-            int dx, dy;
-
-            if (_glfw.win32.disabledCursorWindow != window)
-                break;
-            if (!window->rawMouseMotion)
-                break;
-
-            GetRawInputData(ri, RID_INPUT, NULL, &size, sizeof(RAWINPUTHEADER));
-            if (size > (UINT) _glfw.win32.rawInputSize)
-            {
-                _glfw_free(_glfw.win32.rawInput);
-                _glfw.win32.rawInput = _glfw_calloc(size, 1);
-                _glfw.win32.rawInputSize = size;
-            }
-
-            size = _glfw.win32.rawInputSize;
-            if (GetRawInputData(ri, RID_INPUT,
-                                _glfw.win32.rawInput, &size,
-                                sizeof(RAWINPUTHEADER)) == (UINT) -1)
-            {
-                _glfwInputError(GLFW_PLATFORM_ERROR,
-                                "Win32: Failed to retrieve raw input data");
-                break;
-            }
-
-            data = _glfw.win32.rawInput;
-            if (data->data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE)
-            {
-                POINT pos = {0};
-                int width, height;
-
-                if (data->data.mouse.usFlags & MOUSE_VIRTUAL_DESKTOP)
-                {
-                    pos.x += GetSystemMetrics(SM_XVIRTUALSCREEN);
-                    pos.y += GetSystemMetrics(SM_YVIRTUALSCREEN);
-                    width = GetSystemMetrics(SM_CXVIRTUALSCREEN);
-                    height = GetSystemMetrics(SM_CYVIRTUALSCREEN);
-                }
-                else
-                {
-                    width = GetSystemMetrics(SM_CXSCREEN);
-                    height = GetSystemMetrics(SM_CYSCREEN);
-                }
-
-                pos.x += (int) ((data->data.mouse.lLastX / 65535.f) * width);
-                pos.y += (int) ((data->data.mouse.lLastY / 65535.f) * height);
-                ScreenToClient(window->win32.handle, &pos);
-
-                dx = pos.x - window->win32.lastCursorPosX;
-                dy = pos.y - window->win32.lastCursorPosY;
-            }
-            else
-            {
-                dx = data->data.mouse.lLastX;
-                dy = data->data.mouse.lLastY;
-            }
-
-            _glfwInputCursorPos(window,
-                                window->virtualCursorPosX + dx,
-                                window->virtualCursorPosY + dy);
-
-            window->win32.lastCursorPosX += dx;
-            window->win32.lastCursorPosY += dy;
-            break;
-        }
-
         case WM_MOUSELEAVE:
         {
             window->win32.cursorTracked = GLFW_FALSE;
@@ -2086,11 +2028,215 @@ GLFWbool _glfwRawMouseMotionSupportedWin32(void)
     return GLFW_TRUE;
 }
 
+
+void _processRawInput(void)
+{
+    UINT size = 0;
+    UINT riSize = 0;
+    _GLFWwindow* window = _glfw.windowListHead;
+
+    if (_glfw.win32.disabledCursorWindow != window)
+        return;
+    if (!window->rawMouseMotion)
+        return;
+
+    // get the size of the raw input buffer
+    UINT result = GetRawInputBuffer(NULL, &riSize, sizeof(RAWINPUTHEADER));
+    if (result == (UINT)-1)
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "Win32: Failed to retrieve raw input buffer size");
+        return;
+    }
+
+    UINT byteCount = riSize * 16;
+
+    if (byteCount > (UINT)_glfw.win32.rawInputSize)
+    {
+        _glfw_free(_glfw.win32.rawInput);
+        _glfw.win32.rawInput = _glfw_calloc(byteCount, 1);
+        _glfw.win32.rawInputSize = byteCount;
+    }
+
+    // read it (actually) this time into the buffer
+    size = _glfw.win32.rawInputSize;
+    result = GetRawInputBuffer(_glfw.win32.rawInput, &size, sizeof(RAWINPUTHEADER));
+    if (result == (UINT)-1)
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "Win32: Failed to retrieve raw input buffer");
+        _glfw_free(_glfw.win32.rawInput);
+        return;
+    }
+
+    // print msg count
+    //printf("raw input count: %u\n", result);
+
+    UINT riCount = result;
+
+    RAWINPUT* data = _glfw.win32.rawInput;
+
+    for (unsigned int i = 0; i < riCount; ++i)
+    {
+        if (data->header.dwType == RIM_TYPEMOUSE) {
+            int dx = 0, dy = 0;
+            
+            if (data->data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE)
+            {
+                POINT pos = {0};
+                int width, height;
+
+                if (data->data.mouse.usFlags & MOUSE_VIRTUAL_DESKTOP)
+                {
+                    pos.x += GetSystemMetrics(SM_XVIRTUALSCREEN);
+                    pos.y += GetSystemMetrics(SM_YVIRTUALSCREEN);
+                    width = GetSystemMetrics(SM_CXVIRTUALSCREEN);
+                    height = GetSystemMetrics(SM_CYVIRTUALSCREEN);
+                }
+                else
+                {
+                    width = GetSystemMetrics(SM_CXSCREEN);
+                    height = GetSystemMetrics(SM_CYSCREEN);
+                }
+
+                pos.x += (int)((data->data.mouse.lLastX / 65535.f) * width);
+                pos.y += (int)((data->data.mouse.lLastY / 65535.f) * height);
+                ScreenToClient(window->win32.handle, &pos);
+
+                dx = pos.x - window->win32.lastCursorPosX;
+                dy = pos.y - window->win32.lastCursorPosY;
+            }
+            else
+            {
+                if (data->data.mouse.lLastX || data->data.mouse.lLastY)
+                {
+                    dx = data->data.mouse.lLastX;
+                    dy = data->data.mouse.lLastY;
+                }
+            }
+
+            if (dx != 0 || dy != 0)
+            {
+                _glfwInputCursorPos(window,
+                                    window->virtualCursorPosX + dx,
+                                    window->virtualCursorPosY + dy);
+
+                window->win32.lastCursorPosX += dx;
+                window->win32.lastCursorPosY += dy;
+            }
+
+            // Instead of reposting the events, we duplicate the button events' handlers here.
+
+            
+            USHORT buttonFlags = data->data.mouse.usButtonFlags;
+            HWND hwnd = window->win32.handle;
+
+            // if any down or up button (anything except RI_MOUSE_WHEEL or RI_MOUSE_HWHEEL), process
+            if (buttonFlags & 0xFFFF & ~(RI_MOUSE_WHEEL | RI_MOUSE_HWHEEL))
+            {
+                int i, button = -1, action = -1;
+                
+                if (buttonFlags & RI_MOUSE_LEFT_BUTTON_DOWN)
+                {
+                    button = GLFW_MOUSE_BUTTON_LEFT;
+                    action = GLFW_PRESS;
+                }
+
+                if (buttonFlags & RI_MOUSE_LEFT_BUTTON_UP)
+                {
+                    button = GLFW_MOUSE_BUTTON_LEFT;
+                    action = GLFW_RELEASE;
+                }
+                    
+                if (buttonFlags & RI_MOUSE_RIGHT_BUTTON_DOWN)
+                {
+                    button = GLFW_MOUSE_BUTTON_RIGHT;
+                    action = GLFW_PRESS;
+                }
+                if (buttonFlags & RI_MOUSE_RIGHT_BUTTON_UP)
+                {
+                    button = GLFW_MOUSE_BUTTON_RIGHT;
+                    action = GLFW_RELEASE;
+                }
+                    
+                if (buttonFlags & RI_MOUSE_MIDDLE_BUTTON_DOWN)
+                {
+                    button = GLFW_MOUSE_BUTTON_MIDDLE;
+                    action = GLFW_PRESS;
+                }
+                if (buttonFlags & RI_MOUSE_MIDDLE_BUTTON_UP)
+                {
+                    button = GLFW_MOUSE_BUTTON_MIDDLE;
+                    action = GLFW_RELEASE;
+                }
+                    
+                if (buttonFlags & RI_MOUSE_BUTTON_4_DOWN)
+                {
+                    button = GLFW_MOUSE_BUTTON_4;
+                    action = GLFW_PRESS;
+                }
+                if (buttonFlags & RI_MOUSE_BUTTON_4_UP)
+                {
+                    button = GLFW_MOUSE_BUTTON_4;
+                    action = GLFW_RELEASE;
+                }
+                    
+                if (buttonFlags & RI_MOUSE_BUTTON_5_DOWN)
+                {
+                    button = GLFW_MOUSE_BUTTON_5;
+                    action = GLFW_PRESS;
+                }
+                if (buttonFlags & RI_MOUSE_BUTTON_5_UP)
+                {
+                    button = GLFW_MOUSE_BUTTON_5;
+                    action = GLFW_RELEASE;
+                }
+
+                for (i = 0;  i <= GLFW_MOUSE_BUTTON_LAST;  i++)
+                {
+                    if (window->mouseButtons[i] == GLFW_PRESS)
+                        break;
+                }
+
+                if (i > GLFW_MOUSE_BUTTON_LAST)
+                    SetCapture(hwnd);
+                
+                _glfwInputMouseClick(window, button, action, getKeyMods());
+
+                for (i = 0;  i <= GLFW_MOUSE_BUTTON_LAST;  i++)
+                {
+                    if (window->mouseButtons[i] == GLFW_PRESS)
+                        break;
+                }
+
+                if (i > GLFW_MOUSE_BUTTON_LAST)
+                    ReleaseCapture();
+            }
+            // Handle mouse wheel events
+            if (buttonFlags & RI_MOUSE_WHEEL)
+            {
+                SHORT wheelDelta = (SHORT)data->data.mouse.usButtonData;
+                _glfwInputScroll(window, 0.0, wheelDelta / (double) WHEEL_DELTA);
+            }
+            if (buttonFlags & RI_MOUSE_HWHEEL)
+            {
+                SHORT wheelDelta = (SHORT)data->data.mouse.usButtonData;
+                _glfwInputScroll(window, -wheelDelta / (double) WHEEL_DELTA, 0.0);
+            }
+        }
+
+        data = NEXTRAWINPUTBLOCK(data);
+    }
+}
+
+
 void _glfwPollEventsWin32(void)
 {
     MSG msg;
     HWND handle;
-    _GLFWwindow* window;
+    _GLFWwindow* window = _glfw.windowListHead;
+
+    _processRawInput(); // this does the whole `GetRawInputBuffer` thing
 
     while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE))
     {
@@ -2153,7 +2299,8 @@ void _glfwPollEventsWin32(void)
     }
 
     window = _glfw.win32.disabledCursorWindow;
-    if (window)
+    // Disable with raw mouse motion because that reports dx/dy directly
+    if (window && !window->rawMouseMotion)
     {
         int width, height;
         _glfwGetWindowSizeWin32(window, &width, &height);

src/x11_monitor.c

@@ -151,6 +151,11 @@ void _glfwPollMonitorsX11(void)
             }
 
             XRRCrtcInfo* ci = XRRGetCrtcInfo(_glfw.x11.display, sr, oi->crtc);
+            if (!ci) {
+                XRRFreeOutputInfo(oi);
+                continue;
+            }
+
             if (ci->rotation == RR_Rotate_90 || ci->rotation == RR_Rotate_270)
             {
                 widthMM  = oi->mm_height;

src/x11_window.c

@@ -576,6 +576,10 @@ static GLFWbool createNativeWindow(_GLFWwindow* window,
         height *= _glfw.x11.contentScaleY;
     }
 
+    // The dimensions must be nonzero, or a BadValue error results.
+    width = _glfw_max(1, width);
+    height = _glfw_max(1, height);
+
     int xpos = 0, ypos = 0;
 
     if (wndconfig->xpos != GLFW_ANY_POSITION && wndconfig->ypos != GLFW_ANY_POSITION)