Merge remote-tracking branch 'adrian/multi-display-support' into multi-monitor

Conflicts:
	.gitignore

.gitignore

@@ -1,7 +1,7 @@
+*.a
+CMakeCache.txt
 CMakeFiles
 cmake_install.cmake
-CMakeCache.txt
-Makefile
 cmake_uninstall.cmake
 .DS_Store
 src/config.h
@@ -9,6 +9,9 @@ src/libglfw.pc
 src/libglfw.so
 src/libglfw.a
 src/libglfw.dylib
+src/libglfw.lib
+src/libglfwdll.lib
+src/libglfw.dll
 examples/boing
 examples/gears
 examples/heightmap
@@ -32,6 +35,7 @@ tests/peter
 tests/reopen
 tests/sharing
 tests/tearing
+tests/version
 tests/windows
 tests/*.app
 tests/*.exe

examples/CMakeLists.txt

@@ -3,6 +3,12 @@
 # the main CMakeLists.txt
 link_libraries(libglfwStatic ${GLFW_LIBRARIES} ${OPENGL_glu_LIBRARY})
 
+if (UNIX AND NOT APPLE AND NOT CYGWIN)
+    find_library(MATH_LIBRARY m)
+    find_library(REALTIME_LIBRARY rt)
+    link_libraries(${MATH_LIBRARY} ${REALTIME_LIBRARY})
+endif (UNIX AND NOT APPLE AND NOT CYGWIN)
+
 include_directories(${GLFW_SOURCE_DIR}/include
                     ${GLFW_SOURCE_DIR}/support
                     ${OPENGL_INCLUDE_DIR})

include/GL/glfw3.h

@@ -458,10 +458,22 @@ extern "C" {
 /* Gamma ramps */
 #define GLFW_GAMMA_RAMP_SIZE      256
 
+/* Monitor constants */
+#define GLFW_MONITOR_NAME            0x00060000
+#define GLFW_MONITOR_PHYSICAL_WIDTH  0x00060001
+#define GLFW_MONITOR_PHYSICAL_HEIGHT 0x00060002
+#define GLFW_MONITOR_SCREEN_POS_X    0x00060003
+#define GLFW_MONITOR_SCREEN_POS_Y    0x00060004
+#define GLFW_MONITOR_CONNECTED       0x00061000
+#define GLFW_MONITOR_DISCONNECTED    0x00061001
+
 /*************************************************************************
  * Typedefs
  *************************************************************************/
 
+/* Monitor handle type */
+typedef void* GLFWmonitor;
+
 /* Window handle type */
 typedef void* GLFWwindow;
 
@@ -479,6 +491,7 @@ typedef void (* GLFWkeyfun)(GLFWwindow,int,int);
 typedef void (* GLFWcharfun)(GLFWwindow,int);
 typedef void* (* GLFWmallocfun)(size_t);
 typedef void (* GLFWfreefun)(void*);
+typedef void (* GLFWmonitordevicefun)(GLFWmonitor,int);
 
 /* The video mode structure used by glfwGetVideoModes */
 typedef struct
@@ -528,8 +541,20 @@ GLFWAPI int glfwGetError(void);
 GLFWAPI const char* glfwErrorString(int error);
 GLFWAPI void glfwSetErrorCallback(GLFWerrorfun cbfun);
 
+/* Monitor callback registration */
+GLFWAPI void glfwSetMonitorDeviceCallback(GLFWmonitordevicefun cbfun);
+
+/* Monitor attributes */
+GLFWAPI void glfwSetMonitorUserPointer(GLFWmonitor monitor, void* pointer);
+GLFWAPI void* glfwGetMonitorUserPointer(GLFWmonitor monitor);
+GLFWAPI int glfwGetMonitorParam(GLFWmonitor monitor, int param);
+GLFWAPI const char* glfwGetMonitorString(GLFWmonitor monitor, int param);
+
+/* Monitor discovery */
+GLFWAPI GLFWmonitor glfwGetNextMonitor(GLFWmonitor iterator);
+
 /* Video mode functions */
-GLFWAPI int  glfwGetVideoModes(GLFWvidmode* list, int maxcount);
+GLFWAPI int  glfwGetVideoModes(GLFWmonitor monitor, GLFWvidmode* list, int maxcount);
 GLFWAPI void glfwGetDesktopMode(GLFWvidmode* mode);
 
 /* Gamma ramp functions */

src/CMakeLists.txt

@@ -1,4 +1,8 @@
 
+if(WIN32)
+    add_definitions(-DWINVER=0x0501)
+endif(WIN32)
+
 if(UNIX)
     if(_GLFW_HAS_XRANDR)
         set(GLFW_PKGLIBS "${GLFW_PKGLIBS} xrandr")
@@ -15,7 +19,7 @@ include_directories(${GLFW_SOURCE_DIR}/src
                     ${GLFW_BINARY_DIR}/src
                     ${GLFW_INCLUDE_DIR})
 
-set(common_SOURCES enable.c error.c fullscreen.c gamma.c init.c input.c
+set(common_SOURCES monitor.c enable.c error.c fullscreen.c gamma.c init.c input.c
                    joystick.c opengl.c time.c window.c)
 
 if(_GLFW_COCOA_NSGL)
@@ -29,10 +33,10 @@ elseif(_GLFW_WIN32_WGL)
     set(libglfw_SOURCES ${common_SOURCES} win32_enable.c win32_fullscreen.c
                         win32_gamma.c win32_init.c win32_joystick.c
                         win32_opengl.c win32_time.c win32_window.c
-                        win32_dllmain.c)
+                        win32_dllmain.c win32_monitor.c)
 elseif(_GLFW_X11_GLX)
-    set(libglfw_SOURCES ${common_SOURCES} x11_enable.c x11_fullscreen.c
+    set(libglfw_SOURCES ${common_SOURCES} x11_monitor.c x11_enable.c
-                        x11_gamma.c x11_init.c x11_joystick.c
+                        x11_fullscreen.c x11_gamma.c x11_init.c x11_joystick.c
                         x11_keysym2unicode.c x11_opengl.c x11_time.c
                         x11_window.c)
 else()

src/fullscreen.c

@@ -37,7 +37,7 @@
 // Lexical comparison function for GLFW video modes, used by qsort
 //========================================================================
 
-static int compareVideoModes(const void* firstPtr, const void* secondPtr)
+int _glfwCompareVideoModes(const void* firstPtr, const void* secondPtr)
 {
     int firstBPP, secondBPP, firstSize, secondSize;
     GLFWvidmode* first = (GLFWvidmode*) firstPtr;
@@ -100,9 +100,10 @@ void _glfwSplitBPP(int bpp, int* red, int* green, int* blue)
 // Get a list of available video modes
 //========================================================================
 
-GLFWAPI int glfwGetVideoModes(GLFWvidmode* list, int maxcount)
+GLFWAPI int glfwGetVideoModes(GLFWmonitor handle, GLFWvidmode* list, int maxcount)
 {
     int count;
+    _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
 
     if (!_glfwInitialized)
     {
@@ -110,6 +111,13 @@ GLFWAPI int glfwGetVideoModes(GLFWvidmode* list, int maxcount)
         return 0;
     }
 
+    if (monitor == NULL)
+    {
+        _glfwSetError(GLFW_INVALID_VALUE,
+                      "glfwGetVideoModes: Invalid monitor handle");
+        return 0;
+    }
+
     if (maxcount <= 0)
     {
         _glfwSetError(GLFW_INVALID_VALUE,
@@ -125,9 +133,9 @@ GLFWAPI int glfwGetVideoModes(GLFWvidmode* list, int maxcount)
         return 0;
     }
 
-    count = _glfwPlatformGetVideoModes(list, maxcount);
+    count = _glfwPlatformGetVideoModes(monitor, list, maxcount);
     if (count > 0)
-        qsort(list, count, sizeof(GLFWvidmode), compareVideoModes);
+        qsort(list, count, sizeof(GLFWvidmode), _glfwCompareVideoModes);
 
     return count;
 }

src/internal.h

@@ -80,6 +80,7 @@ typedef struct _GLFWwndconfig _GLFWwndconfig;
 typedef struct _GLFWfbconfig _GLFWfbconfig;
 typedef struct _GLFWwindow _GLFWwindow;
 typedef struct _GLFWlibrary _GLFWlibrary;
+typedef struct _GLFWmonitor _GLFWmonitor;
 
 
 //------------------------------------------------------------------------
@@ -219,6 +220,27 @@ struct _GLFWwindow
 };
 
 
+//------------------------------------------------------------------------
+// Display structure
+//------------------------------------------------------------------------
+struct _GLFWmonitor
+{
+    struct _GLFWmonitor* next;
+
+    void*     userPointer;
+
+    char*     name;
+    // physical dimensions in millimeters.
+    int       physicalWidth;
+    int       physicalHeight;
+    // logical orientation of the screen on the desktop
+    int       screenX;
+    int       screenY;
+
+    // These are defined in the current port's platform.h
+    _GLFW_PLATFORM_MONITOR_STATE;
+};
+
 //------------------------------------------------------------------------
 // Library global data
 //------------------------------------------------------------------------
@@ -229,6 +251,8 @@ struct _GLFWlibrary
     _GLFWwindow*  windowListHead;
     _GLFWwindow*  currentWindow;
     _GLFWwindow*  activeWindow;
+    _GLFWwindow*  cursorLockWindow;
+    _GLFWmonitor* monitorListHead;
 
     GLFWwindowsizefun    windowSizeCallback;
     GLFWwindowclosefun   windowCloseCallback;
@@ -240,6 +264,7 @@ struct _GLFWlibrary
     GLFWscrollfun        scrollCallback;
     GLFWkeyfun           keyCallback;
     GLFWcharfun          charCallback;
+    GLFWmonitordevicefun monitorCallback;
 
     GLFWthreadmodel      threading;
     GLFWallocator        allocator;
@@ -281,7 +306,7 @@ void _glfwPlatformEnableSystemKeys(_GLFWwindow* window);
 void _glfwPlatformDisableSystemKeys(_GLFWwindow* window);
 
 // Fullscreen
-int  _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount);
+int  _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, GLFWvidmode* list, int maxcount);
 void _glfwPlatformGetDesktopMode(GLFWvidmode* mode);
 
 // Gamma ramp
@@ -332,6 +357,7 @@ void _glfwFree(void* ptr);
 
 // Fullscren management (fullscreen.c)
 void _glfwSplitBPP(int bpp, int* red, int* green, int* blue);
+int _glfwCompareVideoModes(const void* firstPtr, const void* secondPtr);
 
 // Error handling (error.c)
 void _glfwSetError(int error, const char* description);

src/monitor.c

@@ -0,0 +1,147 @@
+//========================================================================
+// GLFW - An OpenGL framework
+// Platform:    Any
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                        GLFW public API                       //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Iterate through connected monitors
+//========================================================================
+
+GLFWAPI GLFWmonitor glfwGetNextMonitor(GLFWmonitor handle)
+{
+    _GLFWmonitor* iterator = (_GLFWmonitor*) handle;
+    _GLFWmonitor* result = NULL;
+
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return result;
+    }
+
+    if (iterator == NULL)
+        result = _glfwLibrary.monitorListHead;
+    else
+        result = iterator->next;
+
+    return result;
+}
+
+
+//========================================================================
+// Get monitor parameter
+//========================================================================
+
+GLFWAPI int glfwGetMonitorParam(GLFWmonitor handle, int param)
+{
+    _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return 0;
+    }
+
+    if (monitor == NULL)
+    {
+        _glfwSetError(GLFW_INVALID_VALUE,
+                      "glfwGetMonitorParam: Invalid monitor handle");
+        return 0;
+    }
+
+    switch (param)
+    {
+        case GLFW_MONITOR_PHYSICAL_WIDTH:
+            return monitor->physicalWidth;
+        case GLFW_MONITOR_PHYSICAL_HEIGHT:
+            return monitor->physicalHeight;
+        case GLFW_MONITOR_SCREEN_POS_X:
+            return monitor->screenX;
+        case GLFW_MONITOR_SCREEN_POS_Y:
+            return monitor->screenY;
+    }
+
+    _glfwSetError(GLFW_INVALID_ENUM,
+                  "glfwGetMonitorParam: Invalid enum value for 'param' parameter");
+    return 0;
+}
+
+
+//========================================================================
+// Get monitor string
+//========================================================================
+
+GLFWAPI const char* glfwGetMonitorString(GLFWmonitor handle, int param)
+{
+    _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return NULL;
+    }
+
+    if (monitor == NULL)
+    {
+        _glfwSetError(GLFW_INVALID_VALUE,
+                      "glfwGetMonitorString: Invalid monitor handle");
+        return NULL;
+    }
+
+    switch (param)
+    {
+        case GLFW_MONITOR_NAME:
+            return monitor->name;
+    }
+
+    _glfwSetError(GLFW_INVALID_ENUM,
+                  "glfwGetMonitorString: Invalid enum value for 'param' parameter");
+    return NULL;
+}
+
+//========================================================================
+// Set a callback function for monitor events
+//========================================================================
+
+GLFWAPI void glfwSetMonitorDeviceCallback(GLFWmonitordevicefun cbfun)
+{
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return;
+    }
+
+    _glfwLibrary.monitorCallback= cbfun;
+}
+

src/win32_fullscreen.c

@@ -182,71 +182,58 @@ void _glfwRestoreVideoMode(void)
 // Get a list of available video modes
 //========================================================================
 
-int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
+int  _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, GLFWvidmode* list, int maxcount)
 {
-    int count, success, mode, i, j;
+    DEVMODE deviceMode;
-    int m1, m2, bpp, r, g, b;
+    DWORD deviceModeNum;
-    DEVMODE dm;
 
-    // Loop through all video modes and extract all the UNIQUE modes
+    GLFWvidmode* vidModes;
-    count = 0;
+    int vidModesCount;
-    mode  = 0;
+    GLFWvidmode vidMode;
 
-    do
+    deviceMode.dmSize = sizeof(DEVMODE);
+    deviceModeNum  = 0;
+
+    vidModes = NULL;
+    vidModesCount = 0;
+
+    for (;;)
     {
-        // Get video mode properties
+        if (!EnumDisplaySettings(monitor->Win32.name, deviceModeNum, &deviceMode))
-        dm.dmSize = sizeof(DEVMODE);
-        success = EnumDisplaySettings(NULL, mode, &dm);
-
-        // Is it a valid mode? (only list depths >= 15 bpp)
-        if (success && dm.dmBitsPerPel >= 15)
-        {
-            // Convert to RGB, and back to bpp ("mask out" alpha bits etc)
-            _glfwSplitBPP(dm.dmBitsPerPel, &r, &g, &b);
-            bpp = r + g + b;
-
-            // Mode "code" for this mode
-            m1 = (bpp << 25) | (dm.dmPelsWidth * dm.dmPelsHeight);
-
-            // Insert mode in list (sorted), and avoid duplicates
-            for (i = 0;  i < count;  i++)
-            {
-                // Mode "code" for already listed mode
-                bpp = list[i].redBits + list[i].greenBits + list[i].blueBits;
-                m2 = (bpp << 25) | (list[i].width * list[i].height);
-                if (m1 <= m2)
            break;
+
+        if (vidModesCount >= maxcount)
+            break;
+
+        deviceModeNum++;
+
+        if (deviceMode.dmBitsPerPel < 15)
+            continue;
+
+        vidMode.height = deviceMode.dmPelsHeight;
+        vidMode.width  = deviceMode.dmPelsWidth;
+        // Convert to RGB, and back to bpp ("mask out" alpha bits etc)
+        _glfwSplitBPP(deviceMode.dmBitsPerPel,
+                      &vidMode.redBits,
+                      &vidMode.greenBits,
+                      &vidMode.blueBits);
+
+        // skip duplicates.
+        if (vidModes && bsearch(&vidMode, vidModes, vidModesCount, sizeof(GLFWvidmode), _glfwCompareVideoModes))
+            continue;
+
+        vidModes = realloc(vidModes, sizeof(GLFWvidmode) * ++vidModesCount);
+        memcpy(vidModes + (vidModesCount - 1), &vidMode, sizeof(GLFWvidmode));
+
+        qsort(vidModes, vidModesCount, sizeof(GLFWvidmode), _glfwCompareVideoModes);
     }
 
-            // New entry at the end of the list?
+    if (list && maxcount)
-            if (i >= count)
+        memcpy(list, vidModes, sizeof(GLFWvidmode) * min(vidModesCount, maxcount));
-            {
-                list[count].width     = dm.dmPelsWidth;
-                list[count].height    = dm.dmPelsHeight;
-                list[count].redBits   = r;
-                list[count].greenBits = g;
-                list[count].blueBits  = b;
-                count ++;
-            }
-            // Insert new entry in the list?
-            else if (m1 < m2)
-            {
-                for (j = count;  j > i;  j--)
-                    list[j] = list[j - 1];
 
-                list[i].width     = dm.dmPelsWidth;
+    free(vidModes);
-                list[i].height    = dm.dmPelsHeight;
-                list[i].redBits   = r;
-                list[i].greenBits = g;
-                list[i].blueBits  = b;
-                count++;
-            }
-        }
-        mode++;
-    }
-    while (success && (count < maxcount));
 
-    return count;
+    return vidModesCount;
 }
 
 

src/win32_init.c

@@ -165,6 +165,8 @@ int _glfwPlatformInit(void)
     _glfwPlatformGetGammaRamp(&_glfwLibrary.originalRamp);
     _glfwLibrary.currentRamp = _glfwLibrary.originalRamp;
 
+    _glfwInitMonitors();
+
     _glfwInitTimer();
 
     return GL_TRUE;
@@ -180,6 +182,8 @@ int _glfwPlatformTerminate(void)
     // Restore the original gamma ramp
     _glfwPlatformSetGammaRamp(&_glfwLibrary.originalRamp);
 
+    _glfwTerminateMonitors();
+
     if (_glfwLibrary.Win32.classAtom)
     {
         UnregisterClass(_GLFW_WNDCLASSNAME, _glfwLibrary.Win32.instance);

src/win32_monitor.c

@@ -0,0 +1,231 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    X11 (Unix)
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+// The MinGW package for Debian lacks this
+#ifndef EDS_ROTATEDMODE
+#define EDS_ROTATEDMODE 0x00000004
+#endif
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+_GLFWmonitor** _glfwCreateMonitor(_GLFWmonitor** current,
+                                  DISPLAY_DEVICE* adapter,
+                                  DISPLAY_DEVICE* monitor,
+                                  DEVMODE* setting)
+{
+    HDC dc = NULL;
+
+    *current = _glfwMalloc(sizeof(_GLFWmonitor));
+    memset(*current, 0, sizeof(_GLFWmonitor));
+
+    dc = CreateDC("DISPLAY", monitor->DeviceString, NULL, NULL);
+
+    (*current)->physicalWidth  = GetDeviceCaps(dc, HORZSIZE);
+    (*current)->physicalHeight = GetDeviceCaps(dc, VERTSIZE);
+
+    DeleteDC(dc);
+
+    (*current)->name = _glfwMalloc(strlen(monitor->DeviceName) + 1);
+    memcpy((*current)->name, monitor->DeviceName, strlen(monitor->DeviceName) + 1);
+    (*current)->name[strlen(monitor->DeviceName)] = '\0';
+
+    (*current)->screenX = setting->dmPosition.x;
+    (*current)->screenY = setting->dmPosition.y;
+
+    memcpy((*current)->Win32.name, adapter->DeviceName, 32);
+    return &((*current)->next);
+}
+
+_GLFWmonitor* _glfwDestroyMonitor(_GLFWmonitor* monitor)
+{
+    _GLFWmonitor* result;
+
+    result = monitor->next;
+
+    _glfwFree(monitor->name);
+    _glfwFree(monitor);
+
+    return result;
+}
+
+// todo: This is ugly. The platform should only allocate a list of the current devices.
+// The platform independent code should be in charge of the handling for the initial
+// setup, refreshing and freeing the list.
+void _glfwInitMonitors(void)
+{
+    _GLFWmonitor** curMonitor;
+
+    DISPLAY_DEVICE adapter;
+    DWORD adapterNum;
+
+    DISPLAY_DEVICE monitor;
+
+    DEVMODE setting;
+    DWORD settingNum;
+
+    curMonitor = &_glfwLibrary.monitorListHead;
+
+    adapter.cb = sizeof(DISPLAY_DEVICE);
+    adapterNum = 0;
+
+    monitor.cb = sizeof(DISPLAY_DEVICE);
+    setting.dmSize = sizeof(DEVMODE);
+    settingNum = 0;
+
+    while (EnumDisplayDevices(NULL, adapterNum++, &adapter, 0))
+    {
+        if (adapter.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER || !(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE))
+            continue;
+
+        EnumDisplaySettingsEx(adapter.DeviceName,
+                              ENUM_CURRENT_SETTINGS,
+                              &setting,
+                              EDS_ROTATEDMODE);
+
+        EnumDisplayDevices(adapter.DeviceName, 0, &monitor, 0);
+
+        curMonitor = _glfwCreateMonitor(curMonitor, &adapter, &monitor, &setting);
+    }
+}
+
+void _glfwRefreshMonitors(void)
+{
+    DISPLAY_DEVICE adapter;
+    DWORD adapterNum = 0;
+
+    DISPLAY_DEVICE monitor;
+
+    DEVMODE setting;
+
+    _GLFWmonitor* newMonitorList = NULL;
+    _GLFWmonitor** curMonitor = &newMonitorList;
+
+    _GLFWmonitor* curNewMonitor;
+    _GLFWmonitor* curOldMonitor;
+
+    while (EnumDisplayDevices(NULL, adapterNum++, &adapter, 0))
+    {
+        if (adapter.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER || !(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE))
+            continue;
+
+        EnumDisplaySettingsEx(adapter.DeviceName, ENUM_CURRENT_SETTINGS, &setting, EDS_ROTATEDMODE);
+
+        EnumDisplayDevices(adapter.DeviceName, 0, &monitor, 0);
+
+        curMonitor = _glfwCreateMonitor(curMonitor, &adapter, &monitor, &setting);
+    }
+
+    curNewMonitor = newMonitorList;
+    curOldMonitor = _glfwLibrary.monitorListHead;
+
+    while (_glfwLibrary.monitorCallback && (curNewMonitor || curOldMonitor))
+    {
+        _GLFWmonitor* lookAheadOldMonitor;
+        _GLFWmonitor* lookAheadNewMonitor;
+
+        if (curOldMonitor && curNewMonitor && !strcmp(curOldMonitor->name, curOldMonitor->name))
+        {
+            curNewMonitor = curNewMonitor->next;
+            curOldMonitor = curOldMonitor->next;
+            continue;
+        }
+
+        if (curNewMonitor && !curOldMonitor)
+        {
+            _glfwLibrary.monitorCallback(curNewMonitor, GLFW_MONITOR_CONNECTED);
+            curNewMonitor = curNewMonitor->next;
+            continue;
+        }
+
+        if (!curNewMonitor && curOldMonitor)
+        {
+            _glfwLibrary.monitorCallback(curOldMonitor, GLFW_MONITOR_DISCONNECTED);
+            curOldMonitor = curOldMonitor->next;
+            continue;
+        }
+
+        lookAheadOldMonitor = curOldMonitor->next;
+        lookAheadNewMonitor = curNewMonitor->next;
+
+        while (lookAheadOldMonitor && !strcmp(curNewMonitor->name, lookAheadOldMonitor->name))
+            lookAheadOldMonitor = lookAheadOldMonitor->next;
+
+        while (lookAheadNewMonitor && !strcmp(curOldMonitor->name, lookAheadNewMonitor->name))
+            lookAheadNewMonitor = lookAheadNewMonitor->next;
+
+        if (!lookAheadOldMonitor)
+        {
+            // nothing found in the old monitor list, that matches the current new monitor.
+            _glfwLibrary.monitorCallback(curNewMonitor, GLFW_MONITOR_CONNECTED);
+            curNewMonitor = curNewMonitor->next;
+        }
+        else
+        {
+            while (strcmp(curOldMonitor->name, lookAheadOldMonitor->name))
+            {
+                _glfwLibrary.monitorCallback(curOldMonitor, GLFW_MONITOR_DISCONNECTED);
+                curOldMonitor = curOldMonitor->next;
+            }
+        }
+
+        if (!lookAheadNewMonitor)
+        {
+            // nothing found in the new monitor list, that matches the current old monitor.
+            _glfwLibrary.monitorCallback(curOldMonitor, GLFW_MONITOR_DISCONNECTED);
+            curOldMonitor = curOldMonitor->next;
+        }
+        else
+        {
+            while (strcmp(curNewMonitor->name, lookAheadNewMonitor->name))
+            {
+                _glfwLibrary.monitorCallback(curNewMonitor, GLFW_MONITOR_CONNECTED);
+                curNewMonitor = curNewMonitor->next;
+            }
+        }
+    }
+
+    _glfwTerminateMonitors();
+    _glfwLibrary.monitorListHead = newMonitorList;
+}
+
+void _glfwTerminateMonitors(void)
+{
+    while (_glfwLibrary.monitorListHead)
+        _glfwLibrary.monitorListHead = _glfwDestroyMonitor(_glfwLibrary.monitorListHead);
+}
+

src/win32_platform.h

@@ -47,6 +47,7 @@
 
 #include <windows.h>
 #include <mmsystem.h>
+#include <Dbt.h>
 
 // This path may need to be changed if you build GLFW using your own setup
 // We ship and use our own copy of wglext.h since GLFW uses fairly new
@@ -210,6 +211,7 @@ typedef DWORD (WINAPI * TIMEGETTIME_T) (void);
 #define _GLFW_PLATFORM_WINDOW_STATE  _GLFWwindowWin32 Win32
 #define _GLFW_PLATFORM_LIBRARY_STATE _GLFWlibraryWin32 Win32
 #define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextWGL WGL
+#define _GLFW_PLATFORM_MONITOR_STATE _GLFWmonitorWin32 Win32
 
 
 //========================================================================
@@ -318,6 +320,14 @@ typedef struct _GLFWlibraryWin32
 
 } _GLFWlibraryWin32;
 
+//------------------------------------------------------------------------
+// Platform-specific monitor structure
+//------------------------------------------------------------------------
+typedef struct _GLFWmonitorWin32
+{
+    char name[32];
+
+} _GLFWmonitorWin32;
 
 //========================================================================
 // Prototypes for platform specific internal functions
@@ -326,6 +336,11 @@ typedef struct _GLFWlibraryWin32
 // Time
 void _glfwInitTimer(void);
 
+// Monitor support
+void _glfwInitMonitors(void);
+void _glfwRefreshMonitors(void);
+void _glfwTerminateMonitors(void);
+
 // Fullscreen support
 void _glfwSetVideoMode(int* width, int* height,
                        int* bpp, int* refreshRate,

src/win32_window.c

@@ -30,7 +30,6 @@
 
 #include "internal.h"
 
-#include <stdio.h>
 #include <stdlib.h>
 
 
@@ -1079,6 +1078,16 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
 
             break;
         }
+
+        case WM_DEVICECHANGE:
+        {
+            if (DBT_DEVNODES_CHANGED == wParam)
+            {
+                _glfwRefreshMonitors();
+                return TRUE;
+            }
+            break;
+        }
     }
 
     // Pass all unhandled messages to DefWindowProc
@@ -1780,7 +1789,7 @@ void _glfwPlatformPollEvents(void)
     window = _glfwLibrary.activeWindow;
     if (window)
     {
-        window->Win32.cursorCentered = GL_FALSE;
+        window->Win32.cursorCentered = GL_TRUE;
         window->Win32.oldMouseX = window->width / 2;
         window->Win32.oldMouseY = window->height / 2;
     }
@@ -1902,3 +1911,4 @@ void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
     }
 }
 
+

src/x11_fullscreen.c

@@ -316,11 +316,26 @@ struct _glfwResolution
     int height;
 };
 
+int _glfwCompareResolution(const void* left, const void* right)
+{
+    int result = 0;
+    const struct _glfwResolution* leftResolution = left;
+    const struct _glfwResolution* rightResolution = right;
+
+    result = leftResolution->height - rightResolution->height;
+    if (result == 0)
+    {
+       result = leftResolution->width - rightResolution->width;
+    }
+
+    return result;
+}
+
 //========================================================================
 // List available video modes
 //========================================================================
 
-int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
+int _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, GLFWvidmode* list, int maxcount)
 {
     int count, k, l, r, g, b, rgba, gl;
     int depth, screen;
@@ -380,23 +395,37 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
     if (_glfwLibrary.X11.RandR.available)
     {
 #if defined(_GLFW_HAS_XRANDR)
-        XRRScreenConfiguration* sc;
+        XRRScreenResources* resource;
-        XRRScreenSize* sizelist;
+        unsigned int a;
-        int sizecount;
+        resource = XRRGetScreenResources(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
 
-        sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
+        resarray = (struct _glfwResolution*) _glfwMalloc(sizeof(struct _glfwResolution) * monitor->X11.output->nmode);
-        sizelist = XRRConfigSizes(sc, &sizecount);
 
-        resarray = (struct _glfwResolution*) _glfwMalloc(sizeof(struct _glfwResolution) * sizecount);
+        for (k = 0; k < monitor->X11.output->nmode; k++)
-
-        for (k = 0;  k < sizecount;  k++)
         {
-            resarray[rescount].width = sizelist[k].width;
+            for (a = 0; a < resource->nmode; a++)
-            resarray[rescount].height = sizelist[k].height;
+            {
-            rescount++;
+                if (resource->modes[a].id != monitor->X11.output->modes[k])
+                {
+                    continue;
                 }
 
-        XRRFreeScreenConfigInfo(sc);
+                struct _glfwResolution res = {
+                    resource->modes[a].width,
+                    resource->modes[a].height
+                };
+
+                if (!bsearch(&res, resarray, rescount, sizeof(struct _glfwResolution), _glfwCompareResolution))
+                {
+                    resarray[rescount].width  = resource->modes[a].width;
+                    resarray[rescount].height = resource->modes[a].height;
+                    rescount++;
+                    qsort(resarray, rescount, sizeof(struct _glfwResolution), _glfwCompareResolution);
+                }
+            }
+        }
+
+        XRRFreeScreenResources(resource);
 #endif /*_GLFW_HAS_XRANDR*/
     }
     else if (_glfwLibrary.X11.VidMode.available)

src/x11_init.c

@@ -578,6 +578,8 @@ int _glfwPlatformInit(void)
 
     _glfwInitJoysticks();
 
+    _glfwInitMonitors();
+
     // Start the timer
     _glfwInitTimer();
 
@@ -599,6 +601,8 @@ int _glfwPlatformTerminate(void)
 
     terminateDisplay();
 
+    _glfwTerminateMonitors();
+
     _glfwTerminateJoysticks();
 
     // Unload libGL.so if necessary

src/x11_monitor.c

@@ -0,0 +1,136 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    X11 (Unix)
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+#if defined (_GLFW_HAS_XRANDR)
+_GLFWmonitor** _glfwCreateMonitor(_GLFWmonitor** current,
+                                  XRROutputInfo* outputInfo,
+                                  XRRCrtcInfo* crtcInfo)
+{
+    *current = _glfwMalloc(sizeof(_GLFWmonitor));
+    memset(*current, 0, sizeof(_GLFWmonitor));
+
+    (*current)->physicalWidth  = outputInfo->mm_width;
+    (*current)->physicalHeight = outputInfo->mm_height;
+
+    (*current)->name = _glfwMalloc(strlen(outputInfo->name) + 1);
+    memcpy((*current)->name, outputInfo->name, strlen(outputInfo->name) + 1);
+    (*current)->name[strlen(outputInfo->name)] = '\0';
+
+    (*current)->screenX = crtcInfo->x;
+    (*current)->screenY = crtcInfo->y;
+
+    (*current)->X11.output = outputInfo;
+    return &((*current)->next);
+}
+#endif /*_GLFW_HAS_XRANDR*/
+
+_GLFWmonitor* _glfwDestroyMonitor(_GLFWmonitor* monitor)
+{
+    _GLFWmonitor* result;
+
+    result = monitor->next;
+
+#if defined (_GLFW_HAS_XRANDR)
+    XRRFreeOutputInfo(monitor->X11.output);
+#endif /*_GLFW_HAS_XRANDR*/
+
+    _glfwFree(monitor->name);
+    _glfwFree(monitor);
+
+    return result;
+}
+
+void _glfwInitMonitors(void)
+{
+    _glfwLibrary.monitorListHead = NULL;
+
+    if (_glfwLibrary.X11.RandR.available)
+    {
+#if defined (_GLFW_HAS_XRANDR)
+        XRRScreenResources* resources;
+        int outputIDX;
+        _GLFWmonitor** curMonitor;
+
+        curMonitor = &_glfwLibrary.monitorListHead;
+
+        resources = XRRGetScreenResources(_glfwLibrary.X11.display,
+                                          _glfwLibrary.X11.root);
+
+        for (outputIDX = 0; outputIDX < resources->noutput; outputIDX++)
+        {
+            // physical device
+            XRROutputInfo* outputInfo = NULL;
+            // logical surface
+            XRRCrtcInfo* crtcInfo = NULL;
+            int crtcIDX;
+
+            outputInfo = XRRGetOutputInfo(_glfwLibrary.X11.display,
+                                          resources,
+                                          resources->outputs[outputIDX]);
+
+            if (outputInfo->connection == RR_Connected)
+            {
+                for (crtcIDX = 0; crtcIDX < outputInfo->ncrtc; crtcIDX++)
+                {
+                    if (outputInfo->crtc == outputInfo->crtcs[crtcIDX])
+                    {
+                        crtcInfo = XRRGetCrtcInfo(_glfwLibrary.X11.display,
+                                                  resources,
+                                                  outputInfo->crtcs[crtcIDX]);
+                        break;
+                    }
+                }
+
+                curMonitor = _glfwCreateMonitor(curMonitor, outputInfo, crtcInfo);
+
+                // Freeing of the outputInfo is done in _glfwDestroyMonitor
+                XRRFreeCrtcInfo(crtcInfo);
+            }
+        }
+#endif /*_GLFW_HAS_XRANDR*/
+    }
+}
+
+void _glfwTerminateMonitors(void)
+{
+    while (_glfwLibrary.monitorListHead)
+        _glfwLibrary.monitorListHead = _glfwDestroyMonitor(_glfwLibrary.monitorListHead);
+}
+

src/x11_platform.h

@@ -91,6 +91,7 @@
 #define _GLFW_PLATFORM_WINDOW_STATE  _GLFWwindowX11 X11
 #define _GLFW_PLATFORM_LIBRARY_STATE _GLFWlibraryX11 X11
 #define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextGLX GLX
+#define _GLFW_PLATFORM_MONITOR_STATE _GLFWmonitorX11 X11
 
 
 //========================================================================
@@ -247,6 +248,20 @@ GLFWGLOBAL struct {
 } _glfwJoy[GLFW_JOYSTICK_LAST + 1];
 
 
+//------------------------------------------------------------------------
+// Platform-specific window structure
+//------------------------------------------------------------------------
+typedef struct _GLFWmonitorX11
+{
+#if defined(_GLFW_HAS_XRANDR)
+   XRROutputInfo* output;
+#else
+    int dummy;
+#endif /*_GLFW_HAS_XRANDR*/
+
+} _GLFWmonitorX11;
+
+
 //========================================================================
 // Prototypes for platform specific internal functions
 //========================================================================
@@ -264,6 +279,10 @@ void _glfwRestoreVideoMode(int screen);
 void _glfwInitJoysticks(void);
 void _glfwTerminateJoysticks(void);
 
+// Monitors
+void _glfwInitMonitors(void);
+void _glfwTerminateMonitors(void);
+
 // Unicode support
 long _glfwKeySym2Unicode(KeySym keysym);
 

tests/CMakeLists.txt

@@ -2,6 +2,12 @@
 set(STATIC_DEPS libglfwStatic ${GLFW_LIBRARIES} ${OPENGL_glu_LIBRARY})
 set(SHARED_DEPS libglfwShared ${GLFW_LIBRARIES} ${OPENGL_glu_LIBRARY})
 
+if (UNIX AND NOT APPLE AND NOT CYGWIN)
+    find_library(MATH_LIBRARY m)
+    find_library(REALTIME_LIBRARY rt)
+    link_libraries(${MATH_LIBRARY} ${REALTIME_LIBRARY})
+endif (UNIX AND NOT APPLE AND NOT CYGWIN)
+
 include_directories(${GLFW_SOURCE_DIR}/include
                     ${GLFW_SOURCE_DIR}/support
                     ${OPENGL_INCLUDE_DIR})

tests/events.c

@@ -216,6 +216,19 @@ static const char* get_character_string(int character)
     return result;
 }
 
+static const char* get_monitor_event_name(int event)
+{
+    switch (event)
+    {
+        case GLFW_MONITOR_CONNECTED:
+            return "connected";
+        case GLFW_MONITOR_DISCONNECTED:
+            return "disconnected";
+    }
+
+    return NULL;
+}
+
 static void window_size_callback(GLFWwindow window, int width, int height)
 {
     printf("%08x at %0.3f: Window size: %i %i\n",
@@ -330,6 +343,16 @@ static void char_callback(GLFWwindow window, int character)
            get_character_string(character));
 }
 
+void monitor_callback(GLFWmonitor monitor, int event)
+{
+    printf("%08x at %0.3f: Monitor %s %s",
+           counter++,
+           glfwGetTime(),
+           glfwGetMonitorString(monitor, GLFW_MONITOR_NAME),
+           get_monitor_event_name(event));
+
+}
+
 int main(void)
 {
     GLFWwindow window;
@@ -354,6 +377,7 @@ int main(void)
     glfwSetScrollCallback(scroll_callback);
     glfwSetKeyCallback(key_callback);
     glfwSetCharCallback(char_callback);
+    glfwSetMonitorDeviceCallback(monitor_callback);
 
     window = glfwOpenWindow(0, 0, GLFW_WINDOWED, "Event Linter", NULL);
     if (!window)

tests/listmodes.c

@@ -18,6 +18,7 @@ static void print_mode(GLFWvidmode* mode)
 
 int main(void)
 {
+    GLFWmonitor monitor;
     GLFWvidmode dtmode, modes[400];
     int modecount, i;
 
@@ -32,16 +33,30 @@ int main(void)
     printf("Desktop mode: ");
     print_mode(&dtmode);
 
+    monitor = NULL;
+
+    while ((monitor = glfwGetNextMonitor(monitor)))
+    {
+        printf("Monitor name: %s\n"
+               "Physical dimensions: %dmm x %dmm\n"
+               "Logical position: (%d,%d)\n",
+               glfwGetMonitorString(monitor, GLFW_MONITOR_NAME),
+               glfwGetMonitorParam(monitor, GLFW_MONITOR_PHYSICAL_WIDTH),
+               glfwGetMonitorParam(monitor, GLFW_MONITOR_PHYSICAL_HEIGHT),
+               glfwGetMonitorParam(monitor, GLFW_MONITOR_SCREEN_POS_X),
+               glfwGetMonitorParam(monitor, GLFW_MONITOR_SCREEN_POS_Y));
+
         // List available video modes
-    modecount = glfwGetVideoModes(modes, sizeof(modes) / sizeof(GLFWvidmode));
+        modecount = glfwGetVideoModes(monitor, modes, sizeof(modes) / sizeof(GLFWvidmode));
         printf("Available modes:\n");
+
         for (i = 0;  i < modecount;  i++)
         {
             printf("%3i: ", i);
             print_mode(modes + i);
         }
+    }
 
-    glfwTerminate();
     exit(EXIT_SUCCESS);
 }