Merge branch 'clipboard'

include/GL/glfw3.h

@@ -173,6 +173,10 @@ extern "C" {
   #endif
 #endif
 
+/* This is needed for the declaration of size_t.
+ */
+#include <stddef.h>
+
 
 /*************************************************************************
  * GLFW version
@@ -461,6 +465,7 @@ extern "C" {
 #define GLFW_VERSION_UNAVAILABLE  0x00070007
 #define GLFW_PLATFORM_ERROR       0x00070008
 #define GLFW_WINDOW_NOT_ACTIVE    0x00070009
+#define GLFW_FORMAT_UNAVAILABLE   0x0007000A
 
 /* Gamma ramps */
 #define GLFW_GAMMA_RAMP_SIZE      256
@@ -574,6 +579,10 @@ GLFWAPI int glfwGetJoystickParam(int joy, int param);
 GLFWAPI int glfwGetJoystickPos(int joy, float* pos, int numaxes);
 GLFWAPI int glfwGetJoystickButtons(int joy, unsigned char* buttons, int numbuttons);
 
+/* Clipboard */
+GLFWAPI void glfwSetClipboardString(GLFWwindow window, const char* string);
+GLFWAPI size_t glfwGetClipboardString(GLFWwindow window, char* string, size_t size);
+
 /* Time */
 GLFWAPI double glfwGetTime(void);
 GLFWAPI void   glfwSetTime(double time);

readme.html

@@ -277,6 +277,7 @@ version of GLFW.</p>
   <li>Added <code>glfwGetWindowPos</code> function for querying the position of the specified window</li>
   <li>Added <code>glfwSetWindowFocusCallback</code> function and <code>GLFWwindowfocusfun</code> type for receiving window focus events</li>
   <li>Added <code>glfwSetWindowIconifyCallback</code> function and <code>GLFWwindowiconifyfun</code> type for receiving window iconification events</li>
+  <li>Added <code>glfwGetClipboardString</code> and <code>glfwSetClipboardString</code> functions for interacting with the system clipboard</li>
   <li>Added <code>glfwGetCurrentContext</code> function for retrieving the window whose OpenGL context is current</li>
   <li>Added <code>glfwCopyContext</code> function for copying OpenGL state categories between contexts</li>
   <li>Added <code>GLFW_OPENGL_ES2_PROFILE</code> profile for creating OpenGL ES 2.0 contexts using the <code>GLX_EXT_create_context_es2_profile</code> and <code>WGL_EXT_create_context_es2_profile</code> extensions</li>
@@ -850,7 +851,7 @@ their skills.  Special thanks go out to:</p>
   adding logic for the <code>GLFW_ICON</code> resource</li>
 
   <li>Ralph Eastwood, for the initial design and implementation of the gamma
-  correction API</li>
+  correction and clipboard APIs</li>
 
   <li>GeO4d, for the implementation of cursor enter/leave notifications on
   Win32.</li>

src/CMakeLists.txt

@@ -4,29 +4,27 @@ include_directories(${GLFW_SOURCE_DIR}/src
                     ${glfw_INCLUDE_DIRS})
 
 set(common_HEADERS ${GLFW_SOURCE_DIR}/include/GL/glfw3.h internal.h)
-set(common_SOURCES error.c fullscreen.c gamma.c init.c input.c
+set(common_SOURCES clipboard.c error.c fullscreen.c gamma.c init.c input.c
                    joystick.c opengl.c time.c window.c)
 
 if (_GLFW_COCOA_NSGL)
     set(glfw_HEADERS ${common_HEADERS} cocoa_platform.h)
-    set(glfw_SOURCES ${common_SOURCES} cocoa_fullscreen.m cocoa_gamma.c
-                     cocoa_init.m cocoa_input.m cocoa_joystick.m
+    set(glfw_SOURCES ${common_SOURCES} cocoa_clipboard.m cocoa_fullscreen.m
+                     cocoa_gamma.c cocoa_init.m cocoa_input.m cocoa_joystick.m
                      cocoa_opengl.m cocoa_time.c cocoa_window.m)
 
     # For some reason, CMake doesn't know about .m
     set_source_files_properties(${glfw_SOURCES} PROPERTIES LANGUAGE C)
 elseif (_GLFW_WIN32_WGL)
     set(glfw_HEADERS ${common_HEADERS} win32_platform.h)
-    set(glfw_SOURCES ${common_SOURCES} win32_fullscreen.c win32_gamma.c
-                     win32_init.c win32_input.c win32_joystick.c
-                     win32_opengl.c win32_time.c win32_window.c
-                     win32_dllmain.c)
+    set(glfw_SOURCES ${common_SOURCES} win32_clipboard.c win32_fullscreen.c
+                     win32_gamma.c win32_init.c win32_input.c win32_joystick.c
+                     win32_opengl.c win32_time.c win32_window.c win32_dllmain.c)
 elseif (_GLFW_X11_GLX)
     set(glfw_HEADERS ${common_HEADERS} x11_platform.h)
-    set(glfw_SOURCES ${common_SOURCES} x11_fullscreen.c x11_gamma.c
-                     x11_init.c x11_input.c x11_joystick.c
-                     x11_keysym2unicode.c x11_opengl.c x11_time.c
-                     x11_window.c)
+    set(glfw_SOURCES ${common_SOURCES} x11_clipboard.c x11_fullscreen.c
+                     x11_gamma.c x11_init.c x11_input.c x11_joystick.c
+                     x11_keysym2unicode.c x11_opengl.c x11_time.c x11_window.c)
 endif()
 
 add_library(glfw ${glfw_SOURCES} ${glfw_HEADERS})

src/clipboard.c

@@ -0,0 +1,77 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    Any
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 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 <math.h>
+#include <string.h>
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                        GLFW public API                       //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Set the clipboard contents
+//========================================================================
+
+GLFWAPI void glfwSetClipboardString(GLFWwindow handle, const char* string)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return;
+    }
+
+    _glfwPlatformSetClipboardString(window, string);
+}
+
+
+//========================================================================
+// Return the current clipboard contents
+//========================================================================
+
+GLFWAPI size_t glfwGetClipboardString(GLFWwindow handle, char* string, size_t size)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwSetError(GLFW_NOT_INITIALIZED, NULL);
+        return 0;
+    }
+
+    if (!string || !size)
+        return 0;
+
+    return _glfwPlatformGetClipboardString(window, string, size);
+}
+

src/cocoa_clipboard.m

@@ -0,0 +1,87 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    Cocoa/NSOpenGL
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 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 <limits.h>
+#include <string.h>
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Set the clipboard contents
+//========================================================================
+
+void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
+{
+    NSArray* types = [NSArray arrayWithObjects:NSStringPboardType, nil];
+
+    NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+    [pasteboard declareTypes:types owner:nil];
+    [pasteboard setString:[NSString stringWithUTF8String:string]
+                  forType:NSStringPboardType];
+}
+
+
+//========================================================================
+// Return the current clipboard contents
+//========================================================================
+
+size_t _glfwPlatformGetClipboardString(_GLFWwindow* window, char* string, size_t size)
+{
+    const char* source;
+    size_t targetSize;
+    NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+
+    if (![[pasteboard types] containsObject:NSStringPboardType])
+    {
+        _glfwSetError(GLFW_FORMAT_UNAVAILABLE, NULL);
+        return 0;
+    }
+
+    NSString* object = [pasteboard stringForType:NSStringPboardType];
+    if (!object)
+    {
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Cocoa/NSGL: Failed to retrieve object from pasteboard");
+        return 0;
+    }
+
+    source = [object UTF8String];
+    targetSize = strlen(source) + 1;
+    if (targetSize > size)
+        targetSize = size;
+
+    strlcpy(string, source, targetSize);
+    return 0;
+}
+

src/cocoa_joystick.m

@@ -572,7 +572,7 @@ int _glfwPlatformGetJoystickPos(int joy, float* pos, int numaxes)
 int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
                                     int numbuttons)
 {
-    int button;
+    int i, j, button;
 
     if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
         return 0;
@@ -599,13 +599,13 @@ int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
 
     const int directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 }; // Bit fields of button presses for each direction, including nil
 
-    for (int i = 0;  i < joystick.numHats;  i++)
+    for (i = 0;  i < joystick.numHats;  i++)
     {
         _glfwJoystickElement* hat = (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick.hats, i);
         int value = hat->value;
         if (value < 0 || value > 8) value = 8;
 
-        for (int j = 0; j < 4 && button < numbuttons; j++)
+        for (j = 0; j < 4 && button < numbuttons; j++)
         {
             buttons[button++] = directions[value] & (1 << j) ? GLFW_PRESS : GLFW_RELEASE;
         }

src/error.c

@@ -109,6 +109,8 @@ GLFWAPI const char* glfwErrorString(int error)
             return "A platform-specific error occurred";
         case GLFW_WINDOW_NOT_ACTIVE:
             return "The specified window is not active";
+        case GLFW_FORMAT_UNAVAILABLE:
+            return "The requested format is unavailable";
     }
 
     return "ERROR: UNKNOWN ERROR TOKEN PASSED TO glfwErrorString";

src/internal.h

@@ -288,6 +288,10 @@ void _glfwPlatformGetDesktopMode(GLFWvidmode* mode);
 void _glfwPlatformGetGammaRamp(GLFWgammaramp* ramp);
 void _glfwPlatformSetGammaRamp(const GLFWgammaramp* ramp);
 
+// Clipboard
+void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string);
+size_t _glfwPlatformGetClipboardString(_GLFWwindow* window, char *data, size_t size);
+
 // Joystick
 int _glfwPlatformGetJoystickParam(int joy, int param);
 int _glfwPlatformGetJoystickPos(int joy, float* pos, int numaxes);

src/win32_clipboard.c

@@ -0,0 +1,149 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    Win32/WGL
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 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 <limits.h>
+#include <string.h>
+#include <stdlib.h>
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Set the clipboard contents
+//========================================================================
+
+void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
+{
+    WCHAR* wideString;
+    HANDLE stringHandle;
+    size_t wideSize;
+
+    wideString = _glfwCreateWideStringFromUTF8(string);
+    if (!wideString)
+    {
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                        "Win32/WGL: Failed to convert clipboard string to "
+                        "wide string");
+        return;
+    }
+
+    wideSize = (wcslen(wideString) + 1) * sizeof(WCHAR);
+
+    stringHandle = GlobalAlloc(GMEM_MOVEABLE, wideSize);
+    if (!stringHandle)
+    {
+        free(wideString);
+
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Win32/WGL: Failed to allocate global handle for clipboard");
+        return;
+    }
+
+    memcpy(GlobalLock(stringHandle), wideString, wideSize);
+    GlobalUnlock(stringHandle);
+
+    if (!OpenClipboard(window->Win32.handle))
+    {
+        GlobalFree(stringHandle);
+        free(wideString);
+
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Win32/WGL: Failed to open clipboard");
+        return;
+    }
+
+    EmptyClipboard();
+    SetClipboardData(CF_UNICODETEXT, stringHandle);
+    CloseClipboard();
+
+    free(wideString);
+}
+
+
+//========================================================================
+// Return the current clipboard contents
+//========================================================================
+
+size_t _glfwPlatformGetClipboardString(_GLFWwindow* window, char* string, size_t size)
+{
+    HANDLE stringHandle;
+    char* utf8String;
+    size_t utf8Size;
+
+    if (!IsClipboardFormatAvailable(CF_UNICODETEXT))
+    {
+        _glfwSetError(GLFW_FORMAT_UNAVAILABLE, NULL);
+        return 0;
+    }
+
+    if (!OpenClipboard(window->Win32.handle))
+    {
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Win32/WGL: Failed to open clipboard");
+        return 0;
+    }
+
+    stringHandle = GetClipboardData(CF_UNICODETEXT);
+    if (!stringHandle)
+    {
+        CloseClipboard();
+
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Win32/WGL: Failed to retrieve clipboard data");
+        return 0;
+    }
+
+    utf8String = _glfwCreateUTF8FromWideString(GlobalLock(stringHandle));
+    GlobalUnlock(stringHandle);
+    CloseClipboard();
+
+    if (!utf8String)
+    {
+        _glfwSetError(GLFW_PLATFORM_ERROR,
+                      "Win32/WGL: Failed to convert wide string to UTF-8");
+        return 0;
+    }
+
+    utf8Size = strlen(utf8String) + 1;
+    if (utf8Size > size)
+    {
+        memcpy(string, utf8String, size);
+        string[size - 1] = '\0';
+    }
+    else
+        memcpy(string, utf8String, utf8Size);
+
+    free(utf8String);
+	return utf8Size;
+}
+

src/x11_clipboard.c

@@ -0,0 +1,201 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    X11/GLX
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 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 <stdio.h>
+#include <limits.h>
+#include <string.h>
+#include <stdlib.h>
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW internal API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Save the contents of the specified property
+//========================================================================
+
+GLboolean _glfwReadSelection(XSelectionEvent* request)
+{
+    Atom actualType;
+    int actualFormat;
+    unsigned long itemCount, bytesAfter;
+    char* data;
+
+    if (request->property == None)
+        return GL_FALSE;
+
+    XGetWindowProperty(_glfwLibrary.X11.display,
+                       request->requestor,
+                       request->property,
+                       0, LONG_MAX,
+                       False,
+                       request->target,
+                       &actualType,
+                       &actualFormat,
+                       &itemCount,
+                       &bytesAfter,
+                       (unsigned char**) &data);
+
+    if (actualType == None)
+        return GL_FALSE;
+
+    free(_glfwLibrary.X11.selection.string);
+    _glfwLibrary.X11.selection.string = strdup(data);
+
+    XFree(data);
+    return GL_TRUE;
+}
+
+
+//========================================================================
+// Set the specified property to the contents of the requested selection
+//========================================================================
+
+Atom _glfwWriteSelection(XSelectionRequestEvent* request)
+{
+    int i;
+    Atom property = request->property;
+
+    if (property == None)
+        property = _glfwLibrary.X11.selection.property;
+
+    if (request->target == _glfwLibrary.X11.selection.targets)
+    {
+        // The list of supported targets was requested
+
+        XChangeProperty(_glfwLibrary.X11.display,
+                        request->requestor,
+                        property,
+                        XA_ATOM,
+                        32,
+                        PropModeReplace,
+                        (unsigned char*) _glfwLibrary.X11.selection.formats,
+                        _GLFW_CLIPBOARD_FORMAT_COUNT);
+
+        return property;
+    }
+
+    for (i = 0;  i < _GLFW_CLIPBOARD_FORMAT_COUNT;  i++)
+    {
+        if (request->target == _glfwLibrary.X11.selection.formats[i])
+        {
+            // The requested format is one we support
+
+            XChangeProperty(_glfwLibrary.X11.display,
+                            request->requestor,
+                            property,
+                            request->target,
+                            8,
+                            PropModeReplace,
+                            (unsigned char*) _glfwLibrary.X11.selection.string,
+                            strlen(_glfwLibrary.X11.selection.string));
+
+            return property;
+        }
+    }
+
+    return None;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Set the clipboard contents
+//========================================================================
+
+void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
+{
+    // Store the new string in preparation for a selection request event
+    free(_glfwLibrary.X11.selection.string);
+    _glfwLibrary.X11.selection.string = strdup(string);
+
+    // Set the specified window as owner of the selection
+    XSetSelectionOwner(_glfwLibrary.X11.display,
+                       _glfwLibrary.X11.selection.atom,
+                       window->X11.handle, CurrentTime);
+}
+
+
+//========================================================================
+// Return the current clipboard contents
+//========================================================================
+
+size_t _glfwPlatformGetClipboardString(_GLFWwindow* window, char* string, size_t size)
+{
+    int i;
+    size_t sourceSize, targetSize;
+
+    _glfwLibrary.X11.selection.status = _GLFW_CONVERSION_INACTIVE;
+
+    for (i = 0;  i < _GLFW_CLIPBOARD_FORMAT_COUNT;  i++)
+    {
+        // Request conversion to the selected format
+        _glfwLibrary.X11.selection.target =
+            _glfwLibrary.X11.selection.formats[i];
+
+        XConvertSelection(_glfwLibrary.X11.display,
+                          _glfwLibrary.X11.selection.atom,
+                          _glfwLibrary.X11.selection.target,
+                          _glfwLibrary.X11.selection.property,
+                          window->X11.handle, CurrentTime);
+
+        // Process the resulting SelectionNotify event
+        XSync(_glfwLibrary.X11.display, False);
+        while (_glfwLibrary.X11.selection.status == _GLFW_CONVERSION_INACTIVE)
+            _glfwPlatformWaitEvents();
+
+        if (_glfwLibrary.X11.selection.status == _GLFW_CONVERSION_SUCCEEDED)
+            break;
+    }
+
+    if (_glfwLibrary.X11.selection.status == _GLFW_CONVERSION_FAILED)
+    {
+        _glfwSetError(GLFW_FORMAT_UNAVAILABLE,
+                      "X11/GLX: Failed to convert selection to string");
+        return 0;
+    }
+
+    sourceSize = strlen(_glfwLibrary.X11.selection.string) + 1;
+
+    targetSize = sourceSize;
+    if (targetSize > size)
+        targetSize = size;
+
+    memcpy(string, _glfwLibrary.X11.selection.string, targetSize);
+    string[targetSize - 1] = '\0';
+
+    return sourceSize;
+}
+

src/x11_init.c

@@ -597,6 +597,26 @@ static GLboolean initDisplay(void)
     // the keyboard mapping.
     updateKeyCodeLUT();
 
+    // Find or create selection property atom
+    _glfwLibrary.X11.selection.property =
+        XInternAtom(_glfwLibrary.X11.display, "GLFW_SELECTION", False);
+
+    // Find or create clipboard atom
+    _glfwLibrary.X11.selection.atom =
+        XInternAtom(_glfwLibrary.X11.display, "CLIPBOARD", False);
+
+    // Find or create selection target atoms
+    _glfwLibrary.X11.selection.formats[_GLFW_CLIPBOARD_FORMAT_UTF8] =
+        XInternAtom(_glfwLibrary.X11.display, "UTF8_STRING", False);
+    _glfwLibrary.X11.selection.formats[_GLFW_CLIPBOARD_FORMAT_COMPOUND] =
+        XInternAtom(_glfwLibrary.X11.display, "COMPOUND_STRING", False);
+    _glfwLibrary.X11.selection.formats[_GLFW_CLIPBOARD_FORMAT_STRING] =
+        XA_STRING;
+
+    _glfwLibrary.X11.selection.targets = XInternAtom(_glfwLibrary.X11.display,
+                                                     "TARGETS",
+                                                     False);
+
     return GL_TRUE;
 }
 
@@ -762,6 +782,10 @@ int _glfwPlatformTerminate(void)
     }
 #endif
 
+    // Free clipboard memory
+    if (_glfwLibrary.X11.selection.string)
+        free(_glfwLibrary.X11.selection.string);
+
     return GL_TRUE;
 }
 

src/x11_platform.h

@@ -85,6 +85,17 @@
 #define _GLFW_PLATFORM_LIBRARY_STATE _GLFWlibraryX11 X11
 #define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextGLX GLX
 
+// Clipboard format atom indices
+#define _GLFW_CLIPBOARD_FORMAT_UTF8     0
+#define _GLFW_CLIPBOARD_FORMAT_COMPOUND 1
+#define _GLFW_CLIPBOARD_FORMAT_STRING   2
+#define _GLFW_CLIPBOARD_FORMAT_COUNT    3
+
+// Clipboard conversion status tokens
+#define _GLFW_CONVERSION_INACTIVE       0
+#define _GLFW_CONVERSION_SUCCEEDED      1
+#define _GLFW_CONVERSION_FAILED         2
+
 
 //========================================================================
 // GLFW platform specific types
@@ -226,6 +237,17 @@ typedef struct _GLFWlibraryX11
         uint64_t    base;
     } timer;
 
+    // Selection data
+    struct {
+        Atom atom;
+        Atom formats[_GLFW_CLIPBOARD_FORMAT_COUNT];
+        char* string;
+        Atom target;
+        Atom targets;
+        Atom property;
+        int status;
+    } selection;
+
 #if defined(_GLFW_DLOPEN_LIBGL)
     void*           libGL;  // dlopen handle for libGL.so
 #endif
@@ -265,5 +287,11 @@ void _glfwTerminateJoysticks(void);
 // Unicode support
 long _glfwKeySym2Unicode(KeySym keysym);
 
+// Clipboard handling
+GLboolean _glfwReadSelection(XSelectionEvent* request);
+Atom _glfwWriteSelection(XSelectionRequestEvent* request);
+
+// Event processing
+void _glfwProcessPendingEvents(void);
 
 #endif // _platform_h_

src/x11_window.c

@@ -1241,6 +1241,52 @@ static void processSingleEvent(void)
             break;
         }
 
+        case SelectionClear:
+        {
+            // The ownership of the selection was lost
+
+            free(_glfwLibrary.X11.selection.string);
+            _glfwLibrary.X11.selection.string = NULL;
+            break;
+        }
+
+        case SelectionNotify:
+        {
+            // The selection conversion status is available
+
+            XSelectionEvent* request = &event.xselection;
+
+            if (_glfwReadSelection(request))
+                _glfwLibrary.X11.selection.status = _GLFW_CONVERSION_SUCCEEDED;
+            else
+                _glfwLibrary.X11.selection.status = _GLFW_CONVERSION_FAILED;
+
+            break;
+        }
+
+        case SelectionRequest:
+        {
+            // The contents of the selection was requested
+
+            XSelectionRequestEvent* request = &event.xselectionrequest;
+
+            XEvent response;
+            memset(&response, 0, sizeof(response));
+
+            response.xselection.property = _glfwWriteSelection(request);
+            response.xselection.type = SelectionNotify;
+            response.xselection.display = request->display;
+            response.xselection.requestor = request->requestor;
+            response.xselection.selection = request->selection;
+            response.xselection.target = request->target;
+            response.xselection.time = request->time;
+
+            XSendEvent(_glfwLibrary.X11.display,
+                       request->requestor,
+                       False, 0, &response);
+            break;
+        }
+
         // Was the window destroyed?
         case DestroyNotify:
             return;
@@ -1264,6 +1310,23 @@ static void processSingleEvent(void)
 }
 
 
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW internal API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Processes all pending events
+//========================================================================
+
+void _glfwProcessPendingEvents(void)
+{
+    int i, count = XPending(_glfwLibrary.X11.display);
+
+    for (i = 0;  i < count;  i++)
+        processSingleEvent();
+}
+
+
 //////////////////////////////////////////////////////////////////////////
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////
@@ -1334,7 +1397,7 @@ int _glfwPlatformOpenWindow(_GLFWwindow* window,
     }
 
     // Process the window map event and any other that may have arrived
-    _glfwPlatformPollEvents();
+    _glfwProcessPendingEvents();
 
     // Retrieve and set initial cursor position
     {

tests/CMakeLists.txt

@@ -11,6 +11,8 @@ endif()
 include_directories(${GLFW_SOURCE_DIR}/include
                     ${GLFW_SOURCE_DIR}/support
                     ${OPENGL_INCLUDE_DIR})
+add_executable(clipboard clipboard.c)
+target_link_libraries(clipboard ${STATIC_DEPS})
 
 add_executable(defaults defaults.c)
 add_executable(events events.c)

tests/clipboard.c

@@ -0,0 +1,156 @@
+//========================================================================
+// Gamma correction test program
+// Copyright (c) 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.
+//
+//========================================================================
+//
+// This program is used to test the clipboard functionality.
+//
+//========================================================================
+
+#include <GL/glfw3.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "getopt.h"
+
+static void usage(void)
+{
+    printf("Usage: clipboard [-h]\n");
+}
+
+static GLboolean control_is_down(GLFWwindow window)
+{
+    return glfwGetKey(window, GLFW_KEY_LEFT_CONTROL) ||
+           glfwGetKey(window, GLFW_KEY_RIGHT_CONTROL);
+}
+
+static void key_callback(GLFWwindow window, int key, int action)
+{
+    if (action != GLFW_PRESS)
+        return;
+
+    switch (key)
+    {
+        case GLFW_KEY_ESCAPE:
+            glfwCloseWindow(window);
+            break;
+
+        case GLFW_KEY_V:
+            if (control_is_down(window))
+            {
+                char buffer[4096];
+                size_t size;
+
+                printf("Paste test.\n");
+
+                size = glfwGetClipboardString(window, buffer, sizeof(buffer));
+                if (size >= sizeof(buffer))
+                    printf("Buffer wasn't big enough to hold clipboard data.\n");
+
+                printf("[%lu]: %s\n", (unsigned long) size, buffer);
+            }
+            break;
+
+        case GLFW_KEY_C:
+            if (control_is_down(window))
+            {
+                const char* string = "Hello GLFW World!";
+                glfwSetClipboardString(window, string);
+                printf("Setting clipboard to: %s\n", string);
+            }
+            break;
+    }
+}
+
+static void size_callback(GLFWwindow window, int width, int height)
+{
+    glViewport(0, 0, width, height);
+}
+
+static void error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Error: %s in %s\n", glfwErrorString(error), description);
+}
+
+int main(int argc, char** argv)
+{
+    int ch;
+    GLFWwindow window;
+
+    while ((ch = getopt(argc, argv, "h")) != -1)
+    {
+        switch (ch)
+        {
+            case 'h':
+                usage();
+                exit(EXIT_SUCCESS);
+
+            default:
+                usage();
+                exit(EXIT_FAILURE);
+        }
+    }
+
+    glfwSetErrorCallback(error_callback);
+
+    if (!glfwInit())
+    {
+        fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
+        exit(EXIT_FAILURE);
+    }
+
+    window = glfwOpenWindow(0, 0, GLFW_WINDOWED, "Clipboard Test", NULL);
+    if (!window)
+    {
+        glfwTerminate();
+
+        fprintf(stderr, "Failed to open GLFW window: %s\n", glfwErrorString(glfwGetError()));
+        exit(EXIT_FAILURE);
+    }
+
+    glfwSwapInterval(1);
+    glfwSetKeyCallback(key_callback);
+    glfwSetWindowSizeCallback(size_callback);
+
+    glMatrixMode(GL_PROJECTION);
+    glOrtho(-1.f, 1.f, -1.f, 1.f, -1.f, 1.f);
+    glMatrixMode(GL_MODELVIEW);
+
+    glClearColor(0.5f, 0.5f, 0.5f, 0);
+
+    while (glfwIsWindow(window))
+    {
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        glColor3f(0.8f, 0.2f, 0.4f);
+        glRectf(-0.5f, -0.5f, 0.5f, 0.5f);
+
+        glfwSwapBuffers();
+        glfwPollEvents();
+    }
+
+    glfwTerminate();
+    exit(EXIT_SUCCESS);
+}
+