Add extended drag & drop callback functions

include/GLFW/glfw3.h

@@ -1899,6 +1899,9 @@ typedef void (* GLFWcharfun)(GLFWwindow* window, unsigned int codepoint);
  */
 typedef void (* GLFWcharmodsfun)(GLFWwindow* window, unsigned int codepoint, int mods);
 
+// TODO doc
+typedef void (* GLFWdragfun)(GLFWwindow* window, int event, double xpos, double ypos, int availableFormats, int *format, int availableActions, int *action);
+
 /*! @brief The function pointer type for path drop callbacks.
  *
  *  This is the function pointer type for path drop callbacks.  A path drop
@@ -1923,6 +1926,9 @@ typedef void (* GLFWcharmodsfun)(GLFWwindow* window, unsigned int codepoint, int
  */
 typedef void (* GLFWdropfun)(GLFWwindow* window, int path_count, const char* paths[]);
 
+// TODO doc
+typedef void (* GLFWdropfunex)(GLFWwindow* window, int format, int data_count, void *data, int *action);
+
 /*! @brief The function pointer type for monitor configuration callbacks.
  *
  *  This is the function pointer type for monitor configuration callbacks.
@@ -5303,6 +5309,9 @@ GLFWAPI GLFWcursorenterfun glfwSetCursorEnterCallback(GLFWwindow* window, GLFWcu
  */
 GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* window, GLFWscrollfun callback);
 
+// TODO doc
+GLFWAPI GLFWdragfun glfwSetDragCallback(GLFWwindow* window, GLFWdragfun callback);
+
 /*! @brief Sets the path drop callback.
  *
  *  This function sets the path drop callback of the specified window, which is
@@ -5340,6 +5349,9 @@ GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* window, GLFWscrollfun ca
  */
 GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* window, GLFWdropfun callback);
 
+// TODO doc
+GLFWAPI GLFWdropfunex glfwSetDropCallbackEx(GLFWwindow* window, GLFWdropfunex callback);
+
 /*! @brief Returns whether the specified joystick is present.
  *
  *  This function returns whether the specified joystick is present.

src/input.c

@@ -401,6 +401,14 @@ void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered)
         window->callbacks.cursorEnter((GLFWwindow*) window, entered);
 }
 
+// Notifies shared code of data being dragged in/over/out of a window
+//
+void _glfwInputDrag(_GLFWwindow* window, int event, double xpos, double ypos, int availableFormats, int *format, int availableActions, int *action)
+{
+    if (window->callbacks.drag)
+        window->callbacks.drag((GLFWwindow*) window, event, xpos, ypos, availableFormats, format, availableActions, action);
+}
+
 // Notifies shared code of files or directories dropped on a window
 //
 void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
@@ -413,6 +421,14 @@ void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
         window->callbacks.drop((GLFWwindow*) window, count, paths);
 }
 
+// Notifies shared code of data dropped on a window
+//
+void _glfwInputDropEx(_GLFWwindow* window, int format, int data_count, void *data, int *action)
+{
+    if (window->callbacks.dropex)
+        window->callbacks.dropex((GLFWwindow*) window, format, data_count, data, action);
+}
+
 // Notifies shared code of a joystick connection or disconnection
 //
 void _glfwInputJoystick(_GLFWjoystick* js, int event)
@@ -1011,6 +1027,16 @@ GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* handle,
     return cbfun;
 }
 
+GLFWAPI GLFWdragfun glfwSetDragCallback(GLFWwindow* handle, GLFWdragfun cbfun)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+    assert(window != NULL);
+
+    _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
+    _GLFW_SWAP(GLFWdragfun, window->callbacks.drag, cbfun);
+    return cbfun;
+}
+
 GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* handle, GLFWdropfun cbfun)
 {
     _GLFWwindow* window = (_GLFWwindow*) handle;
@@ -1021,6 +1047,16 @@ GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* handle, GLFWdropfun cbfun)
     return cbfun;
 }
 
+GLFWAPI GLFWdropfunex glfwSetDropCallbackEx(GLFWwindow* handle, GLFWdropfunex cbfun)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+    assert(window != NULL);
+
+    _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
+    _GLFW_SWAP(GLFWdropfunex, window->callbacks.dropex, cbfun);
+    return cbfun;
+}
+
 GLFWAPI int glfwJoystickPresent(int jid)
 {
     _GLFWjoystick* js;

src/internal.h

@@ -582,7 +582,9 @@ struct _GLFWwindow
         GLFWkeyfun                key;
         GLFWcharfun               character;
         GLFWcharmodsfun           charmods;
+        GLFWdragfun               drag;
         GLFWdropfun               drop;
+        GLFWdropfunex             dropex;
     } callbacks;
 
     // This is defined in platform.h
@@ -937,7 +939,9 @@ void _glfwInputScroll(_GLFWwindow* window, double xoffset, double yoffset);
 void _glfwInputMouseClick(_GLFWwindow* window, int button, int action, int mods);
 void _glfwInputCursorPos(_GLFWwindow* window, double xpos, double ypos);
 void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered);
+void _glfwInputDrag(_GLFWwindow* window, int event, double xpos, double ypos, int availableFormats, int *format, int availableActions, int *action);
 void _glfwInputDrop(_GLFWwindow* window, int count, const char** names);
+void _glfwInputDropEx(_GLFWwindow* window, int format, int data_count, void *data, int *action);
 void _glfwInputJoystick(_GLFWjoystick* js, int event);
 void _glfwInputJoystickAxis(_GLFWjoystick* js, int axis, float value);
 void _glfwInputJoystickButton(_GLFWjoystick* js, int button, char value);