//========================================================================
// GLFW 3.1 - 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>
#if defined(_MSC_VER)
#include <malloc.h>
#endif
// Internal key state used for sticky keys
#define _GLFW_STICK 3
// Sets the cursor mode for the specified window
//
static void setCursorMode(_GLFWwindow* window, int newMode)
{
const int oldMode = window->cursorMode;
if (newMode != GLFW_CURSOR_NORMAL &&
newMode != GLFW_CURSOR_HIDDEN &&
newMode != GLFW_CURSOR_DISABLED)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return;
}
if (oldMode == newMode)
return;
window->cursorMode = newMode;
if (_glfw.focusedWindow == window)
{
if (oldMode == GLFW_CURSOR_DISABLED)
{
_glfwPlatformSetCursorPos(window,
_glfw.cursorPosX,
_glfw.cursorPosY);
}
else if (newMode == GLFW_CURSOR_DISABLED)
{
int width, height;
_glfwPlatformGetCursorPos(window,
&_glfw.cursorPosX,
&_glfw.cursorPosY);
window->cursorPosX = _glfw.cursorPosX;
window->cursorPosY = _glfw.cursorPosY;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2, height / 2);
}
_glfwPlatformApplyCursorMode(window);
}
}
// Set sticky keys mode for the specified window
//
static void setStickyKeys(_GLFWwindow* window, int enabled)
{
if (window->stickyKeys == enabled)
return;
if (!enabled)
{
int i;
// Release all sticky keys
for (i = 0; i <= GLFW_KEY_LAST; i++)
{
if (window->keys[i] == _GLFW_STICK)
window->keys[i] = GLFW_RELEASE;
}
}
window->stickyKeys = enabled;
}
// Set sticky mouse buttons mode for the specified window
//
static void setStickyMouseButtons(_GLFWwindow* window, int enabled)
{
if (window->stickyMouseButtons == enabled)
return;
if (!enabled)
{
int i;
// Release all sticky mouse buttons
for (i = 0; i <= GLFW_MOUSE_BUTTON_LAST; i++)
{
if (window->mouseButtons[i] == _GLFW_STICK)
window->mouseButtons[i] = GLFW_RELEASE;
}
}
window->stickyMouseButtons = enabled;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW event API //////
//////////////////////////////////////////////////////////////////////////
void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key >= 0 && key <= GLFW_KEY_LAST)
{
GLboolean repeated = GL_FALSE;
if (action == GLFW_RELEASE && window->keys[key] == GLFW_RELEASE)
return;
if (action == GLFW_PRESS && window->keys[key] == GLFW_PRESS)
repeated = GL_TRUE;
if (action == GLFW_RELEASE && window->stickyKeys)
window->keys[key] = _GLFW_STICK;
else
window->keys[key] = (char) action;
if (repeated)
action = GLFW_REPEAT;
}
if (window->callbacks.key)
window->callbacks.key((GLFWwindow*) window, key, scancode, action, mods);
}
void _glfwInputChar(_GLFWwindow* window, unsigned int codepoint, int mods, int plain)
{
if (codepoint < 32 || (codepoint > 126 && codepoint < 160))
return;
if (window->callbacks.charmods)
window->callbacks.charmods((GLFWwindow*) window, codepoint, mods);
if (plain)
{
if (window->callbacks.character)
window->callbacks.character((GLFWwindow*) window, codepoint);
}
}
void _glfwInputScroll(_GLFWwindow* window, double xoffset, double yoffset)
{
if (window->callbacks.scroll)
window->callbacks.scroll((GLFWwindow*) window, xoffset, yoffset);
}
void _glfwInputMouseClick(_GLFWwindow* window, int button, int action, int mods)
{
if (button < 0 || button > GLFW_MOUSE_BUTTON_LAST)
return;
// Register mouse button action
if (action == GLFW_RELEASE && window->stickyMouseButtons)
window->mouseButtons[button] = _GLFW_STICK;
else
window->mouseButtons[button] = (char) action;
if (window->callbacks.mouseButton)
window->callbacks.mouseButton((GLFWwindow*) window, button, action, mods);
}
void _glfwInputCursorMotion(_GLFWwindow* window, double x, double y)
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (x == 0.0 && y == 0.0)
return;
window->cursorPosX += x;
window->cursorPosY += y;
x = window->cursorPosX;
y = window->cursorPosY;
}
if (window->callbacks.cursorPos)
window->callbacks.cursorPos((GLFWwindow*) window, x, y);
}
void _glfwInputCursorEnter(_GLFWwindow* window, int entered)
{
if (window->callbacks.cursorEnter)
window->callbacks.cursorEnter((GLFWwindow*) window, entered);
}
void _glfwInputDrop(_GLFWwindow* window, int count, const char** names)
{
if (window->callbacks.drop)
window->callbacks.drop((GLFWwindow*) window, count, names);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW public API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI int glfwGetInputMode(GLFWwindow* handle, int mode)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(0);
switch (mode)
{
case GLFW_CURSOR:
return window->cursorMode;
case GLFW_STICKY_KEYS:
return window->stickyKeys;
case GLFW_STICKY_MOUSE_BUTTONS:
return window->stickyMouseButtons;
default:
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return 0;
}
}
GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT();
switch (mode)
{
case GLFW_CURSOR:
setCursorMode(window, value);
break;
case GLFW_STICKY_KEYS:
setStickyKeys(window, value ? GL_TRUE : GL_FALSE);
break;
case GLFW_STICKY_MOUSE_BUTTONS:
setStickyMouseButtons(window, value ? GL_TRUE : GL_FALSE);
break;
default:
_glfwInputError(GLFW_INVALID_ENUM, NULL);
break;
}
}
GLFWAPI int glfwGetKey(GLFWwindow* handle, int key)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_RELEASE);
if (key < 0 || key > GLFW_KEY_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "The specified key is invalid");
return GLFW_RELEASE;
}
if (window->keys[key] == _GLFW_STICK)
{
// Sticky mode: release key now
window->keys[key] = GLFW_RELEASE;
return GLFW_PRESS;
}
return (int) window->keys[key];
}
GLFWAPI int glfwGetMouseButton(GLFWwindow* handle, int button)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_RELEASE);
if (button < 0 || button > GLFW_MOUSE_BUTTON_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM,
"The specified mouse button is invalid");
return GLFW_RELEASE;
}
if (window->mouseButtons[button] == _GLFW_STICK)
{
// Sticky mode: release mouse button now
window->mouseButtons[button] = GLFW_RELEASE;
return GLFW_PRESS;
}
return (int) window->mouseButtons[button];
}
GLFWAPI void glfwGetCursorPos(GLFWwindow* handle, double* xpos, double* ypos)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
if (xpos)
*xpos = 0;
if (ypos)
*ypos = 0;
_GLFW_REQUIRE_INIT();
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (xpos)
*xpos = window->cursorPosX;
if (ypos)
*ypos = window->cursorPosY;
}
else
_glfwPlatformGetCursorPos(window, xpos, ypos);
}
GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT();
if (_glfw.focusedWindow != window)
return;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
// Only update the accumulated position if the cursor is disabled
window->cursorPosX = xpos;
window->cursorPosY = ypos;
}
else
{
// Update system cursor position
_glfwPlatformSetCursorPos(window, xpos, ypos);
}
}
GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot)
{
_GLFWcursor* cursor;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
cursor = calloc(1, sizeof(_GLFWcursor));
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfwPlatformCreateCursor(cursor, image, xhot, yhot))
{
glfwDestroyCursor((GLFWcursor*) cursor);
return NULL;
}
return (GLFWcursor*) cursor;
}
GLFWAPI GLFWcursor* glfwCreateStandardCursor(int shape)
{
_GLFWcursor* cursor;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
cursor = calloc(1, sizeof(_GLFWcursor));
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfwPlatformCreateStandardCursor(cursor, shape))
{
glfwDestroyCursor((GLFWcursor*) cursor);
return NULL;
}
return (GLFWcursor*) cursor;
}
GLFWAPI void glfwDestroyCursor(GLFWcursor* handle)
{
_GLFWcursor* cursor = (_GLFWcursor*) handle;
_GLFW_REQUIRE_INIT();
if (cursor == NULL)
return;
// Make sure the cursor is not being used by any window
{
_GLFWwindow* window;
for (window = _glfw.windowListHead; window; window = window->next)
{
if (window->cursor == cursor)
glfwSetCursor((GLFWwindow*) window, NULL);
}
}
_glfwPlatformDestroyCursor(cursor);
// Unlink cursor from global linked list
{
_GLFWcursor** prev = &_glfw.cursorListHead;
while (*prev != cursor)
prev = &((*prev)->next);
*prev = cursor->next;
}
free(cursor);
}
GLFWAPI void glfwSetCursor(GLFWwindow* windowHandle, GLFWcursor* cursorHandle)
{
_GLFWwindow* window = (_GLFWwindow*) windowHandle;
_GLFWcursor* cursor = (_GLFWcursor*) cursorHandle;
_GLFW_REQUIRE_INIT();
_glfwPlatformSetCursor(window, cursor);
window->cursor = cursor;
}
GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* handle, GLFWkeyfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.key, cbfun);
return cbfun;
}
GLFWAPI GLFWcharfun glfwSetCharCallback(GLFWwindow* handle, GLFWcharfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.character, cbfun);
return cbfun;
}
GLFWAPI GLFWcharmodsfun glfwSetCharModsCallback(GLFWwindow* handle, GLFWcharmodsfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.charmods, cbfun);
return cbfun;
}
GLFWAPI GLFWmousebuttonfun glfwSetMouseButtonCallback(GLFWwindow* handle,
GLFWmousebuttonfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.mouseButton, cbfun);
return cbfun;
}
GLFWAPI GLFWcursorposfun glfwSetCursorPosCallback(GLFWwindow* handle,
GLFWcursorposfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.cursorPos, cbfun);
return cbfun;
}
GLFWAPI GLFWcursorenterfun glfwSetCursorEnterCallback(GLFWwindow* handle,
GLFWcursorenterfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.cursorEnter, cbfun);
return cbfun;
}
GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* handle,
GLFWscrollfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.scroll, cbfun);
return cbfun;
}
GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* handle, GLFWdropfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(window->callbacks.drop, cbfun);
return cbfun;
}
GLFWAPI int glfwJoystickPresent(int joy)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return 0;
}
return _glfwPlatformJoystickPresent(joy);
}
GLFWAPI const float* glfwGetJoystickAxes(int joy, int* count)
{
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return NULL;
}
return _glfwPlatformGetJoystickAxes(joy, count);
}
GLFWAPI const unsigned char* glfwGetJoystickButtons(int joy, int* count)
{
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return NULL;
}
return _glfwPlatformGetJoystickButtons(joy, count);
}
GLFWAPI const char* glfwGetJoystickName(int joy)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return NULL;
}
return _glfwPlatformGetJoystickName(joy);
}
GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT();
_glfwPlatformSetClipboardString(window, string);
}
GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfwPlatformGetClipboardString(window);
}
GLFWAPI double glfwGetTime(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0.0);
return _glfwPlatformGetTime();
}
GLFWAPI void glfwSetTime(double time)
{
_GLFW_REQUIRE_INIT();
_glfwPlatformSetTime(time);
}