//========================================================================
// GLFW - An OpenGL library
// 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"
// 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)
{
int oldMode;
if (newMode != GLFW_CURSOR_NORMAL &&
newMode != GLFW_CURSOR_HIDDEN &&
newMode != GLFW_CURSOR_DISABLED)
{
_glfwInputError(GLFW_INVALID_ENUM, NULL);
return;
}
oldMode = window->cursorMode;
if (oldMode == newMode)
return;
if (window == _glfw.focusedWindow)
{
if (oldMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorPos(window, _glfw.cursorPosX, _glfw.cursorPosY);
else if (newMode == GLFW_CURSOR_DISABLED)
{
int width, height;
_glfw.cursorPosX = window->cursorPosX;
_glfw.cursorPosY = window->cursorPosY;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
}
_glfwPlatformSetCursorMode(window, newMode);
}
window->cursorMode = newMode;
}
// 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->key[i] == _GLFW_STICK)
window->key[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->mouseButton[i] == _GLFW_STICK)
window->mouseButton[i] = GLFW_RELEASE;
}
}
window->stickyMouseButtons = enabled;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW event API //////
//////////////////////////////////////////////////////////////////////////
void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int mods)
{
GLboolean repeated = GL_FALSE;
if (action == GLFW_RELEASE && window->key[key] == GLFW_RELEASE)
return;
if (key >= 0 && key <= GLFW_KEY_LAST)
{
if (action == GLFW_PRESS && window->key[key] == GLFW_PRESS)
repeated = GL_TRUE;
if (action == GLFW_RELEASE && window->stickyKeys)
window->key[key] = _GLFW_STICK;
else
window->key[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 character)
{
if (character == -1)
return;
if (character < 32 || (character > 126 && character < 160))
return;
if (window->callbacks.character)
window->callbacks.character((GLFWwindow*) window, character);
}
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->mouseButton[button] = _GLFW_STICK;
else
window->mouseButton[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;
}
else
{
if (window->cursorPosX == x && window->cursorPosY == y)
return;
window->cursorPosX = x;
window->cursorPosY = y;
}
if (window->callbacks.cursorPos)
{
window->callbacks.cursorPos((GLFWwindow*) window,
window->cursorPosX,
window->cursorPosY);
}
}
void _glfwInputCursorEnter(_GLFWwindow* window, int entered)
{
if (window->callbacks.cursorEnter)
window->callbacks.cursorEnter((GLFWwindow*) window, entered);
}
//////////////////////////////////////////////////////////////////////////
////// 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->key[key] == _GLFW_STICK)
{
// Sticky mode: release key now
window->key[key] = GLFW_RELEASE;
return GLFW_PRESS;
}
return (int) window->key[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->mouseButton[button] == _GLFW_STICK)
{
// Sticky mode: release mouse button now
window->mouseButton[button] = GLFW_RELEASE;
return GLFW_PRESS;
}
return (int) window->mouseButton[button];
}
GLFWAPI void glfwGetCursorPos(GLFWwindow* handle, double* xpos, double* ypos)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT();
if (xpos)
*xpos = window->cursorPosX;
if (ypos)
*ypos = window->cursorPosY;
}
GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT();
if (_glfw.focusedWindow != window)
return;
// Don't do anything if the cursor position did not change
if (xpos == window->cursorPosX && ypos == window->cursorPosY)
return;
// Set GLFW cursor position
window->cursorPosX = xpos;
window->cursorPosY = ypos;
// Do not move physical cursor if it is disabled
if (window->cursorMode == GLFW_CURSOR_DISABLED)
return;
// Update physical cursor position
_glfwPlatformSetCursorPos(window, xpos, ypos);
}
GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* handle, GLFWkeyfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWkeyfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.key;
window->callbacks.key = cbfun;
return previous;
}
GLFWAPI GLFWcharfun glfwSetCharCallback(GLFWwindow* handle, GLFWcharfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWcharfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.character;
window->callbacks.character = cbfun;
return previous;
}
GLFWAPI GLFWmousebuttonfun glfwSetMouseButtonCallback(GLFWwindow* handle,
GLFWmousebuttonfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWmousebuttonfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.mouseButton;
window->callbacks.mouseButton = cbfun;
return previous;
}
GLFWAPI GLFWcursorposfun glfwSetCursorPosCallback(GLFWwindow* handle,
GLFWcursorposfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWcursorposfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.cursorPos;
window->callbacks.cursorPos = cbfun;
return previous;
}
GLFWAPI GLFWcursorenterfun glfwSetCursorEnterCallback(GLFWwindow* handle,
GLFWcursorenterfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWcursorenterfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.cursorEnter;
window->callbacks.cursorEnter = cbfun;
return previous;
}
GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* handle,
GLFWscrollfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
GLFWscrollfun previous;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
previous = window->callbacks.scroll;
window->callbacks.scroll = cbfun;
return previous;
}