//========================================================================
// GLFW 3.2 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.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 <assert.h>
#include <float.h>
#include <stdlib.h>
// Internal key state used for sticky keys
#define _GLFW_STICK 3
//////////////////////////////////////////////////////////////////////////
////// GLFW event API //////
//////////////////////////////////////////////////////////////////////////
void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key >= 0 && key <= GLFW_KEY_LAST)
{
GLFWbool repeated = GLFW_FALSE;
if (action == GLFW_RELEASE && window->keys[key] == GLFW_RELEASE)
return;
if (action == GLFW_PRESS && window->keys[key] == GLFW_PRESS)
repeated = GLFW_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, GLFWbool 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 _glfwInputCursorPos(_GLFWwindow* window, double xpos, double ypos)
{
if (window->virtualCursorPosX == xpos && window->virtualCursorPosY == ypos)
return;
window->virtualCursorPosX = xpos;
window->virtualCursorPosY = ypos;
if (window->callbacks.cursorPos)
window->callbacks.cursorPos((GLFWwindow*) window, xpos, ypos);
}
void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered)
{
if (window->callbacks.cursorEnter)
window->callbacks.cursorEnter((GLFWwindow*) window, entered);
}
void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
{
if (window->callbacks.drop)
window->callbacks.drop((GLFWwindow*) window, count, paths);
}
void _glfwInputJoystickChange(int joy, int event)
{
if (_glfw.callbacks.joystick)
_glfw.callbacks.joystick(joy, event);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
GLFWbool _glfwIsPrintable(int key)
{
return (key >= GLFW_KEY_APOSTROPHE && key <= GLFW_KEY_WORLD_2) ||
(key >= GLFW_KEY_KP_0 && key <= GLFW_KEY_KP_ADD) ||
key == GLFW_KEY_KP_EQUAL;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW public API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI int glfwGetInputMode(GLFWwindow* handle, int mode)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_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, "Invalid input mode %i", mode);
return 0;
}
}
GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT();
switch (mode)
{
case GLFW_CURSOR:
{
if (value != GLFW_CURSOR_NORMAL &&
value != GLFW_CURSOR_HIDDEN &&
value != GLFW_CURSOR_DISABLED)
{
_glfwInputError(GLFW_INVALID_ENUM,
"Invalid cursor mode %i",
value);
return;
}
if (window->cursorMode == value)
return;
window->cursorMode = value;
_glfwPlatformGetCursorPos(window,
&window->virtualCursorPosX,
&window->virtualCursorPosY);
if (_glfwPlatformWindowFocused(window))
_glfwPlatformSetCursorMode(window, value);
return;
}
case GLFW_STICKY_KEYS:
{
if (window->stickyKeys == value)
return;
if (!value)
{
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 = value ? GLFW_TRUE : GLFW_FALSE;
return;
}
case GLFW_STICKY_MOUSE_BUTTONS:
{
if (window->stickyMouseButtons == value)
return;
if (!value)
{
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 = value ? GLFW_TRUE : GLFW_FALSE;
return;
}
}
_glfwInputError(GLFW_INVALID_ENUM, "Invalid input mode %i", mode);
}
GLFWAPI const char* glfwGetKeyName(int key, int scancode)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfwPlatformGetKeyName(key, scancode);
}
GLFWAPI int glfwGetKey(GLFWwindow* handle, int key)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_RELEASE);
if (key < GLFW_KEY_SPACE || key > GLFW_KEY_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid key %i", key);
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;
assert(window != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_RELEASE);
if (button < GLFW_MOUSE_BUTTON_1 || button > GLFW_MOUSE_BUTTON_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid mouse button %i", button);
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;
assert(window != NULL);
if (xpos)
*xpos = 0;
if (ypos)
*ypos = 0;
_GLFW_REQUIRE_INIT();
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
if (xpos)
*xpos = window->virtualCursorPosX;
if (ypos)
*ypos = window->virtualCursorPosY;
}
else
_glfwPlatformGetCursorPos(window, xpos, ypos);
}
GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT();
if (xpos != xpos || xpos < -DBL_MAX || xpos > DBL_MAX ||
ypos != ypos || ypos < -DBL_MAX || ypos > DBL_MAX)
{
_glfwInputError(GLFW_INVALID_VALUE,
"Invalid cursor position %f %f",
xpos, ypos);
return;
}
if (!_glfwPlatformWindowFocused(window))
return;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
// Only update the accumulated position if the cursor is disabled
window->virtualCursorPosX = xpos;
window->virtualCursorPosY = ypos;
}
else
{
// Update system cursor position
_glfwPlatformSetCursorPos(window, xpos, ypos);
}
}
GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot)
{
_GLFWcursor* cursor;
assert(image != NULL);
_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);
if (shape != GLFW_ARROW_CURSOR &&
shape != GLFW_IBEAM_CURSOR &&
shape != GLFW_CROSSHAIR_CURSOR &&
shape != GLFW_HAND_CURSOR &&
shape != GLFW_HRESIZE_CURSOR &&
shape != GLFW_VRESIZE_CURSOR)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid standard cursor %i", shape);
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;
assert(window != NULL);
_GLFW_REQUIRE_INIT();
window->cursor = cursor;
_glfwPlatformSetCursor(window, cursor);
}
GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* handle, GLFWkeyfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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;
assert(window != NULL);
_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, "Invalid joystick %i", joy);
return 0;
}
return _glfwPlatformJoystickPresent(joy);
}
GLFWAPI const float* glfwGetJoystickAxes(int joy, int* count)
{
assert(count != NULL);
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick %i", joy);
return NULL;
}
return _glfwPlatformGetJoystickAxes(joy, count);
}
GLFWAPI const unsigned char* glfwGetJoystickButtons(int joy, int* count)
{
assert(count != NULL);
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick %i", joy);
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, "Invalid joystick %i", joy);
return NULL;
}
return _glfwPlatformGetJoystickName(joy);
}
GLFWAPI GLFWjoystickfun glfwSetJoystickCallback(GLFWjoystickfun cbfun)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP_POINTERS(_glfw.callbacks.joystick, cbfun);
return cbfun;
}
GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
assert(string != NULL);
_GLFW_REQUIRE_INIT();
_glfwPlatformSetClipboardString(window, string);
}
GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfwPlatformGetClipboardString(window);
}
GLFWAPI double glfwGetTime(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0.0);
return (double) (_glfwPlatformGetTimerValue() - _glfw.timerOffset) /
_glfwPlatformGetTimerFrequency();
}
GLFWAPI void glfwSetTime(double time)
{
_GLFW_REQUIRE_INIT();
if (time != time || time < 0.0 || time > 18446744073.0)
{
_glfwInputError(GLFW_INVALID_VALUE, "Invalid time %f", time);
return;
}
_glfw.timerOffset = _glfwPlatformGetTimerValue() -
(uint64_t) (time * _glfwPlatformGetTimerFrequency());
}
GLFWAPI uint64_t glfwGetTimerValue(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0);
return _glfwPlatformGetTimerValue();
}
GLFWAPI uint64_t glfwGetTimerFrequency(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0);
return _glfwPlatformGetTimerFrequency();
}