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201400b974
glfw/src/input.c
Camilla Löwy 201400b974 Simplify parsing of default gamepad mappings 
The outer glfwUpdateGamepadMappings function is now bypassed when
parsing the default gamepad mappings.  The data in mappings.h does not
contain any comments or line breaks.  Also this is done before joystick
support has been initialized, so there is no need to look for matching
devices.

Finally, the array of default mappings is pre-allocated.  This has no
measurable performance impact but does generate a lot of calls, which
won't be nice for a user provided custom allocator to deal with.
2021-08-01 20:57:28 +02:00

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//========================================================================
// GLFW 3.4 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <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.
//
//========================================================================
// Please use C89 style variable declarations in this file because VS 2010
//========================================================================
#include "internal.h"
#include "mappings.h"
#include <assert.h>
#include <float.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
// Internal key state used for sticky keys
#define _GLFW_STICK 3
// Internal constants for gamepad mapping source types
#define _GLFW_JOYSTICK_AXIS 1
#define _GLFW_JOYSTICK_BUTTON 2
#define _GLFW_JOYSTICK_HATBIT 3
// Initializes the platform joystick API if it has not been already
//
static GLFWbool initJoysticks(void)
{
if (!_glfw.joysticksInitialized)
{
if (!_glfwPlatformInitJoysticks())
{
_glfwPlatformTerminateJoysticks();
return GLFW_FALSE;
}
}
return _glfw.joysticksInitialized = GLFW_TRUE;
}
// Finds a mapping based on joystick GUID
//
static _GLFWmapping* findMapping(const char* guid)
{
int i;
for (i = 0; i < _glfw.mappingCount; i++)
{
if (strcmp(_glfw.mappings[i].guid, guid) == 0)
return _glfw.mappings + i;
}
return NULL;
}
// Checks whether a gamepad mapping element is present in the hardware
//
static GLFWbool isValidElementForJoystick(const _GLFWmapelement* e,
const _GLFWjoystick* js)
{
if (e->type == _GLFW_JOYSTICK_HATBIT && (e->index >> 4) >= js->hatCount)
return GLFW_FALSE;
else if (e->type == _GLFW_JOYSTICK_BUTTON && e->index >= js->buttonCount)
return GLFW_FALSE;
else if (e->type == _GLFW_JOYSTICK_AXIS && e->index >= js->axisCount)
return GLFW_FALSE;
return GLFW_TRUE;
}
// Finds a mapping based on joystick GUID and verifies element indices
//
static _GLFWmapping* findValidMapping(const _GLFWjoystick* js)
{
_GLFWmapping* mapping = findMapping(js->guid);
if (mapping)
{
int i;
for (i = 0; i <= GLFW_GAMEPAD_BUTTON_LAST; i++)
{
if (!isValidElementForJoystick(mapping->buttons + i, js))
return NULL;
}
for (i = 0; i <= GLFW_GAMEPAD_AXIS_LAST; i++)
{
if (!isValidElementForJoystick(mapping->axes + i, js))
return NULL;
}
}
return mapping;
}
// Parses an SDL_GameControllerDB line and adds it to the mapping list
//
static GLFWbool parseMapping(_GLFWmapping* mapping, const char* string)
{
const char* c = string;
size_t i, length;
struct
{
const char* name;
_GLFWmapelement* element;
} fields[] =
{
{ "platform", NULL },
{ "a", mapping->buttons + GLFW_GAMEPAD_BUTTON_A },
{ "b", mapping->buttons + GLFW_GAMEPAD_BUTTON_B },
{ "x", mapping->buttons + GLFW_GAMEPAD_BUTTON_X },
{ "y", mapping->buttons + GLFW_GAMEPAD_BUTTON_Y },
{ "back", mapping->buttons + GLFW_GAMEPAD_BUTTON_BACK },
{ "start", mapping->buttons + GLFW_GAMEPAD_BUTTON_START },
{ "guide", mapping->buttons + GLFW_GAMEPAD_BUTTON_GUIDE },
{ "leftshoulder", mapping->buttons + GLFW_GAMEPAD_BUTTON_LEFT_BUMPER },
{ "rightshoulder", mapping->buttons + GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER },
{ "leftstick", mapping->buttons + GLFW_GAMEPAD_BUTTON_LEFT_THUMB },
{ "rightstick", mapping->buttons + GLFW_GAMEPAD_BUTTON_RIGHT_THUMB },
{ "dpup", mapping->buttons + GLFW_GAMEPAD_BUTTON_DPAD_UP },
{ "dpright", mapping->buttons + GLFW_GAMEPAD_BUTTON_DPAD_RIGHT },
{ "dpdown", mapping->buttons + GLFW_GAMEPAD_BUTTON_DPAD_DOWN },
{ "dpleft", mapping->buttons + GLFW_GAMEPAD_BUTTON_DPAD_LEFT },
{ "lefttrigger", mapping->axes + GLFW_GAMEPAD_AXIS_LEFT_TRIGGER },
{ "righttrigger", mapping->axes + GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER },
{ "leftx", mapping->axes + GLFW_GAMEPAD_AXIS_LEFT_X },
{ "lefty", mapping->axes + GLFW_GAMEPAD_AXIS_LEFT_Y },
{ "rightx", mapping->axes + GLFW_GAMEPAD_AXIS_RIGHT_X },
{ "righty", mapping->axes + GLFW_GAMEPAD_AXIS_RIGHT_Y }
};
length = strcspn(c, ",");
if (length != 32 || c[length] != ',')
{
_glfwInputError(GLFW_INVALID_VALUE, NULL);
return GLFW_FALSE;
}
memcpy(mapping->guid, c, length);
c += length + 1;
length = strcspn(c, ",");
if (length >= sizeof(mapping->name) || c[length] != ',')
{
_glfwInputError(GLFW_INVALID_VALUE, NULL);
return GLFW_FALSE;
}
memcpy(mapping->name, c, length);
c += length + 1;
while (*c)
{
// TODO: Implement output modifiers
if (*c == '+' || *c == '-')
return GLFW_FALSE;
for (i = 0; i < sizeof(fields) / sizeof(fields[0]); i++)
{
length = strlen(fields[i].name);
if (strncmp(c, fields[i].name, length) != 0 || c[length] != ':')
continue;
c += length + 1;
if (fields[i].element)
{
_GLFWmapelement* e = fields[i].element;
int8_t minimum = -1;
int8_t maximum = 1;
if (*c == '+')
{
minimum = 0;
c += 1;
}
else if (*c == '-')
{
maximum = 0;
c += 1;
}
if (*c == 'a')
e->type = _GLFW_JOYSTICK_AXIS;
else if (*c == 'b')
e->type = _GLFW_JOYSTICK_BUTTON;
else if (*c == 'h')
e->type = _GLFW_JOYSTICK_HATBIT;
else
break;
if (e->type == _GLFW_JOYSTICK_HATBIT)
{
const unsigned long hat = strtoul(c + 1, (char**) &c, 10);
const unsigned long bit = strtoul(c + 1, (char**) &c, 10);
e->index = (uint8_t) ((hat << 4) | bit);
}
else
e->index = (uint8_t) strtoul(c + 1, (char**) &c, 10);
if (e->type == _GLFW_JOYSTICK_AXIS)
{
e->axisScale = 2 / (maximum - minimum);
e->axisOffset = -(maximum + minimum);
if (*c == '~')
{
e->axisScale = -e->axisScale;
e->axisOffset = -e->axisOffset;
}
}
}
else
{
length = strlen(_GLFW_PLATFORM_MAPPING_NAME);
if (strncmp(c, _GLFW_PLATFORM_MAPPING_NAME, length) != 0)
return GLFW_FALSE;
}
break;
}
c += strcspn(c, ",");
c += strspn(c, ",");
}
for (i = 0; i < 32; i++)
{
if (mapping->guid[i] >= 'A' && mapping->guid[i] <= 'F')
mapping->guid[i] += 'a' - 'A';
}
_glfwPlatformUpdateGamepadGUID(mapping->guid);
return GLFW_TRUE;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW event API //////
//////////////////////////////////////////////////////////////////////////
// Notifies shared code of a physical key event
//
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->lockKeyMods)
mods &= ~(GLFW_MOD_CAPS_LOCK | GLFW_MOD_NUM_LOCK);
if (window->callbacks.key)
window->callbacks.key((GLFWwindow*) window, key, scancode, action, mods);
}
// Notifies shared code of a Unicode codepoint input event
// The 'plain' parameter determines whether to emit a regular character event
//
void _glfwInputChar(_GLFWwindow* window, unsigned int codepoint, int mods, GLFWbool plain)
{
if (codepoint < 32 || (codepoint > 126 && codepoint < 160))
return;
if (!window->lockKeyMods)
mods &= ~(GLFW_MOD_CAPS_LOCK | GLFW_MOD_NUM_LOCK);
if (window->callbacks.charmods)
window->callbacks.charmods((GLFWwindow*) window, codepoint, mods);
if (plain)
{
if (window->callbacks.character)
window->callbacks.character((GLFWwindow*) window, codepoint);
}
}
// Notifies shared code of a scroll event
//
void _glfwInputScroll(_GLFWwindow* window, double xoffset, double yoffset)
{
if (window->callbacks.scroll)
window->callbacks.scroll((GLFWwindow*) window, xoffset, yoffset);
}
// Notifies shared code of a mouse button click event
//
void _glfwInputMouseClick(_GLFWwindow* window, int button, int action, int mods)
{
if (button < 0 || button > GLFW_MOUSE_BUTTON_LAST)
return;
if (!window->lockKeyMods)
mods &= ~(GLFW_MOD_CAPS_LOCK | GLFW_MOD_NUM_LOCK);
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);
}
// Notifies shared code of a cursor motion event
// The position is specified in content area relative screen coordinates
//
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);
}
// Notifies shared code of a cursor enter/leave event
//
void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered)
{
if (window->callbacks.cursorEnter)
window->callbacks.cursorEnter((GLFWwindow*) window, entered);
}
// Notifies shared code of files or directories dropped on a window
//
void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
{
if (window->callbacks.drop)
window->callbacks.drop((GLFWwindow*) window, count, paths);
}
// Notifies shared code of a joystick connection or disconnection
//
void _glfwInputJoystick(_GLFWjoystick* js, int event)
{
const int jid = (int) (js - _glfw.joysticks);
if (_glfw.callbacks.joystick)
_glfw.callbacks.joystick(jid, event);
}
// Notifies shared code of the new value of a joystick axis
//
void _glfwInputJoystickAxis(_GLFWjoystick* js, int axis, float value)
{
js->axes[axis] = value;
}
// Notifies shared code of the new value of a joystick button
//
void _glfwInputJoystickButton(_GLFWjoystick* js, int button, char value)
{
js->buttons[button] = value;
}
// Notifies shared code of the new value of a joystick hat
//
void _glfwInputJoystickHat(_GLFWjoystick* js, int hat, char value)
{
const int base = js->buttonCount + hat * 4;
js->buttons[base + 0] = (value & 0x01) ? GLFW_PRESS : GLFW_RELEASE;
js->buttons[base + 1] = (value & 0x02) ? GLFW_PRESS : GLFW_RELEASE;
js->buttons[base + 2] = (value & 0x04) ? GLFW_PRESS : GLFW_RELEASE;
js->buttons[base + 3] = (value & 0x08) ? GLFW_PRESS : GLFW_RELEASE;
js->hats[hat] = value;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Adds the built-in set of gamepad mappings
//
void _glfwInitGamepadMappings(void)
{
size_t i;
const size_t count = sizeof(_glfwDefaultMappings) / sizeof(char*);
_glfw.mappings = calloc(count, sizeof(_GLFWmapping));
for (i = 0; i < count; i++)
{
if (parseMapping(&_glfw.mappings[_glfw.mappingCount], _glfwDefaultMappings[i]))
_glfw.mappingCount++;
}
}
// Returns an available joystick object with arrays and name allocated
//
_GLFWjoystick* _glfwAllocJoystick(const char* name,
const char* guid,
int axisCount,
int buttonCount,
int hatCount)
{
int jid;
_GLFWjoystick* js;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (!_glfw.joysticks[jid].present)
break;
}
if (jid > GLFW_JOYSTICK_LAST)
return NULL;
js = _glfw.joysticks + jid;
js->present = GLFW_TRUE;
js->axes = calloc(axisCount, sizeof(float));
js->buttons = calloc(buttonCount + (size_t) hatCount * 4, 1);
js->hats = calloc(hatCount, 1);
js->axisCount = axisCount;
js->buttonCount = buttonCount;
js->hatCount = hatCount;
strncpy(js->name, name, sizeof(js->name) - 1);
strncpy(js->guid, guid, sizeof(js->guid) - 1);
js->mapping = findValidMapping(js);
return js;
}
// Frees arrays and name and flags the joystick object as unused
//
void _glfwFreeJoystick(_GLFWjoystick* js)
{
free(js->axes);
free(js->buttons);
free(js->hats);
memset(js, 0, sizeof(_GLFWjoystick));
}
// Center the cursor in the content area of the specified window
//
void _glfwCenterCursorInContentArea(_GLFWwindow* window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
}
//////////////////////////////////////////////////////////////////////////
////// 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;
case GLFW_LOCK_KEY_MODS:
return window->lockKeyMods;
case GLFW_RAW_MOUSE_MOTION:
return window->rawMouseMotion;
}
_glfwInputError(GLFW_INVALID_ENUM, "Invalid input mode 0x%08X", mode);
return 0;
}
GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT();
if (mode == GLFW_CURSOR)
{
if (value != GLFW_CURSOR_NORMAL &&
value != GLFW_CURSOR_HIDDEN &&
value != GLFW_CURSOR_DISABLED)
{
_glfwInputError(GLFW_INVALID_ENUM,
"Invalid cursor mode 0x%08X",
value);
return;
}
if (window->cursorMode == value)
return;
window->cursorMode = value;
_glfwPlatformGetCursorPos(window,
&window->virtualCursorPosX,
&window->virtualCursorPosY);
_glfwPlatformSetCursorMode(window, value);
}
else if (mode == GLFW_STICKY_KEYS)
{
value = value ? GLFW_TRUE : GLFW_FALSE;
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;
}
else if (mode == GLFW_STICKY_MOUSE_BUTTONS)
{
value = value ? GLFW_TRUE : GLFW_FALSE;
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;
}
else if (mode == GLFW_LOCK_KEY_MODS)
{
window->lockKeyMods = value ? GLFW_TRUE : GLFW_FALSE;
}
else if (mode == GLFW_RAW_MOUSE_MOTION)
{
if (!_glfwPlatformRawMouseMotionSupported())
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Raw mouse motion is not supported on this system");
return;
}
value = value ? GLFW_TRUE : GLFW_FALSE;
if (window->rawMouseMotion == value)
return;
window->rawMouseMotion = value;
_glfwPlatformSetRawMouseMotion(window, value);
}
else
_glfwInputError(GLFW_INVALID_ENUM, "Invalid input mode 0x%08X", mode);
}
GLFWAPI int glfwRawMouseMotionSupported(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
return _glfwPlatformRawMouseMotionSupported();
}
GLFWAPI const char* glfwGetKeyName(int key, int scancode)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (key != GLFW_KEY_UNKNOWN)
{
if (key != GLFW_KEY_KP_EQUAL &&
(key < GLFW_KEY_KP_0 || key > GLFW_KEY_KP_ADD) &&
(key < GLFW_KEY_APOSTROPHE || key > GLFW_KEY_WORLD_2))
{
return NULL;
}
scancode = _glfwPlatformGetKeyScancode(key);
}
return _glfwPlatformGetScancodeName(scancode);
}
GLFWAPI int glfwGetKeyScancode(int key)
{
_GLFW_REQUIRE_INIT_OR_RETURN(-1);
if (key < GLFW_KEY_SPACE || key > GLFW_KEY_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid key %i", key);
return GLFW_RELEASE;
}
return _glfwPlatformGetKeyScancode(key);
}
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_POINTING_HAND_CURSOR &&
shape != GLFW_RESIZE_EW_CURSOR &&
shape != GLFW_RESIZE_NS_CURSOR &&
shape != GLFW_RESIZE_NWSE_CURSOR &&
shape != GLFW_RESIZE_NESW_CURSOR &&
shape != GLFW_RESIZE_ALL_CURSOR &&
shape != GLFW_NOT_ALLOWED_CURSOR)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid standard cursor 0x%08X", 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 jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return GLFW_FALSE;
}
if (!initJoysticks())
return GLFW_FALSE;
js = _glfw.joysticks + jid;
if (!js->present)
return GLFW_FALSE;
return _glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE);
}
GLFWAPI const float* glfwGetJoystickAxes(int jid, int* count)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
assert(count != NULL);
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_AXES))
return NULL;
*count = js->axisCount;
return js->axes;
}
GLFWAPI const unsigned char* glfwGetJoystickButtons(int jid, int* count)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
assert(count != NULL);
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_BUTTONS))
return NULL;
if (_glfw.hints.init.hatButtons)
*count = js->buttonCount + js->hatCount * 4;
else
*count = js->buttonCount;
return js->buttons;
}
GLFWAPI const unsigned char* glfwGetJoystickHats(int jid, int* count)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
assert(count != NULL);
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_BUTTONS))
return NULL;
*count = js->hatCount;
return js->hats;
}
GLFWAPI const char* glfwGetJoystickName(int jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
return js->name;
}
GLFWAPI const char* glfwGetJoystickGUID(int jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
return js->guid;
}
GLFWAPI void glfwSetJoystickUserPointer(int jid, void* pointer)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT();
js = _glfw.joysticks + jid;
if (!js->present)
return;
js->userPointer = pointer;
}
GLFWAPI void* glfwGetJoystickUserPointer(int jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
return js->userPointer;
}
GLFWAPI GLFWjoystickfun glfwSetJoystickCallback(GLFWjoystickfun cbfun)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (!initJoysticks())
return NULL;
_GLFW_SWAP_POINTERS(_glfw.callbacks.joystick, cbfun);
return cbfun;
}
GLFWAPI int glfwUpdateGamepadMappings(const char* string)
{
int jid;
const char* c = string;
assert(string != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
while (*c)
{
if ((*c >= '0' && *c <= '9') ||
(*c >= 'a' && *c <= 'f') ||
(*c >= 'A' && *c <= 'F'))
{
char line[1024];
const size_t length = strcspn(c, "\r\n");
if (length < sizeof(line))
{
_GLFWmapping mapping = {{0}};
memcpy(line, c, length);
line[length] = '\0';
if (parseMapping(&mapping, line))
{
_GLFWmapping* previous = findMapping(mapping.guid);
if (previous)
*previous = mapping;
else
{
_glfw.mappingCount++;
_glfw.mappings =
realloc(_glfw.mappings,
sizeof(_GLFWmapping) * _glfw.mappingCount);
_glfw.mappings[_glfw.mappingCount - 1] = mapping;
}
}
}
c += length;
}
else
{
c += strcspn(c, "\r\n");
c += strspn(c, "\r\n");
}
}
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
_GLFWjoystick* js = _glfw.joysticks + jid;
if (js->present)
js->mapping = findValidMapping(js);
}
return GLFW_TRUE;
}
GLFWAPI int glfwJoystickIsGamepad(int jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return GLFW_FALSE;
}
if (!initJoysticks())
return GLFW_FALSE;
js = _glfw.joysticks + jid;
if (!js->present)
return GLFW_FALSE;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
return GLFW_FALSE;
return js->mapping != NULL;
}
GLFWAPI const char* glfwGetGamepadName(int jid)
{
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return NULL;
}
if (!initJoysticks())
return NULL;
js = _glfw.joysticks + jid;
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
if (!js->mapping)
return NULL;
return js->mapping->name;
}
GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state)
{
int i;
_GLFWjoystick* js;
assert(jid >= GLFW_JOYSTICK_1);
assert(jid <= GLFW_JOYSTICK_LAST);
assert(state != NULL);
memset(state, 0, sizeof(GLFWgamepadstate));
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
if (jid < 0 || jid > GLFW_JOYSTICK_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid joystick ID %i", jid);
return GLFW_FALSE;
}
if (!initJoysticks())
return GLFW_FALSE;
js = _glfw.joysticks + jid;
if (!js->present)
return GLFW_FALSE;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_ALL))
return GLFW_FALSE;
if (!js->mapping)
return GLFW_FALSE;
for (i = 0; i <= GLFW_GAMEPAD_BUTTON_LAST; i++)
{
const _GLFWmapelement* e = js->mapping->buttons + i;
if (e->type == _GLFW_JOYSTICK_AXIS)
{
const float value = js->axes[e->index] * e->axisScale + e->axisOffset;
// HACK: This should be baked into the value transform
// TODO: Bake into transform when implementing output modifiers
if (e->axisOffset < 0 || (e->axisOffset == 0 && e->axisScale > 0))
{
if (value >= 0.f)
state->buttons[i] = GLFW_PRESS;
}
else
{
if (value <= 0.f)
state->buttons[i] = GLFW_PRESS;
}
}
else if (e->type == _GLFW_JOYSTICK_HATBIT)
{
const unsigned int hat = e->index >> 4;
const unsigned int bit = e->index & 0xf;
if (js->hats[hat] & bit)
state->buttons[i] = GLFW_PRESS;
}
else if (e->type == _GLFW_JOYSTICK_BUTTON)
state->buttons[i] = js->buttons[e->index];
}
for (i = 0; i <= GLFW_GAMEPAD_AXIS_LAST; i++)
{
const _GLFWmapelement* e = js->mapping->axes + i;
if (e->type == _GLFW_JOYSTICK_AXIS)
{
const float value = js->axes[e->index] * e->axisScale + e->axisOffset;
state->axes[i] = _glfw_fminf(_glfw_fmaxf(value, -1.f), 1.f);
}
else if (e->type == _GLFW_JOYSTICK_HATBIT)
{
const unsigned int hat = e->index >> 4;
const unsigned int bit = e->index & 0xf;
if (js->hats[hat] & bit)
state->axes[i] = 1.f;
else
state->axes[i] = -1.f;
}
else if (e->type == _GLFW_JOYSTICK_BUTTON)
state->axes[i] = js->buttons[e->index] * 2.f - 1.f;
}
return GLFW_TRUE;
}
GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
{
assert(string != NULL);
_GLFW_REQUIRE_INIT();
_glfwPlatformSetClipboardString(string);
}
GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfwPlatformGetClipboardString();
}
GLFWAPI double glfwGetTime(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0.0);
return (double) (_glfwPlatformGetTimerValue() - _glfw.timer.offset) /
_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.timer.offset = _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();
}
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