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input.c
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input.c
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//========================================================================
// GLFW 3.5 - 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.
//
//========================================================================
#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
#define GLFW_MOD_MASK (GLFW_MOD_SHIFT | \
GLFW_MOD_CONTROL | \
GLFW_MOD_ALT | \
GLFW_MOD_SUPER | \
GLFW_MOD_CAPS_LOCK | \
GLFW_MOD_NUM_LOCK)
// Initializes the platform joystick API if it has not been already
//
static GLFWbool initJoysticks(void)
{
if (!_glfw.joysticksInitialized)
{
if (!_glfw.platform.initJoysticks())
{
_glfw.platform.terminateJoysticks();
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
{
const char* name = _glfw.platform.getMappingName();
length = strlen(name);
if (strncmp(c, 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';
}
_glfw.platform.updateGamepadGUID(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)
{
assert(window != NULL);
assert(key >= 0 || key == GLFW_KEY_UNKNOWN);
assert(key <= GLFW_KEY_LAST);
assert(action == GLFW_PRESS || action == GLFW_RELEASE);
assert(mods == (mods & GLFW_MOD_MASK));
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, uint32_t codepoint, int mods, GLFWbool plain)
{
assert(window != NULL);
assert(mods == (mods & GLFW_MOD_MASK));
assert(plain == GLFW_TRUE || plain == GLFW_FALSE);
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)
{
assert(window != NULL);
assert(xoffset > -FLT_MAX);
assert(xoffset < FLT_MAX);
assert(yoffset > -FLT_MAX);
assert(yoffset < FLT_MAX);
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)
{
assert(window != NULL);
assert(button >= 0);
assert(action == GLFW_PRESS || action == GLFW_RELEASE);
assert(mods == (mods & GLFW_MOD_MASK));
if (button < 0 || (!window->disableMouseButtonLimit && button > GLFW_MOUSE_BUTTON_LAST))
return;
if (!window->lockKeyMods)
mods &= ~(GLFW_MOD_CAPS_LOCK | GLFW_MOD_NUM_LOCK);
if (button <= GLFW_MOUSE_BUTTON_LAST)
{
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)
{
assert(window != NULL);
assert(xpos > -FLT_MAX);
assert(xpos < FLT_MAX);
assert(ypos > -FLT_MAX);
assert(ypos < FLT_MAX);
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)
{
assert(window != NULL);
assert(entered == GLFW_TRUE || entered == GLFW_FALSE);
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)
{
assert(window != NULL);
assert(count > 0);
assert(paths != NULL);
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)
{
assert(js != NULL);
assert(event == GLFW_CONNECTED || event == GLFW_DISCONNECTED);
if (event == GLFW_CONNECTED)
js->connected = GLFW_TRUE;
else if (event == GLFW_DISCONNECTED)
js->connected = GLFW_FALSE;
if (_glfw.callbacks.joystick)
_glfw.callbacks.joystick((int) (js - _glfw.joysticks), event);
}
// Notifies shared code of the new value of a joystick axis
//
void _glfwInputJoystickAxis(_GLFWjoystick* js, int axis, float value)
{
assert(js != NULL);
assert(axis >= 0);
assert(axis < js->axisCount);
js->axes[axis] = value;
}
// Notifies shared code of the new value of a joystick button
//
void _glfwInputJoystickButton(_GLFWjoystick* js, int button, char value)
{
assert(js != NULL);
assert(button >= 0);
assert(button < js->buttonCount);
assert(value == GLFW_PRESS || value == GLFW_RELEASE);
js->buttons[button] = value;
}
// Notifies shared code of the new value of a joystick hat
//
void _glfwInputJoystickHat(_GLFWjoystick* js, int hat, char value)
{
int base;
assert(js != NULL);
assert(hat >= 0);
assert(hat < js->hatCount);
// Valid hat values only use the least significant nibble
assert((value & 0xf0) == 0);
// Valid hat values do not have both bits of an axis set
assert((value & GLFW_HAT_LEFT) == 0 || (value & GLFW_HAT_RIGHT) == 0);
assert((value & GLFW_HAT_UP) == 0 || (value & GLFW_HAT_DOWN) == 0);
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 = _glfw_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].allocated)
break;
}
if (jid > GLFW_JOYSTICK_LAST)
return NULL;
js = _glfw.joysticks + jid;
js->allocated = GLFW_TRUE;
js->axes = _glfw_calloc(axisCount, sizeof(float));
js->buttons = _glfw_calloc(buttonCount + (size_t) hatCount * 4, 1);
js->hats = _glfw_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)
{
_glfw_free(js->axes);
_glfw_free(js->buttons);
_glfw_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;
_glfw.platform.getWindowSize(window, &width, &height);
_glfw.platform.setCursorPos(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;
case GLFW_UNLIMITED_MOUSE_BUTTONS:
return window->disableMouseButtonLimit;
}
_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();
switch (mode)
{
case GLFW_CURSOR:
{
if (value != GLFW_CURSOR_NORMAL &&
value != GLFW_CURSOR_HIDDEN &&
value != GLFW_CURSOR_DISABLED &&
value != GLFW_CURSOR_CAPTURED)
{
_glfwInputError(GLFW_INVALID_ENUM,
"Invalid cursor mode 0x%08X",
value);
return;
}
if (window->cursorMode == value)
return;
window->cursorMode = value;
_glfw.platform.getCursorPos(window,
&window->virtualCursorPosX,
&window->virtualCursorPosY);
_glfw.platform.setCursorMode(window, value);
return;
}
case 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;
return;
}
case 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;
return;
}
case GLFW_LOCK_KEY_MODS:
{
window->lockKeyMods = value ? GLFW_TRUE : GLFW_FALSE;
return;
}
case GLFW_RAW_MOUSE_MOTION:
{
if (!_glfw.platform.rawMouseMotionSupported())
{
_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;
_glfw.platform.setRawMouseMotion(window, value);
return;
}
case GLFW_UNLIMITED_MOUSE_BUTTONS:
{
window->disableMouseButtonLimit = value ? GLFW_TRUE : GLFW_FALSE;
return;
}
}
_glfwInputError(GLFW_INVALID_ENUM, "Invalid input mode 0x%08X", mode);
}
GLFWAPI int glfwRawMouseMotionSupported(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
return _glfw.platform.rawMouseMotionSupported();
}
GLFWAPI const char* glfwGetKeyName(int key, int scancode)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (key != GLFW_KEY_UNKNOWN)
{
if (key < GLFW_KEY_SPACE || key > GLFW_KEY_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid key %i", key);
return NULL;
}
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 = _glfw.platform.getKeyScancode(key);
}
return _glfw.platform.getScancodeName(scancode);
}
GLFWAPI int glfwGetKeyScancode(int key)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0);
if (key < GLFW_KEY_SPACE || key > GLFW_KEY_LAST)
{
_glfwInputError(GLFW_INVALID_ENUM, "Invalid key %i", key);
return -1;
}
return _glfw.platform.getKeyScancode(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
_glfw.platform.getCursorPos(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 (!_glfw.platform.windowFocused(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
_glfw.platform.setCursorPos(window, xpos, ypos);
}
}
GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot)
{
_GLFWcursor* cursor;
assert(image != NULL);
assert(image->pixels != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (image->width <= 0 || image->height <= 0)
{
_glfwInputError(GLFW_INVALID_VALUE, "Invalid image dimensions for cursor");
return NULL;
}
cursor = _glfw_calloc(1, sizeof(_GLFWcursor));
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfw.platform.createCursor(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 = _glfw_calloc(1, sizeof(_GLFWcursor));
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfw.platform.createStandardCursor(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);
}
}
_glfw.platform.destroyCursor(cursor);
// Unlink cursor from global linked list
{
_GLFWcursor** prev = &_glfw.cursorListHead;
while (*prev != cursor)
prev = &((*prev)->next);
*prev = cursor->next;
}
_glfw_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;
_glfw.platform.setCursor(window, cursor);
}
GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* handle, GLFWkeyfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
assert(window != NULL);
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
_GLFW_SWAP(GLFWkeyfun, 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(GLFWcharfun, 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(GLFWcharmodsfun, 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(GLFWmousebuttonfun, window->callbacks.mouseButton, cbfun);
return cbfun;
}
GLFWAPI GLFWcursorposfun glfwSetCursorPosCallback(GLFWwindow* handle,
GLFWcursorposfun cbfun)
{
_GLFWwindow* window = (_GLFWwindow*) handle;