diff options
Diffstat (limited to 'src/glut/glx/glut_input.c')
| -rw-r--r-- | src/glut/glx/glut_input.c | 630 |
1 files changed, 630 insertions, 0 deletions
diff --git a/src/glut/glx/glut_input.c b/src/glut/glx/glut_input.c new file mode 100644 index 00000000000..a8d3c61cfe4 --- /dev/null +++ b/src/glut/glx/glut_input.c @@ -0,0 +1,630 @@ + +/* Copyright (c) Mark J. Kilgard, 1994, 1997, 1998. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#if !defined(_WIN32) +#include <X11/Xlib.h> +#if defined(__vms) +#include <X11/XInput.h> +#else +#include <X11/extensions/XInput.h> +#endif +#include <X11/Xutil.h> +#else +#include <windows.h> +#include <mmsystem.h> /* Win32 Multimedia API header. */ +#endif /* !_WIN32 */ + +#include "glutint.h" + +int __glutNumDials = 0; +int __glutNumSpaceballButtons = 0; +int __glutNumButtonBoxButtons = 0; +int __glutNumTabletButtons = 0; +int __glutNumMouseButtons = 3; /* Good guess. */ +XDevice *__glutTablet = NULL; +XDevice *__glutDials = NULL; +XDevice *__glutSpaceball = NULL; + +int __glutHasJoystick = 0; +int __glutNumJoystickButtons = 0; +int __glutNumJoystickAxes = 0; + +#if !defined(_WIN32) +typedef struct _Range { + int min; + int range; +} Range; + +#define NUM_SPACEBALL_AXIS 6 +#define NUM_TABLET_AXIS 2 +#define NUM_DIALS_AXIS 8 + +Range __glutSpaceballRange[NUM_SPACEBALL_AXIS]; +Range __glutTabletRange[NUM_TABLET_AXIS]; +int *__glutDialsResolution; + +/* Safely assumes 0 is an illegal event type for X Input + extension events. */ +int __glutDeviceMotionNotify = 0; +int __glutDeviceButtonPress = 0; +int __glutDeviceButtonPressGrab = 0; +int __glutDeviceButtonRelease = 0; +int __glutDeviceStateNotify = 0; + +static int +normalizeTabletPos(int axis, int rawValue) +{ + assert(rawValue >= __glutTabletRange[axis].min); + assert(rawValue <= __glutTabletRange[axis].min + + __glutTabletRange[axis].range); + /* Normalize rawValue to between 0 and 4000. */ + return ((rawValue - __glutTabletRange[axis].min) * 4000) / + __glutTabletRange[axis].range; +} + +static int +normalizeDialAngle(int axis, int rawValue) +{ + /* XXX Assumption made that the resolution of the device is + number of clicks for one complete dial revolution. This + is true for SGI's dial & button box. */ + return (rawValue * 360.0) / __glutDialsResolution[axis]; +} + +static int +normalizeSpaceballAngle(int axis, int rawValue) +{ + assert(rawValue >= __glutSpaceballRange[axis].min); + assert(rawValue <= __glutSpaceballRange[axis].min + + __glutSpaceballRange[axis].range); + /* Normalize rawValue to between -1800 and 1800. */ + return ((rawValue - __glutSpaceballRange[axis].min) * 3600) / + __glutSpaceballRange[axis].range - 1800; +} + +static int +normalizeSpaceballDelta(int axis, int rawValue) +{ + assert(rawValue >= __glutSpaceballRange[axis].min); + assert(rawValue <= __glutSpaceballRange[axis].min + + __glutSpaceballRange[axis].range); + /* Normalize rawValue to between -1000 and 1000. */ + return ((rawValue - __glutSpaceballRange[axis].min) * 2000) / + __glutSpaceballRange[axis].range - 1000; +} + +static void +queryTabletPos(GLUTwindow * window) +{ + XDeviceState *state; + XInputClass *any; + XValuatorState *v; + int i; + + state = XQueryDeviceState(__glutDisplay, __glutTablet); + any = state->data; + for (i = 0; i < state->num_classes; i++) { +#if defined(__cplusplus) || defined(c_plusplus) + switch (any->c_class) { +#else + switch (any->class) { +#endif + case ValuatorClass: + v = (XValuatorState *) any; + if (v->num_valuators < 2) + goto end; + if (window->tabletPos[0] == -1) + window->tabletPos[0] = normalizeTabletPos(0, v->valuators[0]); + if (window->tabletPos[1] == -1) + window->tabletPos[1] = normalizeTabletPos(1, v->valuators[1]); + } + any = (XInputClass *) ((char *) any + any->length); + } +end: + XFreeDeviceState(state); +} + +static void +tabletPosChange(GLUTwindow * window, int first, int count, int *data) +{ + int i, value, genEvent = 0; + + for (i = first; i < first + count; i++) { + switch (i) { + case 0: /* X axis */ + case 1: /* Y axis */ + value = normalizeTabletPos(i, data[i - first]); + if (value != window->tabletPos[i]) { + window->tabletPos[i] = value; + genEvent = 1; + } + break; + } + } + if (window->tabletPos[0] == -1 || window->tabletPos[1] == -1) + queryTabletPos(window); + if (genEvent) + window->tabletMotion(window->tabletPos[0], window->tabletPos[1]); +} +#endif /* !_WIN32 */ + +int +__glutProcessDeviceEvents(XEvent * event) +{ +#if !defined(_WIN32) + GLUTwindow *window; + + /* XXX Ugly code fan out. */ + + /* Can't use switch/case since X Input event types are + dynamic. */ + + if (__glutDeviceMotionNotify && event->type == __glutDeviceMotionNotify) { + XDeviceMotionEvent *devmot = (XDeviceMotionEvent *) event; + + window = __glutGetWindow(devmot->window); + if (window) { + if (__glutTablet + && devmot->deviceid == __glutTablet->device_id + && window->tabletMotion) { + tabletPosChange(window, devmot->first_axis, devmot->axes_count, + devmot->axis_data); + } else if (__glutDials + && devmot->deviceid == __glutDials->device_id + && window->dials) { + int i, first = devmot->first_axis, count = devmot->axes_count; + + for (i = first; i < first + count; i++) + window->dials(i + 1, + normalizeDialAngle(i, devmot->axis_data[i - first])); + } else if (__glutSpaceball + && devmot->deviceid == __glutSpaceball->device_id) { + /* XXX Assume that space ball motion events come in as + all the first 6 axes. Assume first 3 axes are XYZ + translations; second 3 axes are XYZ rotations. */ + if (devmot->first_axis == 0 && devmot->axes_count == 6) { + if (window->spaceMotion) + window->spaceMotion( + normalizeSpaceballDelta(0, devmot->axis_data[0]), + normalizeSpaceballDelta(1, devmot->axis_data[1]), + normalizeSpaceballDelta(2, devmot->axis_data[2])); + if (window->spaceRotate) + window->spaceRotate( + normalizeSpaceballAngle(3, devmot->axis_data[3]), + normalizeSpaceballAngle(4, devmot->axis_data[4]), + normalizeSpaceballAngle(5, devmot->axis_data[5])); + } + } + return 1; + } + } else if (__glutDeviceButtonPress + && event->type == __glutDeviceButtonPress) { + XDeviceButtonEvent *devbtn = (XDeviceButtonEvent *) event; + + window = __glutGetWindow(devbtn->window); + if (window) { + if (__glutTablet + && devbtn->deviceid == __glutTablet->device_id + && window->tabletButton + && devbtn->first_axis == 0 + && devbtn->axes_count == 2) { + tabletPosChange(window, devbtn->first_axis, devbtn->axes_count, + devbtn->axis_data); + window->tabletButton(devbtn->button, GLUT_DOWN, + window->tabletPos[0], window->tabletPos[1]); + } else if (__glutDials + && devbtn->deviceid == __glutDials->device_id + && window->buttonBox) { + window->buttonBox(devbtn->button, GLUT_DOWN); + } else if (__glutSpaceball + && devbtn->deviceid == __glutSpaceball->device_id + && window->spaceButton) { + window->spaceButton(devbtn->button, GLUT_DOWN); + } + return 1; + } + } else if (__glutDeviceButtonRelease + && event->type == __glutDeviceButtonRelease) { + XDeviceButtonEvent *devbtn = (XDeviceButtonEvent *) event; + + window = __glutGetWindow(devbtn->window); + if (window) { + if (__glutTablet + && devbtn->deviceid == __glutTablet->device_id + && window->tabletButton + && devbtn->first_axis == 0 + && devbtn->axes_count == 2) { + tabletPosChange(window, devbtn->first_axis, devbtn->axes_count, + devbtn->axis_data); + window->tabletButton(devbtn->button, GLUT_UP, + window->tabletPos[0], window->tabletPos[1]); + } else if (__glutDials + && devbtn->deviceid == __glutDials->device_id + && window->buttonBox) { + window->buttonBox(devbtn->button, GLUT_UP); + } else if (__glutSpaceball + && devbtn->deviceid == __glutSpaceball->device_id + && window->spaceButton) { + window->spaceButton(devbtn->button, GLUT_UP); + } + return 1; + } + } +#else + { + JOYINFOEX info; + int njoyId = 0; + int nConnected = 0; + MMRESULT result; + + /* Loop through all possible joystick IDs until we get the error + JOYERR_PARMS. Count the number of times we get JOYERR_NOERROR + indicating an installed joystick driver with a joystick currently + attached to the port. */ + while ((result = joyGetPosEx(njoyId++,&info)) != JOYERR_PARMS) { + if (result == JOYERR_NOERROR) { + ++nConnected; /* The count of connected joysticks. */ + } + } + } +#endif /* !_WIN32 */ + return 0; +} + +static GLUTeventParser eventParser = +{__glutProcessDeviceEvents, NULL}; + +static void +addDeviceEventParser(void) +{ + static Bool been_here = False; + + if (been_here) + return; + been_here = True; + __glutRegisterEventParser(&eventParser); +} + +static int +probeDevices(void) +{ + static Bool been_here = False; + static int support; +#if !defined(_WIN32) + XExtensionVersion *version; + XDeviceInfoPtr device_info, device; + XAnyClassPtr any; + XButtonInfoPtr b; + XValuatorInfoPtr v; + XAxisInfoPtr a; + int num_dev, btns, dials; + int i, j, k; +#endif /* !_WIN32 */ + + if (been_here) { + return support; + } + been_here = True; + +#if !defined(_WIN32) + version = XGetExtensionVersion(__glutDisplay, "XInputExtension"); + /* Ugh. XInput extension API forces annoying cast of a pointer + to a long so it can be compared with the NoSuchExtension + value (#defined to 1). */ + if (version == NULL || ((long) version) == NoSuchExtension) { + support = 0; + return support; + } + XFree(version); + device_info = XListInputDevices(__glutDisplay, &num_dev); + if (device_info) { + for (i = 0; i < num_dev; i++) { + /* XXX These are SGI names for these devices; + unfortunately, no good standard exists for standard + types of X input extension devices. */ + + device = &device_info[i]; + any = (XAnyClassPtr) device->inputclassinfo; + + if (!__glutSpaceball && !strcmp(device->name, "spaceball")) { + v = NULL; + b = NULL; + for (j = 0; j < device->num_classes; j++) { +#if defined(__cplusplus) || defined(c_plusplus) + switch (any->c_class) { +#else + switch (any->class) { +#endif + case ButtonClass: + b = (XButtonInfoPtr) any; + btns = b->num_buttons; + break; + case ValuatorClass: + v = (XValuatorInfoPtr) any; + /* Sanity check: at least 6 valuators? */ + if (v->num_axes < NUM_SPACEBALL_AXIS) + goto skip_device; + a = (XAxisInfoPtr) ((char *) v + sizeof(XValuatorInfo)); + for (k = 0; k < NUM_SPACEBALL_AXIS; k++, a++) { + __glutSpaceballRange[k].min = a->min_value; + __glutSpaceballRange[k].range = a->max_value - a->min_value; + } + break; + } + any = (XAnyClassPtr) ((char *) any + any->length); + } + if (v) { + __glutSpaceball = XOpenDevice(__glutDisplay, device->id); + if (__glutSpaceball) { + __glutNumSpaceballButtons = btns; + addDeviceEventParser(); + } + } + } else if (!__glutDials && !strcmp(device->name, "dial+buttons")) { + v = NULL; + b = NULL; + for (j = 0; j < device->num_classes; j++) { +#if defined(__cplusplus) || defined(c_plusplus) + switch (any->c_class) { +#else + switch (any->class) { +#endif + case ButtonClass: + b = (XButtonInfoPtr) any; + btns = b->num_buttons; + break; + case ValuatorClass: + v = (XValuatorInfoPtr) any; + /* Sanity check: at least 8 valuators? */ + if (v->num_axes < NUM_DIALS_AXIS) + goto skip_device; + dials = v->num_axes; + __glutDialsResolution = (int *) malloc(sizeof(int) * dials); + a = (XAxisInfoPtr) ((char *) v + sizeof(XValuatorInfo)); + for (k = 0; k < dials; k++, a++) { + __glutDialsResolution[k] = a->resolution; + } + break; + } + any = (XAnyClassPtr) ((char *) any + any->length); + } + if (v) { + __glutDials = XOpenDevice(__glutDisplay, device->id); + if (__glutDials) { + __glutNumButtonBoxButtons = btns; + __glutNumDials = dials; + addDeviceEventParser(); + } + } + } else if (!__glutTablet && !strcmp(device->name, "tablet")) { + v = NULL; + b = NULL; + for (j = 0; j < device->num_classes; j++) { +#if defined(__cplusplus) || defined(c_plusplus) + switch (any->c_class) { +#else + switch (any->class) { +#endif + case ButtonClass: + b = (XButtonInfoPtr) any; + btns = b->num_buttons; + break; + case ValuatorClass: + v = (XValuatorInfoPtr) any; + /* Sanity check: exactly 2 valuators? */ + if (v->num_axes != NUM_TABLET_AXIS) + goto skip_device; + a = (XAxisInfoPtr) ((char *) v + sizeof(XValuatorInfo)); + for (k = 0; k < NUM_TABLET_AXIS; k++, a++) { + __glutTabletRange[k].min = a->min_value; + __glutTabletRange[k].range = a->max_value - a->min_value; + } + break; + } + any = (XAnyClassPtr) ((char *) any + any->length); + } + if (v) { + __glutTablet = XOpenDevice(__glutDisplay, device->id); + if (__glutTablet) { + __glutNumTabletButtons = btns; + addDeviceEventParser(); + } + } + } else if (!strcmp(device->name, "mouse")) { + for (j = 0; j < device->num_classes; j++) { +#if defined(__cplusplus) || defined(c_plusplus) + if (any->c_class == ButtonClass) { +#else + if (any->class == ButtonClass) { +#endif + b = (XButtonInfoPtr) any; + __glutNumMouseButtons = b->num_buttons; + } + any = (XAnyClassPtr) ((char *) any + any->length); + } + } + skip_device:; + } + XFreeDeviceList(device_info); + } +#else /* _WIN32 */ + __glutNumMouseButtons = GetSystemMetrics(SM_CMOUSEBUTTONS); +#endif /* !_WIN32 */ + /* X Input extension might be supported, but only if there is + a tablet, dials, or spaceball do we claim devices are + supported. */ + support = __glutTablet || __glutDials || __glutSpaceball; + return support; +} + +void +__glutUpdateInputDeviceMask(GLUTwindow * window) +{ +#if !defined(_WIN32) + /* 5 (dial and buttons) + 5 (tablet locator and buttons) + 5 + (Spaceball buttons and axis) = 15 */ + XEventClass eventList[15]; + int rc, numEvents; + + rc = probeDevices(); + if (rc) { + numEvents = 0; + if (__glutTablet) { + if (window->tabletMotion) { + DeviceMotionNotify(__glutTablet, __glutDeviceMotionNotify, + eventList[numEvents]); + numEvents++; + } + if (window->tabletButton) { + DeviceButtonPress(__glutTablet, __glutDeviceButtonPress, + eventList[numEvents]); + numEvents++; + DeviceButtonPressGrab(__glutTablet, __glutDeviceButtonPressGrab, + eventList[numEvents]); + numEvents++; + DeviceButtonRelease(__glutTablet, __glutDeviceButtonRelease, + eventList[numEvents]); + numEvents++; + } + if (window->tabletMotion || window->tabletButton) { + DeviceStateNotify(__glutTablet, __glutDeviceStateNotify, + eventList[numEvents]); + numEvents++; + } + } + if (__glutDials) { + if (window->dials) { + DeviceMotionNotify(__glutDials, __glutDeviceMotionNotify, + eventList[numEvents]); + numEvents++; + } + if (window->buttonBox) { + DeviceButtonPress(__glutDials, __glutDeviceButtonPress, + eventList[numEvents]); + numEvents++; + DeviceButtonPressGrab(__glutDials, __glutDeviceButtonPressGrab, + eventList[numEvents]); + numEvents++; + DeviceButtonRelease(__glutDials, __glutDeviceButtonRelease, + eventList[numEvents]); + numEvents++; + } + if (window->dials || window->buttonBox) { + DeviceStateNotify(__glutDials, __glutDeviceStateNotify, + eventList[numEvents]); + numEvents++; + } + } + if (__glutSpaceball) { + if (window->spaceMotion || window->spaceRotate) { + DeviceMotionNotify(__glutSpaceball, __glutDeviceMotionNotify, + eventList[numEvents]); + numEvents++; + } + if (window->spaceButton) { + DeviceButtonPress(__glutSpaceball, __glutDeviceButtonPress, + eventList[numEvents]); + numEvents++; + DeviceButtonPressGrab(__glutSpaceball, __glutDeviceButtonPressGrab, + eventList[numEvents]); + numEvents++; + DeviceButtonRelease(__glutSpaceball, __glutDeviceButtonRelease, + eventList[numEvents]); + numEvents++; + } + if (window->spaceMotion || window->spaceRotate || window->spaceButton) { + DeviceStateNotify(__glutSpaceball, __glutDeviceStateNotify, + eventList[numEvents]); + numEvents++; + } + } +#if 0 + if (window->children) { + GLUTwindow *child = window->children; + + do { + XChangeDeviceDontPropagateList(__glutDisplay, child->win, + numEvents, eventList, AddToList); + child = child->siblings; + } while (child); + } +#endif + XSelectExtensionEvent(__glutDisplay, window->win, + eventList, numEvents); + if (window->overlay) { + XSelectExtensionEvent(__glutDisplay, window->overlay->win, + eventList, numEvents); + } + } else { + /* X Input extension not supported; no chance for exotic + input devices. */ + } +#endif /* !_WIN32 */ +} + +/* CENTRY */ +int APIENTRY +glutDeviceGet(GLenum param) +{ + probeDevices(); + switch (param) { + case GLUT_HAS_KEYBOARD: + case GLUT_HAS_MOUSE: + /* Assume window system always has mouse and keyboard. */ + return 1; + case GLUT_HAS_SPACEBALL: + return __glutSpaceball != NULL; + case GLUT_HAS_DIAL_AND_BUTTON_BOX: + return __glutDials != NULL; + case GLUT_HAS_TABLET: + return __glutTablet != NULL; + case GLUT_NUM_MOUSE_BUTTONS: + return __glutNumMouseButtons; + case GLUT_NUM_SPACEBALL_BUTTONS: + return __glutNumSpaceballButtons; + case GLUT_NUM_BUTTON_BOX_BUTTONS: + return __glutNumButtonBoxButtons; + case GLUT_NUM_DIALS: + return __glutNumDials; + case GLUT_NUM_TABLET_BUTTONS: + return __glutNumTabletButtons; + case GLUT_DEVICE_IGNORE_KEY_REPEAT: + return __glutCurrentWindow->ignoreKeyRepeat; +#ifndef _WIN32 + case GLUT_DEVICE_KEY_REPEAT: + { + XKeyboardState state; + + XGetKeyboardControl(__glutDisplay, &state); + return state.global_auto_repeat; + } + case GLUT_JOYSTICK_POLL_RATE: + return 0; +#else + case GLUT_DEVICE_KEY_REPEAT: + /* Win32 cannot globally disable key repeat. */ + return GLUT_KEY_REPEAT_ON; + case GLUT_JOYSTICK_POLL_RATE: + return __glutCurrentWindow->joyPollInterval; +#endif + case GLUT_HAS_JOYSTICK: + return __glutHasJoystick; + case GLUT_JOYSTICK_BUTTONS: + return __glutNumJoystickButtons; + case GLUT_JOYSTICK_AXES: + return __glutNumJoystickAxes; + default: + __glutWarning("invalid glutDeviceGet parameter: %d", param); + return -1; + } +} +/* ENDCENTRY */ |