diff options
Diffstat (limited to 'driver/multitouch.c')
| -rw-r--r-- | driver/multitouch.c | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/driver/multitouch.c b/driver/multitouch.c new file mode 100644 index 0000000..7e275b3 --- /dev/null +++ b/driver/multitouch.c @@ -0,0 +1,369 @@ +/*************************************************************************** + * + * Multitouch X driver + * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + **************************************************************************/ + +#include "gestures.h" + +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 +#include <X11/Xatom.h> +#include <xserver-properties.h> +#endif + +/* these should be user-configurable at some point */ +static const float vscroll_fraction = 0.05; +static const float hscroll_fraction = 0.05; +static const float vswipe_fraction = 0.25; +static const float hswipe_fraction = 0.25; +static const float scale_fraction = 0.05; +static const float rot_fraction = 0.05; + +/* flip these to enable event debugging */ +#if 1 +#define TRACE1(format, arg1) +#define TRACE2(format, arg1, arg2) +#else +#define TRACE1(format, arg1) xf86Msg(X_INFO, format, arg1) +#define TRACE2(format, arg1, arg2) xf86Msg(X_INFO, format, arg1, arg2) +#endif + +/* button mapping simplified */ +#define PROPMAP(m, x, y) m[x] = XIGetKnownProperty(y) + +static void pointer_control(DeviceIntPtr dev, PtrCtrl *ctrl) +{ + xf86Msg(X_INFO, "pointer_control\n"); +} + +static int pointer_property(DeviceIntPtr dev, + Atom property, + XIPropertyValuePtr prop, + BOOL checkonly) +{ + xf86Msg(X_INFO, "pointer_property\n"); + return Success; +} + +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 +static void initAxesLabels(Atom map[2]) +{ + memset(map, 0, 2 * sizeof(Atom)); + PROPMAP(map, 0, AXIS_LABEL_PROP_REL_X); + PROPMAP(map, 1, AXIS_LABEL_PROP_REL_Y); +} + +static void initButtonLabels(Atom map[DIM_BUTTON]) +{ + memset(map, 0, DIM_BUTTON * sizeof(Atom)); + PROPMAP(map, MT_BUTTON_LEFT, BTN_LABEL_PROP_BTN_LEFT); + PROPMAP(map, MT_BUTTON_MIDDLE, BTN_LABEL_PROP_BTN_MIDDLE); + PROPMAP(map, MT_BUTTON_RIGHT, BTN_LABEL_PROP_BTN_RIGHT); + PROPMAP(map, MT_BUTTON_WHEEL_UP, BTN_LABEL_PROP_BTN_WHEEL_UP); + PROPMAP(map, MT_BUTTON_WHEEL_DOWN, BTN_LABEL_PROP_BTN_WHEEL_DOWN); + PROPMAP(map, MT_BUTTON_HWHEEL_LEFT, BTN_LABEL_PROP_BTN_HWHEEL_LEFT); + PROPMAP(map, MT_BUTTON_HWHEEL_RIGHT, BTN_LABEL_PROP_BTN_HWHEEL_RIGHT); + /* how to map swipe buttons? */ + PROPMAP(map, MT_BUTTON_SWIPE_UP, BTN_LABEL_PROP_BTN_0); + PROPMAP(map, MT_BUTTON_SWIPE_DOWN, BTN_LABEL_PROP_BTN_1); + PROPMAP(map, MT_BUTTON_SWIPE_LEFT, BTN_LABEL_PROP_BTN_2); + PROPMAP(map, MT_BUTTON_SWIPE_RIGHT, BTN_LABEL_PROP_BTN_3); + /* how to map scale and rotate? */ + PROPMAP(map, MT_BUTTON_SCALE_DOWN, BTN_LABEL_PROP_BTN_4); + PROPMAP(map, MT_BUTTON_SCALE_UP, BTN_LABEL_PROP_BTN_5); + PROPMAP(map, MT_BUTTON_ROTATE_LEFT, BTN_LABEL_PROP_BTN_6); + PROPMAP(map, MT_BUTTON_ROTATE_RIGHT, BTN_LABEL_PROP_BTN_7); +} +#endif + +static int device_init(DeviceIntPtr dev, LocalDevicePtr local) +{ + struct MTouch *mt = local->private; + unsigned char btmap[DIM_BUTTON + 1] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 + }; +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 + Atom axes_labels[2], btn_labels[DIM_BUTTON]; + initAxesLabels(axes_labels); + initButtonLabels(btn_labels); +#endif + + local->fd = xf86OpenSerial(local->options); + if (local->fd < 0) { + xf86Msg(X_ERROR, "multitouch: cannot open device\n"); + return !Success; + } + if (configure_mtouch(mt, local->fd)) { + xf86Msg(X_ERROR, "multitouch: cannot configure device\n"); + return !Success; + } + xf86CloseSerial(local->fd); + +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3 + InitPointerDeviceStruct((DevicePtr)dev, + btmap, DIM_BUTTON, + GetMotionHistory, + pointer_control, + GetMotionHistorySize(), + 2); +#elif GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 7 + InitPointerDeviceStruct((DevicePtr)dev, + btmap, DIM_BUTTON, + pointer_control, + GetMotionHistorySize(), + 2); +#elif GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 + InitPointerDeviceStruct((DevicePtr)dev, + btmap, DIM_BUTTON, btn_labels, + pointer_control, + GetMotionHistorySize(), + 2, axes_labels); +#else +#error "Unsupported ABI_XINPUT_VERSION" +#endif + + xf86InitValuatorAxisStruct(dev, 0, +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 + axes_labels[0], +#endif + mt->caps.abs_position_x.minimum, + mt->caps.abs_position_x.maximum, + 1, 0, 1); + xf86InitValuatorDefaults(dev, 0); + xf86InitValuatorAxisStruct(dev, 1, +#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 + axes_labels[1], +#endif + mt->caps.abs_position_y.minimum, + mt->caps.abs_position_y.maximum, + 1, 0, 1); + xf86InitValuatorDefaults(dev, 1); + + XIRegisterPropertyHandler(dev, pointer_property, NULL, NULL); + + return Success; +} + +static int device_on(LocalDevicePtr local) +{ + struct MTouch *mt = local->private; + local->fd = xf86OpenSerial(local->options); + if (local->fd < 0) { + xf86Msg(X_ERROR, "multitouch: cannot open device\n"); + return !Success; + } + if (open_mtouch(mt, local->fd)) { + xf86Msg(X_ERROR, "multitouch: cannot grab device\n"); + return !Success; + } + xf86AddEnabledDevice(local); + return Success; +} + +static int device_off(LocalDevicePtr local) +{ + struct MTouch *mt = local->private; + xf86RemoveEnabledDevice(local); + if (close_mtouch(mt, local->fd)) + xf86Msg(X_WARNING, "multitouch: cannot ungrab device\n"); + xf86CloseSerial(local->fd); + return Success; +} + +static int device_close(LocalDevicePtr local) +{ + return Success; +} + +static void tickle_button(LocalDevicePtr local, int id) +{ + xf86PostButtonEvent(local->dev, FALSE, id, 1, 0, 0); + xf86PostButtonEvent(local->dev, FALSE, id, 0, 0, 0); +} + +static void button_scroll(LocalDevicePtr local, + int btdec, int btinc, + int *scroll, int step, + int delta) +{ + *scroll += delta; + while (*scroll > step) { + tickle_button(local, btinc); + *scroll -= step; + } + while (*scroll < -step) { + tickle_button(local, btdec); + *scroll += step; + } +} + +static void handle_gestures(LocalDevicePtr local, + const struct Gestures *gs, + const struct Capabilities *caps) +{ + static int vscroll, hscroll, vswipe, hswipe, scale, rot; + int vscrollstep = 1 + vscroll_fraction * get_cap_ysize(caps); + int hscrollstep = 1 + hscroll_fraction * get_cap_xsize(caps); + int vswipestep = 1 + vswipe_fraction * get_cap_ysize(caps); + int hswipestep = 1 + hswipe_fraction * get_cap_xsize(caps); + int scalestep = 1 + scale_fraction * get_cap_xsize(caps); + int rotstep = 1 + rot_fraction * get_cap_xsize(caps); + int i; + if (!gs->same_fingers) { + vscroll = 0; + hscroll = 0; + vswipe = 0; + hswipe = 0; + } + for (i = 0; i < DIM_BUTTON; i++) { + if (GETBIT(gs->btmask, i)) { + xf86PostButtonEvent(local->dev, FALSE, + i + 1, GETBIT(gs->btdata, i), 0, 0); + TRACE2("button bit: %d %d\n", i, GETBIT(gs->btdata, i)); + } + } + if (GETBIT(gs->type, GS_MOVE)) { + xf86PostMotionEvent(local->dev, 0, 0, 2, + gs->dx, gs->dy); + TRACE2("motion: %d %d\n", gs->dx, gs->dy); + } + if (GETBIT(gs->type, GS_VSCROLL)) { + button_scroll(local, 4, 5, &vscroll, vscrollstep, gs->dy); + TRACE1("vscroll: %d\n", gs->dy); + } + if (GETBIT(gs->type, GS_HSCROLL)) { + button_scroll(local, 6, 7, &hscroll, hscrollstep, gs->dx); + TRACE1("hscroll: %d\n", gs->dx); + } + if (GETBIT(gs->type, GS_VSWIPE)) { + button_scroll(local, 8, 9, &vswipe, vswipestep, gs->dy); + TRACE1("vswipe: %d\n", gs->dy); + } + if (GETBIT(gs->type, GS_HSWIPE)) { + button_scroll(local, 10, 11, &hswipe, hswipestep, gs->dx); + TRACE1("hswipe: %d\n", gs->dx); + } + if (GETBIT(gs->type, GS_SCALE)) { + button_scroll(local, 12, 13, &scale, scalestep, gs->scale); + TRACE1("scale: %d\n", gs->scale); + } + if (GETBIT(gs->type, GS_ROTATE)) { + button_scroll(local, 14, 15, &rot, rotstep, gs->rot); + TRACE1("rotate: %d\n", gs->rot); + } +} + +/* called for each full received packet from the touchpad */ +static void read_input(LocalDevicePtr local) +{ + struct Gestures gs; + struct MTouch *mt = local->private; + while (read_synchronized_event(mt, local->fd)) { + parse_event(mt); + extract_gestures(&gs, mt); + handle_gestures(local, &gs, &mt->caps); + } +} + +static Bool device_control(DeviceIntPtr dev, int mode) +{ + LocalDevicePtr local = dev->public.devicePrivate; + switch (mode) { + case DEVICE_INIT: + xf86Msg(X_INFO, "device control: init\n"); + return device_init(dev, local); + case DEVICE_ON: + xf86Msg(X_INFO, "device control: on\n"); + return device_on(local); + case DEVICE_OFF: + xf86Msg(X_INFO, "device control: off\n"); + return device_off(local); + case DEVICE_CLOSE: + xf86Msg(X_INFO, "device control: close\n"); + return device_close(local); + default: + xf86Msg(X_INFO, "device control: default\n"); + return BadValue; + } +} + + +static InputInfoPtr preinit(InputDriverPtr drv, IDevPtr dev, int flags) +{ + struct MTouch *mt; + InputInfoPtr local = xf86AllocateInput(drv, 0); + if (!local) + goto error; + mt = xcalloc(1, sizeof(struct MTouch)); + if (!mt) + goto error; + + local->name = dev->identifier; + local->type_name = XI_TOUCHPAD; + local->device_control = device_control; + local->read_input = read_input; + local->private = mt; + local->flags = XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS; + local->conf_idev = dev; + + xf86CollectInputOptions(local, NULL, NULL); + /* xf86OptionListReport(local->options); */ + xf86ProcessCommonOptions(local, local->options); + + local->flags |= XI86_CONFIGURED; + error: + return local; +} + +static void uninit(InputDriverPtr drv, InputInfoPtr local, int flags) +{ + xfree(local->private); + local->private = 0; + xf86DeleteInput(local, 0); +} + +static InputDriverRec MULTITOUCH = { + 1, + "multitouch", + NULL, + preinit, + uninit, + NULL, + 0 +}; + +static XF86ModuleVersionInfo VERSION = { + "multitouch", + MODULEVENDORSTRING, + MODINFOSTRING1, + MODINFOSTRING2, + XORG_VERSION_CURRENT, + 0, 1, 0, + ABI_CLASS_XINPUT, + ABI_XINPUT_VERSION, + MOD_CLASS_XINPUT, + {0, 0, 0, 0} +}; + +static pointer setup(pointer module, pointer options, int *errmaj, int *errmin) +{ + xf86AddInputDriver(&MULTITOUCH, module, 0); + return module; +} + +XF86ModuleData multitouchModuleData = {&VERSION, &setup, NULL }; |