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handler.cc
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handler.cc
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/*
* Copyright (c) 2008-2012, Thomas Jaeger <[email protected]>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "handler.h"
#include "log.h"
#include "main.h"
#include "trace.h"
#include "win.h" // Why?
#include "prefs.h" // Why?
#include <gtkmm.h>
#include <X11/Xutil.h>
#include <X11/extensions/XTest.h>
#include <X11/XKBlib.h>
#include <X11/Xproto.h>
XState *xstate = nullptr;
extern Window get_app_window(Window w);
extern Source<Window> current_app_window;
extern boost::shared_ptr<Trace> trace;
boost::shared_ptr<sigc::slot<void, RStroke> > stroke_action;
static XAtom EASYSTROKE_PING("EASYSTROKE_PING");
bool XState::idle() {
return !handler->child;
}
void XState::queue(sigc::slot<void> f) {
if (idle()) {
f();
XFlush(dpy);
} else
queued.push_back(f);
}
void XState::handle_enter_leave(XEvent &ev) {
if (ev.xcrossing.mode == NotifyGrab)
return;
if (ev.xcrossing.detail == NotifyInferior)
return;
Window w = ev.xcrossing.window;
if (ev.type == EnterNotify) {
current_app_window.set(get_app_window(w));
g_debug("Entered window 0x%lx -> 0x%lx\n", w, current_app_window.get());
} else {
g_warning("Error: Bogus Enter/Leave event\n");
};
}
#define H (handler->top())
void XState::handle_event(XEvent &ev) {
switch(ev.type) {
case EnterNotify:
case LeaveNotify:
handle_enter_leave(ev);
return;
case PropertyNotify:
if (current_app_window.get() == ev.xproperty.window && ev.xproperty.atom == XA_WM_CLASS)
current_app_window.notify();
return;
case ButtonPress:
g_debug("Press (master): %d (%d, %d) at t = %ld\n", ev.xbutton.button, ev.xbutton.x, ev.xbutton.y, ev.xbutton.time);
H->press_master(ev.xbutton.button, ev.xbutton.time);
return;
case ClientMessage:
if (ev.xclient.window != ping_window)
return;
if (ev.xclient.message_type == *EASYSTROKE_PING) {
g_debug("Pong\n");
H->pong();
}
return;
case MappingNotify:
if (ev.xmapping.request == MappingPointer)
update_core_mapping();
if (ev.xmapping.request == MappingKeyboard || ev.xmapping.request == MappingModifier)
XRefreshKeyboardMapping(&ev.xmapping);
return;
case GenericEvent:
if (ev.xcookie.extension == grabber->opcode && XGetEventData(dpy, &ev.xcookie)) {
handle_xi2_event((XIDeviceEvent *)ev.xcookie.data);
XFreeEventData(dpy, &ev.xcookie);
}
}
}
void XState::activate_window(Window w, Time t) {
static XAtom _NET_ACTIVE_WINDOW("_NET_ACTIVE_WINDOW");
static XAtom _NET_WM_WINDOW_TYPE("_NET_WM_WINDOW_TYPE");
static XAtom _NET_WM_WINDOW_TYPE_DOCK("_NET_WM_WINDOW_TYPE_DOCK");
static XAtom WM_PROTOCOLS("WM_PROTOCOLS");
static XAtom WM_TAKE_FOCUS("WM_TAKE_FOCUS");
if (w == get_window(ROOT, *_NET_ACTIVE_WINDOW))
return;
Atom window_type = get_atom(w, *_NET_WM_WINDOW_TYPE);
if (window_type == *_NET_WM_WINDOW_TYPE_DOCK)
return;
XWMHints *wm_hints = XGetWMHints(dpy, w);
if (wm_hints) {
bool input = wm_hints->input;
XFree(wm_hints);
if (!input)
return;
}
if (!has_atom(w, *WM_PROTOCOLS, *WM_TAKE_FOCUS))
return;
XWindowAttributes attr;
if (XGetWindowAttributes(dpy, w, &attr) && attr.override_redirect)
return;
g_debug("Giving focus to window 0x%lx\n", w);
icccm_client_message(w, *WM_TAKE_FOCUS, t);
}
Window XState::get_window(Window w, Atom prop) {
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char *prop_return = nullptr;
if (XGetWindowProperty(dpy, w, prop, 0, sizeof(Atom), False, XA_WINDOW, &actual_type, &actual_format,
&nitems, &bytes_after, &prop_return) != Success)
return None;
if (!prop_return)
return None;
Window ret = *(Window *)prop_return;
XFree(prop_return);
return ret;
}
Atom XState::get_atom(Window w, Atom prop) {
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char *prop_return = nullptr;
if (XGetWindowProperty(dpy, w, prop, 0, sizeof(Atom), False, XA_ATOM, &actual_type, &actual_format,
&nitems, &bytes_after, &prop_return) != Success)
return None;
if (!prop_return)
return None;
Atom atom = *(Atom *)prop_return;
XFree(prop_return);
return atom;
}
bool XState::has_atom(Window w, Atom prop, Atom value) {
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char *prop_return = nullptr;
if (XGetWindowProperty(dpy, w, prop, 0, sizeof(Atom), False, XA_ATOM, &actual_type, &actual_format,
&nitems, &bytes_after, &prop_return) != Success)
return None;
if (!prop_return)
return None;
Atom *atoms = (Atom *)prop_return;
bool ans = false;
for (unsigned long i = 0; i < nitems; i++)
if (atoms[i] == value)
ans = true;
XFree(prop_return);
return ans;
}
void XState::icccm_client_message(Window w, Atom a, Time t) {
static XAtom WM_PROTOCOLS("WM_PROTOCOLS");
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = w;
ev.message_type = *WM_PROTOCOLS;
ev.format = 32;
ev.data.l[0] = a;
ev.data.l[1] = t;
XSendEvent(dpy, w, False, 0, (XEvent *)&ev);
}
static void print_coordinates(XIValuatorState *valuators, double *values) {
int n = 0;
for (int i = valuators->mask_len - 1; i >= 0; i--)
if (XIMaskIsSet(valuators->mask, i)) {
n = i+1;
break;
}
bool first = true;
int elt = 0;
for (int i = 0; i < n; i++) {
if (first)
first = false;
else
g_debug(", ");
if (XIMaskIsSet(valuators->mask, i))
g_debug("%.3f", values[elt++]);
else
g_debug("*");
}
}
static double get_axis(XIValuatorState &valuators, int axis) {
if (axis < 0 || !XIMaskIsSet(valuators.mask, axis))
return 0.0;
double *val = valuators.values;
for (int i = 0; i < axis; i++)
if (XIMaskIsSet(valuators.mask, i))
val++;
return *val;
}
void XState::report_xi2_event(XIDeviceEvent *event, const char *type) {
g_debug("%s (XI2): ", type);
if (event->detail)
g_debug("%d ", event->detail);
g_debug("(%.3f, %.3f) - (", event->root_x, event->root_y);
print_coordinates(&event->valuators, event->valuators.values);
g_debug(") at t = %ld\n", event->time);
}
void XState::handle_xi2_event(XIDeviceEvent *event) {
switch (event->evtype) {
case XI_ButtonPress:
if (log_utils::isEnabled(G_LOG_LEVEL_DEBUG))
report_xi2_event(event, "Press");
if (xinput_pressed.size()) {
if (!current_dev || current_dev->dev != event->deviceid)
break;
} else {
current_app_window.set(get_app_window(event->child));
g_debug("Active window 0x%lx -> 0x%lx\n", event->child, current_app_window.get());
}
current_dev = grabber->get_xi_dev(event->deviceid);
if (!current_dev) {
g_warning("Warning: Spurious device event\n");
break;
}
if (current_dev->master)
XISetClientPointer(dpy, None, current_dev->master);
if (!xinput_pressed.size()) {
guint default_mods = grabber->get_default_mods(event->detail);
if (default_mods == AnyModifier || default_mods == (guint)event->mods.base)
modifiers = AnyModifier;
else
modifiers = event->mods.base;
}
xinput_pressed.insert(event->detail);
in_proximity = get_axis(event->valuators, current_dev->proximity_axis);
H->press(event->detail, create_triple(event->root_x, event->root_y, event->time));
break;
case XI_ButtonRelease:
if (log_utils::isEnabled(G_LOG_LEVEL_DEBUG))
report_xi2_event(event, "Release");
if (!current_dev || current_dev->dev != event->deviceid)
break;
xinput_pressed.erase(event->detail);
in_proximity = get_axis(event->valuators, current_dev->proximity_axis);
H->release(event->detail, create_triple(event->root_x, event->root_y, event->time));
break;
case XI_Motion:
if (log_utils::isEnabled(G_LOG_LEVEL_DEBUG))
report_xi2_event(event, "Motion");
if (!current_dev || current_dev->dev != event->deviceid)
break;
H->motion(create_triple(event->root_x, event->root_y, event->time));
break;
case XI_RawMotion:
in_proximity = get_axis(((XIRawEvent *)event)->valuators, current_dev->proximity_axis);
handle_raw_motion((XIRawEvent *)event);
break;
case XI_HierarchyChanged:
if (grabber->hierarchy_changed((XIHierarchyEvent *)event))
win->prefs_tab->update_device_list();
}
}
void XState::handle_raw_motion(XIRawEvent *event) {
if (!current_dev || current_dev->dev != event->deviceid)
return;
double x = 0.0, y = 0.0;
bool abs_x = current_dev->absolute;
bool abs_y = current_dev->absolute;
int i = 0;
if (XIMaskIsSet(event->valuators.mask, 0))
x = event->raw_values[i++];
else
abs_x = false;
if (XIMaskIsSet(event->valuators.mask, 1))
y = event->raw_values[i++];
else
abs_y = false;
if (log_utils::isEnabled(G_LOG_LEVEL_DEBUG)) {
g_debug("Raw motion (XI2): (");
print_coordinates(&event->valuators, event->raw_values);
g_debug(") at t = %ld\n", event->time);
}
H->raw_motion(create_triple(x * current_dev->scale_x, y * current_dev->scale_y, event->time), abs_x, abs_y);
}
#undef H
bool XState::handle(Glib::IOCondition) {
while (XPending(dpy)) {
try {
XEvent ev;
XNextEvent(dpy, &ev);
if (!grabber->handle(ev))
handle_event(ev);
} catch (GrabFailedException &e) {
g_error("%s", e.what());
}
}
return true;
}
void XState::update_core_mapping() {
unsigned char map[MAX_BUTTONS];
int n = XGetPointerMapping(dpy, map, MAX_BUTTONS);
core_inv_map.clear();
for (int i = n-1; i; i--)
if (map[i] == i+1)
core_inv_map.erase(i+1);
else
core_inv_map[map[i]] = i+1;
}
void XState::fake_core_button(guint b, bool press) {
if (core_inv_map.count(b))
b = core_inv_map[b];
XTestFakeButtonEvent(dpy, b, press, CurrentTime);
}
void XState::fake_click(guint b) {
fake_core_button(b, true);
fake_core_button(b, false);
}
void Handler::replace_child(Handler *c) {
if (child)
delete child;
child = c;
if (child)
child->parent = this;
if (log_utils::isEnabled(G_LOG_LEVEL_DEBUG)) {
std::string stack;
for (Handler *h = child ? child : this; h; h=h->parent) {
stack = h->name() + " " + stack;
}
g_debug("New event handling stack: %s\n", stack.c_str());
}
Handler *new_handler = child ? child : this;
grabber->grab(new_handler->grab_mode());
if (child)
child->init();
while (xstate->queued.size() && xstate->idle()) {
(*xstate->queued.begin())();
xstate->queued.pop_front();
}
}
class IgnoreHandler : public Handler {
RModifiers mods;
bool proximity;
public:
IgnoreHandler(RModifiers mods_) : mods(mods_), proximity(xstate->in_proximity && prefs.proximity.get()) {}
virtual void press(guint b, RTriple e) {
if (xstate->current_dev->master) {
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
XTestFakeButtonEvent(dpy, b, true, CurrentTime);
}
}
virtual void motion(RTriple e) {
if (xstate->current_dev->master)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
if (proximity && !xstate->in_proximity)
parent->replace_child(nullptr);
}
virtual void release(guint b, RTriple e) {
if (xstate->current_dev->master) {
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
XTestFakeButtonEvent(dpy, b, false, CurrentTime);
}
if (proximity ? !xstate->in_proximity : !xstate->xinput_pressed.size())
parent->replace_child(nullptr);
}
virtual std::string name() { return "Ignore"; }
virtual Grabber::State grab_mode() { return Grabber::NONE; }
};
class ButtonHandler : public Handler {
RModifiers mods;
guint button, real_button;
bool proximity;
public:
ButtonHandler(RModifiers mods_, guint button_) :
mods(mods_),
button(button_),
real_button(0),
proximity(xstate->in_proximity && prefs.proximity.get())
{}
virtual void press(guint b, RTriple e) {
if (xstate->current_dev->master) {
if (!real_button)
real_button = b;
if (real_button == b)
b = button;
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
XTestFakeButtonEvent(dpy, b, true, CurrentTime);
}
}
virtual void motion(RTriple e) {
if (xstate->current_dev->master)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
if (proximity && !xstate->in_proximity)
parent->replace_child(nullptr);
}
virtual void release(guint b, RTriple e) {
if (xstate->current_dev->master) {
if (real_button == b)
b = button;
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
XTestFakeButtonEvent(dpy, b, false, CurrentTime);
}
if (proximity ? !xstate->in_proximity : !xstate->xinput_pressed.size())
parent->replace_child(nullptr);
}
virtual std::string name() { return "Button"; }
virtual Grabber::State grab_mode() { return Grabber::NONE; }
};
void XState::bail_out() {
handler->replace_child(nullptr);
xinput_pressed.clear();
XFlush(dpy);
}
int XState::xErrorHandler(Display *dpy2, XErrorEvent *e) {
if (dpy != dpy2)
return xstate->oldHandler(dpy2, e);
if (e->error_code == BadWindow) {
switch (e->request_code) {
case X_ChangeWindowAttributes:
case X_GetProperty:
case X_QueryTree:
return 0;
}
}
char text[64];
XGetErrorText(dpy, e->error_code, text, sizeof text);
char msg[16];
snprintf(msg, sizeof msg, "%d", e->request_code);
char def[128];
if (e->request_code < 128)
snprintf(def, sizeof def, "request_code=%d, minor_code=%d", e->request_code, e->minor_code);
else
snprintf(def, sizeof def, "extension=%s, request_code=%d", xstate->opcodes[e->request_code].c_str(), e->minor_code);
char dbtext[128];
XGetErrorDatabaseText(dpy, "XRequest", msg, def, dbtext, sizeof dbtext);
g_warning("XError: %s: %s\n", text, dbtext);
return 0;
}
int XState::xIOErrorHandler(Display *dpy2) {
if (dpy != dpy2)
return xstate->oldIOHandler(dpy2);
g_error("Connection to X server lost");
quit();
return 0;
}
void XState::ping() {
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = ping_window;
ev.message_type = *EASYSTROKE_PING;
ev.format = 32;
XSendEvent(dpy, ping_window, False, 0, (XEvent *)&ev);
XFlush(dpy);
}
void XState::remove_device(int deviceid) {
if (current_dev && current_dev->dev == deviceid)
current_dev = nullptr;
}
void XState::ungrab(int deviceid) {
if (current_dev && current_dev->dev == deviceid)
xinput_pressed.clear();
}
class WaitForPongHandler : public Handler, protected Timeout {
public:
WaitForPongHandler() { set_timeout(100); }
virtual void timeout() {
g_warning("%s timed out\n", "WaitForPongHandler");
xstate->bail_out();
}
virtual void pong() { parent->replace_child(nullptr); }
virtual std::string name() { return "WaitForPong"; }
virtual Grabber::State grab_mode() { return parent->grab_mode(); }
};
class AbstractScrollHandler : public Handler {
bool have_x, have_y;
float last_x, last_y;
Time last_t;
float offset_x, offset_y;
Glib::ustring str;
int orig_x, orig_y;
protected:
AbstractScrollHandler() : have_x(false), have_y(false), last_x(0.0), last_y(0.0), last_t(0), offset_x(0.0), offset_y(0.0) {
if (!prefs.move_back.get() || (xstate->current_dev && xstate->current_dev->absolute))
return;
Window dummy1, dummy2;
int dummy3, dummy4;
unsigned int dummy5;
XQueryPointer(dpy, ROOT, &dummy1, &dummy2, &orig_x, &orig_y, &dummy3, &dummy4, &dummy5);
}
virtual void fake_wheel(int b1, int n1, int b2, int n2) {
for (int i = 0; i<n1; i++)
xstate->fake_click(b1);
for (int i = 0; i<n2; i++)
xstate->fake_click(b2);
}
static float curve(float v) {
return v * exp(log(abs(v))/3);
}
protected:
void move_back() {
if (!prefs.move_back.get() || (xstate->current_dev && xstate->current_dev->absolute))
return;
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), orig_x, orig_y, 0);
}
public:
virtual void raw_motion(RTriple e, bool abs_x, bool abs_y) {
float dx = abs_x ? (have_x ? e->x - last_x : 0) : e->x;
float dy = abs_y ? (have_y ? e->y - last_y : 0) : e->y;
if (abs_x) {
last_x = e->x;
have_x = true;
}
if (abs_y) {
last_y = e->y;
have_y = true;
}
if (!last_t) {
last_t = e->t;
return;
}
if (e->t == last_t)
return;
int dt = e->t - last_t;
last_t = e->t;
double factor = (prefs.scroll_invert.get() ? 1.0 : -1.0) * prefs.scroll_speed.get();
offset_x += factor * curve(dx/dt)*dt/20.0;
offset_y += factor * curve(dy/dt)*dt/10.0;
int b1 = 0, n1 = 0, b2 = 0, n2 = 0;
if (abs(offset_x) > 1.0) {
n1 = (int)floor(abs(offset_x));
if (offset_x > 0) {
b1 = 7;
offset_x -= n1;
} else {
b1 = 6;
offset_x += n1;
}
}
if (abs(offset_y) > 1.0) {
if (abs(offset_y) < 1.0)
return;
n2 = (int)floor(abs(offset_y));
if (offset_y > 0) {
b2 = 5;
offset_y -= n2;
} else {
b2 = 4;
offset_y += n2;
}
}
if (n1 || n2)
fake_wheel(b1,n1, b2,n2);
}
};
class ScrollHandler : public AbstractScrollHandler {
RModifiers mods;
bool proximity;
public:
ScrollHandler(RModifiers mods_) : mods(mods_) {
proximity = xstate->in_proximity && prefs.proximity.get();
}
virtual void raw_motion(RTriple e, bool abs_x, bool abs_y) {
if (proximity && !xstate->in_proximity) {
parent->replace_child(nullptr);
move_back();
}
if (xstate->xinput_pressed.size())
AbstractScrollHandler::raw_motion(e, abs_x, abs_y);
}
virtual void press_master(guint b, Time t) {
xstate->fake_core_button(b, false);
}
virtual void release(guint b, RTriple e) {
if ((proximity && xstate->in_proximity) || xstate->xinput_pressed.size())
return;
parent->replace_child(0);
move_back();
}
virtual std::string name() { return "Scroll"; }
virtual Grabber::State grab_mode() { return Grabber::RAW; }
};
class ScrollAdvancedHandler : public AbstractScrollHandler {
RModifiers m;
guint &rb;
public:
ScrollAdvancedHandler(RModifiers m_, guint &rb_) : m(m_), rb(rb_) {}
virtual void fake_wheel(int b1, int n1, int b2, int n2) {
AbstractScrollHandler::fake_wheel(b1, n1, b2, n2);
rb = 0;
}
virtual void release(guint b, RTriple e) {
Handler *p = parent;
p->replace_child(nullptr);
p->release(b, e);
move_back();
}
virtual void press(guint b, RTriple e) {
Handler *p = parent;
p->replace_child(nullptr);
p->press(b, e);
move_back();
}
virtual std::string name() { return "ScrollAdvanced"; }
virtual Grabber::State grab_mode() { return Grabber::RAW; }
};
class AdvancedStrokeActionHandler : public Handler {
RStroke s;
public:
AdvancedStrokeActionHandler(RStroke s_, RTriple e) : s(s_) {}
virtual void press(guint b, RTriple e) {
if (stroke_action) {
s->button = b;
(*stroke_action)(s);
}
}
virtual void release(guint b, RTriple e) {
if (stroke_action)
(*stroke_action)(s);
if (xstate->xinput_pressed.size() == 0)
parent->replace_child(nullptr);
}
virtual std::string name() { return "InstantStrokeAction"; }
virtual Grabber::State grab_mode() { return Grabber::NONE; }
};
class AdvancedHandler : public Handler {
RTriple e;
guint remap_from, remap_to;
Time click_time;
guint replay_button;
RTriple replay_orig;
std::map<guint, RAction> as;
std::map<guint, RRanking> rs;
std::map<guint, RModifiers> mods;
RModifiers sticky_mods;
guint button1, button2;
RPreStroke replay;
void show_ranking(guint b, RTriple e) {
if (!rs.count(b))
return;
Ranking::queue_show(rs[b], e);
rs.erase(b);
}
AdvancedHandler(RStroke s, RTriple e_, guint b1, guint b2, RPreStroke replay_) :
e(e_), remap_from(0), remap_to(0), click_time(0), replay_button(0),
button1(b1), button2(b2), replay(replay_) {
if (s)
actions.get_action_list(grabber->current_class->get())->handle_advanced(s, as, rs, b1, b2);
}
public:
static Handler *create(RStroke s, RTriple e, guint b1, guint b2, RPreStroke replay) {
if (stroke_action && s)
return new AdvancedStrokeActionHandler(s, e);
else
return new AdvancedHandler(s, e, b1, b2, replay);
}
virtual void init() {
if (replay && replay->size()) {
bool replay_first = !as.count(button2);
PreStroke::iterator i = replay->begin();
if (replay_first)
press(button2 ? button2 : button1, *i);
while (i != replay->end())
motion(*i++);
if (!replay_first)
press(button2 ? button2 : button1, e);
} else {
press(button2 ? button2 : button1, e);
}
replay.reset();
}
virtual void press(guint b, RTriple e) {
if (xstate->current_dev->master)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
click_time = 0;
if (remap_to) {
xstate->fake_core_button(remap_to, false);
}
remap_from = 0;
remap_to = 0;
replay_button = 0;
guint bb = (b == button1) ? button2 : b;
show_ranking(bb, e);
if (!as.count(bb)) {
sticky_mods.reset();
if (xstate->current_dev->master)
XTestFakeButtonEvent(dpy, b, true, CurrentTime);
return;
}
RAction act = as[bb];
if (IS_SCROLL(act)) {
click_time = e->t;
replay_button = b;
replay_orig = e;
RModifiers m = act->prepare();
sticky_mods.reset();
return replace_child(new ScrollAdvancedHandler(m, replay_button));
}
if (IS_IGNORE(act)) {
click_time = e->t;
replay_button = b;
replay_orig = e;
}
IF_BUTTON(act, b2) {
// This is kind of a hack: Store modifiers in
// sticky_mods, so that they are automatically released
// on the next press
sticky_mods = act->prepare();
remap_from = b;
remap_to = b2;
xstate->fake_core_button(b2, true);
return;
}
mods[b] = act->prepare();
if (IS_KEY(act)) {
if (mods_equal(sticky_mods, mods[b]))
mods[b] = sticky_mods;
else
sticky_mods = mods[b];
} else
sticky_mods.reset();
act->run();
}
virtual void motion(RTriple e) {
if (replay_button && hypot(replay_orig->x - e->x, replay_orig->y - e->y) > 16)
replay_button = 0;
if (xstate->current_dev->master)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
}
virtual void release(guint b, RTriple e) {
if (xstate->current_dev->master)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
if (remap_to) {
xstate->fake_core_button(remap_to, false);
}
guint bb = (b == button1) ? button2 : b;
if (!as.count(bb)) {
sticky_mods.reset();
if (xstate->current_dev->master)
XTestFakeButtonEvent(dpy, b, false, CurrentTime);
}
if (xstate->xinput_pressed.size() == 0) {
if (e->t < click_time + 250 && b == replay_button) {
sticky_mods.reset();
mods.clear();
xstate->fake_click(b);
}
return parent->replace_child(nullptr);
}
replay_button = 0;
mods.erase((b == button1) ? button2 : b);
if (remap_from)
sticky_mods.reset();
remap_from = 0;
}
virtual std::string name() { return "Advanced"; }
virtual Grabber::State grab_mode() { return Grabber::NONE; }
};
static void get_timeouts(TimeoutType type, int *init, int *final) {
switch (type) {
case TimeoutOff:
*init = 0;
*final = 0;
break;
case TimeoutConservative:
*init = 750;
*final = 750;
break;
case TimeoutDefault:
*init = 250;
*final = 250;
break;
case TimeoutMedium:
*init = 100;
*final = 100;
break;
case TimeoutAggressive:
*init = 50;
*final = 75;
break;
case TimeoutFlick:
*init = 30;
*final = 50;
break;
default:;
}
}
class StrokeHandler : public Handler, public sigc::trackable {
guint button;
guint trigger;
RPreStroke cur;
bool is_gesture;
bool drawing;
RTriple last, orig;
bool use_timeout;
int init_timeout, final_timeout, radius;
struct Connection {
sigc::connection c;
double dist;
Connection(StrokeHandler *parent, double dist_, int to) : dist(dist_) {
c = Glib::signal_timeout().connect(sigc::mem_fun(*parent, &StrokeHandler::timeout), to);
}
~Connection() { c.disconnect(); }
};
typedef boost::shared_ptr<Connection> RConnection;
sigc::connection init_connection;
std::vector<RConnection> connections;
RStroke finish(guint b) {
trace->end();
XFlush(dpy);
RPreStroke c = cur;
if (!is_gesture || grabber->is_instant(button))
c.reset(new PreStroke);
return Stroke::create(*c, trigger, b, xstate->modifiers, false);
}
bool timeout() {
g_debug("Aborting stroke...");
trace->end();
RPreStroke c = cur;
if (!is_gesture)
c.reset(new PreStroke);
RStroke s;
if (prefs.timeout_gestures.get() || grabber->is_click_hold(button))
s = Stroke::create(*c, trigger, 0, xstate->modifiers, true);
parent->replace_child(AdvancedHandler::create(s, last, button, 0, cur));
XFlush(dpy);
return false;
}
void do_instant() {
PreStroke ps;
RStroke s = Stroke::create(ps, trigger, button, xstate->modifiers, false);
parent->replace_child(AdvancedHandler::create(s, orig, button, button, cur));
}
bool expired(RConnection c, double dist) {
c->dist -= dist;
return c->dist < 0;
}
protected:
void abort_stroke() {
parent->replace_child(AdvancedHandler::create(RStroke(), last, button, 0, cur));
}
virtual void motion(RTriple e) {
cur->add(e);
float dist = hypot(e->x-orig->x, e->y-orig->y);
if (!is_gesture && dist > 16) {
if (use_timeout && !final_timeout)
return abort_stroke();
init_connection.disconnect();
is_gesture = true;
}
if (!drawing && dist > 4 && (!use_timeout || final_timeout)) {
drawing = true;
bool first = true;
for (PreStroke::iterator i = cur->begin(); i != cur->end(); i++) {
Trace::Point p;
p.x = (*i)->x;
p.y = (*i)->y;
if (first) {
trace->start(p);
first = false;
} else {
trace->draw(p);
}
}
} else if (drawing) {
Trace::Point p;
p.x = e->x;
p.y = e->y;
trace->draw(p);
}
if (use_timeout && is_gesture) {
connections.erase(remove_if(connections.begin(), connections.end(),
sigc::bind(sigc::mem_fun(*this, &StrokeHandler::expired),
hypot(e->x - last->x, e->y - last->y))), connections.end());
connections.push_back(RConnection(new Connection(this, radius, final_timeout)));
}
last = e;
}
virtual void press(guint b, RTriple e) {
RStroke s = finish(b);
parent->replace_child(AdvancedHandler::create(s, e, button, b, cur));
}
virtual void release(guint b, RTriple e) {
RStroke s = finish(0);
if (prefs.move_back.get() && !xstate->current_dev->absolute)
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), orig->x, orig->y, 0);
else
XTestFakeMotionEvent(dpy, DefaultScreen(dpy), e->x, e->y, 0);
if (stroke_action) {
(*stroke_action)(s);
return parent->replace_child(nullptr);
}
RRanking ranking;
RAction act = actions.get_action_list(grabber->current_class->get())->handle(s, ranking);
if (!IS_CLICK(act))
Ranking::queue_show(ranking, e);
if (!act) {
XkbBell(dpy, None, 0, None);
return parent->replace_child(nullptr);
}
RModifiers mods = act->prepare();
if (IS_CLICK(act))
act = Button::create((Gdk::ModifierType)0, b);
else IF_BUTTON(act, b)
return parent->replace_child(new ButtonHandler(mods, b));
if (IS_IGNORE(act))
return parent->replace_child(new IgnoreHandler(mods));
if (IS_SCROLL(act))
return parent->replace_child(new ScrollHandler(mods));
char buf[16];
snprintf(buf, sizeof(buf), "%d", (int)orig->x);
setenv("EASYSTROKE_X1", buf, 1);
snprintf(buf, sizeof(buf), "%d", (int)orig->y);
setenv("EASYSTROKE_Y1", buf, 1);
snprintf(buf, sizeof(buf), "%d", (int)e->x);
setenv("EASYSTROKE_X2", buf, 1);
snprintf(buf, sizeof(buf), "%d", (int)e->y);