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open_toontown_panda3d/panda/src/tform/mouseWatcher.cxx

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// Filename: mouseWatcher.cxx
// Created by: drose (12Mar02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
#include "mouseWatcher.h"
#include "config_tform.h"
#include "dataGraphTraverser.h"
#include "mouseWatcherParameter.h"
#include "mouseAndKeyboard.h"
#include "mouseData.h"
#include "buttonEventList.h"
#include "mouseButton.h"
#include "throw_event.h"
#include "eventParameter.h"
#include "dataNodeTransmit.h"
#include "transformState.h"
#include "displayRegion.h"
#include "stereoDisplayRegion.h"
#include "geomVertexWriter.h"
#include "geomLinestrips.h"
#include "geomPoints.h"
#include "dcast.h"
#include "indent.h"
#include "lightMutexHolder.h"
#include "nearly_zero.h"
#include <algorithm>
TypeHandle MouseWatcher::_type_handle;
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::Constructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
MouseWatcher::
MouseWatcher(const string &name) :
DataNode(name)
{
_pixel_xy_input = define_input("pixel_xy", EventStoreVec2::get_class_type());
_pixel_size_input = define_input("pixel_size", EventStoreVec2::get_class_type());
_xy_input = define_input("xy", EventStoreVec2::get_class_type());
_button_events_input = define_input("button_events", ButtonEventList::get_class_type());
_pointer_events_input = define_input("pointer_events", PointerEventList::get_class_type());
_pixel_xy_output = define_output("pixel_xy", EventStoreVec2::get_class_type());
_pixel_size_output = define_output("pixel_size", EventStoreVec2::get_class_type());
_xy_output = define_output("xy", EventStoreVec2::get_class_type());
_button_events_output = define_output("button_events", ButtonEventList::get_class_type());
_pixel_xy = new EventStoreVec2(LPoint2(0.0f, 0.0f));
_xy = new EventStoreVec2(LPoint2(0.0f, 0.0f));
_pixel_size = new EventStoreVec2(LPoint2(0.0f, 0.0f));
_button_events = new ButtonEventList;
_has_mouse = false;
_internal_suppress = 0;
_preferred_region = (MouseWatcherRegion *)NULL;
_preferred_button_down_region = (MouseWatcherRegion *)NULL;
_button_down = false;
_eh = (EventHandler *)NULL;
_display_region = (DisplayRegion *)NULL;
_frame.set(-1.0f, 1.0f, -1.0f, 1.0f);
_inactivity_timeout = inactivity_timeout;
_has_inactivity_timeout = !IS_NEARLY_ZERO(_inactivity_timeout);
_num_trail_recent = 0;
_trail_log_duration = 0.0;
_trail_log = new PointerEventList();
_inactivity_timeout_event = "inactivity_timeout";
_last_activity = 0.0;
_inactivity_state = IS_active;
// When this flag is true, the mouse pointer is allowed to be
// "entered" into multiple regions simultaneously; when false, it
// will only be "within" multiple regions, but "entered" into the
// topmost of those.
_enter_multiple = false;
// When this flag is true, moving the pointer into a region is
// enough to click it. The click is simulated with mouse button
// one.
_implicit_click = false;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::Destructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
MouseWatcher::
~MouseWatcher() {
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::remove_region
// Access: Published
// Description: Removes the indicated region from the group.
// Returns true if it was successfully removed, or false
// if it wasn't there in the first place.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
remove_region(MouseWatcherRegion *region) {
LightMutexHolder holder(_lock);
remove_region_from(_current_regions, region);
if (region == _preferred_region) {
if (_preferred_region != (MouseWatcherRegion *)NULL) {
exit_region(_preferred_region, MouseWatcherParameter());
}
_preferred_region = (MouseWatcherRegion *)NULL;
}
if (region == _preferred_button_down_region) {
_preferred_button_down_region = (MouseWatcherRegion *)NULL;
}
return MouseWatcherGroup::do_remove_region(region);
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_over_region
// Access: Published
// Description: Returns the preferred region the mouse is over. In
// the case of overlapping regions, the region with the
// largest sort order is preferred; if two regions have
// the same sort order, then the smaller region is
// preferred.
////////////////////////////////////////////////////////////////////
MouseWatcherRegion *MouseWatcher::
get_over_region(const LPoint2 &pos) const {
LightMutexHolder holder(_lock);
Regions regions;
get_over_regions(regions, pos);
return get_preferred_region(regions);
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::add_group
// Access: Published
// Description: Adds the indicated group of regions to the set of
// regions the MouseWatcher will monitor each frame.
//
// Since the MouseWatcher itself inherits from
// MouseWatcherGroup, this operation is normally not
// necessary--you can simply add the Regions you care
// about one at a time. Adding a complete group is
// useful when you may want to explicitly remove the
// regions as a group later.
//
// Returns true if the group was successfully added, or
// false if it was already on the list.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
add_group(MouseWatcherGroup *group) {
LightMutexHolder holder(_lock);
// See if the group is in the set/vector already
PT(MouseWatcherGroup) pt = group;
Groups::const_iterator gi =
find(_groups.begin(), _groups.end(), pt);
if (gi != _groups.end()) {
// Already in the set, return false
return false;
}
#ifndef NDEBUG
if (!_show_regions_render2d.is_empty()) {
group->show_regions(_show_regions_render2d, _show_regions_bin_name,
_show_regions_draw_order);
}
#endif // NDEBUG
// Not in the set, add it and return true
_groups.push_back(pt);
return true;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::remove_group
// Access: Published
// Description: Removes the indicated group from the set of extra
// groups associated with the MouseWatcher. Returns
// true if successful, or false if the group was already
// removed or was never added via add_group().
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
remove_group(MouseWatcherGroup *group) {
LightMutexHolder holder(_lock);
LightMutexHolder holder2(group->_lock);
group->do_sort_regions();
Regions only_a, only_b, both;
intersect_regions(only_a, only_b, both,
_current_regions, group->_regions);
set_current_regions(only_a);
if (has_region_in(both, _preferred_region)) {
if (_preferred_region != (MouseWatcherRegion *)NULL) {
exit_region(_preferred_region, MouseWatcherParameter());
}
_preferred_region = (MouseWatcherRegion *)NULL;
}
if (has_region_in(both, _preferred_button_down_region)) {
_preferred_button_down_region = (MouseWatcherRegion *)NULL;
}
#ifndef NDEBUG
if (!_show_regions_render2d.is_empty()) {
group->do_hide_regions();
}
#endif // NDEBUG
// See if the group is in the set/vector
PT(MouseWatcherGroup) pt = group;
Groups::iterator gi =
find(_groups.begin(), _groups.end(), pt);
if (gi != _groups.end()) {
// Found it, now erase it
_groups.erase(gi);
return true;
}
// Did not find the group to erase
return false;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::replace_group
// Access: Published
// Description: Atomically removes old_group from the MouseWatcher,
// and replaces it with new_group. Presumably old_group
// and new_group might have some regions in common;
// these are handled properly.
//
// If old_group is not already present, simply adds
// new_group and returns false. Otherwise, removes
// old_group and adds new_group, and then returns true.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
replace_group(MouseWatcherGroup *old_group, MouseWatcherGroup *new_group) {
if (old_group == new_group) {
// Trivial.
return true;
}
LightMutexHolder holder(_lock);
LightMutexHolder holder2(old_group->_lock);
LightMutexHolder holder3(new_group->_lock);
old_group->do_sort_regions();
new_group->do_sort_regions();
#ifndef NDEBUG
if (!_show_regions_render2d.is_empty()) {
old_group->do_hide_regions();
new_group->do_show_regions(_show_regions_render2d, _show_regions_bin_name,
_show_regions_draw_order);
}
#endif // NDEBUG
// Figure out the list of regions that change
Regions remove, add, keep;
intersect_regions(remove, add, keep,
old_group->_regions, new_group->_regions);
Regions new_current_regions;
bool any_new_current_regions = false;
// Remove the old regions
if (!remove.empty()) {
Regions only_a, only_b, both;
intersect_regions(only_a, only_b, both,
_current_regions, remove);
new_current_regions.swap(only_a);
any_new_current_regions = true;
if (has_region_in(both, _preferred_region)) {
if (_preferred_region != (MouseWatcherRegion *)NULL) {
exit_region(_preferred_region, MouseWatcherParameter());
}
_preferred_region = (MouseWatcherRegion *)NULL;
}
if (has_region_in(both, _preferred_button_down_region)) {
_preferred_button_down_region = (MouseWatcherRegion *)NULL;
}
}
// Don't add the new regions--we have no reason to believe these
// should become current; some of them may not even be under the
// mouse.
/*
// And add the new regions
if (!add.empty()) {
Regions new_list;
if (any_new_current_regions) {
intersect_regions(new_list, new_list, new_list,
new_current_regions, add);
} else {
intersect_regions(new_list, new_list, new_list,
_current_regions, add);
}
new_current_regions.swap(new_list);
any_new_current_regions = true;
}
*/
if (any_new_current_regions) {
set_current_regions(new_current_regions);
}
// Add the new group, if it's not already there.
PT(MouseWatcherGroup) pt = new_group;
Groups::iterator gi =
find(_groups.begin(), _groups.end(), pt);
if (gi == _groups.end()) {
_groups.push_back(new_group);
}
#ifndef NDEBUG
if (!_show_regions_render2d.is_empty()) {
new_group->do_update_regions();
}
#endif // NDEBUG
// Remove the old group, if it is already there.
pt = old_group;
gi = find(_groups.begin(), _groups.end(), pt);
if (gi != _groups.end()) {
// Found it, now erase it
_groups.erase(gi);
return true;
}
// Did not find the group to erase
return false;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_num_groups
// Access: Published
// Description: Returns the number of separate groups added to the
// MouseWatcher via add_group().
////////////////////////////////////////////////////////////////////
int MouseWatcher::
get_num_groups() const {
LightMutexHolder holder(_lock);
return _groups.size();
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_group
// Access: Published
// Description: Returns the nth group added to the MouseWatcher via
// add_group().
////////////////////////////////////////////////////////////////////
MouseWatcherGroup *MouseWatcher::
get_group(int n) const {
LightMutexHolder holder(_lock);
nassertr(n >= 0 && n < (int)_groups.size(), NULL);
return _groups[n];
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::set_trail_log_duration
// Access: Published
// Description: If the duration is nonzero, causes the MouseWatcher
// to log the mouse's trail. Events older than the
// specified duration are discarded. If the duration is
// zero, logging is disabled.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
set_trail_log_duration(double duration) {
if (duration < 0.0) {
duration = 0.0;
}
_trail_log_duration = duration;
discard_excess_trail_log();
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::discard_excess_trail_log
// Access: Private
// Description: Discards trail log events whose age exceed the
// desired log duration. Keeps one event that is beyond
// the specified age, because otherwise, it is not always
// possible to determine where the mouse was for the
// full logging duration. Also, keeps a minimum of two
// events in the queue. If the duration is zero, this
// method discards all trail events.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
discard_excess_trail_log() {
if (_trail_log_duration == 0.0) {
_trail_log->clear();
} else {
if (_trail_log->get_num_events() > 2) {
double old = ClockObject::get_global_clock()->get_frame_time() - _trail_log_duration;
while ((_trail_log->get_num_events() > 2)&&
(_trail_log->get_time(0) <= old)&&
(_trail_log->get_time(1) <= old)) {
_trail_log->pop_front();
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_trail_node
// Access: Published
// Description: Returns a GeomNode that represents the mouse trail.
// The intent is that you should reparent this GeomNode
// to Render2D, and then forget about it. The
// MouseWatcher will continually update the trail node.
// There is only one trail node, it does not create a
// new one each time you call get_trail_node.
//
// This is not a particularly beautiful way to render
// a mouse trail. It is intended more for debugging
// purposes than for finished applications. Even so,
// It is suggested that you might want to apply a line
// thickness and antialias mode to the line --- doing
// so makes it look a lot better.
////////////////////////////////////////////////////////////////////
PT(GeomNode) MouseWatcher::
get_trail_node() {
if (_trail_node == 0) {
_trail_node = new GeomNode("Mouse Trail Node");
update_trail_node();
}
return _trail_node;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::clear_trail_node
// Access: Published
// Description: If you have previously fetched the trail node
// using get_trail_node, then the MouseWatcher is
// continually updating the trail node every frame.
// Using clear_trail_node causes the MouseWatcher to
// forget the trail node and stop updating it.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
clear_trail_node() {
_trail_node = 0;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::update_trail_node
// Access: Private
// Description: Causes the trail node to represent the mouse trail.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
update_trail_node() {
if (_trail_node == 0) {
return;
}
_trail_node->remove_all_geoms();
if (_trail_log->get_num_events() < 2) {
return;
}
PT(GeomVertexData) data = new GeomVertexData
("mouseTrailSegs", GeomVertexFormat::get_v3(), Geom::UH_static);
GeomVertexWriter vertex(data, InternalName::get_vertex());
PT(GeomLinestrips) lines = new GeomLinestrips(Geom::UH_static);
double xscale = 2.0 / _pixel_size->get_value().get_x();
double yscale = 2.0 / _pixel_size->get_value().get_y();
for (int i=0; i<(int)_trail_log->get_num_events(); i++) {
double x = (_trail_log->get_xpos(i) * xscale) - 1.0;
double y = (_trail_log->get_ypos(i) * yscale) - 1.0;
vertex.add_data3(LVecBase3(x,0.0,-y));
lines->add_vertex(i);
}
lines->close_primitive();
PT(Geom) l_geom = new Geom(data);
l_geom->add_primitive(lines);
_trail_node->add_geom(l_geom);
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::note_activity
// Access: Published
// Description: Can be used in conjunction with the inactivity
// timeout to inform the MouseWatcher that the user has
// just performed some action which proves he/she is
// present. It may be necessary to call this for
// external events, such as joystick action, that the
// MouseWatcher might otherwise not know about. This
// will reset the current inactivity timer. When the
// inactivity timer reaches the length of time specified
// by set_inactivity_timeout(), with no keyboard or
// mouse activity and no calls to note_activity(), then
// any buttons held will be automatically released.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
note_activity() {
_last_activity = ClockObject::get_global_clock()->get_frame_time();
switch (_inactivity_state) {
case IS_active:
break;
case IS_inactive:
_inactivity_state = IS_inactive_to_active;
break;
case IS_active_to_inactive:
_inactivity_state = IS_active;
break;
case IS_inactive_to_active:
break;
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::output
// Access: Public, Virtual
// Description:
////////////////////////////////////////////////////////////////////
void MouseWatcher::
output(ostream &out) const {
LightMutexHolder holder(_lock);
DataNode::output(out);
int count = _regions.size();
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
count += group->_regions.size();
}
out << " (" << count << " regions)";
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::write
// Access: Public, Virtual
// Description:
////////////////////////////////////////////////////////////////////
void MouseWatcher::
write(ostream &out, int indent_level) const {
indent(out, indent_level)
<< "MouseWatcher " << get_name() << ":\n";
MouseWatcherGroup::write(out, indent_level + 2);
LightMutexHolder holder(_lock);
if (!_groups.empty()) {
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
indent(out, indent_level + 2)
<< "Subgroup:\n";
group->write(out, indent_level + 4);
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_over_regions
// Access: Protected
// Description: Fills up the "regions" list with the set of regions
// that the indicated point is over, sorted in order by
// pointer. Assumes the lock is held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
get_over_regions(MouseWatcher::Regions &regions, const LPoint2 &pos) const {
nassertv(_lock.debug_is_locked());
// Scale the mouse coordinates into the frame.
PN_stdfloat mx = (pos[0] + 1.0f) * 0.5f * (_frame[1] - _frame[0]) + _frame[0];
PN_stdfloat my = (pos[1] + 1.0f) * 0.5f * (_frame[3] - _frame[2]) + _frame[2];
// pos[0] = 2.0f * (mx - _frame[0]) / (_frame[1] - _frame[0]) - 1.0f;
// pos[1] = 2.0f * (my - _frame[2]) / (_frame[3] - _frame[2]) - 1.0f;
// Ensure the vector is empty before we begin.
regions.clear();
Regions::const_iterator ri;
for (ri = _regions.begin(); ri != _regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
const LVecBase4 &frame = region->get_frame();
if (region->get_active() &&
mx >= frame[0] && mx <= frame[1] &&
my >= frame[2] && my <= frame[3]) {
regions.push_back(region);
}
}
// Also check all of our sub-groups.
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
for (ri = group->_regions.begin(); ri != group->_regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
const LVecBase4 &frame = region->get_frame();
if (region->get_active() &&
mx >= frame[0] && mx <= frame[1] &&
my >= frame[2] && my <= frame[3]) {
regions.push_back(region);
}
}
}
// Now sort the regions by pointer. By convention, the Regions
// vectors are always kept in order by pointer, so we can do easy
// linear comparison and intersection operations.
sort(regions.begin(), regions.end());
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::get_preferred_region
// Access: Protected, Static
// Description: Returns the innermost region of all the regions
// indicated in the given vector (usually, the regions
// the mouse is over). This is the "preferred" region
// that gets some special treatment. Assumes the lock
// is already held.
////////////////////////////////////////////////////////////////////
MouseWatcherRegion *MouseWatcher::
get_preferred_region(const MouseWatcher::Regions &regions) {
if (regions.empty()) {
return (MouseWatcherRegion *)NULL;
}
Regions::const_iterator ri;
ri = regions.begin();
MouseWatcherRegion *preferred = *ri;
++ri;
while (ri != regions.end()) {
MouseWatcherRegion *region = *ri;
if (*region < *preferred) {
preferred = region;
}
++ri;
}
return preferred;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::set_current_regions
// Access: Protected
// Description: Changes the "current" regions--the one we consider the
// mouse to be over--to the indicated list, and throws
// whatever events are appropriate because of that.
//
// The list passed in is destroyed. Assumes the lock is
// already held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
set_current_regions(MouseWatcher::Regions &regions) {
nassertv(_lock.debug_is_locked());
// Set up a parameter for passing through any change events.
MouseWatcherParameter param;
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
// Now do a standard sorted comparison between the two vectors.
Regions::const_iterator new_ri = regions.begin();
Regions::const_iterator old_ri = _current_regions.begin();
// Queue up all the new regions so we can send the within patterns
// all at once, after all of the without patterns have been thrown.
vector<MouseWatcherRegion *> new_regions;
bool any_changes = false;
while (new_ri != regions.end() && old_ri != _current_regions.end()) {
if ((*new_ri) < (*old_ri)) {
// Here's a new region that we didn't have last frame.
MouseWatcherRegion *new_region = (*new_ri);
new_regions.push_back(new_region);
any_changes = true;
++new_ri;
} else if ((*old_ri) < (*new_ri)) {
// Here's a region we don't have any more.
MouseWatcherRegion *old_region = (*old_ri);
without_region(old_region, param);
any_changes = true;
++old_ri;
} else {
// Here's a region that hasn't changed.
++new_ri;
++old_ri;
}
}
while (new_ri != regions.end()) {
// Here's a new region that we didn't have last frame.
MouseWatcherRegion *new_region = (*new_ri);
new_regions.push_back(new_region);
any_changes = true;
++new_ri;
}
while (old_ri != _current_regions.end()) {
// Here's a region we don't have any more.
MouseWatcherRegion *old_region = (*old_ri);
without_region(old_region, param);
any_changes = true;
++old_ri;
}
if (any_changes) {
// Now that we've compared the two vectors, simply swap them to set
// the new vector.
_current_regions.swap(regions);
// And don't forget to throw all of the new regions' "within" events.
vector<MouseWatcherRegion *>::const_iterator ri;
for (ri = new_regions.begin(); ri != new_regions.end(); ++ri) {
MouseWatcherRegion *new_region = (*ri);
within_region(new_region, param);
}
}
if (!_enter_multiple) {
// Determine which is the "preferred region", if any. This is the
// topmost region that the mouse cursor is over, and the one that
// we are considered "entered" into.
MouseWatcherRegion *new_preferred_region =
get_preferred_region(_current_regions);
if (_button_down && new_preferred_region != _preferred_button_down_region) {
// If the button's being held down, we're only allowed to select
// the preferred button down region.
new_preferred_region = (MouseWatcherRegion *)NULL;
}
if (new_preferred_region != _preferred_region) {
if (_preferred_region != (MouseWatcherRegion *)NULL) {
exit_region(_preferred_region, param);
}
_preferred_region = new_preferred_region;
if (_preferred_region != (MouseWatcherRegion *)NULL) {
enter_region(_preferred_region, param);
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::clear_current_regions
// Access: Protected
// Description: Empties the set of current regions. Assumes the lock
// is already held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
clear_current_regions() {
nassertv(_lock.debug_is_locked());
if (!_current_regions.empty()) {
// Set up a parameter for passing through any change events.
MouseWatcherParameter param;
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
Regions::const_iterator old_ri = _current_regions.begin();
while (old_ri != _current_regions.end()) {
// Here's a region we don't have any more.
MouseWatcherRegion *old_region = (*old_ri);
old_region->exit_region(param);
throw_event_pattern(_leave_pattern, old_region, ButtonHandle::none());
++old_ri;
}
_current_regions.clear();
if (_preferred_region != (MouseWatcherRegion *)NULL) {
_preferred_region->exit_region(param);
throw_event_pattern(_leave_pattern, _preferred_region, ButtonHandle::none());
_preferred_region = (MouseWatcherRegion *)NULL;
}
}
}
#ifndef NDEBUG
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::do_show_regions
// Access: Protected, Virtual
// Description: The protected implementation of show_regions(). This
// assumes the lock is already held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
do_show_regions(const NodePath &render2d, const string &bin_name,
int draw_order) {
MouseWatcherGroup::do_show_regions(render2d, bin_name, draw_order);
_show_regions_render2d = render2d;
_show_regions_bin_name = bin_name;
_show_regions_draw_order = draw_order;
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
group->show_regions(render2d, bin_name, draw_order);
}
}
#endif // NDEBUG
#ifndef NDEBUG
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::do_hide_regions
// Access: Protected, Virtual
// Description: The protected implementation of hide_regions(). This
// assumes the lock is already held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
do_hide_regions() {
MouseWatcherGroup::do_hide_regions();
_show_regions_render2d = NodePath();
_show_regions_bin_name = string();
_show_regions_draw_order = 0;
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
group->hide_regions();
}
}
#endif // NDEBUG
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::intersect_regions
// Access: Protected, Static
// Description: Computes the list of regions that are in both
// regions_a and regions_b, as well as the list of
// regions only in regions_a, and the list of regions
// only in regions_b. Any or all of the three output
// lists may be the same object, but they must be
// different objects from both of the input lists.
//
// It is assumed that both vectors are already sorted in
// pointer order. It is also assumed that any relevant
// locks are already held.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
intersect_regions(MouseWatcher::Regions &only_a,
MouseWatcher::Regions &only_b,
MouseWatcher::Regions &both,
const MouseWatcher::Regions &regions_a,
const MouseWatcher::Regions &regions_b) {
// Now do a standard sorted intersection between the two vectors.
Regions::const_iterator a_ri = regions_a.begin();
Regions::const_iterator b_ri = regions_b.begin();
while (a_ri != regions_a.end() && b_ri != regions_b.end()) {
if ((*a_ri) < (*b_ri)) {
// Here's a region in a, not in b.
only_a.push_back(*a_ri);
++a_ri;
} else if ((*b_ri) < (*a_ri)) {
// Here's a region in b, not in a.
only_b.push_back(*b_ri);
++b_ri;
} else {
// Here's a region in both vectors.
both.push_back(*a_ri);
++a_ri;
++b_ri;
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::remove_region_from
// Access: Protected, Static
// Description: Removes the indicated region from the given vector.
// Assumes the vector is sorted in pointer order.
// Returns true if removed, false if it wasn't there.
// Assumes any relevent locks are already held.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
remove_region_from(MouseWatcher::Regions &regions,
MouseWatcherRegion *region) {
PT(MouseWatcherRegion) ptr = region;
Regions::iterator ri = lower_bound(regions.begin(), regions.end(), ptr);
if (ri != regions.end() && (*ri) == ptr) {
// The region is in the vector. Remove it.
regions.erase(ri);
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::has_region_in
// Access: Protected, Static
// Description: Returns true if the indicated region is a member of
// the given sorted list, false otherwise.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
has_region_in(const MouseWatcher::Regions &regions,
MouseWatcherRegion *region) {
PT(MouseWatcherRegion) ptr = region;
Regions::const_iterator ri = lower_bound(regions.begin(), regions.end(), ptr);
return (ri != regions.end() && (*ri) == ptr);
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::throw_event_pattern
// Access: Protected
// Description: Throws an event associated with the indicated region,
// using the given pattern.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
throw_event_pattern(const string &pattern, const MouseWatcherRegion *region,
const ButtonHandle &button) {
if (pattern.empty()) {
return;
}
#ifndef NDEBUG
if (region != (MouseWatcherRegion *)NULL) {
region->test_ref_count_integrity();
}
#endif
string button_name;
if (button != ButtonHandle::none()) {
if (!_mods.has_button(button)) {
// We only prepend modifier names for buttons which are not
// themselves modifiers.
button_name = _mods.get_prefix();
}
button_name += button.get_name();
}
string event;
for (size_t p = 0; p < pattern.size(); ++p) {
if (pattern[p] == '%') {
string cmd = pattern.substr(p + 1, 1);
p++;
if (cmd == "r") {
if (region != (MouseWatcherRegion *)NULL) {
event += region->get_name();
}
} else if (cmd == "b") {
event += button.get_name();
} else {
tform_cat.error()
<< "Invalid symbol in event_pattern: %" << cmd << "\n";
}
} else {
event += pattern[p];
}
}
if (!event.empty()) {
throw_event(event, EventParameter(region), EventParameter(button_name));
if (_eh != (EventHandler*)0L)
throw_event_directly(*_eh, event, EventParameter(region),
EventParameter(button_name));
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::move
// Access: Protected
// Description: Records the indicated mouse or keyboard button as
// being moved from last position.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
move() {
nassertv(_lock.debug_is_locked());
MouseWatcherParameter param;
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
if (_preferred_button_down_region != (MouseWatcherRegion *)NULL) {
_preferred_button_down_region->move(param);
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::press
// Access: Protected
// Description: Records the indicated mouse or keyboard button as
// being depressed.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
press(ButtonHandle button, bool keyrepeat) {
nassertv(_lock.debug_is_locked());
MouseWatcherParameter param;
param.set_button(button);
param.set_keyrepeat(keyrepeat);
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
if (MouseButton::is_mouse_button(button)) {
// Mouse buttons are inextricably linked to the mouse position.
if (!_button_down) {
_preferred_button_down_region = _preferred_region;
}
_button_down = true;
if (_preferred_button_down_region != (MouseWatcherRegion *)NULL) {
_preferred_button_down_region->press(param);
if (keyrepeat) {
throw_event_pattern(_button_repeat_pattern,
_preferred_button_down_region, button);
} else {
throw_event_pattern(_button_down_pattern,
_preferred_button_down_region, button);
}
}
} else {
// It's a keyboard button; therefore, send the event to every
// region that wants keyboard buttons, regardless of the mouse
// position.
if (_preferred_region != (MouseWatcherRegion *)NULL) {
// Our current region, the one under the mouse, always get
// all the keyboard events, even if it doesn't set its
// keyboard flag.
_preferred_region->press(param);
consider_keyboard_suppress(_preferred_region);
}
if ((_internal_suppress & MouseWatcherRegion::SF_other_button) == 0) {
// All the other regions only get the keyboard events if they
// set their global keyboard flag, *and* the current region does
// not suppress keyboard buttons.
param.set_outside(true);
global_keyboard_press(param);
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::release
// Access: Protected
// Description: Records the indicated mouse or keyboard button as
// being released.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
release(ButtonHandle button) {
nassertv(_lock.debug_is_locked());
MouseWatcherParameter param;
param.set_button(button);
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
if (MouseButton::is_mouse_button(button)) {
// Button up. Send the up event associated with the region(s) we
// were over when the button went down.
// There is some danger of losing button-up events here. If
// more than one button goes down together, we won't detect
// both of the button-up events properly.
if (_preferred_button_down_region != (MouseWatcherRegion *)NULL) {
param.set_outside(_preferred_button_down_region != _preferred_region);
_preferred_button_down_region->release(param);
throw_event_pattern(_button_up_pattern,
_preferred_button_down_region, button);
}
_button_down = false;
_preferred_button_down_region = (MouseWatcherRegion *)NULL;
} else {
// It's a keyboard button; therefore, send the event to every
// region that wants keyboard buttons, regardless of the mouse
// position.
if (_preferred_region != (MouseWatcherRegion *)NULL) {
_preferred_region->release(param);
}
param.set_outside(true);
global_keyboard_release(param);
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::keystroke
// Access: Protected
// Description: Records that the indicated keystroke has been
// generated.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
keystroke(int keycode) {
nassertv(_lock.debug_is_locked());
MouseWatcherParameter param;
param.set_keycode(keycode);
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
// Keystrokes go to all those regions that want keyboard events,
// regardless of which is the "preferred" region (that is, without
// respect to the mouse position). However, we do set the outside
// flag according to whether the given region is the preferred
// region or not.
Regions::const_iterator ri;
for (ri = _regions.begin(); ri != _regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region->get_keyboard()) {
param.set_outside(region != _preferred_region);
region->keystroke(param);
consider_keyboard_suppress(region);
}
}
// Also check all of our sub-groups.
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
for (ri = group->_regions.begin(); ri != group->_regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region->get_keyboard()) {
param.set_outside(region != _preferred_region);
region->keystroke(param);
consider_keyboard_suppress(region);
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::candidate
// Access: Protected
// Description: Records that the indicated candidate string has been
// highlighted in the IME.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
candidate(const wstring &candidate_string, size_t highlight_start,
size_t highlight_end, size_t cursor_pos) {
nassertv(_lock.debug_is_locked());
MouseWatcherParameter param;
param.set_candidate(candidate_string, highlight_start, highlight_end, cursor_pos);
param.set_modifier_buttons(_mods);
param.set_mouse(_mouse);
// Candidate strings go to all those regions that want keyboard
// events, exactly like keystrokes, above.
Regions::const_iterator ri;
for (ri = _regions.begin(); ri != _regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region->get_keyboard()) {
param.set_outside(region != _preferred_region);
region->candidate(param);
}
}
// Also check all of our sub-groups.
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
for (ri = group->_regions.begin(); ri != group->_regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region->get_keyboard()) {
param.set_outside(region != _preferred_region);
region->candidate(param);
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::global_keyboard_press
// Access: Protected
// Description: Calls press() on all regions that are interested in
// receiving global keyboard events, except for the
// current region (which already received this one).
////////////////////////////////////////////////////////////////////
void MouseWatcher::
global_keyboard_press(const MouseWatcherParameter &param) {
nassertv(_lock.debug_is_locked());
Regions::const_iterator ri;
for (ri = _regions.begin(); ri != _regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region != _preferred_region && region->get_keyboard()) {
region->press(param);
consider_keyboard_suppress(region);
}
}
// Also check all of our sub-groups.
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
for (ri = group->_regions.begin(); ri != group->_regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region != _preferred_region && region->get_keyboard()) {
region->press(param);
consider_keyboard_suppress(region);
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::global_keyboard_release
// Access: Protected
// Description: Calls release() on all regions that are interested in
// receiving global keyboard events, except for the
// current region (which already received this one).
////////////////////////////////////////////////////////////////////
void MouseWatcher::
global_keyboard_release(const MouseWatcherParameter &param) {
nassertv(_lock.debug_is_locked());
Regions::const_iterator ri;
for (ri = _regions.begin(); ri != _regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region != _preferred_region && region->get_keyboard()) {
region->release(param);
}
}
// Also check all of our sub-groups.
Groups::const_iterator gi;
for (gi = _groups.begin(); gi != _groups.end(); ++gi) {
MouseWatcherGroup *group = (*gi);
for (ri = group->_regions.begin(); ri != group->_regions.end(); ++ri) {
MouseWatcherRegion *region = (*ri);
if (region != _preferred_region && region->get_keyboard()) {
region->release(param);
}
}
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::enter_region
// Access: Protected
// Description: Called internally to indicate the mouse pointer is
// favoring the indicated region.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
enter_region(MouseWatcherRegion *region, const MouseWatcherParameter &param) {
nassertv(_lock.debug_is_locked());
region->enter_region(param);
throw_event_pattern(_enter_pattern, region, ButtonHandle::none());
if (_implicit_click) {
MouseWatcherParameter param1(param);
param1.set_button(MouseButton::one());
region->press(param1);
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::exit_region
// Access: Protected
// Description: Called internally to indicate the mouse pointer is no
// longer favoring the indicated region.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
exit_region(MouseWatcherRegion *region, const MouseWatcherParameter &param) {
nassertv(_lock.debug_is_locked());
if (_implicit_click) {
MouseWatcherParameter param1(param);
param1.set_button(MouseButton::one());
region->release(param1);
}
region->exit_region(param);
throw_event_pattern(_leave_pattern, region, ButtonHandle::none());
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::set_no_mouse
// Access: Protected
// Description: Called from do_transmit_data() to indicate the mouse
// is not within the window.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
set_no_mouse() {
nassertv(_lock.debug_is_locked());
if (_has_mouse) {
// Hide the mouse pointer.
if (!_geometry.is_null()) {
_geometry->set_overall_hidden(true);
}
}
_has_mouse = false;
clear_current_regions();
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::set_mouse
// Access: Protected
// Description: Called from do_transmit_data() to indicate the mouse
// is within the window, and to specify its current
// position.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
set_mouse(const LVecBase2 &xy, const LVecBase2 &pixel_xy) {
nassertv(_lock.debug_is_locked());
if (!_geometry.is_null()) {
// Transform the mouse pointer.
_geometry->set_transform(TransformState::make_pos(LVecBase3(xy[0], 0, xy[1])));
if (!_has_mouse) {
// Show the mouse pointer.
_geometry->set_overall_hidden(false);
}
}
_has_mouse = true;
_mouse = xy;
_mouse_pixel = pixel_xy;
Regions regions;
get_over_regions(regions, _mouse);
set_current_regions(regions);
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::consider_keyboard_suppress
// Access: Private
// Description: If we send any keyboard events to a region that has
// the SF_other_button suppress flag set, that means we
// should not send the keyboard event along the data
// graph.
//
// This method is called as each keyboard event is sent
// to a region; it should update the internal
// _keyboard_suppress bitmask to indicate this.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
consider_keyboard_suppress(const MouseWatcherRegion *region) {
if ((region->get_suppress_flags() & MouseWatcherRegion::SF_other_button) != 0) {
_external_suppress |= MouseWatcherRegion::SF_other_button;
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::do_transmit_data
// Access: Protected, Virtual
// Description: The virtual implementation of transmit_data(). This
// function receives an array of input parameters and
// should generate an array of output parameters. The
// input parameters may be accessed with the index
// numbers returned by the define_input() calls that
// were made earlier (presumably in the constructor);
// likewise, the output parameters should be set with
// the index numbers returned by the define_output()
// calls.
////////////////////////////////////////////////////////////////////
void MouseWatcher::
do_transmit_data(DataGraphTraverser *trav, const DataNodeTransmit &input,
DataNodeTransmit &output) {
Thread *current_thread = trav->get_current_thread();
LightMutexHolder holder(_lock);
bool activity = false;
// Initially, we do not suppress any events to objects below us in
// the data graph.
_internal_suppress = 0;
_external_suppress = 0;
// We always pass the pixel_size data through.
EventStoreVec2 *pixel_size;
DCAST_INTO_V(pixel_size, input.get_data(_pixel_size_input).get_ptr());
output.set_data(_pixel_size_output, pixel_size);
_pixel_size = pixel_size;
if (input.has_data(_xy_input)) {
// The mouse is within the window. Get the current mouse position.
const EventStoreVec2 *xy, *pixel_xy;
DCAST_INTO_V(xy, input.get_data(_xy_input).get_ptr());
DCAST_INTO_V(pixel_xy, input.get_data(_pixel_xy_input).get_ptr());
LVecBase2 f = xy->get_value();
LVecBase2 p = pixel_xy->get_value();
// Asad: determine if mouse moved from last position
const LVecBase2 &last_f = _xy->get_value();
if (f != last_f) {
activity = true;
move();
}
if (_display_region != (DisplayRegion *)NULL) {
// If we've got a display region, constrain the mouse to it.
if (constrain_display_region(_display_region, f, p, current_thread)) {
set_mouse(f, p);
} else {
// The mouse is outside the display region, even though it's
// within the window. This is considered not having a mouse.
set_no_mouse();
// This also means we should suppress mouse button events below us.
_internal_suppress |= MouseWatcherRegion::SF_mouse_button;
}
} else {
// No display region; respect the whole window.
set_mouse(f, p);
}
}
// Code for recording the mouse trail.
_num_trail_recent = 0;
if (input.has_data(_pointer_events_input) && (_trail_log_duration > 0.0)) {
const PointerEventList *this_pointer_events;
DCAST_INTO_V(this_pointer_events, input.get_data(_pointer_events_input).get_ptr());
_num_trail_recent = this_pointer_events->get_num_events();
for (int i = 0; i < _num_trail_recent; i++) {
bool in_win = this_pointer_events->get_in_window(i);
int xpos = this_pointer_events->get_xpos(i);
int ypos = this_pointer_events->get_ypos(i);
int sequence = this_pointer_events->get_sequence(i);
double time = this_pointer_events->get_time(i);
_trail_log->add_event(in_win, xpos, ypos, sequence, time);
}
}
if (_trail_log->get_num_events() > 0) {
discard_excess_trail_log();
update_trail_node();
}
if (_num_trail_recent > _trail_log->get_num_events()) {
_num_trail_recent = _trail_log->get_num_events();
}
// If the mouse is over a particular region, or still considered
// owned by a region because of a recent button-down event, that
// region determines whether we suppress events below us.
if (_preferred_region != (MouseWatcherRegion *)NULL) {
_internal_suppress |= _preferred_region->get_suppress_flags();
}
ButtonEventList new_button_events;
// Look for new button events.
if (input.has_data(_button_events_input)) {
const ButtonEventList *this_button_events;
DCAST_INTO_V(this_button_events, input.get_data(_button_events_input).get_ptr());
int num_events = this_button_events->get_num_events();
for (int i = 0; i < num_events; i++) {
const ButtonEvent &be = this_button_events->get_event(i);
be.update_mods(_mods);
switch (be._type) {
case ButtonEvent::T_down:
if (!_current_buttons_down.get_bit(be._button.get_index())) {
// The button was not already depressed; thus, this is not
// keyrepeat.
activity = true;
_current_buttons_down.set_bit(be._button.get_index());
press(be._button, false);
new_button_events.add_event(be);
break;
}
// The button was already depressed, so this is really just
// keyrepeat. Fall through.
case ButtonEvent::T_repeat:
_current_buttons_down.set_bit(be._button.get_index());
press(be._button, true);
new_button_events.add_event(ButtonEvent(be._button, ButtonEvent::T_repeat,
be._time));
break;
case ButtonEvent::T_up:
activity = true;
_current_buttons_down.clear_bit(be._button.get_index());
release(be._button);
new_button_events.add_event(be);
break;
case ButtonEvent::T_keystroke:
// We don't consider "keystroke" an activity event, because it
// might be just keyrepeat.
keystroke(be._keycode);
new_button_events.add_event(be);
break;
case ButtonEvent::T_candidate:
activity = true;
candidate(be._candidate_string, be._highlight_start, be._highlight_end, be._cursor_pos);
new_button_events.add_event(be);
break;
case ButtonEvent::T_resume_down:
//_current_buttons_down.set_bit(be._button.get_index());
// Don't call press(), since the button wasn't actually
// pressed just now.
new_button_events.add_event(be);
break;
case ButtonEvent::T_move:
// This is handled below.
break;
}
}
}
if (!input.has_data(_xy_input)) {
// No mouse in the window. We check this down here, below the
// button checking, in case the mouse left the window in the same
// frame it released a button (particularly likely with a
// touchscreen input that's emulating a mouse).
set_no_mouse();
}
// Now check the inactivity timer.
if (_has_inactivity_timeout) {
if (activity) {
note_activity();
} else {
double now = ClockObject::get_global_clock()->get_frame_time();
double elapsed = now - _last_activity;
// Toggle the inactivity state to inactive.
if (elapsed > _inactivity_timeout) {
switch (_inactivity_state) {
case IS_active:
_inactivity_state = IS_active_to_inactive;
break;
case IS_inactive:
break;
case IS_active_to_inactive:
break;
case IS_inactive_to_active:
_inactivity_state = IS_inactive;
break;
}
}
}
}
switch (_inactivity_state) {
case IS_active:
case IS_inactive:
break;
case IS_active_to_inactive:
// "Release" all of the currently-held buttons.
if (tform_cat.is_debug()) {
tform_cat.info()
<< "MouseWatcher detected " << _inactivity_timeout
<< " seconds of inactivity; releasing held buttons.\n";
}
{
for (int i = 0; i < _current_buttons_down.get_num_bits(); ++i) {
if (_current_buttons_down.get_bit(i)) {
release(ButtonHandle(i));
new_button_events.add_event(ButtonEvent(ButtonHandle(i), ButtonEvent::T_up));
}
}
}
_inactivity_state = IS_inactive;
throw_event(_inactivity_timeout_event);
break;
case IS_inactive_to_active:
// "Press" all of the buttons we "released" before.
{
for (int i = 0; i < _current_buttons_down.get_num_bits(); ++i) {
if (_current_buttons_down.get_bit(i)) {
press(ButtonHandle(i), false);
new_button_events.add_event(ButtonEvent(ButtonHandle(i), ButtonEvent::T_down));
}
}
}
_inactivity_state = IS_active;
break;
}
if (_has_mouse &&
(_internal_suppress & MouseWatcherRegion::SF_mouse_position) == 0) {
// Transmit the mouse position.
_xy->set_value(_mouse);
output.set_data(_xy_output, EventParameter(_xy));
_pixel_xy->set_value(_mouse_pixel);
output.set_data(_pixel_xy_output, EventParameter(_pixel_xy));
}
// Now transmit the buttons events down the graph.
int suppress_buttons = ((_internal_suppress | _external_suppress) & MouseWatcherRegion::SF_any_button);
_button_events->clear();
int num_events = new_button_events.get_num_events();
for (int i = 0; i < num_events; i++) {
const ButtonEvent &be = new_button_events.get_event(i);
bool suppress = true;
if (be._type != ButtonEvent::T_keystroke &&
MouseButton::is_mouse_button(be._button)) {
suppress = ((suppress_buttons & MouseWatcherRegion::SF_mouse_button) != 0);
} else {
suppress = ((suppress_buttons & MouseWatcherRegion::SF_other_button) != 0);
}
if (!suppress || be._type == ButtonEvent::T_up) {
// Don't suppress this button event; pass it through.
_button_events->add_event(be);
}
}
if (_button_events->get_num_events() != 0) {
output.set_data(_button_events_output, EventParameter(_button_events));
}
}
////////////////////////////////////////////////////////////////////
// Function: MouseWatcher::constrain_display_region
// Access: Private, Static
// Description: Constrains the mouse coordinates to within the
// indicated DisplayRegion. If the mouse pointer does
// indeed fall within the DisplayRegion, rescales f and
// p correspondingly, and returns true. If the mouse
// pointer does not fall within the DisplayRegion,
// leaves f and p unchanged, and returns false.
////////////////////////////////////////////////////////////////////
bool MouseWatcher::
constrain_display_region(DisplayRegion *display_region,
LVecBase2 &f, LVecBase2 &p,
Thread *current_thread) {
// If it's a stereo DisplayRegion, we should actually call this
// method twice, once for each eye, in case we have side-by-side
// stereo.
if (display_region->is_stereo()) {
StereoDisplayRegion *stereo_display_region;
DCAST_INTO_R(stereo_display_region, display_region, false);
return constrain_display_region(stereo_display_region->get_left_eye(), f, p, current_thread) ||
constrain_display_region(stereo_display_region->get_right_eye(), f, p, current_thread);
}
DisplayRegionPipelineReader dr_reader(display_region, current_thread);
PN_stdfloat left, right, bottom, top;
dr_reader.get_dimensions(left, right, bottom, top);
// Need to translate this into DisplayRegion [0, 1] space
PN_stdfloat x = (f[0] + 1.0f) / 2.0f;
PN_stdfloat y = (f[1] + 1.0f) / 2.0f;
if (x < left || x >= right ||
y < bottom || y >= top) {
// The mouse is outside the display region.
return false;
}
// The mouse is within the display region; rescale it.
// Scale in DR space
PN_stdfloat xp = (x - left) / (right - left);
// Translate back into [-1, 1] space
PN_stdfloat xpp = (xp * 2.0f) - 1.0f;
PN_stdfloat yp = (y - bottom) / (top - bottom);
PN_stdfloat ypp = (yp * 2.0f) - 1.0f;
int xo, yo, w, h;
dr_reader.get_region_pixels_i(xo, yo, w, h);
f.set(xpp, ypp);
p.set(p[0] - xo, p[1] - yo);
return true;
}
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