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buttonNode.cxx
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114 lines (100 loc) · 2.73 KB
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/**
* 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."
*
* @file buttonNode.cxx
* @author drose
* @date 2002-03-12
*/
#include "buttonNode.h"
#include "config_device.h"
#include "dataNodeTransmit.h"
#include "buttonEventList.h"
#include "dcast.h"
TypeHandle ButtonNode::_type_handle;
/**
*
*/
ButtonNode::
ButtonNode(ClientBase *client, const std::string &device_name) :
DataNode(device_name)
{
_button_events_output = define_output("button_events", ButtonEventList::get_class_type());
nassertv(client != nullptr);
PT(ClientDevice) device =
client->get_device(ClientButtonDevice::get_class_type(), device_name);
if (device == nullptr) {
device_cat.warning()
<< "Unable to open button device " << device_name << "\n";
return;
}
if (!device->is_of_type(ClientButtonDevice::get_class_type())) {
device_cat.error()
<< "Inappropriate device type " << device->get_type()
<< " created; expected a ClientButtonDevice.\n";
return;
}
_device = device;
}
/**
*
*/
ButtonNode::
ButtonNode(InputDevice *device) :
DataNode(device->get_name()),
_device(device)
{
_button_events_output = define_output("button_events", ButtonEventList::get_class_type());
_device = device;
}
/**
*
*/
ButtonNode::
~ButtonNode() {
// When the _button pointer destructs, the ClientButtonDevice disconnects
// itself from the ClientBase, and everything that needs to get turned off
// does. Magic.
}
/**
*
*/
void ButtonNode::
output(std::ostream &out) const {
DataNode::output(out);
if (_device != nullptr) {
out << " (";
_device->output_buttons(out);
out << ")";
}
}
/**
*
*/
void ButtonNode::
write(std::ostream &out, int indent_level) const {
DataNode::write(out, indent_level);
if (_device != nullptr) {
_device->write_buttons(out, indent_level + 2);
}
}
/**
* 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 ButtonNode::
do_transmit_data(DataGraphTraverser *, const DataNodeTransmit &,
DataNodeTransmit &output) {
if (is_valid()) {
PT(ButtonEventList) bel = _device->get_button_events();
output.set_data(_button_events_output, EventParameter(bel));
}
}