131f9d9b19
Proposed fixes for the wxWindows joystick code under MSW. Some of these would be valid for other platforms, too. Events for buttons are named wrong, docs say different. Docs say EVT_JOY_BUTTON_DOWN and EVT_JOY_BUTTON_UP, but the code says EVT_JOY_DOWN and EVT_JOY_UP. I suggest changing the code to match the docs. wxJoystick::GetNumberJoysticks() should be a static member function. Having to create a joystick object to see if there are joysticks is silly. Docs for GetNumberJoysticks() must be changed; it returns the number of potentially connected joysticks, not the number of actually connected. Alternatively, GetNumberJoysticks() and others must be rewritten to conform with documentation, including remapping of wxWindows sequential joystick ID's to match MSW non-sequential joystick ID's. dwSize is not set when joyGetPosEx() is called. SEVERE ERROR. Error return value from functions should not be a legal return, for instance, wxJoystick::GetPOVCTSPosition() returns 0 for error, but this is a legal return value. GetButtonState() supports only four (out of 32) buttons. Also, should return as bitmap (LSB = button 1). (Win32 does this, although not documented as such). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16630 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
369 lines
6.9 KiB
C++
369 lines
6.9 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: joystick.cpp
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// Purpose: wxJoystick class
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// Author: Ported to Linux by Guilhem Lavaux
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// Modified by:
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// Created: 05/23/98
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// RCS-ID: $Id$
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// Copyright: (c) Guilhem Lavaux
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "joystick.h"
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#endif
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#include "wx/defs.h"
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#if wxUSE_JOYSTICK
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#include "wx/joystick.h"
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#include <linux/joystick.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "wx/event.h"
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#include "wx/window.h"
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#define JOYSTICK_AXE_MAX 32767
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#define JOYSTICK_AXE_MIN -32767
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IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject)
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wxJoystick::wxJoystick(int joystick)
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{
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wxString dev_name;
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// Assume it's the same device name on all Linux systems ...
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dev_name.Printf( wxT("/dev/js%d"), (joystick == wxJOYSTICK1) ? 0 : 1); // FIXME Unicode?
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m_joystick = open(dev_name.fn_str(), O_RDWR);
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m_lastposition = wxPoint(-1, -1);
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for (int i=0;i<15;i++)
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m_axe[i] = 0;
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if (m_joystick != -1)
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Create();
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}
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////////////////////////////////////////////////////////////////////////////
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// Background thread
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////////////////////////////////////////////////////////////////////////////
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void *wxJoystick::Entry(void)
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{
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struct js_event j_evt;
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wxJoystickEvent jwx_event;
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fd_set read_fds;
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struct timeval time_out = {0, 0};
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FD_ZERO(&read_fds);
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while (1) {
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TestDestroy();
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if (m_polling) {
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FD_SET(m_joystick, &read_fds);
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select(m_joystick+1, &read_fds, NULL, NULL, &time_out);
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if (FD_ISSET(m_joystick, &read_fds))
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read(m_joystick, &j_evt, sizeof(j_evt));
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else
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j_evt.type = 0;
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} else {
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read(m_joystick, &j_evt, sizeof(j_evt));
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}
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if ((j_evt.type & JS_EVENT_AXIS) == JS_EVENT_AXIS) {
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switch (j_evt.number) {
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case 1:
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m_lastposition.x = j_evt.value;
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jwx_event.SetEventType(wxEVT_JOY_MOVE);
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break;
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case 2:
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m_lastposition.y = j_evt.value;
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jwx_event.SetEventType(wxEVT_JOY_MOVE);
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break;
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case 3:
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m_axe[3] = j_evt.value;
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jwx_event.SetEventType(wxEVT_JOY_ZMOVE);
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break;
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default:
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m_axe[j_evt.number] = j_evt.value;
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jwx_event.SetEventType(wxEVT_JOY_MOVE);
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break;
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}
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jwx_event.SetPosition(m_lastposition);
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jwx_event.SetZPosition(m_axe[3]);
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}
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if ((j_evt.type & JS_EVENT_BUTTON) == JS_EVENT_BUTTON) {
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register int mask = 1 << j_evt.number;
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char button = m_buttons & mask;
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m_buttons &= ~mask;
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if (button) {
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jwx_event.SetEventType(wxEVT_JOY_BUTTON_UP);
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} else {
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jwx_event.SetEventType(wxEVT_JOY_BUTTON_DOWN);
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m_buttons |= mask;
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}
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jwx_event.SetButtonState(m_buttons);
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jwx_event.SetButtonChange(j_evt.number);
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}
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}
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if (m_catchwin)
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m_catchwin->ProcessEvent(jwx_event);
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if (m_polling)
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usleep(m_polling*1000);
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}
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////////////////////////////////////////////////////////////////////////////
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// State
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////////////////////////////////////////////////////////////////////////////
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wxPoint wxJoystick::GetPosition(void) const
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{
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return m_lastposition;
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}
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int wxJoystick::GetZPosition(void) const
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{
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return m_axe[3];
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}
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int wxJoystick::GetButtonState(void) const
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{
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return m_buttons;
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}
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int wxJoystick::GetPOVPosition(void) const
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{
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return -1;
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}
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int wxJoystick::GetPOVCTSPosition(void) const
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{
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return -1;
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}
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int wxJoystick::GetRudderPosition(void) const
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{
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return m_axe[4];
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}
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int wxJoystick::GetUPosition(void) const
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{
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return m_axe[5];
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}
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int wxJoystick::GetVPosition(void) const
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{
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return m_axe[6];
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}
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int wxJoystick::GetMovementThreshold(void) const
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{
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return 0;
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}
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void wxJoystick::SetMovementThreshold(int threshold)
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{
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}
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////////////////////////////////////////////////////////////////////////////
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// Capabilities
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////////////////////////////////////////////////////////////////////////////
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bool wxJoystick::IsOk(void) const
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{
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return (m_joystick != -1);
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}
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int wxJoystick::GetNumberJoysticks(void) const
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{
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wxString dev_name;
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int fd, j;
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for (j=0;j<2;j++) {
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dev_name.Printf(wxT("/dev/js%d"), j);
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fd = open(dev_name.fn_str(), O_RDONLY);
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if (fd == -1)
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return j;
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close(fd);
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}
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return j;
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}
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int wxJoystick::GetManufacturerId(void) const
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{
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return 0;
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}
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int wxJoystick::GetProductId(void) const
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{
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return 0;
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}
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wxString wxJoystick::GetProductName(void) const
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{
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wxString dev_name;
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// 2002-08-20 johan@linkdata.se
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// Return the device name in lieu of a better one
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dev_name.Printf( wxT("/dev/js%d"), (m_joystick == wxJOYSTICK1) ? 0 : 1); // FIXME Unicode?
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return dev_name;
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}
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int wxJoystick::GetXMin(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetYMin(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetZMin(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetXMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetYMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetZMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetNumberButtons(void) const
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{
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int nb;
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ioctl(m_joystick, JSIOCGBUTTONS, &nb);
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return nb;
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}
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int wxJoystick::GetNumberAxes(void) const
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{
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int nb;
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ioctl(m_joystick, JSIOCGAXES, &nb);
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return nb;
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}
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int wxJoystick::GetMaxButtons(void) const
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{
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return 15; // internal
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}
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int wxJoystick::GetMaxAxes(void) const
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{
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return 15; // internal
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}
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int wxJoystick::GetPollingMin(void) const
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{
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return -1;
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}
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int wxJoystick::GetPollingMax(void) const
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{
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return -1;
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}
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int wxJoystick::GetRudderMin(void) const
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{
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return JOYSTICK_AXE_MIN;
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}
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int wxJoystick::GetRudderMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetUMin(void) const
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{
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return JOYSTICK_AXE_MIN;
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}
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int wxJoystick::GetUMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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int wxJoystick::GetVMin(void) const
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{
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return JOYSTICK_AXE_MIN;
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}
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int wxJoystick::GetVMax(void) const
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{
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return JOYSTICK_AXE_MAX;
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}
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bool wxJoystick::HasRudder(void) const
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{
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return GetNumberAxes() >= 4;
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}
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bool wxJoystick::HasZ(void) const
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{
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return GetNumberAxes() >= 3;
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}
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bool wxJoystick::HasU(void) const
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{
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return GetNumberAxes() >= 5;
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}
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bool wxJoystick::HasV(void) const
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{
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return GetNumberAxes() >= 6;
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}
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bool wxJoystick::HasPOV(void) const
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{
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return FALSE;
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}
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bool wxJoystick::HasPOV4Dir(void) const
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{
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return FALSE;
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}
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bool wxJoystick::HasPOVCTS(void) const
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{
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return FALSE;
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}
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////////////////////////////////////////////////////////////////////////////
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// Operations
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////////////////////////////////////////////////////////////////////////////
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bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq)
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{
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m_catchwin = win;
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m_polling = pollingFreq;
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return TRUE;
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}
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bool wxJoystick::ReleaseCapture(void)
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{
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m_catchwin = NULL;
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m_polling = 0;
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return TRUE;
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}
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#endif // wxUSE_JOYSTICK
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