This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_x11mouse.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#include "SDL_x11video.h"
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#include "SDL_x11mouse.h"
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#include "../../events/SDL_mouse_c.h"
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#if SDL_VIDEO_DRIVER_X11_XINPUT
static void
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X11_FreeMouse(SDL_Mouse * mouse)
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X11_MouseData *data = (X11_MouseData *) mouse->driverdata;
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XCloseDevice(data->display, data->device);
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SDL_free(data);
}
}
#endif
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void
X11_InitMouse(_THIS)
{
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SDL_Mouse mouse;
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#if SDL_VIDEO_DRIVER_X11_XINPUT
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Display *display = ((SDL_VideoData *) _this->driverdata)->display;
X11_MouseData *data;
int i, j, n;
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XDeviceInfo *DevList;
XAnyClassPtr deviceClass;
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int event_code;
XEventClass xEvent;
#endif
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int num_mice = 0;
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#if SDL_VIDEO_DRIVER_X11_XINPUT
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/* we're getting the list of input devices */
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if (SDL_X11_HAVE_XINPUT) {
DevList = XListInputDevices(display, &n);
}
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/* we're aquiring valuators: mice, tablets, etc. */
for (i = 0; i < n; ++i) {
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/* if it's the core pointer or core keyborard we don't want it */
if ((DevList[i].use != IsXPointer && DevList[i].use != IsXKeyboard)) {
/* we have to check all of the device classes */
deviceClass = DevList[i].inputclassinfo;
for (j = 0; j < DevList[i].num_classes; ++j) {
if (deviceClass->class == ValuatorClass) { /* bingo ;) */
XValuatorInfo *valInfo;
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data = (X11_MouseData *) SDL_calloc(1, sizeof(*data));
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if (!data) {
continue;
}
data->display = display;
data->device = XOpenDevice(display, DevList[i].id);
/* motion events */
DeviceMotionNotify(data->device, event_code, xEvent);
if (xEvent) {
data->xevents[data->num_xevents++] = xEvent;
data->motion = event_code;
}
/* button events */
DeviceButtonPress(data->device, event_code, xEvent);
if (xEvent) {
data->xevents[data->num_xevents++] = xEvent;
data->button_pressed = event_code;
}
DeviceButtonRelease(data->device, event_code, xEvent);
if (xEvent) {
data->xevents[data->num_xevents++] = xEvent;
data->button_released = event_code;
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/* proximity events */
ProximityIn(data->device, event_code, xEvent);
if (xEvent) {
data->xevents[data->num_xevents++] = xEvent;
data->proximity_in = event_code;
}
ProximityOut(data->device, event_code, xEvent);
if (xEvent) {
data->xevents[data->num_xevents++] = xEvent;
data->proximity_out = event_code;
}
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SDL_zero(mouse);
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mouse.id = DevList[i].id;
mouse.FreeMouse = X11_FreeMouse;
mouse.driverdata = data;
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/* lets get the device parameters */
valInfo = (XValuatorInfo *) deviceClass;
/* if the device reports pressure, lets check it parameteres */
if (valInfo->num_axes > 2) {
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SDL_AddMouse(&mouse, DevList[i].name,
valInfo->axes[2].max_value,
valInfo->axes[2].min_value, 1);
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SDL_AddMouse(&mouse, DevList[i].name, 0, 0, 1);
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#ifndef IsXExtensionPointer
#define IsXExtensionPointer 4
#endif
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if (DevList[i].use == IsXExtensionPointer) {
++num_mice;
}
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break;
}
/* if it's not class we're interested in, lets go further */
deviceClass =
(XAnyClassPtr) ((char *) deviceClass +
deviceClass->length);
}
}
}
XFreeDeviceList(DevList);
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if (num_mice == 0) {
SDL_zero(mouse);
SDL_AddMouse(&mouse, "CorePointer", 0, 0, 1);
}
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}
void
X11_QuitMouse(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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/* !!! FIXME: use XCloseDevice()? Or maybe handle under SDL_MouseQuit()? */
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/* let's delete all of the mice */
SDL_MouseQuit();
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}
/* vi: set ts=4 sw=4 expandtab: */