143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#include "gfx.h"
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#include <linux/input.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
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#define GMOUSE_DRIVER_VMT GMOUSEVMT_LINUX_EVENT
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#include "src/ginput/ginput_driver_mouse.h"
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// Include the board file
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#include "gmouse_lld_linux_event_board.h"
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// Private area definition
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// We need to store the last reading ourselves because we only get events
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// from the Linux system. When touching the touchscreen and then moving around,
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// we only get one z = 1 event. However, the GINPUT module expects z = 1 to be
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// true for the entire touch duration.
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typedef struct privStruct {
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int fd;
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GMouseReading lastReading;
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} privStruct;
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static bool_t _init(GMouse* m, unsigned driverInstance)
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{
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(void)driverInstance;
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// Retrive the private area struct
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privStruct* priv = (privStruct*)(m+1);
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// Open the device
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priv->fd = open(GMOUSE_LINUX_EVENT_DEVICE, O_RDONLY | O_NONBLOCK);
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if (priv->fd < 0) {
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fprintf(stderr, "GINPUT Mouse: Cannot open input device (%s)\n", GMOUSE_LINUX_EVENT_DEVICE);
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return FALSE;
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}
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// Initialize
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priv->lastReading.buttons = 0;
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priv->lastReading.x = 0;
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priv->lastReading.y = 0;
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priv->lastReading.z = 0;
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return TRUE;
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}
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static bool_t _read(GMouse* m, GMouseReading* pdr)
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{
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int i;
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int rb;
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struct input_event ev[64];
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privStruct* priv;
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// Retrive the private area struct
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priv = (privStruct*)(m+1);
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// Assume not touched
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pdr->buttons = 0;
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pdr->z = priv->lastReading.z;
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pdr->x = priv->lastReading.x;
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pdr->y = priv->lastReading.y;
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// Read
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rb = read(priv->fd, ev, sizeof(struct input_event)*64);
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// Parse
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if (rb > 0) {
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for (i = 0; i < (int)(rb / sizeof(struct input_event)); i++) {
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if (ev[i].type == EV_KEY && ev[i].code == 330 && ev[i].value == 1) {
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pdr->z = 1;
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}
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else if (ev[i].type == EV_KEY && ev[i].code == 330 && ev[i].value == 0) {
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pdr->z = 0;
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}
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else if (ev[i].type == EV_ABS && ev[i].code == 0 && ev[i].value > 0) {
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pdr->x = ev[i].value;
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}
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else if (ev[i].type == EV_ABS && ev[i].code == 1 && ev[i].value > 0) {
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pdr->y = ev[i].value;
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}
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}
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}
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// Store the current reading
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priv->lastReading.x = pdr->x;
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priv->lastReading.y = pdr->y;
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priv->lastReading.z = pdr->z;
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priv->lastReading.buttons = pdr->buttons;
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return TRUE;
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}
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const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
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{
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GDRIVER_TYPE_TOUCH,
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#if GMOUSE_LINUX_EVENT_FINGERMODE
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GMOUSE_VFLG_DEFAULTFINGER |
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#endif
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#if GMOUSE_LINUX_EVENT_SELF_CALIBRATE
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GMOUSE_VFLG_TOUCH | GMOUSE_VFLG_ONLY_DOWN | GMOUSE_VFLG_POORUPDOWN ,
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#else
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GMOUSE_VFLG_TOUCH | GMOUSE_VFLG_ONLY_DOWN | GMOUSE_VFLG_POORUPDOWN |GMOUSE_VFLG_CALIBRATE,
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#endif
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sizeof(GMouse) + sizeof(privStruct),
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_gmouseInitDriver,
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_gmousePostInitDriver,
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_gmouseDeInitDriver
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},
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1, // z_max - (currently?) not supported
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0, // z_min - (currently?) not supported
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1, // z_touchon
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0, // z_touchoff
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{ // pen_jitter
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0, // calibrate
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0, // click
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0 // move
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},
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{ // finger_jitter
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0, // calibrate
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0, // click
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0 // move
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},
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_init, // init
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0, // deinit
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_read, // get
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0, // calsave
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0 // calload
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}};
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#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */
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