画鼠标和触摸屏光标流程
1. 画鼠标光标流程
设置新的Mouse Cursor位置与画Mouse Cursor是异步的。
InputReader::loopOnce->
InputReader::processEventsLocked->
InputReader::processEventsForDeviceLocked->
InputDevice::process(numMappers=1)->
InputMapper::process(CursorInputMapper::process)->
CursorInputMapper::sync->
PointerController::move (偏移量)->
PointerController::setPositionLocked(绝对值)
PointerController::updatePointerLocked
*SpriteController::openTransaction()
*SpriteController::SpriteImpl::setLayer(int32_t layer)
*SpriteController::SpriteImpl::setPosition(float x, float y) (绝对值,画光标的屏幕坐标)
SpriteController::SpriteImpl::invalidateLocked->(如果位置有变，则调用此函数)
SpriteController::invalidateSpriteLocked
*SpriteController::SpriteImpl::setAlpha(float alpha)
*SpriteController::SpriteImpl::setVisible(bool visible)
*SpriteController::SpriteImpl::setIcon(const SpriteIcon& icon)
*SpriteController::closeTransaction()(发送MSG_UPDATE_SPRITES消息给SpriteController)
画光标：
SpriteController::handleMessage(const Message& message)->
SpriteController::doUpdateSprites()(真正负责画光标)
1.1 Log信息(移动鼠标)
D/InputReader( 369): InputReader::loopOnce call InputReader::processEventsLocked D/InputReader( 369): InputReader::processEventsLocked call InputReader::processEventsForDeviceLocked D/InputReader( 369): InputReader::processEventsForDeviceLocked call InputDevice::process D/InputReader( 369): InputDevice::process call InputMapper::process, numMappers=1 D/InputReader( 369): CursorInputMapper::process call CursorInputMapper->sync D/InputReader( 370): CursorInputMapper::sync call mPointerController->move D/PointerController( 370): Move pointer by deltaX=-2.000, deltaY=0.000 D/PointerController( 370): PointerController::updatePointerLocked start... D/Sprites ( 370): openTransaction D/Sprites ( 370): setLayer,layer=0 D/Sprites ( 370): setPosition,x=1050.746338,y=534.966919 D/Sprites ( 370): invalidateLocked D/Sprites ( 370): invalidateSpriteLocked D/Sprites ( 370): setAlpha,alpha=1.000000 D/Sprites ( 370): setVisible,old=1,visible=1 D/Sprites ( 370): closeTransaction D/Sprites ( 370): closeTransaction, send MSG_UPDATE_SPRITES D/PointerController( 370): :PointerController::updatePointerLocked end... D/PointerController( 370): PointerController::updatePointerLocked start... D/Sprites ( 370): openTransaction D/Sprites ( 370): setLayer,layer=0 D/Sprites ( 370): setPosition,x=1050.746338,y=534.966919 D/Sprites ( 370): setAlpha,alpha=1.000000 D/Sprites ( 370): setVisible,old=1,visible=1 D/Sprites ( 370): closeTransaction D/PointerController( 370): PointerController::updatePointerLocked end... D/PointerController( 370): getPosition x=1050.746, y=534.967 D/Sprites ( 370): handleMessage D/Sprites ( 370): doUpdateSprites
2. 画触摸屏光标流程
InputReader::loopOnce->
InputReader::processEventsLocked->
InputReader::processEventsForDeviceLocked->
InputDevice::process(numMappers=1)->
InputMapper::process(SingleTouchInputMapper::process->TouchInputMapper::process)->
TouchInputMapper::sync->
SingleTouchInputMapper::syncTouch(获取touch数据)->
TouchInputMapper::dispatchPointerUsage->
TouchInputMapper::dispatchPointerStylus->
PointerController::setPosition->
PointerController::setPositionLocked(绝对值)
PointerController::updatePointerLocked
*SpriteController::openTransaction()
*SpriteController::SpriteImpl::setLayer(int32_t layer)
*SpriteController::SpriteImpl::setPosition(float x, float y) (绝对值,画光标的屏幕坐标)
SpriteController::SpriteImpl::invalidateLocked->(如果位置有变，则调用此函数)
SpriteController::invalidateSpriteLocked
*SpriteController::SpriteImpl::setAlpha(float alpha)
*SpriteController::SpriteImpl::setVisible(bool visible)
*SpriteController::SpriteImpl::setIcon(const SpriteIcon& icon)
*SpriteController::closeTransaction()(发送MSG_UPDATE_SPRITES消息给SpriteController)
画光标：
SpriteController::handleMessage(const Message& message)->
SpriteController::doUpdateSprites()(真正负责画光标)
2.1 产生Touch Move和Touch Button的实例代码
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <android/log.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/stat.h>
#include "uinput.h"
#define LOG_TAG "TOUCH_TEST"
#define ALOGI(fmt, args...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, fmt, ##args)
#define ALOGD(fmt, args...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, fmt, ##args)
#define ALOGE(fmt, args...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, fmt, ##args)
#define BUTTON_DOWN 1
#define BUTTON_UP 0
/* global variable */
static int uinput_fd = -1;
struct uinput_user_dev uinput; // uInput device structure
/* Setup the uinput device */
int setup_uinput_device()
{
//int i=0;
int ret;
// Open the input device
uinput_fd = open("/dev/uinput", O_WRONLY | O_NDELAY);
if (uinput_fd < 0){
ALOGE("Unable to open /dev/uinput/n");
return -1;
}
memset(&uinput,0,sizeof(uinput)); // Intialize the uInput device to NULL
strncpy(uinput.name, "vtouch", UINPUT_MAX_NAME_SIZE);
uinput.id.version = 4;
uinput.id.bustype = BUS_USB;
uinput.absmin[ABS_X] = 0;
uinput.absmax[ABS_X] = 1280;
uinput.absmin[ABS_Y] = 0;
uinput.absmax[ABS_Y] = 720;
// Setup the uinput device
ret = ioctl(uinput_fd, UI_SET_EVBIT, EV_ABS);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_EVBIT, EV_KEY);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_ABSBIT, ABS_X);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_ABSBIT, ABS_Y);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOUCH);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOOL_MOUSE);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOOL_PEN);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
ret = ioctl(uinput_fd, UI_SET_KEYBIT, KEY_BACK);
if(ret){
ALOGE("ioctl fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
/*
ioctl(uinput_fd, UI_SET_EVBIT, EV_KEY);
ioctl(uinput_fd, UI_SET_EVBIT, EV_REL);
ioctl(uinput_fd, UI_SET_RELBIT, REL_X);
ioctl(uinput_fd, UI_SET_RELBIT, REL_Y);
for (i=0; i < 256; i++) {
ioctl(uinput_fd, UI_SET_KEYBIT, i);
}
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MOUSE);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOUCH);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MOUSE);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_LEFT);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MIDDLE);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_RIGHT);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_FORWARD);
ioctl(uinput_fd, UI_SET_KEYBIT, BTN_BACK);
*/
// Create input device into input sub-system
if(write(uinput_fd, &uinput, sizeof(uinput))== -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
if(ioctl(uinput_fd, UI_DEV_CREATE))
{
ALOGE("Unable to create UINPUT device.");
return -1;
}
return 0;
}
/* Destroy the uinput device */
int destroy_uinput_device()
{
// Destroy the uinput device
ioctl(uinput_fd, UI_DEV_DESTROY);
// Close the uinput device
close(uinput_fd);
}
int write_touch_move(int x, int y)
{
struct input_event event;
int ret;
// Move pointer to (0,0) location
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_ABS;
event.code = ABS_X;
event.value = x;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_ABS;
event.code = ABS_Y;
event.value = y;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_KEY;
event.code = BTN_TOOL_PEN;
event.value = 1;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
ret = write(uinput_fd, &event, sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
return 0;
}
int write_touch_hide(void)
{
struct input_event event;
int ret;
// Move pointer to (0,0) location
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_ABS;
event.code = ABS_X;
event.value = 0;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_ABS;
event.code = ABS_Y;
event.value = 0;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_KEY;
event.code = BTN_TOOL_PEN;
event.value = 0;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
ret = write(uinput_fd, &event, sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
return 0;
}
int write_key(int key, int down)
{
struct input_event event;
int ret;
// Move pointer to (0,0) location
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_KEY;
event.code = key;
event.value = down;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
ret = write(uinput_fd, &event, sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
return 0;
}
int write_touch_button(int x, int y, int down)
{
struct input_event event;
int ret;
// Move pointer to (0,0) location
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_ABS;
event.code = ABS_X;
event.value = x;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_ABS;
event.code = ABS_Y;
event.value = y;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_KEY;
event.code = BTN_TOUCH;
event.value = down;
ret = write(uinput_fd,&event,sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
ret = write(uinput_fd, &event, sizeof(event));
if(ret == -1){
ALOGE("write fail:%s(%d)",__FUNCTION__,__LINE__);
return -1;
}
return 0;
}
#define DIS_PIXEL 1
#define DUR_TIME 5
int main(int argc, char** argv) {
int i;
// Initialize uinput device
if(setup_uinput_device()){
ALOGE("setup uinput device fail");
return -1;
}
// Send gsensor event
int write_count=0;
int count =0;
int x=0,y=0;
count = 0;
while(1){ // for touch screen
x = 10;
y = 10;
while(x <1270){
write_touch_move(x,y);
x+=DIS_PIXEL;
usleep(DUR_TIME*1000);
}
y+=DIS_PIXEL;
while(y < 710){
write_touch_move(x,y);
y+=DIS_PIXEL;
usleep(DUR_TIME*1000);
}
x -=DIS_PIXEL;
while(x > 10){
write_touch_move(x,y);
x-=DIS_PIXEL;
usleep(DUR_TIME*1000);
}
/*
y -=DIS_PIXEL;
while(y > 10){
write_touch_move(x,y);
y-=DIS_PIXEL;
usleep(DUR_TIME*1000);
}
*/
write_touch_hide();
sleep(5);
/*
count++;
if(count>5){
while(1){
sleep(60);
}
}
*/
}
// Destroy uinput device
destroy_uinput_device();
return 0;
}
2.2 log信息
D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=3,code=0,value=500 D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=3,code=1,value=500 D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=0,code=0,value=0 D/InputReader( 356): call sync... D/InputReader( 356): sync mDeviceMode=3 D/InputReader( 356): SingleTouchInputMapper::syncTouch, isToolActive=1 D/InputReader( 356): syncTouch: pointerCount 1 -> 1, touching ids 0x00000000 -> 0x00000000, hovering ids 0x80000000 -> 0x80000000 D/InputReader( 356): sync Line:4107 D/InputReader( 356): sync Line:4110 D/InputReader( 356): sync Line:4127 D/InputReader( 356): sync Line:4139,pointerUsage=2 D/InputReader( 356): sync Line:4150,pointerUsage=2 D/InputReader( 356): dispatchPointerUsage mPointerUsage=2 D/Sprites ( 356): setPosition,x=499.609680,y=499.306519 D/Sprites ( 356): setPosition,x=499.609680,y=499.306519 D/Sprites ( 356): setPosition:x=499.609680,y=499.306519 D/Sprites ( 356): setPosition:hotx=6.000000,hoty=6.000000 D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=3,code=0,value=600 D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=3,code=1,value=600 D/InputReader( 356): SingleTouchInputMapper::process D/InputReader( 356): type=0,code=0,value=0 D/InputReader( 356): call sync... D/InputReader( 356): sync mDeviceMode=3 D/InputReader( 356): SingleTouchInputMapper::syncTouch, isToolActive=1 D/InputReader( 356): syncTouch: pointerCount 1 -> 1, touching ids 0x00000000 -> 0x00000000, hovering ids 0x80000000 -> 0x80000000 D/InputReader( 356): sync Line:4107 D/InputReader( 356): sync Line:4110 D/InputReader( 356): sync Line:4127 D/InputReader( 356): sync Line:4139,pointerUsage=2 D/InputReader( 356): sync Line:4150,pointerUsage=2 D/InputReader( 356): dispatchPointerUsage mPointerUsage=2 D/Sprites ( 356): setPosition,x=599.531616,y=599.167847 D/Sprites ( 356): setPosition,x=599.531616,y=599.167847 D/Sprites ( 356): setPosition:x=599.531616,y=599.167847 D/Sprites ( 356): setPosition:hotx=6.000000,hoty=6.000000