画鼠标和触摸屏光标流程
来源：互联网 发布：阿里云香港服务器延迟 编辑：程序博客网 时间：2024/05/21 09:11
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::processEventsLockedD/InputReader( 369): InputReader::processEventsLocked call InputReader::processEventsForDeviceLockedD/InputReader( 369): InputReader::processEventsForDeviceLocked call InputDevice::processD/InputReader( 369): InputDevice::process call InputMapper::process, numMappers=1D/InputReader( 369): CursorInputMapper::process call CursorInputMapper->syncD/InputReader( 370): CursorInputMapper::sync call mPointerController->moveD/PointerController( 370): Move pointer by deltaX=-2.000, deltaY=0.000D/PointerController( 370): PointerController::updatePointerLocked start...D/Sprites ( 370): openTransactionD/Sprites ( 370): setLayer,layer=0D/Sprites ( 370): setPosition,x=1050.746338,y=534.966919D/Sprites ( 370): invalidateLockedD/Sprites ( 370): invalidateSpriteLockedD/Sprites ( 370): setAlpha,alpha=1.000000D/Sprites ( 370): setVisible,old=1,visible=1D/Sprites ( 370): closeTransactionD/Sprites ( 370): closeTransaction, send MSG_UPDATE_SPRITESD/PointerController( 370): :PointerController::updatePointerLocked end...D/PointerController( 370): PointerController::updatePointerLocked start...D/Sprites ( 370): openTransactionD/Sprites ( 370): setLayer,layer=0D/Sprites ( 370): setPosition,x=1050.746338,y=534.966919D/Sprites ( 370): setAlpha,alpha=1.000000D/Sprites ( 370): setVisible,old=1,visible=1D/Sprites ( 370): closeTransactionD/PointerController( 370): PointerController::updatePointerLocked end...D/PointerController( 370): getPosition x=1050.746, y=534.967D/Sprites ( 370): handleMessageD/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 5int 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::processD/InputReader( 356): type=3,code=0,value=500D/InputReader( 356): SingleTouchInputMapper::processD/InputReader( 356): type=3,code=1,value=500D/InputReader( 356): SingleTouchInputMapper::processD/InputReader( 356): type=0,code=0,value=0D/InputReader( 356): call sync...D/InputReader( 356): sync mDeviceMode=3D/InputReader( 356): SingleTouchInputMapper::syncTouch, isToolActive=1D/InputReader( 356): syncTouch: pointerCount 1 -> 1, touching ids 0x00000000 -> 0x00000000, hovering ids 0x80000000 -> 0x80000000D/InputReader( 356): sync Line:4107D/InputReader( 356): sync Line:4110D/InputReader( 356): sync Line:4127D/InputReader( 356): sync Line:4139,pointerUsage=2D/InputReader( 356): sync Line:4150,pointerUsage=2D/InputReader( 356): dispatchPointerUsage mPointerUsage=2D/Sprites ( 356): setPosition,x=499.609680,y=499.306519D/Sprites ( 356): setPosition,x=499.609680,y=499.306519D/Sprites ( 356): setPosition:x=499.609680,y=499.306519D/Sprites ( 356): setPosition:hotx=6.000000,hoty=6.000000D/InputReader( 356): SingleTouchInputMapper::processD/InputReader( 356): type=3,code=0,value=600D/InputReader( 356): SingleTouchInputMapper::processD/InputReader( 356): type=3,code=1,value=600D/InputReader( 356): SingleTouchInputMapper::processD/InputReader( 356): type=0,code=0,value=0D/InputReader( 356): call sync...D/InputReader( 356): sync mDeviceMode=3D/InputReader( 356): SingleTouchInputMapper::syncTouch, isToolActive=1D/InputReader( 356): syncTouch: pointerCount 1 -> 1, touching ids 0x00000000 -> 0x00000000, hovering ids 0x80000000 -> 0x80000000D/InputReader( 356): sync Line:4107D/InputReader( 356): sync Line:4110D/InputReader( 356): sync Line:4127D/InputReader( 356): sync Line:4139,pointerUsage=2D/InputReader( 356): sync Line:4150,pointerUsage=2D/InputReader( 356): dispatchPointerUsage mPointerUsage=2D/Sprites ( 356): setPosition,x=599.531616,y=599.167847D/Sprites ( 356): setPosition,x=599.531616,y=599.167847D/Sprites ( 356): setPosition:x=599.531616,y=599.167847D/Sprites ( 356): setPosition:hotx=6.000000,hoty=6.000000
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