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touchtest add multi pointer support

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侯歌 2024-04-26 11:27:05 +08:00
parent 8d539ecfd9
commit 2f8e6dfce1
1 changed files with 61 additions and 23 deletions
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84
apps/samples/touchtest.cc
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@ -1,27 +1,18 @@
#include <cdroid.h>
#include <core/inputdevice.h>
#include <porting/cdinput.h>
#include <linux/input.h>
class TouchWindow:public Window{
private:
Point mTouchPoint;
struct TouchPoint{
int x0,y0;
int x1,y1;
};
std::map<int,TouchPoint> mTouchPoints;
int mGridSize;
bool mClear;
public:
TouchWindow(int w,int h):Window(0,0,w,h){
mGridSize =10;
}
bool onTouchEvent(MotionEvent&event)override{
mTouchPoint.x = event.getX();
mTouchPoint.y = event.getY();
mClear = event.getActionMasked()==MotionEvent::ACTION_UP;
LOGI("Point(%d,%d)",mTouchPoint.x,mTouchPoint.y);
invalidate();
return true;
}
void onDraw(Canvas&canvas){
if(mClear){
canvas.set_source_rgb(0,0,0);
canvas.rectangle(0,0,getWidth(),getHeight());
canvas.fill();
}
protected:
void drawGrid(Canvas&canvas){
for(int x=0,i=0;x<getWidth();x+=mGridSize,i++){
canvas.move_to(x,0);
canvas.line_to(x,getHeight());
@ -34,12 +25,59 @@ public:
canvas.set_source_rgba(.5,.5,.5,(i%10==0)?1.f:0.4f);
canvas.stroke();
}
canvas.stroke();
canvas.set_source_rgb(0,1,0);
canvas.arc(mTouchPoint.x,mTouchPoint.y,6,0,M_PI*2.f);
canvas.fill();
}
public:
TouchWindow(int w,int h):Window(0,0,w,h){
mGridSize =10;
mClear =true;
}
bool onTouchEvent(MotionEvent&event)override{
switch(event.getActionMasked()){
case MotionEvent::ACTION_UP:
mClear = event.getActionMasked()==MotionEvent::ACTION_UP;
invalidate();
break;
case MotionEvent::ACTION_DOWN:
case MotionEvent::ACTION_POINTER_DOWN:{
int pointer = event.getActionIndex();
auto it = mTouchPoints.find(pointer);
if(it==mTouchPoints.end()){
TouchPoint pt={-1,-1,-1,-1};
pt.x1=event.getX(pointer);
pt.y1=event.getY(pointer);
it=mTouchPoints.insert({pointer,pt}).first;
}else{
TouchPoint& npt=it->second;
npt.x1=event.getX(pointer);
npt.y1=event.getY(pointer);
}
invalidate();
}break;
default:break;
}
return true;
}
void onDraw(Canvas&canvas)override{
if(mClear){
canvas.set_source_rgb(0,0,0);
canvas.paint();
}
drawGrid(canvas);
for(auto it=mTouchPoints.begin();it!=mTouchPoints.end();it++){
TouchPoint& pt = it->second;
if( (pt.x0>=0) && (pt.y0>=0) ){
canvas.set_source_rgb(0,1,float(it->first)/mTouchPoints.size());
canvas.move_to(pt.x0,pt.y0);
canvas.line_to(pt.x1,pt.y1);
canvas.stroke();
}
pt.x0 = pt.x1;
pt.y0 = pt.y1;
}
}
};
int main(int argc,const char*argv[]){
App app(argc,argv);
Point sz;