pandory500/SDL-mirror
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Added pressure support for touch events.

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This commit is contained in:
Jim Grandpre 2010-05-29 02:09:16 -04:00
parent 11b6823d3f
commit 3dcae4341c
6 changed files with 38 additions and 18 deletions
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31
touchTest/touchTest.c
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@ -22,8 +22,13 @@ typedef struct {
int x,y;
} Point;
typedef struct {
Point p;
int pressure;
} Finger;
Point finger[MAXFINGERS];
Finger finger[MAXFINGERS];
void handler (int sig)
{
@ -56,9 +61,12 @@ void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
{
float a;
for(a=0;a<2*PI;a+=1.f/(float)r)
for(a=0;a<PI/2;a+=1.f/(float)r)
{
setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
setpix(screen,(int)(x-r*cos(a)),(int)(y+r*sin(a)),c);
setpix(screen,(int)(x+r*cos(a)),(int)(y-r*sin(a)),c);
setpix(screen,(int)(x-r*cos(a)),(int)(y-r*sin(a)),c);
}
}
@ -85,8 +93,8 @@ void DrawScreen(SDL_Surface* screen, int h)
int i;
for(i=0;i<MAXFINGERS;i++)
if(finger[i].x >= 0 && finger[i].y >= 0)
drawCircle(screen,finger[i].x,finger[i].y,20,0xFF6600);
if(finger[i].p.x >= 0 && finger[i].p.y >= 0)
drawCircle(screen,finger[i].p.x,finger[i].p.y,20,0xFF6600-finger[i].pressure);
if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
@ -157,20 +165,23 @@ int main(int argc, char* argv[])
//printf("Finger: %i,x: %i, y: %i\n",event.tfinger.fingerId,
// event.tfinger.x,event.tfinger.y);
finger[event.tfinger.fingerId].x = event.tfinger.x;
finger[event.tfinger.fingerId].y = event.tfinger.y;
finger[event.tfinger.fingerId].p.x = event.tfinger.x;
finger[event.tfinger.fingerId].p.y = event.tfinger.y;
finger[event.tfinger.fingerId].pressure = event.tfinger.pressure;
printf("Finger: %i, pressure: %i\n",event.tfinger.fingerId,
event.tfinger.pressure);
break;
case SDL_FINGERDOWN:
printf("Figner: %i down - x: %i, y: %i\n",event.tfinger.fingerId,
event.tfinger.x,event.tfinger.y);
finger[event.tfinger.fingerId].x = event.tfinger.x;
finger[event.tfinger.fingerId].y = event.tfinger.y;
finger[event.tfinger.fingerId].p.x = event.tfinger.x;
finger[event.tfinger.fingerId].p.y = event.tfinger.y;
break;
case SDL_FINGERUP:
printf("Figner: %i up - x: %i, y: %i\n",event.tfinger.fingerId,
event.tfinger.x,event.tfinger.y);
finger[event.tfinger.fingerId].x = -1;
finger[event.tfinger.fingerId].y = -1;
finger[event.tfinger.fingerId].p.x = -1;
finger[event.tfinger.fingerId].p.y = -1;
break;
}
}