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Improved comments in implementation of button, checkbox, numupdown, tft, touch and screen modules/submodules.

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t-moe
2015-05-17 14:23:12 +02:00
parent e46314b760
commit 2d463366c1
9 changed files with 441 additions and 396 deletions
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227
common/touch/touch.c
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@@ -2,11 +2,23 @@
#include "ll_touch.h"
#include <stdio.h>
#define NUM_AREAS 50 //Number of Structs Reserved in Memory for TouchAreas (e.g Buttons)
TOUCH_AREA_STRUCT* areas[NUM_AREAS] = {NULL};
/* The idea is as follows:
* The user can add "touch-areas" which basically represent a rectangles on the screen.
* Once the user touches such a rectangle with the pen, we forward events to his provided callback.
* Touch events are provided to us from the low level implementation via touch_add_raw_event().
* We then need to check which touch areas are effected by that event
*/
volatile POINT_STRUCT pos;
volatile TOUCH_STATE oldState=TOUCH_UP;
/* Possible improvements:
* Exchange pointer-list "areas" with a linked list. This would ensure that we can always accept new regions
* Implement calibration stuff, and calculate the real coordinates out of the data provided in touch_add_raw_event()
*/
#define NUM_AREAS 50 //Number of Touch Areas we can manage
TOUCH_AREA_STRUCT* areas[NUM_AREAS] = {NULL}; //list with pointers to all managed touch area's
volatile POINT_STRUCT pos; //the last touch point
volatile TOUCH_STATE oldState=TOUCH_UP; //the last touch state
bool touch_init() {
return ll_touch_init();
@@ -14,117 +26,124 @@ bool touch_init() {
bool touch_add_raw_event(uint16_t touchX, uint16_t touchY, TOUCH_STATE state) {
bool penDown = (state==TOUCH_DOWN);
bool oldPenDown = (oldState==TOUCH_DOWN);
oldState=state;
//Update current and old position/state
bool penDown = (state==TOUCH_DOWN);
bool oldPenDown = (oldState==TOUCH_DOWN);
oldState=state;
pos.x=touchX;
pos.y=touchY;
if(penDown)
{
// tftDrawPixel(touchX,touchY,WHITE);
if(!oldPenDown) //First Touch
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL && touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2 )
{
areas[z]->flags=1; //PenInside=1
if(areas[z]->hookedActions & PEN_DOWN)
areas[z]->callback(areas[z],PEN_DOWN);
}
}
}
else //Second, Third
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL )
{
if(touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2)
{
if(areas[z]->flags==0) //PenInside ==0
{
areas[z]->flags=1; //PenInside=1
if(areas[z]->hookedActions & PEN_ENTER)
areas[z]->callback(areas[z],PEN_ENTER);
}
}
else if(areas[z]->flags) //PenInside==1
{
areas[z]->flags=0; //PenInside=0
if(areas[z]->hookedActions & PEN_LEAVE)
areas[z]->callback(areas[z],PEN_LEAVE);
}
}
}
}
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL && areas[z]->hookedActions&PEN_MOVE)
{
if(touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2)
{
areas[z]->callback(areas[z],PEN_MOVE);
}
}
}
}
else
{
if(oldPenDown) //Was the pen ever down (or was it a too short touch)
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL && touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2 )
{
areas[z]->flags=0; //PenInside = 0;
if(areas[z]->hookedActions & PEN_UP)
areas[z]->callback(areas[z],PEN_UP);
}
}
}
touchX=0xFFFF;
touchY=0xFFFF;
}
if(penDown) //pen is down now
{
//tft_draw_pixel(touchX,touchY,WHITE);
if(!oldPenDown) //pen wasn't down before (positive edge) => First Touch
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
//Check if pos is inside area
if(areas[z]!=NULL && touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2 )
{
areas[z]->flags=1; //Save PenInside=1
if(areas[z]->hookedActions & PEN_DOWN) //The user wants to receive pen down events
areas[z]->callback(areas[z],PEN_DOWN); //Send event to user callback
}
}
}
else //Pen was down before => Second, Third event in row
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL )
{
//Check if pos is inside area
if(touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2)
{
if(areas[z]->flags==0) //Pen was not inside before (PenInside==0)
{
areas[z]->flags=1; //Pen is inside now (PenInside=1)
if(areas[z]->hookedActions & PEN_ENTER) //The user wants to receive pen enter events
areas[z]->callback(areas[z],PEN_ENTER);
}
}
else if(areas[z]->flags) //Pos not inside area, but it was before (PenInside==1)
{
areas[z]->flags=0; //Pen is no longer inside (PenInside=0)
if(areas[z]->hookedActions & PEN_LEAVE) //The user wants to receive pen leave events
areas[z]->callback(areas[z],PEN_LEAVE);
}
}
}
}
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
if(areas[z]!=NULL && (areas[z]->hookedActions&PEN_MOVE)) //User want's to receive pen move events
{
//Check if pos is inside area
if(touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2)
{
areas[z]->callback(areas[z],PEN_MOVE);
}
}
}
}
else //pen is not down now
{
if(oldPenDown) //but it was down before (negative edge)
{
for(int z=0; z < NUM_AREAS; z++) // For every touch area
{
//Check if pos is inside area
if(areas[z]!=NULL && touchX >= areas[z]->x1 && touchX <= areas[z]->x2 && touchY >= areas[z]->y1 && touchY <= areas[z]->y2 )
{
areas[z]->flags=0; //The pen is no longer inside (PenInside = 0);
if(areas[z]->hookedActions & PEN_UP) //user want's to receive pen up events
areas[z]->callback(areas[z],PEN_UP);
}
}
}
}
return true;
}
bool touch_have_empty(unsigned char num)
{
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==NULL) num--;
if(num==0) return true;
}
return false;
}
bool touch_register_area(TOUCH_AREA_STRUCT* area) //Registers an Area (fill Struct first). Return false if no more Space in the Pointertable (-->Change NUM_AREAS).
{
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==NULL)
{
area->flags=0;
areas[i]=area;
return true;
}
}
return false;
//go through pointer array and check for free spaces
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==NULL) num--; //a free space was found, we need one less
if(num==0) return true; //enough free spaces found
}
return false; //not enough free spaces found
}
void touch_unregister_area(TOUCH_AREA_STRUCT* area)//Unregisters an Area
bool touch_register_area(TOUCH_AREA_STRUCT* area)
{
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==area)
{
areas[i]=NULL;
break;
}
}
//go through pointer array and check for free space
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==NULL) //free space found
{
area->flags=0; //we start with empty flags (PenInside=0)
areas[i]=area; //save pointer into list
return true;
}
}
return false; //no free space found
}
void touch_unregister_area(TOUCH_AREA_STRUCT* area)
{
if(area==NULL) return;
//go through pointer array and find the area to remove
for(unsigned char i=0; i<NUM_AREAS; i++)
{
if(areas[i]==area) //area found in pointer array at pos i
{
areas[i]=NULL; //set pointer in list to NULL again
break;
}
}
}