Added calibrate screen (WIP). fixed bug in emulator drawing.

common/touch/screen_calibrate.c

@@ -0,0 +1,102 @@
+#include "screen_calibrate.h"
+#include "tft.h"
+#include "touch.h"
+
+
+#define CCENTER 20  //Pixel Distance from Sides for Calibration Cross
+#define CLENGTH 10	//Length of the Calibration Cross Lines
+#define CBEGIN (CCENTER-CLENGTH/2)
+#define CEND (CCENTER + CLENGTH/2)
+#define DWIDTH 320
+#define DHEIGHT 240
+
+extern volatile bool calibration; //from touch.c
+
+
+static void enter(void* screen) {
+	int _x1,_y1,_x2,_y2,dx,dy;
+
+	tft_clear(BLACK);
+
+	tft_print_line(50,50,WHITE,BLACK,0,"Hit the markers exactly!");
+	//-----------------First Point--------------------
+	tft_draw_line(CCENTER,CBEGIN,CCENTER,CEND,WHITE);	//Draw Cross
+	tft_draw_line(CBEGIN,CCENTER,CEND,CCENTER,WHITE);	//Draw Cross
+	calibration=1; //TouchX + TouchY Values will not be converted to Pixels
+	while(calibration);	//Wait on PenUp
+	POINT_STRUCT p1 = touch_get_last_point();
+	_x1=p1.x;
+	_y1=p1.y;
+	tft_fill_rectangle(CBEGIN,CBEGIN,CEND,CEND,BLACK); //Clear Cross
+
+	//-----------------Second Point-------------------
+	tft_draw_line(DWIDTH-CCENTER,DHEIGHT-CBEGIN,DWIDTH-CCENTER,DHEIGHT-CEND,WHITE);
+	tft_draw_line(DWIDTH-CBEGIN,DHEIGHT-CCENTER,DWIDTH-CEND,DHEIGHT-CCENTER,WHITE);
+	calibration=1;
+	while(calibration);
+	POINT_STRUCT p2 = touch_get_last_point();
+	_x2=p2.x;
+	_y2=p2.y;
+	tft_fill_rectangle(DWIDTH-CBEGIN,DHEIGHT-CBEGIN,DWIDTH-CEND,DHEIGHT-CEND,BLACK);
+
+	//-----------------Third Point--------------------
+	tft_draw_line(CCENTER,DHEIGHT-CBEGIN,CCENTER,DHEIGHT-CEND,WHITE);
+	tft_draw_line(CBEGIN,DHEIGHT-CCENTER,CEND,DHEIGHT-CCENTER,WHITE);
+		calibration=1;
+	while(calibration);
+	POINT_STRUCT p3 = touch_get_last_point();
+	_x1+=p3.x; //Add(!) values. We'll build the average later
+	_y2+=p3.y;
+	tft_fill_rectangle(CBEGIN,DHEIGHT-CBEGIN,CEND,DHEIGHT-CEND,BLACK);
+
+	//------------------4. Point---------------------
+	tft_draw_line(DWIDTH-CCENTER,CBEGIN,DWIDTH-CCENTER,CEND,WHITE);
+	tft_draw_line(DWIDTH-CBEGIN,CCENTER,DWIDTH-CEND,CCENTER,WHITE);
+	calibration=1;
+	while(calibration);
+	POINT_STRUCT p4 = touch_get_last_point();
+	_x2+=p4.x;
+	_y1+=p4.y;
+	tft_fill_rectangle(DWIDTH-CBEGIN,CBEGIN,DWIDTH-CEND,CEND,BLACK);
+	//-------------------Calculation---------------------
+	_x1++; //Add 1 and divide by 2 later = +0.5 (for correct rounding)
+	_y1++;
+	_x2++;
+	_y2++;
+	_x1>>=1; //Divide by 2
+	_y1>>=1;
+	_x2>>=1;
+	_y2>>=1;
+	dx = (_x2-_x1);	//Build the Difference
+	dy = (_y2-_y1);
+
+	touch_set_calibration_valules(_x1,dx,_y1,dy);
+	tft_print_line(50,50,WHITE,BLACK,0,"Calibration Done. Press anywhere");
+
+	calibration=1;
+	while(calibration);
+	gui_screen_back();
+
+}
+
+static void leave(void* screen) {
+
+}
+
+static void update(void* screen) {
+
+}
+
+
+static SCREEN_STRUCT screen = {
+	enter,
+	leave,
+	update
+};
+
+
+SCREEN_STRUCT* get_screen_calibrate() {
+	return &screen;
+}
+
+