/********************************************************************
*
* _Explain
*
* Purpose:
* Shows a text to give a short explanation of the sample program
*/
static void _Explain(void) {
_DispStringCentered("At first time, you need to\n"
"calibrate the Touch screen\n"
"Please press the touch\n"
"screen to continue...");
GUI_DispStringHCenterAt("Touch screen Calibration", LCD_GetXSize() / 2, 5);
_WaitForPressedState(1);
_WaitForPressedState(0);
}
/********************************************************************
*
* _Explain
*
* Funtion description
* Shows a text to give a short explanation of the sample program
*/
static void _Explain(void) {
_DispStringCentered("This sample shows how\n"
"a touch screen can be\n"
"calibrated at run time.\n"
"Please press the touch\n"
"screen to continue...");
GUI_DispStringHCenterAt("TOUCH_Calibrate", LCD_GetXSize() / 2, 5);
_WaitForPressedState(1);
_WaitForPressedState(0);
}
/*********************************************************************
*
* _GetPhysValues
*
* Function description
* Asks the user to press the touch screen at the given position
* and returns the physical A/D values
*/
static void _GetPhysValues(int LogX, int LogY, int * pPhysX, int * pPhysY, const char * pString) {
char acText[] = "Press here";
GUI_RECT Rect;
int FontSizeY;
int Align;
FontSizeY = GUI_GetFontSizeY();
GUI_Clear();
GUI_SetColor(GUI_BLACK);
_DispStringCentered("Runtime calibration,\n"
"please touch the screen\n"
"at the center of the ring."); /* Ask user to press the touch */
//
// Calculate the rectangle for the string
//
Rect.y0 = LogY - FontSizeY;
Rect.y1 = LogY + FontSizeY;
if (LogX < LCD_GetXSize() / 2) {
Rect.x0 = LogX + 15;
Rect.x1 = LCD_GetXSize();
Align = GUI_TA_LEFT;
} else {
Rect.x0 = 0;
Rect.x1 = LogX - 15;
Align = GUI_TA_RIGHT;
}
//
// Show the text nearby the ring
//
GUI_DispStringInRect(acText, &Rect, Align | GUI_TA_TOP);
GUI_DispStringInRect(pString, &Rect, Align | GUI_TA_BOTTOM);
//
// Draw the ring
//
GUI_FillCircle(LogX, LogY, 10);
GUI_SetColor(GUI_WHITE);
GUI_FillCircle(LogX, LogY, 5);
GUI_SetColor(GUI_BLACK);
//
// Wait until touch is pressed
//
_WaitForPressedState(1);
*pPhysX = GUI_TOUCH_GetxPhys();
*pPhysY = GUI_TOUCH_GetyPhys();
//
// Wait until touch is released
//
_WaitForPressedState(0);
}
/*********************************************************************
*
* _GetPhysValues
*
* Purpose:
* Asks the user to press the touch screen at the given position
* and returns the physical pixels(A/D) values
*/
static void _GetPhysValues(int LogX, int LogY, int * pPhysX, int * pPhysY, const char * pString) {
char acText[] = "Press here";
GUI_RECT Rect;
GUI_PID_STATE State;
int FontSizeY, Align;
FontSizeY = GUI_GetFontSizeY(); /*获取字体的高度*/
GUI_Clear();
GUI_SetColor(GUI_BLACK);
_DispStringCentered("Runtime calibration,\n"
"please touch the corners of the screen\n"
"at the center of the rings."); /* Ask user to press the touch */
/* Calculate the rectangle for the string(根据触摸点的位置，设置文字显示的区域) */
if (LogX < LCD_GetXSize() / 2) {/*判断是左上角的点，还是有下角的点*/
Rect.x0 = LogX + 25;
Rect.x1 = LCD_GetXSize();
Rect.y0 = LogY - FontSizeY + 5; /*设置大小能显示两行字符*/
Rect.y1 = LogY + FontSizeY + 5;
Align = GUI_TA_LEFT;
} else {
Rect.x0 = 0;
Rect.x1 = LogX - 25;
Rect.y0 = LogY - FontSizeY - 5;
Rect.y1 = LogY + FontSizeY - 5;
Align = GUI_TA_RIGHT;
}
/* Show the text nearby the ring */
GUI_DispStringInRect(acText, &Rect, Align | GUI_TA_TOP);
GUI_DispStringInRect(pString, &Rect, Align | GUI_TA_BOTTOM);
/* Draw the ring */
GUI_FillCircle(LogX, LogY, 10);
GUI_SetColor(GUI_WHITE);
GUI_FillCircle(LogX, LogY, 7);
GUI_SetColor(GUI_BLACK);
/* Wait until touch is pressed */
_WaitForPressedState(1);
/*得到触摸点的值*/
GUI_TOUCH_GetState(&State);
*pPhysX = State.x;
*pPhysY = State.y;
/* Wait until touch is released */
_WaitForPressedState(0);
}
