void alphaRefreshScreen(void)
{
uint8_t x, y;
/* Draw keypad */
for (y = 0; y < 6; y++)
{
for (x = 0; x < 5; x++)
{
alphaRenderButton(alphaPage, x, y, false);
}
}
/* Render Text */
drawRectangleFilled(0, 0, lcdGetWidth() - 1, ALPHA_KEYPAD_TOP - (ALPHA_BTN_SPACING * 2), 0xFFFF);
drawString(ALPHA_BTN_SPACING, ALPHA_BTN_SPACING, COLOR_BLACK, &dejaVuSans9ptFontInfo, (char *)&alphaString);
}
void alphaRefreshScreen(void)
{
uint8_t x, y;
/* Draw keypad */
for (y = 0; y < 6; y++)
{
for (x = 0; x < 5; x++)
{
alphaRenderButton(alphaPage, x, y, false);
}
}
/* Render Text */
drawRectangleRounded(ALPHA_BTN_SPACING, ALPHA_BTN_SPACING, lcdGetWidth() - 1 - ALPHA_BTN_SPACING, ALPHA_KEYPAD_TOP - ALPHA_BTN_SPACING, ALPHA_COLOR_INPUTFILL, 10, DRAW_ROUNDEDCORNERS_ALL);
drawString(ALPHA_BTN_SPACING * 3, ALPHA_BTN_SPACING * 3, ALPHA_COLOR_INPUTTEXT, &dejaVuSans9ptFontInfo, (char *)&alphaString);
}
char alphaHandleTouchEvent(void)
{
tsTouchData_t data;
char result = '\0';
uint8_t row, col;
int32_t tsError = -1;
// Blocking delay until a valie touch event occurs
while (tsError)
{
tsError = tsWaitForEvent(&data, 0);
}
// Attempt to convert touch data to char
if ((data.y < ALPHA_ROW1_TOP) || (data.y > ALPHA_ROW6_TOP + ALPHA_BTN_HEIGHT))
{
return result;
}
// Get column
if ((data.x > alphaBtnX[0]) && (data.x < alphaBtnX[0] + ALPHA_BTN_WIDTH))
col = 0;
else if ((data.x > alphaBtnX[1]) && (data.x < alphaBtnX[1] + ALPHA_BTN_WIDTH))
col = 1;
else if ((data.x > alphaBtnX[2]) && (data.x < alphaBtnX[2] + ALPHA_BTN_WIDTH))
col = 2;
else if ((data.x > alphaBtnX[3]) && (data.x < alphaBtnX[3] + ALPHA_BTN_WIDTH))
col = 3;
else if ((data.x > ALPHA_COL5_LEFT) && (data.x < ALPHA_COL5_LEFT + ALPHA_BTN_WIDTH))
col = 4;
else
return result;
// Get row
if ((data.y > ALPHA_ROW1_TOP) && (data.y < ALPHA_ROW1_TOP + ALPHA_BTN_HEIGHT))
row = 0;
else if ((data.y > ALPHA_ROW2_TOP) && (data.y < ALPHA_ROW2_TOP + ALPHA_BTN_HEIGHT))
row = 1;
else if ((data.y > ALPHA_ROW3_TOP) && (data.y < ALPHA_ROW3_TOP + ALPHA_BTN_HEIGHT))
row = 2;
else if ((data.y > ALPHA_ROW4_TOP) && (data.y < ALPHA_ROW4_TOP + ALPHA_BTN_HEIGHT))
row = 3;
else if ((data.y > ALPHA_ROW5_TOP) && (data.y < ALPHA_ROW5_TOP + ALPHA_BTN_HEIGHT))
row = 4;
else if ((data.y > ALPHA_ROW6_TOP) && (data.y < ALPHA_ROW6_TOP + ALPHA_BTN_HEIGHT))
row = 5;
else
return result;
// Match found ... update button and process the results
alphaRenderButton(alphaPage, col, row, true);
result = alphaKeys[alphaPage][row][col];
if (result == '<')
{
// Trim character if backspace was pressed
if (alphaString_ptr > alphaString)
{
alphaString_ptr--;
*alphaString_ptr = '\0';
}
}
else if (result == '*')
{
// Switch page if the shift button was pressed
alphaPage++;
if (alphaPage > 3)
{
alphaPage = 0;
}
// Update the UI
alphaRefreshScreen();
}
else if (result == '>')
{
// OK button
systickDelay(CFG_TFTLCD_TS_KEYPADDELAY);
return '>';
}
else
{
// Add text to string buffer
*alphaString_ptr++ = result;
}
// Brief delay
systickDelay(CFG_TFTLCD_TS_KEYPADDELAY);
// Return button to deselected state
alphaRefreshScreen();
return result;
}
