void VirtualKeyboardGUI::mainLoop() {
Common::EventManager *eventMan = _system->getEventManager();
while (_displaying) {
if (_kbd->_keyQueue.hasStringChanged())
updateDisplay();
animateCaret();
animateCursor();
redraw();
_system->updateScreen();
Common::Event event;
while (eventMan->pollEvent(event)) {
switch (event.type) {
case Common::EVENT_LBUTTONDOWN:
if (_kbdBound.contains(event.mouse)) {
_kbd->handleMouseDown(event.mouse.x - _kbdBound.left,
event.mouse.y - _kbdBound.top);
}
break;
case Common::EVENT_LBUTTONUP:
if (_kbdBound.contains(event.mouse)) {
_kbd->handleMouseUp(event.mouse.x - _kbdBound.left,
event.mouse.y - _kbdBound.top);
}
break;
case Common::EVENT_MOUSEMOVE:
if (_drag)
move(event.mouse.x - _dragPoint.x,
event.mouse.y - _dragPoint.y);
break;
case Common::EVENT_SCREEN_CHANGED:
screenChanged();
break;
case Common::EVENT_QUIT:
_system->quit();
return;
default:
break;
}
}
// Delay for a moment
_system->delayMillis(10);
}
}
// dest: MUST already contain a string, even if empty.
// maxLineLength: Must include room for terminating NUL.
// Returns TRUE if the user pressed Enter, FALSE if Break.
//
byte getLineFromUser(char *dest, word maxLineLength, word initIndex)
{
saveCursorPosition();
word index = initIndex; // offset of cursor in 'dest'
// Print the existing string, if any.
//
word curLen = strlen(dest);
putstr(dest, curLen);
// Put the cursor at 'initIndex'.
//
restoreCursorPosition();
advanceCursor(initIndex);
char key;
for (;;)
{
animateCursor();
key = (char) tolower(inkey());
if (!key)
continue;
if (key == '\r' || key == '\n' || key == BREAK_CHAR) // if Enter (CoCo or PC) or Break
{
dest[curLen] = 0;
break;
}
removeCursor();
if (key == CLEAR_CHAR) // if backspace
{
if (index > 0)
{
word numCharsToMove = curLen - index;
moveBackwardOneByte(dest + index, numCharsToMove);
--index;
--curLen;
putchar('\b');
byte finalX = textPosX, finalY = textPosY;
putstr(dest + index, numCharsToMove);
putchar(' '); // erase last char from screen
moveCursor(finalX, finalY); // place cursor at erased char
}
continue;
}
if (key == SHIFT_CLEAR_CHAR) // if delete
{
if (index < curLen)
{
word numCharsToMove = curLen - index - 1;
moveBackwardOneByte(dest + index + 1, numCharsToMove);
--curLen;
byte finalX = textPosX, finalY = textPosY;
putstr(dest + index, numCharsToMove);
putchar(' '); // erase last char from screen
moveCursor(finalX, finalY); // place cursor at erased char
}
continue;
}
if (key == LEFT_CHAR) // if move cursor left
{
if (index > 0)
{
--index;
putchar('\b');
}
continue;
}
if (key == RIGHT_CHAR) // if move cursor right
{
if (index < curLen)
{
++index;
advanceCursor(1);
}
continue;
}
if (key == KILL_LINE_CHAR) // if shift-backspace
{
for (word i = 0; i < index; ++i) // back up cursor to beginning
putchar('\b');
byte finalX = textPosX, finalY = textPosY;
for (word i = 0; i < curLen; ++i) // erase entire line
putchar(' ');
moveCursor(finalX, finalY); // put cursor at beginning
index = 0;
curLen = 0;
continue;
}
if (key < ' ' || key >= 127)
continue; // ignore invalid characters
if (curLen < maxLineLength - 1) // if still room
{
moveForwardOneByte(dest + index, curLen + 1 - index); // include terminating NUL
dest[index] = key;
++curLen;
saveCursorPosition();
putstr(dest + index, curLen - index);
restoreCursorPosition();
advanceCursor(1);
++index;
}
}
removeCursor();
return key != BREAK_CHAR;
}
