int main(void)
{
int index;
char* inputString;
char* target;
inputString = malloc(sizeof(char)*50);
printf("Enter a string: ");
scanf("%s", inputString);
printf("You typed: \'%s\'\n", inputString);
printf("Enter an index: ");
scanf("%d", &index);
printf("The index entered is: %d\n", index);
target = getCharAtIndex(inputString, index);
printf("The memory address pointed at by target is: %p\n", target);
printf("The address of target is: %p\n", &target);
printf("The character that is pointed at by target is: %c\n", *target);
return 0;
}
void XlinkPreview::tileUpdated(int tileIndex)
{
if(!isConnected()) return;
auto state = State::getInstance();
State::TileProperties properties = state->getTileProperties();
int charIndex = state->getCharIndexFromTileIndex(tileIndex);
int numChars = properties.size.width() * properties.size.height();
if(properties.interleaved == 1) {
xlink_load(0xb7, 0x00, 0x3000 + charIndex * 8, (uchar*) state->getCharAtIndex(charIndex), numChars*8);
}
else {
for(int sent=0; sent<numChars; sent++) {
xlink_load(0xb7, 0x00, 0x3000 + charIndex * 8, (uchar*) state->getCharAtIndex(charIndex), 8);
charIndex += properties.interleaved;
}
}
}
void CharsetWidget::paintEvent(QPaintEvent *event)
{
QPainter painter;
painter.begin(this);
painter.fillRect(event->rect(), QWidget::palette().color(QWidget::backgroundRole()));
painter.setBrush(QColor(0,0,0));
painter.setPen(Qt::NoPen);
auto state = State::getInstance();
int end_x = 8;
int pixel_size_x = _pixelSize.width();
int increment_x = 1;
int bits_to_mask = 1;
if (state->shouldBeDisplayedInMulticolor())
{
end_x = 4;
pixel_size_x = _pixelSize.width() * 2;
increment_x = 2;
bits_to_mask = 3;
}
QPen pen;
pen.setColor({149,195,244,255});
if (hasFocus())
pen.setWidth(3);
else
pen.setWidth(1);
pen.setStyle(Qt::PenStyle::SolidLine);
for (int w=0; w<COLUMNS; w++) {
for (int h=0; h<ROWS; h++) {
int index = w + h * COLUMNS;
quint8* charPtr = state->getCharAtIndex(index);
for (int y=0; y<8; y++) {
char letter = charPtr[y];
for (int x=0; x<end_x; x++) {
// Warning: Don't use 'char'. Instead use 'unsigned char'.
// 'char' doesn't work Ok with << and >>
// only mask the bits are needed
unsigned char mask = bits_to_mask << (((end_x-1)-x) * increment_x);
unsigned char color = letter & mask;
// now transform those bits into values from 0-3 since those are the
// possible colors
int bits_to_shift = (((end_x-1)-x) * increment_x);
int color_pen = color >> bits_to_shift;
if (!state->shouldBeDisplayedInMulticolor() && color_pen )
color_pen = State::PEN_FOREGROUND;
painter.setBrush(Palette::getColorForPen(color_pen));
painter.drawRect((w*end_x+x) * pixel_size_x + OFFSET,
(h*8+y) * _pixelSize.height() + OFFSET,
pixel_size_x,
_pixelSize.height());
}
}
painter.setPen(Qt::NoPen);
}
}
if (_selecting) {
pen.setColor({149,195,244,255});
painter.setPen(pen);
painter.setBrush(QColor(149,195,244,64));
painter.drawRect(_cursorPos.x() * 8 * _pixelSize.width() + OFFSET,
_cursorPos.y() * 8 * _pixelSize.height() + OFFSET,
_selectingSize.width() * 8 * _pixelSize.width(),
_selectingSize.height() * 8 * _pixelSize.height());
}
else
{
pen.setColor({149,195,244,255});
painter.setPen(pen);
painter.setBrush(QColor(128,0,0,0));
painter.drawRect(_cursorPos.x() * 8 * _pixelSize.width() + OFFSET,
_cursorPos.y() * 8 * _pixelSize.height() + OFFSET,
8 * _pixelSize.width(),
8 * _pixelSize.height());
}
paintFocus(painter);
painter.end();
}
