void CheckersBoard::drawBoard(){
bool indent = false;
int xStart;
// Dark wood colour //
SDL_SetRenderDrawColor( gRenderer, 0x55, 0x27, 0x00, 0xFF );
for(int y=0;y<SCREEN_HEIGHT;y+=BUTTON_HEIGHT){
if (indent) {
xStart = BUTTON_WIDTH;
indent = false;
}
else{
xStart = 0;
indent = true;
}
for(int x=xStart;x<SCREEN_WIDTH;x+=2*BUTTON_WIDTH){
SDL_Rect redRect = {x, y, BUTTON_WIDTH, BUTTON_HEIGHT};
SDL_RenderFillRect( gRenderer, &redRect);
}
}
drawHighlights();
}
void HighlightScrollBarOverlay::paintEvent(QPaintEvent *paintEvent)
{
QWidget::paintEvent(paintEvent);
updateCache();
if (m_highlightCache.isEmpty())
return;
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, false);
const QRect &gRect = overlayRect();
const QRect &hRect = handleRect();
const int marginX = 3;
const int marginH = -2 * marginX + 1;
const QRect aboveHandleRect = QRect(gRect.x() + marginX,
gRect.y(),
gRect.width() + marginH,
hRect.y() - gRect.y());
const QRect handleRect = QRect(gRect.x() + marginX,
hRect.y(),
gRect.width() + marginH,
hRect.height());
const QRect belowHandleRect = QRect(gRect.x() + marginX,
hRect.y() + hRect.height(),
gRect.width() + marginH,
gRect.height() - hRect.height() + gRect.y() - hRect.y());
const int aboveValue = m_scrollBar->value();
const int belowValue = m_scrollBar->maximum() - m_scrollBar->value();
const int sizeDocAbove = aboveValue * int(m_highlightController->lineHeight());
const int sizeDocBelow = belowValue * int(m_highlightController->lineHeight());
const int sizeDocVisible = int(m_highlightController->visibleRange());
const int scrollBarBackgroundHeight = aboveHandleRect.height() + belowHandleRect.height();
const int sizeDocInvisible = sizeDocAbove + sizeDocBelow;
const double backgroundRatio = sizeDocInvisible
? ((double)scrollBarBackgroundHeight / sizeDocInvisible) : 0;
if (aboveValue) {
drawHighlights(&painter,
0,
sizeDocAbove,
backgroundRatio,
0,
aboveHandleRect);
}
if (belowValue) {
// This is the hypothetical handle height if the handle would
// be stretched using the background ratio.
const double handleVirtualHeight = sizeDocVisible * backgroundRatio;
// Skip the doc above and visible part.
const int offset = qRound(aboveHandleRect.height() + handleVirtualHeight);
drawHighlights(&painter,
sizeDocAbove + sizeDocVisible,
sizeDocBelow,
backgroundRatio,
offset,
belowHandleRect);
}
const double handleRatio = sizeDocVisible
? ((double)handleRect.height() / sizeDocVisible) : 0;
// This is the hypothetical handle position if the background would
// be stretched using the handle ratio.
const double aboveVirtualHeight = sizeDocAbove * handleRatio;
// This is the accurate handle position (double)
const double accurateHandlePos = sizeDocAbove * backgroundRatio;
// The correction between handle position (int) and accurate position (double)
const double correction = aboveHandleRect.height() - accurateHandlePos;
// Skip the doc above and apply correction
const int offset = qRound(aboveVirtualHeight + correction);
drawHighlights(&painter,
sizeDocAbove,
sizeDocVisible,
handleRatio,
offset,
handleRect);
}