diff options
Diffstat (limited to 'src/gui/painting/qcosmeticstroker.cpp')
| -rw-r--r-- | src/gui/painting/qcosmeticstroker.cpp | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/src/gui/painting/qcosmeticstroker.cpp b/src/gui/painting/qcosmeticstroker.cpp index dbe957e68d..3528e6f215 100644 --- a/src/gui/painting/qcosmeticstroker.cpp +++ b/src/gui/painting/qcosmeticstroker.cpp @@ -425,13 +425,12 @@ void QCosmeticStroker::calculateLastPoint(qreal rx1, qreal ry1, qreal rx2, qreal swapped = true; qSwap(y1, y2); qSwap(x1, x2); - --x1; --x2; --y1; --y2; } int xinc = F16Dot16FixedDiv(x2 - x1, y2 - y1); int x = x1 << 10; - int y = (y1+32) >> 6; - int ys = (y2+32) >> 6; + int y = y1 >> 6; + int ys = y2 >> 6; if (y != ys) { x += ( ((((y << 6) + 32 - y1))) * xinc ) >> 6; @@ -457,13 +456,12 @@ void QCosmeticStroker::calculateLastPoint(qreal rx1, qreal ry1, qreal rx2, qreal swapped = true; qSwap(x1, x2); qSwap(y1, y2); - --x1; --x2; --y1; --y2; } int yinc = F16Dot16FixedDiv(y2 - y1, x2 - x1); int y = y1 << 10; - int x = (x1+32) >> 6; - int xs = (x2+32) >> 6; + int x = x1 >> 6; + int xs = x2 >> 6; if (x != xs) { y += ( ((((x << 6) + 32 - x1))) * yinc ) >> 6; @@ -716,10 +714,11 @@ static void drawLine(QCosmeticStroker *stroker, qreal rx1, qreal ry1, qreal rx2, QCosmeticStroker::Point last = stroker->lastPixel; -// qDebug() << "stroke" << x1/64. << y1/64. << x2/64. << y2/64. << capString(caps); +// qDebug() << "stroke" << x1/64. << y1/64. << x2/64. << y2/64.; if (dx < dy) { // vertical + QCosmeticStroker::Direction dir = QCosmeticStroker::TopToBottom; bool swapped = false; if (y1 > y2) { @@ -727,30 +726,31 @@ static void drawLine(QCosmeticStroker *stroker, qreal rx1, qreal ry1, qreal rx2, qSwap(y1, y2); qSwap(x1, x2); caps = swapCaps(caps); - --x1; --x2; --y1; --y2; + dir = QCosmeticStroker::BottomToTop; } int xinc = F16Dot16FixedDiv(x2 - x1, y2 - y1); int x = x1 << 10; + if ((stroker->lastDir ^ QCosmeticStroker::VerticalMask) == dir) + caps |= swapped ? QCosmeticStroker::CapEnd : QCosmeticStroker::CapBegin; + capAdjust(caps, y1, y2, x, xinc); - int y = (y1+32) >> 6; - int ys = (y2+32) >> 6; + int y = y1 >> 6; + int ys = y2 >> 6; if (y != ys) { x += ( ((((y << 6) + 32 - y1))) * xinc ) >> 6; // calculate first and last pixel and perform dropout control - QCosmeticStroker::Direction dir = QCosmeticStroker::TopToBottom; QCosmeticStroker::Point first; first.x = x >> 16; first.y = y; last.x = (x + (ys - y - 1)*xinc) >> 16; last.y = ys - 1; - if (swapped) { + if (swapped) qSwap(first, last); - dir = QCosmeticStroker::BottomToTop; - } + bool axisAligned = qAbs(xinc) < (1 << 14); if (stroker->lastPixel.x >= 0) { if (first.x == stroker->lastPixel.x && @@ -765,7 +765,7 @@ static void drawLine(QCosmeticStroker *stroker, qreal rx1, qreal ry1, qreal rx2, } else if (stroker->lastDir != dir && (((axisAligned && stroker->lastAxisAligned) && stroker->lastPixel.x != first.x && stroker->lastPixel.y != first.y) || - (qAbs(stroker->lastPixel.x - first.x) > 1 && + (qAbs(stroker->lastPixel.x - first.x) > 1 || qAbs(stroker->lastPixel.y - first.y) > 1))) { // have a missing pixel, insert it if (swapped) { @@ -793,37 +793,39 @@ static void drawLine(QCosmeticStroker *stroker, qreal rx1, qreal ry1, qreal rx2, if (!dx) return; + QCosmeticStroker::Direction dir = QCosmeticStroker::LeftToRight; + bool swapped = false; if (x1 > x2) { swapped = true; qSwap(x1, x2); qSwap(y1, y2); caps = swapCaps(caps); - --x1; --x2; --y1; --y2; + dir = QCosmeticStroker::RightToLeft; } int yinc = F16Dot16FixedDiv(y2 - y1, x2 - x1); int y = y1 << 10; - capAdjust(caps, x1, x2, y, yinc); + if ((stroker->lastDir ^ QCosmeticStroker::HorizontalMask) == dir) + caps |= swapped ? QCosmeticStroker::CapEnd : QCosmeticStroker::CapBegin; - int x = (x1+32) >> 6; - int xs = (x2+32) >> 6; + capAdjust(caps, x1, x2, y, yinc); + int x = x1 >> 6; + int xs = x2 >> 6; if (x != xs) { y += ( ((((x << 6) + 32 - x1))) * yinc ) >> 6; // calculate first and last pixel to perform dropout control - QCosmeticStroker::Direction dir = QCosmeticStroker::LeftToRight; QCosmeticStroker::Point first; first.x = x; first.y = y >> 16; last.x = xs - 1; last.y = (y + (xs - x - 1)*yinc) >> 16; - if (swapped) { + if (swapped) qSwap(first, last); - dir = QCosmeticStroker::RightToLeft; - } + bool axisAligned = qAbs(yinc) < (1 << 14); if (stroker->lastPixel.x >= 0) { if (first.x == stroker->lastPixel.x && first.y == stroker->lastPixel.y) { @@ -837,7 +839,7 @@ static void drawLine(QCosmeticStroker *stroker, qreal rx1, qreal ry1, qreal rx2, } else if (stroker->lastDir != dir && (((axisAligned && stroker->lastAxisAligned) && stroker->lastPixel.x != first.x && stroker->lastPixel.y != first.y) || - (qAbs(stroker->lastPixel.x - first.x) > 1 && + (qAbs(stroker->lastPixel.x - first.x) > 1 || qAbs(stroker->lastPixel.y - first.y) > 1))) { // have a missing pixel, insert it if (swapped) { |