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QuickToolBar: refine gradient editing

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This patch solves minor usablity issues
in the gradient editing.

Reviewed-by: Lasse Holmstedt
This commit is contained in:
Thomas Hartmann
2010-11-10 11:34:26 +01:00
parent 563b8dc7bf
commit e3eaa2e477
1 changed files with 39 additions and 28 deletions
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67
src/libs/qmleditorwidgets/gradientline.cpp
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@@ -193,6 +193,8 @@ void GradientLine::paintEvent(QPaintEvent *event)
int pos = qreal((width() - 16)) * m_stops.at(i) + 9;
p.setBrush(arrowColor);
QVector<QPointF> points;
if (localYOffset < -8)
p.setOpacity(0.5);
points.append(QPointF(pos + 0.5, 28.5 + localYOffset)); //triangle
points.append(QPointF(pos - 3.5, 22.5 + localYOffset));
points.append(QPointF(pos + 4.5, 22.5 + localYOffset));
@@ -210,6 +212,7 @@ void GradientLine::paintEvent(QPaintEvent *event)
p.setBrush(Qt::NoBrush);
p.setPen(QColor(255, 255, 255, 30));
p.drawRect(pos - 4, 9 + localYOffset, 8, 9);
p.setOpacity(1);
}
}
}
@@ -220,6 +223,7 @@ void GradientLine::mousePressEvent(QMouseEvent *event)
event->accept();
int xPos = event->pos().x();
int yPos = event->pos().y();
m_dragStart = event->pos();
int draggedIndex = -1;
m_create = false;
@@ -227,10 +231,9 @@ void GradientLine::mousePressEvent(QMouseEvent *event)
if ((yPos > 10) && (yPos < 30))
for (int i =0; i < m_stops.size(); i++) {
int pos = qreal((width() - 16)) * m_stops.at(i) + 9;
if (((xPos + 5) > pos) && ((xPos - 5) < pos)) {
if (((xPos + 8) > pos) && ((xPos - 8) < pos)) {
draggedIndex = i;
m_dragActive = true;
m_dragStart = event->pos();
setCurrentIndex(draggedIndex);
update();
}
@@ -253,6 +256,22 @@ void GradientLine::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton) {
event->accept();
if (m_dragActive) {
m_yOffset += event->pos().y() - 14;
if (m_yOffset > 0) {
m_yOffset = 0;
} else if ((m_yOffset < - 8) && (currentColorIndex()) != 0 && (currentColorIndex() < m_stops.size() - 1)) {
m_yOffset = 0;
m_dragActive = false;
m_stops.removeAt(currentColorIndex());
m_colorList.removeAt(currentColorIndex());
updateGradient();
setCurrentIndex(0);
//delete item
}
}
if (m_dragActive == false && m_create) {
qreal stopPos = qreal(event->pos().x() - 9) / qreal((width() - 15));
int index = -1;
@@ -260,7 +279,7 @@ void GradientLine::mouseReleaseEvent(QMouseEvent *event)
if ((stopPos > m_stops.at(i)) && (index == -1))
index = i +1;
}
if (index != -1 && (m_useGradient)) { //creating of items only in base state
if (index != -1 && (m_useGradient) && abs(m_dragStart.x() - event->pos().x()) < 10) { //creating of items only in base state
m_stops.insert(index, stopPos);
m_colorList.insert(index, QColor(Qt::white));
setCurrentIndex(index);
@@ -278,32 +297,24 @@ void GradientLine::mouseMoveEvent(QMouseEvent *event)
{
if (m_dragActive) {
event->accept();
int xPos = event->pos().x();
int pos = qreal((width() - 20)) * m_stops.at(currentColorIndex()) + 8;
int offset = m_dragOff ? 2 : 20;
if (xPos < pos + offset && xPos > pos - offset) {
m_dragOff = false;
int xDistance = event->pos().x() - m_dragStart.x();
qreal distance = qreal(xDistance) / qreal((width() - 20));
qreal newStop = m_stops.at(currentColorIndex()) + distance;
if ((newStop >=0) && (newStop <= 1))
m_stops[currentColorIndex()] = newStop;
m_yOffset += event->pos().y() - m_dragStart.y();
if (m_yOffset > 0) { //deleting only in base state
m_yOffset = 0;
} else if ((m_yOffset < - 12) && (currentColorIndex()) != 0 && (currentColorIndex() < m_stops.size() - 1)) {
m_yOffset = 0;
m_dragActive = false;
m_stops.removeAt(currentColorIndex());
m_colorList.removeAt(currentColorIndex());
updateGradient();
setCurrentIndex(0);
//delete item
}
} else {
m_dragOff = true;
}
m_dragStart = event->pos();
m_dragOff = false;
int xDistance = event->pos().x() - pos;
qreal distance = qreal(xDistance) / qreal((width() - 20));
qreal newStopPosition = m_stops.at(currentColorIndex()) + distance;
if (newStopPosition > 0.98) //snap to 1
newStopPosition = 1;
if (newStopPosition < 0.02) //snap to 0
newStopPosition = 0;
if ((newStopPosition >=0) && (newStopPosition <= 1))
m_stops[currentColorIndex()] = newStopPosition;
m_yOffset += event->pos().y() - 14;
if (m_yOffset > 0)
m_yOffset = 0;
else if ((m_yOffset < - 10))
m_yOffset = -10;
update();
}
}