void Viewport::scrollBarMoved (ScrollBar* scrollBarThatHasMoved, const double newRangeStart)
{
if (scrollBarThatHasMoved == horizontalScrollBar)
{
setViewPosition (roundToInt (newRangeStart), getViewPositionY());
}
else if (scrollBarThatHasMoved == verticalScrollBar)
{
setViewPosition (getViewPositionX(), roundToInt (newRangeStart));
}
}
void Viewport::scrollBarMoved (ScrollBar* scrollBarThatHasMoved, double newRangeStart)
{
const int newRangeStartInt = roundToInt (newRangeStart);
if (scrollBarThatHasMoved == &horizontalScrollBar)
{
setViewPosition (newRangeStartInt, getViewPositionY());
}
else if (scrollBarThatHasMoved == &verticalScrollBar)
{
setViewPosition (getViewPositionX(), newRangeStartInt);
}
}
void ChannelViewport::paintOverChildren( Graphics& g )
{
juce::Rectangle<int> shadow(getLocalBounds());
shadow.setHeight(jmin(10, getViewPositionY() - 2)); // clamps shadow pos
if (shadow.getHeight() > 0)
{
shadow.setWidth(getMaximumVisibleWidth());
ColourGradient grad(Colours::black.withAlpha(0.6f), (float)shadow.getX(), (float)shadow.getY(),
Colours::transparentBlack, (float)shadow.getX(), (float)shadow.getBottom(), false);
g.setGradientFill(grad);
g.fillRect(shadow);
}
}
void updateContents()
{
hasUpdated = true;
const int rowHeight = owner.getRowHeight();
if (rowHeight > 0)
{
const int y = getViewPositionY();
const int w = getViewedComponent()->getWidth();
const int numNeeded = 2 + getMaximumVisibleHeight() / rowHeight;
rows.removeRange (numNeeded, rows.size());
while (numNeeded > rows.size())
{
ListBoxRowComponent* newRow = new ListBoxRowComponent (owner);
rows.add (newRow);
getViewedComponent()->addAndMakeVisible (newRow);
}
firstIndex = y / rowHeight;
firstWholeIndex = (y + rowHeight - 1) / rowHeight;
lastWholeIndex = (y + getMaximumVisibleHeight() - 1) / rowHeight;
for (int i = 0; i < numNeeded; ++i)
{
const int row = i + firstIndex;
ListBoxRowComponent* const rowComp = getComponentForRow (row);
if (rowComp != nullptr)
{
rowComp->setBounds (0, row * rowHeight, w, rowHeight);
rowComp->update (row, owner.isRowSelected (row));
}
}
}
if (owner.headerComponent != nullptr)
owner.headerComponent->setBounds (owner.outlineThickness + getViewedComponent()->getX(),
owner.outlineThickness,
jmax (owner.getWidth() - owner.outlineThickness * 2,
getViewedComponent()->getWidth()),
owner.headerComponent->getHeight());
}
