bool Viewport::useMouseWheelMoveIfNeeded (const MouseEvent& e, const MouseWheelDetails& wheel)
{
if (! (e.mods.isAltDown() || e.mods.isCtrlDown() || e.mods.isCommandDown()))
{
const bool canScrollVert = (allowScrollingWithoutScrollbarV || verticalScrollBar.isVisible());
const bool canScrollHorz = (allowScrollingWithoutScrollbarH || horizontalScrollBar.isVisible());
if (canScrollHorz || canScrollVert)
{
const int deltaX = rescaleMouseWheelDistance (wheel.deltaX, singleStepX);
const int deltaY = rescaleMouseWheelDistance (wheel.deltaY, singleStepY);
Point<int> pos (getViewPosition());
if (deltaX != 0 && deltaY != 0 && canScrollHorz && canScrollVert)
{
pos.x -= deltaX;
pos.y -= deltaY;
}
else if (canScrollHorz && (deltaX != 0 || e.mods.isShiftDown() || ! canScrollVert))
{
pos.x -= deltaX != 0 ? deltaX : deltaY;
}
else if (canScrollVert && deltaY != 0)
{
pos.y -= deltaY;
}
if (pos != getViewPosition())
{
if (mouseWheelTimer == nullptr)
mouseWheelTimer = new MouseWheelTimer (*this);
mouseWheelTimer->startTimer (300);
setViewPosition (pos);
return true;
}
}
}
return false;
}
bool Viewport::useMouseWheelMoveIfNeeded (const MouseEvent& e, const MouseWheelDetails& wheel)
{
if (! (e.mods.isAltDown() || e.mods.isCtrlDown() || e.mods.isCommandDown()))
{
const bool canScrollVert = (allowScrollingWithoutScrollbarV || getVerticalScrollBar().isVisible());
const bool canScrollHorz = (allowScrollingWithoutScrollbarH || getHorizontalScrollBar().isVisible());
if (canScrollHorz || canScrollVert)
{
auto deltaX = rescaleMouseWheelDistance (wheel.deltaX, singleStepX);
auto deltaY = rescaleMouseWheelDistance (wheel.deltaY, singleStepY);
auto pos = getViewPosition();
if (deltaX != 0 && deltaY != 0 && canScrollHorz && canScrollVert)
{
pos.x -= deltaX;
pos.y -= deltaY;
}
else if (canScrollHorz && (deltaX != 0 || e.mods.isShiftDown() || ! canScrollVert))
{
pos.x -= deltaX != 0 ? deltaX : deltaY;
}
else if (canScrollVert && deltaY != 0)
{
pos.y -= deltaY;
}
if (pos != getViewPosition())
{
setViewPosition (pos);
return true;
}
}
}
return false;
}
