void TwButton::paintBackground(TwPainter* painter)
{
TwColor fillColor;
TwColor boundColor;
if (isEnabled())
{
switch (frameState())
{
case Tw::State_Normal:
{
fillColor = backgroundColor();
boundColor = k_DefBoundColor;
}
break;
case Tw::State_Active:
{
fillColor = m_activeColor;
boundColor = m_activeColor;
boundColor.setAlpha(255);
}
break;
case Tw::State_Pressed:
{
fillColor = m_pressedColor;
boundColor = m_pressedColor;
boundColor.setAlpha(255);
}
break;
}
}
else
{
fillColor = k_DefDisableFillColor;
boundColor = k_DefBoundColor;
}
if (fillColor.alpha() != 0)
{
painter->fillRect(localRect(), fillColor);
}
if (boundColor.alpha() != 0)
{
painter->drawRect(localRect(), boundColor, 1.0f, true);
}
}
bool
SavedStacks::insertFrames(JSContext *cx, FrameIter &iter, MutableHandleSavedFrame frame,
unsigned maxFrameCount)
{
// In order to lookup a cached SavedFrame object, we need to have its parent
// SavedFrame, which means we need to walk the stack from oldest frame to
// youngest. However, FrameIter walks the stack from youngest frame to
// oldest. The solution is to append stack frames to a vector as we walk the
// stack with FrameIter, and then do a second pass through that vector in
// reverse order after the traversal has completed and get or create the
// SavedFrame objects at that time.
//
// To avoid making many copies of FrameIter (whose copy constructor is
// relatively slow), we save the subset of FrameIter's data that is relevant
// to our needs in a FrameState object, and maintain a vector of FrameState
// objects instead of a vector of FrameIter objects.
// Accumulate the vector of FrameState objects in |stackState|.
AutoFrameStateVector stackState(cx);
while (!iter.done()) {
AutoLocationValueRooter location(cx);
{
AutoCompartment ac(cx, iter.compartment());
if (!cx->compartment()->savedStacks().getLocation(cx, iter, &location))
return false;
}
{
FrameState frameState(iter);
frameState.location = location.get();
if (!stackState->append(frameState))
return false;
}
++iter;
if (maxFrameCount == 0) {
// If maxFrameCount is zero, then there's no limit on the number of
// frames.
continue;
} else if (maxFrameCount == 1) {
// Since we were only asked to save one frame, do not continue
// walking the stack and saving frame state.
break;
} else {
maxFrameCount--;
}
}
// Iterate through |stackState| in reverse order and get or create the
// actual SavedFrame instances.
RootedSavedFrame parentFrame(cx, nullptr);
for (size_t i = stackState->length(); i != 0; i--) {
SavedFrame::AutoLookupRooter lookup(cx,
stackState[i-1].location.source,
stackState[i-1].location.line,
stackState[i-1].location.column,
stackState[i-1].name,
parentFrame,
stackState[i-1].principals);
parentFrame.set(getOrCreateSavedFrame(cx, lookup));
if (!parentFrame)
return false;
}
frame.set(parentFrame);
return true;
}
