bool
TouchBlockState::UpdateSlopState(const MultiTouchInput& aInput,
bool aApzcCanConsumeEvents)
{
if (aInput.mType == MultiTouchInput::MULTITOUCH_START) {
// this is by definition the first event in this block. If it's the first
// touch, then we enter a slop state.
mInSlop = (aInput.mTouches.Length() == 1);
if (mInSlop) {
mSlopOrigin = aInput.mTouches[0].mScreenPoint;
TBS_LOG("%p entering slop with origin %s\n", this, Stringify(mSlopOrigin).c_str());
}
return false;
}
if (mInSlop) {
ScreenCoord threshold = aApzcCanConsumeEvents
? AsyncPanZoomController::GetTouchStartTolerance()
: ScreenCoord(gfxPrefs::APZTouchMoveTolerance() * APZCTreeManager::GetDPI());
bool stayInSlop = (aInput.mType == MultiTouchInput::MULTITOUCH_MOVE) &&
(aInput.mTouches.Length() == 1) &&
((aInput.mTouches[0].mScreenPoint - mSlopOrigin).Length() < threshold);
if (!stayInSlop) {
// we're out of the slop zone, and will stay out for the remainder of
// this block
TBS_LOG("%p exiting slop\n", this);
mInSlop = false;
}
}
return mInSlop;
}
void Button::setPosition(u16 x, u16 y)
{
Clickable::setPosition(x, y);
/* update label position if it was present */
//TODO: verify offset fomula which is not precise
if (labelGfx.isPresent())
labelGfx->position = ScreenCoord(x + gfx.normal->sw()/2, y + gfx.normal->sh()/2 - labelGfx->font->sh()/2);
}
ScreenCoord Viewport::screenCoordsForTile(const LocalPlayer* player, Position p)
{
if (!isOutsideViewport(player, p.x, p.y))
{
const Position v = player->getViewport();
s16 dx = p.x - (v.x - viewportW/2);
s16 dy = p.y - (v.y - viewportH/2);
return ScreenCoord(baseX + dx*tileWidth, baseY + dy*tileHeight);
}
return ScreenCoord::INVALID;
}