diff options
Diffstat (limited to 'indra/llui/llaccordionctrl.cpp')
| -rw-r--r-- | indra/llui/llaccordionctrl.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/indra/llui/llaccordionctrl.cpp b/indra/llui/llaccordionctrl.cpp index b5e870228a..d0c73fbfbc 100644 --- a/indra/llui/llaccordionctrl.cpp +++ b/indra/llui/llaccordionctrl.cpp @@ -63,6 +63,8 @@ static LLDefaultChildRegistry::Register<LLAccordionCtrl> t2("accordion"); LLAccordionCtrl::LLAccordionCtrl(const Params& params):LLPanel(params) , mFitParent(params.fit_parent) + , mAutoScrolling( false ) + , mAutoScrollRate( 0.f ) { mSingleExpansion = params.single_expansion; if(mFitParent && !mSingleExpansion) @@ -72,6 +74,8 @@ LLAccordionCtrl::LLAccordionCtrl(const Params& params):LLPanel(params) } LLAccordionCtrl::LLAccordionCtrl() : LLPanel() + , mAutoScrolling( false ) + , mAutoScrollRate( 0.f ) { mSingleExpansion = false; mFitParent = false; @@ -81,6 +85,19 @@ LLAccordionCtrl::LLAccordionCtrl() : LLPanel() //--------------------------------------------------------------------------------- void LLAccordionCtrl::draw() { + if (mAutoScrolling) + { + // add acceleration to autoscroll + mAutoScrollRate = llmin(mAutoScrollRate + (LLFrameTimer::getFrameDeltaTimeF32() * AUTO_SCROLL_RATE_ACCEL), MAX_AUTO_SCROLL_RATE); + } + else + { + // reset to minimum for next time + mAutoScrollRate = MIN_AUTO_SCROLL_RATE; + } + // clear this flag to be set on next call to autoScroll + mAutoScrolling = false; + LLRect local_rect(0, getRect().getHeight(), getRect().getWidth(), 0); LLLocalClipRect clip(local_rect); @@ -420,6 +437,64 @@ BOOL LLAccordionCtrl::handleKeyHere (KEY key, MASK mask) return LLPanel::handleKeyHere(key,mask); } +BOOL LLAccordionCtrl::handleDragAndDrop (S32 x, S32 y, MASK mask, + BOOL drop, + EDragAndDropType cargo_type, + void* cargo_data, + EAcceptance* accept, + std::string& tooltip_msg) +{ + // Scroll folder view if needed. Never accepts a drag or drop. + *accept = ACCEPT_NO; + BOOL handled = autoScroll(x, y); + + if( !handled ) + { + handled = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type, + cargo_data, accept, tooltip_msg) != NULL; + } + return TRUE; +} + +BOOL LLAccordionCtrl::autoScroll (S32 x, S32 y) +{ + static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0); + + bool scrolling = false; + if( mScrollbar->getVisible() ) + { + LLRect rect_local( 0, getRect().getHeight(), getRect().getWidth() - scrollbar_size, 0 ); + LLRect screen_local_extents; + + // clip rect against root view + screenRectToLocal(getRootView()->getLocalRect(), &screen_local_extents); + rect_local.intersectWith(screen_local_extents); + + // autoscroll region should take up no more than one third of visible scroller area + S32 auto_scroll_region_height = llmin(rect_local.getHeight() / 3, 10); + S32 auto_scroll_speed = llround(mAutoScrollRate * LLFrameTimer::getFrameDeltaTimeF32()); + + LLRect bottom_scroll_rect = screen_local_extents; + bottom_scroll_rect.mTop = rect_local.mBottom + auto_scroll_region_height; + if( bottom_scroll_rect.pointInRect( x, y ) && (mScrollbar->getDocPos() < mScrollbar->getDocPosMax()) ) + { + mScrollbar->setDocPos( mScrollbar->getDocPos() + auto_scroll_speed ); + mAutoScrolling = true; + scrolling = true; + } + + LLRect top_scroll_rect = screen_local_extents; + top_scroll_rect.mBottom = rect_local.mTop - auto_scroll_region_height; + if( top_scroll_rect.pointInRect( x, y ) && (mScrollbar->getDocPos() > 0) ) + { + mScrollbar->setDocPos( mScrollbar->getDocPos() - auto_scroll_speed ); + mAutoScrolling = true; + scrolling = true; + } + } + return scrolling; +} + void LLAccordionCtrl::updateLayout (S32 width, S32 height) { S32 panel_top = height - BORDER_MARGIN ; |