llscrollcontainer.cpp
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- /**
- * @file llscrollcontainer.cpp
- * @brief LLScrollContainer base class
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- #include "llscrollcontainer.h"
- #include "llrender.h"
- #include "llcontainerview.h"
- #include "lllocalcliprect.h"
- // #include "llfolderview.h"
- #include "llscrollingpanellist.h"
- #include "llscrollbar.h"
- #include "llui.h"
- #include "llkeyboard.h"
- #include "llviewborder.h"
- #include "llfocusmgr.h"
- #include "llframetimer.h"
- #include "lluictrlfactory.h"
- #include "llpanel.h"
- #include "llfontgl.h"
- ///----------------------------------------------------------------------------
- /// Local function declarations, constants, enums, and typedefs
- ///----------------------------------------------------------------------------
- static const S32 HORIZONTAL_MULTIPLE = 8;
- static const S32 VERTICAL_MULTIPLE = 16;
- static const F32 AUTO_SCROLL_RATE_ACCEL = 120.f;
- ///----------------------------------------------------------------------------
- /// Class LLScrollContainer
- ///----------------------------------------------------------------------------
- static LLDefaultChildRegistry::Register<LLScrollContainer> r("scroll_container");
- #include "llscrollingpanellist.h"
- #include "llcontainerview.h"
- #include "llpanel.h"
- static ScrollContainerRegistry::Register<LLScrollingPanelList> r1("scrolling_panel_list");
- static ScrollContainerRegistry::Register<LLContainerView> r2("container_view");
- static ScrollContainerRegistry::Register<LLPanel> r3("panel", &LLPanel::fromXML);
- LLScrollContainer::Params::Params()
- : is_opaque("opaque"),
- bg_color("color"),
- border_visible("border_visible"),
- hide_scrollbar("hide_scrollbar"),
- min_auto_scroll_rate("min_auto_scroll_rate", 100),
- max_auto_scroll_rate("max_auto_scroll_rate", 1000),
- reserve_scroll_corner("reserve_scroll_corner", false)
- {
- name = "scroll_container";
- mouse_opaque(true);
- tab_stop(false);
- }
- // Default constructor
- LLScrollContainer::LLScrollContainer(const LLScrollContainer::Params& p)
- : LLUICtrl(p),
- mAutoScrolling( FALSE ),
- mAutoScrollRate( 0.f ),
- mBackgroundColor(p.bg_color()),
- mIsOpaque(p.is_opaque),
- mHideScrollbar(p.hide_scrollbar),
- mReserveScrollCorner(p.reserve_scroll_corner),
- mMinAutoScrollRate(p.min_auto_scroll_rate),
- mMaxAutoScrollRate(p.max_auto_scroll_rate),
- mScrolledView(NULL)
- {
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- LLRect border_rect( 0, getRect().getHeight(), getRect().getWidth(), 0 );
- LLViewBorder::Params params;
- params.name("scroll border");
- params.rect(border_rect);
- params.visible(p.border_visible);
- params.bevel_style(LLViewBorder::BEVEL_IN);
- mBorder = LLUICtrlFactory::create<LLViewBorder> (params);
- LLView::addChild( mBorder );
- mInnerRect.set( 0, getRect().getHeight(), getRect().getWidth(), 0 );
- mInnerRect.stretch( -getBorderWidth() );
- LLRect vertical_scroll_rect = mInnerRect;
- vertical_scroll_rect.mLeft = vertical_scroll_rect.mRight - scrollbar_size;
- LLScrollbar::Params sbparams;
- sbparams.name("scrollable vertical");
- sbparams.rect(vertical_scroll_rect);
- sbparams.orientation(LLScrollbar::VERTICAL);
- sbparams.doc_size(mInnerRect.getHeight());
- sbparams.doc_pos(0);
- sbparams.page_size(mInnerRect.getHeight());
- sbparams.step_size(VERTICAL_MULTIPLE);
- sbparams.follows.flags(FOLLOWS_RIGHT | FOLLOWS_TOP | FOLLOWS_BOTTOM);
- sbparams.visible(false);
- sbparams.change_callback(p.scroll_callback);
- mScrollbar[VERTICAL] = LLUICtrlFactory::create<LLScrollbar> (sbparams);
- LLView::addChild( mScrollbar[VERTICAL] );
- LLRect horizontal_scroll_rect = mInnerRect;
- horizontal_scroll_rect.mTop = horizontal_scroll_rect.mBottom + scrollbar_size;
- sbparams.name("scrollable horizontal");
- sbparams.rect(horizontal_scroll_rect);
- sbparams.orientation(LLScrollbar::HORIZONTAL);
- sbparams.doc_size(mInnerRect.getWidth());
- sbparams.doc_pos(0);
- sbparams.page_size(mInnerRect.getWidth());
- sbparams.step_size(VERTICAL_MULTIPLE);
- sbparams.visible(false);
- sbparams.follows.flags(FOLLOWS_LEFT | FOLLOWS_RIGHT);
- sbparams.change_callback(p.scroll_callback);
- mScrollbar[HORIZONTAL] = LLUICtrlFactory::create<LLScrollbar> (sbparams);
- LLView::addChild( mScrollbar[HORIZONTAL] );
- }
- // Destroys the object
- LLScrollContainer::~LLScrollContainer( void )
- {
- // mScrolledView and mScrollbar are child views, so the LLView
- // destructor takes care of memory deallocation.
- for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
- {
- mScrollbar[i] = NULL;
- }
- mScrolledView = NULL;
- }
- // internal scrollbar handlers
- // virtual
- void LLScrollContainer::scrollHorizontal( S32 new_pos )
- {
- //llinfos << "LLScrollContainer::scrollHorizontal()" << llendl;
- if( mScrolledView )
- {
- LLRect doc_rect = mScrolledView->getRect();
- S32 old_pos = -(doc_rect.mLeft - mInnerRect.mLeft);
- mScrolledView->translate( -(new_pos - old_pos), 0 );
- }
- }
- // virtual
- void LLScrollContainer::scrollVertical( S32 new_pos )
- {
- // llinfos << "LLScrollContainer::scrollVertical() " << new_pos << llendl;
- if( mScrolledView )
- {
- LLRect doc_rect = mScrolledView->getRect();
- S32 old_pos = doc_rect.mTop - mInnerRect.mTop;
- mScrolledView->translate( 0, new_pos - old_pos );
- }
- }
- // LLView functionality
- void LLScrollContainer::reshape(S32 width, S32 height,
- BOOL called_from_parent)
- {
- LLUICtrl::reshape( width, height, called_from_parent );
- mInnerRect = getLocalRect();
- mInnerRect.stretch( -getBorderWidth() );
- if (mScrolledView)
- {
- const LLRect& scrolled_rect = mScrolledView->getRect();
- S32 visible_width = 0;
- S32 visible_height = 0;
- BOOL show_v_scrollbar = FALSE;
- BOOL show_h_scrollbar = FALSE;
- calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
- mScrollbar[VERTICAL]->setDocSize( scrolled_rect.getHeight() );
- mScrollbar[VERTICAL]->setPageSize( visible_height );
- mScrollbar[HORIZONTAL]->setDocSize( scrolled_rect.getWidth() );
- mScrollbar[HORIZONTAL]->setPageSize( visible_width );
- updateScroll();
- }
- }
- BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
- {
- // allow scrolled view to handle keystrokes in case it delegated keyboard focus
- // to the scroll container.
- // NOTE: this should not recurse indefinitely as handleKeyHere
- // should not propagate to parent controls, so mScrolledView should *not*
- // call LLScrollContainer::handleKeyHere in turn
- if (mScrolledView && mScrolledView->handleKeyHere(key, mask))
- {
- return TRUE;
- }
- for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
- {
- if( mScrollbar[i]->handleKeyHere(key, mask) )
- {
- updateScroll();
- return TRUE;
- }
- }
- return FALSE;
- }
- BOOL LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
- {
- // Give event to my child views - they may have scroll bars
- // (Bad UI design, but technically possible.)
- if (LLUICtrl::handleScrollWheel(x,y,clicks))
- return TRUE;
- // When the vertical scrollbar is visible, scroll wheel
- // only affects vertical scrolling. It's confusing to have
- // scroll wheel perform both vertical and horizontal in a
- // single container.
- LLScrollbar* vertical = mScrollbar[VERTICAL];
- if (vertical->getVisible()
- && vertical->getEnabled())
- {
- // Pretend the mouse is over the scrollbar
- if (vertical->handleScrollWheel( 0, 0, clicks ) )
- {
- updateScroll();
- }
- // Always eat the event
- return TRUE;
- }
- LLScrollbar* horizontal = mScrollbar[HORIZONTAL];
- // Test enablement and visibility for consistency with
- // LLView::childrenHandleScrollWheel().
- if (horizontal->getVisible()
- && horizontal->getEnabled()
- && horizontal->handleScrollWheel( 0, 0, clicks ) )
- {
- updateScroll();
- return TRUE;
- }
- return FALSE;
- }
- BOOL LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
- BOOL drop,
- EDragAndDropType cargo_type,
- void* cargo_data,
- EAcceptance* accept,
- std::string& tooltip_msg)
- {
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- // 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 LLScrollContainer::autoScroll(S32 x, S32 y)
- {
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- bool scrolling = false;
- if( mScrollbar[HORIZONTAL]->getVisible() || mScrollbar[VERTICAL]->getVisible() )
- {
- LLRect screen_local_extents;
- screenRectToLocal(getRootView()->getLocalRect(), &screen_local_extents);
- LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
- if( mScrollbar[HORIZONTAL]->getVisible() )
- {
- inner_rect_local.mBottom += scrollbar_size;
- }
- if( mScrollbar[VERTICAL]->getVisible() )
- {
- inner_rect_local.mRight -= scrollbar_size;
- }
- // clip rect against root view
- inner_rect_local.intersectWith(screen_local_extents);
- S32 auto_scroll_speed = llround(mAutoScrollRate * LLFrameTimer::getFrameDeltaTimeF32());
- // autoscroll region should take up no more than one third of visible scroller area
- S32 auto_scroll_region_width = llmin(inner_rect_local.getWidth() / 3, 10);
- S32 auto_scroll_region_height = llmin(inner_rect_local.getHeight() / 3, 10);
- if( mScrollbar[HORIZONTAL]->getVisible() )
- {
- LLRect left_scroll_rect = screen_local_extents;
- left_scroll_rect.mRight = inner_rect_local.mLeft + auto_scroll_region_width;
- if( left_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() > 0) )
- {
- mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() - auto_scroll_speed );
- mAutoScrolling = TRUE;
- scrolling = true;
- }
- LLRect right_scroll_rect = screen_local_extents;
- right_scroll_rect.mLeft = inner_rect_local.mRight - auto_scroll_region_width;
- if( right_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() < mScrollbar[HORIZONTAL]->getDocPosMax()) )
- {
- mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() + auto_scroll_speed );
- mAutoScrolling = TRUE;
- scrolling = true;
- }
- }
- if( mScrollbar[VERTICAL]->getVisible() )
- {
- LLRect bottom_scroll_rect = screen_local_extents;
- bottom_scroll_rect.mTop = inner_rect_local.mBottom + auto_scroll_region_height;
- if( bottom_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() < mScrollbar[VERTICAL]->getDocPosMax()) )
- {
- mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() + auto_scroll_speed );
- mAutoScrolling = TRUE;
- scrolling = true;
- }
- LLRect top_scroll_rect = screen_local_extents;
- top_scroll_rect.mBottom = inner_rect_local.mTop - auto_scroll_region_height;
- if( top_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() > 0) )
- {
- mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() - auto_scroll_speed );
- mAutoScrolling = TRUE;
- scrolling = true;
- }
- }
- }
- return scrolling;
- }
- void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const
- {
- const LLRect& doc_rect = getScrolledViewRect();
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- S32 doc_width = doc_rect.getWidth();
- S32 doc_height = doc_rect.getHeight();
- S32 border_width = getBorderWidth();
- *visible_width = getRect().getWidth() - 2 * border_width;
- *visible_height = getRect().getHeight() - 2 * border_width;
- *show_v_scrollbar = FALSE;
- *show_h_scrollbar = FALSE;
- if (!mHideScrollbar)
- {
- if( *visible_height < doc_height )
- {
- *show_v_scrollbar = TRUE;
- *visible_width -= scrollbar_size;
- }
- if( *visible_width < doc_width )
- {
- *show_h_scrollbar = TRUE;
- *visible_height -= scrollbar_size;
- // Must retest now that visible_height has changed
- if( !*show_v_scrollbar && (*visible_height < doc_height) )
- {
- *show_v_scrollbar = TRUE;
- *visible_width -= scrollbar_size;
- }
- }
- }
- }
- void LLScrollContainer::draw()
- {
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- if (mAutoScrolling)
- {
- // add acceleration to autoscroll
- mAutoScrollRate = llmin(mAutoScrollRate + (LLFrameTimer::getFrameDeltaTimeF32() * AUTO_SCROLL_RATE_ACCEL), mMaxAutoScrollRate);
- }
- else
- {
- // reset to minimum for next time
- mAutoScrollRate = mMinAutoScrollRate;
- }
- // clear this flag to be set on next call to autoScroll
- mAutoScrolling = FALSE;
- // auto-focus when scrollbar active
- // this allows us to capture user intent (i.e. stop automatically scrolling the view/etc)
- if (!hasFocus()
- && (mScrollbar[VERTICAL]->hasMouseCapture() || mScrollbar[HORIZONTAL]->hasMouseCapture()))
- {
- focusFirstItem();
- }
- // Draw background
- if( mIsOpaque )
- {
- gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
- gGL.color4fv( mBackgroundColor.get().mV );
- gl_rect_2d( mInnerRect );
- }
- // Draw mScrolledViews and update scroll bars.
- // get a scissor region ready, and draw the scrolling view. The
- // scissor region ensures that we don't draw outside of the bounds
- // of the rectangle.
- if( mScrolledView )
- {
- updateScroll();
- // Draw the scrolled area.
- {
- S32 visible_width = 0;
- S32 visible_height = 0;
- BOOL show_v_scrollbar = FALSE;
- BOOL show_h_scrollbar = FALSE;
- calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
- LLLocalClipRect clip(LLRect(mInnerRect.mLeft,
- mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0) + visible_height,
- mInnerRect.mRight - (show_v_scrollbar ? scrollbar_size: 0),
- mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0)
- ));
- drawChild(mScrolledView);
- }
- }
- // Highlight border if a child of this container has keyboard focus
- if( mBorder->getVisible() )
- {
- mBorder->setKeyboardFocusHighlight( gFocusMgr.childHasKeyboardFocus(this) );
- }
- // Draw all children except mScrolledView
- // Note: scrollbars have been adjusted by above drawing code
- for (child_list_const_reverse_iter_t child_iter = getChildList()->rbegin();
- child_iter != getChildList()->rend(); ++child_iter)
- {
- LLView *viewp = *child_iter;
- if( sDebugRects )
- {
- sDepth++;
- }
- if( (viewp != mScrolledView) && viewp->getVisible() )
- {
- drawChild(viewp);
- }
- if( sDebugRects )
- {
- sDepth--;
- }
- }
- } // end draw
- bool LLScrollContainer::addChild(LLView* view, S32 tab_group)
- {
- if (!mScrolledView)
- {
- // Use the first panel or container as the scrollable view (bit of a hack)
- mScrolledView = view;
- }
- bool ret_val = LLView::addChild(view, tab_group);
- //bring the scrollbars to the front
- sendChildToFront( mScrollbar[HORIZONTAL] );
- sendChildToFront( mScrollbar[VERTICAL] );
- return ret_val;
- }
- void LLScrollContainer::updateScroll()
- {
- if (!mScrolledView)
- {
- return;
- }
- static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
- LLRect doc_rect = mScrolledView->getRect();
- S32 doc_width = doc_rect.getWidth();
- S32 doc_height = doc_rect.getHeight();
- S32 visible_width = 0;
- S32 visible_height = 0;
- BOOL show_v_scrollbar = FALSE;
- BOOL show_h_scrollbar = FALSE;
- calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
- S32 border_width = getBorderWidth();
- if( show_v_scrollbar )
- {
- if( doc_rect.mTop < getRect().getHeight() - border_width )
- {
- mScrolledView->translate( 0, getRect().getHeight() - border_width - doc_rect.mTop );
- }
- scrollVertical( mScrollbar[VERTICAL]->getDocPos() );
- mScrollbar[VERTICAL]->setVisible( TRUE );
- S32 v_scrollbar_height = visible_height;
- if( !show_h_scrollbar && mReserveScrollCorner )
- {
- v_scrollbar_height -= scrollbar_size;
- }
- mScrollbar[VERTICAL]->reshape( scrollbar_size, v_scrollbar_height, TRUE );
- // Make room for the horizontal scrollbar (or not)
- S32 v_scrollbar_offset = 0;
- if( show_h_scrollbar || mReserveScrollCorner )
- {
- v_scrollbar_offset = scrollbar_size;
- }
- LLRect r = mScrollbar[VERTICAL]->getRect();
- r.translate( 0, mInnerRect.mBottom - r.mBottom + v_scrollbar_offset );
- mScrollbar[VERTICAL]->setRect( r );
- }
- else
- {
- mScrolledView->translate( 0, getRect().getHeight() - border_width - doc_rect.mTop );
- mScrollbar[VERTICAL]->setVisible( FALSE );
- mScrollbar[VERTICAL]->setDocPos( 0 );
- }
- if( show_h_scrollbar )
- {
- if( doc_rect.mLeft > border_width )
- {
- mScrolledView->translate( border_width - doc_rect.mLeft, 0 );
- mScrollbar[HORIZONTAL]->setDocPos( 0 );
- }
- else
- {
- scrollHorizontal( mScrollbar[HORIZONTAL]->getDocPos() );
- }
- mScrollbar[HORIZONTAL]->setVisible( TRUE );
- S32 h_scrollbar_width = visible_width;
- if( !show_v_scrollbar && mReserveScrollCorner )
- {
- h_scrollbar_width -= scrollbar_size;
- }
- mScrollbar[HORIZONTAL]->reshape( h_scrollbar_width, scrollbar_size, TRUE );
- }
- else
- {
- mScrolledView->translate( border_width - doc_rect.mLeft, 0 );
- mScrollbar[HORIZONTAL]->setVisible( FALSE );
- mScrollbar[HORIZONTAL]->setDocPos( 0 );
- }
- mScrollbar[HORIZONTAL]->setDocSize( doc_width );
- mScrollbar[HORIZONTAL]->setPageSize( visible_width );
- mScrollbar[VERTICAL]->setDocSize( doc_height );
- mScrollbar[VERTICAL]->setPageSize( visible_height );
- } // end updateScroll
- void LLScrollContainer::setBorderVisible(BOOL b)
- {
- mBorder->setVisible( b );
- // Recompute inner rect, as border visibility changes it
- mInnerRect = getLocalRect();
- mInnerRect.stretch( -getBorderWidth() );
- }
- LLRect LLScrollContainer::getVisibleContentRect()
- {
- updateScroll();
- LLRect visible_rect = getContentWindowRect();
- LLRect contents_rect = mScrolledView->getRect();
- visible_rect.translate(-contents_rect.mLeft, -contents_rect.mBottom);
- return visible_rect;
- }
- LLRect LLScrollContainer::getContentWindowRect()
- {
- updateScroll();
- LLRect scroller_view_rect;
- S32 visible_width = 0;
- S32 visible_height = 0;
- BOOL show_h_scrollbar = FALSE;
- BOOL show_v_scrollbar = FALSE;
- calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
- S32 border_width = getBorderWidth();
- scroller_view_rect.setOriginAndSize(border_width,
- show_h_scrollbar ? mScrollbar[HORIZONTAL]->getRect().mTop : border_width,
- visible_width,
- visible_height);
- return scroller_view_rect;
- }
- // rect is in document coordinates, constraint is in display coordinates relative to content window rect
- void LLScrollContainer::scrollToShowRect(const LLRect& rect, const LLRect& constraint)
- {
- if (!mScrolledView)
- {
- llwarns << "LLScrollContainer::scrollToShowRect with no view!" << llendl;
- return;
- }
- LLRect content_window_rect = getContentWindowRect();
- // get document rect
- LLRect scrolled_rect = mScrolledView->getRect();
- // shrink target rect to fit within constraint region, biasing towards top left
- LLRect rect_to_constrain = rect;
- rect_to_constrain.mBottom = llmax(rect_to_constrain.mBottom, rect_to_constrain.mTop - constraint.getHeight());
- rect_to_constrain.mRight = llmin(rect_to_constrain.mRight, rect_to_constrain.mLeft + constraint.getWidth());
- // calculate allowable positions for scroller window in document coordinates
- LLRect allowable_scroll_rect(rect_to_constrain.mRight - constraint.mRight,
- rect_to_constrain.mBottom - constraint.mBottom,
- rect_to_constrain.mLeft - constraint.mLeft,
- rect_to_constrain.mTop - constraint.mTop);
- // translate from allowable region for lower left corner to upper left corner
- allowable_scroll_rect.translate(0, content_window_rect.getHeight());
- S32 vert_pos = llclamp(mScrollbar[VERTICAL]->getDocPos(),
- mScrollbar[VERTICAL]->getDocSize() - allowable_scroll_rect.mTop, // min vertical scroll
- mScrollbar[VERTICAL]->getDocSize() - allowable_scroll_rect.mBottom); // max vertical scroll
- mScrollbar[VERTICAL]->setDocSize( scrolled_rect.getHeight() );
- mScrollbar[VERTICAL]->setPageSize( content_window_rect.getHeight() );
- mScrollbar[VERTICAL]->setDocPos( vert_pos );
- S32 horizontal_pos = llclamp(mScrollbar[HORIZONTAL]->getDocPos(),
- allowable_scroll_rect.mLeft,
- allowable_scroll_rect.mRight);
- mScrollbar[HORIZONTAL]->setDocSize( scrolled_rect.getWidth() );
- mScrollbar[HORIZONTAL]->setPageSize( content_window_rect.getWidth() );
- mScrollbar[HORIZONTAL]->setDocPos( horizontal_pos );
- // propagate scroll to document
- updateScroll();
- // In case we are in accordion tab notify parent to show selected rectangle
- LLRect screen_rc;
- localRectToScreen(rect_to_constrain, &screen_rc);
- notifyParent(LLSD().with("scrollToShowRect",screen_rc.getValue()));
- }
- void LLScrollContainer::pageUp(S32 overlap)
- {
- mScrollbar[VERTICAL]->pageUp(overlap);
- updateScroll();
- }
- void LLScrollContainer::pageDown(S32 overlap)
- {
- mScrollbar[VERTICAL]->pageDown(overlap);
- updateScroll();
- }
- void LLScrollContainer::goToTop()
- {
- mScrollbar[VERTICAL]->setDocPos(0);
- updateScroll();
- }
- void LLScrollContainer::goToBottom()
- {
- mScrollbar[VERTICAL]->setDocPos(mScrollbar[VERTICAL]->getDocSize());
- updateScroll();
- }
- S32 LLScrollContainer::getBorderWidth() const
- {
- if (mBorder->getVisible())
- {
- return mBorder->getBorderWidth();
- }
- return 0;
- }