680 lines
21 KiB
C++
680 lines
21 KiB
C++
/**
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* @file llscrollcontainer.cpp
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* @brief LLScrollContainer base class
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llscrollcontainer.h"
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#include "llrender.h"
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#include "llcontainerview.h"
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// #include "llfolderview.h"
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#include "llscrollingpanellist.h"
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#include "llscrollbar.h"
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#include "llui.h"
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#include "llkeyboard.h"
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#include "llviewborder.h"
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#include "llfocusmgr.h"
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#include "llframetimer.h"
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#include "lluictrlfactory.h"
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#include "llpanel.h"
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#include "llfontgl.h"
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///----------------------------------------------------------------------------
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/// Local function declarations, constants, enums, and typedefs
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///----------------------------------------------------------------------------
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static const S32 HORIZONTAL_MULTIPLE = 8;
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static const S32 VERTICAL_MULTIPLE = 16;
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static const F32 MIN_AUTO_SCROLL_RATE = 120.f;
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static const F32 MAX_AUTO_SCROLL_RATE = 500.f;
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static const F32 AUTO_SCROLL_RATE_ACCEL = 120.f;
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///----------------------------------------------------------------------------
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/// Class LLScrollContainer
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///----------------------------------------------------------------------------
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static LLDefaultChildRegistry::Register<LLScrollContainer> r("scroll_container");
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LLScrollContainer::Params::Params()
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: is_opaque("opaque"),
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bg_color("color"),
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reserve_scroll_corner("reserve_scroll_corner", false)
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{
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name = "scroll_container";
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mouse_opaque(true);
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tab_stop(false);
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}
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// Default constructor
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LLScrollContainer::LLScrollContainer(const LLScrollContainer::Params& p)
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: LLUICtrl(p),
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mAutoScrolling( FALSE ),
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mAutoScrollRate( 0.f ),
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mBackgroundColor(p.bg_color()),
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mIsOpaque(p.is_opaque),
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mReserveScrollCorner(p.reserve_scroll_corner),
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mScrolledView(NULL)
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{
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static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
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LLRect border_rect( 0, getRect().getHeight(), getRect().getWidth(), 0 );
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LLViewBorder::Params params;
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params.name("scroll border");
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params.rect(border_rect);
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params.bevel_style(LLViewBorder::BEVEL_IN);
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mBorder = LLUICtrlFactory::create<LLViewBorder> (params);
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LLView::addChild( mBorder );
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mInnerRect.set( 0, getRect().getHeight(), getRect().getWidth(), 0 );
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mInnerRect.stretch( -mBorder->getBorderWidth() );
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LLRect vertical_scroll_rect = mInnerRect;
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vertical_scroll_rect.mLeft = vertical_scroll_rect.mRight - scrollbar_size;
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LLScrollbar::Params sbparams;
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sbparams.name("scrollable vertical");
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sbparams.rect(vertical_scroll_rect);
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sbparams.orientation(LLScrollbar::VERTICAL);
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sbparams.doc_size(mInnerRect.getHeight());
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sbparams.doc_pos(0);
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sbparams.page_size(mInnerRect.getHeight());
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sbparams.step_size(VERTICAL_MULTIPLE);
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mScrollbar[VERTICAL] = LLUICtrlFactory::create<LLScrollbar> (sbparams);
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LLView::addChild( mScrollbar[VERTICAL] );
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mScrollbar[VERTICAL]->setVisible( FALSE );
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mScrollbar[VERTICAL]->setFollowsRight();
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mScrollbar[VERTICAL]->setFollowsTop();
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mScrollbar[VERTICAL]->setFollowsBottom();
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LLRect horizontal_scroll_rect = mInnerRect;
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horizontal_scroll_rect.mTop = horizontal_scroll_rect.mBottom + scrollbar_size;
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sbparams.name("scrollable horizontal");
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sbparams.rect(horizontal_scroll_rect);
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sbparams.orientation(LLScrollbar::HORIZONTAL);
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sbparams.doc_size(mInnerRect.getWidth());
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sbparams.doc_pos(0);
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sbparams.page_size(mInnerRect.getWidth());
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sbparams.step_size(VERTICAL_MULTIPLE);
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mScrollbar[HORIZONTAL] = LLUICtrlFactory::create<LLScrollbar> (sbparams);
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LLView::addChild( mScrollbar[HORIZONTAL] );
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mScrollbar[HORIZONTAL]->setVisible( FALSE );
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mScrollbar[HORIZONTAL]->setFollowsLeft();
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mScrollbar[HORIZONTAL]->setFollowsRight();
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}
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// Destroys the object
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LLScrollContainer::~LLScrollContainer( void )
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{
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// mScrolledView and mScrollbar are child views, so the LLView
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// destructor takes care of memory deallocation.
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for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
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{
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mScrollbar[i] = NULL;
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}
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mScrolledView = NULL;
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}
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// internal scrollbar handlers
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// virtual
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void LLScrollContainer::scrollHorizontal( S32 new_pos )
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{
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//llinfos << "LLScrollContainer::scrollHorizontal()" << llendl;
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if( mScrolledView )
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{
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LLRect doc_rect = mScrolledView->getRect();
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S32 old_pos = -(doc_rect.mLeft - mInnerRect.mLeft);
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mScrolledView->translate( -(new_pos - old_pos), 0 );
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}
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}
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// virtual
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void LLScrollContainer::scrollVertical( S32 new_pos )
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{
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// llinfos << "LLScrollContainer::scrollVertical() " << new_pos << llendl;
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if( mScrolledView )
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{
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LLRect doc_rect = mScrolledView->getRect();
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S32 old_pos = doc_rect.mTop - mInnerRect.mTop;
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mScrolledView->translate( 0, new_pos - old_pos );
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}
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}
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// LLView functionality
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void LLScrollContainer::reshape(S32 width, S32 height,
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BOOL called_from_parent)
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{
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LLUICtrl::reshape( width, height, called_from_parent );
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mInnerRect.set( 0, getRect().getHeight(), getRect().getWidth(), 0 );
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mInnerRect.stretch( -mBorder->getBorderWidth() );
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if (mScrolledView)
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{
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const LLRect& scrolled_rect = mScrolledView->getRect();
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S32 visible_width = 0;
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S32 visible_height = 0;
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BOOL show_v_scrollbar = FALSE;
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BOOL show_h_scrollbar = FALSE;
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calcVisibleSize( scrolled_rect, &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
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mScrollbar[VERTICAL]->setDocSize( scrolled_rect.getHeight() );
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mScrollbar[VERTICAL]->setPageSize( visible_height );
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mScrollbar[HORIZONTAL]->setDocSize( scrolled_rect.getWidth() );
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mScrollbar[HORIZONTAL]->setPageSize( visible_width );
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}
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}
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BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
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{
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// allow scrolled view to handle keystrokes in case it delegated keyboard focus
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// to the scroll container.
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// NOTE: this should not recurse indefinitely as handleKeyHere
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// should not propagate to parent controls, so mScrolledView should *not*
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// call LLScrollContainer::handleKeyHere in turn
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if (mScrolledView->handleKeyHere(key, mask))
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{
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return TRUE;
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}
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for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
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{
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if( mScrollbar[i]->handleKeyHere(key, mask) )
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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BOOL LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
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{
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for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
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{
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// Note: tries vertical and then horizontal
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// Pretend the mouse is over the scrollbar
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if( mScrollbar[i]->handleScrollWheel( 0, 0, clicks ) )
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{
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return TRUE;
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}
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}
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// Eat scroll wheel event (to avoid scrolling nested containers?)
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return TRUE;
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}
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BOOL LLScrollContainer::needsToScroll(S32 x, S32 y, LLScrollContainer::SCROLL_ORIENTATION axis) const
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{
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if(mScrollbar[axis]->getVisible())
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{
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LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
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const S32 AUTOSCROLL_SIZE = 10;
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if(mScrollbar[axis]->getVisible())
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{
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static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
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inner_rect_local.mRight -= scrollbar_size;
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inner_rect_local.mTop += AUTOSCROLL_SIZE;
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inner_rect_local.mBottom = inner_rect_local.mTop - AUTOSCROLL_SIZE;
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}
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if( inner_rect_local.pointInRect( x, y ) && (mScrollbar[axis]->getDocPos() > 0) )
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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BOOL LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
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BOOL drop,
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EDragAndDropType cargo_type,
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void* cargo_data,
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EAcceptance* accept,
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std::string& tooltip_msg)
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{
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static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
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// Scroll folder view if needed. Never accepts a drag or drop.
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*accept = ACCEPT_NO;
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BOOL handled = FALSE;
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if( mScrollbar[HORIZONTAL]->getVisible() || mScrollbar[VERTICAL]->getVisible() )
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{
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const S32 AUTOSCROLL_SIZE = 10;
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S32 auto_scroll_speed = llround(mAutoScrollRate * LLFrameTimer::getFrameDeltaTimeF32());
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LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
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if( mScrollbar[HORIZONTAL]->getVisible() )
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{
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inner_rect_local.mBottom += scrollbar_size;
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}
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if( mScrollbar[VERTICAL]->getVisible() )
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{
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inner_rect_local.mRight -= scrollbar_size;
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}
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if( mScrollbar[HORIZONTAL]->getVisible() )
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{
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LLRect left_scroll_rect = inner_rect_local;
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left_scroll_rect.mRight = AUTOSCROLL_SIZE;
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if( left_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() > 0) )
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{
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mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() - auto_scroll_speed );
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mAutoScrolling = TRUE;
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handled = TRUE;
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}
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LLRect right_scroll_rect = inner_rect_local;
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right_scroll_rect.mLeft = inner_rect_local.mRight - AUTOSCROLL_SIZE;
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if( right_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() < mScrollbar[HORIZONTAL]->getDocPosMax()) )
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{
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mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() + auto_scroll_speed );
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mAutoScrolling = TRUE;
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handled = TRUE;
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}
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}
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if( mScrollbar[VERTICAL]->getVisible() )
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{
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LLRect bottom_scroll_rect = inner_rect_local;
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bottom_scroll_rect.mTop = AUTOSCROLL_SIZE + bottom_scroll_rect.mBottom;
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if( bottom_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() < mScrollbar[VERTICAL]->getDocPosMax()) )
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{
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mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() + auto_scroll_speed );
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mAutoScrolling = TRUE;
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handled = TRUE;
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}
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LLRect top_scroll_rect = inner_rect_local;
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top_scroll_rect.mBottom = inner_rect_local.mTop - AUTOSCROLL_SIZE;
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if( top_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() > 0) )
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{
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mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() - auto_scroll_speed );
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mAutoScrolling = TRUE;
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handled = TRUE;
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}
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}
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}
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if( !handled )
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{
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handled = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type,
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cargo_data, accept, tooltip_msg) != NULL;
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}
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return TRUE;
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}
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void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const
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{
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const LLRect& rect = mScrolledView->getRect();
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calcVisibleSize(rect, visible_width, visible_height, show_h_scrollbar, show_v_scrollbar);
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}
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void LLScrollContainer::calcVisibleSize( const LLRect& doc_rect, S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const
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{
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static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
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S32 doc_width = doc_rect.getWidth();
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S32 doc_height = doc_rect.getHeight();
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*visible_width = getRect().getWidth() - 2 * mBorder->getBorderWidth();
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*visible_height = getRect().getHeight() - 2 * mBorder->getBorderWidth();
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*show_v_scrollbar = FALSE;
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if( *visible_height < doc_height )
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{
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*show_v_scrollbar = TRUE;
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*visible_width -= scrollbar_size;
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}
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*show_h_scrollbar = FALSE;
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if( *visible_width < doc_width )
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{
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*show_h_scrollbar = TRUE;
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*visible_height -= scrollbar_size;
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// Must retest now that visible_height has changed
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if( !*show_v_scrollbar && (*visible_height < doc_height) )
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{
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*show_v_scrollbar = TRUE;
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*visible_width -= scrollbar_size;
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}
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}
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}
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void LLScrollContainer::draw()
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{
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static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
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if (mAutoScrolling)
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{
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// add acceleration to autoscroll
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mAutoScrollRate = llmin(mAutoScrollRate + (LLFrameTimer::getFrameDeltaTimeF32() * AUTO_SCROLL_RATE_ACCEL), MAX_AUTO_SCROLL_RATE);
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}
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else
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{
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// reset to minimum
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mAutoScrollRate = MIN_AUTO_SCROLL_RATE;
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}
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// clear this flag to be set on next call to handleDragAndDrop
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mAutoScrolling = FALSE;
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// auto-focus when scrollbar active
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// this allows us to capture user intent (i.e. stop automatically scrolling the view/etc)
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if (!gFocusMgr.childHasKeyboardFocus(this) &&
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(mScrollbar[VERTICAL]->hasMouseCapture() || mScrollbar[HORIZONTAL]->hasMouseCapture()))
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{
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focusFirstItem();
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}
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// Draw background
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if( mIsOpaque )
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{
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gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
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gGL.color4fv( mBackgroundColor.get().mV );
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gl_rect_2d( mInnerRect );
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}
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// Draw mScrolledViews and update scroll bars.
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// get a scissor region ready, and draw the scrolling view. The
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// scissor region ensures that we don't draw outside of the bounds
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// of the rectangle.
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if( mScrolledView )
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{
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updateScroll();
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// Draw the scrolled area.
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{
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S32 visible_width = 0;
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S32 visible_height = 0;
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BOOL show_v_scrollbar = FALSE;
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BOOL show_h_scrollbar = FALSE;
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calcVisibleSize( mScrolledView->getRect(), &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
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LLLocalClipRect clip(LLRect(mInnerRect.mLeft,
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mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0) + visible_height,
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visible_width,
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mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0)
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));
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drawChild(mScrolledView);
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}
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}
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// Highlight border if a child of this container has keyboard focus
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if( mBorder->getVisible() )
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{
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mBorder->setKeyboardFocusHighlight( gFocusMgr.childHasKeyboardFocus(this) );
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}
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// Draw all children except mScrolledView
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// Note: scrollbars have been adjusted by above drawing code
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for (child_list_const_reverse_iter_t child_iter = getChildList()->rbegin();
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child_iter != getChildList()->rend(); ++child_iter)
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{
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LLView *viewp = *child_iter;
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if( sDebugRects )
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{
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sDepth++;
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}
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if( (viewp != mScrolledView) && viewp->getVisible() )
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{
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drawChild(viewp);
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}
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if( sDebugRects )
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{
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sDepth--;
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}
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}
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if (sDebugRects)
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{
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drawDebugRect();
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}
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//// *HACK: also draw debug rectangles around currently-being-edited LLView, and any elements that are being highlighted by GUI preview code (see LLFloaterUIPreview)
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//std::set<LLView*>::iterator iter = std::find(sPreviewHighlightedElements.begin(), sPreviewHighlightedElements.end(), this);
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//if ((sEditingUI && this == sEditingUIView) || (iter != sPreviewHighlightedElements.end() && sDrawPreviewHighlights))
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//{
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// drawDebugRect();
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//}
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} // end draw
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bool LLScrollContainer::addChild(LLView* view, S32 tab_group)
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{
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if (!mScrolledView)
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{
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// Use the first panel or container as the scrollable view (bit of a hack)
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mScrolledView = view;
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}
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bool ret_val = LLView::addChild(view, tab_group);
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//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( doc_rect, &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
|
|
|
|
S32 border_width = mBorder->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 );
|
|
}
|
|
|
|
// Scroll so that as much of rect as possible is showing (where rect is defined in the space of scroller view, not scrolled)
|
|
void LLScrollContainer::scrollToShowRect(const LLRect& rect, const LLCoordGL& desired_offset)
|
|
{
|
|
if (!mScrolledView)
|
|
{
|
|
llwarns << "LLScrollContainer::scrollToShowRect with no view!" << llendl;
|
|
return;
|
|
}
|
|
|
|
S32 visible_width = 0;
|
|
S32 visible_height = 0;
|
|
BOOL show_v_scrollbar = FALSE;
|
|
BOOL show_h_scrollbar = FALSE;
|
|
const LLRect& scrolled_rect = mScrolledView->getRect();
|
|
calcVisibleSize( scrolled_rect, &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
|
|
|
|
// can't be so far left that right side of rect goes off screen, or so far right that left side does
|
|
S32 horiz_offset = llclamp(desired_offset.mX, llmin(0, -visible_width + rect.getWidth()), 0);
|
|
// can't be so high that bottom of rect goes off screen, or so low that top does
|
|
S32 vert_offset = llclamp(desired_offset.mY, 0, llmax(0, visible_height - rect.getHeight()));
|
|
|
|
// Vertical
|
|
// 1. First make sure the top is visible
|
|
// 2. Then, if possible without hiding the top, make the bottom visible.
|
|
S32 vert_pos = mScrollbar[VERTICAL]->getDocPos();
|
|
|
|
// find scrollbar position to get top of rect on screen (scrolling up)
|
|
S32 top_offset = scrolled_rect.mTop - rect.mTop - vert_offset;
|
|
// find scrollbar position to get bottom of rect on screen (scrolling down)
|
|
S32 bottom_offset = vert_offset == 0 ? scrolled_rect.mTop - rect.mBottom - visible_height : top_offset;
|
|
// scroll up far enough to see top or scroll down just enough if item is bigger than visual area
|
|
if( vert_pos >= top_offset || visible_height < rect.getHeight())
|
|
{
|
|
vert_pos = top_offset;
|
|
}
|
|
// else scroll down far enough to see bottom
|
|
else
|
|
if( vert_pos <= bottom_offset )
|
|
{
|
|
vert_pos = bottom_offset;
|
|
}
|
|
|
|
mScrollbar[VERTICAL]->setDocSize( scrolled_rect.getHeight() );
|
|
mScrollbar[VERTICAL]->setPageSize( visible_height );
|
|
mScrollbar[VERTICAL]->setDocPos( vert_pos );
|
|
|
|
// Horizontal
|
|
// 1. First make sure left side is visible
|
|
// 2. Then, if possible without hiding the left side, make the right side visible.
|
|
S32 horiz_pos = mScrollbar[HORIZONTAL]->getDocPos();
|
|
S32 left_offset = rect.mLeft - scrolled_rect.mLeft + horiz_offset;
|
|
S32 right_offset = horiz_offset == 0 ? rect.mRight - scrolled_rect.mLeft - visible_width : left_offset;
|
|
|
|
if( horiz_pos >= left_offset || visible_width < rect.getWidth() )
|
|
{
|
|
horiz_pos = left_offset;
|
|
}
|
|
else if( horiz_pos <= right_offset )
|
|
{
|
|
horiz_pos = right_offset;
|
|
}
|
|
|
|
mScrollbar[HORIZONTAL]->setDocSize( scrolled_rect.getWidth() );
|
|
mScrollbar[HORIZONTAL]->setPageSize( visible_width );
|
|
mScrollbar[HORIZONTAL]->setDocPos( horiz_pos );
|
|
|
|
// propagate scroll to document
|
|
updateScroll();
|
|
}
|
|
|
|
void LLScrollContainer::pageUp(S32 overlap)
|
|
{
|
|
mScrollbar[VERTICAL]->pageUp(overlap);
|
|
}
|
|
|
|
void LLScrollContainer::pageDown(S32 overlap)
|
|
{
|
|
mScrollbar[VERTICAL]->pageDown(overlap);
|
|
}
|
|
|
|
void LLScrollContainer::goToTop()
|
|
{
|
|
mScrollbar[VERTICAL]->setDocPos(0);
|
|
}
|
|
|
|
void LLScrollContainer::goToBottom()
|
|
{
|
|
mScrollbar[VERTICAL]->setDocPos(mScrollbar[VERTICAL]->getDocSize());
|
|
}
|
|
|
|
S32 LLScrollContainer::getBorderWidth() const
|
|
{
|
|
if (mBorder)
|
|
{
|
|
return mBorder->getBorderWidth();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|