c18b156d8b
An LLFolderView is added as child to LLScrollableContainerView, but also adds the LLScrollableContainerView to it's mScrollContainer. As a result, when scrolling inside a LLFolderView the event is passed to the mScrollContainer, which then passes it first on to it's children (see the "Bad UI design" remark in the code), causing an infinite loop. This patch breaks that loop for those objects that have a mScrollContainer: LLFolderView and LLContainerView.
137 lines
4.9 KiB
C++
137 lines
4.9 KiB
C++
/**
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* @file llscrollcontainer.h
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* @brief LLScrollableContainerView class header file.
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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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#ifndef LL_LLSCROLLCONTAINER_H
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#define LL_LLSCROLLCONTAINER_H
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#include "lluictrl.h"
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#ifndef LL_V4COLOR_H
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#include "v4color.h"
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#endif
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#include "stdenums.h"
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#include "llcoord.h"
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#include "llscrollbar.h"
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class LLViewBorder;
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class LLUICtrlFactory;
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/*****************************************************************************
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*
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* A decorator view class meant to encapsulate a clipped region which is
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* scrollable. It automatically takes care of pixel perfect scrolling
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* and cliipping, as well as turning the scrollbars on or off based on
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* the width and height of the view you're scrolling.
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*
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*****************************************************************************/
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class LLScrollableContainerView : public LLUICtrl
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{
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public:
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// Note: vertical comes before horizontal because vertical
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// scrollbars have priority for mouse and keyboard events.
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enum SCROLL_ORIENTATION { VERTICAL, HORIZONTAL, SCROLLBAR_COUNT };
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LLScrollableContainerView( const std::string& name, const LLRect& rect,
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LLView* scrolled_view, BOOL is_opaque = FALSE,
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const LLColor4& bg_color = LLColor4(0,0,0,0) );
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virtual ~LLScrollableContainerView( void );
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void setScrolledView(LLView* view) { mScrolledView = view; }
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virtual void setValue(const LLSD& value) { mInnerRect.setValue(value); }
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void setBorderVisible( BOOL b );
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void setPassBackToChildren(bool b) { mPassBackToChildren = b; }
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void scrollToShowRect( const LLRect& rect, const LLRect& constraint);
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void scrollToShowRect( const LLRect& rect) { scrollToShowRect(rect, LLRect(0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0)); }
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void setReserveScrollCorner( BOOL b ) { mReserveScrollCorner = b; }
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LLRect getVisibleContentRect();
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LLRect getContentWindowRect();
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const LLRect& getScrolledViewRect() const { return mScrolledView ? mScrolledView->getRect() : LLRect::null; }
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void pageUp(S32 overlap = 0);
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void pageDown(S32 overlap = 0);
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void goToTop();
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void goToBottom();
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bool isAtTop() { return mScrollbar[VERTICAL]->isAtBeginning(); }
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bool isAtBottom() { return mScrollbar[VERTICAL]->isAtEnd(); }
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S32 getBorderWidth() const;
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// LLView functionality
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virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
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virtual BOOL handleKeyHere(KEY key, MASK mask);
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virtual BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
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virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, 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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virtual BOOL handleToolTip(S32 x, S32 y, std::string& msg, LLRect* sticky_rect);
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virtual void draw();
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virtual bool addChild(LLView* view, S32 tab_group = 0);
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bool autoScroll(S32 x, S32 y);
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virtual LLXMLNodePtr getXML(bool save_children) const;
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static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLUICtrlFactory *factory);
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private:
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void init();
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// internal scrollbar handlers
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virtual void scrollHorizontal( S32 new_pos );
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virtual void scrollVertical( S32 new_pos );
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void updateScroll();
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public:
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void calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const;
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private:
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LLScrollbar* mScrollbar[SCROLLBAR_COUNT];
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LLView* mScrolledView;
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S32 mSize;
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BOOL mIsOpaque;
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LLColor4 mBackgroundColor;
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LLRect mInnerRect;
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LLViewBorder* mBorder;
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BOOL mReserveScrollCorner;
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BOOL mAutoScrolling;
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F32 mAutoScrollRate;
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F32 mMinAutoScrollRate;
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F32 mMaxAutoScrollRate;
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bool mHideScrollbar;
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bool mPassBackToChildren;
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};
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#endif // LL_LLSCROLLCONTAINER_H
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