/** * @file llscrollcontainer.h * @brief LLScrollContainer class header file. * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLSCROLLCONTAINER_H #define LL_LLSCROLLCONTAINER_H #include "lluictrl.h" #ifndef LL_V4COLOR_H #include "v4color.h" #endif #include "stdenums.h" #include "llcoord.h" #include "llscrollbar.h" class LLViewBorder; class LLUICtrlFactory; /***************************************************************************** * * A decorator view class meant to encapsulate a clipped region which is * scrollable. It automatically takes care of pixel perfect scrolling * and cliipping, as well as turning the scrollbars on or off based on * the width and height of the view you're scrolling. * *****************************************************************************/ struct ScrollContainerRegistry : public LLChildRegistry<ScrollContainerRegistry> {}; class LLScrollContainer : public LLUICtrl { public: // Note: vertical comes before horizontal because vertical // scrollbars have priority for mouse and keyboard events. struct Params : public LLInitParam::Block<Params, LLUICtrl::Params> { Optional<bool> is_opaque, reserve_scroll_corner, border_visible, hide_scrollbar; Optional<F32> min_auto_scroll_rate, max_auto_scroll_rate; Optional<LLUIColor> bg_color; Optional<LLScrollbar::callback_t> scroll_callback; Params(); }; // my valid children are stored in this registry typedef ScrollContainerRegistry child_registry_t; protected: LLScrollContainer(const Params&); friend class LLUICtrlFactory; public: virtual ~LLScrollContainer( void ); virtual void setValue(const LLSD& value) { mInnerRect.setValue(value); } void setBorderVisible( BOOL b ); void scrollToShowRect( const LLRect& rect, const LLRect& constraint); void scrollToShowRect( const LLRect& rect) { scrollToShowRect(rect, LLRect(0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0)); } void setReserveScrollCorner( BOOL b ) { mReserveScrollCorner = b; } LLRect getVisibleContentRect(); LLRect getContentWindowRect(); virtual const LLRect getScrolledViewRect() const { return mScrolledView ? mScrolledView->getRect() : LLRect::null; } void pageUp(S32 overlap = 0); void pageDown(S32 overlap = 0); void goToTop(); void goToBottom(); bool isAtTop() { return mScrollbar[VERTICAL]->isAtBeginning(); } bool isAtBottom() { return mScrollbar[VERTICAL]->isAtEnd(); } S32 getBorderWidth() const; // LLView functionality virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE); virtual BOOL handleKeyHere(KEY key, MASK mask); virtual BOOL handleUnicodeCharHere(llwchar uni_char); virtual BOOL handleScrollWheel( S32 x, S32 y, S32 clicks ); virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg); virtual void draw(); virtual bool addChild(LLView* view, S32 tab_group = 0); bool autoScroll(S32 x, S32 y); protected: LLView* mScrolledView; private: // internal scrollbar handlers virtual void scrollHorizontal( S32 new_pos ); virtual void scrollVertical( S32 new_pos ); void updateScroll(); void calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const; LLScrollbar* mScrollbar[ORIENTATION_COUNT]; S32 mSize; BOOL mIsOpaque; LLUIColor mBackgroundColor; LLRect mInnerRect; LLViewBorder* mBorder; BOOL mReserveScrollCorner; BOOL mAutoScrolling; F32 mAutoScrollRate; F32 mMinAutoScrollRate; F32 mMaxAutoScrollRate; bool mHideScrollbar; }; #endif // LL_LLSCROLLCONTAINER_H