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/**
* @file llhudtext.h
* @brief LLHUDText class definition
*
* $LicenseInfo:firstyear=2002&license=viewergpl$
*
* Copyright (c) 2002-2009, 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.
* $/LicenseInfo$
*/
#ifndef LL_LLHUDTEXT_H
#define LL_LLHUDTEXT_H
#include "llpointer.h"
#include "llhudobject.h"
#include "v4color.h"
#include "v4coloru.h"
#include "v2math.h"
#include "llrect.h"
#include "llframetimer.h"
#include "llfontgl.h"
#include <set>
#include <vector>
// Renders a 2D text billboard floating at the location specified.
class LLDrawable;
class LLHUDText;
struct lltextobject_further_away
{
bool operator()(const LLPointer<LLHUDText>& lhs, const LLPointer<LLHUDText>& rhs) const;
};
class LLHUDText : public LLHUDObject
{
protected:
class LLHUDTextSegment
{
public:
LLHUDTextSegment(const LLWString& text, const LLFontGL::StyleFlags style, const LLColor4& color, const LLFontGL* font)
: mColor(color),
mStyle(style),
mText(text),
mFont(font)
{}
F32 getWidth(const LLFontGL* font);
const LLWString& getText() const { return mText; }
void clearFontWidthMap() { mFontWidthMap.clear(); }
LLColor4 mColor;
LLFontGL::StyleFlags mStyle;
const LLFontGL* mFont;
private:
LLWString mText;
std::map<const LLFontGL*, F32> mFontWidthMap;
};
public:
typedef enum e_text_alignment
{
ALIGN_TEXT_LEFT,
ALIGN_TEXT_CENTER
} ETextAlignment;
typedef enum e_vert_alignment
{
ALIGN_VERT_TOP,
ALIGN_VERT_CENTER
} EVertAlignment;
public:
void setString(const std::string& text_utf8);
// void setString(const LLWString &wstring);
void clearString();
void addLine(const std::string &text_utf8, const LLColor4& color, const LLFontGL::StyleFlags style = LLFontGL::NORMAL, const LLFontGL* font = NULL);
// void addLine(const LLWString &wtext, const LLColor4& color, const LLFontGL::StyleFlags style = LLFontGL::NORMAL, const LLFontGL* font = NULL);
void setLabel(const std::string& label_utf8);
// void setLabel(const LLWString &label);
void addLabel(const std::string& label_utf8);
void setDropShadow(const BOOL do_shadow);
void setFont(const LLFontGL* font);
void setColor(const LLColor4 &color);
void setAlpha(F32 alpha);
void setZCompare(const BOOL zcompare);
void setDoFade(const BOOL do_fade);
void setVisibleOffScreen(BOOL visible) { mVisibleOffScreen = visible; }
// mMaxLines of -1 means unlimited lines.
void setMaxLines(S32 max_lines) { mMaxLines = max_lines; }
void setFadeDistance(F32 fade_distance, F32 fade_range) { mFadeDistance = fade_distance; mFadeRange = fade_range; }
void updateVisibility();
LLVector2 updateScreenPos(LLVector2 &offset_target);
void updateSize();
void setMass(F32 mass) { mMass = llmax(0.1f, mass); }
void setTextAlignment(ETextAlignment alignment) { mTextAlignment = alignment; }
void setVertAlignment(EVertAlignment alignment) { mVertAlignment = alignment; }
/*virtual*/ void markDead();
friend class LLHUDObject;
/*virtual*/ F32 getDistance() const { return mLastDistance; }
void setUseBubble(BOOL use_bubble) { mUseBubble = use_bubble; }
S32 getLOD() { return mLOD; }
BOOL getVisible() { return mVisible; }
BOOL getHidden() const { return mHidden; }
void setHidden( BOOL hide ) { mHidden = hide; }
void setOnHUDAttachment(BOOL on_hud) { mOnHUDAttachment = on_hud; }
void shift(const LLVector3& offset);
BOOL lineSegmentIntersect(const LLVector3& start, const LLVector3& end, LLVector3& intersection, BOOL debug_render = FALSE);
static void shiftAll(const LLVector3& offset);
static void renderAllHUD();
static void addPickable(std::set<LLViewerObject*> &pick_list);
static void reshape();
static void setDisplayText(BOOL flag) { sDisplayText = flag ; }
protected:
LLHUDText(const U8 type);
/*virtual*/ void render();
/*virtual*/ void renderForSelect();
void renderText(BOOL for_select);
static void updateAll();
void setLOD(S32 lod);
S32 getMaxLines();
private:
~LLHUDText();
BOOL mOnHUD;
BOOL mUseBubble;
BOOL mDropShadow;
BOOL mDoFade;
F32 mFadeRange;
F32 mFadeDistance;
F32 mLastDistance;
BOOL mZCompare;
BOOL mVisibleOffScreen;
BOOL mOffscreen;
LLColor4 mColor;
LLVector3 mScale;
F32 mWidth;
F32 mHeight;
LLColor4U mPickColor;
const LLFontGL* mFontp;
const LLFontGL* mBoldFontp;
LLRectf mSoftScreenRect;
LLVector3 mPositionAgent;
LLVector2 mPositionOffset;
LLVector2 mTargetPositionOffset;
F32 mMass;
S32 mMaxLines;
S32 mOffsetY;
F32 mRadius;
std::vector<LLHUDTextSegment> mTextSegments;
std::vector<LLHUDTextSegment> mLabelSegments;
LLFrameTimer mResizeTimer;
ETextAlignment mTextAlignment;
EVertAlignment mVertAlignment;
S32 mLOD;
BOOL mHidden;
static BOOL sDisplayText ;
static std::set<LLPointer<LLHUDText> > sTextObjects;
static std::vector<LLPointer<LLHUDText> > sVisibleTextObjects;
static std::vector<LLPointer<LLHUDText> > sVisibleHUDTextObjects;
typedef std::set<LLPointer<LLHUDText> >::iterator TextObjectIterator;
typedef std::vector<LLPointer<LLHUDText> >::iterator VisibleTextObjectIterator;
};
#endif // LL_LLHUDTEXT_H
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