Imported existing code

indra/newview/llhudtext.h

@@ -0,0 +1,188 @@
+/** 
+ * @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 "llmemory.h"
+#include "lldarrayptr.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>
+#include "lldarray.h"
+
+// 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)
+			: mColor(color), mStyle(style), mText(text) {}
+		F32 getWidth(const LLFontGL* font);
+		const LLWString& getText() const { return mText; };
+		void clearFontWidthMap() { mFontWidthMap.clear(); }
+		
+		LLColor4				mColor;
+		LLFontGL::StyleFlags	mStyle;
+	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 setStringUTF8(const std::string &utf8string);
+	void setString(const LLWString &wstring);
+	void clearString();
+	void addLine(const std::string &text, const LLColor4& color, const LLFontGL::StyleFlags style = LLFontGL::NORMAL);
+	void addLine(const LLWString &wtext, const LLColor4& color, const LLFontGL::StyleFlags style = LLFontGL::NORMAL);
+	void setLabel(const std::string &label);
+	void setLabel(const LLWString &label);
+	void setDropShadow(const BOOL do_shadow);
+	void setFont(const LLFontGL* font);
+	void setColor(const LLColor4 &color);
+	void setUsePixelSize(const BOOL use_pixel_size);
+	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			mUsePixelSize;
+	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