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/**
* @file llconsole.h
* @brief a simple console-style output device
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2009, 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_LLCONSOLE_H
#define LL_LLCONSOLE_H
#include "llfixedbuffer.h"
#include "llview.h"
#include "v4color.h"
#include <deque>
class LLFontGL;
class LLSD;
class LLConsole : public LLFixedBuffer, public LLView
{
private:
F32 mLinePersistTime; // Age at which to stop drawing.
F32 mFadeTime; // Age at which to start fading
LLFontGL* mFont;
S32 mLastBoxHeight;
S32 mLastBoxWidth;
S32 mConsoleWidth;
S32 mConsoleHeight;
public:
//A paragraph color segment defines the color of text in a line
//of text that was received for console display. It has no
//notion of line wraps, screen position, or the text it contains.
//It is only the number of characters that are a color and the
//color.
struct ParagraphColorSegment
{
S32 mNumChars;
LLColor4 mColor;
};
//A line color segment is a chunk of text, the color associated
//with it, and the X Position it was calculated to begin at
//on the screen. X Positions are re-calculated if the
//screen changes size.
class LineColorSegment
{
public:
LineColorSegment(LLWString text, LLColor4 color, F32 xpos) : mText(text), mColor(color), mXPosition(xpos) {}
public:
LLWString mText;
LLColor4 mColor;
F32 mXPosition;
};
typedef std::list<LineColorSegment> line_color_segments_t;
//A line is composed of one or more color segments.
class Line
{
public:
line_color_segments_t mLineColorSegments;
};
typedef std::list<Line> lines_t;
typedef std::list<ParagraphColorSegment> paragraph_color_segments_t;
//A paragraph is a processed element containing the entire text of the
//message (used for recalculating positions on screen resize)
//The time this message was added to the console output
//The visual screen width of the longest line in this block
//And a list of one or more lines which are used to display this message.
class Paragraph
{
public:
Paragraph (LLWString str, const LLColor4 &color, F32 add_time, LLFontGL* font, F32 screen_width);
void makeParagraphColorSegments ( const LLColor4 &color);
void updateLines ( F32 screen_width, LLFontGL* font, bool force_resize=false );
public:
LLWString mParagraphText; //The entire text of the paragraph
paragraph_color_segments_t mParagraphColorSegments;
F32 mAddTime; //Time this paragraph was added to the display.
F32 mMaxWidth; //Width of the widest line of text in this paragraph.
lines_t mLines;
};
//The console contains a deque of paragraphs which represent the individual messages.
typedef std::deque<Paragraph> paragraph_t;
paragraph_t mParagraphs;
// Font size:
// -1 = monospace, 0 means small, font size = 1 means big
LLConsole(const std::string& name, const U32 max_lines, const LLRect &rect,
S32 font_size_index, F32 persist_time );
~LLConsole(){};
// each line lasts this long after being added
void setLinePersistTime(F32 seconds);
void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
// -1 = monospace, 0 means small, font size = 1 means big
void setFontSize(S32 size_index);
void addLine(const std::string& utf8line, F32 size, const LLColor4 &color);
void addLine(const LLWString& wline, F32 size, const LLColor4 &color);
// Overrides
/*virtual*/ void draw();
/*virtual*/ void addLine(const std::string& utf8line);
/*virtual*/ void addLine(const LLWString& line);
};
extern LLConsole* gConsole;
#endif
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