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/**
* @file llconsole.h
* @brief a simple console-style output device
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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_LLCONSOLE_H
#define LL_LLCONSOLE_H
#include "llfixedbuffer.h"
#include "lluictrl.h"
#include "v4color.h"
#include <deque>
class LLSD;
class LLConsole : public LLFixedBuffer, public LLUICtrl, public LLInstanceTracker<LLConsole>
{
public:
typedef enum e_font_size
{
MONOSPACE = -1,
SMALL = 0,
BIG = 1
} EFontSize;
struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
{
Optional<U32> max_lines;
Optional<F32> persist_time;
Optional<S32> font_size_index;
Params()
: max_lines("max_lines", LLUI::sSettingGroups["config"]->getS32("ConsoleMaxLines")),
persist_time("persist_time", 0.f), // forever
font_size_index("font_size_index")
{
mouse_opaque(false);
}
};
protected:
LLConsole(const Params&);
friend class LLUICtrlFactory;
public:
// call once per frame to pull data out of LLFixedBuffer
static void updateClass();
//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, const LLFontGL* font, F32 screen_width);
void makeParagraphColorSegments ( const LLColor4 &color);
void updateLines ( F32 screen_width, const 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;
~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);
// Overrides
/*virtual*/ void draw();
private:
void update();
F32 mLinePersistTime; // Age at which to stop drawing.
F32 mFadeTime; // Age at which to start fading
const LLFontGL* mFont;
S32 mConsoleWidth;
S32 mConsoleHeight;
};
extern LLConsole* gConsole;
#endif
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