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/*!
\file GUIFont.h
\brief
*/
#ifndef CGUILIB_GUIFONT_H
#define CGUILIB_GUIFONT_H
#pragma once
/*
* Copyright (C) 2003-2010 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "StdString.h"
#include <assert.h>
typedef uint32_t character_t;
typedef uint32_t color_t;
typedef std::vector<character_t> vecText;
typedef std::vector<color_t> vecColors;
class CGUIFontTTFBase;
// flags for alignment
#define XBFONT_LEFT 0x00000000
#define XBFONT_RIGHT 0x00000001
#define XBFONT_CENTER_X 0x00000002
#define XBFONT_CENTER_Y 0x00000004
#define XBFONT_TRUNCATED 0x00000008
#define XBFONT_JUSTIFIED 0x00000010
#define FONT_STYLE_NORMAL 0
#define FONT_STYLE_BOLD 1
#define FONT_STYLE_ITALICS 2
#define FONT_STYLE_BOLD_ITALICS 3
class CScrollInfo
{
public:
CScrollInfo(unsigned int wait = 50, float pos = 0, int speed = defaultSpeed, const CStdString &scrollSuffix = " | ")
{
initialWait = wait;
initialPos = pos;
SetSpeed(speed ? speed : defaultSpeed);
suffix = scrollSuffix;
Reset();
};
void SetSpeed(int speed)
{
pixelSpeed = speed * 0.001f;
}
void Reset()
{
waitTime = initialWait;
characterPos = 0;
// pixelPos is where we start the current letter, so is measured
// to the left of the text rendering's left edge. Thus, a negative
// value will mean the text starts to the right
pixelPos = -initialPos;
// privates:
m_averageFrameTime = 1000.f / abs(defaultSpeed);
m_lastFrameTime = 0;
}
uint32_t GetCurrentChar(const vecText &text) const
{
assert(text.size());
if (characterPos < text.size())
return text[characterPos];
else if (characterPos < text.size() + suffix.size())
return suffix[characterPos - text.size()];
return text[0];
}
float GetPixelsPerFrame();
float pixelPos;
float pixelSpeed;
unsigned int waitTime;
unsigned int characterPos;
unsigned int initialWait;
float initialPos;
CStdString suffix;
static const int defaultSpeed = 60;
private:
float m_averageFrameTime;
uint32_t m_lastFrameTime;
};
/*!
\ingroup textures
\brief
*/
class CGUIFont
{
public:
CGUIFont(const CStdString& strFontName, uint32_t style, color_t textColor,
color_t shadowColor, float lineSpacing, float origHeight, CGUIFontTTFBase *font);
virtual ~CGUIFont();
CStdString& GetFontName();
void DrawText( float x, float y, color_t color, color_t shadowColor,
const vecText &text, uint32_t alignment, float maxPixelWidth)
{
vecColors colors;
colors.push_back(color);
DrawText(x, y, colors, shadowColor, text, alignment, maxPixelWidth);
};
void DrawText( float x, float y, const vecColors &colors, color_t shadowColor,
const vecText &text, uint32_t alignment, float maxPixelWidth);
void DrawScrollingText( float x, float y, const vecColors &colors, color_t shadowColor,
const vecText &text, uint32_t alignment, float maxPixelWidth, CScrollInfo &scrollInfo);
float GetTextWidth( const vecText &text );
float GetCharWidth( character_t ch );
float GetTextHeight(int numLines) const;
float GetLineHeight() const;
//! get font scale factor (rendered height / original height)
float GetScaleFactor() const;
void Begin();
void End();
uint32_t GetStyle() const { return m_style; };
static wchar_t RemapGlyph(wchar_t letter);
CGUIFontTTFBase* GetFont() const
{
return m_font;
}
void SetFont(CGUIFontTTFBase* font);
protected:
CStdString m_strFontName;
uint32_t m_style;
color_t m_shadowColor;
color_t m_textColor;
float m_lineSpacing;
float m_origHeight;
CGUIFontTTFBase *m_font; // the font object has the size information
private:
bool ClippedRegionIsEmpty(float x, float y, float width, uint32_t alignment) const;
};
#endif
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