irrlicht/source/Irrlicht/CGUIFont.h

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "IGUIFontBitmap.h"
#include "irrString.h"
#include "IReadFile.h"
#include "irrArray.h"
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#include <map>
namespace irr
{
namespace video
{
class IVideoDriver;
class IImage;
}
namespace gui
{
class IGUIEnvironment;
class CGUIFont : public IGUIFontBitmap
{
public:
//! constructor
CGUIFont(IGUIEnvironment* env, const io::path& filename);
//! destructor
virtual ~CGUIFont();
//! loads a font from a texture file
bool load(const io::path& filename);
//! loads a font from a texture file
bool load(io::IReadFile* file);
//! draws an text and clips it to the specified rectangle if wanted
virtual void draw(const core::stringw& text, const core::rect<s32>& position,
video::SColor color, bool hcenter=false,
bool vcenter=false, const core::rect<s32>* clip=0) override;
//! returns the dimension of a text
core::dimension2d<u32> getDimension(const wchar_t* text) const override;
//! Calculates the index of the character in the text which is on a specific position.
s32 getCharacterFromPos(const wchar_t* text, s32 pixel_x) const override;
//! Returns the type of this font
EGUI_FONT_TYPE getType() const override { return EGFT_BITMAP; }
//! set an Pixel Offset on Drawing ( scale position on width )
void setKerningWidth (s32 kerning) override;
void setKerningHeight (s32 kerning) override;
//! set an Pixel Offset on Drawing ( scale position on width )
s32 getKerningWidth(const wchar_t* thisLetter=0, const wchar_t* previousLetter=0) const override;
s32 getKerningHeight() const override;
//! gets the sprite bank
IGUISpriteBank* getSpriteBank() const override;
//! returns the sprite number from a given character
u32 getSpriteNoFromChar(const wchar_t *c) const override;
void setInvisibleCharacters( const wchar_t *s ) override;
private:
struct SFontArea
{
SFontArea() : underhang(0), overhang(0), width(0), spriteno(0) {}
s32 underhang;
s32 overhang;
s32 width;
u32 spriteno;
};
//! load & prepare font from ITexture
bool loadTexture(video::IImage * image, const io::path& name);
void readPositions(video::IImage* texture, s32& lowerRightPositions);
s32 getAreaFromCharacter (const wchar_t c) const;
void setMaxHeight();
void pushTextureCreationFlags(bool(&flags)[3]);
void popTextureCreationFlags(const bool(&flags)[3]);
core::array<SFontArea> Areas;
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std::map<wchar_t, s32> CharacterMap;
video::IVideoDriver* Driver;
IGUISpriteBank* SpriteBank;
IGUIEnvironment* Environment;
u32 WrongCharacter;
s32 MaxHeight;
s32 GlobalKerningWidth, GlobalKerningHeight;
core::stringw Invisible;
};
} // end namespace gui
} // end namespace irr