mirror of
https://github.com/luanti-org/luanti.git
synced 2025-10-28 22:25:20 +01:00
97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
// 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 "IReferenceCounted.h"
|
|
#include "SColor.h"
|
|
#include "rect.h"
|
|
#include "irrString.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace gui
|
|
{
|
|
|
|
//! An enum for the different types of GUI font.
|
|
enum EGUI_FONT_TYPE
|
|
{
|
|
//! Bitmap fonts loaded from an XML file or a texture.
|
|
EGFT_BITMAP = 0,
|
|
|
|
//! Scalable vector fonts loaded from an XML file.
|
|
/** These fonts reside in system memory and use no video memory
|
|
until they are displayed. These are slower than bitmap fonts
|
|
but can be easily scaled and rotated. */
|
|
EGFT_VECTOR,
|
|
|
|
//! A font which uses a the native API provided by the operating system.
|
|
/** Currently not used. */
|
|
EGFT_OS,
|
|
|
|
//! An external font type provided by the user.
|
|
EGFT_CUSTOM
|
|
};
|
|
|
|
//! Font interface.
|
|
class IGUIFont : public virtual IReferenceCounted
|
|
{
|
|
public:
|
|
//! Draws some text and clips it to the specified rectangle if wanted.
|
|
/** \param text: Text to draw
|
|
\param position: Rectangle specifying position where to draw the text.
|
|
\param color: Color of the text
|
|
\param hcenter: Specifies if the text should be centered horizontally into the rectangle.
|
|
\param vcenter: Specifies if the text should be centered vertically into the rectangle.
|
|
\param clip: Optional pointer to a rectangle against which the text will be clipped.
|
|
If the pointer is null, no clipping will be done. */
|
|
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) = 0;
|
|
|
|
//! Calculates the width and height of a given string of text.
|
|
/** \return Returns width and height of the area covered by the text if
|
|
it would be drawn. */
|
|
virtual core::dimension2du getDimension(const wchar_t *text) const = 0;
|
|
|
|
//! Calculates the index of the character in the text which is on a specific position.
|
|
/** \param text: Text string.
|
|
\param pixel_x: X pixel position of which the index of the character will be returned.
|
|
\return Returns zero based index of the character in the text, and -1 if no no character
|
|
is on this position. (=the text is too short). */
|
|
virtual s32 getCharacterFromPos(const wchar_t *text, s32 pixel_x) const = 0;
|
|
|
|
//! Returns the type of this font
|
|
virtual EGUI_FONT_TYPE getType() const { return EGFT_CUSTOM; }
|
|
|
|
//! Sets global kerning width for the font.
|
|
virtual void setKerningWidth(s32 kerning) = 0;
|
|
|
|
//! Sets global kerning height for the font.
|
|
virtual void setKerningHeight(s32 kerning) = 0;
|
|
|
|
//! Gets kerning values (distance between letters) for the font. If no parameters are provided,
|
|
/** the global kerning distance is returned.
|
|
\param thisLetter: If this parameter is provided, the left side kerning
|
|
for this letter is added to the global kerning value. For example, a
|
|
space might only be one pixel wide, but it may be displayed as several
|
|
pixels.
|
|
\param previousLetter: If provided, kerning is calculated for both
|
|
letters and added to the global kerning value. For example, in a font
|
|
which supports kerning pairs a string such as 'Wo' may have the 'o'
|
|
tucked neatly under the 'W'.
|
|
*/
|
|
virtual core::vector2di getKerning(const wchar_t thisLetter = 0, const wchar_t previousLetter = 0) const = 0;
|
|
|
|
//! Define which characters should not be drawn by the font.
|
|
/** For example " " would not draw any space which is usually blank in
|
|
most fonts.
|
|
\param s String of symbols which are not send down to the videodriver
|
|
*/
|
|
virtual void setInvisibleCharacters(const wchar_t *s) = 0;
|
|
};
|
|
|
|
} // end namespace gui
|
|
} // end namespace irr
|