haiku/headers/os/interface/Font.h

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/*
* Copyright 2005, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _FONT_H_
#define _FONT_H_
#include <SupportDefs.h>
#include <InterfaceDefs.h>
#define B_FONT_FAMILY_LENGTH 63
#define B_FONT_STYLE_LENGTH 63
typedef char font_family[B_FONT_FAMILY_LENGTH + 1];
typedef char font_style[B_FONT_STYLE_LENGTH + 1];
// font spacing
enum {
B_CHAR_SPACING = 0,
B_STRING_SPACING = 1,
B_BITMAP_SPACING = 2,
B_FIXED_SPACING = 3
};
enum font_direction {
B_FONT_LEFT_TO_RIGHT = 0,
B_FONT_RIGHT_TO_LEFT = 1
};
// font flags
enum {
B_DISABLE_ANTIALIASING = 0x00000001,
B_FORCE_ANTIALIASING = 0x00000002
};
// truncation modes
enum {
B_TRUNCATE_END = 0,
B_TRUNCATE_BEGINNING = 1,
B_TRUNCATE_MIDDLE = 2,
B_TRUNCATE_SMART = 3
};
// font encodings
enum {
B_UNICODE_UTF8 = 0,
B_ISO_8859_1 = 1,
B_ISO_8859_2 = 2,
B_ISO_8859_3 = 3,
B_ISO_8859_4 = 4,
B_ISO_8859_5 = 5,
B_ISO_8859_6 = 6,
B_ISO_8859_7 = 7,
B_ISO_8859_8 = 8,
B_ISO_8859_9 = 9,
B_ISO_8859_10 = 10,
B_MACINTOSH_ROMAN = 11
};
// flags for get_font_family() and get_font_style()
enum {
B_HAS_TUNED_FONT = 0x0001,
B_IS_FIXED = 0x0002
};
// font face flags
enum {
B_ITALIC_FACE = 0x0001,
B_UNDERSCORE_FACE = 0x0002,
B_NEGATIVE_FACE = 0x0004,
B_OUTLINED_FACE = 0x0008,
B_STRIKEOUT_FACE = 0x0010,
B_BOLD_FACE = 0x0020,
B_REGULAR_FACE = 0x0040
};
enum font_metric_mode {
B_SCREEN_METRIC = 0,
B_PRINTING_METRIC = 1
};
enum font_file_format {
B_TRUETYPE_WINDOWS = 0,
B_POSTSCRIPT_TYPE1_WINDOWS = 1
};
class unicode_block {
public:
inline unicode_block();
inline unicode_block(uint64 block2, uint64 block1);
inline bool Includes(const unicode_block &block) const;
inline unicode_block operator&(const unicode_block &block) const;
inline unicode_block operator|(const unicode_block &block) const;
inline unicode_block &operator=(const unicode_block &block);
inline bool operator==(const unicode_block &block) const;
inline bool operator!=(const unicode_block &block) const;
private:
uint64 fData[2];
};
struct edge_info {
float left;
float right;
};
struct font_height {
float ascent;
float descent;
float leading;
};
struct escapement_delta {
float nonspace;
float space;
};
struct font_cache_info {
int32 sheared_font_penalty;
int32 rotated_font_penalty;
float oversize_threshold;
int32 oversize_penalty;
int32 cache_size;
float spacing_size_threshold;
};
struct tuned_font_info {
float size;
float shear;
float rotation;
uint32 flags;
uint16 face;
};
class BShape;
class BString;
class BFontPrivate;
class BFont {
public:
BFont();
BFont(const BFont &font);
BFont(const BFont *font);
status_t SetFamilyAndStyle(const font_family family,
const font_style style);
void SetFamilyAndStyle(uint32 code);
status_t SetFamilyAndFace(const font_family family, uint16 face);
void SetSize(float size);
void SetShear(float shear);
void SetRotation(float rotation);
void SetFalseBoldWidth(float width);
void SetSpacing(uint8 spacing);
void SetEncoding(uint8 encoding);
void SetFace(uint16 face);
void SetFlags(uint32 flags);
void GetFamilyAndStyle(font_family *family,
font_style *style) const;
uint32 FamilyAndStyle() const;
float Size() const;
float Shear() const;
float Rotation() const;
float FalseBoldWidth() const;
uint8 Spacing() const;
uint8 Encoding() const;
uint16 Face() const;
uint32 Flags() const;
font_direction Direction() const;
bool IsFixed() const;
bool IsFullAndHalfFixed() const;
BRect BoundingBox() const;
unicode_block Blocks() const;
font_file_format FileFormat() const;
int32 CountTuned() const;
void GetTunedInfo(int32 index, tuned_font_info *info) const;
void TruncateString(BString* inOut, uint32 mode,
float width) const;
void GetTruncatedStrings(const char *stringArray[],
int32 numStrings, uint32 mode, float width,
BString resultArray[]) const;
void GetTruncatedStrings(const char *stringArray[],
int32 numStrings, uint32 mode, float width,
char *resultArray[]) const;
float StringWidth(const char *string) const;
float StringWidth(const char *string, int32 length) const;
void GetStringWidths(const char *stringArray[],
const int32 lengthArray[], int32 numStrings,
float widthArray[]) const;
void GetEscapements(const char charArray[], int32 numChars,
float escapementArray[]) const;
void GetEscapements(const char charArray[], int32 numChars,
escapement_delta *delta, float escapementArray[]) const;
void GetEscapements(const char charArray[], int32 numChars,
escapement_delta *delta, BPoint escapementArray[]) const;
void GetEscapements(const char charArray[], int32 numChars,
escapement_delta *delta, BPoint escapementArray[],
BPoint offsetArray[]) const;
void GetEdges(const char charArray[], int32 numBytes,
edge_info edgeArray[]) const;
void GetHeight(font_height *height) const;
void GetBoundingBoxesAsGlyphs(const char charArray[],
int32 numChars, font_metric_mode mode,
BRect boundingBoxArray[]) const;
void GetBoundingBoxesAsString(const char charArray[],
int32 numChars, font_metric_mode mode,
escapement_delta *delta, BRect boundingBoxArray[]) const;
void GetBoundingBoxesForStrings(const char *stringArray[],
int32 numStrings, font_metric_mode mode,
escapement_delta deltas[],
BRect boundingBoxArray[]) const;
void GetGlyphShapes(const char charArray[], int32 numChars,
BShape *glyphShapeArray[]) const;
void GetHasGlyphs(const char charArray[], int32 numChars,
bool hasArray[]) const;
BFont& operator=(const BFont &font);
bool operator==(const BFont &font) const;
bool operator!=(const BFont &font) const;
void PrintToStream() const;
private:
friend void _init_global_fonts_();
uint16 fFamilyID;
uint16 fStyleID;
float fSize;
float fShear;
float fRotation;
float fFalseBoldWidth;
uint8 fSpacing;
uint8 fEncoding;
uint16 fFace;
uint32 fFlags;
mutable font_height fHeight;
mutable uint32 fExtraFlags;
uint32 _reserved[1];
void _GetExtraFlags() const;
void _GetBoundingBoxes(const char charArray[],
int32 numChars, font_metric_mode mode,
bool string_escapement, escapement_delta *delta,
BRect boundingBoxArray[], bool asString) const;
};
// BFont related declarations
extern const BFont *be_plain_font;
extern const BFont *be_bold_font;
extern const BFont *be_fixed_font;
int32 count_font_families(void);
status_t get_font_family(int32 index, font_family *name, uint32 *flags = NULL);
int32 count_font_styles(font_family name);
status_t get_font_style(font_family family, int32 index, font_style *name,
uint32 *flags = NULL);
status_t get_font_style(font_family family, int32 index, font_style *name,
uint16 *face, uint32 *flags = NULL);
bool update_font_families(bool checkOnly);
// unicode_block inlines
unicode_block::unicode_block()
{
fData[0] = fData[1] = 0LL;
}
unicode_block::unicode_block(uint64 block2, uint64 block1)
{
fData[0] = block1;
fData[1] = block2;
}
bool
unicode_block::Includes(const unicode_block &block) const
{
return (fData[0] & block.fData[0]) == block.fData[0]
&& (fData[1] & block.fData[1]) == block.fData[1];
}
unicode_block
unicode_block::operator&(const unicode_block &block) const
{
unicode_block result;
result.fData[0] = fData[0] & block.fData[0];
result.fData[1] = fData[1] & block.fData[1];
return result;
}
unicode_block
unicode_block::operator|(const unicode_block &block) const
{
unicode_block result;
result.fData[0] = fData[0] | block.fData[0];
result.fData[1] = fData[1] | block.fData[1];
return result;
}
unicode_block &
unicode_block::operator=(const unicode_block &block)
{
fData[0] = block.fData[0];
fData[1] = block.fData[1];
return *this;
}
bool
unicode_block::operator==(const unicode_block &block) const
{
return fData[0] == block.fData[0] && fData[1] == block.fData[1];
}
bool
unicode_block::operator!=(const unicode_block &block) const
{
return fData[0] != block.fData[0] || fData[1] != block.fData[1];
}
#endif /* _FONT_H_ */