341 lines
8.3 KiB
C++
341 lines
8.3 KiB
C++
/*
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* Copyright 2005-2007, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _FONT_H_
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#define _FONT_H_
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#include <SupportDefs.h>
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#include <InterfaceDefs.h>
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class BPoint;
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#define B_FONT_FAMILY_LENGTH 63
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#define B_FONT_STYLE_LENGTH 63
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typedef char font_family[B_FONT_FAMILY_LENGTH + 1];
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typedef char font_style[B_FONT_STYLE_LENGTH + 1];
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// font spacing
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enum {
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B_CHAR_SPACING = 0,
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B_STRING_SPACING = 1,
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B_BITMAP_SPACING = 2,
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B_FIXED_SPACING = 3
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};
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enum font_direction {
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B_FONT_LEFT_TO_RIGHT = 0,
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B_FONT_RIGHT_TO_LEFT = 1
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};
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// font flags
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enum {
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B_DISABLE_ANTIALIASING = 0x00000001,
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B_FORCE_ANTIALIASING = 0x00000002
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};
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// truncation modes
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enum {
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B_TRUNCATE_END = 0,
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B_TRUNCATE_BEGINNING = 1,
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B_TRUNCATE_MIDDLE = 2,
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B_TRUNCATE_SMART = 3
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};
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// font encodings
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enum {
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B_UNICODE_UTF8 = 0,
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B_ISO_8859_1 = 1,
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B_ISO_8859_2 = 2,
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B_ISO_8859_3 = 3,
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B_ISO_8859_4 = 4,
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B_ISO_8859_5 = 5,
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B_ISO_8859_6 = 6,
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B_ISO_8859_7 = 7,
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B_ISO_8859_8 = 8,
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B_ISO_8859_9 = 9,
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B_ISO_8859_10 = 10,
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B_MACINTOSH_ROMAN = 11
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};
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// flags for get_font_family() and get_font_style()
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enum {
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B_HAS_TUNED_FONT = 0x0001,
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B_IS_FIXED = 0x0002
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};
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// font face flags
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enum {
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B_ITALIC_FACE = 0x0001,
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B_UNDERSCORE_FACE = 0x0002,
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B_NEGATIVE_FACE = 0x0004,
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B_OUTLINED_FACE = 0x0008,
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B_STRIKEOUT_FACE = 0x0010,
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B_BOLD_FACE = 0x0020,
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B_REGULAR_FACE = 0x0040
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};
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enum font_metric_mode {
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B_SCREEN_METRIC = 0,
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B_PRINTING_METRIC = 1
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};
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enum font_file_format {
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B_TRUETYPE_WINDOWS = 0,
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B_POSTSCRIPT_TYPE1_WINDOWS = 1
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};
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class unicode_block {
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public:
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inline unicode_block();
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inline unicode_block(uint64 block2, uint64 block1);
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inline bool Includes(const unicode_block &block) const;
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inline unicode_block operator&(const unicode_block &block) const;
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inline unicode_block operator|(const unicode_block &block) const;
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inline unicode_block &operator=(const unicode_block &block);
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inline bool operator==(const unicode_block &block) const;
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inline bool operator!=(const unicode_block &block) const;
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private:
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uint64 fData[2];
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};
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struct edge_info {
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float left;
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float right;
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};
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struct font_height {
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float ascent;
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float descent;
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float leading;
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};
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struct escapement_delta {
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float nonspace;
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float space;
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};
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struct font_cache_info {
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int32 sheared_font_penalty;
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int32 rotated_font_penalty;
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float oversize_threshold;
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int32 oversize_penalty;
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int32 cache_size;
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float spacing_size_threshold;
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};
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struct tuned_font_info {
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float size;
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float shear;
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float rotation;
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uint32 flags;
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uint16 face;
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};
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class BShape;
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class BString;
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class BFontPrivate;
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class BFont {
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public:
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BFont();
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BFont(const BFont &font);
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BFont(const BFont *font);
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status_t SetFamilyAndStyle(const font_family family,
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const font_style style);
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void SetFamilyAndStyle(uint32 code);
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status_t SetFamilyAndFace(const font_family family, uint16 face);
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void SetSize(float size);
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void SetShear(float shear);
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void SetRotation(float rotation);
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void SetFalseBoldWidth(float width);
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void SetSpacing(uint8 spacing);
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void SetEncoding(uint8 encoding);
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void SetFace(uint16 face);
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void SetFlags(uint32 flags);
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void GetFamilyAndStyle(font_family *family,
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font_style *style) const;
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uint32 FamilyAndStyle() const;
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float Size() const;
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float Shear() const;
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float Rotation() const;
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float FalseBoldWidth() const;
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uint8 Spacing() const;
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uint8 Encoding() const;
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uint16 Face() const;
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uint32 Flags() const;
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font_direction Direction() const;
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bool IsFixed() const;
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bool IsFullAndHalfFixed() const;
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BRect BoundingBox() const;
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unicode_block Blocks() const;
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font_file_format FileFormat() const;
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int32 CountTuned() const;
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void GetTunedInfo(int32 index, tuned_font_info *info) const;
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void TruncateString(BString* inOut, uint32 mode,
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float width) const;
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void GetTruncatedStrings(const char *stringArray[],
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int32 numStrings, uint32 mode, float width,
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BString resultArray[]) const;
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void GetTruncatedStrings(const char *stringArray[],
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int32 numStrings, uint32 mode, float width,
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char *resultArray[]) const;
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float StringWidth(const char *string) const;
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float StringWidth(const char *string, int32 length) const;
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void GetStringWidths(const char *stringArray[],
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const int32 lengthArray[], int32 numStrings,
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float widthArray[]) const;
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void GetEscapements(const char charArray[], int32 numChars,
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float escapementArray[]) const;
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void GetEscapements(const char charArray[], int32 numChars,
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escapement_delta *delta, float escapementArray[]) const;
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void GetEscapements(const char charArray[], int32 numChars,
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escapement_delta *delta, BPoint escapementArray[]) const;
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void GetEscapements(const char charArray[], int32 numChars,
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escapement_delta *delta, BPoint escapementArray[],
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BPoint offsetArray[]) const;
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void GetEdges(const char charArray[], int32 numBytes,
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edge_info edgeArray[]) const;
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void GetHeight(font_height *height) const;
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void GetBoundingBoxesAsGlyphs(const char charArray[],
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int32 numChars, font_metric_mode mode,
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BRect boundingBoxArray[]) const;
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void GetBoundingBoxesAsString(const char charArray[],
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int32 numChars, font_metric_mode mode,
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escapement_delta *delta, BRect boundingBoxArray[]) const;
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void GetBoundingBoxesForStrings(const char *stringArray[],
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int32 numStrings, font_metric_mode mode,
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escapement_delta deltas[],
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BRect boundingBoxArray[]) const;
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void GetGlyphShapes(const char charArray[], int32 numChars,
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BShape *glyphShapeArray[]) const;
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void GetHasGlyphs(const char charArray[], int32 numChars,
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bool hasArray[]) const;
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BFont& operator=(const BFont &font);
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bool operator==(const BFont &font) const;
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bool operator!=(const BFont &font) const;
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void PrintToStream() const;
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private:
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friend void _init_global_fonts_();
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uint16 fFamilyID;
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uint16 fStyleID;
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float fSize;
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float fShear;
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float fRotation;
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float fFalseBoldWidth;
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uint8 fSpacing;
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uint8 fEncoding;
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uint16 fFace;
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uint32 fFlags;
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mutable font_height fHeight;
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mutable uint32 fExtraFlags;
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uint32 _reserved[1];
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void _GetExtraFlags() const;
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void _GetBoundingBoxes(const char charArray[],
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int32 numChars, font_metric_mode mode,
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bool string_escapement, escapement_delta *delta,
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BRect boundingBoxArray[], bool asString) const;
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};
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// BFont related declarations
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extern const BFont *be_plain_font;
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extern const BFont *be_bold_font;
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extern const BFont *be_fixed_font;
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int32 count_font_families(void);
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status_t get_font_family(int32 index, font_family *name, uint32 *flags = NULL);
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int32 count_font_styles(font_family name);
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status_t get_font_style(font_family family, int32 index, font_style *name,
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uint32 *flags = NULL);
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status_t get_font_style(font_family family, int32 index, font_style *name,
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uint16 *face, uint32 *flags = NULL);
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bool update_font_families(bool checkOnly);
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// unicode_block inlines
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unicode_block::unicode_block()
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{
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fData[0] = fData[1] = 0LL;
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}
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unicode_block::unicode_block(uint64 block2, uint64 block1)
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{
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fData[0] = block1;
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fData[1] = block2;
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}
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bool
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unicode_block::Includes(const unicode_block &block) const
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{
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return (fData[0] & block.fData[0]) == block.fData[0]
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&& (fData[1] & block.fData[1]) == block.fData[1];
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}
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unicode_block
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unicode_block::operator&(const unicode_block &block) const
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{
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unicode_block result;
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result.fData[0] = fData[0] & block.fData[0];
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result.fData[1] = fData[1] & block.fData[1];
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return result;
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}
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unicode_block
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unicode_block::operator|(const unicode_block &block) const
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{
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unicode_block result;
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result.fData[0] = fData[0] | block.fData[0];
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result.fData[1] = fData[1] | block.fData[1];
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return result;
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}
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unicode_block &
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unicode_block::operator=(const unicode_block &block)
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{
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fData[0] = block.fData[0];
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fData[1] = block.fData[1];
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return *this;
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}
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bool
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unicode_block::operator==(const unicode_block &block) const
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{
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return fData[0] == block.fData[0] && fData[1] == block.fData[1];
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}
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bool
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unicode_block::operator!=(const unicode_block &block) const
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{
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return fData[0] != block.fData[0] || fData[1] != block.fData[1];
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}
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#endif /* _FONT_H_ */
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