134 lines
6.6 KiB
ObjectPascal
134 lines
6.6 KiB
ObjectPascal
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{******************************************}
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{ }
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{ FastReport FMX v2.0 }
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{ Font parser }
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{ }
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{ Copyright (c) 1998-2013 }
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{ by Aleksey Mandrykin, }
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{ Fast Reports Inc. }
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{ }
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{******************************************}
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unit FMX.frxHorizontalHeaderClass;
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interface uses FMX.TTFHelpers, FMX.frxTrueTypeTable;
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type
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HorizontalHeader = packed record
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public Version: Cardinal;
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public Ascender: Smallint;
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public Descender: Smallint;
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public LineGap: Smallint;
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public advanceWidthMax: Word;
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public minLeftSideBearing: Smallint;
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public minRightSideBearing: Smallint;
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public xMaxExtent: Smallint;
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public caretSlopeRise: Smallint;
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public caretSlopeRun: Smallint;
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public reserved1: Smallint;
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public reserved2: Smallint;
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public reserved3: Smallint;
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public reserved4: Smallint;
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public reserved5: Smallint;
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public metricDataFormat: Smallint;
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public numberOfHMetrics: Word;
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end;
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HorizontalHeaderClass = class(TrueTypeTable)
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// Fields
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strict private horizontal_header: HorizontalHeader;
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// Methods
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public constructor Create(src: TrueTypeTable);
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strict private procedure ChangeEndian;
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public procedure Load(font: Pointer); override;
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public function Save(font: Pointer; offset: Cardinal): Cardinal; override;
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// Properties
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public property Ascender: Smallint read horizontal_header.Ascender;
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public property Descender: Smallint read horizontal_header.Descender;
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public property LineGap: Smallint read horizontal_header.LineGap;
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public property MaxWidth: Word read horizontal_header.advanceWidthMax;
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public property NumberOfHMetrics: Word read horizontal_header.NumberOfHMetrics;
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end;
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implementation
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// Methods
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constructor HorizontalHeaderClass.Create(src: TrueTypeTable);
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begin
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inherited Create(src);
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end;
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procedure HorizontalHeaderClass.ChangeEndian;
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begin
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self.horizontal_header.Version := TTF_Helpers.SwapUInt32(self.horizontal_header.Version);
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self.horizontal_header.Ascender := TTF_Helpers.SwapInt16(self.horizontal_header.Ascender);
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self.horizontal_header.Descender := TTF_Helpers.SwapInt16(self.horizontal_header.Descender);
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self.horizontal_header.LineGap := TTF_Helpers.SwapInt16(self.horizontal_header.LineGap);
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self.horizontal_header.advanceWidthMax := TTF_Helpers.SwapUInt16(self.horizontal_header.advanceWidthMax);
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self.horizontal_header.minLeftSideBearing := TTF_Helpers.SwapInt16(self.horizontal_header.minLeftSideBearing);
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self.horizontal_header.minRightSideBearing := TTF_Helpers.SwapInt16(self.horizontal_header.minRightSideBearing);
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self.horizontal_header.xMaxExtent := TTF_Helpers.SwapInt16(self.horizontal_header.xMaxExtent);
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self.horizontal_header.caretSlopeRise := TTF_Helpers.SwapInt16(self.horizontal_header.caretSlopeRise);
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self.horizontal_header.caretSlopeRun := TTF_Helpers.SwapInt16(self.horizontal_header.caretSlopeRun);
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self.horizontal_header.metricDataFormat := TTF_Helpers.SwapInt16(self.horizontal_header.metricDataFormat);
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self.horizontal_header.numberOfHMetrics := TTF_Helpers.SwapUInt16(self.horizontal_header.numberOfHMetrics)
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end;
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procedure HorizontalHeaderClass.Load(font: Pointer);
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var
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horizontal_header: ^HorizontalHeader;
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begin
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horizontal_header := TTF_Helpers.Increment(font, self.entry.offset);
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self.horizontal_header.advanceWidthMax := horizontal_header.advanceWidthMax;
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self.horizontal_header.Ascender := horizontal_header.Ascender;
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self.horizontal_header.caretSlopeRise := horizontal_header.caretSlopeRise;
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self.horizontal_header.caretSlopeRun := horizontal_header.caretSlopeRun;
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self.horizontal_header.Descender := horizontal_header.Descender;
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self.horizontal_header.LineGap := horizontal_header.LineGap;
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self.horizontal_header.metricDataFormat := horizontal_header.metricDataFormat;
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self.horizontal_header.minLeftSideBearing := horizontal_header.minLeftSideBearing;
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self.horizontal_header.minRightSideBearing := horizontal_header.minRightSideBearing;
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self.horizontal_header.numberOfHMetrics := horizontal_header.numberOfHMetrics;
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self.horizontal_header.reserved1 := horizontal_header.reserved1;
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self.horizontal_header.reserved2 := horizontal_header.reserved2;
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self.horizontal_header.reserved3 := horizontal_header.reserved3;
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self.horizontal_header.reserved4 := horizontal_header.reserved4;
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self.horizontal_header.reserved5 := horizontal_header.reserved5;
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self.horizontal_header.Version := horizontal_header.Version;
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self.horizontal_header.xMaxExtent := horizontal_header.xMaxExtent;
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self.ChangeEndian
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end;
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function HorizontalHeaderClass.Save(font: Pointer; offset: Cardinal): Cardinal;
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var
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horizontal_header: ^HorizontalHeader;
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begin
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self.entry.offset := offset;
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self.ChangeEndian;
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horizontal_header := TTF_Helpers.Increment(font, self.entry.offset);
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horizontal_header.advanceWidthMax := self.horizontal_header.advanceWidthMax;
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horizontal_header.Ascender := self.horizontal_header.Ascender;
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horizontal_header.caretSlopeRise := self.horizontal_header.caretSlopeRise;
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horizontal_header.caretSlopeRun := self.horizontal_header.caretSlopeRun;
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horizontal_header.Descender := self.horizontal_header.Descender;
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horizontal_header.LineGap := self.horizontal_header.LineGap;
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horizontal_header.metricDataFormat := self.horizontal_header.metricDataFormat;
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horizontal_header.minLeftSideBearing := self.horizontal_header.minLeftSideBearing;
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horizontal_header.minRightSideBearing := self.horizontal_header.minRightSideBearing;
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horizontal_header.numberOfHMetrics := self.horizontal_header.numberOfHMetrics;
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horizontal_header.reserved1 := self.horizontal_header.reserved1;
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horizontal_header.reserved2 := self.horizontal_header.reserved2;
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horizontal_header.reserved3 := self.horizontal_header.reserved3;
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horizontal_header.reserved4 := self.horizontal_header.reserved4;
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horizontal_header.reserved5 := self.horizontal_header.reserved5;
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horizontal_header.Version := self.horizontal_header.Version;
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horizontal_header.xMaxExtent := self.horizontal_header.xMaxExtent;
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self.ChangeEndian;
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Result := (offset + self.entry.length)
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end;
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END.
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