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2 | 2 |
3 /* | 3 /* |
4 * Copyright 2006 The Android Open Source Project | 4 * Copyright 2006 The Android Open Source Project |
5 * | 5 * |
6 * Use of this source code is governed by a BSD-style license that can be | 6 * Use of this source code is governed by a BSD-style license that can be |
7 * found in the LICENSE file. | 7 * found in the LICENSE file. |
8 */ | 8 */ |
9 | 9 |
10 | 10 |
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724 kUTF16_TextEncoding, //!< the text parameters are UTF16 | 724 kUTF16_TextEncoding, //!< the text parameters are UTF16 |
725 kUTF32_TextEncoding, //!< the text parameters are UTF32 | 725 kUTF32_TextEncoding, //!< the text parameters are UTF32 |
726 kGlyphID_TextEncoding //!< the text parameters are glyph indices | 726 kGlyphID_TextEncoding //!< the text parameters are glyph indices |
727 }; | 727 }; |
728 | 728 |
729 TextEncoding getTextEncoding() const { return (TextEncoding)fTextEncoding; } | 729 TextEncoding getTextEncoding() const { return (TextEncoding)fTextEncoding; } |
730 | 730 |
731 void setTextEncoding(TextEncoding encoding); | 731 void setTextEncoding(TextEncoding encoding); |
732 | 732 |
733 struct FontMetrics { | 733 struct FontMetrics { |
734 /** Flags which indicate the confidence level of various metrics. | |
735 A set flag indicates that the metric may be trusted. | |
736 */ | |
737 enum FontMetricsFlags { | |
738 kUnderlineThinknessIsValid_Flag = 1 << 0, | |
739 kUnderlinePositionIsValid_Flag = 1 << 1, | |
740 }; | |
741 | |
742 uint32_t fFlags; //!< Bit field to identify which values are un known | |
734 SkScalar fTop; //!< The greatest distance above the baseline fo r any glyph (will be <= 0) | 743 SkScalar fTop; //!< The greatest distance above the baseline fo r any glyph (will be <= 0) |
735 SkScalar fAscent; //!< The recommended distance above the baseline (will be <= 0) | 744 SkScalar fAscent; //!< The recommended distance above the baseline (will be <= 0) |
736 SkScalar fDescent; //!< The recommended distance below the baseline (will be >= 0) | 745 SkScalar fDescent; //!< The recommended distance below the baseline (will be >= 0) |
737 SkScalar fBottom; //!< The greatest distance below the baseline fo r any glyph (will be >= 0) | 746 SkScalar fBottom; //!< The greatest distance below the baseline fo r any glyph (will be >= 0) |
738 SkScalar fLeading; //!< The recommended distance to add between lin es of text (will be >= 0) | 747 SkScalar fLeading; //!< The recommended distance to add between lin es of text (will be >= 0) |
739 SkScalar fAvgCharWidth; //!< the average charactor width (>= 0) | 748 SkScalar fAvgCharWidth; //!< the average character width (>= 0) |
740 SkScalar fMaxCharWidth; //!< the max charactor width (>= 0) | 749 SkScalar fMaxCharWidth; //!< the max character width (>= 0) |
741 SkScalar fXMin; //!< The minimum bounding box x value for all gl yphs | 750 SkScalar fXMin; //!< The minimum bounding box x value for all gl yphs |
742 SkScalar fXMax; //!< The maximum bounding box x value for all gl yphs | 751 SkScalar fXMax; //!< The maximum bounding box x value for all gl yphs |
743 SkScalar fXHeight; //!< The height of an 'x' in px, or 0 if no 'x' in face | 752 SkScalar fXHeight; //!< The height of an 'x' in px, or 0 if no 'x' in face |
744 SkScalar fCapHeight; //!< The cap height (> 0), or 0 if cannot be de termined. | 753 SkScalar fCapHeight; //!< The cap height (> 0), or 0 if cannot be de termined. |
754 SkScalar fUnderlineThickness; //!< underline thickness, or 0 if canno t be determined | |
755 | |
756 /** Underline Position - position of the top of the Underline stroke re lative to the baseline. | |
reed1
2014/02/25 13:16:51
nit: exceeds 100 cols
h.joshi
2014/02/25 18:11:11
Okey, will make require changes.
On 2014/02/25 13
| |
757 This can have following values | |
758 - Positive - means underline should be drawn above baseline. | |
reed1
2014/02/25 13:16:51
Our other fontmetrics always follow's Skia coordin
h.joshi
2014/02/25 18:11:11
Okey, will make require changes same as done for a
| |
759 - Negative - means below baseline. | |
760 - Zero - mean underline should be drawn on baseline. | |
761 */ | |
762 SkScalar fUnderlinePosition; //!< underline position, or 0 if cannot be determined | |
763 | |
764 /** If the fontmetrics has a valid underlinethickness, return true, and set the | |
765 thickness param to that value. If it doesn't return false and ig nore the | |
766 thickness param. | |
767 */ | |
768 bool hasUnderlineThickness(SkScalar* thickness) const { | |
769 if (SkToBool(fFlags & kUnderlineThinknessIsValid_Flag)) | |
770 { | |
reed1
2014/02/25 13:16:51
Skia style places the { on the same line as the "i
h.joshi
2014/02/25 18:11:11
Okey, will make require changes.
On 2014/02/25 13
| |
771 *thickness = fUnderlineThickness; | |
772 return true; | |
773 } | |
774 return false; | |
775 } | |
776 | |
777 /** If the fontmetrics has a valid underlineposition, return true, and set the | |
778 thickness param to that value. If it doesn't return false and ig nore the | |
779 thickness param. | |
780 */ | |
781 bool hasUnderlinePosition(SkScalar* position) const { | |
782 if (SkToBool(fFlags & kUnderlinePositionIsValid_Flag)) | |
783 { | |
784 *position = fUnderlinePosition; | |
785 return true; | |
786 } | |
787 return false; | |
788 } | |
789 | |
745 }; | 790 }; |
746 | 791 |
747 /** Return the recommend spacing between lines (which will be | 792 /** Return the recommend spacing between lines (which will be |
748 fDescent - fAscent + fLeading). | 793 fDescent - fAscent + fLeading). |
749 If metrics is not null, return in it the font metrics for the | 794 If metrics is not null, return in it the font metrics for the |
750 typeface/pointsize/etc. currently set in the paint. | 795 typeface/pointsize/etc. currently set in the paint. |
751 @param metrics If not null, returns the font metrics for the | 796 @param metrics If not null, returns the font metrics for the |
752 current typeface/pointsize/etc setting in this | 797 current typeface/pointsize/etc setting in this |
753 paint. | 798 paint. |
754 @param scale If not 0, return width as if the canvas were scaled | 799 @param scale If not 0, return width as if the canvas were scaled |
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1079 #ifdef SK_BUILD_FOR_ANDROID | 1124 #ifdef SK_BUILD_FOR_ANDROID |
1080 SkPaintOptionsAndroid fPaintOptionsAndroid; | 1125 SkPaintOptionsAndroid fPaintOptionsAndroid; |
1081 | 1126 |
1082 // In order for the == operator to work properly this must be the last field | 1127 // In order for the == operator to work properly this must be the last field |
1083 // in the struct so that we can do a memcmp to this field's offset. | 1128 // in the struct so that we can do a memcmp to this field's offset. |
1084 uint32_t fGenerationID; | 1129 uint32_t fGenerationID; |
1085 #endif | 1130 #endif |
1086 }; | 1131 }; |
1087 | 1132 |
1088 #endif | 1133 #endif |
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