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comparison: gfx/skia/trunk/include/views/SkTextBox.h
gfx/skia/trunk/include/views/SkTextBox.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:9ddd31e43969 |
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| 1 | |
| 2 /* | |
| 3 * Copyright 2006 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkTextBox_DEFINED | |
| 11 #define SkTextBox_DEFINED | |
| 12 | |
| 13 #include "SkCanvas.h" | |
| 14 | |
| 15 /** \class SkTextBox | |
| 16 | |
| 17 SkTextBox is a helper class for drawing 1 or more lines of text | |
| 18 within a rectangle. The textbox is positioned and clipped by its Frame. | |
| 19 The Margin rectangle controls where the text is drawn relative to | |
| 20 the Frame. Line-breaks occur inside the Margin rectangle. | |
| 21 | |
| 22 Spacing is a linear equation used to compute the distance between lines | |
| 23 of text. Spacing consists of two scalars: mul and add, and the spacing | |
| 24 between lines is computed as: spacing = paint.getTextSize() * mul + add | |
| 25 */ | |
| 26 class SkTextBox { | |
| 27 public: | |
| 28 SkTextBox(); | |
| 29 | |
| 30 enum Mode { | |
| 31 kOneLine_Mode, | |
| 32 kLineBreak_Mode, | |
| 33 | |
| 34 kModeCount | |
| 35 }; | |
| 36 Mode getMode() const { return (Mode)fMode; } | |
| 37 void setMode(Mode); | |
| 38 | |
| 39 enum SpacingAlign { | |
| 40 kStart_SpacingAlign, | |
| 41 kCenter_SpacingAlign, | |
| 42 kEnd_SpacingAlign, | |
| 43 | |
| 44 kSpacingAlignCount | |
| 45 }; | |
| 46 SpacingAlign getSpacingAlign() const { return (SpacingAlign)fSpacingAlign; } | |
| 47 void setSpacingAlign(SpacingAlign); | |
| 48 | |
| 49 void getBox(SkRect*) const; | |
| 50 void setBox(const SkRect&); | |
| 51 void setBox(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom); | |
| 52 | |
| 53 void getSpacing(SkScalar* mul, SkScalar* add) const; | |
| 54 void setSpacing(SkScalar mul, SkScalar add); | |
| 55 | |
| 56 void draw(SkCanvas*, const char text[], size_t len, const SkPaint&); | |
| 57 | |
| 58 void setText(const char text[], size_t len, const SkPaint&); | |
| 59 void draw(SkCanvas*); | |
| 60 int countLines() const; | |
| 61 SkScalar getTextHeight() const; | |
| 62 | |
| 63 private: | |
| 64 SkRect fBox; | |
| 65 SkScalar fSpacingMul, fSpacingAdd; | |
| 66 uint8_t fMode, fSpacingAlign; | |
| 67 const char* fText; | |
| 68 size_t fLen; | |
| 69 const SkPaint* fPaint; | |
| 70 }; | |
| 71 | |
| 72 class SkTextLineBreaker { | |
| 73 public: | |
| 74 static int CountLines(const char text[], size_t len, const SkPaint&, SkScalar width); | |
| 75 }; | |
| 76 | |
| 77 #endif |
