3 * Copyright 2006 The Android Open Source Project
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
10 #ifndef SkTextBox_DEFINED
11 #define SkTextBox_DEFINED
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.
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
36 Mode getMode() const { return (Mode)fMode; }
46 SpacingAlign getSpacingAlign() const { return (SpacingAlign)fSpacingAlign; }
47 void setSpacingAlign(SpacingAlign);
49 void getBox(SkRect*) const;
50 void setBox(const SkRect&);
51 void setBox(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom);
53 void getSpacing(SkScalar* mul, SkScalar* add) const;
54 void setSpacing(SkScalar mul, SkScalar add);
56 void draw(SkCanvas*, const char text[], size_t len, const SkPaint&);
58 void setText(const char text[], size_t len, const SkPaint&);
60 int countLines() const;
61 SkScalar getTextHeight() const;
65 SkScalar fSpacingMul, fSpacingAdd;
66 uint8_t fMode, fSpacingAlign;
69 const SkPaint* fPaint;
72 class SkTextLineBreaker {
74 static int CountLines(const char text[], size_t len, const SkPaint&, SkScalar width);