mirror of https://github.com/axmolengine/axmol.git
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2006 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef SkTextBox_DEFINED
|
|
#define SkTextBox_DEFINED
|
|
|
|
#include "SkCanvas.h"
|
|
|
|
/** \class SkTextBox
|
|
|
|
SkTextBox is a helper class for drawing 1 or more lines of text
|
|
within a rectangle. The textbox is positioned and clipped by its Frame.
|
|
The Margin rectangle controls where the text is drawn relative to
|
|
the Frame. Line-breaks occur inside the Margin rectangle.
|
|
|
|
Spacing is a linear equation used to compute the distance between lines
|
|
of text. Spacing consists of two scalars: mul and add, and the spacing
|
|
between lines is computed as: spacing = paint.getTextSize() * mul + add
|
|
*/
|
|
class SkTextBox {
|
|
public:
|
|
SkTextBox();
|
|
|
|
enum Mode {
|
|
kOneLine_Mode,
|
|
kLineBreak_Mode,
|
|
|
|
kModeCount
|
|
};
|
|
Mode getMode() const { return (Mode)fMode; }
|
|
void setMode(Mode);
|
|
|
|
enum SpacingAlign {
|
|
kStart_SpacingAlign,
|
|
kCenter_SpacingAlign,
|
|
kEnd_SpacingAlign,
|
|
|
|
kSpacingAlignCount
|
|
};
|
|
SpacingAlign getSpacingAlign() const { return (SpacingAlign)fSpacingAlign; }
|
|
void setSpacingAlign(SpacingAlign);
|
|
|
|
void getBox(SkRect*) const;
|
|
void setBox(const SkRect&);
|
|
void setBox(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom);
|
|
|
|
void getSpacing(SkScalar* mul, SkScalar* add) const;
|
|
void setSpacing(SkScalar mul, SkScalar add);
|
|
|
|
void draw(SkCanvas*, const char text[], size_t len, const SkPaint&);
|
|
|
|
void setText(const char text[], size_t len, const SkPaint&);
|
|
void draw(SkCanvas*);
|
|
int countLines() const;
|
|
SkScalar getTextHeight() const;
|
|
|
|
private:
|
|
SkRect fBox;
|
|
SkScalar fSpacingMul, fSpacingAdd;
|
|
uint8_t fMode, fSpacingAlign;
|
|
const char* fText;
|
|
size_t fLen;
|
|
const SkPaint* fPaint;
|
|
};
|
|
|
|
class SkTextLineBreaker {
|
|
public:
|
|
static int CountLines(const char text[], size_t len, const SkPaint&, SkScalar width);
|
|
};
|
|
|
|
#endif
|
|
|