Class Canvas

java.lang.Object

org.ofdrw.layout.element.Div<Canvas>

org.ofdrw.layout.element.canvas.Canvas

All Implemented Interfaces:

ElementSplit, RenderPrepare

Direct Known Subclasses:

CanvasBase, Cell

public class Canvas
extends Div<Canvas>

画板

用于更加自由的向页面中加入内容

绘制行为详见渲染器：CanvasRender

Since:

2020-05-01 11:04:46

Author:

权观宇

Constructor Summary

Constructors

Constructor	Description
Canvas(double x, double y, double w, double h)	在指定位置 创建Canvas对象
Canvas(Double width, Double height)	创建Canvas对象
Canvas(Double width, Double height, Drawer drawer)	创建Canvas对象，并指定绘制器
Canvas(PageLayout style)	创建Canvas对象

Method Summary

Modifier and Type	Method	Description
Rectangle	doPrepare(Double widthLimit)	Canvas 不接受宽度重设
String	elementType()	获取元素类型
Drawer	getDrawer()
org.ofdrw.core.basicStructure.pageObj.layer.block.CT_PageBlock	getPreferBlock()	获取 优先使用的页面块
Canvas	setDrawer(Drawer drawer)	在进入渲染器之前可以对Canvas的绘制进行重设
void	setPreferBlock(org.ofdrw.core.basicStructure.pageObj.layer.block.CT_PageBlock preferBlock)	设置 优先使用的页面块

Methods inherited from class Div

box, clone, contentSplitAdjust, copyTo, getBackgroundColor, getBorder, getBorderBottom, getBorderColor, getBorderDash, getBorderLeft, getBorderRight, getBorderTop, getClear, getDisplay, getFloat, getHeight, getLayer, getLeft, getMargin, getMarginBottom, getMarginLeft, getMarginRight, getMarginTop, getOnRenderFinish, getOpacity, getPadding, getPaddingBottom, getPaddingLeft, getPaddingRight, getPaddingTop, getPosition, getRight, getTop, getWidth, getX, getY, heightPlus, isBlockElement, isIntegrity, isNoBorder, isPlaceholder, onRenderFinish, placeholder, placeholder, setBackgroundColor, setBackgroundColor, setBackgroundColor, setBorder, setBorderBottom, setBorderColor, setBorderColor, setBorderColor, setBorderDash, setBorderLeft, setBorderRight, setBorderTop, setBox, setClear, setDisplay, setFloat, setHeight, setIntegrity, setLayer, setLeft, setMargin, setMarginBottom, setMarginLeft, setMarginRight, setMarginTop, setOpacity, setPadding, setPaddingBottom, setPaddingLeft, setPaddingRight, setPaddingTop, setPlaceholder, setPosition, setRight, setTop, setWidth, setX, setXY, setY, split, toString, widthPlus

Modifier and Type	Method	Description
Rectangle	box()	获取模型区域大小
Div	clone()	克隆Div
<T extends Div> Div[]	contentSplitAdjust(double sHeight, T div1, T div2)	内容分割调整
<T extends Div> T	copyTo(T div)	Clone到制定对象
int[]	getBackgroundColor()
Double[]	getBorder()
Double	getBorderBottom()
int[]	getBorderColor()	获取 边框颜色
Double[]	getBorderDash()	获取 边框虚线样式
Double	getBorderLeft()
Double	getBorderRight()
Double	getBorderTop()
Clear	getClear()
Display	getDisplay()	获取 显示样式
AFloat	getFloat()
Double	getHeight()
org.ofdrw.core.basicStructure.pageObj.layer.Type	getLayer()	返回 图层
Double	getLeft()
Double[]	getMargin()
Double	getMarginBottom()
Double	getMarginLeft()
Double	getMarginRight()
Double	getMarginTop()
ElementRenderFinishHandler	getOnRenderFinish()	获取渲染完成回调事件
Double	getOpacity()	获取透明度
Double[]	getPadding()	获取内边距
Double	getPaddingBottom()
Double	getPaddingLeft()
Double	getPaddingRight()
Double	getPaddingTop()
Position	getPosition()
Double	getRight()
Double	getTop()
Double	getWidth()
Double	getX()
Double	getY()
double	heightPlus()
boolean	isBlockElement()	是否是块级元素
Boolean	isIntegrity()	元素是否可以拆分
boolean	isNoBorder()	是否存在边框
boolean	isPlaceholder()	判断是否为占位符
void	onRenderFinish(ElementRenderFinishHandler renderFinishHandler)	设置渲染完成回调事件
static Div	placeholder(double width, double height, AFloat aFloat)	空间占位符
static Div	placeholder(Rectangle rec, AFloat aFloat)	空间占位符
Canvas	setBackgroundColor(int[] backgroundColor)	设置背景颜色 RGB
Canvas	setBackgroundColor(int r, int g, int b)	设置背景颜色 RGB
Canvas	setBackgroundColor(String color)	设置 背景颜色
Canvas	setBorder(Double... border)	设置 边框宽度
Canvas	setBorderBottom(Double bottom)
Canvas	setBorderColor(int[] rgb)	设置 边框颜色
Canvas	setBorderColor(int r, int g, int b)	设置边框颜色
Canvas	setBorderColor(String color)	设置 边框颜色
Canvas	setBorderDash(Double... dash)	设置 边框虚线样式
Canvas	setBorderLeft(Double left)
Canvas	setBorderRight(Double right)
Canvas	setBorderTop(Double top)
Canvas	setBox(Double x, Double y, Double width, Double height)	设置盒式模型的主要属性
Canvas	setClear(Clear clear)
Canvas	setDisplay(Display display)	设置 显示样式
Canvas	setFloat(AFloat aFloat)	设置浮动样式
Canvas	setHeight(Double height)
Canvas	setIntegrity(Boolean integrity)
Canvas	setLayer(org.ofdrw.core.basicStructure.pageObj.layer.Type layer)	设置 图层
Canvas	setLeft(Double left)
Canvas	setMargin(Double... margin)	设置 外边距
Canvas	setMarginBottom(Double bottom)
Canvas	setMarginLeft(Double left)
Canvas	setMarginRight(Double right)
Canvas	setMarginTop(Double top)
Canvas	setOpacity(Double opacity)	设置透明度
Canvas	setPadding(Double... padding)	设置 内边距
Canvas	setPaddingBottom(Double bottom)
Canvas	setPaddingLeft(Double left)
Canvas	setPaddingRight(Double right)
Canvas	setPaddingTop(Double top)
Canvas	setPlaceholder(boolean placeholder)	设置是否为 占位符
Canvas	setPosition(Position position)
Canvas	setRight(Double right)
Canvas	setTop(Double top)
Canvas	setWidth(Double width)
Canvas	setX(Double x)
Canvas	setXY(Double x, Double y)	设置位置
Canvas	setY(Double y)
Div[]	split(double sHeight)	根据给定的高度切分元素
String	toString()
double	widthPlus()

Methods inherited from class Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Canvas

public Canvas(Double width,
 Double height,
 Drawer drawer)

创建Canvas对象，并指定绘制器

Canvas的宽度和高度必须在创建时指定

Parameters:

width - 宽度（单位：毫米mm）

height - 高度（单位：毫米mm）

drawer - Canvas内容的绘制器

Canvas

public Canvas(Double width,
 Double height)

创建Canvas对象

Canvas的宽度和高度必须在创建时指定

Parameters:

width - 宽度（单位：毫米mm）

height - 高度（单位：毫米mm）

Canvas

public Canvas(double x,
 double y,
 double w,
 double h)

在指定位置 创建Canvas对象

Parameters:

x - 画布左上角的x坐标

y - 画布左上角的y坐标

w - 画布的宽度

h - 画布的高度

Canvas

public Canvas(PageLayout style)

创建Canvas对象

Parameters:

style - 页面样式属性

Method Details

getDrawer

public Drawer getDrawer()

setDrawer

public Canvas setDrawer(Drawer drawer)

在进入渲染器之前可以对Canvas的绘制进行重设

Parameters:

drawer - 新的绘制器

Returns:

this

doPrepare

public Rectangle doPrepare(Double widthLimit)

Canvas 不接受宽度重设

Specified by:

doPrepare in interface RenderPrepare

Overrides:

doPrepare in class Div<Canvas>

Parameters:

widthLimit - 宽度限制

Returns:

元素尺寸

getPreferBlock

public org.ofdrw.core.basicStructure.pageObj.layer.block.CT_PageBlock getPreferBlock()

获取 优先使用的页面块

Canvas 生成的所有图元都将存储与该区块中，通常在渲染完成后可以获得非空的页面块。

Returns:

优先使用的页面块，null。

setPreferBlock

public void setPreferBlock(org.ofdrw.core.basicStructure.pageObj.layer.block.CT_PageBlock preferBlock)

设置 优先使用的页面块

Canvas 生成的所有图元都将存储与该区块中

注意：该方法具有一定危险性，若您不清楚该方法的作用，请勿使用。

Parameters:

preferBlock - 页面块

elementType

public String elementType()

获取元素类型

关联绘制器：CanvasRender

Overrides:

elementType in class Div<Canvas>

Returns:

Canvas