com.compdfkit.ui.proxy.attach

Class CPDFInkAnnotAttachHelper

java.lang.Object

com.compdfkit.ui.proxy.attach.CPDFInkAnnotAttachHelper

All Implemented Interfaces:

IAnnotAttachHelper, IInkDrawCallback

public class CPDFInkAnnotAttachHelper
extends java.lang.Object
implements IAnnotAttachHelper, IInkDrawCallback

Nested Class Summary

Nested classes/interfaces inherited from interface com.compdfkit.ui.proxy.attach.IInkDrawCallback

IInkDrawCallback.Effect, IInkDrawCallback.Mode

Constructor Summary

Constructors

Constructor and Description
CPDFInkAnnotAttachHelper()

Method Summary

Modifier and Type	Method and Description
boolean	canRedo() Whether to support Redo, is a time-consuming method.
boolean	canUndo() Whether to support Undo, is a time-consuming method.
void	eraseDraw(float x, float y) 橡皮擦轨迹，擦除手绘轨迹中的点。 算法说明： 1.橡皮擦轨迹是一个一个的点连接起来的，而擦除的范围是以每一个点为中心，半径为radius的圆； 2.擦除mDrawing中的点的算法：取同一线条上相邻的两个点绘制线段，计算该线段与圆的交点： （1）如果线段的两个顶点在圆外，且与圆有两个交点，那么一个交点作为前一条线条的末尾，另一个交点作为后一条线条的开始； （2）如果线段的一个顶点在圆外，一个顶点在圆内，那么圆内的点抹去，交点作为一条线条上的点； （3）如果线段的两个顶点都在圆内，那么这两个点都抹去。
void	onClean() Clears canvas
void	onDraw(android.graphics.Canvas canvas) Implement this to do your drawing.
void	onInit(CPDFReaderView readerView, CPDFPageView pageView) Initialization, set initial value of CPDFReaderView and CPDFPageView in current class instance.
void	onRedo() Redo
void	onSave() Saves ink annotation
boolean	onTouchEvent(android.view.MotionEvent event) This method to handle touch screen motion events
void	onUndo() Undo
void	setEffect(IInkDrawCallback.Effect effect) Sets stroke effect, more: IInkDrawCallback.Effect
void	setMode(IInkDrawCallback.Mode mode) Sets drawing mode, more: IInkDrawCallback.Mode
void	setPDFPage(CPDFPage pdfPage) Sets page object of the document, more: CPDFPage

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CPDFInkAnnotAttachHelper

public CPDFInkAnnotAttachHelper()

Method Detail

onInit

public void onInit(CPDFReaderView readerView,
                   CPDFPageView pageView)

Description copied from interface: IAnnotAttachHelper

Initialization, set initial value of CPDFReaderView and CPDFPageView in current class instance.

Specified by:

onInit in interface IAnnotAttachHelper

Parameters:

readerView - Used for showing View in the whole document

pageView - Used for showing View of each page in the document.

setPDFPage

public void setPDFPage(CPDFPage pdfPage)

Description copied from interface: IAnnotAttachHelper

Sets page object of the document, more: CPDFPage

Specified by:

setPDFPage in interface IAnnotAttachHelper

Parameters:

pdfPage - Page object of the document, more: CPDFPage

onTouchEvent

public boolean onTouchEvent(android.view.MotionEvent event)

Description copied from interface: IAnnotAttachHelper

This method to handle touch screen motion events

Specified by:

onTouchEvent in interface IAnnotAttachHelper

Parameters:

event - The motion event.

Returns:

Whether to consume event

onDraw

public void onDraw(android.graphics.Canvas canvas)

Description copied from interface: IAnnotAttachHelper

Implement this to do your drawing.

Specified by:

onDraw in interface IAnnotAttachHelper

Parameters:

canvas - The canvas on which the background will be drawn

onUndo

public void onUndo()

Description copied from interface: IInkDrawCallback

Undo

Specified by:

onUndo in interface IInkDrawCallback

onRedo

public void onRedo()

Description copied from interface: IInkDrawCallback

Redo

Specified by:

onRedo in interface IInkDrawCallback

canUndo

public boolean canUndo()

Description copied from interface: IInkDrawCallback

Whether to support Undo, is a time-consuming method.

Specified by:

canUndo in interface IInkDrawCallback

canRedo

public boolean canRedo()

Description copied from interface: IInkDrawCallback

Whether to support Redo, is a time-consuming method.

Specified by:

canRedo in interface IInkDrawCallback

onClean

public void onClean()

Description copied from interface: IInkDrawCallback

Clears canvas

Specified by:

onClean in interface IInkDrawCallback

onSave

public void onSave()

Description copied from interface: IInkDrawCallback

Saves ink annotation

Specified by:

onSave in interface IInkDrawCallback

setMode

public void setMode(IInkDrawCallback.Mode mode)

Description copied from interface: IInkDrawCallback

Sets drawing mode, more: IInkDrawCallback.Mode

Specified by:

setMode in interface IInkDrawCallback

Parameters:

mode - Drawing mode, more: IInkDrawCallback.Mode

setEffect

public void setEffect(IInkDrawCallback.Effect effect)

Description copied from interface: IInkDrawCallback

Sets stroke effect, more: IInkDrawCallback.Effect

Specified by:

setEffect in interface IInkDrawCallback

Parameters:

effect - Stroke effect

eraseDraw

public void eraseDraw(float x,
                      float y)

橡皮擦轨迹，擦除手绘轨迹中的点。 算法说明： 1.橡皮擦轨迹是一个一个的点连接起来的，而擦除的范围是以每一个点为中心，半径为radius的圆； 2.擦除mDrawing中的点的算法：取同一线条上相邻的两个点绘制线段，计算该线段与圆的交点： （1）如果线段的两个顶点在圆外，且与圆有两个交点，那么一个交点作为前一条线条的末尾，另一个交点作为后一条线条的开始； （2）如果线段的一个顶点在圆外，一个顶点在圆内，那么圆内的点抹去，交点作为一条线条上的点； （3）如果线段的两个顶点都在圆内，那么这两个点都抹去。