com.gwt.components.client
Class Canvas

java.lang.Object
  com.google.gwt.user.client.ui.UIObject
      com.google.gwt.user.client.ui.Widget
          com.google.gwt.user.client.ui.FocusWidget
              com.gwt.components.client.Canvas

All Implemented Interfaces:

com.google.gwt.event.dom.client.HasAllFocusHandlers, com.google.gwt.event.dom.client.HasAllKeyHandlers, com.google.gwt.event.dom.client.HasAllMouseHandlers, com.google.gwt.event.dom.client.HasBlurHandlers, com.google.gwt.event.dom.client.HasClickHandlers, com.google.gwt.event.dom.client.HasFocusHandlers, com.google.gwt.event.dom.client.HasKeyDownHandlers, com.google.gwt.event.dom.client.HasKeyPressHandlers, com.google.gwt.event.dom.client.HasKeyUpHandlers, com.google.gwt.event.dom.client.HasMouseDownHandlers, com.google.gwt.event.dom.client.HasMouseMoveHandlers, com.google.gwt.event.dom.client.HasMouseOutHandlers, com.google.gwt.event.dom.client.HasMouseOverHandlers, com.google.gwt.event.dom.client.HasMouseUpHandlers, com.google.gwt.event.dom.client.HasMouseWheelHandlers, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.Focusable, com.google.gwt.user.client.ui.HasFocus, com.google.gwt.user.client.ui.SourcesClickEvents, com.google.gwt.user.client.ui.SourcesFocusEvents, com.google.gwt.user.client.ui.SourcesKeyboardEvents, com.google.gwt.user.client.ui.SourcesMouseEvents, com.google.gwt.user.client.ui.SourcesMouseWheelEvents

Direct Known Subclasses:

DrawingView

public class Canvas
extends com.google.gwt.user.client.ui.FocusWidget
implements com.google.gwt.user.client.ui.SourcesMouseEvents, com.google.gwt.user.client.ui.SourcesMouseWheelEvents

Nested Class Summary

static class	Canvas.DrawingStyle
static class	Canvas.Gradient
static class	Canvas.LinearGradient
static class	Canvas.Pattern
static class	Canvas.RadialGradient

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled

Field Summary

protected int

modifiers

Fields inherited from class com.google.gwt.user.client.ui.UIObject

DEBUG_ID_PREFIX

Constructor Summary

Canvas(int width, int height)

Method Summary

void	addMouseListener(com.google.gwt.user.client.ui.MouseListener listener)
void	addMouseWheelListener(com.google.gwt.user.client.ui.MouseWheelListener listener)
void	arc(float x, float y, float radius, float startAngle, float endAngle, boolean anticlockwise)
void	arcTo(float x1, float y1, float x2, float y2, float radius)
void	beginPath()
void	bezierCurveTo(float cp1x, float cp1y, float cp2x, float cp2y, float x, float y)
void	clearRect(float x, float y, float w, float h)
void	clip()
void	closePath()
Canvas.LinearGradient	createLinearGradient(float x0, float y0, float x1, float y1)
Canvas.Pattern	createPattern(com.google.gwt.user.client.ui.Image img, String repetition)
Canvas.RadialGradient	createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1)
void	fill()
void	fillRect(float x, float y, float w, float h)
Object	getFillStyle()
float	getGlobalAlpha()
String	getGlobalCompositeOperation()
int	getHeight()
String	getLineCap()
String	getLineJoin()
float	getLineWidth()
float	getMiterLimit()
int	getModifiers()
float	getShadowBlur()
String	getShadowColor()
float	getShadowOffsetX()
float	getShadowOffsetY()
Object	getStrokeStyle()
int	getWidth()
protected void	init()
static boolean	isEmulation()
boolean	isPointInPath(float x, float y)
void	lineTo(float x, float y)
void	moveTo(float x, float y)
void	onBrowserEvent(com.google.gwt.user.client.Event event)
void	quadraticCurveTo(float cpx, float cpy, float x, float y)
void	rect(float x, float y, float w, float h)
void	removeMouseListener(com.google.gwt.user.client.ui.MouseListener listener)
void	removeMouseWheelListener(com.google.gwt.user.client.ui.MouseWheelListener listener)
void	resize(int width, int height)
void	restoreContext()
void	rotate(float angle)
void	saveContext()
void	scale(float x, float y)
void	setFillStyle(Canvas.DrawingStyle style)
void	setFillStyle(String style)
void	setGlobalAlpha(float alpha)
void	setGlobalCompositeOperation(String operation)
void	setHeight(int height)
void	setLineCap(String lineCap)
void	setLineJoin(String lineJoin)
void	setLineWidth(float lineWidth)
void	setMiterLimit(float miterLimit)
void	setShadowBlur(float blur)
void	setShadowColor(String style)
void	setShadowOffsetX(float x)
void	setShadowOffsetY(float y)
void	setStrokeStyle(Canvas.DrawingStyle style)
void	setStrokeStyle(String style)
void	setTransform(float m11, float m12, float m21, float m22, float dx, float dy)
void	setWidth(int width)
void	stroke()
void	strokeRect(float x, float y, float w, float h)
void	transform(float m11, float m12, float m21, float m22, float dx, float dy)
void	translate(float x, float y)

Methods inherited from class com.google.gwt.user.client.ui.FocusWidget

addBlurHandler, addClickHandler, addClickListener, addFocusHandler, addFocusListener, addKeyboardListener, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, addMouseDownHandler, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseUpHandler, addMouseWheelHandler, getFocusImpl, getTabIndex, isEnabled, removeClickListener, removeFocusListener, removeKeyboardListener, setAccessKey, setElement, setEnabled, setFocus, setTabIndex

Methods inherited from class com.google.gwt.user.client.ui.Widget

addDomHandler, addHandler, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isAttached, isOrWasAttached, onAttach, onDetach, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, setElement, setHeight, setPixelSize, setSize, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, toString, unsinkEvents

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

fireEvent

Field Detail

modifiers

protected int modifiers

Constructor Detail

Canvas

public Canvas(int width,
              int height)

Method Detail

getWidth

public int getWidth()

setWidth

public void setWidth(int width)

getHeight

public int getHeight()

setHeight

public void setHeight(int height)

resize

public void resize(int width,
                   int height)

isEmulation

public static boolean isEmulation()

init

protected void init()

addMouseListener

public void addMouseListener(com.google.gwt.user.client.ui.MouseListener listener)

Specified by:

addMouseListener in interface com.google.gwt.user.client.ui.SourcesMouseEvents

Overrides:

addMouseListener in class com.google.gwt.user.client.ui.FocusWidget

onBrowserEvent

public void onBrowserEvent(com.google.gwt.user.client.Event event)

Specified by:

onBrowserEvent in interface com.google.gwt.user.client.EventListener

Overrides:

onBrowserEvent in class com.google.gwt.user.client.ui.Widget

removeMouseListener

public void removeMouseListener(com.google.gwt.user.client.ui.MouseListener listener)

Specified by:

removeMouseListener in interface com.google.gwt.user.client.ui.SourcesMouseEvents

Overrides:

removeMouseListener in class com.google.gwt.user.client.ui.FocusWidget

getModifiers

public int getModifiers()

addMouseWheelListener

public void addMouseWheelListener(com.google.gwt.user.client.ui.MouseWheelListener listener)

Specified by:

addMouseWheelListener in interface com.google.gwt.user.client.ui.SourcesMouseWheelEvents

Overrides:

addMouseWheelListener in class com.google.gwt.user.client.ui.FocusWidget

removeMouseWheelListener

public void removeMouseWheelListener(com.google.gwt.user.client.ui.MouseWheelListener listener)

Specified by:

removeMouseWheelListener in interface com.google.gwt.user.client.ui.SourcesMouseWheelEvents

Overrides:

removeMouseWheelListener in class com.google.gwt.user.client.ui.FocusWidget

saveContext

public void saveContext()

restoreContext

public void restoreContext()

scale

public void scale(float x,
                  float y)

rotate

public void rotate(float angle)

translate

public void translate(float x,
                      float y)

transform

public void transform(float m11,
                      float m12,
                      float m21,
                      float m22,
                      float dx,
                      float dy)

setTransform

public void setTransform(float m11,
                         float m12,
                         float m21,
                         float m22,
                         float dx,
                         float dy)

getGlobalAlpha

public float getGlobalAlpha()

setGlobalAlpha

public void setGlobalAlpha(float alpha)

getGlobalCompositeOperation

public String getGlobalCompositeOperation()

setGlobalCompositeOperation

public void setGlobalCompositeOperation(String operation)

getStrokeStyle

public Object getStrokeStyle()

getFillStyle

public Object getFillStyle()

setStrokeStyle

public void setStrokeStyle(String style)

Parameters:

style - Can be either a java.lang.String valued to a valid CSS color or a DrawingStyle

setStrokeStyle

public void setStrokeStyle(Canvas.DrawingStyle style)

setFillStyle

public void setFillStyle(String style)

Parameters:

style - Can be either a java.lang.String valued to a valid CSS color or a DrawingStyle

setFillStyle

public void setFillStyle(Canvas.DrawingStyle style)

createLinearGradient

public Canvas.LinearGradient createLinearGradient(float x0,
                                                  float y0,
                                                  float x1,
                                                  float y1)

createRadialGradient

public Canvas.RadialGradient createRadialGradient(float x0,
                                                  float y0,
                                                  float r0,
                                                  float x1,
                                                  float y1,
                                                  float r1)

createPattern

public Canvas.Pattern createPattern(com.google.gwt.user.client.ui.Image img,
                                    String repetition)

getLineWidth

public float getLineWidth()

setLineWidth

public void setLineWidth(float lineWidth)

getLineCap

public String getLineCap()

setLineCap

public void setLineCap(String lineCap)

getLineJoin

public String getLineJoin()

setLineJoin

public void setLineJoin(String lineJoin)

getMiterLimit

public float getMiterLimit()

setMiterLimit

public void setMiterLimit(float miterLimit)

getShadowOffsetX

public float getShadowOffsetX()

setShadowOffsetX

public void setShadowOffsetX(float x)

getShadowOffsetY

public float getShadowOffsetY()

setShadowOffsetY

public void setShadowOffsetY(float y)

getShadowBlur

public float getShadowBlur()

setShadowBlur

public void setShadowBlur(float blur)

getShadowColor

public String getShadowColor()

setShadowColor

public void setShadowColor(String style)

clearRect

public void clearRect(float x,
                      float y,
                      float w,
                      float h)

fillRect

public void fillRect(float x,
                     float y,
                     float w,
                     float h)

strokeRect

public void strokeRect(float x,
                       float y,
                       float w,
                       float h)

beginPath

public void beginPath()

closePath

public void closePath()

moveTo

public void moveTo(float x,
                   float y)

lineTo

public void lineTo(float x,
                   float y)

quadraticCurveTo

public void quadraticCurveTo(float cpx,
                             float cpy,
                             float x,
                             float y)

bezierCurveTo

public void bezierCurveTo(float cp1x,
                          float cp1y,
                          float cp2x,
                          float cp2y,
                          float x,
                          float y)

arcTo

public void arcTo(float x1,
                  float y1,
                  float x2,
                  float y2,
                  float radius)

rect

public void rect(float x,
                 float y,
                 float w,
                 float h)

arc

public void arc(float x,
                float y,
                float radius,
                float startAngle,
                float endAngle,
                boolean anticlockwise)

fill

public void fill()

stroke

public void stroke()

clip

public void clip()

isPointInPath

public boolean isPointInPath(float x,
                             float y)