android.graphics
Class Canvas

java.lang.Object
  android.graphics.Canvas

public class Canvas
extends Object

Nested Class Summary

static class

Canvas.EdgeType

Field Summary

static int	CLIP_SAVE_FLAG
static int	CLIP_TO_LAYER_SAVE_FLAG
static int	FULL_COLOR_LAYER_SAVE_FLAG
static int	HAS_ALPHA_LAYER_SAVE_FLAG
static int	MATRIX_SAVE_FLAG

Constructor Summary

Canvas()

Canvas(Bitmap bitmap)

Method Summary

boolean	clipPath(Path path)
boolean	clipPath(Path path, Region.Op op)
boolean	clipRect(float f, float f1, float f2, float f3)
boolean	clipRect(float left, float top, float right, float bottom, Region.Op op)
boolean	clipRect(int i, int j, int k, int l)
boolean	clipRect(Rect rect)
boolean	clipRect(RectF rectf)
boolean	clipRect(RectF rect, Region.Op op)
boolean	clipRect(Rect rect, Region.Op op)
boolean	clipRegion(Region region)
boolean	clipRegion(Region region, Region.Op op)
void	concat(Matrix matrix)
void	drawArc(RectF oval, float startAngle, float sweepAngle, Paint paint)
void	drawARGB(int a, int r, int g, int b)
void	drawBitmap(Bitmap bitmap, float left, float top, Paint paint)
void	drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint)
void	drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint)
void	drawCircle(float cx, float cy, float radius, Paint paint)
void	drawColor(int color)
void	drawColor(int color, PorterDuff.Mode mode)
void	drawLine(float startX, float startY, float stopX, float stopY, Paint paint)
void	drawOval(RectF oval, Paint paint)
void	drawPaint(Paint paint)
void	drawPath(Path path, Paint paint)
void	drawPicture(Picture picture)
void	drawPoint(float f, float f1, Paint paint)
void	drawPoints(float[] af, int i, int j, Paint paint)
void	drawPoints(float[] pts, Paint paint)
void	drawPosText(char[] text, int index, int count, float[] pos, Paint paint)
void	drawPosText(String text, float[] pos, Paint paint)
void	drawRect(float left, float top, float right, float bottom, Paint paint)
void	drawRect(RectF rect, Paint paint)
void	drawRect(Rect r, Paint paint)
void	drawRGB(int r, int g, int b)
void	drawRoundRect(RectF rect, float rx, float ry, Paint paint)
void	drawText(char[] text, int index, int count, float x, float y, Paint paint)
void	drawText(CharSequence text, int start, int end, float x, float y, Paint paint)
void	drawText(String s, float f, float f1, Paint paint)
void	drawText(String text, int start, int end, float x, float y, Paint paint)
void	drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, float vOffset, Paint paint)
void	drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint)
protected void	finalize()
int	getBitmapHeight()
int	getBitmapWidth()
Rect	getClipBounds()
boolean	getClipBounds(Rect bounds)
Matrix	getCTM()
void	getCTM(Matrix ctm)
DrawFilter	getDrawFilter()
int	getSaveCount()
boolean	isBitmapOpaque()
boolean	quickReject(float left, float top, float right, float bottom, Canvas.EdgeType type)
boolean	quickReject(Path path, Canvas.EdgeType type)
boolean	quickReject(RectF rect, Canvas.EdgeType type)
void	restore()
void	restoreToCount(int i)
void	rotate(float f)
void	rotate(float degrees, float px, float py)
int	save()
int	save(int i)
int	saveLayer(float left, float top, float right, float bottom, Paint paint, int saveFlags)
int	saveLayer(RectF bounds, Paint paint, int saveFlags)
int	saveLayerAlpha(float left, float top, float right, float bottom, int alpha, int saveFlags)
int	saveLayerAlpha(RectF bounds, int alpha, int saveFlags)
void	scale(float f, float f1)
void	scale(float sx, float sy, float px, float py)
void	setDevice(Bitmap bitmap)
void	setDrawFilter(DrawFilter filter)
void	skew(float f, float f1)
void	translate(float f, float f1)

Methods inherited from class java.lang.Object

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

Field Detail

MATRIX_SAVE_FLAG

public static final int MATRIX_SAVE_FLAG

See Also:

Constant Field Values

CLIP_SAVE_FLAG

public static final int CLIP_SAVE_FLAG

See Also:

Constant Field Values

HAS_ALPHA_LAYER_SAVE_FLAG

public static final int HAS_ALPHA_LAYER_SAVE_FLAG

See Also:

Constant Field Values

FULL_COLOR_LAYER_SAVE_FLAG

public static final int FULL_COLOR_LAYER_SAVE_FLAG

See Also:

Constant Field Values

CLIP_TO_LAYER_SAVE_FLAG

public static final int CLIP_TO_LAYER_SAVE_FLAG

See Also:

Constant Field Values

Constructor Detail

Canvas

public Canvas()

Canvas

public Canvas(Bitmap bitmap)

Method Detail

setDevice

public void setDevice(Bitmap bitmap)

isBitmapOpaque

public boolean isBitmapOpaque()

getBitmapWidth

public int getBitmapWidth()

getBitmapHeight

public int getBitmapHeight()

save

public int save()

save

public int save(int i)

saveLayer

public int saveLayer(RectF bounds,
                     Paint paint,
                     int saveFlags)

saveLayer

public int saveLayer(float left,
                     float top,
                     float right,
                     float bottom,
                     Paint paint,
                     int saveFlags)

saveLayerAlpha

public int saveLayerAlpha(RectF bounds,
                          int alpha,
                          int saveFlags)

saveLayerAlpha

public int saveLayerAlpha(float left,
                          float top,
                          float right,
                          float bottom,
                          int alpha,
                          int saveFlags)

restore

public void restore()

getSaveCount

public int getSaveCount()

restoreToCount

public void restoreToCount(int i)

translate

public void translate(float f,
                      float f1)

scale

public void scale(float f,
                  float f1)

scale

public final void scale(float sx,
                        float sy,
                        float px,
                        float py)

rotate

public void rotate(float f)

rotate

public final void rotate(float degrees,
                         float px,
                         float py)

skew

public void skew(float f,
                 float f1)

concat

public void concat(Matrix matrix)

clipRect

public boolean clipRect(RectF rect,
                        Region.Op op)

clipRect

public boolean clipRect(Rect rect,
                        Region.Op op)

clipRect

public boolean clipRect(RectF rectf)

clipRect

public boolean clipRect(Rect rect)

clipRect

public boolean clipRect(float left,
                        float top,
                        float right,
                        float bottom,
                        Region.Op op)

clipRect

public boolean clipRect(float f,
                        float f1,
                        float f2,
                        float f3)

clipRect

public boolean clipRect(int i,
                        int j,
                        int k,
                        int l)

clipPath

public boolean clipPath(Path path,
                        Region.Op op)

clipPath

public boolean clipPath(Path path)

clipRegion

public boolean clipRegion(Region region,
                          Region.Op op)

clipRegion

public boolean clipRegion(Region region)

getDrawFilter

public DrawFilter getDrawFilter()

setDrawFilter

public void setDrawFilter(DrawFilter filter)

quickReject

public boolean quickReject(RectF rect,
                           Canvas.EdgeType type)

quickReject

public boolean quickReject(Path path,
                           Canvas.EdgeType type)

quickReject

public boolean quickReject(float left,
                           float top,
                           float right,
                           float bottom,
                           Canvas.EdgeType type)

getClipBounds

public boolean getClipBounds(Rect bounds)

getClipBounds

public final Rect getClipBounds()

getCTM

public void getCTM(Matrix ctm)

getCTM

public final Matrix getCTM()

drawRGB

public void drawRGB(int r,
                    int g,
                    int b)

drawARGB

public void drawARGB(int a,
                     int r,
                     int g,
                     int b)

drawColor

public void drawColor(int color)

drawColor

public void drawColor(int color,
                      PorterDuff.Mode mode)

drawPaint

public void drawPaint(Paint paint)

drawPoints

public void drawPoints(float[] af,
                       int i,
                       int j,
                       Paint paint)

drawPoints

public void drawPoints(float[] pts,
                       Paint paint)

drawPoint

public void drawPoint(float f,
                      float f1,
                      Paint paint)

drawLine

public void drawLine(float startX,
                     float startY,
                     float stopX,
                     float stopY,
                     Paint paint)

drawRect

public void drawRect(RectF rect,
                     Paint paint)

drawRect

public void drawRect(Rect r,
                     Paint paint)

drawRect

public void drawRect(float left,
                     float top,
                     float right,
                     float bottom,
                     Paint paint)

drawOval

public void drawOval(RectF oval,
                     Paint paint)

drawCircle

public void drawCircle(float cx,
                       float cy,
                       float radius,
                       Paint paint)

drawArc

public void drawArc(RectF oval,
                    float startAngle,
                    float sweepAngle,
                    Paint paint)

drawRoundRect

public void drawRoundRect(RectF rect,
                          float rx,
                          float ry,
                          Paint paint)

drawPath

public void drawPath(Path path,
                     Paint paint)

drawBitmap

public void drawBitmap(Bitmap bitmap,
                       float left,
                       float top,
                       Paint paint)

drawBitmap

public void drawBitmap(Bitmap bitmap,
                       Rect src,
                       RectF dst,
                       Paint paint)

drawBitmap

public void drawBitmap(Bitmap bitmap,
                       Rect src,
                       Rect dst,
                       Paint paint)

drawText

public void drawText(char[] text,
                     int index,
                     int count,
                     float x,
                     float y,
                     Paint paint)

drawText

public void drawText(String s,
                     float f,
                     float f1,
                     Paint paint)

drawText

public void drawText(String text,
                     int start,
                     int end,
                     float x,
                     float y,
                     Paint paint)

drawText

public void drawText(CharSequence text,
                     int start,
                     int end,
                     float x,
                     float y,
                     Paint paint)

drawPosText

public void drawPosText(char[] text,
                        int index,
                        int count,
                        float[] pos,
                        Paint paint)

drawPosText

public void drawPosText(String text,
                        float[] pos,
                        Paint paint)

drawTextOnPath

public void drawTextOnPath(char[] text,
                           int index,
                           int count,
                           Path path,
                           float hOffset,
                           float vOffset,
                           Paint paint)

drawTextOnPath

public void drawTextOnPath(String text,
                           Path path,
                           float hOffset,
                           float vOffset,
                           Paint paint)

drawPicture

public void drawPicture(Picture picture)

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable