android.graphics.Region
Nested Classes
Summary
Constants
Public Constructors
Public Methods
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boolean |
contains(int x, int y) |
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int |
describeContents() |
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Path |
getBoundaryPath() |
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boolean |
getBoundaryPath(Path path) |
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Rect |
getBounds() |
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boolean |
getBounds(Rect r) |
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boolean |
isComplex() |
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boolean |
isEmpty() |
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boolean |
isRect() |
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boolean |
op(Region region1, Region region2, Region.Op op) |
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boolean |
op(Region region, Region.Op op) |
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boolean |
op(Rect rect, Region region, Region.Op op) |
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boolean |
op(Rect r, Region.Op op) |
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boolean |
op(int left, int top, int right, int bottom, Region.Op op) |
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boolean |
quickContains(Rect r) |
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boolean |
quickContains(int left, int top, int right, int bottom) |
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boolean |
quickReject(Rect r) |
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boolean |
quickReject(int left, int top, int right, int bottom) |
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boolean |
quickReject(Region rgn) |
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boolean |
set(Rect r) |
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boolean |
set(Region region) |
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boolean |
set(int left, int top, int right, int bottom) |
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void |
setEmpty() |
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boolean |
setPath(Path path, Region clip) |
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void |
translate(int dx, int dy, Region dst) |
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void |
translate(int dx, int dy) |
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final |
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boolean |
union(Rect r) |
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void |
writeToParcel(Parcel p, int flags) |
Protected Methods
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
Details
Constants
Public Constructors
public
Region()
Create an empty region
public
Region(Region region)
Return a copy of the specified region
public
Region(Rect r)
Return a region set to the specified rectangle
public
Region(int left, int top, int right, int bottom)
Return a region set to the specified rectangle
Public Methods
public
boolean
contains(int x, int y)
Return true if the region contains the specified point
public
int
describeContents()
Describe the kinds of special objects contained in this Parcelable's
marshalled representation.
public
Path
getBoundaryPath()
Return the boundary of the region as a new Path. If the region is empty,
the path will also be empty.
public
boolean
getBoundaryPath(Path path)
Set the path to the boundary of the region. If the region is empty, the
path will also be empty.
public
Rect
getBounds()
Return a new Rect set to the bounds of the region. If the region is
empty, the Rect will be set to [0, 0, 0, 0]
public
boolean
getBounds(Rect r)
Set the Rect to the bounds of the region. If the region is empty, the
Rect will be set to [0, 0, 0, 0]
public
boolean
isComplex()
Return true if the region contains more than one rectangle
public
boolean
isEmpty()
Return true if this region is empty
public
boolean
isRect()
Return true if the region contains a single rectangle
Set this region to the result of performing the Op on the specified
regions. Return true if the result is not empty.
public
boolean
op(Region region, Region.Op op)
Perform the specified Op on this region and the specified region. Return
true if the result of the op is not empty.
Set this region to the result of performing the Op on the specified rect
and region. Return true if the result is not empty.
Perform the specified Op on this region and the specified rect. Return
true if the result of the op is not empty.
public
boolean
op(int left, int top, int right, int bottom, Region.Op op)
Perform the specified Op on this region and the specified rect. Return
true if the result of the op is not empty.
public
boolean
quickContains(Rect r)
Return true if the region is a single rectangle (not complex) and it
contains the specified rectangle. Returning false is not a guarantee
that the rectangle is not contained by this region, but return true is a
guarantee that the rectangle is contained by this region.
public
boolean
quickContains(int left, int top, int right, int bottom)
Return true if the region is a single rectangle (not complex) and it
contains the specified rectangle. Returning false is not a guarantee
that the rectangle is not contained by this region, but return true is a
guarantee that the rectangle is contained by this region.
public
boolean
quickReject(Rect r)
Return true if the region is empty, or if the specified rectangle does
not intersect the region. Returning false is not a guarantee that they
intersect, but returning true is a guarantee that they do not.
public
boolean
quickReject(int left, int top, int right, int bottom)
Return true if the region is empty, or if the specified rectangle does
not intersect the region. Returning false is not a guarantee that they
intersect, but returning true is a guarantee that they do not.
public
boolean
quickReject(Region rgn)
Return true if the region is empty, or if the specified region does not
intersect the region. Returning false is not a guarantee that they
intersect, but returning true is a guarantee that they do not.
public
boolean
set(Rect r)
Set the region to the specified rectangle
public
boolean
set(Region region)
Set the region to the specified region.
public
boolean
set(int left, int top, int right, int bottom)
Set the region to the specified rectangle
public
void
setEmpty()
Set the region to the empty region
public
boolean
setPath(Path path, Region clip)
Set the region to the area described by the path and clip.
Return true if the resulting region is non-empty. This produces a region
that is identical to the pixels that would be drawn by the path
(with no antialiasing).
public
void
translate(int dx, int dy, Region dst)
Set the dst region to the result of translating this region by [dx, dy].
If this region is empty, then dst will be set to empty.
public
void
translate(int dx, int dy)
Translate the region by [dx, dy]. If the region is empty, do nothing.
public
final
boolean
union(Rect r)
public
void
writeToParcel(Parcel p, int flags)
Write the region and its pixels to the parcel. The region can be
rebuilt from the parcel by calling CREATOR.createFromParcel().
Parameters
p
| Parcel object to write the region data into
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Protected Methods
protected
void
finalize()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver. Subclasses can use this facility to guarantee
that any associated resources are cleaned up before the receiver is
garbage collected. Uncaught exceptions which are thrown during the
running of the method cause it to terminate immediately, but are
otherwise ignored.
Note: The virtual machine assumes that the implementation in class Object
is empty.