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gtk.gdk.Region — an object representing a set of pixels on the screen (new in PyGTK 2.10)

Synopsis

class gtk.gdk.Region(gobject.GBoxed):
    gtk.gdk.Region()
    def get_clipbox()
    def empty()
    def equal(other)
    def point_in(x, y)
    def rect_in(rect)
    def copy()
    def offset(dx, dy)
    def shrink(dx, dy)
    def union_with_rect(rect)
    def intersect(source2)
    def union(source2)
    def subtract(source2)
    def xor(source2)
Functions

    def gtk.gdk.region_rectangle(rectangle)

Description

A gtk.gdk.Region is an objrect holding a set of arbitrary pixels, and is usually used for clipping graphical operations (see the gtk.gdk.GC.set_clip_region() method).

Starting with PyGTK 2.14 gtk.gdk.Region objects are properly comparable. By Python rules, regions (being mutable) are now unhashable.

Constructor

    gtk.gdk.Region()

Returns :

a new gtk.gdk.Region object

Note

This constructor is available in PyGTK 2.10 and above.

Creates a new gtk.gdk.Region.

Methods

gtk.gdk.Region.get_clipbox

    def get_clipbox()

Returns :

returns the smallest rectangle which includes all of the region.

Note

This method is available in PyGTK 2.10 and above.

The get_clipbox() method returns the smallest rectangle which includes the entire region.

gtk.gdk.Region.empty

    def empty()

Returns :

True if the region is empty.

Note

This method is available in PyGTK 2.10 and above.

The empty() method returns True if the region is empty.

gtk.gdk.Region.equal

    def equal(other)

other :

a gtk.gdk.Region

Returns :

True if the region is equal to other

Note

This method is available in PyGTK 2.10 and above.

The equal() method returns True if the region specified by other is equal to this region.

Note

Since PyGTK 2.14 Python comparison operator (==) can be used for the same result.

gtk.gdk.Region.point_in

    def point_in(x, y)

x :

the x coordinate of a point.

y :

the y coordinate of a point.

Returns :

True if the point (x,y) is in the region.

Note

This method is available in PyGTK 2.10 and above.

The () method returns True if the point specified by the coordinates x and y is in a region.

gtk.gdk.Region.rect_in

    def rect_in(rect)

rect :

a rectangle (gtk.gdk.Rectangle or 4-tuple representing a rectangle)

Returns :

a value indicating whether rectangle is inside or outside the region.

Note

This method is available in PyGTK 2.10 and above.

The rect_in() method returns one of the GDK Overlap Type Constants depending whether the rectangle specified by rect is inside, outside, or partly inside this region.

gtk.gdk.Region.copy

    def copy()

Returns :

a new gtk.gdk.Region identical to the region

Note

This method is available in PyGTK 2.10 and above.

The copy() method returns a new gtk.gdk.Region identical to this region.

gtk.gdk.Region.offset

    def offset(dx, dy)

dx :

the distance to move this region horizontally.

dy :

the distance to move this region vertically.

Note

This method is available in PyGTK 2.10 and above.

The offset() method moves this region the distance specified by dx and dy.

gtk.gdk.Region.shrink

    def shrink(dx, dy)

dx :

the number of pixels to shrink this region horizontally.

dy :

the number of pixels to shrink this region vertically.

Note

This method is available in PyGTK 2.10 and above.

The shrink() method resizes this region by the amount specified by dx and dy. Positive values shrink the region. Negative values expand it.

gtk.gdk.Region.union_with_rect

    def union_with_rect(rect)

rect :

a rectangle

Note

This method is available in PyGTK 2.10 and above.

The union_with_rect() method sets the area of this region to the union of the areas of this region and the rectangle specified by rect. The resulting area is the set of pixels contained in either the region or rect. The value of rect is either a gtk.gdk.Rectangle or a 4-tuple containing the position and size of a rectangle.

gtk.gdk.Region.intersect

    def intersect(source2)

source2 :

a gtk.gdk.Region

Note

This method is available in PyGTK 2.10 and above.

The intersect() method sets the area of this region to the intersection of the areas of this region and the region specified by source2. The resulting area is the set of pixels contained in both this region and source2.

gtk.gdk.Region.union

    def union(source2)

source2 :

a gtk.gdk.Region.

Note

This method is available in PyGTK 2.10 and above.

The union() method sets the area of this region to the union of the areas of this region and the region specified by source2. The resulting area is the set of pixels contained in either this region or source2.

gtk.gdk.Region.subtract

    def subtract(source2)

source2 :

a gtk.gdk.Region.

Note

This method is available in PyGTK 2.10 and above.

The subtract() method sets the area of this region to the subtraction of the areas of this region and the region specified by source2. The resulting area is the set of pixels contained in this region but not in source2.

gtk.gdk.Region.xor

    def xor(source2)

source2 :

a gtk.gdk.Region.

Note

This method is available in PyGTK 2.10 and above.

The xor() method sets the area of this region to the exclusive-OR of the areas of this region and the region specified by source2. The resulting area is the set of pixels contained in either this region or source2 but not both.

Functions

gtk.gdk.region_rectangle

    def gtk.gdk.region_rectangle(rectangle)

rectangle :

a gtk.gdk.Rectangle or a 4-tuple representing a rectangle.

Returns :

a new gtk.gdk.Region

Note

This function is available in PyGTK 2.10 and above.

The gtk.gdk.region_rectangle() function creates a new gtk.gdk.Region containing the area specified by rectangle.

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