gsk4/org.gtkkn.bindings.gsk/TransformCategory

TransformCategory

enum TransformCategory : Enum<TransformCategory>

The categories of matrices relevant for GSK and GTK.

Note that any category includes matrices of all later categories. So if you want to for example check if a matrix is a 2D matrix, category >= GSK_TRANSFORM_CATEGORY_2D is the way to do this.

Also keep in mind that rounding errors may cause matrices to not conform to their categories. Otherwise, matrix operations done via multiplication will not worsen categories. So for the matrix multiplication C = A * B, category(C) = MIN (category(A), category(B)).

Entries

UNKNOWN

The category of the matrix has not been determined.

ANY

Analyzing the matrix concluded that it does not fit in any other category.

The matrix is a 3D matrix. This means that the w column (the last column) has the values (0, 0, 0, 1).

The matrix is a 2D matrix. This is equivalent to graphene_matrix_is_2d() returning true. In particular, this means that Cairo can deal with the matrix.

2D_AFFINE

The matrix is a combination of 2D scale and 2D translation operations. In particular, this means that any rectangle can be transformed exactly using this matrix.

2D_TRANSLATE

The matrix is a 2D translation.

IDENTITY

The matrix is the identity matrix.

Types

Companion

object Companion

Properties

name

val name: String

nativeValue

val nativeValue: <Error class: unknown class>

ordinal

val ordinal: Int

Functions

valueOf

fun valueOf(value: String): TransformCategory

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

values

fun values(): Array<TransformCategory>

Returns an array containing the constants of this enum type, in the order they're declared.