forked from AuroraMiddleware/gtk
gsktransform: Convert docs
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Matthias Clasen
Emmanuele Bassi
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7450427757
@ -19,16 +19,15 @@
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/**
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* SECTION:GskTransform
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* @Title: GskTransform
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* @Short_description: A description for transform operations
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* GskTransform: (ref-func gsk_transform_ref) (unref-func gsk_transform_unref)
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*
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* #GskTransform is an object to describe transform matrices. Unlike
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* #graphene_matrix_t, #GskTransform retains the steps in how a transform was
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* constructed, and allows inspecting them. It is modeled after the way
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* CSS describes transforms.
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* `GskTransform` is an object to describe transform matrices.
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*
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* #GskTransform objects are immutable and cannot be changed after creation.
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* Unlike `graphene_matrix_t`, `GskTransform` retains the steps in how
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* a transform was constructed, and allows inspecting them. It is modeled
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* after the way CSS describes transforms.
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*
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* `GskTransform` objects are immutable and cannot be changed after creation.
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* This means code can safely expose them as properties of objects without
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* having to worry about others changing them.
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*/
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@ -71,11 +70,6 @@ struct _GskTransformClass
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GskTransform *second_transform);
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};
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/**
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* GskTransform: (ref-func gsk_transform_ref) (unref-func gsk_transform_unref)
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*
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* The `GskTransform` structure contains only private data.
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*/
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G_DEFINE_BOXED_TYPE (GskTransform, gsk_transform,
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gsk_transform_ref,
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@ -614,7 +608,7 @@ static const GskTransformClass GSK_TRANSLATE_TRANSFORM_CLASS =
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* @next: (allow-none) (transfer full): the next transform
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* @point: the point to translate the transform by
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*
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* Translates @next in 2dimensional space by @point.
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* Translates @next in 2-dimensional space by @point.
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*
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* Returns: The new transform
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**/
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@ -849,10 +843,10 @@ normalize_angle (float angle)
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* @next: (allow-none) (transfer full): the next transform
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* @angle: the rotation angle, in degrees (clockwise)
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*
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* Rotates @next @angle degrees in 2D - or in 3Dspeak, around the z axis.
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* Rotates @next @angle degrees in 2D - or in 3D-speak, around the z axis.
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*
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* Returns: The new transform
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**/
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*/
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GskTransform *
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gsk_transform_rotate (GskTransform *next,
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float angle)
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@ -976,10 +970,10 @@ static const GskTransformClass GSK_ROTATE3D_TRANSFORM_CLASS =
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*
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* Rotates @next @angle degrees around @axis.
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*
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* For a rotation in 2D space, use gsk_transform_rotate().
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* For a rotation in 2D space, use [method@Gsk.Transform.rotate]
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*
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* Returns: The new transform
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**/
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*/
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GskTransform *
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gsk_transform_rotate_3d (GskTransform *next,
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float angle,
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@ -1148,7 +1142,8 @@ static const GskTransformClass GSK_SCALE_TRANSFORM_CLASS =
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* @factor_y: scaling factor on the Y axis
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*
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* Scales @next in 2-dimensional space by the given factors.
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* Use gsk_transform_scale_3d() to scale in all 3 dimensions.
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*
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* Use [method@Gsk.Transform.scale_3d] to scale in all 3 dimensions.
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*
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* Returns: The new transform
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**/
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@ -1296,14 +1291,15 @@ static const GskTransformClass GSK_PERSPECTIVE_TRANSFORM_CLASS =
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* flattened pyramid and therefore a more pronounced
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* perspective effect.
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*
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* Applies a perspective projection transform. This transform
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* scales points in X and Y based on their Z value, scaling
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* points with positive Z values away from the origin, and
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* Applies a perspective projection transform.
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*
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* This transform scales points in X and Y based on their Z value,
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* scaling points with positive Z values away from the origin, and
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* those with negative Z values towards the origin. Points
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* on the z=0 plane are unchanged.
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*
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* Returns: The new transform
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**/
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*/
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GskTransform *
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gsk_transform_perspective (GskTransform *next,
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float depth)
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@ -1339,11 +1335,11 @@ gsk_transform_finalize (GskTransform *self)
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/**
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* gsk_transform_ref:
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* @self: (allow-none): a #GskTransform
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* @self: (allow-none): a `GskTransform`
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*
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* Acquires a reference on the given #GskTransform.
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* Acquires a reference on the given `GskTransform`.
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*
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* Returns: (transfer none): the #GskTransform with an additional reference
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* Returns: (transfer none): the `GskTransform` with an additional reference
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*/
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GskTransform *
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gsk_transform_ref (GskTransform *self)
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@ -1356,9 +1352,9 @@ gsk_transform_ref (GskTransform *self)
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/**
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* gsk_transform_unref:
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* @self: (allow-none): a #GskTransform
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* @self: (allow-none): a `GskTransform`
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*
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* Releases a reference on the given #GskTransform.
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* Releases a reference on the given `GskTransform`.
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*
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* If the reference was the last, the resources associated to the @self are
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* freed.
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@ -1374,12 +1370,15 @@ gsk_transform_unref (GskTransform *self)
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/**
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* gsk_transform_print:
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* @self: (allow-none): a #GskTransform
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* @self: (allow-none): a `GskTransform`
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* @string: The string to print into
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*
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* Converts @self into a human-readable string representation suitable
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* for printing that can later be parsed with gsk_transform_parse().
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**/
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* for printing.
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*
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* The result of this function can later be parsed with
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* [func@Gsk.Transform.parse].
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*/
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void
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gsk_transform_print (GskTransform *self,
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GString *string)
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@ -1405,14 +1404,14 @@ gsk_transform_print (GskTransform *self,
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* gsk_transform_to_string:
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* @self: (allow-none): a #GskTransform
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*
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* Converts a matrix into a string that is suitable for
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* printing and can later be parsed with gsk_transform_parse().
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* Converts a matrix into a string that is suitable for printing.
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*
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* This is a wrapper around gsk_transform_print(), see that function
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* for details.
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* The resulting string can be parsed with [func@Gsk.Transform.parse].
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*
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* This is a wrapper around [method@Gsk.Transform.print].
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*
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* Returns: A new string for @self
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**/
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*/
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char *
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gsk_transform_to_string (GskTransform *self)
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{
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@ -1427,12 +1426,13 @@ gsk_transform_to_string (GskTransform *self)
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/**
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* gsk_transform_to_matrix:
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* @self: (allow-none): a #GskTransform
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* @self: (allow-none): a `GskTransform`
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* @out_matrix: (out caller-allocates): The matrix to set
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*
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* Computes the actual value of @self and stores it in @out_matrix.
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*
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* The previous value of @out_matrix will be ignored.
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**/
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*/
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void
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gsk_transform_to_matrix (GskTransform *self,
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graphene_matrix_t *out_matrix)
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@ -1460,21 +1460,21 @@ gsk_transform_to_matrix (GskTransform *self,
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* @out_dx: (out): return location for the x0 member
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* @out_dy: (out): return location for the y0 member
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*
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* Converts a #GskTransform to a 2D transformation
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* matrix.
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* Converts a `GskTransform` to a 2D transformation matrix.
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*
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* @self must be a 2D transformation. If you are not
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* sure, use gsk_transform_get_category() >=
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* sure, use gsk_transform_get_category() >=
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* %GSK_TRANSFORM_CATEGORY_2D to check.
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*
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* The returned values have the following layout:
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*
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* |[<!-- language="plain" -->
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* ```
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* | xx yx | | a b 0 |
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* | xy yy | = | c d 0 |
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* | dx dy | | tx ty 1 |
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* ]|
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* ```
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*
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* This function can be used to convert between a #GskTransform
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* This function can be used to convert between a `GskTransform`
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* and a matrix type from other 2D drawing libraries, in particular
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* Cairo.
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*/
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@ -1518,7 +1518,7 @@ gsk_transform_to_2d (GskTransform *self,
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/**
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* gsk_transform_to_affine:
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* @self: a #GskTransform
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* @self: a `GskTransform`
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* @out_scale_x: (out): return location for the scale
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* factor in the x direction
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* @out_scale_y: (out): return location for the scale
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@ -1528,8 +1528,8 @@ gsk_transform_to_2d (GskTransform *self,
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* @out_dy: (out): return location for the translation
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* in the y direction
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*
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* Converts a #GskTransform to 2D affine transformation
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* factors.
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* Converts a `GskTransform` to 2D affine transformation factors.
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*
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* @self must be a 2D transformation. If you are not
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* sure, use gsk_transform_get_category() >=
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* %GSK_TRANSFORM_CATEGORY_2D_AFFINE to check.
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@ -1584,13 +1584,14 @@ gsk_transform_to_affine (GskTransform *self,
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/**
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* gsk_transform_to_translate:
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* @self: a #GskTransform
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* @self: a `GskTransform`
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* @out_dx: (out): return location for the translation
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* in the x direction
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* @out_dy: (out): return location for the translation
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* in the y direction
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*
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* Converts a #GskTransform to a translation operation.
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* Converts a `GskTransform` to a translation operation.
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*
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* @self must be a 2D transformation. If you are not
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* sure, use gsk_transform_get_category() >=
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* %GSK_TRANSFORM_CATEGORY_2D_TRANSLATE to check.
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@ -1638,10 +1639,10 @@ gsk_transform_to_translate (GskTransform *self,
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* @next: (allow-none) (transfer full): Transform to apply @other to
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* @other: (allow-none): Transform to apply
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*
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* Applies all the operations from @other to @next.
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* Applies all the operations from @other to @next.
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*
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* Returns: The new transform
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**/
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*/
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GskTransform *
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gsk_transform_transform (GskTransform *next,
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GskTransform *other)
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@ -1678,7 +1679,7 @@ gsk_transform_transform (GskTransform *next,
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*
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* Returns: (nullable): The inverted transform or %NULL if the transform
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* cannot be inverted.
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**/
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*/
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GskTransform *
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gsk_transform_invert (GskTransform *self)
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{
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@ -1705,7 +1706,7 @@ gsk_transform_invert (GskTransform *self)
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* Checks two transforms for equality.
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*
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* Returns: %TRUE if the two transforms perform the same operation.
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**/
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*/
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gboolean
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gsk_transform_equal (GskTransform *first,
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GskTransform *second)
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@ -1748,11 +1749,13 @@ GskTransformCategory
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/*
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* gsk_transform_new: (constructor):
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*
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* Creates a new identity transform. This function is meant to be used by language
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* Creates a new identity transform.
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*
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* This function is meant to be used by language
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* bindings. For C code, this is equivalent to using %NULL.
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*
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* Returns: A new identity transform
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**/
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*/
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GskTransform *
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gsk_transform_new (void)
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{
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@ -1761,14 +1764,15 @@ gsk_transform_new (void)
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/**
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* gsk_transform_transform_bounds:
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* @self: a #GskTransform
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* @rect: a #graphene_rect_t
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* @self: a `GskTransform`
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* @rect: a `graphene_rect_t`
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* @out_rect: (out caller-allocates): return location for the bounds
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* of the transformed rectangle
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*
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* Transforms a #graphene_rect_t using the given transform @self.
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* Transforms a `graphene_rect_t` using the given transform @self.
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*
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* The result is the bounding box containing the coplanar quad.
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**/
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*/
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void
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gsk_transform_transform_bounds (GskTransform *self,
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const graphene_rect_t *rect,
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@ -1824,12 +1828,12 @@ gsk_transform_transform_bounds (GskTransform *self,
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/**
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* gsk_transform_transform_point:
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* @self: a #GskTransform
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* @point: a #graphene_point_t
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* @self: a `GskTransform`
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* @point: a `graphene_point_t`
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* @out_point: (out caller-allocates): return location for
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* the transformed point
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*
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* Transforms a #graphene_point_t using the given transform @self.
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* Transforms a `graphene_point_t` using the given transform @self.
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*/
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void
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gsk_transform_transform_point (GskTransform *self,
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@ -2134,7 +2138,7 @@ fail:
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* returned and %NULL is put in @out_transform.
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*
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* Returns: %TRUE if @string described a valid transform.
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**/
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*/
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gboolean
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gsk_transform_parse (const char *string,
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GskTransform **out_transform)
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