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path: Some documentation improvements
Among other things, add a quick summary of SVG path syntax, and add a few illustrations.
This commit is contained in:
Matthias Clasen
parent
857c22db32
commit
47ddc742fc
@ -34,5 +34,11 @@ base_url = "https://gitlab.gnome.org/GNOME/gtk/-/blob/main/"
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[extra]
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content_images = [
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"gtk-logo.svg",
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"images/caps-dark.png",
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"images/caps-light.png",
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"images/join-dark.png",
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"images/join-light.png",
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"images/path-dark.png",
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"images/path-light.png",
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]
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urlmap_file = "urlmap.js"
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BIN
docs/reference/gsk/images/caps-dark.png
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BIN
docs/reference/gsk/images/caps-dark.png
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Binary file not shown.
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After Width: | Height: | Size: 11 KiB |
BIN
docs/reference/gsk/images/caps-light.png
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BIN
docs/reference/gsk/images/caps-light.png
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Binary file not shown.
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After Width: | Height: | Size: 12 KiB |
81
docs/reference/gsk/images/caps.svg
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81
docs/reference/gsk/images/caps.svg
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@ -0,0 +1,81 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<svg
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width="210mm"
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viewBox="0 0 210 297"
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version="1.1"
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id="svg1"
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After Width: | Height: | Size: 3.6 KiB |
BIN
docs/reference/gsk/images/join-dark.png
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BIN
docs/reference/gsk/images/join-dark.png
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Binary file not shown.
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After Width: | Height: | Size: 18 KiB |
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docs/reference/gsk/images/join-light.png
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BIN
docs/reference/gsk/images/join-light.png
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Binary file not shown.
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After Width: | Height: | Size: 21 KiB |
72
docs/reference/gsk/images/join.svg
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72
docs/reference/gsk/images/join.svg
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@ -0,0 +1,72 @@
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xmlns:svg="http://www.w3.org/2000/svg">
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<sodipodi:namedview
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|
After Width: | Height: | Size: 4.1 KiB |
BIN
docs/reference/gsk/images/path-dark.png
Normal file
BIN
docs/reference/gsk/images/path-dark.png
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Binary file not shown.
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After Width: | Height: | Size: 18 KiB |
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docs/reference/gsk/images/path-light.png
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docs/reference/gsk/images/path-light.png
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docs/reference/gsk/images/path.svg
Normal file
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@ -0,0 +1,108 @@
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After Width: | Height: | Size: 4.4 KiB |
@ -220,6 +220,11 @@ typedef enum {
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*
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* The default line cap style is `GSK_LINE_CAP_BUTT`.
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*
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* <picture>
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* <source srcset="caps-dark.png" media="(prefers-color-scheme: dark)">
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* <img alt="Line Cap Styles" src="caps-light.png">
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* </picture>
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*
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* New entries may be added in future versions.
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*
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* Since: 4.14
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@ -242,6 +247,11 @@ typedef enum {
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*
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* The default line join style is `GSK_LINE_JOIN_MITER`.
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*
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* <picture>
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* <source srcset="join-dark.png" media="(prefers-color-scheme: dark)">
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* <img alt="Line Join Styles" src="join-light.png">
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* </picture>
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*
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* New entries may be added in future versions.
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*
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* Since: 4.14
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@ -30,19 +30,25 @@
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* GskPath:
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*
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* A `GskPath` describes lines and curves that are more complex
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* than simple rectangles. Paths can used for rendering (filling or
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* stroking) and for animations (e.g. as trajectories).
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* than simple rectangles.
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*
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* Paths can used for rendering (filling or stroking) and for animations
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* (e.g. as trajectories).
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*
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* `GskPath` is an immutable, opaque, reference-counted struct.
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* After creation, you cannot change the types it represents.
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* Instead, new `GskPath` objects have to be created.
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*
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* The [struct@Gsk.PathBuilder] structure is meant to help in this endeavor.
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* After creation, you cannot change the types it represents. Instead,
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* new `GskPath` objects have to be created. The [struct@Gsk.PathBuilder]
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* structure is meant to help in this endeavor.
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*
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* Conceptually, a path consists of zero or more contours (continous, connected
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* curves), each of which may or may not be closed. Contours are typically
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* constructed from Bézier segments.
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*
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* <picture>
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* <source srcset="path-dark.png" media="(prefers-color-scheme: dark)">
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* <img alt="A Path" src="path-light.png">
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* </picture>
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*
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* Since: 4.14
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*/
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@ -1007,6 +1013,22 @@ parse_circle (const char **p,
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* [SVG path syntax](https://www.w3.org/TR/SVG11/paths.html#PathData),
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* as e.g. produced by [method@Gsk.Path.to_string].
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*
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* A high-level summary of the syntax:
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*
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* - `M x y` Move to `(x, y)`
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* - `L x y` Add a line from the current point to `(x, y)`
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* - `Q x1 y1 x2 y2` Add a quadratic Bézier from the current point to `(x2, y2)`, with control point `(x1, y1)`
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* - `C x1 y1 x2 y2 x3 y3` Add a cubic Bézier from the current point to `(x3, y3)`, with control points `(x1, y1)` and `(x2, y2)`
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* - `Z` Close the contour by drawing a line back to the start point
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* - `H x` Add a horizontal line from the current point to the given x value
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* - `V y` Add a vertical line from the current point to the given y value
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* - `T x2 y2` Add a quadratic Bézier, using the reflection of the previous segments' control point as control point
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* - `S x2 y2 x3 y3` Add a cubic Bézier, using the reflection of the previous segments' second control point as first control point
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* - `A rx ry r l s x y` Add an elliptical arc from the current point to `(x, y)` with radii rx and ry. See the SVG documentation for how the other parameters influence the arc.
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*
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* All the commands have lowercase variants that interpret coordinates
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* relative to the current point.
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*
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* Returns: (nullable): a new `GskPath`, or `NULL`
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* if @string could not be parsed
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*
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@ -4375,8 +4375,8 @@ gsk_rounded_clip_node_get_clip (const GskRenderNode *node)
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/**
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* GskFillNode:
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*
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* A render node filling the child node in the area given by [struct@Gsk.Path]
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* and [enum@Gsk.FillRule].
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* A render node filling the area given by [struct@Gsk.Path]
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* and [enum@Gsk.FillRule] with the child node.
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*
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* Since: 4.14
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*/
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@ -4584,8 +4584,8 @@ gsk_fill_node_get_fill_rule (const GskRenderNode *node)
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/**
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* GskStrokeNode:
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*
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* A render node that will stroke the child node along the given [struct@Gsk.Path]
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* using the [struct@Gsk.Stroke] attributes.
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* A render node that will fill the area determined by stroking the the given
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* [struct@Gsk.Path] using the [struct@Gsk.Stroke] attributes.
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*
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* Since: 4.14
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*/
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@ -4688,8 +4688,10 @@ gsk_stroke_node_class_init (gpointer g_class,
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* @path: (transfer none): The path describing the area to stroke
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* @stroke: (transfer none): The stroke attributes to use
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*
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* Creates a #GskRenderNode that will stroke the @child along the given
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* @path using the attributes defined in @stroke.
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* Creates a #GskRenderNode that will fill the outline generated by stroking
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* the given @path using the attributes defined in @stroke.
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*
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* The area is filled with @child.
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*
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* Returns: (transfer none) (type GskStrokeNode): A new #GskRenderNode
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*
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Block a user