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Diffstat (limited to 'src/contrib/SDL-3.2.20/wayland-protocols/fractional-scale-v1.xml')
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1 files changed, 102 insertions, 0 deletions
diff --git a/src/contrib/SDL-3.2.20/wayland-protocols/fractional-scale-v1.xml b/src/contrib/SDL-3.2.20/wayland-protocols/fractional-scale-v1.xml new file mode 100644 index 0000000..350bfc0 --- /dev/null +++ b/src/contrib/SDL-3.2.20/wayland-protocols/fractional-scale-v1.xml | |||
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1 | <?xml version="1.0" encoding="UTF-8"?> | ||
2 | <protocol name="fractional_scale_v1"> | ||
3 | <copyright> | ||
4 | Copyright © 2022 Kenny Levinsen | ||
5 | |||
6 | Permission is hereby granted, free of charge, to any person obtaining a | ||
7 | copy of this software and associated documentation files (the "Software"), | ||
8 | to deal in the Software without restriction, including without limitation | ||
9 | the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
10 | and/or sell copies of the Software, and to permit persons to whom the | ||
11 | Software is furnished to do so, subject to the following conditions: | ||
12 | |||
13 | The above copyright notice and this permission notice (including the next | ||
14 | paragraph) shall be included in all copies or substantial portions of the | ||
15 | Software. | ||
16 | |||
17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
20 | THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
22 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | ||
23 | DEALINGS IN THE SOFTWARE. | ||
24 | </copyright> | ||
25 | |||
26 | <description summary="Protocol for requesting fractional surface scales"> | ||
27 | This protocol allows a compositor to suggest for surfaces to render at | ||
28 | fractional scales. | ||
29 | |||
30 | A client can submit scaled content by utilizing wp_viewport. This is done by | ||
31 | creating a wp_viewport object for the surface and setting the destination | ||
32 | rectangle to the surface size before the scale factor is applied. | ||
33 | |||
34 | The buffer size is calculated by multiplying the surface size by the | ||
35 | intended scale. | ||
36 | |||
37 | The wl_surface buffer scale should remain set to 1. | ||
38 | |||
39 | If a surface has a surface-local size of 100 px by 50 px and wishes to | ||
40 | submit buffers with a scale of 1.5, then a buffer of 150px by 75 px should | ||
41 | be used and the wp_viewport destination rectangle should be 100 px by 50 px. | ||
42 | |||
43 | For toplevel surfaces, the size is rounded halfway away from zero. The | ||
44 | rounding algorithm for subsurface position and size is not defined. | ||
45 | </description> | ||
46 | |||
47 | <interface name="wp_fractional_scale_manager_v1" version="1"> | ||
48 | <description summary="fractional surface scale information"> | ||
49 | A global interface for requesting surfaces to use fractional scales. | ||
50 | </description> | ||
51 | |||
52 | <request name="destroy" type="destructor"> | ||
53 | <description summary="unbind the fractional surface scale interface"> | ||
54 | Informs the server that the client will not be using this protocol | ||
55 | object anymore. This does not affect any other objects, | ||
56 | wp_fractional_scale_v1 objects included. | ||
57 | </description> | ||
58 | </request> | ||
59 | |||
60 | <enum name="error"> | ||
61 | <entry name="fractional_scale_exists" value="0" | ||
62 | summary="the surface already has a fractional_scale object associated"/> | ||
63 | </enum> | ||
64 | |||
65 | <request name="get_fractional_scale"> | ||
66 | <description summary="extend surface interface for scale information"> | ||
67 | Create an add-on object for the the wl_surface to let the compositor | ||
68 | request fractional scales. If the given wl_surface already has a | ||
69 | wp_fractional_scale_v1 object associated, the fractional_scale_exists | ||
70 | protocol error is raised. | ||
71 | </description> | ||
72 | <arg name="id" type="new_id" interface="wp_fractional_scale_v1" | ||
73 | summary="the new surface scale info interface id"/> | ||
74 | <arg name="surface" type="object" interface="wl_surface" | ||
75 | summary="the surface"/> | ||
76 | </request> | ||
77 | </interface> | ||
78 | |||
79 | <interface name="wp_fractional_scale_v1" version="1"> | ||
80 | <description summary="fractional scale interface to a wl_surface"> | ||
81 | An additional interface to a wl_surface object which allows the compositor | ||
82 | to inform the client of the preferred scale. | ||
83 | </description> | ||
84 | |||
85 | <request name="destroy" type="destructor"> | ||
86 | <description summary="remove surface scale information for surface"> | ||
87 | Destroy the fractional scale object. When this object is destroyed, | ||
88 | preferred_scale events will no longer be sent. | ||
89 | </description> | ||
90 | </request> | ||
91 | |||
92 | <event name="preferred_scale"> | ||
93 | <description summary="notify of new preferred scale"> | ||
94 | Notification of a new preferred scale for this surface that the | ||
95 | compositor suggests that the client should use. | ||
96 | |||
97 | The sent scale is the numerator of a fraction with a denominator of 120. | ||
98 | </description> | ||
99 | <arg name="scale" type="uint" summary="the new preferred scale"/> | ||
100 | </event> | ||
101 | </interface> | ||
102 | </protocol> | ||