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128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* This is a stable interface of wlroots. Future changes will be limited to:
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*
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* - New functions
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* - New struct members
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* - New enum members
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*
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* Note that wlroots does not make an ABI compatibility promise - in the future,
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* the layout and size of structs used by wlroots may change, requiring code
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* depending on this header to be recompiled (but not edited).
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*
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* Breaking changes are announced in the release notes and follow a 1-year
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* deprecation schedule.
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*/
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#ifndef WLR_XCURSOR_H
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#define WLR_XCURSOR_H
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#include <stdint.h>
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#include <wlr/util/edges.h>
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/**
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* A still cursor image.
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*
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* The buffer contains pixels layed out in a packed DRM_FORMAT_ARGB8888 format.
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*/
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struct wlr_xcursor_image {
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uint32_t width; /* actual width */
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uint32_t height; /* actual height */
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uint32_t hotspot_x; /* hot-spot x (must be inside image) */
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uint32_t hotspot_y; /* hot-spot y (must be inside image) */
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uint32_t delay; /* animation delay to next frame (ms) */
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uint8_t *buffer; /* pixel data */
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};
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/**
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* A cursor.
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*
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* If the cursor is animated, it may contain more than a single image.
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*/
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struct wlr_xcursor {
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unsigned int image_count;
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struct wlr_xcursor_image **images;
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char *name;
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uint32_t total_delay; /* total duration of the animation in ms */
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};
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/**
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* Container for an Xcursor theme.
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*/
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struct wlr_xcursor_theme {
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unsigned int cursor_count;
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struct wlr_xcursor **cursors;
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char *name;
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int size;
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};
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/**
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* Loads the named Xcursor theme.
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*
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* This is useful if you need cursor images for your compositor to use when a
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* client-side cursor is not available or you wish to override client-side
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* cursors for a particular UI interaction (such as using a grab cursor when
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* moving a window around).
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*
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* The size is given in pixels.
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*
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* If a cursor theme with the given name couldn't be loaded, a fallback theme
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* is loaded.
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*
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* On error, NULL is returned.
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*/
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struct wlr_xcursor_theme *wlr_xcursor_theme_load(const char *name, int size);
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/**
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* Destroy a cursor theme.
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*
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* This implicitly destroys all child cursors and cursor images.
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*/
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void wlr_xcursor_theme_destroy(struct wlr_xcursor_theme *theme);
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/**
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* Obtain a cursor for the specified name (e.g. "default").
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*
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* If the cursor could not be found, NULL is returned.
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*/
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struct wlr_xcursor *wlr_xcursor_theme_get_cursor(
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struct wlr_xcursor_theme *theme, const char *name);
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/**
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* Find the frame for a given elapsed time in a cursor animation.
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*
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* This function converts a timestamp (in ms) to a cursor image index.
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*/
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int wlr_xcursor_frame(struct wlr_xcursor *cursor, uint32_t time);
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/**
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* Get the name of the resize cursor for the given edges.
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*/
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const char *wlr_xcursor_get_resize_name(enum wlr_edges edges);
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#endif
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