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/*
* vim:ts=4:sw=4:expandtab
*
* Copyright © 2013 Michael Stapelberg
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the names of the authors or their
* institutions shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization from the authors.
*
*/
#ifndef CURSOR_H
#define CURSOR_H
#include <xcb/render.h>
#include "xcb_cursor.h"
enum {
RM_XCURSOR_THEME = 0,
RM_XCURSOR_SIZE,
RM_XFT_DPI,
RM_MAX,
};
enum render_version {
RV_NONE = 0,
/* RENDER's CreateCursor was added in RENDER 0.5 */
RV_CURSOR,
/* RENDER's CreateAnimCursor was added in RENDER 0.8 */
RV_ANIM_CURSOR
};
struct xcb_cursor_context_t {
xcb_connection_t *conn;
xcb_window_t root;
xcb_font_t cursor_font;
xcb_render_query_pict_formats_reply_t *pf_reply;
/* This is a pointer into pf_reply. */
xcb_render_pictforminfo_t *pict_format;
/* Specific values of the root window’s RESOURCE_MANAGER atom contents. */
char *rm[RM_MAX];
/* Best cursor size. If a file contains multiple cursor images, the images
* which match the size best will be loaded. */
uint32_t size;
const char *home;
const char *path;
enum render_version render_version;
};
/*
* Cursor files start with a header. The header
* contains a magic number, a version number and a
* table of contents which has type and offset information
* for the remaining tables in the file.
*
* File minor versions increment for compatible changes
* File major versions increment for incompatible changes (never, we hope)
*
* Chunks of the same type are always upward compatible. Incompatible
* changes are made with new chunk types; the old data can remain under
* the old type. Upward compatible changes can add header data as the
* header lengths are specified in the file.
*
* File:
* FileHeader
* LISTofChunk
*
* FileHeader:
* CARD32 magic magic number
* CARD32 header bytes in file header
* CARD32 version file version
* CARD32 ntoc number of toc entries
* LISTofFileToc toc table of contents
*
* FileToc:
* CARD32 type entry type
* CARD32 subtype entry subtype (size for images)
* CARD32 position absolute file position
*/
/* little-endian */
#define XCURSOR_MAGIC 0x72756358
typedef struct xcint_file_header_t {
uint32_t magic;
uint32_t header;
uint32_t version;
uint32_t ntoc;
} __attribute__((packed)) xcint_file_header_t;
typedef struct xcint_file_toc_t {
uint32_t type;
uint32_t subtype;
uint32_t position;
} __attribute__((packed)) xcint_file_toc_t;
typedef struct xcint_cursor_file_t {
xcint_file_header_t header;
xcint_file_toc_t *tocs;
} xcint_cursor_file_t;
/*
* The rest of the file is a list of chunks, each tagged by type
* and version.
*
* Chunk:
* ChunkHeader
* <extra type-specific header fields>
* <type-specific data>
*
* ChunkHeader:
* CARD32 header bytes in chunk header + type header
* CARD32 type chunk type
* CARD32 subtype chunk subtype
* CARD32 version chunk type version
*/
typedef struct xcint_chunk_header_t {
uint32_t header;
uint32_t type;
uint32_t subtype;
uint32_t version;
} __attribute__((packed)) xcint_chunk_header_t;
#define XCURSOR_IMAGE_TYPE 0xfffd0002
#define XCURSOR_IMAGE_VERSION 1
#define XCURSOR_IMAGE_MAX_SIZE 0x7fff /* 32767x32767 max cursor size */
typedef struct xcint_image_t {
uint32_t width;
uint32_t height;
uint32_t xhot;
uint32_t yhot;
uint32_t delay;
uint32_t *pixels;
} __attribute__((packed)) xcint_image_t;
/* shape_to_id.c */
const int cursor_shape_to_id(const char *name);
/* parse_cursor_file.c */
int parse_cursor_file(xcb_cursor_context_t *c, const int fd, xcint_image_t **images, int *nimg);
#endif
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