[gtk/wayland-cursors: 1/2] wip: copy wayland-cursor into tree
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wayland-cursors: 1/2] wip: copy wayland-cursor into tree
- Date: Fri, 24 Jan 2020 19:41:12 +0000 (UTC)
commit 24fed0cdd915013099b7b3be82d11e746e463743
Author: Matthias Clasen <mclasen redhat com>
Date: Fri Jan 24 13:33:13 2020 -0500
wip: copy wayland-cursor into tree
gdk/wayland/cursor/meson.build | 12 +
gdk/wayland/cursor/os-compatibility.c | 173 ++++++
gdk/wayland/cursor/os-compatibility.h | 34 ++
gdk/wayland/cursor/wayland-cursor.c | 441 +++++++++++++++
gdk/wayland/cursor/wayland-cursor.h | 77 +++
gdk/wayland/cursor/xcursor.c | 977 ++++++++++++++++++++++++++++++++++
gdk/wayland/cursor/xcursor.h | 65 +++
gdk/wayland/meson.build | 6 +-
meson.build | 2 -
9 files changed, 1783 insertions(+), 4 deletions(-)
---
diff --git a/gdk/wayland/cursor/meson.build b/gdk/wayland/cursor/meson.build
new file mode 100644
index 0000000000..fb14dbf9b6
--- /dev/null
+++ b/gdk/wayland/cursor/meson.build
@@ -0,0 +1,12 @@
+wayland_cursor_sources = files([
+ 'wayland-cursor.c',
+ 'xcursor.c',
+ 'os-compatibility.c'
+])
+
+libwayland_cursor = static_library('wayland+cursor',
+ sources: wayland_cursor_sources,
+ include_directories: [ confinc, ],
+ dependencies: [ glib_dep, ],
+ c_args: common_cflags,
+ link_args: common_ldflags)
diff --git a/gdk/wayland/cursor/os-compatibility.c b/gdk/wayland/cursor/os-compatibility.c
new file mode 100644
index 0000000000..bd28dbb205
--- /dev/null
+++ b/gdk/wayland/cursor/os-compatibility.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright © 2012 Collabora, Ltd.
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define HAVE_MEMFD_CREATE
+#ifdef HAVE_MEMFD_CREATE
+#include <sys/mman.h>
+#endif
+
+#include "os-compatibility.h"
+
+#ifndef HAVE_MKOSTEMP
+static int
+set_cloexec_or_close(int fd)
+{
+ long flags;
+
+ if (fd == -1)
+ return -1;
+
+ flags = fcntl(fd, F_GETFD);
+ if (flags == -1)
+ goto err;
+
+ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
+ goto err;
+
+ return fd;
+
+err:
+ close(fd);
+ return -1;
+}
+#endif
+
+static int
+create_tmpfile_cloexec(char *tmpname)
+{
+ int fd;
+
+#ifdef HAVE_MKOSTEMP
+ fd = mkostemp(tmpname, O_CLOEXEC);
+ if (fd >= 0)
+ unlink(tmpname);
+#else
+ fd = mkstemp(tmpname);
+ if (fd >= 0) {
+ fd = set_cloexec_or_close(fd);
+ unlink(tmpname);
+ }
+#endif
+
+ return fd;
+}
+
+/*
+ * Create a new, unique, anonymous file of the given size, and
+ * return the file descriptor for it. The file descriptor is set
+ * CLOEXEC. The file is immediately suitable for mmap()'ing
+ * the given size at offset zero.
+ *
+ * The file should not have a permanent backing store like a disk,
+ * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
+ *
+ * The file name is deleted from the file system.
+ *
+ * The file is suitable for buffer sharing between processes by
+ * transmitting the file descriptor over Unix sockets using the
+ * SCM_RIGHTS methods.
+ *
+ * If the C library implements posix_fallocate(), it is used to
+ * guarantee that disk space is available for the file at the
+ * given size. If disk space is insufficent, errno is set to ENOSPC.
+ * If posix_fallocate() is not supported, program may receive
+ * SIGBUS on accessing mmap()'ed file contents instead.
+ *
+ * If the C library implements memfd_create(), it is used to create the
+ * file purely in memory, without any backing file name on the file
+ * system, and then sealing off the possibility of shrinking it. This
+ * can then be checked before accessing mmap()'ed file contents, to
+ * make sure SIGBUS can't happen. It also avoids requiring
+ * XDG_RUNTIME_DIR.
+ */
+int
+os_create_anonymous_file(off_t size)
+{
+ static const char template[] = "/wayland-cursor-shared-XXXXXX";
+ const char *path;
+ char *name;
+ int fd;
+ int ret;
+
+#ifdef HAVE_MEMFD_CREATE
+ fd = memfd_create("wayland-cursor", MFD_CLOEXEC | MFD_ALLOW_SEALING);
+ if (fd >= 0) {
+ /* We can add this seal before calling posix_fallocate(), as
+ * the file is currently zero-sized anyway.
+ *
+ * There is also no need to check for the return value, we
+ * couldn't do anything with it anyway.
+ */
+ fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_SEAL);
+ } else
+#endif
+ {
+ path = getenv("XDG_RUNTIME_DIR");
+ if (!path) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ name = malloc(strlen(path) + sizeof(template));
+ if (!name)
+ return -1;
+
+ strcpy(name, path);
+ strcat(name, template);
+
+ fd = create_tmpfile_cloexec(name);
+
+ free(name);
+
+ if (fd < 0)
+ return -1;
+ }
+
+#ifdef HAVE_POSIX_FALLOCATE
+ ret = posix_fallocate(fd, 0, size);
+ if (ret != 0) {
+ close(fd);
+ errno = ret;
+ return -1;
+ }
+#else
+ ret = ftruncate(fd, size);
+ if (ret < 0) {
+ close(fd);
+ return -1;
+ }
+#endif
+
+ return fd;
+}
diff --git a/gdk/wayland/cursor/os-compatibility.h b/gdk/wayland/cursor/os-compatibility.h
new file mode 100644
index 0000000000..d0e69acd93
--- /dev/null
+++ b/gdk/wayland/cursor/os-compatibility.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2012 Collabora, Ltd.
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#ifndef OS_COMPATIBILITY_H
+#define OS_COMPATIBILITY_H
+
+#include <sys/types.h>
+
+int
+os_create_anonymous_file(off_t size);
+
+#endif /* OS_COMPATIBILITY_H */
diff --git a/gdk/wayland/cursor/wayland-cursor.c b/gdk/wayland/cursor/wayland-cursor.c
new file mode 100644
index 0000000000..0a208bc8ef
--- /dev/null
+++ b/gdk/wayland/cursor/wayland-cursor.c
@@ -0,0 +1,441 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#include "config.h"
+#include "xcursor.h"
+#include "wayland-cursor.h"
+#include "wayland-client.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <os-compatibility.h>
+
+#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
+
+struct shm_pool {
+ struct wl_shm_pool *pool;
+ int fd;
+ unsigned int size;
+ unsigned int used;
+ char *data;
+};
+
+static struct shm_pool *
+shm_pool_create(struct wl_shm *shm, int size)
+{
+ struct shm_pool *pool;
+
+ pool = malloc(sizeof *pool);
+ if (!pool)
+ return NULL;
+
+ pool->fd = os_create_anonymous_file (size);
+ if (pool->fd < 0)
+ goto err_free;
+
+ pool->data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ pool->fd, 0);
+
+ if (pool->data == MAP_FAILED)
+ goto err_close;
+
+ pool->pool = wl_shm_create_pool(shm, pool->fd, size);
+ pool->size = size;
+ pool->used = 0;
+
+ return pool;
+
+err_close:
+ close(pool->fd);
+err_free:
+ free(pool);
+ return NULL;
+}
+
+static int
+shm_pool_resize(struct shm_pool *pool, int size)
+{
+ if (ftruncate(pool->fd, size) < 0)
+ return 0;
+
+#ifdef HAVE_POSIX_FALLOCATE
+ errno = posix_fallocate(pool->fd, 0, size);
+ if (errno != 0)
+ return 0;
+#endif
+
+ wl_shm_pool_resize(pool->pool, size);
+
+ munmap(pool->data, pool->size);
+
+ pool->data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ pool->fd, 0);
+ if (pool->data == (void *)-1)
+ return 0;
+ pool->size = size;
+
+ return 1;
+}
+
+static int
+shm_pool_allocate(struct shm_pool *pool, int size)
+{
+ int offset;
+
+ if (pool->used + size > pool->size)
+ if (!shm_pool_resize(pool, 2 * pool->size + size))
+ return -1;
+
+ offset = pool->used;
+ pool->used += size;
+
+ return offset;
+}
+
+static void
+shm_pool_destroy(struct shm_pool *pool)
+{
+ munmap(pool->data, pool->size);
+ wl_shm_pool_destroy(pool->pool);
+ close(pool->fd);
+ free(pool);
+}
+
+
+struct wl_cursor_theme {
+ unsigned int cursor_count;
+ struct wl_cursor **cursors;
+ struct wl_shm *shm;
+ struct shm_pool *pool;
+ char *name;
+ int size;
+};
+
+struct cursor_image {
+ struct wl_cursor_image image;
+ struct wl_cursor_theme *theme;
+ struct wl_buffer *buffer;
+ int offset; /* data offset of this image in the shm pool */
+};
+
+struct cursor {
+ struct wl_cursor cursor;
+ uint32_t total_delay; /* length of the animation in ms */
+};
+
+/** Get an shm buffer for a cursor image
+ *
+ * \param image The cursor image
+ * \return An shm buffer for the cursor image. The user should not destroy
+ * the returned buffer.
+ */
+WL_EXPORT struct wl_buffer *
+wl_cursor_image_get_buffer(struct wl_cursor_image *_img)
+{
+ struct cursor_image *image = (struct cursor_image *) _img;
+ struct wl_cursor_theme *theme = image->theme;
+
+ if (!image->buffer) {
+ image->buffer =
+ wl_shm_pool_create_buffer(theme->pool->pool,
+ image->offset,
+ _img->width, _img->height,
+ _img->width * 4,
+ WL_SHM_FORMAT_ARGB8888);
+ };
+
+ return image->buffer;
+}
+
+static void
+wl_cursor_image_destroy(struct wl_cursor_image *_img)
+{
+ struct cursor_image *image = (struct cursor_image *) _img;
+
+ if (image->buffer)
+ wl_buffer_destroy(image->buffer);
+
+ free(image);
+}
+
+static void
+wl_cursor_destroy(struct wl_cursor *cursor)
+{
+ unsigned int i;
+
+ for (i = 0; i < cursor->image_count; i++)
+ wl_cursor_image_destroy(cursor->images[i]);
+
+ free(cursor->images);
+ free(cursor->name);
+ free(cursor);
+}
+
+static struct wl_cursor *
+wl_cursor_create_from_xcursor_images(XcursorImages *images,
+ struct wl_cursor_theme *theme)
+{
+ struct cursor *cursor;
+ struct cursor_image *image;
+ int i, size;
+
+ cursor = malloc(sizeof *cursor);
+ if (!cursor)
+ return NULL;
+
+ cursor->cursor.images =
+ malloc(images->nimage * sizeof cursor->cursor.images[0]);
+ if (!cursor->cursor.images) {
+ free(cursor);
+ return NULL;
+ }
+
+ cursor->cursor.name = strdup(images->name);
+ cursor->total_delay = 0;
+
+ for (i = 0; i < images->nimage; i++) {
+ image = malloc(sizeof *image);
+ if (image == NULL)
+ break;
+
+ image->theme = theme;
+ image->buffer = NULL;
+
+ image->image.width = images->images[i]->width;
+ image->image.height = images->images[i]->height;
+ image->image.hotspot_x = images->images[i]->xhot;
+ image->image.hotspot_y = images->images[i]->yhot;
+ image->image.delay = images->images[i]->delay;
+
+ size = image->image.width * image->image.height * 4;
+ image->offset = shm_pool_allocate(theme->pool, size);
+ if (image->offset < 0) {
+ free(image);
+ break;
+ }
+
+ /* copy pixels to shm pool */
+ memcpy(theme->pool->data + image->offset,
+ images->images[i]->pixels, size);
+ cursor->total_delay += image->image.delay;
+ cursor->cursor.images[i] = (struct wl_cursor_image *) image;
+ }
+ cursor->cursor.image_count = i;
+
+ if (cursor->cursor.image_count == 0) {
+ free(cursor->cursor.name);
+ free(cursor->cursor.images);
+ free(cursor);
+ return NULL;
+ }
+
+ return &cursor->cursor;
+}
+
+static void
+load_callback(XcursorImages *images, void *data)
+{
+ struct wl_cursor_theme *theme = data;
+ struct wl_cursor *cursor;
+
+ if (wl_cursor_theme_get_cursor(theme, images->name)) {
+ XcursorImagesDestroy(images);
+ return;
+ }
+
+ cursor = wl_cursor_create_from_xcursor_images(images, theme);
+
+ if (cursor) {
+ theme->cursor_count++;
+ theme->cursors =
+ realloc(theme->cursors,
+ theme->cursor_count * sizeof theme->cursors[0]);
+
+ if (theme->cursors == NULL) {
+ theme->cursor_count--;
+ free(cursor);
+ } else {
+ theme->cursors[theme->cursor_count - 1] = cursor;
+ }
+ }
+
+ XcursorImagesDestroy(images);
+}
+
+/** Load a cursor theme to memory shared with the compositor
+ *
+ * \param name The name of the cursor theme to load. If %NULL, the default
+ * theme will be loaded.
+ * \param size Desired size of the cursor images.
+ * \param shm The compositor's shm interface.
+ *
+ * \return An object representing the theme that should be destroyed with
+ * wl_cursor_theme_destroy() or %NULL on error. If no theme with the given
+ * name exists, a default theme will be loaded.
+ */
+WL_EXPORT struct wl_cursor_theme *
+wl_cursor_theme_load(const char *name, int size, struct wl_shm *shm)
+{
+ struct wl_cursor_theme *theme;
+
+ theme = malloc(sizeof *theme);
+ if (!theme)
+ return NULL;
+
+ if (!name)
+ name = "default";
+
+ theme->name = strdup(name);
+ if (!theme->name)
+ goto out_error_name;
+ theme->size = size;
+ theme->cursor_count = 0;
+ theme->cursors = NULL;
+
+ theme->pool = shm_pool_create(shm, size * size * 4);
+ if (!theme->pool)
+ goto out_error_pool;
+
+ xcursor_load_theme(name, size, load_callback, theme);
+
+ return theme;
+
+out_error_pool:
+ free(theme->name);
+out_error_name:
+ free(theme);
+ return NULL;
+}
+
+/** Destroys a cursor theme object
+ *
+ * \param theme The cursor theme to be destroyed
+ */
+WL_EXPORT void
+wl_cursor_theme_destroy(struct wl_cursor_theme *theme)
+{
+ unsigned int i;
+
+ for (i = 0; i < theme->cursor_count; i++)
+ wl_cursor_destroy(theme->cursors[i]);
+
+ shm_pool_destroy(theme->pool);
+
+ free(theme->name);
+ free(theme->cursors);
+ free(theme);
+}
+
+/** Get the cursor for a given name from a cursor theme
+ *
+ * \param theme The cursor theme
+ * \param name Name of the desired cursor
+ * \return The theme's cursor of the given name or %NULL if there is no
+ * such cursor
+ */
+WL_EXPORT struct wl_cursor *
+wl_cursor_theme_get_cursor(struct wl_cursor_theme *theme,
+ const char *name)
+{
+ unsigned int i;
+
+ for (i = 0; i < theme->cursor_count; i++) {
+ if (strcmp(name, theme->cursors[i]->name) == 0)
+ return theme->cursors[i];
+ }
+
+ return NULL;
+}
+
+/** Find the frame for a given elapsed time in a cursor animation
+ * as well as the time left until next cursor change.
+ *
+ * \param cursor The cursor
+ * \param time Elapsed time in ms since the beginning of the animation
+ * \param duration pointer to uint32_t to store time left for this image or
+ * zero if the cursor won't change.
+ *
+ * \return The index of the image that should be displayed for the
+ * given time in the cursor animation.
+ */
+WL_EXPORT int
+wl_cursor_frame_and_duration(struct wl_cursor *_cursor, uint32_t time,
+ uint32_t *duration)
+{
+ struct cursor *cursor = (struct cursor *) _cursor;
+ uint32_t t;
+ int i;
+
+ if (cursor->cursor.image_count == 1) {
+ if (duration)
+ *duration = 0;
+ return 0;
+ }
+
+ i = 0;
+ t = time % cursor->total_delay;
+
+ /* If there is a 0 delay in the image set then this
+ * loop breaks on it and we display that cursor until
+ * time % cursor->total_delay wraps again.
+ * Since a 0 delay is silly, and we've never actually
+ * seen one in a cursor file, we haven't bothered to
+ * "fix" this.
+ */
+ while (t - cursor->cursor.images[i]->delay < t)
+ t -= cursor->cursor.images[i++]->delay;
+
+ if (!duration)
+ return i;
+
+ /* Make sure we don't accidentally tell the caller this is
+ * a static cursor image.
+ */
+ if (t >= cursor->cursor.images[i]->delay)
+ *duration = 1;
+ else
+ *duration = cursor->cursor.images[i]->delay - t;
+
+ return i;
+}
+
+/** Find the frame for a given elapsed time in a cursor animation
+ *
+ * \param cursor The cursor
+ * \param time Elapsed time in ms since the beginning of the animation
+ *
+ * \return The index of the image that should be displayed for the
+ * given time in the cursor animation.
+ */
+WL_EXPORT int
+wl_cursor_frame(struct wl_cursor *_cursor, uint32_t time)
+{
+ return wl_cursor_frame_and_duration(_cursor, time, NULL);
+}
diff --git a/gdk/wayland/cursor/wayland-cursor.h b/gdk/wayland/cursor/wayland-cursor.h
new file mode 100644
index 0000000000..40d3fc5c9d
--- /dev/null
+++ b/gdk/wayland/cursor/wayland-cursor.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#ifndef WAYLAND_CURSOR_H
+#define WAYLAND_CURSOR_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct wl_cursor_theme;
+struct wl_buffer;
+struct wl_shm;
+
+struct wl_cursor_image {
+ uint32_t width; /* actual width */
+ uint32_t height; /* actual height */
+ uint32_t hotspot_x; /* hot spot x (must be inside image) */
+ uint32_t hotspot_y; /* hot spot y (must be inside image) */
+ uint32_t delay; /* animation delay to next frame (ms) */
+};
+
+struct wl_cursor {
+ unsigned int image_count;
+ struct wl_cursor_image **images;
+ char *name;
+};
+
+struct wl_cursor_theme *
+wl_cursor_theme_load(const char *name, int size, struct wl_shm *shm);
+
+void
+wl_cursor_theme_destroy(struct wl_cursor_theme *theme);
+
+struct wl_cursor *
+wl_cursor_theme_get_cursor(struct wl_cursor_theme *theme,
+ const char *name);
+
+struct wl_buffer *
+wl_cursor_image_get_buffer(struct wl_cursor_image *image);
+
+int
+wl_cursor_frame(struct wl_cursor *cursor, uint32_t time);
+
+int
+wl_cursor_frame_and_duration(struct wl_cursor *cursor, uint32_t time,
+ uint32_t *duration);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/gdk/wayland/cursor/xcursor.c b/gdk/wayland/cursor/xcursor.c
new file mode 100644
index 0000000000..689c702672
--- /dev/null
+++ b/gdk/wayland/cursor/xcursor.c
@@ -0,0 +1,977 @@
+/*
+ * Copyright © 2002 Keith Packard
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#include "xcursor.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+
+/*
+ * From libXcursor/include/X11/extensions/Xcursor.h
+ */
+
+#define XcursorTrue 1
+#define XcursorFalse 0
+
+/*
+ * 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
+ */
+
+#define XCURSOR_MAGIC 0x72756358 /* "Xcur" LSBFirst */
+
+/*
+ * Current Xcursor version number. Will be substituted by configure
+ * from the version in the libXcursor configure.ac file.
+ */
+
+#define XCURSOR_LIB_MAJOR 1
+#define XCURSOR_LIB_MINOR 1
+#define XCURSOR_LIB_REVISION 13
+#define XCURSOR_LIB_VERSION ((XCURSOR_LIB_MAJOR * 10000) + \
+ (XCURSOR_LIB_MINOR * 100) + \
+ (XCURSOR_LIB_REVISION))
+
+/*
+ * This version number is stored in cursor files; changes to the
+ * file format require updating this version number
+ */
+#define XCURSOR_FILE_MAJOR 1
+#define XCURSOR_FILE_MINOR 0
+#define XCURSOR_FILE_VERSION ((XCURSOR_FILE_MAJOR << 16) | (XCURSOR_FILE_MINOR))
+#define XCURSOR_FILE_HEADER_LEN (4 * 4)
+#define XCURSOR_FILE_TOC_LEN (3 * 4)
+
+typedef struct _XcursorFileToc {
+ XcursorUInt type; /* chunk type */
+ XcursorUInt subtype; /* subtype (size for images) */
+ XcursorUInt position; /* absolute position in file */
+} XcursorFileToc;
+
+typedef struct _XcursorFileHeader {
+ XcursorUInt magic; /* magic number */
+ XcursorUInt header; /* byte length of header */
+ XcursorUInt version; /* file version number */
+ XcursorUInt ntoc; /* number of toc entries */
+ XcursorFileToc *tocs; /* table of contents */
+} XcursorFileHeader;
+
+/*
+ * 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
+ */
+
+#define XCURSOR_CHUNK_HEADER_LEN (4 * 4)
+
+typedef struct _XcursorChunkHeader {
+ XcursorUInt header; /* bytes in chunk header */
+ XcursorUInt type; /* chunk type */
+ XcursorUInt subtype; /* chunk subtype (size for images) */
+ XcursorUInt version; /* version of this type */
+} XcursorChunkHeader;
+
+/*
+ * Here's a list of the known chunk types
+ */
+
+/*
+ * Comments consist of a 4-byte length field followed by
+ * UTF-8 encoded text
+ *
+ * Comment:
+ * ChunkHeader header chunk header
+ * CARD32 length bytes in text
+ * LISTofCARD8 text UTF-8 encoded text
+ */
+
+#define XCURSOR_COMMENT_TYPE 0xfffe0001
+#define XCURSOR_COMMENT_VERSION 1
+#define XCURSOR_COMMENT_HEADER_LEN (XCURSOR_CHUNK_HEADER_LEN + (1 *4))
+#define XCURSOR_COMMENT_COPYRIGHT 1
+#define XCURSOR_COMMENT_LICENSE 2
+#define XCURSOR_COMMENT_OTHER 3
+#define XCURSOR_COMMENT_MAX_LEN 0x100000
+
+typedef struct _XcursorComment {
+ XcursorUInt version;
+ XcursorUInt comment_type;
+ char *comment;
+} XcursorComment;
+
+/*
+ * Each cursor image occupies a separate image chunk.
+ * The length of the image header follows the chunk header
+ * so that future versions can extend the header without
+ * breaking older applications
+ *
+ * Image:
+ * ChunkHeader header chunk header
+ * CARD32 width actual width
+ * CARD32 height actual height
+ * CARD32 xhot hot spot x
+ * CARD32 yhot hot spot y
+ * CARD32 delay animation delay
+ * LISTofCARD32 pixels ARGB pixels
+ */
+
+#define XCURSOR_IMAGE_TYPE 0xfffd0002
+#define XCURSOR_IMAGE_VERSION 1
+#define XCURSOR_IMAGE_HEADER_LEN (XCURSOR_CHUNK_HEADER_LEN + (5*4))
+#define XCURSOR_IMAGE_MAX_SIZE 0x7fff /* 32767x32767 max cursor size */
+
+typedef struct _XcursorFile XcursorFile;
+
+struct _XcursorFile {
+ void *closure;
+ int (*read) (XcursorFile *file, unsigned char *buf, int len);
+ int (*write) (XcursorFile *file, unsigned char *buf, int len);
+ int (*seek) (XcursorFile *file, long offset, int whence);
+};
+
+typedef struct _XcursorComments {
+ int ncomment; /* number of comments */
+ XcursorComment **comments; /* array of XcursorComment pointers */
+} XcursorComments;
+
+/*
+ * From libXcursor/src/file.c
+ */
+
+static XcursorImage *
+XcursorImageCreate (int width, int height)
+{
+ XcursorImage *image;
+
+ if (width < 0 || height < 0)
+ return NULL;
+ if (width > XCURSOR_IMAGE_MAX_SIZE || height > XCURSOR_IMAGE_MAX_SIZE)
+ return NULL;
+
+ image = malloc (sizeof (XcursorImage) +
+ width * height * sizeof (XcursorPixel));
+ if (!image)
+ return NULL;
+ image->version = XCURSOR_IMAGE_VERSION;
+ image->pixels = (XcursorPixel *) (image + 1);
+ image->size = width > height ? width : height;
+ image->width = width;
+ image->height = height;
+ image->delay = 0;
+ return image;
+}
+
+static void
+XcursorImageDestroy (XcursorImage *image)
+{
+ free (image);
+}
+
+static XcursorImages *
+XcursorImagesCreate (int size)
+{
+ XcursorImages *images;
+
+ images = malloc (sizeof (XcursorImages) +
+ size * sizeof (XcursorImage *));
+ if (!images)
+ return NULL;
+ images->nimage = 0;
+ images->images = (XcursorImage **) (images + 1);
+ images->name = NULL;
+ return images;
+}
+
+void
+XcursorImagesDestroy (XcursorImages *images)
+{
+ int n;
+
+ if (!images)
+ return;
+
+ for (n = 0; n < images->nimage; n++)
+ XcursorImageDestroy (images->images[n]);
+ if (images->name)
+ free (images->name);
+ free (images);
+}
+
+static void
+XcursorImagesSetName (XcursorImages *images, const char *name)
+{
+ char *new;
+
+ if (!images || !name)
+ return;
+
+ new = malloc (strlen (name) + 1);
+
+ if (!new)
+ return;
+
+ strcpy (new, name);
+ if (images->name)
+ free (images->name);
+ images->name = new;
+}
+
+static XcursorBool
+_XcursorReadUInt (XcursorFile *file, XcursorUInt *u)
+{
+ unsigned char bytes[4];
+
+ if (!file || !u)
+ return XcursorFalse;
+
+ if ((*file->read) (file, bytes, 4) != 4)
+ return XcursorFalse;
+ *u = ((bytes[0] << 0) |
+ (bytes[1] << 8) |
+ (bytes[2] << 16) |
+ (bytes[3] << 24));
+ return XcursorTrue;
+}
+
+static void
+_XcursorFileHeaderDestroy (XcursorFileHeader *fileHeader)
+{
+ free (fileHeader);
+}
+
+static XcursorFileHeader *
+_XcursorFileHeaderCreate (int ntoc)
+{
+ XcursorFileHeader *fileHeader;
+
+ if (ntoc > 0x10000)
+ return NULL;
+ fileHeader = malloc (sizeof (XcursorFileHeader) +
+ ntoc * sizeof (XcursorFileToc));
+ if (!fileHeader)
+ return NULL;
+ fileHeader->magic = XCURSOR_MAGIC;
+ fileHeader->header = XCURSOR_FILE_HEADER_LEN;
+ fileHeader->version = XCURSOR_FILE_VERSION;
+ fileHeader->ntoc = ntoc;
+ fileHeader->tocs = (XcursorFileToc *) (fileHeader + 1);
+ return fileHeader;
+}
+
+static XcursorFileHeader *
+_XcursorReadFileHeader (XcursorFile *file)
+{
+ XcursorFileHeader head, *fileHeader;
+ XcursorUInt skip;
+ unsigned int n;
+
+ if (!file)
+ return NULL;
+
+ if (!_XcursorReadUInt (file, &head.magic))
+ return NULL;
+ if (head.magic != XCURSOR_MAGIC)
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.header))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.version))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.ntoc))
+ return NULL;
+ skip = head.header - XCURSOR_FILE_HEADER_LEN;
+ if (skip)
+ if ((*file->seek) (file, skip, SEEK_CUR) == EOF)
+ return NULL;
+ fileHeader = _XcursorFileHeaderCreate (head.ntoc);
+ if (!fileHeader)
+ return NULL;
+ fileHeader->magic = head.magic;
+ fileHeader->header = head.header;
+ fileHeader->version = head.version;
+ fileHeader->ntoc = head.ntoc;
+ for (n = 0; n < fileHeader->ntoc; n++)
+ {
+ if (!_XcursorReadUInt (file, &fileHeader->tocs[n].type))
+ break;
+ if (!_XcursorReadUInt (file, &fileHeader->tocs[n].subtype))
+ break;
+ if (!_XcursorReadUInt (file, &fileHeader->tocs[n].position))
+ break;
+ }
+ if (n != fileHeader->ntoc)
+ {
+ _XcursorFileHeaderDestroy (fileHeader);
+ return NULL;
+ }
+ return fileHeader;
+}
+
+static XcursorBool
+_XcursorSeekToToc (XcursorFile *file,
+ XcursorFileHeader *fileHeader,
+ int toc)
+{
+ if (!file || !fileHeader || \
+ (*file->seek) (file, fileHeader->tocs[toc].position, SEEK_SET) == EOF)
+ return XcursorFalse;
+ return XcursorTrue;
+}
+
+static XcursorBool
+_XcursorFileReadChunkHeader (XcursorFile *file,
+ XcursorFileHeader *fileHeader,
+ int toc,
+ XcursorChunkHeader *chunkHeader)
+{
+ if (!file || !fileHeader || !chunkHeader)
+ return XcursorFalse;
+ if (!_XcursorSeekToToc (file, fileHeader, toc))
+ return XcursorFalse;
+ if (!_XcursorReadUInt (file, &chunkHeader->header))
+ return XcursorFalse;
+ if (!_XcursorReadUInt (file, &chunkHeader->type))
+ return XcursorFalse;
+ if (!_XcursorReadUInt (file, &chunkHeader->subtype))
+ return XcursorFalse;
+ if (!_XcursorReadUInt (file, &chunkHeader->version))
+ return XcursorFalse;
+ /* sanity check */
+ if (chunkHeader->type != fileHeader->tocs[toc].type ||
+ chunkHeader->subtype != fileHeader->tocs[toc].subtype)
+ return XcursorFalse;
+ return XcursorTrue;
+}
+
+#define dist(a,b) ((a) > (b) ? (a) - (b) : (b) - (a))
+
+static XcursorDim
+_XcursorFindBestSize (XcursorFileHeader *fileHeader,
+ XcursorDim size,
+ int *nsizesp)
+{
+ unsigned int n;
+ int nsizes = 0;
+ XcursorDim bestSize = 0;
+ XcursorDim thisSize;
+
+ if (!fileHeader || !nsizesp)
+ return 0;
+
+ for (n = 0; n < fileHeader->ntoc; n++)
+ {
+ if (fileHeader->tocs[n].type != XCURSOR_IMAGE_TYPE)
+ continue;
+ thisSize = fileHeader->tocs[n].subtype;
+ if (!bestSize || dist (thisSize, size) < dist (bestSize, size))
+ {
+ bestSize = thisSize;
+ nsizes = 1;
+ }
+ else if (thisSize == bestSize)
+ nsizes++;
+ }
+ *nsizesp = nsizes;
+ return bestSize;
+}
+
+static int
+_XcursorFindImageToc (XcursorFileHeader *fileHeader,
+ XcursorDim size,
+ int count)
+{
+ unsigned int toc;
+ XcursorDim thisSize;
+
+ if (!fileHeader)
+ return 0;
+
+ for (toc = 0; toc < fileHeader->ntoc; toc++)
+ {
+ if (fileHeader->tocs[toc].type != XCURSOR_IMAGE_TYPE)
+ continue;
+ thisSize = fileHeader->tocs[toc].subtype;
+ if (thisSize != size)
+ continue;
+ if (!count)
+ break;
+ count--;
+ }
+ if (toc == fileHeader->ntoc)
+ return -1;
+ return toc;
+}
+
+static XcursorImage *
+_XcursorReadImage (XcursorFile *file,
+ XcursorFileHeader *fileHeader,
+ int toc)
+{
+ XcursorChunkHeader chunkHeader;
+ XcursorImage head;
+ XcursorImage *image;
+ int n;
+ XcursorPixel *p;
+
+ if (!file || !fileHeader)
+ return NULL;
+
+ if (!_XcursorFileReadChunkHeader (file, fileHeader, toc, &chunkHeader))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.width))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.height))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.xhot))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.yhot))
+ return NULL;
+ if (!_XcursorReadUInt (file, &head.delay))
+ return NULL;
+ /* sanity check data */
+ if (head.width > XCURSOR_IMAGE_MAX_SIZE ||
+ head.height > XCURSOR_IMAGE_MAX_SIZE)
+ return NULL;
+ if (head.width == 0 || head.height == 0)
+ return NULL;
+ if (head.xhot > head.width || head.yhot > head.height)
+ return NULL;
+
+ /* Create the image and initialize it */
+ image = XcursorImageCreate (head.width, head.height);
+ if (image == NULL)
+ return NULL;
+ if (chunkHeader.version < image->version)
+ image->version = chunkHeader.version;
+ image->size = chunkHeader.subtype;
+ image->xhot = head.xhot;
+ image->yhot = head.yhot;
+ image->delay = head.delay;
+ n = image->width * image->height;
+ p = image->pixels;
+ while (n--)
+ {
+ if (!_XcursorReadUInt (file, p))
+ {
+ XcursorImageDestroy (image);
+ return NULL;
+ }
+ p++;
+ }
+ return image;
+}
+
+static XcursorImages *
+XcursorXcFileLoadImages (XcursorFile *file, int size)
+{
+ XcursorFileHeader *fileHeader;
+ XcursorDim bestSize;
+ int nsize;
+ XcursorImages *images;
+ int n;
+ int toc;
+
+ if (!file || size < 0)
+ return NULL;
+ fileHeader = _XcursorReadFileHeader (file);
+ if (!fileHeader)
+ return NULL;
+ bestSize = _XcursorFindBestSize (fileHeader, (XcursorDim) size, &nsize);
+ if (!bestSize)
+ {
+ _XcursorFileHeaderDestroy (fileHeader);
+ return NULL;
+ }
+ images = XcursorImagesCreate (nsize);
+ if (!images)
+ {
+ _XcursorFileHeaderDestroy (fileHeader);
+ return NULL;
+ }
+ for (n = 0; n < nsize; n++)
+ {
+ toc = _XcursorFindImageToc (fileHeader, bestSize, n);
+ if (toc < 0)
+ break;
+ images->images[images->nimage] = _XcursorReadImage (file, fileHeader,
+ toc);
+ if (!images->images[images->nimage])
+ break;
+ images->nimage++;
+ }
+ _XcursorFileHeaderDestroy (fileHeader);
+ if (images->nimage != nsize)
+ {
+ XcursorImagesDestroy (images);
+ images = NULL;
+ }
+ return images;
+}
+
+static int
+_XcursorStdioFileRead (XcursorFile *file, unsigned char *buf, int len)
+{
+ FILE *f = file->closure;
+ return fread (buf, 1, len, f);
+}
+
+static int
+_XcursorStdioFileWrite (XcursorFile *file, unsigned char *buf, int len)
+{
+ FILE *f = file->closure;
+ return fwrite (buf, 1, len, f);
+}
+
+static int
+_XcursorStdioFileSeek (XcursorFile *file, long offset, int whence)
+{
+ FILE *f = file->closure;
+ return fseek (f, offset, whence);
+}
+
+static void
+_XcursorStdioFileInitialize (FILE *stdfile, XcursorFile *file)
+{
+ file->closure = stdfile;
+ file->read = _XcursorStdioFileRead;
+ file->write = _XcursorStdioFileWrite;
+ file->seek = _XcursorStdioFileSeek;
+}
+
+static XcursorImages *
+XcursorFileLoadImages (FILE *file, int size)
+{
+ XcursorFile f;
+
+ if (!file)
+ return NULL;
+
+ _XcursorStdioFileInitialize (file, &f);
+ return XcursorXcFileLoadImages (&f, size);
+}
+
+/*
+ * From libXcursor/src/library.c
+ */
+
+#ifndef ICONDIR
+#define ICONDIR "/usr/X11R6/lib/X11/icons"
+#endif
+
+#ifndef XCURSORPATH
+#define XCURSORPATH
"~/.icons:/usr/share/icons:/usr/share/pixmaps:~/.cursors:/usr/share/cursors/xorg-x11:"ICONDIR
+#endif
+
+static const char *
+XcursorLibraryPath (void)
+{
+ static const char *path;
+
+ if (!path)
+ {
+ path = getenv ("XCURSOR_PATH");
+ if (!path)
+ path = XCURSORPATH;
+ }
+ return path;
+}
+
+static void
+_XcursorAddPathElt (char *path, const char *elt, int len)
+{
+ int pathlen = strlen (path);
+
+ /* append / if the path doesn't currently have one */
+ if (path[0] == '\0' || path[pathlen - 1] != '/')
+ {
+ strcat (path, "/");
+ pathlen++;
+ }
+ if (len == -1)
+ len = strlen (elt);
+ /* strip leading slashes */
+ while (len && elt[0] == '/')
+ {
+ elt++;
+ len--;
+ }
+ strncpy (path + pathlen, elt, len);
+ path[pathlen + len] = '\0';
+}
+
+static char *
+_XcursorBuildThemeDir (const char *dir, const char *theme)
+{
+ const char *colon;
+ const char *tcolon;
+ char *full;
+ char *home;
+ int dirlen;
+ int homelen;
+ int themelen;
+ int len;
+
+ if (!dir || !theme)
+ return NULL;
+
+ colon = strchr (dir, ':');
+ if (!colon)
+ colon = dir + strlen (dir);
+
+ dirlen = colon - dir;
+
+ tcolon = strchr (theme, ':');
+ if (!tcolon)
+ tcolon = theme + strlen (theme);
+
+ themelen = tcolon - theme;
+
+ home = NULL;
+ homelen = 0;
+ if (*dir == '~')
+ {
+ home = getenv ("HOME");
+ if (!home)
+ return NULL;
+ homelen = strlen (home);
+ dir++;
+ dirlen--;
+ }
+
+ /*
+ * add space for any needed directory separators, one per component,
+ * and one for the trailing null
+ */
+ len = 1 + homelen + 1 + dirlen + 1 + themelen + 1;
+
+ full = malloc (len);
+ if (!full)
+ return NULL;
+ full[0] = '\0';
+
+ if (home)
+ _XcursorAddPathElt (full, home, -1);
+ _XcursorAddPathElt (full, dir, dirlen);
+ _XcursorAddPathElt (full, theme, themelen);
+ return full;
+}
+
+static char *
+_XcursorBuildFullname (const char *dir, const char *subdir, const char *file)
+{
+ char *full;
+
+ if (!dir || !subdir || !file)
+ return NULL;
+
+ full = malloc (strlen (dir) + 1 + strlen (subdir) + 1 + strlen (file) + 1);
+ if (!full)
+ return NULL;
+ full[0] = '\0';
+ _XcursorAddPathElt (full, dir, -1);
+ _XcursorAddPathElt (full, subdir, -1);
+ _XcursorAddPathElt (full, file, -1);
+ return full;
+}
+
+static const char *
+_XcursorNextPath (const char *path)
+{
+ char *colon = strchr (path, ':');
+
+ if (!colon)
+ return NULL;
+ return colon + 1;
+}
+
+#define XcursorWhite(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
+#define XcursorSep(c) ((c) == ';' || (c) == ',')
+
+static char *
+_XcursorThemeInherits (const char *full)
+{
+ char line[8192];
+ char *result = NULL;
+ FILE *f;
+
+ if (!full)
+ return NULL;
+
+ f = fopen (full, "r");
+ if (f)
+ {
+ while (fgets (line, sizeof (line), f))
+ {
+ if (!strncmp (line, "Inherits", 8))
+ {
+ char *l = line + 8;
+ char *r;
+ while (*l == ' ') l++;
+ if (*l != '=') continue;
+ l++;
+ while (*l == ' ') l++;
+ result = malloc (strlen (l) + 1);
+ if (result)
+ {
+ r = result;
+ while (*l)
+ {
+ while (XcursorSep(*l) || XcursorWhite (*l)) l++;
+ if (!*l)
+ break;
+ if (r != result)
+ *r++ = ':';
+ while (*l && !XcursorWhite(*l) &&
+ !XcursorSep(*l))
+ *r++ = *l++;
+ }
+ *r++ = '\0';
+ }
+ break;
+ }
+ }
+ fclose (f);
+ }
+ return result;
+}
+
+static FILE *
+XcursorScanTheme (const char *theme, const char *name)
+{
+ FILE *f = NULL;
+ char *full;
+ char *dir;
+ const char *path;
+ char *inherits = NULL;
+ const char *i;
+
+ if (!theme || !name)
+ return NULL;
+
+ /*
+ * Scan this theme
+ */
+ for (path = XcursorLibraryPath ();
+ path && f == NULL;
+ path = _XcursorNextPath (path))
+ {
+ dir = _XcursorBuildThemeDir (path, theme);
+ if (dir)
+ {
+ full = _XcursorBuildFullname (dir, "cursors", name);
+ if (full)
+ {
+ f = fopen (full, "r");
+ free (full);
+ }
+ if (!f && !inherits)
+ {
+ full = _XcursorBuildFullname (dir, "", "index.theme");
+ if (full)
+ {
+ inherits = _XcursorThemeInherits (full);
+ free (full);
+ }
+ }
+ free (dir);
+ }
+ }
+ /*
+ * Recurse to scan inherited themes
+ */
+ for (i = inherits; i && f == NULL; i = _XcursorNextPath (i))
+ f = XcursorScanTheme (i, name);
+ if (inherits != NULL)
+ free (inherits);
+ return f;
+}
+
+XcursorImages *
+XcursorLibraryLoadImages (const char *file, const char *theme, int size)
+{
+ FILE *f = NULL;
+ XcursorImages *images = NULL;
+
+ if (!file)
+ return NULL;
+
+ if (theme)
+ f = XcursorScanTheme (theme, file);
+ if (!f)
+ f = XcursorScanTheme ("default", file);
+ if (f)
+ {
+ images = XcursorFileLoadImages (f, size);
+ if (images)
+ XcursorImagesSetName (images, file);
+ fclose (f);
+ }
+ return images;
+}
+
+static void
+load_all_cursors_from_dir(const char *path, int size,
+ void (*load_callback)(XcursorImages *, void *),
+ void *user_data)
+{
+ FILE *f;
+ DIR *dir = opendir(path);
+ struct dirent *ent;
+ char *full;
+ XcursorImages *images;
+
+ if (!dir)
+ return;
+
+ for(ent = readdir(dir); ent; ent = readdir(dir)) {
+#ifdef _DIRENT_HAVE_D_TYPE
+ if (ent->d_type != DT_UNKNOWN &&
+ (ent->d_type != DT_REG && ent->d_type != DT_LNK))
+ continue;
+#endif
+
+ full = _XcursorBuildFullname(path, "", ent->d_name);
+ if (!full)
+ continue;
+
+ f = fopen(full, "r");
+ if (!f) {
+ free(full);
+ continue;
+ }
+
+ images = XcursorFileLoadImages(f, size);
+
+ if (images) {
+ XcursorImagesSetName(images, ent->d_name);
+ load_callback(images, user_data);
+ }
+
+ fclose (f);
+ free(full);
+ }
+
+ closedir(dir);
+}
+
+/** Load all the cursor of a theme
+ *
+ * This function loads all the cursor images of a given theme and its
+ * inherited themes. Each cursor is loaded into an XcursorImages object
+ * which is passed to the caller's load callback. If a cursor appears
+ * more than once across all the inherited themes, the load callback
+ * will be called multiple times, with possibly different XcursorImages
+ * object which have the same name. The user is expected to destroy the
+ * XcursorImages objects passed to the callback with
+ * XcursorImagesDestroy().
+ *
+ * \param theme The name of theme that should be loaded
+ * \param size The desired size of the cursor images
+ * \param load_callback A callback function that will be called
+ * for each cursor loaded. The first parameter is the XcursorImages
+ * object representing the loaded cursor and the second is a pointer
+ * to data provided by the user.
+ * \param user_data The data that should be passed to the load callback
+ */
+void
+xcursor_load_theme(const char *theme, int size,
+ void (*load_callback)(XcursorImages *, void *),
+ void *user_data)
+{
+ char *full, *dir;
+ char *inherits = NULL;
+ const char *path, *i;
+
+ if (!theme)
+ theme = "default";
+
+ for (path = XcursorLibraryPath();
+ path;
+ path = _XcursorNextPath(path)) {
+ dir = _XcursorBuildThemeDir(path, theme);
+ if (!dir)
+ continue;
+
+ full = _XcursorBuildFullname(dir, "cursors", "");
+
+ if (full) {
+ load_all_cursors_from_dir(full, size, load_callback,
+ user_data);
+ free(full);
+ }
+
+ if (!inherits) {
+ full = _XcursorBuildFullname(dir, "", "index.theme");
+ if (full) {
+ inherits = _XcursorThemeInherits(full);
+ free(full);
+ }
+ }
+
+ free(dir);
+ }
+
+ for (i = inherits; i; i = _XcursorNextPath(i))
+ xcursor_load_theme(i, size, load_callback, user_data);
+
+ if (inherits)
+ free(inherits);
+}
diff --git a/gdk/wayland/cursor/xcursor.h b/gdk/wayland/cursor/xcursor.h
new file mode 100644
index 0000000000..62e232202a
--- /dev/null
+++ b/gdk/wayland/cursor/xcursor.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright © 2002 Keith Packard
+ *
+ * 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 (including the
+ * next paragraph) 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 OR COPYRIGHT HOLDERS
+ * 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.
+ */
+
+#ifndef XCURSOR_H
+#define XCURSOR_H
+
+typedef int XcursorBool;
+typedef unsigned int XcursorUInt;
+
+typedef XcursorUInt XcursorDim;
+typedef XcursorUInt XcursorPixel;
+
+typedef struct _XcursorImage {
+ XcursorUInt version; /* version of the image data */
+ XcursorDim size; /* nominal size for matching */
+ XcursorDim width; /* actual width */
+ XcursorDim height; /* actual height */
+ XcursorDim xhot; /* hot spot x (must be inside image) */
+ XcursorDim yhot; /* hot spot y (must be inside image) */
+ XcursorUInt delay; /* animation delay to next frame (ms) */
+ XcursorPixel *pixels; /* pointer to pixels */
+} XcursorImage;
+
+/*
+ * Other data structures exposed by the library API
+ */
+typedef struct _XcursorImages {
+ int nimage; /* number of images */
+ XcursorImage **images; /* array of XcursorImage pointers */
+ char *name; /* name used to load images */
+} XcursorImages;
+
+XcursorImages *
+XcursorLibraryLoadImages (const char *file, const char *theme, int size);
+
+void
+XcursorImagesDestroy (XcursorImages *images);
+
+void
+xcursor_load_theme(const char *theme, int size,
+ void (*load_callback)(XcursorImages *, void *),
+ void *user_data);
+#endif
diff --git a/gdk/wayland/meson.build b/gdk/wayland/meson.build
index fe094bb7e4..a6fe2a88c5 100644
--- a/gdk/wayland/meson.build
+++ b/gdk/wayland/meson.build
@@ -1,3 +1,5 @@
+subdir('cursor')
+
gdk_wayland_sources = files([
'gdkapplaunchcontext-wayland.c',
'gdkcairocontext-wayland.c',
@@ -33,7 +35,6 @@ gdk_wayland_deps = [
xkbdep,
wlclientdep,
wlprotocolsdep,
- wlcursordep,
wlegldep,
]
@@ -105,4 +106,5 @@ libgdk_wayland = static_library('gdk-wayland',
'-DG_LOG_DOMAIN="Gdk"',
] + common_cflags,
link_args: common_ldflags,
- dependencies: [ gdk_deps, gdk_wayland_deps, ])
+ link_with: [libwayland_cursor, ],
+ dependencies: [ gdk_deps, gdk_wayland_deps])
diff --git a/meson.build b/meson.build
index 22a211c4fc..1c3b93aab9 100644
--- a/meson.build
+++ b/meson.build
@@ -453,7 +453,6 @@ wayland_pkgs = []
if wayland_enabled
wlclientdep = dependency('wayland-client', version: wayland_req)
wlprotocolsdep = dependency('wayland-protocols', version: wayland_proto_req)
- wlcursordep = dependency('wayland-cursor', version: wayland_req)
wlegldep = dependency('wayland-egl')
backend_immodules += ['wayland']
@@ -461,7 +460,6 @@ if wayland_enabled
'wayland-client', wayland_req,
'wayland-protocols', wayland_proto_req,
'xkbcommon', xkbcommon_req,
- 'wayland-cursor', wayland_req,
'wayland-egl',
]
endif
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