wip: fork

1 files changed, 0 insertions, 2796 deletions

diff --git a/libdecor/src/plugins/cairo/libdecor-cairo.c b/libdecor/src/plugins/cairo/libdecor-cairo.c
deleted file mode 100644
index d8854bc8e..000000000
--- a/libdecor/src/plugins/cairo/libdecor-cairo.c
+++ /dev/null
@@ -1,2796 +0,0 @@
-/*
- * Copyright © 2018 Jonas Ådahl
- * Copyright © 2019 Christian Rauch
- *
- * 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 <linux/input.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <errno.h>
-#include <limits.h>
-#include <wayland-cursor.h>
-
-#include "libdecor-plugin.h"
-#include "utils.h"
-#include "desktop-settings.h"
-#include "os-compatibility.h"
-
-#include <cairo/cairo.h>
-#include <pango/pangocairo.h>
-
-#include "common/libdecor-cairo-blur.h"
-
-static const size_t SHADOW_MARGIN = 24;	/* graspable part of the border */
-static const size_t TITLE_HEIGHT = 24;
-static const size_t BUTTON_WIDTH = 32;
-static const size_t SYM_DIM = 14;
-
-static const uint32_t COL_TITLE = 0xFF080706;
-static const uint32_t COL_TITLE_INACT = 0xFF303030;
-static const uint32_t COL_BUTTON_MIN = 0xFFFFBB00;
-static const uint32_t COL_BUTTON_MAX = 0xFF238823;
-static const uint32_t COL_BUTTON_CLOSE = 0xFFFB6542;
-static const uint32_t COL_BUTTON_INACT = 0xFF404040;
-static const uint32_t COL_SYM = 0xFFF4F4EF;
-static const uint32_t COL_SYM_ACT = 0xFF20322A;
-static const uint32_t COL_SYM_INACT = 0xFF909090;
-
-static const uint32_t DOUBLE_CLICK_TIME_MS = 400;
-
-static const char *cursor_names[] = {
-	"top_side",
-	"bottom_side",
-	"left_side",
-	"top_left_corner",
-	"bottom_left_corner",
-	"right_side",
-	"top_right_corner",
-	"bottom_right_corner"
-};
-
-
-/* color conversion function from 32bit integer to double components */
-
-double
-red(const uint32_t *const col) {
-	return ((const uint8_t*)(col))[2] / (double)(255);
-}
-
-double
-green(const uint32_t *const col) {
-	return ((const uint8_t*)(col))[1] / (double)(255);
-}
-
-double
-blue(const uint32_t *const col) {
-	return ((const uint8_t*)(col))[0] / (double)(255);
-}
-
-double
-alpha(const uint32_t *const col) {
-	return ((const uint8_t*)(col))[3] / (double)(255);
-}
-
-void
-cairo_set_rgba32(cairo_t *cr, const uint32_t *const c) {
-	cairo_set_source_rgba(cr, red(c), green(c), blue(c), alpha(c));
-}
-
-static bool
-streql(const char *str1, const char *str2)
-{
-	return (str1 && str2) && (strcmp(str1, str2) == 0);
-}
-
-enum decoration_type {
-	DECORATION_TYPE_NONE,
-	DECORATION_TYPE_ALL,
-	DECORATION_TYPE_MAXIMIZED,
-	DECORATION_TYPE_TILED
-};
-
-enum component {
-	NONE = 0,
-	SHADOW,
-	TITLE,
-	BUTTON_MIN,
-	BUTTON_MAX,
-	BUTTON_CLOSE,
-};
-
-enum composite_mode {
-	COMPOSITE_SERVER,
-	COMPOSITE_CLIENT,
-};
-
-struct seat {
-	struct libdecor_plugin_cairo *plugin_cairo;
-
-	char *name;
-
-	struct wl_seat *wl_seat;
-	struct wl_pointer *wl_pointer;
-
-	struct wl_surface *cursor_surface;
-	struct wl_cursor *current_cursor;
-	int cursor_scale;
-	struct wl_list cursor_outputs;
-
-	struct wl_cursor_theme *cursor_theme;
-	/* cursors for resize edges and corners */
-	struct wl_cursor *cursors[ARRAY_LENGTH(cursor_names)];
-	struct wl_cursor *cursor_left_ptr;
-
-	struct wl_surface *pointer_focus;
-	struct libdecor_frame_cairo *pointer_focus_frame;
-
-	int pointer_x, pointer_y;
-
-	uint32_t pointer_button_time_stamp;
-
-	uint32_t serial;
-
-	bool grabbed;
-
-	struct wl_list link;
-};
-
-struct output {
-	struct libdecor_plugin_cairo *plugin_cairo;
-
-	struct wl_output *wl_output;
-	uint32_t id;
-	int scale;
-
-	struct wl_list link;
-};
-
-struct buffer {
-	struct wl_buffer *wl_buffer;
-	bool in_use;
-	bool is_detached;
-
-	void *data;
-	size_t data_size;
-	int width;
-	int height;
-	int scale;
-	int buffer_width;
-	int buffer_height;
-};
-
-struct border_component {
-	enum component type;
-
-	bool is_hidden;
-	bool opaque;
-
-	enum composite_mode composite_mode;
-	struct {
-		struct wl_surface *wl_surface;
-		struct wl_subsurface *wl_subsurface;
-		struct buffer *buffer;
-		struct wl_list output_list;
-		int scale;
-	} server;
-	struct {
-		cairo_surface_t *image;
-		struct border_component *parent_component;
-	} client;
-
-	struct wl_list child_components; /* border_component::link */
-	struct wl_list link; /* border_component::child_components */
-};
-
-struct surface_output {
-	struct output *output;
-	struct wl_list link;
-};
-
-struct cursor_output {
-	struct output *output;
-	struct wl_list link;
-};
-
-struct libdecor_frame_cairo {
-	struct libdecor_frame frame;
-
-	struct libdecor_plugin_cairo *plugin_cairo;
-
-	int content_width;
-	int content_height;
-
-	enum decoration_type decoration_type;
-
-	enum libdecor_window_state window_state;
-
-	char *title;
-
-	enum libdecor_capabilities capabilities;
-
-	struct border_component *focus;
-	struct border_component *active;
-	struct border_component *grab;
-
-	bool shadow_showing;
-	struct border_component shadow;
-
-	struct {
-		bool is_showing;
-		struct border_component title;
-		struct border_component min;
-		struct border_component max;
-		struct border_component close;
-	} title_bar;
-
-	/* store pre-processed shadow tile */
-	cairo_surface_t *shadow_blur;
-
-	struct wl_list link;
-};
-
-struct libdecor_plugin_cairo {
-	struct libdecor_plugin plugin;
-
-	struct wl_callback *globals_callback;
-	struct wl_callback *globals_callback_shm;
-
-	struct libdecor *context;
-
-	struct wl_registry *wl_registry;
-	struct wl_subcompositor *wl_subcompositor;
-	struct wl_compositor *wl_compositor;
-
-	struct wl_shm *wl_shm;
-	struct wl_callback *shm_callback;
-	bool has_argb;
-
-	struct wl_list visible_frame_list;
-	struct wl_list seat_list;
-	struct wl_list output_list;
-
-	char *cursor_theme_name;
-	int cursor_size;
-
-	PangoFontDescription *font;
-
-	bool handle_cursor;
-};
-
-static const char *libdecor_cairo_proxy_tag = "libdecor-cairo";
-
-static void
-sync_active_component(struct libdecor_frame_cairo *frame_cairo,
-		      struct seat *seat);
-
-static void
-synthesize_pointer_enter(struct seat *seat);
-
-static void
-synthesize_pointer_leave(struct seat *seat);
-
-static bool
-own_proxy(struct wl_proxy *proxy)
-{
-	if (!proxy)
-		return false;
-
-	return (wl_proxy_get_tag(proxy) == &libdecor_cairo_proxy_tag);
-}
-
-static bool
-own_surface(struct wl_surface *surface)
-{
-	return own_proxy((struct wl_proxy *) surface);
-}
-
-static bool
-own_output(struct wl_output *output)
-{
-	return own_proxy((struct wl_proxy *) output);
-}
-
-static bool
-moveable(struct libdecor_frame_cairo *frame_cairo) {
-	return libdecor_frame_has_capability(&frame_cairo->frame,
-					     LIBDECOR_ACTION_MOVE);
-}
-
-static bool
-resizable(struct libdecor_frame_cairo *frame_cairo) {
-	return libdecor_frame_has_capability(&frame_cairo->frame,
-					     LIBDECOR_ACTION_RESIZE);
-}
-
-static bool
-minimizable(struct libdecor_frame_cairo *frame_cairo) {
-	return libdecor_frame_has_capability(&frame_cairo->frame,
-					     LIBDECOR_ACTION_MINIMIZE);
-}
-
-static bool
-closeable(struct libdecor_frame_cairo *frame_cairo) {
-	return libdecor_frame_has_capability(&frame_cairo->frame,
-					     LIBDECOR_ACTION_CLOSE);
-}
-
-static void
-buffer_free(struct buffer *buffer);
-
-static void
-draw_border_component(struct libdecor_frame_cairo *frame_cairo,
-		      struct border_component *border_component);
-
-static void
-send_cursor(struct seat *seat);
-
-static bool
-update_local_cursor(struct seat *seat);
-
-static void
-libdecor_plugin_cairo_destroy(struct libdecor_plugin *plugin)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-	struct seat *seat, *seat_tmp;
-	struct output *output, *output_tmp;
-	struct libdecor_frame_cairo *frame, *frame_tmp;
-
-	if (plugin_cairo->globals_callback)
-		wl_callback_destroy(plugin_cairo->globals_callback);
-	if (plugin_cairo->globals_callback_shm)
-		wl_callback_destroy(plugin_cairo->globals_callback_shm);
-	if (plugin_cairo->shm_callback)
-		wl_callback_destroy(plugin_cairo->shm_callback);
-	wl_registry_destroy(plugin_cairo->wl_registry);
-
-	wl_list_for_each_safe(seat, seat_tmp, &plugin_cairo->seat_list, link) {
-		struct cursor_output *cursor_output, *tmp;
-
-		if (seat->wl_pointer)
-			wl_pointer_destroy(seat->wl_pointer);
-		if (seat->cursor_surface)
-			wl_surface_destroy(seat->cursor_surface);
-		wl_seat_destroy(seat->wl_seat);
-		if (seat->cursor_theme)
-			wl_cursor_theme_destroy(seat->cursor_theme);
-
-		wl_list_for_each_safe(cursor_output, tmp, &seat->cursor_outputs, link) {
-			wl_list_remove(&cursor_output->link);
-			free(cursor_output);
-		}
-		free(seat->name);
-
-		free(seat);
-	}
-
-	wl_list_for_each_safe(output, output_tmp,
-			      &plugin_cairo->output_list, link) {
-		if (wl_output_get_version (output->wl_output) >=
-		    WL_OUTPUT_RELEASE_SINCE_VERSION)
-			wl_output_release(output->wl_output);
-		else
-			wl_output_destroy(output->wl_output);
-		free(output);
-	}
-
-	wl_list_for_each_safe(frame, frame_tmp,
-			      &plugin_cairo->visible_frame_list, link) {
-		wl_list_remove(&frame->link);
-	}
-
-	free(plugin_cairo->cursor_theme_name);
-
-	if (plugin_cairo->wl_shm)
-		wl_shm_destroy(plugin_cairo->wl_shm);
-
-	pango_font_description_free(plugin_cairo->font);
-
-	if (plugin_cairo->wl_compositor)
-		wl_compositor_destroy(plugin_cairo->wl_compositor);
-	if (plugin_cairo->wl_subcompositor)
-		wl_subcompositor_destroy(plugin_cairo->wl_subcompositor);
-
-	libdecor_plugin_release(&plugin_cairo->plugin);
-	free(plugin_cairo);
-}
-
-static void
-init_server_component(struct border_component *border_component,
-		      enum component type)
-{
-	border_component->composite_mode = COMPOSITE_SERVER;
-	wl_list_init(&border_component->child_components);
-	border_component->type = type;
-}
-
-static void
-init_client_component(struct border_component *border_component,
-		      struct border_component *parent,
-		      enum component type)
-{
-	border_component->composite_mode = COMPOSITE_CLIENT;
-	wl_list_init(&border_component->child_components);
-	wl_list_insert(parent->child_components.prev, &border_component->link);
-	border_component->client.parent_component = parent;
-	border_component->type = type;
-}
-
-static void
-init_components(struct libdecor_frame_cairo *frame_cairo)
-{
-	init_server_component(&frame_cairo->title_bar.title,
-			      TITLE);
-	init_client_component(&frame_cairo->title_bar.min,
-			      &frame_cairo->title_bar.title,
-			      BUTTON_MIN);
-	init_client_component(&frame_cairo->title_bar.max,
-			      &frame_cairo->title_bar.title,
-			      BUTTON_MAX);
-	init_client_component(&frame_cairo->title_bar.close,
-			      &frame_cairo->title_bar.title,
-			      BUTTON_CLOSE);
-	init_server_component(&frame_cairo->shadow,
-			      SHADOW);
-}
-
-static struct libdecor_frame_cairo *
-libdecor_frame_cairo_new(struct libdecor_plugin_cairo *plugin_cairo)
-{
-	struct libdecor_frame_cairo *frame_cairo = zalloc(sizeof *frame_cairo);
-	cairo_t *cr;
-
-	static const int size = 128;
-	static const int boundary = 32;
-
-	frame_cairo->plugin_cairo = plugin_cairo;
-	frame_cairo->shadow_blur = cairo_image_surface_create(
-					CAIRO_FORMAT_ARGB32, size, size);
-	wl_list_insert(&plugin_cairo->visible_frame_list, &frame_cairo->link);
-
-	init_components(frame_cairo);
-
-	cr = cairo_create(frame_cairo->shadow_blur);
-	cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
-	cairo_set_source_rgba(cr, 0, 0, 0, 1);
-	cairo_rectangle(cr, boundary, boundary, size-2*boundary, size-2*boundary);
-	cairo_fill(cr);
-	cairo_destroy(cr);
-	blur_surface(frame_cairo->shadow_blur, 64);
-
-	return frame_cairo;
-}
-
-static int
-libdecor_plugin_cairo_get_fd(struct libdecor_plugin *plugin)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-	struct wl_display *wl_display =
-		libdecor_get_wl_display(plugin_cairo->context);
-
-	return wl_display_get_fd(wl_display);
-}
-
-static int
-libdecor_plugin_cairo_dispatch(struct libdecor_plugin *plugin,
-			       int timeout)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-	struct wl_display *wl_display =
-		libdecor_get_wl_display(plugin_cairo->context);
-	struct pollfd fds[1];
-	int ret;
-	int dispatch_count = 0;
-
-	while (wl_display_prepare_read(wl_display) != 0)
-		dispatch_count += wl_display_dispatch_pending(wl_display);
-
-	if (wl_display_flush(wl_display) < 0 &&
-	    errno != EAGAIN) {
-		wl_display_cancel_read(wl_display);
-		return -errno;
-	}
-
-	fds[0] = (struct pollfd) { wl_display_get_fd(wl_display), POLLIN };
-
-	ret = poll(fds, ARRAY_SIZE (fds), timeout);
-	if (ret > 0) {
-		if (fds[0].revents & POLLIN) {
-			wl_display_read_events(wl_display);
-			dispatch_count += wl_display_dispatch_pending(wl_display);
-			return dispatch_count;
-		} else {
-			wl_display_cancel_read(wl_display);
-			return dispatch_count;
-		}
-	} else if (ret == 0) {
-		wl_display_cancel_read(wl_display);
-		return dispatch_count;
-	} else {
-		wl_display_cancel_read(wl_display);
-		return -errno;
-	}
-}
-
-static void
-libdecor_plugin_cairo_set_handle_application_cursor(struct libdecor_plugin *plugin,
-						    bool handle_cursor)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-
-	plugin_cairo->handle_cursor = handle_cursor;
-}
-
-static struct libdecor_frame *
-libdecor_plugin_cairo_frame_new(struct libdecor_plugin *plugin)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-	struct libdecor_frame_cairo *frame_cairo;
-
-	frame_cairo = libdecor_frame_cairo_new(plugin_cairo);
-
-	return &frame_cairo->frame;
-}
-
-static void
-toggle_maximized(struct libdecor_frame *const frame)
-{
-	if (!resizable((struct libdecor_frame_cairo *)frame))
-		return;
-
-	if (!(libdecor_frame_get_window_state(frame) &
-	      LIBDECOR_WINDOW_STATE_MAXIMIZED))
-		libdecor_frame_set_maximized(frame);
-	else
-		libdecor_frame_unset_maximized(frame);
-}
-
-static void
-buffer_release(void *user_data,
-	       struct wl_buffer *wl_buffer)
-{
-	struct buffer *buffer = user_data;
-
-	if (buffer->is_detached)
-		buffer_free(buffer);
-	else
-		buffer->in_use = false;
-}
-
-static const struct wl_buffer_listener buffer_listener = {
-	buffer_release
-};
-
-static struct buffer *
-create_shm_buffer(struct libdecor_plugin_cairo *plugin_cairo,
-		  int width,
-		  int height,
-		  bool opaque,
-		  int scale)
-{
-	struct wl_shm_pool *pool;
-	int fd, size, buffer_width, buffer_height, stride;
-	void *data;
-	struct buffer *buffer;
-	enum wl_shm_format buf_fmt;
-
-	buffer_width = width * scale;
-	buffer_height = height * scale;
-	stride = buffer_width * 4;
-	size = stride * buffer_height;
-
-	fd = libdecor_os_create_anonymous_file(size);
-	if (fd < 0) {
-		fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
-			size, strerror(errno));
-		return NULL;
-	}
-
-	data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-	if (data == MAP_FAILED) {
-		fprintf(stderr, "mmap failed: %s\n", strerror(errno));
-		close(fd);
-		return NULL;
-	}
-
-	buf_fmt = opaque ? WL_SHM_FORMAT_XRGB8888 : WL_SHM_FORMAT_ARGB8888;
-
-	pool = wl_shm_create_pool(plugin_cairo->wl_shm, fd, size);
-	buffer = zalloc(sizeof *buffer);
-	buffer->wl_buffer = wl_shm_pool_create_buffer(pool, 0,
-						      buffer_width, buffer_height,
-						      stride,
-						      buf_fmt);
-	wl_buffer_add_listener(buffer->wl_buffer, &buffer_listener, buffer);
-	wl_shm_pool_destroy(pool);
-	close(fd);
-
-	buffer->data = data;
-	buffer->data_size = size;
-	buffer->width = width;
-	buffer->height = height;
-	buffer->scale = scale;
-	buffer->buffer_width = buffer_width;
-	buffer->buffer_height = buffer_height;
-
-	return buffer;
-}
-
-static void
-buffer_free(struct buffer *buffer)
-{
-	if (buffer->wl_buffer) {
-		wl_buffer_destroy(buffer->wl_buffer);
-		munmap(buffer->data, buffer->data_size);
-		buffer->wl_buffer = NULL;
-		buffer->in_use = false;
-	}
-	free(buffer);
-}
-
-static void
-free_border_component(struct border_component *border_component)
-{
-	struct surface_output *surface_output, *surface_output_tmp;
-
-	if (border_component->server.wl_surface) {
-		wl_subsurface_destroy(border_component->server.wl_subsurface);
-		border_component->server.wl_subsurface = NULL;
-		wl_surface_destroy(border_component->server.wl_surface);
-		border_component->server.wl_surface = NULL;
-	}
-	if (border_component->server.buffer) {
-		buffer_free(border_component->server.buffer);
-		border_component->server.buffer = NULL;
-	}
-	if (border_component->client.image) {
-		cairo_surface_destroy(border_component->client.image);
-		border_component->client.image = NULL;
-	}
-	if (border_component->server.output_list.next != NULL) {
-		wl_list_for_each_safe(surface_output, surface_output_tmp,
-				      &border_component->server.output_list, link) {
-			wl_list_remove(&surface_output->link);
-			free(surface_output);
-		}
-	}
-}
-
-static void
-libdecor_plugin_cairo_frame_free(struct libdecor_plugin *plugin,
-				 struct libdecor_frame *frame)
-{
-	struct libdecor_plugin_cairo *plugin_cairo =
-		(struct libdecor_plugin_cairo *) plugin;
-	struct libdecor_frame_cairo *frame_cairo =
-		(struct libdecor_frame_cairo *) frame;
-	struct seat *seat;
-
-	wl_list_for_each(seat, &plugin_cairo->seat_list, link) {
-		if (seat->pointer_focus) {
-		    if (wl_surface_get_user_data(seat->pointer_focus) == frame_cairo)
-			    seat->pointer_focus = NULL;
-		    if (seat->pointer_focus_frame == frame_cairo)
-			    seat->pointer_focus_frame = NULL;
-		}
-	}
-
-	free_border_component(&frame_cairo->title_bar.title);
-	free_border_component(&frame_cairo->title_bar.min);
-	free_border_component(&frame_cairo->title_bar.max);
-	free_border_component(&frame_cairo->title_bar.close);
-	frame_cairo->title_bar.is_showing = false;
-	free_border_component(&frame_cairo->shadow);
-	frame_cairo->shadow_showing = false;
-	if (frame_cairo->shadow_blur != NULL) {
-		cairo_surface_destroy(frame_cairo->shadow_blur);
-		frame_cairo->shadow_blur = NULL;
-	}
-
-	free(frame_cairo->title);
-	frame_cairo->title = NULL;
-
-	frame_cairo->decoration_type = DECORATION_TYPE_NONE;
-
-	if (frame_cairo->link.next != NULL)
-		wl_list_remove(&frame_cairo->link);
-}
-
-static bool
-is_border_surfaces_showing(struct libdecor_frame_cairo *frame_cairo)
-{
-	return frame_cairo->shadow_showing;
-}
-
-static bool
-is_title_bar_surfaces_showing(struct libdecor_frame_cairo *frame_cairo)
-{
-	return frame_cairo->title_bar.is_showing;
-}
-
-static struct border_component *
-get_server_component(struct border_component *border_component)
-{
-	switch (border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		return border_component;
-	case COMPOSITE_CLIENT:
-		return get_server_component(border_component->client.parent_component);
-	}
-	return NULL;
-}
-
-static void
-redraw_border_component(struct libdecor_frame_cairo *frame_cairo,
-			struct border_component *border_component)
-{
-	struct border_component *server_component;
-
-	server_component = get_server_component(border_component);
-	draw_border_component(frame_cairo, server_component);
-}
-
-static void
-hide_border_component(struct libdecor_frame_cairo *frame_cairo,
-		      struct border_component *border_component)
-{
-	border_component->is_hidden = true;
-
-	switch (border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		if (!border_component->server.wl_surface)
-			return;
-
-		wl_surface_attach(border_component->server.wl_surface,
-				  NULL, 0, 0);
-		wl_surface_commit(border_component->server.wl_surface);
-		break;
-	case COMPOSITE_CLIENT:
-		redraw_border_component(frame_cairo, border_component);
-		break;
-	}
-}
-
-static void
-hide_border_surfaces(struct libdecor_frame_cairo *frame_cairo)
-{
-	hide_border_component(frame_cairo, &frame_cairo->shadow);
-	frame_cairo->shadow_showing = false;
-}
-
-static void
-hide_title_bar_surfaces(struct libdecor_frame_cairo *frame_cairo)
-{
-	hide_border_component(frame_cairo, &frame_cairo->title_bar.title);
-	hide_border_component(frame_cairo, &frame_cairo->title_bar.min);
-	hide_border_component(frame_cairo, &frame_cairo->title_bar.max);
-	hide_border_component(frame_cairo, &frame_cairo->title_bar.close);
-	frame_cairo->title_bar.is_showing = false;
-}
-
-static struct border_component *
-get_component_for_surface(struct libdecor_frame_cairo *frame_cairo,
-			  struct wl_surface *surface)
-{
-	if (frame_cairo->shadow.server.wl_surface == surface)
-		return &frame_cairo->shadow;
-	if (frame_cairo->title_bar.title.server.wl_surface == surface)
-		return &frame_cairo->title_bar.title;
-	return NULL;
-}
-
-static void
-calculate_component_size(struct libdecor_frame_cairo *frame_cairo,
-			 enum component component,
-			 int *component_x,
-			 int *component_y,
-			 int *component_width,
-			 int *component_height);
-
-static void
-update_component_focus(struct libdecor_frame_cairo *frame_cairo,
-		       struct wl_surface *surface,
-		       struct seat *seat)
-{
-	static struct border_component *border_component;
-	static struct border_component *child_component;
-	static struct border_component *focus_component;
-
-	border_component = get_component_for_surface(frame_cairo, surface);
-	if (!border_component) {
-		focus_component = NULL;
-		goto out;
-	}
-
-	focus_component = border_component;
-	wl_list_for_each(child_component, &border_component->child_components, link) {
-		int component_x = 0, component_y = 0;
-		int component_width = 0, component_height = 0;
-
-		calculate_component_size(frame_cairo, child_component->type,
-					 &component_x, &component_y,
-					 &component_width, &component_height);
-		if (seat->pointer_x >= component_x &&
-		    seat->pointer_x < component_x + component_width &&
-		    seat->pointer_y >= component_y &&
-		    seat->pointer_y < component_y + component_height) {
-			focus_component = child_component;
-			break;
-		}
-	}
-
-out:
-	if (frame_cairo->grab)
-		frame_cairo->active = frame_cairo->grab;
-	else
-		frame_cairo->active = focus_component;
-	frame_cairo->focus = focus_component;
-
-}
-
-static void
-ensure_component(struct libdecor_frame_cairo *frame_cairo,
-		 struct border_component *cmpnt);
-
-static bool
-redraw_scale(struct libdecor_frame_cairo *frame_cairo,
-	     struct border_component *cmpnt)
-{
-	struct surface_output *surface_output;
-	int scale = 1;
-
-	if (cmpnt->is_hidden)
-		return false;
-
-	ensure_component(frame_cairo, cmpnt);
-
-	wl_list_for_each(surface_output, &cmpnt->server.output_list, link) {
-		scale = MAX(scale, surface_output->output->scale);
-	}
-	if (scale != cmpnt->server.scale) {
-		cmpnt->server.scale = scale;
-		if ((cmpnt->type != SHADOW) || is_border_surfaces_showing(frame_cairo)) {
-			draw_border_component(frame_cairo, cmpnt);
-			return true;
-		}
-	}
-	return false;
-}
-
-static bool
-add_surface_output(struct libdecor_plugin_cairo *plugin_cairo,
-		   struct wl_output *wl_output,
-		   struct wl_list *list)
-{
-	struct output *output;
-	struct surface_output *surface_output;
-
-	if (!own_output(wl_output))
-		return false;
-
-	output = wl_output_get_user_data(wl_output);
-
-	if (output == NULL)
-		return false;
-
-	surface_output = zalloc(sizeof *surface_output);
-	surface_output->output = output;
-	wl_list_insert(list, &surface_output->link);
-	return true;
-}
-
-static void
-surface_enter(void *data,
-	      struct wl_surface *wl_surface,
-	      struct wl_output *wl_output)
-{
-	struct libdecor_frame_cairo *frame_cairo = data;
-	struct border_component *cmpnt;
-
-	if (!(own_surface(wl_surface) && own_output(wl_output)))
-	    return;
-
-	cmpnt = get_component_for_surface(frame_cairo, wl_surface);
-	if (cmpnt == NULL)
-		return;
-
-	if (!add_surface_output(frame_cairo->plugin_cairo, wl_output,
-				&cmpnt->server.output_list))
-		return;
-
-	if (redraw_scale(frame_cairo, cmpnt))
-		libdecor_frame_toplevel_commit(&frame_cairo->frame);
-}
-
-static bool
-remove_surface_output(struct wl_list *list, struct wl_output *wl_output)
-{
-	struct surface_output *surface_output;
-	wl_list_for_each(surface_output, list, link) {
-		if (surface_output->output->wl_output == wl_output) {
-			wl_list_remove(&surface_output->link);
-			free(surface_output);
-			return true;
-		}
-	}
-	return false;
-}
-
-static void
-surface_leave(void *data,
-	      struct wl_surface *wl_surface,
-	      struct wl_output *wl_output)
-{
-	struct libdecor_frame_cairo *frame_cairo = data;
-	struct border_component *cmpnt;
-
-	if (!(own_surface(wl_surface) && own_output(wl_output)))
-	    return;
-
-	cmpnt = get_component_for_surface(frame_cairo, wl_surface);
-	if (cmpnt == NULL)
-		return;
-
-	if (!remove_surface_output(&cmpnt->server.output_list, wl_output))
-		return;
-
-	if (redraw_scale(frame_cairo, cmpnt))
-		libdecor_frame_toplevel_commit(&frame_cairo->frame);
-}
-
-static struct wl_surface_listener surface_listener = {
-	surface_enter,
-	surface_leave,
-};
-
-static void
-create_surface_subsurface_pair(struct libdecor_frame_cairo *frame_cairo,
-			       struct wl_surface **out_wl_surface,
-			       struct wl_subsurface **out_wl_subsurface)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = frame_cairo->plugin_cairo;
-	struct libdecor_frame *frame = &frame_cairo->frame;
-	struct wl_compositor *wl_compositor = plugin_cairo->wl_compositor;
-	struct wl_subcompositor *wl_subcompositor = plugin_cairo->wl_subcompositor;
-	struct wl_surface *wl_surface;
-	struct wl_surface *parent;
-	struct wl_subsurface *wl_subsurface;
-
-	wl_surface = wl_compositor_create_surface(wl_compositor);
-	wl_proxy_set_tag((struct wl_proxy *) wl_surface,
-			 &libdecor_cairo_proxy_tag);
-
-	parent = libdecor_frame_get_wl_surface(frame);
-	wl_subsurface = wl_subcompositor_get_subsurface(wl_subcompositor,
-							wl_surface,
-							parent);
-
-	*out_wl_surface = wl_surface;
-	*out_wl_subsurface = wl_subsurface;
-}
-
-static void
-ensure_component(struct libdecor_frame_cairo *frame_cairo,
-		 struct border_component *cmpnt)
-{
-	switch (cmpnt->composite_mode) {
-	case COMPOSITE_SERVER:
-		if (!cmpnt->server.wl_surface) {
-			wl_list_init(&cmpnt->server.output_list);
-			cmpnt->server.scale = 1;
-			create_surface_subsurface_pair(frame_cairo,
-						       &cmpnt->server.wl_surface,
-						       &cmpnt->server.wl_subsurface);
-			wl_surface_add_listener(cmpnt->server.wl_surface,
-						&surface_listener,
-						frame_cairo);
-		}
-		break;
-	case COMPOSITE_CLIENT:
-			wl_list_init(&cmpnt->server.output_list);
-		break;
-	}
-
-	cmpnt->is_hidden = false;
-}
-
-static void
-ensure_border_surfaces(struct libdecor_frame_cairo *frame_cairo)
-{
-	int min_width, min_height, current_max_w, current_max_h;
-
-	frame_cairo->shadow.opaque = false;
-	ensure_component(frame_cairo, &frame_cairo->shadow);
-
-	libdecor_frame_get_min_content_size(&frame_cairo->frame,
-					    &min_width, &min_height);
-	min_width = MAX(min_width, (int)MAX(56, 4 * BUTTON_WIDTH));
-	min_height = MAX(min_height, (int)MAX(56, TITLE_HEIGHT + 1));
-	libdecor_frame_set_min_content_size(&frame_cairo->frame, min_width, min_height);
-	libdecor_frame_get_max_content_size(&frame_cairo->frame, &current_max_w, 
-		&current_max_h);
-	if (current_max_w && current_max_w < min_width) current_max_w = min_width;
-	if (current_max_h && current_max_h < min_height) current_max_h = min_height;
-	libdecor_frame_set_max_content_size(&frame_cairo->frame, current_max_w, 
-		current_max_h);
-}
-
-
-static void
-ensure_title_bar_surfaces(struct libdecor_frame_cairo *frame_cairo)
-{
-	frame_cairo->title_bar.title.opaque = true;
-	ensure_component(frame_cairo, &frame_cairo->title_bar.title);
-
-	frame_cairo->title_bar.min.opaque = true;
-	ensure_component(frame_cairo, &frame_cairo->title_bar.min);
-
-	frame_cairo->title_bar.max.opaque = true;
-	ensure_component(frame_cairo, &frame_cairo->title_bar.max);
-
-	frame_cairo->title_bar.close.opaque = true;
-	ensure_component(frame_cairo, &frame_cairo->title_bar.close);
-}
-
-static void
-calculate_component_size(struct libdecor_frame_cairo *frame_cairo,
-			 enum component component,
-			 int *component_x,
-			 int *component_y,
-			 int *component_width,
-			 int *component_height)
-{
-	struct libdecor_frame *frame = &frame_cairo->frame;
-	int content_width, content_height;
-
-	content_width = libdecor_frame_get_content_width(frame);
-	content_height = libdecor_frame_get_content_height(frame);
-
-	switch (component) {
-	case NONE:
-		*component_width = 0;
-		*component_height = 0;
-		return;
-	case SHADOW:
-		*component_x = -(int)SHADOW_MARGIN;
-		*component_y = -(int)(SHADOW_MARGIN+TITLE_HEIGHT);
-		*component_width = content_width + 2 * SHADOW_MARGIN;
-		*component_height = content_height
-				    + 2 * SHADOW_MARGIN
-				    + TITLE_HEIGHT;
-		return;
-	case TITLE:
-		*component_x = 0;
-		*component_y = -(int)TITLE_HEIGHT;
-		*component_width = content_width;
-		*component_height = TITLE_HEIGHT;
-		return;
-	case BUTTON_MIN:
-		*component_x = content_width - 3 * BUTTON_WIDTH;
-		*component_y = 0;
-		*component_width = BUTTON_WIDTH;
-		*component_height = TITLE_HEIGHT;
-		return;
-	case BUTTON_MAX:
-		*component_x = content_width - 2 * BUTTON_WIDTH;
-		*component_y = 0;
-		*component_width = BUTTON_WIDTH;
-		*component_height = TITLE_HEIGHT;
-		return;
-	case BUTTON_CLOSE:
-		*component_x = content_width - BUTTON_WIDTH;
-		*component_y = 0;
-		*component_width = BUTTON_WIDTH;
-		*component_height = TITLE_HEIGHT;
-		return;
-	}
-
-	abort();
-}
-
-static int
-border_component_get_scale(struct border_component *border_component)
-{
-	switch (border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		return border_component->server.scale;
-	case COMPOSITE_CLIENT:
-		return border_component_get_scale(
-				border_component->client.parent_component);
-	}
-	return 0;
-}
-
-static void
-draw_title_text(struct libdecor_frame_cairo *frame_cairo,
-		cairo_t *cr,
-		const int *title_width,
-		bool active)
-{
-	const uint32_t col_title = active ? COL_TITLE : COL_TITLE_INACT;
-	const uint32_t col_title_text = active ? COL_SYM : COL_SYM_INACT;
-
-	PangoLayout *layout;
-
-	/* title fade out at buttons */
-	const int fade_width = 5 * BUTTON_WIDTH;
-	int fade_start;
-	cairo_pattern_t *fade;
-
-	/* text position and dimensions */
-	int text_extents_width, text_extents_height;
-	double text_x, text_y;
-	double text_width, text_height;
-
-	const char *title;
-
-	title = libdecor_frame_get_title((struct libdecor_frame*) frame_cairo);
-	if (!title)
-		return;
-
-	layout = pango_cairo_create_layout(cr);
-
-	pango_layout_set_text(layout,
-			      title,
-			      -1);
-	pango_layout_set_font_description(layout, frame_cairo->plugin_cairo->font);
-	pango_layout_get_size(layout, &text_extents_width, &text_extents_height);
-
-	/* set text position and dimensions */
-	text_width = text_extents_width / PANGO_SCALE;
-	text_height = text_extents_height / PANGO_SCALE;
-	text_x = *title_width / 2.0 - text_width / 2.0;
-	text_x += MIN(0.0, ((*title_width - fade_width) - (text_x + text_width)));
-	text_x = MAX(text_x, BUTTON_WIDTH);
-	text_y = TITLE_HEIGHT / 2.0 - text_height / 2.0;
-
-	/* draw title text */
-	cairo_move_to(cr, text_x, text_y);
-	cairo_set_rgba32(cr, &col_title_text);
-	pango_cairo_show_layout(cr, layout);
-
-	/* draw fade-out from title text to buttons */
-	fade_start = *title_width - fade_width;
-	fade = cairo_pattern_create_linear(fade_start, 0,
-					   fade_start + 2 * BUTTON_WIDTH, 0);
-	cairo_pattern_add_color_stop_rgba(fade, 0,
-					  red(&col_title),
-					  green(&col_title),
-					  blue(&col_title),
-					  0);
-	cairo_pattern_add_color_stop_rgb(fade, 1,
-					 red(&col_title),
-					 green(&col_title),
-					 blue(&col_title));
-	cairo_rectangle(cr, fade_start, 0, fade_width, TITLE_HEIGHT);
-	cairo_set_source(cr, fade);
-	cairo_fill(cr);
-
-	cairo_pattern_destroy(fade);
-	g_object_unref(layout);
-}
-
-static void
-draw_component_content(struct libdecor_frame_cairo *frame_cairo,
-		       struct border_component *border_component,
-		       int component_width,
-		       int component_height,
-		       enum component component)
-{
-	struct buffer *buffer;
-	cairo_surface_t *surface = NULL;
-	int width = 0, height = 0;
-	int scale;
-	cairo_t *cr;
-
-	/* button symbol origin */
-	const double x = BUTTON_WIDTH / 2 - SYM_DIM / 2 + 0.5;
-	const double y = TITLE_HEIGHT / 2 - SYM_DIM / 2 + 0.5;
-
-	enum libdecor_window_state state;
-
-	bool active;
-
-	uint32_t col_title;
-
-	bool cap_min, cap_max, cap_close;
-
-	/* capabilities of decorations */
-	cap_min = minimizable(frame_cairo);
-	cap_max = resizable(frame_cairo);
-	cap_close = closeable(frame_cairo);
-
-	scale = border_component_get_scale(border_component);
-
-	state = libdecor_frame_get_window_state((struct libdecor_frame *) frame_cairo);
-
-	active = state & LIBDECOR_WINDOW_STATE_ACTIVE;
-
-	col_title = active ? COL_TITLE : COL_TITLE_INACT;
-
-	/* clear buffer */
-	switch (border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		buffer = border_component->server.buffer;
-
-		surface = cairo_image_surface_create_for_data(
-				  buffer->data, CAIRO_FORMAT_ARGB32,
-				  buffer->buffer_width, buffer->buffer_height,
-				  cairo_format_stride_for_width(
-					  CAIRO_FORMAT_ARGB32,
-					  buffer->buffer_width)
-				  );
-		cairo_surface_set_device_scale(surface, scale, scale);
-		width = buffer->width;
-		height = buffer->height;
-		break;
-	case COMPOSITE_CLIENT:
-		surface = cairo_surface_reference(border_component->client.image);
-		width = cairo_image_surface_get_width(surface);
-		height = cairo_image_surface_get_height(surface);
-		break;
-	}
-
-	cr = cairo_create(surface);
-	cairo_save(cr);
-	cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
-	cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
-	cairo_paint(cr);
-	cairo_restore(cr);
-
-	/* background */
-	switch (component) {
-	case NONE:
-		break;
-	case SHADOW:
-		if (frame_cairo->decoration_type != DECORATION_TYPE_TILED)
-			render_shadow(cr,
-				      frame_cairo->shadow_blur,
-				      -(int)SHADOW_MARGIN/2,
-				      -(int)SHADOW_MARGIN/2,
-				      width + SHADOW_MARGIN,
-				      height + SHADOW_MARGIN,
-				      64,
-				      64);
-		break;
-	case TITLE:
-		cairo_set_rgba32(cr, &col_title);
-		cairo_paint(cr);
-		break;
-	case BUTTON_MIN:
-		if (cap_min && frame_cairo->active == &frame_cairo->title_bar.min)
-			cairo_set_rgba32(cr, active ? &COL_BUTTON_MIN : &COL_BUTTON_INACT);
-		else
-			cairo_set_rgba32(cr, &col_title);
-		cairo_paint(cr);
-		break;
-	case BUTTON_MAX:
-		if (cap_max && frame_cairo->active == &frame_cairo->title_bar.max)
-			cairo_set_rgba32(cr, active ? &COL_BUTTON_MAX : &COL_BUTTON_INACT);
-		else
-			cairo_set_rgba32(cr, &col_title);
-		cairo_paint(cr);
-		break;
-	case BUTTON_CLOSE:
-		if (cap_close && frame_cairo->active == &frame_cairo->title_bar.close)
-			cairo_set_rgba32(cr, active ? &COL_BUTTON_CLOSE : &COL_BUTTON_INACT);
-		else
-			cairo_set_rgba32(cr, &col_title);
-		cairo_paint(cr);
-		break;
-	}
-
-	/* button symbols */
-	/* https://www.cairographics.org/FAQ/#sharp_lines */
-	cairo_set_line_width(cr, 1);
-
-	switch (component) {
-	case TITLE:
-		draw_title_text(frame_cairo,cr, &component_width, active);
-		break;
-	case BUTTON_MIN:
-		if (!active) {
-			/* inactive: use single desaturated color */
-			cairo_set_rgba32(cr, &COL_SYM_INACT);
-		} else {
-			if (!cap_min ||
-			    frame_cairo->active == &frame_cairo->title_bar.min) {
-				/* active (a.k.a. prelight) */
-				cairo_set_rgba32(cr, &COL_SYM_ACT);
-			} else {
-				/* normal */
-				cairo_set_rgba32(cr, &COL_SYM);
-			}
-		}
-		cairo_move_to(cr, x, y + SYM_DIM - 1);
-		cairo_rel_line_to(cr, SYM_DIM - 1, 0);
-		cairo_stroke(cr);
-		break;
-	case BUTTON_MAX:
-		if (!active) {
-			/* inactive: use single desaturated color */
-			cairo_set_rgba32(cr, &COL_SYM_INACT);
-		} else {
-			if (!cap_max ||
-			    frame_cairo->active == &frame_cairo->title_bar.max) {
-				/* active (a.k.a. prelight) */
-				cairo_set_rgba32(cr, &COL_SYM_ACT);
-			} else {
-				/* normal */
-				cairo_set_rgba32(cr, &COL_SYM);
-			}
-		}
-
-		if (state & LIBDECOR_WINDOW_STATE_MAXIMIZED) {
-			const size_t small = 12;
-			cairo_rectangle(cr,
-					x,
-					y + SYM_DIM - small,
-					small - 1,
-					small - 1);
-			cairo_move_to(cr,
-				      x + SYM_DIM - small,
-				      y + SYM_DIM - small);
-			cairo_line_to(cr, x + SYM_DIM - small, y);
-			cairo_rel_line_to(cr, small - 1, 0);
-			cairo_rel_line_to(cr, 0, small - 1);
-			cairo_line_to(cr, x + small - 1, y + small - 1);
-		} else {
-			cairo_rectangle(cr, x, y, SYM_DIM - 1, SYM_DIM - 1);
-		}
-		cairo_stroke(cr);
-		break;
-	case BUTTON_CLOSE:
-		if (!active) {
-			/* inactive: use single desaturated color */
-			cairo_set_rgba32(cr, &COL_SYM_INACT);
-		} else {
-			if (!cap_close ||
-			    frame_cairo->active == &frame_cairo->title_bar.close) {
-				/* active (a.k.a. prelight) */
-				cairo_set_rgba32(cr, &COL_SYM_ACT);
-			} else {
-				/* normal */
-				cairo_set_rgba32(cr, &COL_SYM);
-			}
-		}
-		cairo_move_to(cr, x, y);
-		cairo_rel_line_to(cr, SYM_DIM - 1, SYM_DIM - 1);
-		cairo_move_to(cr, x + SYM_DIM - 1, y);
-		cairo_line_to(cr, x, y + SYM_DIM - 1);
-		cairo_stroke(cr);
-		break;
-	default:
-		break;
-	}
-
-	/* mask the toplevel surface */
-	if (component == SHADOW) {
-		int component_x, component_y, component_width, component_height;
-		calculate_component_size(frame_cairo, component,
-					 &component_x, &component_y,
-					 &component_width, &component_height);
-		cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
-		cairo_rectangle(cr, -component_x, -component_y,
-				libdecor_frame_get_content_width(
-					&frame_cairo->frame),
-				libdecor_frame_get_content_height(
-					&frame_cairo->frame));
-		cairo_fill(cr);
-	}
-
-	cairo_destroy(cr);
-	cairo_surface_destroy(surface);
-}
-
-static void
-set_component_input_region(struct libdecor_frame_cairo *frame_cairo,
-			   struct border_component *border_component)
-{
-	if (border_component->type == SHADOW && frame_cairo->shadow_showing) {
-		struct wl_region *input_region;
-		int component_x;
-		int component_y;
-		int component_width;
-		int component_height;
-
-		calculate_component_size(frame_cairo, border_component->type,
-					 &component_x, &component_y,
-					 &component_width, &component_height);
-
-		/*
-		 * the input region is the outer surface size minus the inner
-		 * content size
-		 */
-		input_region = wl_compositor_create_region(
-				       frame_cairo->plugin_cairo->wl_compositor);
-		wl_region_add(input_region, 0, 0,
-			      component_width, component_height);
-		wl_region_subtract(input_region, -component_x, -component_y,
-			libdecor_frame_get_content_width(&frame_cairo->frame),
-			libdecor_frame_get_content_height(&frame_cairo->frame));
-		wl_surface_set_input_region(border_component->server.wl_surface,
-					    input_region);
-		wl_region_destroy(input_region);
-	}
-}
-
-static void
-ensure_component_realized_server(struct libdecor_frame_cairo *frame_cairo,
-				 struct border_component *border_component,
-				 int component_width,
-				 int component_height,
-				 int scale)
-{
-	struct buffer *old_buffer;
-	struct buffer *buffer = NULL;
-
-	old_buffer = border_component->server.buffer;
-	if (old_buffer) {
-		if (!old_buffer->in_use &&
-		    old_buffer->buffer_width == component_width * scale &&
-		    old_buffer->buffer_height == component_height * scale) {
-			buffer = old_buffer;
-		} else {
-			buffer_free(old_buffer);
-			border_component->server.buffer = NULL;
-		}
-	}
-
-	if (!buffer)
-		buffer = create_shm_buffer(frame_cairo->plugin_cairo,
-					   component_width,
-					   component_height,
-					   border_component->opaque,
-					   border_component->server.scale);
-
-	border_component->server.buffer = buffer;
-}
-
-static void
-ensure_component_realized_client(struct libdecor_frame_cairo *frame_cairo,
-				 struct border_component *border_component,
-				 int component_width,
-				 int component_height,
-				 int scale)
-{
-	cairo_surface_t *old_image;
-
-	old_image = border_component->client.image;
-	if (old_image) {
-		int cairo_buffer_width;
-		int cairo_buffer_height;
-		double x_scale;
-		double y_scale;
-
-		cairo_surface_get_device_scale(old_image, &x_scale, &y_scale);
-		cairo_buffer_width =
-			(int) round(cairo_image_surface_get_width(old_image) *
-				    x_scale);
-		cairo_buffer_height =
-			(int) round(cairo_image_surface_get_height(old_image) *
-				    y_scale);
-
-		if (cairo_buffer_width != component_width * scale ||
-		    cairo_buffer_height != component_height * scale) {
-			cairo_surface_destroy(old_image);
-			border_component->client.image = NULL;
-		}
-	}
-
-	if (!border_component->client.image) {
-		cairo_surface_t *new_image;
-
-		new_image =
-			cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
-						   component_width * scale,
-						   component_height * scale);
-		cairo_surface_set_device_scale(new_image, scale, scale);
-		border_component->client.image = new_image;
-	}
-
-}
-
-static void
-ensure_component_realized(struct libdecor_frame_cairo *frame_cairo,
-			  struct border_component *border_component,
-			  int component_width,
-			  int component_height,
-			  int scale)
-{
-	switch (border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		ensure_component_realized_server(frame_cairo, border_component,
-						 component_width,
-						 component_height,
-						 scale);
-		break;
-	case COMPOSITE_CLIENT:
-		ensure_component_realized_client(frame_cairo, border_component,
-						 component_width,
-						 component_height,
-						 scale);
-		break;
-	}
-}
-
-static cairo_t *
-create_cairo_for_parent(struct border_component *border_component)
-{
-	struct border_component *parent =
-		border_component->client.parent_component;
-	struct buffer *buffer;
-	struct border_component *server_component;
-	cairo_surface_t *parent_surface;
-	cairo_t *cr;
-
-	switch (parent->composite_mode) {
-	case COMPOSITE_SERVER:
-		buffer = parent->server.buffer;
-		parent_surface = cairo_image_surface_create_for_data(
-				  buffer->data, CAIRO_FORMAT_ARGB32,
-				  buffer->buffer_width, buffer->buffer_height,
-				  cairo_format_stride_for_width(
-					  CAIRO_FORMAT_ARGB32,
-					  buffer->buffer_width)
-				  );
-		cr = cairo_create(parent_surface);
-		cairo_surface_destroy(parent_surface);
-		cairo_scale(cr, buffer->scale, buffer->scale);
-		return cr;
-	case COMPOSITE_CLIENT:
-		cr = cairo_create(parent->client.image);
-		server_component = get_server_component(border_component);
-		cairo_scale(cr,
-			    server_component->server.scale,
-			    server_component->server.scale);
-		return cr;
-	}
-	return NULL;
-}
-
-static void
-draw_border_component(struct libdecor_frame_cairo *frame_cairo,
-		      struct border_component *border_component)
-{
-	enum component component = border_component->type;
-	struct buffer *buffer;
-	cairo_t *cr;
-	int component_x;
-	int component_y;
-	int component_width;
-	int component_height;
-	int scale;
-	struct border_component *child_component;
-
-	if (border_component->is_hidden)
-		return;
-
-	calculate_component_size(frame_cairo, component,
-				 &component_x, &component_y,
-				 &component_width, &component_height);
-
-	set_component_input_region(frame_cairo, border_component);
-
-	scale = border_component_get_scale(border_component);
-	ensure_component_realized(frame_cairo, border_component,
-				  component_width,
-				  component_height,
-				  scale);
-
-	draw_component_content(frame_cairo,
-			       border_component,
-			       component_width, component_height,
-			       component);
-
-	switch(border_component->composite_mode) {
-	case COMPOSITE_SERVER:
-		buffer = border_component->server.buffer;
-		wl_surface_attach(border_component->server.wl_surface,
-				  buffer->wl_buffer,
-				  0, 0);
-		wl_surface_set_buffer_scale(border_component->server.wl_surface,
-					    buffer->scale);
-		buffer->in_use = true;
-		wl_surface_commit(border_component->server.wl_surface);
-		wl_surface_damage_buffer(border_component->server.wl_surface, 0, 0,
-					 component_width * scale,
-					 component_height * scale);
-		wl_subsurface_set_position(border_component->server.wl_subsurface,
-					   component_x, component_y);
-		break;
-	case COMPOSITE_CLIENT:
-		cr = create_cairo_for_parent(border_component);
-		cairo_set_source_surface(cr,
-					 border_component->client.image,
-					 component_x, component_y);
-		cairo_paint(cr);
-		cairo_destroy(cr);
-		break;
-	}
-
-	wl_list_for_each(child_component, &border_component->child_components, link)
-		draw_border_component(frame_cairo, child_component);
-}
-
-static void
-draw_border(struct libdecor_frame_cairo *frame_cairo)
-{
-	draw_border_component(frame_cairo, &frame_cairo->shadow);
-	frame_cairo->shadow_showing = true;
-}
-
-static void
-draw_title_bar(struct libdecor_frame_cairo *frame_cairo)
-{
-	draw_border_component(frame_cairo, &frame_cairo->title_bar.title);
-	frame_cairo->title_bar.is_showing = true;
-}
-
-static void
-draw_decoration(struct libdecor_frame_cairo *frame_cairo)
-{
-	switch (frame_cairo->decoration_type) {
-	case DECORATION_TYPE_NONE:
-		if (frame_cairo->link.next != NULL)
-			wl_list_remove(&frame_cairo->link);
-		if (is_border_surfaces_showing(frame_cairo))
-			hide_border_surfaces(frame_cairo);
-		if (is_title_bar_surfaces_showing(frame_cairo))
-			hide_title_bar_surfaces(frame_cairo);
-		break;
-	case DECORATION_TYPE_TILED:
-	case DECORATION_TYPE_ALL:
-		/* show borders */
-		ensure_border_surfaces(frame_cairo);
-		draw_border(frame_cairo);
-		/* show title bar */
-		ensure_title_bar_surfaces(frame_cairo);
-		draw_title_bar(frame_cairo);
-		/* link frame */
-		if (frame_cairo->link.next == NULL)
-			wl_list_insert(
-				&frame_cairo->plugin_cairo->visible_frame_list,
-				&frame_cairo->link);
-		break;
-	case DECORATION_TYPE_MAXIMIZED:
-		/* hide borders */
-		if (is_border_surfaces_showing(frame_cairo))
-			hide_border_surfaces(frame_cairo);
-		/* show title bar */
-		ensure_title_bar_surfaces(frame_cairo);
-		draw_title_bar(frame_cairo);
-		/* link frame */
-		if (frame_cairo->link.next == NULL)
-			wl_list_insert(
-				&frame_cairo->plugin_cairo->visible_frame_list,
-				&frame_cairo->link);
-		break;
-	}
-}
-
-static enum decoration_type
-window_state_to_decoration_type(enum libdecor_window_state window_state)
-{
-	if (window_state & LIBDECOR_WINDOW_STATE_FULLSCREEN)
-		return DECORATION_TYPE_NONE;
-	else if (window_state & LIBDECOR_WINDOW_STATE_MAXIMIZED)
-		/* title bar, no shadows */
-		return DECORATION_TYPE_MAXIMIZED;
-	else if (window_state & LIBDECOR_WINDOW_STATE_TILED_LEFT ||
-		 window_state & LIBDECOR_WINDOW_STATE_TILED_RIGHT ||
-		 window_state & LIBDECOR_WINDOW_STATE_TILED_TOP ||
-		 window_state & LIBDECOR_WINDOW_STATE_TILED_BOTTOM)
-		/* title bar, invisible shadows */
-		return DECORATION_TYPE_TILED;
-	else
-		/* title bar, shadows */
-		return DECORATION_TYPE_ALL;
-}
-
-static void
-libdecor_plugin_cairo_frame_commit(struct libdecor_plugin *plugin,
-				   struct libdecor_frame *frame,
-				   struct libdecor_state *state,
-				   struct libdecor_configuration *configuration)
-{
-	struct libdecor_frame_cairo *frame_cairo =
-		(struct libdecor_frame_cairo *) frame;
-	enum libdecor_window_state old_window_state;
-	enum libdecor_window_state new_window_state;
-	int old_content_width, old_content_height;
-	int new_content_width, new_content_height;
-	enum decoration_type old_decoration_type;
-	enum decoration_type new_decoration_type;
-
-	old_window_state = frame_cairo->window_state;
-	new_window_state = libdecor_frame_get_window_state(frame);
-
-	old_content_width = frame_cairo->content_width;
-	old_content_height = frame_cairo->content_height;
-	new_content_width = libdecor_frame_get_content_width(frame);
-	new_content_height = libdecor_frame_get_content_height(frame);
-
-	old_decoration_type = frame_cairo->decoration_type;
-	new_decoration_type = window_state_to_decoration_type(new_window_state);
-
-	if (old_decoration_type == new_decoration_type &&
-	    old_content_width == new_content_width &&
-	    old_content_height == new_content_height &&
-	    old_window_state == new_window_state)
-		return;
-
-	frame_cairo->content_width = new_content_width;
-	frame_cairo->content_height = new_content_height;
-	frame_cairo->decoration_type = new_decoration_type;
-	frame_cairo->window_state = new_window_state;
-
-	draw_decoration(frame_cairo);
-}
-
-static void
-libdecor_plugin_cairo_frame_property_changed(struct libdecor_plugin *plugin,
-					     struct libdecor_frame *frame)
-{
-	struct libdecor_frame_cairo *frame_cairo =
-		(struct libdecor_frame_cairo *) frame;
-	bool redraw_needed = false;
-	const char *new_title;
-
-	new_title = libdecor_frame_get_title(frame);
-	if (frame_cairo->title_bar.is_showing) {
-		if (!streql(frame_cairo->title, new_title))
-			redraw_needed = true;
-	}
-
-	if (frame_cairo->title) {
-		free(frame_cairo->title);
-		frame_cairo->title = NULL;
-	}
-
-	if (new_title) {
-		frame_cairo->title = strdup(new_title);
-	}
-
-	if (frame_cairo->capabilities != libdecor_frame_get_capabilities(frame)) {
-		frame_cairo->capabilities = libdecor_frame_get_capabilities(frame);
-		redraw_needed = true;
-	}
-
-	if (redraw_needed) {
-		draw_decoration(frame_cairo);
-		libdecor_frame_toplevel_commit(frame);
-	}
-}
-
-static bool
-streq(const char *str1,
-      const char *str2)
-{
-	if (!str1 && !str2)
-		return true;
-
-	if (str1 && str2)
-		return strcmp(str1, str2) == 0;
-
-	return false;
-}
-
-static void
-libdecor_plugin_cairo_frame_popup_grab(struct libdecor_plugin *plugin,
-				       struct libdecor_frame *frame,
-				       const char *seat_name)
-{
-	struct libdecor_frame_cairo *frame_cairo =
-		(struct libdecor_frame_cairo *) frame;
-	struct libdecor_plugin_cairo *plugin_cairo = frame_cairo->plugin_cairo;
-	struct seat *seat;
-
-	wl_list_for_each(seat, &plugin_cairo->seat_list, link) {
-		if (streq(seat->name, seat_name)) {
-			if (seat->grabbed) {
-				fprintf(stderr, "libdecor-WARNING: Application "
-					"tried to grab seat twice\n");
-			}
-			synthesize_pointer_leave(seat);
-			seat->grabbed = true;
-			return;
-		}
-	}
-
-	fprintf(stderr,
-		"libdecor-WARNING: Application tried to grab unknown seat\n");
-}
-
-static void
-libdecor_plugin_cairo_frame_popup_ungrab(struct libdecor_plugin *plugin,
-					 struct libdecor_frame *frame,
-					 const char *seat_name)
-{
-	struct libdecor_frame_cairo *frame_cairo =
-		(struct libdecor_frame_cairo *) frame;
-	struct libdecor_plugin_cairo *plugin_cairo = frame_cairo->plugin_cairo;
-	struct seat *seat;
-
-	wl_list_for_each(seat, &plugin_cairo->seat_list, link) {
-		if (streq(seat->name, seat_name)) {
-			if (!seat->grabbed) {
-				fprintf(stderr, "libdecor-WARNING: Application "
-					"tried to ungrab seat twice\n");
-			}
-			seat->grabbed = false;
-			synthesize_pointer_enter(seat);
-			sync_active_component(frame_cairo, seat);
-			return;
-		}
-	}
-
-	fprintf(stderr,
-		"libdecor-WARNING: Application tried to ungrab unknown seat\n");
-}
-
-static bool
-libdecor_plugin_cairo_frame_get_border_size(struct libdecor_plugin *plugin,
-					    struct libdecor_frame *frame,
-					    struct libdecor_configuration *configuration,
-					    int *left,
-					    int *right,
-					    int *top,
-					    int *bottom)
-{
-	enum libdecor_window_state window_state;
-
-	if (configuration) {
-		if (!libdecor_configuration_get_window_state(
-			    configuration, &window_state))
-			return false;
-	} else {
-		window_state = libdecor_frame_get_window_state(frame);
-	}
-
-	if (left)
-		*left = 0;
-	if (right)
-		*right = 0;
-	if (bottom)
-		*bottom = 0;
-	if (top) {
-		enum decoration_type type = window_state_to_decoration_type(window_state);
-
-		if (((struct libdecor_frame_cairo *)frame)->title_bar.is_showing &&
-		    (type != DECORATION_TYPE_NONE))
-			*top = TITLE_HEIGHT;
-		else
-			*top = 0;
-	}
-
-	return true;
-}
-
-static struct libdecor_plugin_interface cairo_plugin_iface = {
-	.destroy = libdecor_plugin_cairo_destroy,
-	.get_fd = libdecor_plugin_cairo_get_fd,
-	.dispatch = libdecor_plugin_cairo_dispatch,
-
-	.set_handle_application_cursor = libdecor_plugin_cairo_set_handle_application_cursor,
-
-	.frame_new = libdecor_plugin_cairo_frame_new,
-	.frame_free = libdecor_plugin_cairo_frame_free,
-	.frame_commit = libdecor_plugin_cairo_frame_commit,
-	.frame_property_changed = libdecor_plugin_cairo_frame_property_changed,
-	.frame_popup_grab = libdecor_plugin_cairo_frame_popup_grab,
-	.frame_popup_ungrab = libdecor_plugin_cairo_frame_popup_ungrab,
-	.frame_get_border_size = libdecor_plugin_cairo_frame_get_border_size,
-};
-
-static void
-init_wl_compositor(struct libdecor_plugin_cairo *plugin_cairo,
-		   uint32_t id,
-		   uint32_t version)
-{
-	plugin_cairo->wl_compositor =
-		wl_registry_bind(plugin_cairo->wl_registry,
-				 id, &wl_compositor_interface,
-				 MIN(version, 4));
-}
-
-static void
-init_wl_subcompositor(struct libdecor_plugin_cairo *plugin_cairo,
-		      uint32_t id,
-		      uint32_t version)
-{
-	plugin_cairo->wl_subcompositor =
-		wl_registry_bind(plugin_cairo->wl_registry,
-				 id, &wl_subcompositor_interface, 1);
-}
-
-static void
-shm_format(void *user_data,
-	   struct wl_shm *wl_shm,
-	   uint32_t format)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = user_data;
-
-	if (format == WL_SHM_FORMAT_ARGB8888)
-		plugin_cairo->has_argb = true;
-}
-
-struct wl_shm_listener shm_listener = {
-	shm_format
-};
-
-static void
-shm_callback(void *user_data,
-		 struct wl_callback *callback,
-		 uint32_t time)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = user_data;
-	struct libdecor *context = plugin_cairo->context;
-
-	wl_callback_destroy(callback);
-	plugin_cairo->globals_callback_shm = NULL;
-
-	if (!plugin_cairo->has_argb) {
-		libdecor_notify_plugin_error(
-				context,
-				LIBDECOR_ERROR_COMPOSITOR_INCOMPATIBLE,
-				"Compositor is missing required shm format");
-		return;
-	}
-
-	libdecor_notify_plugin_ready(context);
-}
-
-static const struct wl_callback_listener shm_callback_listener = {
-	shm_callback
-};
-
-static void
-init_wl_shm(struct libdecor_plugin_cairo *plugin_cairo,
-	    uint32_t id,
-	    uint32_t version)
-{
-	struct libdecor *context = plugin_cairo->context;
-	struct wl_display *wl_display = libdecor_get_wl_display(context);
-
-	plugin_cairo->wl_shm =
-		wl_registry_bind(plugin_cairo->wl_registry,
-				 id, &wl_shm_interface, 1);
-	wl_shm_add_listener(plugin_cairo->wl_shm, &shm_listener, plugin_cairo);
-
-	plugin_cairo->globals_callback_shm = wl_display_sync(wl_display);
-	wl_callback_add_listener(plugin_cairo->globals_callback_shm,
-				 &shm_callback_listener,
-				 plugin_cairo);
-}
-
-static void
-cursor_surface_enter(void *data,
-		     struct wl_surface *wl_surface,
-		     struct wl_output *wl_output)
-{
-	struct seat *seat = data;
-
-	if(own_output(wl_output)) {
-		struct cursor_output *cursor_output;
-		cursor_output = zalloc(sizeof *cursor_output);
-		cursor_output->output = wl_output_get_user_data(wl_output);
-		wl_list_insert(&seat->cursor_outputs, &cursor_output->link);
-		if (update_local_cursor(seat))
-			send_cursor(seat);
-	}
-}
-
-static void
-cursor_surface_leave(void *data,
-		     struct wl_surface *wl_surface,
-		     struct wl_output *wl_output)
-{
-	struct seat *seat = data;
-
-	if(own_output(wl_output)) {
-		struct cursor_output *cursor_output, *tmp;
-		wl_list_for_each_safe(cursor_output, tmp, &seat->cursor_outputs, link) {
-			if (cursor_output->output->wl_output == wl_output) {
-				wl_list_remove(&cursor_output->link);
-				free(cursor_output);
-			}
-		}
-
-		if (update_local_cursor(seat))
-			send_cursor(seat);
-	}
-}
-
-static struct wl_surface_listener cursor_surface_listener = {
-	cursor_surface_enter,
-	cursor_surface_leave,
-};
-
-static void
-ensure_cursor_surface(struct seat *seat)
-{
-	struct wl_compositor *wl_compositor = seat->plugin_cairo->wl_compositor;
-
-	if (seat->cursor_surface)
-		return;
-
-	seat->cursor_surface = wl_compositor_create_surface(wl_compositor);
-	wl_surface_add_listener(seat->cursor_surface,
-				&cursor_surface_listener, seat);
-}
-
-static bool
-ensure_cursor_theme(struct seat *seat)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = seat->plugin_cairo;
-	int scale = 1;
-	struct wl_cursor_theme *theme;
-	struct cursor_output *cursor_output;
-
-	wl_list_for_each(cursor_output, &seat->cursor_outputs, link) {
-		scale = MAX(scale, cursor_output->output->scale);
-	}
-
-	if (seat->cursor_theme && seat->cursor_scale == scale)
-		return false;
-
-	seat->cursor_scale = scale;
-	theme = wl_cursor_theme_load(plugin_cairo->cursor_theme_name,
-				     plugin_cairo->cursor_size * scale,
-				     plugin_cairo->wl_shm);
-	if (theme == NULL)
-		return false;
-
-	if (seat->cursor_theme)
-		wl_cursor_theme_destroy(seat->cursor_theme);
-
-	seat->cursor_theme = theme;
-
-	for (unsigned int i = 0; i < ARRAY_LENGTH(cursor_names); i++) {
-		seat->cursors[i] = wl_cursor_theme_get_cursor(
-						   seat->cursor_theme,
-						   cursor_names[i]);
-	}
-
-	seat->cursor_left_ptr = wl_cursor_theme_get_cursor(seat->cursor_theme,
-							   "left_ptr");
-	seat->current_cursor = seat->cursor_left_ptr;
-
-	return true;
-}
-
-enum libdecor_resize_edge
-component_edge(const struct border_component *cmpnt,
-	       const int pointer_x,
-	       const int pointer_y,
-	       const int margin)
-{
-	const bool top = pointer_y < margin * 2;
-	const bool bottom = pointer_y > (cmpnt->server.buffer->height - margin * 2);
-	const bool left = pointer_x < margin * 2;
-	const bool right = pointer_x > (cmpnt->server.buffer->width - margin * 2);
-
-	if (top)
-		if (left)
-			return LIBDECOR_RESIZE_EDGE_TOP_LEFT;
-		else if (right)
-			return LIBDECOR_RESIZE_EDGE_TOP_RIGHT;
-		else
-			return LIBDECOR_RESIZE_EDGE_TOP;
-	else if (bottom)
-		if (left)
-			return LIBDECOR_RESIZE_EDGE_BOTTOM_LEFT;
-		else if (right)
-			return LIBDECOR_RESIZE_EDGE_BOTTOM_RIGHT;
-		else
-			return LIBDECOR_RESIZE_EDGE_BOTTOM;
-	else if (left)
-		return LIBDECOR_RESIZE_EDGE_LEFT;
-	else if (right)
-		return LIBDECOR_RESIZE_EDGE_RIGHT;
-	else
-		return LIBDECOR_RESIZE_EDGE_NONE;
-}
-
-static bool
-update_local_cursor(struct seat *seat)
-{
-	if (!seat->pointer_focus) {
-		seat->current_cursor = seat->cursor_left_ptr;
-		return false;
-	}
-
-	if (!own_surface(seat->pointer_focus)) {
-		if (seat->plugin_cairo->handle_cursor) {
-			seat->current_cursor = seat->cursor_left_ptr;
-			return true;
-		} else {
-			return false;
-		}
-	}
-
-	struct libdecor_frame_cairo *frame_cairo =
-			wl_surface_get_user_data(seat->pointer_focus);
-	struct wl_cursor *wl_cursor = NULL;
-
-	if (!frame_cairo || !frame_cairo->active) {
-		seat->current_cursor = seat->cursor_left_ptr;
-		return false;
-	}
-
-	bool theme_updated = ensure_cursor_theme(seat);
-
-	if (frame_cairo->active->type == SHADOW &&
-	    is_border_surfaces_showing(frame_cairo) &&
-	    resizable(frame_cairo)) {
-		enum libdecor_resize_edge edge;
-		edge = component_edge(frame_cairo->active,
-				      seat->pointer_x,
-				      seat->pointer_y, SHADOW_MARGIN);
-
-		if (edge != LIBDECOR_RESIZE_EDGE_NONE)
-			wl_cursor = seat->cursors[edge - 1];
-	} else {
-		wl_cursor = seat->cursor_left_ptr;
-	}
-
-	if (seat->current_cursor != wl_cursor) {
-		seat->current_cursor = wl_cursor;
-		return true;
-	}
-
-	return theme_updated;
-}
-
-static void
-send_cursor(struct seat *seat)
-{
-	struct wl_cursor_image *image;
-	struct wl_buffer *buffer;
-
-	if (seat->pointer_focus == NULL || seat->current_cursor == NULL)
-		return;
-
-	image = seat->current_cursor->images[0];
-	buffer = wl_cursor_image_get_buffer(image);
-	wl_surface_attach(seat->cursor_surface, buffer, 0, 0);
-	wl_surface_set_buffer_scale(seat->cursor_surface, seat->cursor_scale);
-	wl_surface_damage_buffer(seat->cursor_surface, 0, 0,
-				 image->width * seat->cursor_scale,
-				 image->height * seat->cursor_scale);
-	wl_surface_commit(seat->cursor_surface);
-	wl_pointer_set_cursor(seat->wl_pointer, seat->serial,
-			      seat->cursor_surface,
-			      image->hotspot_x / seat->cursor_scale,
-			      image->hotspot_y / seat->cursor_scale);
-}
-
-static void
-sync_active_component(struct libdecor_frame_cairo *frame_cairo,
-		      struct seat *seat)
-{
-	struct border_component *old_active;
-
-	if (!seat->pointer_focus)
-		return;
-
-	old_active = frame_cairo->active;
-	update_component_focus(frame_cairo, seat->pointer_focus, seat);
-	if (old_active != frame_cairo->active) {
-		draw_decoration(frame_cairo);
-		libdecor_frame_toplevel_commit(&frame_cairo->frame);
-	}
-
-	if (update_local_cursor(seat))
-		send_cursor(seat);
-}
-
-static void
-synthesize_pointer_enter(struct seat *seat)
-{
-	struct wl_surface *surface;
-	struct libdecor_frame_cairo *frame_cairo;
-
-	surface = seat->pointer_focus;
-	if (!surface || !own_surface(surface))
-		return;
-
-	frame_cairo = wl_surface_get_user_data(surface);
-	if (!frame_cairo)
-		return;
-
-	update_component_focus(frame_cairo, seat->pointer_focus, seat);
-	frame_cairo->grab = NULL;
-
-	/* update decorations */
-	if (frame_cairo->active) {
-		draw_decoration(frame_cairo);
-		libdecor_frame_toplevel_commit(&frame_cairo->frame);
-	}
-
-	update_local_cursor(seat);
-	send_cursor(seat);
-}
-
-static void
-synthesize_pointer_leave(struct seat *seat)
-{
-	struct wl_surface *surface;
-	struct libdecor_frame_cairo *frame_cairo;
-
-	surface = seat->pointer_focus;
-	if (!surface || !own_surface(surface))
-		return;
-
-	frame_cairo = wl_surface_get_user_data(surface);
-	if (!frame_cairo)
-		return;
-
-	if (!frame_cairo->active)
-		return;
-
-	frame_cairo->active = NULL;
-	draw_decoration(frame_cairo);
-	libdecor_frame_toplevel_commit(&frame_cairo->frame);
-	update_local_cursor(seat);
-}
-
-static void
-pointer_enter(void *data,
-	      struct wl_pointer *wl_pointer,
-	      uint32_t serial,
-	      struct wl_surface *surface,
-	      wl_fixed_t surface_x,
-	      wl_fixed_t surface_y)
-{
-	struct seat *seat = data;
-	struct libdecor_frame_cairo *frame_cairo = NULL;
-
-	if (!surface)
-		return;
-
-	if (!own_surface(surface)) {
-		struct seat *seat = wl_pointer_get_user_data(wl_pointer);
-		struct libdecor_plugin_cairo *plugin_cairo = seat->plugin_cairo;
-
-		if (!plugin_cairo->handle_cursor)
-			return;
-	} else {
-		frame_cairo = wl_surface_get_user_data(surface);
-	}
-
-	ensure_cursor_surface(seat);
-
-	seat->pointer_x = wl_fixed_to_int(surface_x);
-	seat->pointer_y = wl_fixed_to_int(surface_y);
-	seat->serial = serial;
-	seat->pointer_focus = surface;
-	seat->pointer_focus_frame = frame_cairo;
-
-	if (seat->grabbed)
-		return;
-
-	synthesize_pointer_enter(seat);
-}
-
-static void
-pointer_leave(void *data,
-	      struct wl_pointer *wl_pointer,
-	      uint32_t serial,
-	      struct wl_surface *surface)
-{
-	struct seat *seat = data;
-
-	if (!surface)
-		return;
-
-	if (!own_surface(surface))
-		return;
-
-	synthesize_pointer_leave(seat);
-	seat->pointer_focus = NULL;
-	seat->pointer_focus_frame = NULL;
-}
-
-static void
-pointer_motion(void *data,
-	       struct wl_pointer *wl_pointer,
-	       uint32_t time,
-	       wl_fixed_t surface_x,
-	       wl_fixed_t surface_y)
-{
-	struct seat *seat = data;
-
-	seat->pointer_x = wl_fixed_to_int(surface_x);
-	seat->pointer_y = wl_fixed_to_int(surface_y);
-
-	if (seat->grabbed)
-		return;
-
-	if (!seat->pointer_focus_frame)
-		return;
-
-	sync_active_component(seat->pointer_focus_frame, seat);
-}
-
-static void
-pointer_button(void *data,
-	       struct wl_pointer *wl_pointer,
-	       uint32_t serial,
-	       uint32_t time,
-	       uint32_t button,
-	       uint32_t state)
-{
-	struct seat *seat = data;
-	struct libdecor_frame_cairo *frame_cairo;
-
-	if (!seat->pointer_focus || !own_surface(seat->pointer_focus))
-		return;
-
-	frame_cairo = wl_surface_get_user_data(seat->pointer_focus);
-	if (!frame_cairo)
-		return;
-
-	if (seat->grabbed) {
-		libdecor_frame_dismiss_popup(&frame_cairo->frame, seat->name);
-		return;
-	}
-
-	if (!frame_cairo->active)
-		return;
-
-	if (button == BTN_LEFT) {
-		if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
-			enum libdecor_resize_edge edge =
-					LIBDECOR_RESIZE_EDGE_NONE;
-
-			frame_cairo->grab = NULL;
-
-			switch (frame_cairo->active->type) {
-			case SHADOW:
-				edge = component_edge(frame_cairo->active,
-						      seat->pointer_x,
-						      seat->pointer_y,
-						      SHADOW_MARGIN);
-				break;
-			case TITLE:
-				if (time-seat->pointer_button_time_stamp <
-				    DOUBLE_CLICK_TIME_MS) {
-					toggle_maximized(&frame_cairo->frame);
-				}
-				else if (moveable(frame_cairo)) {
-					seat->pointer_button_time_stamp = time;
-					libdecor_frame_move(&frame_cairo->frame,
-							    seat->wl_seat,
-							    serial);
-				}
-				break;
-			case BUTTON_MIN:
-			case BUTTON_MAX:
-			case BUTTON_CLOSE:
-				frame_cairo->grab = frame_cairo->active;
-				break;
-			default:
-				break;
-			}
-
-			if (edge != LIBDECOR_RESIZE_EDGE_NONE &&
-			    resizable(frame_cairo)) {
-				libdecor_frame_resize(
-					&frame_cairo->frame,
-					seat->wl_seat,
-					serial,
-					edge);
-			}
-		}
-		else if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
-			 frame_cairo->grab) {
-			libdecor_frame_ref(&frame_cairo->frame);
-			if (frame_cairo->grab == frame_cairo->focus) {
-				switch (frame_cairo->active->type) {
-				case BUTTON_MIN:
-					if (minimizable(frame_cairo))
-						libdecor_frame_set_minimized(
-							&frame_cairo->frame);
-					break;
-				case BUTTON_MAX:
-					toggle_maximized(&frame_cairo->frame);
-					break;
-				case BUTTON_CLOSE:
-					if (closeable(frame_cairo))
-						libdecor_frame_close(&frame_cairo->frame);
-					break;
-				default:
-					break;
-				}
-			}
-			frame_cairo->grab = NULL;
-			sync_active_component(frame_cairo, seat);
-			libdecor_frame_unref(&frame_cairo->frame);
-		}
-	}
-	else if (button == BTN_RIGHT &&
-		 state == WL_POINTER_BUTTON_STATE_PRESSED &&
-		 seat->pointer_focus == frame_cairo->title_bar.title.server.wl_surface) {
-			libdecor_frame_show_window_menu(&frame_cairo->frame,
-							seat->wl_seat,
-							serial,
-							seat->pointer_x,
-							seat->pointer_y - TITLE_HEIGHT);
-	}
-}
-
-static void
-pointer_axis(void *data,
-	     struct wl_pointer *wl_pointer,
-	     uint32_t time,
-	     uint32_t axis,
-	     wl_fixed_t value)
-{
-}
-
-static struct wl_pointer_listener pointer_listener = {
-	pointer_enter,
-	pointer_leave,
-	pointer_motion,
-	pointer_button,
-	pointer_axis
-};
-
-static void
-seat_capabilities(void *data,
-		  struct wl_seat *wl_seat,
-		  uint32_t capabilities)
-{
-	struct seat *seat = data;
-
-	if ((capabilities & WL_SEAT_CAPABILITY_POINTER) &&
-	    !seat->wl_pointer) {
-		seat->wl_pointer = wl_seat_get_pointer(wl_seat);
-		wl_pointer_add_listener(seat->wl_pointer,
-					&pointer_listener, seat);
-	} else if (!(capabilities & WL_SEAT_CAPABILITY_POINTER) &&
-		   seat->wl_pointer) {
-		wl_pointer_release(seat->wl_pointer);
-		seat->wl_pointer = NULL;
-	}
-}
-
-static void
-seat_name(void *data,
-	  struct wl_seat *wl_seat,
-	  const char *name)
-{
-	struct seat *seat = data;
-
-	seat->name = strdup(name);
-}
-
-static struct wl_seat_listener seat_listener = {
-	seat_capabilities,
-	seat_name
-};
-
-static void
-init_wl_seat(struct libdecor_plugin_cairo *plugin_cairo,
-	     uint32_t id,
-	     uint32_t version)
-{
-	struct seat *seat;
-
-	if (version < 3) {
-		libdecor_notify_plugin_error(
-				plugin_cairo->context,
-				LIBDECOR_ERROR_COMPOSITOR_INCOMPATIBLE,
-				"%s version 3 required but only version %i is available\n",
-				wl_seat_interface.name, version);
-	}
-
-	seat = zalloc(sizeof *seat);
-	seat->cursor_scale = 1;
-	seat->plugin_cairo = plugin_cairo;
-	wl_list_init(&seat->cursor_outputs);
-	wl_list_insert(&plugin_cairo->seat_list, &seat->link);
-	seat->wl_seat =
-		wl_registry_bind(plugin_cairo->wl_registry,
-				 id, &wl_seat_interface, 3);
-	wl_seat_add_listener(seat->wl_seat, &seat_listener, seat);
-}
-
-static void
-output_geometry(void *data,
-		struct wl_output *wl_output,
-		int32_t x,
-		int32_t y,
-		int32_t physical_width,
-		int32_t physical_height,
-		int32_t subpixel,
-		const char *make,
-		const char *model,
-		int32_t transform)
-{
-}
-
-static void
-output_mode(void *data,
-	    struct wl_output *wl_output,
-	    uint32_t flags,
-	    int32_t width,
-	    int32_t height,
-	    int32_t refresh)
-{
-}
-
-static void
-output_done(void *data,
-	    struct wl_output *wl_output)
-{
-	struct output *output = data;
-	struct libdecor_frame_cairo *frame_cairo;
-	struct seat *seat;
-
-	wl_list_for_each(frame_cairo,
-			&output->plugin_cairo->visible_frame_list, link) {
-		bool updated = false;
-		updated |= redraw_scale(frame_cairo, &frame_cairo->shadow);
-		updated |= redraw_scale(frame_cairo, &frame_cairo->title_bar.title);
-		if (updated)
-			libdecor_frame_toplevel_commit(&frame_cairo->frame);
-	}
-	wl_list_for_each(seat, &output->plugin_cairo->seat_list, link) {
-		if (update_local_cursor(seat))
-			send_cursor(seat);
-	}
-}
-
-static void
-output_scale(void *data,
-	     struct wl_output *wl_output,
-	     int32_t factor)
-{
-	struct output *output = data;
-
-	output->scale = factor;
-}
-
-static struct wl_output_listener output_listener = {
-	output_geometry,
-	output_mode,
-	output_done,
-	output_scale
-};
-
-static void
-init_wl_output(struct libdecor_plugin_cairo *plugin_cairo,
-	       uint32_t id,
-	       uint32_t version)
-{
-	struct output *output;
-
-	if (version < 2) {
-		libdecor_notify_plugin_error(
-				plugin_cairo->context,
-				LIBDECOR_ERROR_COMPOSITOR_INCOMPATIBLE,
-				"%s version 2 required but only version %i is available\n",
-				wl_output_interface.name, version);
-	}
-
-	output = zalloc(sizeof *output);
-	output->plugin_cairo = plugin_cairo;
-	wl_list_insert(&plugin_cairo->output_list, &output->link);
-	output->id = id;
-	output->wl_output =
-		wl_registry_bind(plugin_cairo->wl_registry,
-				 id, &wl_output_interface,
-				 MIN (version, 3));
-	wl_proxy_set_tag((struct wl_proxy *) output->wl_output,
-			 &libdecor_cairo_proxy_tag);
-	wl_output_add_listener(output->wl_output, &output_listener, output);
-}
-
-static void
-registry_handle_global(void *user_data,
-		       struct wl_registry *wl_registry,
-		       uint32_t id,
-		       const char *interface,
-		       uint32_t version)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = user_data;
-
-	if (strcmp(interface, "wl_compositor") == 0)
-		init_wl_compositor(plugin_cairo, id, version);
-	else if (strcmp(interface, "wl_subcompositor") == 0)
-		init_wl_subcompositor(plugin_cairo, id, version);
-	else if (strcmp(interface, "wl_shm") == 0)
-		init_wl_shm(plugin_cairo, id, version);
-	else if (strcmp(interface, "wl_seat") == 0)
-		init_wl_seat(plugin_cairo, id, version);
-	else if (strcmp(interface, "wl_output") == 0)
-		init_wl_output(plugin_cairo, id, version);
-}
-
-static void
-remove_surface_outputs(struct border_component *cmpnt, struct output *output)
-{
-	struct surface_output *surface_output;
-	wl_list_for_each(surface_output, &cmpnt->server.output_list, link) {
-		if (surface_output->output == output) {
-			wl_list_remove(&surface_output->link);
-			free(surface_output);
-			break;
-		}
-	}
-}
-
-static void
-output_removed(struct libdecor_plugin_cairo *plugin_cairo,
-	       struct output *output)
-{
-	struct libdecor_frame_cairo *frame_cairo;
-	struct seat *seat;
-
-	wl_list_for_each(frame_cairo, &plugin_cairo->visible_frame_list, link) {
-		remove_surface_outputs(&frame_cairo->shadow, output);
-		remove_surface_outputs(&frame_cairo->title_bar.title, output);
-		remove_surface_outputs(&frame_cairo->title_bar.min, output);
-		remove_surface_outputs(&frame_cairo->title_bar.max, output);
-		remove_surface_outputs(&frame_cairo->title_bar.close, output);
-	}
-	wl_list_for_each(seat, &plugin_cairo->seat_list, link) {
-		struct cursor_output *cursor_output, *tmp;
-		wl_list_for_each_safe(cursor_output, tmp, &seat->cursor_outputs, link) {
-			if (cursor_output->output == output) {
-				wl_list_remove(&cursor_output->link);
-				free(cursor_output);
-			}
-		}
-	}
-
-	wl_list_remove(&output->link);
-	wl_output_destroy(output->wl_output);
-	free(output);
-}
-
-static void
-registry_handle_global_remove(void *user_data,
-			      struct wl_registry *wl_registry,
-			      uint32_t name)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = user_data;
-	struct output *output;
-
-	wl_list_for_each(output, &plugin_cairo->output_list, link) {
-		if (output->id == name) {
-			output_removed(plugin_cairo, output);
-			break;
-		}
-	}
-}
-
-static const struct wl_registry_listener registry_listener = {
-	registry_handle_global,
-	registry_handle_global_remove
-};
-
-static bool
-has_required_globals(struct libdecor_plugin_cairo *plugin_cairo)
-{
-	if (!plugin_cairo->wl_compositor)
-		return false;
-	if (!plugin_cairo->wl_subcompositor)
-		return false;
-	if (!plugin_cairo->wl_shm)
-		return false;
-
-	return true;
-}
-
-static void
-globals_callback(void *user_data,
-		 struct wl_callback *callback,
-		 uint32_t time)
-{
-	struct libdecor_plugin_cairo *plugin_cairo = user_data;
-
-	wl_callback_destroy(callback);
-	plugin_cairo->globals_callback = NULL;
-}
-
-static const struct wl_callback_listener globals_callback_listener = {
-	globals_callback
-};
-
-static struct libdecor_plugin *
-libdecor_plugin_new(struct libdecor *context)
-{
-	struct libdecor_plugin_cairo *plugin_cairo;
-	struct wl_display *wl_display;
-
-	plugin_cairo = zalloc(sizeof *plugin_cairo);
-	libdecor_plugin_init(&plugin_cairo->plugin,
-			     context,
-			     &cairo_plugin_iface);
-	plugin_cairo->context = context;
-
-	wl_list_init(&plugin_cairo->visible_frame_list);
-	wl_list_init(&plugin_cairo->seat_list);
-	wl_list_init(&plugin_cairo->output_list);
-
-	/* fetch cursor theme and size*/
-	if (!libdecor_get_cursor_settings(&plugin_cairo->cursor_theme_name,
-					  &plugin_cairo->cursor_size)) {
-		plugin_cairo->cursor_theme_name = NULL;
-		plugin_cairo->cursor_size = 24;
-	}
-
-	/* define a sens-serif bold font at symbol size */
-	plugin_cairo->font = pango_font_description_new();
-	pango_font_description_set_family(plugin_cairo->font, "sans");
-	pango_font_description_set_weight(plugin_cairo->font, PANGO_WEIGHT_BOLD);
-	pango_font_description_set_absolute_size(plugin_cairo->font, SYM_DIM * PANGO_SCALE);
-
-	wl_display = libdecor_get_wl_display(context);
-	plugin_cairo->wl_registry = wl_display_get_registry(wl_display);
-	wl_registry_add_listener(plugin_cairo->wl_registry,
-				 &registry_listener,
-				 plugin_cairo);
-
-	plugin_cairo->globals_callback = wl_display_sync(wl_display);
-	wl_callback_add_listener(plugin_cairo->globals_callback,
-				 &globals_callback_listener,
-				 plugin_cairo);
-	wl_display_roundtrip(wl_display);
-
-	if (!has_required_globals(plugin_cairo)) {
-		fprintf(stderr, "libdecor-cairo-WARNING: Could not get required globals\n");
-		libdecor_plugin_cairo_destroy(&plugin_cairo->plugin);
-		return NULL;
-	}
-
-	return &plugin_cairo->plugin;
-}
-
-static struct libdecor_plugin_priority priorities[] = {
-	{ NULL, LIBDECOR_PLUGIN_PRIORITY_MEDIUM }
-};
-
-LIBDECOR_EXPORT const struct libdecor_plugin_description
-libdecor_plugin_description = {
-	.api_version = LIBDECOR_PLUGIN_API_VERSION,
-	.capabilities = LIBDECOR_PLUGIN_CAPABILITY_BASE,
-	.description = "libdecor plugin using Cairo",
-	.priorities = priorities,
-	.constructor = libdecor_plugin_new,
-};