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Learning_GTK4_tree/gdk/wayland/gdksurface-wayland.c

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2023-12-12 11:36:42 +01:00
/*
* Copyright © 2010 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gdksurface-wayland.h"
#include "gdkdeviceprivate.h"
#include "gdkdisplay-wayland.h"
#include "gdkdragsurfaceprivate.h"
#include "gdkeventsprivate.h"
#include "gdkframeclockidleprivate.h"
#include "gdkglcontext-wayland.h"
#include "gdkmonitor-wayland.h"
#include "gdkpopupprivate.h"
#include "gdkprivate-wayland.h"
#include "gdkrectangleprivate.h"
#include "gdkseat-wayland.h"
#include "gdksurfaceprivate.h"
#include "gdktoplevelprivate.h"
#include "gdkdevice-wayland-private.h"
#include "gdkdmabuftextureprivate.h"
#include "gdksubsurfaceprivate.h"
#include "gdksubsurface-wayland-private.h"
#include <wayland/xdg-shell-unstable-v6-client-protocol.h>
#include <wayland/xdg-foreign-unstable-v2-client-protocol.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <unistd.h>
#include "gdksurface-wayland-private.h"
#include "gdktoplevel-wayland-private.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
/**
* GdkWaylandSurface:
*
* The Wayland implementation of `GdkSurface`.
*
* Beyond the [class@Gdk.Surface] API, the Wayland implementation offers
* access to the Wayland `wl_surface` object with
* [method@GdkWayland.WaylandSurface.get_wl_surface].
*/
G_DEFINE_TYPE (GdkWaylandSurface, gdk_wayland_surface, GDK_TYPE_SURFACE)
static void gdk_wayland_surface_configure (GdkSurface *surface);
/* {{{ Utilities */
static void
fill_presentation_time_from_frame_time (GdkFrameTimings *timings,
guint32 frame_time)
{
/* The timestamp in a wayland frame is a msec time value that in some
* way reflects the time at which the server started drawing the frame.
* This is not useful from our perspective.
*
* However, for the DRM backend of Weston, on reasonably recent
* Linux, we know that the time is the
* clock_gettime (CLOCK_MONOTONIC) value at the vblank, and that
* backend starts drawing immediately after receiving the vblank
* notification. If we detect this, and make the assumption that the
* compositor will finish drawing before the next vblank, we can
* then determine the presentation time as the frame time we
* received plus one refresh interval.
*
* If a backend is using clock_gettime(CLOCK_MONOTONIC), but not
* picking values right at the vblank, then the presentation times
* we compute won't be accurate, but not really worse than then
* the alternative of not providing presentation times at all.
*
* The complexity here is dealing with the fact that we receive
* only the low 32 bits of the CLOCK_MONOTONIC value in milliseconds.
*/
gint64 now_monotonic = g_get_monotonic_time ();
gint64 now_monotonic_msec = now_monotonic / 1000;
uint32_t now_monotonic_low = (uint32_t)now_monotonic_msec;
if (frame_time - now_monotonic_low < 1000 ||
frame_time - now_monotonic_low > (uint32_t)-1000)
{
/* Timestamp we received is within one second of the current time.
*/
gint64 last_frame_time = now_monotonic + (gint64)1000 * (gint32)(frame_time - now_monotonic_low);
if ((gint32)now_monotonic_low < 0 && (gint32)frame_time > 0)
last_frame_time += (gint64)1000 * G_GINT64_CONSTANT(0x100000000);
else if ((gint32)now_monotonic_low > 0 && (gint32)frame_time < 0)
last_frame_time -= (gint64)1000 * G_GINT64_CONSTANT(0x100000000);
timings->presentation_time = last_frame_time + timings->refresh_interval;
}
}
static gboolean
is_realized_shell_surface (GdkWaylandSurface *impl)
{
return (impl->display_server.xdg_surface ||
impl->display_server.zxdg_surface_v6);
}
void
gdk_wayland_surface_get_window_geometry (GdkSurface *surface,
GdkRectangle *geometry)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
*geometry = (GdkRectangle) {
.x = impl->shadow_left,
.y = impl->shadow_top,
.width = surface->width - (impl->shadow_left + impl->shadow_right),
.height = surface->height - (impl->shadow_top + impl->shadow_bottom)
};
}
static struct wl_region *
wl_region_from_cairo_region (GdkWaylandDisplay *display,
cairo_region_t *region)
{
struct wl_region *wl_region;
int i, n_rects;
wl_region = wl_compositor_create_region (display->compositor);
if (wl_region == NULL)
return NULL;
n_rects = cairo_region_num_rectangles (region);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
wl_region_add (wl_region, rect.x, rect.y, rect.width, rect.height);
}
return wl_region;
}
/* }}} */
/* {{{ Surface implementation */
static void
gdk_wayland_surface_init (GdkWaylandSurface *impl)
{
impl->scale = GDK_FRACTIONAL_SCALE_INIT_INT (1);
impl->viewport_dirty = TRUE;
}
void
gdk_wayland_surface_freeze_state (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
impl->state_freeze_count++;
}
void
gdk_wayland_surface_thaw_state (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
g_assert (impl->state_freeze_count > 0);
impl->state_freeze_count--;
if (impl->state_freeze_count > 0)
return;
if (impl->pending.is_dirty)
gdk_wayland_surface_configure (surface);
}
static inline void
get_egl_window_size (GdkSurface *surface,
int *width,
int *height)
{
GdkDisplay *display = gdk_surface_get_display (surface);
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (GDK_DISPLAY_DEBUG_CHECK (display, GL_FRACTIONAL))
{
GDK_DISPLAY_DEBUG (display, OPENGL, "Using fractional scale %g for EGL window", gdk_fractional_scale_to_double (&impl->scale));
*width = gdk_fractional_scale_scale (&impl->scale, surface->width),
*height = gdk_fractional_scale_scale (&impl->scale, surface->height);
}
else
{
GDK_DISPLAY_DEBUG (display, OPENGL, "Using integer scale %d for EGL window", gdk_fractional_scale_to_int (&impl->scale));
*width = surface->width * gdk_fractional_scale_to_int (&impl->scale);
*height = surface->height * gdk_fractional_scale_to_int (&impl->scale);
}
}
void
gdk_wayland_surface_update_size (GdkSurface *surface,
int32_t width,
int32_t height,
const GdkFractionalScale *scale)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
gboolean width_changed, height_changed, scale_changed, scale_factor_changed;
width_changed = surface->width != width;
height_changed = surface->height != height;
scale_changed = !gdk_fractional_scale_equal (&impl->scale, scale);
scale_factor_changed = gdk_fractional_scale_to_int (&impl->scale) != gdk_fractional_scale_to_int (scale);
if (!width_changed && !height_changed && !scale_changed)
return;
surface->width = width;
surface->height = height;
if (scale_changed)
{
impl->scale = *scale;
impl->buffer_scale_dirty = TRUE;
impl->viewport_dirty = TRUE;
}
if (width_changed || height_changed)
impl->viewport_dirty = TRUE;
if (impl->display_server.egl_window)
{
int w, h;
get_egl_window_size (surface, &w, &h);
wl_egl_window_resize (impl->display_server.egl_window, w, h, 0, 0);
}
gdk_surface_invalidate_rect (surface, NULL);
if (width_changed)
g_object_notify (G_OBJECT (surface), "width");
if (height_changed)
g_object_notify (G_OBJECT (surface), "height");
if (scale_changed)
g_object_notify (G_OBJECT (surface), "scale");
if (scale_factor_changed)
g_object_notify (G_OBJECT (surface), "scale-factor");
_gdk_surface_update_size (surface);
}
void
gdk_wayland_surface_frame_callback (GdkSurface *surface,
uint32_t time)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
GdkWaylandDisplay *display_wayland =
GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
GdkFrameClock *clock = gdk_surface_get_frame_clock (surface);
GdkFrameTimings *timings;
gdk_profiler_add_mark (GDK_PROFILER_CURRENT_TIME, 0, "wayland", "frame event");
GDK_DISPLAY_DEBUG (GDK_DISPLAY (display_wayland), EVENTS, "frame %p", surface);
g_clear_pointer (&impl->frame_callback, wl_callback_destroy);
for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
{
GdkSubsurface *subsurface = gdk_surface_get_subsurface (surface, i);
gdk_wayland_subsurface_clear_frame_callback (subsurface);
}
GDK_WAYLAND_SURFACE_GET_CLASS (impl)->handle_frame (impl);
if (impl->awaiting_frame_frozen)
{
impl->awaiting_frame_frozen = FALSE;
gdk_surface_thaw_updates (surface);
}
timings = gdk_frame_clock_get_timings (clock, impl->pending_frame_counter);
impl->pending_frame_counter = 0;
if (timings == NULL)
return;
timings->refresh_interval = 16667; /* default to 1/60th of a second */
if (impl->display_server.outputs)
{
/* We pick a random output out of the outputs that the surface touches
* The rate here is in milli-hertz */
int refresh_rate =
gdk_wayland_display_get_output_refresh_rate (display_wayland,
impl->display_server.outputs->data);
if (refresh_rate != 0)
timings->refresh_interval = G_GINT64_CONSTANT(1000000000) / refresh_rate;
}
fill_presentation_time_from_frame_time (timings, time);
timings->complete = TRUE;
if ((_gdk_debug_flags & GDK_DEBUG_FRAMES) != 0)
_gdk_frame_clock_debug_print_timings (clock, timings);
if (GDK_PROFILER_IS_RUNNING)
_gdk_frame_clock_add_timings_to_profiler (clock, timings);
}
static void
frame_callback (void *data,
struct wl_callback *callback,
uint32_t time)
{
GdkSurface *surface = data;
g_assert (GDK_WAYLAND_SURFACE (surface)->frame_callback == callback);
g_assert (!GDK_SURFACE_DESTROYED (surface));
gdk_wayland_surface_frame_callback (surface, time);
}
static const struct wl_callback_listener frame_listener = {
frame_callback
};
static void
on_frame_clock_before_paint (GdkFrameClock *clock,
GdkSurface *surface)
{
GdkFrameTimings *timings = gdk_frame_clock_get_current_timings (clock);
gint64 presentation_time;
gint64 refresh_interval;
if (surface->update_freeze_count > 0)
return;
gdk_frame_clock_get_refresh_info (clock,
timings->frame_time,
&refresh_interval, &presentation_time);
if (presentation_time != 0)
{
/* Assume the algorithm used by the DRM backend of Weston - it
* starts drawing at the next vblank after receiving the commit
* for this frame, and presentation occurs at the vblank
* after that.
*/
timings->predicted_presentation_time = presentation_time + refresh_interval;
}
else
{
/* As above, but we don't actually know the phase of the vblank,
* so just assume that we're half way through a refresh cycle.
*/
timings->predicted_presentation_time = timings->frame_time + refresh_interval / 2 + refresh_interval;
}
gdk_surface_apply_state_change (surface);
}
static void
gdk_wayland_surface_request_layout (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
impl->next_layout.surface_geometry_dirty = TRUE;
}
void
gdk_wayland_surface_request_frame (GdkSurface *surface)
{
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (surface);
GdkFrameClock *clock;
if (self->frame_callback != NULL)
return;
clock = gdk_surface_get_frame_clock (surface);
self->frame_callback = wl_surface_frame (self->display_server.wl_surface);
wl_proxy_set_queue ((struct wl_proxy *) self->frame_callback, NULL);
wl_callback_add_listener (self->frame_callback, &frame_listener, surface);
for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
{
GdkSubsurface *subsurface = gdk_surface_get_subsurface (surface, i);
gdk_wayland_subsurface_request_frame (subsurface);
}
self->pending_frame_counter = gdk_frame_clock_get_frame_counter (clock);
}
gboolean
gdk_wayland_surface_has_surface (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
return !!impl->display_server.wl_surface;
}
void
gdk_wayland_surface_commit (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
wl_surface_commit (impl->display_server.wl_surface);
}
void
gdk_wayland_surface_notify_committed (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
impl->has_uncommitted_ack_configure = FALSE;
impl->has_pending_subsurface_commits = FALSE;
}
static void
on_frame_clock_after_paint (GdkFrameClock *clock,
GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (surface->update_freeze_count == 0 &&
(impl->has_uncommitted_ack_configure ||
impl->has_pending_subsurface_commits))
{
gdk_wayland_surface_commit (surface);
gdk_wayland_surface_notify_committed (surface);
}
if (impl->frame_callback &&
impl->pending_frame_counter == gdk_frame_clock_get_frame_counter (clock))
{
g_assert (!impl->awaiting_frame_frozen);
impl->awaiting_frame_frozen = TRUE;
gdk_surface_freeze_updates (surface);
}
}
void
gdk_wayland_surface_update_scale (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
guint32 scale;
GSList *l;
/* We can't set the scale on this surface */
if (!impl->display_server.wl_surface ||
wl_surface_get_version (impl->display_server.wl_surface) < WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
return;
/* scale is tracked by the fractional scale extension */
if (impl->display_server.fractional_scale)
return;
if (!impl->display_server.outputs)
return;
scale = 1;
for (l = impl->display_server.outputs; l != NULL; l = l->next)
{
struct wl_output *output = l->data;
uint32_t output_scale;
output_scale = gdk_wayland_display_get_output_scale (display_wayland,
output);
scale = MAX (scale, output_scale);
}
/* Notify app that scale changed */
gdk_wayland_surface_update_size (surface,
surface->width, surface->height,
&GDK_FRACTIONAL_SCALE_INIT_INT (scale));
}
void
gdk_wayland_surface_attach_image (GdkSurface *surface,
cairo_surface_t *cairo_surface,
const cairo_region_t *damage)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
cairo_rectangle_int_t rect;
uint32_t wl_surface_version;
int i, n;
if (GDK_SURFACE_DESTROYED (surface))
return;
g_assert (_gdk_wayland_is_shm_surface (cairo_surface));
wl_surface_version = wl_surface_get_version (impl->display_server.wl_surface);
/* Attach this new buffer to the surface */
wl_surface_attach (impl->display_server.wl_surface,
_gdk_wayland_shm_surface_get_wl_buffer (cairo_surface),
0, 0);
if ((impl->pending_buffer_offset_x || impl->pending_buffer_offset_y) &&
wl_surface_version >= WL_SURFACE_OFFSET_SINCE_VERSION)
wl_surface_offset (impl->display_server.wl_surface,
impl->pending_buffer_offset_x,
impl->pending_buffer_offset_y);
impl->pending_buffer_offset_x = 0;
impl->pending_buffer_offset_y = 0;
n = cairo_region_num_rectangles (damage);
for (i = 0; i < n; i++)
{
cairo_region_get_rectangle (damage, i, &rect);
if (wl_surface_version >= WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
{
float scale = gdk_surface_get_scale (surface);
gdk_rectangle_transform_affine (&rect, scale, scale, 0, 0, &rect);
wl_surface_damage_buffer (impl->display_server.wl_surface, rect.x, rect.y, rect.width, rect.height);
}
else
{
wl_surface_damage (impl->display_server.wl_surface, rect.x, rect.y, rect.width, rect.height);
}
}
}
static gboolean
gdk_wayland_surface_beep (GdkSurface *surface)
{
gdk_wayland_display_system_bell (gdk_surface_get_display (surface), surface);
return TRUE;
}
static void
gdk_wayland_surface_dispose (GObject *object)
{
GdkSurface *surface = GDK_SURFACE (object);
GdkWaylandSurface *impl;
g_return_if_fail (GDK_IS_WAYLAND_SURFACE (surface));
impl = GDK_WAYLAND_SURFACE (surface);
if (impl->event_queue)
{
GdkWaylandDisplay *display_wayland =
GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
display_wayland->event_queues =
g_list_remove (display_wayland->event_queues, impl->event_queue);
g_clear_pointer (&impl->event_queue, wl_event_queue_destroy);
}
G_OBJECT_CLASS (gdk_wayland_surface_parent_class)->dispose (object);
}
static void
gdk_wayland_surface_finalize (GObject *object)
{
GdkWaylandSurface *impl;
g_return_if_fail (GDK_IS_WAYLAND_SURFACE (object));
impl = GDK_WAYLAND_SURFACE (object);
g_clear_pointer (&impl->opaque_region, cairo_region_destroy);
g_clear_pointer (&impl->input_region, cairo_region_destroy);
G_OBJECT_CLASS (gdk_wayland_surface_parent_class)->finalize (object);
}
static void
gdk_wayland_surface_sync_shadow (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
GdkRectangle geometry;
if (!is_realized_shell_surface (impl))
return;
gdk_wayland_surface_get_window_geometry (surface, &geometry);
if (GDK_IS_WAYLAND_TOPLEVEL (impl))
{
GdkWaylandToplevel *toplevel = GDK_WAYLAND_TOPLEVEL (impl);
gdk_wayland_toplevel_set_geometry_hints (toplevel, NULL, 0);
}
if (gdk_rectangle_equal (&geometry, &impl->last_sent_window_geometry))
return;
switch (display_wayland->shell_variant)
{
case GDK_WAYLAND_SHELL_VARIANT_XDG_SHELL:
xdg_surface_set_window_geometry (impl->display_server.xdg_surface,
geometry.x,
geometry.y,
geometry.width,
geometry.height);
break;
case GDK_WAYLAND_SHELL_VARIANT_ZXDG_SHELL_V6:
zxdg_surface_v6_set_window_geometry (impl->display_server.zxdg_surface_v6,
geometry.x,
geometry.y,
geometry.width,
geometry.height);
break;
default:
g_assert_not_reached ();
}
impl->last_sent_window_geometry = geometry;
}
static void
gdk_wayland_surface_sync_opaque_region (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
struct wl_region *wl_region = NULL;
if (!impl->display_server.wl_surface)
return;
if (!impl->opaque_region_dirty)
return;
if (impl->opaque_region != NULL)
{
if (gdk_surface_get_n_subsurfaces (surface) > 0)
{
cairo_region_t *region = cairo_region_copy (impl->opaque_region);
for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
{
GdkWaylandSubsurface *sub = (GdkWaylandSubsurface *)gdk_surface_get_subsurface (surface, i);
if (sub->texture != NULL)
cairo_region_subtract_rectangle (region, &sub->dest);
}
wl_region = wl_region_from_cairo_region (GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface)),
region);
cairo_region_destroy (region);
}
else
wl_region = wl_region_from_cairo_region (GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface)),
impl->opaque_region);
}
wl_surface_set_opaque_region (impl->display_server.wl_surface, wl_region);
if (wl_region != NULL)
wl_region_destroy (wl_region);
impl->opaque_region_dirty = FALSE;
}
static void
gdk_wayland_surface_sync_input_region (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
struct wl_region *wl_region = NULL;
if (!impl->display_server.wl_surface)
return;
if (!impl->input_region_dirty)
return;
if (impl->input_region != NULL)
wl_region = wl_region_from_cairo_region (GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface)),
impl->input_region);
wl_surface_set_input_region (impl->display_server.wl_surface, wl_region);
if (wl_region != NULL)
wl_region_destroy (wl_region);
impl->input_region_dirty = FALSE;
}
static void
gdk_wayland_surface_sync_buffer_scale (GdkSurface *surface)
{
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (surface);
if (!self->display_server.wl_surface)
return;
if (!self->buffer_scale_dirty)
return;
if (self->display_server.viewport)
{
/* The viewport takes care of buffer scale */
}
else if (wl_surface_get_version (self->display_server.wl_surface) >= WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
{
wl_surface_set_buffer_scale (self->display_server.wl_surface,
gdk_fractional_scale_to_int (&self->scale));
}
self->buffer_scale_dirty = FALSE;
}
static void
gdk_wayland_surface_sync_viewport (GdkSurface *surface)
{
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (surface);
if (!self->display_server.viewport)
return;
if (!self->viewport_dirty)
return;
wp_viewport_set_destination (self->display_server.viewport,
surface->width,
surface->height);
self->viewport_dirty = FALSE;
}
void
gdk_wayland_surface_sync (GdkSurface *surface)
{
gdk_wayland_surface_sync_shadow (surface);
gdk_wayland_surface_sync_opaque_region (surface);
gdk_wayland_surface_sync_input_region (surface);
gdk_wayland_surface_sync_buffer_scale (surface);
gdk_wayland_surface_sync_viewport (surface);
}
static void
gdk_wayland_surface_fractional_scale_preferred_scale_cb (void *data,
struct wp_fractional_scale_v1 *fractional_scale,
uint32_t scale)
{
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (data);
GdkSurface *surface = GDK_SURFACE (self);
/* Notify app that scale changed */
gdk_wayland_surface_update_size (surface,
surface->width, surface->height,
&GDK_FRACTIONAL_SCALE_INIT (scale));
}
static const struct wp_fractional_scale_v1_listener fractional_scale_listener = {
gdk_wayland_surface_fractional_scale_preferred_scale_cb,
};
static void
surface_enter (void *data,
struct wl_surface *wl_surface,
struct wl_output *output)
{
GdkSurface *surface = GDK_SURFACE (data);
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
GdkDisplay *display = gdk_surface_get_display (surface);
GdkMonitor *monitor;
GDK_DISPLAY_DEBUG(gdk_surface_get_display (surface), EVENTS,
"surface enter, surface %p output %p", surface, output);
impl->display_server.outputs = g_slist_prepend (impl->display_server.outputs, output);
gdk_wayland_surface_update_scale (surface);
monitor = gdk_wayland_display_get_monitor_for_output (display, output);
gdk_surface_enter_monitor (surface, monitor);
}
static void
surface_leave (void *data,
struct wl_surface *wl_surface,
struct wl_output *output)
{
GdkSurface *surface = GDK_SURFACE (data);
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
GdkDisplay *display = gdk_surface_get_display (surface);
GdkMonitor *monitor;
GDK_DISPLAY_DEBUG (gdk_surface_get_display (surface), EVENTS,
"surface leave, surface %p output %p", surface, output);
impl->display_server.outputs = g_slist_remove (impl->display_server.outputs, output);
if (impl->display_server.outputs)
gdk_wayland_surface_update_scale (surface);
monitor = gdk_wayland_display_get_monitor_for_output (display, output);
gdk_surface_leave_monitor (surface, monitor);
}
static const struct wl_surface_listener surface_listener = {
surface_enter,
surface_leave
};
static void
gdk_wayland_surface_create_wl_surface (GdkSurface *surface)
{
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (surface);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
struct wl_surface *wl_surface;
wl_surface = wl_compositor_create_surface (display_wayland->compositor);
wl_proxy_set_queue ((struct wl_proxy *) wl_surface, self->event_queue);
wl_surface_add_listener (wl_surface, &surface_listener, self);
if (display_wayland->fractional_scale)
{
self->display_server.fractional_scale =
wp_fractional_scale_manager_v1_get_fractional_scale (display_wayland->fractional_scale,
wl_surface);
wp_fractional_scale_v1_add_listener (self->display_server.fractional_scale,
&fractional_scale_listener, self);
}
if (display_wayland->viewporter)
{
self->display_server.viewport =
wp_viewporter_get_viewport (display_wayland->viewporter, wl_surface);
}
self->display_server.wl_surface = wl_surface;
}
static void
gdk_wayland_surface_constructed (GObject *object)
{
GdkSurface *surface = GDK_SURFACE (object);
GdkWaylandSurface *self = GDK_WAYLAND_SURFACE (surface);
GdkDisplay *display = gdk_surface_get_display (surface);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkFrameClock *frame_clock = gdk_surface_get_frame_clock (surface);
self->event_queue = wl_display_create_queue (display_wayland->wl_display);
display_wayland->event_queues = g_list_prepend (display_wayland->event_queues,
self->event_queue);
/* More likely to be right than just assuming 1 */
if (wl_compositor_get_version (display_wayland->compositor) >= WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
{
GdkMonitor *monitor = g_list_model_get_item (gdk_display_get_monitors (display), 0);
if (monitor)
{
guint32 monitor_scale = gdk_monitor_get_scale_factor (monitor);
if (monitor_scale != 1)
{
self->scale = GDK_FRACTIONAL_SCALE_INIT_INT (monitor_scale);
self->buffer_scale_dirty = TRUE;
}
g_object_unref (monitor);
}
}
gdk_wayland_surface_create_wl_surface (surface);
g_signal_connect (frame_clock, "before-paint", G_CALLBACK (on_frame_clock_before_paint), surface);
g_signal_connect (frame_clock, "after-paint", G_CALLBACK (on_frame_clock_after_paint), surface);
G_OBJECT_CLASS (gdk_wayland_surface_parent_class)->constructed (object);
}
static void
gdk_wayland_surface_destroy_wl_surface (GdkWaylandSurface *self)
{
if (self->display_server.egl_window)
{
gdk_surface_set_egl_native_window (GDK_SURFACE (self), NULL);
g_clear_pointer (&self->display_server.egl_window, wl_egl_window_destroy);
}
g_clear_pointer (&self->display_server.viewport, wp_viewport_destroy);
g_clear_pointer (&self->display_server.fractional_scale, wp_fractional_scale_v1_destroy);
g_clear_pointer (&self->display_server.wl_surface, wl_surface_destroy);
g_clear_pointer (&self->display_server.outputs, g_slist_free);
}
static void
maybe_notify_mapped (GdkSurface *surface)
{
if (surface->destroyed)
return;
if (!GDK_SURFACE_IS_MAPPED (surface))
gdk_surface_set_is_mapped (surface, TRUE);
}
static void
gdk_wayland_surface_configure (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (!impl->initial_configure_received)
{
gdk_surface_thaw_updates (surface);
impl->initial_configure_received = TRUE;
impl->pending.is_initial_configure = TRUE;
maybe_notify_mapped (surface);
}
impl->has_uncommitted_ack_configure = TRUE;
GDK_WAYLAND_SURFACE_GET_CLASS (impl)->handle_configure (impl);
impl->last_configure_serial = impl->pending.serial;
memset (&impl->pending, 0, sizeof (impl->pending));
}
static void
gdk_wayland_surface_handle_configure (GdkWaylandSurface *impl,
uint32_t serial)
{
impl->pending.is_dirty = TRUE;
impl->pending.serial = serial;
if (impl->state_freeze_count > 0)
return;
gdk_wayland_surface_configure (GDK_SURFACE (impl));
}
static void
xdg_surface_configure (void *data,
struct xdg_surface *xdg_surface,
uint32_t serial)
{
gdk_wayland_surface_handle_configure (GDK_WAYLAND_SURFACE (data), serial);
}
static const struct xdg_surface_listener xdg_surface_listener = {
xdg_surface_configure,
};
static void
zxdg_surface_v6_configure (void *data,
struct zxdg_surface_v6 *xdg_surface,
uint32_t serial)
{
gdk_wayland_surface_handle_configure (GDK_WAYLAND_SURFACE (data), serial);
}
static const struct zxdg_surface_v6_listener zxdg_surface_v6_listener = {
zxdg_surface_v6_configure,
};
void
gdk_wayland_surface_create_xdg_surface_resources (GdkSurface *surface)
{
GdkWaylandDisplay *display =
GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
switch (display->shell_variant)
{
case GDK_WAYLAND_SHELL_VARIANT_XDG_SHELL:
impl->display_server.xdg_surface =
xdg_wm_base_get_xdg_surface (display->xdg_wm_base,
impl->display_server.wl_surface);
wl_proxy_set_queue ((struct wl_proxy *) impl->display_server.xdg_surface,
impl->event_queue);
xdg_surface_add_listener (impl->display_server.xdg_surface,
&xdg_surface_listener,
surface);
break;
case GDK_WAYLAND_SHELL_VARIANT_ZXDG_SHELL_V6:
impl->display_server.zxdg_surface_v6 =
zxdg_shell_v6_get_xdg_surface (display->zxdg_shell_v6,
impl->display_server.wl_surface);
zxdg_surface_v6_add_listener (impl->display_server.zxdg_surface_v6,
&zxdg_surface_v6_listener,
surface);
break;
default:
g_assert_not_reached ();
}
}
static void
unmap_popups_for_surface (GdkSurface *surface)
{
GdkWaylandDisplay *display_wayland;
GList *l;
display_wayland = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
for (l = display_wayland->current_popups; l; l = l->next)
{
GdkSurface *popup = l->data;
if (popup->parent == surface)
{
g_warning ("Tried to unmap the parent of a popup");
gdk_surface_hide (popup);
return;
}
}
}
void
gdk_wayland_surface_hide_surface (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (!impl->mapped)
return;
unmap_popups_for_surface (surface);
g_clear_pointer (&impl->frame_callback, wl_callback_destroy);
if (impl->awaiting_frame_frozen)
{
impl->awaiting_frame_frozen = FALSE;
gdk_surface_thaw_updates (surface);
}
GDK_WAYLAND_SURFACE_GET_CLASS (impl)->hide_surface (impl);
if (impl->display_server.xdg_surface)
{
xdg_surface_destroy (impl->display_server.xdg_surface);
impl->display_server.xdg_surface = NULL;
if (!impl->initial_configure_received)
gdk_surface_thaw_updates (surface);
else
impl->initial_configure_received = FALSE;
}
if (impl->display_server.zxdg_surface_v6)
{
g_clear_pointer (&impl->display_server.zxdg_surface_v6, zxdg_surface_v6_destroy);
if (!impl->initial_configure_received)
gdk_surface_thaw_updates (surface);
else
impl->initial_configure_received = FALSE;
}
wl_surface_attach (impl->display_server.wl_surface, NULL, 0, 0);
wl_surface_commit (impl->display_server.wl_surface);
impl->has_uncommitted_ack_configure = FALSE;
impl->has_pending_subsurface_commits = FALSE;
impl->last_sent_window_geometry = (GdkRectangle) { 0 };
impl->mapped = FALSE;
}
static void
gdk_wayland_surface_hide (GdkSurface *surface)
{
GdkSeat *seat;
seat = gdk_display_get_default_seat (surface->display);
if (seat)
{
if (surface->autohide)
gdk_seat_ungrab (seat);
gdk_wayland_seat_clear_touchpoints (GDK_WAYLAND_SEAT (seat), surface);
}
gdk_wayland_surface_hide_surface (surface);
_gdk_surface_clear_update_area (surface);
}
void
gdk_wayland_surface_move_resize (GdkSurface *surface,
int x,
int y,
int width,
int height)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
surface->x = x;
surface->y = y;
gdk_wayland_surface_update_size (surface, width, height, &impl->scale);
}
static void
gdk_wayland_surface_get_geometry (GdkSurface *surface,
int *x,
int *y,
int *width,
int *height)
{
if (!GDK_SURFACE_DESTROYED (surface))
{
if (x)
*x = surface->x;
if (y)
*y = surface->y;
if (width)
*width = surface->width;
if (height)
*height = surface->height;
}
}
static void
gdk_wayland_surface_get_root_coords (GdkSurface *surface,
int x,
int y,
int *root_x,
int *root_y)
{
/*
* Wayland does not have a global coordinate space shared between surfaces. In
* fact, for regular toplevels, we have no idea where our surfaces are
* positioned, relatively.
*
* However, there are some cases like popups and subsurfaces where we do have
* some amount of control over the placement of our surface, and we can
* semi-accurately control the x/y position of these surfaces, if they are
* relative to another surface.
*
* To pretend we have something called a root coordinate space, assume all
* parent-less surfaces are positioned in (0, 0), and all relative positioned
* popups and subsurfaces are placed within this fake root coordinate space.
*
* For example a 200x200 large toplevel surface will have the position (0, 0).
* If a popup positioned in the middle of the toplevel will have the fake
* position (100,100). Furthermore, if a positioned is placed in the middle
* that popup, will have the fake position (150,150), even though it has the
* relative position (50,50). These three surfaces would make up one single
* fake root coordinate space.
*/
if (root_x)
*root_x = surface->x + x;
if (root_y)
*root_y = surface->y + y;
}
static gboolean
gdk_wayland_surface_get_device_state (GdkSurface *surface,
GdkDevice *device,
double *x,
double *y,
GdkModifierType *mask)
{
if (GDK_SURFACE_DESTROYED (surface))
return FALSE;
gdk_wayland_device_query_state (device, surface, x, y, mask);
return *x >= 0 && *y >= 0 && *x < surface->width && *y < surface->height;
}
static void
gdk_wayland_surface_set_input_region (GdkSurface *surface,
cairo_region_t *input_region)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (GDK_SURFACE_DESTROYED (surface))
return;
g_clear_pointer (&impl->input_region, cairo_region_destroy);
if (input_region)
impl->input_region = cairo_region_copy (input_region);
impl->input_region_dirty = TRUE;
}
static void
gdk_wayland_surface_destroy (GdkSurface *surface,
gboolean foreign_destroy)
{
GdkFrameClock *frame_clock;
/* Wayland surfaces can't be externally destroyed; we may possibly
* eventually want to use this path at display close-down
*/
g_return_if_fail (!foreign_destroy);
gdk_wayland_surface_hide_surface (surface);
if (GDK_IS_TOPLEVEL (surface))
gdk_wayland_toplevel_destroy (GDK_TOPLEVEL (surface));
gdk_wayland_surface_destroy_wl_surface (GDK_WAYLAND_SURFACE (surface));
frame_clock = gdk_surface_get_frame_clock (surface);
g_signal_handlers_disconnect_by_func (frame_clock, on_frame_clock_before_paint, surface);
g_signal_handlers_disconnect_by_func (frame_clock, on_frame_clock_after_paint, surface);
}
static void
gdk_wayland_surface_destroy_notify (GdkSurface *surface)
{
if (!GDK_SURFACE_DESTROYED (surface))
{
g_warning ("GdkSurface %p unexpectedly destroyed", surface);
_gdk_surface_destroy (surface, TRUE);
}
g_object_unref (surface);
}
static double
gdk_wayland_surface_get_scale (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
return gdk_fractional_scale_to_double (&impl->scale);
}
static void
gdk_wayland_surface_set_opaque_region (GdkSurface *surface,
cairo_region_t *region)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (GDK_SURFACE_DESTROYED (surface))
return;
g_clear_pointer (&impl->opaque_region, cairo_region_destroy);
impl->opaque_region = cairo_region_reference (region);
impl->opaque_region_dirty = TRUE;
}
static void
gdk_wayland_surface_default_handle_configure (GdkWaylandSurface *surface)
{
}
static void
gdk_wayland_surface_default_handle_frame (GdkWaylandSurface *surface)
{
}
static void
gdk_wayland_surface_default_hide_surface (GdkWaylandSurface *surface)
{
}
static void
gdk_wayland_surface_class_init (GdkWaylandSurfaceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkSurfaceClass *surface_class = GDK_SURFACE_CLASS (klass);
object_class->constructed = gdk_wayland_surface_constructed;
object_class->dispose = gdk_wayland_surface_dispose;
object_class->finalize = gdk_wayland_surface_finalize;
surface_class->hide = gdk_wayland_surface_hide;
surface_class->get_geometry = gdk_wayland_surface_get_geometry;
surface_class->get_root_coords = gdk_wayland_surface_get_root_coords;
surface_class->get_device_state = gdk_wayland_surface_get_device_state;
surface_class->set_input_region = gdk_wayland_surface_set_input_region;
surface_class->destroy = gdk_wayland_surface_destroy;
surface_class->beep = gdk_wayland_surface_beep;
surface_class->destroy_notify = gdk_wayland_surface_destroy_notify;
surface_class->drag_begin = _gdk_wayland_surface_drag_begin;
surface_class->get_scale = gdk_wayland_surface_get_scale;
surface_class->set_opaque_region = gdk_wayland_surface_set_opaque_region;
surface_class->request_layout = gdk_wayland_surface_request_layout;
surface_class->create_subsurface = gdk_wayland_surface_create_subsurface;
klass->handle_configure = gdk_wayland_surface_default_handle_configure;
klass->handle_frame = gdk_wayland_surface_default_handle_frame;
klass->hide_surface = gdk_wayland_surface_default_hide_surface;
}
/* }}} */
/* {{{ Private Surface API */
struct wl_output *
gdk_wayland_surface_get_wl_output (GdkSurface *surface)
{
GdkWaylandSurface *impl;
g_return_val_if_fail (GDK_IS_WAYLAND_SURFACE (surface), NULL);
impl = GDK_WAYLAND_SURFACE (surface);
/* We pick the head of the list as this is the last entered output */
if (impl->display_server.outputs)
return (struct wl_output *) impl->display_server.outputs->data;
return NULL;
}
void
_gdk_wayland_surface_offset_next_wl_buffer (GdkSurface *surface,
int x,
int y)
{
GdkWaylandSurface *impl;
g_return_if_fail (GDK_IS_WAYLAND_SURFACE (surface));
impl = GDK_WAYLAND_SURFACE (surface);
impl->pending_buffer_offset_x = x;
impl->pending_buffer_offset_y = y;
}
void
gdk_wayland_surface_ensure_wl_egl_window (GdkSurface *surface)
{
GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
if (impl->display_server.egl_window == NULL)
{
int width, height;
get_egl_window_size (surface, &width, &height);
impl->display_server.egl_window =
wl_egl_window_create (impl->display_server.wl_surface, width, height);
gdk_surface_set_egl_native_window (surface, impl->display_server.egl_window);
}
}
/* }}} */
/* {{{ Surface API */
/**
* gdk_wayland_surface_get_wl_surface: (skip)
* @surface: (type GdkWaylandSurface): a `GdkSurface`
*
* Returns the Wayland `wl_surface` of a `GdkSurface`.
*
* Returns: (transfer none): a Wayland `wl_surface`
*/
struct wl_surface *
gdk_wayland_surface_get_wl_surface (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_WAYLAND_SURFACE (surface), NULL);
return GDK_WAYLAND_SURFACE (surface)->display_server.wl_surface;
}
/* }}}} */
/* vim:set foldmethod=marker expandtab: */