/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * Copyright (C) 2014 Red Hat * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. * * Written by: * Jasper St. Pierre */ #include "config.h" #include "meta-window-wayland.h" #include #include #include /* for strerror () */ #include "window-private.h" #include "boxes-private.h" #include "stack-tracker.h" #include "meta-wayland-private.h" #include "meta-wayland-surface.h" #include "meta-wayland-xdg-shell.h" #include "backends/meta-backend-private.h" #include "compositor/meta-surface-actor-wayland.h" struct _MetaWindowWayland { MetaWindow parent; MetaWaylandSerial pending_configure_serial; gboolean has_pending_move; int pending_move_x; int pending_move_y; int last_sent_x; int last_sent_y; int last_sent_width; int last_sent_height; }; struct _MetaWindowWaylandClass { MetaWindowClass parent_class; }; G_DEFINE_TYPE (MetaWindowWayland, meta_window_wayland, META_TYPE_WINDOW) static void meta_window_wayland_manage (MetaWindow *window) { MetaDisplay *display = window->display; meta_display_register_wayland_window (display, window); { meta_stack_tracker_record_add (window->screen->stack_tracker, window->stamp, 0); } meta_wayland_surface_window_managed (window->surface, window); } static void meta_window_wayland_unmanage (MetaWindow *window) { { meta_stack_tracker_record_remove (window->screen->stack_tracker, window->stamp, 0); } meta_display_unregister_wayland_window (window->display, window); } static void meta_window_wayland_ping (MetaWindow *window, guint32 serial) { meta_wayland_surface_ping (window->surface, serial); } static void meta_window_wayland_delete (MetaWindow *window, guint32 timestamp) { meta_wayland_surface_delete (window->surface); } static void meta_window_wayland_kill (MetaWindow *window) { MetaWaylandSurface *surface = window->surface; struct wl_resource *resource = surface->resource; /* Send the client an unrecoverable error to kill the client. */ wl_resource_post_error (resource, WL_DISPLAY_ERROR_NO_MEMORY, "User requested that we kill you. Sorry. Don't take it too personally."); } static void meta_window_wayland_focus (MetaWindow *window, guint32 timestamp) { if (window->input) meta_display_set_input_focus_window (window->display, window, FALSE, timestamp); } static void surface_state_changed (MetaWindow *window) { MetaWindowWayland *wl_window = META_WINDOW_WAYLAND (window); /* don't send notify when the window is being unmanaged */ if (window->unmanaging) return; meta_wayland_surface_configure_notify (window->surface, wl_window->last_sent_x, wl_window->last_sent_y, wl_window->last_sent_width, wl_window->last_sent_height, &wl_window->pending_configure_serial); } static void meta_window_wayland_grab_op_began (MetaWindow *window, MetaGrabOp op) { if (meta_grab_op_is_resizing (op)) surface_state_changed (window); META_WINDOW_CLASS (meta_window_wayland_parent_class)->grab_op_began (window, op); } static void meta_window_wayland_grab_op_ended (MetaWindow *window, MetaGrabOp op) { if (meta_grab_op_is_resizing (op)) surface_state_changed (window); META_WINDOW_CLASS (meta_window_wayland_parent_class)->grab_op_ended (window, op); } static void meta_window_wayland_move_resize_internal (MetaWindow *window, int gravity, MetaRectangle unconstrained_rect, MetaRectangle constrained_rect, MetaMoveResizeFlags flags, MetaMoveResizeResultFlags *result) { MetaWindowWayland *wl_window = META_WINDOW_WAYLAND (window); gboolean can_move_now; int configured_x; int configured_y; int configured_width; int configured_height; int monitor_scale; g_assert (window->frame == NULL); /* don't do anything if we're dropping the window, see #751847 */ if (window->unmanaging) return; configured_x = constrained_rect.x; configured_y = constrained_rect.y; /* The scale the window is drawn in might change depending on what monitor it * is mainly on. Scale the configured rectangle to be in logical pixel * coordinate space so that we can have a scale independent size to pass * to the Wayland surface. */ monitor_scale = meta_window_wayland_get_main_monitor_scale (window); configured_width = constrained_rect.width / monitor_scale; configured_height = constrained_rect.height / monitor_scale; /* For wayland clients, the size is completely determined by the client, * and while this allows to avoid some trickery with frames and the resulting * lagging, we also need to insist a bit when the constraints would apply * a different size than the client decides. * * Note that this is not generally a problem for normal toplevel windows (the * constraints don't see the size hints, or just change the position), but * it can be for maximized or fullscreen. */ if (flags & META_MOVE_RESIZE_WAYLAND_RESIZE) { /* This is a call to wl_surface_commit(), ignore the constrained_rect and * update the real client size to match the buffer size. */ if (window->rect.width != unconstrained_rect.width || window->rect.height != unconstrained_rect.height) { *result |= META_MOVE_RESIZE_RESULT_RESIZED; window->rect.width = unconstrained_rect.width; window->rect.height = unconstrained_rect.height; } /* This is a commit of an attach. We should move the window to match the * new position the client wants. */ can_move_now = TRUE; } else { /* If the size changed, or the state changed, then we have to wait until * the client acks our configure before moving the window. */ if (constrained_rect.width != window->rect.width || constrained_rect.height != window->rect.height || (flags & META_MOVE_RESIZE_STATE_CHANGED)) { /* If the constrained size is 1x1 and the unconstrained size is 0x0 * it means that we are trying to resize a window where the client has * not yet committed a buffer. The 1x1 constrained size is a result of * how the constraints code works. Lets avoid trying to have the * client configure itself to draw on a 1x1 surface. * * We cannot guard against only an empty unconstrained_rect here, * because the client may have created a xdg surface without a buffer * attached and asked it to be maximized. In such case we should let * it know about the expected window geometry of a maximized window, * even though there is currently no buffer attached. */ if (unconstrained_rect.width == 0 && unconstrained_rect.height == 0 && constrained_rect.width == 1 && constrained_rect.height == 1) return; meta_wayland_surface_configure_notify (window->surface, configured_x, configured_y, configured_width, configured_height, &wl_window->pending_configure_serial); /* We need to wait until the resize completes before we can move */ can_move_now = FALSE; } else { /* We're just moving the window, so we don't need to wait for a configure * and then ack to simply move the window. */ can_move_now = TRUE; } } wl_window->last_sent_x = configured_x; wl_window->last_sent_y = configured_y; wl_window->last_sent_width = configured_width; wl_window->last_sent_height = configured_height; if (can_move_now) { int new_x = constrained_rect.x; int new_y = constrained_rect.y; if (new_x != window->rect.x || new_y != window->rect.y) { *result |= META_MOVE_RESIZE_RESULT_MOVED; window->rect.x = new_x; window->rect.y = new_y; } int new_buffer_x = new_x - window->custom_frame_extents.left; int new_buffer_y = new_y - window->custom_frame_extents.top; if (new_buffer_x != window->buffer_rect.x || new_buffer_y != window->buffer_rect.y) { *result |= META_MOVE_RESIZE_RESULT_MOVED; window->buffer_rect.x = new_buffer_x; window->buffer_rect.y = new_buffer_y; } } else { int new_x = constrained_rect.x; int new_y = constrained_rect.y; if (new_x != window->rect.x || new_y != window->rect.y) { wl_window->has_pending_move = TRUE; wl_window->pending_move_x = new_x; wl_window->pending_move_y = new_y; } } } static void scale_size (int *width, int *height, float scale) { if (*width < G_MAXINT) { float new_width = (*width * scale); *width = (int) MIN (new_width, G_MAXINT); } if (*height < G_MAXINT) { float new_height = (*height * scale); *height = (int) MIN (new_height, G_MAXINT); } } static void scale_rect_size (MetaRectangle *rect, float scale) { scale_size (&rect->width, &rect->height, scale); } static void meta_window_wayland_update_main_monitor (MetaWindow *window) { MetaBackend *backend = meta_get_backend (); MetaMonitorManager *monitor_manager = meta_backend_get_monitor_manager (backend); MetaWindow *toplevel_window; MetaLogicalMonitor *from; MetaLogicalMonitor *to; MetaLogicalMonitor *scaled_new; float scale; MetaRectangle rect; from = window->monitor; /* If the window is not a toplevel window (i.e. it's a popup window) just use * the monitor of the toplevel. */ toplevel_window = meta_wayland_surface_get_toplevel_window (window->surface); if (toplevel_window != window) { window->monitor = toplevel_window->monitor; return; } /* Require both the current and the new monitor would be the new main monitor, * even given the resulting scale the window would end up having. This is * needed to avoid jumping back and forth between the new and the old, since * changing main monitor may cause the window to be resized so that it no * longer have that same new main monitor. */ to = meta_window_calculate_main_logical_monitor (window); if (from == to) return; /* If we are setting the first output, unsetting the output, or the new has * the same scale as the old no need to do any further checking. */ if (from == NULL || to == NULL || from->scale == to->scale) { window->monitor = to; return; } /* To avoid a window alternating between two main monitors because scaling * changes the main monitor, wait until both the current and the new scale * will result in the same main monitor. */ scale = (float)to->scale / from->scale; rect = window->rect; scale_rect_size (&rect, scale); scaled_new = meta_monitor_manager_get_logical_monitor_from_rect (monitor_manager, &rect); if (to != scaled_new) return; window->monitor = to; } static void meta_window_wayland_main_monitor_changed (MetaWindow *window, const MetaLogicalMonitor *old) { float scale_factor; MetaWaylandSurface *surface; /* This function makes sure that window geometry, window actor geometry and * surface actor geometry gets set according the old and current main monitor * scale. If there either is no past or current main monitor, or if the scale * didn't change, there is nothing to do. */ if (old == NULL || window->monitor == NULL || old->scale == window->monitor->scale) return; /* MetaWindow keeps its rectangles in the physical pixel coordinate space. * When the main monitor of a window changes, it can cause the corresponding * window surfaces to be scaled given the monitor scale, so we need to scale * the rectangles in MetaWindow accordingly. */ scale_factor = (float)window->monitor->scale / old->scale; /* Window size. */ scale_rect_size (&window->rect, scale_factor); scale_rect_size (&window->unconstrained_rect, scale_factor); scale_rect_size (&window->saved_rect, scale_factor); scale_size (&window->size_hints.min_width, &window->size_hints.min_height, scale_factor); scale_size (&window->size_hints.max_width, &window->size_hints.max_height, scale_factor); /* Window geometry offset (XXX: Need a better place, see * meta_window_wayland_move_resize). */ window->custom_frame_extents.left = (int)(scale_factor * window->custom_frame_extents.left); window->custom_frame_extents.top = (int)(scale_factor * window->custom_frame_extents.top); /* Buffer rect. */ scale_rect_size (&window->buffer_rect, scale_factor); window->buffer_rect.x = window->rect.x - window->custom_frame_extents.left; window->buffer_rect.y = window->rect.y - window->custom_frame_extents.top; meta_compositor_sync_window_geometry (window->display->compositor, window, TRUE); /* The surface actor needs to update the scale recursively for itself and all * its subsurfaces */ surface = window->surface; if (surface) { MetaSurfaceActorWayland *actor = META_SURFACE_ACTOR_WAYLAND (surface->surface_actor); meta_surface_actor_wayland_sync_state_recursive (actor); } meta_window_emit_size_changed (window); } static uint32_t meta_window_wayland_get_client_pid (MetaWindow *window) { MetaWaylandSurface *surface = window->surface; struct wl_resource *resource = surface->resource; pid_t pid; wl_client_get_credentials (wl_resource_get_client (resource), &pid, NULL, NULL); return (uint32_t)pid; } static void appears_focused_changed (GObject *object, GParamSpec *pspec, gpointer user_data) { MetaWindow *window = META_WINDOW (object); surface_state_changed (window); } static void meta_window_wayland_init (MetaWindowWayland *wl_window) { MetaWindow *window = META_WINDOW (wl_window); g_signal_connect (window, "notify::appears-focused", G_CALLBACK (appears_focused_changed), NULL); } static void meta_window_wayland_class_init (MetaWindowWaylandClass *klass) { MetaWindowClass *window_class = META_WINDOW_CLASS (klass); window_class->manage = meta_window_wayland_manage; window_class->unmanage = meta_window_wayland_unmanage; window_class->ping = meta_window_wayland_ping; window_class->delete = meta_window_wayland_delete; window_class->kill = meta_window_wayland_kill; window_class->focus = meta_window_wayland_focus; window_class->grab_op_began = meta_window_wayland_grab_op_began; window_class->grab_op_ended = meta_window_wayland_grab_op_ended; window_class->move_resize_internal = meta_window_wayland_move_resize_internal; window_class->update_main_monitor = meta_window_wayland_update_main_monitor; window_class->main_monitor_changed = meta_window_wayland_main_monitor_changed; window_class->get_client_pid = meta_window_wayland_get_client_pid; } MetaWindow * meta_window_wayland_new (MetaDisplay *display, MetaWaylandSurface *surface) { XWindowAttributes attrs = { 0 }; MetaScreen *scr = display->screen; MetaWindow *window; /* * Set attributes used by _meta_window_shared_new, don't bother trying to fake * X11 window attributes with the rest, since they'll be ignored anyway. */ attrs.x = 0; attrs.y = 0; attrs.width = 0; attrs.height = 0; attrs.depth = 24; attrs.visual = NULL; attrs.map_state = IsUnmapped; attrs.override_redirect = False; /* XXX: Note: In the Wayland case we currently still trap X errors while * creating a MetaWindow because we will still be making various redundant * X requests (passing a window xid of None) until we thoroughly audit all * the code to make sure it knows about non X based clients... */ meta_error_trap_push (display); /* Push a trap over all of window * creation, to reduce XSync() calls */ window = _meta_window_shared_new (display, scr, META_WINDOW_CLIENT_TYPE_WAYLAND, surface, None, WithdrawnState, META_COMP_EFFECT_CREATE, &attrs); window->can_ping = TRUE; meta_error_trap_pop (display); /* pop the XSync()-reducing trap */ return window; } static gboolean should_do_pending_move (MetaWindowWayland *wl_window, MetaWaylandSerial *acked_configure_serial) { if (!wl_window->has_pending_move) return FALSE; if (wl_window->pending_configure_serial.set) { /* If we're waiting for a configure and this isn't an ACK for * any configure, then fizzle it out. */ if (!acked_configure_serial->set) return FALSE; /* If we're waiting for a configure and this isn't an ACK for * the configure we're waiting for, then fizzle it out. */ if (acked_configure_serial->value != wl_window->pending_configure_serial.value) return FALSE; } return TRUE; } int meta_window_wayland_get_main_monitor_scale (MetaWindow *window) { return window->monitor->scale; } /** * meta_window_move_resize_wayland: * * Complete a resize operation from a wayland client. */ void meta_window_wayland_move_resize (MetaWindow *window, MetaWaylandSerial *acked_configure_serial, MetaRectangle new_geom, int dx, int dy) { MetaWindowWayland *wl_window = META_WINDOW_WAYLAND (window); int gravity; MetaRectangle rect; MetaMoveResizeFlags flags; int monitor_scale; /* new_geom is in the logical pixel coordinate space, but MetaWindow wants its * rects to represent what in turn will end up on the stage, i.e. we need to * scale new_geom to physical pixels given what buffer scale and texture scale * is in use. */ monitor_scale = meta_window_wayland_get_main_monitor_scale (window); new_geom.x *= monitor_scale; new_geom.y *= monitor_scale; new_geom.width *= monitor_scale; new_geom.height *= monitor_scale; /* The (dx, dy) offset is also in logical pixel coordinate space and needs * to be scaled in the same way as new_geom. */ dx *= monitor_scale; dy *= monitor_scale; /* XXX: Find a better place to store the window geometry offsets. */ window->custom_frame_extents.left = new_geom.x; window->custom_frame_extents.top = new_geom.y; flags = META_MOVE_RESIZE_WAYLAND_RESIZE; /* x/y are ignored when we're doing interactive resizing */ if (!meta_grab_op_is_resizing (window->display->grab_op)) { if (wl_window->has_pending_move && should_do_pending_move (wl_window, acked_configure_serial)) { rect.x = wl_window->pending_move_x; rect.y = wl_window->pending_move_y; wl_window->has_pending_move = FALSE; flags |= META_MOVE_RESIZE_MOVE_ACTION; } else { rect.x = window->rect.x; rect.y = window->rect.y; } if (dx != 0 || dy != 0) { rect.x += dx; rect.y += dy; flags |= META_MOVE_RESIZE_MOVE_ACTION; } } wl_window->pending_configure_serial.set = FALSE; rect.width = new_geom.width; rect.height = new_geom.height; if (rect.width != window->rect.width || rect.height != window->rect.height) flags |= META_MOVE_RESIZE_RESIZE_ACTION; gravity = meta_resize_gravity_from_grab_op (window->display->grab_op); meta_window_move_resize_internal (window, flags, gravity, rect); } void meta_window_wayland_place_relative_to (MetaWindow *window, MetaWindow *other, int x, int y) { int monitor_scale; /* If there is no monitor, we can't position the window reliably. */ if (!other->monitor) return; /* Scale the relative coordinate (x, y) from logical pixels to physical * pixels. */ monitor_scale = other->monitor->scale; meta_window_move_frame (window, FALSE, other->buffer_rect.x + (x * monitor_scale), other->buffer_rect.y + (y * monitor_scale)); window->placed = TRUE; } void meta_window_place_with_placement_rule (MetaWindow *window, MetaPlacementRule *placement_rule) { g_clear_pointer (&window->placement_rule, g_free); window->placement_rule = g_new0 (MetaPlacementRule, 1); *window->placement_rule = *placement_rule; window->unconstrained_rect.width = placement_rule->width; window->unconstrained_rect.height = placement_rule->height; meta_window_force_placement (window); } void meta_window_wayland_set_min_size (MetaWindow *window, int width, int height) { gint64 new_width, new_height; float scale; meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min size %d x %d\n", window->desc, width, height); if (width == 0 && height == 0) { window->size_hints.min_width = 0; window->size_hints.min_height = 0; window->size_hints.flags &= ~PMinSize; return; } scale = (float) meta_window_wayland_get_main_monitor_scale (window); scale_size (&width, &height, scale); new_width = width + (window->custom_frame_extents.left + window->custom_frame_extents.right); new_height = height + (window->custom_frame_extents.top + window->custom_frame_extents.bottom); window->size_hints.min_width = (int) MIN (new_width, G_MAXINT); window->size_hints.min_height = (int) MIN (new_height, G_MAXINT); window->size_hints.flags |= PMinSize; } void meta_window_wayland_set_max_size (MetaWindow *window, int width, int height) { gint64 new_width, new_height; float scale; meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max size %d x %d\n", window->desc, width, height); if (width == 0 && height == 0) { window->size_hints.max_width = G_MAXINT; window->size_hints.max_height = G_MAXINT; window->size_hints.flags &= ~PMaxSize; return; } scale = (float) meta_window_wayland_get_main_monitor_scale (window); scale_size (&width, &height, scale); new_width = width + (window->custom_frame_extents.left + window->custom_frame_extents.right); new_height = height + (window->custom_frame_extents.top + window->custom_frame_extents.bottom); window->size_hints.max_width = (int) ((new_width > 0 && new_width < G_MAXINT) ? new_width : G_MAXINT); window->size_hints.max_height = (int) ((new_height > 0 && new_height < G_MAXINT) ? new_height : G_MAXINT); window->size_hints.flags |= PMaxSize; } void meta_window_wayland_get_min_size (MetaWindow *window, int *width, int *height) { gint64 current_width, current_height; float scale; if (!(window->size_hints.flags & PMinSize)) { /* Zero means unlimited */ *width = 0; *height = 0; return; } current_width = window->size_hints.min_width - (window->custom_frame_extents.left + window->custom_frame_extents.right); current_height = window->size_hints.min_height - (window->custom_frame_extents.top + window->custom_frame_extents.bottom); *width = MAX (current_width, 0); *height = MAX (current_height, 0); scale = 1.0 / (float) meta_window_wayland_get_main_monitor_scale (window); scale_size (width, height, scale); } void meta_window_wayland_get_max_size (MetaWindow *window, int *width, int *height) { gint64 current_width = 0; gint64 current_height = 0; float scale; if (!(window->size_hints.flags & PMaxSize)) { /* Zero means unlimited */ *width = 0; *height = 0; return; } if (window->size_hints.max_width < G_MAXINT) current_width = window->size_hints.max_width - (window->custom_frame_extents.left + window->custom_frame_extents.right); if (window->size_hints.max_height < G_MAXINT) current_height = window->size_hints.max_height - (window->custom_frame_extents.top + window->custom_frame_extents.bottom); *width = CLAMP (current_width, 0, G_MAXINT); *height = CLAMP (current_height, 0, G_MAXINT); scale = 1.0 / (float) meta_window_wayland_get_main_monitor_scale (window); scale_size (width, height, scale); }