forked from 12to11/12to11
1313 lines
31 KiB
C
1313 lines
31 KiB
C
/* Wayland compositor running on top of an X server.
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Copyright (C) 2022 to various contributors.
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This file is part of 12to11.
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12to11 is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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12to11 is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with 12to11. If not, see <https://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include "compositor.h"
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/* List of all currently existing surfaces. */
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Surface all_surfaces;
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static DestroyCallback *
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AddDestroyCallbackAfter (DestroyCallback *after)
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{
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DestroyCallback *callback;
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callback = XLCalloc (1, sizeof *callback);
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callback->next = after->next;
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callback->last = after;
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after->next->last = callback;
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after->next = callback;
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return callback;
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}
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static void
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UnlinkDestroyCallback (DestroyCallback *callback)
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{
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callback->last->next = callback->next;
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callback->next->last = callback->last;
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callback->last = callback;
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callback->next = callback;
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}
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static UnmapCallback *
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AddUnmapCallbackAfter (UnmapCallback *after)
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{
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UnmapCallback *callback;
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callback = XLCalloc (1, sizeof *callback);
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callback->next = after->next;
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callback->last = after;
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after->next->last = callback;
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after->next = callback;
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return callback;
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}
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static void
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UnlinkUnmapCallback (UnmapCallback *callback)
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{
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callback->last->next = callback->next;
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callback->next->last = callback->last;
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callback->last = callback;
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callback->next = callback;
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}
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static CommitCallback *
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AddCommitCallbackAfter (CommitCallback *after)
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{
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CommitCallback *callback;
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callback = XLSafeMalloc (sizeof *callback);
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if (!callback)
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return callback;
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callback->next = after->next;
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callback->last = after;
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after->next->last = callback;
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after->next = callback;
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return callback;
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}
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static void
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UnlinkCommitCallback (CommitCallback *callback)
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{
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callback->last->next = callback->next;
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callback->next->last = callback->last;
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callback->last = callback;
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callback->next = callback;
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}
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static void
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RunCommitCallbacks (Surface *surface)
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{
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CommitCallback *callback;
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/* first is a sentinel node. */
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callback = surface->commit_callbacks.next;
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while (callback != &surface->commit_callbacks)
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{
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callback->commit (surface, callback->data);
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callback = callback->next;
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}
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}
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static void
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RunUnmapCallbacks (Surface *surface)
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{
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UnmapCallback *callback, *last;
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/* first is a sentinel node. */
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callback = surface->unmap_callbacks.next;
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while (callback != &surface->unmap_callbacks)
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{
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last = callback;
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callback = callback->next;
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last->unmap (last->data);
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}
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}
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static void
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FreeCommitCallbacks (CommitCallback *first)
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{
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CommitCallback *callback, *last;
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/* first is a sentinel node. */
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callback = first->next;
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while (callback != first)
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{
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last = callback;
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callback = callback->next;
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XLFree (last);
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}
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}
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static void
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FreeUnmapCallbacks (UnmapCallback *first)
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{
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UnmapCallback *callback, *last;
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/* first is a sentinel node. */
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callback = first->next;
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while (callback != first)
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{
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last = callback;
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callback = callback->next;
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XLFree (last);
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}
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}
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static void
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FreeDestroyCallbacks (DestroyCallback *first)
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{
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DestroyCallback *callback, *last;
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callback = first->next;
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while (callback != first)
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{
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last = callback;
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callback = callback->next;
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last->destroy_func (last->data);
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XLFree (last);
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}
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}
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static FrameCallback *
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AddCallbackAfter (FrameCallback *after)
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{
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FrameCallback *callback;
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callback = XLSafeMalloc (sizeof *callback);
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if (!callback)
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return callback;
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callback->next = after->next;
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callback->last = after;
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after->next->last = callback;
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after->next = callback;
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return callback;
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}
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static void
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UnlinkCallbacks (FrameCallback *start, FrameCallback *end)
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{
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/* First, make the list skip past END. */
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start->last->next = end->next;
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end->next->last = start->last;
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/* Then, unlink the list. */
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start->last = end;
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end->next = start;
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}
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static void
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RelinkCallbacksAfter (FrameCallback *start, FrameCallback *end,
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FrameCallback *dest)
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{
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end->next = dest->next;
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start->last = dest;
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dest->next->last = end;
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dest->next = start;
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}
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static void
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HandleCallbackResourceDestroy (struct wl_resource *resource)
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{
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FrameCallback *callback;
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callback = wl_resource_get_user_data (resource);
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UnlinkCallbacks (callback, callback);
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XLFree (callback);
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}
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static void
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FreeFrameCallbacks (FrameCallback *start)
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{
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FrameCallback *callback, *last;
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callback = start->next;
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while (callback != start)
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{
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last = callback;
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callback = callback->next;
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/* This will unlink last from its surroundings and free it. */
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wl_resource_destroy (last->resource);
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}
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}
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static void
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RunFrameCallbacks (FrameCallback *start, uint32_t time)
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{
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FrameCallback *callback, *last;
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callback = start->next;
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while (callback != start)
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{
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last = callback;
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callback = callback->next;
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wl_callback_send_done (last->resource, time);
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/* This will unlink last from its surroundings and free it. */
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wl_resource_destroy (last->resource);
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}
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}
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static void
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AttachBuffer (State *state, ExtBuffer *buffer)
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{
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if (state->buffer)
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XLDereferenceBuffer (state->buffer);
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state->buffer = buffer;
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XLRetainBuffer (buffer);
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}
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static void
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ClearBuffer (State *state)
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{
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if (!state->buffer)
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return;
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XLDereferenceBuffer (state->buffer);
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state->buffer = NULL;
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}
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static void
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DestroySurface (struct wl_client *client,
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struct wl_resource *resource)
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{
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wl_resource_destroy (resource);
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}
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static void
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Attach (struct wl_client *client, struct wl_resource *resource,
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struct wl_resource *buffer_resource, int32_t x, int32_t y)
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{
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Surface *surface;
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ExtBuffer *buffer;
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if (x != 0 && y != 0
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&& wl_resource_get_version (resource) >= 5)
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{
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wl_resource_post_error (resource, WL_SURFACE_ERROR_INVALID_OFFSET,
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"invalid offsets given to wl_surface_attach");
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return;
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}
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surface = wl_resource_get_user_data (resource);
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if (buffer_resource)
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{
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buffer = wl_resource_get_user_data (buffer_resource);
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AttachBuffer (&surface->pending_state, buffer);
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}
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else
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ClearBuffer (&surface->pending_state);
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surface->pending_state.x = x;
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surface->pending_state.y = y;
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surface->pending_state.pending |= PendingBuffer;
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surface->pending_state.pending |= PendingAttachments;
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}
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static void
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Offset (struct wl_client *client, struct wl_resource *resource,
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int32_t x, int32_t y)
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{
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Surface *surface;
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surface = wl_resource_get_user_data (resource);
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surface->pending_state.x = x;
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surface->pending_state.y = y;
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surface->pending_state.pending |= PendingAttachments;
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}
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static void
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Damage (struct wl_client *client, struct wl_resource *resource,
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int32_t x, int32_t y, int32_t width, int32_t height)
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{
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Surface *surface;
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surface = wl_resource_get_user_data (resource);
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/* Prevent integer overflow during later processing, since some
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clients really set the damage region to INT_MAX. */
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pixman_region32_union_rect (&surface->pending_state.surface,
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&surface->pending_state.surface,
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x, y, MIN (65535, width),
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MIN (65535, height));
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surface->pending_state.pending |= PendingSurfaceDamage;
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}
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static void
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Frame (struct wl_client *client, struct wl_resource *resource,
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uint32_t callback_id)
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{
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struct wl_resource *callback_resource;
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FrameCallback *callback;
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Surface *surface;
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surface = wl_resource_get_user_data (resource);
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callback = AddCallbackAfter (&surface->pending_state.frame_callbacks);
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if (!callback)
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{
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wl_client_post_no_memory (client);
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return;
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}
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callback_resource = wl_resource_create (client, &wl_callback_interface,
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1, callback_id);
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if (!callback_resource)
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{
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wl_client_post_no_memory (client);
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UnlinkCallbacks (callback, callback);
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XLFree (callback);
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return;
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}
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wl_resource_set_implementation (callback_resource, NULL,
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callback, HandleCallbackResourceDestroy);
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callback->resource = callback_resource;
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surface->pending_state.pending |= PendingFrameCallbacks;
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}
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static void
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SetOpaqueRegion (struct wl_client *client, struct wl_resource *resource,
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struct wl_resource *region_resource)
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{
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Surface *surface;
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pixman_region32_t *region;
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surface = wl_resource_get_user_data (resource);
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if (region_resource)
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{
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region = wl_resource_get_user_data (region_resource);
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/* Some ugly clients give the region ridiculous dimensions like
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0, 0, INT_MAX, INT_MAX, which causes overflows later on. So
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intersect it with the largest possible dimensions of a
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view. */
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pixman_region32_intersect_rect (&surface->pending_state.opaque,
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region, 0, 0, 65535, 65535);
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}
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else
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pixman_region32_clear (&surface->pending_state.opaque);
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surface->pending_state.pending |= PendingOpaqueRegion;
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}
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static void
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SetInputRegion (struct wl_client *client, struct wl_resource *resource,
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struct wl_resource *region_resource)
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{
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Surface *surface;
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pixman_region32_t *region;
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surface = wl_resource_get_user_data (resource);
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if (region_resource)
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{
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region = wl_resource_get_user_data (region_resource);
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/* Some ugly clients give the region ridiculous dimensions like
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0, 0, INT_MAX, INT_MAX, which causes overflows later on. So
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intersect it with the largest possible dimensions of a
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view. */
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pixman_region32_intersect_rect (&surface->pending_state.input,
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region, 0, 0, 65535, 65535);
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}
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else
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{
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pixman_region32_clear (&surface->pending_state.input);
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pixman_region32_union_rect (&surface->pending_state.input,
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&surface->pending_state.input,
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0, 0, 65535, 65535);
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}
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surface->pending_state.pending |= PendingInputRegion;
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}
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void
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XLDefaultCommit (Surface *surface)
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{
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/* Nothing has to be done here yet. */
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}
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static void
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ApplyBuffer (Surface *surface)
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{
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if (surface->current_state.buffer)
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ViewAttachBuffer (surface->view, surface->current_state.buffer);
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else
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ViewDetach (surface->view);
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}
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/* Return the effective scale.
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The effective scale is a value by which to scale down the contents
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of a surface on display. */
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static int
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GetEffectiveScale (int scale)
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{
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/* A "scale" is how many times to scale _down_ a surface, not up.
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Negative values mean to scale the surface up instead of down. */
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scale = scale - global_scale_factor;
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return scale;
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}
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static void
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ApplyScale (Surface *surface)
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{
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int scale, effective;
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scale = surface->current_state.buffer_scale;
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effective = GetEffectiveScale (scale);
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ViewSetScale (surface->view, effective);
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}
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static void
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ApplyOpaqueRegion (Surface *surface)
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{
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pixman_region32_t temp;
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/* These regions, along with the global damage, must be multipled by
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the global scale factor. */
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if (global_scale_factor == 1)
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ViewSetOpaque (surface->view,
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&surface->current_state.opaque);
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else
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{
|
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pixman_region32_init (&temp);
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||
XLScaleRegion (&temp, &surface->current_state.opaque,
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global_scale_factor, global_scale_factor);
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ViewSetOpaque (surface->view, &temp);
|
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pixman_region32_fini (&temp);
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}
|
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}
|
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|
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static void
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||
ApplyInputRegion (Surface *surface)
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{
|
||
pixman_region32_t temp;
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||
|
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/* These regions, along with the global damage, must be multipled by
|
||
the global scale factor. */
|
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if (global_scale_factor == 1)
|
||
ViewSetInput (surface->view,
|
||
&surface->current_state.input);
|
||
else
|
||
{
|
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pixman_region32_init (&temp);
|
||
XLScaleRegion (&temp, &surface->current_state.input,
|
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global_scale_factor, global_scale_factor);
|
||
ViewSetInput (surface->view, &temp);
|
||
pixman_region32_fini (&temp);
|
||
}
|
||
}
|
||
|
||
static void
|
||
HandleScaleChanged (void *data, int new_scale)
|
||
{
|
||
Surface *surface;
|
||
Subcompositor *subcompositor;
|
||
|
||
surface = data;
|
||
|
||
/* First, reapply various regions that depend on the surface
|
||
scale. */
|
||
ApplyInputRegion (surface);
|
||
ApplyOpaqueRegion (surface);
|
||
ApplyScale (surface);
|
||
|
||
/* Next, call any role-specific hooks. */
|
||
if (surface->role && surface->role->funcs.rescale)
|
||
surface->role->funcs.rescale (surface, surface->role);
|
||
|
||
/* Then, redisplay the view if a subcompositor is already
|
||
attached. */
|
||
subcompositor = ViewGetSubcompositor (surface->view);
|
||
|
||
if (subcompositor)
|
||
{
|
||
/* When updating stuff out-of-band, a subframe must be started
|
||
around the update. */
|
||
|
||
if (surface->role && surface->role->funcs.subframe
|
||
&& surface->role->funcs.subframe (surface, surface->role))
|
||
{
|
||
SubcompositorUpdate (subcompositor);
|
||
|
||
if (surface->role && surface->role->funcs.end_subframe)
|
||
surface->role->funcs.end_subframe (surface, surface->role);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
ApplyDamage (Surface *surface)
|
||
{
|
||
pixman_region32_t temp;
|
||
int scale;
|
||
|
||
scale = GetEffectiveScale (surface->current_state.buffer_scale);
|
||
|
||
/* N.B. that this must come after the scale is applied. */
|
||
|
||
if (scale)
|
||
{
|
||
pixman_region32_init (&temp);
|
||
|
||
if (scale > 0)
|
||
XLScaleRegion (&temp, &surface->current_state.damage,
|
||
1.0 / (scale + 1), 1.0 / (scale + 1));
|
||
else
|
||
XLScaleRegion (&temp, &surface->current_state.damage,
|
||
abs (scale) + 1, abs (scale) + 1);
|
||
|
||
ViewDamage (surface->view, &temp);
|
||
|
||
pixman_region32_fini (&temp);
|
||
}
|
||
else
|
||
ViewDamage (surface->view,
|
||
&surface->current_state.damage);
|
||
}
|
||
|
||
static void
|
||
ApplySurfaceDamage (Surface *surface)
|
||
{
|
||
pixman_region32_t temp;
|
||
|
||
/* These regions, along with the global damage, must be multipled by
|
||
the global scale factor. */
|
||
|
||
if (global_scale_factor == 1)
|
||
ViewDamage (surface->view,
|
||
&surface->current_state.surface);
|
||
else
|
||
{
|
||
pixman_region32_init (&temp);
|
||
XLScaleRegion (&temp, &surface->current_state.surface,
|
||
global_scale_factor, global_scale_factor);
|
||
ViewDamage (surface->view, &temp);
|
||
pixman_region32_fini (&temp);
|
||
}
|
||
}
|
||
|
||
static void
|
||
SavePendingState (Surface *surface)
|
||
{
|
||
FrameCallback *start, *end;
|
||
|
||
/* Save pending state to cached state. Release any buffer
|
||
previously in the cached state. */
|
||
|
||
if (surface->pending_state.pending & PendingBuffer)
|
||
{
|
||
if (surface->cached_state.buffer
|
||
&& (surface->pending_state.buffer
|
||
!= surface->cached_state.buffer)
|
||
/* If the cached buffer has already been applied, releasing
|
||
it is a mistake! */
|
||
&& (surface->cached_state.buffer
|
||
!= surface->current_state.buffer))
|
||
{
|
||
if (surface->role)
|
||
surface->role->funcs.release_buffer (surface, surface->role,
|
||
surface->cached_state.buffer);
|
||
else
|
||
XLReleaseBuffer (surface->cached_state.buffer);
|
||
}
|
||
|
||
if (surface->pending_state.buffer)
|
||
{
|
||
AttachBuffer (&surface->cached_state,
|
||
surface->pending_state.buffer);
|
||
ClearBuffer (&surface->pending_state);
|
||
}
|
||
else
|
||
ClearBuffer (&surface->cached_state);
|
||
}
|
||
|
||
if (surface->pending_state.pending & PendingInputRegion)
|
||
pixman_region32_copy (&surface->cached_state.input,
|
||
&surface->pending_state.input);
|
||
|
||
if (surface->pending_state.pending & PendingOpaqueRegion)
|
||
pixman_region32_copy (&surface->cached_state.opaque,
|
||
&surface->pending_state.opaque);
|
||
|
||
if (surface->pending_state.pending & PendingBufferScale)
|
||
surface->cached_state.buffer_scale
|
||
= surface->pending_state.buffer_scale;
|
||
|
||
if (surface->pending_state.pending & PendingAttachments)
|
||
{
|
||
surface->cached_state.x = surface->pending_state.x;
|
||
surface->cached_state.y = surface->pending_state.y;
|
||
}
|
||
|
||
if (surface->pending_state.pending & PendingDamage)
|
||
{
|
||
pixman_region32_union (&surface->cached_state.damage,
|
||
&surface->cached_state.damage,
|
||
&surface->pending_state.damage);
|
||
pixman_region32_clear (&surface->pending_state.damage);
|
||
}
|
||
|
||
if (surface->pending_state.pending & PendingSurfaceDamage)
|
||
{
|
||
pixman_region32_union (&surface->cached_state.surface,
|
||
&surface->cached_state.surface,
|
||
&surface->pending_state.surface);
|
||
pixman_region32_clear (&surface->pending_state.surface);
|
||
}
|
||
|
||
if (surface->pending_state.pending & PendingFrameCallbacks
|
||
&& (surface->pending_state.frame_callbacks.next
|
||
!= &surface->pending_state.frame_callbacks))
|
||
{
|
||
start = surface->pending_state.frame_callbacks.next;
|
||
end = surface->pending_state.frame_callbacks.last;
|
||
|
||
UnlinkCallbacks (start, end);
|
||
RelinkCallbacksAfter (start, end,
|
||
&surface->cached_state.frame_callbacks);
|
||
}
|
||
|
||
surface->cached_state.pending |= surface->pending_state.pending;
|
||
surface->pending_state.pending = PendingNone;
|
||
}
|
||
|
||
static void
|
||
InternalCommit (Surface *surface, State *pending)
|
||
{
|
||
FrameCallback *start, *end;
|
||
|
||
if (pending->pending & PendingBuffer)
|
||
{
|
||
if ((surface->current_state.buffer != pending->buffer)
|
||
&& surface->current_state.buffer)
|
||
{
|
||
if (surface->role)
|
||
surface->role->funcs.release_buffer (surface, surface->role,
|
||
surface->current_state.buffer);
|
||
else
|
||
XLReleaseBuffer (surface->current_state.buffer);
|
||
}
|
||
|
||
if (pending->buffer)
|
||
{
|
||
AttachBuffer (&surface->current_state,
|
||
pending->buffer);
|
||
ApplyBuffer (surface);
|
||
ClearBuffer (pending);
|
||
}
|
||
else
|
||
{
|
||
ClearBuffer (&surface->current_state);
|
||
ApplyBuffer (surface);
|
||
ClearBuffer (pending);
|
||
}
|
||
}
|
||
|
||
if (pending->pending & PendingInputRegion)
|
||
{
|
||
pixman_region32_copy (&surface->current_state.input,
|
||
&pending->input);
|
||
ApplyInputRegion (surface);
|
||
}
|
||
|
||
if (pending->pending & PendingOpaqueRegion)
|
||
{
|
||
pixman_region32_copy (&surface->current_state.opaque,
|
||
&pending->opaque);
|
||
ApplyOpaqueRegion (surface);
|
||
}
|
||
|
||
if (pending->pending & PendingBufferScale)
|
||
{
|
||
surface->current_state.buffer_scale = pending->buffer_scale;
|
||
ApplyScale (surface);
|
||
}
|
||
|
||
if (pending->pending & PendingAttachments)
|
||
{
|
||
surface->current_state.x = pending->x;
|
||
surface->current_state.y = pending->y;
|
||
}
|
||
|
||
if (pending->pending & PendingDamage)
|
||
{
|
||
pixman_region32_copy (&surface->current_state.damage,
|
||
&pending->damage);
|
||
pixman_region32_clear (&pending->damage);
|
||
|
||
ApplyDamage (surface);
|
||
}
|
||
|
||
if (pending->pending & PendingSurfaceDamage)
|
||
{
|
||
pixman_region32_copy (&surface->current_state.surface,
|
||
&pending->surface);
|
||
pixman_region32_clear (&pending->surface);
|
||
|
||
ApplySurfaceDamage (surface);
|
||
}
|
||
|
||
if (pending->pending & PendingFrameCallbacks)
|
||
{
|
||
/* Insert the pending frame callbacks in front of the current
|
||
ones. */
|
||
|
||
if (pending->frame_callbacks.next != &pending->frame_callbacks)
|
||
{
|
||
start = pending->frame_callbacks.next;
|
||
end = pending->frame_callbacks.last;
|
||
|
||
UnlinkCallbacks (start, end);
|
||
RelinkCallbacksAfter (start, end,
|
||
&surface->current_state.frame_callbacks);
|
||
}
|
||
}
|
||
|
||
RunCommitCallbacks (surface);
|
||
|
||
if (surface->subsurfaces)
|
||
/* Pending surface stacking actions are stored on the parent so
|
||
they run in the right order. */
|
||
XLSubsurfaceHandleParentCommit (surface);
|
||
|
||
if (!surface->role)
|
||
{
|
||
XLDefaultCommit (surface);
|
||
pending->pending = PendingNone;
|
||
|
||
return;
|
||
}
|
||
|
||
surface->role->funcs.commit (surface, surface->role);
|
||
pending->pending = PendingNone;
|
||
}
|
||
|
||
static void
|
||
Commit (struct wl_client *client, struct wl_resource *resource)
|
||
{
|
||
Surface *surface;
|
||
|
||
surface = wl_resource_get_user_data (resource);
|
||
|
||
if (surface->role && surface->role->funcs.early_commit
|
||
/* The role chose to postpone the commit for a later time. */
|
||
&& !surface->role->funcs.early_commit (surface, surface->role))
|
||
{
|
||
/* So save the state for the role to commit later. */
|
||
SavePendingState (surface);
|
||
return;
|
||
}
|
||
|
||
InternalCommit (surface, &surface->pending_state);
|
||
}
|
||
|
||
static void
|
||
SetBufferTransform (struct wl_client *client, struct wl_resource *resource,
|
||
int32_t transform)
|
||
{
|
||
if (transform != WL_OUTPUT_TRANSFORM_NORMAL)
|
||
wl_resource_post_error (resource, WL_DISPLAY_ERROR_IMPLEMENTATION,
|
||
"this compositor does not support buffer transforms");
|
||
}
|
||
|
||
static void
|
||
SetBufferScale (struct wl_client *client, struct wl_resource *resource,
|
||
int32_t scale)
|
||
{
|
||
Surface *surface;
|
||
|
||
if (scale <= 0)
|
||
{
|
||
wl_resource_post_error (resource, WL_SURFACE_ERROR_INVALID_SCALE,
|
||
"invalid scale: %d", scale);
|
||
return;
|
||
}
|
||
|
||
surface = wl_resource_get_user_data (resource);
|
||
|
||
surface->pending_state.buffer_scale = scale;
|
||
surface->pending_state.pending |= PendingBufferScale;
|
||
}
|
||
|
||
static void
|
||
DamageBuffer (struct wl_client *client, struct wl_resource *resource,
|
||
int32_t x, int32_t y, int32_t width, int32_t height)
|
||
{
|
||
Surface *surface;
|
||
|
||
surface = wl_resource_get_user_data (resource);
|
||
|
||
/* Prevent integer overflow during later processing, since some
|
||
clients really set the damage region to INT_MAX. */
|
||
|
||
pixman_region32_union_rect (&surface->pending_state.damage,
|
||
&surface->pending_state.damage,
|
||
x, y, MIN (65535, width),
|
||
MIN (65535, height));
|
||
|
||
surface->pending_state.pending |= PendingDamage;
|
||
}
|
||
|
||
static const struct wl_surface_interface wl_surface_impl =
|
||
{
|
||
.destroy = DestroySurface,
|
||
.attach = Attach,
|
||
.damage = Damage,
|
||
.frame = Frame,
|
||
.set_opaque_region = SetOpaqueRegion,
|
||
.set_input_region = SetInputRegion,
|
||
.commit = Commit,
|
||
.set_buffer_transform = SetBufferTransform,
|
||
.set_buffer_scale = SetBufferScale,
|
||
.damage_buffer = DamageBuffer,
|
||
.offset = Offset,
|
||
};
|
||
|
||
static void
|
||
InitState (State *state)
|
||
{
|
||
pixman_region32_init (&state->damage);
|
||
pixman_region32_init (&state->opaque);
|
||
pixman_region32_init (&state->surface);
|
||
|
||
/* The initial state of the input region is always infinite. */
|
||
pixman_region32_init_rect (&state->input, 0, 0,
|
||
65535, 65535);
|
||
|
||
state->pending = PendingNone;
|
||
state->buffer = NULL;
|
||
state->buffer_scale = 1;
|
||
|
||
/* Initialize the sentinel node. */
|
||
state->frame_callbacks.next = &state->frame_callbacks;
|
||
state->frame_callbacks.last = &state->frame_callbacks;
|
||
state->frame_callbacks.resource = NULL;
|
||
}
|
||
|
||
static void
|
||
FinalizeState (State *state)
|
||
{
|
||
pixman_region32_fini (&state->damage);
|
||
pixman_region32_fini (&state->opaque);
|
||
pixman_region32_fini (&state->surface);
|
||
pixman_region32_fini (&state->input);
|
||
|
||
if (state->buffer)
|
||
XLDereferenceBuffer (state->buffer);
|
||
state->buffer = NULL;
|
||
|
||
/* Destroy any callbacks that might be remaining. */
|
||
FreeFrameCallbacks (&state->frame_callbacks);
|
||
}
|
||
|
||
static void
|
||
NotifySubsurfaceDestroyed (void *data)
|
||
{
|
||
Surface *surface;
|
||
|
||
surface = data;
|
||
|
||
if (surface->role)
|
||
XLSubsurfaceParentDestroyed (surface->role);
|
||
}
|
||
|
||
static void
|
||
HandleSurfaceDestroy (struct wl_resource *resource)
|
||
{
|
||
Surface *surface;
|
||
int i;
|
||
|
||
surface = wl_resource_get_user_data (resource);
|
||
|
||
if (surface->role)
|
||
XLSurfaceReleaseRole (surface, surface->role);
|
||
|
||
/* Keep surface->resource around until the role is released; some
|
||
code (such as dnd.c) assumes that surface->resource will always
|
||
be available in unmap callbacks. */
|
||
surface->resource = NULL;
|
||
|
||
/* First, free all subsurfaces. */
|
||
XLListFree (surface->subsurfaces,
|
||
NotifySubsurfaceDestroyed);
|
||
|
||
/* Then release all client data. */
|
||
for (i = 0; i < MaxClientData; ++i)
|
||
{
|
||
if (surface->client_data[i])
|
||
surface->free_client_data[i] (surface->client_data[i]);
|
||
XLFree (surface->client_data[i]);
|
||
|
||
surface->client_data[i] = NULL;
|
||
}
|
||
|
||
/* Release the output region. */
|
||
pixman_region32_fini (&surface->output_region);
|
||
|
||
/* Next, free the views. */
|
||
ViewFree (surface->view);
|
||
ViewFree (surface->under);
|
||
|
||
/* Then, unlink the surface from the list of all surfaces. */
|
||
surface->next->last = surface->last;
|
||
surface->last->next = surface->next;
|
||
|
||
/* Free outputs. */
|
||
XLFree (surface->outputs);
|
||
|
||
/* Free the window scaling factor callback. */
|
||
XLRemoveScaleChangeCallback (surface->scale_callback_key);
|
||
|
||
FinalizeState (&surface->pending_state);
|
||
FinalizeState (&surface->current_state);
|
||
FinalizeState (&surface->cached_state);
|
||
FreeCommitCallbacks (&surface->commit_callbacks);
|
||
FreeUnmapCallbacks (&surface->unmap_callbacks);
|
||
FreeDestroyCallbacks (&surface->destroy_callbacks);
|
||
XLFree (surface);
|
||
}
|
||
|
||
void
|
||
XLCreateSurface (struct wl_client *client,
|
||
struct wl_resource *resource,
|
||
uint32_t id)
|
||
{
|
||
Surface *surface;
|
||
|
||
surface = XLSafeMalloc (sizeof *surface);
|
||
|
||
if (!surface)
|
||
{
|
||
wl_resource_post_no_memory (resource);
|
||
return;
|
||
}
|
||
|
||
memset (surface, 0, sizeof *surface);
|
||
surface->resource
|
||
= wl_resource_create (client, &wl_surface_interface,
|
||
wl_resource_get_version (resource),
|
||
id);
|
||
|
||
if (!surface->resource)
|
||
{
|
||
wl_resource_post_no_memory (resource);
|
||
XLFree (surface);
|
||
return;
|
||
}
|
||
|
||
wl_resource_set_implementation (surface->resource, &wl_surface_impl,
|
||
surface, HandleSurfaceDestroy);
|
||
|
||
surface->role = NULL;
|
||
surface->view = MakeView ();
|
||
surface->under = MakeView ();
|
||
surface->subsurfaces = NULL;
|
||
|
||
/* Make it so that seat.c can associate the surface with the
|
||
view. */
|
||
ViewSetData (surface->view, surface);
|
||
|
||
/* Initialize the sentinel node for the commit callback list. */
|
||
surface->commit_callbacks.last = &surface->commit_callbacks;
|
||
surface->commit_callbacks.next = &surface->commit_callbacks;
|
||
surface->commit_callbacks.commit = NULL;
|
||
surface->commit_callbacks.data = NULL;
|
||
|
||
/* And the sentinel node for the unmap callback list. */
|
||
surface->unmap_callbacks.last = &surface->unmap_callbacks;
|
||
surface->unmap_callbacks.next = &surface->unmap_callbacks;
|
||
surface->unmap_callbacks.unmap = NULL;
|
||
surface->unmap_callbacks.data = NULL;
|
||
|
||
/* And the sentinel node for the destroy callback list. */
|
||
surface->destroy_callbacks.last = &surface->destroy_callbacks;
|
||
surface->destroy_callbacks.next = &surface->destroy_callbacks;
|
||
surface->destroy_callbacks.destroy_func = NULL;
|
||
surface->destroy_callbacks.data = NULL;
|
||
|
||
InitState (&surface->pending_state);
|
||
InitState (&surface->current_state);
|
||
InitState (&surface->cached_state);
|
||
|
||
/* Now the default input has been initialized, so apply it to the
|
||
view. */
|
||
ApplyInputRegion (surface);
|
||
|
||
/* Likewise for the scale. */
|
||
ApplyScale (surface);
|
||
|
||
/* Initially, allow surfaces to accept any kind of role. */
|
||
surface->role_type = AnythingType;
|
||
|
||
/* Initialize the output region. */
|
||
pixman_region32_init (&surface->output_region);
|
||
|
||
/* Link the surface onto the list of all surfaces. */
|
||
surface->next = all_surfaces.next;
|
||
surface->last = &all_surfaces;
|
||
all_surfaces.next->last = surface;
|
||
all_surfaces.next = surface;
|
||
|
||
/* Also add the scale change callback. */
|
||
surface->scale_callback_key
|
||
= XLAddScaleChangeCallback (surface, HandleScaleChanged);
|
||
|
||
/* Clear surface output coordinates. */
|
||
surface->output_x = INT_MIN;
|
||
surface->output_y = INT_MIN;
|
||
}
|
||
|
||
void
|
||
XLInitSurfaces (void)
|
||
{
|
||
all_surfaces.next = &all_surfaces;
|
||
all_surfaces.last = &all_surfaces;
|
||
}
|
||
|
||
|
||
/* Role management: XDG shells, wl_shells, et cetera. */
|
||
|
||
Bool
|
||
XLSurfaceAttachRole (Surface *surface, Role *role)
|
||
{
|
||
if (surface->role)
|
||
return False;
|
||
|
||
if (!role->funcs.setup (surface, role))
|
||
return False;
|
||
|
||
surface->role = role;
|
||
|
||
return True;
|
||
}
|
||
|
||
void
|
||
XLSurfaceReleaseRole (Surface *surface, Role *role)
|
||
{
|
||
role->funcs.teardown (surface, role);
|
||
|
||
if (surface->resource)
|
||
/* Now that the surface is unmapped, leave every output it
|
||
previously entered. */
|
||
XLClearOutputs (surface);
|
||
|
||
surface->role = NULL;
|
||
surface->output_x = INT_MIN;
|
||
surface->output_y = INT_MIN;
|
||
RunUnmapCallbacks (surface);
|
||
}
|
||
|
||
void
|
||
XLStateAttachBuffer (State *state, ExtBuffer *buffer)
|
||
{
|
||
AttachBuffer (state, buffer);
|
||
}
|
||
|
||
void
|
||
XLStateDetachBuffer (State *state)
|
||
{
|
||
ClearBuffer (state);
|
||
}
|
||
|
||
|
||
/* Various other functions exported for roles. */
|
||
|
||
void
|
||
XLSurfaceRunFrameCallbacks (Surface *surface, struct timespec time)
|
||
{
|
||
uint32_t ms_time;
|
||
XLList *list;
|
||
|
||
ms_time = time.tv_sec * 1000 + time.tv_nsec / 1000000;
|
||
|
||
RunFrameCallbacks (&surface->current_state.frame_callbacks,
|
||
ms_time);
|
||
|
||
/* Run frame callbacks for each attached subsurface as well. */
|
||
for (list = surface->subsurfaces; list; list = list->next)
|
||
XLSurfaceRunFrameCallbacks (list->data, time);
|
||
}
|
||
|
||
CommitCallback *
|
||
XLSurfaceRunAtCommit (Surface *surface,
|
||
void (*commit_func) (Surface *, void *),
|
||
void *data)
|
||
{
|
||
CommitCallback *callback;
|
||
|
||
callback = AddCommitCallbackAfter (&surface->commit_callbacks);
|
||
callback->commit = commit_func;
|
||
callback->data = data;
|
||
|
||
return callback;
|
||
}
|
||
|
||
void
|
||
XLSurfaceCancelCommitCallback (CommitCallback *callback)
|
||
{
|
||
UnlinkCommitCallback (callback);
|
||
|
||
XLFree (callback);
|
||
}
|
||
|
||
UnmapCallback *
|
||
XLSurfaceRunAtUnmap (Surface *surface,
|
||
void (*unmap_func) (void *),
|
||
void *data)
|
||
{
|
||
UnmapCallback *callback;
|
||
|
||
callback = AddUnmapCallbackAfter (&surface->unmap_callbacks);
|
||
callback->unmap = unmap_func;
|
||
callback->data = data;
|
||
|
||
return callback;
|
||
}
|
||
|
||
void
|
||
XLSurfaceCancelUnmapCallback (UnmapCallback *callback)
|
||
{
|
||
UnlinkUnmapCallback (callback);
|
||
|
||
XLFree (callback);
|
||
}
|
||
|
||
void
|
||
XLCommitSurface (Surface *surface, Bool use_pending)
|
||
{
|
||
InternalCommit (surface, (use_pending
|
||
? &surface->pending_state
|
||
: &surface->cached_state));
|
||
}
|
||
|
||
DestroyCallback *
|
||
XLSurfaceRunOnFree (Surface *surface, void (*destroy_func) (void *),
|
||
void *data)
|
||
{
|
||
DestroyCallback *callback;
|
||
|
||
callback = AddDestroyCallbackAfter (&surface->destroy_callbacks);
|
||
callback->destroy_func = destroy_func;
|
||
callback->data = data;
|
||
|
||
return callback;
|
||
}
|
||
|
||
void
|
||
XLSurfaceCancelRunOnFree (DestroyCallback *callback)
|
||
{
|
||
UnlinkDestroyCallback (callback);
|
||
|
||
XLFree (callback);
|
||
}
|
||
|
||
void *
|
||
XLSurfaceGetClientData (Surface *surface, ClientDataType type,
|
||
size_t size, void (*free_func) (void *))
|
||
{
|
||
if (surface->client_data[type])
|
||
return surface->client_data[type];
|
||
|
||
surface->client_data[type] = XLCalloc (1, size);
|
||
surface->free_client_data[type] = free_func;
|
||
|
||
return surface->client_data[type];
|
||
}
|
||
|
||
Window
|
||
XLWindowFromSurface (Surface *surface)
|
||
{
|
||
if (!surface->role
|
||
|| !surface->role->funcs.get_window (surface,
|
||
surface->role))
|
||
return None;
|
||
|
||
return surface->role->funcs.get_window (surface,
|
||
surface->role);
|
||
}
|
||
|
||
Bool
|
||
XLSurfaceGetResizeDimensions (Surface *surface, int *width, int *height)
|
||
{
|
||
if (!surface->role
|
||
|| !surface->role->funcs.get_resize_dimensions)
|
||
return False;
|
||
|
||
surface->role->funcs.get_resize_dimensions (surface, surface->role,
|
||
width, height);
|
||
return True;
|
||
}
|
||
|
||
void
|
||
XLSurfacePostResize (Surface *surface, int west_motion, int north_motion,
|
||
int new_width, int new_height)
|
||
{
|
||
if (!surface->role
|
||
|| !surface->role->funcs.post_resize)
|
||
return;
|
||
|
||
surface->role->funcs.post_resize (surface, surface->role,
|
||
west_motion, north_motion,
|
||
new_width, new_height);
|
||
return;
|
||
}
|
||
|
||
void
|
||
XLSurfaceMoveBy (Surface *surface, int west, int north)
|
||
{
|
||
if (!surface->role
|
||
|| !surface->role->funcs.move_by)
|
||
return;
|
||
|
||
surface->role->funcs.move_by (surface, surface->role,
|
||
west, north);
|
||
}
|