mirror of
https://github.com/brl/mutter.git
synced 2025-07-03 01:32:11 +00:00
Split out the code that renders the code into a MetaCursorRenderer
Right now, this is the same exact same mess it's always been, but it will be fixed up soon with backend-specific renderers.
This commit is contained in:
Jasper St. Pierre
393
src/backends/meta-cursor-renderer.c
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393
src/backends/meta-cursor-renderer.c
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@ -0,0 +1,393 @@
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2014 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jasper St. Pierre <jstpierre@mecheye.net>
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*/
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#include "config.h"
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#include "meta-cursor-renderer.h"
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#include "meta-cursor-private.h"
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#include <cogl/cogl.h>
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#include <cogl/cogl-wayland-server.h>
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#include <clutter/clutter.h>
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#include <gbm.h>
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#include "meta-monitor-manager.h"
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#include "wayland/meta-wayland-private.h"
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struct _MetaCursorRendererPrivate
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{
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MetaScreen *screen;
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gboolean has_hw_cursor;
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int current_x, current_y;
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MetaRectangle current_rect;
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MetaRectangle previous_rect;
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gboolean previous_is_valid;
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CoglPipeline *pipeline;
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int drm_fd;
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struct gbm_device *gbm;
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MetaCursorReference *displayed_cursor;
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};
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typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
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G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRenderer, meta_cursor_renderer, G_TYPE_OBJECT);
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static void
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set_crtc_has_hw_cursor (MetaCursorRenderer *renderer,
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MetaCRTC *crtc,
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gboolean has)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (has)
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{
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MetaCursorReference *displayed_cursor = priv->displayed_cursor;
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struct gbm_bo *bo;
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union gbm_bo_handle handle;
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int width, height;
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int hot_x, hot_y;
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bo = meta_cursor_reference_get_gbm_bo (displayed_cursor, &hot_x, &hot_y);
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handle = gbm_bo_get_handle (bo);
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width = gbm_bo_get_width (bo);
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height = gbm_bo_get_height (bo);
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drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, handle.u32,
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width, height, hot_x, hot_y);
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crtc->has_hw_cursor = TRUE;
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}
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else
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{
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drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, 0, 0, 0, 0, 0);
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crtc->has_hw_cursor = FALSE;
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}
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}
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static void
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on_monitors_changed (MetaMonitorManager *monitors,
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MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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MetaCRTC *crtcs;
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unsigned int i, n_crtcs;
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if (!priv->has_hw_cursor)
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return;
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/* Go through the new list of monitors, find out where the cursor is */
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meta_monitor_manager_get_resources (monitors, NULL, NULL, &crtcs, &n_crtcs, NULL, NULL);
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for (i = 0; i < n_crtcs; i++)
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{
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MetaRectangle *rect = &crtcs[i].rect;
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gboolean has;
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has = meta_rectangle_overlap (&priv->current_rect, rect);
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/* Need to do it unconditionally here, our tracking is
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wrong because we reloaded the CRTCs */
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set_crtc_has_hw_cursor (renderer, &crtcs[i], has);
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}
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}
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static void
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meta_cursor_renderer_finalize (GObject *object)
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{
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MetaCursorRenderer *renderer = META_CURSOR_RENDERER (object);
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (priv->pipeline)
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cogl_object_unref (priv->pipeline);
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if (priv->gbm)
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gbm_device_destroy (priv->gbm);
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G_OBJECT_CLASS (meta_cursor_renderer_parent_class)->finalize (object);
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}
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static void
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meta_cursor_renderer_class_init (MetaCursorRendererClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = meta_cursor_renderer_finalize;
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}
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static void
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meta_cursor_renderer_init (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
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MetaMonitorManager *monitors;
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monitors = meta_monitor_manager_get ();
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g_signal_connect_object (monitors, "monitors-changed",
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G_CALLBACK (on_monitors_changed), renderer, 0);
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priv->pipeline = cogl_pipeline_new (ctx);
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#if defined(CLUTTER_WINDOWING_EGL)
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if (clutter_check_windowing_backend (CLUTTER_WINDOWING_EGL))
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{
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CoglRenderer *cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (ctx));
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priv->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
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priv->gbm = gbm_create_device (priv->drm_fd);
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}
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#endif
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}
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static gboolean
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should_have_hw_cursor (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (priv->displayed_cursor)
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return (meta_cursor_reference_get_gbm_bo (priv->displayed_cursor, NULL, NULL) != NULL);
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else
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return FALSE;
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}
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static void
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update_hw_cursor (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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MetaMonitorManager *monitors;
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MetaCRTC *crtcs;
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unsigned int i, n_crtcs;
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gboolean enabled;
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enabled = should_have_hw_cursor (renderer);
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priv->has_hw_cursor = enabled;
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monitors = meta_monitor_manager_get ();
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meta_monitor_manager_get_resources (monitors, NULL, NULL, &crtcs, &n_crtcs, NULL, NULL);
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for (i = 0; i < n_crtcs; i++)
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{
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MetaRectangle *rect = &crtcs[i].rect;
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gboolean has;
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has = enabled && meta_rectangle_overlap (&priv->current_rect, rect);
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if (has || crtcs[i].has_hw_cursor)
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set_crtc_has_hw_cursor (renderer, &crtcs[i], has);
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}
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}
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static void
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move_hw_cursor (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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MetaMonitorManager *monitors;
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MetaCRTC *crtcs;
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unsigned int i, n_crtcs;
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monitors = meta_monitor_manager_get ();
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meta_monitor_manager_get_resources (monitors, NULL, NULL, &crtcs, &n_crtcs, NULL, NULL);
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g_assert (priv->has_hw_cursor);
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for (i = 0; i < n_crtcs; i++)
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{
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MetaRectangle *rect = &crtcs[i].rect;
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gboolean has;
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has = meta_rectangle_overlap (&priv->current_rect, rect);
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if (has != crtcs[i].has_hw_cursor)
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set_crtc_has_hw_cursor (renderer, &crtcs[i], has);
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if (has)
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drmModeMoveCursor (priv->drm_fd, crtcs[i].crtc_id,
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priv->current_rect.x - rect->x,
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priv->current_rect.y - rect->y);
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}
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}
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static void
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queue_redraw (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
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ClutterActor *stage = compositor->stage;
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cairo_rectangle_int_t clip;
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g_assert (meta_is_wayland_compositor ());
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/* Clear the location the cursor was at before, if we need to. */
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if (priv->previous_is_valid)
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{
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clip.x = priv->previous_rect.x;
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clip.y = priv->previous_rect.y;
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clip.width = priv->previous_rect.width;
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clip.height = priv->previous_rect.height;
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clutter_actor_queue_redraw_with_clip (stage, &clip);
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priv->previous_is_valid = FALSE;
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}
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if (priv->has_hw_cursor || !priv->displayed_cursor)
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return;
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clip.x = priv->current_rect.x;
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clip.y = priv->current_rect.y;
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clip.width = priv->current_rect.width;
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clip.height = priv->current_rect.height;
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clutter_actor_queue_redraw_with_clip (stage, &clip);
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}
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static void
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update_cursor (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (priv->displayed_cursor)
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{
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CoglTexture *texture;
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int hot_x, hot_y;
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texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, &hot_x, &hot_y);
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priv->current_rect.x = priv->current_x - hot_x;
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priv->current_rect.y = priv->current_y - hot_y;
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priv->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (texture));
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priv->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (texture));
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}
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else
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{
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priv->current_rect.x = 0;
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priv->current_rect.y = 0;
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priv->current_rect.width = 0;
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priv->current_rect.height = 0;
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}
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if (meta_is_wayland_compositor ())
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{
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if (priv->has_hw_cursor)
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move_hw_cursor (renderer);
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else
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queue_redraw (renderer);
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}
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}
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static void
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update_pipeline (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (meta_is_wayland_compositor ())
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{
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if (priv->displayed_cursor)
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{
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CoglTexture *texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, NULL, NULL);
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cogl_pipeline_set_layer_texture (priv->pipeline, 0, texture);
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}
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else
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cogl_pipeline_set_layer_texture (priv->pipeline, 0, NULL);
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update_hw_cursor (renderer);
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}
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}
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MetaCursorRenderer *
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meta_cursor_renderer_new (MetaScreen *screen)
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{
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MetaCursorRenderer *renderer;
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MetaCursorRendererPrivate *priv;
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renderer = META_CURSOR_RENDERER (g_object_new (META_TYPE_CURSOR_RENDERER, NULL));
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priv = meta_cursor_renderer_get_instance_private (renderer);
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priv->screen = screen;
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return renderer;
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}
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void
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meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
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MetaCursorReference *cursor)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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if (priv->displayed_cursor == cursor)
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return;
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priv->displayed_cursor = cursor;
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update_pipeline (renderer);
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update_cursor (renderer);
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}
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void
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meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
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int x, int y)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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g_assert (meta_is_wayland_compositor ());
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priv->current_x = x;
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priv->current_y = y;
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update_cursor (renderer);
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}
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void
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meta_cursor_renderer_paint (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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g_assert (meta_is_wayland_compositor ());
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if (priv->has_hw_cursor || !priv->displayed_cursor)
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return;
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cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
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priv->pipeline,
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priv->current_rect.x,
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priv->current_rect.y,
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priv->current_rect.x +
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priv->current_rect.width,
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priv->current_rect.y +
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priv->current_rect.height);
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priv->previous_rect = priv->current_rect;
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priv->previous_is_valid = TRUE;
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}
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void
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meta_cursor_renderer_force_update (MetaCursorRenderer *renderer)
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{
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g_assert (meta_is_wayland_compositor ());
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update_hw_cursor (renderer);
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}
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struct gbm_device *
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meta_cursor_renderer_get_gbm_device (MetaCursorRenderer *renderer)
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{
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MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
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return priv->gbm;
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}
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