/* -*- 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-wayland-outputs.h" #include "meta-wayland-private.h" #include "meta-monitor-manager.h" #include typedef struct { MetaOutput *output; struct wl_global *global; int x, y; enum wl_output_transform transform; GList *resources; } MetaWaylandOutput; /* The minimum resolution at which we turn on a window-scale of 2 */ #define HIDPI_LIMIT 192 /* The minimum screen height at which we turn on a window-scale of 2; * below this there just isn't enough vertical real estate for GNOME * apps to work, and it's better to just be tiny */ #define HIDPI_MIN_HEIGHT 1200 /* From http://en.wikipedia.org/wiki/4K_resolution#Resolutions_of_common_formats */ #define SMALLEST_4K_WIDTH 3656 static void output_resource_destroy (struct wl_resource *res) { MetaWaylandOutput *wayland_output; wayland_output = wl_resource_get_user_data (res); wayland_output->resources = g_list_remove (wayland_output->resources, res); } /* Based on code from gnome-settings-daemon */ static int compute_scale (MetaOutput *output) { int scale = 1; /* Scaling makes no sense */ if (output->crtc->rect.width < HIDPI_MIN_HEIGHT) goto out; /* 4K TV */ if (output->name != NULL && strstr(output->name, "HDMI") != NULL && output->crtc->rect.width >= SMALLEST_4K_WIDTH) goto out; if (output->width_mm > 0 && output->height_mm > 0) { double dpi_x, dpi_y; dpi_x = (double)output->crtc->rect.width / (output->width_mm / 25.4); dpi_y = (double)output->crtc->rect.height / (output->height_mm / 25.4); /* We don't completely trust these values so both must be high, and never pick higher ratio than 2 automatically */ if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT) scale = 2; } out: return scale; } static void bind_output (struct wl_client *client, void *data, guint32 version, guint32 id) { MetaWaylandOutput *wayland_output = data; MetaOutput *output = wayland_output->output; struct wl_resource *resource; guint mode_flags; resource = wl_resource_create (client, &wl_output_interface, version, id); wayland_output->resources = g_list_prepend (wayland_output->resources, resource); wl_resource_set_user_data (resource, wayland_output); wl_resource_set_destructor (resource, output_resource_destroy); meta_verbose ("Binding output %p/%s (%u, %u, %u, %u) x %f\n", output, output->name, output->crtc->rect.x, output->crtc->rect.y, output->crtc->rect.width, output->crtc->rect.height, output->crtc->current_mode->refresh_rate); wl_output_send_geometry (resource, (int)output->crtc->rect.x, (int)output->crtc->rect.y, output->width_mm, output->height_mm, /* Cogl values reflect XRandR values, and so does wayland */ output->subpixel_order, output->vendor, output->product, output->crtc->transform); g_assert (output->crtc->current_mode != NULL); mode_flags = WL_OUTPUT_MODE_CURRENT; if (output->crtc->current_mode == output->preferred_mode) mode_flags |= WL_OUTPUT_MODE_PREFERRED; wl_output_send_mode (resource, mode_flags, (int)output->crtc->current_mode->width, (int)output->crtc->current_mode->height, (int)output->crtc->current_mode->refresh_rate); output->scale = compute_scale (output); if (version >= WL_OUTPUT_SCALE_SINCE_VERSION) wl_output_send_scale (resource, output->scale); if (version >= WL_OUTPUT_DONE_SINCE_VERSION) wl_output_send_done (resource); } static void wayland_output_destroy_notify (gpointer data) { MetaWaylandOutput *wayland_output = data; GList *resources; /* Make sure the destructors don't mess with the list */ resources = wayland_output->resources; wayland_output->resources = NULL; wl_global_destroy (wayland_output->global); g_list_free (resources); g_slice_free (MetaWaylandOutput, wayland_output); } static inline enum wl_output_transform wl_output_transform_from_meta_monitor_transform (MetaMonitorTransform transform) { /* The enums are the same. */ return (enum wl_output_transform) transform; } static void wayland_output_update_for_output (MetaWaylandOutput *wayland_output, MetaOutput *output) { GList *iter; guint mode_flags; enum wl_output_transform wl_transform = wl_output_transform_from_meta_monitor_transform (output->crtc->transform); g_assert (output->crtc->current_mode != NULL); mode_flags = WL_OUTPUT_MODE_CURRENT; if (output->crtc->current_mode == output->preferred_mode) mode_flags |= WL_OUTPUT_MODE_PREFERRED; for (iter = wayland_output->resources; iter; iter = iter->next) { struct wl_resource *resource = iter->data; if (wayland_output->x != output->crtc->rect.x || wayland_output->y != output->crtc->rect.y || wayland_output->transform != wl_transform) { wl_resource_post_event (resource, WL_OUTPUT_GEOMETRY, (int)output->crtc->rect.x, (int)output->crtc->rect.y, output->width_mm, output->height_mm, output->subpixel_order, output->vendor, output->product, wl_transform); } wl_resource_post_event (resource, WL_OUTPUT_MODE, mode_flags, (int)output->crtc->current_mode->width, (int)output->crtc->current_mode->height, (int)output->crtc->current_mode->refresh_rate); } /* It's very important that we change the output pointer here, as the old structure is about to be freed by MetaMonitorManager */ wayland_output->output = output; wayland_output->x = output->crtc->rect.x; wayland_output->y = output->crtc->rect.y; wayland_output->transform = wl_transform; } static GHashTable * meta_wayland_compositor_update_outputs (MetaWaylandCompositor *compositor, MetaMonitorManager *monitors) { MetaOutput *outputs; unsigned int i, n_outputs; GHashTable *new_table; outputs = meta_monitor_manager_get_outputs (monitors, &n_outputs); new_table = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify); for (i = 0; i < n_outputs; i++) { MetaOutput *output = &outputs[i]; MetaWaylandOutput *wayland_output; /* wayland does not expose disabled outputs */ if (output->crtc == NULL) { g_hash_table_remove (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id)); continue; } wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id)); if (wayland_output) { g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id)); } else { wayland_output = g_slice_new0 (MetaWaylandOutput); wayland_output->global = wl_global_create (compositor->wayland_display, &wl_output_interface, META_WL_OUTPUT_VERSION, wayland_output, bind_output); } wayland_output_update_for_output (wayland_output, output); g_hash_table_insert (new_table, GSIZE_TO_POINTER (output->winsys_id), wayland_output); } g_hash_table_destroy (compositor->outputs); return new_table; } static void on_monitors_changed (MetaMonitorManager *monitors, MetaWaylandCompositor *compositor) { compositor->outputs = meta_wayland_compositor_update_outputs (compositor, monitors); } void meta_wayland_outputs_init (MetaWaylandCompositor *compositor) { MetaMonitorManager *monitors; monitors = meta_monitor_manager_get (); g_signal_connect (monitors, "monitors-changed", G_CALLBACK (on_monitors_changed), compositor); compositor->outputs = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify); compositor->outputs = meta_wayland_compositor_update_outputs (compositor, monitors); }