Rename panel-multiscreen files panel-multimonitor

author: William Wold <[email protected]> 2019-06-19 18:30:19 +0000
committer: raveit65 <[email protected]> 2019-06-21 18:47:54 +0200
commit: 8c61fc25221e6ef102c77a859c6a44b9b4e25cb6 (patch)
tree: 5f75a36b9ef9a2687b550bf21143a78c8f5a8933 /mate-panel/panel-multiscreen.c
parent: 8cb8f197fe2cf2babae6824b2dd89c4b712eaa19 (diff)
download: mate-panel-8c61fc25221e6ef102c77a859c6a44b9b4e25cb6.tar.bz2
mate-panel-8c61fc25221e6ef102c77a859c6a44b9b4e25cb6.tar.xz
1 files changed, 0 insertions, 703 deletions
diff --git a/mate-panel/panel-multiscreen.c b/mate-panel/panel-multiscreen.c
deleted file mode 100644
index 04f42666..00000000
--- a/mate-panel/panel-multiscreen.c
+++ /dev/null
@@ -1,703 +0,0 @@
-/*
- * panel-multiscreen.c: Multi-screen and Xinerama support for the panel.
- *
- * Copyright (C) 2001 George Lebl <[email protected]>
- * 2002 Sun Microsystems Inc.
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
- * USA
- *
- * Authors: George Lebl <[email protected]>,
- * Mark McLoughlin <[email protected]>
- */
-
-#include <config.h>
-
-#include <X11/Xatom.h>
-#include <X11/Xlib.h>
-#include <X11/extensions/Xrandr.h>
-#include <gdk/gdkx.h>
-
-#include "panel-multiscreen.h"
-
-#include <string.h>
-
-static int screens = 0;
-static int *monitors = NULL;
-static GdkRectangle **geometries = NULL;
-static gboolean initialized = FALSE;
-static gboolean have_randr = FALSE;
-static guint reinit_id = 0;
-
-#ifdef HAVE_RANDR
-static gboolean
-_panel_multiscreen_output_should_be_first (Display *xdisplay,
- RROutput output,
- XRROutputInfo *info,
- RROutput primary)
-{
- if (primary)
- return output == primary;
-
- Atom connector_type_atom;
- Atom actual_type;
- int actual_format;
- unsigned long nitems;
- unsigned long bytes_after;
- unsigned char *prop;
- char *connector_type;
- gboolean retval;
-
- connector_type_atom = XInternAtom (xdisplay, "ConnectorType", False);
-
- if (XRRGetOutputProperty (xdisplay, output, connector_type_atom,
- 0, 100, False, False, None,
- &actual_type, &actual_format,
- &nitems, &bytes_after, &prop) == Success) {
- if (actual_type == XA_ATOM && nitems == 1 && actual_format == 32) {
- connector_type = XGetAtomName (xdisplay, prop[0]);
- retval = g_strcmp0 (connector_type, "Panel") == 0;
- XFree (connector_type);
- return retval;
- }
- }
-
- /* Fallback (see https://bugs.freedesktop.org/show_bug.cgi?id=26736)
- * "LVDS" is the oh-so-intuitive name that X gives to laptop LCDs.
- * It can actually be LVDS0, LVDS-0, Lvds, etc.
- */
- return (g_ascii_strncasecmp (info->name, "LVDS", strlen ("LVDS")) == 0);
-}
-#endif
-
-static gboolean
-panel_multiscreen_get_randr_monitors_for_screen (GdkScreen *screen,
- int *monitors_ret,
- GdkRectangle **geometries_ret)
-{
-#ifdef HAVE_RANDR
- GdkDisplay *display;
- GdkMonitor *monitor;
- Display *xdisplay;
- Window xroot;
- XRRScreenResources *resources;
- RROutput primary;
- GArray *geometries;
- int scale;
- int i;
-
- if (!have_randr)
- return FALSE;
-
- /* GTK+ 2.14.x uses the Xinerama API, instead of RANDR, to get the
- * monitor geometries. It does this to avoid calling
- * XRRGetScreenResources(), which is slow as it re-detects all the
- * monitors --- note that XRRGetScreenResourcesCurrent() had not been
- * introduced yet. Using Xinerama in GTK+ has the bad side effect that
- * gdk_screen_get_monitor_plug_name() will return NULL, as Xinerama
- * does not provide that information, unlike RANDR.
- *
- * Here we need to identify the output names, so that we can put the
- * built-in LCD in a laptop *before* all other outputs. This is so
- * that mate-panel will normally prefer to appear on the "native"
- * display rather than on an external monitor.
- *
- * To get the output names and geometries, we will not use
- * gdk_screen_get_n_monitors() and friends, but rather we will call
- * XRR*() directly.
- *
- * See https://bugzilla.novell.com/show_bug.cgi?id=479684 for this
- * particular bug, and and
- * http://bugzilla.gnome.org/show_bug.cgi?id=562944 for a more
- * long-term solution.
- */
-
- xdisplay = GDK_SCREEN_XDISPLAY (screen);
- xroot = GDK_WINDOW_XID (gdk_screen_get_root_window (screen));
-
- resources = XRRGetScreenResourcesCurrent (xdisplay, xroot);
- if (resources->noutput == 0) {
- /* This might happen if nothing tried to get randr
- * resources from the server before, so we need an
- * active probe. See comment #27 in
- * https://bugzilla.gnome.org/show_bug.cgi?id=597101 */
- XRRFreeScreenResources (resources);
- resources = XRRGetScreenResources (xdisplay, xroot);
- }
-
- if (!resources)
- return FALSE;
-
- primary = XRRGetOutputPrimary (xdisplay, xroot);
- display = gdk_screen_get_display (screen);
- monitor = gdk_display_get_primary_monitor (display);
-
- /* Use scale factor to bring geometries down to device pixels to support HiDPI displays */
- scale = gdk_monitor_get_scale_factor (monitor);
-
- geometries = g_array_sized_new (FALSE, FALSE,
- sizeof (GdkRectangle),
- resources->noutput);
-
- for (i = 0; i < resources->noutput; i++) {
- XRROutputInfo *output;
-
- output = XRRGetOutputInfo (xdisplay, resources,
- resources->outputs[i]);
-
- if (output->connection != RR_Disconnected &&
- output->crtc != 0) {
- XRRCrtcInfo *crtc;
- GdkRectangle rect;
-
- crtc = XRRGetCrtcInfo (xdisplay, resources,
- output->crtc);
-
- rect.x = crtc->x / scale;
- rect.y = crtc->y / scale;
- rect.width = crtc->width / scale;
- rect.height = crtc->height / scale;
-
- XRRFreeCrtcInfo (crtc);
-
- if (_panel_multiscreen_output_should_be_first (xdisplay,
- resources->outputs[i],
- output, primary))
- g_array_prepend_vals (geometries, &rect, 1);
- else
- g_array_append_vals (geometries, &rect, 1);
- }
-
- XRRFreeOutputInfo (output);
- }
-
- XRRFreeScreenResources (resources);
-
- if (geometries->len == 0) {
- /* This can happen in at least one case:
- * https://bugzilla.novell.com/show_bug.cgi?id=543876 where all
- * monitors appear disconnected (possibly because the screen
- * is behing a KVM switch) -- see comment #8.
- * There might be other cases too, so we stay on the safe side.
- */
- g_array_free (geometries, TRUE);
- return FALSE;
- }
-
- *monitors_ret = geometries->len;
- *geometries_ret = (GdkRectangle *) g_array_free (geometries, FALSE);
-
- return TRUE;
-#else
- return FALSE;
-#endif
-}
-
-static void
-panel_multiscreen_get_gdk_monitors_for_screen (GdkScreen *screen,
- int *monitors_ret,
- GdkRectangle **geometries_ret)
-{
- GdkDisplay *display;
- int num_monitors;
- GdkRectangle *geometries;
- int i;
-
- display = gdk_screen_get_display (screen);
- num_monitors = gdk_display_get_n_monitors (display);
- geometries = g_new (GdkRectangle, num_monitors);
-
- for (i = 0; i < num_monitors; i++)
- gdk_monitor_get_geometry (gdk_display_get_monitor (display, i), &(geometries[i]));
-
- *monitors_ret = num_monitors;
- *geometries_ret = geometries;
-}
-
-static void
-panel_multiscreen_get_raw_monitors_for_screen (GdkScreen *screen,
- int *monitors_ret,
- GdkRectangle **geometries_ret)
-{
- gboolean res;
-
- *monitors_ret = 0;
- *geometries_ret = NULL;
-
- res = panel_multiscreen_get_randr_monitors_for_screen (screen,
- monitors_ret,
- geometries_ret);
- if (res && *monitors_ret > 0)
- return;
-
- panel_multiscreen_get_gdk_monitors_for_screen (screen,
- monitors_ret,
- geometries_ret);
-}
-
-static inline gboolean
-rectangle_overlaps (GdkRectangle *a,
- GdkRectangle *b)
-{
- return gdk_rectangle_intersect (a, b, NULL);
-}
-
-static long
-pixels_in_rectangle (GdkRectangle *r)
-{
- return (long) (r->width * r->height);
-}
-
-static void
-panel_multiscreen_compress_overlapping_monitors (int *num_monitors_inout,
- GdkRectangle **geometries_inout)
-{
- int num_monitors;
- GdkRectangle *geometries;
- int i;
-
- num_monitors = *num_monitors_inout;
- geometries = *geometries_inout;
-
- /* http://bugzilla.gnome.org/show_bug.cgi?id=530969
- * https://bugzilla.novell.com/show_bug.cgi?id=310208
- * and many other such bugs...
- *
- * RANDR sometimes gives us monitors that overlap (i.e. outputs whose
- * bounding rectangles overlap). This is sometimes right and sometimes
- * wrong:
- *
- * * Right - two 1024x768 outputs at the same offset (0, 0) that show
- * the same thing. Think "laptop plus projector with the same
- * resolution".
- *
- * * Wrong - one 1280x1024 output ("laptop internal LCD") and another
- * 1024x768 output ("external monitor"), both at offset (0, 0).
- * There is no way for the monitor with the small resolution to
- * show the complete image from the laptop's LCD, unless one uses
- * panning (but nobody wants panning, right!?).
- *
- * With overlapping monitors, we may end up placing the panel with
- * respect to the "wrong" one. This is always wrong, as the panel
- * appears "in the middle of the screen" of the monitor with the
- * smaller resolution, instead of at the edge.
- *
- * Our strategy is to find the subsets of overlapping monitors, and
- * "compress" each such set to being like if there were a single
- * monitor with the biggest resolution of each of that set's monitors.
- * Say we have four monitors
- *
- * A, B, C, D
- *
- * where B and D overlap. In that case, we'll generate a new list that
- * looks like
- *
- * A, MAX(B, D), C
- *
- * with three monitors.
- *
- * NOTE FOR THE FUTURE: We could avoid most of this mess if we had a
- * concept of a "primary monitor". Also, we could look at each
- * output's name or properties to see if it is the built-in LCD in a
- * laptop. However, with GTK+ 2.14.x we don't get output names, since
- * it gets the list outputs from Xinerama, not RANDR (and Xinerama
- * doesn't provide output names).
- */
-
- for (i = 0; i < num_monitors; i++) {
- long max_pixels;
- int j;
-
- max_pixels = pixels_in_rectangle (&geometries[i]);
-
- j = i + 1;
-
- while (j < num_monitors) {
- if (rectangle_overlaps (&geometries[i],
- &geometries[j])) {
- long pixels;
-
- pixels = pixels_in_rectangle (&geometries[j]);
- if (pixels > max_pixels) {
- max_pixels = pixels;
- /* keep the maximum */
- geometries[i] = geometries[j];
- }
-
- /* Shift the remaining monitors to the left */
- if (num_monitors - j - 1 > 0)
- memmove (&geometries[j],
- &geometries[j + 1],
- sizeof (geometries[0]) * (num_monitors - j - 1));
-
- num_monitors--;
- g_assert (num_monitors > 0);
- } else
- j++;
- }
- }
-
- *num_monitors_inout = num_monitors;
- *geometries_inout = geometries;
-}
-
-static void
-panel_multiscreen_get_monitors_for_screen (GdkScreen *screen,
- int *monitors_ret,
- GdkRectangle **geometries_ret)
-{
- panel_multiscreen_get_raw_monitors_for_screen (screen,
- monitors_ret,
- geometries_ret);
- panel_multiscreen_compress_overlapping_monitors (monitors_ret,
- geometries_ret);
-}
-
-static gboolean
-panel_multiscreen_reinit_idle (gpointer data)
-{
- panel_multiscreen_reinit ();
- reinit_id = 0;
-
- return FALSE;
-}
-
-static void
-panel_multiscreen_queue_reinit (void)
-{
- if (reinit_id)
- return;
-
- reinit_id = g_idle_add (panel_multiscreen_reinit_idle, NULL);
-}
-
-static void
-panel_multiscreen_init_randr (GdkDisplay *display)
-{
-#ifdef HAVE_RANDR
- Display *xdisplay;
- int event_base, error_base;
-#endif
-
- have_randr = FALSE;
-
-#ifdef HAVE_RANDR
- xdisplay = GDK_DISPLAY_XDISPLAY (display);
-
- /* We don't remember the event/error bases, as we expect to get "screen
- * changed" events from GdkScreen instead.
- */
-
- if (XRRQueryExtension (xdisplay, &event_base, &error_base)) {
- int major, minor;
-
- XRRQueryVersion (xdisplay, &major, &minor);
- if ((major == 1 && minor >= 3) || major > 1)
- have_randr = TRUE;
- }
-#endif
-}
-
-void
-panel_multiscreen_init (void)
-{
- GdkDisplay *display;
-
- if (initialized)
- return;
-
- display = gdk_display_get_default ();
- screens = 1;
-
- panel_multiscreen_init_randr (display);
-
- monitors = g_new0 (int, screens);
- geometries = g_new0 (GdkRectangle *, screens);
-
- GdkScreen *screen;
-
- screen = gdk_display_get_default_screen (display);
-
- /* We connect to both signals to be on the safe side, but in
- * theory, it should be enough to only connect to
- * monitors-changed. Since we'll likely get two signals, we do
- * the real callback in the idle loop. */
- g_signal_connect (screen, "size-changed",
- G_CALLBACK (panel_multiscreen_queue_reinit), NULL);
- g_signal_connect (screen, "monitors-changed",
- G_CALLBACK (panel_multiscreen_queue_reinit), NULL);
-
- panel_multiscreen_get_monitors_for_screen (screen,
- &(monitors[0]),
- &(geometries[0]));
-
- initialized = TRUE;
-}
-
-void
-panel_multiscreen_reinit (void)
-{
- GdkScreen *screen;
- GList *toplevels, *l;
-
- if (monitors)
- g_free (monitors);
-
- if (geometries) {
- int j;
-
- for (j = 0; j < screens; j++)
- g_free (geometries[j]);
- g_free (geometries);
- }
-
- screen = gdk_screen_get_default ();
- g_signal_handlers_disconnect_by_func (screen, panel_multiscreen_queue_reinit, NULL);
-
- initialized = FALSE;
- panel_multiscreen_init ();
-
- toplevels = gtk_window_list_toplevels ();
-
- for (l = toplevels; l; l = l->next)
- gtk_widget_queue_resize (l->data);
-
- g_list_free (toplevels);
-}
-
-int
-panel_multiscreen_screens (void)
-{
- return screens;
-}
-
-int
-panel_multiscreen_monitors (GdkScreen *screen)
-{
- int n_screen;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- g_return_val_if_fail (n_screen >= 0 && n_screen < screens, 1);
-
- return monitors [n_screen];
-}
-
-int
-panel_multiscreen_x (GdkScreen *screen,
- int monitor)
-{
- int n_screen;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- g_return_val_if_fail (n_screen >= 0 && n_screen < screens, 0);
- g_return_val_if_fail (monitor >= 0 && monitor < monitors [n_screen], 0);
-
- return geometries [n_screen][monitor].x;
-}
-
-int
-panel_multiscreen_y (GdkScreen *screen,
- int monitor)
-{
- int n_screen;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- g_return_val_if_fail (n_screen >= 0 && n_screen < screens, 0);
- g_return_val_if_fail (monitor >= 0 && monitor < monitors [n_screen], 0);
-
- return geometries [n_screen][monitor].y;
-}
-
-int
-panel_multiscreen_width (GdkScreen *screen,
- int monitor)
-{
- int n_screen;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- g_return_val_if_fail (n_screen >= 0 && n_screen < screens, 0);
- g_return_val_if_fail (monitor >= 0 && monitor < monitors [n_screen], 0);
-
- return geometries [n_screen][monitor].width;
-}
-
-int
-panel_multiscreen_height (GdkScreen *screen,
- int monitor)
-{
- int n_screen;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- g_return_val_if_fail (n_screen >= 0 && n_screen < screens, 0);
- g_return_val_if_fail (monitor >= 0 && monitor < monitors [n_screen], 0);
-
- return geometries [n_screen][monitor].height;
-}
-
-int
-panel_multiscreen_locate_widget_monitor (GtkWidget *widget)
-{
- GtkWidget *toplevel;
- int retval = -1;
-
- toplevel = gtk_widget_get_toplevel (widget);
- if (!toplevel)
- return -1;
-
- g_object_get (toplevel, "monitor", &retval, NULL);
-
- return retval;
-}
-
-static int
-axis_distance (int p, int axis_start, int axis_size)
-{
- if (p >= axis_start && p < axis_start + axis_size)
- return 0;
- else if (p < axis_start)
- return (axis_start - p);
- else
- return (p - (axis_start + axis_size - 1));
-}
-
-/* The panel can't use gdk_screen_get_monitor_at_point() since it has its own
- * view of which monitors are present. Look at get_monitors_for_screen() above
- * to see why. */
-int
-panel_multiscreen_get_monitor_at_point (GdkScreen *screen,
- int x,
- int y)
-{
- int n_screen;
- int i;
- int n_monitors;
- GdkRectangle *geoms;
- int min_dist_squared;
- int closest_monitor;
-
- /* not -1 as callers expect a real monitor */
- g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- n_monitors = monitors[n_screen];
- geoms = geometries[n_screen];
-
- min_dist_squared = G_MAXINT32;
- closest_monitor = 0;
-
- for (i = 0; i < n_monitors; i++) {
- int dist_x, dist_y;
- int dist_squared;
-
- dist_x = axis_distance (x, geoms[i].x, geoms[i].width);
- dist_y = axis_distance (y, geoms[i].y, geoms[i].height);
-
- if (dist_x == 0 && dist_y == 0)
- return i;
-
- dist_squared = dist_x * dist_x + dist_y * dist_y;
-
- if (dist_squared < min_dist_squared) {
- min_dist_squared = dist_squared;
- closest_monitor = i;
- }
- }
-
- return closest_monitor;
-}
-
-typedef struct {
- int x0;
- int y0;
- int x1;
- int y1;
-} MonitorBounds;
-
-static inline void
-get_monitor_bounds (int n_screen,
- int n_monitor,
- MonitorBounds *bounds)
-{
- g_assert (n_screen >= 0 && n_screen < screens);
- g_assert (n_monitor >= 0 || n_monitor < monitors [n_screen]);
- g_assert (bounds != NULL);
-
- bounds->x0 = geometries [n_screen][n_monitor].x;
- bounds->y0 = geometries [n_screen][n_monitor].y;
- bounds->x1 = bounds->x0 + geometries [n_screen][n_monitor].width;
- bounds->y1 = bounds->y0 + geometries [n_screen][n_monitor].height;
-}
-
-/* determines whether a given monitor is along the visible
- * edge of the logical screen.
- */
-void
-panel_multiscreen_is_at_visible_extreme (GdkScreen *screen,
- int n_monitor,
- gboolean *leftmost,
- gboolean *rightmost,
- gboolean *topmost,
- gboolean *bottommost)
-{
- MonitorBounds monitor;
- int n_screen, i;
-
- n_screen = gdk_x11_screen_get_screen_number (screen);
-
- *leftmost = TRUE;
- *rightmost = TRUE;
- *topmost = TRUE;
- *bottommost = TRUE;
-
- g_return_if_fail (n_screen >= 0 && n_screen < screens);
- g_return_if_fail (n_monitor >= 0 && n_monitor < monitors [n_screen]);
-
- get_monitor_bounds (n_screen, n_monitor, &monitor);
-
- /* go through each monitor and try to find one either right,
- * below, above, or left of the specified monitor
- */
-
- for (i = 0; i < monitors [n_screen]; i++) {
- MonitorBounds iter;
-
- if (i == n_monitor) continue;
-
- get_monitor_bounds (n_screen, i, &iter);
-
- if ((iter.y0 >= monitor.y0 && iter.y0 < monitor.y1) ||
- (iter.y1 > monitor.y0 && iter.y1 <= monitor.y1)) {
- if (iter.x0 < monitor.x0)
- *leftmost = FALSE;
- if (iter.x1 > monitor.x1)
- *rightmost = FALSE;
- }
-
- if ((iter.x0 >= monitor.x0 && iter.x0 < monitor.x1) ||
- (iter.x1 > monitor.x0 && iter.x1 <= monitor.x1)) {
- if (iter.y0 < monitor.y0)
- *topmost = FALSE;
- if (iter.y1 > monitor.y1)
- *bottommost = FALSE;
- }
- }
-}
-
author	William Wold <[email protected]>	2019-06-19 18:30:19 +0000
committer	raveit65 <[email protected]>	2019-06-21 18:47:54 +0200
commit	8c61fc25221e6ef102c77a859c6a44b9b4e25cb6 (patch)
tree	5f75a36b9ef9a2687b550bf21143a78c8f5a8933 /mate-panel/panel-multiscreen.c
parent	8cb8f197fe2cf2babae6824b2dd89c4b712eaa19 (diff)
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