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gnome-control-center/panels/display/xrandr-capplet.c

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/* Monitor Settings. A preference panel for configuring monitors
*
* Copyright (C) 2007, 2008 Red Hat, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Soren Sandmann <sandmann@redhat.com>
*/
#include <config.h>
#include <string.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <gtk/gtk.h>
#include "scrollarea.h"
#define GNOME_DESKTOP_USE_UNSTABLE_API
#include <libgnome-desktop/gnome-rr.h>
#include <libgnome-desktop/gnome-rr-config.h>
#include <libgnome-desktop/gnome-rr-labeler.h>
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <glib/gi18n.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-bindings.h>
#include <gdesktop-enums.h>
#include "xrandr-capplet.h"
#define TOP_BAR_HEIGHT 10
#define CLOCK_SCHEMA "org.gnome.desktop.interface"
#define CLOCK_FORMAT_KEY "clock-format"
/* The minimum supported size for the panel, see:
* http://live.gnome.org/Design/SystemSettings */
#define MINIMUM_WIDTH 675
#define MINIMUM_HEIGHT 530
typedef struct App App;
typedef struct GrabInfo GrabInfo;
struct App
{
GnomeRRScreen *screen;
GnomeRRConfig *current_configuration;
GnomeRRLabeler *labeler;
GnomeRROutputInfo *current_output;
GSettings *clock_settings;
GtkBuilder *builder;
GtkWidget *panel;
GtkWidget *current_monitor_event_box;
GtkWidget *current_monitor_label;
GtkWidget *monitor_switch;
GtkListStore *resolution_store;
GtkWidget *resolution_combo;
GtkWidget *rotation_combo;
GtkWidget *clone_checkbox;
GtkWidget *clone_label;
GtkWidget *show_icon_checkbox;
/* We store the event timestamp when the Apply button is clicked */
guint32 apply_button_clicked_timestamp;
GtkWidget *area;
gboolean ignore_gui_changes;
gboolean dragging_top_bar;
/* These are used while we are waiting for the ApplyConfiguration method to be executed over D-bus */
DBusGConnection *connection;
DBusGProxy *proxy;
DBusGProxyCall *proxy_call;
};
static void rebuild_gui (App *app);
static void on_clone_changed (GtkWidget *box, gpointer data);
static gboolean output_overlaps (GnomeRROutputInfo *output, GnomeRRConfig *config);
static void select_current_output_from_dialog_position (App *app);
static void monitor_switch_active_cb (GObject *object, GParamSpec *pspec, gpointer data);
static void get_geometry (GnomeRROutputInfo *output, int *w, int *h);
static void apply_configuration_returned_cb (DBusGProxy *proxy, DBusGProxyCall *call_id, void *data);
static gboolean get_clone_size (GnomeRRScreen *screen, int *width, int *height);
static gboolean output_info_supports_mode (App *app, GnomeRROutputInfo *info, int width, int height);
static void
error_message (App *app, const char *primary_text, const char *secondary_text)
{
GtkWidget *toplevel;
GtkWidget *dialog;
if (app && app->panel)
toplevel = gtk_widget_get_toplevel (app->panel);
else
toplevel = NULL;
dialog = gtk_message_dialog_new (GTK_WINDOW (toplevel),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"%s", primary_text);
if (secondary_text)
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog), "%s", secondary_text);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
static gboolean
do_free (gpointer data)
{
g_free (data);
return FALSE;
}
static gchar *
idle_free (gchar *s)
{
g_idle_add (do_free, s);
return s;
}
static gboolean
should_show_resolution (gint output_width,
gint output_height,
gint width,
gint height)
{
if (width >= MIN (output_width, MINIMUM_WIDTH) &&
height >= MIN (output_height, MINIMUM_HEIGHT))
{
return TRUE;
}
return FALSE;
}
static void
on_screen_changed (GnomeRRScreen *scr,
gpointer data)
{
GnomeRRConfig *current;
App *app = data;
current = gnome_rr_config_new_current (app->screen, NULL);
gnome_rr_config_ensure_primary (current);
if (app->current_configuration)
g_object_unref (app->current_configuration);
app->current_configuration = current;
app->current_output = NULL;
if (app->labeler) {
gnome_rr_labeler_hide (app->labeler);
g_object_unref (app->labeler);
}
app->labeler = gnome_rr_labeler_new (app->current_configuration);
if (gtk_widget_has_focus (app->panel))
gnome_rr_labeler_show (app->labeler);
select_current_output_from_dialog_position (app);
}
static void
on_viewport_changed (FooScrollArea *scroll_area,
GdkRectangle *old_viewport,
GdkRectangle *new_viewport)
{
foo_scroll_area_set_size (scroll_area,
new_viewport->width,
new_viewport->height);
foo_scroll_area_invalidate (scroll_area);
}
static void
layout_set_font (PangoLayout *layout, const char *font)
{
PangoFontDescription *desc =
pango_font_description_from_string (font);
if (desc)
{
pango_layout_set_font_description (layout, desc);
pango_font_description_free (desc);
}
}
static void
clear_combo (GtkWidget *widget)
{
GtkComboBox *box = GTK_COMBO_BOX (widget);
GtkTreeModel *model = gtk_combo_box_get_model (box);
GtkListStore *store = GTK_LIST_STORE (model);
gtk_list_store_clear (store);
}
typedef struct
{
const char *text;
gboolean found;
GtkTreeIter iter;
} ForeachInfo;
static gboolean
foreach (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
ForeachInfo *info = data;
char *text = NULL;
gtk_tree_model_get (model, iter, 0, &text, -1);
g_assert (text != NULL);
if (strcmp (info->text, text) == 0)
{
info->found = TRUE;
info->iter = *iter;
return TRUE;
}
return FALSE;
}
static void
add_key (GtkWidget *widget,
const char *text,
int width, int height, int rate,
GnomeRRRotation rotation)
{
ForeachInfo info;
GtkComboBox *box = GTK_COMBO_BOX (widget);
GtkTreeModel *model = gtk_combo_box_get_model (box);
GtkListStore *store = GTK_LIST_STORE (model);
info.text = text;
info.found = FALSE;
gtk_tree_model_foreach (model, foreach, &info);
if (!info.found)
{
GtkTreeIter iter;
gtk_list_store_insert_with_values (store, &iter, -1,
0, text,
1, width,
2, height,
3, rate,
4, width * height,
5, rotation,
-1);
}
}
static gboolean
combo_select (GtkWidget *widget, const char *text)
{
GtkComboBox *box = GTK_COMBO_BOX (widget);
GtkTreeModel *model = gtk_combo_box_get_model (box);
ForeachInfo info;
info.text = text;
info.found = FALSE;
gtk_tree_model_foreach (model, foreach, &info);
if (!info.found)
return FALSE;
gtk_combo_box_set_active_iter (box, &info.iter);
return TRUE;
}
static GnomeRRMode **
get_current_modes (App *app)
{
GnomeRROutput *output;
if (gnome_rr_config_get_clone (app->current_configuration))
{
return gnome_rr_screen_list_clone_modes (app->screen);
}
else
{
if (!app->current_output)
return NULL;
output = gnome_rr_screen_get_output_by_name (app->screen,
gnome_rr_output_info_get_name (app->current_output));
if (!output)
return NULL;
return gnome_rr_output_list_modes (output);
}
}
static void
rebuild_rotation_combo (App *app)
{
typedef struct
{
GnomeRRRotation rotation;
const char * name;
} RotationInfo;
static const RotationInfo rotations[] = {
{ GNOME_RR_ROTATION_0, N_("Normal") },
{ GNOME_RR_ROTATION_90, N_("Counterclockwise") },
{ GNOME_RR_ROTATION_270, N_("Clockwise") },
{ GNOME_RR_ROTATION_180, N_("180 Degrees") },
};
const char *selection;
GnomeRRRotation current;
int i;
clear_combo (app->rotation_combo);
gtk_widget_set_sensitive (app->rotation_combo,
app->current_output && gnome_rr_output_info_is_active (app->current_output));
if (!app->current_output)
return;
current = gnome_rr_output_info_get_rotation (app->current_output);
selection = NULL;
for (i = 0; i < G_N_ELEMENTS (rotations); ++i)
{
const RotationInfo *info = &(rotations[i]);
gnome_rr_output_info_set_rotation (app->current_output, info->rotation);
/* NULL-GError --- FIXME: we should say why this rotation is not available! */
if (gnome_rr_config_applicable (app->current_configuration, app->screen, NULL))
{
add_key (app->rotation_combo, _(info->name), 0, 0, 0, info->rotation);
if (info->rotation == current)
selection = _(info->name);
}
}
gnome_rr_output_info_set_rotation (app->current_output, current);
if (!(selection && combo_select (app->rotation_combo, selection)))
combo_select (app->rotation_combo, _("Normal"));
}
static int
count_active_outputs (App *app)
{
int i, count = 0;
GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i] != NULL; ++i)
{
if (gnome_rr_output_info_is_active (outputs[i]))
count++;
}
return count;
}
#if 0
static int
count_all_outputs (GnomeRRConfig *config)
{
int i;
GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (config);
for (i = 0; outputs[i] != NULL; i++)
;
return i;
}
#endif
/* Computes whether "Mirror displays" (clone mode) is supported based on these criteria:
*
* 1. There is an available size for cloning.
*
* 2. There are 2 or more connected outputs that support that size.
*/
static gboolean
mirror_screens_is_supported (App *app)
{
int clone_width, clone_height;
gboolean have_clone_size;
gboolean mirror_is_supported;
mirror_is_supported = FALSE;
have_clone_size = get_clone_size (app->screen, &clone_width, &clone_height);
if (have_clone_size) {
int i;
int num_outputs_with_clone_size;
GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (app->current_configuration);
num_outputs_with_clone_size = 0;
for (i = 0; outputs[i] != NULL; i++)
{
/* We count the connected outputs that support the clone size. It
* doesn't matter if those outputs aren't actually On currently; we
* will turn them on in on_clone_changed().
*/
if (gnome_rr_output_info_is_connected (outputs[i]) && output_info_supports_mode (app, outputs[i], clone_width, clone_height))
num_outputs_with_clone_size++;
}
if (num_outputs_with_clone_size >= 2)
mirror_is_supported = TRUE;
}
return mirror_is_supported;
}
static void
rebuild_mirror_screens (App *app)
{
gboolean mirror_is_active;
gboolean mirror_is_supported;
g_signal_handlers_block_by_func (app->clone_checkbox, G_CALLBACK (on_clone_changed), app);
mirror_is_active = app->current_configuration && gnome_rr_config_get_clone (app->current_configuration);
/* If mirror_is_active, then it *must* be possible to turn mirroring off */
mirror_is_supported = mirror_is_active || mirror_screens_is_supported (app);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (app->clone_checkbox), mirror_is_active);
gtk_widget_set_sensitive (app->clone_checkbox, mirror_is_supported);
gtk_widget_set_sensitive (app->clone_label, mirror_is_supported);
g_signal_handlers_unblock_by_func (app->clone_checkbox, G_CALLBACK (on_clone_changed), app);
}
static char *
mirror_monitor_name (void)
{
/* Translators: this is the feature where what you see on your laptop's
* screen is the same as your external monitor. Here, "Mirror" is being
* used as an adjective, not as a verb. For example, the Spanish
* translation could be "Pantallas en Espejo", *not* "Espejar Pantallas".
*/
return g_strdup (_("Mirror Displays"));
}
static void
rebuild_current_monitor_label (App *app)
{
char *str, *tmp;
GdkColor color;
gboolean use_color;
if (app->current_output)
{
if (gnome_rr_config_get_clone (app->current_configuration))
tmp = mirror_monitor_name ();
else
tmp = g_strdup (gnome_rr_output_info_get_display_name (app->current_output));
str = g_strdup_printf ("<b>%s</b>", tmp);
gnome_rr_labeler_get_color_for_output (app->labeler, app->current_output, &color);
use_color = TRUE;
g_free (tmp);
}
else
{
str = g_strdup_printf ("<b>%s</b>", _("Monitor"));
use_color = FALSE;
}
gtk_label_set_markup (GTK_LABEL (app->current_monitor_label), str);
g_free (str);
if (use_color)
{
GdkRGBA black = { 0, 0, 0, 1.0 };
GdkRGBA light;
light.red = color.red / 65535.0;
light.green = color.green / 65535.0;
light.blue = color.blue / 65535.0;
light.alpha = 1.0;
gtk_widget_override_background_color (app->current_monitor_event_box,
gtk_widget_get_state_flags (app->current_monitor_event_box),
&light);
/* Make the label explicitly black. We don't want it to follow the
* theme's colors, since the label is always shown against a light
* pastel background. See bgo#556050
*/
gtk_widget_override_color (app->current_monitor_label,
gtk_widget_get_state_flags (app->current_monitor_label),
&black);
}
else
{
/* Remove any modifications we did on the label's color */
gtk_widget_override_color (app->current_monitor_label,
gtk_widget_get_state_flags (app->current_monitor_label),
NULL);
}
gtk_event_box_set_visible_window (GTK_EVENT_BOX (app->current_monitor_event_box), use_color);
}
static void
rebuild_on_off_radios (App *app)
{
gboolean sensitive;
gboolean on_active;
g_signal_handlers_block_by_func (app->monitor_switch, G_CALLBACK (monitor_switch_active_cb), app);
sensitive = FALSE;
on_active = FALSE;
if (!gnome_rr_config_get_clone (app->current_configuration) && app->current_output)
{
if (count_active_outputs (app) > 1 || !gnome_rr_output_info_is_active (app->current_output))
sensitive = TRUE;
else
sensitive = FALSE;
on_active = gnome_rr_output_info_is_active (app->current_output);
}
gtk_widget_set_sensitive (app->monitor_switch, sensitive);
gtk_switch_set_active (GTK_SWITCH (app->monitor_switch), on_active);
g_signal_handlers_unblock_by_func (app->monitor_switch, G_CALLBACK (monitor_switch_active_cb), app);
}
static char *
make_resolution_string (int width, int height)
{
int ratio;
const char *aspect = NULL;
if (width && height) {
if (width > height)
ratio = width * 10 / height;
else
ratio = height * 10 / width;
switch (ratio) {
case 13:
aspect = "4:3";
break;
case 16:
aspect = "16:10";
break;
case 17:
aspect = "16:9";
break;
case 12:
aspect = "5:4";
break;
/* This catches 1.5625 as well (1600x1024) when maybe it shouldn't. */
case 15:
aspect = "3:2";
break;
case 18:
aspect = "9:5";
break;
case 10:
aspect = "1:1";
break;
}
}
if (aspect != NULL)
return g_strdup_printf (_("%d x %d (%s)"), width, height, aspect);
else
return g_strdup_printf (_("%d x %d"), width, height);
}
static void
find_best_mode (GnomeRRMode **modes, int *out_width, int *out_height)
{
int i;
*out_width = 0;
*out_height = 0;
for (i = 0; modes[i] != NULL; i++)
{
int w, h;
w = gnome_rr_mode_get_width (modes[i]);
h = gnome_rr_mode_get_height (modes[i]);
if (w * h > *out_width * *out_height)
{
*out_width = w;
*out_height = h;
}
}
}
static void
rebuild_resolution_combo (App *app)
{
int i;
GnomeRRMode **modes;
const char *current;
int output_width, output_height;
clear_combo (app->resolution_combo);
if (!(modes = get_current_modes (app))
|| !app->current_output
|| !gnome_rr_output_info_is_active (app->current_output))
{
gtk_widget_set_sensitive (app->resolution_combo, FALSE);
return;
}
g_assert (app->current_output != NULL);
gnome_rr_output_info_get_geometry (app->current_output, NULL, NULL, &output_width, &output_height);
g_assert (output_width != 0 && output_height != 0);
gtk_widget_set_sensitive (app->resolution_combo, TRUE);
for (i = 0; modes[i] != NULL; ++i)
{
int width, height;
width = gnome_rr_mode_get_width (modes[i]);
height = gnome_rr_mode_get_height (modes[i]);
if (should_show_resolution (output_width, output_height, width, height))
{
add_key (app->resolution_combo,
idle_free (make_resolution_string (width, height)),
width, height, 0, -1);
}
}
current = idle_free (make_resolution_string (output_width, output_height));
if (!combo_select (app->resolution_combo, current))
{
int best_w, best_h;
find_best_mode (modes, &best_w, &best_h);
combo_select (app->resolution_combo, idle_free (make_resolution_string (best_w, best_h)));
}
}
static void
rebuild_gui (App *app)
{
/* We would break spectacularly if we recursed, so
* just assert if that happens
*/
g_assert (app->ignore_gui_changes == FALSE);
app->ignore_gui_changes = TRUE;
rebuild_mirror_screens (app);
rebuild_current_monitor_label (app);
rebuild_on_off_radios (app);
rebuild_resolution_combo (app);
rebuild_rotation_combo (app);
app->ignore_gui_changes = FALSE;
}
static gboolean
get_mode (GtkWidget *widget, int *width, int *height, int *freq, GnomeRRRotation *rot)
{
GtkTreeIter iter;
GtkTreeModel *model;
GtkComboBox *box = GTK_COMBO_BOX (widget);
int dummy;
if (!gtk_combo_box_get_active_iter (box, &iter))
return FALSE;
if (!width)
width = &dummy;
if (!height)
height = &dummy;
if (!freq)
freq = &dummy;
if (!rot)
rot = (GnomeRRRotation *)&dummy;
model = gtk_combo_box_get_model (box);
gtk_tree_model_get (model, &iter,
1, width,
2, height,
3, freq,
5, rot,
-1);
return TRUE;
}
static void
on_rotation_changed (GtkComboBox *box, gpointer data)
{
App *app = data;
GnomeRRRotation rotation;
if (!app->current_output)
return;
if (get_mode (app->rotation_combo, NULL, NULL, NULL, &rotation))
gnome_rr_output_info_set_rotation (app->current_output, rotation);
foo_scroll_area_invalidate (FOO_SCROLL_AREA (app->area));
}
static void
select_resolution_for_current_output (App *app)
{
GnomeRRMode **modes;
int width, height;
int x,y;
gnome_rr_output_info_get_geometry (app->current_output, &x, &y, NULL, NULL);
width = gnome_rr_output_info_get_preferred_width (app->current_output);
height = gnome_rr_output_info_get_preferred_height (app->current_output);
if (width != 0 && height != 0)
{
gnome_rr_output_info_set_geometry (app->current_output, x, y, width, height);
return;
}
modes = get_current_modes (app);
if (!modes)
return;
find_best_mode (modes, &width, &height);
gnome_rr_output_info_set_geometry (app->current_output, x, y, width, height);
}
static void
monitor_switch_active_cb (GObject *object,
GParamSpec *pspec,
gpointer data)
{
App *app = data;
gboolean value;
if (!app->current_output)
return;
value = gtk_switch_get_active (GTK_SWITCH (object));
if (value)
{
gnome_rr_output_info_set_active (app->current_output, TRUE);
select_resolution_for_current_output (app);
}
else
{
gnome_rr_output_info_set_active (app->current_output, FALSE);
gnome_rr_config_ensure_primary (app->current_configuration);
}
rebuild_gui (app);
foo_scroll_area_invalidate (FOO_SCROLL_AREA (app->area));
}
static void
realign_outputs_after_resolution_change (App *app, GnomeRROutputInfo *output_that_changed, int old_width, int old_height)
{
/* We find the outputs that were below or to the right of the output that
* changed, and realign them; we also do that for outputs that shared the
* right/bottom edges with the output that changed. The outputs that are
* above or to the left of that output don't need to change.
*/
int i;
int old_right_edge, old_bottom_edge;
int dx, dy;
int x, y, width, height;
GnomeRROutputInfo **outputs;
g_assert (app->current_configuration != NULL);
gnome_rr_output_info_get_geometry (output_that_changed, &x, &y, &width, &height);
if (width == old_width && height == old_height)
return;
old_right_edge = x + old_width;
old_bottom_edge = y + old_height;
dx = width - old_width;
dy = height - old_height;
outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i] != NULL; i++)
{
int output_x, output_y;
int output_width, output_height;
if (outputs[i] == output_that_changed || !gnome_rr_output_info_is_connected (outputs[i]))
continue;
gnome_rr_output_info_get_geometry (outputs[i], &output_x, &output_y, &output_width, &output_height);
if (output_x >= old_right_edge)
output_x += dx;
else if (output_x + output_width == old_right_edge)
output_x = x + width - output_width;
if (output_y >= old_bottom_edge)
output_y += dy;
else if (output_y + output_height == old_bottom_edge)
output_y = y + height - output_height;
gnome_rr_output_info_set_geometry (outputs[i], output_x, output_y, output_width, output_height);
}
}
static void
on_resolution_changed (GtkComboBox *box, gpointer data)
{
App *app = data;
int old_width, old_height;
int x,y;
int width;
int height;
if (!app->current_output)
return;
gnome_rr_output_info_get_geometry (app->current_output, &x, &y, &old_width, &old_height);
if (get_mode (app->resolution_combo, &width, &height, NULL, NULL))
{
gnome_rr_output_info_set_geometry (app->current_output, x, y, width, height);
if (width == 0 || height == 0)
gnome_rr_output_info_set_active (app->current_output, FALSE);
else
gnome_rr_output_info_set_active (app->current_output, TRUE);
}
realign_outputs_after_resolution_change (app, app->current_output, old_width, old_height);
rebuild_rotation_combo (app);
foo_scroll_area_invalidate (FOO_SCROLL_AREA (app->area));
}
static void
lay_out_outputs_horizontally (App *app)
{
int i;
int x;
GnomeRROutputInfo **outputs;
/* Lay out all the monitors horizontally when "mirror screens" is turned
* off, to avoid having all of them overlapped initially. We put the
* outputs turned off on the right-hand side.
*/
x = 0;
/* First pass, all "on" outputs */
outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i]; ++i)
{
int width, height;
if (gnome_rr_output_info_is_connected (outputs[i]) && gnome_rr_output_info_is_active (outputs[i]))
{
gnome_rr_output_info_get_geometry (outputs[i], NULL, NULL, &width, &height);
gnome_rr_output_info_set_geometry (outputs[i], x, 0, width, height);
x += width;
}
}
/* Second pass, all the black screens */
for (i = 0; outputs[i]; ++i)
{
int width, height;
if (!(gnome_rr_output_info_is_connected (outputs[i]) && gnome_rr_output_info_is_active (outputs[i])))
{
gnome_rr_output_info_get_geometry (outputs[i], NULL, NULL, &width, &height);
gnome_rr_output_info_set_geometry (outputs[i], x, 0, width, height);
x += width;
}
}
}
/* FIXME: this function is copied from gnome-settings-daemon/plugins/xrandr/gsd-xrandr-manager.c.
* Do we need to put this function in gnome-desktop for public use?
*/
static gboolean
get_clone_size (GnomeRRScreen *screen, int *width, int *height)
{
GnomeRRMode **modes = gnome_rr_screen_list_clone_modes (screen);
int best_w, best_h;
int i;
best_w = 0;
best_h = 0;
for (i = 0; modes[i] != NULL; ++i) {
GnomeRRMode *mode = modes[i];
int w, h;
w = gnome_rr_mode_get_width (mode);
h = gnome_rr_mode_get_height (mode);
if (w * h > best_w * best_h) {
best_w = w;
best_h = h;
}
}
if (best_w > 0 && best_h > 0) {
if (width)
*width = best_w;
if (height)
*height = best_h;
return TRUE;
}
return FALSE;
}
static gboolean
output_info_supports_mode (App *app, GnomeRROutputInfo *info, int width, int height)
{
GnomeRROutput *output;
GnomeRRMode **modes;
int i;
if (!gnome_rr_output_info_is_connected (info))
return FALSE;
output = gnome_rr_screen_get_output_by_name (app->screen, gnome_rr_output_info_get_name (info));
if (!output)
return FALSE;
modes = gnome_rr_output_list_modes (output);
for (i = 0; modes[i]; i++) {
if (gnome_rr_mode_get_width (modes[i]) == width
&& gnome_rr_mode_get_height (modes[i]) == height)
return TRUE;
}
return FALSE;
}
static void
on_clone_changed (GtkWidget *box, gpointer data)
{
App *app = data;
gnome_rr_config_set_clone (app->current_configuration, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (app->clone_checkbox)));
if (gnome_rr_config_get_clone (app->current_configuration))
{
int i;
int width, height;
GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i]; ++i)
{
if (gnome_rr_output_info_is_connected (outputs[i]))
{
app->current_output = outputs[i];
break;
}
}
/* Turn on all the connected screens that support the best clone mode.
* The user may hit "Mirror displays", but he shouldn't have to turn on
* all the required outputs as well.
*/
get_clone_size (app->screen, &width, &height);
for (i = 0; outputs[i]; i++) {
int x, y;
if (output_info_supports_mode (app, outputs[i], width, height)) {
gnome_rr_output_info_set_active (outputs[i], TRUE);
gnome_rr_output_info_get_geometry (outputs[i], &x, &y, NULL, NULL);
gnome_rr_output_info_set_geometry (outputs[i], x, y, width, height);
}
}
}
else
{
if (output_overlaps (app->current_output, app->current_configuration))
lay_out_outputs_horizontally (app);
}
rebuild_gui (app);
}
static void
apply_rotation_to_geometry (GnomeRROutputInfo *output, int *w, int *h)
{
GnomeRRRotation rotation;
rotation = gnome_rr_output_info_get_rotation (output);
if ((rotation & GNOME_RR_ROTATION_90) || (rotation & GNOME_RR_ROTATION_270))
{
int tmp;
tmp = *h;
*h = *w;
*w = tmp;
}
}
static void
get_geometry (GnomeRROutputInfo *output, int *w, int *h)
{
if (gnome_rr_output_info_is_active (output))
{
gnome_rr_output_info_get_geometry (output, NULL, NULL, w, h);
}
else
{
*h = gnome_rr_output_info_get_preferred_height (output);
*w = gnome_rr_output_info_get_preferred_width (output);
}
apply_rotation_to_geometry (output, w, h);
}
#define SPACE 15
#define MARGIN 15
static GList *
list_connected_outputs (App *app, int *total_w, int *total_h)
{
int i, dummy;
GList *result = NULL;
GnomeRROutputInfo **outputs;
if (!total_w)
total_w = &dummy;
if (!total_h)
total_h = &dummy;
*total_w = 0;
*total_h = 0;
outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i] != NULL; ++i)
{
if (gnome_rr_output_info_is_connected (outputs[i]))
{
int w, h;
result = g_list_prepend (result, outputs[i]);
get_geometry (outputs[i], &w, &h);
*total_w += w;
*total_h += h;
}
}
return g_list_reverse (result);
}
static int
get_n_connected (App *app)
{
GList *connected_outputs = list_connected_outputs (app, NULL, NULL);
int n = g_list_length (connected_outputs);
g_list_free (connected_outputs);
return n;
}
static double
compute_scale (App *app)
{
int available_w, available_h;
int total_w, total_h;
int n_monitors;
GdkRectangle viewport;
GList *connected_outputs;
foo_scroll_area_get_viewport (FOO_SCROLL_AREA (app->area), &viewport);
connected_outputs = list_connected_outputs (app, &total_w, &total_h);
n_monitors = g_list_length (connected_outputs);
g_list_free (connected_outputs);
available_w = viewport.width - 2 * MARGIN - (n_monitors - 1) * SPACE;
available_h = viewport.height - 2 * MARGIN - (n_monitors - 1) * SPACE;
return MIN ((double)available_w / total_w, (double)available_h / total_h);
}
typedef struct Edge
{
GnomeRROutputInfo *output;
int x1, y1;
int x2, y2;
} Edge;
typedef struct Snap
{
Edge *snapper; /* Edge that should be snapped */
Edge *snappee;
int dy, dx;
} Snap;
static void
add_edge (GnomeRROutputInfo *output, int x1, int y1, int x2, int y2, GArray *edges)
{
Edge e;
e.x1 = x1;
e.x2 = x2;
e.y1 = y1;
e.y2 = y2;
e.output = output;
g_array_append_val (edges, e);
}
static void
list_edges_for_output (GnomeRROutputInfo *output, GArray *edges)
{
int x, y, w, h;
gnome_rr_output_info_get_geometry (output, &x, &y, &w, &h);
apply_rotation_to_geometry (output, &w, &h);
/* Top, Bottom, Left, Right */
add_edge (output, x, y, x + w, y, edges);
add_edge (output, x, y + h, x + w, y + h, edges);
add_edge (output, x, y, x, y + h, edges);
add_edge (output, x + w, y, x + w, y + h, edges);
}
static void
list_edges (GnomeRRConfig *config, GArray *edges)
{
int i;
GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (config);
for (i = 0; outputs[i]; ++i)
{
if (gnome_rr_output_info_is_connected (outputs[i]))
list_edges_for_output (outputs[i], edges);
}
}
static gboolean
overlap (int s1, int e1, int s2, int e2)
{
return (!(e1 < s2 || s1 >= e2));
}
static gboolean
horizontal_overlap (Edge *snapper, Edge *snappee)
{
if (snapper->y1 != snapper->y2 || snappee->y1 != snappee->y2)
return FALSE;
return overlap (snapper->x1, snapper->x2, snappee->x1, snappee->x2);
}
static gboolean
vertical_overlap (Edge *snapper, Edge *snappee)
{
if (snapper->x1 != snapper->x2 || snappee->x1 != snappee->x2)
return FALSE;
return overlap (snapper->y1, snapper->y2, snappee->y1, snappee->y2);
}
static void
add_snap (GArray *snaps, Snap snap)
{
if (ABS (snap.dx) <= 200 || ABS (snap.dy) <= 200)
g_array_append_val (snaps, snap);
}
static void
add_edge_snaps (Edge *snapper, Edge *snappee, GArray *snaps)
{
Snap snap;
snap.snapper = snapper;
snap.snappee = snappee;
if (horizontal_overlap (snapper, snappee))
{
snap.dx = 0;
snap.dy = snappee->y1 - snapper->y1;
add_snap (snaps, snap);
}
else if (vertical_overlap (snapper, snappee))
{
snap.dy = 0;
snap.dx = snappee->x1 - snapper->x1;
add_snap (snaps, snap);
}
/* Corner snaps */
/* 1->1 */
snap.dx = snappee->x1 - snapper->x1;
snap.dy = snappee->y1 - snapper->y1;
add_snap (snaps, snap);
/* 1->2 */
snap.dx = snappee->x2 - snapper->x1;
snap.dy = snappee->y2 - snapper->y1;
add_snap (snaps, snap);
/* 2->2 */
snap.dx = snappee->x2 - snapper->x2;
snap.dy = snappee->y2 - snapper->y2;
add_snap (snaps, snap);
/* 2->1 */
snap.dx = snappee->x1 - snapper->x2;
snap.dy = snappee->y1 - snapper->y2;
add_snap (snaps, snap);
}
static void
list_snaps (GnomeRROutputInfo *output, GArray *edges, GArray *snaps)
{
int i;
for (i = 0; i < edges->len; ++i)
{
Edge *output_edge = &(g_array_index (edges, Edge, i));
if (output_edge->output == output)
{
int j;
for (j = 0; j < edges->len; ++j)
{
Edge *edge = &(g_array_index (edges, Edge, j));
if (edge->output != output)
add_edge_snaps (output_edge, edge, snaps);
}
}
}
}
#if 0
static void
print_edge (Edge *edge)
{
g_debug ("(%d %d %d %d)", edge->x1, edge->y1, edge->x2, edge->y2);
}
#endif
static gboolean
corner_on_edge (int x, int y, Edge *e)
{
if (x == e->x1 && x == e->x2 && y >= e->y1 && y <= e->y2)
return TRUE;
if (y == e->y1 && y == e->y2 && x >= e->x1 && x <= e->x2)
return TRUE;
return FALSE;
}
static gboolean
edges_align (Edge *e1, Edge *e2)
{
if (corner_on_edge (e1->x1, e1->y1, e2))
return TRUE;
if (corner_on_edge (e2->x1, e2->y1, e1))
return TRUE;
return FALSE;
}
static gboolean
output_is_aligned (GnomeRROutputInfo *output, GArray *edges)
{
gboolean result = FALSE;
int i;
for (i = 0; i < edges->len; ++i)
{
Edge *output_edge = &(g_array_index (edges, Edge, i));
if (output_edge->output == output)
{
int j;
for (j = 0; j < edges->len; ++j)
{
Edge *edge = &(g_array_index (edges, Edge, j));
/* We are aligned if an output edge matches
* an edge of another output
*/
if (edge->output != output_edge->output)
{
if (edges_align (output_edge, edge))
{
result = TRUE;
goto done;
}
}
}
}
}
done:
return result;
}
static void
get_output_rect (GnomeRROutputInfo *output, GdkRectangle *rect)
{
gnome_rr_output_info_get_geometry (output, &rect->x, &rect->y, &rect->width, &rect->height);
apply_rotation_to_geometry (output, &rect->width, &rect->height);
}
static gboolean
output_overlaps (GnomeRROutputInfo *output, GnomeRRConfig *config)
{
int i;
GdkRectangle output_rect;
GnomeRROutputInfo **outputs;
g_assert (output != NULL);
get_output_rect (output, &output_rect);
outputs = gnome_rr_config_get_outputs (config);
for (i = 0; outputs[i]; ++i)
{
if (outputs[i] != output && gnome_rr_output_info_is_connected (outputs[i]))
{
GdkRectangle other_rect;
get_output_rect (outputs[i], &other_rect);
if (gdk_rectangle_intersect (&output_rect, &other_rect, NULL))
return TRUE;
}
}
return FALSE;
}
static gboolean
gnome_rr_config_is_aligned (GnomeRRConfig *config, GArray *edges)
{
int i;
gboolean result = TRUE;
GnomeRROutputInfo **outputs;
outputs = gnome_rr_config_get_outputs (config);
for (i = 0; outputs[i]; ++i)
{
if (gnome_rr_output_info_is_connected (outputs[i]))
{
if (!output_is_aligned (outputs[i], edges))
return FALSE;
if (output_overlaps (outputs[i], config))
return FALSE;
}
}
return result;
}
struct GrabInfo
{
int grab_x;
int grab_y;
int output_x;
int output_y;
};
static gboolean
is_corner_snap (const Snap *s)
{
return s->dx != 0 && s->dy != 0;
}
static int
compare_snaps (gconstpointer v1, gconstpointer v2)
{
const Snap *s1 = v1;
const Snap *s2 = v2;
int sv1 = MAX (ABS (s1->dx), ABS (s1->dy));
int sv2 = MAX (ABS (s2->dx), ABS (s2->dy));
int d;
d = sv1 - sv2;
/* This snapping algorithm is good enough for rock'n'roll, but
* this is probably a better:
*
* First do a horizontal/vertical snap, then
* with the new coordinates from that snap,
* do a corner snap.
*
* Right now, it's confusing that corner snapping
* depends on the distance in an axis that you can't actually see.
*
*/
if (d == 0)
{
if (is_corner_snap (s1) && !is_corner_snap (s2))
return -1;
else if (is_corner_snap (s2) && !is_corner_snap (s1))
return 1;
else
return 0;
}
else
{
return d;
}
}
/* Sets a mouse cursor for a widget's window. As a hack, you can pass
* GDK_BLANK_CURSOR to mean "set the cursor to NULL" (i.e. reset the widget's
* window's cursor to its default).
*/
static void
set_cursor (GtkWidget *widget, GdkCursorType type)
{
GdkCursor *cursor;
GdkWindow *window;
if (type == GDK_BLANK_CURSOR)
cursor = NULL;
else
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget), type);
window = gtk_widget_get_window (widget);
if (window)
gdk_window_set_cursor (window, cursor);
if (cursor)
g_object_unref (cursor);
}
static void
set_top_bar_tooltip (App *app, gboolean is_dragging)
{
const char *text;
if (is_dragging)
text = NULL;
else
text = _("Drag to change primary display.");
gtk_widget_set_tooltip_text (app->area, text);
}
static void
on_top_bar_event (FooScrollArea *area,
FooScrollAreaEvent *event,
App *app)
{
/* Ignore drops */
if (event->type == FOO_DROP)
return;
/* If the mouse is inside the top bar, set the cursor to "you can move me". See
* on_canvas_event() for where we reset the cursor to the default if it
* exits the outputs' area.
*/
if (!gnome_rr_config_get_clone (app->current_configuration) && get_n_connected (app) > 1)
set_cursor (GTK_WIDGET (area), GDK_HAND1);
if (event->type == FOO_BUTTON_PRESS)
{
rebuild_gui (app);
set_top_bar_tooltip (app, TRUE);
if (!gnome_rr_config_get_clone (app->current_configuration) && get_n_connected (app) > 1)
{
app->dragging_top_bar = TRUE;
foo_scroll_area_begin_grab (area, (FooScrollAreaEventFunc) on_top_bar_event, app);
}
foo_scroll_area_invalidate (area);
}
else
{
if (foo_scroll_area_is_grabbed (area))
{
if (event->type == FOO_BUTTON_RELEASE)
{
foo_scroll_area_end_grab (area, event);
app->dragging_top_bar = FALSE;
set_top_bar_tooltip (app, FALSE);
}
foo_scroll_area_invalidate (area);
}
}
}
static void
set_monitors_tooltip (App *app, gboolean is_dragging)
{
const char *text;
if (is_dragging)
text = NULL;
else
text = _("Select a monitor to change its properties; drag it to rearrange its placement.");
gtk_widget_set_tooltip_text (app->area, text);
}
static void
set_primary_output (App *app,
GnomeRROutputInfo *output)
{
int i;
GnomeRROutputInfo **outputs;
outputs = gnome_rr_config_get_outputs (app->current_configuration);
for (i = 0; outputs[i] != NULL; ++i)
gnome_rr_output_info_set_primary (outputs[i], outputs[i] == output);
}
static void
on_output_event (FooScrollArea *area,
FooScrollAreaEvent *event,
gpointer data)
{
GnomeRROutputInfo *output = data;
App *app = g_object_get_data (G_OBJECT (area), "app");
if (event->type == FOO_DRAG_HOVER)
{
if (gnome_rr_output_info_is_active (output) && app->dragging_top_bar)
set_primary_output (app, output);
return;
}
if (event->type == FOO_DROP)
{
/* Activate new primary? */
return;
}
/* If the mouse is inside the outputs, set the cursor to "you can move me". See
* on_canvas_event() for where we reset the cursor to the default if it
* exits the outputs' area.
*/
if (!gnome_rr_config_get_clone (app->current_configuration) && get_n_connected (app) > 1)
set_cursor (GTK_WIDGET (area), GDK_FLEUR);
if (event->type == FOO_BUTTON_PRESS)
{
GrabInfo *info;
app->current_output = output;
rebuild_gui (app);
set_monitors_tooltip (app, TRUE);
if (!gnome_rr_config_get_clone (app->current_configuration) && get_n_connected (app) > 1)
{
int output_x, output_y;
gnome_rr_output_info_get_geometry (output, &output_x, &output_y, NULL, NULL);
foo_scroll_area_begin_grab (area, on_output_event, data);
info = g_new0 (GrabInfo, 1);
info->grab_x = event->x;
info->grab_y = event->y;
info->output_x = output_x;
info->output_y = output_y;
g_object_set_data (G_OBJECT (output), "grab-info", info);
}
foo_scroll_area_invalidate (area);
}
else
{
if (foo_scroll_area_is_grabbed (area))
{
GrabInfo *info = g_object_get_data (G_OBJECT (output), "grab-info");
double scale = compute_scale (app);
int old_x, old_y;
int width, height;
int new_x, new_y;
int i;
GArray *edges, *snaps, *new_edges;
gnome_rr_output_info_get_geometry (output, &old_x, &old_y, &width, &height);
new_x = info->output_x + (event->x - info->grab_x) / scale;
new_y = info->output_y + (event->y - info->grab_y) / scale;
gnome_rr_output_info_set_geometry (output, new_x, new_y, width, height);
edges = g_array_new (TRUE, TRUE, sizeof (Edge));
snaps = g_array_new (TRUE, TRUE, sizeof (Snap));
new_edges = g_array_new (TRUE, TRUE, sizeof (Edge));
list_edges (app->current_configuration, edges);
list_snaps (output, edges, snaps);
g_array_sort (snaps, compare_snaps);
gnome_rr_output_info_set_geometry (output, new_x, new_y, width, height);
for (i = 0; i < snaps->len; ++i)
{
Snap *snap = &(g_array_index (snaps, Snap, i));
GArray *new_edges = g_array_new (TRUE, TRUE, sizeof (Edge));
gnome_rr_output_info_set_geometry (output, new_x + snap->dx, new_y + snap->dy, width, height);
g_array_set_size (new_edges, 0);
list_edges (app->current_configuration, new_edges);
if (gnome_rr_config_is_aligned (app->current_configuration, new_edges))
{
g_array_free (new_edges, TRUE);
break;
}
else
{
gnome_rr_output_info_set_geometry (output, info->output_x, info->output_y, width, height);
}
}
g_array_free (new_edges, TRUE);
g_array_free (snaps, TRUE);
g_array_free (edges, TRUE);
if (event->type == FOO_BUTTON_RELEASE)
{
foo_scroll_area_end_grab (area, event);
set_monitors_tooltip (app, FALSE);
g_free (g_object_get_data (G_OBJECT (output), "grab-info"));
g_object_set_data (G_OBJECT (output), "grab-info", NULL);
#if 0
g_debug ("new position: %d %d %d %d", output->x, output->y, output->width, output->height);
#endif
}
foo_scroll_area_invalidate (area);
}
}
}
static void
on_canvas_event (FooScrollArea *area,
FooScrollAreaEvent *event,
gpointer data)
{
/* If the mouse exits the outputs, reset the cursor to the default. See
* on_output_event() for where we set the cursor to the movement cursor if
* it is over one of the outputs.
*/
set_cursor (GTK_WIDGET (area), GDK_BLANK_CURSOR);
}
static PangoLayout *
get_display_name (App *app,
GnomeRROutputInfo *output)
{
PangoLayout *layout;
char *text;
if (gnome_rr_config_get_clone (app->current_configuration))
text = mirror_monitor_name ();
else
text = g_strdup (gnome_rr_output_info_get_display_name (output));
layout = gtk_widget_create_pango_layout (GTK_WIDGET (app->area), text);
g_free (text);
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
return layout;
}
static void
paint_background (FooScrollArea *area,
cairo_t *cr)
{
GdkRectangle viewport;
GtkWidget *widget;
GtkStyleContext *context;
GdkRGBA fg, bg;
widget = GTK_WIDGET (area);
foo_scroll_area_get_viewport (area, &viewport);
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_color (context, GTK_STATE_FLAG_NORMAL, &fg);
gtk_style_context_get_background_color (context, GTK_STATE_FLAG_NORMAL, &bg);
cairo_set_source_rgba (cr,
(fg.red + bg.red) / 2,
(fg.green + bg.green) / 2,
(fg.blue + bg.blue) / 2,
(fg.alpha + bg.alpha) / 2);
cairo_rectangle (cr,
viewport.x, viewport.y,
viewport.width, viewport.height);
cairo_fill_preserve (cr);
foo_scroll_area_add_input_from_fill (area, cr, on_canvas_event, NULL);
cairo_set_source_rgba (cr,
0.7 * bg.red,
0.7 * bg.green,
0.7 * bg.blue,
0.7 * bg.alpha);
cairo_stroke (cr);
}
static void
color_shade (double *r,
double *g,
double *b,
double k)
{
double h, s, v;
gtk_rgb_to_hsv (*r, *g, *b, &h, &s, &v);
s *= k;
if (s > 1.0)
s = 1.0;
else if (s < 0.0)
s = 0.0;
v *= k;
if (v > 1.0)
v = 1.0;
else if (v < 0.0)
v = 0.0;
gtk_hsv_to_rgb (h, s, v, r, g, b);
}
static void
paint_output (App *app, cairo_t *cr, int i)
{
int w, h;
double scale = compute_scale (app);
double x, y;
int output_x, output_y;
GnomeRRRotation rotation;
int total_w, total_h;
GList *connected_outputs = list_connected_outputs (app, &total_w, &total_h);
GnomeRROutputInfo *output = g_list_nth (connected_outputs, i)->data;
PangoLayout *layout = get_display_name (app, output);
PangoRectangle ink_extent, log_extent;
GdkRectangle viewport;
GdkColor output_color;
double r, g, b;
double available_w;
double factor;
cairo_save (cr);
foo_scroll_area_get_viewport (FOO_SCROLL_AREA (app->area), &viewport);
get_geometry (output, &w, &h);
#if 0
g_debug ("%s (%p) geometry %d %d %d primary=%d", output->name, output->name,
w, h, output->rate, output->primary);
#endif
viewport.height -= 2 * MARGIN;
viewport.width -= 2 * MARGIN;
gnome_rr_output_info_get_geometry (output, &output_x, &output_y, NULL, NULL);
x = output_x * scale + MARGIN + (viewport.width - total_w * scale) / 2.0;
y = output_y * scale + MARGIN + (viewport.height - total_h * scale) / 2.0;
#if 0
g_debug ("scaled: %f %f", x, y);
g_debug ("scale: %f", scale);
g_debug ("%f %f %f %f", x, y, w * scale + 0.5, h * scale + 0.5);
#endif
cairo_translate (cr,
x + (w * scale + 0.5) / 2,
y + (h * scale + 0.5) / 2);
/* rotation is already applied in get_geometry */
rotation = gnome_rr_output_info_get_rotation (output);
if (rotation & GNOME_RR_REFLECT_X)
cairo_scale (cr, -1, 1);
if (rotation & GNOME_RR_REFLECT_Y)
cairo_scale (cr, 1, -1);
cairo_translate (cr,
- x - (w * scale + 0.5) / 2,
- y - (h * scale + 0.5) / 2);
if (output == app->current_output)
{
GtkStyleContext *context;
GdkRGBA color;
context = gtk_widget_get_style_context (app->area);
gtk_style_context_get_background_color (context, GTK_STATE_FLAG_SELECTED, &color);
cairo_rectangle (cr, x - 2, y - 2, w * scale + 0.5 + 4, h * scale + 0.5 + 4);
cairo_set_line_width (cr, 4);
cairo_set_source_rgba (cr, color.red, color.green, color.blue, 0.5);
cairo_stroke (cr);
}
cairo_rectangle (cr, x, y, w * scale + 0.5, h * scale + 0.5);
cairo_clip_preserve (cr);
gnome_rr_labeler_get_color_for_output (app->labeler, output, &output_color);
r = output_color.red / 65535.0;
g = output_color.green / 65535.0;
b = output_color.blue / 65535.0;
if (!gnome_rr_output_info_is_active (output))
{
/* If the output is turned off, just darken the selected color */
color_shade (&r, &g, &b, 0.4);
}
cairo_set_source_rgba (cr, r, g, b, 1.0);
foo_scroll_area_add_input_from_fill (FOO_SCROLL_AREA (app->area),
cr, on_output_event, output);
cairo_fill (cr);
cairo_rectangle (cr, x + 0.5, y + 0.5, w * scale + 0.5 - 1, h * scale + 0.5 - 1);
cairo_set_line_width (cr, 1);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
cairo_stroke (cr);
cairo_set_line_width (cr, 2);
cairo_save (cr);
layout_set_font (layout, "Sans 10");
pango_layout_get_pixel_extents (layout, &ink_extent, &log_extent);
available_w = w * scale + 0.5 - 6; /* Same as the inner rectangle's width, minus 1 pixel of padding on each side */
if (available_w < ink_extent.width)
factor = available_w / ink_extent.width;
else
factor = 1.0;
cairo_move_to (cr,
x + ((w * scale + 0.5) - factor * log_extent.width) / 2,
y + ((h * scale + 0.5) - factor * log_extent.height) / 2);
cairo_scale (cr, factor, factor);
if (gnome_rr_output_info_is_active (output))
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
else
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
pango_cairo_show_layout (cr, layout);
g_object_unref (layout);
cairo_restore (cr);
if (gnome_rr_output_info_get_primary (output))
{
const char *clock_format;
char *text;
gboolean use_24;
GDateTime *dt;
GDesktopClockFormat value;
/* top bar */
cairo_rectangle (cr, x, y, w * scale + 0.5, TOP_BAR_HEIGHT);
cairo_set_source_rgb (cr, 0, 0, 0);
foo_scroll_area_add_input_from_fill (FOO_SCROLL_AREA (app->area),
cr,
(FooScrollAreaEventFunc) on_top_bar_event,
app);
cairo_fill (cr);
/* clock */
/* FIXME: set 12/24 hour */
value = g_settings_get_enum (app->clock_settings, CLOCK_FORMAT_KEY);
use_24 = value == G_DESKTOP_CLOCK_FORMAT_24H;
if (use_24)
clock_format = _("%a %R");
else
clock_format = _("%a %l:%M %p");
dt = g_date_time_new_now_local ();
text = g_date_time_format (dt, clock_format);
g_date_time_unref (dt);
layout = gtk_widget_create_pango_layout (GTK_WIDGET (app->area), text);
g_free (text);
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
layout_set_font (layout, "Sans 4");
pango_layout_get_pixel_extents (layout, &ink_extent, &log_extent);
if (available_w < ink_extent.width)
factor = available_w / ink_extent.width;
else
factor = 1.0;
cairo_move_to (cr,
x + ((w * scale + 0.5) - factor * log_extent.width) / 2,
y + (TOP_BAR_HEIGHT - factor * log_extent.height) / 2);
cairo_scale (cr, factor, factor);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
pango_cairo_show_layout (cr, layout);
g_object_unref (layout);
}
cairo_restore (cr);
}
static void
on_area_paint (FooScrollArea *area,
cairo_t *cr,
gpointer data)
{
App *app = data;
GList *connected_outputs = NULL;
GList *list;
paint_background (area, cr);
if (!app->current_configuration)
return;
connected_outputs = list_connected_outputs (app, NULL, NULL);
for (list = connected_outputs; list != NULL; list = list->next)
{
paint_output (app, cr, g_list_position (connected_outputs, list));
if (gnome_rr_config_get_clone (app->current_configuration))
break;
}
}
static void
make_text_combo (GtkWidget *widget, int sort_column)
{
GtkComboBox *box = GTK_COMBO_BOX (widget);
GtkListStore *store = gtk_list_store_new (
6,
G_TYPE_STRING, /* Text */
G_TYPE_INT, /* Width */
G_TYPE_INT, /* Height */
G_TYPE_INT, /* Frequency */
G_TYPE_INT, /* Width * Height */
G_TYPE_INT); /* Rotation */
GtkCellRenderer *cell;
gtk_cell_layout_clear (GTK_CELL_LAYOUT (widget));
gtk_combo_box_set_model (box, GTK_TREE_MODEL (store));
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (box), cell, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (box), cell,
"text", 0,
NULL);
if (sort_column != -1)
{
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store),
sort_column,
GTK_SORT_DESCENDING);
}
}
static void
compute_virtual_size_for_configuration (GnomeRRConfig *config, int *ret_width, int *ret_height)
{
int i;
int width, height;
int output_x, output_y, output_width, output_height;
GnomeRROutputInfo **outputs;
width = height = 0;
outputs = gnome_rr_config_get_outputs (config);
for (i = 0; outputs[i] != NULL; i++)
{
if (gnome_rr_output_info_is_active (outputs[i]))
{
gnome_rr_output_info_get_geometry (outputs[i], &output_x, &output_y, &output_width, &output_height);
width = MAX (width, output_x + output_width);
height = MAX (height, output_y + output_height);
}
}
*ret_width = width;
*ret_height = height;
}
static void
check_required_virtual_size (App *app)
{
int req_width, req_height;
int min_width, max_width;
int min_height, max_height;
compute_virtual_size_for_configuration (app->current_configuration, &req_width, &req_height);
gnome_rr_screen_get_ranges (app->screen, &min_width, &max_width, &min_height, &max_height);
#if 0
g_debug ("X Server supports:");
g_debug ("min_width = %d, max_width = %d", min_width, max_width);
g_debug ("min_height = %d, max_height = %d", min_height, max_height);
g_debug ("Requesting size of %dx%d", req_width, req_height);
#endif
if (!(min_width <= req_width && req_width <= max_width
&& min_height <= req_height && req_height <= max_height))
{
/* FIXME: present a useful dialog, maybe even before the user tries to Apply */
#if 0
g_debug ("Your X server needs a larger Virtual size!");
#endif
}
}
static void
begin_version2_apply_configuration (App *app, GdkWindow *parent_window, guint32 timestamp)
{
XID parent_window_xid;
parent_window_xid = GDK_WINDOW_XID (parent_window);
app->proxy = dbus_g_proxy_new_for_name (app->connection,
"org.gnome.SettingsDaemon",
"/org/gnome/SettingsDaemon/XRANDR",
"org.gnome.SettingsDaemon.XRANDR_2");
g_assert (app->proxy != NULL); /* that call does not fail unless we pass bogus names */
app->proxy_call = dbus_g_proxy_begin_call (app->proxy, "ApplyConfiguration",
apply_configuration_returned_cb, app,
NULL,
G_TYPE_INT64, (gint64) parent_window_xid,
G_TYPE_INT64, (gint64) timestamp,
G_TYPE_INVALID,
G_TYPE_INVALID);
/* FIXME: we don't check for app->proxy_call == NULL, which could happen if
* the connection was disconnected. This is left as an exercise for the
* reader.
*/
}
static void
ensure_current_configuration_is_saved (void)
{
GnomeRRScreen *rr_screen;
GnomeRRConfig *rr_config;
/* Normally, gnome_rr_config_save() creates a backup file based on the
* old monitors.xml. However, if *that* file didn't exist, there is
* nothing from which to create a backup. So, here we'll save the
* current/unchanged configuration and then let our caller call
* gnome_rr_config_save() again with the new/changed configuration, so
* that there *will* be a backup file in the end.
*/
rr_screen = gnome_rr_screen_new (gdk_screen_get_default (), NULL); /* NULL-GError */
if (!rr_screen)
return;
rr_config = gnome_rr_config_new_current (rr_screen, NULL);
gnome_rr_config_ensure_primary (rr_config);
gnome_rr_config_save (rr_config, NULL); /* NULL-GError */
g_object_unref (rr_config);
g_object_unref (rr_screen);
}
/* Callback for dbus_g_proxy_begin_call() */
static void
apply_configuration_returned_cb (DBusGProxy *proxy,
DBusGProxyCall *call_id,
void *data)
{
App *app = data;
gboolean success;
GError *error;
g_assert (call_id == app->proxy_call);
error = NULL;
success = dbus_g_proxy_end_call (proxy, call_id, &error, G_TYPE_INVALID);
if (!success) {
/* We don't pop up an error message; gnome-settings-daemon already does that
* in case the selected RANDR configuration could not be applied.
*/
g_error_free (error);
}
g_object_unref (app->proxy);
app->proxy = NULL;
dbus_g_connection_unref (app->connection);
app->connection = NULL;
app->proxy_call = NULL;
gtk_widget_set_sensitive (app->panel, TRUE);
}
static gboolean
sanitize_and_save_configuration (App *app)
{
GError *error;
gnome_rr_config_sanitize (app->current_configuration);
gnome_rr_config_ensure_primary (app->current_configuration);
check_required_virtual_size (app);
foo_scroll_area_invalidate (FOO_SCROLL_AREA (app->area));
ensure_current_configuration_is_saved ();
error = NULL;
if (!gnome_rr_config_save (app->current_configuration, &error))
{
error_message (app, _("Could not save the monitor configuration"), error->message);
g_error_free (error);
return FALSE;
}
return TRUE;
}
static void
apply (App *app)
{
GError *error = NULL;
GdkWindow *window;
app->apply_button_clicked_timestamp = gtk_get_current_event_time ();
if (!sanitize_and_save_configuration (app))
return;
g_assert (app->connection == NULL);
g_assert (app->proxy == NULL);
g_assert (app->proxy_call == NULL);
app->connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
if (app->connection == NULL) {
error_message (app, _("Could not get session bus while applying display configuration"), error->message);
g_error_free (error);
return;
}
gtk_widget_set_sensitive (app->panel, FALSE);
window = gtk_widget_get_window (gtk_widget_get_toplevel (app->panel));
begin_version2_apply_configuration (app, window,
app->apply_button_clicked_timestamp);
}
#if 0
/* Returns whether the graphics driver doesn't advertise RANDR 1.2 features, and just 1.0 */
static gboolean
driver_is_randr_10 (GnomeRRConfig *config)
{
/* In the Xorg code, see xserver/randr/rrinfo.c:RRScanOldConfig(). It gets
* called when the graphics driver doesn't support RANDR 1.2 yet, just 1.0.
* In that case, the X server's base code (which supports RANDR 1.2) will
* simulate having a single output called "default". For drivers that *do*
* support RANDR 1.2, the separate outputs will be named differently, we
* hope.
*
* This heuristic is courtesy of Dirk Mueller <dmueller@suse.de>
*
* FIXME: however, we don't even check for XRRQueryVersion() returning 1.2, neither
* here nor in gnome-desktop/libgnomedesktop*.c. Do we need to check for that,
* or is gnome_rr_screen_new()'s return value sufficient?
*/
return (count_all_outputs (config) == 1 && strcmp (gnome_rr_output_info_get_name (gnome_rr_config_get_outputs (config)[0]), "default") == 0);
}
#endif
static void
on_detect_displays (GtkWidget *widget, gpointer data)
{
App *app = data;
GError *error;
error = NULL;
if (!gnome_rr_screen_refresh (app->screen, &error)) {
if (error) {
error_message (app, _("Could not detect displays"), error->message);
g_error_free (error);
}
}
}
static GnomeRROutputInfo *
get_nearest_output (GnomeRRConfig *configuration, int x, int y)
{
int i;
int nearest_index;
int nearest_dist;
GnomeRROutputInfo **outputs;
nearest_index = -1;
nearest_dist = G_MAXINT;
outputs = gnome_rr_config_get_outputs (configuration);
for (i = 0; outputs[i] != NULL; i++)
{
int dist_x, dist_y;
int output_x, output_y, output_width, output_height;
if (!(gnome_rr_output_info_is_connected (outputs[i]) && gnome_rr_output_info_is_active (outputs[i])))
continue;
gnome_rr_output_info_get_geometry (outputs[i], &output_x, &output_y, &output_width, &output_height);
if (x < output_x)
dist_x = output_x - x;
else if (x >= output_x + output_width)
dist_x = x - (output_x + output_width) + 1;
else
dist_x = 0;
if (y < output_y)
dist_y = output_y - y;
else if (y >= output_y + output_height)
dist_y = y - (output_y + output_height) + 1;
else
dist_y = 0;
if (MIN (dist_x, dist_y) < nearest_dist)
{
nearest_dist = MIN (dist_x, dist_y);
nearest_index = i;
}
}
if (nearest_index != -1)
return outputs[nearest_index];
else
return NULL;
}
/* Gets the output that contains the largest intersection with the window.
* Logic stolen from gdk_screen_get_monitor_at_window().
*/
static GnomeRROutputInfo *
get_output_for_window (GnomeRRConfig *configuration, GdkWindow *window)
{
GdkRectangle win_rect;
int i;
int largest_area;
int largest_index;
GnomeRROutputInfo **outputs;
gdk_window_get_geometry (window, &win_rect.x, &win_rect.y, &win_rect.width, &win_rect.height);
gdk_window_get_origin (window, &win_rect.x, &win_rect.y);
largest_area = 0;
largest_index = -1;
outputs = gnome_rr_config_get_outputs (configuration);
for (i = 0; outputs[i] != NULL; i++)
{
GdkRectangle output_rect, intersection;
gnome_rr_output_info_get_geometry (outputs[i], &output_rect.x, &output_rect.y, &output_rect.width, &output_rect.height);
if (gnome_rr_output_info_is_connected (outputs[i]) && gdk_rectangle_intersect (&win_rect, &output_rect, &intersection))
{
int area;
area = intersection.width * intersection.height;
if (area > largest_area)
{
largest_area = area;
largest_index = i;
}
}
}
if (largest_index != -1)
return outputs[largest_index];
else
return get_nearest_output (configuration,
win_rect.x + win_rect.width / 2,
win_rect.y + win_rect.height / 2);
}
static gboolean
dialog_focus_in_cb (GtkWidget *widget, GdkEvent *event, gpointer data)
{
App *app = data;
if (app->labeler)
gnome_rr_labeler_show (app->labeler);
return FALSE;
}
static gboolean
dialog_focus_out_cb (GtkWidget *widget, GdkEvent *event, gpointer data)
{
App *app = data;
if (app->labeler)
gnome_rr_labeler_hide (app->labeler);
return FALSE;
}
static void
on_toplevel_realized (GtkWidget *widget,
App *app)
{
app->current_output = get_output_for_window (app->current_configuration,
gtk_widget_get_window (widget));
rebuild_gui (app);
}
/* We select the current output, i.e. select the one being edited, based on
* which output is showing the configuration dialog.
*/
static void
select_current_output_from_dialog_position (App *app)
{
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (app->panel);
if (gtk_widget_get_realized (toplevel)) {
app->current_output = get_output_for_window (app->current_configuration,
gtk_widget_get_window (toplevel));
rebuild_gui (app);
} else {
g_signal_connect (toplevel, "realize", G_CALLBACK (on_toplevel_realized), app);
app->current_output = NULL;
}
}
/* This is a GtkWidget::map-event handler. We wait for the display-properties
* dialog to be mapped, and then we select the output which corresponds to the
* monitor on which the dialog is being shown.
*/
static gboolean
dialog_map_event_cb (GtkWidget *widget, GdkEventAny *event, gpointer data)
{
App *app = data;
select_current_output_from_dialog_position (app);
return FALSE;
}
static GtkWidget*
_gtk_builder_get_widget (GtkBuilder *builder, const gchar *name)
{
return GTK_WIDGET (gtk_builder_get_object (builder, name));
}
static void
destroy_app (App *app)
{
g_object_unref (app->screen);
g_object_unref (app->builder);
if (app->clock_settings != NULL)
g_object_unref (app->clock_settings);
gnome_rr_labeler_hide (app->labeler);
g_object_unref (app->labeler);
g_free (app);
}
GtkWidget*
run_application (void)
{
#ifndef UIDIR
#define UIDIR "."
#endif
#define UI_FILE UIDIR "/display-capplet.ui"
GtkBuilder *builder;
GtkWidget *align;
GError *error;
gchar *objects[] = {"display-panel", "rotation-liststore", NULL};
App *app;
app = g_new0 (App, 1);
error = NULL;
app->builder = builder = gtk_builder_new ();
if (!gtk_builder_add_objects_from_file (builder, UI_FILE, objects, &error))
{
g_warning ("Could not parse UI definition: %s", error->message);
g_error_free (error);
g_object_unref (builder);
return NULL;
}
app->screen = gnome_rr_screen_new (gdk_screen_get_default (), &error);
g_signal_connect (app->screen, "changed", G_CALLBACK (on_screen_changed), app);
if (!app->screen)
{
error_message (NULL, _("Could not get screen information"), error->message);
g_error_free (error);
g_object_unref (builder);
return NULL;
}
app->clock_settings = g_settings_new (CLOCK_SCHEMA);
app->panel = _gtk_builder_get_widget (builder, "display-panel");
g_signal_connect_after (app->panel, "focus-in-event",
G_CALLBACK (dialog_focus_in_cb), app);
g_signal_connect_after (app->panel, "focus-out-event",
G_CALLBACK (dialog_focus_out_cb), app);
if (!app->panel)
g_warning ("Missing display-panel object");
g_signal_connect_after (app->panel, "show",
G_CALLBACK (dialog_map_event_cb), app);
app->current_monitor_event_box = _gtk_builder_get_widget (builder,
"current_monitor_event_box");
app->current_monitor_label = _gtk_builder_get_widget (builder,
"current_monitor_label");
app->monitor_switch = _gtk_builder_get_widget (builder,
"monitor_switch");
g_signal_connect (app->monitor_switch, "notify::active",
G_CALLBACK (monitor_switch_active_cb), app);
app->resolution_combo = _gtk_builder_get_widget (builder,
"resolution_combo");
g_signal_connect (app->resolution_combo, "changed",
G_CALLBACK (on_resolution_changed), app);
app->rotation_combo = _gtk_builder_get_widget (builder, "rotation_combo");
g_signal_connect (app->rotation_combo, "changed",
G_CALLBACK (on_rotation_changed), app);
app->clone_checkbox = _gtk_builder_get_widget (builder, "clone_checkbox");
g_signal_connect (app->clone_checkbox, "toggled",
G_CALLBACK (on_clone_changed), app);
app->clone_label = _gtk_builder_get_widget (builder, "clone_resolution_warning_label");
g_signal_connect (_gtk_builder_get_widget (builder, "detect_displays_button"),
"clicked", G_CALLBACK (on_detect_displays), app);
make_text_combo (app->resolution_combo, 4);
make_text_combo (app->rotation_combo, -1);
/* Scroll Area */
app->area = (GtkWidget *)foo_scroll_area_new ();
g_object_set_data (G_OBJECT (app->area), "app", app);
set_monitors_tooltip (app, FALSE);
/* FIXME: this should be computed dynamically */
foo_scroll_area_set_min_size (FOO_SCROLL_AREA (app->area), 0, 200);
gtk_widget_show (app->area);
g_signal_connect (app->area, "paint",
G_CALLBACK (on_area_paint), app);
g_signal_connect (app->area, "viewport_changed",
G_CALLBACK (on_viewport_changed), app);
align = _gtk_builder_get_widget (builder, "align");
gtk_container_add (GTK_CONTAINER (align), app->area);
on_screen_changed (app->screen, app);
g_signal_connect_swapped (_gtk_builder_get_widget (builder, "apply_button"),
"clicked", G_CALLBACK (apply), app);
g_object_weak_ref (G_OBJECT (app->panel), (GWeakNotify) destroy_app, app);
return app->panel;
}
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