[gnome-control-center] display: Simplify panel code
- From: Bastien Nocera <hadess src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-control-center] display: Simplify panel code
- Date: Thu, 25 Aug 2011 18:41:16 +0000 (UTC)
commit 558325f6a43e80682d1025ecb91a00b28fa1f414
Author: Bastien Nocera <hadess hadess net>
Date: Thu Aug 25 18:32:15 2011 +0100
display: Simplify panel code
By merging the "capplet" code back into the main panel code.
panels/display/Makefile.am | 2 -
panels/display/cc-display-panel.c | 2525 ++++++++++++++++++++++++++++++++++++-
panels/display/xrandr-capplet.c | 2567 -------------------------------------
panels/display/xrandr-capplet.h | 3 -
4 files changed, 2515 insertions(+), 2582 deletions(-)
---
diff --git a/panels/display/Makefile.am b/panels/display/Makefile.am
index 510c676..cd4e6e0 100644
--- a/panels/display/Makefile.am
+++ b/panels/display/Makefile.am
@@ -19,8 +19,6 @@ libdisplay_la_SOURCES = \
display-module.c \
cc-display-panel.c \
cc-display-panel.h \
- xrandr-capplet.c \
- xrandr-capplet.h \
scrollarea.c \
scrollarea.h \
$(MARSHALFILES)
diff --git a/panels/display/cc-display-panel.c b/panels/display/cc-display-panel.c
index 342a780..edcaf06 100644
--- a/panels/display/cc-display-panel.c
+++ b/panels/display/cc-display-panel.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010 Intel, Inc
+ * 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
@@ -15,24 +15,98 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
- * Author: Thomas Wood <thomas wood intel com>
+ * Author: Soren Sandmann <sandmann redhat com>
*
*/
+#include <config.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+
#include "cc-display-panel.h"
-#include "xrandr-capplet.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>
G_DEFINE_DYNAMIC_TYPE (CcDisplayPanel, cc_display_panel, CC_TYPE_PANEL)
#define DISPLAY_PANEL_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), CC_TYPE_DISPLAY_PANEL, CcDisplayPanelPrivate))
+#define WID(s) GTK_WIDGET (gtk_builder_get_object (self->priv->builder, s))
+
+#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
+
struct _CcDisplayPanelPrivate
{
- gpointer dummy;
+ 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;
};
+typedef struct
+{
+ int grab_x;
+ int grab_y;
+ int output_x;
+ int output_y;
+} GrabInfo;
+
+static void rebuild_gui (CcDisplayPanel *self);
+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 (CcDisplayPanel *self);
+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 (CcDisplayPanel *self, GnomeRROutputInfo *info, int width, int height);
static void
cc_display_panel_get_property (GObject *object,
@@ -69,6 +143,19 @@ cc_display_panel_dispose (GObject *object)
static void
cc_display_panel_finalize (GObject *object)
{
+ CcDisplayPanel *self;
+
+ self = CC_DISPLAY_PANEL (object);
+
+ g_object_unref (self->priv->screen);
+ g_object_unref (self->priv->builder);
+
+ if (self->priv->clock_settings != NULL)
+ g_object_unref (self->priv->clock_settings);
+
+ gnome_rr_labeler_hide (self->priv->labeler);
+ g_object_unref (self->priv->labeler);
+
G_OBJECT_CLASS (cc_display_panel_parent_class)->finalize (object);
}
@@ -91,16 +178,2434 @@ cc_display_panel_class_finalize (CcDisplayPanelClass *klass)
}
static void
-cc_display_panel_init (CcDisplayPanel *self)
+error_message (CcDisplayPanel *self, const char *primary_text, const char *secondary_text)
{
- GtkWidget *widget;
+ GtkWidget *toplevel;
+ GtkWidget *dialog;
- self->priv = DISPLAY_PANEL_PRIVATE (self);
+ if (self && self->priv->panel)
+ toplevel = gtk_widget_get_toplevel (self->priv->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;
+ CcDisplayPanel *self = data;
+
+ current = gnome_rr_config_new_current (self->priv->screen, NULL);
+ gnome_rr_config_ensure_primary (current);
+
+ if (self->priv->current_configuration)
+ g_object_unref (self->priv->current_configuration);
+
+ self->priv->current_configuration = current;
+ self->priv->current_output = NULL;
+
+ if (self->priv->labeler) {
+ gnome_rr_labeler_hide (self->priv->labeler);
+ g_object_unref (self->priv->labeler);
+ }
+
+ self->priv->labeler = gnome_rr_labeler_new (self->priv->current_configuration);
+ if (gtk_widget_has_focus (self->priv->panel))
+ gnome_rr_labeler_show (self->priv->labeler);
+
+ select_current_output_from_dialog_position (self);
+}
+
+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 (CcDisplayPanel *self)
+{
+ GnomeRROutput *output;
+
+ if (gnome_rr_config_get_clone (self->priv->current_configuration))
+ {
+ return gnome_rr_screen_list_clone_modes (self->priv->screen);
+ }
+ else
+ {
+ if (!self->priv->current_output)
+ return NULL;
+
+ output = gnome_rr_screen_get_output_by_name (self->priv->screen,
+ gnome_rr_output_info_get_name (self->priv->current_output));
+
+ if (!output)
+ return NULL;
+
+ return gnome_rr_output_list_modes (output);
+ }
+}
+
+static void
+rebuild_rotation_combo (CcDisplayPanel *self)
+{
+ 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 (self->priv->rotation_combo);
+
+ gtk_widget_set_sensitive (self->priv->rotation_combo,
+ self->priv->current_output && gnome_rr_output_info_is_active (self->priv->current_output));
+
+ if (!self->priv->current_output)
+ return;
+
+ current = gnome_rr_output_info_get_rotation (self->priv->current_output);
+
+ selection = NULL;
+ for (i = 0; i < G_N_ELEMENTS (rotations); ++i)
+ {
+ const RotationInfo *info = &(rotations[i]);
+
+ gnome_rr_output_info_set_rotation (self->priv->current_output, info->rotation);
+
+ /* NULL-GError --- FIXME: we should say why this rotation is not available! */
+ if (gnome_rr_config_applicable (self->priv->current_configuration, self->priv->screen, NULL))
+ {
+ add_key (self->priv->rotation_combo, _(info->name), 0, 0, 0, info->rotation);
+
+ if (info->rotation == current)
+ selection = _(info->name);
+ }
+ }
+
+ gnome_rr_output_info_set_rotation (self->priv->current_output, current);
+
+ if (!(selection && combo_select (self->priv->rotation_combo, selection)))
+ combo_select (self->priv->rotation_combo, _("Normal"));
+}
+
+static int
+count_active_outputs (CcDisplayPanel *self)
+{
+ int i, count = 0;
+ GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (self->priv->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 (CcDisplayPanel *self)
+{
+ int clone_width, clone_height;
+ gboolean have_clone_size;
+ gboolean mirror_is_supported;
+
+ mirror_is_supported = FALSE;
+
+ have_clone_size = get_clone_size (self->priv->screen, &clone_width, &clone_height);
+
+ if (have_clone_size) {
+ int i;
+ int num_outputs_with_clone_size;
+ GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (self->priv->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 (self, 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 (CcDisplayPanel *self)
+{
+ gboolean mirror_is_active;
+ gboolean mirror_is_supported;
+
+ g_signal_handlers_block_by_func (self->priv->clone_checkbox, G_CALLBACK (on_clone_changed), self);
+
+ mirror_is_active = self->priv->current_configuration && gnome_rr_config_get_clone (self->priv->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 (self);
+
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (self->priv->clone_checkbox), mirror_is_active);
+ gtk_widget_set_sensitive (self->priv->clone_checkbox, mirror_is_supported);
+ gtk_widget_set_sensitive (self->priv->clone_label, mirror_is_supported);
+
+ g_signal_handlers_unblock_by_func (self->priv->clone_checkbox, G_CALLBACK (on_clone_changed), self);
+}
+
+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 (CcDisplayPanel *self)
+{
+ char *str, *tmp;
+ GdkColor color;
+ gboolean use_color;
+
+ if (self->priv->current_output)
+ {
+ if (gnome_rr_config_get_clone (self->priv->current_configuration))
+ tmp = mirror_monitor_name ();
+ else
+ tmp = g_strdup (gnome_rr_output_info_get_display_name (self->priv->current_output));
+
+ str = g_strdup_printf ("<b>%s</b>", tmp);
+ gnome_rr_labeler_get_color_for_output (self->priv->labeler, self->priv->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 (self->priv->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 (self->priv->current_monitor_event_box,
+ gtk_widget_get_state_flags (self->priv->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 (self->priv->current_monitor_label,
+ gtk_widget_get_state_flags (self->priv->current_monitor_label),
+ &black);
+ }
+ else
+ {
+ /* Remove any modifications we did on the label's color */
+ gtk_widget_override_color (self->priv->current_monitor_label,
+ gtk_widget_get_state_flags (self->priv->current_monitor_label),
+ NULL);
+ }
+
+ gtk_event_box_set_visible_window (GTK_EVENT_BOX (self->priv->current_monitor_event_box), use_color);
+}
+
+static void
+rebuild_on_off_radios (CcDisplayPanel *self)
+{
+ gboolean sensitive;
+ gboolean on_active;
+
+ g_signal_handlers_block_by_func (self->priv->monitor_switch, G_CALLBACK (monitor_switch_active_cb), self);
+
+ sensitive = FALSE;
+ on_active = FALSE;
+
+ if (!gnome_rr_config_get_clone (self->priv->current_configuration) && self->priv->current_output)
+ {
+ if (count_active_outputs (self) > 1 || !gnome_rr_output_info_is_active (self->priv->current_output))
+ sensitive = TRUE;
+ else
+ sensitive = FALSE;
+
+ on_active = gnome_rr_output_info_is_active (self->priv->current_output);
+ }
+
+ gtk_widget_set_sensitive (self->priv->monitor_switch, sensitive);
+
+ gtk_switch_set_active (GTK_SWITCH (self->priv->monitor_switch), on_active);
+
+ g_signal_handlers_unblock_by_func (self->priv->monitor_switch, G_CALLBACK (monitor_switch_active_cb), self);
+}
+
+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 (CcDisplayPanel *self)
+{
+ int i;
+ GnomeRRMode **modes;
+ const char *current;
+ int output_width, output_height;
+
+ clear_combo (self->priv->resolution_combo);
+
+ if (!(modes = get_current_modes (self))
+ || !self->priv->current_output
+ || !gnome_rr_output_info_is_active (self->priv->current_output))
+ {
+ gtk_widget_set_sensitive (self->priv->resolution_combo, FALSE);
+ return;
+ }
+
+ g_assert (self->priv->current_output != NULL);
+
+ gnome_rr_output_info_get_geometry (self->priv->current_output, NULL, NULL, &output_width, &output_height);
+ g_assert (output_width != 0 && output_height != 0);
+
+ gtk_widget_set_sensitive (self->priv->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 (self->priv->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 (self->priv->resolution_combo, current))
+ {
+ int best_w, best_h;
+
+ find_best_mode (modes, &best_w, &best_h);
+ combo_select (self->priv->resolution_combo, idle_free (make_resolution_string (best_w, best_h)));
+ }
+}
+
+static void
+rebuild_gui (CcDisplayPanel *self)
+{
+ /* We would break spectacularly if we recursed, so
+ * just assert if that happens
+ */
+ g_assert (self->priv->ignore_gui_changes == FALSE);
+
+ self->priv->ignore_gui_changes = TRUE;
+
+ rebuild_mirror_screens (self);
+ rebuild_current_monitor_label (self);
+ rebuild_on_off_radios (self);
+ rebuild_resolution_combo (self);
+ rebuild_rotation_combo (self);
+
+ self->priv->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)
+{
+ CcDisplayPanel *self = data;
+ GnomeRRRotation rotation;
+
+ if (!self->priv->current_output)
+ return;
+
+ if (get_mode (self->priv->rotation_combo, NULL, NULL, NULL, &rotation))
+ gnome_rr_output_info_set_rotation (self->priv->current_output, rotation);
+
+ foo_scroll_area_invalidate (FOO_SCROLL_AREA (self->priv->area));
+}
+
+static void
+select_resolution_for_current_output (CcDisplayPanel *self)
+{
+ GnomeRRMode **modes;
+ int width, height;
+ int x,y;
+ gnome_rr_output_info_get_geometry (self->priv->current_output, &x, &y, NULL, NULL);
+
+ width = gnome_rr_output_info_get_preferred_width (self->priv->current_output);
+ height = gnome_rr_output_info_get_preferred_height (self->priv->current_output);
+
+ if (width != 0 && height != 0)
+ {
+ gnome_rr_output_info_set_geometry (self->priv->current_output, x, y, width, height);
+ return;
+ }
+
+ modes = get_current_modes (self);
+ if (!modes)
+ return;
+
+ find_best_mode (modes, &width, &height);
+
+ gnome_rr_output_info_set_geometry (self->priv->current_output, x, y, width, height);
+}
+
+static void
+monitor_switch_active_cb (GObject *object,
+ GParamSpec *pspec,
+ gpointer data)
+{
+ CcDisplayPanel *self = data;
+ gboolean value;
+
+ if (!self->priv->current_output)
+ return;
+
+ value = gtk_switch_get_active (GTK_SWITCH (object));
+
+ if (value)
+ {
+ gnome_rr_output_info_set_active (self->priv->current_output, TRUE);
+ select_resolution_for_current_output (self);
+ }
+ else
+ {
+ gnome_rr_output_info_set_active (self->priv->current_output, FALSE);
+ gnome_rr_config_ensure_primary (self->priv->current_configuration);
+ }
+
+ rebuild_gui (self);
+ foo_scroll_area_invalidate (FOO_SCROLL_AREA (self->priv->area));
+}
+
+static void
+realign_outputs_after_resolution_change (CcDisplayPanel *self, 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 (self->priv->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 (self->priv->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)
+{
+ CcDisplayPanel *self = data;
+ int old_width, old_height;
+ int x,y;
+ int width;
+ int height;
+
+ if (!self->priv->current_output)
+ return;
+
+ gnome_rr_output_info_get_geometry (self->priv->current_output, &x, &y, &old_width, &old_height);
+
+ if (get_mode (self->priv->resolution_combo, &width, &height, NULL, NULL))
+ {
+ gnome_rr_output_info_set_geometry (self->priv->current_output, x, y, width, height);
+
+ if (width == 0 || height == 0)
+ gnome_rr_output_info_set_active (self->priv->current_output, FALSE);
+ else
+ gnome_rr_output_info_set_active (self->priv->current_output, TRUE);
+ }
+
+ realign_outputs_after_resolution_change (self, self->priv->current_output, old_width, old_height);
+
+ rebuild_rotation_combo (self);
+
+ foo_scroll_area_invalidate (FOO_SCROLL_AREA (self->priv->area));
+}
+
+static void
+lay_out_outputs_horizontally (CcDisplayPanel *self)
+{
+ 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 (self->priv->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 (CcDisplayPanel *self, 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 (self->priv->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)
+{
+ CcDisplayPanel *self = data;
+
+ gnome_rr_config_set_clone (self->priv->current_configuration, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (self->priv->clone_checkbox)));
+
+ if (gnome_rr_config_get_clone (self->priv->current_configuration))
+ {
+ int i;
+ int width, height;
+ GnomeRROutputInfo **outputs = gnome_rr_config_get_outputs (self->priv->current_configuration);
+
+ for (i = 0; outputs[i]; ++i)
+ {
+ if (gnome_rr_output_info_is_connected (outputs[i]))
+ {
+ self->priv->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 (self->priv->screen, &width, &height);
+
+ for (i = 0; outputs[i]; i++) {
+ int x, y;
+ if (output_info_supports_mode (self, 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 (self->priv->current_output, self->priv->current_configuration))
+ lay_out_outputs_horizontally (self);
+ }
+
+ rebuild_gui (self);
+}
+
+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 (CcDisplayPanel *self, 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 (self->priv->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 (CcDisplayPanel *self)
+{
+ GList *connected_outputs = list_connected_outputs (self, NULL, NULL);
+ int n = g_list_length (connected_outputs);
+
+ g_list_free (connected_outputs);
+
+ return n;
+}
+
+static double
+compute_scale (CcDisplayPanel *self)
+{
+ 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 (self->priv->area), &viewport);
+
+ connected_outputs = list_connected_outputs (self, &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;
+}
+
+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 (CcDisplayPanel *self, gboolean is_dragging)
+{
+ const char *text;
+
+ if (is_dragging)
+ text = NULL;
+ else
+ text = _("Drag to change primary display.");
+
+ gtk_widget_set_tooltip_text (self->priv->area, text);
+}
+
+static void
+on_top_bar_event (FooScrollArea *area,
+ FooScrollAreaEvent *event,
+ CcDisplayPanel *self)
+{
+ /* 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 (self->priv->current_configuration) && get_n_connected (self) > 1)
+ set_cursor (GTK_WIDGET (area), GDK_HAND1);
+
+ if (event->type == FOO_BUTTON_PRESS)
+ {
+ rebuild_gui (self);
+ set_top_bar_tooltip (self, TRUE);
+
+ if (!gnome_rr_config_get_clone (self->priv->current_configuration) && get_n_connected (self) > 1)
+ {
+ self->priv->dragging_top_bar = TRUE;
+ foo_scroll_area_begin_grab (area, (FooScrollAreaEventFunc) on_top_bar_event, self);
+ }
+
+ 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);
+ self->priv->dragging_top_bar = FALSE;
+ set_top_bar_tooltip (self, FALSE);
+ }
+
+ foo_scroll_area_invalidate (area);
+ }
+ }
+}
+
+static void
+set_monitors_tooltip (CcDisplayPanel *self, 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 (self->priv->area, text);
+}
+
+static void
+set_primary_output (CcDisplayPanel *self,
+ GnomeRROutputInfo *output)
+{
+ int i;
+ GnomeRROutputInfo **outputs;
+
+ outputs = gnome_rr_config_get_outputs (self->priv->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;
+ CcDisplayPanel *self = g_object_get_data (G_OBJECT (area), "panel");
+
+ if (event->type == FOO_DRAG_HOVER)
+ {
+ if (gnome_rr_output_info_is_active (output) && self->priv->dragging_top_bar)
+ set_primary_output (self, 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 (self->priv->current_configuration) && get_n_connected (self) > 1)
+ set_cursor (GTK_WIDGET (area), GDK_FLEUR);
+
+ if (event->type == FOO_BUTTON_PRESS)
+ {
+ GrabInfo *info;
+
+ self->priv->current_output = output;
+
+ rebuild_gui (self);
+ set_monitors_tooltip (self, TRUE);
+
+ if (!gnome_rr_config_get_clone (self->priv->current_configuration) && get_n_connected (self) > 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 (self);
+ 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 (self->priv->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 (self->priv->current_configuration, new_edges);
+
+ if (gnome_rr_config_is_aligned (self->priv->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 (self, 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 (CcDisplayPanel *self,
+ GnomeRROutputInfo *output)
+{
+ PangoLayout *layout;
+ char *text;
+
+ if (gnome_rr_config_get_clone (self->priv->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 (self->priv->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 (CcDisplayPanel *self, cairo_t *cr, int i)
+{
+ int w, h;
+ double scale = compute_scale (self);
+ double x, y;
+ int output_x, output_y;
+ GnomeRRRotation rotation;
+ int total_w, total_h;
+ GList *connected_outputs = list_connected_outputs (self, &total_w, &total_h);
+ GnomeRROutputInfo *output = g_list_nth (connected_outputs, i)->data;
+ PangoLayout *layout = get_display_name (self, 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 (self->priv->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 == self->priv->current_output)
+ {
+ GtkStyleContext *context;
+ GdkRGBA color;
+
+ context = gtk_widget_get_style_context (self->priv->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 (self->priv->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 (self->priv->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 (self->priv->area),
+ cr,
+ (FooScrollAreaEventFunc) on_top_bar_event,
+ self);
+
+ cairo_fill (cr);
+
+ /* clock */
+ value = g_settings_get_enum (self->priv->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 (self->priv->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)
+{
+ CcDisplayPanel *self = data;
+ GList *connected_outputs = NULL;
+ GList *list;
+
+ paint_background (area, cr);
+
+ if (!self->priv->current_configuration)
+ return;
+
+ connected_outputs = list_connected_outputs (self, NULL, NULL);
+
+ for (list = connected_outputs; list != NULL; list = list->next)
+ {
+ paint_output (self, cr, g_list_position (connected_outputs, list));
+
+ if (gnome_rr_config_get_clone (self->priv->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 (CcDisplayPanel *self)
+{
+ int req_width, req_height;
+ int min_width, max_width;
+ int min_height, max_height;
+
+ compute_virtual_size_for_configuration (self->priv->current_configuration, &req_width, &req_height);
+
+ gnome_rr_screen_get_ranges (self->priv->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 (CcDisplayPanel *self, GdkWindow *parent_window, guint32 timestamp)
+{
+ XID parent_window_xid;
+
+ parent_window_xid = GDK_WINDOW_XID (parent_window);
+
+ self->priv->proxy = dbus_g_proxy_new_for_name (self->priv->connection,
+ "org.gnome.SettingsDaemon",
+ "/org/gnome/SettingsDaemon/XRANDR",
+ "org.gnome.SettingsDaemon.XRANDR_2");
+ g_assert (self->priv->proxy != NULL); /* that call does not fail unless we pass bogus names */
+
+ self->priv->proxy_call = dbus_g_proxy_begin_call (self->priv->proxy, "ApplyConfiguration",
+ apply_configuration_returned_cb, self,
+ 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 self->priv->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)
+{
+ CcDisplayPanel *self = data;
+ gboolean success;
+ GError *error;
+
+ g_assert (call_id == self->priv->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 (self->priv->proxy);
+ self->priv->proxy = NULL;
+
+ dbus_g_connection_unref (self->priv->connection);
+ self->priv->connection = NULL;
+ self->priv->proxy_call = NULL;
+
+ gtk_widget_set_sensitive (self->priv->panel, TRUE);
+}
+
+static gboolean
+sanitize_and_save_configuration (CcDisplayPanel *self)
+{
+ GError *error;
+
+ gnome_rr_config_sanitize (self->priv->current_configuration);
+ gnome_rr_config_ensure_primary (self->priv->current_configuration);
+
+ check_required_virtual_size (self);
+
+ foo_scroll_area_invalidate (FOO_SCROLL_AREA (self->priv->area));
+
+ ensure_current_configuration_is_saved ();
+
+ error = NULL;
+ if (!gnome_rr_config_save (self->priv->current_configuration, &error))
+ {
+ error_message (self, _("Could not save the monitor configuration"), error->message);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+apply (CcDisplayPanel *self)
+{
+ GError *error = NULL;
+ GdkWindow *window;
+
+ self->priv->apply_button_clicked_timestamp = gtk_get_current_event_time ();
+
+ if (!sanitize_and_save_configuration (self))
+ return;
+
+ g_assert (self->priv->connection == NULL);
+ g_assert (self->priv->proxy == NULL);
+ g_assert (self->priv->proxy_call == NULL);
+
+ self->priv->connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
+ if (self->priv->connection == NULL) {
+ error_message (self, _("Could not get session bus while applying display configuration"), error->message);
+ g_error_free (error);
+ return;
+ }
+
+ gtk_widget_set_sensitive (self->priv->panel, FALSE);
+
+ window = gtk_widget_get_window (gtk_widget_get_toplevel (self->priv->panel));
+
+ begin_version2_apply_configuration (self, window,
+ self->priv->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)
+{
+ CcDisplayPanel *self = data;
+ GError *error;
+
+ error = NULL;
+ if (!gnome_rr_screen_refresh (self->priv->screen, &error)) {
+ if (error) {
+ error_message (self, _("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)
+{
+ CcDisplayPanel *self = data;
+
+ if (self->priv->labeler)
+ gnome_rr_labeler_show (self->priv->labeler);
+ return FALSE;
+}
+
+static gboolean
+dialog_focus_out_cb (GtkWidget *widget, GdkEvent *event, gpointer data)
+{
+ CcDisplayPanel *self = data;
+
+ if (self->priv->labeler)
+ gnome_rr_labeler_hide (self->priv->labeler);
+ return FALSE;
+}
+
+static void
+on_toplevel_realized (GtkWidget *widget,
+ CcDisplayPanel *self)
+{
+ self->priv->current_output = get_output_for_window (self->priv->current_configuration,
+ gtk_widget_get_window (widget));
+ rebuild_gui (self);
+}
+
+/* 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 (CcDisplayPanel *self)
+{
+ GtkWidget *toplevel;
+
+ toplevel = gtk_widget_get_toplevel (self->priv->panel);
+
+ if (gtk_widget_get_realized (toplevel)) {
+ self->priv->current_output = get_output_for_window (self->priv->current_configuration,
+ gtk_widget_get_window (toplevel));
+ rebuild_gui (self);
+ } else {
+ g_signal_connect (toplevel, "realize", G_CALLBACK (on_toplevel_realized), self);
+ self->priv->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)
+{
+ CcDisplayPanel *self = data;
+
+ select_current_output_from_dialog_position (self);
+ return FALSE;
+}
+
+static void
+cc_display_panel_init (CcDisplayPanel *self)
+{
+ GtkBuilder *builder;
+ GtkWidget *align;
+ GError *error;
+ gchar *objects[] = {"display-panel", "rotation-liststore", NULL};
+
+ self->priv = DISPLAY_PANEL_PRIVATE (self);
+
+ error = NULL;
+ self->priv->builder = builder = gtk_builder_new ();
+
+ if (!gtk_builder_add_objects_from_file (builder, UIDIR "/display-capplet.ui", objects, &error))
+ {
+ g_warning ("Could not parse UI definition: %s", error->message);
+ g_error_free (error);
+ g_object_unref (builder);
+ return;
+ }
+
+ self->priv->screen = gnome_rr_screen_new (gdk_screen_get_default (), &error);
+ g_signal_connect (self->priv->screen, "changed", G_CALLBACK (on_screen_changed), self);
+ if (!self->priv->screen)
+ {
+ error_message (NULL, _("Could not get screen information"), error->message);
+ g_error_free (error);
+ g_object_unref (builder);
+ return;
+ }
+
+ self->priv->clock_settings = g_settings_new (CLOCK_SCHEMA);
+
+ self->priv->panel = WID ("display-panel");
+ g_signal_connect_after (self->priv->panel, "focus-in-event",
+ G_CALLBACK (dialog_focus_in_cb), self);
+ g_signal_connect_after (self->priv->panel, "focus-out-event",
+ G_CALLBACK (dialog_focus_out_cb), self);
+
+ if (!self->priv->panel)
+ g_warning ("Missing display-panel object");
+ g_signal_connect_after (self->priv->panel, "show",
+ G_CALLBACK (dialog_map_event_cb), self);
+
+ self->priv->current_monitor_event_box = WID ("current_monitor_event_box");
+ self->priv->current_monitor_label = WID ("current_monitor_label");
+
+ self->priv->monitor_switch = WID ("monitor_switch");
+ g_signal_connect (self->priv->monitor_switch, "notify::active",
+ G_CALLBACK (monitor_switch_active_cb), self);
+
+ self->priv->resolution_combo = WID ("resolution_combo");
+ g_signal_connect (self->priv->resolution_combo, "changed",
+ G_CALLBACK (on_resolution_changed), self);
+
+ self->priv->rotation_combo = WID ("rotation_combo");
+ g_signal_connect (self->priv->rotation_combo, "changed",
+ G_CALLBACK (on_rotation_changed), self);
+
+ self->priv->clone_checkbox = WID ("clone_checkbox");
+ g_signal_connect (self->priv->clone_checkbox, "toggled",
+ G_CALLBACK (on_clone_changed), self);
+
+ self->priv->clone_label = WID ("clone_resolution_warning_label");
+
+ g_signal_connect (WID ("detect_displays_button"),
+ "clicked", G_CALLBACK (on_detect_displays), self);
+
+ make_text_combo (self->priv->resolution_combo, 4);
+ make_text_combo (self->priv->rotation_combo, -1);
+
+ /* Scroll Area */
+ self->priv->area = (GtkWidget *)foo_scroll_area_new ();
+
+ g_object_set_data (G_OBJECT (self->priv->area), "panel", self);
+
+ set_monitors_tooltip (self, FALSE);
+
+ /* FIXME: this should be computed dynamically */
+ foo_scroll_area_set_min_size (FOO_SCROLL_AREA (self->priv->area), 0, 200);
+ gtk_widget_show (self->priv->area);
+ g_signal_connect (self->priv->area, "paint",
+ G_CALLBACK (on_area_paint), self);
+ g_signal_connect (self->priv->area, "viewport_changed",
+ G_CALLBACK (on_viewport_changed), self);
+
+ align = WID ("align");
+
+ gtk_container_add (GTK_CONTAINER (align), self->priv->area);
+
+ on_screen_changed (self->priv->screen, self);
- widget = run_application ();
+ g_signal_connect_swapped (WID ("apply_button"),
+ "clicked", G_CALLBACK (apply), self);
- gtk_widget_show (widget);
- gtk_container_add (GTK_CONTAINER (self), widget);
+ gtk_widget_show (self->priv->panel);
+ gtk_container_add (GTK_CONTAINER (self), self->priv->panel);
}
void
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