/* cc-display-arrangement.c * * Copyright (C) 2007, 2008, 2017 Red Hat, Inc. * Copyright (C) 2013 Intel, Inc. * * Written by: Benjamin Berg * * 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, 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, see . */ #include #include "cc-display-arrangement.h" #include "cc-display-config.h" struct _CcDisplayArrangement { GtkDrawingArea object; CcDisplayConfig *config; cairo_matrix_t to_widget; cairo_matrix_t to_actual; gboolean drag_active; CcDisplayMonitor *selected_output; CcDisplayMonitor *prelit_output; /* Starting position of cursor inside the monitor. */ gdouble drag_anchor_x; gdouble drag_anchor_y; guint major_snap_distance; }; typedef struct _CcDisplayArrangement CcDisplayArrangement; enum { PROP_0, PROP_CONFIG, PROP_SELECTED_OUTPUT, PROP_LAST }; typedef enum { SNAP_DIR_NONE = 0, SNAP_DIR_X = 1 << 0, SNAP_DIR_Y = 1 << 1, SNAP_DIR_BOTH = (SNAP_DIR_X | SNAP_DIR_Y), } SnapDirection; typedef struct { cairo_matrix_t to_widget; guint major_snap_distance; gdouble dist_x; gdouble dist_y; gint mon_x; gint mon_y; SnapDirection snapped; } SnapData; #define MARGIN_PX 0 #define MARGIN_MON 0.66 #define MAJOR_SNAP_DISTANCE 25 #define MINOR_SNAP_DISTANCE 5 #define MIN_OVERLAP 25 G_DEFINE_TYPE (CcDisplayArrangement, cc_display_arrangement, GTK_TYPE_DRAWING_AREA) static GParamSpec *props[PROP_LAST]; static void apply_rotation_to_geometry (CcDisplayMonitor *output, int *w, int *h) { CcDisplayRotation rotation; rotation = cc_display_monitor_get_rotation (output); if ((rotation == CC_DISPLAY_ROTATION_90) || (rotation == CC_DISPLAY_ROTATION_270)) { int tmp; tmp = *h; *h = *w; *w = tmp; } } /* get_geometry */ static void get_scaled_geometry (CcDisplayConfig *config, CcDisplayMonitor *output, int *x, int *y, int *w, int *h) { if (cc_display_monitor_is_active (output)) { cc_display_monitor_get_geometry (output, x, y, w, h); } else { cc_display_monitor_get_geometry (output, x, y, NULL, NULL); cc_display_mode_get_resolution (cc_display_monitor_get_preferred_mode (output), w, h); } if (cc_display_config_is_layout_logical (config)) { double scale = cc_display_monitor_get_scale (output); *w = round (*w / scale); *h = round (*h / scale); } apply_rotation_to_geometry (output, w, h); } static void get_bounding_box (CcDisplayConfig *config, gint *x1, gint *y1, gint *x2, gint *y2, gint *max_w, gint *max_h) { GList *outputs, *l; g_assert (x1 && y1 && x2 && y2); *x1 = *y1 = G_MAXINT; *x2 = *y2 = G_MININT; *max_w = 0; *max_h = 0; outputs = cc_display_config_get_monitors (config); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; int x, y, w, h; if (!cc_display_monitor_is_useful (output)) continue; get_scaled_geometry (config, output, &x, &y, &w, &h); *x1 = MIN (*x1, x); *y1 = MIN (*y1, y); *x2 = MAX (*x2, x + w); *y2 = MAX (*y2, y + h); *max_w = MAX (*max_w, w); *max_h = MAX (*max_h, h); } } static void monitor_get_drawing_rect (CcDisplayArrangement *self, CcDisplayMonitor *output, gint *x1, gint *y1, gint *x2, gint *y2) { gdouble x, y; get_scaled_geometry (self->config, output, x1, y1, x2, y2); /* get_scaled_geometry returns the width and height */ *x2 = *x1 + *x2; *y2 = *y1 + *y2; x = *x1; y = *y1; cairo_matrix_transform_point (&self->to_widget, &x, &y); *x1 = round (x); *y1 = round (y); x = *x2; y = *y2; cairo_matrix_transform_point (&self->to_widget, &x, &y); *x2 = round (x); *y2 = round (y); } static void get_snap_distance (SnapData *snap_data, gint mon_x, gint mon_y, gint new_x, gint new_y, gdouble *dist_x, gdouble *dist_y) { gdouble local_dist_x, local_dist_y; local_dist_x = ABS (mon_x - new_x); local_dist_y = ABS (mon_y - new_y); cairo_matrix_transform_distance (&snap_data->to_widget, &local_dist_x, &local_dist_y); if (dist_x) *dist_x = local_dist_x; if (dist_y) *dist_y = local_dist_y; } static void maybe_update_snap (SnapData *snap_data, gint mon_x, gint mon_y, gint new_x, gint new_y, SnapDirection snapped, SnapDirection major_axis, gint minor_unlimited) { SnapDirection update_snap = SNAP_DIR_NONE; gdouble dist_x, dist_y; gdouble dist; get_snap_distance (snap_data, mon_x, mon_y, new_x, new_y, &dist_x, &dist_y); dist = MAX (dist_x, dist_y); /* Snap by the variable max snap distance on the major axis, ensure the * minor axis is below the minimum snapping distance (often just zero). */ switch (major_axis) { case SNAP_DIR_X: if (dist_x > snap_data->major_snap_distance) return; if (dist_y > MINOR_SNAP_DISTANCE) { if (new_y > mon_y && minor_unlimited <= 0) return; if (new_y < mon_y && minor_unlimited >= 0) return; } break; case SNAP_DIR_Y: if (dist_y > snap_data->major_snap_distance) return; if (dist_x > MINOR_SNAP_DISTANCE) { if (new_x > mon_x && minor_unlimited <= 0) return; if (new_x < mon_x && minor_unlimited >= 0) return; } break; default: g_assert_not_reached(); } if (snapped == SNAP_DIR_BOTH) { if (snap_data->snapped == SNAP_DIR_NONE) update_snap = SNAP_DIR_BOTH; /* Update, if this is closer on the main axis. */ if (((major_axis == SNAP_DIR_X) && (dist_x < snap_data->dist_x)) || ((major_axis == SNAP_DIR_Y) && (dist_y < snap_data->dist_y))) { update_snap = SNAP_DIR_BOTH; } /* Also update if we were only snapping in one direction earlier and it * is better or equally good. */ if ((snap_data->snapped == SNAP_DIR_X && (dist <= snap_data->dist_x)) || (snap_data->snapped == SNAP_DIR_Y && (dist <= snap_data->dist_y))) { update_snap = SNAP_DIR_BOTH; } /* Also allow a minor axis to be added if the first axis remains identical. */ if (((snap_data->snapped == SNAP_DIR_X) && (major_axis == SNAP_DIR_X) && (new_x == snap_data->mon_x)) || ((snap_data->snapped == SNAP_DIR_Y) && (major_axis == SNAP_DIR_Y) && (new_y == snap_data->mon_y))) { update_snap = SNAP_DIR_BOTH; } } else if (snapped == SNAP_DIR_X) { if (dist_x < snap_data->dist_x || (snap_data->snapped & SNAP_DIR_X) == SNAP_DIR_NONE) update_snap = SNAP_DIR_X; } else if (snapped == SNAP_DIR_Y) { if (dist_y < snap_data->dist_y || (snap_data->snapped & SNAP_DIR_Y) == SNAP_DIR_NONE) update_snap = SNAP_DIR_Y; } else { g_assert_not_reached (); } if (update_snap & SNAP_DIR_X) { snap_data->dist_x = dist_x; snap_data->mon_x = new_x; snap_data->snapped = snap_data->snapped | SNAP_DIR_X; } if (update_snap & SNAP_DIR_Y) { snap_data->dist_y = dist_y; snap_data->mon_y = new_y; snap_data->snapped = snap_data->snapped | SNAP_DIR_Y; } } static void find_best_snapping (CcDisplayConfig *config, CcDisplayMonitor *snap_output, SnapData *snap_data) { GList *outputs, *l; gint x1, y1, x2, y2; gint w, h; g_assert (snap_data != NULL); get_scaled_geometry (config, snap_output, &x1, &y1, &w, &h); x2 = x1 + w; y2 = y1 + h; #define OVERLAP(_s1, _s2, _t1, _t2) ((_s1) <= (_t2) && (_t1) <= (_s2)) outputs = cc_display_config_get_monitors (config); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; gint _x1, _y1, _x2, _y2, _h, _w; gint bottom_snap_pos; gint top_snap_pos; gint left_snap_pos; gint right_snap_pos; gdouble dist_x, dist_y; gdouble tmp; if (output == snap_output) continue; if (!cc_display_monitor_is_useful (output)) continue; get_scaled_geometry (config, output, &_x1, &_y1, &_w, &_h); _x2 = _x1 + _w; _y2 = _y1 + _h; top_snap_pos = _y1 - h; bottom_snap_pos = _y2; left_snap_pos = _x1 - w; right_snap_pos = _x2; dist_y = 9999; /* overlap on the X axis */ if (OVERLAP (x1, x2, _x1, _x2)) { get_snap_distance (snap_data, x1, y1, x1, top_snap_pos, NULL, &dist_y); get_snap_distance (snap_data, x1, y1, x1, bottom_snap_pos, NULL, &tmp); dist_y = MIN(dist_y, tmp); } dist_x = 9999; /* overlap on the Y axis */ if (OVERLAP (y1, y2, _y1, _y2)) { get_snap_distance (snap_data, x1, y1, left_snap_pos, y1, &dist_x, NULL); get_snap_distance (snap_data, x1, y1, right_snap_pos, y1, &tmp, NULL); dist_x = MIN(dist_x, tmp); } /* We only snap horizontally or vertically to an edge of the same monitor */ if (dist_y < dist_x) { maybe_update_snap (snap_data, x1, y1, x1, top_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0); maybe_update_snap (snap_data, x1, y1, x1, bottom_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0); } else if (dist_x < 9999) { maybe_update_snap (snap_data, x1, y1, left_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0); maybe_update_snap (snap_data, x1, y1, right_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0); } /* Left/right edge identical on the top */ maybe_update_snap (snap_data, x1, y1, _x1, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0); maybe_update_snap (snap_data, x1, y1, _x2 - w, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0); /* Left/right edge identical on the bottom */ maybe_update_snap (snap_data, x1, y1, _x1, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0); maybe_update_snap (snap_data, x1, y1, _x2 - w, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0); /* Top/bottom edge identical on the left */ maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0); maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0); /* Top/bottom edge identical on the right */ maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0); maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0); /* If snapping is infinite, then add snapping points with minimal overlap * to prevent detachment. * This is similar to the above but simply re-defines the snapping pos * to have only minimal overlap */ if (snap_data->major_snap_distance == G_MAXUINT) { /* Hanging over the left/right edge on the top */ maybe_update_snap (snap_data, x1, y1, _x1 - w + MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1); maybe_update_snap (snap_data, x1, y1, _x2 - MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1); /* Left/right edge identical on the bottom */ maybe_update_snap (snap_data, x1, y1, _x1 - w + MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1); maybe_update_snap (snap_data, x1, y1, _x2 - MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1); /* Top/bottom edge identical on the left */ maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1); maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1); /* Top/bottom edge identical on the right */ maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1); maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1); } } #undef OVERLAP } static void cc_display_arrangement_update_matrices (CcDisplayArrangement *self) { GtkAllocation allocation; gdouble scale, scale_h, scale_w; gint x1, y1, x2, y2, max_w, max_h; g_assert (self->config); /* Do not update the matrices while the user is dragging things around. */ if (self->drag_active) return; get_bounding_box (self->config, &x1, &y1, &x2, &y2, &max_w, &max_h); gtk_widget_get_allocation (GTK_WIDGET (self), &allocation); scale_h = (gdouble) (allocation.width - 2 * MARGIN_PX) / (x2 - x1 + max_w * 2 * MARGIN_MON); scale_w = (gdouble) (allocation.height - 2 * MARGIN_PX) / (y2 - y1 + max_h * 2 * MARGIN_MON); scale = MIN (scale_h, scale_w); cairo_matrix_init_identity (&self->to_widget); cairo_matrix_translate (&self->to_widget, allocation.width / 2.0, allocation.height / 2.0); cairo_matrix_scale (&self->to_widget, scale, scale); cairo_matrix_translate (&self->to_widget, - (x1 + x2) / 2.0, - (y1 + y2) / 2.0); self->to_actual = self->to_widget; cairo_matrix_invert (&self->to_actual); } static CcDisplayMonitor* cc_display_arrangement_find_monitor_at (CcDisplayArrangement *self, gint x, gint y) { g_autoptr(GList) outputs = NULL; GList *l; outputs = g_list_copy (cc_display_config_get_monitors (self->config)); if (self->selected_output) outputs = g_list_prepend (outputs, self->selected_output); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; gint x1, y1, x2, y2; if (!cc_display_monitor_is_useful (output)) continue; monitor_get_drawing_rect (self, output, &x1, &y1, &x2, &y2); if (x >= x1 && x <= x2 && y >= y1 && y <= y2) return output; } return NULL; } static void on_output_changed_cb (CcDisplayArrangement *self, CcDisplayMonitor *output) { if (cc_display_config_count_useful_monitors (self->config) > 2) self->major_snap_distance = MAJOR_SNAP_DISTANCE; else self->major_snap_distance = G_MAXUINT; gtk_widget_queue_draw (GTK_WIDGET (self)); } static void cc_display_arrangement_draw (GtkDrawingArea *drawing_area, cairo_t *cr, gint width, gint height, gpointer user_data) { CcDisplayArrangement *self = CC_DISPLAY_ARRANGEMENT (drawing_area); GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (self)); g_autoptr(GList) outputs = NULL; GList *l; if (!self->config) return; cc_display_arrangement_update_matrices (self); /* Draw in reverse order so that hit detection matches visual. Also pull * the selected output to the back. */ outputs = g_list_copy (cc_display_config_get_monitors (self->config)); outputs = g_list_remove (outputs, self->selected_output); if (self->selected_output != NULL) outputs = g_list_prepend (outputs, self->selected_output); outputs = g_list_reverse (outputs); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; GtkStateFlags state = GTK_STATE_FLAG_NORMAL; GtkBorder border, padding, margin; gint x1, y1, x2, y2; gint w, h; gint num; if (!cc_display_monitor_is_useful (output)) continue; gtk_style_context_save (context); cairo_save (cr); gtk_style_context_add_class (context, "monitor"); if (output == self->selected_output) state |= GTK_STATE_FLAG_SELECTED; if (output == self->prelit_output) state |= GTK_STATE_FLAG_PRELIGHT; gtk_style_context_set_state (context, state); if (cc_display_monitor_is_primary (output) || cc_display_config_is_cloning (self->config)) gtk_style_context_add_class (context, "primary"); /* Set in cc-display-panel.c */ num = cc_display_monitor_get_ui_number (output); monitor_get_drawing_rect (self, output, &x1, &y1, &x2, &y2); w = x2 - x1; h = y2 - y1; cairo_translate (cr, x1, y1); gtk_style_context_get_margin (context, &margin); cairo_translate (cr, margin.left, margin.top); w -= margin.left + margin.right; h -= margin.top + margin.bottom; gtk_render_background (context, cr, 0, 0, w, h); gtk_render_frame (context, cr, 0, 0, w, h); gtk_style_context_get_border (context, &border); gtk_style_context_get_padding (context, &padding); w -= border.left + border.right + padding.left + padding.right; h -= border.top + border.bottom + padding.top + padding.bottom; cairo_translate (cr, border.left + padding.left, border.top + padding.top); if (num > 0) { PangoLayout *layout; g_autofree gchar *number_str = NULL; PangoRectangle extents; GdkRGBA color; gdouble text_width, text_padding; gtk_style_context_add_class (context, "monitor-label"); gtk_style_context_remove_class (context, "monitor"); gtk_style_context_get_border (context, &border); gtk_style_context_get_padding (context, &padding); cairo_translate (cr, w / 2, h / 2); number_str = g_strdup_printf ("%d", num); layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), number_str); pango_layout_get_extents (layout, NULL, &extents); h = (extents.height - extents.y) / PANGO_SCALE; text_width = (extents.width - extents.x) / PANGO_SCALE; w = MAX (text_width, h - padding.left - padding.right); text_padding = w - text_width; w += border.left + border.right + padding.left + padding.right; h += border.top + border.bottom + padding.top + padding.bottom; /* Enforce evenness */ if ((w % 2) != 0) w++; if ((h % 2) != 0) h++; cairo_translate (cr, - w / 2, - h / 2); gtk_render_background (context, cr, 0, 0, w, h); gtk_render_frame (context, cr, 0, 0, w, h); cairo_translate (cr, border.left + padding.left, border.top + padding.top); cairo_translate (cr, extents.x + text_padding / 2, 0); gtk_style_context_get_color (context, &color); gdk_cairo_set_source_rgba (cr, &color); gtk_render_layout (context, cr, 0, 0, layout); g_object_unref (layout); } gtk_style_context_restore (context); cairo_restore (cr); } } static gboolean on_click_gesture_pressed_cb (GtkGestureClick *click_gesture, gint n_press, gdouble x, gdouble y, CcDisplayArrangement *self) { CcDisplayMonitor *output; gdouble event_x, event_y; gint mon_x, mon_y; if (!self->config) return FALSE; g_return_val_if_fail (self->drag_active == FALSE, FALSE); output = cc_display_arrangement_find_monitor_at (self, x, y); if (!output) return FALSE; event_x = x; event_y = y; cairo_matrix_transform_point (&self->to_actual, &event_x, &event_y); cc_display_monitor_get_geometry (output, &mon_x, &mon_y, NULL, NULL); cc_display_arrangement_set_selected_output (self, output); if (cc_display_config_count_useful_monitors (self->config) > 1) { self->drag_active = TRUE; self->drag_anchor_x = event_x - mon_x; self->drag_anchor_y = event_y - mon_y; } return TRUE; } static gboolean on_click_gesture_released_cb (GtkGestureClick *click_gesture, gint n_press, gdouble x, gdouble y, CcDisplayArrangement *self) { CcDisplayMonitor *output; if (!self->config) return FALSE; if (!self->drag_active) return FALSE; self->drag_active = FALSE; output = cc_display_arrangement_find_monitor_at (self, x, y); gtk_widget_set_cursor_from_name (GTK_WIDGET (self), output != NULL ? "fleur" : NULL); /* And queue a redraw to recenter everything */ gtk_widget_queue_draw (GTK_WIDGET (self)); g_signal_emit_by_name (G_OBJECT (self), "updated"); return TRUE; } static gboolean on_motion_controller_motion_cb (GtkEventControllerMotion *motion_controller, gdouble x, gdouble y, CcDisplayArrangement *self) { gdouble event_x, event_y; gint mon_x, mon_y; SnapData snap_data; if (!self->config) return FALSE; if (cc_display_config_count_useful_monitors (self->config) <= 1) return FALSE; if (!self->drag_active) { CcDisplayMonitor *output; output = cc_display_arrangement_find_monitor_at (self, x, y); gtk_widget_set_cursor_from_name (GTK_WIDGET (self), output != NULL ? "fleur" : NULL); if (self->prelit_output != output) gtk_widget_queue_draw (GTK_WIDGET (self)); self->prelit_output = output; return FALSE; } g_assert (self->selected_output); event_x = x; event_y = y; cairo_matrix_transform_point (&self->to_actual, &event_x, &event_y); mon_x = round (event_x - self->drag_anchor_x); mon_y = round (event_y - self->drag_anchor_y); /* The monitor is now at the location as if there was no snapping whatsoever. */ snap_data.snapped = SNAP_DIR_NONE; snap_data.mon_x = mon_x; snap_data.mon_y = mon_y; snap_data.dist_x = 0; snap_data.dist_y = 0; snap_data.to_widget = self->to_widget; snap_data.major_snap_distance = self->major_snap_distance; cc_display_monitor_set_position (self->selected_output, mon_x, mon_y); find_best_snapping (self->config, self->selected_output, &snap_data); cc_display_monitor_set_position (self->selected_output, snap_data.mon_x, snap_data.mon_y); return TRUE; } static void cc_display_arrangement_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { CcDisplayArrangement *self = CC_DISPLAY_ARRANGEMENT (object); switch (prop_id) { case PROP_CONFIG: g_value_set_object (value, self->config); break; case PROP_SELECTED_OUTPUT: g_value_set_object (value, self->selected_output); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void cc_display_arrangement_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { CcDisplayArrangement *obj = CC_DISPLAY_ARRANGEMENT (object); switch (prop_id) { case PROP_CONFIG: cc_display_arrangement_set_config (obj, g_value_get_object (value)); break; case PROP_SELECTED_OUTPUT: cc_display_arrangement_set_selected_output (obj, g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void cc_display_arrangement_finalize (GObject *object) { CcDisplayArrangement *self = CC_DISPLAY_ARRANGEMENT (object); g_clear_object (&self->config); G_OBJECT_CLASS (cc_display_arrangement_parent_class)->finalize (object); } static void cc_display_arrangement_class_init (CcDisplayArrangementClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); gobject_class->finalize = cc_display_arrangement_finalize; gobject_class->get_property = cc_display_arrangement_get_property; gobject_class->set_property = cc_display_arrangement_set_property; props[PROP_CONFIG] = g_param_spec_object ("config", "Display Config", "The display configuration to work with", CC_TYPE_DISPLAY_CONFIG, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); props[PROP_SELECTED_OUTPUT] = g_param_spec_object ("selected-output", "Selected Output", "The output that is currently selected on the configuration", CC_TYPE_DISPLAY_MONITOR, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (gobject_class, PROP_LAST, props); g_signal_new ("updated", CC_TYPE_DISPLAY_ARRANGEMENT, G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0); gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (klass), "display-arrangement"); } static void cc_display_arrangement_init (CcDisplayArrangement *self) { GtkEventController *motion_controller; GtkGesture *click_gesture; click_gesture = gtk_gesture_click_new (); g_signal_connect (click_gesture, "pressed", G_CALLBACK (on_click_gesture_pressed_cb), self); g_signal_connect (click_gesture, "released", G_CALLBACK (on_click_gesture_released_cb), self); gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (click_gesture)); motion_controller = gtk_event_controller_motion_new (); g_signal_connect (motion_controller, "motion", G_CALLBACK (on_motion_controller_motion_cb), self); gtk_widget_add_controller (GTK_WIDGET (self), motion_controller); gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (self), cc_display_arrangement_draw, self, NULL); self->major_snap_distance = MAJOR_SNAP_DISTANCE; } CcDisplayArrangement* cc_display_arrangement_new (CcDisplayConfig *config) { return g_object_new (CC_TYPE_DISPLAY_ARRANGEMENT, "config", config, NULL); } CcDisplayConfig* cc_display_arrangement_get_config (CcDisplayArrangement *self) { return self->config; } void cc_display_arrangement_set_config (CcDisplayArrangement *self, CcDisplayConfig *config) { const gchar *signals[] = { "rotation", "mode", "primary", "active", "scale", "position-changed", "is-usable" }; GList *outputs, *l; guint i; if (self->config) { outputs = cc_display_config_get_monitors (self->config); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; g_signal_handlers_disconnect_by_data (output, self); } } g_clear_object (&self->config); self->drag_active = FALSE; /* Listen to all the signals */ if (config) { self->config = g_object_ref (config); outputs = cc_display_config_get_monitors (self->config); for (l = outputs; l; l = l->next) { CcDisplayMonitor *output = l->data; for (i = 0; i < G_N_ELEMENTS (signals); ++i) g_signal_connect_object (output, signals[i], G_CALLBACK (on_output_changed_cb), self, G_CONNECT_SWAPPED); } } cc_display_arrangement_set_selected_output (self, NULL); g_object_notify_by_pspec (G_OBJECT (self), props[PROP_CONFIG]); } CcDisplayMonitor* cc_display_arrangement_get_selected_output (CcDisplayArrangement *self) { return self->selected_output; } void cc_display_arrangement_set_selected_output (CcDisplayArrangement *self, CcDisplayMonitor *output) { g_return_if_fail (self->drag_active == FALSE); /* XXX: Could check that it actually belongs to the right config object. */ self->selected_output = output; gtk_widget_queue_draw (GTK_WIDGET (self)); g_object_notify_by_pspec (G_OBJECT (self), props[PROP_SELECTED_OUTPUT]); } void cc_display_config_snap_output (CcDisplayConfig *config, CcDisplayMonitor *output) { SnapData snap_data; gint x, y, w, h; if (!cc_display_monitor_is_useful (output)) return; if (cc_display_config_count_useful_monitors (config) <= 1) return; get_scaled_geometry (config, output, &x, &y, &w, &h); snap_data.snapped = SNAP_DIR_NONE; snap_data.mon_x = x; snap_data.mon_y = y; snap_data.dist_x = 0; snap_data.dist_y = 0; cairo_matrix_init_identity (&snap_data.to_widget); snap_data.major_snap_distance = G_MAXUINT; find_best_snapping (config, output, &snap_data); cc_display_monitor_set_position (output, snap_data.mon_x, snap_data.mon_y); }