/* GTK - The GIMP Toolkit * Copyright (C) 2019 Red Hat, Inc. * * Authors: * - Matthias Clasen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . */ /** * SECTION:gtkpopover * @Short_description: Context dependent bubbles * @Title: GtkPopover * * GtkPopover is a bubble-like context window, primarily meant to * provide context-dependent information or options. Popovers are * attached to a widget, passed at construction time on gtk_popover_new(), * or updated afterwards through gtk_popover_set_relative_to(), by * default they will point to the whole widget area, although this * behavior can be changed through gtk_popover_set_pointing_to(). * * The position of a popover relative to the widget it is attached to * can also be changed through gtk_popover_set_position(). * * By default, #GtkPopover performs a grab, in order to ensure input events * get redirected to it while it is shown, and also so the popover is dismissed * in the expected situations (clicks outside the popover, or the Escape key * being pressed). If no such modal behavior is desired on a popover, * gtk_popover_set_autohide() may be called on it to tweak its behavior. * * ## GtkPopover as menu replacement * * GtkPopover is often used to replace menus. The best was to do this * is to use the #GtkPopoverMenu subclass which supports being populated * from a #GMenuModel with gtk_popover_menu_new_from_model(). * * |[ *
* horizontal-buttons * * Cut * app.cut * edit-cut-symbolic * * * Copy * app.copy * edit-copy-symbolic * * * Paste * app.paste * edit-paste-symbolic * *
* ]| * * # CSS nodes * * |[ * popover[.menu] * ├── arrow * ╰── contents.background * ╰── * ]| * * The contents child node always gets the .background style class and * the popover itself gets the .menu style class if the popover is * menu-like (i.e. #GtkPopoverMenu). * * Particular uses of GtkPopover, such as touch selection popups or magnifiers * in #GtkEntry or #GtkTextView get style classes like .touch-selection or .magnifier * to differentiate from plain popovers. * * When styling a popover directly, the popover node should usually * not have any background. * * Note that, in order to accomplish appropriate arrow visuals, #GtkPopover uses * custom drawing for the arrow node. This makes it possible for the arrow to * change its shape dynamically, but it also limits the possibilities of styling * it using CSS. In particular, the arrow gets drawn over the content node's * border so they look like one shape, which means that the border-width of * the content node and the arrow node should be the same. The arrow also does * not support any border shape other than solid, no border-radius, only one * border width (border-bottom-width is used) and no box-shadow. */ #include "config.h" #include "gtkpopoverprivate.h" #include "gtkpopovermenuprivate.h" #include "gtknative.h" #include "gtkwidgetprivate.h" #include "gtkeventcontrollerkey.h" #include "gtkcssnodeprivate.h" #include "gtkbindings.h" #include "gtkbinlayout.h" #include "gtkenums.h" #include "gtktypebuiltins.h" #include "gtkmnemonichash.h" #include "gtkgizmoprivate.h" #include "gtkintl.h" #include "gtkprivate.h" #include "gtkmain.h" #include "gtkstack.h" #include "gtkmenusectionboxprivate.h" #include "gdk/gdkeventsprivate.h" #include "gtkpointerfocusprivate.h" #include "gtkcssnodeprivate.h" #include "gtksnapshot.h" #include "gtkrender.h" #include "gtkstylecontextprivate.h" #include "gtkroundedboxprivate.h" #include "gsk/gskroundedrectprivate.h" #ifdef GDK_WINDOWING_WAYLAND #include "wayland/gdkwayland.h" #endif #define TAIL_GAP_WIDTH 24 #define TAIL_HEIGHT 12 #define POS_IS_VERTICAL(p) ((p) == GTK_POS_TOP || (p) == GTK_POS_BOTTOM) typedef struct { GdkSurface *surface; GskRenderer *renderer; GtkWidget *default_widget; GdkSurfaceState state; GtkWidget *relative_to; GdkRectangle pointing_to; gboolean has_pointing_to; guint surface_transform_changed_cb; GtkPositionType position; gboolean autohide; gboolean has_arrow; GtkWidget *contents_widget; GtkCssNode *arrow_node; GskRenderNode *arrow_render_node; GdkRectangle final_rect; GtkPositionType final_position; } GtkPopoverPrivate; enum { CLOSED, ACTIVATE_DEFAULT, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; enum { PROP_RELATIVE_TO = 1, PROP_POINTING_TO, PROP_POSITION, PROP_AUTOHIDE, PROP_DEFAULT_WIDGET, PROP_HAS_ARROW, NUM_PROPERTIES }; static GParamSpec *properties[NUM_PROPERTIES] = { NULL }; static void gtk_popover_native_interface_init (GtkNativeInterface *iface); G_DEFINE_TYPE_WITH_CODE (GtkPopover, gtk_popover, GTK_TYPE_BIN, G_ADD_PRIVATE (GtkPopover) G_IMPLEMENT_INTERFACE (GTK_TYPE_NATIVE, gtk_popover_native_interface_init)) static GdkSurface * gtk_popover_native_get_surface (GtkNative *native) { GtkPopover *popover = GTK_POPOVER (native); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); return priv->surface; } static GskRenderer * gtk_popover_native_get_renderer (GtkNative *native) { GtkPopover *popover = GTK_POPOVER (native); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); return priv->renderer; } static void gtk_popover_native_get_surface_transform (GtkNative *native, int *x, int *y) { GtkStyleContext *context; GtkBorder margin, border, padding; context = gtk_widget_get_style_context (GTK_WIDGET (native)); gtk_style_context_get_margin (context, &margin); gtk_style_context_get_border (context, &border); gtk_style_context_get_padding (context, &padding); *x = margin.left + border.left + padding.left; *y = margin.top + border.top + padding.top; } static void move_to_rect (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GdkRectangle rect; GdkGravity parent_anchor; GdkGravity surface_anchor; GdkAnchorHints anchor_hints; gtk_widget_get_surface_allocation (priv->relative_to, &rect); if (priv->has_pointing_to) { rect.x += priv->pointing_to.x; rect.y += priv->pointing_to.y; rect.width = priv->pointing_to.width; rect.height = priv->pointing_to.height; } switch (priv->position) { case GTK_POS_LEFT: switch (gtk_widget_get_valign (GTK_WIDGET (popover))) { case GTK_ALIGN_START: parent_anchor = GDK_GRAVITY_NORTH_WEST; surface_anchor = GDK_GRAVITY_NORTH_EAST; break; case GTK_ALIGN_END: parent_anchor = GDK_GRAVITY_SOUTH_WEST; surface_anchor = GDK_GRAVITY_SOUTH_EAST; break; case GTK_ALIGN_FILL: case GTK_ALIGN_CENTER: case GTK_ALIGN_BASELINE: default: parent_anchor = GDK_GRAVITY_WEST; surface_anchor = GDK_GRAVITY_EAST; break; } anchor_hints = GDK_ANCHOR_FLIP_X | GDK_ANCHOR_SLIDE_Y; break; case GTK_POS_RIGHT: switch (gtk_widget_get_valign (GTK_WIDGET (popover))) { case GTK_ALIGN_START: parent_anchor = GDK_GRAVITY_NORTH_EAST; surface_anchor = GDK_GRAVITY_NORTH_WEST; break; case GTK_ALIGN_END: parent_anchor = GDK_GRAVITY_SOUTH_EAST; surface_anchor = GDK_GRAVITY_SOUTH_WEST; break; case GTK_ALIGN_FILL: case GTK_ALIGN_CENTER: case GTK_ALIGN_BASELINE: default: parent_anchor = GDK_GRAVITY_EAST; surface_anchor = GDK_GRAVITY_WEST; break; } anchor_hints = GDK_ANCHOR_FLIP_X | GDK_ANCHOR_SLIDE_Y; break; case GTK_POS_TOP: switch (gtk_widget_get_halign (GTK_WIDGET (popover))) { case GTK_ALIGN_START: parent_anchor = GDK_GRAVITY_NORTH_WEST; surface_anchor = GDK_GRAVITY_SOUTH_WEST; break; case GTK_ALIGN_END: parent_anchor = GDK_GRAVITY_NORTH_EAST; surface_anchor = GDK_GRAVITY_SOUTH_EAST; break; case GTK_ALIGN_FILL: case GTK_ALIGN_CENTER: case GTK_ALIGN_BASELINE: default: parent_anchor = GDK_GRAVITY_NORTH; surface_anchor = GDK_GRAVITY_SOUTH; break; } anchor_hints = GDK_ANCHOR_FLIP_Y | GDK_ANCHOR_SLIDE_X; break; case GTK_POS_BOTTOM: switch (gtk_widget_get_halign (GTK_WIDGET (popover))) { case GTK_ALIGN_START: parent_anchor = GDK_GRAVITY_SOUTH_WEST; surface_anchor = GDK_GRAVITY_NORTH_WEST; break; case GTK_ALIGN_END: parent_anchor = GDK_GRAVITY_SOUTH_EAST; surface_anchor = GDK_GRAVITY_NORTH_EAST; break; case GTK_ALIGN_FILL: case GTK_ALIGN_CENTER: case GTK_ALIGN_BASELINE: default: parent_anchor = GDK_GRAVITY_SOUTH; surface_anchor = GDK_GRAVITY_NORTH; break; } anchor_hints = GDK_ANCHOR_FLIP_Y | GDK_ANCHOR_SLIDE_X; break; default: g_assert_not_reached (); } gdk_surface_move_to_rect (priv->surface, &rect, parent_anchor, surface_anchor, anchor_hints, 0, 0); } static void gtk_popover_move_resize (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkRequisition req; if (priv->surface) { gtk_widget_get_preferred_size (GTK_WIDGET (popover), NULL, &req); gdk_surface_resize (priv->surface, req.width, req.height); move_to_rect (popover); } } static void gtk_popover_native_check_resize (GtkNative *native) { GtkPopover *popover = GTK_POPOVER (native); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *widget = GTK_WIDGET (popover); if (!_gtk_widget_get_alloc_needed (widget)) gtk_widget_ensure_allocate (widget); else if (gtk_widget_get_visible (widget)) { gtk_popover_move_resize (popover); if (priv->surface) gtk_widget_allocate (GTK_WIDGET (popover), gdk_surface_get_width (priv->surface), gdk_surface_get_height (priv->surface), -1, NULL); } } static void gtk_popover_focus_in (GtkWidget *widget) { } static void gtk_popover_focus_out (GtkWidget *widget) { } static void close_menu (GtkPopover *popover) { while (popover) { gtk_popover_popdown (popover); if (GTK_IS_POPOVER_MENU (popover)) popover = (GtkPopover *)gtk_popover_menu_get_parent_menu (GTK_POPOVER_MENU (popover)); else popover = NULL; } } static gboolean gtk_popover_key_pressed (GtkWidget *widget, guint keyval, guint keycode, GdkModifierType state) { if (keyval == GDK_KEY_Escape) { close_menu (GTK_POPOVER (widget)); return TRUE; } return FALSE; } static void surface_state_changed (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GdkSurfaceState new_surface_state; GdkSurfaceState changed_mask; new_surface_state = gdk_surface_get_state (priv->surface); changed_mask = new_surface_state ^ priv->state; priv->state = new_surface_state; if (changed_mask & GDK_SURFACE_STATE_WITHDRAWN) { if (priv->state & GDK_SURFACE_STATE_WITHDRAWN) gtk_widget_hide (widget); } } static void surface_size_changed (GtkWidget *widget, guint width, guint height) { } static gboolean surface_render (GdkSurface *surface, cairo_region_t *region, GtkWidget *widget) { gtk_widget_render (widget, surface, region); return TRUE; } static gboolean surface_event (GdkSurface *surface, GdkEvent *event, GtkWidget *widget) { gtk_main_do_event (event); return TRUE; } static void surface_moved_to_rect (GdkSurface *surface, GdkRectangle *flipped_rect, GdkRectangle *final_rect, gboolean flipped_x, gboolean flipped_y, GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); priv->final_rect = *final_rect; switch (priv->position) { case GTK_POS_LEFT: priv->final_position = flipped_x ? GTK_POS_RIGHT : GTK_POS_LEFT; break; case GTK_POS_RIGHT: priv->final_position = flipped_x ? GTK_POS_LEFT : GTK_POS_RIGHT; break; case GTK_POS_TOP: priv->final_position = flipped_y ? GTK_POS_BOTTOM : GTK_POS_TOP; break; case GTK_POS_BOTTOM: priv->final_position = flipped_y ? GTK_POS_TOP : GTK_POS_BOTTOM; break; default: g_assert_not_reached (); break; } } static void gtk_popover_activate_default (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *focus_widget; focus_widget = gtk_window_get_focus (GTK_WINDOW (gtk_widget_get_root (priv->relative_to))); if (!gtk_widget_is_ancestor (focus_widget, GTK_WIDGET (popover))) focus_widget = NULL; if (priv->default_widget && gtk_widget_is_sensitive (priv->default_widget) && (!focus_widget || !gtk_widget_get_receives_default (focus_widget) )) gtk_widget_activate (priv->default_widget); else if (focus_widget && gtk_widget_is_sensitive (focus_widget)) gtk_widget_activate (focus_widget); } static void activate_default_cb (GSimpleAction *action, GVariant *parameter, gpointer data) { gtk_popover_activate_default (GTK_POPOVER (data)); } static void add_actions (GtkPopover *popover) { GActionEntry entries[] = { { "activate", activate_default_cb, NULL, NULL, NULL }, }; GActionGroup *actions; actions = G_ACTION_GROUP (g_simple_action_group_new ()); g_action_map_add_action_entries (G_ACTION_MAP (actions), entries, G_N_ELEMENTS (entries), popover); gtk_widget_insert_action_group (GTK_WIDGET (popover), "default", actions); g_object_unref (actions); } static void node_style_changed_cb (GtkCssNode *node, GtkCssStyleChange *change, GtkWidget *widget) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (GTK_POPOVER (widget)); g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref); if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SIZE)) gtk_widget_queue_resize (widget); else gtk_widget_queue_draw (widget); } static void gtk_popover_init (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *widget = GTK_WIDGET (popover); GtkEventController *controller; GtkStyleContext *context; priv->position = GTK_POS_BOTTOM; priv->final_position = GTK_POS_BOTTOM; priv->autohide = TRUE; priv->has_arrow = TRUE; controller = gtk_event_controller_key_new (); g_signal_connect_swapped (controller, "focus-in", G_CALLBACK (gtk_popover_focus_in), popover); g_signal_connect_swapped (controller, "focus-out", G_CALLBACK (gtk_popover_focus_out), popover); g_signal_connect_swapped (controller, "key-pressed", G_CALLBACK (gtk_popover_key_pressed), popover); gtk_widget_add_controller (GTK_WIDGET (popover), controller); priv->arrow_node = gtk_css_node_new (); gtk_css_node_set_name (priv->arrow_node, I_("arrow")); gtk_css_node_set_parent (priv->arrow_node, gtk_widget_get_css_node (widget)); gtk_css_node_set_state (priv->arrow_node, gtk_css_node_get_state (gtk_widget_get_css_node (widget))); g_signal_connect_object (priv->arrow_node, "style-changed", G_CALLBACK (node_style_changed_cb), popover, 0); g_object_unref (priv->arrow_node); priv->contents_widget = gtk_gizmo_new ("contents", NULL, NULL, NULL, NULL); gtk_widget_set_layout_manager (priv->contents_widget, gtk_bin_layout_new ()); gtk_widget_set_parent (priv->contents_widget, GTK_WIDGET (popover)); context = gtk_widget_get_style_context (GTK_WIDGET (popover)); gtk_style_context_add_class (context, GTK_STYLE_CLASS_BACKGROUND); add_actions (popover); } static void gtk_popover_realize (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GdkDisplay *display; GdkSurface *parent; display = gtk_widget_get_display (priv->relative_to); parent = gtk_native_get_surface (gtk_widget_get_native (priv->relative_to)); priv->surface = gdk_surface_new_popup (display, parent, priv->autohide); gdk_surface_set_widget (priv->surface, widget); g_signal_connect_swapped (priv->surface, "notify::state", G_CALLBACK (surface_state_changed), widget); g_signal_connect_swapped (priv->surface, "size-changed", G_CALLBACK (surface_size_changed), widget); g_signal_connect (priv->surface, "render", G_CALLBACK (surface_render), widget); g_signal_connect (priv->surface, "event", G_CALLBACK (surface_event), widget); g_signal_connect (priv->surface, "moved-to-rect", G_CALLBACK (surface_moved_to_rect), widget); GTK_WIDGET_CLASS (gtk_popover_parent_class)->realize (widget); priv->renderer = gsk_renderer_new_for_surface (priv->surface); } static void gtk_popover_unrealize (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GTK_WIDGET_CLASS (gtk_popover_parent_class)->unrealize (widget); gsk_renderer_unrealize (priv->renderer); g_clear_object (&priv->renderer); g_signal_handlers_disconnect_by_func (priv->surface, surface_state_changed, widget); g_signal_handlers_disconnect_by_func (priv->surface, surface_size_changed, widget); g_signal_handlers_disconnect_by_func (priv->surface, surface_render, widget); g_signal_handlers_disconnect_by_func (priv->surface, surface_event, widget); g_signal_handlers_disconnect_by_func (priv->surface, surface_moved_to_rect, widget); gdk_surface_set_widget (priv->surface, NULL); gdk_surface_destroy (priv->surface); g_clear_object (&priv->surface); } static void gtk_popover_show (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); _gtk_widget_set_visible_flag (widget, TRUE); gtk_css_node_validate (gtk_widget_get_css_node (widget)); gtk_widget_realize (widget); gtk_popover_native_check_resize (GTK_NATIVE (widget)); gtk_widget_map (widget); if (priv->autohide) { if (!gtk_widget_get_focus_child (widget)) gtk_widget_child_focus (widget, GTK_DIR_TAB_FORWARD); } } static void gtk_popover_hide (GtkWidget *widget) { _gtk_widget_set_visible_flag (widget, FALSE); gtk_widget_unmap (widget); g_signal_emit (widget, signals[CLOSED], 0); } static void unset_surface_transform_changed_cb (gpointer data) { GtkPopover *popover = data; GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); priv->surface_transform_changed_cb = 0; } static gboolean surface_transform_changed_cb (GtkWidget *widget, const graphene_matrix_t *transform, gpointer user_data) { GtkPopover *popover = user_data; GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); move_to_rect (popover); g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref); return G_SOURCE_CONTINUE; } static void gtk_popover_map (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *child; gdk_surface_show (priv->surface); move_to_rect (popover); priv->surface_transform_changed_cb = gtk_widget_add_surface_transform_changed_callback (priv->relative_to, surface_transform_changed_cb, popover, unset_surface_transform_changed_cb); GTK_WIDGET_CLASS (gtk_popover_parent_class)->map (widget); child = gtk_bin_get_child (GTK_BIN (widget)); if (child != NULL && gtk_widget_get_visible (child)) gtk_widget_map (child); } static void gtk_popover_unmap (GtkWidget *widget) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *child; gtk_widget_remove_surface_transform_changed_callback (priv->relative_to, priv->surface_transform_changed_cb); priv->surface_transform_changed_cb = 0; GTK_WIDGET_CLASS (gtk_popover_parent_class)->unmap (widget); gdk_surface_hide (priv->surface); child = gtk_bin_get_child (GTK_BIN (widget)); if (child != NULL) gtk_widget_unmap (child); } static void gtk_popover_dispose (GObject *object) { GtkPopover *popover = GTK_POPOVER (object); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *child; child = gtk_bin_get_child (GTK_BIN (popover)); if (child) { gtk_widget_unparent (child); _gtk_bin_set_child (GTK_BIN (popover), NULL); } g_clear_pointer (&priv->contents_widget, gtk_widget_unparent); g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref); G_OBJECT_CLASS (gtk_popover_parent_class)->dispose (object); } static void gtk_popover_finalize (GObject *object) { G_OBJECT_CLASS (gtk_popover_parent_class)->finalize (object); } static void gtk_popover_get_gap_coords (GtkPopover *popover, gint *initial_x_out, gint *initial_y_out, gint *tip_x_out, gint *tip_y_out, gint *final_x_out, gint *final_y_out) { GtkWidget *widget = GTK_WIDGET (popover); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GdkRectangle rect = { 0 }; gint base, tip, tip_pos; gint initial_x, initial_y; gint tip_x, tip_y; gint final_x, final_y; GtkPositionType pos; gint border_radius; GtkStyleContext *context; GtkBorder border; int popover_width, popover_height; popover_width = gtk_widget_get_allocated_width (widget); popover_height = gtk_widget_get_allocated_height (widget); gtk_widget_get_surface_allocation (priv->relative_to, &rect); if (priv->has_pointing_to) { rect.x += priv->pointing_to.x; rect.y += priv->pointing_to.y; rect.width = priv->pointing_to.width; rect.height = priv->pointing_to.height; } rect.x -= priv->final_rect.x; rect.y -= priv->final_rect.y; context = gtk_widget_get_style_context (priv->contents_widget); pos = priv->final_position; gtk_style_context_get_border (context, &border); gtk_style_context_get (context, GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius, NULL); if (pos == GTK_POS_BOTTOM || pos == GTK_POS_RIGHT) { tip = 0; base = TAIL_HEIGHT + border.top; } else if (pos == GTK_POS_TOP) { base = popover_height - border.bottom - TAIL_HEIGHT; tip = popover_height; } else if (pos == GTK_POS_LEFT) { base = popover_width - border.right - TAIL_HEIGHT; tip = popover_width; } else g_assert_not_reached (); if (POS_IS_VERTICAL (pos)) { tip_pos = rect.x + (rect.width / 2); initial_x = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2, border_radius, popover_width - TAIL_GAP_WIDTH - border_radius); initial_y = base; tip_x = CLAMP (tip_pos, 0, popover_width); tip_y = tip; final_x = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2, border_radius + TAIL_GAP_WIDTH, popover_width - border_radius); final_y = base; } else { tip_pos = rect.y + (rect.height / 2); initial_x = base; initial_y = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2, border_radius, popover_height - TAIL_GAP_WIDTH - border_radius); tip_x = tip; tip_y = CLAMP (tip_pos, 0, popover_height); final_x = base; final_y = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2, border_radius + TAIL_GAP_WIDTH, popover_height - border_radius); } *initial_x_out = initial_x; *initial_y_out = initial_y; *tip_x_out = tip_x; *tip_y_out = tip_y; *final_x_out = final_x; *final_y_out = final_y; } static void get_margin (GtkWidget *widget, GtkBorder *border) { GtkStyleContext *context; context = gtk_widget_get_style_context (widget); gtk_style_context_get_margin (context, border); } static void gtk_popover_get_rect_for_size (GtkPopover *popover, int popover_width, int popover_height, GdkRectangle *rect) { GtkWidget *widget = GTK_WIDGET (popover); int x, y, w, h; GtkBorder margin; get_margin (widget, &margin); x = 0; y = 0; w = popover_width; h = popover_height; x += MAX (TAIL_HEIGHT, margin.left); y += MAX (TAIL_HEIGHT, margin.top); w -= x + MAX (TAIL_HEIGHT, margin.right); h -= y + MAX (TAIL_HEIGHT, margin.bottom); rect->x = x; rect->y = y; rect->width = w; rect->height = h; } static void gtk_popover_get_rect_coords (GtkPopover *popover, int *x_out, int *y_out, int *w_out, int *h_out) { GtkWidget *widget = GTK_WIDGET (popover); GdkRectangle rect; GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); gtk_popover_get_rect_for_size (popover, allocation.width, allocation.height, &rect); *x_out = rect.x; *y_out = rect.y; *w_out = rect.width; *h_out = rect.height; } static void gtk_popover_apply_tail_path (GtkPopover *popover, cairo_t *cr) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); gint initial_x, initial_y; gint tip_x, tip_y; gint final_x, final_y; GtkStyleContext *context; GtkBorder border; if (!priv->relative_to) return; context = gtk_widget_get_style_context (priv->contents_widget); gtk_style_context_get_border (context, &border); cairo_set_line_width (cr, 1); gtk_popover_get_gap_coords (popover, &initial_x, &initial_y, &tip_x, &tip_y, &final_x, &final_y); cairo_move_to (cr, initial_x, initial_y); cairo_line_to (cr, tip_x, tip_y); cairo_line_to (cr, final_x, final_y); } static void gtk_popover_fill_border_path (GtkPopover *popover, cairo_t *cr) { GtkWidget *widget = GTK_WIDGET (popover); GtkAllocation allocation; GtkStyleContext *context; int x, y, w, h; GskRoundedRect box; context = gtk_widget_get_style_context (widget); gtk_widget_get_allocation (widget, &allocation); cairo_set_source_rgba (cr, 0, 0, 0, 1); gtk_popover_apply_tail_path (popover, cr); cairo_close_path (cr); cairo_fill (cr); gtk_popover_get_rect_coords (popover, &x, &y, &w, &h); gtk_rounded_boxes_init_for_style (&box, NULL, NULL, gtk_style_context_lookup_style (context), x, y, w, h); gsk_rounded_rect_path (&box, cr); cairo_fill (cr); } static void gtk_popover_update_shape (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *widget = GTK_WIDGET (popover); if (priv->has_arrow) { cairo_surface_t *cairo_surface; cairo_region_t *region; cairo_t *cr; cairo_surface = gdk_surface_create_similar_surface (priv->surface, CAIRO_CONTENT_COLOR_ALPHA, gdk_surface_get_width (priv->surface), gdk_surface_get_height (priv->surface)); cr = cairo_create (cairo_surface); gtk_popover_fill_border_path (popover, cr); cairo_destroy (cr); region = gdk_cairo_region_create_from_surface (cairo_surface); cairo_surface_destroy (cairo_surface); gtk_widget_input_shape_combine_region (widget, region); cairo_region_destroy (region); } else gtk_widget_input_shape_combine_region (widget, NULL); } static gint get_border_radius (GtkWidget *widget) { GtkStyleContext *context; gint border_radius; context = gtk_widget_get_style_context (widget); gtk_style_context_get (context, GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius, NULL); return border_radius; } static gint get_minimal_size (GtkPopover *popover, GtkOrientation orientation) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkPositionType pos; gint minimal_size; int tail_gap_width = priv->has_arrow ? TAIL_GAP_WIDTH : 0; minimal_size = 2 * get_border_radius (GTK_WIDGET (popover)); pos = priv->position; if ((orientation == GTK_ORIENTATION_HORIZONTAL && POS_IS_VERTICAL (pos)) || (orientation == GTK_ORIENTATION_VERTICAL && !POS_IS_VERTICAL (pos))) minimal_size += tail_gap_width; return minimal_size; } static void gtk_popover_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); int minimal_size; int tail_height = priv->has_arrow ? TAIL_HEIGHT : 0; if (for_size >= 0) for_size -= tail_height; gtk_widget_measure (priv->contents_widget, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline); minimal_size = get_minimal_size (popover, orientation); *minimum = MAX (*minimum, minimal_size); *natural = MAX (*natural, minimal_size); *minimum += tail_height; *natural += tail_height; } static void gtk_popover_size_allocate (GtkWidget *widget, int width, int height, int baseline) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkAllocation child_alloc; int tail_height = priv->has_arrow ? TAIL_HEIGHT : 0; gtk_popover_move_resize (popover); switch (priv->final_position) { case GTK_POS_TOP: child_alloc.x = tail_height / 2; child_alloc.y = 0; break; case GTK_POS_BOTTOM: child_alloc.x = tail_height / 2; child_alloc.y = tail_height; break; case GTK_POS_LEFT: child_alloc.x = 0; child_alloc.y = tail_height / 2; break; case GTK_POS_RIGHT: child_alloc.x = tail_height; child_alloc.y = tail_height / 2; break; default: break; } child_alloc.width = width - tail_height; child_alloc.height = height - tail_height; gtk_widget_size_allocate (priv->contents_widget, &child_alloc, baseline); if (priv->surface) { gtk_popover_update_shape (popover); g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref); } } static void create_arrow_render_node (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); GtkWidget *widget = GTK_WIDGET (popover); GtkStyleContext *context; GtkBorder border; cairo_t *cr; GtkSnapshot *snapshot; snapshot = gtk_snapshot_new (); cr = gtk_snapshot_append_cairo (snapshot, &GRAPHENE_RECT_INIT ( 0, 0, gtk_widget_get_width (widget), gtk_widget_get_height (widget) )); /* Clip to the arrow shape */ cairo_save (cr); gtk_popover_apply_tail_path (popover, cr); cairo_clip (cr); context = gtk_widget_get_style_context (widget); gtk_style_context_save_to_node (context, priv->arrow_node); gtk_style_context_get_border (context, &border); /* Render the arrow background */ gtk_render_background (context, cr, 0, 0, gtk_widget_get_width (widget), gtk_widget_get_height (widget)); /* Render the border of the arrow tip */ if (border.bottom > 0) { GdkRGBA *border_color; gtk_style_context_get (context, "border-color", &border_color, NULL); gtk_popover_apply_tail_path (popover, cr); gdk_cairo_set_source_rgba (cr, border_color); cairo_set_line_width (cr, border.bottom + 1); cairo_stroke (cr); gdk_rgba_free (border_color); } cairo_restore (cr); cairo_destroy (cr); gtk_style_context_restore (context); priv->arrow_render_node = gtk_snapshot_free_to_node (snapshot); } static void gtk_popover_snapshot (GtkWidget *widget, GtkSnapshot *snapshot) { GtkPopover *popover = GTK_POPOVER (widget); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); gtk_widget_snapshot_child (widget, priv->contents_widget, snapshot); if (priv->has_arrow) { if (!priv->arrow_render_node) create_arrow_render_node (popover); gtk_snapshot_append_node (snapshot, priv->arrow_render_node); } } static void gtk_popover_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkPopover *popover = GTK_POPOVER (object); switch (prop_id) { case PROP_RELATIVE_TO: gtk_popover_set_relative_to (popover, g_value_get_object (value)); break; case PROP_POINTING_TO: gtk_popover_set_pointing_to (popover, g_value_get_boxed (value)); break; case PROP_POSITION: gtk_popover_set_position (popover, g_value_get_enum (value)); break; case PROP_AUTOHIDE: gtk_popover_set_autohide (popover, g_value_get_boolean (value)); break; case PROP_DEFAULT_WIDGET: gtk_popover_set_default_widget (popover, g_value_get_object (value)); break; case PROP_HAS_ARROW: gtk_popover_set_has_arrow (popover, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_popover_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkPopover *popover = GTK_POPOVER (object); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); switch (prop_id) { case PROP_RELATIVE_TO: g_value_set_object (value, priv->relative_to); break; case PROP_POINTING_TO: g_value_set_boxed (value, &priv->pointing_to); break; case PROP_POSITION: g_value_set_enum (value, priv->position); break; case PROP_AUTOHIDE: g_value_set_boolean (value, priv->autohide); break; case PROP_DEFAULT_WIDGET: g_value_set_object (value, priv->default_widget); break; case PROP_HAS_ARROW: g_value_set_boolean (value, priv->has_arrow); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_popover_add (GtkContainer *container, GtkWidget *child) { GtkPopover *popover = GTK_POPOVER (container); GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); _gtk_bin_set_child (GTK_BIN (popover), child); gtk_widget_set_parent (child, priv->contents_widget); } static void gtk_popover_remove (GtkContainer *container, GtkWidget *child) { GtkPopover *popover = GTK_POPOVER (container); _gtk_bin_set_child (GTK_BIN (popover), NULL); gtk_widget_unparent (child); } static void gtk_popover_class_init (GtkPopoverClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass); object_class->dispose = gtk_popover_dispose; object_class->finalize = gtk_popover_finalize; object_class->set_property = gtk_popover_set_property; object_class->get_property = gtk_popover_get_property; widget_class->realize = gtk_popover_realize; widget_class->unrealize = gtk_popover_unrealize; widget_class->map = gtk_popover_map; widget_class->unmap = gtk_popover_unmap; widget_class->show = gtk_popover_show; widget_class->hide = gtk_popover_hide; widget_class->measure = gtk_popover_measure; widget_class->size_allocate = gtk_popover_size_allocate; widget_class->snapshot = gtk_popover_snapshot; container_class->add = gtk_popover_add; container_class->remove = gtk_popover_remove; klass->activate_default = gtk_popover_activate_default; properties[PROP_RELATIVE_TO] = g_param_spec_object ("relative-to", P_("Relative to"), P_("Widget the bubble window points to"), GTK_TYPE_WIDGET, GTK_PARAM_READWRITE); properties[PROP_POINTING_TO] = g_param_spec_boxed ("pointing-to", P_("Pointing to"), P_("Rectangle the bubble window points to"), GDK_TYPE_RECTANGLE, GTK_PARAM_READWRITE); properties[PROP_POSITION] = g_param_spec_enum ("position", P_("Position"), P_("Position to place the bubble window"), GTK_TYPE_POSITION_TYPE, GTK_POS_BOTTOM, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); properties[PROP_AUTOHIDE] = g_param_spec_boolean ("autohide", P_("Autohide"), P_("Whether to dismiss the popover on outside clicks"), TRUE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); properties[PROP_DEFAULT_WIDGET] = g_param_spec_object ("default-widget", P_("Default widget"), P_("The default widget"), GTK_TYPE_WIDGET, GTK_PARAM_READWRITE|G_PARAM_STATIC_STRINGS|G_PARAM_EXPLICIT_NOTIFY); properties[PROP_HAS_ARROW] = g_param_spec_boolean ("has-arrow", P_("Has Arrow"), P_("Whether to draw an arrow"), TRUE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); g_object_class_install_properties (object_class, NUM_PROPERTIES, properties); signals[CLOSED] = g_signal_new (I_("closed"), G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkPopoverClass, closed), NULL, NULL, NULL, G_TYPE_NONE, 0); signals[ACTIVATE_DEFAULT] = g_signal_new (I_("activate-default"), G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkPopoverClass, activate_default), NULL, NULL, NULL, G_TYPE_NONE, 0); gtk_widget_class_set_css_name (widget_class, "popover"); } GtkWidget * gtk_popover_new (GtkWidget *relative_to) { return GTK_WIDGET (g_object_new (GTK_TYPE_POPOVER, "relative-to", relative_to, NULL)); } static void size_changed (GtkWidget *widget, int width, int height, int baseline, GtkPopover *popover) { gtk_popover_move_resize (popover); } void gtk_popover_set_default_widget (GtkPopover *popover, GtkWidget *widget) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); if (priv->default_widget == widget) return; if (priv->default_widget) { _gtk_widget_set_has_default (priv->default_widget, FALSE); gtk_widget_queue_draw (priv->default_widget); g_object_notify (G_OBJECT (priv->default_widget), "has-default"); } g_set_object (&priv->default_widget, widget); if (priv->default_widget) { _gtk_widget_set_has_default (priv->default_widget, TRUE); gtk_widget_queue_draw (priv->default_widget); g_object_notify (G_OBJECT (priv->default_widget), "has-default"); } g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_DEFAULT_WIDGET]); } static void gtk_popover_native_interface_init (GtkNativeInterface *iface) { iface->get_surface = gtk_popover_native_get_surface; iface->get_renderer = gtk_popover_native_get_renderer; iface->get_surface_transform = gtk_popover_native_get_surface_transform; iface->check_resize = gtk_popover_native_check_resize; } /** * gtk_popover_set_relative_to: * @popover: a #GtkPopover * @relative_to: (allow-none): a #GtkWidget * * Sets a new widget to be attached to @popover. If @popover is * visible, the position will be updated. * * Note: the ownership of popovers is always given to their @relative_to * widget, so if @relative_to is set to %NULL on an attached @popover, it * will be detached from its previous widget, and consequently destroyed * unless extra references are kept. **/ void gtk_popover_set_relative_to (GtkPopover *popover, GtkWidget *relative_to) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); g_object_ref (popover); if (priv->relative_to) { g_signal_handlers_disconnect_by_func (priv->relative_to, size_changed, popover); gtk_widget_unparent (GTK_WIDGET (popover)); } priv->relative_to = relative_to; if (priv->relative_to) { g_signal_connect (priv->relative_to, "size-allocate", G_CALLBACK (size_changed), popover); gtk_css_node_set_parent (gtk_widget_get_css_node (GTK_WIDGET (popover)), gtk_widget_get_css_node (relative_to)); gtk_widget_set_parent (GTK_WIDGET (popover), relative_to); } g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_RELATIVE_TO]); g_object_unref (popover); } /** * gtk_popover_get_relative_to: * @popover: a #GtkPopover * * Returns the widget @popover is currently attached to * * Returns: (transfer none): a #GtkWidget **/ GtkWidget * gtk_popover_get_relative_to (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_val_if_fail (GTK_IS_POPOVER (popover), NULL); return priv->relative_to; } /** * gtk_popover_set_pointing_to: * @popover: a #GtkPopover * @rect: rectangle to point to * * Sets the rectangle that @popover will point to, in the * coordinate space of the widget @popover is attached to, * see gtk_popover_set_relative_to(). **/ void gtk_popover_set_pointing_to (GtkPopover *popover, const GdkRectangle *rect) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); if (rect) { priv->pointing_to = *rect; priv->has_pointing_to = TRUE; } else priv->has_pointing_to = FALSE; g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_POINTING_TO]); } /** * gtk_popover_get_pointing_to: * @popover: a #GtkPopover * @rect: (out): location to store the rectangle * * If a rectangle to point to has been set, this function will * return %TRUE and fill in @rect with such rectangle, otherwise * it will return %FALSE and fill in @rect with the attached * widget coordinates. * * Returns: %TRUE if a rectangle to point to was set. **/ gboolean gtk_popover_get_pointing_to (GtkPopover *popover, GdkRectangle *rect) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE); g_return_val_if_fail (rect != NULL, FALSE); if (priv->has_pointing_to) *rect = priv->pointing_to; else if (priv->relative_to) { graphene_rect_t r; if (!gtk_widget_compute_bounds (priv->relative_to, priv->relative_to, &r)) return FALSE; rect->x = floorf (r.origin.x); rect->y = floorf (r.origin.y); rect->width = ceilf (r.size.width); rect->height = ceilf (r.size.height); } return priv->has_pointing_to; } /** * gtk_popover_set_position: * @popover: a #GtkPopover * @position: preferred popover position * * Sets the preferred position for @popover to appear. If the @popover * is currently visible, it will be immediately updated. * * This preference will be respected where possible, although * on lack of space (eg. if close to the window edges), the * #GtkPopover may choose to appear on the opposite side **/ void gtk_popover_set_position (GtkPopover *popover, GtkPositionType position) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); if (priv->position == position) return; priv->position = position; priv->final_position = position; g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_POSITION]); } /** * gtk_popover_get_position: * @popover: a #GtkPopover * * Returns the preferred position of @popover. * * Returns: The preferred position. **/ GtkPositionType gtk_popover_get_position (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_val_if_fail (GTK_IS_POPOVER (popover), GTK_POS_TOP); return priv->position; } /** * gtk_popover_set_autohide: * @popover: a #GtkPopover * @autohide: #TRUE to dismiss the popover on outside clicks * * Sets whether @popover is modal. * * A modal popover will grab the keyboard focus on it when being * displayed. Clicking outside the popover area or pressing Esc will * dismiss the popover. **/ void gtk_popover_set_autohide (GtkPopover *popover, gboolean autohide) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); autohide = autohide != FALSE; if (priv->autohide == autohide) return; priv->autohide = autohide; g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_AUTOHIDE]); } /** * gtk_popover_get_autohide: * @popover: a #GtkPopover * * Returns whether the popover is modal. * * See gtk_popover_set_autohide() for the * implications of this. * * Returns: #TRUE if @popover is modal **/ gboolean gtk_popover_get_autohide (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE); return priv->autohide; } /** * gtk_popover_popup: * @popover: a #GtkPopover * * Pops @popover up. This is different than a gtk_widget_show() call * in that it shows the popover with a transition. If you want to show * the popover without a transition, use gtk_widget_show(). */ void gtk_popover_popup (GtkPopover *popover) { g_return_if_fail (GTK_IS_POPOVER (popover)); gtk_widget_show (GTK_WIDGET (popover)); } /** * gtk_popover_popdown: * @popover: a #GtkPopover * * Pops @popover down.This is different than a gtk_widget_hide() call * in that it shows the popover with a transition. If you want to hide * the popover without a transition, use gtk_widget_hide(). */ void gtk_popover_popdown (GtkPopover *popover) { g_return_if_fail (GTK_IS_POPOVER (popover)); gtk_widget_hide (GTK_WIDGET (popover)); } GtkWidget * gtk_popover_get_contents_widget (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); return priv->contents_widget; } /** * gtk_popover_set_has_arrow: * @popover: a #GtkPopover * @has_arrow: %TRUE to draw an arrow * * Sets whether this popover should draw an arrow * pointing at the widget it is relative to. */ void gtk_popover_set_has_arrow (GtkPopover *popover, gboolean has_arrow) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_if_fail (GTK_IS_POPOVER (popover)); if (priv->has_arrow == has_arrow) return; priv->has_arrow = has_arrow; g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_HAS_ARROW]); gtk_widget_queue_resize (GTK_WIDGET (popover)); } /** * gtk_popover_get_has_arrow: * @popover: a #GtkPopover * * Gets whether this popover is showing an arrow * pointing at the widget that it is relative to. * * Returns: whether the popover has an arrow */ gboolean gtk_popover_get_has_arrow (GtkPopover *popover) { GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover); g_return_val_if_fail (GTK_IS_POPOVER (popover), TRUE); return priv->has_arrow; }