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gtk2/gtk/gtkpopover.c
Benjamin Otte f656cbdc5b Ensure all natives request at least a 1px wide surface 
FIXME: Is this necessary?

Could the surfaces just clamp to 1x1 themselves?
We recently declared that surfaces can decide on whatever size they want
so natives need to inspect the size they requested anyway.
2020-02-22 05:50:07 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2019 Red Hat, Inc.
*
* Authors:
* - Matthias Clasen <mclasen@redhat.com>
*
* 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 <http://www.gnu.org/licenses/>.
*/
/**
* 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().
*
* |[
* <section>
* <attribute name="display-hint">horizontal-buttons</attribute>
* <item>
* <attribute name="label">Cut</attribute>
* <attribute name="action">app.cut</attribute>
* <attribute name="verb-icon">edit-cut-symbolic</attribute>
* </item>
* <item>
* <attribute name="label">Copy</attribute>
* <attribute name="action">app.copy</attribute>
* <attribute name="verb-icon">edit-copy-symbolic</attribute>
* </item>
* <item>
* <attribute name="label">Paste</attribute>
* <attribute name="action">app.paste</attribute>
* <attribute name="verb-icon">edit-paste-symbolic</attribute>
* </item>
* </section>
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* popover[.menu]
* ├── arrow
* ╰── contents.background
* ╰── <child>
* ]|
*
* 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 "gtkcsstypesprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkcssnumbervalueprivate.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;
GdkPopupLayout *layout;
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)
{
GtkCssStyle *style;
style = gtk_css_node_get_style (gtk_widget_get_css_node (GTK_WIDGET (native)));
*x = _gtk_css_number_value_get (style->size->margin_left, 100) +
_gtk_css_number_value_get (style->border->border_left_width, 100) +
_gtk_css_number_value_get (style->size->padding_left, 100);
*y = _gtk_css_number_value_get (style->size->margin_top, 100) +
_gtk_css_number_value_get (style->border->border_top_width, 100) +
_gtk_css_number_value_get (style->size->padding_top, 100);
}
static gboolean
is_gravity_facing_north (GdkGravity gravity)
{
switch (gravity)
{
case GDK_GRAVITY_NORTH_EAST:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_STATIC:
return TRUE;
case GDK_GRAVITY_SOUTH_WEST:
case GDK_GRAVITY_WEST:
case GDK_GRAVITY_SOUTH_EAST:
case GDK_GRAVITY_EAST:
case GDK_GRAVITY_CENTER:
case GDK_GRAVITY_SOUTH:
return FALSE;
default:
g_assert_not_reached ();
}
}
static gboolean
is_gravity_facing_south (GdkGravity gravity)
{
switch (gravity)
{
case GDK_GRAVITY_SOUTH_WEST:
case GDK_GRAVITY_SOUTH_EAST:
case GDK_GRAVITY_SOUTH:
return TRUE;
case GDK_GRAVITY_NORTH_EAST:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_WEST:
case GDK_GRAVITY_EAST:
case GDK_GRAVITY_CENTER:
return FALSE;
default:
g_assert_not_reached ();
}
}
static gboolean
is_gravity_facing_west (GdkGravity gravity)
{
switch (gravity)
{
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_SOUTH_WEST:
case GDK_GRAVITY_WEST:
return TRUE;
case GDK_GRAVITY_NORTH_EAST:
case GDK_GRAVITY_SOUTH_EAST:
case GDK_GRAVITY_EAST:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_CENTER:
case GDK_GRAVITY_SOUTH:
return FALSE;
default:
g_assert_not_reached ();
}
}
static gboolean
is_gravity_facing_east (GdkGravity gravity)
{
switch (gravity)
{
case GDK_GRAVITY_NORTH_EAST:
case GDK_GRAVITY_SOUTH_EAST:
case GDK_GRAVITY_EAST:
return TRUE;
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_SOUTH_WEST:
case GDK_GRAVITY_WEST:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_CENTER:
case GDK_GRAVITY_SOUTH:
return FALSE;
default:
g_assert_not_reached ();
}
}
static gboolean
did_flip_horizontally (GdkGravity original_gravity,
GdkGravity final_gravity)
{
g_return_val_if_fail (original_gravity, FALSE);
g_return_val_if_fail (final_gravity, FALSE);
if (is_gravity_facing_east (original_gravity) &&
is_gravity_facing_west (final_gravity))
return TRUE;
if (is_gravity_facing_west (original_gravity) &&
is_gravity_facing_east (final_gravity))
return TRUE;
return FALSE;
}
static gboolean
did_flip_vertically (GdkGravity original_gravity,
GdkGravity final_gravity)
{
g_return_val_if_fail (original_gravity, FALSE);
g_return_val_if_fail (final_gravity, FALSE);
if (is_gravity_facing_north (original_gravity) &&
is_gravity_facing_south (final_gravity))
return TRUE;
if (is_gravity_facing_south (original_gravity) &&
is_gravity_facing_north (final_gravity))
return TRUE;
return FALSE;
}
static void
update_popover_layout (GtkPopover *popover,
GdkPopupLayout *layout)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GdkRectangle final_rect;
gboolean flipped_x;
gboolean flipped_y;
g_clear_pointer (&priv->layout, gdk_popup_layout_unref);
priv->layout = layout;
final_rect = (GdkRectangle) {
.width = gdk_surface_get_width (priv->surface),
.height = gdk_surface_get_height (priv->surface),
};
gdk_surface_get_position (priv->surface,
&final_rect.x,
&final_rect.y);
flipped_x =
did_flip_horizontally (gdk_popup_layout_get_rect_anchor (layout),
gdk_surface_get_popup_rect_anchor (priv->surface)) &&
did_flip_horizontally (gdk_popup_layout_get_surface_anchor (layout),
gdk_surface_get_popup_surface_anchor (priv->surface));
flipped_y =
did_flip_vertically (gdk_popup_layout_get_rect_anchor (layout),
gdk_surface_get_popup_rect_anchor (priv->surface)) &&
did_flip_vertically (gdk_popup_layout_get_surface_anchor (layout),
gdk_surface_get_popup_surface_anchor (priv->surface));
gtk_widget_allocate (GTK_WIDGET (popover),
gdk_surface_get_width (priv->surface),
gdk_surface_get_height (priv->surface),
-1, NULL);
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;
}
g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref);
gtk_widget_queue_draw (GTK_WIDGET (popover));
}
static GdkPopupLayout *
create_popup_layout (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GdkRectangle rect;
GdkGravity parent_anchor;
GdkGravity surface_anchor;
GdkAnchorHints anchor_hints;
GdkPopupLayout *layout;
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 ();
}
layout = gdk_popup_layout_new (&rect,
parent_anchor,
surface_anchor);
gdk_popup_layout_set_anchor_hints (layout, anchor_hints);
return layout;
}
static void
present_popup (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GtkRequisition req;
GdkPopupLayout *layout;
layout = create_popup_layout (popover);
gtk_widget_get_preferred_size (GTK_WIDGET (popover), NULL, &req);
if (gdk_surface_present_popup (priv->surface,
MAX (req.width, 1),
MAX (req.height, 1),
layout))
update_popover_layout (popover, layout);
}
static void
gtk_popover_native_check_resize (GtkNative *native)
{
GtkPopover *popover = GTK_POPOVER (native);
GtkWidget *widget = GTK_WIDGET (popover);
if (!_gtk_widget_get_alloc_needed (widget))
gtk_widget_ensure_allocate (widget);
else if (gtk_widget_get_visible (widget))
present_popup (popover);
}
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_is_visible (widget))
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
popup_layout_changed (GdkSurface *surface,
GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
update_popover_layout (popover, gdk_popup_layout_ref (priv->layout));
}
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;
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, "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, g_quark_from_static_string ("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));
gtk_css_node_add_class (gtk_widget_get_css_node (GTK_WIDGET (popover)),
g_quark_from_static_string (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);
GdkSurface *parent;
parent = gtk_native_get_surface (gtk_widget_get_native (priv->relative_to));
priv->surface = gdk_surface_new_popup (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, "popup-layout-changed", G_CALLBACK (popup_layout_changed), 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, popup_layout_changed, 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_widget_realize (widget);
present_popup (popover);
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);
if (priv->surface && gdk_surface_is_visible (priv->surface))
present_popup (popover);
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;
present_popup (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)
{
GtkPopover *popover = GTK_POPOVER (object);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_clear_pointer (&priv->layout, gdk_popup_layout_unref);
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;
int border_top, border_right, border_bottom;
int border_radius;
int popover_width, popover_height;
GtkCssStyle *style;
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;
pos = priv->final_position;
style = gtk_css_node_get_style (gtk_widget_get_css_node (priv->contents_widget));
border_radius = _gtk_css_number_value_get (style->border->border_top_left_radius, 100);
border_top = _gtk_css_number_value_get (style->border->border_top_width, 100);
border_right = _gtk_css_number_value_get (style->border->border_right_width, 100);
border_bottom = _gtk_css_number_value_get (style->border->border_bottom_width, 100);
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)
{
GtkCssStyle *style;
style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
border->top = _gtk_css_number_value_get (style->size->margin_top, 100);
border->right = _gtk_css_number_value_get (style->size->margin_right, 100);
border->bottom = _gtk_css_number_value_get (style->size->margin_bottom, 100);
border->left = _gtk_css_number_value_get (style->size->margin_left, 100);
}
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
get_border (GtkCssNode *node,
GtkBorder *border)
{
GtkCssStyle *style;
style = gtk_css_node_get_style (node);
border->top = _gtk_css_number_value_get (style->border->border_top_width, 100);
border->right = _gtk_css_number_value_get (style->border->border_right_width, 100);
border->bottom = _gtk_css_number_value_get (style->border->border_bottom_width, 100);
border->left = _gtk_css_number_value_get (style->border->border_left_width, 100);
}
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;
GtkBorder border;
if (!priv->relative_to)
return;
get_border (priv->arrow_node, &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;
int x, y, w, h;
GskRoundedRect box;
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_css_node_get_style (gtk_widget_get_css_node (widget)),
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)
{
GtkCssStyle *style;
style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
return round (_gtk_css_number_value_get (style->border->border_top_left_radius, 100));
}
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;
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);
get_border (priv->arrow_node, &border);
context = gtk_widget_get_style_context (widget);
gtk_style_context_save_to_node (context, priv->arrow_node);
/* 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)
{
GtkCssStyle *style;
const GdkRGBA *border_color;
style = gtk_css_node_get_style (priv->arrow_node);
border_color = gtk_css_color_value_get_rgba (style->border->border_left_color ? style->border->border_left_color : style->core->color);
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);
}
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
relative_to_size_changed (GtkWidget *widget,
int width,
int height,
int baseline,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->surface && gdk_surface_is_visible (priv->surface))
present_popup (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,
relative_to_size_changed,
popover);
gtk_widget_unparent (GTK_WIDGET (popover));
}
priv->relative_to = relative_to;
if (priv->relative_to)
{
g_signal_connect_object (priv->relative_to, "size-allocate",
G_CALLBACK (relative_to_size_changed), popover, 0);
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.
*
* Called this function on an already showing popup with a new autohide value
* different from the current one, will cause the popup to be hidden.
**/
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;
gtk_widget_unrealize (GTK_WIDGET (popover));
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;
}
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