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gtk2/gtk/gtkpopover.c
Matthias Clasen 2ef72442ec docs: Fix the links for keybinding signals 
GtkBindingSignal does not exist anymore, so link to
GtkSignalAction for an explanation of keybinding signals.
2020-11-17 07:34:52 -05:00

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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, set with gtk_widget_set_parent(). 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 "gtkeventcontrollerfocus.h"
#include "gtkbinlayout.h"
#include "gtkenums.h"
#include "gtktypebuiltins.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 "gtkcsscolorvalueprivate.h"
#include "gtksnapshot.h"
#include "gtkshortcutmanager.h"
#include "gtkbuildable.h"
#include "gtktooltipprivate.h"
#include "gtkcssboxesimplprivate.h"
#include "gtknativeprivate.h"
#include "gtkrender.h"
#include "gtkstylecontextprivate.h"
#include "gtkroundedboxprivate.h"
#include "gsk/gskroundedrectprivate.h"
#define MNEMONICS_DELAY 300 /* ms */
#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;
GdkRectangle pointing_to;
gboolean has_pointing_to;
guint surface_transform_changed_cb;
GtkPositionType position;
gboolean autohide;
gboolean has_arrow;
gboolean mnemonics_visible;
gboolean disable_auto_mnemonics;
gboolean cascade_popdown;
int x_offset;
int y_offset;
guint mnemonics_display_timeout_id;
GtkWidget *child;
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_POINTING_TO = 1,
PROP_POSITION,
PROP_AUTOHIDE,
PROP_DEFAULT_WIDGET,
PROP_HAS_ARROW,
PROP_MNEMONICS_VISIBLE,
PROP_CHILD,
PROP_CASCADE_POPDOWN,
NUM_PROPERTIES
};
static GParamSpec *properties[NUM_PROPERTIES] = { NULL };
static void gtk_popover_buildable_init (GtkBuildableIface *iface);
static void gtk_popover_shortcut_manager_interface_init (GtkShortcutManagerInterface *iface);
static void gtk_popover_native_interface_init (GtkNativeInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkPopover, gtk_popover, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkPopover)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_popover_buildable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SHORTCUT_MANAGER,
gtk_popover_shortcut_manager_interface_init)
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,
double *x,
double *y)
{
GtkCssBoxes css_boxes;
const graphene_rect_t *margin_rect;
gtk_css_boxes_init (&css_boxes, GTK_WIDGET (native));
margin_rect = gtk_css_boxes_get_margin_rect (&css_boxes);
*x = - margin_rect->origin.x;
*y = - margin_rect->origin.y;
}
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;
GdkPopup *popup = GDK_POPUP (priv->surface);
GtkPositionType position;
g_clear_pointer (&priv->layout, gdk_popup_layout_unref);
priv->layout = layout;
final_rect = (GdkRectangle) {
.x = gdk_popup_get_position_x (GDK_POPUP (priv->surface)),
.y = gdk_popup_get_position_y (GDK_POPUP (priv->surface)),
.width = gdk_surface_get_width (priv->surface),
.height = gdk_surface_get_height (priv->surface),
};
flipped_x =
did_flip_horizontally (gdk_popup_layout_get_rect_anchor (layout),
gdk_popup_get_rect_anchor (popup)) &&
did_flip_horizontally (gdk_popup_layout_get_surface_anchor (layout),
gdk_popup_get_surface_anchor (popup));
flipped_y =
did_flip_vertically (gdk_popup_layout_get_rect_anchor (layout),
gdk_popup_get_rect_anchor (popup)) &&
did_flip_vertically (gdk_popup_layout_get_surface_anchor (layout),
gdk_popup_get_surface_anchor (popup));
priv->final_rect = final_rect;
position = priv->final_position;
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;
}
if (priv->final_position != position)
{
gtk_widget_queue_allocate (GTK_WIDGET (popover));
g_clear_pointer (&priv->arrow_render_node, gsk_render_node_unref);
}
gtk_widget_allocate (GTK_WIDGET (popover),
gdk_surface_get_width (priv->surface),
gdk_surface_get_height (priv->surface),
-1, NULL);
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;
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (popover));
gtk_widget_get_surface_allocation (parent, &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);
if (priv->x_offset || priv->y_offset)
gdk_popup_layout_set_offset (layout, priv->x_offset, priv->y_offset);
return layout;
}
static gboolean
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_popup_present (GDK_POPUP (priv->surface),
MAX (req.width, 1),
MAX (req.height, 1),
layout))
{
update_popover_layout (popover, layout);
return TRUE;
}
return FALSE;
}
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 gboolean
gtk_popover_has_mnemonic_modifier_pressed (GtkPopover *popover)
{
GList *seats, *s;
gboolean retval = FALSE;
seats = gdk_display_list_seats (gtk_widget_get_display (GTK_WIDGET (popover)));
for (s = seats; s; s = s->next)
{
GdkDevice *dev = gdk_seat_get_keyboard (s->data);
GdkModifierType mask;
mask = gdk_device_get_modifier_state (dev);
if ((mask & gtk_accelerator_get_default_mod_mask ()) == GDK_ALT_MASK)
{
retval = TRUE;
break;
}
}
g_list_free (seats);
return retval;
}
static gboolean
schedule_mnemonics_visible_cb (gpointer data)
{
GtkPopover *popover = data;
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
priv->mnemonics_display_timeout_id = 0;
gtk_popover_set_mnemonics_visible (popover, TRUE);
return G_SOURCE_REMOVE;
}
static void
gtk_popover_schedule_mnemonics_visible (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->mnemonics_display_timeout_id)
return;
priv->mnemonics_display_timeout_id =
g_timeout_add (MNEMONICS_DELAY, schedule_mnemonics_visible_cb, popover);
g_source_set_name_by_id (priv->mnemonics_display_timeout_id, "[gtk] popover_schedule_mnemonics_visible_cb");
}
static void
gtk_popover_focus_in (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->disable_auto_mnemonics)
return;
if (gtk_widget_get_visible (widget))
{
if (gtk_popover_has_mnemonic_modifier_pressed (popover))
gtk_popover_schedule_mnemonics_visible (popover);
}
}
static void
gtk_popover_focus_out (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->disable_auto_mnemonics)
return;
gtk_popover_set_mnemonics_visible (popover, FALSE);
}
static void
update_mnemonics_visible (GtkPopover *popover,
guint keyval,
GdkModifierType state,
gboolean visible)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->disable_auto_mnemonics)
return;
if ((keyval == GDK_KEY_Alt_L || keyval == GDK_KEY_Alt_R) &&
((state & (gtk_accelerator_get_default_mod_mask ()) & ~(GDK_ALT_MASK)) == 0))
{
if (visible)
gtk_popover_schedule_mnemonics_visible (popover);
else
gtk_popover_set_mnemonics_visible (popover, FALSE);
}
}
static gboolean
gtk_popover_key_pressed (GtkWidget *widget,
guint keyval,
guint keycode,
GdkModifierType state)
{
GtkPopover *popover = GTK_POPOVER (widget);
if (keyval == GDK_KEY_Escape)
{
gtk_popover_popdown (popover);
return TRUE;
}
update_mnemonics_visible (popover, keyval, state, TRUE);
return FALSE;
}
static gboolean
gtk_popover_key_released (GtkWidget *widget,
guint keyval,
guint keycode,
GdkModifierType state)
{
GtkPopover *popover = GTK_POPOVER (widget);
update_mnemonics_visible (popover, keyval, state, FALSE);
return FALSE;
}
static void
surface_mapped_changed (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
gtk_widget_set_visible (widget, gdk_surface_get_mapped (priv->surface));
}
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 (GTK_WIDGET (popover))));
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;
priv->cascade_popdown = FALSE;
controller = gtk_event_controller_key_new ();
g_signal_connect_swapped (controller, "key-pressed", G_CALLBACK (gtk_popover_key_pressed), popover);
g_signal_connect_swapped (controller, "key-released", G_CALLBACK (gtk_popover_key_released), popover);
gtk_widget_add_controller (GTK_WIDGET (popover), controller);
controller = gtk_event_controller_focus_new ();
g_signal_connect_swapped (controller, "enter", G_CALLBACK (gtk_popover_focus_in), popover);
g_signal_connect_swapped (controller, "leave", G_CALLBACK (gtk_popover_focus_out), popover);
gtk_widget_add_controller (widget, 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,
(GtkGizmoFocusFunc)gtk_widget_focus_child,
(GtkGizmoGrabFocusFunc)gtk_widget_grab_focus_child);
gtk_widget_set_layout_manager (priv->contents_widget, gtk_bin_layout_new ());
gtk_widget_set_parent (priv->contents_widget, GTK_WIDGET (popover));
gtk_widget_set_overflow (priv->contents_widget, GTK_OVERFLOW_HIDDEN);
gtk_widget_add_css_class (widget, "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_surface;
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
parent_surface = gtk_native_get_surface (gtk_widget_get_native (parent));
priv->surface = gdk_surface_new_popup (parent_surface, priv->autohide);
gdk_surface_set_widget (priv->surface, widget);
g_signal_connect_swapped (priv->surface, "notify::mapped", G_CALLBACK (surface_mapped_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_mapped_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);
if (!present_popup (popover))
return;
gtk_widget_map (widget);
if (priv->autohide)
{
if (!gtk_widget_get_focus_child (widget))
gtk_widget_child_focus (widget, GTK_DIR_TAB_FORWARD);
gtk_grab_add (widget);
}
}
static void
gtk_popover_hide (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->autohide)
gtk_grab_remove (widget);
gtk_popover_set_mnemonics_visible (GTK_POPOVER (widget), FALSE);
_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_get_mapped (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 *parent;
present_popup (popover);
parent = gtk_widget_get_parent (widget);
priv->surface_transform_changed_cb =
gtk_widget_add_surface_transform_changed_callback (parent,
surface_transform_changed_cb,
popover,
unset_surface_transform_changed_cb);
GTK_WIDGET_CLASS (gtk_popover_parent_class)->map (widget);
}
static void
gtk_popover_unmap (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
gtk_widget_remove_surface_transform_changed_callback (parent,
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);
}
static void
gtk_popover_dispose (GObject *object)
{
GtkPopover *popover = GTK_POPOVER (object);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_clear_object (&priv->default_widget);
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);
if (priv->mnemonics_display_timeout_id)
{
g_source_remove (priv->mnemonics_display_timeout_id);
priv->mnemonics_display_timeout_id = 0;
}
G_OBJECT_CLASS (gtk_popover_parent_class)->finalize (object);
}
static void
gtk_popover_get_gap_coords (GtkPopover *popover,
int *initial_x_out,
int *initial_y_out,
int *tip_x_out,
int *tip_y_out,
int *final_x_out,
int *final_y_out)
{
GtkWidget *widget = GTK_WIDGET (popover);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GdkRectangle rect = { 0 };
int base, tip, tip_pos;
int initial_x, initial_y;
int tip_x, tip_y;
int final_x, final_y;
GtkPositionType pos;
int border_top, border_right, border_bottom;
int border_radius;
int popover_width, popover_height;
GtkCssStyle *style;
GtkWidget *parent;
popover_width = gtk_widget_get_allocated_width (widget);
popover_height = gtk_widget_get_allocated_height (widget);
parent = gtk_widget_get_parent (widget);
gtk_widget_get_surface_allocation (parent, &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_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);
int initial_x, initial_y;
int tip_x, tip_y;
int final_x, final_y;
GtkBorder border;
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (popover));
if (!parent)
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_update_shape (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->has_arrow)
{
GtkCssBoxes content_css_boxes;
const GskRoundedRect *box;
cairo_surface_t *cairo_surface;
cairo_region_t *region;
cairo_t *cr;
double x, y;
double native_x, native_y;
gtk_native_get_surface_transform (GTK_NATIVE (popover), &native_x, &native_y);
gtk_css_boxes_init (&content_css_boxes, priv->contents_widget);
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);
cairo_translate (cr, native_x, native_y);
cairo_set_source_rgba (cr, 0, 0, 0, 1);
gtk_popover_apply_tail_path (popover, cr);
cairo_close_path (cr);
cairo_fill (cr);
box = gtk_css_boxes_get_border_box (&content_css_boxes);
gtk_widget_translate_coordinates (priv->contents_widget, GTK_WIDGET (popover),
0, 0,
&x, &y);
cairo_translate (cr, x, y);
gsk_rounded_rect_path (box, cr);
cairo_fill (cr);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (cairo_surface);
cairo_surface_destroy (cairo_surface);
gdk_surface_set_input_region (priv->surface, region);
cairo_region_destroy (region);
}
else
gdk_surface_set_input_region (priv->surface, NULL);
}
static int
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 int
get_minimal_size (GtkPopover *popover,
GtkOrientation orientation)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
GtkPositionType pos;
int 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);
}
gtk_tooltip_maybe_allocate (GTK_NATIVE (popover));
}
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_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;
case PROP_MNEMONICS_VISIBLE:
gtk_popover_set_mnemonics_visible (popover, g_value_get_boolean (value));
break;
case PROP_CHILD:
gtk_popover_set_child (popover, g_value_get_object (value));
break;
case PROP_CASCADE_POPDOWN:
gtk_popover_set_cascade_popdown (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_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;
case PROP_MNEMONICS_VISIBLE:
g_value_set_boolean (value, priv->mnemonics_visible);
break;
case PROP_CHILD:
g_value_set_object (value, gtk_popover_get_child (popover));
break;
case PROP_CASCADE_POPDOWN:
g_value_set_boolean (value, priv->cascade_popdown);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
add_tab_bindings (GtkWidgetClass *widget_class,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Tab, modifiers,
"move-focus",
"(i)", direction);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_KP_Tab, modifiers,
"move-focus",
"(i)", direction);
}
static void
add_arrow_bindings (GtkWidgetClass *widget_class,
guint keysym,
GtkDirectionType direction)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_widget_class_add_binding_signal (widget_class, keysym, 0,
"move-focus",
"(i)",
direction);
gtk_widget_class_add_binding_signal (widget_class, keysym, GDK_CONTROL_MASK,
"move-focus",
"(i)",
direction);
gtk_widget_class_add_binding_signal (widget_class, keypad_keysym, 0,
"move-focus",
"(i)",
direction);
gtk_widget_class_add_binding_signal (widget_class, keypad_keysym, GDK_CONTROL_MASK,
"move-focus",
"(i)",
direction);
}
static void
gtk_popover_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->child)
{
*hexpand = gtk_widget_compute_expand (priv->child, GTK_ORIENTATION_HORIZONTAL);
*vexpand = gtk_widget_compute_expand (priv->child, GTK_ORIENTATION_VERTICAL);
}
else
{
*hexpand = FALSE;
*vexpand = FALSE;
}
}
static GtkSizeRequestMode
gtk_popover_get_request_mode (GtkWidget *widget)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->child)
return gtk_widget_get_request_mode (priv->child);
else
return GTK_SIZE_REQUEST_CONSTANT_SIZE;
}
static void
gtk_popover_class_init (GtkPopoverClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_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;
widget_class->compute_expand = gtk_popover_compute_expand;
widget_class->get_request_mode = gtk_popover_get_request_mode;
klass->activate_default = gtk_popover_activate_default;
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);
properties[PROP_MNEMONICS_VISIBLE] =
g_param_spec_boolean ("mnemonics-visible",
P_("Mnemonics visible"),
P_("Whether mnemonics are currently visible in this popover"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_CHILD] =
g_param_spec_object ("child",
P_("Child"),
P_("The child widget"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_CASCADE_POPDOWN] =
g_param_spec_boolean ("cascade-popdown",
P_("Cascade popdown"),
P_("Wether the popover pops down after a child popover"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
/**
* GtkPopover::closed:
* @self: the #GtkPopover which received the signal
*
* The ::closed signal is emitted when the popover is closed.
*/
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);
/**
* GtkPopover::activate-default:
* @self: the #GtkPopover which received the signal
*
* The ::activate-default signal is a
* [keybinding signal][GtkSignalAction]
* which gets emitted when the user activates the default widget
* of @self.
*/
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);
add_arrow_bindings (widget_class, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (widget_class, GDK_KEY_Down, GTK_DIR_DOWN);
add_arrow_bindings (widget_class, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (widget_class, GDK_KEY_Right, GTK_DIR_RIGHT);
add_tab_bindings (widget_class, 0, GTK_DIR_TAB_FORWARD);
add_tab_bindings (widget_class, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
add_tab_bindings (widget_class, GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
add_tab_bindings (widget_class, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Return, 0,
"activate-default", NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_ISO_Enter, 0,
"activate-default", NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_KP_Enter, 0,
"activate-default", NULL);
gtk_widget_class_set_css_name (widget_class, "popover");
}
/**
* gtk_popover_new:
*
* Creates a new popover.
*
* Returns: the new popover
*/
GtkWidget *
gtk_popover_new (void)
{
return g_object_new (GTK_TYPE_POPOVER, NULL);
}
/**
* gtk_popover_set_child:
* @popover: a #GtkPopover
* @child: (allow-none): the child widget
*
* Sets the child widget of @popover.
*/
void
gtk_popover_set_child (GtkPopover *popover,
GtkWidget *child)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
if (priv->child == child)
return;
g_clear_pointer (&priv->child, gtk_widget_unparent);
if (child)
{
priv->child = child;
gtk_widget_set_parent (child, priv->contents_widget);
}
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_CHILD]);
}
/**
* gtk_popover_get_child:
* @popover: a #GtkPopover
*
* Gets the child widget of @popover.
*
* Returns: (nullable) (transfer none): the child widget of @popover
*/
GtkWidget *
gtk_popover_get_child (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_val_if_fail (GTK_IS_POPOVER (popover), NULL);
return priv->child;
}
/**
* gtk_popover_set_default_widget:
* @popover: a #GtkPopover
* @widget: (allow-none): a child widget of @popover to set as
* the default, or %NULL to unset the default widget for the popover
*
* The default widget is the widget that’s activated when the user
* presses Enter in a dialog (for example). This function sets or
* unsets the default widget for a #GtkPopover.
*/
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_shortcut_manager_interface_init (GtkShortcutManagerInterface *iface)
{
}
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;
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_popover_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_WIDGET (child))
gtk_popover_set_child (GTK_POPOVER (buildable), GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_popover_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_popover_buildable_add_child;
}
/**
* 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 @popover parent.
**/
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;
priv->pointing_to.width = MAX (priv->pointing_to.width, 1);
priv->pointing_to.height = MAX (priv->pointing_to.height, 1);
}
else
priv->has_pointing_to = FALSE;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_POINTING_TO]);
if (gtk_widget_is_visible (GTK_WIDGET (popover)))
present_popup (popover);
}
/**
* 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
{
graphene_rect_t r;
GtkWidget *parent = gtk_widget_get_parent (GTK_WIDGET (popover));
if (!gtk_widget_compute_bounds (parent, parent, &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]);
if (gtk_widget_is_visible (GTK_WIDGET (popover)))
present_popup (popover);
}
/**
* 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));
}
static void
cascade_popdown (GtkPopover *popover)
{
GtkWidget *parent;
/* Do not trigger cascade close from non-modal popovers */
if (!gtk_popover_get_autohide (popover))
return;
parent = gtk_widget_get_parent (GTK_WIDGET (popover));
while (parent)
{
if (GTK_IS_POPOVER (parent))
{
if (gtk_popover_get_cascade_popdown (GTK_POPOVER (parent)))
gtk_widget_hide (parent);
else
break;
}
parent = gtk_widget_get_parent (parent);
}
}
/**
* 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));
cascade_popdown (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;
}
/**
* gtk_popover_set_mnemonics_visible:
* @popover: a #GtkPopover
* @mnemonics_visible: the new value
*
* Sets the #GtkPopover:mnemonics-visible property.
*/
void
gtk_popover_set_mnemonics_visible (GtkPopover *popover,
gboolean mnemonics_visible)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_if_fail (GTK_IS_POPOVER (popover));
if (priv->mnemonics_visible == mnemonics_visible)
return;
priv->mnemonics_visible = mnemonics_visible;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_MNEMONICS_VISIBLE]);
gtk_widget_queue_resize (GTK_WIDGET (popover));
if (priv->mnemonics_display_timeout_id)
{
g_source_remove (priv->mnemonics_display_timeout_id);
priv->mnemonics_display_timeout_id = 0;
}
}
/**
* gtk_popover_get_mnemonics_visible:
* @popover: a #GtkPopover
*
* Gets the value of the #GtkPopover:mnemonics-visible property.
*
* Returns: %TRUE if mnemonics are supposed to be visible in this popover
*/
gboolean
gtk_popover_get_mnemonics_visible (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE);
return priv->mnemonics_visible;
}
void
gtk_popover_disable_auto_mnemonics (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
priv->disable_auto_mnemonics = TRUE;
}
/**
* gtk_popover_set_offset:
* @popover: a #GtkPopover
* @x_offset: the x offset to adjust the position by
* @y_offset: the y offset to adjust the position by
*
* Sets the offset to use when calculating the position of the popover.
*
* These values are used when preparing the #GtkPopupLayout for positioning
* the popover.
*/
void
gtk_popover_set_offset (GtkPopover *popover,
int x_offset,
int y_offset)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_if_fail (GTK_IS_POPOVER (popover));
if (priv->x_offset != x_offset || priv->y_offset != y_offset)
{
priv->x_offset = x_offset;
priv->y_offset = y_offset;
gtk_widget_queue_resize (GTK_WIDGET (popover));
}
}
/**
* gtk_popover_get_offset:
* @popover: a #GtkPopover
* @x_offset: (out) (nullable): a location for the x_offset
* @y_offset: (out) (nullable): a location for the y_offset
*
* Gets the offset previous set with gtk_popover_set_offset().
*/
void
gtk_popover_get_offset (GtkPopover *popover,
int *x_offset,
int *y_offset)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
g_return_if_fail (GTK_IS_POPOVER (popover));
if (x_offset)
*x_offset = priv->x_offset;
if (y_offset)
*y_offset = priv->y_offset;
}
/**
* gtk_popover_set_cascade_popdown:
* @popover: A #GtkPopover
* @cascade_popdown: #TRUE if the popover should follow a child closing
*
* If @cascade_popdown is #TRUE, the popover will be closed when a child
* modal popover is closed. If #FALSE, @popover will stay visible.
**/
void
gtk_popover_set_cascade_popdown (GtkPopover *popover,
gboolean cascade_popdown)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (priv->cascade_popdown != !!cascade_popdown)
{
priv->cascade_popdown = !!cascade_popdown;
g_object_notify (G_OBJECT (popover), "cascade-popdown");
}
}
/**
* gtk_popover_get_cascade_popdown:
* @popover: a #GtkPopover
*
* Returns whether the popover will close after a modal child is closed.
*
* Returns: #TRUE if @popover will close after a modal child.
**/
gboolean
gtk_popover_get_cascade_popdown (GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
return priv->cascade_popdown;
}
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