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gtk2/gtk/gtkpopover.c
Carlos Garnacho ed227f9e7b GtkPopover: Honor widget margins when calculating tail position 
If there are widget margins set, the whole popover will be displaced.
However the calculation of the tail position doesn't have this into
account, ending up with the tail being detached from the popover if
the margin grew too big.

We should not render the arrows invariably next to the GdkWindow edge,
but optionally displaced inside it depending on the widget margins.
Fixes the gtk3-demo "Popovers" demo case, whose GtkEntry popovers set
widget margins for some reason.

https://bugzilla.gnome.org/show_bug.cgi?id=767851
2016-06-21 17:54:42 +02:00

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/* GTK - The GIMP Toolkit
* Copyright © 2013 Carlos Garnacho <carlosg@gnome.org>
*
* 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 GTK+ 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 Esc key being pressed). If no such modal behavior
* is desired on a popover, gtk_popover_set_modal() may be called on it
* to tweak its behavior.
*
* ## GtkPopover as menu replacement
*
* GtkPopover is often used to replace menus. To facilitate this, it
* supports being populated from a #GMenuModel, using
* gtk_popover_new_from_model(). In addition to all the regular menu
* model features, this function supports rendering sections in the
* model in a more compact form, as a row of icon buttons instead of
* menu items.
*
* To use this rendering, set the ”display-hint” attribute of the
* section to ”horizontal-buttons” and set the icons of your items
* with the ”verb-icon” attribute.
*
* |[
* <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
*
* GtkPopover has a single css node called popover. It always gets the
* .background style class and it gets the .menu style class if it is
* menu-like (e.g. #GtkPopoverMenu or created using gtk_popover_new_from_model().
*
* 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.
*
* Since: 3.12
*/
#include "config.h"
#include <gdk/gdk.h>
#include "gtkpopover.h"
#include "gtkpopoverprivate.h"
#include "gtktypebuiltins.h"
#include "gtkmain.h"
#include "gtkwindowprivate.h"
#include "gtkscrollable.h"
#include "gtkadjustment.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtklabel.h"
#include "gtkbox.h"
#include "gtkbutton.h"
#include "gtkseparator.h"
#include "gtkmodelbutton.h"
#include "gtkwidgetprivate.h"
#include "gtkactionmuxer.h"
#include "gtkmenutracker.h"
#include "gtkstack.h"
#include "gtksizegroup.h"
#include "a11y/gtkpopoveraccessible.h"
#include "gtkmenusectionbox.h"
#include "gtkroundedboxprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkprogresstrackerprivate.h"
#include "gtksettingsprivate.h"
#ifdef GDK_WINDOWING_WAYLAND
#include "wayland/gdkwayland.h"
#endif
#define TAIL_GAP_WIDTH 24
#define TAIL_HEIGHT 12
#define TRANSITION_DIFF 20
#define TRANSITION_DURATION 150 * 1000
#define POS_IS_VERTICAL(p) ((p) == GTK_POS_TOP || (p) == GTK_POS_BOTTOM)
enum {
PROP_RELATIVE_TO = 1,
PROP_POINTING_TO,
PROP_POSITION,
PROP_MODAL,
PROP_TRANSITIONS_ENABLED,
PROP_CONSTRAIN_TO,
NUM_PROPERTIES
};
enum {
CLOSED,
N_SIGNALS
};
enum {
STATE_SHOWING,
STATE_SHOWN,
STATE_HIDING,
STATE_HIDDEN
};
struct _GtkPopoverPrivate
{
GtkWidget *widget;
GtkWindow *window;
GtkWidget *prev_focus_widget;
GtkWidget *default_widget;
GtkWidget *prev_default;
GtkScrollable *parent_scrollable;
GtkAdjustment *vadj;
GtkAdjustment *hadj;
GdkRectangle pointing_to;
GtkPopoverConstraint constraint;
GtkProgressTracker tracker;
guint prev_focus_unmap_id;
guint hierarchy_changed_id;
guint size_allocate_id;
guint unmap_id;
guint scrollable_notify_id;
guint grab_notify_id;
guint state_changed_id;
guint has_pointing_to : 1;
guint preferred_position : 2;
guint final_position : 2;
guint current_position : 2;
guint modal : 1;
guint button_pressed : 1;
guint grab_notify_blocked : 1;
guint transitions_enabled : 1;
guint state : 2;
guint visible : 1;
gint transition_diff;
guint tick_id;
gint tip_x;
gint tip_y;
};
static GParamSpec *properties[NUM_PROPERTIES];
static GQuark quark_widget_popovers = 0;
static guint signals[N_SIGNALS] = { 0 };
static void gtk_popover_update_relative_to (GtkPopover *popover,
GtkWidget *relative_to);
static void gtk_popover_set_state (GtkPopover *popover,
guint state);
static void gtk_popover_invalidate_borders (GtkPopover *popover);
static void gtk_popover_apply_modality (GtkPopover *popover,
gboolean modal);
G_DEFINE_TYPE_WITH_PRIVATE (GtkPopover, gtk_popover, GTK_TYPE_BIN)
static void
gtk_popover_init (GtkPopover *popover)
{
GtkWidget *widget;
GtkStyleContext *context;
widget = GTK_WIDGET (popover);
gtk_widget_set_has_window (widget, TRUE);
popover->priv = gtk_popover_get_instance_private (popover);
popover->priv->modal = TRUE;
popover->priv->tick_id = 0;
popover->priv->transitions_enabled = TRUE;
popover->priv->preferred_position = GTK_POS_TOP;
popover->priv->constraint = GTK_POPOVER_CONSTRAINT_WINDOW;
context = gtk_widget_get_style_context (GTK_WIDGET (popover));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BACKGROUND);
}
static void
gtk_popover_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_RELATIVE_TO:
gtk_popover_set_relative_to (GTK_POPOVER (object),
g_value_get_object (value));
break;
case PROP_POINTING_TO:
gtk_popover_set_pointing_to (GTK_POPOVER (object),
g_value_get_boxed (value));
break;
case PROP_POSITION:
gtk_popover_set_position (GTK_POPOVER (object),
g_value_get_enum (value));
break;
case PROP_MODAL:
gtk_popover_set_modal (GTK_POPOVER (object),
g_value_get_boolean (value));
break;
case PROP_TRANSITIONS_ENABLED:
gtk_popover_set_transitions_enabled (GTK_POPOVER (object),
g_value_get_boolean (value));
break;
case PROP_CONSTRAIN_TO:
gtk_popover_set_constrain_to (GTK_POPOVER (object),
g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_popover_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkPopoverPrivate *priv = GTK_POPOVER (object)->priv;
switch (prop_id)
{
case PROP_RELATIVE_TO:
g_value_set_object (value, priv->widget);
break;
case PROP_POINTING_TO:
g_value_set_boxed (value, &priv->pointing_to);
break;
case PROP_POSITION:
g_value_set_enum (value, priv->preferred_position);
break;
case PROP_MODAL:
g_value_set_boolean (value, priv->modal);
break;
case PROP_TRANSITIONS_ENABLED:
g_value_set_boolean (value, priv->transitions_enabled);
break;
case PROP_CONSTRAIN_TO:
g_value_set_enum (value, priv->constraint);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static gboolean
transitions_enabled (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
return gtk_settings_get_enable_animations (gtk_widget_get_settings (GTK_WIDGET (popover))) &&
priv->transitions_enabled;
}
static void
gtk_popover_finalize (GObject *object)
{
GtkPopover *popover = GTK_POPOVER (object);
GtkPopoverPrivate *priv = popover->priv;
if (priv->widget)
gtk_popover_update_relative_to (popover, NULL);
G_OBJECT_CLASS (gtk_popover_parent_class)->finalize (object);
}
static void
popover_unset_prev_focus (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
if (!priv->prev_focus_widget)
return;
if (priv->prev_focus_unmap_id)
{
g_signal_handler_disconnect (priv->prev_focus_widget,
priv->prev_focus_unmap_id);
priv->prev_focus_unmap_id = 0;
}
g_clear_object (&priv->prev_focus_widget);
}
static void
gtk_popover_dispose (GObject *object)
{
GtkPopover *popover = GTK_POPOVER (object);
GtkPopoverPrivate *priv = popover->priv;
if (priv->modal)
gtk_popover_apply_modality (popover, FALSE);
if (priv->window)
{
g_signal_handlers_disconnect_by_data (priv->window, popover);
_gtk_window_remove_popover (priv->window, GTK_WIDGET (object));
}
priv->window = NULL;
if (priv->widget)
gtk_popover_update_relative_to (popover, NULL);
popover_unset_prev_focus (popover);
g_clear_object (&priv->default_widget);
G_OBJECT_CLASS (gtk_popover_parent_class)->dispose (object);
}
static void
gtk_popover_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GdkWindowAttr attributes;
gint attributes_mask;
GdkWindow *window;
gtk_widget_get_allocation (widget, &allocation);
attributes.x = 0;
attributes.y = 0;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.visual = gtk_widget_get_visual (widget);
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.event_mask =
gtk_widget_get_events (widget) |
GDK_POINTER_MOTION_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_set_window (widget, window);
gtk_widget_register_window (widget, window);
gtk_widget_set_realized (widget, TRUE);
}
static gboolean
window_focus_in (GtkWidget *widget,
GdkEvent *event,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
/* Regain the grab when the window is focused */
if (priv->modal &&
gtk_widget_is_drawable (GTK_WIDGET (popover)))
{
GtkWidget *focus;
gtk_grab_add (GTK_WIDGET (popover));
focus = gtk_window_get_focus (GTK_WINDOW (widget));
if (focus == NULL || !gtk_widget_is_ancestor (focus, GTK_WIDGET (popover)))
gtk_widget_grab_focus (GTK_WIDGET (popover));
if (priv->grab_notify_blocked)
g_signal_handler_unblock (priv->widget, priv->grab_notify_id);
priv->grab_notify_blocked = FALSE;
}
return FALSE;
}
static gboolean
window_focus_out (GtkWidget *widget,
GdkEvent *event,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
/* Temporarily remove the grab when unfocused */
if (priv->modal &&
gtk_widget_is_drawable (GTK_WIDGET (popover)))
{
g_signal_handler_block (priv->widget, priv->grab_notify_id);
gtk_grab_remove (GTK_WIDGET (popover));
priv->grab_notify_blocked = TRUE;
}
return FALSE;
}
static void
window_set_focus (GtkWindow *window,
GtkWidget *widget,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
if (!priv->modal || !widget || !gtk_widget_is_drawable (GTK_WIDGET (popover)))
return;
widget = gtk_widget_get_ancestor (widget, GTK_TYPE_POPOVER);
while (widget != NULL)
{
if (widget == GTK_WIDGET (popover))
return;
widget = gtk_popover_get_relative_to (GTK_POPOVER (widget));
if (widget == NULL)
break;
widget = gtk_widget_get_ancestor (widget, GTK_TYPE_POPOVER);
}
popover_unset_prev_focus (popover);
gtk_widget_hide (GTK_WIDGET (popover));
}
static void
prev_focus_unmap_cb (GtkWidget *widget,
GtkPopover *popover)
{
popover_unset_prev_focus (popover);
}
static void
gtk_popover_apply_modality (GtkPopover *popover,
gboolean modal)
{
GtkPopoverPrivate *priv = popover->priv;
if (!priv->window)
return;
if (modal)
{
GtkWidget *prev_focus;
prev_focus = gtk_window_get_focus (priv->window);
priv->prev_focus_widget = prev_focus;
if (priv->prev_focus_widget)
{
priv->prev_focus_unmap_id =
g_signal_connect (prev_focus, "unmap",
G_CALLBACK (prev_focus_unmap_cb), popover);
g_object_ref (prev_focus);
}
gtk_grab_add (GTK_WIDGET (popover));
gtk_window_set_focus (priv->window, NULL);
gtk_widget_grab_focus (GTK_WIDGET (popover));
g_signal_connect (priv->window, "focus-in-event",
G_CALLBACK (window_focus_in), popover);
g_signal_connect (priv->window, "focus-out-event",
G_CALLBACK (window_focus_out), popover);
g_signal_connect (priv->window, "set-focus",
G_CALLBACK (window_set_focus), popover);
}
else
{
g_signal_handlers_disconnect_by_data (priv->window, popover);
gtk_grab_remove (GTK_WIDGET (popover));
/* Let prev_focus_widget regain focus */
if (priv->prev_focus_widget &&
gtk_widget_is_drawable (priv->prev_focus_widget))
gtk_widget_grab_focus (priv->prev_focus_widget);
else if (priv->window)
gtk_widget_grab_focus (GTK_WIDGET (priv->window));
popover_unset_prev_focus (popover);
}
}
static gboolean
show_animate_cb (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer user_data)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = gtk_popover_get_instance_private (popover);
gdouble t;
gtk_progress_tracker_advance_frame (&priv->tracker,
gdk_frame_clock_get_frame_time (frame_clock));
t = gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
if (priv->state == STATE_SHOWING)
{
priv->transition_diff = TRANSITION_DIFF - (TRANSITION_DIFF * t);
gtk_widget_set_opacity (widget, t);
}
else if (priv->state == STATE_HIDING)
{
priv->transition_diff = -TRANSITION_DIFF * t;
gtk_widget_set_opacity (widget, 1.0 - t);
}
gtk_popover_update_position (popover);
if (gtk_progress_tracker_get_state (&priv->tracker) == GTK_PROGRESS_STATE_AFTER)
{
if (priv->state == STATE_SHOWING)
{
gtk_popover_set_state (popover, STATE_SHOWN);
if (!priv->visible)
gtk_popover_set_state (popover, STATE_HIDING);
}
else
gtk_popover_set_state (popover, STATE_HIDDEN);
return FALSE;
}
else
return TRUE;
}
static void
gtk_popover_start_transition (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
if (priv->tick_id != 0)
return;
gtk_progress_tracker_start (&priv->tracker, TRANSITION_DURATION, 0, 1.0);
priv->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (popover),
show_animate_cb,
popover, NULL);
}
static void
gtk_popover_set_state (GtkPopover *popover,
guint state)
{
GtkPopoverPrivate *priv = popover->priv;
if (!transitions_enabled (popover) ||
!gtk_widget_get_realized (GTK_WIDGET (popover)))
{
if (state == STATE_SHOWING)
state = STATE_SHOWN;
else if (state == STATE_HIDING)
state = STATE_HIDDEN;
}
priv->state = state;
if (state == STATE_SHOWING || state == STATE_HIDING)
gtk_popover_start_transition (popover);
else
{
if (priv->tick_id)
{
gtk_widget_remove_tick_callback (GTK_WIDGET (popover), priv->tick_id);
priv->tick_id = 0;
}
gtk_widget_set_visible (GTK_WIDGET (popover), state == STATE_SHOWN);
}
}
static void
gtk_popover_map (GtkWidget *widget)
{
GtkPopoverPrivate *priv = GTK_POPOVER (widget)->priv;
priv->prev_default = gtk_window_get_default_widget (priv->window);
if (priv->prev_default)
g_object_ref (priv->prev_default);
GTK_WIDGET_CLASS (gtk_popover_parent_class)->map (widget);
gdk_window_show (gtk_widget_get_window (widget));
gtk_popover_update_position (GTK_POPOVER (widget));
gtk_window_set_default (priv->window, priv->default_widget);
}
static void
gtk_popover_unmap (GtkWidget *widget)
{
GtkPopoverPrivate *priv = GTK_POPOVER (widget)->priv;
priv->button_pressed = FALSE;
gdk_window_hide (gtk_widget_get_window (widget));
GTK_WIDGET_CLASS (gtk_popover_parent_class)->unmap (widget);
if (gtk_window_get_default_widget (priv->window) == priv->default_widget)
gtk_window_set_default (priv->window, priv->prev_default);
g_clear_object (&priv->prev_default);
}
static GtkPositionType
get_effective_position (GtkPopover *popover,
GtkPositionType pos)
{
if (gtk_widget_get_direction (GTK_WIDGET (popover)) == GTK_TEXT_DIR_RTL)
{
if (pos == GTK_POS_LEFT)
pos = GTK_POS_RIGHT;
else if (pos == GTK_POS_RIGHT)
pos = GTK_POS_LEFT;
}
return pos;
}
static void
get_margin (GtkWidget *widget,
GtkBorder *border)
{
GtkStyleContext *context;
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_margin (context,
gtk_style_context_get_state (context),
border);
}
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,
GtkPositionType *gap_side_out)
{
GtkWidget *widget = GTK_WIDGET (popover);
GtkPopoverPrivate *priv = popover->priv;
GdkRectangle rect;
gint base, tip, tip_pos;
gint initial_x, initial_y;
gint tip_x, tip_y;
gint final_x, final_y;
GtkPositionType gap_side, pos;
GtkAllocation allocation;
gint border_radius;
GtkStyleContext *context;
GtkBorder margin, border, widget_margin;
GtkStateFlags state;
gtk_popover_get_pointing_to (popover, &rect);
gtk_widget_get_allocation (widget, &allocation);
#ifdef GDK_WINDOWING_WAYLAND
if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
{
gint win_x, win_y;
gtk_widget_translate_coordinates (priv->widget, GTK_WIDGET (priv->window),
rect.x, rect.y, &rect.x, &rect.y);
gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (popover)),
&win_x, &win_y);
rect.x -= win_x;
rect.y -= win_y;
}
else
#endif
gtk_widget_translate_coordinates (priv->widget, widget,
rect.x, rect.y, &rect.x, &rect.y);
get_margin (widget, &margin);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
{
widget_margin.left = gtk_widget_get_margin_start (widget);
widget_margin.right = gtk_widget_get_margin_end (widget);
}
else
{
widget_margin.left = gtk_widget_get_margin_end (widget);
widget_margin.right = gtk_widget_get_margin_start (widget);
}
widget_margin.top = gtk_widget_get_margin_top (widget);
widget_margin.bottom = gtk_widget_get_margin_bottom (widget);
context = gtk_widget_get_style_context (widget);
state = gtk_style_context_get_state (context);
gtk_style_context_get_border (context, state, &border);
gtk_style_context_get (context,
state,
GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius,
NULL);
pos = get_effective_position (popover, priv->final_position);
if (pos == GTK_POS_BOTTOM || pos == GTK_POS_RIGHT)
{
tip = ((pos == GTK_POS_BOTTOM) ? border.top + widget_margin.top : border.left + widget_margin.left);
base = tip + TAIL_HEIGHT;
gap_side = (priv->final_position == GTK_POS_BOTTOM) ? GTK_POS_TOP : GTK_POS_LEFT;
}
else if (pos == GTK_POS_TOP)
{
base = allocation.height - TAIL_HEIGHT - border.bottom - widget_margin.bottom;
tip = base + TAIL_HEIGHT;
gap_side = GTK_POS_BOTTOM;
}
else if (pos == GTK_POS_LEFT)
{
base = allocation.width - TAIL_HEIGHT - border.right - widget_margin.right;
tip = base + TAIL_HEIGHT;
gap_side = GTK_POS_RIGHT;
}
else
g_assert_not_reached ();
if (POS_IS_VERTICAL (pos))
{
tip_pos = rect.x + (rect.width / 2) + widget_margin.left;
initial_x = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2,
border_radius + margin.left + TAIL_HEIGHT,
allocation.width - TAIL_GAP_WIDTH - margin.right - border_radius - TAIL_HEIGHT);
initial_y = base;
tip_x = CLAMP (tip_pos, 0, allocation.width);
tip_y = tip;
final_x = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2,
border_radius + margin.left + TAIL_GAP_WIDTH + TAIL_HEIGHT,
allocation.width - margin.right - border_radius - TAIL_HEIGHT);
final_y = base;
}
else
{
tip_pos = rect.y + (rect.height / 2) + widget_margin.top;
initial_x = base;
initial_y = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2,
border_radius + margin.top + TAIL_HEIGHT,
allocation.height - TAIL_GAP_WIDTH - margin.bottom - border_radius - TAIL_HEIGHT);
tip_x = tip;
tip_y = CLAMP (tip_pos, 0, allocation.height);
final_x = base;
final_y = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2,
border_radius + margin.top + TAIL_GAP_WIDTH + TAIL_HEIGHT,
allocation.height - margin.right - border_radius - TAIL_HEIGHT);
}
if (initial_x_out)
*initial_x_out = initial_x;
if (initial_y_out)
*initial_y_out = initial_y;
if (tip_x_out)
*tip_x_out = tip_x;
if (tip_y_out)
*tip_y_out = tip_y;
if (final_x_out)
*final_x_out = final_x;
if (final_y_out)
*final_y_out = final_y;
if (gap_side_out)
*gap_side_out = gap_side;
}
static void
gtk_popover_get_rect_coords (GtkPopover *popover,
gint *x1_out,
gint *y1_out,
gint *x2_out,
gint *y2_out)
{
GtkWidget *widget = GTK_WIDGET (popover);
GtkAllocation allocation;
gint x1, x2, y1, y2;
GtkBorder margin;
gtk_widget_get_allocation (widget, &allocation);
get_margin (widget, &margin);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
x1 = gtk_widget_get_margin_start (widget);
else
x1 = gtk_widget_get_margin_end (widget);
y1 = gtk_widget_get_margin_top (widget);
x2 = allocation.width -
gtk_widget_get_margin_end (widget) + x1;
y2 = allocation.height -
gtk_widget_get_margin_bottom (widget) + y1;
x1 += MAX (TAIL_HEIGHT, margin.left);
y1 += MAX (TAIL_HEIGHT, margin.top);
x2 -= MAX (TAIL_HEIGHT, margin.right);
y2 -= MAX (TAIL_HEIGHT, margin.bottom);
if (x1_out)
*x1_out = x1;
if (y1_out)
*y1_out = y1;
if (x2_out)
*x2_out = x2;
if (y2_out)
*y2_out = y2;
}
static void
gtk_popover_apply_tail_path (GtkPopover *popover,
cairo_t *cr)
{
gint initial_x, initial_y;
gint tip_x, tip_y;
gint final_x, final_y;
if (!popover->priv->widget)
return;
cairo_set_line_width (cr, 1);
gtk_popover_get_gap_coords (popover,
&initial_x, &initial_y,
&tip_x, &tip_y,
&final_x, &final_y,
NULL);
cairo_move_to (cr, initial_x, initial_y);
cairo_line_to (cr, tip_x, tip_y);
cairo_line_to (cr, final_x, final_y);
}
static void
gtk_popover_fill_border_path (GtkPopover *popover,
cairo_t *cr)
{
GtkWidget *widget = GTK_WIDGET (popover);
GtkAllocation allocation;
GtkStyleContext *context;
gint x1, y1, x2, y2;
GtkRoundedBox box;
context = gtk_widget_get_style_context (widget);
gtk_widget_get_allocation (widget, &allocation);
cairo_set_source_rgba (cr, 0, 0, 0, 1);
gtk_popover_apply_tail_path (popover, cr);
cairo_close_path (cr);
cairo_fill (cr);
gtk_popover_get_rect_coords (popover, &x1, &y1, &x2, &y2);
_gtk_rounded_box_init_rect (&box, x1, y1, x2 - x1, y2 - y1);
_gtk_rounded_box_apply_border_radius_for_style (&box,
gtk_style_context_lookup_style (context),
0);
_gtk_rounded_box_path (&box, cr);
cairo_fill (cr);
}
static void
gtk_popover_update_shape (GtkPopover *popover)
{
GtkWidget *widget = GTK_WIDGET (popover);
cairo_surface_t *surface;
cairo_region_t *region;
GdkWindow *win;
cairo_t *cr;
#ifdef GDK_WINDOWING_WAYLAND
if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
return;
#endif
win = gtk_widget_get_window (widget);
surface =
gdk_window_create_similar_surface (win,
CAIRO_CONTENT_COLOR_ALPHA,
gdk_window_get_width (win),
gdk_window_get_height (win));
cr = cairo_create (surface);
gtk_popover_fill_border_path (popover, cr);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (surface);
cairo_surface_destroy (surface);
gtk_widget_shape_combine_region (widget, region);
cairo_region_destroy (region);
gdk_window_set_child_shapes (gtk_widget_get_parent_window (widget));
}
static void
_gtk_popover_update_child_visible (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
GtkWidget *widget = GTK_WIDGET (popover);
GdkRectangle rect;
GtkAllocation allocation;
GtkWidget *parent;
if (!priv->parent_scrollable)
{
gtk_widget_set_child_visible (widget, TRUE);
return;
}
parent = gtk_widget_get_parent (GTK_WIDGET (priv->parent_scrollable));
rect = priv->pointing_to;
gtk_widget_translate_coordinates (priv->widget, parent,
rect.x, rect.y, &rect.x, &rect.y);
gtk_widget_get_allocation (GTK_WIDGET (parent), &allocation);
if (rect.x + rect.width < 0 || rect.x > allocation.width ||
rect.y + rect.height < 0 || rect.y > allocation.height)
gtk_widget_set_child_visible (widget, FALSE);
else
gtk_widget_set_child_visible (widget, TRUE);
}
static GtkPositionType
opposite_position (GtkPositionType pos)
{
switch (pos)
{
default:
case GTK_POS_LEFT: return GTK_POS_RIGHT;
case GTK_POS_RIGHT: return GTK_POS_LEFT;
case GTK_POS_TOP: return GTK_POS_BOTTOM;
case GTK_POS_BOTTOM: return GTK_POS_TOP;
}
}
void
gtk_popover_update_position (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
GtkWidget *widget = GTK_WIDGET (popover);
GtkAllocation window_alloc;
GdkRectangle rect;
GtkRequisition req;
GtkPositionType pos;
gint overshoot[4];
gint i, j;
gint best;
if (!priv->window)
return;
gtk_widget_get_preferred_size (widget, NULL, &req);
gtk_widget_get_allocation (GTK_WIDGET (priv->window), &window_alloc);
priv->final_position = priv->preferred_position;
gtk_popover_get_pointing_to (popover, &rect);
gtk_widget_translate_coordinates (priv->widget, GTK_WIDGET (priv->window),
rect.x, rect.y, &rect.x, &rect.y);
pos = get_effective_position (popover, priv->preferred_position);
overshoot[GTK_POS_TOP] = req.height - rect.y;
overshoot[GTK_POS_BOTTOM] = rect.y + rect.height + req.height - window_alloc.height;
overshoot[GTK_POS_LEFT] = req.width - rect.x;
overshoot[GTK_POS_RIGHT] = rect.x + rect.width + req.width - window_alloc.width;
#ifdef GDK_WINDOWING_WAYLAND
if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)) &&
priv->constraint == GTK_POPOVER_CONSTRAINT_NONE)
{
priv->final_position = priv->preferred_position;
}
else
#endif
if (overshoot[pos] <= 0)
{
priv->final_position = priv->preferred_position;
}
else if (overshoot[opposite_position (pos)] <= 0)
{
priv->final_position = opposite_position (priv->preferred_position);
}
else
{
best = G_MAXINT;
pos = 0;
for (i = 0; i < 4; i++)
{
j = get_effective_position (popover, i);
if (overshoot[j] < best)
{
pos = i;
best = overshoot[j];
}
}
priv->final_position = pos;
}
switch (priv->final_position)
{
case GTK_POS_TOP:
rect.y += priv->transition_diff;
break;
case GTK_POS_BOTTOM:
rect.y -= priv->transition_diff;
break;
case GTK_POS_LEFT:
rect.x += priv->transition_diff;
break;
case GTK_POS_RIGHT:
rect.x -= priv->transition_diff;
break;
}
_gtk_window_set_popover_position (priv->window, widget,
priv->final_position, &rect);
if (priv->final_position != priv->current_position)
{
if (gtk_widget_is_drawable (widget))
gtk_popover_update_shape (popover);
priv->current_position = priv->final_position;
gtk_popover_invalidate_borders (popover);
}
_gtk_popover_update_child_visible (popover);
}
static gboolean
gtk_popover_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkStyleContext *context;
GtkAllocation allocation;
GtkWidget *child;
GtkBorder border;
GdkRGBA border_color;
gint rect_x1, rect_x2, rect_y1, rect_y2;
gint initial_x, initial_y, final_x, final_y;
gint gap_start, gap_end;
GtkPositionType gap_side;
GtkStateFlags state;
context = gtk_widget_get_style_context (widget);
state = gtk_style_context_get_state (context);
gtk_widget_get_allocation (widget, &allocation);
gtk_style_context_get_border (context, state, &border);
gtk_popover_get_rect_coords (popover,
&rect_x1, &rect_y1,
&rect_x2, &rect_y2);
/* Render the rect background */
gtk_render_background (context, cr,
rect_x1, rect_y1,
rect_x2 - rect_x1,
rect_y2 - rect_y1);
if (popover->priv->widget)
{
gtk_popover_get_gap_coords (popover,
&initial_x, &initial_y,
NULL, NULL,
&final_x, &final_y,
&gap_side);
if (POS_IS_VERTICAL (gap_side))
{
gap_start = initial_x - rect_x1;
gap_end = final_x - rect_x1;
}
else
{
gap_start = initial_y - rect_y1;
gap_end = final_y - rect_y1;
}
/* Now render the frame, without the gap for the arrow tip */
gtk_render_frame_gap (context, cr,
rect_x1, rect_y1,
rect_x2 - rect_x1, rect_y2 - rect_y1,
gap_side,
gap_start, gap_end);
}
else
{
gtk_render_frame (context, cr,
rect_x1, rect_y1,
rect_x2 - rect_x1, rect_y2 - rect_y1);
}
/* Clip to the arrow shape */
cairo_save (cr);
gtk_popover_apply_tail_path (popover, cr);
cairo_clip (cr);
/* Render the arrow background */
gtk_render_background (context, cr,
0, 0,
allocation.width, allocation.height);
/* Render the border of the arrow tip */
if (border.bottom > 0)
{
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gtk_style_context_get_border_color (context, state, &border_color);
G_GNUC_END_IGNORE_DEPRECATIONS
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);
}
/* We're done */
cairo_restore (cr);
child = gtk_bin_get_child (GTK_BIN (widget));
if (child)
gtk_container_propagate_draw (GTK_CONTAINER (widget), child, cr);
return TRUE;
}
static void
get_padding_and_border (GtkWidget *widget,
GtkBorder *border)
{
GtkStyleContext *context;
GtkStateFlags state;
gint border_width;
GtkBorder tmp;
context = gtk_widget_get_style_context (widget);
state = gtk_style_context_get_state (context);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
gtk_style_context_get_padding (context, state, border);
gtk_style_context_get_border (context, state, &tmp);
border->top += tmp.top + border_width;
border->right += tmp.right + border_width;
border->bottom += tmp.bottom + border_width;
border->left += tmp.left + border_width;
}
static gint
get_border_radius (GtkWidget *widget)
{
GtkStyleContext *context;
GtkStateFlags state;
gint border_radius;
context = gtk_widget_get_style_context (widget);
state = gtk_style_context_get_state (context);
gtk_style_context_get (context, state,
GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius,
NULL);
return border_radius;
}
static gint
get_minimal_size (GtkPopover *popover,
GtkOrientation orientation)
{
GtkPopoverPrivate *priv = popover->priv;
GtkPositionType pos;
gint minimal_size;
minimal_size = 2 * get_border_radius (GTK_WIDGET (popover));
pos = get_effective_position (popover, priv->preferred_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_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkWidget *child;
gint min, nat, extra, minimal_size;
GtkBorder border, margin;
child = gtk_bin_get_child (GTK_BIN (widget));
min = nat = 0;
if (child)
gtk_widget_get_preferred_width (child, &min, &nat);
get_padding_and_border (widget, &border);
get_margin (widget, &margin);
minimal_size = get_minimal_size (popover, GTK_ORIENTATION_HORIZONTAL);
min = MAX (min, minimal_size) + border.left + border.right;
nat = MAX (nat, minimal_size) + border.left + border.right;
extra = MAX (TAIL_HEIGHT, margin.left) + MAX (TAIL_HEIGHT, margin.right);
min += extra;
nat += extra;
*minimum_width = min;
*natural_width = nat;
}
static void
gtk_popover_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = popover->priv;
GtkWidget *child;
gint min, nat, extra, minimal_size;
gint child_height;
GtkBorder border, margin;
child = gtk_bin_get_child (GTK_BIN (widget));
min = nat = 0;
child_height = height;
if (POS_IS_VERTICAL (priv->preferred_position))
child_height -= TAIL_HEIGHT;
get_padding_and_border (widget, &border);
get_margin (widget, &margin);
child_height -= border.top + border.bottom;
minimal_size = get_minimal_size (popover, GTK_ORIENTATION_HORIZONTAL);
if (child)
gtk_widget_get_preferred_width_for_height (child, child_height, &min, &nat);
min = MAX (min, minimal_size) + border.left + border.right;
nat = MAX (nat, minimal_size) + border.left + border.right;
extra = MAX (TAIL_HEIGHT, margin.left) + MAX (TAIL_HEIGHT, margin.right);
min += extra;
nat += extra;
*minimum_width = min;
*natural_width = nat;
}
static void
gtk_popover_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkWidget *child;
gint min, nat, extra, minimal_size;
GtkBorder border, margin;
child = gtk_bin_get_child (GTK_BIN (widget));
min = nat = 0;
if (child)
gtk_widget_get_preferred_height (child, &min, &nat);
get_padding_and_border (widget, &border);
get_margin (widget, &margin);
minimal_size = get_minimal_size (popover, GTK_ORIENTATION_VERTICAL);
min = MAX (min, minimal_size) + border.top + border.bottom;
nat = MAX (nat, minimal_size) + border.top + border.bottom;
extra = MAX (TAIL_HEIGHT, margin.top) + MAX (TAIL_HEIGHT, margin.bottom);
min += extra;
nat += extra;
*minimum_height = min;
*natural_height = nat;
}
static void
gtk_popover_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = popover->priv;
GtkWidget *child;
gint min, nat, extra, minimal_size;
gint child_width;
GtkBorder border, margin;
child = gtk_bin_get_child (GTK_BIN (widget));
min = nat = 0;
child_width = width;
if (!POS_IS_VERTICAL (priv->preferred_position))
child_width -= TAIL_HEIGHT;
get_padding_and_border (widget, &border);
get_margin (widget, &margin);
child_width -= border.left + border.right;
minimal_size = get_minimal_size (popover, GTK_ORIENTATION_VERTICAL);
if (child)
gtk_widget_get_preferred_height_for_width (child, child_width, &min, &nat);
min = MAX (min, minimal_size) + border.top + border.bottom;
nat = MAX (nat, minimal_size) + border.top + border.bottom;
extra = MAX (TAIL_HEIGHT, margin.top) + MAX (TAIL_HEIGHT, margin.bottom);
min += extra;
nat += extra;
if (minimum_height)
*minimum_height = min;
if (natural_height)
*natural_height = nat;
}
static void
gtk_popover_invalidate_borders (GtkPopover *popover)
{
GtkAllocation allocation;
GtkBorder border;
gtk_widget_get_allocation (GTK_WIDGET (popover), &allocation);
get_padding_and_border (GTK_WIDGET (popover), &border);
gtk_widget_queue_draw_area (GTK_WIDGET (popover), 0, 0, border.left + TAIL_HEIGHT, allocation.height);
gtk_widget_queue_draw_area (GTK_WIDGET (popover), 0, 0, allocation.width, border.top + TAIL_HEIGHT);
gtk_widget_queue_draw_area (GTK_WIDGET (popover), 0, allocation.height - border.bottom - TAIL_HEIGHT,
allocation.width, border.bottom + TAIL_HEIGHT);
gtk_widget_queue_draw_area (GTK_WIDGET (popover), allocation.width - border.right - TAIL_HEIGHT,
0, border.right + TAIL_HEIGHT, allocation.height);
}
static void
gtk_popover_check_invalidate_borders (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
GtkPositionType gap_side;
gint tip_x, tip_y;
if (!priv->widget)
return;
gtk_popover_get_gap_coords (popover, NULL, NULL,
&tip_x, &tip_y, NULL, NULL,
&gap_side);
if (tip_x != priv->tip_x || tip_y != priv->tip_y)
{
priv->tip_x = tip_x;
priv->tip_y = tip_y;
gtk_popover_invalidate_borders (popover);
}
}
static void
gtk_popover_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkWidget *child;
gtk_widget_set_allocation (widget, allocation);
child = gtk_bin_get_child (GTK_BIN (widget));
if (child)
{
GtkAllocation child_alloc;
gint x1, y1, x2, y2;
GtkBorder border;
gtk_popover_get_rect_coords (popover, &x1, &y1, &x2, &y2);
get_padding_and_border (widget, &border);
child_alloc.x = x1 + border.left;
child_alloc.y = y1 + border.top;
child_alloc.width = (x2 - x1) - border.left - border.right;
child_alloc.height = (y2 - y1) - border.top - border.bottom;
gtk_widget_size_allocate (child, &child_alloc);
}
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (gtk_widget_get_window (widget),
0, 0, allocation->width, allocation->height);
gtk_popover_update_shape (popover);
}
if (gtk_widget_is_drawable (widget))
gtk_popover_check_invalidate_borders (popover);
}
static gboolean
gtk_popover_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkPopover *popover = GTK_POPOVER (widget);
if (event->type != GDK_BUTTON_PRESS)
return GDK_EVENT_PROPAGATE;
popover->priv->button_pressed = TRUE;
return GDK_EVENT_PROPAGATE;
}
static gboolean
gtk_popover_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkWidget *child, *event_widget;
child = gtk_bin_get_child (GTK_BIN (widget));
if (!popover->priv->button_pressed)
return GDK_EVENT_PROPAGATE;
event_widget = gtk_get_event_widget ((GdkEvent *) event);
if (child && event->window == gtk_widget_get_window (widget))
{
GtkAllocation child_alloc;
gtk_widget_get_allocation (child, &child_alloc);
if (event->x < child_alloc.x ||
event->x > child_alloc.x + child_alloc.width ||
event->y < child_alloc.y ||
event->y > child_alloc.y + child_alloc.height)
gtk_widget_hide (widget);
}
else if (!gtk_widget_is_ancestor (event_widget, widget))
gtk_widget_hide (widget);
return GDK_EVENT_PROPAGATE;
}
static gboolean
gtk_popover_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkWidget *toplevel, *focus;
if (event->keyval == GDK_KEY_Escape)
{
gtk_widget_hide (widget);
return GDK_EVENT_STOP;
}
if (!GTK_POPOVER (widget)->priv->modal)
return GDK_EVENT_PROPAGATE;
toplevel = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (toplevel))
{
focus = gtk_window_get_focus (GTK_WINDOW (toplevel));
if (focus && gtk_widget_is_ancestor (focus, widget))
return gtk_widget_event (focus, (GdkEvent*) event);
}
return GDK_EVENT_PROPAGATE;
}
static void
gtk_popover_grab_focus (GtkWidget *widget)
{
GtkPopoverPrivate *priv = GTK_POPOVER (widget)->priv;
GtkWidget *child;
if (!priv->visible)
return;
/* Focus the first natural child */
child = gtk_bin_get_child (GTK_BIN (widget));
if (child)
gtk_widget_child_focus (child, GTK_DIR_TAB_FORWARD);
}
static gboolean
gtk_popover_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkPopover *popover = GTK_POPOVER (widget);
GtkPopoverPrivate *priv = popover->priv;
if (!priv->visible)
return FALSE;
if (!GTK_WIDGET_CLASS (gtk_popover_parent_class)->focus (widget, direction))
{
GtkWidget *focus;
focus = gtk_window_get_focus (popover->priv->window);
focus = gtk_widget_get_parent (focus);
/* Unset focus child through children, so it is next stepped from
* scratch.
*/
while (focus && focus != widget)
{
gtk_container_set_focus_child (GTK_CONTAINER (focus), NULL);
focus = gtk_widget_get_parent (focus);
}
return gtk_widget_child_focus (gtk_bin_get_child (GTK_BIN (widget)),
direction);
}
return TRUE;
}
static void
gtk_popover_show (GtkWidget *widget)
{
GtkPopoverPrivate *priv = GTK_POPOVER (widget)->priv;
if (priv->window)
_gtk_window_raise_popover (priv->window, widget);
priv->visible = TRUE;
GTK_WIDGET_CLASS (gtk_popover_parent_class)->show (widget);
if (priv->modal)
gtk_popover_apply_modality (GTK_POPOVER (widget), TRUE);
gtk_popover_set_state (GTK_POPOVER (widget), STATE_SHOWING);
if (gtk_widget_get_realized (widget))
gdk_window_input_shape_combine_region (gtk_widget_get_parent_window (widget),
NULL, 0, 0);
}
static void
gtk_popover_hide (GtkWidget *widget)
{
GtkPopoverPrivate *priv = GTK_POPOVER (widget)->priv;
cairo_region_t *region;
if (priv->visible)
{
priv->visible = FALSE;
g_signal_emit (widget, signals[CLOSED], 0);
if (priv->modal)
gtk_popover_apply_modality (GTK_POPOVER (widget), FALSE);
}
if (gtk_widget_get_realized (widget))
{
region = cairo_region_create ();
gdk_window_input_shape_combine_region (gtk_widget_get_parent_window (widget),
region, 0, 0);
cairo_region_destroy (region);
}
if (!priv->window || priv->state == STATE_HIDDEN)
GTK_WIDGET_CLASS (gtk_popover_parent_class)->hide (widget);
else if (priv->state != STATE_SHOWING)
gtk_popover_set_state (GTK_POPOVER (widget), STATE_HIDING);
}
static void
gtk_popover_class_init (GtkPopoverClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gtk_popover_set_property;
object_class->get_property = gtk_popover_get_property;
object_class->finalize = gtk_popover_finalize;
object_class->dispose = gtk_popover_dispose;
widget_class->realize = gtk_popover_realize;
widget_class->map = gtk_popover_map;
widget_class->unmap = gtk_popover_unmap;
widget_class->get_preferred_width = gtk_popover_get_preferred_width;
widget_class->get_preferred_height = gtk_popover_get_preferred_height;
widget_class->get_preferred_width_for_height = gtk_popover_get_preferred_width_for_height;
widget_class->get_preferred_height_for_width = gtk_popover_get_preferred_height_for_width;
widget_class->size_allocate = gtk_popover_size_allocate;
widget_class->draw = gtk_popover_draw;
widget_class->button_press_event = gtk_popover_button_press;
widget_class->button_release_event = gtk_popover_button_release;
widget_class->key_press_event = gtk_popover_key_press;
widget_class->grab_focus = gtk_popover_grab_focus;
widget_class->focus = gtk_popover_focus;
widget_class->show = gtk_popover_show;
widget_class->hide = gtk_popover_hide;
/**
* GtkPopover:relative-to:
*
* Sets the attached widget.
*
* Since: 3.12
*/
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);
/**
* GtkPopover:pointing-to:
*
* Marks a specific rectangle to be pointed.
*
* Since: 3.12
*/
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);
/**
* GtkPopover:position
*
* Sets the preferred position of the popover.
*
* Since: 3.12
*/
properties[PROP_POSITION] =
g_param_spec_enum ("position",
P_("Position"),
P_("Position to place the bubble window"),
GTK_TYPE_POSITION_TYPE, GTK_POS_TOP,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkPopover:modal
*
* Sets whether the popover is modal (so other elements in the window do not
* receive input while the popover is visible).
*
* Since: 3.12
*/
properties[PROP_MODAL] =
g_param_spec_boolean ("modal",
P_("Modal"),
P_("Whether the popover is modal"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkPopover:transitions-enabled
*
* Whether show/hide transitions are enabled for this popover.
*
* Since: 3.16
*/
properties[PROP_TRANSITIONS_ENABLED] =
g_param_spec_boolean ("transitions-enabled",
P_("Transitions enabled"),
P_("Whether show/hide transitions are enabled or not"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkPopover:constrain-to:
*
* Sets a constraint for the popover position.
*
* Since: 3.20
*/
properties[PROP_CONSTRAIN_TO] =
g_param_spec_enum ("constrain-to",
P_("Constraint"),
P_("Constraint for the popover position"),
GTK_TYPE_POPOVER_CONSTRAINT, GTK_POPOVER_CONSTRAINT_WINDOW,
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);
quark_widget_popovers = g_quark_from_static_string ("gtk-quark-widget-popovers");
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_POPOVER_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, "popover");
}
static void
_gtk_popover_parent_hierarchy_changed (GtkWidget *widget,
GtkWidget *previous_toplevel,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
GtkWindow *new_window;
new_window = GTK_WINDOW (gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW));
if (priv->window == new_window)
return;
g_object_ref (popover);
if (gtk_widget_has_grab (GTK_WIDGET (popover)))
gtk_popover_apply_modality (popover, FALSE);
if (priv->window)
_gtk_window_remove_popover (priv->window, GTK_WIDGET (popover));
priv->window = new_window;
if (new_window)
{
_gtk_window_add_popover (new_window, GTK_WIDGET (popover), priv->widget, TRUE);
gtk_popover_update_position (popover);
}
if (gtk_widget_is_visible (GTK_WIDGET (popover)))
gtk_widget_queue_resize (GTK_WIDGET (popover));
g_object_unref (popover);
}
static void
_popover_propagate_state (GtkPopover *popover,
GtkStateFlags state,
GtkStateFlags old_state,
GtkStateFlags flag)
{
if ((state & flag) != (old_state & flag))
{
if ((state & flag) == flag)
gtk_widget_set_state_flags (GTK_WIDGET (popover), flag, FALSE);
else
gtk_widget_unset_state_flags (GTK_WIDGET (popover), flag);
}
}
static void
_gtk_popover_parent_state_changed (GtkWidget *widget,
GtkStateFlags old_state,
GtkPopover *popover)
{
guint state;
state = gtk_widget_get_state_flags (widget);
_popover_propagate_state (popover, state, old_state,
GTK_STATE_FLAG_INSENSITIVE);
_popover_propagate_state (popover, state, old_state,
GTK_STATE_FLAG_BACKDROP);
}
static void
_gtk_popover_parent_grab_notify (GtkWidget *widget,
gboolean was_shadowed,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
if (priv->modal &&
gtk_widget_is_visible (GTK_WIDGET (popover)) &&
!gtk_widget_has_grab (GTK_WIDGET (popover)))
{
GtkWidget *grab_widget;
grab_widget = gtk_grab_get_current ();
if (!grab_widget || !GTK_IS_POPOVER (grab_widget))
gtk_widget_hide (GTK_WIDGET (popover));
}
}
static void
_gtk_popover_parent_unmap (GtkWidget *widget,
GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
if (priv->state == STATE_SHOWING)
priv->visible = FALSE;
else if (priv->state == STATE_SHOWN)
gtk_popover_set_state (popover, STATE_HIDING);
}
static void
_gtk_popover_parent_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
GtkPopover *popover)
{
gtk_popover_update_position (popover);
}
static void
_unmanage_popover (GObject *object)
{
gtk_popover_update_relative_to (GTK_POPOVER (object), NULL);
g_object_unref (object);
}
static void
widget_manage_popover (GtkWidget *widget,
GtkPopover *popover)
{
GHashTable *popovers;
popovers = g_object_get_qdata (G_OBJECT (widget), quark_widget_popovers);
if (G_UNLIKELY (!popovers))
{
popovers = g_hash_table_new_full (NULL, NULL,
(GDestroyNotify) _unmanage_popover, NULL);
g_object_set_qdata_full (G_OBJECT (widget),
quark_widget_popovers, popovers,
(GDestroyNotify) g_hash_table_unref);
}
g_hash_table_add (popovers, g_object_ref_sink (popover));
}
static void
widget_unmanage_popover (GtkWidget *widget,
GtkPopover *popover)
{
GHashTable *popovers;
popovers = g_object_get_qdata (G_OBJECT (widget), quark_widget_popovers);
if (G_UNLIKELY (!popovers))
return;
g_hash_table_remove (popovers, popover);
}
static void
adjustment_changed_cb (GtkAdjustment *adjustment,
GtkPopover *popover)
{
gtk_popover_update_position (popover);
}
static void
_gtk_popover_set_scrollable (GtkPopover *popover,
GtkScrollable *scrollable)
{
GtkPopoverPrivate *priv = popover->priv;
if (priv->parent_scrollable)
{
if (priv->vadj)
{
g_signal_handlers_disconnect_by_data (priv->vadj, popover);
g_object_unref (priv->vadj);
priv->vadj = NULL;
}
if (priv->hadj)
{
g_signal_handlers_disconnect_by_data (priv->hadj, popover);
g_object_unref (priv->hadj);
priv->hadj = NULL;
}
g_object_unref (priv->parent_scrollable);
}
priv->parent_scrollable = scrollable;
if (scrollable)
{
g_object_ref (scrollable);
priv->vadj = gtk_scrollable_get_vadjustment (scrollable);
priv->hadj = gtk_scrollable_get_hadjustment (scrollable);
if (priv->vadj)
{
g_object_ref (priv->vadj);
g_signal_connect (priv->vadj, "changed",
G_CALLBACK (adjustment_changed_cb), popover);
g_signal_connect (priv->vadj, "value-changed",
G_CALLBACK (adjustment_changed_cb), popover);
}
if (priv->hadj)
{
g_object_ref (priv->hadj);
g_signal_connect (priv->hadj, "changed",
G_CALLBACK (adjustment_changed_cb), popover);
g_signal_connect (priv->hadj, "value-changed",
G_CALLBACK (adjustment_changed_cb), popover);
}
}
}
static void
scrollable_notify_cb (GObject *object,
GParamSpec *pspec,
GtkPopover *popover)
{
if (pspec->value_type == GTK_TYPE_ADJUSTMENT)
_gtk_popover_set_scrollable (popover, GTK_SCROLLABLE (object));
}
static void
gtk_popover_update_relative_to (GtkPopover *popover,
GtkWidget *relative_to)
{
GtkPopoverPrivate *priv = popover->priv;
GtkScrollable *scrollable = NULL;
if (priv->widget == relative_to)
return;
g_object_ref (popover);
if (priv->window)
{
_gtk_window_remove_popover (priv->window, GTK_WIDGET (popover));
priv->window = NULL;
}
popover_unset_prev_focus (popover);
if (priv->widget)
{
if (g_signal_handler_is_connected (priv->widget, priv->hierarchy_changed_id))
g_signal_handler_disconnect (priv->widget, priv->hierarchy_changed_id);
if (g_signal_handler_is_connected (priv->widget, priv->size_allocate_id))
g_signal_handler_disconnect (priv->widget, priv->size_allocate_id);
if (g_signal_handler_is_connected (priv->widget, priv->unmap_id))
g_signal_handler_disconnect (priv->widget, priv->unmap_id);
if (g_signal_handler_is_connected (priv->widget, priv->state_changed_id))
g_signal_handler_disconnect (priv->widget, priv->state_changed_id);
if (g_signal_handler_is_connected (priv->widget, priv->grab_notify_id))
g_signal_handler_disconnect (priv->widget, priv->grab_notify_id);
widget_unmanage_popover (priv->widget, popover);
}
if (priv->parent_scrollable)
{
if (g_signal_handler_is_connected (priv->parent_scrollable, priv->scrollable_notify_id))
g_signal_handler_disconnect (priv->parent_scrollable, priv->scrollable_notify_id);
_gtk_popover_set_scrollable (popover, NULL);
}
priv->widget = relative_to;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_RELATIVE_TO]);
if (priv->widget)
{
priv->window =
GTK_WINDOW (gtk_widget_get_ancestor (priv->widget, GTK_TYPE_WINDOW));
priv->hierarchy_changed_id =
g_signal_connect (priv->widget, "hierarchy-changed",
G_CALLBACK (_gtk_popover_parent_hierarchy_changed),
popover);
priv->size_allocate_id =
g_signal_connect (priv->widget, "size-allocate",
G_CALLBACK (_gtk_popover_parent_size_allocate),
popover);
priv->unmap_id =
g_signal_connect (priv->widget, "unmap",
G_CALLBACK (_gtk_popover_parent_unmap),
popover);
priv->state_changed_id =
g_signal_connect (priv->widget, "state-flags-changed",
G_CALLBACK (_gtk_popover_parent_state_changed),
popover);
priv->grab_notify_id =
g_signal_connect (priv->widget, "grab-notify",
G_CALLBACK (_gtk_popover_parent_grab_notify),
popover);
/* Give ownership of the popover to widget */
widget_manage_popover (priv->widget, popover);
}
if (priv->window)
_gtk_window_add_popover (priv->window, GTK_WIDGET (popover), priv->widget, TRUE);
if (relative_to)
scrollable = GTK_SCROLLABLE (gtk_widget_get_ancestor (priv->widget, GTK_TYPE_SCROLLABLE));
if (scrollable)
{
_gtk_popover_set_scrollable (popover, scrollable);
priv->scrollable_notify_id =
g_signal_connect (priv->parent_scrollable, "notify",
G_CALLBACK (scrollable_notify_cb), popover);
}
_gtk_widget_update_parent_muxer (GTK_WIDGET (popover));
g_object_unref (popover);
}
static void
gtk_popover_update_pointing_to (GtkPopover *popover,
const GdkRectangle *pointing_to)
{
GtkPopoverPrivate *priv = popover->priv;
if (pointing_to)
{
priv->pointing_to = *pointing_to;
priv->has_pointing_to = TRUE;
}
else
priv->has_pointing_to = FALSE;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_POINTING_TO]);
}
static void
gtk_popover_update_preferred_position (GtkPopover *popover,
GtkPositionType position)
{
if (popover->priv->preferred_position == position)
return;
popover->priv->preferred_position = position;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_POSITION]);
}
/**
* gtk_popover_new:
* @relative_to: (allow-none): #GtkWidget the popover is related to
*
* Creates a new popover to point to @relative_to
*
* Returns: a new #GtkPopover
*
* Since: 3.12
**/
GtkWidget *
gtk_popover_new (GtkWidget *relative_to)
{
g_return_val_if_fail (relative_to == NULL || GTK_IS_WIDGET (relative_to), NULL);
return g_object_new (GTK_TYPE_POPOVER,
"relative-to", relative_to,
NULL);
}
/**
* 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.
*
* Since: 3.12
**/
void
gtk_popover_set_relative_to (GtkPopover *popover,
GtkWidget *relative_to)
{
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (relative_to == NULL || GTK_IS_WIDGET (relative_to));
gtk_popover_update_relative_to (popover, relative_to);
if (relative_to)
gtk_popover_update_position (popover);
}
/**
* gtk_popover_get_relative_to:
* @popover: a #GtkPopover
*
* Returns the widget @popover is currently attached to
*
* Returns: (transfer none): a #GtkWidget
*
* Since: 3.12
**/
GtkWidget *
gtk_popover_get_relative_to (GtkPopover *popover)
{
g_return_val_if_fail (GTK_IS_POPOVER (popover), NULL);
return popover->priv->widget;
}
/**
* 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().
*
* Since: 3.12
**/
void
gtk_popover_set_pointing_to (GtkPopover *popover,
const GdkRectangle *rect)
{
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (rect != NULL);
gtk_popover_update_pointing_to (popover, rect);
gtk_popover_update_position (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 = popover->priv;
g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE);
if (rect)
{
if (priv->has_pointing_to)
*rect = priv->pointing_to;
else if (priv->widget)
{
gtk_widget_get_allocation (priv->widget, rect);
rect->x = rect->y = 0;
}
}
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
*
* Since: 3.12
**/
void
gtk_popover_set_position (GtkPopover *popover,
GtkPositionType position)
{
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (position >= GTK_POS_LEFT && position <= GTK_POS_BOTTOM);
gtk_popover_update_preferred_position (popover, position);
gtk_popover_update_position (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)
{
g_return_val_if_fail (GTK_IS_POPOVER (popover), GTK_POS_TOP);
return popover->priv->preferred_position;
}
/**
* gtk_popover_set_modal:
* @popover: a #GtkPopover
* @modal: #TRUE to make popover claim all input within the toplevel
*
* Sets whether @popover is modal, a modal popover will grab all input
* within the toplevel and grab the keyboard focus on it when being
* displayed. Clicking outside the popover area or pressing Esc will
* dismiss the popover and ungrab input.
*
* Since: 3.12
**/
void
gtk_popover_set_modal (GtkPopover *popover,
gboolean modal)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_if_fail (GTK_IS_POPOVER (popover));
modal = modal != FALSE;
if (priv->modal == modal)
return;
priv->modal = modal;
if (gtk_widget_is_visible (GTK_WIDGET (popover)))
gtk_popover_apply_modality (popover, priv->modal);
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_MODAL]);
}
/**
* gtk_popover_get_modal:
* @popover: a #GtkPopover
*
* Returns whether the popover is modal, see gtk_popover_set_modal to
* see the implications of this.
*
* Returns: #TRUE if @popover is modal
*
* Since: 3.12
**/
gboolean
gtk_popover_get_modal (GtkPopover *popover)
{
g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE);
return popover->priv->modal;
}
/**
* gtk_popover_set_transitions_enabled:
* @popover: a #GtkPopover
* @transitions_enabled: Whether transitions are enabled
*
* Sets whether show/hide transitions are enabled on this popover
*
* Since: 3.16
*/
void
gtk_popover_set_transitions_enabled (GtkPopover *popover,
gboolean transitions_enabled)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_if_fail (GTK_IS_POPOVER (popover));
transitions_enabled = !!transitions_enabled;
if (priv->transitions_enabled == transitions_enabled)
return;
priv->transitions_enabled = transitions_enabled;
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_TRANSITIONS_ENABLED]);
}
/**
* gtk_popover_get_transitions_enabled:
* @popover: a #GtkPopover
*
* Returns whether show/hide transitions are enabled on this popover.
*
* Returns: #TRUE if the show and hide transitions of the given
* popover are enabled, #FALSE otherwise.
*
* Since: 3.16
*/
gboolean
gtk_popover_get_transitions_enabled (GtkPopover *popover)
{
g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE);
return popover->priv->transitions_enabled;
}
static void
back_to_main (GtkWidget *popover)
{
GtkWidget *stack;
stack = gtk_bin_get_child (GTK_BIN (popover));
gtk_stack_set_visible_child_name (GTK_STACK (stack), "main");
}
/**
* gtk_popover_bind_model:
* @popover: a #GtkPopover
* @model: (allow-none): the #GMenuModel to bind to or %NULL to remove
* binding
* @action_namespace: (allow-none): the namespace for actions in @model
*
* Establishes a binding between a #GtkPopover and a #GMenuModel.
*
* The contents of @popover are removed and then refilled with menu items
* according to @model. When @model changes, @popover is updated.
* Calling this function twice on @popover with different @model will
* cause the first binding to be replaced with a binding to the new
* model. If @model is %NULL then any previous binding is undone and
* all children are removed.
*
* If @action_namespace is non-%NULL then the effect is as if all
* actions mentioned in the @model have their names prefixed with the
* namespace, plus a dot. For example, if the action “quit” is
* mentioned and @action_namespace is “app” then the effective action
* name is “app.quit”.
*
* This function uses #GtkActionable to define the action name and
* target values on the created menu items. If you want to use an
* action group other than “app” and “win”, or if you want to use a
* #GtkMenuShell outside of a #GtkApplicationWindow, then you will need
* to attach your own action group to the widget hierarchy using
* gtk_widget_insert_action_group(). As an example, if you created a
* group with a “quit” action and inserted it with the name “mygroup”
* then you would use the action name “mygroup.quit” in your
* #GMenuModel.
*
* Since: 3.12
*/
void
gtk_popover_bind_model (GtkPopover *popover,
GMenuModel *model,
const gchar *action_namespace)
{
GtkWidget *child;
GtkWidget *stack;
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (model == NULL || G_IS_MENU_MODEL (model));
child = gtk_bin_get_child (GTK_BIN (popover));
if (child)
gtk_widget_destroy (child);
if (model)
{
stack = gtk_stack_new ();
gtk_stack_set_vhomogeneous (GTK_STACK (stack), FALSE);
gtk_stack_set_transition_type (GTK_STACK (stack), GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT);
gtk_stack_set_interpolate_size (GTK_STACK (stack), TRUE);
gtk_widget_show (stack);
gtk_container_add (GTK_CONTAINER (popover), stack);
gtk_menu_section_box_new_toplevel (GTK_STACK (stack),
model,
action_namespace,
popover);
gtk_stack_set_visible_child_name (GTK_STACK (stack), "main");
g_signal_connect (popover, "unmap", G_CALLBACK (back_to_main), NULL);
g_signal_connect (popover, "map", G_CALLBACK (back_to_main), NULL);
}
}
/**
* gtk_popover_new_from_model:
* @relative_to: (allow-none): #GtkWidget the popover is related to
* @model: a #GMenuModel
*
* Creates a #GtkPopover and populates it according to
* @model. The popover is pointed to the @relative_to widget.
*
* The created buttons are connected to actions found in the
* #GtkApplicationWindow to which the popover belongs - typically
* by means of being attached to a widget that is contained within
* the #GtkApplicationWindows widget hierarchy.
*
* Actions can also be added using gtk_widget_insert_action_group()
* on the menus attach widget or on any of its parent widgets.
*
* Returns: the new #GtkPopover
*
* Since: 3.12
*/
GtkWidget *
gtk_popover_new_from_model (GtkWidget *relative_to,
GMenuModel *model)
{
GtkWidget *popover;
GtkStyleContext *style_context;
g_return_val_if_fail (relative_to == NULL || GTK_IS_WIDGET (relative_to), NULL);
g_return_val_if_fail (G_IS_MENU_MODEL (model), NULL);
popover = gtk_popover_new (relative_to);
gtk_popover_bind_model (GTK_POPOVER (popover), model, NULL);
style_context = gtk_widget_get_style_context (GTK_WIDGET (popover));
gtk_style_context_add_class (style_context, GTK_STYLE_CLASS_MENU);
return popover;
}
/**
* gtk_popover_set_default_widget:
* @popover: a #GtkPopover
* @widget: (allow-none): the new default widget, or %NULL
*
* Sets the widget that should be set as default widget while
* the popover is shown (see gtk_window_set_default()). #GtkPopover
* remembers the previous default widget and reestablishes it
* when the popover is dismissed.
*
* Since: 3.18
*/
void
gtk_popover_set_default_widget (GtkPopover *popover,
GtkWidget *widget)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_if_fail (GTK_IS_POPOVER (popover));
g_return_if_fail (widget == NULL || gtk_widget_get_can_default (widget));
if (priv->default_widget == widget)
return;
if (priv->default_widget)
g_object_unref (priv->default_widget);
priv->default_widget = widget;
if (priv->default_widget)
g_object_ref (priv->default_widget);
if (gtk_widget_get_mapped (GTK_WIDGET (popover)))
gtk_window_set_default (priv->window, priv->default_widget);
}
/**
* gtk_popover_get_default_widget:
* @popover: a #GtkPopover
*
* Gets the widget that should be set as the default while
* the popover is shown.
*
* Returns: (nullable) (transfer none): the default widget,
* or %NULL if there is none
*
* Since: 3.18
*/
GtkWidget *
gtk_popover_get_default_widget (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_val_if_fail (GTK_IS_POPOVER (popover), NULL);
return priv->default_widget;
}
/**
* gtk_popover_set_constrain_to:
* @popover: a #GtkPopover
* @constraint: the new constraint
*
* Sets a constraint for positioning this popover.
*
* Note that not all platforms support placing popovers freely,
* and may already impose constraints.
*
* Since: 3.20
*/
void
gtk_popover_set_constrain_to (GtkPopover *popover,
GtkPopoverConstraint constraint)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_if_fail (GTK_IS_POPOVER (popover));
if (priv->constraint == constraint)
return;
priv->constraint = constraint;
gtk_popover_update_position (popover);
g_object_notify_by_pspec (G_OBJECT (popover), properties[PROP_CONSTRAIN_TO]);
}
/**
* gtk_popover_get_constrain_to:
* @popover: a #GtkPopover
*
* Returns the constraint for placing this popover.
* See gtk_popover_set_constrain_to().
*
* Returns: the constraint for placing this popover.
*
* Since: 3.20
*/
GtkPopoverConstraint
gtk_popover_get_constrain_to (GtkPopover *popover)
{
GtkPopoverPrivate *priv = popover->priv;
g_return_val_if_fail (GTK_IS_POPOVER (popover), GTK_POPOVER_CONSTRAINT_WINDOW);
return priv->constraint;
}
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