371 lines
11 KiB
C
371 lines
11 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikapopup.c
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* Copyright (C) 2003-2014 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "widgets-types.h"
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#include "pikapopup.h"
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enum
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{
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CANCEL,
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CONFIRM,
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LAST_SIGNAL
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};
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typedef struct _PikaPopupPrivate
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{
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GtkWidget *parent;
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} PikaPopupPrivate;
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static gboolean pika_popup_map_event (GtkWidget *widget,
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GdkEventAny *event);
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static gboolean pika_popup_button_press (GtkWidget *widget,
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GdkEventButton *bevent);
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static gboolean pika_popup_key_press (GtkWidget *widget,
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GdkEventKey *kevent);
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static void pika_popup_real_cancel (PikaPopup *popup);
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static void pika_popup_real_confirm (PikaPopup *popup);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaPopup, pika_popup, GTK_TYPE_WINDOW)
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#define parent_class pika_popup_parent_class
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static guint popup_signals[LAST_SIGNAL];
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static void
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pika_popup_class_init (PikaPopupClass *klass)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GtkBindingSet *binding_set;
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popup_signals[CANCEL] =
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g_signal_new ("cancel",
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G_OBJECT_CLASS_TYPE (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (PikaPopupClass, cancel),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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popup_signals[CONFIRM] =
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g_signal_new ("confirm",
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G_OBJECT_CLASS_TYPE (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (PikaPopupClass, confirm),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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widget_class->map_event = pika_popup_map_event;
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widget_class->button_press_event = pika_popup_button_press;
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widget_class->key_press_event = pika_popup_key_press;
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klass->cancel = pika_popup_real_cancel;
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klass->confirm = pika_popup_real_confirm;
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binding_set = gtk_binding_set_by_class (klass);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
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"cancel", 0);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
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"confirm", 0);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
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"confirm", 0);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
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"confirm", 0);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
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"confirm", 0);
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gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0,
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"confirm", 0);
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}
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static void
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pika_popup_init (PikaPopup *popup)
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{
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}
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static void
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pika_popup_grab_notify (GtkWidget *widget,
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gboolean was_grabbed)
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{
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if (was_grabbed)
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return;
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/* ignore grabs on one of our children, like a scrollbar */
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if (gtk_widget_is_ancestor (gtk_grab_get_current (), widget))
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return;
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g_signal_emit (widget, popup_signals[CANCEL], 0);
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}
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static gboolean
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pika_popup_grab_broken_event (GtkWidget *widget,
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GdkEventGrabBroken *event)
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{
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pika_popup_grab_notify (widget, FALSE);
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return FALSE;
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}
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static gboolean
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pika_popup_map_event (GtkWidget *widget,
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GdkEventAny *event)
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{
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GdkDisplay *display = gtk_widget_get_display (widget);
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GTK_WIDGET_CLASS (parent_class)->map_event (widget, event);
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/* grab with owner_events == TRUE so the popup's widgets can
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* receive events. we filter away events outside this toplevel
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* away in button_press()
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*/
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if (gdk_seat_grab (gdk_display_get_default_seat (display),
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gtk_widget_get_window (widget),
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GDK_SEAT_CAPABILITY_ALL,
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TRUE,
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NULL,
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(GdkEvent *) event,
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NULL, NULL) == GDK_GRAB_SUCCESS)
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{
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gtk_grab_add (widget);
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g_signal_connect (widget, "grab-notify",
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G_CALLBACK (pika_popup_grab_notify),
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widget);
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g_signal_connect (widget, "grab-broken-event",
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G_CALLBACK (pika_popup_grab_broken_event),
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widget);
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return FALSE;
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}
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/* if we could not grab, destroy the popup instead of leaving it
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* around uncloseable.
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*/
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g_signal_emit (widget, popup_signals[CANCEL], 0);
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return FALSE;
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}
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static gboolean
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pika_popup_button_press (GtkWidget *widget,
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GdkEventButton *bevent)
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{
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GtkWidget *event_widget;
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gboolean cancel = FALSE;
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gboolean confirm = FALSE;
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event_widget = gtk_get_event_widget ((GdkEvent *) bevent);
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if (event_widget == widget)
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{
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GtkAllocation allocation;
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gtk_widget_get_allocation (widget, &allocation);
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/* the event was on the popup, which can either be really on the
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* popup or outside pika (owner_events == TRUE, see map())
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*/
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if (bevent->x < 0 ||
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bevent->y < 0 ||
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bevent->x > allocation.width ||
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bevent->y > allocation.height)
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{
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/* the event was outsde pika */
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cancel = TRUE;
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}
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}
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else if (gtk_widget_get_toplevel (event_widget) != widget)
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{
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PikaPopupPrivate *priv;
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/* the event was on a pika widget, but not inside the popup */
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priv = pika_popup_get_instance_private (PIKA_POPUP (widget));
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if (event_widget == priv->parent || gtk_widget_is_ancestor (event_widget, priv->parent))
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confirm = TRUE;
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else
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cancel = TRUE;
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}
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if (cancel)
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g_signal_emit (widget, popup_signals[CANCEL], 0);
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else if (confirm)
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g_signal_emit (widget, popup_signals[CONFIRM], 0);
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return (cancel || confirm);
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}
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static gboolean
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pika_popup_key_press (GtkWidget *widget,
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GdkEventKey *kevent)
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{
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GtkWidget *focus = gtk_window_get_focus (GTK_WINDOW (widget));
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gboolean activate_binding = TRUE;
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if (focus &&
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(GTK_IS_EDITABLE (focus) ||
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GTK_IS_TEXT_VIEW (focus)) &&
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(kevent->keyval == GDK_KEY_space ||
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kevent->keyval == GDK_KEY_KP_Space))
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{
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/* if a text widget has the focus, and the key was space,
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* don't manually activate the binding to allow entering the
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* space in the focus widget.
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*/
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activate_binding = FALSE;
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}
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if (activate_binding)
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{
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GtkBindingSet *binding_set;
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binding_set = gtk_binding_set_by_class (g_type_class_peek (PIKA_TYPE_POPUP));
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/* invoke the popup's binding entries manually, because
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* otherwise the focus widget (GtkTreeView e.g.) would consume
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* it
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*/
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if (gtk_binding_set_activate (binding_set,
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kevent->keyval,
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kevent->state,
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G_OBJECT (widget)))
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{
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return TRUE;
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}
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}
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return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, kevent);
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}
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static void
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pika_popup_real_cancel (PikaPopup *popup)
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{
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GtkWidget *widget = GTK_WIDGET (popup);
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if (gtk_grab_get_current () == widget)
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gtk_grab_remove (widget);
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gtk_widget_destroy (widget);
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}
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static void
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pika_popup_real_confirm (PikaPopup *popup)
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{
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GtkWidget *widget = GTK_WIDGET (popup);
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if (gtk_grab_get_current () == widget)
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gtk_grab_remove (widget);
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gtk_widget_destroy (widget);
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}
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/**
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* pika_popup_show:
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* @popup:
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* @widget: the parent widget which will determine @popup location.
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*
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* Shows @popup above @widget. Its placement will be determined relatively to
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* @widget.
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* Moreover clicking outside @popup but within @widget will be considered a
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* "confirm" signal. Typically @widget would be a button. A typical UX could be:
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* clicking it once would show the popup; clicking it again would confirm the
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* choice within the popup.
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*/
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void
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pika_popup_show (PikaPopup *popup,
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GtkWidget *widget)
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{
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PikaPopupPrivate *priv;
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GdkDisplay *display;
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GdkMonitor *monitor;
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GtkRequisition requisition;
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GtkAllocation allocation;
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GdkRectangle rect;
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gint orig_x;
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gint orig_y;
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gint x;
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gint y;
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g_return_if_fail (PIKA_IS_POPUP (popup));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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priv = pika_popup_get_instance_private (popup);
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priv->parent = widget;
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gtk_widget_get_preferred_size (GTK_WIDGET (popup), &requisition, NULL);
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gtk_widget_get_allocation (widget, &allocation);
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gdk_window_get_origin (gtk_widget_get_window (widget), &orig_x, &orig_y);
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if (! gtk_widget_get_has_window (widget))
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{
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orig_x += allocation.x;
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orig_y += allocation.y;
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}
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display = gtk_widget_get_display (widget);
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monitor = gdk_display_get_monitor_at_point (display, orig_x, orig_y);
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gdk_monitor_get_workarea (monitor, &rect);
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if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
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{
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x = orig_x + allocation.width - requisition.width;
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if (x < rect.x)
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x -= allocation.width - requisition.width;
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}
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else
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{
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x = orig_x;
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if (x + requisition.width > rect.x + rect.width)
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x += allocation.width - requisition.width;
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}
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y = orig_y + allocation.height;
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if (y + requisition.height > rect.y + rect.height)
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y = orig_y - requisition.height;
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gtk_window_set_screen (GTK_WINDOW (popup), gtk_widget_get_screen (widget));
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gtk_window_set_transient_for (GTK_WINDOW (popup),
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GTK_WINDOW (gtk_widget_get_toplevel (widget)));
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gtk_window_move (GTK_WINDOW (popup), x, y);
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gtk_widget_show (GTK_WIDGET (popup));
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}
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