forked from AuroraMiddleware/gtk
35d2539ef8
The press gesture does not need to set claimed state just for n-press tracking, it will however reset all other click gestures on each press if the event gets propagated all the way up. Fixes tracking of multi-press in gestures in widgets that are children of the window handle. E.g. the headerbar listview in the "File browser" gtk4-demo demo.
651 lines
20 KiB
C
651 lines
20 KiB
C
/*
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* Copyright (c) 2020 Alexander Mikhaylenko <alexm@gnome.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 Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "gtkwindowhandle.h"
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#include "gtkbinlayout.h"
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#include "gtkbox.h"
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#include "gtkbuildable.h"
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#include "gtkgestureclick.h"
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#include "gtkgesturedrag.h"
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#include "gtkgestureprivate.h"
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#include "gtkintl.h"
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#include "gtkmodelbuttonprivate.h"
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#include "gtknative.h"
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#include "gtkpopovermenuprivate.h"
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#include "gtkprivate.h"
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#include "gtkseparator.h"
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#include "gtkwidgetprivate.h"
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/**
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* SECTION:gtkwindowhandle
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* @Short_description: A titlebar area widget
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* @Title: GtkWindowHandle
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* @See_also: #GtkWindow, #GtkHeaderBar
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*
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* GtkWindowHandle is a titlebar area widget. When added into a window, it can
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* be dragged to move the window, and handles right click double click and
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* middle click as expected of a titlebar.
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*
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* # CSS nodes
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*
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* #GtkWindowHandle has a single CSS node with the name windowhandle.
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*/
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struct _GtkWindowHandle {
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GtkWidget parent_instance;
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GtkGesture *click_gesture;
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GtkGesture *drag_gesture;
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GtkGesture *bubble_drag_gesture;
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GtkWidget *child;
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GtkWidget *fallback_menu;
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};
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enum {
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PROP_0,
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PROP_CHILD,
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LAST_PROP
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};
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static GParamSpec *props[LAST_PROP] = { NULL, };
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static void gtk_window_handle_buildable_iface_init (GtkBuildableIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkWindowHandle, gtk_window_handle, GTK_TYPE_WIDGET,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_window_handle_buildable_iface_init))
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static void
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lower_window (GtkWindowHandle *self)
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{
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GdkSurface *surface =
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gtk_native_get_surface (gtk_widget_get_native (GTK_WIDGET (self)));
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gdk_toplevel_lower (GDK_TOPLEVEL (surface));
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}
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static GtkWindow *
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get_window (GtkWindowHandle *self)
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{
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GtkRoot *root = gtk_widget_get_root (GTK_WIDGET (self));
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if (GTK_IS_WINDOW (root))
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return GTK_WINDOW (root);
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return NULL;
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}
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static void
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restore_window_clicked (GtkModelButton *button,
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GtkWindowHandle *self)
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{
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GtkWindow *window = get_window (self);
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if (!window)
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return;
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if (gtk_window_is_maximized (window))
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gtk_window_unmaximize (window);
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}
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static void
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minimize_window_clicked (GtkModelButton *button,
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GtkWindowHandle *self)
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{
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GtkWindow *window = get_window (self);
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if (!window)
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return;
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/* Turns out, we can't minimize a maximized window */
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if (gtk_window_is_maximized (window))
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gtk_window_unmaximize (window);
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gtk_window_minimize (window);
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}
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static void
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maximize_window_clicked (GtkModelButton *button,
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GtkWindowHandle *self)
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{
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GtkWindow *window = get_window (self);
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if (window)
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gtk_window_maximize (window);
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}
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static void
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close_window_clicked (GtkModelButton *button,
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GtkWindowHandle *self)
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{
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GtkWindow *window = get_window (self);
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if (window)
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gtk_window_close (window);
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}
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static void
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popup_menu_closed (GtkPopover *popover,
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GtkWindowHandle *self)
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{
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g_clear_pointer (&self->fallback_menu, gtk_widget_unparent);
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}
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static void
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do_popup_fallback (GtkWindowHandle *self,
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GdkEvent *event)
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{
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GdkRectangle rect = { 0, 0, 1, 1 };
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GdkDevice *device;
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GtkWidget *box, *menuitem;
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GtkWindow *window;
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gboolean maximized, resizable, deletable;
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g_clear_pointer (&self->fallback_menu, gtk_widget_unparent);
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window = get_window (self);
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if (window)
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{
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maximized = gtk_window_is_maximized (window);
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resizable = gtk_window_get_resizable (window);
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deletable = gtk_window_get_deletable (window);
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}
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else
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{
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maximized = FALSE;
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resizable = FALSE;
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deletable = FALSE;
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}
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self->fallback_menu = gtk_popover_menu_new ();
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gtk_widget_set_parent (self->fallback_menu, GTK_WIDGET (self));
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gtk_popover_set_has_arrow (GTK_POPOVER (self->fallback_menu), FALSE);
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gtk_widget_set_halign (self->fallback_menu, GTK_ALIGN_START);
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device = gdk_event_get_device (event);
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if (device && gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
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device = gdk_device_get_associated_device (device);
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if (device)
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{
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GtkNative *native;
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GdkSurface *surface;
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double px, py;
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double nx, ny;
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native = gtk_widget_get_native (GTK_WIDGET (self));
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surface = gtk_native_get_surface (native);
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gdk_surface_get_device_position (surface, device, &px, &py, NULL);
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gtk_native_get_surface_transform (native, &nx, &ny);
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gtk_widget_translate_coordinates (GTK_WIDGET (gtk_widget_get_native (GTK_WIDGET (self))),
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GTK_WIDGET (self),
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px - nx, py - ny,
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&px, &py);
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rect.x = px;
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rect.y = py;
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}
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gtk_popover_set_pointing_to (GTK_POPOVER (self->fallback_menu), &rect);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_popover_menu_add_submenu (GTK_POPOVER_MENU (self->fallback_menu), box, "main");
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menuitem = gtk_model_button_new ();
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g_object_set (menuitem, "text", _("Restore"), NULL);
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gtk_widget_set_sensitive (menuitem, maximized && resizable);
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g_signal_connect (G_OBJECT (menuitem), "clicked",
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G_CALLBACK (restore_window_clicked), self);
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gtk_box_append (GTK_BOX (box), menuitem);
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menuitem = gtk_model_button_new ();
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g_object_set (menuitem, "text", _("Minimize"), NULL);
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g_signal_connect (G_OBJECT (menuitem), "clicked",
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G_CALLBACK (minimize_window_clicked), self);
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gtk_box_append (GTK_BOX (box), menuitem);
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menuitem = gtk_model_button_new ();
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g_object_set (menuitem, "text", _("Maximize"), NULL);
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gtk_widget_set_sensitive (menuitem, resizable && !maximized);
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g_signal_connect (G_OBJECT (menuitem), "clicked",
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G_CALLBACK (maximize_window_clicked), self);
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gtk_box_append (GTK_BOX (box), menuitem);
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menuitem = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL);
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gtk_box_append (GTK_BOX (box), menuitem);
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menuitem = gtk_model_button_new ();
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g_object_set (menuitem, "text", _("Close"), NULL);
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gtk_widget_set_sensitive (menuitem, deletable);
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g_signal_connect (G_OBJECT (menuitem), "clicked",
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G_CALLBACK (close_window_clicked), self);
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gtk_box_append (GTK_BOX (box), menuitem);
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g_signal_connect (self->fallback_menu, "closed",
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G_CALLBACK (popup_menu_closed), self);
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gtk_popover_popup (GTK_POPOVER (self->fallback_menu));
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}
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static void
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do_popup (GtkWindowHandle *self,
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GdkEvent *event)
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{
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GdkSurface *surface =
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gtk_native_get_surface (gtk_widget_get_native (GTK_WIDGET (self)));
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if (!gdk_toplevel_show_window_menu (GDK_TOPLEVEL (surface), event))
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do_popup_fallback (self, event);
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}
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static gboolean
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perform_titlebar_action (GtkWindowHandle *self,
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GdkEvent *event,
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guint button,
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gint n_press)
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{
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GtkSettings *settings;
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gchar *action = NULL;
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gboolean retval = TRUE;
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GtkActionMuxer *context;
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settings = gtk_widget_get_settings (GTK_WIDGET (self));
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switch (button)
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{
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case GDK_BUTTON_PRIMARY:
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if (n_press == 2)
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g_object_get (settings, "gtk-titlebar-double-click", &action, NULL);
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break;
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case GDK_BUTTON_MIDDLE:
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g_object_get (settings, "gtk-titlebar-middle-click", &action, NULL);
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break;
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case GDK_BUTTON_SECONDARY:
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g_object_get (settings, "gtk-titlebar-right-click", &action, NULL);
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break;
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default:
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break;
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}
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context = _gtk_widget_get_action_muxer (GTK_WIDGET (self), TRUE);
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if (action == NULL)
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retval = FALSE;
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else if (g_str_equal (action, "none"))
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retval = FALSE;
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/* treat all maximization variants the same */
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else if (g_str_has_prefix (action, "toggle-maximize"))
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g_action_group_activate_action (G_ACTION_GROUP (context),
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"window.toggle-maximized",
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NULL);
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else if (g_str_equal (action, "lower"))
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lower_window (self);
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else if (g_str_equal (action, "minimize"))
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g_action_group_activate_action (G_ACTION_GROUP (context),
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"window.minimize",
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NULL);
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else if (g_str_equal (action, "menu"))
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do_popup (self, event);
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else
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{
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g_warning ("Unsupported titlebar action %s", action);
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retval = FALSE;
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}
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g_free (action);
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return retval;
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}
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static void
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click_gesture_pressed_cb (GtkGestureClick *gesture,
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int n_press,
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double x,
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double y,
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GtkWindowHandle *self)
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{
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GtkWidget *widget;
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GdkEventSequence *sequence;
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GdkEvent *event;
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guint button;
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widget = GTK_WIDGET (self);
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sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
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button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
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event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
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if (!event)
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return;
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if (n_press > 1)
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gtk_gesture_set_state (self->drag_gesture, GTK_EVENT_SEQUENCE_DENIED);
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if (gdk_display_device_is_grabbed (gtk_widget_get_display (widget),
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gtk_gesture_get_device (GTK_GESTURE (gesture))))
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{
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gtk_gesture_set_state (self->drag_gesture, GTK_EVENT_SEQUENCE_DENIED);
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return;
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}
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switch (button)
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{
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case GDK_BUTTON_PRIMARY:
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if (n_press == 2)
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{
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perform_titlebar_action (self, event, button, n_press);
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gtk_gesture_set_sequence_state (GTK_GESTURE (gesture),
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sequence, GTK_EVENT_SEQUENCE_CLAIMED);
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}
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break;
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case GDK_BUTTON_SECONDARY:
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if (perform_titlebar_action (self, event, button, n_press))
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gtk_gesture_set_sequence_state (GTK_GESTURE (gesture),
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sequence, GTK_EVENT_SEQUENCE_CLAIMED);
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gtk_event_controller_reset (GTK_EVENT_CONTROLLER (gesture));
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gtk_event_controller_reset (GTK_EVENT_CONTROLLER (self->drag_gesture));
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break;
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case GDK_BUTTON_MIDDLE:
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if (perform_titlebar_action (self, event, button, n_press))
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gtk_gesture_set_sequence_state (GTK_GESTURE (gesture),
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sequence, GTK_EVENT_SEQUENCE_CLAIMED);
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break;
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default:
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return;
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}
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}
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static void
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drag_gesture_update_cb (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkWindowHandle *self)
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{
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int double_click_distance;
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GtkSettings *settings;
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settings = gtk_widget_get_settings (GTK_WIDGET (self));
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g_object_get (settings,
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"gtk-double-click-distance", &double_click_distance,
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NULL);
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if (ABS (offset_x) > double_click_distance ||
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ABS (offset_y) > double_click_distance)
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{
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GdkEventSequence *sequence;
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double start_x, start_y;
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double native_x, native_y;
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double window_x, window_y;
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GtkNative *native;
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GdkSurface *surface;
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sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
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if (gtk_event_controller_get_propagation_phase (GTK_EVENT_CONTROLLER (gesture)) == GTK_PHASE_CAPTURE)
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{
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GtkWidget *event_widget = gtk_gesture_get_last_target (GTK_GESTURE (gesture), sequence);
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/* Check whether the target widget should be left alone at handling
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* the sequence, this is better done late to give room for gestures
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* there to go denied.
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*
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* Besides claiming gestures, we must bail out too if there's gestures
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* in the "none" state at this point, as those are still handling events
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* and can potentially go claimed, and we don't want to stop the target
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* widget from doing anything.
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*/
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if (event_widget != GTK_WIDGET (self) &&
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gtk_widget_consumes_motion (event_widget, GTK_WIDGET (self), sequence))
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{
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
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return;
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}
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}
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
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gtk_gesture_drag_get_start_point (gesture, &start_x, &start_y);
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native = gtk_widget_get_native (GTK_WIDGET (self));
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gtk_widget_translate_coordinates (GTK_WIDGET (self),
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GTK_WIDGET (native),
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start_x, start_y,
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&window_x, &window_y);
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gtk_native_get_surface_transform (native, &native_x, &native_y);
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window_x += native_x;
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window_y += native_y;
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surface = gtk_native_get_surface (native);
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if (GDK_IS_TOPLEVEL (surface))
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gdk_toplevel_begin_move (GDK_TOPLEVEL (surface),
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gtk_gesture_get_device (GTK_GESTURE (gesture)),
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gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)),
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window_x, window_y,
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gtk_event_controller_get_current_event_time (GTK_EVENT_CONTROLLER (gesture)));
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gtk_event_controller_reset (GTK_EVENT_CONTROLLER (gesture));
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gtk_event_controller_reset (GTK_EVENT_CONTROLLER (self->click_gesture));
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}
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}
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static GtkGesture *
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create_drag_gesture (GtkWindowHandle *self)
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{
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GtkGesture *gesture;
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gesture = gtk_gesture_drag_new ();
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g_signal_connect (gesture, "drag-update",
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G_CALLBACK (drag_gesture_update_cb), self);
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gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
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return gesture;
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}
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static void
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gtk_window_handle_unrealize (GtkWidget *widget)
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{
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GtkWindowHandle *self = GTK_WINDOW_HANDLE (widget);
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g_clear_pointer (&self->fallback_menu, gtk_widget_unparent);
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GTK_WIDGET_CLASS (gtk_window_handle_parent_class)->unrealize (widget);
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}
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static void
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gtk_window_handle_dispose (GObject *object)
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{
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GtkWindowHandle *self = GTK_WINDOW_HANDLE (object);
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g_clear_pointer (&self->child, gtk_widget_unparent);
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G_OBJECT_CLASS (gtk_window_handle_parent_class)->dispose (object);
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}
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static void
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gtk_window_handle_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkWindowHandle *self = GTK_WINDOW_HANDLE (object);
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switch (prop_id)
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{
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|
case PROP_CHILD:
|
|
g_value_set_object (value, gtk_window_handle_get_child (self));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_window_handle_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkWindowHandle *self = GTK_WINDOW_HANDLE (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_CHILD:
|
|
gtk_window_handle_set_child (self, g_value_get_object (value));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_window_handle_class_init (GtkWindowHandleClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
|
|
object_class->dispose = gtk_window_handle_dispose;
|
|
object_class->get_property = gtk_window_handle_get_property;
|
|
object_class->set_property = gtk_window_handle_set_property;
|
|
|
|
widget_class->unrealize = gtk_window_handle_unrealize;
|
|
|
|
props[PROP_CHILD] =
|
|
g_param_spec_object ("child",
|
|
P_("Child"),
|
|
P_("The child widget"),
|
|
GTK_TYPE_WIDGET,
|
|
GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
|
|
|
|
g_object_class_install_properties (object_class, LAST_PROP, props);
|
|
|
|
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
|
|
gtk_widget_class_set_css_name (widget_class, I_("windowhandle"));
|
|
}
|
|
|
|
static void
|
|
gtk_window_handle_init (GtkWindowHandle *self)
|
|
{
|
|
self->click_gesture = gtk_gesture_click_new ();
|
|
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (self->click_gesture), 0);
|
|
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (self->click_gesture),
|
|
GTK_PHASE_BUBBLE);
|
|
g_signal_connect (self->click_gesture, "pressed",
|
|
G_CALLBACK (click_gesture_pressed_cb), self);
|
|
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->click_gesture));
|
|
|
|
self->drag_gesture = create_drag_gesture (self);
|
|
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (self->drag_gesture),
|
|
GTK_PHASE_CAPTURE);
|
|
|
|
self->bubble_drag_gesture = create_drag_gesture (self);
|
|
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (self->bubble_drag_gesture),
|
|
GTK_PHASE_BUBBLE);
|
|
}
|
|
|
|
static GtkBuildableIface *parent_buildable_iface;
|
|
|
|
static void
|
|
gtk_window_handle_buildable_add_child (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *type)
|
|
{
|
|
if (GTK_IS_WIDGET (child))
|
|
gtk_window_handle_set_child (GTK_WINDOW_HANDLE (buildable), GTK_WIDGET (child));
|
|
else
|
|
parent_buildable_iface->add_child (buildable, builder, child, type);
|
|
}
|
|
|
|
static void
|
|
gtk_window_handle_buildable_iface_init (GtkBuildableIface *iface)
|
|
{
|
|
parent_buildable_iface = g_type_interface_peek_parent (iface);
|
|
|
|
iface->add_child = gtk_window_handle_buildable_add_child;
|
|
}
|
|
|
|
/**
|
|
* gtk_window_handle_new:
|
|
*
|
|
* Creates a new #GtkWindowHandle.
|
|
*
|
|
* Returns: a new #GtkWindowHandle.
|
|
**/
|
|
GtkWidget *
|
|
gtk_window_handle_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_WINDOW_HANDLE, NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_window_handle_get_child:
|
|
* @self: a #GtkWindowHandle
|
|
*
|
|
* Gets the child widget of @self.
|
|
*
|
|
* Returns: (nullable) (transfer none): the child widget of @self
|
|
*/
|
|
GtkWidget *
|
|
gtk_window_handle_get_child (GtkWindowHandle *self)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_WINDOW_HANDLE (self), NULL);
|
|
|
|
return self->child;
|
|
}
|
|
|
|
/**
|
|
* gtk_window_handle_set_child:
|
|
* @self: a #GtkWindowHandle
|
|
* @child: (allow-none): the child widget
|
|
*
|
|
* Sets the child widget of @self.
|
|
*/
|
|
void
|
|
gtk_window_handle_set_child (GtkWindowHandle *self,
|
|
GtkWidget *child)
|
|
{
|
|
g_return_if_fail (GTK_IS_WINDOW_HANDLE (self));
|
|
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
|
|
|
|
if (self->child == child)
|
|
return;
|
|
|
|
g_clear_pointer (&self->child, gtk_widget_unparent);
|
|
|
|
self->child = child;
|
|
|
|
if (child)
|
|
gtk_widget_set_parent (child, GTK_WIDGET (self));
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_CHILD]);
|
|
}
|