forked from AuroraMiddleware/gtk
2ff74eb667
GTK will not up front know how to correctly calculate a size, since it will not be able to reliably predict the constraints that may exist where it will be mapped. Thus, to handle this, calculate the size of the toplevel by having GDK emitting a signal called 'compute-size' that will contain information needed for computing a toplevel window size. This signal may be emitted at any time, e.g. during gdk_toplevel_present(), or spontaneously if constraints change. This also drops the max size from the toplevel layout, while moving the min size from the toplevel layout struct to the struct passed via the signal, This needs changes to a test case where we make sure we process GDK_CONFIGURE etc, which means we also needs to show the window and process all pending events in the test-focus-chain test case.
640 lines
21 KiB
C
640 lines
21 KiB
C
/*
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* Copyright © 2020 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Matthias Clasen <mclasen@redhat.com>
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*/
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#include "config.h"
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#include "gdkintl.h"
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#include "gdk-private.h"
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#include "gdktoplevelprivate.h"
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#include <graphene-gobject.h>
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#include <math.h>
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/**
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* SECTION:gdktoplevel
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* @Short_description: Interface for toplevel surfaces
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* @Title: Toplevels
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*
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* A #GdkToplevel is a freestanding toplevel surface.
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*/
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G_DEFINE_INTERFACE (GdkToplevel, gdk_toplevel, GDK_TYPE_SURFACE)
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enum
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{
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COMPUTE_SIZE,
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N_SIGNALS
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};
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static guint signals[N_SIGNALS] = { 0 };
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static gboolean
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gdk_toplevel_default_present (GdkToplevel *toplevel,
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GdkToplevelLayout *layout)
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{
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return FALSE;
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}
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static gboolean
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gdk_toplevel_default_minimize (GdkToplevel *toplevel)
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{
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return FALSE;
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}
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static gboolean
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gdk_toplevel_default_lower (GdkToplevel *toplevel)
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{
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return FALSE;
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}
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static void
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gdk_toplevel_default_focus (GdkToplevel *toplevel,
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guint32 timestamp)
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{
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}
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static gboolean
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gdk_toplevel_default_show_window_menu (GdkToplevel *toplevel,
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GdkEvent *event)
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{
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return FALSE;
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}
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static gboolean
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gdk_toplevel_default_supports_edge_constraints (GdkToplevel *toplevel)
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{
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return FALSE;
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}
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static void
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gdk_toplevel_default_inhibit_system_shortcuts (GdkToplevel *toplevel,
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GdkEvent *event)
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{
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}
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static void
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gdk_toplevel_default_restore_system_shortcuts (GdkToplevel *toplevel)
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{
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}
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void
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gdk_toplevel_notify_compute_size (GdkToplevel *toplevel,
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GdkToplevelSize *size)
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{
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g_signal_emit (toplevel, signals[COMPUTE_SIZE], 0, size);
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}
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static void
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gdk_toplevel_default_init (GdkToplevelInterface *iface)
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{
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iface->present = gdk_toplevel_default_present;
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iface->minimize = gdk_toplevel_default_minimize;
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iface->lower = gdk_toplevel_default_lower;
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iface->focus = gdk_toplevel_default_focus;
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iface->show_window_menu = gdk_toplevel_default_show_window_menu;
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iface->supports_edge_constraints = gdk_toplevel_default_supports_edge_constraints;
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iface->inhibit_system_shortcuts = gdk_toplevel_default_inhibit_system_shortcuts;
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iface->restore_system_shortcuts = gdk_toplevel_default_restore_system_shortcuts;
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g_object_interface_install_property (iface,
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g_param_spec_flags ("state",
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P_("State"),
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P_("State"),
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GDK_TYPE_SURFACE_STATE, GDK_SURFACE_STATE_WITHDRAWN,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_interface_install_property (iface,
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g_param_spec_string ("title",
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"Title",
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"The title of the surface",
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NULL,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_string ("startup-id",
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"Startup ID",
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"The startup ID of the surface",
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NULL,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_object ("transient-for",
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"Transient For",
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"The transient parent of the surface",
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GDK_TYPE_SURFACE,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("modal",
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"Modal",
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"Whether the surface is modal",
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FALSE,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_pointer ("icon-list",
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"Icon List",
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"The list of icon textures",
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("decorated",
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"Decorated",
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"Decorated",
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FALSE,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("deletable",
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"Deletable",
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"Deletable",
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FALSE,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_enum ("fullscreen-mode",
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"Fullscreen mode",
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"Fullscreen mode",
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GDK_TYPE_FULLSCREEN_MODE,
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GDK_FULLSCREEN_ON_CURRENT_MONITOR,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY));
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("shortcuts-inhibited",
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"Shortcuts inhibited",
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"Whether keyboard shortcuts are inhibited",
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FALSE,
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G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY));
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/**
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* GdkToplevel::compute-size:
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* @toplevel: a #GdkToplevel
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* @size: (type Gdk.ToplevelSize) (out caller-allocates): a #GdkToplevelSize
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*
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* Compute the desired size of the toplevel, given the information passed via
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* the #GdkToplevelSize object.
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*
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* It will normally be emitted during or after gdk_toplevel_present(),
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* depending on the configuration received by the windowing system. It may
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* also be emitted at any other point in time, in response to the windowing
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* system spontaneously changing the configuration.
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*
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* It is the responsibility of the GdkToplevel user to handle this signal;
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* failing to do so will result in an arbitrary fixed size being used as a
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* result. The signal may be emitted with the pointer to the @size being
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* %NULL, in which case only the minimum and maximum size needs to be
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* computed. This could happen for example if the toplevel configuration is in
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* a state where the size is decided by the windowing system, such as
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* maximized or fullscreen.
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*/
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signals[COMPUTE_SIZE] =
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g_signal_new ("compute-size",
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GDK_TYPE_TOPLEVEL,
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 1,
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GDK_TYPE_TOPLEVEL_SIZE | G_SIGNAL_TYPE_STATIC_SCOPE);
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}
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guint
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gdk_toplevel_install_properties (GObjectClass *object_class,
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guint first_prop)
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{
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_STATE, "state");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_TITLE, "title");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_STARTUP_ID, "startup-id");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_TRANSIENT_FOR, "transient-for");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_MODAL, "modal");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_ICON_LIST, "icon-list");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_DECORATED, "decorated");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_DELETABLE, "deletable");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_FULLSCREEN_MODE, "fullscreen-mode");
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g_object_class_override_property (object_class, first_prop + GDK_TOPLEVEL_PROP_SHORTCUTS_INHIBITED, "shortcuts-inhibited");
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return GDK_TOPLEVEL_NUM_PROPERTIES;
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}
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/**
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* gdk_toplevel_present:
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* @toplevel: the #GdkToplevel to show
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* @layout: the #GdkToplevelLayout object used to layout
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*
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* Present @toplevel after having processed the #GdkToplevelLayout rules.
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* If the toplevel was previously not showing, it will be showed,
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* otherwise it will change layout according to @layout.
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*
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* GDK may emit the 'compute-size' signal to let the user of this toplevel
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* compute the preferred size of the toplevel surface. See
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* #GdkToplevel::compute-size for details.
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*
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* Presenting may fail.
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*
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* Returns: %FALSE if @toplevel failed to be presented, otherwise %TRUE.
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*/
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gboolean
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gdk_toplevel_present (GdkToplevel *toplevel,
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GdkToplevelLayout *layout)
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{
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g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), FALSE);
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g_return_val_if_fail (layout != NULL, FALSE);
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return GDK_TOPLEVEL_GET_IFACE (toplevel)->present (toplevel, layout);
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}
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/**
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* gdk_toplevel_minimize:
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* @toplevel: a #GdkToplevel
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*
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* Asks to minimize the @toplevel.
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*
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* The windowing system may choose to ignore the request.
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*
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* Returns: %TRUE if the surface was minimized
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*/
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gboolean
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gdk_toplevel_minimize (GdkToplevel *toplevel)
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{
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g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), FALSE);
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return GDK_TOPLEVEL_GET_IFACE (toplevel)->minimize (toplevel);
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}
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/**
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* gdk_toplevel_lower:
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* @toplevel: a #GdkToplevel
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*
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* Asks to lower the @toplevel below other windows.
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*
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* The windowing system may choose to ignore the request.
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*
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* Returns: %TRUE if the surface was lowered
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*/
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gboolean
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gdk_toplevel_lower (GdkToplevel *toplevel)
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{
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g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), FALSE);
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return GDK_TOPLEVEL_GET_IFACE (toplevel)->lower (toplevel);
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}
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/**
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* gdk_toplevel_focus:
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* @toplevel: a #GdkToplevel
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* @timestamp: timestamp of the event triggering the surface focus
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*
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* Sets keyboard focus to @surface.
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*
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* In most cases, gtk_window_present_with_time() should be used
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* on a #GtkWindow, rather than calling this function.
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*/
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void
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gdk_toplevel_focus (GdkToplevel *toplevel,
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guint32 timestamp)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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return GDK_TOPLEVEL_GET_IFACE (toplevel)->focus (toplevel, timestamp);
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}
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/**
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* gdk_toplevel_get_state:
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* @toplevel: a #GdkToplevel
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*
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* Gets the bitwise OR of the currently active surface state flags,
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* from the #GdkSurfaceState enumeration.
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*
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* Returns: surface state bitfield
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*/
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GdkSurfaceState
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gdk_toplevel_get_state (GdkToplevel *toplevel)
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{
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GdkSurfaceState state;
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g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), 0);
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g_object_get (toplevel, "state", &state, NULL);
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return state;
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}
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/**
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* gdk_toplevel_set_title:
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* @toplevel: a #GdkToplevel
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* @title: title of @surface
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*
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* Sets the title of a toplevel surface, to be displayed in the titlebar,
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* in lists of windows, etc.
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*/
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void
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gdk_toplevel_set_title (GdkToplevel *toplevel,
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const char *title)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "title", title, NULL);
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}
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/**
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* gdk_toplevel_set_startup_id:
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* @toplevel: a #GdkToplevel
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* @startup_id: a string with startup-notification identifier
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*
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* When using GTK, typically you should use gtk_window_set_startup_id()
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* instead of this low-level function.
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*/
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void
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gdk_toplevel_set_startup_id (GdkToplevel *toplevel,
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const char *startup_id)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "startup-id", startup_id, NULL);
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}
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/**
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* gdk_toplevel_set_transient_for:
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* @toplevel: a #GdkToplevel
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* @parent: another toplevel #GdkSurface
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*
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* Indicates to the window manager that @surface is a transient dialog
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* associated with the application surface @parent. This allows the
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* window manager to do things like center @surface on @parent and
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* keep @surface above @parent.
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*
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* See gtk_window_set_transient_for() if you’re using #GtkWindow or
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* #GtkDialog.
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*/
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void
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gdk_toplevel_set_transient_for (GdkToplevel *toplevel,
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GdkSurface *parent)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "transient-for", parent, NULL);
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}
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/**
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* gdk_toplevel_set_modal:
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* @toplevel: A toplevel surface
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* @modal: %TRUE if the surface is modal, %FALSE otherwise.
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*
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* The application can use this hint to tell the
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* window manager that a certain surface has modal
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* behaviour. The window manager can use this information
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* to handle modal surfaces in a special way.
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*
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* You should only use this on surfaces for which you have
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* previously called gdk_toplevel_set_transient_for().
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*/
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void
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gdk_toplevel_set_modal (GdkToplevel *toplevel,
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gboolean modal)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "modal", modal, NULL);
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}
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/**
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* gdk_toplevel_set_icon_list:
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* @toplevel: a #GdkToplevel
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* @surfaces: (transfer none) (element-type GdkTexture):
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* A list of textures to use as icon, of different sizes
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*
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* Sets a list of icons for the surface.
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*
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* One of these will be used to represent the surface in iconic form.
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* The icon may be shown in window lists or task bars. Which icon
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* size is shown depends on the window manager. The window manager
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* can scale the icon but setting several size icons can give better
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* image quality.
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*
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* Note that some platforms don't support surface icons.
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*/
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void
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gdk_toplevel_set_icon_list (GdkToplevel *toplevel,
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GList *surfaces)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "icon-list", surfaces, NULL);
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}
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/**
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* gdk_toplevel_show_window_menu:
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* @toplevel: a #GdkToplevel
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* @event: a #GdkEvent to show the menu for
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*
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* Asks the windowing system to show the window menu.
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*
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* The window menu is the menu shown when right-clicking the titlebar
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* on traditional windows managed by the window manager. This is useful
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* for windows using client-side decorations, activating it with a
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* right-click on the window decorations.
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*
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* Returns: %TRUE if the window menu was shown and %FALSE otherwise.
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*/
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gboolean
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gdk_toplevel_show_window_menu (GdkToplevel *toplevel,
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GdkEvent *event)
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{
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g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), FALSE);
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return GDK_TOPLEVEL_GET_IFACE (toplevel)->show_window_menu (toplevel, event);
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}
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/**
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* gdk_toplevel_set_decorated:
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* @toplevel: a #GdkToplevel
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* @decorated: %TRUE to request decorations
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*
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* Setting @decorated to %FALSE hints the desktop environment
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* that the surface has its own, client-side decorations and
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* does not need to have window decorations added.
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*/
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void
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gdk_toplevel_set_decorated (GdkToplevel *toplevel,
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gboolean decorated)
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{
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g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
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g_object_set (toplevel, "decorated", decorated, NULL);
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}
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/**
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* gdk_toplevel_set_deletable:
|
||
* @toplevel: a #GdkToplevel
|
||
* @deletable: %TRUE to request a delete button
|
||
*
|
||
* Setting @deletable to %TRUE hints the desktop environment
|
||
* that it should offer the user a way to close the surface.
|
||
*/
|
||
void
|
||
gdk_toplevel_set_deletable (GdkToplevel *toplevel,
|
||
gboolean deletable)
|
||
{
|
||
g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
|
||
|
||
g_object_set (toplevel, "deletable", deletable, NULL);
|
||
}
|
||
|
||
/**
|
||
* gdk_toplevel_supports_edge_constraints:
|
||
* @toplevel: a #GdkToplevel
|
||
*
|
||
* Returns whether the desktop environment supports
|
||
* tiled window states.
|
||
*
|
||
* Returns: %TRUE if the desktop environment supports
|
||
* tiled window states
|
||
*/
|
||
gboolean
|
||
gdk_toplevel_supports_edge_constraints (GdkToplevel *toplevel)
|
||
{
|
||
g_return_val_if_fail (GDK_IS_TOPLEVEL (toplevel), FALSE);
|
||
|
||
return GDK_TOPLEVEL_GET_IFACE (toplevel)->supports_edge_constraints (toplevel);
|
||
}
|
||
|
||
/**
|
||
* gdk_toplevel_inhibit_system_shortcuts:
|
||
* @toplevel: the #GdkToplevel requesting system keyboard shortcuts
|
||
* @event: (nullable): the #GdkEvent that is triggering the inhibit
|
||
* request, or %NULL if none is available.
|
||
*
|
||
* Requests that the @toplevel inhibit the system shortcuts, asking the
|
||
* desktop environment/windowing system to let all keyboard events reach
|
||
* the surface, as long as it is focused, instead of triggering system
|
||
* actions.
|
||
*
|
||
* If granted, the rerouting remains active until the default shortcuts
|
||
* processing is restored with gdk_toplevel_restore_system_shortcuts(),
|
||
* or the request is revoked by the desktop environment, windowing system
|
||
* or the user.
|
||
*
|
||
* A typical use case for this API is remote desktop or virtual machine
|
||
* viewers which need to inhibit the default system keyboard shortcuts
|
||
* so that the remote session or virtual host gets those instead of the
|
||
* local environment.
|
||
*
|
||
* The windowing system or desktop environment may ask the user to grant
|
||
* or deny the request or even choose to ignore the request entirely.
|
||
*
|
||
* The caller can be notified whenever the request is granted or revoked
|
||
* by listening to the GdkToplevel::shortcuts-inhibited property.
|
||
*
|
||
*/
|
||
void
|
||
gdk_toplevel_inhibit_system_shortcuts (GdkToplevel *toplevel,
|
||
GdkEvent *event)
|
||
{
|
||
g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
|
||
|
||
GDK_TOPLEVEL_GET_IFACE (toplevel)->inhibit_system_shortcuts (toplevel,
|
||
event);
|
||
}
|
||
|
||
/**
|
||
* gdk_toplevel_restore_system_shortcuts:
|
||
* @toplevel: a #GdkToplevel
|
||
*
|
||
* Restore default system keyboard shortcuts which were previously
|
||
* requested to be inhibited by gdk_toplevel_inhibit_system_shortcuts().
|
||
*/
|
||
void
|
||
gdk_toplevel_restore_system_shortcuts (GdkToplevel *toplevel)
|
||
{
|
||
g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
|
||
|
||
GDK_TOPLEVEL_GET_IFACE (toplevel)->restore_system_shortcuts (toplevel);
|
||
}
|
||
|
||
/**
|
||
* gdk_toplevel_begin_resize:
|
||
* @toplevel: a #GdkToplevel
|
||
* @edge: the edge or corner from which the drag is started
|
||
* @device: (nullable): the device used for the operation
|
||
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
|
||
* @x: surface X coordinate of mouse click that began the drag
|
||
* @y: surface Y coordinate of mouse click that began the drag
|
||
* @timestamp: timestamp of mouse click that began the drag (use gdk_event_get_time())
|
||
*
|
||
* Begins an interactive resize operation (for a toplevel surface).
|
||
* You might use this function to implement a “window resize grip.”
|
||
*/
|
||
void
|
||
gdk_toplevel_begin_resize (GdkToplevel *toplevel,
|
||
GdkSurfaceEdge edge,
|
||
GdkDevice *device,
|
||
int button,
|
||
double x,
|
||
double y,
|
||
guint32 timestamp)
|
||
{
|
||
g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
|
||
|
||
if (device == NULL)
|
||
{
|
||
GdkSeat *seat = gdk_display_get_default_seat (GDK_SURFACE (toplevel)->display);
|
||
if (button == 0)
|
||
device = gdk_seat_get_keyboard (seat);
|
||
else
|
||
device = gdk_seat_get_pointer (seat);
|
||
}
|
||
|
||
GDK_TOPLEVEL_GET_IFACE (toplevel)->begin_resize (toplevel,
|
||
edge,
|
||
device,
|
||
button,
|
||
x, y,
|
||
timestamp);
|
||
}
|
||
|
||
/**
|
||
* gdk_toplevel_begin_move:
|
||
* @toplevel: a #GdkToplevel
|
||
* @device: the device used for the operation
|
||
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
|
||
* @x: surface X coordinate of mouse click that began the drag
|
||
* @y: surface Y coordinate of mouse click that began the drag
|
||
* @timestamp: timestamp of mouse click that began the drag
|
||
*
|
||
* Begins an interactive move operation (for a toplevel surface).
|
||
* You might use this function to implement draggable titlebars.
|
||
*/
|
||
void
|
||
gdk_toplevel_begin_move (GdkToplevel *toplevel,
|
||
GdkDevice *device,
|
||
int button,
|
||
double x,
|
||
double y,
|
||
guint32 timestamp)
|
||
{
|
||
g_return_if_fail (GDK_IS_TOPLEVEL (toplevel));
|
||
|
||
if (device == NULL)
|
||
{
|
||
GdkSeat *seat = gdk_display_get_default_seat (GDK_SURFACE (toplevel)->display);
|
||
if (button == 0)
|
||
device = gdk_seat_get_keyboard (seat);
|
||
else
|
||
device = gdk_seat_get_pointer (seat);
|
||
}
|
||
|
||
GDK_TOPLEVEL_GET_IFACE (toplevel)->begin_move (toplevel,
|
||
device,
|
||
button,
|
||
x, y,
|
||
timestamp);
|
||
}
|