Initial commit

Added basic UI
2023-07-20 22:34:35 +02:00
commit d15fe49c71
16 changed files with 878 additions and 0 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -0,0 +1,55 @@
+---
+Language: Cpp
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: AllIfsAndElse
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterReturnType: None
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterCaseLabel: true
+  AfterControlStatement: Always
+  AfterEnum: true
+  AfterFunction: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeElse: true
+  BeforeWhile: false
+  IndentBraces: false
+  SplitEmptyFunction: false
+# BreakBeforeBraces: Allman
+BreakStringLiterals: false
+ColumnLimit: 0
+ContinuationIndentWidth: 2
+IndentCaseBlocks: false
+IndentCaseLabels: true
+PointerAlignment: Left
+
+# Indent
+IndentWidth: 4
+TabWidth: 4
+UseTab: ForIndentation
+
+# Spaces
+SpaceAfterCStyleCast: true
+SpaceAfterLogicalNot: false
+SpaceAroundPointerQualifiers: Default
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeParens: Custom
+SpaceBeforeParensOptions:
+  AfterControlStatements: false
+  AfterFunctionDeclarationName: false
+  AfterFunctionDefinitionName: false
+  BeforeNonEmptyParentheses: false
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesInCStyleCastParentheses: false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+
+# Preprocessor
+SortIncludes: Never
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+build/
--- a/46
+++ b/46
@@ -0,0 +1,46 @@
+NAME=ginput
+CC=gcc
+CFLAGS=$(shell pkg-config --cflags gtk4) $(shell pkg-config --cflags libadwaita-1) -O3 -I src
+LDFLAGS=$(shell pkg-config --libs gtk4) $(shell pkg-config --libs libadwaita-1)
+BUILD_DIR=build
+
+CMB := $(wildcard ui/*.cmb)
+C_FILES := $(shell find $(src) -name '*.c')
+
+all: resources $(BUILD_DIR)/$(NAME)
+
+# Top-level targets
+resources: $(BUILD_DIR)/glib-2.0/schemas/gschemas.compiled
+
+$(BUILD_DIR)/$(NAME): $(BUILD_DIR)/resource.c $(C_FILES) | $(BUILD_DIR)
+	gcc $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+# Build directory
+$(BUILD_DIR):
+	mkdir -p $(BUILD_DIR)
+
+# UI : Cambalache contains all of the UI files, just compile them all
+$(BUILD_DIR)/%.ui: ui/$(NAME).cmb | $(BUILD_DIR)
+	cambalache -E $^
+	mv ui/*.ui $(BUILD_DIR)/
+
+# Resources
+$(BUILD_DIR)/resource.c: ui/ginput.gresource.xml ui/style.css $(BUILD_DIR)/main-window.ui
+	cp ui/style.css $(BUILD_DIR)/
+	cp ui/ginput.gresource.xml $(BUILD_DIR)/
+	cd $(BUILD_DIR) && glib-compile-resources --generate-source --target=resource.c ginput.gresource.xml
+
+$(BUILD_DIR)/glib-2.0/schemas/gschemas.compiled: v.ginput.gschema.xml | $(BUILD_DIR)
+	mkdir -p $(BUILD_DIR)/glib-2.0/schemas
+	glib-compile-schemas . --targetdir=$(BUILD_DIR)/glib-2.0/schemas
+
+# Phony targets
+.PHONY: clean
+clean:
+	rm -f ui/*.ui # Remove compiled UI files that might be left over
+	rm -rf $(BUILD_DIR)
+
+.PHONY: run
+.SILENT: run
+run: all
+	XDG_DATA_DIRS=./$(BUILD_DIR) ./$(BUILD_DIR)/ginput
--- a/src/main.c
+++ b/src/main.c
@@ -0,0 +1,7 @@
+#include "ui/ginput-application.h"
+
+int main(gint argc, gchar** argv)
+{
+	AdwApplication* application = ginput_application_new();
+	return g_application_run(G_APPLICATION(application), argc, argv);
+}
--- a/src/ui/ginput-application.c
+++ b/src/ui/ginput-application.c
@@ -0,0 +1,87 @@
+#include "ginput-application.h"
+#include "ui/main-window.h"
+
+struct _GinputApplication
+{
+	AdwApplication parent;
+
+	MainWindow* window;
+};
+
+G_DEFINE_TYPE(GinputApplication, ginput_application, ADW_TYPE_APPLICATION)
+
+/*
+ * Special 'activate' trigger of the application, called when the application is launched
+ * This shows the main window
+ */
+static void
+ginput_application_activate(GApplication* application)
+{
+	GinputApplication* self = GINPUT_APPLICATION(application);
+	gtk_window_present(GTK_WINDOW(self->window));
+}
+
+static void
+ginput_application_startup(GApplication* application)
+{
+	GinputApplication* self = GINPUT_APPLICATION(application);
+
+	G_APPLICATION_CLASS(ginput_application_parent_class)->startup(application);
+
+	self->window = main_window_new(ADW_APPLICATION(application));
+
+	GtkCssProvider* provider = gtk_css_provider_new();
+	gtk_css_provider_load_from_resource(provider, "/v/ginput/style.css");
+	gtk_style_context_add_provider_for_display(gdk_display_get_default(),
+	                                           GTK_STYLE_PROVIDER(provider),
+	                                           GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+}
+
+static void
+ginput_application_finalize(GObject* object)
+{
+	G_OBJECT_CLASS(ginput_application_parent_class)->finalize(object);
+}
+
+static GObject*
+ginput_application_constructor(GType type, guint n_construct_params, GObjectConstructParam* construct_params)
+{
+	static GObject* self = NULL;
+
+	if(self == NULL)
+	{
+		self = G_OBJECT_CLASS(ginput_application_parent_class)->constructor(type, n_construct_params, construct_params);
+		g_object_add_weak_pointer(self, (gpointer) &self);
+		return self;
+	}
+
+	return g_object_ref(self);
+}
+
+static void
+ginput_application_class_init(GinputApplicationClass* klass)
+{
+	GObjectClass* object_class = G_OBJECT_CLASS(klass);
+	GApplicationClass* application_class = G_APPLICATION_CLASS(klass);
+
+	object_class->finalize = ginput_application_finalize;
+	object_class->constructor = ginput_application_constructor;
+	application_class->activate = ginput_application_activate;
+	application_class->startup = ginput_application_startup;
+	// application_class->command_line = ginput_application_command_line;
+	// application_class->handle_local_options = ginput_application_handle_local_options;
+}
+
+static void
+ginput_application_init(GinputApplication* self)
+{
+}
+
+AdwApplication*
+ginput_application_new(void)
+{
+	return g_object_new(ginput_application_get_type(),
+	                    "application-id", "v.ginput",
+	                    "flags", G_APPLICATION_DEFAULT_FLAGS,
+	                    NULL);
+}
--- a/src/ui/ginput-application.h
+++ b/src/ui/ginput-application.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <adwaita.h>
+
+G_BEGIN_DECLS
+
+G_DECLARE_FINAL_TYPE(GinputApplication, ginput_application, GINPUT, APPLICATION, AdwApplication)
+
+AdwApplication* ginput_application_new(void);
+
+G_END_DECLS
--- a/src/ui/main-window.c
+++ b/src/ui/main-window.c
@@ -0,0 +1,275 @@
+#define G_LOG_DOMAIN "main-window"
+
+#include "main-window.h"
+#include "panels/empty_panel.h"
+
+#include <gtk/gtk.h>
+
+struct _MainWindow
+{
+	AdwApplicationWindow parent;
+
+	AdwHeaderBar* header;
+	AdwLeaflet* main_leaflet;
+	// TODO LIST : CcPanelList       *panel_list;
+	GtkBox* sidebar_box;
+	AdwWindowTitle* sidebar_title_widget;
+	GtkStack* stack;
+
+	// GtkWidget  *old_panel;
+	GtkWidget* current_panel;
+	char* current_panel_id;
+	// GQueue     *previous_panels;
+
+	GtkWidget* custom_titlebar;
+
+	// CcShellModel *store;
+
+	// CcPanel *active_panel;
+	GSettings* settings;
+
+	gboolean folded;
+
+	// CcPanelListView previous_list_view;
+};
+
+G_DEFINE_TYPE(MainWindow, main_window, ADW_TYPE_APPLICATION_WINDOW)
+enum
+{
+	PROP_0,
+	PROP_ACTIVE_PANEL,
+	PROP_MODEL,
+	PROP_FOLDED,
+};
+
+static gboolean activate_panel(MainWindow* self, Panel* panel, const gchar* id)
+{
+	self->current_panel = GTK_WIDGET(panel);
+	gtk_stack_add_named(self->stack, self->current_panel, id);
+	gtk_stack_set_visible_child_name (self->stack, id);
+}
+
+/*
+ * @Override from GtkWidget
+ */
+static void
+main_window_map(GtkWidget* widget)
+{
+	MainWindow* self = (MainWindow*) widget;
+	GTK_WIDGET_CLASS(main_window_parent_class)->map(widget);
+}
+
+/*
+ * @Override from GtkWidget
+ */
+static void
+main_window_unmap(GtkWidget* widget)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(widget);
+	gboolean maximized;
+	gint height;
+	gint width;
+
+	maximized = gtk_window_is_maximized(GTK_WINDOW(self));
+	gtk_window_get_default_size(GTK_WINDOW(self), &width, &height);
+
+	g_settings_set(self->settings,
+	               "window-state",
+	               "(iib)",
+	               width,
+	               height,
+	               maximized);
+
+	GTK_WIDGET_CLASS(main_window_parent_class)->unmap(widget);
+}
+
+static void
+main_window_get_property(GObject* object, guint property_id, GValue* value, GParamSpec* pspec)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(object);
+
+	switch(property_id)
+	{
+			// case PROP_ACTIVE_PANEL:
+			//   g_value_set_object (value, self->active_panel);
+			//   break;
+
+			// case PROP_MODEL:
+			//   g_value_set_object (value, self->store);
+			//   break;
+
+		case PROP_FOLDED:
+			g_value_set_boolean(value, self->folded);
+			break;
+
+		default:
+			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
+	}
+}
+
+static void
+main_window_set_property(GObject* object,
+                         guint property_id,
+                         const GValue* value,
+                         GParamSpec* pspec)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(object);
+
+	switch(property_id)
+	{
+			// case PROP_ACTIVE_PANEL:
+			// 	set_active_panel(self, g_value_get_object(value));
+			// 	break;
+
+			// case PROP_MODEL:
+			// 	g_assert(self->store == NULL);
+			// 	self->store = g_value_dup_object(value);
+			// 	break;
+
+		case PROP_FOLDED:
+			self->folded = g_value_get_boolean(value);
+			break;
+
+		default:
+			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
+	}
+}
+
+static void
+load_window_state(MainWindow* self)
+{
+	gint current_width = -1;
+	gint current_height = -1;
+	gboolean maximized = FALSE;
+
+	g_settings_get(self->settings,
+	               "window-state",
+	               "(iib)",
+	               &current_width,
+	               &current_height,
+	               &maximized);
+
+	if(current_width != -1 && current_height != -1)
+		gtk_window_set_default_size(GTK_WINDOW(self), current_width, current_height);
+	if(maximized)
+		gtk_window_maximize(GTK_WINDOW(self));
+}
+
+static void
+main_window_constructed(GObject* object)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(object);
+
+	load_window_state(self);
+
+	/* Add the panels */
+	// setup_model (self);
+
+	/* After everything is loaded, select the last used panel, if any,
+	 * or the first visible panel. We do that in an idle handler so we
+	 * have a chance to skip it when another panel has been explicitly
+	 * activated from commandline parameter or from DBus method */
+	//   g_idle_add_once ((GSourceOnceFunc) maybe_load_last_panel, self);
+
+	//   g_signal_connect_swapped (self->panel_list,
+	//                             "notify::view",
+	//                             G_CALLBACK (update_headerbar_buttons),
+	//                             self);
+
+	//   update_headerbar_buttons (self);
+	//   adw_leaflet_set_visible_child (self->main_leaflet,
+	//                                  GTK_WIDGET (self->sidebar_box));
+
+	G_OBJECT_CLASS(main_window_parent_class)->constructed(object);
+}
+
+static void
+main_window_dispose(GObject* object)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(object);
+
+	g_clear_pointer(&self->current_panel_id, g_free);
+	// g_clear_object (&self->store);
+	// g_clear_object (&self->active_panel);
+
+	G_OBJECT_CLASS(main_window_parent_class)->dispose(object);
+}
+
+static void
+main_window_finalize(GObject* object)
+{
+	MainWindow* self = GINPUT_MAIN_WINDOW(object);
+
+	//   if (self->previous_panels)
+	//     {
+	//       g_queue_free_full (self->previous_panels, g_free);
+	//       self->previous_panels = NULL;
+	//     }
+
+	g_clear_object(&self->settings);
+
+	G_OBJECT_CLASS(main_window_parent_class)->finalize(object);
+}
+
+static void
+main_window_class_init(MainWindowClass* klass)
+{
+	GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
+	GObjectClass* object_class = G_OBJECT_CLASS(klass);
+
+	object_class->get_property = main_window_get_property;
+	object_class->set_property = main_window_set_property;
+	object_class->constructed = main_window_constructed;
+	object_class->dispose = main_window_dispose;
+	object_class->finalize = main_window_finalize;
+
+	widget_class->map = main_window_map;
+	widget_class->unmap = main_window_unmap;
+
+	g_object_class_install_property(object_class, PROP_FOLDED,
+	                                g_param_spec_boolean("folded", "Folded", "Whether the window is foled", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+	gtk_widget_class_set_template_from_resource(widget_class, "/v/ginput/main-window.ui");
+
+	gtk_widget_class_bind_template_child(widget_class, MainWindow, header);
+	gtk_widget_class_bind_template_child(widget_class, MainWindow, main_leaflet);
+	// gtk_widget_class_bind_template_child(widget_class, MainWindow, panel_list);
+	gtk_widget_class_bind_template_child(widget_class, MainWindow, sidebar_box);
+	gtk_widget_class_bind_template_child(widget_class, MainWindow, sidebar_title_widget);
+	gtk_widget_class_bind_template_child(widget_class, MainWindow, stack);
+}
+
+static void
+main_window_init(MainWindow* self)
+{
+	gtk_widget_init_template(GTK_WIDGET(self));
+
+	self->settings = g_settings_new("v.ginput");
+	// self->previous_panels = g_queue_new ();
+	// self->previous_list_view = cc_panel_list_get_view (self->panel_list);
+
+	g_object_bind_property(self->main_leaflet,
+	                       "folded",
+	                       self,
+	                       "folded",
+	                       G_BINDING_SYNC_CREATE);
+	
+	activate_panel(self, empty_panel_new(), "empty");
+}
+
+// TODO use translation
+#define _(x) x
+
+MainWindow*
+main_window_new(AdwApplication* application)
+{
+	g_return_val_if_fail(GTK_IS_APPLICATION(application), NULL);
+
+	return g_object_new(main_window_get_type(),
+	                    "application", application,
+	                    "resizable", TRUE,
+	                    "title", _("Input devices"),
+	                    "icon-name", "input-devices",
+	                    "show-menubar", FALSE,
+	                    NULL);
+}
--- a/src/ui/main-window.h
+++ b/src/ui/main-window.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <adwaita.h>
+
+G_BEGIN_DECLS
+
+G_DECLARE_FINAL_TYPE(MainWindow, main_window, GINPUT, MAIN_WINDOW, AdwApplicationWindow)
+
+MainWindow* main_window_new(AdwApplication* application);
+
+G_END_DECLS
--- a/src/ui/panel.c
+++ b/src/ui/panel.c
@@ -0,0 +1,206 @@
+#include "panel.h"
+
+/*
+ * Abstract class representing a panel
+ */
+
+typedef struct
+{
+	AdwBin* content_bin;
+	GtkBox* main_box;
+	AdwBin* titlebar_bin;
+	AdwHeaderBar* titlebar;
+
+	GCancellable* cancellable;
+	gboolean folded;
+	gchar* title;
+} PanelPrivate;
+
+static void panel_buildable_init(GtkBuildableIface* iface);
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE(Panel, panel, ADW_TYPE_BIN,
+                                 G_ADD_PRIVATE(Panel)
+                                   G_IMPLEMENT_INTERFACE(GTK_TYPE_BUILDABLE, panel_buildable_init))
+
+static GtkBuildableIface* parent_buildable_iface;
+
+enum
+{
+	PROP_0,
+	PROP_PARAMETERS,
+	PROP_FOLDED,
+	PROP_TITLE,
+	N_PROPS
+};
+
+static GParamSpec* properties[N_PROPS];
+
+static void
+panel_buildable_add_child(GtkBuildable* buildable, GtkBuilder* builder, GObject* child, const char* type)
+{
+	PanelPrivate* priv = panel_get_instance_private(GINPUT_PANEL(buildable));
+
+	if(GTK_IS_WIDGET(child) && !priv->main_box)
+	{
+		adw_bin_set_child(ADW_BIN(buildable), GTK_WIDGET(child));
+		return;
+	}
+
+	if(g_strcmp0(type, "content") == 0)
+		adw_bin_set_child(priv->content_bin, GTK_WIDGET(child));
+	else if(g_strcmp0(type, "titlebar-start") == 0)
+		adw_header_bar_pack_start(priv->titlebar, GTK_WIDGET(child));
+	else if(g_strcmp0(type, "titlebar-end") == 0)
+		adw_header_bar_pack_end(priv->titlebar, GTK_WIDGET(child));
+	else if(g_strcmp0(type, "titlebar") == 0)
+		adw_bin_set_child(priv->titlebar_bin, GTK_WIDGET(child));
+	else
+		parent_buildable_iface->add_child(buildable, builder, child, type);
+}
+
+/*
+ * @Override from GtkBuildableIface
+ */
+static void
+panel_buildable_init(GtkBuildableIface* iface)
+{
+	parent_buildable_iface = g_type_interface_peek_parent(iface);
+	iface->add_child = panel_buildable_add_child;
+}
+
+/*
+ * @Override from GObject
+ */
+static void
+panel_set_property(GObject* object, guint prop_id, const GValue* value, GParamSpec* pspec)
+{
+	PanelPrivate* priv = panel_get_instance_private(GINPUT_PANEL(object));
+
+	switch(prop_id)
+	{
+		case PROP_PARAMETERS:
+		{
+			g_autoptr(GVariant) v = NULL;
+			GVariant* parameters;
+			gsize n_parameters;
+
+			parameters = g_value_get_variant(value);
+
+			if(parameters == NULL)
+				return;
+
+			n_parameters = g_variant_n_children(parameters);
+			if(n_parameters == 0)
+				return;
+
+			g_variant_get_child(parameters, 0, "v", &v);
+
+			if(!g_variant_is_of_type(v, G_VARIANT_TYPE_DICTIONARY))
+				g_warning("Wrong type for the first argument GVariant, expected 'a{sv}' but got '%s'",
+				          (gchar*) g_variant_get_type(v));
+			else if(g_variant_n_children(v) > 0)
+				g_warning("Ignoring additional flags");
+
+			if(n_parameters > 1)
+				g_warning("Ignoring additional parameters");
+
+			break;
+		}
+
+		case PROP_TITLE:
+			priv->title = g_value_dup_string(value);
+			break;
+
+		case PROP_FOLDED:
+		default:
+			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+			break;
+	}
+}
+
+/*
+ * @Override from GObject
+ */
+static void
+panel_get_property(GObject* object, guint prop_id, GValue* value, GParamSpec* pspec)
+{
+	PanelPrivate* priv = panel_get_instance_private(GINPUT_PANEL(object));
+
+	switch(prop_id)
+	{
+		case PROP_FOLDED:
+			g_value_set_boolean(value, priv->folded);
+			break;
+
+		case PROP_TITLE:
+			g_value_set_string(value, priv->title);
+			break;
+
+		default:
+			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+			break;
+	}
+}
+
+/*
+ * @Override from GObject
+ */
+static void
+panel_finalize(GObject* object)
+{
+	PanelPrivate* priv = panel_get_instance_private(GINPUT_PANEL(object));
+
+	g_cancellable_cancel(priv->cancellable);
+	g_clear_object(&priv->cancellable);
+
+	g_clear_pointer(&priv->title, g_free);
+
+	G_OBJECT_CLASS(panel_parent_class)->finalize(object);
+}
+
+static void
+panel_class_init(PanelClass* klass)
+{
+	GObjectClass* object_class = G_OBJECT_CLASS(klass);
+	GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
+
+	object_class->get_property = panel_get_property;
+	object_class->set_property = panel_set_property;
+	object_class->finalize = panel_finalize;
+
+	//   signals[SIDEBAR_ACTIVATED] = g_signal_new ("sidebar-activated",
+	//                                              G_TYPE_FROM_CLASS (object_class),
+	//                                              G_SIGNAL_RUN_LAST,
+	//                                              0, NULL, NULL,
+	//                                              g_cclosure_marshal_VOID__VOID,
+	//                                              G_TYPE_NONE, 0);
+
+	properties[PROP_FOLDED] = g_param_spec_boolean("folded", NULL, NULL,
+	                                               FALSE,
+	                                               G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+
+	properties[PROP_PARAMETERS] = g_param_spec_variant("parameters",
+	                                                   "Structured parameters",
+	                                                   "Additional parameters passed externally (ie. command line, D-Bus activation)",
+	                                                   G_VARIANT_TYPE("av"),
+	                                                   NULL,
+	                                                   G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS);
+
+	properties[PROP_TITLE] = g_param_spec_string("title", NULL, NULL, NULL,
+	                                             G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+	g_object_class_install_properties(object_class, N_PROPS, properties);
+
+	gtk_widget_class_set_template_from_resource(widget_class, "/v/ginput/panel.ui");
+
+	gtk_widget_class_bind_template_child_private(widget_class, Panel, content_bin);
+	gtk_widget_class_bind_template_child_private(widget_class, Panel, main_box);
+	gtk_widget_class_bind_template_child_private(widget_class, Panel, titlebar_bin);
+	gtk_widget_class_bind_template_child_private(widget_class, Panel, titlebar);
+}
+
+static void
+panel_init(Panel* panel)
+{
+	gtk_widget_init_template(GTK_WIDGET(panel));
+}
--- a/src/ui/panel.h
+++ b/src/ui/panel.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <adwaita.h>
+
+G_DECLARE_DERIVABLE_TYPE(Panel, panel, GINPUT, PANEL, AdwBin)
+
+G_BEGIN_DECLS
+
+/**
+ * PanelClass:
+ *
+ * The contents of this struct are private and should not be accessed directly.
+ */
+struct _PanelClass
+{
+	/*< private >*/
+	AdwBinClass parent_class;
+
+	const gchar* (*get_help_uri)(Panel* panel);
+
+	GtkWidget* (*get_sidebar_widget)(Panel* panel);
+};
+
+GPermission* panel_get_permission(Panel* panel);
+
+const gchar* panel_get_help_uri(Panel* panel);
+
+GtkWidget* panel_get_sidebar_widget(Panel* panel);
+
+GCancellable* panel_get_cancellable(Panel* panel);
+
+gboolean panel_get_folded(Panel* panel);
+
+GtkWidget* panel_get_content(Panel* panel);
+
+void panel_set_content(Panel* panel, GtkWidget* content);
+
+GtkWidget* panel_get_titlebar(Panel* panel);
+
+void panel_set_titlebar(Panel* panel, GtkWidget* titlebar);
+
+void panel_deactivate(Panel* panel);
+
+G_END_DECLS
--- a/src/ui/panels/empty_panel.c
+++ b/src/ui/panels/empty_panel.c
@@ -0,0 +1,30 @@
+#include "empty_panel.h"
+
+struct _EmptyPanel
+{
+	Panel parent_instance;
+};
+
+G_DEFINE_TYPE (EmptyPanel, empty_panel, panel_get_type())
+
+static void
+empty_panel_class_init(EmptyPanelClass* klass)
+{
+	GObjectClass* object_class = G_OBJECT_CLASS(klass);
+	GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
+	PanelClass* panel_class = GINPUT_PANEL_CLASS(klass);
+
+	gtk_widget_class_set_template_from_resource(widget_class, "/v/ginput/panel-empty.ui");
+}
+
+static void
+empty_panel_init(EmptyPanel* self)
+{
+	gtk_widget_init_template(GTK_WIDGET(self));
+}
+
+Panel*
+empty_panel_new(void)
+{
+    return g_object_new(empty_panel_get_type(), NULL);
+}
--- a/src/ui/panels/empty_panel.h
+++ b/src/ui/panels/empty_panel.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "ui/panel.h"
+
+G_BEGIN_DECLS
+
+G_DECLARE_FINAL_TYPE(EmptyPanel, empty_panel, GINPUT, EMPTY_PANEL, Panel)
+
+G_END_DECLS
+
+Panel* empty_panel_new(void);
--- a/ui/ginput.cmb
+++ b/ui/ginput.cmb
@@ -0,0 +1,74 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<!DOCTYPE cambalache-project SYSTEM "cambalache-project.dtd">
+<cambalache-project version="0.12.0" target_tk="gtk-4.0">
+  <ui>
+	(1,1,"gkeyboards.ui","main-window.ui",None,None,None,None,None,None,"  &lt;menu id=\"primary_menu\"&gt;\n    &lt;section&gt;\n      &lt;item&gt;\n        &lt;attribute name=\"label\" translatable=\"yes\"&gt;About&lt;/attribute&gt;\n        &lt;attribute name=\"action\"&gt;app.about&lt;/attribute&gt;\n      &lt;/item&gt;\n    &lt;/section&gt;\n  &lt;/menu&gt;\n"),
+	(2,1,None,"panel.ui",None,None,None,None,None,None,None),
+	(3,None,None,"panel-empty.ui",None,None,None,None,None,None,"&lt;template class=\"EmptyPanel\" parent=\"Panel\"&gt;\n	&lt;child type=\"content\"&gt;\n			&lt;object class=\"GtkLabel\"&gt;\n				&lt;property name=\"label\"&gt;Nothing to see here&lt;/property&gt;\n			&lt;/object&gt;\n	&lt;/child&gt;\n&lt;/template&gt;")
+  </ui>
+  <object>
+	(1,1,"AdwApplicationWindow","MainWindow",None,None,None,None,None,None),
+	(1,2,"AdwLeaflet","main_leaflet",1,None,None,None,-1,None),
+	(1,3,"GtkBox","sidebar_box",2,None,None,None,None,None),
+	(1,4,"AdwHeaderBar","header",3,None,None,None,None,None),
+	(1,5,"AdwWindowTitle","sidebar_title_widget",4,None,None,None,None,None),
+	(1,6,"GtkMenuButton",None,4,None,"end",None,None,"&lt;property name=\"menu-model\"&gt;primary_menu&lt;/property&gt;"),
+	(1,7,"AdwLeafletPage",None,2,None,None,None,1,None),
+	(1,8,"GtkSeparator",None,7,None,None,None,None,None),
+	(1,9,"GtkBox","panel_box",2,None,None,None,2,None),
+	(1,10,"GtkStack","stack",9,None,None,None,None,None),
+	(1,11,"GtkScrolledWindow",None,3,None,None,None,1,None),
+	(1,12,"GtkViewport",None,11,None,None,None,None,None),
+	(2,1,"AdwBin","Panel",None,None,None,None,None,None),
+	(2,11,"GtkBox","main_box",1,None,None,None,None,None),
+	(2,12,"AdwBin","content_bin",11,None,None,None,1,None),
+	(2,13,"AdwBin","titlebar_bin",11,None,None,None,None,None),
+	(2,15,"AdwHeaderBar","titlebar",13,None,None,None,None,None),
+	(2,16,"AdwWindowTitle","title",15,None,None,None,None,None)
+  </object>
+  <object_property>
+	(1,1,"GtkWindow","default-height","980",None,None,None,None,None,None,None,None,None),
+	(1,1,"GtkWindow","default-width","640",None,None,None,None,None,None,None,None,None),
+	(1,3,"GtkOrientable","orientation","vertical",None,None,None,None,None,None,None,None,None),
+	(1,4,"AdwHeaderBar","show-end-title-buttons","False",None,None,None,None,None,None,None,None,None),
+	(1,4,"AdwHeaderBar","title-widget",None,None,None,None,None,5,None,None,None,None),
+	(1,5,"AdwWindowTitle","title","Input devices",None,None,None,None,None,None,None,None,None),
+	(1,6,"GtkMenuButton","icon-name","open-menu-symbolic",None,None,None,None,None,None,None,None,None),
+	(1,6,"GtkMenuButton","primary","True",None,None,None,None,None,None,None,None,None),
+	(1,7,"AdwLeafletPage","child",None,None,None,None,None,8,None,None,None,None),
+	(1,7,"AdwLeafletPage","navigatable","False",None,None,None,None,None,None,None,None,None),
+	(1,8,"GtkOrientable","orientation","vertical",None,None,None,None,None,None,None,None,None),
+	(1,9,"GtkOrientable","orientation","vertical",None,None,None,None,None,None,None,None,None),
+	(1,9,"GtkWidget","hexpand","True",None,None,None,None,None,None,None,None,None),
+	(1,9,"GtkWidget","vexpand","True",None,None,None,None,None,None,None,None,None),
+	(1,10,"GtkStack","transition-type","crossfade",None,None,None,None,None,None,None,None,None),
+	(1,10,"GtkWidget","hexpand","True",None,None,None,None,None,None,None,None,None),
+	(1,10,"GtkWidget","vexpand","True",None,None,None,None,None,None,None,None,None),
+	(1,10,"GtkWidget","width-request","360",None,None,None,None,None,None,None,None,None),
+	(1,11,"GtkScrolledWindow","child",None,None,None,None,None,12,None,None,None,None),
+	(1,11,"GtkScrolledWindow","hscrollbar-policy","never",None,None,None,None,None,None,None,None,None),
+	(1,11,"GtkWidget","vexpand","True",None,None,None,None,None,None,None,None,None),
+	(1,11,"GtkWidget","width-request","200",None,None,None,None,None,None,None,None,None),
+	(2,11,"GtkOrientable","orientation","vertical",None,None,None,None,None,None,None,None,None),
+	(2,11,"GtkWidget","hexpand","True",None,None,None,None,None,None,None,None,None),
+	(2,11,"GtkWidget","vexpand","True",None,None,None,None,None,None,None,None,None),
+	(2,12,"GtkWidget","hexpand","True",None,None,None,None,None,None,None,None,None),
+	(2,12,"GtkWidget","vexpand","True",None,None,None,None,None,None,None,None,None),
+	(2,13,"GtkWidget","hexpand","True",None,None,None,None,None,None,None,None,None),
+	(2,15,"AdwHeaderBar","show-start-title-buttons","False",None,None,None,None,None,None,None,None,None),
+	(2,15,"AdwHeaderBar","title-widget",None,None,None,None,None,16,None,None,None,None)
+  </object_property>
+  <object_data>
+	(1,6,"GtkWidget",1,1,None,None,None),
+	(1,10,"GtkWidget",1,1,None,None,None),
+	(1,10,"GtkWidget",2,2,None,1,None),
+	(1,8,"GtkWidget",1,1,None,None,None),
+	(1,8,"GtkWidget",2,2,None,1,None),
+	(1,6,"GtkWidget",2,2,None,1,None)
+  </object_data>
+  <object_data_arg>
+	(1,10,"GtkWidget",2,2,"name","background"),
+	(1,8,"GtkWidget",2,2,"name","sidebar"),
+	(1,6,"GtkWidget",2,2,"name","image-button")
+  </object_data_arg>
+</cambalache-project>
--- a/ui/ginput.gresource.xml
+++ b/ui/ginput.gresource.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/v/ginput/">
+    <file preprocess="xml-stripblanks">main-window.ui</file>
+    <file preprocess="xml-stripblanks">panel.ui</file>
+    <file preprocess="xml-stripblanks">panel-empty.ui</file>
+    <file>style.css</file>
+  </gresource>
+</gresources>
--- a/ui/style.css
+++ b/ui/style.css
@@ -0,0 +1 @@
+/* The style file for the ginput UI */
--- a/v.ginput.gschema.xml
+++ b/v.ginput.gschema.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<schemalist>
+    <schema path="/v/ginput/" id="v.ginput">
+        <key name="window-state" type="(iib)">
+            <default>(980, 640, false)</default>
+            <summary>Window state</summary>
+            <description>Width, height, and folded values of the window</description>
+        </key>
+    </schema>
+</schemalist>