sysprof: drop libsysprof-gtk and absorb it in sysprof

We are dropping the whole "embed this gtk stuff in your app" model since
that never really worked that well.

src/sysprof/sysprof-xy-layer.h

@@ -0,0 +1,59 @@
+/* sysprof-xy-layer.h
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <sysprof-analyze.h>
+
+#include "sysprof-axis.h"
+#include "sysprof-chart-layer.h"
+#include "sysprof-xy-series.h"
+
+G_BEGIN_DECLS
+
+#define SYSPROF_TYPE_XY_LAYER (sysprof_xy_layer_get_type())
+
+SYSPROF_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (SysprofXYLayer, sysprof_xy_layer, SYSPROF, XY_LAYER, SysprofChartLayer)
+
+SYSPROF_AVAILABLE_IN_ALL
+SysprofChartLayer *sysprof_xy_layer_new        (void);
+SYSPROF_AVAILABLE_IN_ALL
+gboolean           sysprof_xy_layer_get_flip_y (SysprofXYLayer  *self);
+SYSPROF_AVAILABLE_IN_ALL
+void               sysprof_xy_layer_set_flip_y (SysprofXYLayer  *self,
+                                                gboolean         flip_y);
+SYSPROF_AVAILABLE_IN_ALL
+SysprofXYSeries   *sysprof_xy_layer_get_series (SysprofXYLayer  *self);
+SYSPROF_AVAILABLE_IN_ALL
+void               sysprof_xy_layer_set_series (SysprofXYLayer  *self,
+                                                SysprofXYSeries *series);
+SYSPROF_AVAILABLE_IN_ALL
+SysprofAxis       *sysprof_xy_layer_get_x_axis (SysprofXYLayer  *self);
+SYSPROF_AVAILABLE_IN_ALL
+void               sysprof_xy_layer_set_x_axis (SysprofXYLayer  *self,
+                                                SysprofAxis     *x_axis);
+SYSPROF_AVAILABLE_IN_ALL
+SysprofAxis       *sysprof_xy_layer_get_y_axis (SysprofXYLayer  *self);
+SYSPROF_AVAILABLE_IN_ALL
+void               sysprof_xy_layer_set_y_axis (SysprofXYLayer  *self,
+                                                SysprofAxis     *y_axis);
+
+G_END_DECLS