GUI: FoM graph, part 1: Skeleton widget code

1 files changed, 128 insertions, 0 deletions

diff --git a/src/crystfelfomgraph.c b/src/crystfelfomgraph.c
new file mode 100644
index 00000000..c3d679fa
--- /dev/null
+++ b/src/crystfelfomgraph.c
@@ -0,0 +1,128 @@
+/*
+ * crystfelfomgraph.c
+ *
+ * Figure of merit graph plot widget
+ *
+ * Copyright © 2020-2022 Deutsches Elektronen-Synchrotron DESY,
+ *                       a research centre of the Helmholtz Association.
+ *
+ * Authors:
+ *  2020-2022 Thomas White <taw@physics.org>
+ *
+ * This file is part of CrystFEL.
+ *
+ * CrystFEL 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.
+ *
+ * CrystFEL 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 CrystFEL.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <gtk/gtk.h>
+#include <glib-object.h>
+
+#include "crystfelfomgraph.h"
+
+
+G_DEFINE_TYPE(CrystFELFoMGraph, crystfel_fom_graph,
+              GTK_TYPE_DRAWING_AREA)
+
+static gint destroy_sig(GtkWidget *window, CrystFELFoMGraph *fg)
+{
+	return FALSE;
+}
+
+
+static gint configure_sig(GtkWidget *window, GdkEventConfigure *rec,
+                          CrystFELFoMGraph *fg)
+{
+	fg->visible_width = rec->width;
+	fg->visible_height = rec->height;
+	return FALSE;
+}
+
+
+static gint draw_sig(GtkWidget *window, cairo_t *cr, CrystFELFoMGraph *fg)
+{
+	cairo_save(cr);
+
+	/* Overall background */
+	cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
+	cairo_paint(cr);
+
+
+	cairo_restore(cr);
+
+	return FALSE;
+}
+
+
+static GtkSizeRequestMode get_request_mode(GtkWidget *widget)
+{
+	return GTK_SIZE_REQUEST_CONSTANT_SIZE;
+}
+
+
+static void get_preferred_width(GtkWidget *widget, gint *min, gint *natural)
+{
+	*min = 0;
+	*natural = 480;
+}
+
+
+static void get_preferred_height(GtkWidget *widget, gint *min, gint *natural)
+{
+	*min = 0;
+	*natural = 320;
+}
+
+
+static void crystfel_fom_graph_class_init(CrystFELFoMGraphClass *klass)
+{
+	GTK_WIDGET_CLASS(klass)->get_request_mode = get_request_mode;
+	GTK_WIDGET_CLASS(klass)->get_preferred_width = get_preferred_width;
+	GTK_WIDGET_CLASS(klass)->get_preferred_height = get_preferred_height;
+	GTK_WIDGET_CLASS(klass)->get_preferred_height_for_width = NULL;
+}
+
+
+static void crystfel_fom_graph_init(CrystFELFoMGraph *fg)
+{
+}
+
+
+GtkWidget *crystfel_fom_graph_new()
+{
+	CrystFELFoMGraph *fg;
+
+	fg = g_object_new(CRYSTFEL_TYPE_FOM_GRAPH, NULL);
+
+	g_signal_connect(G_OBJECT(fg), "destroy",
+	                 G_CALLBACK(destroy_sig), fg);
+	g_signal_connect(G_OBJECT(fg), "configure-event",
+	                 G_CALLBACK(configure_sig), fg);
+	g_signal_connect(G_OBJECT(fg), "draw",
+	                 G_CALLBACK(draw_sig), fg);
+
+	gtk_widget_set_can_focus(GTK_WIDGET(fg), FALSE);
+
+	gtk_widget_show(GTK_WIDGET(fg));
+
+	return GTK_WIDGET(fg);
+}