From ec0a7bac9d80b4ac094e361535f1ce4a5f5c6487 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Sun, 26 May 2019 22:28:23 +0200
Subject: Dummy fixture and initial rendering

---
 src/nanolight.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 src/nanolight.h |  6 ++--
 2 files changed, 91 insertions(+), 4 deletions(-)

diff --git a/src/nanolight.c b/src/nanolight.c
index 94ae685..4c657df 100644
--- a/src/nanolight.c
+++ b/src/nanolight.c
@@ -32,6 +32,8 @@
 #include <libintl.h>
 #define _(x) gettext(x)
 
+#include "nanolight.h"
+
 static void show_help(const char *s)
 {
 	printf(_("Syntax: %s [options]\n\n"), s);
@@ -39,17 +41,74 @@ static void show_help(const char *s)
 	         "  -h, --help    Display this help message.\n"));
 }
 
+#define OVERALL_BORDER (20.0)
+#define OVERALL_SPLIT (0.5)
+
+static void draw_fixture(cairo_t *cr, PangoContext *pc, PangoFontDescription *fontdesc,
+                         struct nanolight *nl, struct fixture *fx)
+{
+	PangoLayout *layout;
+	const double w = nl->fixture_width;
+
+	cairo_rectangle(cr, 0.5, 0.5, w, 3.0/2.0*w);
+	cairo_set_source_rgb(cr, 0.3, 0.3, 0.3);
+	cairo_fill_preserve(cr);
+	cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
+	cairo_set_line_width(cr, 1.0);
+	cairo_stroke(cr);
+
+	layout = pango_layout_new(pc);
+	pango_layout_set_text(layout, fx->label, -1);
+	pango_layout_set_width(layout, w*PANGO_SCALE);
+	pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
+	pango_layout_set_font_description(layout, fontdesc);
+	cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
+	pango_cairo_show_layout(cr, layout);
+}
+
 
-static gboolean draw_sig(GtkWidget *widget, cairo_t *cr, gpointer data)
+static gboolean draw_sig(GtkWidget *widget, cairo_t *cr, struct nanolight *nl)
 {
+	int w, h;
+	int i;
+	PangoContext *pc;
+	PangoFontDescription *fontdesc;
+
+	w = gtk_widget_get_allocated_width(widget);
+	h = gtk_widget_get_allocated_height(widget);
+	pc = gtk_widget_get_pango_context(widget);
+	fontdesc = pango_font_description_from_string("Comfortaa Bold 14");
+
+	/* Overall background */
 	cairo_set_source_rgb(cr, 0.0, 0.0, 0.2);
 	cairo_paint(cr);
+
+	/* Separator between fixture and cue areas */
+	cairo_move_to(cr, w*OVERALL_SPLIT, OVERALL_BORDER);
+	cairo_line_to(cr, w*OVERALL_SPLIT, h - OVERALL_BORDER);
+	cairo_set_line_width(cr, 3.0);
+	cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
+	cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
+	cairo_stroke(cr);
+
+	/* Fixtures */
+	cairo_translate(cr, OVERALL_BORDER, OVERALL_BORDER);
+	for ( i=0; i<nl->n_fixtures; i++ ) {
+		draw_fixture(cr, pc, fontdesc, nl, &nl->fixtures[i]);
+	}
+
+	/* Command line */
+
 	return FALSE;
 }
 
 
 int main(int argc, char *argv[])
 {
+	struct nanolight nl;
+	struct fixture fix;
+	struct fixture_class cls;
+	struct attribute attrs[3];
 	int c;
 	GtkWidget *mainwindow;
 	GtkWidget *da;
@@ -85,13 +144,39 @@ int main(int argc, char *argv[])
 	bindtextdomain("nanolight", LOCALEDIR);
 	textdomain("nanolight");
 
+	cls.name = "Dummy fixture";
+	cls.n_attrs = 3;
+	cls.attrs = attrs;
+
+	cls.attrs[0].name = "Intensity";
+	cls.attrs[0].cls = ATT_INTENSITY;
+	cls.attrs[0].props = 0;
+	cls.attrs[0].addr_offset = 50;
+
+	cls.attrs[1].name = "Pan";
+	cls.attrs[1].cls = ATT_PAN;
+	cls.attrs[1].props = ATTR_16BIT;
+	cls.attrs[1].addr_offset = 0;
+
+	cls.attrs[2].name = "Tilt";
+	cls.attrs[2].cls = ATT_TILT;
+	cls.attrs[2].props = ATTR_16BIT;
+	cls.attrs[2].addr_offset = 2;
+
+	nl.n_fixtures = 1;
+	nl.fixtures = &fix;
+	fix.label = "mh1";
+	fix.cls = &cls;
+
+	nl.fixture_width = 80.0;
+
 	mainwindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 	gtk_window_fullscreen(GTK_WINDOW(mainwindow));
 	g_signal_connect_swapped(G_OBJECT(mainwindow), "destroy", gtk_main_quit, NULL);
 
 	da = gtk_drawing_area_new();
 	gtk_container_add(GTK_CONTAINER(mainwindow), GTK_WIDGET(da));
-	g_signal_connect(G_OBJECT(da), "draw", G_CALLBACK(draw_sig), NULL);
+	g_signal_connect(G_OBJECT(da), "draw", G_CALLBACK(draw_sig), &nl);
 
 	gtk_widget_show_all(mainwindow);
 	gtk_main();
diff --git a/src/nanolight.h b/src/nanolight.h
index 4ab4d5a..5235666 100644
--- a/src/nanolight.h
+++ b/src/nanolight.h
@@ -40,8 +40,7 @@ struct attribute
 	char *name;
 	enum attr_class cls;
 	int props;
-	int n_addrs;
-	int *addrs;
+	int addr_offset;
 };
 
 
@@ -56,6 +55,7 @@ struct fixture_class
 struct fixture
 {
 	char *label;
+	int base_addr;
 	struct fixture_class *cls;
 };
 
@@ -64,6 +64,8 @@ struct nanolight
 {
 	int n_fixtures;
 	struct fixture *fixtures;
+
+	double fixture_width;
 };
 
 
-- 
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