From dec2f0fe3ea9e3e95d6fc6abc421f1a81149c10c Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sun, 27 Apr 2025 11:07:55 -0400
Subject: init compressor-select widget

---
 main.c   |  4 +++-
 ui.c     |  4 +++-
 widget.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 widget.h | 21 +++++++++++++++++++++
 4 files changed, 81 insertions(+), 2 deletions(-)

diff --git a/main.c b/main.c
index a18f08f..74c4f84 100644
--- a/main.c
+++ b/main.c
@@ -1,12 +1,14 @@
 /* Headers. */
 
+#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "microui.h"
 #include "renderer.h"
-#include "widget.h"
 #include "unit.h"
+#include "compressor.h"
+#include "widget.h"
 #include "engine.h"
 #include "ui.h"
 
diff --git a/ui.c b/ui.c
index a28a169..cb65da7 100644
--- a/ui.c
+++ b/ui.c
@@ -1,9 +1,11 @@
 #include <assert.h>
+#include <limits.h>
 #include <string.h>
 
 #include "microui.h"
-#include "widget.h"
 #include "unit.h"
+#include "compressor.h"
+#include "widget.h"
 #include "engine.h"
 #include "ui.h"
 
diff --git a/widget.c b/widget.c
index 670d91d..4fcb137 100644
--- a/widget.c
+++ b/widget.c
@@ -1,7 +1,11 @@
+#include <limits.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "microui.h"
+#include "unit.h"
+#include "compressor.h"
 #include "widget.h"
 #include "util.h"
 
@@ -106,6 +110,56 @@ w_select(mu_Context *ctx, w_Select *select) {
 	return res;
 }
 
+/* Returns non-zero on error. */
+int
+w_init_select_compressor(w_Select_Compressor *select, int n, const Compressor *comps) {
+	int i;
+	size_t namesize;
+
+	select->comps = comps;
+	select->n = n;
+
+	select->filtered = malloc(n * sizeof(*select->filtered));
+	if (select->filtered == NULL) {
+		return 1;
+	}
+	/* TODO: parallelize. */
+	for (i = 0; i < n; i++) {
+		select->filtered[i] = i;
+	}
+	select->nfiltered = n;
+
+	namesize = sizeof((*comps).brand) + sizeof((*comps).series) + sizeof((*comps).model) + 3;
+	select->names = malloc(n * namesize);
+	if (select->names == NULL) {
+		free(select->filtered);
+		return 1;
+	}
+	/* TODO: parallelize. */
+	for (i = 0; i < n; i++) {
+		snprintf(select->names[i], namesize, "%s %s %s",
+			comps[i].brand, comps[i].series, comps[i].model);
+	}
+
+	select->idx = 0;
+	select -> oldidx = 0;
+
+	select->active = 0;
+
+	return 0;
+}
+
+void
+w_free_select_compressor(w_Select_Compressor *select) {
+	free(select->filtered);
+	free(select->names);
+}
+
+int
+w_select_compressor(mu_Context *ctx, w_Select_Compressor *select) {
+	/* TODO */
+}
+
 void
 w_init_number(w_Number num) {
 	num[0] = '\0';
diff --git a/widget.h b/widget.h
index 1237e29..34e6edf 100644
--- a/widget.h
+++ b/widget.h
@@ -1,6 +1,7 @@
 enum {
 	FIELD_SIZE = 64,
 	NUMBER_SIZE = 128,
+	NAME_SIZE = 256,
 };
 
 
@@ -28,6 +29,26 @@ void w_init_select(w_Select *select, int nopts, const char *const opts[]);
 int w_select(mu_Context *ctx, w_Select *select);
 
 
+typedef struct {
+	const Compressor *comps;
+	int n; /* len(comps) */
+
+	int *filtered; /* indices of compressors accepted by the filter. */
+	int nfiltered; /* len(filtered) */
+
+	char **names; /* buffer to hold names of compressors. */
+
+	int idx; /* index of selected in filtered. */
+	int oldidx; /* index of previously selected. */
+
+	int active;
+} w_Select_Compressor;
+
+int w_init_select_compressor(w_Select_Compressor *select, int n, const Compressor *const comps);
+void w_free_select_compressor(w_Select_Compressor *select);
+int w_select_compressor(mu_Context *ctx, w_Select_Compressor *select);
+
+
 typedef char w_Number[NUMBER_SIZE];
 
 void w_init_number(w_Number num);
-- 
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