prototype of tinycurses

1 files changed, 44 insertions, 0 deletions

diff --git a/sys/libterm/window.c b/sys/libterm/window.c
new file mode 100644
index 0000000..fec3997
--- /dev/null
+++ b/sys/libterm/window.c
@@ -0,0 +1,44 @@
+#include <u.h>
+#include <libn.h>
+
+#include "term.h"
+
+typedef struct Rect   Rect;
+
+struct Rect
+{
+    int top, left, rows, cols;
+};
+
+struct Window
+{
+    Buffer  buffer[2], *buf;
+    Rect    area;         /* on screen */
+    Pen     pen, spen;    /* current and saved pen */
+    uint    curvis : 1;
+    uint    damage : 1;
+};
+
+/* functions */
+
+Window *
+makewindow(Window *root, Rect area, int history)
+{
+    Window *w;
+    w = calloc(1, sizeof(*w));
+    if (!w)
+        panicf("out of memory");
+
+	w->pen = (Pen) {
+        .state = PenNormal,
+        .col   = {-1, -1}, 
+    };
+
+	if (!binit(w->buffer+0, area.rows, area.cols, history) ||
+	    !binit(w->buffer+1, area.rows, area.cols, 0)) {
+		free(w);
+		return nil;
+	}
+	w->buf = w->buffer;
+    return w;
+}