From 71a127463aeceb7906a6a6a1980dcde179834cc9 Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Wed, 27 Nov 2019 21:29:28 -0500
Subject: [PATCH] ncplane_create()

---
 src/demo/widecolor.c |  4 ++--
 src/lib/notcurses.c  | 35 ++++++++++++++++++++++++++++-------
 2 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/src/demo/widecolor.c b/src/demo/widecolor.c
index 1d869219e..24a022ace 100644
--- a/src/demo/widecolor.c
+++ b/src/demo/widecolor.c
@@ -11,7 +11,7 @@ int widecolor_demo(struct notcurses* nc){
     "Война и мир",
     "Бра́тья Карама́зовы",
     "Час сэканд-хэнд",
-    "ஸீரோ டிகிரி",
+    //"ஸீரோ டிகிரி",
     "Tonio Kröger",
     /*"بين القصرين",
     "قصر الشوق",
@@ -259,7 +259,7 @@ int widecolor_demo(struct notcurses* nc){
         }
       }while(y < maxy && x < maxx);
       ncplane_fg_rgb8(n, 255, 255, 255);
-      // ncplane_set_style(n, WA_BOLD);
+      ncplane_set_style(n, WA_BOLD);
       ncplane_cursor_move_yx(n, 2, 2);
       ncplane_printf(n, " %dx%d (%d/%d) ", maxx, maxy, i, sizeof(steps) / sizeof(*steps));
       ncplane_cursor_move_yx(n, 3, 2);
diff --git a/src/lib/notcurses.c b/src/lib/notcurses.c
index 50063d796..40b4b6b61 100644
--- a/src/lib/notcurses.c
+++ b/src/lib/notcurses.c
@@ -42,6 +42,7 @@ typedef struct ncplane {
   egcpool pool;         // attached storage pool for UTF-8 EGCs
   uint64_t channels;    // works the same way as cells
   uint32_t attrword;    // same deal as in a cell
+  void* userptr;        // slot for the user to stick some opaque pointer
 } ncplane;
 
 typedef struct ncstats {
@@ -253,14 +254,8 @@ term_emit(const char* seq, FILE* out, bool flush){
   return 0;
 }
 
-// create an ncplane of the specified dimensions, but do not yet place it in
-// the z-buffer. clear out all cells. this is for a wholly new context.
 static ncplane*
-create_initial_ncplane(notcurses* nc){
-  int rows, cols;
-  if(update_term_dimensions(nc, &rows, &cols)){
-    return NULL;
-  }
+ncplane_create(notcurses* nc, int rows, int cols){
   ncplane* p = malloc(sizeof(*p));
   size_t fbsize = sizeof(*p->fb) * (rows * cols);
   if((p->fb = malloc(fbsize)) == NULL){
@@ -278,6 +273,17 @@ create_initial_ncplane(notcurses* nc){
   return p;
 }
 
+// create an ncplane of the specified dimensions, but do not yet place it in
+// the z-buffer. clear out all cells. this is for a wholly new context.
+static ncplane*
+create_initial_ncplane(notcurses* nc){
+  int rows, cols;
+  if(update_term_dimensions(nc, &rows, &cols)){
+    return NULL;
+  }
+  return ncplane_create(nc, rows, cols);
+}
+
 // Call this when the screen size changes. Takes a flat
 // array of *rows * *cols cells (may be NULL if *rows == *cols == 0). Gets the
 // new size, and copies what can be copied from the old stdscr. Assumes that
@@ -327,6 +333,21 @@ const ncplane* notcurses_stdplane_const(const notcurses* nc){
   return nc->stdscr;
 }
 
+ncplane* notcurses_newplane(notcurses* nc, int rows, int cols,
+                            int yoff, int xoff, void* opaque){
+  if(rows <= 0 || cols <= 0){
+    return NULL;
+  }
+  ncplane* n = create_initial_ncplane(nc);
+  if(n == NULL){
+    return n;
+  }
+  n->absx = xoff;
+  n->absy = yoff;
+  n->userptr = opaque;
+  return n;
+}
+
 int ncplane_destroy(notcurses* nc, ncplane* ncp){
   if(ncp){
     if(nc->stdscr == ncp){