From eb5fe234f4424774f2146b867811b8dbacf8c091 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 21 Oct 2017 10:04:56 +0530
Subject: [PATCH] API to easily render a Screen object from python

---
 kitty/child-monitor.c | 26 +++++++++++++++++++++++++-
 kitty/data-types.c    |  4 ++--
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/kitty/child-monitor.c b/kitty/child-monitor.c
index 7a51e52d3..a1de8ffef 100644
--- a/kitty/child-monitor.c
+++ b/kitty/child-monitor.c
@@ -496,6 +496,18 @@ update_window_title(Window *w) {
     }
 }
 
+static PyObject*
+simple_render_screen(PyObject UNUSED *self, PyObject *args) {
+#define simple_render_screen_doc "Render a Screen object, with no cursor"
+    Screen *screen; 
+    ssize_t vao_idx, gvao_idx;
+    float xstart, ystart, dx, dy;
+    if (!PyArg_ParseTuple(args, "O!nnffff", &Screen_Type, &screen, &vao_idx, &gvao_idx, &xstart, &ystart, &dx, &dy)) return NULL;
+    static CursorRenderInfo cursor_info = {0};
+    draw_cells(vao_idx, gvao_idx, xstart, ystart, dx, dy, screen, &cursor_info);
+    Py_RETURN_NONE;
+}
+
 static inline void
 render(double now) {
     double time_since_last_render = now - last_render_at;
@@ -882,7 +894,19 @@ PyTypeObject ChildMonitor_Type = {
     .tp_new = new,                
 };
 
+static PyMethodDef module_methods[] = {
+    METHOD(simple_render_screen, METH_VARARGS)
+    {NULL}  /* Sentinel */
+};
+
+bool
+init_child_monitor(PyObject *module) {
+    if (PyType_Ready(&ChildMonitor_Type) < 0) return false;
+    if (PyModule_AddObject(module, "ChildMonitor", (PyObject *)&ChildMonitor_Type) != 0) return false;
+    Py_INCREF(&ChildMonitor_Type); 
+    if (PyModule_AddFunctions(module, module_methods) != 0) return false;
+    return true;
+}
 
-INIT_TYPE(ChildMonitor)
 // }}}
 
diff --git a/kitty/data-types.c b/kitty/data-types.c
index 2bc538c09..0648acfaf 100644
--- a/kitty/data-types.c
+++ b/kitty/data-types.c
@@ -125,7 +125,7 @@ static struct PyModuleDef module = {
 extern int init_LineBuf(PyObject *);
 extern int init_HistoryBuf(PyObject *);
 extern int init_Cursor(PyObject *);
-extern int init_ChildMonitor(PyObject *);
+extern bool init_child_monitor(PyObject *);
 extern int init_Line(PyObject *);
 extern int init_ColorProfile(PyObject *);
 extern int init_Screen(PyObject *);
@@ -160,7 +160,7 @@ PyInit_fast_data_types(void) {
         if (!init_HistoryBuf(m)) return NULL;
         if (!init_Line(m)) return NULL;
         if (!init_Cursor(m)) return NULL;
-        if (!init_ChildMonitor(m)) return NULL;
+        if (!init_child_monitor(m)) return NULL;
         if (!init_ColorProfile(m)) return NULL;
         if (!init_Screen(m)) return NULL;
         if (!init_glfw(m)) return NULL;