From de2fa7938758ff83cabf06baf4c0ac7a230e78bf Mon Sep 17 00:00:00 2001
From: sanine-a <sanine.not@pm.me>
Date: Sat, 24 Oct 2020 22:09:34 -0500
Subject: add more window functions and clean up window info access

---
 src/window/window.c | 78 ++++++++++++++++++++++++++++++++++++++++++++---------
 src/window/window.h | 25 +++++++++++++++++
 2 files changed, 91 insertions(+), 12 deletions(-)

(limited to 'src/window')

diff --git a/src/window/window.c b/src/window/window.c
index bb371cd..ff04b5a 100644
--- a/src/window/window.c
+++ b/src/window/window.c
@@ -1,19 +1,25 @@
 #include "window.h"
 
+int honey_window_info_ref = LUA_NOREF;
+
 bool honey_setup_window(lua_State* L)
 {
-    honey_window_information* info = malloc(sizeof(honey_window_information));
-    if (info == NULL) {
-        fprintf(stderr, "[honey] ERROR: failed to allocate memory for window information!\n");
-        return false;
-    }
+    honey_window_information* info = lua_newuserdata(L, sizeof(honey_window_information));
+    honey_window_info_ref = luaL_ref(L, LUA_REGISTRYINDEX);
     
     glfwInit();
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
 
-    info->window = glfwCreateWindow(640, 480, "honey", NULL, NULL);
+    info->window = glfwCreateWindow(HONEY_WINDOW_DEFAULT_WIDTH,
+                                    HONEY_WINDOW_DEFAULT_HEIGHT,
+                                    "honey", NULL, NULL);
+
+    info->width = HONEY_WINDOW_DEFAULT_WIDTH;
+    info->height = HONEY_WINDOW_DEFAULT_WIDTH;
+    info->fullscreen = false;
+    
     if (info->window == NULL) {
         fprintf(stderr, "[honey] ERROR: failed to create window!\n");
         glfwTerminate();
@@ -34,11 +40,13 @@ bool honey_setup_window(lua_State* L)
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
     honey_lua_element window_elements[] = {
-        { "internal", HONEY_LIGHTUSERDATA, { .pointer = info } },
         { "set_fullscreen", HONEY_FUNC, { .function = honey_window_set_fullscreen } },
+        { "set_title",      HONEY_FUNC, { .function = honey_window_set_title } },
+        { "get_size",       HONEY_FUNC, { .function = honey_window_get_size } },
+        { "set_size",       HONEY_FUNC, { .function = honey_window_set_size } },
     };
 
-    honey_lua_create_table(L, window_elements, 2);
+    honey_lua_create_table(L, window_elements, 4);
     return true;
 }
 
@@ -51,11 +59,8 @@ int honey_window_set_fullscreen(lua_State* L)
 
     bool fullscreen = lua_toboolean(L, 1);
 
-    lua_getglobal(L, "honey");
-    lua_getfield(L, -1, "window");
-    lua_getfield(L, -1, "internal");
+    lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
     honey_window_information* info = lua_touserdata(L, -1);
-    lua_pop(L, 2);
 
     if (fullscreen) {
         glfwGetWindowSize(info->window, &(info->width), &(info->height));
@@ -63,9 +68,58 @@ int honey_window_set_fullscreen(lua_State* L)
         GLFWmonitor* monitor = glfwGetPrimaryMonitor();
         const GLFWvidmode* mode = glfwGetVideoMode(monitor);
         glfwSetWindowMonitor(info->window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate);
+        info->fullscreen = true;
     }
     else {
         glfwSetWindowMonitor(info->window, NULL, 20, 20, info->width, info->height, 0);
+        info->fullscreen = false;
     }
     return 0;
 }
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+int honey_window_set_title(lua_State* L)
+{
+    if (!honey_lua_validate_types(L, 1, HONEY_STRING))
+        lua_error(L);
+
+    const char* title = lua_tostring(L, 1);
+
+    lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
+    honey_window_information* info = lua_touserdata(L, -1);
+    
+    glfwSetWindowTitle(info->window, title);
+    return 0;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+int honey_window_get_size(lua_State* L)
+{
+    lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
+    honey_window_information* info = lua_touserdata(L, -1);
+                 
+    int width, height;
+    glfwGetWindowSize(info->window, &width, &height);
+    lua_pushinteger(L, width);
+    lua_pushinteger(L, height);
+    return 2;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+int honey_window_set_size(lua_State* L)
+{
+    if (!honey_lua_validate_types(L, 2, HONEY_INT, HONEY_INT))
+        lua_error(L);
+
+    int width = lua_tointeger(L, 1);
+    int height = lua_tointeger(L, 2);
+
+    lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
+    honey_window_information* info = lua_touserdata(L, -1);
+
+    glfwSetWindowSize(info->window, width, height);
+    return 0;
+}
diff --git a/src/window/window.h b/src/window/window.h
index c0083ba..3d320f7 100644
--- a/src/window/window.h
+++ b/src/window/window.h
@@ -15,6 +15,8 @@ typedef struct {
     bool fullscreen;
 } honey_window_information;
 
+extern int honey_window_info_ref;
+
 /** @brief Push the various honey.window table to the stack.
  *
  * @param[in] L The lua state to push to
@@ -33,4 +35,27 @@ bool honey_setup_window(lua_State* L);
  */
 int honey_window_set_fullscreen(lua_State* L);
 
+/** @brief Set the title of the window.
+ *
+ * @param[in] title String containing the desired window title.
+ *
+ * @returns Nothing.
+ */
+int honey_window_set_title(lua_State* L);
+
+/** @brief Get the current size of the window.
+ *
+ * @returns width, height numbers representing the window size in pixels.
+ */
+int honey_window_get_size(lua_State* L);
+
+/** @brief Set the current size of the window.
+ *
+ * @param[in] width Integer of the desired width in pixels.
+ * @param[in] height Integer of the desired height in pixels.
+ *
+ * @returns Nothing.
+ */
+int honey_window_set_size(lua_State* L);
+
 #endif
-- 
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