basic lua interaction with text buffer

Makefile

@@ -1,7 +1,7 @@
 CC = gcc
 
-main.out: main.c
-	$(CC) -o main.out main.c
+main.out: main.c ui.c
+	$(CC) main.c ui.c -o main.out $(shell pkg-config --cflags --libs gtk+-3.0) $(shell pkg-config --cflags --libs luajit)
 
 clean:
 	@rm main.out

README.md

@@ -1,2 +1,5 @@
 # browser-thing
 
+Dependencies:
+ - luajit
+ - gtk3

corescripts/_global.lua

@@ -0,0 +1,29 @@
+--[[ utility functions ]]--
+
+function _el(name)
+    return function(args)
+        return { name, args }
+    end
+end
+
+h1 = _el("h1")
+t = _el("text")
+b = _el("b")
+input = _el("input")
+
+
+--[[ page module ]]--
+
+page = {}
+
+function page.Commit(content)
+    --__ext_pageview_clear()
+    for i, v in pairs(content) do
+        -- tag_name = v[1]
+        -- tag_props = v[2]
+
+        print(v[1], v[2])
+
+        __ext_pageview_append_tag(v[1], v[2])
+    end
+end

main.c

@@ -1,7 +1,98 @@
 #include <stdio.h>
+#include <gtk/gtk.h>
+#include "ui.h"
 
-int main() {
-    printf("hello");
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <luajit.h>
 
+static int start_lua(GtkApplication* app) {
+    int status;
+    lua_State* L;
+    int ret;
+
+    GtkWidget *page_window, *scrolled, *pageview;
+    GtkTextBuffer* pageview_buffer;
+
+    scrolled = gtk_scrolled_window_new(NULL, NULL);
+
+    pageview_buffer = gtk_text_buffer_new(NULL);
+    pageview = gtk_text_view_new_with_buffer(pageview_buffer);
+    gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(pageview), GTK_WRAP_WORD_CHAR);
+    gtk_text_view_set_editable(pageview, 0);
+    gtk_text_view_set_cursor_visible(pageview, 0);
+
+    page_window = gtk_application_window_new(app);
+    gtk_window_set_title(GTK_WINDOW(page_window), "Window");
+    gtk_window_set_default_size(GTK_WINDOW(page_window), 200, 200);
+
+    gtk_container_add(GTK_CONTAINER(scrolled), GTK_WIDGET(pageview));
+    gtk_container_add(GTK_CONTAINER(page_window), GTK_WIDGET(scrolled));
+
+    gtk_widget_show_all(page_window);
+
+    L = luaL_newstate(); // open Lua
+    if (!L) {
+        fprintf(stderr, "error: failed to create lua state");
+        return -1;
+    }
+
+    printf("lua: ready\n");
+
+    int pageview_append_tag(lua_State* L) {
+        const char* tag_type = luaL_checkstring(L, 1);
+        if (strcmp(tag_type, "text") == 0) {
+            printf(tag_type);
+            const char* tag_text = luaL_checkstring(L, 2);
+            GtkTextIter iter;
+            gtk_text_buffer_get_end_iter(pageview_buffer, &iter);
+            gtk_text_buffer_insert(pageview_buffer, &iter, tag_text, -1);
+        } else {
+            return luaL_error(L, "tried to create tag that does not exist");
+        }
+        return 0;
+    }
+    lua_pushcfunction(L, pageview_append_tag);
+    lua_setglobal(L, "__ext_pageview_append_tag");
+
+    luaL_openlibs(L);
+
+    status = luaL_loadfile(L, "corescripts/_global.lua");
+    ret = lua_pcall(L, 0, 0, 0);
+    if (ret != 0) {
+        fprintf(stderr, "lua: corescript: error: %s\n", lua_tostring(L, -1));
+        return 1;
+    }
+
+    status = luaL_loadfile(L, "pages/test.lua");
+    ret = lua_pcall(L, 0, 0, 0);
+    if (ret != 0) {
+        fprintf(stderr, "lua: error: %s\n", lua_tostring(L, -1));
+        return 1;
+    }
+
+    lua_close(L);
     return 0;
-}
+}
+
+static void activate(GtkApplication* app, gpointer user_data) {
+    printf("gtk: ready\n");
+    start_lua(app);
+}
+
+static int start_gtk(int* argc, char*** argv) {
+    int status = 1;
+
+    struct application_state state = new_application();
+    g_signal_connect(state.app, "activate", G_CALLBACK(activate), NULL);
+
+    status = g_application_run(G_APPLICATION(state.app), *argc, *argv);
+    g_object_unref(state.app);
+
+    return status;
+}
+
+int main(int argc, char** argv) {
+    start_gtk(&argc, &argv);
+}

pages/test.lua

@@ -0,0 +1,8 @@
+function Home()
+    return {
+        t("Hello"),
+        t(" wow")
+    }
+end
+
+page.Commit(Home())

ui.c

@@ -0,0 +1,11 @@
+#include "ui.h"
+
+struct application_state new_application() {
+    GtkApplication* gapp;
+
+    gapp = gtk_application_new("xyz.hippoz.nettle", G_APPLICATION_FLAGS_NONE);
+
+    struct application_state state = {.app = gapp};
+
+    return state;
+}

ui.h

@@ -0,0 +1,18 @@
+#ifndef __UI_H
+#define __UI_H
+
+#include <gtk/gtk.h>
+
+enum ElementType {
+    Heading1,
+    Text
+};
+
+struct application_state {
+    GtkApplication* app;
+};
+
+struct application_state new_application();
+void add_element(enum ElementType elementType);
+
+#endif