add jtk.c

Rsconscript

@@ -4,6 +4,7 @@ end
 
 build do
   main_env = Rscons::Environment.new do |env|
+    env["LIBS"] += %w[X11 GLX]
     env["sources"] = glob("src/**/*.{c,d}")
     env["D_IMPORT_PATH"] += glob("src/**")
     env.Program("jes", "${sources}")

src/gui/jtk.d

@@ -1,53 +0,0 @@
-struct Event
-{
-    enum Type : ubyte
-    {
-        WINDOW_CLOSE,
-        WINDOW_EXPOSE,
-        KEY_PRESS,
-        KEY_RELEASE,
-        BUTTON_PRESS,
-        BUTTON_RELEASE,
-        TIMER,
-        WINDOW_RESIZE,
-    };
-
-    struct KeyEvent
-    {
-        bool repeat;
-        uint key;
-        uint x_keycode;
-    };
-
-    struct ButtonEvent
-    {
-        uint mods;
-        ubyte button;
-    };
-
-    struct TimerEvent
-    {
-        uint timer_id;
-        void * user1;
-        void * user2;
-    };
-
-    struct WindowResizeEvent
-    {
-        uint width;
-        uint height;
-    };
-
-    Type type;
-    union
-    {
-        KeyEvent key;
-        ButtonEvent button;
-        TimerEvent timer;
-        WindowResizeEvent resize;
-    };
-}
-
-class Window
-{
-}

src/jes/gui/jtk.c

@@ -0,0 +1,54 @@
+#include <GL/glx.h>
+#include <stdio.h>
+#include <stdbool.h>
+
+static Display * g_display;
+static XVisualInfo * g_vi;
+static XSetWindowAttributes g_swa;
+static GLXContext g_context;
+
+/**
+ * Initialize the Jtk subsystem.
+ *
+ * @return true on success, false on failure
+ */
+bool jtk_init()
+{
+    static int glx_attribute_list[] = {
+        GLX_RGBA,
+        GLX_DOUBLEBUFFER,
+        None,
+    };
+
+    g_display = XOpenDisplay(NULL);
+    if (g_display == NULL)
+    {
+        fprintf(stderr, "XOpenDisplay() failure\n");
+        return false;
+    }
+
+    g_vi = glXChooseVisual(g_display, DefaultScreen(g_display),
+            glx_attribute_list);
+    if (g_vi == NULL)
+    {
+        fprintf(stderr, "glXChooseVisual() failure\n");
+        return false;
+    }
+
+    g_context = glXCreateContext(g_display, g_vi, NULL, True);
+    if (g_context == NULL)
+    {
+        fprintf(stderr, "glXCreateContext() failure\n");
+        return false;
+    }
+
+    Colormap colormap = XCreateColormap(g_display,
+            RootWindow(g_display, g_vi->screen), g_vi->visual, AllocNone);
+    g_swa.colormap = colormap;
+    g_swa.border_pixel = 0;
+    g_swa.event_mask = StructureNotifyMask |
+        KeyPressMask | KeyReleaseMask |
+        ButtonPressMask | ButtonReleaseMask;
+
+    return true;
+}

src/jes/gui/jtk.d

@@ -0,0 +1,68 @@
+private extern(C) bool jtk_init();
+
+struct Jtk
+{
+    struct Event
+    {
+        enum Type : ubyte
+        {
+            WINDOW_CLOSE,
+            WINDOW_EXPOSE,
+            KEY_PRESS,
+            KEY_RELEASE,
+            BUTTON_PRESS,
+            BUTTON_RELEASE,
+            TIMER,
+            WINDOW_RESIZE,
+        };
+
+        struct KeyEvent
+        {
+            bool repeat;
+            uint key;
+            uint x_keycode;
+        };
+
+        struct ButtonEvent
+        {
+            uint mods;
+            ubyte button;
+        };
+
+        struct TimerEvent
+        {
+            uint timer_id;
+            void * user1;
+            void * user2;
+        };
+
+        struct WindowResizeEvent
+        {
+            uint width;
+            uint height;
+        };
+
+        Type type;
+        union
+        {
+            KeyEvent key;
+            ButtonEvent button;
+            TimerEvent timer;
+            WindowResizeEvent resize;
+        };
+    }
+
+    class Window
+    {
+    }
+
+    static bool init()
+    {
+        if (!jtk_init())
+        {
+            return false;
+        }
+
+        return true;
+    }
+}

src/main.d

@@ -1,4 +1,7 @@
+import jes.gui.jtk;
+
 int main(string[] args)
 {
+    Jtk.init();
     return 0;
 }