+#endif /* BUILD_X11 */
+
+
+/* --------------- windows implementation ----------------- */
+#ifdef BUILD_WIN32
+static void update_modkeys(void);
+static int translate_vkey(int vkey);
+static void handle_mbutton(int bn, int st, WPARAM wparam, LPARAM lparam);
+
+void glutMainLoopEvent(void)
+{
+ MSG msg;
+
+ if(!cb_display) {
+ panic("display callback not set");
+ }
+
+ if(reshape_pending && cb_reshape) {
+ reshape_pending = 0;
+ get_window_size(&win_width, &win_height);
+ cb_reshape(win_width, win_height);
+ }
+
+ if(!upd_pending && !cb_idle) {
+ GetMessage(&msg, 0, 0, 0);
+ TranslateMessage(&msg);
+ DispatchMessage(&msg);
+ if(quit) return;
+ }
+ while(PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
+ TranslateMessage(&msg);
+ DispatchMessage(&msg);
+ if(quit) return;
+ }
+
+ if(cb_idle) {
+ cb_idle();
+ }
+
+ if(upd_pending && mapped) {
+ upd_pending = 0;
+ cb_display();
+ }
+}
+
+void glutSwapBuffers(void)
+{
+ SwapBuffers(dc);
+}
+
+void glutPositionWindow(int x, int y)
+{
+ RECT rect;
+ GetWindowRect(win, &rect);
+ MoveWindow(win, x, y, rect.right - rect.left, rect.bottom - rect.top, 1);
+}
+
+void glutReshapeWindow(int xsz, int ysz)
+{
+ RECT rect;
+ GetWindowRect(win, &rect);
+ MoveWindow(win, rect.left, rect.top, xsz, ysz, 1);
+}
+
+void glutFullScreen(void)
+{
+ /* TODO */
+}
+
+void glutSetWindowTitle(const char *title)
+{
+ SetWindowText(win, title);
+}
+
+void glutSetIconTitle(const char *title)
+{
+}
+
+void glutSetCursor(int cidx)
+{
+ switch(cidx) {
+ case GLUT_CURSOR_NONE:
+ ShowCursor(0);
+ break;
+ case GLUT_CURSOR_INHERIT:
+ case GLUT_CURSOR_LEFT_ARROW:
+ default:
+ SetCursor(LoadCursor(0, IDC_ARROW));
+ ShowCursor(1);
+ }
+}
+
+
+static void create_window(const char *title)
+{
+ int pixfmt;
+ PIXELFORMATDESCRIPTOR pfd = {0};
+
+ if(!(win = CreateWindow("MiniGLUT", title, WS_OVERLAPPEDWINDOW, init_x, init_y,
+ init_width, init_height, 0, 0, hinst, 0))) {
+ panic("Failed to create window\n");
+ }
+ dc = GetDC(win);
+
+ pfd.nSize = sizeof pfd;
+ pfd.nVersion = 1;
+ pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+ if(init_mode & GLUT_STEREO) {
+ pfd.dwFlags |= PFD_STEREO;
+ }
+ pfd.iPixelType = init_mode & GLUT_INDEX ? PFD_TYPE_COLORINDEX : PFD_TYPE_RGBA;
+ pfd.cColorBits = 24;
+ if(init_mode & GLUT_ALPHA) {
+ pfd.cAlphaBits = 8;
+ }
+ if(init_mode & GLUT_ACCUM) {
+ pfd.cAccumBits = 24;
+ }
+ if(init_mode & GLUT_DEPTH) {
+ pfd.cDepthBits = 24;
+ }
+ if(init_mode & GLUT_STENCIL) {
+ pfd.cStencilBits = 8;
+ }
+ pfd.iLayerType = PFD_MAIN_PLANE;
+
+ if(!(pixfmt = ChoosePixelFormat(dc, &pfd))) {
+ panic("Failed to find suitable pixel format\n");
+ }
+ if(!SetPixelFormat(dc, pixfmt, &pfd)) {
+ panic("Failed to set the selected pixel format\n");
+ }
+ if(!(ctx = wglCreateContext(dc))) {
+ panic("Failed to create the OpenGL context\n");
+ }
+ wglMakeCurrent(dc, ctx);
+
+ DescribePixelFormat(dc, pixfmt, sizeof pfd, &pfd);
+ ctx_info.rsize = pfd.cRedBits;
+ ctx_info.gsize = pfd.cGreenBits;
+ ctx_info.bsize = pfd.cBlueBits;
+ ctx_info.asize = pfd.cAlphaBits;
+ ctx_info.zsize = pfd.cDepthBits;
+ ctx_info.ssize = pfd.cStencilBits;
+ ctx_info.dblbuf = pfd.dwFlags & PFD_DOUBLEBUFFER ? 1 : 0;
+ ctx_info.samples = 1; /* TODO */
+ ctx_info.srgb = 0; /* TODO */
+
+ ShowWindow(win, 1);
+ upd_pending = 1;
+ reshape_pending = 1;
+}
+
+static HRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam)
+{
+ static int mouse_x, mouse_y;
+ int key;
+
+ switch(msg) {
+ case WM_CLOSE:
+ if(win) DestroyWindow(win);
+ break;
+
+ case WM_DESTROY:
+ wglMakeCurrent(dc, 0);
+ wglDeleteContext(ctx);
+ quit = 1;
+ PostQuitMessage(0);
+ break;
+
+ case WM_PAINT:
+ upd_pending = 1;
+ ValidateRect(win, 0);
+ break;
+
+ case WM_SIZE:
+ win_width = lparam & 0xffff;
+ win_height = lparam >> 16;
+ if(cb_reshape) {
+ reshape_pending = 0;
+ cb_reshape(win_width, win_height);
+ }
+ break;
+
+ case WM_SHOWWINDOW:
+ mapped = wparam;
+ if(cb_vis) cb_vis(mapped ? GLUT_VISIBLE : GLUT_NOT_VISIBLE);
+ break;
+
+ case WM_KEYDOWN:
+ update_modkeys();
+ key = translate_vkey(wparam);
+ if(key < 256) {
+ if(cb_keydown) {
+ cb_keydown((unsigned char)key, mouse_x, mouse_y);
+ }
+ } else {
+ if(cb_skeydown) {
+ cb_skeydown(key, mouse_x, mouse_y);
+ }
+ }
+ break;
+
+ case WM_KEYUP:
+ update_modkeys();
+ key = translate_vkey(wparam);
+ if(key < 256) {
+ if(cb_keyup) {
+ cb_keyup((unsigned char)key, mouse_x, mouse_y);
+ }
+ } else {
+ if(cb_skeyup) {
+ cb_skeyup(key, mouse_x, mouse_y);
+ }
+ }
+ break;
+
+ case WM_LBUTTONDOWN:
+ handle_mbutton(0, 1, wparam, lparam);
+ break;
+ case WM_MBUTTONDOWN:
+ handle_mbutton(1, 1, wparam, lparam);
+ break;
+ case WM_RBUTTONDOWN:
+ handle_mbutton(2, 1, wparam, lparam);
+ break;
+ case WM_LBUTTONUP:
+ handle_mbutton(0, 0, wparam, lparam);
+ break;
+ case WM_MBUTTONUP:
+ handle_mbutton(1, 0, wparam, lparam);
+ break;
+ case WM_RBUTTONUP:
+ handle_mbutton(2, 0, wparam, lparam);
+ break;
+
+ case WM_MOUSEMOVE:
+ if(wparam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) {
+ if(cb_motion) cb_motion(lparam & 0xffff, lparam >> 16);
+ } else {
+ if(cb_passive) cb_passive(lparam & 0xffff, lparam >> 16);
+ }
+ break;
+
+ default:
+ return DefWindowProc(win, msg, wparam, lparam);
+ }
+
+ return 0;
+}
+
+static void update_modkeys(void)
+{
+ if(GetKeyState(VK_SHIFT)) {
+ modstate |= GLUT_ACTIVE_SHIFT;
+ } else {
+ modstate &= ~GLUT_ACTIVE_SHIFT;
+ }
+ if(GetKeyState(VK_CONTROL)) {
+ modstate |= GLUT_ACTIVE_CTRL;
+ } else {
+ modstate &= ~GLUT_ACTIVE_CTRL;
+ }
+ if(GetKeyState(VK_MENU)) {
+ modstate |= GLUT_ACTIVE_ALT;
+ } else {
+ modstate &= ~GLUT_ACTIVE_ALT;
+ }
+}
+
+static int translate_vkey(int vkey)
+{
+ return vkey; /* TODO */
+}
+
+static void handle_mbutton(int bn, int st, WPARAM wparam, LPARAM lparam)
+{
+ int x, y;
+
+ update_modkeys();
+
+ if(cb_mouse) {
+ x = lparam & 0xffff;
+ y = lparam >> 16;
+ cb_mouse(bn, st ? GLUT_DOWN : GLUT_UP, x, y);
+ }
+}
+
+static void get_window_pos(int *x, int *y)
+{
+ RECT rect;
+ GetWindowRect(win, &rect);
+ *x = rect.left;
+ *y = rect.top;
+}
+
+static void get_window_size(int *w, int *h)
+{
+ RECT rect;
+ GetClientRect(win, &rect);
+ *w = rect.right - rect.left;
+ *h = rect.bottom - rect.top;
+}
+
+static void get_screen_size(int *scrw, int *scrh)
+{
+ *scrw = GetSystemMetrics(SM_CXSCREEN);
+ *scrh = GetSystemMetrics(SM_CYSCREEN);
+}
+#endif /* BUILD_WIN32 */