1 files changed, 110 insertions, 0 deletions
diff --git a/src/libui_sdl/libui/windows/container.cpp b/src/libui_sdl/libui/windows/container.cpp
new file mode 100644
index 0000000..9ec1e28
--- /dev/null
+++ b/src/libui_sdl/libui/windows/container.cpp
@@ -0,0 +1,110 @@
+// 26 april 2015
+#include "uipriv_windows.hpp"
+
+// Code for the HWND of the following uiControls:
+// - uiBox
+// - uiRadioButtons
+// - uiSpinbox
+// - uiTab
+// - uiForm
+// - uiGrid
+
+struct containerInit {
+	uiWindowsControl *c;
+	void (*onResize)(uiWindowsControl *);
+};
+
+static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	RECT r;
+	HDC dc;
+	PAINTSTRUCT ps;
+	CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
+	WINDOWPOS *wp = (WINDOWPOS *) lParam;
+	MINMAXINFO *mmi = (MINMAXINFO *) lParam;
+	struct containerInit *init;
+	uiWindowsControl *c;
+	void (*onResize)(uiWindowsControl *);
+	int minwid, minht;
+	LRESULT lResult;
+
+	if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
+		return lResult;
+	switch (uMsg) {
+	case WM_CREATE:
+		init = (struct containerInit *) (cs->lpCreateParams);
+		SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (init->onResize));
+		SetWindowLongPtrW(hwnd, 0, (LONG_PTR) (init->c));
+		break;		// defer to DefWindowProc()
+	case WM_WINDOWPOSCHANGED:
+		if ((wp->flags & SWP_NOSIZE) != 0)
+			break;	// defer to DefWindowProc();
+		onResize = (void (*)(uiWindowsControl *)) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
+		c = (uiWindowsControl *) GetWindowLongPtrW(hwnd, 0);
+		(*(onResize))(c);
+		return 0;
+	case WM_GETMINMAXINFO:
+		lResult = DefWindowProcW(hwnd, uMsg, wParam, lParam);
+		c = (uiWindowsControl *) GetWindowLongPtrW(hwnd, 0);
+		uiWindowsControlMinimumSize(c, &minwid, &minht);
+		mmi->ptMinTrackSize.x = minwid;
+		mmi->ptMinTrackSize.y = minht;
+		return lResult;
+	case WM_PAINT:
+		dc = BeginPaint(hwnd, &ps);
+		if (dc == NULL) {
+			logLastError(L"error beginning container paint");
+			// bail out; hope DefWindowProc() catches us
+			break;
+		}
+		r = ps.rcPaint;
+		paintContainerBackground(hwnd, dc, &r);
+		EndPaint(hwnd, &ps);
+		return 0;
+	// tab controls use this to draw the background of the tab area
+	case WM_PRINTCLIENT:
+		uiWindowsEnsureGetClientRect(hwnd, &r);
+		paintContainerBackground(hwnd, (HDC) wParam, &r);
+		return 0;
+	case WM_ERASEBKGND:
+		// avoid some flicker
+		// we draw the whole update area anyway
+		return 1;
+	}
+	return DefWindowProcW(hwnd, uMsg, wParam, lParam);
+}
+
+ATOM initContainer(HICON hDefaultIcon, HCURSOR hDefaultCursor)
+{
+	WNDCLASSW wc;
+
+	ZeroMemory(&wc, sizeof (WNDCLASSW));
+	wc.lpszClassName = containerClass;
+	wc.lpfnWndProc = containerWndProc;
+	wc.hInstance = hInstance;
+	wc.hIcon = hDefaultIcon;
+	wc.hCursor = hDefaultCursor;
+	wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
+	wc.cbWndExtra = sizeof (void *);
+	return RegisterClassW(&wc);
+}
+
+void uninitContainer(void)
+{
+	if (UnregisterClassW(containerClass, hInstance) == 0)
+		logLastError(L"error unregistering container window class");
+}
+
+HWND uiWindowsMakeContainer(uiWindowsControl *c, void (*onResize)(uiWindowsControl *))
+{
+	struct containerInit init;
+
+	// TODO onResize cannot be NULL
+	init.c = c;
+	init.onResize = onResize;
+	return uiWindowsEnsureCreateControlHWND(WS_EX_CONTROLPARENT,
+		containerClass, L"",
+		0,
+		hInstance, (LPVOID) (&init),
+		FALSE);
+}