First Commit

libui-ng/windows/init.cpp

@@ -0,0 +1,178 @@
+// 6 april 2015
+#include "uipriv_windows.hpp"
+#include "attrstr.hpp"
+
+HINSTANCE hInstance;
+int nCmdShow;
+
+HFONT hMessageFont;
+
+// LONGTERM needed?
+HBRUSH hollowBrush;
+
+// the returned pointer is actually to the second character
+// if the first character is - then free, otherwise don't
+static const char *initerr(const char *message, const WCHAR *label, DWORD value)
+{
+	WCHAR *sysmsg;
+	BOOL hassysmsg;
+	WCHAR *wmessage;
+	WCHAR *wout;
+	char *out;
+
+	hassysmsg = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, value, 0, (LPWSTR) (&sysmsg), 0, NULL) != 0;
+	if (!hassysmsg)
+		sysmsg = (WCHAR *) L"";			// TODO
+	wmessage = toUTF16(message + 1);
+	wout = strf(L"-error initializing libui: %s; code %I32d (0x%08I32X) %s",
+		wmessage,
+		value, value,
+		sysmsg);
+	uiprivFree(wmessage);
+	if (hassysmsg)
+		LocalFree(sysmsg);		// ignore error
+	out = toUTF8(wout);
+	uiprivFree(wout);
+	return out + 1;
+}
+
+#define ieLastErr(msg) initerr("=" msg, L"GetLastError() ==", GetLastError())
+#define ieHRESULT(msg, hr) initerr("=" msg, L"HRESULT", (DWORD) hr)
+
+// LONGTERM put this declaration in a common file
+uiInitOptions uiprivOptions;
+
+#define wantedICCClasses ( \
+	ICC_STANDARD_CLASSES |	/* user32.dll controls */		\
+	ICC_PROGRESS_CLASS |		/* progress bars */			\
+	ICC_TAB_CLASSES |			/* tabs */					\
+	ICC_LISTVIEW_CLASSES |		/* table headers */			\
+	ICC_UPDOWN_CLASS |		/* spinboxes */			\
+	ICC_BAR_CLASSES |			/* trackbar */				\
+	ICC_DATE_CLASSES |		/* date/time picker */		\
+	0)
+
+const char *uiInit(uiInitOptions *o)
+{
+	STARTUPINFOW si;
+	const char *ce;
+	HICON hDefaultIcon;
+	HCURSOR hDefaultCursor;
+	NONCLIENTMETRICSW ncm;
+	INITCOMMONCONTROLSEX icc;
+	HRESULT hr;
+
+	uiprivOptions = *o;
+
+	initAlloc();
+
+	nCmdShow = SW_SHOWDEFAULT;
+	GetStartupInfoW(&si);
+	if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
+		nCmdShow = si.wShowWindow;
+
+	// LONGTERM set DPI awareness
+
+	hDefaultIcon = LoadIconW(NULL, IDI_APPLICATION);
+	if (hDefaultIcon == NULL)
+		return ieLastErr("loading default icon for window classes");
+	hDefaultCursor = LoadCursorW(NULL, IDC_ARROW);
+	if (hDefaultCursor == NULL)
+		return ieLastErr("loading default cursor for window classes");
+
+	ce = initUtilWindow(hDefaultIcon, hDefaultCursor);
+	if (ce != NULL)
+		return initerr(ce, L"GetLastError() ==", GetLastError());
+
+	if (registerWindowClass(hDefaultIcon, hDefaultCursor) == 0)
+		return ieLastErr("registering uiWindow window class");
+
+	ZeroMemory(&ncm, sizeof (NONCLIENTMETRICSW));
+	ncm.cbSize = sizeof (NONCLIENTMETRICSW);
+	if (SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof (NONCLIENTMETRICSW), &ncm, sizeof (NONCLIENTMETRICSW)) == 0)
+		return ieLastErr("getting default fonts");
+	hMessageFont = CreateFontIndirectW(&(ncm.lfMessageFont));
+	if (hMessageFont == NULL)
+		return ieLastErr("loading default messagebox font; this is the default UI font");
+
+	if (initContainer(hDefaultIcon, hDefaultCursor) == 0)
+		return ieLastErr("initializing uiWindowsMakeContainer() window class");
+
+	hollowBrush = (HBRUSH) GetStockObject(HOLLOW_BRUSH);
+	if (hollowBrush == NULL)
+		return ieLastErr("getting hollow brush");
+
+	ZeroMemory(&icc, sizeof (INITCOMMONCONTROLSEX));
+	icc.dwSize = sizeof (INITCOMMONCONTROLSEX);
+	icc.dwICC = wantedICCClasses;
+
+	if (InitCommonControlsEx(&icc) == 0) {
+		if (GetLastError() != ERROR_SUCCESS) {
+			return ieLastErr("initializing Common Controls");
+		}
+	}
+
+	hr = CoInitialize(NULL);
+	if (hr != S_OK && hr != S_FALSE)
+		return ieHRESULT("initializing COM", hr);
+	// LONGTERM initialize COM security
+	// LONGTERM (windows vista) turn off COM exception handling
+
+	hr = initDraw();
+	if (hr != S_OK)
+		return ieHRESULT("initializing Direct2D", hr);
+
+	hr = uiprivInitDrawText();
+	if (hr != S_OK)
+		return ieHRESULT("initializing DirectWrite", hr);
+
+	if (registerAreaClass(hDefaultIcon, hDefaultCursor) == 0)
+		return ieLastErr("registering uiArea window class");
+
+	if (registerMessageFilter() == 0)
+		return ieLastErr("registering libui message filter");
+
+	if (registerD2DScratchClass(hDefaultIcon, hDefaultCursor) == 0)
+		return ieLastErr("initializing D2D scratch window class");
+
+	hr = uiprivInitImage();
+	if (hr != S_OK)
+		return ieHRESULT("initializing WIC", hr);
+
+	return NULL;
+}
+
+void uiUninit(void)
+{
+	uiprivUninitTimers();
+	uiprivUninitImage();
+	uninitMenus();
+	unregisterD2DScratchClass();
+	unregisterMessageFilter();
+	unregisterArea();
+	uiprivUninitDrawText();
+	uninitDraw();
+	CoUninitialize();
+	if (DeleteObject(hollowBrush) == 0)
+		logLastError(L"error freeing hollow brush");
+	uninitContainer();
+	if (DeleteObject(hMessageFont) == 0)
+		logLastError(L"error deleting control font");
+	unregisterWindowClass();
+	// no need to delete the default icon or cursor; see http://stackoverflow.com/questions/30603077/
+	uninitUtilWindow();
+	uninitAlloc();
+}
+
+void uiFreeInitError(const char *err)
+{
+	if (*(err - 1) == '-')
+		uiprivFree((void *) (err - 1));
+}
+
+BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
+{
+	if (fdwReason == DLL_PROCESS_ATTACH)
+		hInstance = hinstDLL;
+	return TRUE;
+}