WIN32: Add DialogManager with system file browser support

backends/dialogs/win32/win32-dialogs.cpp

@@ -0,0 +1,136 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#if defined(WIN32) && defined(USE_SYSDIALOGS)
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include <windows.h>
+#include <shlobj.h>
+#if defined(ARRAYSIZE)
+#undef ARRAYSIZE
+#endif
+
+#include "common/scummsys.h"
+
+#include "backends/dialogs/win32/win32-dialogs.h"
+#include "backends/platform/sdl/win32/win32_wrapper.h"
+#include "backends/platform/sdl/win32/win32-window.h"
+
+#include "common/config-manager.h"
+#include "common/system.h"
+#include "common/events.h"
+#include "common/translation.h"
+
+Win32DialogManager::Win32DialogManager(SdlWindow_Win32 *window) : _window(window) {
+	CoInitialize(NULL);
+}
+
+Win32DialogManager::~Win32DialogManager() {
+	CoUninitialize();
+}
+
+Common::DialogManager::DialogResult Win32DialogManager::showFileBrowser(const char *title, Common::FSNode &choice, bool isDirBrowser) {
+	DialogResult result = kDialogError;
+
+	// Do nothing if not running on Windows Vista or later
+	if (!Win32::confirmWindowsVersion(6, 0))
+		return result;
+
+	IFileOpenDialog *dialog = NULL;
+	HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog,
+	                              NULL,
+	                              CLSCTX_INPROC_SERVER,
+	                              IID_PPV_ARGS(&dialog));
+
+	if (SUCCEEDED(hr)) {
+		// If in fullscreen mode, switch to windowed mode
+		bool wasFullscreen = g_system->getFeatureState(OSystem::kFeatureFullscreenMode);
+		if (wasFullscreen) {
+			g_system->beginGFXTransaction();
+			g_system->setFeatureState(OSystem::kFeatureFullscreenMode, false);
+			g_system->endGFXTransaction();
+		}
+
+		// Customize dialog
+		bool showHidden = ConfMan.getBool("gui_browser_show_hidden", Common::ConfigManager::kApplicationDomain);
+
+		DWORD dwOptions;
+		hr = dialog->GetOptions(&dwOptions);
+		if (SUCCEEDED(hr)) {
+			if (isDirBrowser)
+				dwOptions |= FOS_PICKFOLDERS;
+			if (showHidden)
+				dwOptions |= FOS_FORCESHOWHIDDEN;
+			hr = dialog->SetOptions(dwOptions);
+		}
+
+		LPWSTR str = Win32::ansiToUnicode(title);
+		hr = dialog->SetTitle(str);
+		delete[] str;
+
+		str = Win32::ansiToUnicode(_("Choose"));
+		hr = dialog->SetOkButtonLabel(str);
+		delete[] str;
+
+		// Show dialog
+		hr = dialog->Show(_window->getHwnd());
+
+		if (SUCCEEDED(hr)) {
+			IShellItem *selectedItem = NULL;
+			LPWSTR path = NULL;
+
+			// Get the selection from the user
+			hr = dialog->GetResult(&selectedItem);
+
+			if (SUCCEEDED(hr)) {
+				hr = selectedItem->GetDisplayName(SIGDN_FILESYSPATH, &path);
+
+				if (SUCCEEDED(hr)) {
+					char *str = Win32::unicodeToAnsi(path);
+					choice = Common::FSNode(str);
+					result = kDialogOk;
+					CoTaskMemFree(path);
+					delete[] str;
+				}
+
+				selectedItem->Release();
+			}
+		} else if (hr == HRESULT_FROM_WIN32(ERROR_CANCELLED)) {
+			result = kDialogCancel;
+		}
+
+		dialog->Release();
+
+		// If we were in fullscreen mode, switch back
+		if (wasFullscreen) {
+			g_system->beginGFXTransaction();
+			g_system->setFeatureState(OSystem::kFeatureFullscreenMode, true);
+			g_system->endGFXTransaction();
+		}
+	}
+
+	return result;
+}
+
+#endif

backends/dialogs/win32/win32-dialogs.h

@@ -0,0 +1,45 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKEND_WIN32_DIALOGS_H
+#define BACKEND_WIN32_DIALOGS_H
+
+#if defined(WIN32) && defined(USE_SYSDIALOGS)
+
+#include "common/fs.h"
+#include "common/dialogs.h"
+
+class SdlWindow_Win32;
+
+class Win32DialogManager : public Common::DialogManager {
+public:
+	Win32DialogManager(SdlWindow_Win32 *window);
+	virtual ~Win32DialogManager();
+	virtual DialogResult showFileBrowser(const char *title, Common::FSNode &choice, bool isDirBrowser);
+
+private:
+	SdlWindow_Win32 *_window;
+};
+
+#endif
+
+#endif // BACKEND_WIN32_DIALOGS_H

backends/module.mk

@@ -189,6 +189,7 @@ endif
 ifdef WIN32
 MODULE_OBJS += \
 	audiocd/win32/win32-audiocd.o \
+	dialogs/win32/win32-dialogs.o \
 	fs/windows/windows-fs.o \
 	fs/windows/windows-fs-factory.o \
 	midi/windows.o \

backends/platform/sdl/win32/win32.cpp

@@ -47,6 +47,7 @@
 #include "backends/fs/windows/windows-fs-factory.h"
 #include "backends/taskbar/win32/win32-taskbar.h"
 #include "backends/updates/win32/win32-updates.h"
+#include "backends/dialogs/win32/win32-dialogs.h"
 
 #include "common/memstream.h"
 
@@ -64,6 +65,11 @@ void OSystem_Win32::init() {
 	_taskbarManager = new Win32TaskbarManager((SdlWindow_Win32*)_window);
 #endif
 
+#if defined(USE_SYSDIALOGS)
+	// Initialize dialog manager
+	_dialogManager = new Win32DialogManager((SdlWindow_Win32*)_window);
+#endif
+
 	// Invoke parent implementation of this method
 	OSystem_SDL::init();
 }

backends/platform/sdl/win32/win32_wrapper.cpp

@@ -20,16 +20,10 @@
  *
  */
 
-// Disable symbol overrides so that we can use system headers.
-#define FORBIDDEN_SYMBOL_ALLOW_ALL
-
 #include "common/scummsys.h"
 // We need certain functions that are excluded by default
 #undef NONLS
 #include <windows.h>
-#if defined(ARRAYSIZE)
-#undef ARRAYSIZE
-#endif
 
 #include "backends/platform/sdl/win32/win32_wrapper.h"
 
@@ -72,7 +66,7 @@ bool confirmWindowsVersion(int majorVersion, int minorVersion) {
 	return VerifyVersionInfoFunc(&versionInfo, VER_MAJORVERSION | VER_MINORVERSION, conditionMask);
 }
 
-LPWSTR ansiToUnicode(const char *s) {
+wchar_t *ansiToUnicode(const char *s) {
 	DWORD size = MultiByteToWideChar(0, 0, s, -1, NULL, 0);
 
 	if (size > 0) {
@@ -84,4 +78,16 @@ LPWSTR ansiToUnicode(const char *s) {
 	return NULL;
 }
 
+char *unicodeToAnsi(const wchar_t *s) {
+	DWORD size = WideCharToMultiByte(0, 0, s, -1, NULL, 0, 0, 0);
+
+	if (size > 0) {
+		char *result = new char[size];
+		if (WideCharToMultiByte(0, 0, s, -1, result, size, 0, 0) != 0)
+			return result;
+	}
+
+	return NULL;
+}
+
 }

backends/platform/sdl/win32/win32_wrapper.h

@@ -44,6 +44,16 @@ bool confirmWindowsVersion(int majorVersion, int minorVersion);
  * @note Return value must be freed by the caller.
  */
 wchar_t *ansiToUnicode(const char *s);
+/**
+ * Converts a Windows wide-character string into a C string.
+ * Used to interact with Win32 Unicode APIs with no ANSI fallback.
+ *
+ * @param s Source string
+ * @return Converted string
+ *
+ * @note Return value must be freed by the caller.
+ */
+char *unicodeToAnsi(const wchar_t *s);
 
 }