Improved 'Mass Detector': Now displays a dialog which displays the scan progress to the user, and can be cancelled (the whole thing still needs to be polished)

svn-id: r25697

1 files changed, 198 insertions, 0 deletions

diff --git a/gui/massadd.cpp b/gui/massadd.cpp
new file mode 100644
index 0000000000..10b72b2639
--- /dev/null
+++ b/gui/massadd.cpp
@@ -0,0 +1,198 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2006 The ScummVM project
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#include "common/stdafx.h"
+
+#include "engines/engine.h"
+#include "base/game.h"
+#include "base/plugins.h"
+
+#include "gui/launcher.h"	// For addGameToConf()
+#include "gui/massadd.h"
+#include "gui/newgui.h"
+#include "gui/widget.h"
+
+
+namespace GUI {
+
+/*
+TODO:
+- Themify this dialog
+- Add a ListWidget showing all the games we are going to add, and update it live
+- Add a 'busy' mouse cursor (animated?) which indicates to the user that
+  something is in progress, and show this cursor while we scan
+*/
+
+enum {
+	// Upper bound (im milliseconds) we want to spend in handleTickle.
+	// Setting this low makes the GUI more responsive but also slows
+	// down the scanning.
+	kMaxScanTime = 50
+};
+
+enum {
+	kOkCmd = 'OK  ',
+	kCancelCmd = 'CNCL'
+};
+
+
+
+MassAddDialog::MassAddDialog(const FilesystemNode &startDir)
+	: Dialog(10, 20, 300, 174),
+	_dirsScanned(0),
+	_okButton(0),
+	_dirProgressText(0),
+	_gameProgressText(0) {
+
+	// The dir we start our scan at
+	_scanStack.push(startDir);
+
+
+	int buttonWidth, buttonHeight;
+
+	if (g_gui.getWidgetSize() == kBigWidgetSize) {
+		buttonWidth = kBigButtonWidth;
+		buttonHeight = kBigButtonHeight;
+	} else {
+		buttonWidth = kButtonWidth;
+		buttonHeight = kButtonHeight;
+	}
+
+	// Create dialog items
+	// We need:
+	// - "OK" button, only enabled after the scan has finished
+	// - "Cancel" / "Abort" button, always active
+	// - static text as headline for the dialog
+	// - static text displaying the progress text
+	// - (future) a listbox showing all the games we added/are going to add
+
+	new StaticTextWidget(this, 10, 10 + 1 * kLineHeight, _w - 2*10, kLineHeight,
+								"Mass Add Dialog", kTextAlignCenter);
+
+	_dirProgressText = new StaticTextWidget(this, 10, 10 + 3 * kLineHeight, _w - 2*10, kLineHeight,
+								"... progress ...", kTextAlignCenter);
+
+	_gameProgressText = new StaticTextWidget(this, 10, 10 + 4 * kLineHeight, _w - 2*10, kLineHeight,
+								"... progress ...", kTextAlignCenter);
+
+	int okButtonPos = (_w - (buttonWidth * 2)) / 2;
+	int cancelButtonPos = ((_w - (buttonWidth * 2)) / 2) + buttonWidth + 10;
+
+	_okButton = addButton(this, okButtonPos, _h - buttonHeight - 8, "OK", kOkCmd, '\n');
+	_okButton->setEnabled(false);
+
+	addButton(this, cancelButtonPos, _h - buttonHeight - 8, "Cancel", kCancelCmd, '\27');
+
+}
+
+
+void MassAddDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
+	// FIXME: It's a really bad thing that we use two arbitrary constants
+	if (cmd == kOkCmd) {
+		// Add all the detected games to the config
+		for (GameList::const_iterator iter = _games.begin(); iter != _games.end(); ++iter) {
+			printf("  Added gameid '%s', desc '%s'\n",
+				(*iter)["gameid"].c_str(),
+				(*iter)["description"].c_str());
+			addGameToConf(*iter);
+		}
+
+		// Write everything to disk
+		ConfMan.flushToDisk();
+
+		close();
+	} else if (cmd == kCancelCmd) {
+		// User cancelled, so we don't do anything and just leave.
+		close();
+	} else {
+		Dialog::handleCommand(sender, cmd, data);
+	}
+}
+
+void MassAddDialog::handleTickle() {
+	if (_scanStack.empty())
+		return;	// We have finished scanning
+
+	uint32 t = g_system->getMillis();
+
+	// Perform a breadth-first scan of the filesystem.
+	while (!_scanStack.empty() && (g_system->getMillis() - t) < kMaxScanTime) {
+		FilesystemNode dir = _scanStack.pop();
+	
+		FSList files;
+		if (!dir.listDir(files, FilesystemNode::kListAll)) {
+			error("browser returned a node that is not a directory: '%s'",
+					dir.path().c_str());
+		}
+	
+		// Run the detector on the dir
+		GameList candidates(PluginManager::instance().detectGames(files));
+		
+		if (candidates.size() >= 1) {
+			// At least one match was found. For now we just take the first one...
+			// a more sophisticated solution would do something more clever here,
+			// e.g. ask the user which one to pick (make sure to display the 
+			// path, too).
+			GameDescriptor result = candidates[0];
+			result["path"] = dir.path();
+			
+			_games.push_back(result);
+		}
+		
+		
+		// Recurse into all subdirs
+		for (FSList::const_iterator file = files.begin(); file != files.end(); ++file) {
+			if (file->isDirectory()) {
+				_scanStack.push(*file);
+			}
+		}
+
+		_dirsScanned++;
+	}
+	
+	
+	// Update the dialog
+	char buf[256];
+
+	if (_scanStack.empty()) {
+		// Enable the OK button
+		_okButton->setEnabled(true);
+
+		snprintf(buf, sizeof(buf), "Scan complete!", _dirsScanned);
+		_dirProgressText->setLabel(buf);
+	
+		snprintf(buf, sizeof(buf), "Discovered %d games.", _games.size());
+		_gameProgressText->setLabel(buf);
+
+	} else {
+		snprintf(buf, sizeof(buf), "Scanned %d directories ...", _dirsScanned);
+		_dirProgressText->setLabel(buf);
+	
+		snprintf(buf, sizeof(buf), "Discovered %d games ...", _games.size());
+		_gameProgressText->setLabel(buf);
+	}
+
+	drawDialog();
+}
+
+
+} // end of namespace GUI
+