Beginnings of a dialog display class

svn-id: r46330

1 files changed, 165 insertions, 0 deletions

diff --git a/engines/m4/dialogs.cpp b/engines/m4/dialogs.cpp
new file mode 100644
index 0000000000..d4b341f891
--- /dev/null
+++ b/engines/m4/dialogs.cpp
@@ -0,0 +1,165 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "m4/dialogs.h"
+#include "common/file.h"
+
+namespace M4 {
+
+static void strToUpper(char *s) {
+	while (*s) {
+		*s = toupper(*s);
+		++s;
+	}
+}
+
+void Dialog::initDialog() {
+
+}
+
+void Dialog::incLine() {
+	++_numLines;
+	assert(++_numLines < 20);
+}
+
+void Dialog::writeChars(const char *line) {
+
+}
+
+void Dialog::addLine(const char *line) {
+
+}
+
+bool Dialog::matchCommand(const char *s1, const char *s2) {
+	return strncmp(s1, s2, strlen(s2)) == 0;
+}
+
+Dialog::Dialog(M4Engine *vm, const char *msgData): View(vm, Common::Rect(100, 80, 220, 140)) {
+	assert(msgData);
+	const char *srcP = msgData;
+	bool skipLine = false;
+	bool initFlag = false;
+	bool cmdFlag = false;
+	bool crFlag = false;
+
+	_dialogTitleId = 0;
+	_numLines = 0;
+	_dialogIndex = 0;
+
+	char dialogLine[256];
+	char cmdText[80];
+	char *lineP = &dialogLine[0];
+	char *cmdP = NULL;
+
+	while (*srcP != '\0') {
+		if (*srcP == '\n') {
+			// Line completed
+			*lineP = '\0';
+			++srcP;
+
+			if (!initFlag) {
+				initDialog();
+				incLine();
+				initFlag = true;
+			} else {
+				writeChars(dialogLine);
+			}
+		} else if (*srcP == '[') {
+			// Start of a command sequence
+			cmdFlag = true;
+			cmdP = &cmdText[0];
+			++srcP;
+			continue;
+		} else if (*srcP == ']') {
+			// End of a command sequence
+			*cmdP = '\0';
+			cmdFlag = false;
+			strToUpper(cmdText);
+
+			if (matchCommand(cmdText, "CENTER"))
+				// Center command
+				skipLine = true;
+			else if (matchCommand(cmdText, "TITLE")) {
+				// Title command
+				int id = atoi(cmdText + 5);
+				if (id > 0) 
+					_dialogTitleId = id;
+			} else if (matchCommand(cmdText, "CR")) {
+				// CR command
+				if (skipLine)
+					crFlag = true;
+				else {
+					initDialog();
+				}
+			} else if (matchCommand(cmdText, "ASK")) {
+				// doAsk();
+			} else if (matchCommand(cmdText, "VERB")) {
+				// Verb/vocab retrieval
+				/*getVocab(); */
+			} else if (matchCommand(cmdText, "INDEX")) {
+				// Index command
+				_dialogIndex = atoi(cmdText + 5);
+			} else if (matchCommand(cmdText, "NOUN")) {
+				// Noun command
+			} else if (matchCommand(cmdText, "SENTENCE")) {
+				// Sentence command
+			} else {
+				error("Unknown dialog command '%s' encountered", cmdText);
+			}
+		}
+
+		if (cmdFlag)
+			*cmdP++ = *srcP;
+		++srcP;
+	}
+
+	if (!skipLine)
+		incLine();
+	draw();
+}
+
+void Dialog::draw() {
+	// TODO: Implement rendering of dialog correctly
+	this->fillRect(Common::Rect(0, 0, width(), height()), 0);
+	_vm->_font->setColors(5, 5, 0xff);
+	_vm->_font->writeString(this, "This will be a dialog", 10, 10, 0, 0);
+}
+
+bool Dialog::onEvent(M4EventType eventType, int param1, int x, int y, bool &captureEvents) {
+	if (_vm->_mouse->getCursorNum() != CURSOR_ARROW)
+		_vm->_mouse->setCursorNum(CURSOR_ARROW);
+
+	captureEvents = true;
+
+	if (eventType == MEVENT_LEFT_CLICK) {
+		captureEvents = false;
+		_vm->_viewManager->deleteView(this);
+	}
+
+	return true;
+}
+
+
+} // End of namespace M4