Initial commit

engines/ultima/ultima4/controllers/read_string_controller.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/ultima4/controllers/read_string_controller.h"
+#include "ultima/ultima4/game/context.h"
+#include "ultima/ultima4/gfx/screen.h"
+
+namespace Ultima {
+namespace Ultima4 {
+
+ReadStringController::ReadStringController(int maxlen, int screenX, int screenY,
+		const Common::String &accepted_chars) : WaitableController<Common::String>("") {
+	_maxLen = maxlen;
+	_screenX = screenX;
+	_screenY = screenY;
+	_view = nullptr;
+	_accepted = accepted_chars;
+}
+
+ReadStringController::ReadStringController(int maxlen, TextView *view,
+		const Common::String &accepted_chars) : WaitableController<Common::String>("") {
+	_maxLen = maxlen;
+	_screenX = view->getCursorX();
+	_screenY = view->getCursorY();
+	_view = view;
+	_accepted = accepted_chars;
+}
+
+bool ReadStringController::keyPressed(int key) {
+	int valid = true, len = _value.size();
+	size_t pos = Common::String::npos;
+
+	if (key < 0x80)
+		pos = _accepted.findFirstOf(key);
+
+	if (pos != Common::String::npos) {
+		if (key == Common::KEYCODE_BACKSPACE) {
+			if (len > 0) {
+				/* remove the last character */
+				_value.erase(len - 1, 1);
+
+				if (_view) {
+					_view->textAt(_screenX + len - 1, _screenY, " ");
+					_view->setCursorPos(_screenX + len - 1, _screenY, true);
+				} else {
+					g_screen->screenHideCursor();
+					g_screen->screenTextAt(_screenX + len - 1, _screenY, " ");
+					g_screen->screenSetCursorPos(_screenX + len - 1, _screenY);
+					g_screen->screenShowCursor();
+				}
+			}
+		} else if (key == '\n' || key == '\r') {
+			doneWaiting();
+		} else if (len < _maxLen) {
+			/* add a character to the end */
+			_value += key;
+
+			if (_view) {
+				_view->textAt(_screenX + len, _screenY, "%c", key);
+			} else {
+				g_screen->screenHideCursor();
+				g_screen->screenTextAt(_screenX + len, _screenY, "%c", key);
+				g_screen->screenSetCursorPos(_screenX + len + 1, _screenY);
+				g_context->_col = len + 1;
+				g_screen->screenShowCursor();
+			}
+		}
+	} else {
+		valid = false;
+	}
+
+	return valid || KeyHandler::defaultHandler(key, nullptr);
+}
+
+Common::String ReadStringController::get(int maxlen, int screenX, int screenY, EventHandler *eh) {
+	if (!eh)
+		eh = eventHandler;
+
+	ReadStringController ctrl(maxlen, screenX, screenY);
+	eh->pushController(&ctrl);
+	return ctrl.waitFor();
+}
+
+Common::String ReadStringController::get(int maxlen, TextView *view, EventHandler *eh) {
+	if (!eh)
+		eh = eventHandler;
+
+	ReadStringController ctrl(maxlen, view);
+	eh->pushController(&ctrl);
+	return ctrl.waitFor();
+}
+
+} // End of namespace Ultima4
+} // End of namespace Ultima