GLK: FROTZ: Added skeleton classes for ZMachine windows

1 files changed, 97 insertions, 0 deletions

diff --git a/engines/glk/frotz/windows.h b/engines/glk/frotz/windows.h
new file mode 100644
index 0000000000..566d2fd5c8
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+++ b/engines/glk/frotz/windows.h
@@ -0,0 +1,97 @@
+/* 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 GLK_FROTZ_WINDOWS
+#define GLK_FROTZ_WINDOWS
+
+namespace Glk {
+namespace Frotz {
+
+/**
+ * Represents one of the virtual windows
+ */
+class Window {
+private:
+	winid_t _win;
+public:
+	/**
+	 * Constructor
+	 */
+	Window() : _win(nullptr) {}
+
+	/**
+	 * Assignment operator
+	 */
+	Window &operator=(winid_t win) {
+		_win = win;
+		return *this;
+	}
+
+	/**
+	 * Cast operator for getting a Glk window
+	 */
+	operator winid_t() const { return _win; }
+
+	/**
+	 * Cast operator for testing if the window is valid (present)
+	 */
+	operator bool() const { return _win != nullptr; }
+
+	/**
+	 * Property access. There are the following properties defined by the spec:
+	 * 0  y coordinate    6   left margin size            12  font number
+	 * 1  x coordinate    7   right margin size           13  font size
+	 * 2  y size          8   newline interrupt routine   14  attributes
+	 * 3  x size          9   interrupt countdown         15  line count
+	 * 4  y cursor        10  text style                  16 true foreground colour
+	 * 5  x cursor        11  colour data                 17 true background colour
+	 */
+};
+
+/**
+ * The Z-machine has 8 virtual windows
+ */
+class Windows {
+private:
+	Window _windows[8];
+public:
+	Window &_lower;
+	Window &_upper;
+public:
+	/**
+	 * Constructor
+	 */
+	Windows() : _lower(_windows[0]), _upper(_windows[1]) {}
+
+	/**
+	 * Array access
+	 */
+	Window &operator[](uint idx) {
+		assert(idx < 8);
+		return _windows[idx];
+	}
+};
+
+} // End of namespace Frotz
+} // End of namespace Glk
+
+#endif