new feature: support for merging screens together

src/screen.cpp

@@ -0,0 +1,107 @@
+/***************************************************************************
+ *   Copyright (C) 2008-2011 by Andrzej Rybczak                            *
+ *   electricityispower@gmail.com                                          *
+ *                                                                         *
+ *   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 St, Fifth Floor, Boston, MA 02110-1301, USA.              *
+ ***************************************************************************/
+
+#include <cassert>
+
+#include "screen.h"
+#include "global.h"
+
+using Global::myScreen;
+using Global::myLockedScreen;
+using Global::myInactiveScreen;
+
+void ApplyToVisibleWindows(void (BasicScreen::*f)())
+{
+	if (myLockedScreen)
+	{
+		if (myScreen == myLockedScreen)
+		{
+			if (myInactiveScreen)
+				(myInactiveScreen->*f)();
+		}
+		else
+			(myLockedScreen->*f)();
+	}
+	(myScreen->*f)();
+}
+
+void UpdateInactiveScreen(BasicScreen *screen)
+{
+	myInactiveScreen = myLockedScreen == screen ? 0 : myScreen;
+}
+
+bool isVisible(BasicScreen *screen)
+{
+	assert(screen != 0);
+	if (myLockedScreen)
+		return screen == myScreen || screen == myInactiveScreen || screen == myLockedScreen;
+	else
+		return screen == myScreen;
+}
+
+void BasicScreen::GetWindowResizeParams(size_t &x_offset, size_t &width, bool adjust_locked_screen)
+{
+	width = COLS;
+	x_offset = 0;
+	if (myLockedScreen && myInactiveScreen)
+	{
+		size_t locked_width = COLS*Config.locked_screen_width_part;
+		if (myLockedScreen == this)
+			width = locked_width;
+		else
+		{
+			width = COLS-locked_width-1;
+			x_offset = locked_width+1;
+			
+			if (adjust_locked_screen)
+			{
+				myLockedScreen->Resize();
+				myLockedScreen->Refresh();
+				
+				attron(COLOR_PAIR(Config.main_color));
+				mvvline(Global::MainStartY, x_offset-1, 0, Global::MainHeight);
+				attroff(COLOR_PAIR(Config.main_color));
+				refresh();
+			}
+		}
+	}
+}
+
+bool BasicScreen::Lock()
+{
+	if (myLockedScreen)
+		return false;
+	if (isLockable())
+	{
+		 myLockedScreen = this;
+		 return true;
+	}
+	else
+		return false;
+}
+
+void BasicScreen::Unlock()
+{
+	if (myInactiveScreen && myInactiveScreen != myLockedScreen)
+		myScreen = myInactiveScreen;
+	myLockedScreen->SwitchTo();
+	myLockedScreen = 0;
+	myInactiveScreen = 0;
+}