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Diffstat (limited to 'unix/x0vncserver/Geometry.cxx')
-rw-r--r-- | unix/x0vncserver/Geometry.cxx | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/unix/x0vncserver/Geometry.cxx b/unix/x0vncserver/Geometry.cxx new file mode 100644 index 00000000..ccb4e699 --- /dev/null +++ b/unix/x0vncserver/Geometry.cxx @@ -0,0 +1,71 @@ +/* Copyright (C) 2006 Constantin Kaplinsky. All Rights Reserved. + * + * This 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 software 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 software; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + * USA. + */ + +// +// Geometry.cxx +// + +#include <rfb/Rect.h> +#include <rfb/LogWriter.h> +#include <x0vncserver/Geometry.h> + +static LogWriter vlog("Geometry"); + +StringParameter Geometry::m_geometryParam("Geometry", + "Screen area shown to VNC clients. " + "Format is <width>x<height>+<offset_x>+<offset_y>, " + "more information in man X, section GEOMETRY SPECIFICATIONS. " + "If the argument is empty, full screen is shown to VNC clients.", + ""); + +Geometry::Geometry(int fullWidth, int fullHeight) + : m_width(fullWidth), m_height(fullHeight), + m_offsetLeft(0), m_offsetTop(0) +{ + const char *param = m_geometryParam.getData(); + if (strlen(param) != 0) { + int w, h; + int x = 0, y = 0; + char sign_x[2] = "+"; + char sign_y[2] = "+"; + int n = sscanf(param, "%dx%d%1[+-]%d%1[+-]%d", + &w, &h, sign_x, &x, sign_y, &y); + if ((n == 2 || n == 6) && w > 0 && h > 0 && x >= 0 && y >= 0) { + if (sign_x[0] == '-') + x = fullWidth - w - x; + if (sign_y[0] == '-') + y = fullHeight - h - y; + Rect fullRect(0, 0, fullWidth, fullHeight); + Rect partRect(x, y, x + w, y + h); + Rect r = partRect.intersect(fullRect); + if (r.area() > 0) { + m_width = r.width(); + m_height = r.height(); + m_offsetLeft = r.tl.x; + m_offsetTop = r.tl.y; + } else { + vlog.error("Requested area is out of the desktop boundaries"); + } + } else { + vlog.error("Wrong argument format"); + } + } + vlog.info("Desktop geometry is %dx%d+%d+%d", + m_width, m_height, m_offsetLeft, m_offsetTop); +} + |