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/* Copyright 2009 Pierre Ossman for Cendio AB
*
* 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.
*/
// Management class for the RFB virtual screens
#ifndef __RFB_SCREENSET_INCLUDED__
#define __RFB_SCREENSET_INCLUDED__
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <rfb/Rect.h>
#include <list>
#include <set>
namespace rfb {
// rfb::Screen
//
// Represents a single RFB virtual screen, which includes
// coordinates, an id and flags.
struct Screen {
Screen(void) : id(0), flags(0) {};
Screen(uint32_t id_, int x_, int y_, int w_, int h_, uint32_t flags_) :
id(id_), dimensions(x_, y_, x_+w_, y_+h_), flags(flags_) {};
inline bool operator==(const Screen& r) const {
if (id != r.id)
return false;
if (dimensions != r.dimensions)
return false;
if (flags != r.flags)
return false;
return true;
}
uint32_t id;
Rect dimensions;
uint32_t flags;
};
// rfb::ScreenSet
//
// Represents a complete screen configuration, excluding framebuffer
// dimensions.
struct ScreenSet {
ScreenSet(void) {};
typedef std::list<Screen>::iterator iterator;
typedef std::list<Screen>::const_iterator const_iterator;
inline iterator begin(void) { return screens.begin(); };
inline const_iterator begin(void) const { return screens.begin(); };
inline iterator end(void) { return screens.end(); };
inline const_iterator end(void) const { return screens.end(); };
inline int num_screens(void) const { return screens.size(); };
inline void add_screen(const Screen screen) { screens.push_back(screen); };
inline void remove_screen(uint32_t id) {
std::list<Screen>::iterator iter, nextiter;
for (iter = screens.begin();iter != screens.end();iter = nextiter) {
nextiter = iter; nextiter++;
if (iter->id == id)
screens.erase(iter);
}
}
inline bool validate(int fb_width, int fb_height) const {
std::list<Screen>::const_iterator iter;
std::set<uint32_t> seen_ids;
Rect fb_rect;
if (screens.empty())
return false;
if (num_screens() > 255)
return false;
fb_rect.setXYWH(0, 0, fb_width, fb_height);
for (iter = screens.begin();iter != screens.end();++iter) {
if (iter->dimensions.is_empty())
return false;
if (!iter->dimensions.enclosed_by(fb_rect))
return false;
if (seen_ids.find(iter->id) != seen_ids.end())
return false;
seen_ids.insert(iter->id);
}
return true;
};
inline void print(char* str, size_t len) const {
char buffer[128];
std::list<Screen>::const_iterator iter;
snprintf(buffer, sizeof(buffer), "%d screen(s)\n", num_screens());
str[0] = '\0';
strncat(str, buffer, len - 1 - strlen(str));
for (iter = screens.begin();iter != screens.end();++iter) {
snprintf(buffer, sizeof(buffer),
" %10d (0x%08x): %dx%d+%d+%d (flags 0x%08x)\n",
(int)iter->id, (unsigned)iter->id,
iter->dimensions.width(), iter->dimensions.height(),
iter->dimensions.tl.x, iter->dimensions.tl.y,
(unsigned)iter->flags);
strncat(str, buffer, len - 1 - strlen(str));
}
};
inline bool operator==(const ScreenSet& r) const {
std::list<Screen> a = screens;
a.sort(compare_screen);
std::list<Screen> b = r.screens;
b.sort(compare_screen);
return a == b;
};
inline bool operator!=(const ScreenSet& r) const { return !operator==(r); }
std::list<Screen> screens;
private:
static inline bool compare_screen(const Screen& first, const Screen& second)
{
return first.id < second.id;
}
};
};
#endif
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