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// XineramaBarriers
// ----------
// Copyright (C) 2011, Timur Kristóf
//
// This X client application will create pointer barriers
// based on the Xinerama information of your current driver.
// Only works with XFixes v5 or higher and the Xorg server
// which has the pointer barriers patch.
// ----------
// Licensed under the terms of the GPL
// ----------
#include "barriermanager.h"
#include <iostream>
#include <algorithm>
static std::ostream &operator<<(std::ostream &os, const XineramaScreenInfo &info)
{
return os << info.screen_number << " " << info.width << " " << info.height << " " << info.x_org << " " << info.y_org;
}
static std::vector<XineramaScreenInfo> fetchXineramaInfo(Display *d)
{
std::vector<XineramaScreenInfo> result;
int a;
XineramaScreenInfo *info = XineramaQueryScreens(d, &a);
for (int i = 0; i < a; i++)
{
result.push_back(info[i]);
std::cout << info[i] << std::endl;
}
XFree(info);
return result;
}
static bool compareY(const XineramaScreenInfo &i1, const XineramaScreenInfo &i2)
{
return i1.y_org < i2.y_org;
}
static bool compareX(const XineramaScreenInfo &i1, const XineramaScreenInfo &i2)
{
return i1.x_org < i2.x_org;
}
BarrierManager::BarrierManager(Display *d)
: d(d)
{
updateBarriers();
}
BarrierManager::~BarrierManager()
{
destroyBarriers();
}
void BarrierManager::destroyBarriers()
{
for (std::vector<PointerBarrier>::iterator i = barriers.begin(); i != barriers.end(); i++)
XFixesDestroyPointerBarrier(d, *i);
barriers.clear();
}
void BarrierManager::updateBarriers()
{
destroyBarriers();
XGetWindowAttributes(d, DefaultRootWindow(d), &attrs);
infos = fetchXineramaInfo(d);
std::cout << "updating barriers" << std::endl;
for (std::vector<XineramaScreenInfo>::iterator i = infos.begin(); i != infos.end(); i++)
{
if (i->x_org)
{
// Checking left neighbours
std::vector<XineramaScreenInfo> leftNeighbours;
for (std::vector<XineramaScreenInfo>::iterator j = infos.begin(); j != infos.end(); j++)
if (j->x_org + j->width == i->x_org)
leftNeighbours.push_back(*j);
std::sort(leftNeighbours.begin(), leftNeighbours.end(), compareY);
int startY = i->y_org;
int x = i->x_org;
// Adding barriers to the edge to the area where there are no neighbours
for (std::vector<XineramaScreenInfo>::iterator j = leftNeighbours.begin(); j != leftNeighbours.end(); j++)
{
if (j->y_org > startY)
{
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), x, startY, x, j->y_org, BarrierPositiveX, 0, 0));
std::cout << "left barrier created: x=" << x << " startY=" << startY << " y=" << j->y_org + j->height << std::endl;
}
startY = MIN(j->y_org + j->height, i->y_org + i->height);
}
if (startY < i->y_org + i->height)
{
// Adding a barrier to the remaining area where there are no more neighbours
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), x, startY, x, i->y_org + i->height, BarrierPositiveX, 0, 0));
std::cout << "left barrier created: x=" << x << " startY=" << startY << " y=" << i->y_org + i->height << std::endl;
}
}
if (i->x_org + i->width != attrs.width)
{
// checking right neighbours
std::vector<XineramaScreenInfo> rightNeighbours;
for (std::vector<XineramaScreenInfo>::iterator j = infos.begin(); j != infos.end(); j++)
if (i->x_org + i->width == j->x_org)
rightNeighbours.push_back(*j);
std::sort(rightNeighbours.begin(), rightNeighbours.end(), compareY);
int startY = i->y_org;
int x = i->x_org + i->width;
// Adding barriers to the edge to the area where there are no neighbours
for (std::vector<XineramaScreenInfo>::iterator j = rightNeighbours.begin(); j != rightNeighbours.end(); j++)
{
if (j->y_org > startY)
{
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), x, startY, x, j->y_org, BarrierNegativeX, 0, 0));
std::cout << "right barrier created: x=" << x << " startY=" << startY << " y=" << j->y_org << std::endl;
}
startY = MIN(j->y_org + j->height, i->y_org + i->height);
}
if (startY < i->y_org + i->height)
{
// Adding a barrier to the remaining area where there are no more neighbours
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), x, startY, x, i->y_org + i->height, BarrierNegativeX, 0, 0));
std::cout << "right barrier created: x=" << x << " startY=" << startY << " y=" << i->y_org + i->height << std::endl;
}
}
if (i->y_org)
{
// checking top neighbours
std::vector<XineramaScreenInfo> topNeighbours;
for (std::vector<XineramaScreenInfo>::iterator j = infos.begin(); j != infos.end(); j++)
if (j->y_org + j->height == i->y_org)
topNeighbours.push_back(*j);
std::sort(topNeighbours.begin(), topNeighbours.end(), compareX);
int startX = i->x_org;
int y = i->y_org;
// Adding barriers to the edge to the area where there are no neighbours
for (std::vector<XineramaScreenInfo>::iterator j = topNeighbours.begin(); j != topNeighbours.end(); j++)
{
if (j->x_org > startX)
{
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), startX, y, j->x_org, y, BarrierPositiveY, 0, 0));
std::cout << "top barrier created: y=" << y << " startX=" << startX << " X=" << j->x_org << std::endl;
}
startX = MIN(j->x_org + j->width, i->x_org + i->width);
}
if (startX < i->x_org + i->width)
{
// Adding a barrier to the remaining area where there are no more neighbours
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), startX, y, i->x_org + i->width, y, BarrierPositiveY, 0, 0));
std::cout << "top barrier created: y=" << y << " startX=" << startX << " X=" << i->x_org + i->width << std::endl;
}
}
if (i->y_org + i->height != attrs.height)
{
// checking bottom neighbours
std::vector<XineramaScreenInfo> bottomNeighbours;
for (std::vector<XineramaScreenInfo>::iterator j = infos.begin(); j != infos.end(); j++)
if (i->y_org + i->height == j->y_org)
bottomNeighbours.push_back(*j);
std::sort(bottomNeighbours.begin(), bottomNeighbours.end(), compareX);
int startX = i->x_org;
int y = i->y_org + i->height;
// Adding barriers to the edge to the area where there are no neighbours
for (std::vector<XineramaScreenInfo>::iterator j = bottomNeighbours.begin(); j != bottomNeighbours.end(); j++)
{
if (j->x_org > startX)
{
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), startX, y, j->x_org, y, BarrierNegativeY, 0, 0));
std::cout << "bottom barrier created: y=" << y << " startX=" << startX << " X=" << j->x_org << std::endl;
}
startX = MIN(j->x_org + j->width, i->x_org + i->width);
}
if (startX < i->x_org + i->width)
{
// Adding a barrier to the remaining area where there are no more neighbours
barriers.push_back(XFixesCreatePointerBarrier(d, DefaultRootWindow(d), startX, y, i->x_org + i->width, y, BarrierNegativeY, 0, 0));
std::cout << "bottom barrier created: y=" << y << " startX=" << startX << " X=" << i->x_org + i->width << std::endl;
}
}
}
}
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