/*

* screen.c - screen management

*

* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>

*

* 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.

*

*/

#include "screen.h"

#include "tag.h"

#include "focus.h"

#include "client.h"

#include "layouts/floating.h"

extern AwesomeConf globalconf;

/** Get screens info

* \param screen Screen number

* \param statusbar statusbar

* \param padding Padding

* \return area_t

*/

area_t

screen_get_area(int screen, Statusbar *statusbar, Padding *padding)

{

area_t area = globalconf.screens_info->geometry[screen];

Statusbar *sb;

/* make padding corrections */

if(padding)

{

area.x += padding->left;

area.y += padding->top;

area.width -= padding->left + padding->right;

area.height -= padding->top + padding->bottom;

}

for(sb = statusbar; sb; sb = sb->next)

switch(sb->position)

{

case Top:

area.y += sb->height;

case Bottom:

area.height -= sb->height;

break;

case Left:

area.x += sb->height;

case Right:

area.width -= sb->height;

break;

default:

break;

}

return area;

}

/** Get display info

* \param screen Screen number

* \param statusbar the statusbar

* \param padding Padding

* \return area_t

*/

area_t

get_display_area(int screen, Statusbar *statusbar, Padding *padding)

{

area_t area = { 0, 0, 0, 0, NULL, NULL };

Statusbar *sb;

area.width = DisplayWidth(globalconf.display, screen);

area.height = DisplayHeight(globalconf.display, screen);

for(sb = statusbar; sb; sb = sb->next)

{

area.y += sb->position == Top ? sb->height : 0;

area.height -= (sb->position == Top || sb->position == Bottom) ? sb->height : 0;

}

/* make padding corrections */

if(padding)

{

area.x += padding->left;

area.y += padding->top;

area.width -= padding->left + padding->right;

area.height -= padding->top + padding->bottom;

}

return area;

}

/** This returns the real X screen number for a logical

* screen if Xinerama is active.

* \param screen the logical screen

* \return the X screen

*/

int

screen_virttophys(int screen)

{

if(globalconf.screens_info->xinerama_is_active)

return DefaultScreen(globalconf.display);

return screen;

}

/** Move a client to a virtual screen

* \param c the client

* \param new_screen The destinatiuon screen

* \param doresize set to True if we also move the client to the new x and

* y of the new screen

*/

void

move_client_to_screen(Client *c, int new_screen, Bool doresize)

{

Tag *tag;

int old_screen = c->screen;

area_t from, to;

for(tag = globalconf.screens[old_screen].tags; tag; tag = tag->next)

untag_client(c, tag);

c->screen = new_screen;

/* tag client with new screen tags */

tag_client_with_current_selected(c);

/* resize the windows if it's floating */

if(doresize && old_screen != c->screen)

{

area_t new_geometry, new_f_geometry;

new_f_geometry = c->f_geometry;

to = screen_get_area(c->screen, NULL, NULL);

from = screen_get_area(old_screen, NULL, NULL);

/* compute new coords in new screen */

new_f_geometry.x = (c->f_geometry.x - from.x) + to.x;

new_f_geometry.y = (c->f_geometry.y - from.y) + to.y;

/* check that new coords are still in the screen */

if(new_f_geometry.width > to.width)

new_f_geometry.width = to.width;

if(new_f_geometry.height > to.height)

new_f_geometry.height = to.height;

if(new_f_geometry.x + new_f_geometry.width >= to.x + to.width)

new_f_geometry.x = to.x + to.width - new_f_geometry.width - 2 * c->border;

if(new_f_geometry.y + new_f_geometry.height >= to.y + to.height)

new_f_geometry.y = to.y + to.height - new_f_geometry.height - 2 * c->border;

if(c->ismax)

{

new_geometry = c->geometry;

/* compute new coords in new screen */

new_geometry.x = (c->geometry.x - from.x) + to.x;

new_geometry.y = (c->geometry.y - from.y) + to.y;

/* check that new coords are still in the screen */

if(new_geometry.width > to.width)

new_geometry.width = to.width;

if(new_geometry.height > to.height)

new_geometry.height = to.height;

if(new_geometry.x + new_geometry.width >= to.x + to.width)

new_geometry.x = to.x + to.width - new_geometry.width - 2 * c->border;

if(new_geometry.y + new_geometry.height >= to.y + to.height)

new_geometry.y = to.y + to.height - new_geometry.height - 2 * c->border;

/* compute new coords for max in new screen */

c->m_geometry.x = (c->m_geometry.x - from.x) + to.x;

c->m_geometry.y = (c->m_geometry.y - from.y) + to.y;

/* check that new coords are still in the screen */

if(c->m_geometry.width > to.width)

c->m_geometry.width = to.width;

if(c->m_geometry.height > to.height)

c->m_geometry.height = to.height;

if(c->m_geometry.x + c->m_geometry.width >= to.x + to.width)

c->m_geometry.x = to.x + to.width - c->m_geometry.width - 2 * c->border;

if(c->m_geometry.y + c->m_geometry.height >= to.y + to.height)

c->m_geometry.y = to.y + to.height - c->m_geometry.height - 2 * c->border;

client_resize(c, new_geometry, False);

}

/* if floating, move to this new coords */

else if(c->isfloating)

client_resize(c, new_f_geometry, False);

/* otherwise just register them */

else

{

c->f_geometry = new_f_geometry;

globalconf.screens[old_screen].need_arrange = True;

globalconf.screens[c->screen].need_arrange = True;

}

}

}

/** Move mouse pointer to x_org and y_xorg of specified screen

* \param screen screen number

*/

static void

move_mouse_pointer_to_screen(int phys_screen)

{

if(globalconf.screens_info->xinerama_is_active)

{

area_t area = screen_get_area(phys_screen, NULL, NULL);

XWarpPointer(globalconf.display,

None,

DefaultRootWindow(globalconf.display),

0, 0, 0, 0, area.x, area.y);

}

else

XWarpPointer(globalconf.display,

None,

RootWindow(globalconf.display, phys_screen),

0, 0, 0, 0, 0, 0);

}

/** Switch focus to a specified screen.

* Argument must be an absolute or relative screen number.

* \param screen Screen ID

* \param arg screen number

* \ingroup ui_callback

*/

void

uicb_screen_focus(int screen, char *arg)

{

int new_screen;

if(arg)

new_screen = compute_new_value_from_arg(arg, screen);

else

new_screen = screen + 1;

if (new_screen < 0)

new_screen = globalconf.screens_info->nscreen - 1;

if (new_screen > (globalconf.screens_info->nscreen - 1))

new_screen = 0;

client_focus(NULL, new_screen, True);

move_mouse_pointer_to_screen(new_screen);

}

/** Move client to a screen.

* Argument must be an absolute or relative screen number.

* \param screen Screen ID

* \param arg screen number

* \ingroup ui_callback

*/

void

uicb_client_movetoscreen(int screen __attribute__ ((unused)), char *arg)

{

int new_screen, prev_screen;

Client *sel = globalconf.focus->client;

if(!sel || !globalconf.screens_info->xinerama_is_active)

return;

if(arg)

new_screen = compute_new_value_from_arg(arg, sel->screen);

else

new_screen = sel->screen + 1;

if(new_screen >= globalconf.screens_info->nscreen)

new_screen = 0;

else if(new_screen < 0)

new_screen = globalconf.screens_info->nscreen - 1;

prev_screen = sel->screen;

move_client_to_screen(sel, new_screen, True);

move_mouse_pointer_to_screen(new_screen);

client_focus(sel, sel->screen, True);

}

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