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vlc/modules/gui/skins2/x11/x11_display.cpp

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/*****************************************************************************
* x11_display.cpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@via.ecp.fr>
*
* 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.
*****************************************************************************/
#ifdef X11_SKINS
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/xpm.h>
#include <X11/extensions/shape.h>
#include "x11_display.hpp"
#include "../src/logger.hpp"
#include "../share/icons/32x32/vlc.xpm"
template<class type> type X11Display::putPixel(type r, type g, type b) const
{
return ( (r >> m_redRightShift) << m_redLeftShift ) |
( (g >> m_greenRightShift) << m_greenLeftShift ) |
( (b >> m_blueRightShift) << m_blueLeftShift );
}
template<class type>
type X11Display::blendPixel(type v,type r, type g, type b, type a) const
{
uint16_t temp;
temp = ((uint8_t)((v >> m_redLeftShift) << m_redRightShift));
uint8_t red = r + ( temp * (255 - a) ) / 255;
temp = ((uint8_t)((v >> m_greenLeftShift) << m_greenRightShift));
uint8_t green = g + ( temp * (255 - a) ) / 255;
temp = ((uint8_t)((v >> m_blueLeftShift) << m_blueRightShift));
uint8_t blue = b + ( temp * (255 - a) ) / 255;
return putPixel<type>(red,green,blue);
}
X11Display::X11Display( intf_thread_t *pIntf ): SkinObject( pIntf ),
m_mainWindow( 0 ), m_gc( NULL ), m_colormap( 0 )
{
// Open a connection to the X Server
m_pDisplay = XOpenDisplay( NULL );
if( m_pDisplay == NULL )
{
msg_Dbg( pIntf, "Cannot open X display" );
return;
}
// Load the XShape extension
int event, error;
XShapeQueryExtension( m_pDisplay, &event, &error );
// Get the display parameters
int screen = DefaultScreen( m_pDisplay );
int depth = DefaultDepth( m_pDisplay, screen );
int order = ImageByteOrder( m_pDisplay );
Window root = DefaultRootWindow( m_pDisplay );
// Template for looking up the XVisualInfo
XVisualInfo xVInfoTemplate;
xVInfoTemplate.screen = screen;
xVInfoTemplate.depth = depth;
XVisualInfo *pVInfo = NULL;
int vCount = 0;
switch( depth )
{
case 8:
xVInfoTemplate.c_class = DirectColor;
// Get the DirectColor visual
pVInfo = XGetVisualInfo( m_pDisplay, VisualScreenMask |
VisualClassMask, &xVInfoTemplate,
&vCount );
if( pVInfo == NULL )
{
msg_Err( getIntf(), "no DirectColor visual available" );
m_pDisplay = NULL;
break;
}
m_pVisual = pVInfo->visual;
// Compute the color shifts
getShifts( pVInfo->red_mask, m_redLeftShift, m_redRightShift );
getShifts( pVInfo->green_mask, m_greenLeftShift,
m_greenRightShift );
getShifts( pVInfo->blue_mask, m_blueLeftShift, m_blueRightShift );
// Create a color map
m_colormap = XCreateColormap( m_pDisplay, root,
DefaultVisual( m_pDisplay, screen ), AllocAll );
// Create the palette
XColor pColors[255];
for( uint16_t i = 0; i < 255; i++ )
{
// kludge: colors are indexed reversely because color 255 seems
// to bereserved for black even if we try to set it to white
pColors[i].pixel = 254-i;
pColors[i].pad = 0;
pColors[i].flags = DoRed | DoGreen | DoBlue;
pColors[i].red =
(i >> m_redLeftShift) << (m_redRightShift + 8);
pColors[i].green =
(i >> m_greenLeftShift) << (m_greenRightShift + 8);
pColors[i].blue =
(i >> m_blueLeftShift) << (m_blueRightShift + 8);
}
XStoreColors( m_pDisplay, m_colormap, pColors, 255 );
blendPixelImpl = &X11Display::blendPixel8;
putPixelImpl = &X11Display::putPixel8;
m_pixelSize = 1;
break;
case 15:
case 16:
case 24:
case 32:
// Get the TrueColor visual
xVInfoTemplate.c_class = TrueColor;
pVInfo = XGetVisualInfo( m_pDisplay, VisualScreenMask |
VisualDepthMask | VisualClassMask,
&xVInfoTemplate, &vCount );
if( pVInfo == NULL )
{
msg_Err( getIntf(), "No TrueColor visual for depth %d", depth );
m_pDisplay = NULL;
break;
}
m_pVisual = pVInfo->visual;
// Compute the color shifts
getShifts( pVInfo->red_mask, m_redLeftShift, m_redRightShift );
getShifts( pVInfo->green_mask, m_greenLeftShift, m_greenRightShift );
getShifts( pVInfo->blue_mask, m_blueLeftShift, m_blueRightShift );
if( depth == 15 || depth == 16 )
{
if( order == MSBFirst )
{
blendPixelImpl = &X11Display::blendPixel16MSB;
putPixelImpl = &X11Display::putPixel16MSB;
}
else
{
blendPixelImpl = &X11Display::blendPixel16LSB;
putPixelImpl = &X11Display::putPixel16LSB;
}
m_pixelSize = 2;
}
else
{
if( order == MSBFirst )
{
blendPixelImpl = &X11Display::blendPixel32MSB;
putPixelImpl = &X11Display::putPixel32MSB;
}
else
{
blendPixelImpl = &X11Display::blendPixel32LSB;
putPixelImpl = &X11Display::putPixel32LSB;
}
m_pixelSize = 4;
}
break;
default:
msg_Err( getIntf(), "unsupported depth: %d bpp", depth );
m_pDisplay = NULL;
break;
}
// Free the visual info
if( pVInfo )
{
XFree( pVInfo );
}
// Create a graphics context that doesn't generate GraphicsExpose events
if( m_pDisplay )
{
XGCValues xgcvalues;
xgcvalues.graphics_exposures = False;
m_gc = XCreateGC( m_pDisplay, root, GCGraphicsExposures, &xgcvalues );
// Create a parent window to have a single task in the task bar
XSetWindowAttributes attr;
m_mainWindow = XCreateWindow( m_pDisplay, root, 0, 0, 1, 1, 0, 0,
InputOutput, CopyFromParent, 0, &attr );
// initialize WM_CLASS
XClassHint classhint;
classhint.res_name = (char*) "vlc";
classhint.res_class = (char*) "Vlc";
XSetClassHint( m_pDisplay, m_mainWindow, &classhint );
// Receive WM_DELETE_WINDOW
Atom wm_delete = XInternAtom( m_pDisplay, "WM_DELETE_WINDOW", False);
XSetWMProtocols( m_pDisplay, m_mainWindow, &wm_delete, 1);
// Changing decorations
struct {
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} motifWmHints;
Atom hints_atom = XInternAtom( m_pDisplay, "_MOTIF_WM_HINTS", False );
motifWmHints.flags = 2; // MWM_HINTS_DECORATIONS;
motifWmHints.decorations = 0;
XChangeProperty( m_pDisplay, m_mainWindow, hints_atom, hints_atom, 32,
PropModeReplace, (unsigned char *)&motifWmHints,
sizeof( motifWmHints ) / sizeof( long ) );
// Change the window title
XStoreName( m_pDisplay, m_mainWindow, "VLC Media Player" );
// Add an icon
Pixmap icon_pixmap, shape_pixmap;
int ret = XpmCreatePixmapFromData( m_pDisplay, root, (char**)vlc_xpm,
&icon_pixmap, &shape_pixmap, NULL );
if( ret == XpmSuccess )
{
XWMHints *wm = XAllocWMHints();
if( wm )
{
wm->icon_pixmap = icon_pixmap;
wm->icon_mask = shape_pixmap;
wm->flags = (IconPixmapHint|IconMaskHint);
XSetWMHints( m_pDisplay, m_mainWindow, wm );
XFree( wm );
}
}
else
{
msg_Err( getIntf(), "icon failed to be loaded (err=%i)", ret );
}
// Receive map notify events
XSelectInput( m_pDisplay, m_mainWindow, StructureNotifyMask );
// Set an empty mask for the window
Region mask = XCreateRegion();
XShapeCombineRegion( m_pDisplay, m_mainWindow, ShapeBounding, 0, 0,
mask, ShapeSet );
XDestroyRegion( mask );
// test EWMH capabilities
testEWMH();
// Try to avoid tiling window managers treating us like a normal window
if( m_net_wm_window_type != None )
{
XChangeProperty( m_pDisplay, m_mainWindow, m_net_wm_window_type,
XA_ATOM, 32, PropModeReplace,
(unsigned char *)&m_net_wm_window_type_utility, 1 );
}
XMapWindow( m_pDisplay, m_mainWindow);
// Move it outside the screen to avoid seeing it in workspace selector
XMoveWindow( m_pDisplay, m_mainWindow, -10, -10 );
// Force _NET_WM_PID whatever the WM _NET_SUPPORTED says
m_net_wm_pid = XInternAtom( m_pDisplay, "_NET_WM_PID" , False );
}
}
X11Display::~X11Display()
{
if( m_mainWindow ) XDestroyWindow( m_pDisplay, m_mainWindow );
if( m_gc ) XFreeGC( m_pDisplay, m_gc );
if( m_colormap ) XFreeColormap( m_pDisplay, m_colormap );
if( m_pDisplay ) XCloseDisplay( m_pDisplay );
}
void X11Display::testEWMH()
{
int i_ret, i_format;
unsigned long i_items, i_bytesafter;
union { Atom *p_atom; unsigned char *p_char; } p_args;
p_args.p_atom = NULL;
m_net_wm_supported = XInternAtom( m_pDisplay, "_NET_SUPPORTED", False );
msg_Dbg( getIntf(), "EWMH: supported %d", m_net_wm_supported != None ? 1 : 0 );
if( m_net_wm_supported == None )
return;
i_ret = XGetWindowProperty( m_pDisplay, DefaultRootWindow( m_pDisplay ),
m_net_wm_supported,
0, 16384, False, AnyPropertyType,
&m_net_wm_supported,
&i_format, &i_items, &i_bytesafter,
(unsigned char **)&p_args );
if( i_ret != Success || i_items == 0 )
return; /* Not supported */
#define TEST_EWMH( name, value ) \
{\
name = XInternAtom( m_pDisplay, value, False );\
unsigned int i;\
for( i = 0; i < i_items; i++ )\
{\
if( p_args.p_atom[i] == name ) break;\
}\
if( i == i_items )\
{\
msg_Dbg( getIntf(), "%s support: no", value );\
name = None;\
}\
else\
msg_Dbg( getIntf(), "%s support: yes", value );\
}
TEST_EWMH( m_net_wm_window_type, "_NET_WM_WINDOW_TYPE" )
TEST_EWMH( m_net_wm_window_type_normal, "_NET_WM_WINDOW_TYPE_NORMAL" )
TEST_EWMH( m_net_wm_window_type_utility, "_NET_WM_WINDOW_TYPE_UTILITY" )
TEST_EWMH( m_net_wm_state, "_NET_WM_STATE" )
TEST_EWMH( m_net_wm_state_fullscreen, "_NET_WM_STATE_FULLSCREEN" )
TEST_EWMH( m_net_wm_stays_on_top, "_NET_WM_STATE_STAYS_ON_TOP" )
TEST_EWMH( m_net_wm_state_above, "_NET_WM_STATE_ABOVE" )
TEST_EWMH( m_net_wm_window_opacity, "_NET_WM_WINDOW_OPACITY" )
TEST_EWMH( m_net_wm_pid, "_NET_WM_PID" )
TEST_EWMH( m_net_workarea, "_NET_WORKAREA" )
#undef TEST_EWMH
XFree( p_args.p_atom );
}
void X11Display::getShifts( uint32_t mask, int &rLeftShift, int &rRightShift )
{
for( rLeftShift = 0; (rLeftShift < 32) && !(mask & 1); rLeftShift++ )
{
mask >>= 1;
}
for( rRightShift = 8; (mask & 1) ; rRightShift--)
{
mask >>= 1;
}
if( rRightShift < 0 )
{
rLeftShift -= rRightShift;
rRightShift = 0;
}
}
void X11Display::blendPixel8( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
*pPixel = 255 - blendPixel<uint8_t>(255 - *pPixel,r,g,b,a);
}
void X11Display::blendPixel16MSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
uint16_t value = pPixel[1] | pPixel[0] << 8;
value = blendPixel<uint16_t>(value,r,g,b,a);
pPixel[1] = value; value >>= 8;
pPixel[0] = value;
}
void X11Display::blendPixel16LSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
uint16_t value = pPixel[0] | pPixel[1] << 8;
value = blendPixel<uint16_t>(value,r,g,b,a);
pPixel[0] = value; value >>= 8;
pPixel[1] = value;
}
void X11Display::blendPixel32MSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
uint32_t value = pPixel[3] | pPixel[2] << 8 |
pPixel[1] << 16 | pPixel[0] << 24;
value = blendPixel<uint32_t>(value,r,g,b,a);
pPixel[3] = value; value >>= 8;
pPixel[2] = value; value >>= 8;
pPixel[1] = value; value >>= 8;
pPixel[0] = value;
}
void X11Display::blendPixel32LSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
uint32_t value = pPixel[0] | pPixel[1] << 8 |
pPixel[2] << 16 | pPixel[3] << 24;
value = blendPixel<uint32_t>(value,r,g,b,a);
pPixel[0] = value; value >>= 8;
pPixel[1] = value; value >>= 8;
pPixel[2] = value; value >>= 8;
pPixel[3] = value;
}
void X11Display::putPixel8( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
(void)a;
*pPixel = 255 - putPixel<uint8_t>(r,g,b);
}
void X11Display::putPixel16MSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
(void)a;
uint16_t value = putPixel<uint16_t>(r, g, b);
pPixel[1] = value; value >>= 8;
pPixel[0] = value;
}
void X11Display::putPixel16LSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
(void)a;
uint16_t value = putPixel<uint16_t>(r,g,b);
pPixel[0] = value; value >>= 8;
pPixel[1] = value;
}
void X11Display::putPixel32MSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
(void)a;
uint32_t value = putPixel<uint32_t>(r,g,b);
pPixel[3] = value; value >>= 8;
pPixel[2] = value; value >>= 8;
pPixel[1] = value; value >>= 8;
pPixel[0] = value;
}
void X11Display::putPixel32LSB( uint8_t *pPixel, uint8_t r, uint8_t g,
uint8_t b, uint8_t a ) const
{
(void)a;
uint32_t value = putPixel<uint32_t>(r,g,b);
pPixel[0] = value; value >>= 8;
pPixel[1] = value; value >>= 8;
pPixel[2] = value; value >>= 8;
pPixel[3] = value;
}
unsigned long X11Display::getPixelValue( uint8_t r, uint8_t g, uint8_t b )
const
{
unsigned long value = putPixel<unsigned long>(r,g,b);
return m_pixelSize==1 ? 255 - value : value;
}
#endif
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