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CNFGXDriver.c
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CNFGXDriver.c
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//Copyright (c) 2011, 2017, 2018 <>< Charles Lohr - Under the MIT/x11 or NewBSD License you choose.
//portions from
//http://www.xmission.com/~georgeps/documentation/tutorials/Xlib_Beginner.html
//#define HAS_XINERAMA
//#define CNFG_HAS_XSHAPE
//#define FULL_SCREEN_STEAL_FOCUS
#ifndef _CNFGXDRIVER_C
#define _CNFGXDRIVER_C
#include "CNFG.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#ifdef HAS_XINERAMA
#include <X11/extensions/shape.h>
#include <X11/extensions/Xinerama.h>
#endif
#ifdef CNFG_HAS_XSHAPE
#include <X11/extensions/shape.h>
static XGCValues xsval;
static Pixmap xspixmap;
static GC xsgc;
static int taint_shape;
static int prepare_xshape;
static int was_transp;
#endif
#ifdef CNFG_BATCH
void CNFGSetupBatchInternal();
#endif
XWindowAttributes CNFGWinAtt;
XClassHint *CNFGClassHint;
char * wm_res_name = 0;
char * wm_res_class = 0;
Display *CNFGDisplay;
Atom CFNGWMDeleteWindow;
Window CNFGWindow;
int CNFGWindowInvisible;
Pixmap CNFGPixmap;
GC CNFGGC;
GC CNFGWindowGC;
int CNFGDepth;
int CNFGScreen;
Visual * CNFGVisual;
VisualID CNFGVisualID;
#ifdef CNFGOGL
#include <GL/glx.h>
#include <GL/glxext.h>
GLXContext CNFGCtx;
void * CNFGGetExtension( const char * extname ) { return (void*)glXGetProcAddressARB((const GLubyte *) extname); }
GLXFBConfig CNFGGLXFBConfig;
GLXFBConfig* CNFGGLXFBConfigs;
void CNFGGLXSetup( )
{
int attribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DOUBLEBUFFER, True,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 1,
None };
int elements = 0;
GLXFBConfig * cfgs = glXChooseFBConfig( CNFGDisplay, CNFGScreen, attribs, &elements );
if( elements == 0 )
{
fprintf( stderr, "Error: could not get valid GLXFBConfig visual.\n" );
exit( -1 );
}
CNFGGLXFBConfigs = cfgs;
CNFGGLXFBConfig = cfgs[0];
XVisualInfo * vis = glXGetVisualFromFBConfig( CNFGDisplay, CNFGGLXFBConfig );
CNFGVisual = vis->visual;
CNFGVisualID = vis->visualid;
CNFGDepth = vis->depth;
CNFGCtx = glXCreateContext( CNFGDisplay, vis, NULL, True );
XFree( vis );
}
#endif
int CNFGX11ForceNoDecoration;
XImage *xi;
int g_x_global_key_state;
int g_x_global_shift_key;
void CNFGSetWindowIconData( int w, int h, uint32_t * data )
{
static Atom net_wm_icon;
static Atom cardinal;
if( !net_wm_icon ) net_wm_icon = XInternAtom( CNFGDisplay, "_NET_WM_ICON", False );
if( !cardinal ) cardinal = XInternAtom( CNFGDisplay, "CARDINAL", False );
unsigned long outdata[w*h];
int i;
for( i = 0; i < w*h; i++ )
{
outdata[i+2] = data[i];
}
outdata[0] = w;
outdata[1] = h;
XChangeProperty(CNFGDisplay, CNFGWindow, net_wm_icon, cardinal,
32, PropModeReplace, (const unsigned char*)outdata, 2 + w*h);
}
#ifdef CNFG_HAS_XSHAPE
void CNFGPrepareForTransparency() { prepare_xshape = 1; }
void CNFGDrawToTransparencyMode( int transp )
{
static Pixmap BackupCNFGPixmap;
static GC BackupCNFGGC;
if( was_transp && ! transp )
{
CNFGGC = BackupCNFGGC;
CNFGPixmap = BackupCNFGPixmap;
}
if( !was_transp && transp )
{
BackupCNFGPixmap = CNFGPixmap;
BackupCNFGGC = CNFGGC;
taint_shape = 1;
CNFGGC = xsgc;
CNFGPixmap = xspixmap;
}
was_transp = transp;
}
void CNFGClearTransparencyLevel()
{
taint_shape = 1;
XSetForeground(CNFGDisplay, xsgc, 0);
XFillRectangle(CNFGDisplay, xspixmap, xsgc, 0, 0, CNFGWinAtt.width, CNFGWinAtt.height);
XSetForeground(CNFGDisplay, xsgc, 1);
}
#endif
int FullScreen = 0;
void CNFGGetDimensions( short * x, short * y )
{
static int lastx;
static int lasty;
*x = CNFGWinAtt.width;
*y = CNFGWinAtt.height;
if( lastx != *x || lasty != *y )
{
lastx = *x;
lasty = *y;
#ifndef CNFGCONTEXTONLY
CNFGInternalResize( lastx, lasty );
#endif
}
}
void CNFGChangeWindowTitle( const char * WindowName )
{
XSetStandardProperties( CNFGDisplay, CNFGWindow, WindowName, 0, 0, 0, 0, 0 );
}
static void InternalLinkScreenAndGo( const char * WindowName )
{
XFlush(CNFGDisplay);
XGetWindowAttributes( CNFGDisplay, CNFGWindow, &CNFGWinAtt );
if( !wm_res_name ) wm_res_name = strdup( "rawdraw" );
if( !wm_res_class ) wm_res_class = strdup( "rawdraw" );
XGetClassHint( CNFGDisplay, CNFGWindow, CNFGClassHint );
if (!CNFGClassHint) {
CNFGClassHint = XAllocClassHint();
if (CNFGClassHint) {
CNFGClassHint->res_name = wm_res_name;
CNFGClassHint->res_class = wm_res_class;
XSetClassHint( CNFGDisplay, CNFGWindow, CNFGClassHint );
} else {
fprintf( stderr, "Failed to allocate XClassHint!\n" );
}
} else {
fprintf( stderr, "Pre-existing XClassHint\n" );
}
XSelectInput (CNFGDisplay, CNFGWindow, KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | ExposureMask | PointerMotionMask );
CNFGWindowGC = XCreateGC(CNFGDisplay, CNFGWindow, 0, 0);
if( CNFGX11ForceNoDecoration )
{
Atom window_type = XInternAtom(CNFGDisplay, "_NET_WM_WINDOW_TYPE", False);
long value = XInternAtom(CNFGDisplay, "_NET_WM_WINDOW_TYPE_SPLASH", False);
XChangeProperty(CNFGDisplay, CNFGWindow, window_type,
XA_ATOM, 32, PropModeReplace, (unsigned char *) &value,1 );
}
CNFGPixmap = XCreatePixmap( CNFGDisplay, CNFGWindow, CNFGWinAtt.width, CNFGWinAtt.height, CNFGWinAtt.depth );
CNFGGC = XCreateGC(CNFGDisplay, CNFGPixmap, 0, 0);
XSetLineAttributes(CNFGDisplay, CNFGGC, 1, LineSolid, CapRound, JoinRound);
CNFGChangeWindowTitle( WindowName );
if( !CNFGWindowInvisible )
XMapWindow(CNFGDisplay, CNFGWindow);
#ifdef CNFG_HAS_XSHAPE
if( prepare_xshape )
{
xsval.foreground = 1;
xsval.line_width = 1;
xsval.line_style = LineSolid;
xspixmap = XCreatePixmap(CNFGDisplay, CNFGWindow, CNFGWinAtt.width, CNFGWinAtt.height, 1);
xsgc = XCreateGC(CNFGDisplay, xspixmap, 0, &xsval);
XSetLineAttributes(CNFGDisplay, xsgc, 1, LineSolid, CapRound, JoinRound);
}
#endif
}
void CNFGSetupFullscreen( const char * WindowName, int screen_no )
{
#ifdef HAS_XINERAMA
XineramaScreenInfo *screeninfo = NULL;
int screens;
int event_basep, error_basep, a, b;
CNFGDisplay = XOpenDisplay(NULL);
CNFGScreen = XDefaultScreen(CNFGDisplay);
int xpos, ypos;
if (!XShapeQueryExtension(CNFGDisplay, &event_basep, &error_basep)) {
fprintf( stderr, "X-Server does not support shape extension\n" );
exit( 1 );
}
CNFGVisual = DefaultVisual(CNFGDisplay, CNFGScreen);
CNFGVisualID = 0;
CNFGWinAtt.depth = DefaultDepth(CNFGDisplay, CNFGScreen);
#ifdef CNFGOGL
CNFGGLXSetup();
#endif
if (XineramaQueryExtension(CNFGDisplay, &a, &b ) &&
(screeninfo = XineramaQueryScreens(CNFGDisplay, &screens)) &&
XineramaIsActive(CNFGDisplay) && screen_no >= 0 &&
screen_no < screens ) {
CNFGWinAtt.width = screeninfo[screen_no].width;
CNFGWinAtt.height = screeninfo[screen_no].height;
xpos = screeninfo[screen_no].x_org;
ypos = screeninfo[screen_no].y_org;
} else
{
CNFGWinAtt.width = XDisplayWidth(CNFGDisplay, CNFGScreen);
CNFGWinAtt.height = XDisplayHeight(CNFGDisplay, CNFGScreen);
xpos = 0;
ypos = 0;
}
if (screeninfo)
XFree(screeninfo);
XSetWindowAttributes setwinattr;
setwinattr.override_redirect = 1;
setwinattr.save_under = 1;
#ifdef CNFG_HAS_XSHAPE
if (prepare_xshape && !XShapeQueryExtension(CNFGDisplay, &event_basep, &error_basep))
{
fprintf( stderr, "X-Server does not support shape extension" );
exit( 1 );
}
setwinattr.event_mask = 0;
#else
//This code is probably made irrelevant by the XSetEventMask in InternalLinkScreenAndGo, if this code is not found needed by 2019-12-31, please remove.
//setwinattr.event_mask = StructureNotifyMask | SubstructureNotifyMask | ExposureMask | ButtonPressMask | ButtonReleaseMask | ButtonPressMask | PointerMotionMask | ButtonMotionMask | EnterWindowMask | LeaveWindowMask |KeyPressMask |KeyReleaseMask | SubstructureNotifyMask | FocusChangeMask;
#endif
setwinattr.border_pixel = 0;
setwinattr.colormap = XCreateColormap( CNFGDisplay, RootWindow(CNFGDisplay, 0), CNFGVisual, AllocNone);
CNFGWindow = XCreateWindow(CNFGDisplay, XRootWindow(CNFGDisplay, CNFGScreen),
xpos, ypos, CNFGWinAtt.width, CNFGWinAtt.height,
0, CNFGWinAtt.depth, InputOutput, CNFGVisual,
CWBorderPixel/* | CWEventMask */ | CWOverrideRedirect | CWSaveUnder | CWColormap,
&setwinattr);
FullScreen = 1;
InternalLinkScreenAndGo( WindowName );
#ifdef CNFGOGL
glXMakeCurrent( CNFGDisplay, CNFGWindow, CNFGCtx );
#endif
#ifdef CNFG_BATCH
#ifndef CNFGCONTEXTONLY
CNFGSetupBatchInternal();
#endif
#endif
#else
CNFGSetup( WindowName, 640, 480 );
#endif
}
void CNFGTearDown()
{
HandleDestroy();
if( xi ) free( xi );
if ( CNFGClassHint ) XFree( CNFGClassHint );
if ( CNFGGC ) XFreeGC( CNFGDisplay, CNFGGC );
if ( CNFGWindowGC ) XFreeGC( CNFGDisplay, CNFGWindowGC );
if ( CNFGDisplay ) XCloseDisplay( CNFGDisplay );
#ifdef CNFGOGL
if ( CNFGGLXFBConfigs ) XFree( CNFGGLXFBConfigs );
CNFGGLXFBConfigs = NULL;
#endif
CNFGDisplay = NULL;
CNFGWindowGC = CNFGGC = NULL;
CNFGClassHint = NULL;
CFNGWMDeleteWindow = None;
}
int CNFGSetupWMClass( const char * WindowName, int w, int h , char * wm_res_name_ , char * wm_res_class_ )
{
wm_res_name = wm_res_name_;
wm_res_class = wm_res_class_;
return CNFGSetup( WindowName, w, h);
}
int CNFGSetup( const char * WindowName, int w, int h )
{
CNFGDisplay = XOpenDisplay(NULL);
if ( !CNFGDisplay ) {
fprintf( stderr, "Could not get an X Display.\n%s",
"Are you in text mode or using SSH without X11-Forwarding?\n" );
exit( 1 );
}
atexit( CNFGTearDown );
CNFGScreen = DefaultScreen(CNFGDisplay);
CNFGDepth = DefaultDepth(CNFGDisplay, CNFGScreen);
CNFGVisual = DefaultVisual(CNFGDisplay, CNFGScreen);
CNFGVisualID = 0;
Window wnd = DefaultRootWindow( CNFGDisplay );
#ifdef CNFGOGL
CNFGGLXSetup( );
#endif
XSetWindowAttributes attr;
attr.background_pixel = 0;
attr.colormap = XCreateColormap( CNFGDisplay, wnd, CNFGVisual, AllocNone);
if( w > 0 && h > 0 )
CNFGWindow = XCreateWindow(CNFGDisplay, wnd, 1, 1, w, h, 0, CNFGDepth, InputOutput, CNFGVisual, CWBackPixel | CWColormap, &attr );
else
{
if( w < 0 ) w = -w;
if( h < 0 ) h = -h;
CNFGWindow = XCreateWindow(CNFGDisplay, wnd, 1, 1, w, h, 0, CNFGDepth, InputOutput, CNFGVisual, CWBackPixel | CWColormap, &attr );
CNFGWindowInvisible = 1;
}
InternalLinkScreenAndGo( WindowName );
//Not sure of the purpose of this code - if it's still commented out after 2019-12-31 and no one knows why, please delete it.
CFNGWMDeleteWindow = XInternAtom( CNFGDisplay, "WM_DELETE_WINDOW", False );
XSetWMProtocols( CNFGDisplay, CNFGWindow, &CFNGWMDeleteWindow, 1 );
#ifdef CNFGOGL
glXMakeCurrent( CNFGDisplay, CNFGWindow, CNFGCtx );
#endif
#ifdef CNFG_BATCH
#ifndef CNFGCONTEXTONLY
CNFGSetupBatchInternal();
#endif
#endif
return 0;
}
int CNFGHandleInput()
{
if( !CNFGWindow ) return 0;
static int ButtonsDown;
XEvent report;
int bKeyDirection = 1;
while( XPending( CNFGDisplay ) )
{
XNextEvent( CNFGDisplay, &report );
bKeyDirection = 1;
switch (report.type)
{
case NoExpose:
break;
case Expose:
XGetWindowAttributes( CNFGDisplay, CNFGWindow, &CNFGWinAtt );
if( CNFGPixmap ) XFreePixmap( CNFGDisplay, CNFGPixmap );
CNFGPixmap = XCreatePixmap( CNFGDisplay, CNFGWindow, CNFGWinAtt.width, CNFGWinAtt.height, CNFGWinAtt.depth );
if( CNFGGC ) XFreeGC( CNFGDisplay, CNFGGC );
CNFGGC = XCreateGC(CNFGDisplay, CNFGPixmap, 0, 0);
HandleKey( CNFG_X11_EXPOSE, 0 );
break;
case KeyRelease:
{
bKeyDirection = 0;
//Tricky - handle key repeats cleanly.
if( XPending( CNFGDisplay ) )
{
XEvent nev;
XPeekEvent( CNFGDisplay, &nev );
if (nev.type == KeyPress && nev.xkey.time == report.xkey.time && nev.xkey.keycode == report.xkey.keycode )
bKeyDirection = 2;
}
}
case KeyPress:
g_x_global_key_state = report.xkey.state;
g_x_global_shift_key = XLookupKeysym(&report.xkey, 1);
HandleKey( XLookupKeysym(&report.xkey, 0), bKeyDirection );
break;
case ButtonRelease:
bKeyDirection = 0;
case ButtonPress:
HandleButton( report.xbutton.x, report.xbutton.y, report.xbutton.button, bKeyDirection );
ButtonsDown = (ButtonsDown & (~(1<<report.xbutton.button))) | ( bKeyDirection << report.xbutton.button );
//Intentionall fall through -- we want to send a motion in event of a button as well.
case MotionNotify:
HandleMotion( report.xmotion.x, report.xmotion.y, ButtonsDown>>1 );
break;
case ClientMessage:
if ( report.xclient.data.l[0] == CFNGWMDeleteWindow )
return 0;
break;
default:
break;
//printf( "Event: %d\n", report.type );
}
}
return 1;
}
#ifdef CNFGOGL
void CNFGSetVSync( int vson )
{
void (*glfn)( int );
glfn = (void (*)( int ))CNFGGetExtension( "glXSwapIntervalMESA" ); if( glfn ) glfn( vson );
glfn = (void (*)( int ))CNFGGetExtension( "glXSwapIntervalSGI" ); if( glfn ) glfn( vson );
glfn = (void (*)( int ))CNFGGetExtension( "glXSwapIntervalEXT" ); if( glfn ) glfn( vson );
}
#ifdef CNFGRASTERIZER
void CNFGSwapBuffersInternal()
#else
void CNFGSwapBuffers()
#endif
{
if( CNFGWindowInvisible ) return;
#ifndef CNFGRASTERIZER
#ifndef CNFGCONTEXTONLY
CNFGFlushRender();
#endif
#endif
#ifdef CNFG_HAS_XSHAPE
if( taint_shape )
{
XShapeCombineMask(CNFGDisplay, CNFGWindow, ShapeBounding, 0, 0, xspixmap, ShapeSet);
taint_shape = 0;
}
#endif //CNFG_HAS_XSHAPE
glXSwapBuffers( CNFGDisplay, CNFGWindow );
#ifdef FULL_SCREEN_STEAL_FOCUS
if( FullScreen )
XSetInputFocus( CNFGDisplay, CNFGWindow, RevertToParent, CurrentTime );
#endif //FULL_SCREEN_STEAL_FOCUS
}
#else //CNFGOGL
#ifndef CNFGRASTERIZER
void CNFGBlitImage( uint32_t * data, int x, int y, int w, int h )
{
static int lw, lh;
if( lw != w || lh != h || !xi )
{
if( xi ) free( xi );
xi = XCreateImage(CNFGDisplay, CNFGVisual, CNFGDepth, ZPixmap, 0, (char*)data, w, h, 32, w*4 );
lw = w;
lh = h;
}
//Draw image to pixmap (not a screen flip)
XPutImage(CNFGDisplay, CNFGPixmap, CNFGGC, xi, 0, 0, x, y, w, h );
}
#endif
void CNFGUpdateScreenWithBitmap( uint32_t * data, int w, int h )
{
static int lw, lh;
if( lw != w || lh != h )
{
if( xi ) free( xi );
xi = XCreateImage(CNFGDisplay, CNFGVisual, CNFGDepth, ZPixmap, 0, (char*)data, w, h, 32, w*4 );
lw = w;
lh = h;
}
//Directly write image to screen (effectively a flip)
XPutImage(CNFGDisplay, CNFGWindow, CNFGWindowGC, xi, 0, 0, 0, 0, w, h );
}
#endif //CNFGOGL
#if !defined( CNFGOGL)
#define AGLF(x) x
#else
#define AGLF(x) static inline BACKEND_##x
#endif
#if defined( CNFGRASTERIZER )
#include "CNFGRasterizer.c"
#undef AGLF
#define AGLF(x) static inline BACKEND_##x
#endif
uint32_t AGLF(CNFGColor)( uint32_t RGB )
{
CNFGLastColor = RGB;
unsigned char red = ( RGB >> 24 ) & 0xFF;
unsigned char grn = ( RGB >> 16 ) & 0xFF;
unsigned char blu = ( RGB >> 8 ) & 0xFF;
unsigned long color = (red<<16)|(grn<<8)|(blu);
XSetForeground(CNFGDisplay, CNFGGC, color);
return color;
}
void AGLF(CNFGClearFrame)()
{
XGetWindowAttributes( CNFGDisplay, CNFGWindow, &CNFGWinAtt );
XSetForeground(CNFGDisplay, CNFGGC, CNFGColor(CNFGBGColor) );
XFillRectangle(CNFGDisplay, CNFGPixmap, CNFGGC, 0, 0, CNFGWinAtt.width, CNFGWinAtt.height );
}
void AGLF(CNFGSwapBuffers)()
{
#ifdef CNFG_HAS_XSHAPE
if( taint_shape )
{
XShapeCombineMask(CNFGDisplay, CNFGWindow, ShapeBounding, 0, 0, xspixmap, ShapeSet);
taint_shape = 0;
}
#endif
XCopyArea(CNFGDisplay, CNFGPixmap, CNFGWindow, CNFGWindowGC, 0,0,CNFGWinAtt.width,CNFGWinAtt.height,0,0);
XFlush(CNFGDisplay);
#ifdef FULL_SCREEN_STEAL_FOCUS
if( FullScreen )
XSetInputFocus( CNFGDisplay, CNFGWindow, RevertToParent, CurrentTime );
#endif
}
void AGLF(CNFGTackSegment)( short x1, short y1, short x2, short y2 )
{
if( x1 == x2 && y1 == y2 )
{
//On some targets, zero-length lines will not show up.
//This is tricky - since this will also cause more draw calls for points on systems like GLAMOR.
XDrawPoint( CNFGDisplay, CNFGPixmap, CNFGGC, x2, y2 );
}
else
{
//XXX HACK! See discussion here: https://github.com/cntools/cnping/issues/68
XDrawLine( CNFGDisplay, CNFGPixmap, CNFGGC, x1, y1, x2, y2 );
XDrawLine( CNFGDisplay, CNFGPixmap, CNFGGC, x2, y2, x1, y1 );
}
}
void AGLF(CNFGTackPixel)( short x1, short y1 )
{
XDrawPoint( CNFGDisplay, CNFGPixmap, CNFGGC, x1, y1 );
}
void AGLF(CNFGTackRectangle)( short x1, short y1, short x2, short y2 )
{
XFillRectangle(CNFGDisplay, CNFGPixmap, CNFGGC, x1, y1, x2-x1, y2-y1 );
}
void AGLF(CNFGTackPoly)( RDPoint * points, int verts )
{
XFillPolygon(CNFGDisplay, CNFGPixmap, CNFGGC, (XPoint *)points, verts, Convex, CoordModeOrigin );
}
void AGLF(CNFGInternalResize)( short x, short y ) { }
void AGLF(CNFGSetLineWidth)( short width )
{
XSetLineAttributes(CNFGDisplay, CNFGGC, width, LineSolid, CapRound, JoinRound);
}
#endif // _CNFGXDRIVER_C