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///////////////////////////////////////////////////////////////////////////////
// Name: wx/unix/private/displayx11.h
// Purpose: Helper functions used by wxX11 and wxGTK ports
// Author: Vadim Zeitlin
// Created: 2018-10-04 (extracted from src/unix/displayx11.cpp)
// Copyright: (c) 2002-2018 wxWindows team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_UNIX_PRIVATE_DISPLAYX11_H_
#define _WX_UNIX_PRIVATE_DISPLAYX11_H_
#include "wx/defs.h"
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#if wxUSE_DISPLAY
#include "wx/log.h"
#include "wx/translation.h"
#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
#include <X11/extensions/xf86vmode.h>
//
// See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
// info about xf86 video mode extensions
//
//free private data common to x (usually s3) servers
#define wxClearXVM(vm) if(vm.privsize) XFree(vm.c_private)
// Correct res rate from GLFW
#define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
#define wxCRR(v) wxCRR2(v,v.dotclock)
#define wxCVM2(v, dc, display, nScreen) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth(display, nScreen), wxCRR2(v,dc))
#define wxCVM(v, display, nScreen) wxCVM2(v, v.dotclock, display, nScreen)
wxArrayVideoModes wxXF86VidMode_GetModes(const wxVideoMode& mode, Display* display, int nScreen)
{
XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
int nNumModes; //Number of modes enumerated....
wxArrayVideoModes Modes; //modes to return...
if (XF86VidModeGetAllModeLines(display, nScreen, &nNumModes, &ppXModes))
{
for (int i = 0; i < nNumModes; ++i)
{
XF86VidModeModeInfo& info = *ppXModes[i];
const wxVideoMode vm = wxCVM(info, display, nScreen);
if (vm.Matches(mode))
{
Modes.Add(vm);
}
wxClearXVM(info);
// XFree(ppXModes[i]); //supposed to free?
}
XFree(ppXModes);
}
else //OOPS!
{
wxLogSysError(_("Failed to enumerate video modes"));
}
return Modes;
}
wxVideoMode wxXF86VidMode_GetCurrentMode(Display* display, int nScreen)
{
XF86VidModeModeLine VM;
int nDotClock;
if ( !XF86VidModeGetModeLine(display, nScreen, &nDotClock, &VM) )
return wxVideoMode();
wxClearXVM(VM);
return wxCVM2(VM, nDotClock, display, nScreen);
}
bool wxXF86VidMode_ChangeMode(const wxVideoMode& mode, Display* display, int nScreen)
{
XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
int nNumModes; //Number of modes enumerated....
if(!XF86VidModeGetAllModeLines(display, nScreen, &nNumModes, &ppXModes))
{
wxLogSysError(_("Failed to change video mode"));
return false;
}
bool bRet = false;
if (mode == wxDefaultVideoMode)
{
bRet = XF86VidModeSwitchToMode(display, nScreen, ppXModes[0]) != 0;
for (int i = 0; i < nNumModes; ++i)
{
wxClearXVM((*ppXModes[i]));
// XFree(ppXModes[i]); //supposed to free?
}
}
else
{
for (int i = 0; i < nNumModes; ++i)
{
if (!bRet &&
ppXModes[i]->hdisplay == mode.GetWidth() &&
ppXModes[i]->vdisplay == mode.GetHeight() &&
wxCRR((*ppXModes[i])) == mode.GetRefresh())
{
//switch!
bRet = XF86VidModeSwitchToMode(display, nScreen, ppXModes[i]) != 0;
}
wxClearXVM((*ppXModes[i]));
// XFree(ppXModes[i]); //supposed to free?
}
}
XFree(ppXModes);
return bRet;
}
#else // !HAVE_X11_EXTENSIONS_XF86VMODE_H
wxArrayVideoModes wxX11_GetModes(const wxDisplayImpl* impl, const wxVideoMode& modeMatch, Display* display)
{
int count_return;
int* depths = XListDepths(display, 0, &count_return);
wxArrayVideoModes modes;
if ( depths )
{
const wxRect rect = impl->GetGeometry();
for ( int x = 0; x < count_return; ++x )
{
wxVideoMode mode(rect.width, rect.height, depths[x]);
if ( mode.Matches(modeMatch) )
{
modes.Add(mode);
}
}
XFree(depths);
}
return modes;
}
#endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H
#endif // wxUSE_DISPLAY
void wxGetWorkAreaX11(Screen* screen, int& x, int& y, int& width, int& height)
{
Display* display = DisplayOfScreen(screen);
Atom property = XInternAtom(display, "_NET_WORKAREA", true);
if (property)
{
Atom actual_type;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char* data = NULL;
Status status = XGetWindowProperty(
display, RootWindowOfScreen(screen), property,
0, 4, false, XA_CARDINAL,
&actual_type, &actual_format, &nitems, &bytes_after, &data);
if (status == Success && actual_type == XA_CARDINAL &&
actual_format == 32 && nitems == 4)
{
const long* p = (long*)data;
x = p[0];
y = p[1];
width = p[2];
height = p[3];
}
if (data)
XFree(data);
}
}
#endif // _WX_UNIX_PRIVATE_DISPLAYX11_H_
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