Files
wxWidgets/src/x11/utils.cpp

405 lines
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C++

/////////////////////////////////////////////////////////////////////////////
// Name: src/x11/utils.cpp
// Purpose: Various utilities
// Author: Julian Smart
// Modified by:
// Created: 17/09/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if defined(__BORLANDC__)
#pragma hdrstop
#endif
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/utils.h"
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/window.h" // for wxTopLevelWindows
#include "wx/cursor.h"
#include "wx/msgdlg.h"
#endif
#include "wx/apptrait.h"
#include "wx/generic/private/timer.h"
#include "wx/evtloop.h"
#include <ctype.h>
#include <stdarg.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <pwd.h>
#include <errno.h>
// #include <netdb.h>
#include <signal.h>
#if (defined(__SUNCC__) || defined(__CLCC__))
#include <sysent.h>
#endif
#ifdef __VMS__
#pragma message disable nosimpint
#endif
#include "wx/unix/execute.h"
#include "wx/x11/private.h"
#include "X11/Xutil.h"
#ifdef __VMS__
#pragma message enable nosimpint
#endif
// ----------------------------------------------------------------------------
// async event processing
// ----------------------------------------------------------------------------
// Consume all events until no more left
void wxFlushEvents()
{
Display *display = (Display*) wxGetDisplay();
XSync (display, FALSE);
// TODO for X11
// ??
}
bool wxCheckForInterrupt(wxWindow *WXUNUSED(wnd))
{
wxFAIL_MSG(wxT("wxCheckForInterrupt not yet implemented."));
return false;
}
// ----------------------------------------------------------------------------
// misc
// ----------------------------------------------------------------------------
// Emit a beeeeeep
#ifndef __EMX__
// on OS/2, we use the wxBell from wxBase library (src/os2/utils.cpp)
void wxBell()
{
// Use current setting for the bell
XBell ((Display*) wxGetDisplay(), 0);
}
#endif
wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
{
// get X protocol version
Display *display = wxGlobalDisplay();
if (display)
{
if ( verMaj )
*verMaj = ProtocolVersion (display);
if ( verMin )
*verMin = ProtocolRevision (display);
}
return wxPORT_X11;
}
wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
{
return new wxEventLoop;
}
// ----------------------------------------------------------------------------
// display info
// ----------------------------------------------------------------------------
void wxGetMousePosition( int* x, int* y )
{
#if wxUSE_NANOX
// TODO
*x = 0;
*y = 0;
#else
XMotionEvent xev;
Window root, child;
XQueryPointer((Display*) wxGetDisplay(),
DefaultRootWindow((Display*) wxGetDisplay()),
&root, &child,
&(xev.x_root), &(xev.y_root),
&(xev.x), &(xev.y),
&(xev.state));
*x = xev.x_root;
*y = xev.y_root;
#endif
};
// Return true if we have a colour display
bool wxColourDisplay()
{
return wxDisplayDepth() > 1;
}
// Returns depth of screen
int wxDisplayDepth()
{
Display *dpy = (Display*) wxGetDisplay();
return DefaultDepth (dpy, DefaultScreen (dpy));
}
// Get size of display
void wxDisplaySize(int *width, int *height)
{
Display *dpy = (Display*) wxGetDisplay();
if ( width )
*width = DisplayWidth (dpy, DefaultScreen (dpy));
if ( height )
*height = DisplayHeight (dpy, DefaultScreen (dpy));
}
void wxDisplaySizeMM(int *width, int *height)
{
Display *dpy = (Display*) wxGetDisplay();
if ( width )
*width = DisplayWidthMM(dpy, DefaultScreen (dpy));
if ( height )
*height = DisplayHeightMM(dpy, DefaultScreen (dpy));
}
wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
{
return wxGenericFindWindowAtPoint(pt);
}
// Configurable display in wxX11 and wxMotif
static Display *gs_currentDisplay = NULL;
static wxString gs_displayName;
WXDisplay *wxGetDisplay()
{
return (WXDisplay *)gs_currentDisplay;
}
// close the current display
void wxCloseDisplay()
{
if ( gs_currentDisplay )
{
if ( XCloseDisplay(gs_currentDisplay) != 0 )
{
wxLogWarning(_("Failed to close the display \"%s\""),
gs_displayName.c_str());
}
gs_currentDisplay = NULL;
gs_displayName.clear();
}
}
bool wxSetDisplay(const wxString& displayName)
{
Display *dpy = XOpenDisplay
(
displayName.empty() ? NULL
: (const char *)displayName.mb_str()
);
if ( !dpy )
{
wxLogError(_("Failed to open display \"%s\"."), displayName.c_str());
return false;
}
wxCloseDisplay();
gs_currentDisplay = dpy;
gs_displayName = displayName;
return true;
}
wxString wxGetDisplayName()
{
return gs_displayName;
}
#include "wx/module.h"
// the module responsible for closing the X11 display at the program end
class wxX11DisplayModule : public wxModule
{
public:
virtual bool OnInit() { return true; }
virtual void OnExit() { wxCloseDisplay(); }
private:
DECLARE_DYNAMIC_CLASS(wxX11DisplayModule)
};
IMPLEMENT_DYNAMIC_CLASS(wxX11DisplayModule, wxModule)
// ----------------------------------------------------------------------------
// Some colour manipulation routines
// ----------------------------------------------------------------------------
void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
{
int h = hsv->h;
int s = hsv->s;
int v = hsv->v;
int r = 0, g = 0, b = 0;
int i, f;
int p, q, t;
s = (s * wxMAX_RGB) / wxMAX_SV;
v = (v * wxMAX_RGB) / wxMAX_SV;
if (h == 360) h = 0;
if (s == 0) { h = 0; r = g = b = v; }
i = h / 60;
f = h % 60;
p = v * (wxMAX_RGB - s) / wxMAX_RGB;
q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
switch (i)
{
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
rgb->red = r << 8;
rgb->green = g << 8;
rgb->blue = b << 8;
}
void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
{
int r = rgb->red >> 8;
int g = rgb->green >> 8;
int b = rgb->blue >> 8;
int maxv = wxMax3(r, g, b);
int minv = wxMin3(r, g, b);
int h = 0, s, v;
v = maxv;
if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
else s = 0;
if (s == 0) h = 0;
else
{
int rc, gc, bc, hex = 0;
rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
if (r == maxv) { h = bc - gc, hex = 0; }
else if (g == maxv) { h = rc - bc, hex = 2; }
else if (b == maxv) { h = gc - rc, hex = 4; }
h = hex * 60 + (h * 60 / wxMAX_RGB);
if (h < 0) h += 360;
}
hsv->h = h;
hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
}
void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
{
#if !wxUSE_NANOX
int llp;
int screen = DefaultScreen(d);
int num_colors = DisplayCells(d,screen);
XColor *color_defs = new XColor[num_colors];
for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
XQueryColors(d,cmp,color_defs,num_colors);
wxHSV hsv_defs, hsv;
wxXColorToHSV(&hsv,xc);
int diff, min_diff = 0, pixel = 0;
for(llp = 0;llp < num_colors;llp++)
{
wxXColorToHSV(&hsv_defs,&color_defs[llp]);
diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
if (llp == 0) min_diff = diff;
if (min_diff > diff) { min_diff = diff; pixel = llp; }
if (min_diff == 0) break;
}
xc -> red = color_defs[pixel].red;
xc -> green = color_defs[pixel].green;
xc -> blue = color_defs[pixel].blue;
xc -> flags = DoRed | DoGreen | DoBlue;
/* FIXME, TODO
if (!XAllocColor(d,cmp,xc))
cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
*/
delete[] color_defs;
#endif
}
void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
{
if (!XAllocColor(d,cmp,xc))
{
// cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
wxAllocNearestColor(d,cmp,xc);
}
}
wxString wxGetXEventName(XEvent& event)
{
#if wxUSE_NANOX
wxString str(wxT("(some event)"));
return str;
#else
int type = event.xany.type;
static char* event_name[] = {
"", "unknown(-)", // 0-1
"KeyPress", "KeyRelease", "ButtonPress", "ButtonRelease", // 2-5
"MotionNotify", "EnterNotify", "LeaveNotify", "FocusIn", // 6-9
"FocusOut", "KeymapNotify", "Expose", "GraphicsExpose", // 10-13
"NoExpose", "VisibilityNotify", "CreateNotify", // 14-16
"DestroyNotify", "UnmapNotify", "MapNotify", "MapRequest",// 17-20
"ReparentNotify", "ConfigureNotify", "ConfigureRequest", // 21-23
"GravityNotify", "ResizeRequest", "CirculateNotify", // 24-26
"CirculateRequest", "PropertyNotify", "SelectionClear", // 27-29
"SelectionRequest", "SelectionNotify", "ColormapNotify", // 30-32
"ClientMessage", "MappingNotify", // 33-34
"unknown(+)"}; // 35
type = wxMin(35, type); type = wxMax(1, type);
return wxString::FromAscii(event_name[type]);
#endif
}
bool wxWindowIsVisible(Window win)
{
XWindowAttributes wa;
XGetWindowAttributes(wxGlobalDisplay(), win, &wa);
return (wa.map_state == IsViewable);
}