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xwin.cc
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xwin.cc
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#include "xwin.h"
#include "Xrm.h"
#include <X11/Xatom.h>
#include <X11/xpm.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <iostream>
//-----------------------------------------------------------------------------
// argc is a reference, so that the changes to argc by XrmParseCommand are
// noticed by the caller (XOSView, in this case). BCG
XWin::XWin() {
}
//-----------------------------------------------------------------------------
XWin::XWin( int argc, char *argv[], int x, int y, int width, int height ) {
std::cerr << "This constructor call is not supported! (" << __FILE__
<< ":" << __LINE__ << ")" << std::endl;
exit (-1);
// FIXME BCG This constructor needs to do much of the work of the above
// one. Or, we need to drop this as a constructor. As it is, it is
// VERY MUCH out of date.
x_ = x;
y_ = y;
width_ = width;
height_ = height;
(void) argc;
(void) argv;
}
//-----------------------------------------------------------------------------
void XWin::XWinInit (int argc, char** argv, char* geometry, Xrm* xrm) {
(void) argc;
(void) argv; // Avoid gcc warnings about unused variables.
// Eventually, we may want to have XWin handle some arguments other
// than resources, so argc and argv are left as parameters. BCG
geometry_ = geometry; // Save for later use.
width_ = height_ = x_ = y_ = 0;
xrmptr_ = xrm;
name_ = (char *)malloc(0);
font_ = NULL;
done_ = 0;
// Set up the default Events
events_ = NULL;
addEvent( new Event( this, ClientMessage, &XWin::deleteEvent ) );
addEvent( new Event( this, MappingNotify, &XWin::mappingNotify ) );
//openDisplay(); // Done explicitly in xosview.cc.
}
XWin::~XWin( void ){
// delete the events
Event *event = events_;
while ( event != NULL ){
Event *save = event->next_;
delete event;
event = save;
}
XFree( title_.value );
XFree( iconname_.value );
XFree( sizehints_ );
XFree( wmhints_ );
XFree( classhints_ );
XFreeGC( display_, gc_ );
XFreeFont( display_, font_ );
XDestroyWindow( display_, window_ );
// close the connection to the display
XCloseDisplay( display_ );
}
//-----------------------------------------------------------------------------
void XWin::init( int argc, char **argv ){
XGCValues gcv;
XSetWindowAttributes xswa;
Pixmap background_pixmap;
setFont();
setColors();
getGeometry();
borderwidth_ = atoi(getResourceOrUseDefault("borderwidth", "1"));
window_ = XCreateSimpleWindow(display_, DefaultRootWindow(display_),
sizehints_->x, sizehints_->y,
sizehints_->width, sizehints_->height,
borderwidth_,
fgcolor_, bgcolor_);
setHints( argc, argv );
// Finally, create a graphics context for the main window
gcv.font = font_->fid;
gcv.foreground = fgcolor_;
gcv.background = bgcolor_;
gc_ = XCreateGC(display_, window_,
(GCFont | GCForeground | GCBackground), &gcv);
// Set main window's attributes (colormap, bit_gravity)
xswa.colormap = colormap_;
xswa.bit_gravity = NorthWestGravity;
XChangeWindowAttributes(display_, window_,
(CWColormap | CWBitGravity), &xswa);
// If there is a pixmap file, set it as the background
if (getPixmap(&background_pixmap))
XSetWindowBackgroundPixmap(display_,window_,background_pixmap);
// add the events
Event *tmp = events_;
while ( tmp != NULL ){
selectEvents( tmp->mask_ );
tmp = tmp->next_;
}
// Map the main window
map();
flush();
if(XGetWindowAttributes(display_, window_, &attr_) == 0){
std::cerr <<"Error getting attributes of Main." <<std::endl;
exit(2);
}
// Create stipple pixmaps.
stipples_[0] = createPixmap("\000\000", 2, 2);
stipples_[1] = createPixmap("\002\000\001\000", 2, 4);
stipples_[2] = createPixmap("\002\001", 2, 2);
stipples_[3] = createPixmap("\002\003\001\003", 2, 4);
doStippling_ = isResourceTrue("enableStipple");
}
//-----------------------------------------------------------------------------
void XWin::setFont( void ){
// Set up the font
if ( font_ != NULL )
return;
const char* fontName = getResource("font");
if ((font_ = XLoadQueryFont(display_, fontName)) == NULL){
std::cerr <<name_ <<": font \"" << fontName
<< "\" does not exist; see xlsfonts(1)"
<< std::endl;
exit(1);
}
}
//-----------------------------------------------------------------------------
void XWin::setHints( int argc, char *argv[] ){
// Set up class hint
if((classhints_ = XAllocClassHint()) == NULL){
std::cerr <<"Error allocating class hint!" <<std::endl;
exit(1);
}
// We have to cast away the const's.
classhints_->res_name = (char*) xrmptr_->instanceName();
classhints_->res_class = (char*) xrmptr_->className();
// Set up the window manager hints
if((wmhints_ = XAllocWMHints()) == NULL){
std::cerr <<"Error allocating Window Manager hints!" <<std::endl;
exit(1);
}
wmhints_->flags = (InputHint|StateHint);
wmhints_->input = True;
wmhints_->initial_state = NormalState;
// Set up XTextProperty for window name and icon name
if(XStringListToTextProperty(&name_, 1, &title_) == 0){
std::cerr <<"Error creating XTextProperty!" <<std::endl;
exit(1);
}
if(XStringListToTextProperty(&name_, 1, &iconname_) == 0){
std::cerr <<"Error creating XTextProperty!" <<std::endl;
exit(1);
}
XSetWMProperties(display_, window_, &title_, &iconname_, argv, argc,
sizehints_, wmhints_, classhints_);
// Set up the Atoms for delete messages
wm_ = XInternAtom( display(), "WM_PROTOCOLS", False );
wmdelete_ = XInternAtom( display(), "WM_DELETE_WINDOW", False );
XChangeProperty( display(), window(), wm_, XA_ATOM, 32,
PropModeReplace, (unsigned char *)(&wmdelete_), 1 );
}
//-----------------------------------------------------------------------------
void XWin::openDisplay( void ){
// Open connection to display selected by user
if ((display_ = XOpenDisplay (display_name_)) == NULL) {
std::cerr <<"Can't open display named " << display_name_ <<std::endl;
exit(1);
}
colormap_ = DefaultColormap( display_, screen() );
}
//-----------------------------------------------------------------------------
void XWin::setColors( void ){
XColor color;
// Main window's background color
if (XParseColor(display_, colormap_, getResource("background"),
&color) == 0 ||
XAllocColor(display_, colormap_, &color) == 0)
bgcolor_ = WhitePixel(display_, DefaultScreen(display_));
else
bgcolor_ = color.pixel;
// Main window's foreground color */
if (XParseColor(display_, colormap_, getResource("foreground"),
&color) == 0 ||
XAllocColor(display_, colormap_, &color) == 0)
fgcolor_ = BlackPixel(display_, DefaultScreen(display_));
else
fgcolor_ = color.pixel;
}
//-----------------------------------------------------------------------------
int XWin::getPixmap(Pixmap *pixmap)
{
char *pixmap_file;
XWindowAttributes root_att;
XpmAttributes pixmap_att;
pixmap_file = (char*) getResourceOrUseDefault("pixmapName",NULL);
if (!pixmap_file)
return 0;
XGetWindowAttributes(display_, DefaultRootWindow(display_),&root_att);
pixmap_att.closeness=30000;
pixmap_att.colormap=root_att.colormap;
pixmap_att.valuemask=XpmSize|XpmReturnPixels|XpmColormap|XpmCloseness;
if (XpmReadFileToPixmap(display_,DefaultRootWindow(display_),pixmap_file,
pixmap, NULL, &pixmap_att))
{
std::cerr << "Pixmap " << pixmap_file << " not found" << std::endl;
std::cerr << "Defaulting to blank" << std::endl;
pixmap = NULL;
return 0;
}
return 1;
}
//-----------------------------------------------------------------------------
void XWin::getGeometry( void ){
char default_geometry[80];
int bitmask;
// Fill out a XsizeHints structure to inform the window manager
// of desired size and location of main window.
if((sizehints_ = XAllocSizeHints()) == NULL){
std::cerr <<"Error allocating size hints!" <<std::endl;
exit(1);
}
sizehints_->flags = PSize;
sizehints_->height = height_;
sizehints_->min_height = sizehints_->height;
sizehints_->width = width_;
sizehints_->min_width = sizehints_->width;
sizehints_->x = x_;
sizehints_->y = y_;
// Construct a default geometry string
snprintf(default_geometry, 80, "%dx%d+%d+%d", sizehints_->width,
sizehints_->height, sizehints_->x, sizehints_->y);
// Process the geometry specification
bitmask = XGeometry(display_, DefaultScreen(display_),
getResourceOrUseDefault("geometry", geometry_),
default_geometry,
0,
1, 1, 0, 0, &(sizehints_->x), &(sizehints_->y),
&(sizehints_->width), &(sizehints_->height));
// Check bitmask and set flags in XSizeHints structure
if (bitmask & (WidthValue | HeightValue)){
sizehints_->flags |= PPosition;
width_ = sizehints_->width;
height_ = sizehints_->height;
}
if (bitmask & (XValue | YValue)){
sizehints_->flags |= USPosition;
x_ = sizehints_->x;
y_ = sizehints_->y;
}
}
//-----------------------------------------------------------------------------
void XWin::selectEvents( long mask ){
XWindowAttributes xAttr;
XSetWindowAttributes xSwAttr;
if ( XGetWindowAttributes( display_, window_, &xAttr ) != 0 ){
xSwAttr.event_mask = xAttr.your_event_mask | mask;
XChangeWindowAttributes( display_, window_, CWEventMask, &xSwAttr );
}
}
void XWin::ignoreEvents( long mask ){
XWindowAttributes xAttr;
XSetWindowAttributes xSwAttr;
if ( XGetWindowAttributes( display_, window_, &xAttr ) != 0 ){
xSwAttr.event_mask = xAttr.your_event_mask & mask;
XChangeWindowAttributes( display_, window_, CWEventMask, &xSwAttr );
}
}
//-----------------------------------------------------------------------------
void XWin::checkevent( void ){
XEvent event;
while ( XEventsQueued( display_, QueuedAfterReading ) ){
XNextEvent( display_, &event );
// call all of the Event's call back functions to process this event
Event *tmp = events_;
while ( tmp != NULL ){
tmp->callBack( event );
tmp = tmp->next_;
}
}
}
//-----------------------------------------------------------------------------
void XWin::addEvent( Event *event ){
Event *tmp = events_;
if ( events_ == NULL )
events_ = event;
else {
while ( tmp->next_ != NULL )
tmp = tmp->next_;
tmp->next_ = event;
}
}
//-----------------------------------------------------------------------------
const char *XWin::getResourceOrUseDefault( const char *name, const char* defaultVal ){
const char* retval = xrmptr_->getResource (name);
if (retval)
return retval;
else
return defaultVal;
}
//-----------------------------------------------------------------------------
const char *XWin::getResource( const char *name ){
const char* retval = xrmptr_->getResource (name);
if (retval)
return retval;
else
{
std::cerr << "Error: Couldn't find '" << name << "' resource in the resource database!\n";
exit (-1);
/* Some compilers aren't smart enough to know that exit() exits. */
return NULL;
}
}
//-----------------------------------------------------------------------------
void XWin::dumpResources( std::ostream &os ){
std::cerr << "Function not implemented!\n"; // BCG FIXME Need to make this.
(void) os; // Keep gcc happy.
}
//-----------------------------------------------------------------------------
unsigned long XWin::allocColor( const char *name ){
XColor exact, closest;
if ( XAllocNamedColor( display_, colormap(), name, &closest, &exact ) == 0 )
std::cerr <<"XWin::allocColor() : failed to alloc : " <<name <<std::endl;
return exact.pixel;
}
//-----------------------------------------------------------------------------
void XWin::deleteEvent( XEvent &event ){
if ( (event.xclient.message_type == wm_ ) &&
((unsigned)event.xclient.data.l[0] == wmdelete_) )
done( 1 );
}
//-----------------------------------------------------------------------------
XWin::Event::Event( XWin *parent, int event, EventCallBack callBack ){
next_ = NULL;
parent_ = parent;
event_ = event;
callBack_ = callBack;
switch ( event_ ){
case ButtonPress:
mask_ = ButtonPressMask;
break;
case ButtonRelease:
mask_ = ButtonReleaseMask;
break;
case EnterNotify:
mask_ = EnterWindowMask;
break;
case LeaveNotify:
mask_ = LeaveWindowMask;
break;
case MotionNotify:
mask_ = PointerMotionMask;
break;
case FocusIn:
case FocusOut:
mask_ = FocusChangeMask;
break;
case KeymapNotify:
mask_ = KeymapStateMask;
break;
case KeyPress:
mask_ = KeyPressMask;
break;
case KeyRelease:
mask_ = KeyReleaseMask;
break;
case MapNotify:
case SelectionClear:
case SelectionNotify:
case SelectionRequest:
case ClientMessage:
case MappingNotify:
mask_ = NoEventMask;
break;
case Expose:
case GraphicsExpose:
case NoExpose:
mask_ = ExposureMask;
break;
case ColormapNotify:
mask_ = ColormapChangeMask;
break;
case PropertyNotify:
mask_ = PropertyChangeMask;
break;
case UnmapNotify:
case ReparentNotify:
case GravityNotify:
case DestroyNotify:
case CirculateNotify:
case ConfigureNotify:
mask_ = StructureNotifyMask | SubstructureNotifyMask;
break;
case CreateNotify:
mask_ = SubstructureNotifyMask;
break;
case VisibilityNotify:
mask_ = VisibilityChangeMask;
break;
// The following are used by window managers
case CirculateRequest:
case ConfigureRequest:
case MapRequest:
mask_ = SubstructureRedirectMask;
break;
case ResizeRequest:
mask_ = ResizeRedirectMask;
break;
default:
std::cerr <<"XWin::Event::Event() : unknown event type : " <<event_ <<std::endl;
mask_ = NoEventMask;
break;
}
}