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#include <pthread.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <X11/XCB/xcb.h>
#include "reply_formats.h"
#include "xcb_aux.h"
#include "xcb_event.h"
#include "xcb_atom.h"
#include "xcb_icccm.h"
#include "xcb_wm.h"
static const int TOP = 20;
static const int LEFT = 5;
static const int BOTTOM = 5;
static const int RIGHT = 5;
static const int TEST_THREADS = 1;
static const int TEST_WATCH_ROOT = 1;
static INT16 move_from_x = -1;
static INT16 move_from_y = -1;
static int handleEvent(void *ignored, XCBConnection *c, XCBGenericEvent *e)
{
return formatEvent(e);
}
static int handleButtonPressEvent(void *data, XCBConnection *c, XCBButtonPressEvent *e)
{
if(move_from_x != -1 && move_from_y != -1)
{
printf("Weird. Got ButtonPress after ButtonPress.\n");
return 0;
}
move_from_x = e->root_x;
move_from_y = e->root_y;
return 1;
}
static int handleButtonReleaseEvent(void *data, XCBConnection *c, XCBButtonReleaseEvent *e)
{
CARD32 values[2];
if(move_from_x == -1 && move_from_y == -1)
{
printf("Weird. Got ButtonRelease without ButtonPress.\n");
return 0;
}
values[0] = /* x */ e->root_x;
values[1] = /* y */ e->root_y;
XCBConfigureWindow(c, e->event, XCBConfigWindowX | XCBConfigWindowY, values);
XCBFlush(c);
move_from_x = -1;
move_from_y = -1;
return 1;
}
static int addClientWindow(XCBWINDOW child, XCBWINDOW parent, XCBGCONTEXT titlegc)
{
int success;
ClientWindow *record = malloc(sizeof(ClientWindow));
assert(record);
record->child = child;
record->parent = parent;
record->name_len = 0;
record->name = 0;
record->titlegc = titlegc;
success = TablePut(byParent, parent.xid, record) &&
TablePut(byChild, child.xid, record);
assert(success);
return 1;
}
void reparentWindow(XCBConnection *c, XCBWINDOW child,
XCBVISUALID v, XCBWINDOW r, CARD8 d,
INT16 x, INT16 y, CARD16 width, CARD16 height)
{
XCBWINDOW w;
XCBDRAWABLE drawable;
CARD32 mask = 0;
CARD32 values[3];
XCBSCREEN *root = XCBSetupRootsIter(XCBGetSetup(c)).data;
XCBGCONTEXT titlegc;
w = XCBWINDOWNew(c);
mask |= XCBCWBackPixel;
values[0] = root->white_pixel;
mask |= XCBCWOverrideRedirect;
values[1] = 1;
mask |= XCBCWEventMask;
values[2] = XCBEventMaskButtonPress | XCBEventMaskButtonRelease
| XCBEventMaskExposure /* | XCBEventMaskEnterWindow | XCBEventMaskLeaveWindow */;
printf("Reparenting 0x%08lx under 0x%08lx.\n", child.xid, w.xid);
XCBCreateWindow(c, d, w, r, x, y,
width + LEFT + RIGHT, height + TOP + BOTTOM,
/* border_width */ 0, XCBWindowClassInputOutput, v, mask, values);
XCBChangeSaveSet(c, XCBSetModeInsert, child);
XCBMapWindow(c, w);
titlegc = XCBGCONTEXTNew(c);
mask = XCBGCForeground | XCBGCBackground;
values[0] = root->black_pixel;
values[1] = root->white_pixel;
drawable.window = w;
XCBCreateGC(c, titlegc, drawable, mask, values);
addClientWindow(child, w, titlegc);
XCBReparentWindow(c, child, w, LEFT - 1, TOP - 1);
mask = XCBCWEventMask;
values[0] = XCBEventMaskPropertyChange | XCBEventMaskStructureNotify;
XCBChangeWindowAttributes(c, child, mask, values);
XCBFlush(c);
}
static void redrawWindow(XCBConnection *c, ClientWindow *client)
{
XCBDRAWABLE d = { client->parent };
if(!client->name_len)
return;
XCBClearArea(c, 0, d.window, 0, 0, 0, 0);
XCBImageText8(c, client->name_len, d, client->titlegc,
LEFT - 1, TOP - 4, client->name);
XCBFlush(c);
}
static int handleExposeEvent(void *data, XCBConnection *c, XCBExposeEvent *e)
{
ClientWindow *client = TableGet(byParent, e->window.xid);
if(!client || e->count != 0)
return 1;
redrawWindow(c, client);
return 1;
}
static int handleWMNameChange(void *data, XCBConnection *c, BYTE state, XCBWINDOW window, XCBATOM atom, XCBGetPropertyRep *prop)
{
ClientWindow *client = TableGet(byChild, window.xid);
printf("WM_NAME change: Window 0x%08lx ", window.xid);
if(!client)
{
printf("is not being managed.\n");
return 0;
}
if(client->name)
{
printf("was named \"%.*s\"; now ", client->name_len, client->name);
free(client->name);
}
if(!prop)
{
client->name_len = 0;
client->name = 0;
printf("has no name.\n");
return 1;
}
client->name_len = XCBGetPropertyValueLength(prop);
client->name = malloc(client->name_len);
assert(client->name);
strncpy(client->name, XCBGetPropertyValue(prop), client->name_len);
printf("is named \"%.*s\".\n", client->name_len, client->name);
redrawWindow(c, client);
return 1;
}
int main(int argc, char **argv)
{
XCBConnection *c;
EventHandlers *evenths;
PropertyHandlers *prophs;
XCBWINDOW root;
pthread_t event_thread;
int screen_nbr;
int i;
byChild = AllocTable();
byParent = AllocTable();
c = XCBConnect(NULL, &screen_nbr);
evenths = allocEventHandlers(c);
for(i = 2; i < 128; ++i)
setEventHandler(evenths, i, handleEvent, 0);
for(i = 0; i < 256; ++i)
setErrorHandler(evenths, i, (GenericErrorHandler) handleEvent, 0);
setButtonPressEventHandler(evenths, handleButtonPressEvent, 0);
setButtonReleaseEventHandler(evenths, handleButtonReleaseEvent, 0);
setUnmapNotifyEventHandler(evenths, handleUnmapNotifyEvent, 0);
setExposeEventHandler(evenths, handleExposeEvent, 0);
prophs = AllocPropertyHandlers(evenths);
setMapNotifyEventHandler(evenths, handleMapNotifyEvent, prophs);
WatchWMName(prophs, 40, handleWMNameChange, 0);
if(TEST_THREADS)
{
pthread_create(&event_thread, 0, (void *(*)(void *))eventLoop, evenths);
}
root = XCBAuxGetScreen(c, screen_nbr)->root;
{
CARD32 mask = XCBCWEventMask;
CARD32 values[] = { XCBEventMaskSubstructureNotify | XCBEventMaskPropertyChange };
XCBChangeWindowAttributes(c, root, mask, values);
}
XCBFlush(c);
manageExistingWindows(c, prophs, root);
/* Terminate only when the event loop terminates */
if(TEST_THREADS)
pthread_join(event_thread, 0);
else
eventLoop(evenths);
exit(0);
/*NOTREACHED*/
}
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