#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <signal.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
int y;
unsigned width;
unsigned height;
+ unsigned border;
int map_state;
Damage damage;
Pixmap pixmap;
1.0f, 0.0f
};
+int terminate_requested = 0;
+
+int x_error_handler(Display *display, XErrorEvent *event)
+{
+ printf("Ignoring X error %d on resource %lx\n", event->error_code, event->resourceid);
+ (void)display;
+ return 0;
+}
+
int with_error(const char *message)
{
fprintf(stderr, "%s\n", message);
if(w==screen->root || w==screen->overlay)
return;
- XGetWindowAttributes(compositor->display, w, &win_attr);
+ if(!XGetWindowAttributes(compositor->display, w, &win_attr))
+ {
+ printf("XGetWindowAttributes failed; probably the window was already destroyed\n");
+ return;
+ }
if(win_attr.class==InputOnly)
return;
window->y = win_attr.y;
window->width = win_attr.width;
window->height = win_attr.height;
+ window->border = win_attr.border_width;
window->map_state = win_attr.map_state;
window->damage = XDamageCreate(compositor->display, window->window, XDamageReportNonEmpty);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
+void remove_window(Compositor *compositor, CompositedScreen *screen, Window w, int destroyed)
+{
+ unsigned i;
+
+ for(i=0; i<screen->nwindows; ++i)
+ if(screen->windows[i].window==w)
+ {
+ glDeleteTextures(1, &screen->windows[i].texture);
+ if(!destroyed)
+ {
+ XDamageDestroy(compositor->display, screen->windows[i].damage);
+ if(screen->windows[i].pixmap)
+ {
+ glXDestroyPixmap(compositor->display, screen->windows[i].glx_pixmap);
+ XFreePixmap(compositor->display, screen->windows[i].pixmap);
+ }
+ XCompositeUnredirectWindow(compositor->display, screen->windows[i].window, CompositeRedirectManual);
+ }
+
+ --screen->nwindows;
+ for(; i<screen->nwindows; ++i)
+ screen->windows[i] = screen->windows[i+1];
+ }
+}
+
CompositedScreen *find_screen_by_root(Compositor *compositor, Window root)
{
unsigned i;
XFree(children);
+ screen->dirty = 1;
+
return 1;
}
if(!compositor->display)
return with_error("Could not open X display");
+ XSetErrorHandler(&x_error_handler);
+
if(!XCompositeQueryExtension(compositor->display, &event_base, &error_base))
return with_error("XComposite is required but was not found");
else if(!XCompositeQueryVersion(compositor->display, &major_ver, &minor_ver))
if(!initialize_screen(compositor, i))
return 0;
+ compositor->dirty = 1;
+
return 1;
}
void shutdown_screen(Compositor *compositor, CompositedScreen *screen)
{
+ unsigned i;
+
+ use_gl(compositor, screen);
+
+ for(i=0; i<screen->nwindows; ++i)
+ {
+ glDeleteTextures(1, &screen->windows[i].texture);
+ if(screen->windows[i].pixmap)
+ {
+ glXDestroyPixmap(compositor->display, screen->windows[i].glx_pixmap);
+ XFreePixmap(compositor->display, screen->windows[i].pixmap);
+ XDamageDestroy(compositor->display, screen->windows[i].damage);
+ }
+ }
+
+ glXMakeContextCurrent(compositor->display, 0, 0, NULL);
glXDestroyContext(compositor->display, screen->glx_context);
glXDestroyWindow(compositor->display, screen->glx_window);
XDestroyWindow(compositor->display, screen->render_window);
XCompositeReleaseOverlayWindow(compositor->display, screen->overlay);
+
+ free(screen->windows);
}
void shutdown_compositor(Compositor *compositor)
{
unsigned i;
- glXMakeContextCurrent(compositor->display, 0, 0, NULL);
for(i=0; i<compositor->nscreens; ++i)
shutdown_screen(compositor, &compositor->screens[i]);
+ free(compositor->screens);
+
+ XCloseDisplay(compositor->display);
}
void process_create_window_event(Compositor *compositor, XCreateWindowEvent *event)
add_window(compositor, screen, event->window);
}
+void process_destroy_window_event(Compositor *compositor, XDestroyWindowEvent *event)
+{
+ CompositedScreen *screen = find_screen_by_root(compositor, event->event);
+ if(!screen)
+ return;
+
+ remove_window(compositor, screen, event->window, 1);
+}
+
void process_map_event(Compositor *compositor, XMapEvent *event)
{
CompositedScreen *screen = find_screen_by_root(compositor, event->event);
window->map_state = IsUnviewable;
}
+void process_reparent_event(Compositor *compositor, XReparentEvent *event)
+{
+ CompositedScreen *screen = find_screen_by_root(compositor, event->event);
+ if(!screen)
+ return;
+
+ if(event->parent==screen->root)
+ add_window(compositor, screen, event->window);
+ else
+ remove_window(compositor, screen, event->window, 0);
+}
+
void process_damage_event(Compositor *compositor, XDamageNotifyEvent *event)
{
CompositedScreen *screen = find_screen_by_window(compositor, event->drawable);
case CreateNotify:
process_create_window_event(compositor, &event.xcreatewindow);
break;
+ case DestroyNotify:
+ process_destroy_window_event(compositor, &event.xdestroywindow);
+ break;
case MapNotify:
process_map_event(compositor, &event.xmap);
break;
case UnmapNotify:
process_unmap_event(compositor, &event.xunmap);
break;
+ case ReparentNotify:
+ process_reparent_event(compositor, &event.xreparent);
+ break;
default:
if(event.type==compositor->damage_event+XDamageNotify)
process_damage_event(compositor, (XDamageNotifyEvent *)&event);
glUseProgram(screen->program);
glBindVertexArray(screen->vertex_array);
- XGrabServer(compositor->display);
- glXWaitX();
for(j=0; j<screen->nwindows; ++j)
{
CompositedWindow *window = &screen->windows[j];
{
glBindTexture(GL_TEXTURE_2D, window->texture);
compositor->glXBindTexImageEXT(compositor->display, window->glx_pixmap, GLX_FRONT_LEFT_EXT, NULL);
- glUniform4f(screen->geometry_loc, (float)window->x/screen->width, (float)(screen->height-window->y-window->height)/screen->height, (float)window->width/screen->width, (float)window->height/screen->height);
+ glUniform4f(screen->geometry_loc, (float)window->x/screen->width, (float)(screen->height-window->y-window->height)/screen->height, (float)(window->width+2*window->border)/screen->width, (float)(window->height+2*window->border)/screen->height);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
compositor->glXReleaseTexImageEXT(compositor->display, window->glx_pixmap, GLX_FRONT_LEFT_EXT);
XDamageSubtract(compositor->display, window->damage, None, None);
}
}
- XUngrabServer(compositor->display);
glXSwapBuffers(compositor->display, screen->glx_window);
screen->dirty = 0;
compositor->dirty = 0;
}
+void sighandler(int sig)
+{
+ terminate_requested = 1;
+ (void)sig;
+}
+
int main()
{
Compositor compositor;
+ signal(SIGINT, &sighandler);
+ signal(SIGTERM, &sighandler);
+
if(!initialize_compositor(&compositor))
return 1;
- while(1)
+ while(!terminate_requested)
{
if(!process_event(&compositor))
refresh_screens(&compositor);
projects / geometrycompositor.git / blobdiff