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#include "plcm.h"
static void handle_message(const XClientMessageEvent *ev);
static void handle_expose(const XExposeEvent *ev);
static void handle_configure(const XConfigureEvent *ev);
static void handle_destroy(const XDestroyWindowEvent *ev);
static void handle_map(const XMapEvent *ev);
static void handle_unmap(const XUnmapEvent *ev);
static void handle_property(const XPropertyEvent *ev);
static void handle_visibility(const XVisibilityEvent *ev);
static void handle_damage(const XDamageNotifyEvent *ev);
void event_loop(void)
{
while (1)
{
XEvent ev;
XNextEvent(disp, &ev);
switch (ev.type)
{
case ClientMessage:
handle_message(&ev.xclient);
break;
case Expose:
handle_expose(&ev.xexpose);
break;
case ConfigureNotify:
handle_configure(&ev.xconfigure);
break;
case DestroyNotify:
handle_destroy(&ev.xdestroywindow);
break;
case MapNotify:
handle_map(&ev.xmap);
break;
case UnmapNotify:
handle_unmap(&ev.xunmap);
break;
case PropertyNotify:
handle_property(&ev.xproperty);
break;
case VisibilityNotify:
handle_visibility(&ev.xvisibility);
break;
default:
if (ev.type == damage_event_base + XDamageNotify)
handle_damage((XDamageNotifyEvent*) &ev.xany);
}
}
}
static void handle_message(const XClientMessageEvent *ev)
{
if (ev->window != ctrl_win)
{
info("received message for unexpected window 0x%08lx",
(unsigned long) ev->window);
return;
}
if (ev->message_type == _PLCM_ENABLE && ev->format == 32)
{
Window source, target;
projection_t* proj;
source = ev->data.l[0];
target = ev->data.l[1];
info("recieved ENABLE message for 0x%08x -> 0x%08x",
(int) source, (int) target);
proj = add_projection(source, target);
if (proj != NULL)
{
info("projection enabled");
}
else
{
info("projection NOT enabled");
}
}
else if (ev->message_type == _PLCM_DISABLE && ev->format == 32)
{
Window source, target;
projection_t* proj;
source = ev->data.l[0];
target = ev->data.l[1];
info("recieved DISABLE message for 0x%08x -> 0x%08x",
(int) source, (int) target);
proj = find_source_window(source);
if (proj == NULL || proj->target_window != target)
{
info("DISABLE for unknown projection, ignoring");
}
else
{
free_projection(proj);
}
}
else
{
info("unknown message: %d (format %d)",
(int) ev->message_type, ev->format);
return;
}
}
static void handle_expose(const XExposeEvent *ev)
{
projection_t *proj = find_target_window(ev->window);
if (proj)
{
XRectangle rect;
/* Translate from target to source coordinated */
rect.x = ev->x + proj->source_geometry.x;
rect.y = ev->y + proj->source_geometry.y;
rect.width = ev->width;
rect.height = ev->height;
project_rectangle(proj, &rect);
}
}
static void handle_configure(const XConfigureEvent *ev)
{
projection_t *proj = find_any_window(ev->window);
if (proj)
{
/* Update the geometry info for the windows. But don't trigger
a redraw, wait for Expose or Damage events for that.
*/
if (proj->target_window == ev->window)
{
project_target_resized(proj, ev->width, ev->height);
}
else
{
/* Ignore the border when it comes to projection */
proj->source_geometry.x = ev->x + ev->border_width;
proj->source_geometry.y = ev->y + ev->border_width;
proj->source_geometry.width = ev->width;
proj->source_geometry.height = ev->height;
}
}
}
static void handle_destroy(const XDestroyWindowEvent *ev)
{
projection_t *proj = find_any_window(ev->window);
if (proj)
{
info("0x%08x: destroyed, taking down projection",
(int) ev->window);
/* Reset either window parameter in proj to avoid getting
XBadWindow errors during shutdown.
*/
if (proj->target_window == ev->window)
proj->target_window = None;
else
proj->source_window = None;
free_projection(proj);
}
}
static void handle_map(const XMapEvent *ev)
{
projection_t *proj = find_any_window(ev->window);
if (proj)
{
info("0x%08x: mapped", (int) ev->window);
if (proj->target_window == ev->window)
proj->target_is_visible = 1;
else
proj->source_is_mapped = 1;
}
}
static void handle_unmap(const XUnmapEvent *ev)
{
projection_t *proj = find_any_window(ev->window);
if (proj)
{
info("0x%08x: unmapped", (int) ev->window);
if (proj->target_window == ev->window)
proj->target_is_visible = 0;
else
proj->source_is_mapped = 0;
}
}
static void handle_property(const XPropertyEvent *ev)
{
projection_t *proj = find_target_window(ev->window);
if (!proj)
return;
if (ev->atom == _PLCM_BRIGHTNESS)
{
if (update_brightness(proj))
{
/* Need redraw */
project_all(proj);
}
}
}
static void handle_visibility(const XVisibilityEvent *ev)
{
projection_t *proj = find_target_window(ev->window);
if (proj)
{
proj->target_is_visible = (ev->state != VisibilityFullyObscured);
info("0x%08x: is visible: %d",
(int) proj->target_window,
proj->target_is_visible);
}
}
static void handle_damage(const XDamageNotifyEvent *ev)
{
projection_t *proj = find_source_window(ev->drawable);
if (proj)
{
/* Get the accumulated damage */
XDamageSubtract(disp, proj->damage, None, proj->damage_region);
project_region(proj);
}
}
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