DeforaOS/libDesktop
DeforaOS/libDesktop
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Allow applications to register message handlers as well

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Happy new year!
This commit is contained in:
Pierre Pronchery 2011-12-31 18:59:49 +00:00
parent 1982180fba
commit 2edd7a6444
2 changed files with 70 additions and 0 deletions
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7
include/Desktop/message.h
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@ -20,7 +20,14 @@
/* Message */
/* types */
typedef int (*DesktopMessageCallback)(void * data, uint32_t value1,
uint32_t value2, uint32_t value3);
/* functions */
int desktop_message_register(char const * destination,
DesktopMessageCallback callback, void * data);
int desktop_message_send(char const * destination, uint32_t value1,
uint32_t value2, uint32_t value3);

63
src/message.c
View File

@ -15,11 +15,48 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gdk/gdkx.h>
#include <System.h>
#include "Desktop.h"
/* Message */
/* private */
/* types */
typedef struct _MessageCallback
{
DesktopMessageCallback callback;
void * data;
} MessageCallback;
/* prototypes */
/* callbacks */
static GdkFilterReturn _desktop_message_on_callback(GdkXEvent * xevent,
GdkEvent * event, gpointer data);
/* public */
/* functions */
/* desktop_message_register */
int desktop_message_register(char const * destination,
DesktopMessageCallback callback, void * data)
{
MessageCallback * mc;
if((mc = malloc(sizeof(*mc))) == NULL)
return -error_set_code(1, "%s", strerror(errno));
mc->callback = callback;
mc->data = data;
gdk_add_client_message_filter(gdk_atom_intern(destination, FALSE),
_desktop_message_on_callback, mc);
return 0;
}
/* desktop_message_send */
int desktop_message_send(char const * destination, uint32_t value1,
uint32_t value2, uint32_t value3)
@ -39,3 +76,29 @@ int desktop_message_send(char const * destination, uint32_t value1,
gdk_event_send_clientmessage_toall(&event);
return 0;
}
/* private */
/* callbacks */
/* desktop_message_on_callback */
static GdkFilterReturn _desktop_message_on_callback(GdkXEvent * xevent,
GdkEvent * event, gpointer data)
{
MessageCallback * mc = data;
XEvent * xev = xevent;
XClientMessageEvent * xcme;
uint32_t value1;
uint32_t value2;
uint32_t value3;
if(xev->type != ClientMessage)
return GDK_FILTER_CONTINUE;
xcme = &xev->xclient;
value1 = xcme->data.b[0];
value2 = xcme->data.b[1];
value3 = xcme->data.b[2];
if(mc->callback(mc->data, value1, value2, value3) == 0)
return GDK_FILTER_CONTINUE;
free(mc);
return GDK_FILTER_REMOVE;
}