From dd7595a3475407a7fa96a97393bae8c5220e8762 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Wed, 4 Jan 2012 18:41:13 +1000
Subject: Add the base Enlightenment Foundation Libraries - eina, eet, evas,
 ecore, embryo, and edje.

Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
---
 .../ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c   | 155 +++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 libraries/ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c

(limited to 'libraries/ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c')

diff --git a/libraries/ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c b/libraries/ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c
new file mode 100644
index 0000000..d0ffde1
--- /dev/null
+++ b/libraries/ecore/src/lib/ecore_x/xcb/ecore_xcb_damage.c
@@ -0,0 +1,155 @@
+#include "ecore_xcb_private.h"
+# ifdef ECORE_XCB_DAMAGE
+#  include <xcb/damage.h>
+# endif
+
+/* local variables */
+static Eina_Bool _damage_avail = EINA_FALSE;
+
+/* external variables */
+int _ecore_xcb_event_damage = -1;
+
+void
+_ecore_xcb_damage_init(void)
+{
+   LOGFN(__FILE__, __LINE__, __FUNCTION__);
+
+#ifdef ECORE_XCB_DAMAGE
+   xcb_prefetch_extension_data(_ecore_xcb_conn, &xcb_damage_id);
+#endif
+}
+
+void
+_ecore_xcb_damage_finalize(void)
+{
+#ifdef ECORE_XCB_DAMAGE
+   const xcb_query_extension_reply_t *ext_reply;
+#endif
+
+   LOGFN(__FILE__, __LINE__, __FUNCTION__);
+
+#ifdef ECORE_XCB_DAMAGE
+   ext_reply = xcb_get_extension_data(_ecore_xcb_conn, &xcb_damage_id);
+   if ((ext_reply) && (ext_reply->present))
+     {
+        xcb_damage_query_version_cookie_t cookie;
+        xcb_damage_query_version_reply_t *reply;
+
+        cookie =
+          xcb_damage_query_version_unchecked(_ecore_xcb_conn,
+                                             XCB_DAMAGE_MAJOR_VERSION,
+                                             XCB_DAMAGE_MINOR_VERSION);
+        reply = xcb_damage_query_version_reply(_ecore_xcb_conn, cookie, NULL);
+        if (reply)
+          {
+             _damage_avail = EINA_TRUE;
+             free(reply);
+          }
+
+        if (_damage_avail)
+          _ecore_xcb_event_damage = ext_reply->first_event;
+     }
+#endif
+}
+
+/**
+ * @defgroup Ecore_X_Damage_Group X Damage Extension Functions
+ *
+ * Functions related to the X Damage Extension.
+ */
+
+EAPI Eina_Bool
+ecore_x_damage_query(void)
+{
+   return _damage_avail;
+}
+
+/**
+ * Create a damage object
+ *
+ * @param drawable The drawable to monitor
+ * @param level The level of the damage report
+ * @return The damage object
+ *
+ * Creates a damage object to monitor changes to @p drawable,
+ * with the level @p level.
+ *
+ * @ingroup Ecore_X_Damage_Group
+ */
+EAPI Ecore_X_Damage
+ecore_x_damage_new(Ecore_X_Drawable            drawable,
+                   Ecore_X_Damage_Report_Level level)
+{
+   Ecore_X_Damage damage = 0;
+
+   LOGFN(__FILE__, __LINE__, __FUNCTION__);
+   CHECK_XCB_CONN;
+
+   if (!_damage_avail) return 0;
+
+#ifdef ECORE_XCB_DAMAGE
+   damage = xcb_generate_id(_ecore_xcb_conn);
+   xcb_damage_create(_ecore_xcb_conn, damage, drawable, level);
+//   ecore_x_flush();
+#endif
+
+   return damage;
+}
+
+/**
+ * Destroy a damage object
+ *
+ * @param The damage object to destroy
+ *
+ * Destroys the damage object @p damage
+ *
+ * @ingroup Ecore_X_Damage_Group
+ */
+EAPI void
+ecore_x_damage_free(Ecore_X_Damage damage)
+{
+   LOGFN(__FILE__, __LINE__, __FUNCTION__);
+   CHECK_XCB_CONN;
+
+   if (!_damage_avail) return;
+
+#ifdef ECORE_XCB_DAMAGE
+   xcb_damage_destroy(_ecore_xcb_conn, damage);
+//   ecore_x_flush();
+#endif
+}
+
+/**
+ * Synchronously modifies the region
+ *
+ * @param damage The damage object to destroy
+ * @param repair The repair region
+ * @param parts The parts region
+ *
+ * Synchronously modifies the regions in the following manner:
+ * If @p repair is @c XCB_NONE:
+ *   1) parts = damage
+ *   2) damage = <empty>
+ * Otherwise:
+ *   1) parts = damage INTERSECT repair
+ *   2) damage = damage - parts
+ *   3) Generate DamageNotify for remaining damage areas
+ *
+ * @ingroup Ecore_X_Damage_Group
+ */
+EAPI void
+ecore_x_damage_subtract(Ecore_X_Damage damage,
+                        Ecore_X_Region repair,
+                        Ecore_X_Region parts)
+{
+   LOGFN(__FILE__, __LINE__, __FUNCTION__);
+   CHECK_XCB_CONN;
+
+   if (!_damage_avail) return;
+
+#ifdef ECORE_XCB_DAMAGE
+   xcb_damage_subtract(_ecore_xcb_conn, damage, repair, parts);
+//   ecore_x_flush();
+#endif
+}
+
-- 
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