vd_agent: add protocol messages for clipboard/selection-owner model

-VD_AGENT_CLIPBOARD_GRAB(type) - tell the other side that an application in our side ("we") got ownership of the clipboard.
-VD_AGENT_CLIPBOARD_REQUEST(type) - after we know the other side owns the clipboard (GRAB received), we notify the os we are the owner. when we are asked by the os/app for the clipboard data, we send this REQUEST msg to the other side.
-VD_AGENT_CLIPBOARD(type, data) - the existing message for sending the clipboard, is now sent only in response to REQUEST.
-VD_AGENT_CLIPBOARD_RELEASE - tell the other side that we are no longer the owner of the clipboard (e.g. the owner app was closed).

this patch will be followed by agent & client patches handling the above messages.

1 files changed, 12 insertions, 1 deletions

diff --git a/spice/vd_agent.h b/spice/vd_agent.h
index 9e5adec..0da23aa 100644
--- a/spice/vd_agent.h
+++ b/spice/vd_agent.h
@@ -65,6 +65,9 @@ enum {
     VD_AGENT_CLIPBOARD,
     VD_AGENT_DISPLAY_CONFIG,
     VD_AGENT_ANNOUNCE_CAPABILITIES,
+    VD_AGENT_CLIPBOARD_GRAB,
+    VD_AGENT_CLIPBOARD_REQUEST,
+    VD_AGENT_CLIPBOARD_RELEASE,
     VD_AGENT_END_MESSAGE,
 };
 
@@ -121,7 +124,6 @@ enum {
     VD_AGENT_ERROR,
 };
 
-//FIXME: size required?
 typedef struct SPICE_ATTR_PACKED VDAgentClipboard {
     uint32_t type;
     uint8_t data[0];
@@ -129,8 +131,17 @@ typedef struct SPICE_ATTR_PACKED VDAgentClipboard {
 
 enum {
     VD_AGENT_CLIPBOARD_UTF8_TEXT = 1,
+    VD_AGENT_CLIPBOARD_BITMAP,
 };
 
+typedef struct SPICE_ATTR_PACKED VDAgentClipboardGrab {
+    uint32_t type;
+} VDAgentClipboardGrab;
+
+typedef struct SPICE_ATTR_PACKED VDAgentClipboardRequest {
+    uint32_t type;
+} VDAgentClipboardRequest;
+
 enum {
     VD_AGENT_CAP_MOUSE_STATE = 0,
     VD_AGENT_CAP_MONITORS_CONFIG,