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[client] wayland: prefer PNG over other image types

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Support for non-PNG types is optional in the spice agent, so we should
avoid sending those if PNG is available.

Currently, the spice VDAgent supports only PNG and BMP formats.
This commit is contained in:
Quantum 2021-05-29 18:33:28 -04:00 committed by Geoffrey McRae
parent 437bba1897
commit 000d91afca
1 changed files with 22 additions and 1 deletions
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23
client/displayservers/Wayland/clipboard.c
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@ -151,6 +151,23 @@ static enum LG_ClipboardData mimetypeToCbType(const char * mimetype)
return LG_CLIPBOARD_DATA_NONE;
}
static bool isOptionalImageCbtype(enum LG_ClipboardData type)
{
switch (type)
{
case LG_CLIPBOARD_DATA_TEXT:
case LG_CLIPBOARD_DATA_PNG:
return false;
case LG_CLIPBOARD_DATA_BMP:
case LG_CLIPBOARD_DATA_TIFF:
case LG_CLIPBOARD_DATA_JPEG:
return true;
default:
DEBUG_ERROR("invalid clipboard type");
abort();
}
}
// Destination client handlers.
static void dataOfferHandleOffer(void * data, struct wl_data_offer * offer,
@ -160,9 +177,13 @@ static void dataOfferHandleOffer(void * data, struct wl_data_offer * offer,
// We almost never prefer text/html, as that's used to represent rich text.
// Since we can't copy or paste rich text, we should instead prefer actual
// images or plain text.
// We also prefer PNG over other image types as it's the only type guaranteed
// to be supported by the spice agent.
if (type != LG_CLIPBOARD_DATA_NONE &&
(wlCb.pendingType == LG_CLIPBOARD_DATA_NONE ||
strstr(wlCb.pendingMimetype, "html")))
strstr(wlCb.pendingMimetype, "html") ||
(type == LG_CLIPBOARD_DATA_PNG &&
isOptionalImageCbtype(wlCb.pendingType))))
{
wlCb.pendingType = type;
if (wlCb.pendingMimetype)