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Wayland: Improve handling of pending data offers

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The code assumed that all data offers were selections that supported
plaintext UTF-8.

The initial data offer events are now handled almost tolerably.  Only
selection data offers are used for clipboard string and only if they
provide plaintext UTF-8.  Drag and drop data offers are now rejected as
soon as they enter a surface.

Related to #2040
This commit is contained in:
Camilla Löwy
2022-03-23 19:58:33 +01:00
parent 89d3ea8d69
commit 8d87be1268
4 changed files with 93 additions and 25 deletions
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72
src/wl_init.c
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@@ -704,6 +704,16 @@ static void dataOfferHandleOffer(void* userData,
struct wl_data_offer* offer,
const char* mimeType)
{
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
if (strcmp(mimeType, "text/plain;charset=utf-8") == 0)
_glfw.wl.offers[i].text_plain_utf8 = GLFW_TRUE;
break;
}
}
}
static const struct wl_data_offer_listener dataOfferListener = {
@@ -714,11 +724,19 @@ static void dataDeviceHandleDataOffer(void* userData,
struct wl_data_device* device,
struct wl_data_offer* offer)
{
if (_glfw.wl.dataOffer)
wl_data_offer_destroy(_glfw.wl.dataOffer);
_GLFWofferWayland* offers =
_glfw_realloc(_glfw.wl.offers, _glfw.wl.offerCount + 1);
if (!offers)
{
_glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
return;
}
_glfw.wl.dataOffer = offer;
wl_data_offer_add_listener(_glfw.wl.dataOffer, &dataOfferListener, NULL);
_glfw.wl.offers = offers;
_glfw.wl.offerCount++;
_glfw.wl.offers[_glfw.wl.offerCount - 1] = (_GLFWofferWayland) { offer };
wl_data_offer_add_listener(offer, &dataOfferListener, NULL);
}
static void dataDeviceHandleEnter(void* userData,
@@ -729,6 +747,19 @@ static void dataDeviceHandleEnter(void* userData,
wl_fixed_t y,
struct wl_data_offer* offer)
{
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
_glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
_glfw.wl.offerCount--;
// We don't yet handle drag and drop
wl_data_offer_accept(offer, serial, NULL);
wl_data_offer_destroy(offer);
break;
}
}
}
static void dataDeviceHandleLeave(void* userData,
@@ -753,6 +784,26 @@ static void dataDeviceHandleSelection(void* userData,
struct wl_data_device* device,
struct wl_data_offer* offer)
{
if (_glfw.wl.selectionOffer)
{
wl_data_offer_destroy(_glfw.wl.selectionOffer);
_glfw.wl.selectionOffer = NULL;
}
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
{
if (_glfw.wl.offers[i].offer == offer)
{
if (_glfw.wl.offers[i].text_plain_utf8)
_glfw.wl.selectionOffer = offer;
else
wl_data_offer_destroy(offer);
_glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
_glfw.wl.offerCount--;
break;
}
}
}
static const struct wl_data_device_listener dataDeviceListener = {
@@ -1409,6 +1460,11 @@ void _glfwTerminateWayland(void)
_glfw.wl.cursor.handle = NULL;
}
for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
wl_data_offer_destroy(_glfw.wl.offers[i].offer);
_glfw_free(_glfw.wl.offers);
if (_glfw.wl.cursorSurface)
wl_surface_destroy(_glfw.wl.cursorSurface);
if (_glfw.wl.subcompositor)
@@ -1423,12 +1479,12 @@ void _glfwTerminateWayland(void)
zxdg_decoration_manager_v1_destroy(_glfw.wl.decorationManager);
if (_glfw.wl.wmBase)
xdg_wm_base_destroy(_glfw.wl.wmBase);
if (_glfw.wl.dataSource)
wl_data_source_destroy(_glfw.wl.dataSource);
if (_glfw.wl.selectionOffer)
wl_data_offer_destroy(_glfw.wl.selectionOffer);
if (_glfw.wl.selectionSource)
wl_data_source_destroy(_glfw.wl.selectionSource);
if (_glfw.wl.dataDevice)
wl_data_device_destroy(_glfw.wl.dataDevice);
if (_glfw.wl.dataOffer)
wl_data_offer_destroy(_glfw.wl.dataOffer);
if (_glfw.wl.dataDeviceManager)
wl_data_device_manager_destroy(_glfw.wl.dataDeviceManager);
if (_glfw.wl.pointer)