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LibGUI+WindowServer: Allow specifying an optional drag bitmap

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This bitmap is displayed alongside the dragged text underneath the
mouse cursor while dragging.

This will be a perfect fit for dragging e.g files around. :^)
This commit is contained in:
Andreas Kling 2019-12-08 17:08:39 +01:00
parent 183ee5847c
commit f5dfb29607
5 changed files with 36 additions and 6 deletions
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9
Libraries/LibGUI/GItemView.cpp
View file

@ -113,14 +113,23 @@ void GItemView::mousemove_event(GMouseEvent& event)
dbg() << "Initiate drag!";
auto drag_operation = GDragOperation::construct();
RefPtr<GraphicsBitmap> bitmap;
StringBuilder builder;
selection().for_each_index([&](auto& index) {
auto data = model()->data(index);
builder.append(data.to_string());
builder.append(" ");
if (!bitmap) {
GVariant icon_data = model()->data(index, GModel::Role::Icon);
if (icon_data.is_icon())
bitmap = icon_data.as_icon().bitmap_for_size(32);
}
});
drag_operation->set_text(builder.to_string());
drag_operation->set_bitmap(bitmap);
auto outcome = drag_operation->exec();
switch (outcome) {
case GDragOperation::Outcome::Accepted: