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#include <wayfire/per-output-plugin.hpp>
#include <wayfire/view.hpp>
#include <wayfire/workarea.hpp>
#include <wayfire/matcher.hpp>
#include <wayfire/workspace-set.hpp>
#include <wayfire/output.hpp>
#include <wayfire/signal-definitions.hpp>
#include <wayfire/txn/transaction-manager.hpp>
#include "deco-subsurface.hpp"
#include "wayfire/core.hpp"
#include "wayfire/plugin.hpp"
#include "wayfire/signal-provider.hpp"
#include "wayfire/toplevel-view.hpp"
#include "wayfire/toplevel.hpp"
class wayfire_decoration : public wf::plugin_interface_t
{
wf::view_matcher_t ignore_views{"decoration/ignore_views"};
wf::view_matcher_t forced_views{"decoration/forced_views"};
wf::signal::connection_t<wf::txn::new_transaction_signal> on_new_tx =
[=] (wf::txn::new_transaction_signal *ev)
{
// For each transaction, we need to consider what happens with participating views
for (const auto& obj : ev->tx->get_objects())
{
if (auto toplevel = std::dynamic_pointer_cast<wf::toplevel_t>(obj))
{
// First check whether the toplevel already has decoration
// In that case, we should just set the correct margins
if (auto deco = toplevel->get_data<wf::simple_decorator_t>())
{
toplevel->pending().margins = deco->get_margins(toplevel->pending());
continue;
}
// Second case: the view is already mapped, or the transaction does not map it.
// The view is not being decorated, so nothing to do here.
if (toplevel->current().mapped || !toplevel->pending().mapped)
{
continue;
}
// Third case: the transaction will map the toplevel.
auto view = wf::find_view_for_toplevel(toplevel);
wf::dassert(view != nullptr, "Mapping a toplevel means there must be a corresponding view!");
if (should_decorate_view(view))
{
adjust_new_decorations(view);
}
}
}
};
wf::signal::connection_t<wf::view_decoration_state_updated_signal> on_decoration_state_changed =
[=] (wf::view_decoration_state_updated_signal *ev)
{
update_view_decoration(ev->view);
};
// allows criteria containing maximized or floating check
wf::signal::connection_t<wf::view_tiled_signal> on_view_tiled =
[=] (wf::view_tiled_signal *ev)
{
update_view_decoration(ev->view);
};
public:
void init() override
{
wf::get_core().connect(&on_decoration_state_changed);
wf::get_core().tx_manager->connect(&on_new_tx);
wf::get_core().connect(&on_view_tiled);
for (auto& view : wf::get_core().get_all_views())
{
update_view_decoration(view);
}
}
void fini() override
{
for (auto view : wf::get_core().get_all_views())
{
if (auto toplevel = wf::toplevel_cast(view))
{
remove_decoration(toplevel);
wf::get_core().tx_manager->schedule_object(toplevel->toplevel());
}
}
}
/**
* Uses view_matcher_t to match whether the given view needs to be
* ignored for decoration
*
* @param view The view to match
* @return Whether the given view should be decorated?
*/
bool ignore_decoration_of_view(wayfire_view view)
{
return ignore_views.matches(view);
}
/**
* Uses view_matcher_t to match whether to force decorations onto the
* given view
*
* @param view The view to match
* @return Whether the given view should be decorated?
*/
bool force_decoration_of_view(wayfire_view view)
{
return forced_views.matches(view);
}
bool should_decorate_view(wayfire_toplevel_view view)
{
return !ignore_decoration_of_view(view) &&
(force_decoration_of_view(view) || view->should_be_decorated());
}
void adjust_new_decorations(wayfire_toplevel_view view)
{
auto toplevel = view->toplevel();
toplevel->store_data(std::make_unique<wf::simple_decorator_t>(view));
auto deco = toplevel->get_data<wf::simple_decorator_t>();
auto& pending = toplevel->pending();
pending.margins = deco->get_margins(pending);
if (!pending.fullscreen && !pending.tiled_edges)
{
pending.geometry = wf::expand_geometry_by_margins(pending.geometry, pending.margins);
if (view->get_output())
{
pending.geometry = wf::clamp(pending.geometry, view->get_output()->workarea->get_workarea());
}
}
}
void remove_decoration(wayfire_toplevel_view view)
{
view->toplevel()->erase_data<wf::simple_decorator_t>();
auto& pending = view->toplevel()->pending();
if (!pending.fullscreen && !pending.tiled_edges)
{
pending.geometry = wf::shrink_geometry_by_margins(pending.geometry, pending.margins);
}
pending.margins = {0, 0, 0, 0};
}
bool is_toplevel_decorated(const std::shared_ptr<wf::toplevel_t>& toplevel)
{
return toplevel->has_data<wf::simple_decorator_t>();
}
void update_view_decoration(wayfire_view view)
{
if (auto toplevel = wf::toplevel_cast(view))
{
const bool wants_decoration = should_decorate_view(toplevel);
if (wants_decoration != is_toplevel_decorated(toplevel->toplevel()))
{
if (wants_decoration)
{
adjust_new_decorations(toplevel);
} else
{
remove_decoration(toplevel);
}
wf::get_core().tx_manager->schedule_object(toplevel->toplevel());
}
}
}
};
DECLARE_WAYFIRE_PLUGIN(wayfire_decoration);
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