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// license:BSD-3-Clause
// copyright-holders:Vas Crabb
/***************************************************************************
luaengine_render.cpp
Controls execution of the core MAME system.
***************************************************************************/
#include "emu.h"
#include "luaengine.ipp"
#include "render.h"
#include <iterator>
namespace {
struct layout_file_views
{
layout_file_views(layout_file &f) : file(f) { }
layout_file &file;
};
struct layout_view_items
{
layout_view_items(layout_view &v) : view(v) { }
layout_view &view;
};
} // anonymous namespace
namespace sol {
template <> struct is_container<layout_file_views> : std::true_type { };
template <> struct is_container<layout_view_items> : std::true_type { };
template <>
struct usertype_container<layout_file_views> : lua_engine::immutable_container_helper<layout_file_views, layout_file::view_list>
{
private:
using view_list = layout_file::view_list;
template <bool Indexed>
static int next_pairs(lua_State *L)
{
indexed_iterator &i(stack::unqualified_get<user<indexed_iterator> >(L, 1));
if (i.src.end() == i.it)
return stack::push(L, lua_nil);
int result;
if constexpr (Indexed)
result = stack::push(L, i.ix + 1);
else
result = stack::push_reference(L, i.it->unqualified_name());
result += stack::push_reference(L, *i.it);
++i;
return result;
}
template <bool Indexed>
static int start_pairs(lua_State *L)
{
layout_file_views &self(get_self(L));
stack::push(L, next_pairs<Indexed>);
stack::push<user<indexed_iterator> >(L, self.file.views(), self.file.views().begin());
stack::push(L, lua_nil);
return 3;
}
public:
static int at(lua_State *L)
{
layout_file_views &self(get_self(L));
std::ptrdiff_t const index(stack::unqualified_get<std::ptrdiff_t>(L, 2));
if ((0 >= index) || (self.file.views().size() < index))
return stack::push(L, lua_nil);
else
return stack::push_reference(L, *std::next(self.file.views().begin(), index - 1));
}
static int get(lua_State *L)
{
layout_file_views &self(get_self(L));
char const *const name(stack::unqualified_get<char const *>(L));
auto const found(std::find_if(
self.file.views().begin(),
self.file.views().end(),
[&name] (layout_view &v) { return v.unqualified_name() == name; }));
if (self.file.views().end() != found)
return stack::push_reference(L, *found);
else
return stack::push(L, lua_nil);
}
static int index_get(lua_State *L)
{
return get(L);
}
static int index_of(lua_State *L)
{
layout_file_views &self(get_self(L));
layout_view &view(stack::unqualified_get<layout_view>(L, 2));
auto it(self.file.views().begin());
std::ptrdiff_t ix(0);
while ((self.file.views().end() != it) && (&view != &*it))
{
++it;
++ix;
}
if (self.file.views().end() == it)
return stack::push(L, lua_nil);
else
return stack::push(L, ix + 1);
}
static int size(lua_State *L)
{
layout_file_views &self(get_self(L));
return stack::push(L, self.file.views().size());
}
static int empty(lua_State *L)
{
layout_file_views &self(get_self(L));
return stack::push(L, self.file.views().empty());
}
static int next(lua_State *L) { return stack::push(L, next_pairs<false>); }
static int pairs(lua_State *L) { return start_pairs<false>(L); }
static int ipairs(lua_State *L) { return start_pairs<true>(L); }
};
template <>
struct usertype_container<layout_view_items> : lua_engine::immutable_container_helper<layout_view_items, layout_view::item_list>
{
private:
using item_list = layout_view::item_list;
static int next_pairs(lua_State *L)
{
indexed_iterator &i(stack::unqualified_get<user<indexed_iterator> >(L, 1));
if (i.src.end() == i.it)
return stack::push(L, lua_nil);
int result;
result = stack::push(L, i.ix + 1);
result += stack::push_reference(L, *i.it);
++i.it;
++i.ix;
return result;
}
public:
static int at(lua_State *L)
{
layout_view_items &self(get_self(L));
std::ptrdiff_t const index(stack::unqualified_get<std::ptrdiff_t>(L, 2));
if ((0 >= index) || (self.view.items().size() < index))
return stack::push(L, lua_nil);
else
return stack::push_reference(L, *std::next(self.view.items().begin(), index - 1));
}
static int get(lua_State *L)
{
layout_view_items &self(get_self(L));
char const *const id(stack::unqualified_get<char const *>(L));
layout_view::item *const item(self.view.get_item(id));
if (item)
return stack::push_reference(L, *item);
else
return stack::push(L, lua_nil);
}
static int index_get(lua_State *L)
{
return get(L);
}
static int index_of(lua_State *L)
{
layout_view_items &self(get_self(L));
layout_view::item &item(stack::unqualified_get<layout_view::item>(L, 2));
auto it(self.view.items().begin());
std::ptrdiff_t ix(0);
while ((self.view.items().end() != it) && (&item != &*it))
{
++it;
++ix;
}
if (self.view.items().end() == it)
return stack::push(L, lua_nil);
else
return stack::push(L, ix + 1);
}
static int size(lua_State *L)
{
layout_view_items &self(get_self(L));
return stack::push(L, self.view.items().size());
}
static int empty(lua_State *L)
{
layout_view_items &self(get_self(L));
return stack::push(L, self.view.items().empty());
}
static int next(lua_State *L) { return stack::push(L, next_pairs); }
static int pairs(lua_State *L)
{
return luaL_error(L, "sol: cannot call 'pairs' on type '%s': not iterable by ID", sol::detail::demangle<layout_view_items>().c_str());
}
static int ipairs(lua_State *L)
{
layout_view_items &self(get_self(L));
stack::push(L, next_pairs);
stack::push<user<indexed_iterator> >(L, self.view.items(), self.view.items().begin());
stack::push(L, lua_nil);
return 3;
}
};
} // namespace sol
//-------------------------------------------------
// initialize_render - register render user types
//-------------------------------------------------
void lua_engine::initialize_render(sol::table &emu)
{
/* render_bounds library
*
* bounds:includes(x, y) - returns true if point is within bounds
* bounds:set_xy(left, top, right, bottom) - set bounds
* bounds:set_wh(left, top, width, height) - set bounds
*
* bounds.x0 - leftmost X coordinate
* bounds.y0 - topmost Y coordinate
* bounds.x1 - rightmost X coordinate
* bounds.y1 - bottommost Y coordinate
* bounds.width - get/set width
* bounds.height - get/set height
* bounds.aspect - read-only aspect ratio width:height
*/
auto bounds_type = emu.new_usertype<render_bounds>(
"render_bounds",
sol::call_constructor, sol::initializers(
[] (render_bounds &b) { new (&b) render_bounds{ 0.0F, 0.0F, 1.0F, 1.0F }; },
[] (render_bounds &b, float x0, float y0, float x1, float y1) { new (&b) render_bounds{ x0, y0, x1, y1 }; }));
bounds_type["includes"] = &render_bounds::includes;
bounds_type["set_xy"] = &render_bounds::set_xy;
bounds_type["set_wh"] = &render_bounds::set_wh;
bounds_type["x0"] = &render_bounds::x0;
bounds_type["y0"] = &render_bounds::y0;
bounds_type["x1"] = &render_bounds::x1;
bounds_type["y1"] = &render_bounds::y1;
bounds_type["width"] = sol::property(&render_bounds::width, [] (render_bounds &b, float w) { b.x1 = b.x0 + w; });
bounds_type["height"] = sol::property(&render_bounds::height, [] (render_bounds &b, float h) { b.y1 = b.y0 + h; });
bounds_type["aspect"] = sol::property(&render_bounds::aspect);
/* render_color library
*
* set(a, r, g, b) - set color
*
* color.a - alpha channel
* color.r - red channel
* color.g - green channel
* color.b - blue channel
*/
auto color_type = emu.new_usertype<render_color>(
"render_color",
sol::call_constructor, sol::initializers(
[] (render_color &c) { new (&c) render_color{ 1.0F, 1.0F, 1.0F, 1.0F }; },
[] (render_color &c, float a, float r, float g, float b) { new (&c) render_color{ a, r, g, b }; }));
color_type["set"] = &render_color::set;
color_type["a"] = &render_color::a;
color_type["r"] = &render_color::r;
color_type["g"] = &render_color::g;
color_type["b"] = &render_color::b;
/* layout_view library
*
* manager:machine():render().targets[target_index]:current_view()
*
* view:has_screen(screen) - returns whether a given screen is present in the view (including hidden screens)
* view:set_prepare_items_callback(cb) - set additional tasks before adding items to render target
* view:set_preload_callback(cb) - set additional tasks after preloading visible items
* view:set_recomputed_callback(cb) - set additional tasks after recomputing for resize or visibility change
*
* view.items - get the items in the view (including hidden items)
* view.name - display name for the view
* view.unqualified_name - name of the view as specified in the layout file
* view.visible_screen_count - number of screens items currently enabled
* view.effective_aspect - effective aspect ratio in current configuration
* view.bounds - effective bounds in current configuration
* view.has_art - true if the view has non-screen items
*/
auto layout_view_type = sol().registry().new_usertype<layout_view>("layout_view", sol::no_constructor);
layout_view_type["has_screen"] = &layout_view::has_screen;
layout_view_type["set_prepare_items_callback"] =
make_simple_callback_setter<void>(
&layout_view::set_prepare_items_callback,
nullptr,
"set_prepare_items_callback",
nullptr);
layout_view_type["set_preload_callback"] =
make_simple_callback_setter<void>(
&layout_view::set_preload_callback,
nullptr,
"set_preload_callback",
nullptr);
layout_view_type["set_recomputed_callback"] =
make_simple_callback_setter<void>(
&layout_view::set_recomputed_callback,
nullptr,
"set_recomputed_callback",
nullptr);
layout_view_type["items"] = sol::property([] (layout_view &v) { return layout_view_items(v); });
layout_view_type["name"] = sol::property(&layout_view::name);
layout_view_type["unqualified_name"] = sol::property(&layout_view::unqualified_name);
layout_view_type["visible_screen_count"] = sol::property(&layout_view::visible_screen_count);
layout_view_type["effective_aspect"] = sol::property(&layout_view::effective_aspect);
layout_view_type["bounds"] = sol::property(&layout_view::bounds);
layout_view_type["has_art"] = sol::property(&layout_view::has_art);
/* layout_view::item library
*
* item:set_state(state) - set state value used in absence of bindings
* item.set_element_state_callback(cb) - set callback to obtain element state
* item.set_animation_state_callback(cb) - set callback to obtain animation state
* item.set_bounds_callback(cb) - set callback to obtain item bounds
* item.set_color_callback(cb) - set callback to obtain item color
*
* item.id - get optional item identifier
* item.bounds_animated - true if bounds depend on state
* item.color_animated - true if color depends on state
* item.bounds - get bounds for current state
* item.color - get color for current state
* item.blend_mode - get blend mode or -1
* item.orientation - get item orientation
* item.element_state - get effective element state
* item.animation_state - get effective animation state
*/
auto layout_view_item_type = sol().registry().new_usertype<layout_view::item>("layout_item", sol::no_constructor);
layout_view_item_type["set_state"] = &layout_view::item::set_state;
layout_view_item_type["set_element_state_callback"] =
make_simple_callback_setter<int>(
&layout_view::item::set_element_state_callback,
[] () { return 0; },
"set_element_state_callback",
"element state");
layout_view_item_type["set_animation_state_callback"] =
make_simple_callback_setter<int>(
&layout_view::item::set_animation_state_callback,
[] () { return 0; },
"set_animation_state_callback",
"animation state");
layout_view_item_type["set_bounds_callback"] =
[this] (layout_view::item &i, sol::object cb)
{
if (cb == sol::lua_nil)
{
i.set_bounds_callback(layout_view::item::bounds_delegate());
}
else if (cb.is<sol::protected_function>())
{
i.set_bounds_callback(layout_view::item::bounds_delegate(
[this, cbfunc = cb.as<sol::protected_function>()] (render_bounds &b)
{
auto result(invoke(cbfunc).get<sol::optional<render_bounds> >());
if (result)
{
b = *result;
}
else
{
osd_printf_error("[LUA ERROR] invalid return from bounds callback\n");
b = render_bounds{ 0.0, 0.0, 1.0, 1.0 };
}
}));
}
else
{
osd_printf_error("[LUA ERROR] must call set_bounds_callback with function or nil\n");
}
};
layout_view_item_type["set_color_callback"] =
[this] (layout_view::item &i, sol::object cb)
{
if (cb == sol::lua_nil)
{
i.set_color_callback(layout_view::item::color_delegate());
}
else if (cb.is<sol::protected_function>())
{
i.set_color_callback(layout_view::item::color_delegate(
[this, cbfunc = cb.as<sol::protected_function>()] (render_color &c)
{
auto result(invoke(cbfunc).get<sol::optional<render_color> >());
if (result)
{
c = *result;
}
else
{
osd_printf_error("[LUA ERROR] invalid return from color callback\n");
c = render_color{ 1.0, 1.0, 1.0, 1.0 };
}
}));
}
else
{
osd_printf_error("[LUA ERROR] must call set_bounds_callback with function or nil\n");
}
};
layout_view_item_type["id"] = sol::property(
[this] (layout_view::item &i) -> sol::object
{
if (i.id().empty())
return sol::make_object(sol(), sol::lua_nil);
else
return sol::make_object(sol(), i.id());
});
layout_view_item_type["bounds_animated"] = sol::property(&layout_view::item::bounds_animated);
layout_view_item_type["color_animated"] = sol::property(&layout_view::item::color_animated);
layout_view_item_type["bounds"] = sol::property(&layout_view::item::bounds);
layout_view_item_type["color"] = sol::property(&layout_view::item::color);
layout_view_item_type["blend_mode"] = sol::property(&layout_view::item::blend_mode);
layout_view_item_type["orientation"] = sol::property(&layout_view::item::orientation);
layout_view_item_type["element_state"] = sol::property(&layout_view::item::element_state);
layout_view_item_type["animation_state"] = sol::property(&layout_view::item::animation_state);
/* layout_file library
*
* file:set_resolve_tags_callback(cb) - set additional tasks after resolving tags
*
* file.device - get device that caused the file to be loaded
* file.views[] - get view table (k=name, v=layout_view)
*/
auto layout_file_type = sol().registry().new_usertype<layout_file>("layout_file", sol::no_constructor);
layout_file_type["set_resolve_tags_callback"] =
make_simple_callback_setter<void>(
&layout_file::set_resolve_tags_callback,
nullptr,
"set_resolve_tags_callback",
nullptr);
layout_file_type["device"] = sol::property(&layout_file::device);
layout_file_type["views"] = sol::property([] (layout_file &f) { return layout_file_views(f); });
/* render_target library
*
* manager:machine():render().targets[target_index]
* manager:machine():render():ui_target()
*
* target:current_view() - get current view for target
* target:width() - get target width
* target:height() - get target height
* target:pixel_aspect() - get target aspect
* target:hidden() - is target hidden
* target:is_ui_target() - is ui render target
* target:index() - target index
* target:view_name([opt] index) - current target layout view name
*
* target.max_update_rate -
* target.view - current target layout view
* target.orientation - current target orientation
* target.screen_overlay - enable overlays
* target.zoom - enable zoom
*/
auto target_type = sol().registry().new_usertype<render_target>("target", sol::no_constructor);
target_type["current_view"] = &render_target::current_view;
target_type["width"] = &render_target::width;
target_type["height"] = &render_target::height;
target_type["pixel_aspect"] = &render_target::pixel_aspect;
target_type["hidden"] = &render_target::hidden;
target_type["is_ui_target"] = &render_target::is_ui_target;
target_type["index"] = &render_target::index;
target_type["view_name"] = &render_target::view_name;
target_type["max_update_rate"] = sol::property(&render_target::max_update_rate, &render_target::set_max_update_rate);
target_type["view"] = sol::property(&render_target::view, &render_target::set_view);
target_type["orientation"] = sol::property(&render_target::orientation, &render_target::set_orientation);
target_type["screen_overlay"] = sol::property(&render_target::screen_overlay_enabled, &render_target::set_screen_overlay_enabled);
target_type["zoom"] = sol::property(&render_target::zoom_to_screen, &render_target::set_zoom_to_screen);
/* render_container library
*
* manager:machine():render():ui_container()
*
* container.orientation
* container.xscale
* container.yscale
* container.xoffset
* container.yoffset
* container.is_empty
*/
auto render_container_type = sol().registry().new_usertype<render_container>("render_container", sol::no_constructor);
render_container_type["orientation"] = sol::property(&render_container::orientation);
render_container_type["xscale"] = sol::property(&render_container::xscale);
render_container_type["yscale"] = sol::property(&render_container::yscale);
render_container_type["xoffset"] = sol::property(&render_container::xoffset);
render_container_type["yoffset"] = sol::property(&render_container::yoffset);
render_container_type["is_empty"] = sol::property(&render_container::is_empty);
/* render_manager library
*
* manager:machine():render()
*
* render:max_update_rate() -
* render:ui_target() - render_target for ui drawing
* render:ui_container() - render_container for ui drawing
*
* render.targets[] - render_target table
*/
auto render_type = sol().registry().new_usertype<render_manager>("render", sol::no_constructor);
render_type["max_update_rate"] = &render_manager::max_update_rate;
render_type["ui_target"] = &render_manager::ui_target;
render_type["ui_container"] = &render_manager::ui_container;
render_type["targets"] = sol::property([] (render_manager &m) { return simple_list_wrapper<render_target>(m.targets()); });
}
|