Begin implementing mod UI API

CMakeLists.txt

@@ -163,6 +163,7 @@ set (SOURCES
     ${CMAKE_SOURCE_DIR}/src/ui/ui_elements.cpp
     ${CMAKE_SOURCE_DIR}/src/ui/ui_mod_details_panel.cpp
     ${CMAKE_SOURCE_DIR}/src/ui/ui_mod_menu.cpp
+    ${CMAKE_SOURCE_DIR}/src/ui/ui_api.cpp
     ${CMAKE_SOURCE_DIR}/src/ui/util/hsv.cpp
     ${CMAKE_SOURCE_DIR}/src/ui/core/ui_context.cpp
     ${CMAKE_SOURCE_DIR}/src/ui/elements/ui_button.cpp

include/recomp_ui.h

@@ -108,6 +108,7 @@ namespace recompui {
 
     Rml::ElementPtr create_custom_element(Rml::Element* parent, std::string tag);
     Rml::ElementDocument* load_document(const std::filesystem::path& path);
+    Rml::ElementDocument* create_empty_document();
 }
 
 #endif

src/main/main.cpp

@@ -599,6 +599,8 @@ int main(int argc, char** argv) {
         recomp::register_game(game);
     }
 
+    recompui::register_ui_exports();
+
     zelda64::register_overlays();
     zelda64::register_patches();
     zelda64::load_config();

src/ui/core/ui_context.cpp

@@ -178,6 +178,34 @@ recompui::ContextId recompui::create_context(Rml::ElementDocument* document) {
     return create_context_impl(document);
 }
 
+recompui::ContextId recompui::create_context() {
+    Rml::ElementDocument* doc = create_empty_document();
+    ContextId ret = create_context_impl(doc);
+    Element* root = ret.get_root_element();
+    // Mark the root element as not being a shim, as that's only needed for elements that were parented to Rml ones manually.
+    root->shim = false;
+
+    // TODO move these defaults elsewhere. Copied from the existing rcss.
+    ret.open();
+    root->set_width(100.0f, Unit::Percent);
+    root->set_height(100.0f, Unit::Percent);
+    root->set_display(Display::Flex);
+    root->set_opacity(1.0f);
+    root->set_font_family("chiaro");
+    root->set_font_style(FontStyle::Normal);
+    root->set_font_weight(400);
+
+    float sz = 16.0f;
+    float spacing = 0.0f;
+    float sz_add = sz + 4;
+    root->set_font_size(sz_add, Unit::Dp);
+    root->set_letter_spacing(sz_add * spacing, Unit::Dp);
+    root->set_line_height(sz_add, Unit::Dp);
+    ret.close();
+
+    return ret;
+}
+
 void recompui::destroy_context(ContextId id) {
     bool existed = false;
 
@@ -209,6 +237,8 @@ void recompui::destroy_context(ContextId id) {
 }
 
 void recompui::destroy_all_contexts() {
+    recompui::hide_all_contexts();
+
     std::lock_guard lock{ context_state.all_contexts_lock };
 
     // TODO prevent deletion of a context while its mutex is in use. Second lock on the context's mutex before popping

src/ui/core/ui_context.h

@@ -51,8 +51,11 @@ namespace recompui {
 
     ContextId create_context(const std::filesystem::path& path);
     ContextId create_context(Rml::ElementDocument* document);
+    ContextId create_context();
     void destroy_context(ContextId id);
     ContextId get_current_context();
     ContextId get_context_from_document(Rml::ElementDocument* document);
     void destroy_all_contexts();
+
+    void register_ui_exports();
 } // namespace recompui

src/ui/core/ui_resource.h

@@ -8,6 +8,8 @@ namespace recompui {
     struct ResourceId {
         uint32_t slot_id;
 
+        bool operator==(const ResourceId& rhs) const = default;
+
         const Style* operator*() const;
         Style* operator*();
         

src/ui/elements/ui_button.cpp

@@ -4,7 +4,7 @@
 
 namespace recompui {
 
-    Button::Button(const std::string &text, ButtonStyle style, Element *parent) : Element(parent, Events(EventType::Click, EventType::Hover, EventType::Enable), "button") {
+    Button::Button(Element *parent, const std::string &text, ButtonStyle style) : Element(parent, Events(EventType::Click, EventType::Hover, EventType::Enable), "button") {
         this->style = style;
 
         set_text(text);

src/ui/elements/ui_button.h

@@ -20,7 +20,7 @@ namespace recompui {
         // Element overrides.
         virtual void process_event(const Event &e) override;
     public:
-        Button(const std::string &text, ButtonStyle style, Element *parent);
+        Button(Element *parent, const std::string &text, ButtonStyle style);
         void add_pressed_callback(std::function<void()> callback);
     };
 

src/ui/elements/ui_container.cpp

@@ -4,7 +4,7 @@
 
 namespace recompui {
 
-    Container::Container(FlexDirection direction, JustifyContent justify_content, Element *parent) : Element(parent) {
+    Container::Container(Element *parent, FlexDirection direction, JustifyContent justify_content) : Element(parent) {
         set_display(Display::Flex);
         set_flex(1.0f, 1.0f);
         set_flex_direction(direction);

src/ui/elements/ui_container.h

@@ -6,7 +6,7 @@ namespace recompui {
 
     class Container : public Element {
     public:
-        Container(FlexDirection direction, JustifyContent justify_content, Element *parent);
+        Container(Element* parent, FlexDirection direction, JustifyContent justify_content);
     };
 
 } // namespace recompui

src/ui/elements/ui_element.cpp

@@ -203,6 +203,9 @@ void Element::process_event(const Event &) {
 }
 
 void Element::clear_children() {
+    if (children.empty()) {
+        return;
+    }
     ContextId context = get_current_context();
 
     // Remove the children from the context.

src/ui/elements/ui_element.h

@@ -8,6 +8,7 @@
 namespace recompui {
 class Element : public Style, public Rml::EventListener {
     friend ContextId create_context(const std::filesystem::path& path);
+    friend ContextId create_context();
 private:
     Rml::Element *base = nullptr;
     Rml::ElementPtr base_owning = {};

src/ui/elements/ui_label.cpp

@@ -4,7 +4,7 @@
 
 namespace recompui {
 
-    Label::Label(LabelStyle label_style, Element *parent) : Element(parent) {
+    Label::Label(Element *parent, LabelStyle label_style) : Element(parent) {
         switch (label_style) {
         case LabelStyle::Small:
             set_font_size(20.0f);
@@ -29,7 +29,7 @@ namespace recompui {
         set_font_style(FontStyle::Normal);
     }
 
-    Label::Label(const std::string &text, LabelStyle label_style, Element *parent) : Label(label_style, parent) {
+    Label::Label(Element *parent, const std::string &text, LabelStyle label_style) : Label(parent, label_style) {
         set_text(text);
     }
 

src/ui/elements/ui_label.h

@@ -12,8 +12,8 @@ namespace recompui {
 
     class Label : public Element {
     public:
-        Label(LabelStyle label_style, Element *parent);
-        Label(const std::string &text, LabelStyle label_style, Element *parent);
+        Label(Element *parent, LabelStyle label_style);
+        Label(Element *parent, const std::string &text, LabelStyle label_style);
     };
 
 } // namespace recompui

src/ui/elements/ui_radio.cpp

@@ -4,7 +4,7 @@ namespace recompui {
 
     // RadioOption
 
-    RadioOption::RadioOption(std::string_view name, uint32_t index, Element *parent) : Element(parent, Events(EventType::Click, EventType::Focus, EventType::Hover, EventType::Enable), "label") {
+    RadioOption::RadioOption(Element *parent, std::string_view name, uint32_t index) : Element(parent, Events(EventType::Click, EventType::Focus, EventType::Hover, EventType::Enable), "label") {
         this->index = index;
 
         set_text(name);
@@ -68,7 +68,7 @@ namespace recompui {
         set_index_internal(index, false, true);
     }
 
-    Radio::Radio(Element *parent) : Container(FlexDirection::Row, JustifyContent::FlexStart, parent) {
+    Radio::Radio(Element *parent) : Container(parent, FlexDirection::Row, JustifyContent::FlexStart) {
         set_gap(12.0f);
     }
 
@@ -77,7 +77,7 @@ namespace recompui {
     }
 
     void Radio::add_option(std::string_view name) {
-        RadioOption *option = get_current_context().create_element<RadioOption>(name, uint32_t(options.size()), this);
+        RadioOption *option = get_current_context().create_element<RadioOption>(this, name, uint32_t(options.size()));
         option->set_pressed_callback(std::bind(&Radio::option_selected, this, std::placeholders::_1));
         options.emplace_back(option);
 

src/ui/elements/ui_radio.h

@@ -13,7 +13,7 @@ namespace recompui {
     protected:
         virtual void process_event(const Event &e) override;
     public:
-        RadioOption(std::string_view name, uint32_t index, Element *parent);
+        RadioOption(Element *parent, std::string_view name, uint32_t index);
         void set_pressed_callback(std::function<void(uint32_t)> callback);
         void set_selected_state(bool enable);
     };

src/ui/elements/ui_scroll_container.cpp

@@ -4,7 +4,7 @@
 
 namespace recompui {
     
-    ScrollContainer::ScrollContainer(ScrollDirection direction, Element *parent) : Element(parent) {
+    ScrollContainer::ScrollContainer(Element *parent, ScrollDirection direction) : Element(parent) {
         set_flex(1.0f, 1.0f, 100.0f);
         set_width(100.0f, Unit::Percent);
         set_height(100.0f, Unit::Percent);

src/ui/elements/ui_scroll_container.h

@@ -11,7 +11,7 @@ namespace recompui {
 
     class ScrollContainer : public Element {
     public:
-        ScrollContainer(ScrollDirection direction, Element *parent);
+        ScrollContainer(Element *parent, ScrollDirection direction);
     };
 
 } // namespace recompui

src/ui/elements/ui_slider.cpp

@@ -60,7 +60,7 @@ namespace recompui {
         }
     }
 
-    Slider::Slider(SliderType type, Element *parent) : Element(parent) {
+    Slider::Slider(Element *parent, SliderType type) : Element(parent) {
         this->type = type;
 
         set_display(Display::Flex);
@@ -69,7 +69,7 @@ namespace recompui {
 
         ContextId context = get_current_context();
 
-        value_label = context.create_element<Label>("0", LabelStyle::Small, this);
+        value_label = context.create_element<Label>(this, "0", LabelStyle::Small);
         value_label->set_margin_right(20.0f);
         value_label->set_min_width(60.0f);
         value_label->set_max_width(60.0f);

src/ui/elements/ui_slider.h

@@ -34,7 +34,7 @@ namespace recompui {
         void update_label_text();
 
     public:
-        Slider(SliderType type, Element *parent);
+        Slider(Element *parent, SliderType type);
         virtual ~Slider();
         void set_value(double v);
         double get_value() const;

src/ui/elements/ui_style.cpp

@@ -475,4 +475,8 @@ namespace recompui {
         set_property(Rml::PropertyId::TabIndex, to_rml(tab_index), Animation());
     }
 
+    void Style::set_font_family(std::string_view family) {
+        set_property(Rml::PropertyId::FontFamily, Rml::Property(Rml::String{ family }, Rml::Unit::UNKNOWN), Animation());
+    }
+
 } // namespace recompui

src/ui/elements/ui_style.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string_view>
+
 #include "RmlUi/Core.h"
 
 #include "../core/ui_resource.h"
@@ -84,6 +86,7 @@ namespace recompui {
         void set_column_gap(float size, Unit unit = Unit::Dp, Animation animation = Animation());
         void set_drag(Drag drag);
         void set_tab_index(TabIndex focus);
+        void set_font_family(std::string_view family);
         virtual bool is_element() { return false; }
         ResourceId get_resource_id() { return resource_id; }
     };

src/ui/elements/ui_types.h

@@ -171,7 +171,7 @@ namespace recompui {
         Percent
     };
 
-    enum class AnimationType {
+    enum class AnimationType : uint32_t {
         None,
         Set,
         Tween

src/ui/ui_api.cpp

@@ -0,0 +1,254 @@
+#include "recomp_ui.h"
+
+#include "core/ui_context.h"
+#include "core/ui_resource.h"
+
+#include "elements/ui_element.h"
+#include "elements/ui_button.h"
+#include "elements/ui_clickable.h"
+#include "elements/ui_container.h"
+#include "elements/ui_image.h"
+#include "elements/ui_label.h"
+#include "elements/ui_radio.h"
+#include "elements/ui_scroll_container.h"
+#include "elements/ui_slider.h"
+#include "elements/ui_style.h"
+#include "elements/ui_text_input.h"
+#include "elements/ui_toggle.h"
+#include "elements/ui_types.h"
+
+#include "librecomp/overlays.hpp"
+#include "librecomp/helpers.hpp"
+
+using namespace recompui;
+
+constexpr ResourceId root_element_id{ 0xFFFFFFFE };
+
+// Helpers
+
+ContextId get_context(uint8_t* rdram, recomp_context* ctx) {
+    uint32_t context_id = _arg<0, uint32_t>(rdram, ctx);
+    return ContextId{ .slot_id = context_id };
+}
+
+template <int arg_index>
+std::string arg_string(uint8_t* rdram, recomp_context* ctx) {
+    PTR(char) str = _arg<arg_index, PTR(char)>(rdram, ctx);
+
+    // Get the length of the byteswapped string.
+    size_t len = 0;
+    while (MEM_B(str, len) != 0x00) {
+        len++;
+    }
+
+    std::string ret{};
+    ret.reserve(len + 1);
+
+    for (size_t i = 0; i < len; i++) {
+        ret += (char)MEM_B(str, i);
+    }
+
+    return ret;
+}
+
+template <int arg_index>
+ResourceId arg_resource_id(uint8_t* rdram, recomp_context* ctx) {
+    uint32_t slot_id = _arg<arg_index, uint32_t>(rdram, ctx);
+    
+    return ResourceId{ .slot_id = slot_id };
+}
+
+template <int arg_index>
+Element* arg_element(uint8_t* rdram, recomp_context* ctx, ContextId ui_context) {
+    ResourceId resource = arg_resource_id<arg_index>(rdram, ctx);
+
+    if (resource == ResourceId::null()) {
+        return nullptr;
+    }
+    else if (resource == root_element_id) {
+        return ui_context.get_root_element();
+    }
+
+    return resource.as_element();
+}
+
+template <int arg_index>
+Style* arg_style(uint8_t* rdram, recomp_context* ctx) {
+    ResourceId resource = arg_resource_id<arg_index>(rdram, ctx);
+
+    if (resource == ResourceId::null()) {
+        return nullptr;
+    }
+
+    return *resource;
+}
+
+template <int arg_index>
+Animation arg_animation(uint8_t* rdram, recomp_context* ctx) {
+    PTR(Animation) anim_ptr = _arg<arg_index, PTR(Animation)>(rdram, ctx);
+    
+    if (anim_ptr == NULLPTR) {
+        return Animation{};
+    }
+    else {
+        return *TO_PTR(Animation, anim_ptr);
+    }
+}
+
+void return_resource(recomp_context* ctx, ResourceId resource) {
+    _return<uint32_t>(ctx, resource.slot_id);
+}
+
+// Context functions
+
+extern "C" void recompui_create_context(uint8_t* rdram, recomp_context* ctx) {
+    (void)rdram;
+    ContextId ui_context = create_context();
+    
+    _return<uint32_t>(ctx, ui_context.slot_id);
+}
+
+extern "C" void recompui_open_context(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+
+    ui_context.open();
+}
+
+extern "C" void recompui_close_context(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+
+    ui_context.close();
+}
+
+extern "C" void recompui_context_root(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+    (void)ui_context;
+
+    return_resource(ctx, root_element_id);
+}
+
+extern "C" void recompui_show_context(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+
+    recompui::show_context(ui_context, "");
+}
+
+extern "C" void recompui_hide_context(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+
+    recompui::hide_context(ui_context);
+}
+
+// Resource creation functions
+
+extern "C" void recompui_create_style(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+
+    Style* ret = ui_context.create_style();
+    return_resource(ctx, ret->get_resource_id());
+}
+
+extern "C" void recompui_create_element(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+    Element* parent = arg_element<1>(rdram, ctx, ui_context);
+
+    Element* ret = ui_context.create_element<Element>(parent);
+    return_resource(ctx, ret->get_resource_id());
+}
+
+extern "C" void recompui_create_button(uint8_t* rdram, recomp_context* ctx) {
+    ContextId ui_context = get_context(rdram, ctx);
+    Element* parent = arg_element<1>(rdram, ctx, ui_context);
+    std::string text = arg_string<2>(rdram, ctx);
+    uint32_t style = _arg<3, uint32_t>(rdram, ctx);
+
+    Button* ret = ui_context.create_element<Button>(parent, text, static_cast<ButtonStyle>(style));
+    return_resource(ctx, ret->get_resource_id());
+}
+
+// Style functions
+
+extern "C" void recompui_set_width(uint8_t* rdram, recomp_context* ctx) {
+    Style* resource = arg_style<0>(rdram, ctx);
+    float width = _arg_float_a1(rdram, ctx);
+    uint32_t unit = _arg<2, uint32_t>(rdram, ctx);
+    Animation animation = arg_animation<3>(rdram, ctx);
+
+    resource->set_width(width, static_cast<Unit>(unit), animation);
+}
+
+extern "C" void recompui_set_height(uint8_t* rdram, recomp_context* ctx) {
+    Style* resource = arg_style<0>(rdram, ctx);
+    float height = _arg_float_a1(rdram, ctx);
+    uint32_t unit = _arg<2, uint32_t>(rdram, ctx);
+    Animation animation = arg_animation<3>(rdram, ctx);
+
+    resource->set_height(height, static_cast<Unit>(unit), animation);
+}
+
+extern "C" void recompui_set_display(uint8_t* rdram, recomp_context* ctx) {
+    Style* resource = arg_style<0>(rdram, ctx);
+    uint32_t display = _arg<1, uint32_t>(rdram, ctx);
+
+    resource->set_display(static_cast<Display>(display));
+}
+
+extern "C" void recompui_set_flex_direction(uint8_t* rdram, recomp_context* ctx) {
+    Style* resource = arg_style<0>(rdram, ctx);
+    uint32_t direction = _arg<1, uint32_t>(rdram, ctx);
+
+    resource->set_flex_direction(static_cast<FlexDirection>(direction));
+}
+
+extern "C" void recompui_set_flex_grow(uint8_t* rdram, recomp_context* ctx) { // float grow, Animation animation = Animation()
+    Style* resource = arg_style<0>(rdram, ctx);
+    float grow = _arg_float_a1(rdram, ctx);
+    Animation animation = arg_animation<2>(rdram, ctx);
+
+    resource->set_flex_grow(grow, animation);
+}
+
+extern "C" void recompui_set_flex_shrink(uint8_t* rdram, recomp_context* ctx) { // float shrink, Animation animation = Animation()
+    Style* resource = arg_style<0>(rdram, ctx);
+    float shrink = _arg_float_a1(rdram, ctx);
+    Animation animation = arg_animation<2>(rdram, ctx);
+
+    resource->set_flex_shrink(shrink, animation);
+}
+
+extern "C" void recompui_set_flex_basis_auto(uint8_t* rdram, recomp_context* ctx) {
+    Style* resource = arg_style<0>(rdram, ctx);
+
+    resource->set_flex_basis_auto();
+}
+
+extern "C" void recompui_set_flex_basis(uint8_t* rdram, recomp_context* ctx) { // float basis, Unit unit = Unit::Percent, Animation animation = Animation()
+    Style* resource = arg_style<0>(rdram, ctx);
+    float basis = _arg_float_a1(rdram, ctx);
+    uint32_t unit = _arg<2, uint32_t>(rdram, ctx);
+    Animation animation = arg_animation<3>(rdram, ctx);
+
+    resource->set_flex_basis(basis, static_cast<Unit>(unit), animation);
+}
+
+#define REGISTER_FUNC(name) recomp::overlays::register_base_export(#name, name)
+
+void recompui::register_ui_exports() {
+    REGISTER_FUNC(recompui_create_context);
+    REGISTER_FUNC(recompui_open_context);
+    REGISTER_FUNC(recompui_close_context);
+    REGISTER_FUNC(recompui_context_root);
+    REGISTER_FUNC(recompui_show_context);
+    REGISTER_FUNC(recompui_hide_context);
+    REGISTER_FUNC(recompui_create_style);
+    REGISTER_FUNC(recompui_create_element);
+    REGISTER_FUNC(recompui_create_button);
+    REGISTER_FUNC(recompui_set_width);
+    REGISTER_FUNC(recompui_set_height);
+    REGISTER_FUNC(recompui_set_display);
+    REGISTER_FUNC(recompui_set_flex_direction);
+    REGISTER_FUNC(recompui_set_flex_grow);
+    REGISTER_FUNC(recompui_set_flex_shrink);
+    REGISTER_FUNC(recompui_set_flex_basis_auto);
+    REGISTER_FUNC(recompui_set_flex_basis);
+}

src/ui/ui_config_sub_menu.cpp

@@ -25,7 +25,7 @@ ConfigOptionElement::ConfigOptionElement(Element *parent) : Element(parent, Even
     set_gap(8.0f);
     set_min_height(100.0f);
 
-    name_label = get_current_context().create_element<Label>(LabelStyle::Normal, this);
+    name_label = get_current_context().create_element<Label>(this, LabelStyle::Normal);
 }
 
 ConfigOptionElement::~ConfigOptionElement() {
@@ -56,8 +56,8 @@ void ConfigOptionSlider::slider_value_changed(double v) {
     printf("%s changed to %f.\n", name.c_str(), v);
 }
 
-ConfigOptionSlider::ConfigOptionSlider(double value, double min_value, double max_value, double step_value, bool percent, Element *parent) : ConfigOptionElement(parent) {
-    slider = get_current_context().create_element<Slider>(percent ? SliderType::Percent : SliderType::Double, this);
+ConfigOptionSlider::ConfigOptionSlider(Element *parent, double value, double min_value, double max_value, double step_value, bool percent) : ConfigOptionElement(parent) {
+    slider = get_current_context().create_element<Slider>(this, percent ? SliderType::Percent : SliderType::Double);
     slider->set_value(value);
     slider->set_min_value(min_value);
     slider->set_max_value(max_value);
@@ -83,7 +83,7 @@ void ConfigOptionRadio::index_changed(uint32_t index) {
     printf("%s changed to %d.\n", name.c_str(), index);
 }
 
-ConfigOptionRadio::ConfigOptionRadio(const std::vector<std::string> &options, Element *parent) : ConfigOptionElement(parent) {
+ConfigOptionRadio::ConfigOptionRadio(Element *parent, const std::vector<std::string> &options) : ConfigOptionElement(parent) {
     radio = get_current_context().create_element<Radio>(this);
     radio->add_index_changed_callback(std::bind(&ConfigOptionRadio::index_changed, this, std::placeholders::_1));
     for (std::string_view option : options) {
@@ -127,25 +127,25 @@ ConfigSubMenu::ConfigSubMenu(Element *parent) : Element(parent) {
     set_height(100.0f, Unit::Percent);
 
     recompui::ContextId context = get_current_context();
-    header_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::FlexStart, this);
+    header_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::FlexStart);
 
     {
-        back_button = context.create_element<Button>("Back", ButtonStyle::Secondary, header_container);
+        back_button = context.create_element<Button>(header_container, "Back", ButtonStyle::Secondary);
         back_button->add_pressed_callback(std::bind(&ConfigSubMenu::back_button_pressed, this));
-        title_label = context.create_element<Label>("Title", LabelStyle::Large, header_container);
+        title_label = context.create_element<Label>(header_container, "Title", LabelStyle::Large);
     }
 
-    body_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::SpaceEvenly, this);
+    body_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::SpaceEvenly);
     {
-        config_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::Center, body_container);
+        config_container = context.create_element<Container>(body_container, FlexDirection::Column, JustifyContent::Center);
         config_container->set_display(Display::Block);
         config_container->set_flex_basis(100.0f);
         config_container->set_align_items(AlignItems::Center);
         {
-            config_scroll_container = context.create_element<ScrollContainer>(ScrollDirection::Vertical, config_container);
+            config_scroll_container = context.create_element<ScrollContainer>(config_container, ScrollDirection::Vertical);
         }
 
-        description_label = context.create_element<Label>("Description", LabelStyle::Small, body_container);
+        description_label = context.create_element<Label>(body_container, "Description", LabelStyle::Small);
         description_label->set_min_width(800.0f);
     }
 }
@@ -172,7 +172,7 @@ void ConfigSubMenu::add_option(ConfigOptionElement *option, std::string_view nam
 }
 
 void ConfigSubMenu::add_slider_option(std::string_view name, std::string_view description, double min, double max, double step, bool percent) {
-    ConfigOptionSlider *option_slider = get_current_context().create_element<ConfigOptionSlider>((min + max) / 2.0, min, max, step, percent, config_scroll_container);
+    ConfigOptionSlider *option_slider = get_current_context().create_element<ConfigOptionSlider>(config_scroll_container, (min + max) / 2.0, min, max, step, percent);
     add_option(option_slider, name, description);
 }
 
@@ -182,7 +182,7 @@ void ConfigSubMenu::add_text_option(std::string_view name, std::string_view desc
 }
 
 void ConfigSubMenu::add_radio_option(std::string_view name, std::string_view description, const std::vector<std::string> &options) {
-    ConfigOptionRadio *option_radio = get_current_context().create_element<ConfigOptionRadio>(options, config_scroll_container);
+    ConfigOptionRadio *option_radio = get_current_context().create_element<ConfigOptionRadio>(config_scroll_container, options);
     add_option(option_radio, name, description);
 }
 

src/ui/ui_config_sub_menu.h

@@ -36,7 +36,7 @@ protected:
 
     void slider_value_changed(double v);
 public:
-    ConfigOptionSlider(double value, double min_value, double max_value, double step_value, bool percent, Element *parent);
+    ConfigOptionSlider(Element *parent, double value, double min_value, double max_value, double step_value, bool percent);
 };
 
 class ConfigOptionTextInput : public ConfigOptionElement {
@@ -54,7 +54,7 @@ protected:
 
     void index_changed(uint32_t index);
 public:
-    ConfigOptionRadio(const std::vector<std::string> &options, Element *parent);
+    ConfigOptionRadio(Element *parent, const std::vector<std::string> &options);
 };
 
 class ConfigSubMenu : public Element {

src/ui/ui_mod_details_panel.cpp

@@ -14,13 +14,13 @@ ModDetailsPanel::ModDetailsPanel(Element *parent) : Element(parent) {
 
     ContextId context = get_current_context();
 
-    header_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::FlexStart, this);
+    header_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::FlexStart);
     header_container->set_flex(0.0f, 0.0f);
     header_container->set_padding(16.0f);
     header_container->set_gap(16.0f);
     header_container->set_background_color(Color{ 0, 0, 0, 89 });
     {
-        thumbnail_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::SpaceEvenly, header_container);
+        thumbnail_container = context.create_element<Container>(header_container, FlexDirection::Column, JustifyContent::SpaceEvenly);
         thumbnail_container->set_flex(0.0f, 0.0f);
         {
             thumbnail_image = context.create_element<Image>(thumbnail_container);
@@ -29,38 +29,38 @@ ModDetailsPanel::ModDetailsPanel(Element *parent) : Element(parent) {
             thumbnail_image->set_background_color(Color{ 190, 184, 219, 25 });
         }
 
-        header_details_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::SpaceEvenly, header_container);
+        header_details_container = context.create_element<Container>(header_container, FlexDirection::Column, JustifyContent::SpaceEvenly);
         header_details_container->set_flex(1.0f, 1.0f);
         header_details_container->set_flex_basis(100.0f, Unit::Percent);
         header_details_container->set_text_align(TextAlign::Left);
         {
-            title_label = context.create_element<Label>(LabelStyle::Large, header_details_container);
-            version_label = context.create_element<Label>(LabelStyle::Normal, header_details_container);
+            title_label = context.create_element<Label>(header_details_container, LabelStyle::Large);
+            version_label = context.create_element<Label>(header_details_container, LabelStyle::Normal);
         }
     }
 
-    body_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::FlexStart, this);
+    body_container = context.create_element<Container>(this, FlexDirection::Column, JustifyContent::FlexStart);
     body_container->set_flex(0.0f, 0.0f);
     body_container->set_text_align(TextAlign::Left);
     body_container->set_padding(16.0f);
     body_container->set_gap(16.0f);
     {
-        description_label = context.create_element<Label>(LabelStyle::Normal, body_container);
-        authors_label = context.create_element<Label>(LabelStyle::Normal, body_container);
+        description_label = context.create_element<Label>(body_container, LabelStyle::Normal);
+        authors_label = context.create_element<Label>(body_container, LabelStyle::Normal);
     }
     
     spacer_element = context.create_element<Element>(this);
     spacer_element->set_flex(1.0f, 0.0f);
     
-    buttons_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::SpaceAround, this);
+    buttons_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::SpaceAround);
     buttons_container->set_flex(0.0f, 0.0f);
     buttons_container->set_padding(16.0f);
     {
         enable_toggle = context.create_element<Toggle>(buttons_container);
         enable_toggle->add_checked_callback(std::bind(&ModDetailsPanel::enable_toggle_checked, this, std::placeholders::_1));
-        configure_button = context.create_element<Button>("Configure", recompui::ButtonStyle::Secondary, buttons_container);
+        configure_button = context.create_element<Button>(buttons_container, "Configure", recompui::ButtonStyle::Secondary);
         configure_button->add_pressed_callback(std::bind(&ModDetailsPanel::configure_button_pressed, this));
-        erase_button = context.create_element<Button>("Erase", recompui::ButtonStyle::Secondary, buttons_container);
+        erase_button = context.create_element<Button>(buttons_container, "Erase", recompui::ButtonStyle::Secondary);
     }
 }
 

src/ui/ui_mod_menu.cpp

@@ -40,15 +40,15 @@ ModEntry::ModEntry(Element *parent, const recomp::mods::ModDetails &details, uin
         thumbnail_image->set_min_height(100.0f);
         thumbnail_image->set_background_color(Color{ 190, 184, 219, 25 });
 
-        body_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::FlexStart, this);
+        body_container = context.create_element<Container>(this, FlexDirection::Column, JustifyContent::FlexStart);
         body_container->set_width_auto();
         body_container->set_height(100.0f);
         body_container->set_margin_left(16.0f);
         body_container->set_overflow(Overflow::Hidden);
 
         {
-            name_label = context.create_element<Label>(details.mod_id, LabelStyle::Normal, body_container);
-            description_label = context.create_element<Label>("Short description of mod here.", LabelStyle::Small, body_container);
+            name_label = context.create_element<Label>(body_container, details.mod_id, LabelStyle::Normal);
+            description_label = context.create_element<Label>(body_container, "Short description of mod here.", LabelStyle::Small);
         } // body_container
     } // this
 }
@@ -174,12 +174,12 @@ ModMenu::ModMenu(Element *parent) : Element(parent) {
     set_height(100.0f, Unit::Percent);
     
     {
-        body_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::FlexStart, this);
+        body_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::FlexStart);
         body_container->set_flex(1.0f, 1.0f, 100.0f);
         body_container->set_width(100.0f, Unit::Percent);
         body_container->set_height(100.0f, Unit::Percent);
         {
-            list_container = context.create_element<Container>(FlexDirection::Column, JustifyContent::Center, body_container);
+            list_container = context.create_element<Container>(body_container, FlexDirection::Column, JustifyContent::Center);
             list_container->set_display(Display::Block);
             list_container->set_flex_basis(100.0f);
             list_container->set_align_items(AlignItems::Center);
@@ -187,7 +187,7 @@ ModMenu::ModMenu(Element *parent) : Element(parent) {
             list_container->set_background_color(Color{ 0, 0, 0, 89 });
             list_container->set_border_bottom_left_radius(16.0f);
             {
-                list_scroll_container = context.create_element<ScrollContainer>(ScrollDirection::Vertical, list_container);
+                list_scroll_container = context.create_element<ScrollContainer>(list_container, ScrollDirection::Vertical);
             } // list_container
 
             mod_details_panel = context.create_element<ModDetailsPanel>(body_container);
@@ -196,7 +196,7 @@ ModMenu::ModMenu(Element *parent) : Element(parent) {
         } // body_container
         
 
-        footer_container = context.create_element<Container>(FlexDirection::Row, JustifyContent::SpaceBetween, this);
+        footer_container = context.create_element<Container>(this, FlexDirection::Row, JustifyContent::SpaceBetween);
         footer_container->set_width(100.0f, recompui::Unit::Percent);
         footer_container->set_align_items(recompui::AlignItems::Center);
         footer_container->set_background_color(Color{ 0, 0, 0, 89 });
@@ -206,7 +206,7 @@ ModMenu::ModMenu(Element *parent) : Element(parent) {
         footer_container->set_border_bottom_left_radius(16.0f);
         footer_container->set_border_bottom_right_radius(16.0f);
         {
-            refresh_button = context.create_element<Button>("Refresh", recompui::ButtonStyle::Primary, footer_container);
+            refresh_button = context.create_element<Button>(footer_container, "Refresh", recompui::ButtonStyle::Primary);
             refresh_button->add_pressed_callback(std::bind(&ModMenu::refresh_mods, this));
         } // footer_container
     } // this

src/ui/ui_renderer.h

@@ -4,10 +4,10 @@
 #include <memory>
 
 namespace RT64 {
-    class RenderInterface;
-    class RenderDevice;
-    class RenderCommandList;
-    class RenderFramebuffer;
+    struct RenderInterface;
+    struct RenderDevice;
+    struct RenderCommandList;
+    struct RenderFramebuffer;
 };
 
 namespace Rml {

src/ui/ui_state.cpp

@@ -650,7 +650,6 @@ void draw_hook(RT64::RenderCommandList* command_list, RT64::RenderFramebuffer* s
                 break;
             }
 
-            recompui::hide_all_contexts();
             if (open_config) {
                 recompui::show_context(recompui::get_config_context_id(), "");
             }
@@ -770,3 +769,9 @@ Rml::ElementDocument* recompui::load_document(const std::filesystem::path& path)
     return ui_state->context->LoadDocument(path.string());
 }
 
+Rml::ElementDocument* recompui::create_empty_document() {
+    std::lock_guard lock{ui_state_mutex};
+
+    return ui_state->context->CreateDocument();
+}
+