Change fonts, nicer combobox, add/remove audio track button

include/Theme.hpp

@@ -1,6 +1,11 @@
 #pragma once
 
+#include <mglpp/system/MemoryMappedFile.hpp>
 #include <mglpp/graphics/Color.hpp>
+#include <mglpp/graphics/Font.hpp>
+#include <mglpp/graphics/Texture.hpp>
+
+#include <string>
 
 namespace gsr {
     struct GsrInfo;
@@ -10,12 +15,22 @@ namespace gsr {
         Theme(const Theme&) = delete;
         Theme& operator=(const Theme&) = delete;
 
+        float window_height = 0.0f;
+
         mgl::Color tint_color = mgl::Color(118, 185, 0);
         mgl::Color scrollable_page_bg_color = mgl::Color(38, 43, 47);
         mgl::Color text_color = mgl::Color(255, 255, 255);
+
+        mgl::MemoryMappedFile body_font_file;
+        mgl::MemoryMappedFile title_font_file;
+        mgl::Font body_font;
+        mgl::Font title_font;
+        mgl::Font top_bar_font;
+
+        mgl::Texture combobox_arrow;
     };
 
-    void init_theme(const gsr::GsrInfo &gsr_info);
+    bool init_theme(const gsr::GsrInfo &gsr_info, mgl::vec2i window_size, const std::string &resources_path);
     void deinit_theme();
-    const Theme& get_theme();
+    Theme& get_theme();
 }

include/gui/Button.hpp

@@ -9,6 +9,8 @@
 namespace gsr {
     class Button : public Widget {
     public:
+        // If width is 0 then the width of the text is used instead (with padding).
+        // If height is 0 then the height of the text is used instead (with padding).
         Button(mgl::Font *font, const char *text, mgl::vec2f size, mgl::Color bg_color);
         Button(const Button&) = delete;
         Button& operator=(const Button&) = delete;
@@ -16,7 +18,7 @@ namespace gsr {
         bool on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f offset) override;
         void draw(mgl::Window &window, mgl::vec2f offset) override;
 
-        mgl::vec2f get_size() override { return size; }
+        mgl::vec2f get_size() override;
 
         std::function<void()> on_click;
     private:

include/gui/ComboBox.hpp

@@ -2,6 +2,7 @@
 
 #include "Widget.hpp"
 #include <mglpp/graphics/Text.hpp>
+#include <mglpp/graphics/Sprite.hpp>
 #include <string>
 #include <vector>
 
@@ -21,6 +22,7 @@ namespace gsr {
         mgl::vec2f get_size() override;
     private:
         void update_if_dirty();
+        float get_dropdown_arrow_height() const;
     private:
         struct Item {
             mgl::Text text;
@@ -30,6 +32,7 @@ namespace gsr {
         mgl::vec2f max_size;
         mgl::Font *font;
         std::vector<Item> items;
+        mgl::Sprite dropdown_arrow;
         bool dirty = true;
         bool show_dropdown = false;
         size_t selected_item = 0;

include/gui/List.hpp

@@ -25,10 +25,19 @@ namespace gsr {
         bool on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f offset) override;
         void draw(mgl::Window &window, mgl::vec2f offset) override;
 
+        //void remove_child_widget(Widget *widget) override;
+
         void add_widget(std::unique_ptr<Widget> widget);
+        void remove_widget(Widget *widget);
+
         mgl::vec2f get_size() override;
+    private:
+        void update();
+        void remove_widget_immediate(Widget *widget);
     protected:
         std::vector<std::unique_ptr<Widget>> widgets;
+        std::vector<std::unique_ptr<Widget>> add_queue;
+        std::vector<Widget*> remove_queue;
         Orientation orientation;
         Alignment content_alignment;
     };

include/gui/Page.hpp

@@ -12,6 +12,8 @@ namespace gsr {
         Page& operator=(const Page&) = delete;
         virtual ~Page() = default;
 
+        //void remove_child_widget(Widget *widget) override;
+
         void add_widget(std::unique_ptr<Widget> widget);
     protected:
         std::vector<std::unique_ptr<Widget>> widgets;

include/gui/Widget.hpp

@@ -24,6 +24,8 @@ namespace gsr {
         virtual void draw(mgl::Window &window, mgl::vec2f offset) = 0;
         virtual void set_position(mgl::vec2f position);
 
+        //virtual void remove_child_widget(Widget *widget) { (void)widget; }
+
         virtual mgl::vec2f get_position() const;
         virtual mgl::vec2f get_size() = 0;
     protected: