File chooser navigation

include/gui/Button.hpp

@@ -22,6 +22,7 @@ namespace gsr {
         void set_border_scale(float scale);
 
         const std::string& get_text() const;
+        void set_text(std::string str);
 
         std::function<void()> on_click;
     private:

include/gui/FileChooser.hpp

@@ -1,16 +1,51 @@
 #pragma once
 
 #include "Widget.hpp"
+#include "ScrollablePage.hpp"
 #include <functional>
 #include <vector>
 
 #include <mglpp/graphics/Text.hpp>
+#include <mglpp/graphics/Sprite.hpp>
 #include <mglpp/system/Clock.hpp>
 
 // This currently only supports displaying folders
 // TODO: Support files as well
 
 namespace gsr {
+    class FileChooser;
+
+    class FileChooserBody : public Widget {
+        friend class FileChooser;
+    public:
+        FileChooserBody(FileChooser *file_chooser, mgl::vec2f size);
+        FileChooserBody(const FileChooserBody&) = delete;
+        FileChooserBody& operator=(const FileChooserBody&) = delete;
+
+        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;
+        mgl::vec2f get_inner_size() override;
+        void set_size(mgl::vec2f size);
+    private:
+        void set_current_directory(const char *directory);
+    private:
+        struct Folder {
+            mgl::Text text;
+            time_t last_modified_seconds = 0;
+        };
+
+        FileChooser *file_chooser = nullptr;
+        mgl::vec2f size;
+        mgl::vec2f inner_size;
+        std::vector<Folder> folders;
+        int mouse_over_item = -1;
+        int selected_item = -1;
+        mgl::Clock double_click_timer;
+        int times_clicked_within_timer = 0;
+    };
+
     class FileChooser : public Widget {
     public:
         FileChooser(const char *start_directory, mgl::vec2f size);
@@ -23,6 +58,9 @@ namespace gsr {
         mgl::vec2f get_size() override;
 
         void set_current_directory(const char *directory);
+        void open_subdirectory(const char *name);
+        void open_parent_directory();
+        const std::string& get_current_directory() const;
     private:
         struct Folder {
             mgl::Text text;
@@ -31,10 +69,8 @@ namespace gsr {
 
         mgl::vec2f size;
         mgl::Text current_directory_text;
-        int mouse_over_item = -1;
-        int selected_item = -1;
-        std::vector<Folder> folders;
-        mgl::Clock double_click_timer;
-        int times_clicked_within_timer = 0;
+        mgl::Sprite up_arrow_sprite;
+        ScrollablePage scrollable_page;
+        FileChooserBody *file_chooser_body_ptr = nullptr;
     };
 }

include/gui/GsrPage.hpp

@@ -3,6 +3,7 @@
 #include "Page.hpp"
 #include "Button.hpp"
 
+#include <functional>
 #include <mglpp/graphics/Text.hpp>
 
 namespace gsr {
@@ -19,9 +20,12 @@ namespace gsr {
         mgl::vec2f get_inner_size() override;
 
         void set_margins(float top, float bottom, float left, float right);
-        void set_on_back_button_click(std::function<void()> on_click_handler);
+        void add_button(const std::string &text, const std::string &id, mgl::Color color);
+
+        std::function<void(const std::string &id)> on_click;
     private:
         void draw_page_label(mgl::Window &window, mgl::vec2f body_pos);
+        void draw_buttons(mgl::Window &window, mgl::vec2f body_pos, mgl::vec2f body_size);
         void draw_children(mgl::Window &window, mgl::vec2f position);
 
         float get_border_size() const;
@@ -29,11 +33,16 @@ namespace gsr {
         mgl::vec2f get_content_position();
         mgl::vec2f get_content_position_with_margin();
     private:
+        struct ButtonItem {
+            std::unique_ptr<Button> button;
+            std::string id;
+        };
+
         float margin_top_scale = 0.0f;
         float margin_bottom_scale = 0.0f;
         float margin_left_scale = 0.0f;
         float margin_right_scale = 0.0f;
-        Button back_button;
         mgl::Text label_text;
+        std::vector<ButtonItem> buttons;
     };
 }

include/gui/ScrollablePage.hpp

@@ -18,8 +18,12 @@ namespace gsr {
         void set_size(mgl::vec2f size);
 
         void add_widget(std::unique_ptr<Widget> widget);
+
+        void reset_scroll();
     private:
         mgl::vec2f size;
         SafeVector<std::unique_ptr<Widget>> widgets;
+        int scroll_target_y = 0;
+        double scroll_y = 0.0;
     };
 }

include/gui/Utils.hpp

@@ -13,4 +13,6 @@ namespace mgl {
 namespace gsr {
     // Inner border
     void draw_rectangle_outline(mgl::Window &window, mgl::vec2f pos, mgl::vec2f size, mgl::Color color, float border_size);
+    double get_frame_delta_seconds();
+    void set_frame_delta_seconds(double frame_delta);
 }