Add settings viewer (#23)

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## Description
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Adds a skeleton for enabling a settings editor.
For now, it just shows the settings (as a viewer).
Fixes descrepency with view for credits.
Improve text to show available actions on the browser.

## Motivation and Context
<!--- What does this sample do? What problem does it solve? -->
<!--- If it fixes/closes/resolves an open issue, please link to the
issue here -->
It will help others to finalise the editor implementation in future and
enables current users to view the settings.

## How Has This Been Tested?
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## Screenshots
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## Types of changes
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the boxes that apply: -->
- [x] Improvement (non-breaking change that adds a new feature)
- [ ] Bug fix (fixes an issue)
- [ ] Breaking change (breaking change)
- [ ] Config and build (change in the configuration and build system,
has no impact on code or features)

## Checklist:
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- [ ] My code follows the code style of this project.
- [ ] My change requires a change to the documentation.
- [ ] I have updated the documentation accordingly.
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.

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Signed-off-by: GITHUB_USER <GITHUB_USER_EMAIL>

Makefile

@@ -61,6 +61,7 @@ SRCS = \
 	menu/views/music_player.c \
 	menu/views/startup.c \
 	menu/views/system_info.c \
+	menu/views/settings_editor.c \
 	utils/fs.c
 
 FONTS = \

src/menu/actions.c

@@ -22,6 +22,7 @@ static void actions_clear (menu_t *menu) {
     menu->actions.options = false;
     menu->actions.system_info = false;
     menu->actions.settings = false;
+    menu->actions.credits = false;
 }
 
 static void actions_update_direction (menu_t *menu) {
@@ -90,9 +91,11 @@ static void actions_update_buttons (menu_t *menu) {
         menu->actions.back = true;
     } else if (pressed.r) {
         menu->actions.options = true;
-    } else if (pressed.l) {
+    } else if (pressed.z) {
         menu->actions.system_info = true;
     } else if (pressed.start) {
+        menu->actions.credits = true;
+    } else if (pressed.l) {
         menu->actions.settings = true;
     }
 }

src/menu/menu.c

@@ -146,6 +146,7 @@ static struct views_s {
     { view_image_viewer_init, view_image_viewer_display }, // MENU_MODE_IMAGE_VIEWER
     { view_music_player_init, view_music_player_display }, // MENU_MODE_MUSIC_PLAYER
     { view_credits_init, view_credits_display }, // MENU_MODE_CREDITS
+    { view_settings_init, view_settings_display }, // MENU_MODE_SETTINGS_EDITOR
     { view_load_rom_init, view_load_rom_display }, // MENU_MODE_LOAD_ROM
     { view_load_disk_init, view_load_disk_display }, // MENU_MODE_LOAD_DISK
     { view_load_emulator_init, view_load_emulator_display }, // MENU_MODE_LOAD_EMULATOR

src/menu/menu_state.h

@@ -31,6 +31,7 @@ typedef enum {
     MENU_MODE_IMAGE_VIEWER,
     MENU_MODE_MUSIC_PLAYER,
     MENU_MODE_CREDITS,
+    MENU_MODE_SETTINGS_EDITOR,
     MENU_MODE_LOAD_ROM,
     MENU_MODE_LOAD_DISK,
     MENU_MODE_LOAD_EMULATOR,
@@ -84,6 +85,7 @@ typedef struct {
         bool options;
         bool system_info;
         bool settings;
+        bool credits;
     } actions;
 
     struct {

src/menu/views/browser.c

@@ -286,8 +286,10 @@ static void process (menu_t *menu) {
         component_context_menu_show(&entry_context_menu);
     } else if (menu->actions.system_info) {
         menu->next_mode = MENU_MODE_SYSTEM_INFO;
-    } else if (menu->actions.settings) {
+    } else if (menu->actions.credits) {
         menu->next_mode = MENU_MODE_CREDITS;
+    } else if (menu->actions.settings) {
+        menu->next_mode = MENU_MODE_SETTINGS_EDITOR;
     }
 }
 
@@ -332,7 +334,7 @@ static void draw (menu_t *menu, surface_t *d) {
     if (menu->current_time >= 0) {
         component_actions_bar_text_draw(
             ALIGN_CENTER, VALIGN_TOP,
-            "\n"
+            "Z: System Info | Start: Credits\n"
             "%s",
             ctime(&menu->current_time)
         );

src/menu/views/settings_editor.c

@@ -0,0 +1,70 @@
+#include "views.h"
+
+static char *convert_boolean (int state) {
+    switch (state) {
+        case 0: return "Off";
+        case 1: return "On";
+        default: return "Unknown";
+    }
+}
+
+static void process (menu_t *menu) {
+    if (menu->actions.back) {
+        menu->next_mode = MENU_MODE_BROWSER;
+    }
+}
+
+static void draw (menu_t *menu, surface_t *d) {
+    rdpq_attach(d, NULL);
+
+    component_background_draw();
+
+    component_layout_draw();
+
+	component_main_text_draw(
+        ALIGN_CENTER, VALIGN_TOP,
+        "SETTINGS EDITOR\n"
+        "\n"
+    );
+
+    component_main_text_draw(
+        ALIGN_LEFT, VALIGN_TOP,
+        "\n"
+        "\n"
+        "pal60_enabled:         %s\n"
+        "hidden_files_enabled:  %s\n"
+        "default_directory:     %s\n"
+        "use_saves_folder:      %s\n"
+        "autodetect_rom_region: %s\n"
+        "bgm_enabled:           %s\n"
+        "sound_enabled:         %s\n"
+        "rumble_enabled:        %s\n",
+        convert_boolean(menu->settings.pal60_enabled),
+        convert_boolean(menu->settings.hidden_files_enabled),
+        menu->settings.default_directory,
+        convert_boolean(menu->settings.use_saves_folder),
+        convert_boolean(menu->settings.autodetect_rom_region),
+        convert_boolean(menu->settings.bgm_enabled),
+        convert_boolean(menu->settings.sound_enabled),
+        convert_boolean(menu->settings.rumble_enabled)
+    );
+
+
+    component_actions_bar_text_draw(
+        ALIGN_LEFT, VALIGN_TOP,
+        "\n"
+        "B: Back"
+    );
+
+    rdpq_detach_show();
+}
+
+
+void view_settings_init (menu_t *menu) {
+    // Nothing to initialize (yet)
+}
+
+void view_settings_display (menu_t *menu, surface_t *display) {
+    process(menu);
+    draw(menu, display);
+}

src/menu/views/views.h

@@ -44,6 +44,9 @@ void view_load_rom_display (menu_t *menu, surface_t *display);
 void view_load_disk_init (menu_t *menu);
 void view_load_disk_display (menu_t *menu, surface_t *display);
 
+void view_settings_init (menu_t *menu);
+void view_settings_display (menu_t *menu, surface_t *display);
+
 void view_load_emulator_init (menu_t *menu);
 void view_load_emulator_display (menu_t *menu, surface_t *display);