Add flashcart submenu view (#86)

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## Description
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Adds a view to show the flashcart information

## Motivation and Context
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Will be useful to show its features etc.

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## Types of changes
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- [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.
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- [ ] I have updated the documentation accordingly.
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- [ ] All new and existing tests passed.

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Signed-off-by: GITHUB_USER <GITHUB_USER_EMAIL>

Co-authored-by: Mateusz Faderewski <sc@mateuszfaderewski.pl>

Makefile

@@ -64,6 +64,7 @@ SRCS = \
 	menu/views/system_info.c \
 	menu/views/settings_editor.c \
 	menu/views/rtc.c \
+	menu/views/flashcart_info.c \
 	utils/fs.c
 
 FONTS = \

src/menu/menu.c

@@ -152,6 +152,7 @@ static view_t menu_views[] = {
     { MENU_MODE_CREDITS, view_credits_init, view_credits_display },
     { MENU_MODE_SETTINGS_EDITOR, view_settings_init, view_settings_display },
     { MENU_MODE_RTC, view_rtc_init, view_rtc_display },
+    { MENU_MODE_FLASHCART, view_flashcart_info_init, view_flashcart_info_display },
     { MENU_MODE_LOAD_ROM, view_load_rom_init, view_load_rom_display },
     { MENU_MODE_LOAD_DISK, view_load_disk_init, view_load_disk_display },
     { MENU_MODE_LOAD_EMULATOR, view_load_emulator_init, view_load_emulator_display },

src/menu/menu_state.h

@@ -33,6 +33,7 @@ typedef enum {
     MENU_MODE_CREDITS,
     MENU_MODE_SETTINGS_EDITOR,
     MENU_MODE_RTC,
+    MENU_MODE_FLASHCART,
     MENU_MODE_LOAD_ROM,
     MENU_MODE_LOAD_DISK,
     MENU_MODE_LOAD_EMULATOR,

src/menu/views/browser.c

@@ -246,6 +246,7 @@ static component_context_menu_t settings_context_menu = {
         { .text = "Show system info", .action = set_menu_next_mode, .arg = (void *) (MENU_MODE_SYSTEM_INFO) },
         { .text = "Show credits", .action = set_menu_next_mode, .arg = (void *) (MENU_MODE_CREDITS) },
         { .text = "Adjust RTC", .action = set_menu_next_mode, .arg = (void *) (MENU_MODE_RTC) },
+        { .text = "Show cart info", .action = set_menu_next_mode, .arg = (void *) (MENU_MODE_FLASHCART) },
         COMPONENT_CONTEXT_MENU_LIST_END,
     }
 };

src/menu/views/flashcart_info.c

@@ -0,0 +1,46 @@
+#include "views.h"
+
+
+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,
+        "FLASHCART INFORMATION\n"
+    );
+
+    component_main_text_draw(
+        ALIGN_LEFT, VALIGN_TOP,
+        "\n"
+        "\n"
+    );
+
+
+    component_actions_bar_text_draw(
+        ALIGN_LEFT, VALIGN_TOP,
+        "\n"
+        "B: Back"
+    );
+
+    rdpq_detach_show();
+}
+
+
+void view_flashcart_info_init (menu_t *menu) {
+    // Nothing to initialize (yet)
+}
+
+void view_flashcart_info_display (menu_t *menu, surface_t *display) {
+    process(menu);
+    draw(menu, display);
+}

src/menu/views/views.h

@@ -44,6 +44,9 @@ void view_settings_display (menu_t *menu, surface_t *display);
 void view_rtc_init (menu_t *menu);
 void view_rtc_display (menu_t *menu, surface_t *display);
 
+void view_flashcart_info_init (menu_t *menu);
+void view_flashcart_info_display (menu_t *menu, surface_t *display);
+
 void view_load_rom_init (menu_t *menu);
 void view_load_rom_display (menu_t *menu, surface_t *display);