Implement preliminary settings app

5 files changed, 119 insertions, 10 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ec8115..0b0cc8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,6 +50,8 @@ add_executable(pico-watch
         apps/home_menu.hpp
         apps/main_clock.cpp
         apps/main_clock.hpp
+        apps/settings/main.cpp
+        apps/settings/main.hpp
 	)
 
 pico_set_program_name(pico-watch "pico-watch")
diff --git a/apps/home_menu.cpp b/apps/home_menu.cpp
index 531a53c..239ffda 100644
--- a/apps/home_menu.cpp
+++ b/apps/home_menu.cpp
@@ -8,11 +8,11 @@
 extern void app_switch(int old_appid, int new_appid);
 extern bool rtc_get_datetime(datetime_t *t);
 
-#define NUMBER_OF_APPS 2
+#define NUMBER_OF_APPS 3
 #define SIZE_APP_NAME 12
 
 namespace app_home_menu {
-    const char *APPS_NAME[NUMBER_OF_APPS] = {"Home", "Clock"};
+    const char *APPS_NAME[NUMBER_OF_APPS] = {"Home", "Clock", "Settings"};
     int selected_app = 0;
     char display_app_name[SIZE_APP_NAME];
 
diff --git a/apps/settings/main.cpp b/apps/settings/main.cpp
new file mode 100644
index 0000000..a5e1c83
--- /dev/null
+++ b/apps/settings/main.cpp
@@ -0,0 +1,93 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+
+#include "main.hpp"
+#include "../../api.hpp"
+
+extern void app_switch(int old_appid, int new_appid);
+extern bool rtc_get_datetime(datetime_t *t);
+
+#define MAIN_SET_NUM 4
+#define MAIN_SET_NUM_STR "4"
+#define SIZE_SETTING_NAME 12
+#define SET0_NAME "Time"
+#define SET1_NAME "Date"
+#define SET2_NAME "Brightness"
+#define SET3_NAME "Sleep delay"
+
+namespace app_settings {
+    const char *MAIN_SET_NAMES[MAIN_SET_NUM] = {SET0_NAME, SET1_NAME, SET2_NAME, SET3_NAME};
+    int selected_setting = 0;
+    char display_setting_name[SIZE_SETTING_NAME];
+    bool selected = false;
+
+    void show_title(Api *app_api) {
+        std::string title_str {"Settings (/" MAIN_SET_NUM_STR ")"};
+        title_str.insert(10, std::to_string(selected_setting+1));
+        app_api->gui_header_text(title_str);
+    }
+
+    // Rendering of app
+    int render(Api *app_api) {
+        show_title(app_api);
+        app_api->display_write_string(0,0,3, display_setting_name, FONT_12x16, 0, 1);
+
+        if (selected) {
+            selected = false;
+            switch (selected_setting) {
+                case 0:
+                    app_api->gui_popup_text(SET0_NAME, "Todo!");
+                    break;
+                case 1:
+                    app_api->gui_popup_text(SET1_NAME, "Todo!");
+                    break;
+            }
+        }
+
+        return 0;
+    }
+
+    // Example of how button inputs could be interpreted.
+    // Drawing on screen should be done in the render function.
+    int btnpressed(Api *app_api, uint gpio, unsigned long delta) {
+        switch (gpio) {
+            case BUTTON_SELECT:
+                selected = true;
+                break;
+            case BUTTON_DOWN:
+                selected_setting--;
+                break;
+            case BUTTON_UP:
+                selected_setting++;
+                break;
+        }
+        if (selected_setting > MAIN_SET_NUM-1) {
+            selected_setting = MAIN_SET_NUM-1;
+        } else if (selected_setting < 0) {
+            selected_setting = 0;
+        }
+        // Add spaces to avoid "ghost" characters from app names displayed before
+        snprintf(display_setting_name, SIZE_SETTING_NAME, "%s             ", MAIN_SET_NAMES[selected_setting]);
+        return 0;
+    }
+
+    // Initlisation of the app.
+    int init(Api *app_api) {
+        app_api->performance_set(Api::perf_modes::LOW_POWER);
+        app_api->performance_render_interval_set(100);
+        selected_setting = 0;
+        selected = false;
+        snprintf(display_setting_name, SIZE_SETTING_NAME, "%s", MAIN_SET_NAMES[0]);
+        return Api::app_init_return_status::OK;
+    }
+
+    // Processor intensive operations and functions related to drawing to the screen should only be done when the app is in_foreground(=1). This function is only called when the app is init.
+    int bgrefresh(Api *app_api, bool in_foreground) {
+        return 1;
+    }
+
+    // Destruction of app, deinitlisation should be done here. This is only called if the app's APPS_DESTROY_ON_EXIT is set to 1. When it is not a "service" app.
+    int destroy(Api *app_api) {
+        return 0;
+    }
+}
diff --git a/apps/settings/main.hpp b/apps/settings/main.hpp
new file mode 100644
index 0000000..0626dc7
--- /dev/null
+++ b/apps/settings/main.hpp
@@ -0,0 +1,13 @@
+#ifndef __SETTINGS_H__
+#define __SETTINGS_H__
+#include "../../api.hpp"
+
+namespace app_settings {
+    int init(Api *app_api);
+    int render(Api *app_api);
+    int btnpressed(Api *app_api, uint gpio, unsigned long delta);
+    int bgrefresh(Api *app_api, bool in_foreground);
+    int destroy(Api *app_api);
+}
+
+#endif
diff --git a/pico-watch.cpp b/pico-watch.cpp
index bbaa679..8673e33 100644
--- a/pico-watch.cpp
+++ b/pico-watch.cpp
@@ -10,19 +10,20 @@
 #include "buttons.hpp"
 #include "apps/main_clock.hpp"
 #include "apps/home_menu.hpp"
+#include "apps/settings/main.hpp"
 
 global_status g_s;
 Api app_api;
 
-#define NUMBER_OF_APPS 2
+#define NUMBER_OF_APPS 3
 #define APP_DATA_BUFFER_LEN 256
-int (*APPS_FUNC_INIT[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::init, app_main_clock::init};
-int (*APPS_FUNC_RENDER[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::render, app_main_clock::render};
-int (*APPS_FUNC_BTNPRESS[NUMBER_OF_APPS])(Api *app_api, uint gpio, unsigned long delta) = {app_home_menu::btnpressed, app_main_clock::btnpressed};
-int (*APPS_FUNC_BGREFRESH[NUMBER_OF_APPS])(Api *app_api, bool in_foreground) = {app_home_menu::bgrefresh, app_main_clock::bgrefresh};
-int (*APPS_FUNC_DESTROY[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::destroy, app_main_clock::destroy};
-int APPS_DESTROY_ON_EXIT[NUMBER_OF_APPS] = {0, 1};
-int APPS_IS_INIT[NUMBER_OF_APPS] = {0, 0}; // Only run in background if init
+int (*APPS_FUNC_INIT[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::init, app_main_clock::init, app_settings::init};
+int (*APPS_FUNC_RENDER[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::render, app_main_clock::render, app_settings::render};
+int (*APPS_FUNC_BTNPRESS[NUMBER_OF_APPS])(Api *app_api, uint gpio, unsigned long delta) = {app_home_menu::btnpressed, app_main_clock::btnpressed, app_settings::btnpressed};
+int (*APPS_FUNC_BGREFRESH[NUMBER_OF_APPS])(Api *app_api, bool in_foreground) = {app_home_menu::bgrefresh, app_main_clock::bgrefresh, app_settings::bgrefresh};
+int (*APPS_FUNC_DESTROY[NUMBER_OF_APPS])(Api *app_api) = {app_home_menu::destroy, app_main_clock::destroy, app_settings::destroy};
+int APPS_DESTROY_ON_EXIT[NUMBER_OF_APPS] = {0, 1, 1};
+int APPS_IS_INIT[NUMBER_OF_APPS] = {0}; // Only run in background if init
 
 int app_init(int app_id) {
     app_api.display_fill(0,1); // Clear OLED