1 files changed, 106 insertions, 0 deletions
diff --git a/app_manager.cpp b/app_manager.cpp
new file mode 100644
index 0000000..3132efd
--- /dev/null
+++ b/app_manager.cpp
@@ -0,0 +1,106 @@
+#include "app_manager.hpp"
+#include "api.hpp"
+#include "apps/main_clock.hpp"
+#include "apps/home_menu.hpp"
+#include "apps/settings/main.hpp"
+
+#define NUMBER_OF_APPS 3
+// From pico-watch.c:
+extern Api app_api;
+
+std::vector<BaseApp*> open_apps;
+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
+
+// Called by app_init to create the app object.
+int app_create(int app_id) {
+    switch (app_id) {
+        case 0: open_apps.push_back(new app_home_menu(&app_api)); break;
+        default: __breakpoint();
+    }
+}
+
+// Init a new app, that is not running.
+int app_init(int app_id) {
+    app_api.display_fill(0,1); // Clear OLED
+    app_api.performance_render_interval_set(500); // Reset interval
+
+    if (app_id > NUMBER_OF_APPS-1 or app_id < 0) {
+        printf("Tried to init app %d", app_id);
+        return app_init(0);
+    }
+
+    if (!APPS_IS_INIT[app_id]) {
+        app_create(app_id);
+        /* int status = (*APPS_FUNC_INIT[app_id])(&app_api);
+
+        switch (status) {
+            case Api::app_init_return_status::MALLOC_FAILED:
+                printf("App init failed (alloc), ");
+                for (int i=0; i<10; i++) {
+                    if ((*APPS_FUNC_INIT[app_id])(&app_api) != Api::app_init_return_status::MALLOC_FAILED) {
+                        printf("worked after %d tries\n", i);
+                        APPS_IS_INIT[app_id] = 1;
+                        return app_id;
+                    }
+                }
+                // Instead, the current app could continue running: return current_app
+                printf("gave up, launching app 0\n");
+                return app_init(0); // Note: this has to work (and should)
+            
+            default: // OK and unhandled status codes
+                printf("App init, status: %d\n", status);
+                break;
+        } */
+        APPS_IS_INIT[app_id] = 1;
+    }
+    return app_id;
+}
+
+// Allow the running app, referenced by app_id, to invoke its render routine.
+int app_render(int app_id) {
+    for (auto app : open_apps) {
+        if (app_id == app->app_id)
+            return app->render(&app_api);
+    }
+}
+
+// Delta is in ms, from time_since_button_press()
+int app_btnpressed(int app_id, uint gpio, unsigned long delta) {
+    for (auto app : open_apps) {
+        if (app_id == app->app_id)
+            return app->btnpressed(&app_api, gpio, delta);
+    }
+}
+
+// Quit the app referenced by the app_id.
+int app_destroy(int app_id) {
+    BaseApp* to_destroy;
+
+    for (auto app : open_apps) {
+        if (app_id == app->app_id)
+            to_destroy = app;
+    }
+    delete to_destroy;
+    // FIXME: Remove app from list
+    //open_apps.erase(std::remove(open_apps.begin(), open_apps.end(), to_destroy), open_apps.end()); // See https://stackoverflow.com/a/27306171/15578170
+
+    APPS_IS_INIT[app_id] = 0;
+    return 0;
+}
+
+// Requests the current app to be replaced by an other one. The replacement will be done at the right moment.
+void app_switch_request(int to_appid) {
+    if (!g_s.app_switch_requested)
+        g_s.app_switch_to_app = to_appid;
+    g_s.app_switch_requested = true;
+    app_api.performance_render_interval_set(0); // This will be reset on new app init
+}
+
+void app_switch(int old_appid, int new_appid) {
+    g_s.app_ready = false;
+    if (APPS_DESTROY_ON_EXIT[old_appid])
+        app_destroy(old_appid);
+    g_s.current_app = app_init(new_appid);
+    g_s.app_ready = true;
+}