Removing FAP files (use FlipC or Official store!)

Applications/Official/source-OLDER/xMasterX/counter/README.md

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+# Dolphin counter
+This is a simple plugin for the [Flipper Zero](https://www.flipperzero.one).
+It gives you access to a counter which you can increment and decrement using the up and down buttons respectively.
+
+![preview](https://github.com/Krulknul/dolphin-counter/blob/main/media/preview.gif)
+
+# How to install this?
+I'd recommend using [flipperzero-ufbt](https://github.com/flipperdevices/flipperzero-ufbt), which is a lightweight tool for quickly testing Flipper Zero applications. The app will stay present on your device so it is not necessary to flash the entire firmware.

Applications/Official/source-OLDER/xMasterX/counter/application.fam

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+App(
+    appid="counter",
+    name="Counter",
+    apptype=FlipperAppType.PLUGIN,
+    entry_point="counterapp",
+    requires=[
+        "gui",
+    ],
+    fap_category="Misc_Extra",
+    fap_icon="icons/counter_icon.png",
+    fap_icon_assets="icons",
+)

Applications/Official/source-OLDER/xMasterX/counter/counter.c

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+#include <furi.h>
+#include <gui/gui.h>
+#include <input/input.h>
+#include <stdlib.h>
+#include <counter_icons.h>
+
+#define MAX_COUNT 99
+#define BOXTIME 2
+#define BOXWIDTH 30
+#define MIDDLE_X 64 - BOXWIDTH / 2
+#define MIDDLE_Y 32 - BOXWIDTH / 2
+#define OFFSET_Y 9
+
+typedef struct {
+    FuriMessageQueue* input_queue;
+    ViewPort* view_port;
+    Gui* gui;
+    FuriMutex** mutex;
+
+    int count;
+    bool pressed;
+    int boxtimer;
+} Counter;
+
+void state_free(Counter* c) {
+    gui_remove_view_port(c->gui, c->view_port);
+    furi_record_close(RECORD_GUI);
+    view_port_free(c->view_port);
+    furi_message_queue_free(c->input_queue);
+    furi_mutex_free(c->mutex);
+    free(c);
+}
+
+static void input_callback(InputEvent* input_event, void* ctx) {
+    Counter* c = ctx;
+    if(input_event->type == InputTypeShort) {
+        furi_message_queue_put(c->input_queue, input_event, 0);
+    }
+}
+
+static void render_callback(Canvas* canvas, void* ctx) {
+    Counter* c = ctx;
+    furi_check(furi_mutex_acquire(c->mutex, FuriWaitForever) == FuriStatusOk);
+    canvas_clear(canvas);
+    canvas_set_color(canvas, ColorBlack);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str_aligned(canvas, 64, 10, AlignCenter, AlignCenter, "Counter :)");
+    canvas_set_font(canvas, FontBigNumbers);
+
+    char scount[5];
+    if(c->pressed == true || c->boxtimer > 0) {
+        canvas_draw_rframe(canvas, MIDDLE_X, MIDDLE_Y + OFFSET_Y, BOXWIDTH, BOXWIDTH, 5);
+        canvas_draw_rframe(
+            canvas, MIDDLE_X - 1, MIDDLE_Y + OFFSET_Y - 1, BOXWIDTH + 2, BOXWIDTH + 2, 5);
+        canvas_draw_rframe(
+            canvas, MIDDLE_X - 2, MIDDLE_Y + OFFSET_Y - 2, BOXWIDTH + 4, BOXWIDTH + 4, 5);
+        c->pressed = false;
+        c->boxtimer--;
+    } else {
+        canvas_draw_rframe(canvas, MIDDLE_X, MIDDLE_Y + OFFSET_Y, BOXWIDTH, BOXWIDTH, 5);
+    }
+    snprintf(scount, sizeof(scount), "%d", c->count);
+    canvas_draw_str_aligned(canvas, 64, 32 + OFFSET_Y, AlignCenter, AlignCenter, scount);
+    furi_mutex_release(c->mutex);
+}
+
+Counter* state_init() {
+    Counter* c = malloc(sizeof(Counter));
+    c->input_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
+    c->view_port = view_port_alloc();
+    c->gui = furi_record_open(RECORD_GUI);
+    c->mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+    c->count = 0;
+    c->boxtimer = 0;
+    view_port_input_callback_set(c->view_port, input_callback, c);
+    view_port_draw_callback_set(c->view_port, render_callback, c);
+    gui_add_view_port(c->gui, c->view_port, GuiLayerFullscreen);
+    return c;
+}
+
+int32_t counterapp(void) {
+    Counter* c = state_init();
+
+    while(1) {
+        InputEvent input;
+        while(furi_message_queue_get(c->input_queue, &input, FuriWaitForever) == FuriStatusOk) {
+            furi_check(furi_mutex_acquire(c->mutex, FuriWaitForever) == FuriStatusOk);
+
+            if(input.key == InputKeyBack) {
+                furi_mutex_release(c->mutex);
+                state_free(c);
+                return 0;
+            } else if((input.key == InputKeyUp || input.key == InputKeyOk) && c->count < MAX_COUNT) {
+                c->pressed = true;
+                c->boxtimer = BOXTIME;
+                c->count++;
+            } else if(input.key == InputKeyDown && c->count != 0) {
+                c->pressed = true;
+                c->boxtimer = BOXTIME;
+                c->count--;
+            }
+            furi_mutex_release(c->mutex);
+            view_port_update(c->view_port);
+        }
+    }
+    state_free(c);
+    return 0;
+}