Add new ImageView (in progress)

2026-05-20 11:51:27 -07:00 · 2025-06-09 16:51:57 +02:00
parent 415b3d7eb3
commit 7f20419455
3 changed files with 98 additions and 0 deletions
@@ -0,0 +1,25 @@
+{
+"name": "ImageView",
+"publisher": "MicroPythonOS",
+"short_description": "Image Viewer",
+"long_description": "Opens and shows images on the display.",
+"icon_url": "https://apps.micropythonos.com/apps/com.micropythonos.imageview/icons/com.micropythonos.imageview_0.0.1_64x64.png",
+"download_url": "https://apps.micropythonos.com/apps/com.micropythonos.imageview/mpks/com.micropythonos.imageview_0.0.1.mpk",
+"fullname": "com.micropythonos.imageview",
+"version": "0.0.1",
+"entrypoint": "assets/imageview.py",
+"category": "graphics",
+"activities": [
+    {
+      "entrypoint": "assets/imageview.py",
+      "classname": "ImageView",
+      "intent_filters": [
+        {
+          "action": "main",
+          "category": "launcher"
+        }
+      ]
+    }
+  ]
+}
+
@@ -0,0 +1,73 @@
+import os
+import time
+
+from mpos.apps import Activity
+
+class ImageView(Activity):
+
+    imagedir = "../icons/"
+    images = []
+    image_nr = 0
+    image_timer = None
+    image = None
+    image_dsc = None
+
+    def onCreate(self):
+        screen = lv.obj()
+        self.label = lv.label(screen)
+        self.label.set_text('Hello Images!')
+        self.label.align(lv.ALIGN.TOP_MID,0,0)
+        self.image = lv.image(screen)
+        self.image.set_size(128, 128)
+        self.image.align(lv.ALIGN.BOTTOM_MID,0,0)
+        self.setContentView(screen)
+
+    def onResume(self, screen):
+        self.images.clear()
+        for item in os.listdir(self.imagedir):
+            print(item)
+            if item.endswith(".jpg") or item.endswith(".jpeg") or item.endswith(".png"):
+            #if item.endswith(".png"):
+                fullname = f"{self.imagedir}/{item}"
+                size = os.stat(fullname)[6]
+                print(f"size: {size}")
+                #if size > 1024*1024:
+                if size > 60000:
+                    print(f"Skipping file of size {size}")
+                    continue
+                self.images.append(fullname)
+        self.image_timer = lv.timer_create(self.show_next_image, 1000, None)
+
+    def onStop(self, screen):
+        if self.image_timer:
+            print("ImageView: deleting image_timer")
+            self.image_timer.delete()
+
+    def show_next_image(self, event):
+        print("showing next image...")
+        if len(self.images) < 1:
+            return
+        if self.image_nr  >= len(self.images):
+            self.image_nr = 0
+        name = self.images[self.image_nr]
+        print(f"show_next_image showing {name}")
+        self.show_image(name)
+        self.image_nr = self.image_nr + 1
+
+    def show_image(self, name):
+        try:
+            self.label.set_text(name)
+            f = open(name, 'rb')
+            image_data = f.read()
+            print(f"loaded {len(image_data)} bytes")
+            f.close()
+            self.image_dsc = lv.image_dsc_t({
+                'data_size': len(image_data),
+                'data': image_data 
+            })
+            #image.set_size(128, 128)
+            #image.set_scale(512)
+            self.image.set_src(self.image_dsc)
+            print(f"done with show_image({name})")
+        except Exception as e:
+            print("show_image got exception: {e}")