|
| 1 | +import os |
| 2 | +import time |
| 3 | + |
| 4 | +from mpos.apps import Activity |
| 5 | + |
| 6 | +class ImageView(Activity): |
| 7 | + |
| 8 | + imagedir = "../icons/" |
| 9 | + images = [] |
| 10 | + image_nr = 0 |
| 11 | + image_timer = None |
| 12 | + image = None |
| 13 | + image_dsc = None |
| 14 | + |
| 15 | + def onCreate(self): |
| 16 | + screen = lv.obj() |
| 17 | + self.label = lv.label(screen) |
| 18 | + self.label.set_text('Hello Images!') |
| 19 | + self.label.align(lv.ALIGN.TOP_MID,0,0) |
| 20 | + self.image = lv.image(screen) |
| 21 | + self.image.set_size(128, 128) |
| 22 | + self.image.align(lv.ALIGN.BOTTOM_MID,0,0) |
| 23 | + self.setContentView(screen) |
| 24 | + |
| 25 | + def onResume(self, screen): |
| 26 | + self.images.clear() |
| 27 | + for item in os.listdir(self.imagedir): |
| 28 | + print(item) |
| 29 | + if item.endswith(".jpg") or item.endswith(".jpeg") or item.endswith(".png"): |
| 30 | + #if item.endswith(".png"): |
| 31 | + fullname = f"{self.imagedir}/{item}" |
| 32 | + size = os.stat(fullname)[6] |
| 33 | + print(f"size: {size}") |
| 34 | + #if size > 1024*1024: |
| 35 | + if size > 60000: |
| 36 | + print(f"Skipping file of size {size}") |
| 37 | + continue |
| 38 | + self.images.append(fullname) |
| 39 | + self.image_timer = lv.timer_create(self.show_next_image, 1000, None) |
| 40 | + |
| 41 | + def onStop(self, screen): |
| 42 | + if self.image_timer: |
| 43 | + print("ImageView: deleting image_timer") |
| 44 | + self.image_timer.delete() |
| 45 | + |
| 46 | + def show_next_image(self, event): |
| 47 | + print("showing next image...") |
| 48 | + if len(self.images) < 1: |
| 49 | + return |
| 50 | + if self.image_nr >= len(self.images): |
| 51 | + self.image_nr = 0 |
| 52 | + name = self.images[self.image_nr] |
| 53 | + print(f"show_next_image showing {name}") |
| 54 | + self.show_image(name) |
| 55 | + self.image_nr = self.image_nr + 1 |
| 56 | + |
| 57 | + def show_image(self, name): |
| 58 | + try: |
| 59 | + self.label.set_text(name) |
| 60 | + f = open(name, 'rb') |
| 61 | + image_data = f.read() |
| 62 | + print(f"loaded {len(image_data)} bytes") |
| 63 | + f.close() |
| 64 | + self.image_dsc = lv.image_dsc_t({ |
| 65 | + 'data_size': len(image_data), |
| 66 | + 'data': image_data |
| 67 | + }) |
| 68 | + #image.set_size(128, 128) |
| 69 | + #image.set_scale(512) |
| 70 | + self.image.set_src(self.image_dsc) |
| 71 | + print(f"done with show_image({name})") |
| 72 | + except Exception as e: |
| 73 | + print("show_image got exception: {e}") |
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