From 9270c9ae9aa2f18d797cf6e897033336febca6e8 Mon Sep 17 00:00:00 2001 From: Thomas Farstrike Date: Mon, 1 Dec 2025 11:51:54 +0100 Subject: [PATCH] ImageView app: add delete button --- .../assets/imageview.py | 43 ++++++++++++++++--- 1 file changed, 37 insertions(+), 6 deletions(-) diff --git a/internal_filesystem/apps/com.micropythonos.imageview/assets/imageview.py b/internal_filesystem/apps/com.micropythonos.imageview/assets/imageview.py index f7173083..4433b503 100644 --- a/internal_filesystem/apps/com.micropythonos.imageview/assets/imageview.py +++ b/internal_filesystem/apps/com.micropythonos.imageview/assets/imageview.py @@ -34,6 +34,7 @@ class ImageView(Activity): self.label = lv.label(screen) self.label.set_text(f"Loading images from\n{self.imagedir}") self.label.align(lv.ALIGN.TOP_MID,0,0) + self.label.set_width(lv.pct(80)) self.prev_button = lv.button(screen) self.prev_button.align(lv.ALIGN.BOTTOM_LEFT,0,0) self.prev_button.add_event_cb(lambda e: self.show_prev_image_if_fullscreen(),lv.EVENT.FOCUSED,None) @@ -50,6 +51,12 @@ class ImageView(Activity): #self.play_button.add_event_cb(lambda e: self.play(),lv.EVENT.CLICKED,None) #play_label = lv.label(self.play_button) #play_label.set_text(lv.SYMBOL.PLAY) + self.delete_button = lv.button(screen) + self.delete_button.align(lv.ALIGN.BOTTOM_MID,0,0) + self.delete_button.add_event_cb(lambda e: self.delete_image(),lv.EVENT.CLICKED,None) + delete_label = lv.label(self.delete_button) + delete_label.set_text(lv.SYMBOL.TRASH) + delete_label.set_style_text_font(lv.font_montserrat_16, 0) self.next_button = lv.button(screen) self.next_button.align(lv.ALIGN.BOTTOM_RIGHT,0,0) #self.next_button.add_event_cb(self.print_events, lv.EVENT.ALL, None) @@ -79,10 +86,12 @@ class ImageView(Activity): self.images.append(fullname) self.images.sort() - # Begin with one image: - self.show_next_image() - self.stop_fullscreen() - #self.image_timer = lv.timer_create(self.show_next_image, 1000, None) + if len(self.images) == 0: + self.no_image_mode() + else: + # Begin with one image: + self.show_next_image() + self.stop_fullscreen() except Exception as e: print(f"ImageView encountered exception for {self.imagedir}: {e}") @@ -93,9 +102,16 @@ class ImageView(Activity): print("ImageView: deleting image_timer") self.image_timer.delete() + def no_image_mode(self): + self.label.set_text(f"No images found in {self.imagedir}...") + mpos.ui.anim.smooth_hide(self.prev_button) + mpos.ui.anim.smooth_hide(self.delete_button) + mpos.ui.anim.smooth_hide(self.next_button) + def show_prev_image(self, event=None): print("showing previous image...") if len(self.images) < 1: + self.no_image_mode() return if self.image_nr is None or self.image_nr == 0: self.image_nr = len(self.images) - 1 @@ -119,6 +135,7 @@ class ImageView(Activity): print("stopping fullscreen") mpos.ui.anim.smooth_show(self.label) mpos.ui.anim.smooth_show(self.prev_button) + mpos.ui.anim.smooth_show(self.delete_button) #mpos.ui.anim.smooth_show(self.play_button) self.play_button.add_flag(lv.obj.FLAG.HIDDEN) # make it not accepting focus mpos.ui.anim.smooth_show(self.next_button) @@ -127,6 +144,7 @@ class ImageView(Activity): print("starting fullscreen") mpos.ui.anim.smooth_hide(self.label) mpos.ui.anim.smooth_hide(self.prev_button, hide=False) + mpos.ui.anim.smooth_hide(self.delete_button, hide=False) #mpos.ui.anim.smooth_hide(self.play_button, hide=False) self.play_button.remove_flag(lv.obj.FLAG.HIDDEN) # make it accepting focus mpos.ui.anim.smooth_hide(self.next_button, hide=False) @@ -170,6 +188,7 @@ class ImageView(Activity): def show_next_image(self, event=None): print("showing next image...") if len(self.images) < 1: + self.no_image_mode() return if self.image_nr is None or self.image_nr >= len(self.images) - 1: self.image_nr = 0 @@ -179,6 +198,16 @@ class ImageView(Activity): print(f"show_next_image showing {name}") self.show_image(name) + def delete_image(self, event=None): + filename = self.images[self.image_nr] + try: + os.remove(filename) + self.clear_image() + self.label.set_text(f"Deleted\n{filename}") + del self.images[self.image_nr] + except Exception as e: + print(f"Error deleting {filename}: {e}") + def extract_dimensions_and_format(self, filename): # Split the filename by '_' parts = filename.split('_') @@ -191,6 +220,7 @@ class ImageView(Activity): return width, height, color_format.upper() def show_image(self, name): + self.current_image = name try: self.label.set_text(name) self.clear_image() @@ -220,7 +250,7 @@ class ImageView(Activity): if color_format == "GRAY": cf = lv.COLOR_FORMAT.L8 stride = width - else: + elif color_format != "RGB565": print(f"WARNING: unknown color format {color_format}, assuming RGB565...") self.current_image_dsc = lv.image_dsc_t({ "header": { @@ -242,7 +272,7 @@ class ImageView(Activity): if self.fullscreen: pct = 100 else: - pct = 90 + pct = 70 lvgl_w = mpos.ui.pct_of_display_width(pct) lvgl_h = mpos.ui.pct_of_display_height(pct) print(f"scaling to size: {lvgl_w}x{lvgl_h}") @@ -265,6 +295,7 @@ class ImageView(Activity): def clear_image(self): """Clear current image or GIF source to free memory.""" + self.image.set_src(None) #if self.current_image_dsc: # self.current_image_dsc = None # Release reference to descriptor #self.image.set_src(None) # Clear image source