# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1584882659 -3600
# Node ID 20a807443c3f1c6f4a3b1f7fbe3b5938da515308
# Parent  f3296a7f35f300b7af45827ef287e467f9e03cd4
chat: resize attachments (images only for now):

if attachments to send contain oversized image, a checkbox will be shown (activated by
default) to reduce automatically the size.

The background color now cover the whole attachments to send widget.

If not already specified, media type is guessed from filename when adding an attachment.

diff -r f3296a7f35f3 -r 20a807443c3f cagou/plugins/plugin_wid_chat.kv
--- a/cagou/plugins/plugin_wid_chat.kv	Wed Mar 18 20:26:21 2020 +0100
+++ b/cagou/plugins/plugin_wid_chat.kv	Sun Mar 22 14:10:59 2020 +0100
@@ -172,11 +172,18 @@
 
 <AttachmentsToSend>:
     attachments: attachments_layout.attachments
+    reduce_checkbox: reduce_checkbox
     orientation: "vertical"
     size_hint: 1, None
     height: self.minimum_height if self.attachments.children else 0
     opacity: 1 if self.attachments.children else 0
     padding: [app.MARGIN_LEFT, dp(5), app.MARGIN_RIGHT, dp(5)]
+    canvas.before:
+        Color:
+            rgba: app.c_prim
+        Rectangle:
+            pos: self.pos
+            size: self.size
     Label:
         size_hint: 1, None
         size: self.texture_size
@@ -184,13 +191,26 @@
         bold: True
     AttachmentsLayout:
         id: attachments_layout
-        canvas.before:
-            Color:
-                rgba: app.c_prim
-            Rectangle:
-                pos: self.pos
-                size: self.size
-
+    BoxLayout:
+        id: resize_box
+        size_hint: 1, None
+        opacity: 1 if root.show_resize else 0
+        height: dp(25) if root.show_resize else 0
+        Widget:
+        CheckBox:
+            id: reduce_checkbox
+            size_hint: None, 1
+            width: dp(20)
+            active: True
+        Label:
+            size_hint: None, 1
+            text: _("reduce images size")
+            text_size: None, None
+            size: self.texture_size
+            valign: "middle"
+            padding_x: dp(10)
+            font_size: sp(15)
+        Widget:
 
 <Chat>:
     attachments_to_send: attachments_to_send
diff -r f3296a7f35f3 -r 20a807443c3f cagou/plugins/plugin_wid_chat.py
--- a/cagou/plugins/plugin_wid_chat.py	Wed Mar 18 20:26:21 2020 +0100
+++ b/cagou/plugins/plugin_wid_chat.py	Sun Mar 22 14:10:59 2020 +0100
@@ -21,6 +21,7 @@
 from pathlib import Path
 import sys
 import uuid
+import mimetypes
 from urllib.parse import urlparse
 from kivy.uix.boxlayout import BoxLayout
 from kivy.uix.gridlayout import GridLayout
@@ -95,6 +96,15 @@
 class AttachmentsToSend(BoxLayout):
     """Layout for attachments to be sent with current message"""
     attachments = properties.ObjectProperty()
+    reduce_checkbox = properties.ObjectProperty()
+    show_resize = properties.BooleanProperty(False)
+
+    def on_kv_post(self, __):
+        self.attachments.bind(children=self.onAttachment)
+
+    def onAttachment(self, __, attachments):
+        if len(attachments) == 0:
+            self.show_resize = False
 
 
 class BaseAttachmentItem(BoxLayout):
@@ -974,6 +984,13 @@
                 "path": str(item.data["path"]),
                 "progress_id": progress_id,
             }
+            if 'media_type' in item.data:
+                attachment[C.MESS_KEY_ATTACHMENTS_MEDIA_TYPE] = item.data['media_type']
+
+            if ((self.attachments_to_send.reduce_checkbox.active
+                 and attachment.get('media_type', '').split('/')[0] == 'image')):
+                attachment[C.MESS_KEY_ATTACHMENTS_RESIZE] = True
+
             attachments.append(attachment)
 
             Clock.schedule_once(
@@ -999,12 +1016,41 @@
             )
         input_widget.text = ''
 
-    def addAttachment(self, file_path):
+    def _imageCheckCb(self, report_raw):
+        report = data_format.deserialise(report_raw)
+        if report['too_large']:
+            self.attachments_to_send.show_resize=True
+            self.attachments_to_send.reduce_checkbox.active=True
+
+    def addAttachment(self, file_path, media_type=None):
         file_path = Path(file_path)
+        if media_type is None:
+            media_type = mimetypes.guess_type(file_path, strict=False)[0]
+        if not self.attachments_to_send.show_resize and media_type is not None:
+            # we check if the attachment is an image and if it's too large.
+            # If too large, the reduce size check box will be displayed, and checked by
+            # default.
+            main_type = media_type.split('/')[0]
+            if main_type == "image":
+                G.host.bridge.imageCheck(
+                    str(file_path),
+                    callback=self._imageCheckCb,
+                    errback=partial(
+                        G.host.errback,
+                        title=_("Can't check image size"),
+                        message=_("Can't check image at {path}: {{msg}}").format(
+                            path=file_path),
+                    )
+                )
+
         data = {
             "path": file_path,
             "name": file_path.name,
         }
+
+        if media_type is not None:
+            data['media_type'] = media_type
+
         self.attachments_to_send.attachments.add_widget(
             AttachmentToSendItem(data=data)
         )