intentapi

Other Android apps can use parts of "a Photo Manager" throught the "Intent api".

open/view/send/sendto an image (jpg/png/gif) from a android filemanager will open the Image-View
- if mimeType="image/*" and uri starts with "file:/"
view/send/sendto an image (jpg/png/gif) from android gallery will open the Image-View
- if mimeType="image/*" and uri starts with "content:/external/images/media/"
view/send/sendto a geo-position in a Geografic-Map
- if uri starts with "geo:"
pick a geo-position from a Geografic-Map or from "a photo that contain geo information"
- action="PICK"
- if input-intent-uri starts with "geo:"
- returns null (cancel) or intent with geo-uri for the selected posion in the callers onActivityResult()
pick an image from Gallery-View
- action="PICK" or "GET_CONTENT"
- if mimeType="image/*"
- returns null (cancel) or intent with content-uri for the selected photo in the callers onActivityResult()
Edit Exif of a jpg
- action=EDIT
- mime="image/*"
extra[android.intent.extra.TITLE string]
data=file:{/path/path/.../file.ext} or extra[android.intent.extra.STREAM]=file:{/path/path/.../file.ext}
- example file:/storage/sdcard0/copy/hello.jpg
data=content:/external/images/media/{id} or extra[android.intent.extra.STREAM]=content:/external/images/media/{id}
- opens image belonging to {id} in Exif-Edit
- example content:/external/images/media/52173
  - opens image with id=52173

Uri formats

"a Photo Manager" supports these uri formats for data={xxx} or extra[android.intent.extra.STREAM]={xxx}

file:{/path/path/.../file.ext}
- opens in Image-View if mime="image/*" for action=VIEW/SEND/SENDTO
- examle file:/storage/sdcard0/copy/hello.jpg
file:{xxx}
- opens Gallery-View with pathfilter={xxx} if mime="image/*" for action=VIEW/SEND/SENDTO if xxx is not an image file
- example file:kreta
  - opens Gallery-View showing all files that contain "kreta" in its full path
content:/external/images/media/{id}
- opens image belonging to {id} in Image-View for action=VIEW/SEND/SENDTO/SEND_MULTIBLE
- example content:/external/images/media/52173
  - opens image #52173. If there is no extra[de.k3b.extra.FILTER] swiping left/right will browse to images in the same (sub-)folder as #52173
geo:{latitude},{longitude}?z={zoomlevel}
- opens Geografic-Map at {latitude} {longitude} {zoomlevel}
- example geo:53.036258,8.721771?z=11
- example geo:53,8.7
- zoomlevel 1..14 is optional. z=3 continent; z=11 streetlevel

Intent-Extra parameter

"a Photo Manager" supports these optional intent parameters

android.intent.extra.TITLE string

purpose define the title of the gui

de.k3b.extra.FILTER string

purpose define which items should be visible
- see Gallery Navigation for details.
the content is the same as in Filter-View
format {latitude min},{longitude min};{latitude max},{longitude max};{date min},{date max};{path}
format noGeoInfo;;{date min},{date max};{path}
example 1.23,2.34;3.45,4.56;2001-02-03,2005-12-31;/some/path/
example noGeoInfo;;2001-02-03,2005-12-31;/some/path/
- noGeoInfo is used to show only those photos that have no geo infos.
technically this filter defines the sql-where part without ordering or colums formulas.

de.k3b.extra.SQL string

purpose define current sql that defines which photos are affected.
- used when opening a sub-gallery view
- used when opening a Geografic-Map
- used when navigating to Image-View so that the image view show the same images and in the same order as the originating Gallery-View
format: the same as Internal sql format of .query files generated in the Virtual Album/bookmark menues of Filter-View.
technically this defines a complete sql including sql-where, ordering and colums formulas.

OFFSET

de.k3b.extra.OFFSET offset in sql that should be initally visible in Image-View.
- Example: OFFSET=5 in the gallery view will open the 5th image in the sql-query

de.k3b.extra.SELECTED_ITEMS string

purpose define which items are currently selcted if gallery is in multi selection mode
used in Geografic-Map to define the "blue selection marker"
format {id},{id},{id},{id},{id},...

de.k3b.extra.SELECTED_ITEMS_PATH string

purpose define which items are currently selcted if gallery is in multi selection mode
SELECTED_ITEMS_PATH format {/path/to/file.jpg},{/path/to/file.jpg},...
if both SELECTED_ITEMS and SELECTED_ITEMS_PATH are used then they must have the same lenght and same order. id[0]=path[0], id[1]=path[1], ...

internal sql format of .query files

purpose defintion of Virtual Album/bookmark files in folder /storage/sdcard0/databases/sql/*.query
- Note: You can change this folder through Report Folder in the Settings View.
created in Filter-View via menu "Save Virtual Album/bookmark as ..."
loaded into Filter-View via menu "Load Virtual Album/bookmark from ..."
loaded into Gallery-View via menu "Load Virtual Album/bookmark from ..."

".query files" can be used to create summery queries with count, group by, having....

Note: The same format is also used in the intent api for extra parameter de.k3b.extra.SQL

Format:

Lines, seperated by newline character. Each line is either
- a comment starting with '#', '//' or '--'
- a keyword: one of FROM, QUERY-TYPE-ID, SELECT, WHERE, WHERE-PARAMETERS, GROUP-BY, HAVING, HAVING-PARAMETERS, ORDER-BY
  - the keyword is similar to sql
    - select [SELECT] from [FROM] where [WHERE+WHERE-PARAMETERS] group by [GROUP-BY] having [HAVING+HAVING-PARAMETERS] order by [ORDER-BY]
- a value, that belongs to the keyword.

Examples

simple filter "Path"

Purpose: show only images that contain "kreta" in the full file path

	WHERE 
		_data like ?
		WHERE-PARAMETERS 
			%kreta%

This is the same as setting "Path" in Filter-View

The above query is the same as

FROM 
	# where data comes from: content://media/external/images/media = media gallery images; content://media/external/file any type of file (audo, image, video, ...)
	content://media/external/file
	QUERY-TYPE-ID
		# 11 gallery; # 13 album. See FotoSql.java QUERY_TYPE_xxx 
		11
SELECT 
	# NOTE: there are no commas between the colum-definitions.
	# _id ist the image id
	_id
	
	# disp_txt is the photo title
	_data AS disp_txt
	
	# count is the number of photos represented by one item. Displayed as (xxx) in the title if > 1
	0 AS count
	
	# longitude is an indicator that item has geo data. If not null displayed as "#" to indicate geo data. 
	longitude
	
WHERE 
	_data like ?
	WHERE-PARAMETERS 
		%kreta%
	# meaning "where _data like '%kreta%'

complex filter

Purpose: show only images that

has geolocation (34.691944,23.480529) .. (36.071302,24.732971)
photo was taken between 2013-01-01 and 2014-01-01
contain "kreta" in the full file path

WHERE 
	# NOTE: there are no "AND-a between the colum-definitions.
	latitude >= ?
	latitude < ?
	longitude >= ?
	longitude < ?
	datetaken >= ?
	datetaken < ?
	_data like ?
	WHERE-PARAMETERS 
		34.691944
		36.071302
		23.480529
		24.732971
		2013-01-01
		2014-01-01
		%kreta%

This is the same as setting all fields in Filter-View

Note: column "datetaken" value can be millisecs since 1970 or iso-date in format yyyy-mm-dd

Note: the simple sql parser can translate this to a filter only if WHERE parameter-elements are exactly written like the example above. If you put additional blanks or change the casing the translation from query to filter does not work.

Example

"latitude >= ?" will be translated to filter item lat-min
"latitude >= ?" will not be translated to any filter item because there is an additional blank
"Latitude >= ?" will not be translated to any filter item because there is a capital "L" instead of "l"

non standard filter

Purpose: show only panorama pictures

Where 
  ((height/width >= 2) or (width/height >= 2))

This cannot be done in the Filter-View

advanced complex grouping-drill-down-query

a query can be as complex as this:

FROM 
	content://media/external/file
	QUERY-TYPE-ID
		13
SELECT 
	max(_id) AS _id
	
	# folder name calculated from full-path "_data" and filename "_display_Name" to be displayed
	Substr(_data,1, length(_data) - length(_display_Name)) AS disp_txt
	
	# if folder contain more than 1 item the count will be appended as (...) to the name
	count(*) AS count
	
	# folder name calculated from full-path "_data" and filename "_display_Name" to be displayed	
	Substr(_data,1, length(_data) - length(_display_Name)) AS _display_Name
	
	# not null if at least one photo in folder has geo info
	max(longitude) AS longitude
	
	# "where_param" is used to drill down i.e. clicking on a folder in the gallery view will open a child  gallery view with the folder contant.
	'Substr(_data,1, length(_data) - length(_display_Name)) = ''' || Substr(_data,1, length(_data) -  length(_display_Name))  || '''' AS where_param
GROUP-BY 
	# group by folder name
	Substr(_data,1, length(_data) - length(_display_Name))
ORDER-BY 
    Substr(_data,1, length(_data) - length(_display_Name))

note: you have to load this from the Gallery-View to make it work.

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