A datastore of images for display by a screen. Provides an ordered list of dirs & images from a single directory, as required by a Thumbnail view. Permits marking of items and populates dir thumbnails from their subtree. More...

#include <galleryviews.h>

Inheritance diagram for DirectoryView:

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Collaboration diagram for DirectoryView:

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Public Member Functions
	DirectoryView (SlideOrderType order)
	Constructs a view of images & directories that can be marked. More...

ImagePtrK	GetParent () const

QString	GetPosition () const
	Get positional status. More...

bool	LoadFromDb (int parentId) override
	Populate view from database as images/subdirs of a directory. View is ordered: Parent dir, sub-dirs, images. Dir thumbnails are derived from their subtree. More...

void	Clear (bool resetParent=true)
	Resets view. More...

MenuSubjects	GetMenuSubjects ()
	Determine current selection, markings & various info to support menu display. More...

QStringList	RemoveImage (int id, bool deleted=false)
	Clear file/dir and all its ancestors from UI cache so that ancestor thumbnails are recalculated. Optionally deletes file/dir from view. More...

void	ClearCache ()
	Clears UI cache. More...

void	MarkAll ()
	Mark all images/dirs. More...

void	Mark (int id, bool mark)
	Mark/unmark an image/dir. More...

void	InvertMarked ()
	Mark all unmarked items, unmark all marked items. More...

void	ClearMarked ()
	Unmark all items. More...

bool	IsMarked (int id) const

Public Member Functions inherited from FlatView
	FlatView (SlideOrderType order)

virtual	~FlatView ()

int	GetParentId () const

ImageListK	GetAllNodes () const
	Get all images/dirs in view. More...

ImagePtrK	GetSelected () const
	Get current selection. More...

ImagePtrK	HasNext (int inc) const
	Peeks at next image in view but does not advance iterator. More...

ImagePtrK	HasPrev (int inc) const
	Peeks at previous image in view but does not decrement iterator. More...

ImagePtrK	Next (int inc)
	Advance iterator and return next image, wrapping if necessary. Regenerates unordered views on wrap. More...

ImagePtrK	Prev (int inc)
	Decrements iterator and returns previous image. Wraps at start. More...

QString	GetPosition () const
	Get positional status. More...

bool	Select (int id, int fallback=0)
	Selects first occurrence of an image. More...

QStringList	ClearImage (int id, bool remove=false)
	Clear file from UI cache and optionally from view. More...

void	ClearCache ()
	Clears UI cache. More...

bool	Update (int id)
	Updates view with images that have been updated. More...

void	Rotate (int id)
	Rotate view so that starting image is at front. More...

void	Clear (bool resetParent=true)
	Reset view. More...

QString	GetCachedThumbUrl (int id) const

Protected Member Functions
void	SetDirectory (int newParent)
	Manage markings on tree navigation. More...

void	LoadDirThumbs (ImageItem &parent, int thumbsNeeded, int level=0)
	Populate thumbs for a dir. More...

void	PopulateThumbs (ImageItem &parent, int thumbsNeeded, const ImageList &files, const ImageList &dirs, int level=0)
	Populate directory stats & thumbnails recursively from database as follows: Use user cover, if assigned. Otherwise derive 4 thumbnails from: first 4 images, then 1st thumbnail from first 4 sub-dirs, then 2nd thumbnail from sub-dirs etc. More...

ImageIdList	GetChildren () const

bool	PopulateFromCache (ImageItem &dir, int required)
	Retrieve cached dir, if available. More...

void	Cache (ImageItemK &dir, int thumbCount)
	Cache displayed dir. More...

Protected Member Functions inherited from FlatView
void	Populate (ImageList &files)
	Fills view with Db images, re-ordering them as required. More...

void	Cache (int id, int parent, const QString &url, const QString &thumb)
	Cache image properties to optimize UI. More...

Protected Attributes
MarkedFiles	m_marked
	Marked items in current dir/view. More...

MarkedFiles	m_prevMarked
	Marked items in previous dir. More...

QHash< int, DirCacheEntry >	m_dirCache
	Caches displayed image dirs. More...

Protected Attributes inherited from FlatView
int	m_parentId {-1}

SlideOrderType	m_order {kOrdered}

ImageManagerFe &	m_mgr

QHash< int, ImagePtrK >	m_images
	Image objects currently displayed. More...

ImageIdList	m_sequence
	The sequence in which to display images. More...

int	m_active {0}
	Sequence index of current selected image. More...

QHash< int, FileCacheEntry >	m_fileCache
	Caches displayed image files. More...

Additional Inherited Members
Static Protected Member Functions inherited from FlatView
static WeightList	CalculateSeasonalWeights (ImageList &files)
	This method calculates a weight for the item based on how closely it was taken to the current time of year. This means that New Year's pictures will be displayed very frequently on every New Year's, and that anniversary pictures will be favored again every anniversary. The weights are chosen using a beta distribution with a tunable shape parameter. More...

Detailed Description

A datastore of images for display by a screen. Provides an ordered list of dirs & images from a single directory, as required by a Thumbnail view. Permits marking of items and populates dir thumbnails from their subtree.

Definition at line 170 of file galleryviews.h.

Constructor & Destructor Documentation

◆ DirectoryView()

DirectoryView::DirectoryView ( SlideOrderType order )

explicit

Constructs a view of images & directories that can be marked.

Parameters

order Ordering to use for view

Definition at line 472 of file galleryviews.cpp.

Member Function Documentation

◆ GetParent()

ImagePtrK DirectoryView::GetParent ( ) const

inline

Definition at line 175 of file galleryviews.h.

Referenced by GalleryThumbView::DirSelectUp(), GalleryThumbView::ItemClicked(), GalleryThumbView::keyPressEvent(), GalleryThumbView::MenuAction(), and GalleryThumbView::MenuMarked().

◆ GetPosition()

QString DirectoryView::GetPosition ( ) const

Get positional status.

Returns: QString "m/n" where m is selected index (0 for parent), n is total images

Definition at line 484 of file galleryviews.cpp.

Referenced by GalleryThumbView::SetUiSelection().

◆ LoadFromDb()

bool DirectoryView::LoadFromDb ( int parentId )

overridevirtual

Populate view from database as images/subdirs of a directory. View is ordered: Parent dir, sub-dirs, images. Dir thumbnails are derived from their subtree.

Parameters

parentId The dir id, if positive. Otherwise the view is refreshed using the existing parent dir

Returns: bool True if resulting view is not empty

Reimplemented from FlatView.

Definition at line 498 of file galleryviews.cpp.

Referenced by GalleryThumbView::LoadData().

◆ Clear()

void DirectoryView::Clear ( bool resetParent = true )

Resets view.

Parameters

resetParent parent id is only reset to root when this is set

Definition at line 712 of file galleryviews.cpp.

Referenced by GalleryThumbView::Close(), and GalleryThumbView::customEvent().

◆ GetMenuSubjects()

MenuSubjects DirectoryView::GetMenuSubjects ( )

Determine current selection, markings & various info to support menu display.

Returns: MenuSubjects Current state

Definition at line 807 of file galleryviews.cpp.

Referenced by GalleryThumbView::MenuMain().

◆ RemoveImage()

QStringList DirectoryView::RemoveImage	(	int	id,
		bool	deleted = `false`
	)

Clear file/dir and all its ancestors from UI cache so that ancestor thumbnails are recalculated. Optionally deletes file/dir from view.

Parameters

id	Image id
deleted	If true, file is also deleted from view

Returns: QStringList Url of image & thumbnail to remove from image cache

Definition at line 902 of file galleryviews.cpp.

Referenced by GalleryThumbView::RemoveImages().

◆ ClearCache()

void DirectoryView::ClearCache ( )

Clears UI cache.

Definition at line 887 of file galleryviews.cpp.

Referenced by Clear(), GalleryThumbView::DoShowHidden(), GalleryThumbView::DoShowType(), and GalleryThumbView::ShowSettings().

◆ MarkAll()

void DirectoryView::MarkAll ( )

Mark all images/dirs.

Definition at line 723 of file galleryviews.cpp.

Referenced by GalleryThumbView::DoMarkAll().

◆ Mark()

void DirectoryView::Mark	(	int	id,
		bool	mark
	)

Mark/unmark an image/dir.

Parameters

id	The image/dir
mark	If true, mark item. Otherwise unmark

Definition at line 736 of file galleryviews.cpp.

Referenced by GalleryThumbView::DoHideItem(), GalleryThumbView::DoHideMarked(), GalleryThumbView::DoMarkItem(), and GalleryThumbView::Move().

◆ InvertMarked()

void DirectoryView::InvertMarked ( )

Mark all unmarked items, unmark all marked items.

Definition at line 755 of file galleryviews.cpp.

Referenced by GalleryThumbView::MarkInvertAll().

◆ ClearMarked()

void DirectoryView::ClearMarked ( )

Unmark all items.

Definition at line 766 of file galleryviews.cpp.

Referenced by Clear(), and GalleryThumbView::DoMarkAll().

◆ IsMarked()

bool DirectoryView::IsMarked ( int id ) const

inline

Definition at line 188 of file galleryviews.h.

Referenced by GalleryThumbView::keyPressEvent(), and GalleryThumbView::UpdateImageItem().

◆ SetDirectory()

void DirectoryView::SetDirectory ( int newParent )

protected

Manage markings on tree navigation.

Parameters

newParent Id of new parent dir

Definition at line 777 of file galleryviews.cpp.

Referenced by LoadFromDb().

◆ LoadDirThumbs()

void DirectoryView::LoadDirThumbs	(	ImageItem &	parent,
		int	thumbsNeeded,
		int	level = `0`
	)

protected

Populate thumbs for a dir.

Parameters

parent	Parent dir
thumbsNeeded	Number of thumbnails needed
level	Recursion depth

Definition at line 570 of file galleryviews.cpp.

Referenced by LoadFromDb(), and PopulateThumbs().

◆ PopulateThumbs()

void DirectoryView::PopulateThumbs	(	ImageItem &	parent,
		int	thumbsNeeded,
		const ImageList &	files,
		const ImageList &	dirs,
		int	level = `0`
	)

protected

Populate directory stats & thumbnails recursively from database as follows: Use user cover, if assigned. Otherwise derive 4 thumbnails from: first 4 images, then 1st thumbnail from first 4 sub-dirs, then 2nd thumbnail from sub-dirs etc.

Parameters

parent	The parent dir
thumbsNeeded	Number of thumbnails required
files	A list of files to process
dirs	A list of directories to process
level	Recursion level (to detect recursion deadlocks)

Definition at line 595 of file galleryviews.cpp.

Referenced by LoadDirThumbs(), and LoadFromDb().

◆ GetChildren()

ImageIdList DirectoryView::GetChildren ( ) const

inlineprotected

Definition at line 197 of file galleryviews.h.

Referenced by InvertMarked(), and MarkAll().

◆ PopulateFromCache()

bool DirectoryView::PopulateFromCache	(	ImageItem &	dir,
		int	required
	)

protected

Retrieve cached dir, if available.

Parameters

dir	Dir image
required	Number of thumbnails required

Returns: bool True if a cache entry exists

Definition at line 840 of file galleryviews.cpp.

Referenced by LoadDirThumbs(), and LoadFromDb().

◆ Cache()

void DirectoryView::Cache	(	ImageItemK &	dir,
		int	thumbCount
	)

protected

Cache displayed dir.

Parameters

dir	Dir image
thumbCount	Number of populated thumbnails

Definition at line 860 of file galleryviews.cpp.

Referenced by PopulateThumbs().

Member Data Documentation

◆ m_marked

MarkedFiles DirectoryView::m_marked

protected

Marked items in current dir/view.

Definition at line 201 of file galleryviews.h.

Referenced by ClearMarked(), DirectoryView(), GetMenuSubjects(), InvertMarked(), IsMarked(), LoadFromDb(), Mark(), MarkAll(), RemoveImage(), and SetDirectory().

◆ m_prevMarked

MarkedFiles DirectoryView::m_prevMarked

protected

Marked items in previous dir.

Definition at line 202 of file galleryviews.h.

Referenced by ClearMarked(), DirectoryView(), GetMenuSubjects(), InvertMarked(), IsMarked(), Mark(), MarkAll(), RemoveImage(), and SetDirectory().

◆ m_dirCache

QHash<int, DirCacheEntry> DirectoryView::m_dirCache

protected

Caches displayed image dirs.

Definition at line 205 of file galleryviews.h.

Referenced by Cache(), ClearCache(), PopulateFromCache(), and RemoveImage().

The documentation for this class was generated from the following files:

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DirectoryView()

Member Function Documentation

◆ GetParent()

◆ GetPosition()

◆ LoadFromDb()

◆ Clear()

◆ GetMenuSubjects()

◆ RemoveImage()

◆ ClearCache()

◆ MarkAll()

◆ Mark()

◆ InvertMarked()

◆ ClearMarked()

◆ IsMarked()

◆ SetDirectory()

◆ LoadDirThumbs()

◆ PopulateThumbs()

◆ GetChildren()

◆ PopulateFromCache()

◆ Cache()

Member Data Documentation

◆ m_marked

◆ m_prevMarked

◆ m_dirCache