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143 lines
3.7 KiB
143 lines
3.7 KiB
# Folders
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Here is a description of each folder:
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* app/
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Code specific to the standalone application (== not the KParts)
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* desktopfiles/
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Desktop files, to start the standalone application, from the menu and from
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within Konqueror.
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* doc/
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Man page. This is not the HTML doc. The HTML doc is in
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extragear/graphics/doc/gwenview.
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* gvcore/
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Code shared between the application and the KParts.
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* gvdirpart/
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The Gwenview KPart used to browse folders.
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* gvimagepart/
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The Gwenview KPart to display images.
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* imageutils/
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Various image code, like rotation (lossless for JPEG, classic for others),
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scaling...
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* pics/
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Icons.
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* spec/
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.spec files to build RPM (probably outdated)
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* tools/
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Desktop files describing external tools.
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* tsthread/
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A thread library written by Lubos Lunak.
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* updates/
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Update scripts to migrate configuration files within versions.
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# Code
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In this part we describe the main classes, not getting too deeply into details
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so that this document doesn't get obsoleted too fast :-)
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## gvcore
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### Document classes
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document.h
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document*impl.h
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This is the heart of Gwenview. The Document class represents a media file. It
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uses the "State" design pattern to adapt its behavior depending on its state.
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The various states are implemented in the Document*Impl classes.
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It knows how to load, save, edit a comment, rotate and mirror a document.
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### Image loader and cache
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imageloader.h
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cache.h
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Image loading is done by the ImageLoader classes, which work together with the
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cache to avoid loading an image multiple times.
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A loader may be shared, for example if an image is selected and a thumbnail of
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it is being generated, the same loader will be used by both.
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### File views
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fileviewcontroller.h
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filedetailview*.h
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filethumbnailview*.h
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fileviewbase.h
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The main class is FileViewController, which contains the KDirLister responsible
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for listing folder content. It also contains a QWidgetStack which contains
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both the FileDetailView and the FileThumbnailView.
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FileViewBase is an abstract class, which inherits from KFileView and adds the
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concept of a "shown item": the item currently viewed in the image view.
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### Image view
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imageview.h
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imageviewtools.h
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The ImageView class inherits from QScrollView to show the current image. It
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implements zooming and panning.
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The ImageViewTools implements the different behaviors: for example when you
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use the mouse wheel you will scroll (or browse): This is implemented by the
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ImageView::ScrollTool class. If you press Ctrl and use the mouse wheel, you
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will zoom in the image: This is implemented by the ImageView::ZoomTool.
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### ImageViewController
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ImageViewController contains a stack which contains an ImageView and a KPart.
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The ImageView class is used to show raster images. For SVG images and movies,
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the ImageViewController loads the corresponding KPart.
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### File operations
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fileoperation.h
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fileopobject.h
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These classes implements file operations: from the user interface to the actual
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operation.
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## app
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### Main window
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mainwindow.h
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The MainWindow class is responsible for gluing together all components of the
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application. It is made of a QWidgetStack which contains two pages: one for
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the docked windows (==Browse mode) and another for the ImageViewController
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(==View and Fullscreen modes).
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There is only one instance of ImageViewController. It is 'reparent'ed when the
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QWidgetStack switch between modes.
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### Folder view
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dirviewcontroller.h
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vtabwidget.h
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bookmarkviewcontroller.h
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treeview.h
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These classes implement the folder view. The main class is DirViewController.
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It contains a VTabWidget, which contains an instance of the
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BoookmarkViewController and TreeView classes.
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## gvdirpart
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This KPart is made of a splitter, a FileThumbnailView and an ImageView.
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## gvimagepart
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This KPart is simply an ImageView.
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