GTK TREEVIEW PDF

The GTK TreeView widget is used to display data in one of the most basic and intuitive ways possible: a list. Each row in the list can be separated into multiple. ew has a main CSS node with name treeview and style It has a subnode with name header, which is the parent for all the column header. public class Application: { public Application () { // Prepare Gtk. Window: = “My ew”; _position = Gtk. WindowPosition.

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Widget that displays any object that implements the Treevlew interface. Please refer to the tree widget conceptual overview for an overview of all the objects and data types related to the tree widget and how they work together. Coordinates relative to the entire scrollable area of GtkTreeView. These coordinates start at 0, 0 for row 0 of the tree.

Several functions are available for converting between the different coordinate systems. The most common translations are between widget and bin window coordinates and between bin window and tree coordinates. It has a subnode with name header, which is the parent for all the column header widgets’ CSS nodes. For rubberband selection, a subnode with name rubberband is used.

In right to left mode, this is reversed. This function should return TRUE if the spot is a valid drop spot. Please note that returning TRUE does not actually indicate that the column drop was made, but is meant only to indicate a possible drop spot to the user. The GtkTreeViewColumn being dragged. A GtkTreeViewColumn on one side of column. A GtkTreeViewColumn on the other treeviiew of column. TRUEif column can be dropped in this spot.

A function used trfeview checking whether a row in model matches a search key string entered by the user. Note the return value is reversed from what you would normally expect, though it has some similarity to strcmp returning 0 for equal strings. Creates a new GtkTreeView widget.

A newly created GtkTreeView widget. A return value of 0 means that this feature is disabled. The value should be specified in pixels, a value of 0 disables this feature and in this case only the default indentation will be used. This does not have any visible effects for lists. When disabled there will be no expanders visible in trees and there will be no way to expand and collapse ttreeview by default. Also note that hiding the expanders will disable the default indentation.

Creates a new GtkTreeView widget with the model initialized to model. Returns the model the GtkTreeView is based on. Returns NULL if the model is unset. Sets the model for a GtkTreeView.

GtkTreeView: GTK+ 3 Reference Manual

If model is NULLthen it will unset the old model. Gets the GtkAdjustment currently being used for the horizontal aspect. Sets the GtkAdjustment for the current horizontal aspect. Gets the GtkAdjustment currently being used for the vertical aspect. Sets the GtkAdjustment for the current vertical aspect. Some themes will draw tree rows in alternating colors even when rules are turned off, and users who treevlew that appearance all the time can choose those themes.

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You should call this function only as a semantic hint to the theme engine that your tree makes alternating colors useful from a functional standpoint since it has lots ttk columns, generally. Appends column to the list of columns. The GtkTreeViewColumn to add.

GTK+ By Example/Tree View/Tree Models – Wikibooks, open books for an open world

The GtkTreeViewColumn to remove. If position is -1, then the column is inserted at the end. The GtkTreeViewColumn to be inserted.

If position is -1, then the newly created column is inserted at the end. The column is initialized with the attributes given.

Convenience function that inserts a new column into the GtkTreeView with the given cell renderer and a GtkTreeCellDataFunc to set cell renderer attributes normally using data from the model. A list of GtkTreeViewColumn s. The GtkTreeViewColumn to be moved. Sets the column to draw the expander arrow at. If column is NULLthen the expander arrow is always at the first visible column.

GTK+ By Example/Tree View/Tree Models

If you do not want expander arrow to appear in your rreeview, set the expander column to a hidden column. Returns the column that is the current expander column.

This column has the expander arrow drawn next to it. Sets a user function for determining where a column may be dropped when dragged. This function is called on every column pair in turn at the beginning of a column drag to determine where a drop can take place.

The arguments passed to func are: User data to be passed to funcor NULL. If column is NULLthen no horizontal scrolling occurs. Likewise, if path is NULL no vertical scrolling occurs. At a minimum, one of column or path need to be non- NULL. Both are expected to be between 0. This means that the cell will be scrolled to the edge closest to its current position.

If the cell is currently visible on the screen, nothing is done. This function only works if the model is set, and path is a valid row on the model. The horizontal alignment of the column specified by column. Sets the current keyboard focus to be at pathand selects it. Please note that editing can only happen when the widget is realized.

If path is invalid for modelthe current cursor if any will be unset and the function will return without failing. Activates the cell determined by path and column. The GtkTreePath to be treevifw.

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The GtkTreeViewColumn to be activated. Expands the row at path. This will also expand all parent rows of path as necessary. A GtkTreePath to test expansion state. If reorderable is TRUEthen the user can reorder the model by dragging and dropping rows.

The reordering is implemented by setting up the tree view as a drag source and destination. Therefore, drag and drop can not be used in a reorderable view for any other purpose. This function does not give you any degree of control over the order — any reordering is allowed. If more control is needed, you should probably handle drag and drop manually.

Retrieves whether the user can reorder the tree via drag-and-drop. That is, x and y are relative to an events coordinates. It is primarily for things like popup menus. If column is non- NULLthen it will be filled with the column at that point. For converting widget coordinates eg. If so, the location can be considered as the background. You might wish to take special action on clicks on the background, such as clearing a current selection, having a custom context menu or starting rubber banding.

If path is NULLor points to a path not currently displayed, the y and height fields of the rectangle will be filled with 0. If column is Gtkkthe x and width fields will be filled with 0.

The sum of all cell rects does not cover the tereview tree; there are extra pixels in between treebiew, for example. If path is NULLor points to a node not found in the tree, the y and height fields of the rectangle will be filled with 0.

These background areas tile to cover the entire bin window. Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire scrollable area of the tree. Note that there may be invisible paths in between. Converts tree coordinates coordinates in full scrollable area of the tree to widget coordinates.

Sets the row that is highlighted for feedback. If path is NULLan existing highlight is removed. Determines the destination row for ggk given position. This image treefiew used for a drag icon. Sets column as the column where the interactive search code should search in for the current model. The enable-search property controls whether simply typing text will also start an interactive search.

Note that column refers to a column of the current model. The search column is reset to -1 when the model is changed.