• Throughout we distinguish between buffer coordinates which are pixels with the origin at the upper left corner of the first character on the first line. Window coordinates are relative to the top left pixel which is visible in the current TextView. Coordinates from Events are in the latter relation. The conversion can be done with textViewWindowToBufferCoords.

TODO

• If PangoTabArray is bound: do textViewSetTabs and textViewGetTabs

Scroll to the position of the supplied TextMark.

• Supplying xalign, yalign gives a goal position of the TextMark within screen bounds. 0,0 means left, top and 1.0,1.0 means right, bottom.
• Supply Nothing if the goal is to bring the position into view with the minimum of scrolling.
• withinMargin is within [0.0 .. 0.5) and imposes an extra margin at all four sides of the window within which xalign and yalign are evaluated.
• The line distances are calculated in an idle handler. Calling this function ensures that the line heights are indeed evaluated before the scroll is carried out.

Scroll to the position of the supplied TextIter.

• The position might not be correct due to the delayed calculation of the line heights.
• Returns True if the function actually scrolled.

Scroll the visible area of the widget so the TextMark becomes visible.

• This call is equivalent to textViewScrollToMark tm 0.0 Nothing tv.

Move a TextMark within the buffer until it is in the currently visible area of the widget.

• Returns True if the Mark was moved.

Move the cursor within the buffer until it is in the currently visible area of the widget.

• Returns True if the Mark was moved.

Get the TextIter at the start of the line containing the coordinate y.

• y is in buffer coordinates.
• Returns the TextIter and the top of the line.

Get the underlying DrawWindow.

• The TextWindowType determines which window of the TextWidget we would like to receive.
• Returns Nothing if there is no DrawWindow of the specified type.

Retrieve the type of window the TextView widget contains.

• Usually used to find out which window an event corresponds to. An emission of an event signal of TextView yields a DrawWindow. This function can be used to see if the event actually belongs to the main text window.

Set the border width of the TextView widget.

• Sets the width of TextWindowLeft or TextWindowRight, or the height of TextWindowTop or TextWindowBottom. Automatically destroys the corresponding window if the size is set to 0 and creates the window if the size is set to non-zero. This function can only used with the four window types mentioned.

Retrieve the border width of the specified window.

• See textViewSetBorderWindowSize.

Move the iterator forwards by one display line.

• Moves the given TextIter forward by one display (wrapped) line. A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view's width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.

Move the iterator backwards by one display line.

• See textViewForwardDisplayLine.

Move the iterator forwards and to the end.

• Like textViewForwardDisplayLine but moves to the end of the line as well.

Move the iterator backwards and to the end.

• See textViewForwardDisplayLineEnd.

Move the iterator forwards and to the start.

• Like textViewForwardDisplayLine but moves to the start of the line as well.

Move the iterator backwards and to the start.

• See textViewForwardDisplayLineStart.

Determines whether the iter is at the start of a display line.

• See textViewForwardDisplayLine for an explanation of display lines vs. paragraphs.

Move the iterator a number of lines.

• The count is in display lines. See textViewForwardDisplayLine.

Create a new TextChildAnchor.

• Using textBufferCreateChildAnchor is usually simpler then executing this function and textBufferInsertChildAnchor.

Retrieve all Widgets at this TextChildAnchor.

• The widgets in the returned list need to be upcasted to what they were.

Place a widget in within the text.

• This function places a Widget at an absolute pixel position into the TextView. Note that any scrolling will leave the widget in the same spot as it was.
• The position x, y is relative to the DrawWindow specified by TextWindowType.

Set the number of pixels above each paragraph.

• Tags in the buffer may override this default.

Get the number of pixels above each paragraph.

• Tags in the buffer may override this default.

Set the number of pixels below each paragraph.

• Tags in the buffer may override this default.

Get the number of pixels below each paragraph.

• Tags in the buffer may override this default.

Set the number of pixels between lines inside a wraped paragraph.

• Tags in the buffer may override this default.

Get the number of pixels between lines inside a wraped paragraph.

• Tags in the buffer may override this default.

Set the number of pixels in the margin.

• Tags in the buffer may override this default.

Get the number of pixels in the margin.

• Tags in the buffer may override this default.

Set the number of pixels in the margin.

• Tags in the buffer may override this default.

Get the number of pixels in the margin.

• Tags in the buffer may override this default.

Set the indentation in pixels for the first line in a paragraph.

• Tags in the buffer may override this default.
• The indentation may be negative.

Get the indentation in pixels for the first line in a paragraph.

• Tags in the buffer may override this default.
• The indentation may be negative.

Copying to the clipboard.

• This signal is emitted when a selection is copied to the clipboard.
• The action itself happens when the TextView processes this signal.

Cutting to the clipboard.

• This signal is emitted when a selection is cut out and copied to the clipboard. The action itself happens when the textview processed this request.

Deleting text.

• The widget will remove the specified number of units in the text where the meaning of units depends on the kind of deletion.
• The action itself happens when the TextView processes this signal.

Inserting text.

• The widget will insert the string into the text where the meaning of units depends on the kind of deletion.
• The action itself happens when the TextView processes this signal.

Moving the cursor.

• The signal specifies what kind and how many steps the cursor will do. The flag is set to True if this movement extends a selection.
• The action itself happens when the TextView processes this signal.

Moving the focus.

• The action itself happens when the TextView processes this signal.

Page change signals.

• The signal specifies how many pages the view should move up or down. The flag is set to True if this movement extends a selection.
• The action itself happens when the TextView processes this signal.
• Figure out why this signal is called horizontally, not vertically.

Pasting from the clipboard.

• This signal is emitted when something is pasted from the clipboard.
• The action itself happens when the TextView processes this signal.

Add menu entries to context menus.

• This signal is emitted if a context menu within the TextView is opened. This signal can be used to add application specific menu items to this popup.

Inserting an anchor.

• This signal is emitted when anchor is inserted into the text.
• The action itself happens when the TextView processes this signal.

Insert/Overwrite mode has changed.

• This signal is emitted when the TextView changes from inserting mode to overwriting mode and vice versa.
• The action itself happens when the TextView processes this signal.