Class EditWidgetBase

base for all editor widgets

Inherits from

Constructors

Name Description
this

Fields

Name Type Description
FOCUS_RECT_PADDING immutable(int)
onCheckChangeListener Signal!(dlangui.widgets.widget.OnCheckHandler) checked state change event listener (bool delegate(Widget, bool))
onClickListener Signal!(dlangui.widgets.widget.OnClickHandler) on click event listener (bool delegate(Widget))
onFocusChangeListener Signal!(dlangui.widgets.widget.OnFocusHandler) focus state change event listener (bool delegate(Widget, bool))
onKeyListener Signal!(dlangui.widgets.widget.OnKeyHandler) key event listener (bool delegate(Widget, KeyEvent)) - return true if event is processed by handler
onMouseListener Signal!(dlangui.widgets.widget.OnMouseHandler) mouse event listener (bool delegate(Widget, MouseEvent)) - return true if event is processed by handler
_camelCasePartsAsWords bool
_caretPos TextPosition
_content EditableContent
_fixedFont bool
_foldingPaneWidth uint
_foldingWidth int
_iconsPaneWidth uint
_iconsWidth int
_leftPaneBackgroundColor uint
_leftPaneBackgroundColor2 uint
_leftPaneBackgroundColor3 uint
_leftPaneLineNumberBackgroundColor uint
_leftPaneLineNumberColor uint
_leftPaneWidth int
_lineHeight int
_lineNumbersWidth int
_maxFontSize int
_minFontSize int
_modificationMarksPaneWidth uint
_modificationMarksWidth int
_ownContent bool when ownContent is false, content should not be destroyed in editor destructor
_popupMenu MenuItem
_replaceMode bool
_scrollPos Point
_selectionColorFocused uint
_selectionColorNormal uint
_selectionRange TextRange
_showFolding bool
_showIcons bool
_showLineNumbers bool
_showModificationMarks bool
_spaceWidth int
_tabSize int
_useSpacesForTabs bool
_wantTabs bool
_acceleratorMap ActionMap
_action Action
_checkable bool
_checked bool
_children ObjectList!(dlangui.widgets.widget.Widget)
_clickable bool
_clientRect Rect inner area, excluding additional controls like scrollbars
_focusable bool
_focusGroup bool
_fullScrollableArea Rect
_hscrollbar ScrollBar horizontal scrollbar control
_hscrollbarMode ScrollBarMode
_id string widget id
_measuredHeight int height measured by measure()
_measuredWidth int width measured by measure()
_needDraw bool true to force redraw
_needLayout bool true to force layout
_ownStyle Style own copy of style - to override some of style properties, null of no properties overriden
_parent Widget parent widget
_pos Rect current widget position, set by layout()
_state uint widget state (set of flags from State enum)
_styleId string style id to lookup style in theme
_tabOrder ushort
_trackHover bool does widget need to track mouse Hover
_visibility Visibility widget visibility: either Visible, Invisible, Gone
_visibleScrollableArea Rect
_vscrollbar ScrollBar vertical scrollbar control
_vscrollbarMode ScrollBarMode
_window Window window (to be used for top level widgets only!)

Properties

Name Type Description
canFocus [get] bool returns true if widget is focusable and visible and enabled
content [set] EditWidgetBase set content object
content [get] EditableContent editor content object
popupMenu [get] MenuItem
popupMenu [set] EditWidgetBase
readOnly [get] bool readonly flag (when true, user cannot change content of editor)
readOnly [set] EditWidgetBase sets readonly flag
replaceMode [set] EditWidgetBase sets replace mode flag
replaceMode [get] bool replace mode flag (when true, entered character replaces character under cursor)
showLineNumbers [get, set] bool when true, line numbers are shown
tabSize [set] EditWidgetBase sets tab size (in number of spaces)
tabSize [get] int returns tab size (in number of spaces)
text [get] dstring get widget text
text [set] Widget set text
useSpacesForTabs [set] EditWidgetBase set new Tab key behavior flag: when true, spaces will be inserted instead of tabs
useSpacesForTabs [get] bool when true, spaces will be inserted instead of tabs
wantTabs [set] EditWidgetBase sets tab size (in number of spaces)
wantTabs [get] bool when true, Tab / Shift+Tab presses are processed internally in widget (e.g. insert tab character) instead of focus change navigation.
acceleratorMap [get] ActionMap
action [get, set] const(Action) action to emit on click
alignment [get] ubyte returns alignment (combined vertical and horizontal)
alignment [set] Widget sets alignment (combined vertical and horizontal)
alpha [set] Widget set widget drawing alpha value (0=opaque .. 255=transparent)
alpha [get] uint widget drawing alpha value (0=opaque .. 255=transparent)
animating [get] bool returns true is widget is being animated - need to call animate() and redraw
backgroundColor [set] Widget set background color for widget - override one from style
backgroundColor [get] uint returns background color
backgroundDrawable [get] Ref!(dlangui.graphics.resources.Drawable) background drawable
backgroundImageId [get, set] string background image id
canCheck [get] bool
canClick [get] bool
checkable [get] bool when true, control supports Checked state
checkable [set] Widget
checked [set] Widget set checked state
checked [get] bool get checked state
childCount [get] int returns number of children of this widget
clickable [get] bool when true, user can click this control, and get onClick listeners called
clickable [set] Widget
enabled [set] Widget change enabled state
enabled [get] bool return true if state has State.Enabled flag set
focusable [set] Widget
focusable [get] bool whether widget can be focused
focused [get] bool
focusGroup [get] bool When focus group is set for some parent widget, focus from one of containing widgets can be moved using keyboard only to one of other widgets containing in it and cannot bypass bounds of focusGroup.
focusGroup [set] Widget set focus group flag for container widget
focusRectColors [get] const(uint[]) returns colors to draw focus rectangle (one for solid, two for vertical gradient) or null if no focus rect should be drawn for style
font [get] Ref!(dlangui.graphics.fonts.Font) returns font set for widget using style or set manually
fontFace [get] string returns font face
fontFace [set] Widget set font face for widget - override one from style
fontFamily [get] FontFamily returns font family
fontFamily [set] Widget set font family for widget - override one from style
fontItalic [set] Widget set font style (italic/normal) for widget - override one from style
fontItalic [get] bool returns font style (italic/normal)
fontSize [get] ushort returns font size in pixels
fontSize [set] Widget set font size for widget - override one from style
fontWeight [get] ushort returns font weight
fontWeight [set] Widget set font weight for widget - override one from style
halign [get] Align returns vertical alignment
height [get] int returns current height of widget in pixels
id [get] string returns widget id, null if not set
id [set] Widget set widget id
layoutHeight [set] Widget sets layout height options (WRAP_CONTENT, FILL_PARENT, or some constant value)
layoutHeight [get] int returns layout height options (WRAP_CONTENT, FILL_PARENT, or some constant value)
layoutWeight [get] int returns layout weight (while resizing to fill parent, widget will be resized proportionally to this value)
layoutWeight [set] Widget sets layout weight (while resizing to fill parent, widget will be resized proportionally to this value)
layoutWidth [set] Widget sets layout width options (WRAP_CONTENT, FILL_PARENT, or some constant value)
layoutWidth [get] int returns layout width options (WRAP_CONTENT, FILL_PARENT, or some constant value)
left [get] int returns widget rectangle left position
margins [set] Widget set margins for widget - override one from style
margins [get] Rect get margins (between widget bounds and its background)
maxHeight [get] int returns max height constraint (SIZE_UNSPECIFIED if no constraint set)
maxHeight [set] Widget set max height constraint (SIZE_UNSPECIFIED for no constraint)
maxWidth [get] int returns max width constraint (SIZE_UNSPECIFIED if no constraint set)
maxWidth [set] Widget set max width constraint (SIZE_UNSPECIFIED for no constraint)
measuredHeight [get] int returns measured height (calculated during measure() call)
measuredWidth [get] int returns measured width (calculated during measure() call)
minHeight [get] int returns min height constraint
minHeight [set] Widget set max height constraint (0 for no constraint)
minWidth [get] int returns min width constraint
minWidth [set] Widget set max width constraint (0 for no constraint)
needDraw [get] bool returns true if redraw is required for widget and its children
needLayout [get] bool returns true if layout is required for widget and its children
padding [set] Widget set padding for widget - override one from style
padding [get] Rect get padding (between background bounds and content of widget)
parent [get] Widget returns parent widget, null for top level widget
parent [set] Widget sets parent for widget
pos [get] Rect returns widget rectangle
resetState [set] Widget remove state flags (set of flags from State enum)
setState [set] Widget add state flags (set of flags from State enum)
state [get] uint widget state (set of flags from State enum)
state [set] Widget set new widget state (set of flags from State enum)
styleId [get] string returns widget style id, null if not set
styleId [set] Widget set widget style id
tabOrder [set] Widget
tabOrder [get] ushort tab order - hint for focus movement using Tab/Shift+Tab
textColor [set] Widget set text color (ARGB 32 bit value)
textColor [get] uint get text color (ARGB 32 bit value)
textFlags [get] uint get text flags (bit set of TextFlag enum values)
textFlags [set] Widget set text flags (bit set of TextFlag enum values)
top [get] int returns widget rectangle top position
trackHover [get] bool mouse movement processing flag (when true, widget will change Hover state while mouse is moving)
trackHover [set] Widget set new trackHover flag value (when true, widget will change Hover state while mouse is moving)
valign [get] Align returns horizontal alignment
visibility [set] Widget sets widget visibility (Visible, Invisible, Gone)
visibility [get] Visibility returns widget visibility (Visible, Invisible, Gone)
visible [get] bool returns true if this widget and all its parents are visible
wantsKeyTracking [get] bool override and return true to track key events even when not focused
width [get] int returns current width of widget in pixels
window [get] Window returns window (if widget or its parent is attached to window)
window [set] Window sets window (to be used for top level widget from Window implementation). TODO: hide it from API?
ownStyle [get] Style enforces widget's own style - allows override some of style properties
stateStyle [get] const(Style) returns style for current widget state
style [get, set] const(Style) accessor to style - by lookup in theme by styleId (if style id is not set, theme base style will be used).

Methods

Name Description
canShowPopupMenu returns true if widget can show popup (e.g. by mouse right click at point x,y)
getCursorType returns mouse cursor type for widget
isActionEnabled override to change popup menu items state
onContentChange
onKeyEvent handle keys
onMenuItemAction
onMouseEvent process mouse event; return true if event is processed by widget.
onPopupMenuItem
showPopupMenu shows popup at (x,y)
addChild adds child, returns added item
addOnCheckChangeListener helper function to add onCheckChangeListener in method chain
addOnClickListener helper function to add onCheckChangeListener in method chain
addOnFocusChangeListener helper function to add onFocusChangeListener in method chain
animate animates window; interval is time left from previous draw, in hnsecs (1/10000000 of second)
applyAlign Applies alignment for content of size sz - set rectangle rc to aligned value of content inside of initial value of rc.
applyMargins Helper function: applies margins to rectangle
applyPadding Helper function: applies padding to rectangle
child returns child by index
childById find child by id, returns null if not found
childIndex returns index of widget in child list, -1 if passed widget is not a child of this widget
compareId compare widget id with specified value, returs true if matches
drawFocusRect draws focus rectangle, if enabled in styles
executeInUiThread execute delegate later in UI thread if this widget will be still available (can be used to modify UI from background thread, or just to postpone execution of action)
findFocusableChild searches children for first focusable item, returns null if not found
focusGroupWidget find nearest parent of this widget with focusGroup flag, returns topmost parent if no focusGroup flag set to any of parents.
fullContentSize calculate full content size in pixels
handleMoveFocusUsingKeys
invalidate request redraw
isChild returns true if item is child of this widget (when deepSearch == true - returns true if item is this widget or one of children inside children tree).
isPointInside returns true if point is inside of this widget
layout Set widget rectangle to specified value and layout widget contents. (Step 2 of two phase layout).
makeRectVisible
measure Measure widget according to desired width and height constraints. (Step 1 of two phase layout).
onDraw Draw widget at its position to buffer
onEvent handle custom event
onHScroll process horizontal scrollbar event
onScrollEvent handle scroll event
onVScroll process vertical scrollbar event
removeAllChildren
removeChild removes child by ID, returns removed item
removeChild removes child, returns removed item
requestLayout request relayout of widget and its children
setFocus sets focus to this widget or suitable focusable child, returns previously focused widget
calcLineWidth
caretRect returns cursor rectangle
clientToTextPos
correctCaretPos when cursor position or selection is out of content bounds, fix it to nearest valid position
drawCaret draws caret
drawLeftPane
drawLeftPaneFolding
drawLeftPaneIcons
drawLeftPaneLineNumbers
drawLeftPaneModificationMarks
ensureCaretVisible
findKeyAction map key to action
handleAction override to handle specific actions
handleClientRectLayout override to support modification of client rect after change, e.g. apply offset
indentLine change line indent
indentRange indent / unindent range
lineCount override for multiline editors
measureVisibleText
removeRangeText
removeSelectionTextIfSelected
spaceBefore
spacesForTab generate string of spaces, to reach next tab position
textPosToClient
updateCaretPositionByMouse
updateFontProps
updateLeftPaneWidth override to add custom items on left panel
updateMaxLineWidth
updateSelectionAfterCursorMovement
wholeLinesSelected returns true if one or more lines selected fully
drawClient
drawExtendedArea
handleCheckChange override to handle check changes
handleClick
handleFocusChange override to handle focus changes
measuredContent helper function for implement measure() when widget's content dimensions are known
updateHScrollBar update horizontal scrollbar widget position
updateScrollBars update scrollbar positions
updateVScrollBar update verticat scrollbar widget position

Authors

Vadim Lopatin, coolreader.org@gmail.com

Copyright

Vadim Lopatin, 2014

License

Boost License 1.0