Main class of the library. Used to create and display HTML documents

Properties

Surface: TSurface

Reference to TSurface objects handling grahics procedures

Changed: boolean

Change flag, Indicates that styles calculation is needed (CalcStyles)

Styles: TStyles

Style Sheets

NeedRepaint: boolean

Indicates that document repaint is needed (Repaint)

NeedRecalc

Indicates that document calculation is needed (Recalc)

SubscribedtoAnimation: boolean

Animation subscription flag. Indicates that document receives animation events

DestCanvas: TCanvas

Last destination canvas

Control: TControl;

Link to VCL TControl. Used by control tag elements

Selection: TDocSelection

Document selection object

DrawRect: TRect;

Last output rectangle on DestCanvas

Methods

procedure Parse(html: string)

Parses HTML text and builds element tree

procedure Draw(Canvas: TCanvas; const R: TRect); 

Calculate CSS Styles (CalcStyle), calculate document (Recalc) and paints document to Canvas in R region

procedure CalcSize(FixedWidth: integer=0)

Calculates document size (height/width) Returns sizes in CalcWidth and CalcHeight properties You can specify fixed width and calculate height only

function CalcStyle(Styles: TStyles): boolean

Calculates document styles

procedure OnMouseMove(x, y: integer; State: TShiftState)

Raises document MouseMove event

procedure OnMouseDown(x, y: integer; Down: boolean)

Raises document MouseDown event

procedure Recalc

Calculate document

function SelectedText: string

Document selected text

procedure Repaint;

Paints document to last canvas provided by Draw

Events

property OnClick: TNotifyEvent

Link click event

property BeforePaint: TNotifyEvent

Before paint event

property OnGetUrl: TGetUrlEvent

Used bi img elements to get image data img

property OnRepaint: TNotifyEvent

Global container for HtDocument styles and events

Properties

property Styles: TStrings;

Global style sheet for project

property OnGetURL: TGetURLEvent read fOnGetURL write fOnGetURL;

Global OnGetUrl handler

Current document selection

Properties

StartElement, EndElement: TElement

First/Last selected elements

StartPos, EndPos: integer

Position of selection in first and last elements

Methods

function InSelection(E: TElement): boolean;

Checks if E is in selection

function Empty: boolean;

Checks selection os not empty

function Inverted: boolean;

Indicates inverted selection (First>Last)

procedure Clear;

Clears selection

Document style

Properties

Margin: array[0..3] of TMeasure; 

Element Margins (outer space)

Padding: array[0..3] of TMeasure; 

Element Paddings (inner space)

Border: array[0..3] of THtBorderStyle;

Element borders (top, right, bottom, left)

Background: TElementBackground;

Element background; Contains color, gradients, blur, image

HAlign: THAlign;

Horizontal alignment

VAlign: TVAlign;

Vertical alignment

FontSize: TMeasure;

Size of the font

Display: TDisplayStyle;

Display type (none, inline, block...)

Left, Top: TMeasure;

Fixed position of the element

Width, Height: TMeasure;

Fixed width and height

Float: TFloat;

Float type (left, right)

Position: TElementPosition;

Position type (absolute, relative...)

BoxShadow: TElementShadow;

Box shadow (color, position, blur)

BorderSpacingX, BorderSpacingY: TMeasure;

Border spacing

ZIndex: integer;

Z Index of the element

Clear: set of TElementClear;

Clear type (left, right, both)

Opacity: single;

Opacity (0..1)

TextColor: cardinal;

Element text color

TextStyle: TFontStyles;

Element text style (bold, italic...)

FontName: string;

Font family

Zoom: single;

Zoom index

Transform: TTransform;

Transform type (rotate...)

WhiteSpace: TWhiteSpace;

White space

ListStyleType: TListStyleType;

List type (none, circle...)

CurrentPC: set of TCSSPseudoclass;

List of current pseudoclasses

property  Element: TElement

Base class for HTML elements

Properties

Id: string;

Element ID

StyleClass: string;

Element classes (class attribute)

Tag: string;

Tag name

Content: string;

Element content (for text elements contains text, for image and elements - src, for a elements - href)

Style: TElementStyle;

Style object

OuterRect, BorderRect, InnerRect: TRect;

Element rectangles (see CSS box model)

Parent: TElement;

Element parent

Container: TElement;

Element container (first non-inline parent)

CalcWidth, CalcHeight : integer;

Calculated outer width and height

InnerWidth, InnerHeight : integer;

Calculated inner width and height

RealLeft, RealTop: integer;

Real position of the element

ContentWidth, ContentHeight: integer; 

Element content width and height

SelfStyle: string;

style attribute

SelfRects: array of TRect;

All element rectangles

Drawed: boolean;

Indicates than element was painted

Index: currency;

Global index of the element

SelfFlow: TFlow;

TFlow object for non-inline elements

StartLine, EndLine: integer;

First and last line in Container.Flow

Before, After, Master: TElement;

:before and :after elements property Elements: TElementList read getElements; Child elements property Document: THtDocument read GetDocument; Document

Methods

Text element class

Properties

Methods

Class for img tag fot img

Properties

Methods

Class for input tag

Properties

Methods

VCL control container class

Properties

Methods

Class for fieldset tag

Properties

Methods

Table element class

Properties

Methods