C# Класс YamuiFramework.HtmlRenderer.WinForms.HtmlPanel

Provides HTML rendering using the text property.
WinForms control that will render html content in it's client rectangle.
If AutoScroll is true and the layout of the html resulted in its content beyond the client bounds of the panel it will show scrollbars (horizontal/vertical) allowing to scroll the content.
If AutoScroll is false html content outside the client bounds will be clipped.
The control will handle mouse and keyboard events on it to support html text selection, copy-paste and mouse clicks.

The major differential to use HtmlPanel or HtmlLabel is size and scrollbars.
If the size of the control depends on the html content the HtmlLabel should be used.
If the size is set by some kind of layout then HtmlPanel is more suitable, also shows scrollbars if the html contents is larger than the control client rectangle.

AutoScroll:

Allows showing scrollbars if html content is placed outside the visible boundaries of the panel.

LinkClicked event:

Raised when the user clicks on a link in the html.
Allows canceling the execution of the link.

StylesheetLoad event:

Raised when a stylesheet is about to be loaded by file path or URI by link element.
This event allows to provide the stylesheet manually or provide new source (file or uri) to load from.
If no alternative data is provided the original source will be used.

ImageLoad event:

Raised when an image is about to be loaded by file path or URI.
This event allows to provide the image manually, if not handled the image will be loaded from file or download from URI.

RenderError event:

Raised when an error occurred during html rendering.

Наследование: System.Windows.Forms.ScrollableControl

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Защищенные свойства (Protected)

Свойство	Тип	Описание
_baseCssData	YamuiFramework.HtmlRenderer.Core.Core.CssData
_baseRawCssData	string
_borderStyle	BorderStyle
_htmlContainer	HtmlContainer
_lastScrollOffset	Point
_text	string
_textRenderingHint	TextRenderingHint
_useSystemCursors	bool

Private Properties

Свойство	Тип	Описание
OnBoxClicked	void
OnImageLoad	void
OnLinkClicked	void
OnRefresh	void
OnRenderError	void
OnScrollChange	void
OnStylesheetLoad	void
WndProc	void
YamuiThemeManagerOnOnCssChanged	void

Открытые методы

Метод	Описание
GetElementRectangle ( string elementId ) : RectangleF?	Get the rectangle of html element as calculated by html layout. Element if found by id (id attribute on the html element). Note: to get the screen rectangle you need to adjust by the hosting control.
GetHtml ( ) : string	Get html from the current DOM tree with inline style.
HtmlPanel ( ) : System	Creates a new HtmlPanel and sets a basic css for it's styling.
ScrollToElement ( string elementId ) : void	Adjust the scrollbar of the panel on html element by the given id. The top of the html element rectangle will be at the top of the panel, if there is not enough height to scroll to the top the scroll will be at maximum.

Защищенные методы

Метод	Описание
Dispose ( bool disposing ) : void	Release the html container resources.
InvokeMouseMove ( ) : void	call mouse move to handle paint after scroll or html change affecting mouse cursor.
IsInputKey ( Keys keyData ) : bool	Used to add arrow keys to the handled keys in OnKeyDown.
OnBorderStyleChanged ( EventArgs e ) : void	Raises the BorderStyleChanged event.
OnBoxClicked ( YamuiFramework.HtmlRenderer.Core.Core.Entities.BoxClickedEventArgs e ) : void	Propagate the BoxClicked event from root container.
OnClick ( EventArgs e ) : void	Set focus on the control for keyboard scrollbars handling.
OnImageLoad ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlImageLoadEventArgs e ) : void	Propagate the image load event from root container.
OnKeyDown ( KeyEventArgs e ) : void	Handle key down event for selection, copy and scrollbars handling.
OnLayout ( System.Windows.Forms.LayoutEventArgs levent ) : void	Perform the layout of the html in the control.
OnLinkClicked ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlLinkClickedEventArgs e ) : void	Propagate the LinkClicked event from root container.
OnMouseDoubleClick ( MouseEventArgs e ) : void	Handle mouse double click to select word under the mouse.
OnMouseDown ( MouseEventArgs e ) : void	Handle mouse down to handle selection.
OnMouseLeave ( EventArgs e ) : void	Handle mouse leave to handle cursor change.
OnMouseMove ( MouseEventArgs e ) : void	Handle mouse move to handle hover cursor and text selection.
OnMouseUp ( MouseEventArgs e ) : void	Handle mouse up to handle selection and link click.
OnPaint ( PaintEventArgs e ) : void	Perform paint of the html in the control.
OnRefresh ( HtmlRefreshEventArgs e ) : void	Handle html renderer invalidate and re-layout as requested.
OnRenderError ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlRenderErrorEventArgs e ) : void	Propagate the Render Error event from root container.
OnScrollChange ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlScrollEventArgs e ) : void	On html renderer scroll request adjust the scrolling of the panel to the requested location.
OnStylesheetLoad ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlStylesheetLoadEventArgs e ) : void	Propagate the stylesheet load event from root container.
PerformHtmlLayout ( ) : void	Perform html container layout by the current panel client size.
UpdateScroll ( Point location ) : void	Adjust the scrolling of the panel to the requested location.

Приватные методы

Метод	Описание
OnBoxClicked ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.BoxClickedEventArgs e ) : void
OnImageLoad ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlImageLoadEventArgs e ) : void
OnLinkClicked ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlLinkClickedEventArgs e ) : void
OnRefresh ( object sender, HtmlRefreshEventArgs e ) : void
OnRenderError ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlRenderErrorEventArgs e ) : void
OnScrollChange ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlScrollEventArgs e ) : void
OnStylesheetLoad ( object sender, YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlStylesheetLoadEventArgs e ) : void
WndProc ( Message &m ) : void
YamuiThemeManagerOnOnCssChanged ( ) : void

Описание методов

Dispose() защищенный Метод

Release the html container resources.

protected Dispose ( bool disposing ) : void
disposing	bool
Результат	void

GetElementRectangle() публичный Метод

Get the rectangle of html element as calculated by html layout.
Element if found by id (id attribute on the html element).
Note: to get the screen rectangle you need to adjust by the hosting control.

public GetElementRectangle ( string elementId ) : RectangleF?
elementId	string	the id of the element to get its rectangle
Результат	RectangleF?

GetHtml() публичный Метод

Get html from the current DOM tree with inline style.

public GetHtml ( ) : string
Результат	string

HtmlPanel() публичный Метод

Creates a new HtmlPanel and sets a basic css for it's styling.

public HtmlPanel ( ) : System
Результат	System

InvokeMouseMove() защищенный Метод

call mouse move to handle paint after scroll or html change affecting mouse cursor.

protected InvokeMouseMove ( ) : void
Результат	void

IsInputKey() защищенный Метод

Used to add arrow keys to the handled keys in OnKeyDown.

protected IsInputKey ( Keys keyData ) : bool
keyData	Keys
Результат	bool

OnBorderStyleChanged() защищенный Метод

Raises the BorderStyleChanged event.

protected OnBorderStyleChanged ( EventArgs e ) : void
e	System.EventArgs
Результат	void

OnBoxClicked() защищенный Метод

Propagate the BoxClicked event from root container.

protected OnBoxClicked ( YamuiFramework.HtmlRenderer.Core.Core.Entities.BoxClickedEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.BoxClickedEventArgs
Результат	void

OnClick() защищенный Метод

Set focus on the control for keyboard scrollbars handling.

protected OnClick ( EventArgs e ) : void
e	System.EventArgs
Результат	void

OnImageLoad() защищенный Метод

Propagate the image load event from root container.

protected OnImageLoad ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlImageLoadEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlImageLoadEventArgs
Результат	void

OnKeyDown() защищенный Метод

Handle key down event for selection, copy and scrollbars handling.

protected OnKeyDown ( KeyEventArgs e ) : void
e	System.Windows.Forms.KeyEventArgs
Результат	void

OnLayout() защищенный Метод

Perform the layout of the html in the control.

protected OnLayout ( System.Windows.Forms.LayoutEventArgs levent ) : void
levent	System.Windows.Forms.LayoutEventArgs
Результат	void

OnLinkClicked() защищенный Метод

Propagate the LinkClicked event from root container.

protected OnLinkClicked ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlLinkClickedEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlLinkClickedEventArgs
Результат	void

OnMouseDoubleClick() защищенный Метод

Handle mouse double click to select word under the mouse.

protected OnMouseDoubleClick ( MouseEventArgs e ) : void
e	MouseEventArgs
Результат	void

OnMouseDown() защищенный Метод

Handle mouse down to handle selection.

protected OnMouseDown ( MouseEventArgs e ) : void
e	MouseEventArgs
Результат	void

OnMouseLeave() защищенный Метод

Handle mouse leave to handle cursor change.

protected OnMouseLeave ( EventArgs e ) : void
e	System.EventArgs
Результат	void

OnMouseMove() защищенный Метод

Handle mouse move to handle hover cursor and text selection.

protected OnMouseMove ( MouseEventArgs e ) : void
e	MouseEventArgs
Результат	void

OnMouseUp() защищенный Метод

Handle mouse up to handle selection and link click.

protected OnMouseUp ( MouseEventArgs e ) : void
e	MouseEventArgs
Результат	void

OnPaint() защищенный Метод

Perform paint of the html in the control.

protected OnPaint ( PaintEventArgs e ) : void
e	PaintEventArgs
Результат	void

OnRefresh() защищенный Метод

Handle html renderer invalidate and re-layout as requested.

protected OnRefresh ( HtmlRefreshEventArgs e ) : void
e	HtmlRefreshEventArgs
Результат	void

OnRenderError() защищенный Метод

Propagate the Render Error event from root container.

protected OnRenderError ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlRenderErrorEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlRenderErrorEventArgs
Результат	void

OnScrollChange() защищенный Метод

On html renderer scroll request adjust the scrolling of the panel to the requested location.

protected OnScrollChange ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlScrollEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlScrollEventArgs
Результат	void

OnStylesheetLoad() защищенный Метод

Propagate the stylesheet load event from root container.

protected OnStylesheetLoad ( YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlStylesheetLoadEventArgs e ) : void
e	YamuiFramework.HtmlRenderer.Core.Core.Entities.HtmlStylesheetLoadEventArgs
Результат	void

PerformHtmlLayout() защищенный Метод

Perform html container layout by the current panel client size.

protected PerformHtmlLayout ( ) : void
Результат	void

ScrollToElement() публичный Метод

Adjust the scrollbar of the panel on html element by the given id.
The top of the html element rectangle will be at the top of the panel, if there is not enough height to scroll to the top the scroll will be at maximum.

public ScrollToElement ( string elementId ) : void
elementId	string	the id of the element to scroll to
Результат	void

UpdateScroll() защищенный Метод

Adjust the scrolling of the panel to the requested location.

protected UpdateScroll ( Point location ) : void
location	Point	the location to adjust the scroll to
Результат	void

Описание свойств

_baseCssData защищенное свойство

the base stylesheet data used in the control

protected CssData,YamuiFramework.HtmlRenderer.Core.Core _baseCssData
Результат	YamuiFramework.HtmlRenderer.Core.Core.CssData

_baseRawCssData защищенное свойство

the raw base stylesheet data used in the control

protected string _baseRawCssData
Результат	string

_borderStyle защищенное свойство

The current border style of the control

protected BorderStyle _borderStyle
Результат	BorderStyle

_htmlContainer защищенное свойство

Underline html container instance.

protected HtmlContainer,YamuiFramework.HtmlRenderer.WinForms _htmlContainer
Результат	HtmlContainer

_lastScrollOffset защищенное свойство

The last position of the scrollbars to know if it has changed to update mouse

protected Point _lastScrollOffset
Результат	Point

_text защищенное свойство

the current html text set in the control

protected string _text
Результат	string

_textRenderingHint защищенное свойство

The text rendering hint to be used for text rendering.

protected TextRenderingHint _textRenderingHint
Результат	TextRenderingHint

_useSystemCursors защищенное свойство

If to use cursors defined by the operating system or .NET cursors

protected bool _useSystemCursors
Результат	bool