/*

Class: CPictureControl

A picture control.



This control extends <CControl>. All basic properties and functions are implemented and documented in this class.

*/

Class CPictureControl Extends CControl

{

	__New(Name, Options, Text, GUINum)

	{

		base.__New(Name, Options, Text, GUINum)

		this.Type := "Picture"

		this._.Picture := Text

		this._.Insert("Picture", "Text")

		this._.Insert("ControlStyles", {Center : 0x200, ResizeImage : 0x40})

		this._.Insert("Events", ["Click", "DoubleClick"])

	}

	

	/*

	Variable: Picture

	The picture can be changed by assigning a filename to this property.

	If the picture was set by providing a hBitmap in <SetImageFromHBitmap>, this variable will be empty.

	

	Variable: PictureWidth

	The width of the currently displayed picture in pixels.

	

	Variable: PictureHeight

	The height of the currently displayed picture in pixels.

	*/

	__Get(Name) 

    {

		;~ global CGUI

		if(Name != "GUINum" && !CGUI.GUIList[this.GUINum].IsDestroyed)

		{

			DetectHidden := A_DetectHiddenWindows

			DetectHiddenWindows, On

			if(Name = "Picture")

				Value := this._.Picture

			else if(Name = "PictureWidth" || Name = "PictureHeight")

			{

				if(!this._.HasKey(Name))

				{

					pBitmap := Gdip_CreateBitmapFromFile(this._.Picture) ;Note: This does not work if the user specifies icon number or other special properties in picture path since these are handled as separate parameters here.

					Gdip_GetImageDimensions(pBitmap, w, h)

					this._.PictureWidth := w

					this._.PictureHeight := h

					Gdip_DisposeImage(pBitmap)

				}

				Value := this._[Name]

			}

			if(!DetectHidden)

				DetectHiddenWindows, Off

			if(Value != "")

				return Value

		}

	}

	

	__Set(Name, Value)

	{

		;~ global CGUI

		if(!CGUI.GUIList[this.GUINum].IsDestroyed)

		{

			DetectHidden := A_DetectHiddenWindows

			DetectHiddenWindows, On

			Handled := true

			if(Name = "Picture")

			{

				Gui, % this.GUINum ":Default"

				GuiControl,, % this.ClassNN, %Value%

				this._.Picture := Value

				this._.Remove("PictureWidth")

				this._.Remove("PictureHeight")

			}

			else

				Handled := false

		if(!DetectHidden)

			DetectHiddenWindows, Off

		if(Handled)

			return Value

		}

	}

	/*

	Function: SetImageFromHBitmap

	Sets the image of this control.

	

	Parameters:

		hBitamp - The bitmap handle to which the picture of this control is set

	*/

	SetImageFromHBitmap(hBitmap, Path = "")

	{

		SendMessage, 0x172, 0x0, hBitmap,, % "ahk_id " this.hwnd

		DllCall("gdi32\DeleteObject", "PTR", ErrorLevel)

		this._.Remove("PictureWidth")

		this._.Remove("PictureHeight")

		this._.Picture := Path

	}

	

	/*

	Event: Introduction

	To handle control events you need to create a function with this naming scheme in your window class: ControlName_EventName(params)

	The parameters depend on the event and there may not be params at all in some cases.

	Additionally it is required to create a label with this naming scheme: GUIName_ControlName

	GUIName is the name of the window class that extends CGUI. The label simply needs to call CGUI.HandleEvent(). 

	For better readability labels may be chained since they all execute the same code.

	Instead of using ControlName_EventName() you may also call <CControl.RegisterEvent> on a control instance to register a different event function name.

	

	Event: Click()

	Invoked when the user clicked on the control.

	*/

	HandleEvent(Event)

	{

		this.CallEvent(Event.GUIEvent = "DoubleClick" ? "DoubleClick" : "Click")

	}

	



}