Overlay.ahk

; gdi+ ahk tutorial 3 written by tic (Tariq Porter)
; Requires Gdip.ahk either in your Lib folder as standard library or using #Include
;
; Tutorial to take make a gui from an existing image on disk
; For the example we will use png as it can handle transparencies. The image will also be halved in size

/*
	Author: Eruyome
	Tutorial used as template to show PoE UI overlay
	Overlay images created by https://www.reddit.com/user/Musti_A, reddit post https://www.reddit.com/r/pathofexile/comments/5x9pgt/i_made_some_poe_twitch_stream_overlays_free/
*/

if not A_IsAdmin
	Run *RunAs "%A_ScriptFullPath%"

#SingleInstance, Force
#NoEnv
SetBatchLines, -1

; Uncomment if Gdip.ahk is not in your standard library
#Include, Gdip_All.ahk

; Start gdi+
If !pToken := Gdip_Startup()
	{
	   MsgBox, 48, gdiplus error!, Gdiplus failed to start. Please ensure you have gdiplus on your system
	}
OnExit, Exit

global image1 := "Syndicate.png"
global image2 := "Incursion.png"
global image3 := "Map.png"
global image4 := "Fossil.png"
global GuiOn1 := 0
global GuiOn2 := 0
global GuiOn3 := 0
global GuiOn4 := 0

global poeWindowName = "Path of Exile ahk_class POEWindowClass"

; Create a layered window (+E0x80000 : must be used for UpdateLayeredWindow to work!) that is always on top (+AlwaysOnTop), has no taskbar entry or caption


Loop 4
{
    ; Create two layered windows (+E0x80000 : must be used for UpdateLayeredWindow to work!) that is always on top (+AlwaysOnTop), has no taskbar entry or caption
    Gui, %A_Index%: -Caption +E0x80000 +LastFound +AlwaysOnTop +ToolWindow +OwnDialogs
    ; Show the window
 
    ; Get a handle to this window we have created in order to update it later
    hwnd%A_Index% := WinExist()
}



Loop 4
{
If (GuiON%A_Index% = 0) {
	Gosub, CheckWinActivePOE
	SetTimer, CheckWinActivePOE, 100
	GuiON%A_Index% = 1
	
	; Show the window
	Gui, %A_Index%: Show, NA
}
Else {
	SetTimer, CheckWinActivePOE, Off      
	Gui, %A_Index%: Hide	
	GuiON%A_Index% = 0
}
}


; If the image we want to work with does not exist on disk, then download it...

; Get a bitmap from the image

Loop 4{
pBitmap%A_Index% := Gdip_CreateBitmapFromFile(image%A_Index%)

}

Loop 4{
If !pBitmap%A_Index%
{
	MsgBox, 48, File loading error!, Could not load the image specified
	ExitApp
}

}


; Get the width and height of the bitmap we have just created from the file
; This will be the dimensions that the file is
Loop 4{
Width%A_Index% := Gdip_GetImageWidth(pBitmap%A_Index%), Height%A_Index% := Gdip_GetImageHeight(pBitmap%A_Index%)
hbm%A_Index% := CreateDIBSection(Width%A_Index%, Height%A_Index%)
hdc%A_Index% := CreateCompatibleDC()
obm%A_Index% := SelectObject(hdc%A_Index%, hbm%A_Index%)
G%A_Index% := Gdip_GraphicsFromHDC(hdc%A_Index%)
Gdip_SetInterpolationMode(G%A_Index%, 7)
Gdip_DrawImage(G%A_Index%, pBitmap%A_Index%, 0, 0, Width%A_Index%, Height%A_Index%, 0, 0, Width%A_Index%, Height%A_Index%)
UpdateLayeredWindow(hwnd%A_Index%, hdc%A_Index%, 0, 0, Width%A_Index%, Height%A_Index%)
SelectObject(hdc%A_Index%, obm%A_Index%)
DeleteObject(hbm%A_Index%)
DeleteDC(hdc%A_Index%)
Gdip_DeleteGraphics(G%A_Index%)
Gdip_DisposeImage(pBitmap%A_Index%)
}


Return
;#######################################################################

CheckWinActivePOE:
	GuiControlGet, focused_control, focus
	
Loop 4
{
	If(WinActive(poeWindowName))
		If (GuiON%A_Index% = 0) {
			
			GuiON%A_Index% := 0
			
		}
	If(!WinActive(poeWindowName))
		If (GuiON%A_Index% = 1)
		{
			Gui, %A_Index%: Hide
			GuiON%A_Index% := 0
		}
		
}
Return

#IfWinActive Path of Exile
f2::
If (GuiON1 = 1) {
Gui, 1: Hide
GuiON1 := 0
}

Else{
Gui, 1: Show, NA
GuiON1 := 1
}
return

f3::
If (GuiON2 = 1) {
Gui, 2: Hide
GuiON2 := 0
}

Else{
Gui, 2: Show, NA
GuiON2 := 1
}
return

f4::
If (GuiON3 = 1) {
Gui, 3: Hide
GuiON3 := 0
}

Else{
Gui, 3: Show, NA
GuiON3 := 1
}
return

f6::
If (GuiON4 = 1) {
Gui, 4: Hide
GuiON4 := 0
}

Else{
Gui, 4: Show, NA
GuiON4 := 1
}
return


Exit:
; gdi+ may now be shutdown on exiting the program
Gdip_Shutdown(pToken)
ExitApp


Return