;ImageMap by Frankie 'TechLord' Taylor 12/06/2004
Const IMAGEMAP_AREA_MAX%=256
Global imagemapCurrent.imagemap
Type imagemap
;Purpose: Store Image and HotSpots
Field id%
Field name$
Field x#
Field y#
Field imgsrc$
Field image%
Field hotspots%
Field hotspot.hotspot[IMAGEMAP_AREA_MAX%]
Field state%
End Type
Type hotspot
;Purpose: Stores Coords, target, and command information
Field id%
Field typeid%
Field coord[3]
Field target$
Field command$
Field state%
End Type
Function imagemapLoad.imagemap(imagemapname$,imagemapfilename$,imagemapsrcname$="")
;Purpose: Parses html client side imagemap file.
;Parameters:
; imagemapname$ - name of imagemap. Can be used for reference purposes.
; imagemapfilename$ - html map file name, *.htm extension not required.
; imagemapsrcname$ - image file name. Valid map format extension required.
;Return:
imagemapfile%=OpenFile(imagemapfilename+".htm") ;*.map
If Not imagemapfile% Return Null
While Not Eof(imagemapfile%)
imagemapfileline$=Lower(ReadLine(imagemapfile%))
imagemapfilelinelength%=Len(imagemapfileline$)
For loop% = 1 To imagemapfilelinelength%
imagemapchar$=Mid$(imagemapfileline$,loop%,1)
Select imagemapchar$
Case " ","<",">","=",Chr(34),Chr(39)
;ignor whitespace and tags
imagemapword$=nil$
Default
imagemapword$=imagemapword$+imagemapchar$
End Select
Select imagemapword$
Case "name"
this.imagemap=New imagemap
thisimgsrc$=imagemapsrcname$
thisimage%=LoadImage(thisimgsrc$)
this
ame$=imagemapname$
thisstate%=1
Case "area"
thishotspots%=thishotspots%+1
thishotspot[thishotspots%] = New hotspot
hotspot.hotspot=thishotspot[thishotspots%] ;testing
Case "coords" ;coords define shape, rect by by limitation
For loop% = loop%+1 To imagemapfilelinelength%
imagemapchar$=Mid$(imagemapfileline$,loop%,1)
Select imagemapchar$
Case "="," "
hotspotcoord%=0
imagemapword$=nil$
Case ","
thishotspot[thishotspots%]coord[hotspotcoord%]=imagemapword$
hotspotcoord%=hotspotcoord%+1
imagemapword$=nil$
Case Chr(34),Chr(39);quotes
If hotspotcoord%>0 Or imagemapword$<>nil$
thishotspot[thishotspots%]coord[hotspotcoord%]=imagemapword$
Exit
EndIf
Default
imagemapword$=imagemapword$+imagemapchar$
End Select
Next
Case "href" ;command$
For loop% = loop%+1 To imagemapfilelinelength%
imagemapchar$=Mid$(imagemapfileline$,loop%,1)
Select imagemapchar$
Case "="," "
imagemapword$=nil$
Case Chr(34),Chr(39);quotes
If imagemapword$<>nil$
thishotspot[thishotspots%]command$=imagemapword$
Exit
EndIf
Default
imagemapword$=imagemapword$+imagemapchar$
End Select
Next
Case "target"
For loop% = loop%+1 To imagemapfilelinelength%
imagemapchar$=Mid$(imagemapfileline$,loop%,1)
Select imagemapchar$
Case "="," "
imagemapword$=nil$
Case Chr(34),Chr(39);quotes
If imagemapword$<>nil$
thishotspot[thishotspots%] arget$=imagemapword$
Exit
EndIf
Default
imagemapword$=imagemapword$+imagemapchar$
End Select
Next
End Select
Next
Wend
Return this
End Function
Function imagemapDestroy(this.imagemap)
;Purpose: Removes imagemap, hotspots, and image from memory
;Parameters: imagemap object
;Return: none
If this<>Null
For loop = 1 To hotspots%
If thishotspot[loop%]<>Null
Delete thishotspot[loop%]
EndIf
Next
If thisimage% FreeImage(thisimage)
Delete this
EndIf
End Function
Function imagemapUpdate()
;Purpose: Checks for mouse and hotspot events. called in main loop
;Parameters: none
;Return: none
this.imagemap=imagemapCurrent
If imagemapCurrentstate%
If thisimage DrawBlock(thisimage%,thisx,thisy)
;check mouse and hotspot events
For loop% = 1 To thishotspots%
If MouseX()>=thishotspot[loop%]coord%[0] And MouseX()<thishotspot[loop%]coord%[2]
If MouseY()>=thishotspot[loop%]coord%[1] And MouseY()<thishotspot[loop%]coord%[3]
Color 0,255,0
If MouseDown(1)
Color 255,0,0 ; do something
EndIf
Rect thishotspot[loop%]coord%[0],thishotspot[loop%]coord%[1],thishotspot[loop%]coord%[2]-thishotspot[loop%]coord%[0],thishotspot[loop%]coord%[3]-thishotspot[loop%]coord%[1],0
EndIf
EndIf
Next
EndIf
End Function
;DEMO ==========================================================================================
.MAIN
Graphics 512,256,16,2
SetBuffer(BackBuffer())
;load a imagemap
imagemapCurrent=imagemapLoad("test","test","test.jpg")
While Not KeyDown(1)
imagemapUpdate()
Flip()
Wend
imagemapDestroy(imagemapCurrent)
End
