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FileViewer.pb
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FileViewer.pb
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;--------------------------------------------------------------------------------------------
; Copyright (c) Fantaisie Software. All rights reserved.
; Dual licensed under the GPL and Fantaisie Software licenses.
; See LICENSE and LICENSE-FANTAISIE in the project root for license information.
;--------------------------------------------------------------------------------------------
Structure FileViewer
FileName$; to compare to newly opened files..
Gadget.i ; scrollarea or editor.. this value is only needed for resizing
Image.i ; loaded image if any
EndStructure
Global NewList FileViewer.FileViewer()
UseJPEGImageDecoder()
UsePNGImageDecoder()
UseTGAImageDecoder()
Global FileViewerOpen
Procedure FileViewer_UpdateButtonStates()
count = ListSize(FileViewer())
If count = 0
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Close, 1)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, 1)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, 1)
Else
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Close, 0)
index = ListIndex(FileViewer())
If count = 1
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, 1)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, 1)
ElseIf index = 0
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, 1)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, 0)
ElseIf index = count-1
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, 0)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, 1)
Else
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, 0)
DisableToolBarButton(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, 0)
EndIf
EndIf
EndProcedure
Procedure ResizeFileViewer()
ResizeGadget(#GADGET_FileViewer_Panel, 0, ToolbarTopOffset, WindowWidth(#WINDOW_FileViewer), WindowHeight(#WINDOW_FileViewer)-ToolbarHeight-StatusBarHeight)
PanelWidth = GetPanelWidth(#GADGET_FileViewer_Panel)
PanelHeight = GetPanelHeight(#GADGET_FileViewer_Panel)
ForEach FileViewer()
If FileViewer()\Gadget
ResizeGadget(FileViewer()\Gadget, 0, 0, PanelWidth, PanelHeight)
EndIf
Next FileViewer()
EndProcedure
Procedure OpenFileViewerWindow()
If IsWindow(#WINDOW_FileViewer) = 0
; TODO: Something is wrong here with the PB_OpenWindow3_DEBUG call because it
; complains about the ParentID not being valid when it clearly is.
; This happened only with AllocationPreference set to high addresses first (Windows x64)
;
DisableDebugger
If OpenWindow(#WINDOW_FileViewer, FileViewerX, FileViewerY, FileViewerWidth, FileViewerHeight, Language("FileViewer","Title"), #PB_Window_SystemMenu|#PB_Window_SizeGadget|#PB_Window_MinimizeGadget|#PB_Window_MaximizeGadget|#PB_Window_Invisible, WindowID(#WINDOW_Main))
EnableDebugger
SmartWindowRefresh(#WINDOW_FileViewer, 1)
If CreateToolBar(#TOOLBAR_FileViewer, WindowID(#WINDOW_FileViewer))
ToolBarImageButton(#MENU_FileViewer_Open, ImageID(#IMAGE_FileViewer_Open))
ToolBarImageButton(#MENU_FileViewer_Close, ImageID(#IMAGE_FileViewer_Close))
ToolBarSeparator()
ToolBarImageButton(#MENU_FileViewer_Previous, ImageID(#IMAGE_FileViewer_Left))
ToolBarImageButton(#MENU_FileViewer_Next, ImageID(#IMAGE_FileViewer_Right))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Open, Language("FileViewer","Open"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Close, Language("FileViewer","Close"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, Language("FileViewer","Previous"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, Language("FileViewer","Next"))
EndIf
If CreateStatusBar(#STATUSBAR_FileViewer, WindowID(#WINDOW_FileViewer))
AddStatusBarField(#PB_Ignore)
EndIf
PanelGadget(#GADGET_FileViewer_Panel, 0, ToolbarTopOffset, FileViewerWidth, FileViewerHeight-ToolbarHeight-StatusBarHeight)
CloseGadgetList()
EnableGadgetDrop(#GADGET_FileViewer_Panel, #PB_Drop_Files, #PB_Drag_Copy)
EnableWindowDrop(#WINDOW_FileViewer, #PB_Drop_Files, #PB_Drag_Copy)
EnsureWindowOnDesktop(#WINDOW_FileViewer)
If FileViewerMaximize
ShowWindowMaximized(#WINDOW_FileViewer)
Else
HideWindow(#WINDOW_FileViewer, 0)
EndIf
ResizeFileViewer()
FileViewer_UpdateButtonStates()
EndIf
Else
SetWindowForeground(#WINDOW_FileViewer)
EndIf
EndProcedure
Procedure IsBinaryFile(*Buffer, Length)
; Check if the Data is text only or binary (search for bytes <= 30, except cr,lf,tab)
; Note: we use a binary count as old PB file used a zero char to separate the bottom options from the real code
; Also JaPBe uses some similar trick.
;
BinaryCount = 0
IsBinary = 0
*Pointer.Ascii = *Buffer
While *Pointer < *Buffer+Length
If *Pointer\a < 32 And *Pointer\a <> 10 And *Pointer\a <> 13 And *Pointer\a <> 9
BinaryCount + 1
If BinaryCount > 10
IsBinary = 1
Break
EndIf
EndIf
*Pointer + 1
Wend
ProcedureReturn IsBinary
EndProcedure
Procedure FileViewer_OpenFile(Filename$)
AddTools_RunFileViewer = 1 ; to tell if some tool has been executed
AddTools_File$ = FileName$
Ext$ = LCase(GetExtensionPart(FileName$))
AddTools_Execute(#TRIGGER_FileViewer_Special, 0) ; special file tools have highest priority
If AddTools_RunFileViewer
AddTools_Execute(#TRIGGER_FileViewer_All, 0)
EndIf
If AddTools_RunFileViewer
If Ext$ <> "bmp" And Ext$ <> "png" And Ext$ <> "jpg" And Ext$ <> "jpeg" And Ext$ <> "tga" And Ext$ <> "ico" And Ext$ <> "txt"
AddTools_Execute(#TRIGGER_FileViewer_Unknown, 0)
EndIf
EndIf
If AddTools_RunFileViewer = 0 ; stop if a tool has been run
ProcedureReturn
EndIf
SizeMB.f = FileSize(FileName$)/(1024*1024)
If SizeMB > 10 ; = 10 mb is the max size handled by file viewer, or it will take forever to display in our EditorGadget() based hex viewer
MessageRequester(#ProductName$, Language("FileViewer","SizeError"), #FLAG_Error|#PB_MessageRequester_Ok)
ProcedureReturn
ElseIf SizeMB > 4 ; = 4 mb check for large files which might take long to load
If MessageRequester(#ProductName$, Language("FileViewer","SizeWarning")+" ("+StrF(SizeMB, 1)+" MB)"+#NewLine+Language("FileViewer","SizeQuestion"), #FLAG_Warning|#PB_MessageRequester_YesNo) = #PB_MessageRequester_No
ProcedureReturn
EndIf
EndIf
; check if window is open
;
If IsWindow(#WINDOW_FileViewer) = 0
OpenFileViewerWindow()
Else
SetWindowForeground(#WINDOW_FileViewer)
EndIf
; check if this file was already loaded
;
Found = 0
ForEach FileViewer()
If LCase(FileViewer()\FileName$) = LCase(FileName$)
Found = 1
Break
EndIf
Next FileViewer()
If Found = 1
SetGadgetState(#GADGET_FileViewer_Panel, ListIndex(FileViewer()))
StatusBarText(#STATUSBAR_FileViewer, 0, FileName$)
Else
; find out if it is an image file..
If Ext$ = "bmp" Or Ext$ = "png" Or Ext$ = "jpg" Or Ext$ = "jpeg" Or Ext$ = "tga" Or Ext$ = "ico"
Image = LoadImage(#PB_Any, FileName$)
If Image
LastElement(FileViewer())
AddElement(FileViewer())
FileViewer()\FileName$ = FileName$
FileViewer()\Image = Image
OpenGadgetList(#GADGET_FileViewer_Panel)
AddGadgetItem(#GADGET_FileViewer_Panel, -1, GetFilePart(FileName$))
FileViewer()\Gadget = ScrollAreaGadget(#PB_Any, 0, 0, GetPanelWidth(#GADGET_FileViewer_Panel), GetPanelHeight(#GADGET_FileViewer_Panel), ImageWidth(Image), ImageHeight(Image), 10, #PB_ScrollArea_Center)
ImageGadget = ImageGadget(#PB_Any, 0, 0, ImageWidth(Image), ImageHeight(Image), ImageID(Image))
EnableGadgetDrop(ImageGadget, #PB_Drop_Files, #PB_Drag_Copy)
CloseGadgetList()
CloseGadgetList()
Else
MessageRequester(#ProductName$, Language("FileStuff","MiscLoadError"), #FLAG_Error)
EndIf
CompilerIf #CompileWindows ; the gtk2 is not working well enough on all machines
ElseIf Ext$ = "html" Or Ext$ = "htm"
LastElement(FileViewer())
AddElement(FileViewer())
FileViewer()\FileName$ = FileName$
OpenGadgetList(#GADGET_FileViewer_Panel)
AddGadgetItem(#GADGET_FileViewer_Panel, -1, GetFilePart(FileName$))
FileViewer()\Gadget = WebGadget(#PB_Any, 0, 0, GetPanelWidth(#GADGET_FileViewer_Panel), GetPanelHeight(#GADGET_FileViewer_Panel), "file://" + FileName$)
CloseGadgetList()
CompilerEndIf
Else
If ReadFile(#FILE_FileViewer, FileName$)
Length = Lof(#FILE_FileViewer)
If Length > 0
*Buffer = AllocateMemory(Length)
EndIf
If *Buffer Or Length = 0
; add the editorgadget and prepare it
;
LastElement(FileViewer())
AddElement(FileViewer())
FileViewer()\FileName$ = FileName$
OpenGadgetList(#GADGET_FileViewer_Panel)
AddGadgetItem(#GADGET_FileViewer_Panel, -1, GetFilePart(FileName$))
FileViewer()\Gadget = ScintillaGadget(#PB_Any, 0, 0, GetPanelWidth(#GADGET_FileViewer_Panel), GetPanelHeight(#GADGET_FileViewer_Panel), #Null)
CloseGadgetList()
ScintillaSendMessage(FileViewer()\Gadget, #SCI_USEPOPUP, 1, 0) ; use the scintilla popup
ScintillaSendMessage(FileViewer()\Gadget, #SCI_SETMARGINWIDTHN, 0, 0)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_SETMARGINWIDTHN, 1, 0)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_STYLESETFONT, #STYLE_DEFAULT, ToAscii(EditorFontName$))
ScintillaSendMessage(FileViewer()\Gadget, #SCI_STYLESETSIZE, #STYLE_DEFAULT, EditorFontSize)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_STYLECLEARALL, 0, 0)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_SETCODEPAGE, 0, 0)
EnableGadgetDrop(FileViewer()\Gadget, #PB_Drop_Files, #PB_Drag_Copy)
If Length > 0
; ok, now read the file
;
ReadData(#FILE_FileViewer, *Buffer, Length)
If IsBinaryFile(*Buffer, Length) = #False
ChangeNewLineType(@*Buffer, @Length, #DEFAULT_NewLineType)
Text$ = PeekS(*Buffer, Length, #PB_Ascii)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_SETTEXT, 0, ToAscii(Text$))
Else
*Buffer2 = AllocateMemory(((Length + 16) * 78) / 8) ; Add 16 as the last 16 char block line can be only one character length
*Pointer2 = *Buffer2
CopyMemoryString(@"", @*Pointer2)
; display a nice hex view
;
*Pointer.Ascii = *Buffer
Repeat
HexData$ = RSet(Hex(*Pointer-*Buffer), 8, "0") + " "
String$ = " "
For i = 0 To $F
If *Pointer > *Buffer+Length
HexData$ = LSet(HexData$, 58, " ")
Break
EndIf
HexData$ + RSet(Hex(*Pointer\a, #PB_Byte), 2, "0") + " "
If *Pointer\a < 32
String$ + "."
Else
String$ + Chr(*Pointer\a)
EndIf
*Pointer + 1
Next i
CopyMemoryString(HexData$)
CopyMemoryString(String$)
CopyMemoryString(#NewLine)
Until *Pointer > *Buffer+Length
Text$ = PeekS(*Buffer2, (*Pointer2-*Buffer2) / #CharSize)
ScintillaSendMessage(FileViewer()\Gadget, #SCI_SETTEXT, 0, ToAscii(Text$))
FreeMemory(*Buffer2)
EndIf
FreeMemory(*Buffer)
EndIf
SetGadgetAttribute(FileViewer()\Gadget, #PB_Editor_ReadOnly, 1)
Else
MessageRequester(#ProductName$, Language("FileStuff","MiscLoadError"), #FLAG_Error)
EndIf
CloseFile(#FILE_FileViewer)
Else
MessageRequester(#ProductName$, Language("FileStuff","MiscLoadError"), #FLAG_Error)
EndIf
EndIf
SetGadgetState(#GADGET_FileViewer_Panel, CountGadgetItems(#GADGET_FileViewer_Panel)-1)
If LastElement(FileViewer())
StatusBarText(#STATUSBAR_FileViewer, 0, FileViewer()\FileName$)
EndIf
EndIf
ResizeFileViewer()
FileViewer_UpdateButtonStates()
EndProcedure
Procedure FileViewerWindowEvents(EventID)
If EventID = #PB_Event_GadgetDrop Or EventID = #PB_Event_WindowDrop
Files$ = EventDropFiles()
Count = CountString(Files$, Chr(10))+1
For i = 1 To Count
File$ = StringField(Files$, i, Chr(10))
If File$ <> "" And FileSize(File$) <> -2 ; no directories!
FileViewer_OpenFile(File$)
EndIf
Next i
ElseIf EventID = #PB_Event_Menu
Select EventMenu()
Case #MENU_FileViewer_Open
Pattern$ = Language("FileViewer","Pattern")
CompilerIf #CompileWindows = 0
; have to remove the .ico pattern...
Pattern$ = RemoveString(Pattern$, ", *.ico")
Pattern$ = RemoveString(Pattern$, ",*.ico")
Pattern$ = RemoveString(Pattern$, ";*.ico")
CompilerEndIf
FileName$ = OpenFileRequester(Language("FileStuff","OpenFileTitle"), FileViewerPath$, AddTools_PatternStrings$ + Pattern$, FileViewerPattern, #PB_Requester_MultiSelection)
If FileName$
FileViewerPattern = SelectedFilePattern()
FileViewerPath$ = GetPathPart(FileName$)
While FileName$
FileViewer_OpenFile(FileName$)
FileName$ = NextSelectedFileName()
Wend
EndIf
Case #MENU_FileViewer_Close
If CountGadgetItems(#GADGET_FileViewer_Panel) > 0
SelectElement(FileViewer(), GetGadgetState(#GADGET_FileViewer_Panel))
If FileViewer()\Image
FreeImage(FileViewer()\Image)
EndIf
If ListIndex(FileViewer()) = 0
DeleteElement(FileViewer())
FirstElement(FileViewer())
Else
DeleteElement(FileViewer())
EndIf
RemoveGadgetItem(#GADGET_FileViewer_Panel, GetGadgetState(#GADGET_FileViewer_Panel))
If ListSize(FileViewer()) > 0
StatusBarText(#STATUSBAR_FileViewer, 0, FileViewer()\FileName$)
Else
StatusBarText(#STATUSBAR_FileViewer, 0, "")
EndIf
EndIf
FileViewer_UpdateButtonStates()
Case #MENU_FileViewer_Previous
If ListSize(FileViewer()) > 0
index = GetGadgetState(#GADGET_FileViewer_Panel)
If index = 0
SetGadgetState(#GADGET_FileViewer_Panel, CountGadgetItems(#GADGET_FileViewer_Panel)-1)
LastElement(FileViewer())
Else
SetGadgetState(#GADGET_FileViewer_Panel, index-1)
SelectElement(FileViewer(), index-1)
EndIf
StatusBarText(#STATUSBAR_FileViewer, 0, FileViewer()\FileName$)
EndIf
FileViewer_UpdateButtonStates()
Case #MENU_FileViewer_Next
If ListSize(FileViewer()) > 0
index = GetGadgetState(#GADGET_FileViewer_Panel)
If index = CountGadgetItems(#GADGET_FileViewer_Panel)-1
SetGadgetState(#GADGET_FileViewer_Panel, 0)
FirstElement(FileViewer())
Else
SetGadgetState(#GADGET_FileViewer_Panel, index+1)
SelectElement(FileViewer(), index+1)
EndIf
StatusBarText(#STATUSBAR_FileViewer, 0, FileViewer()\FileName$)
EndIf
FileViewer_UpdateButtonStates()
EndSelect
ElseIf EventID = #PB_Event_Gadget
If EventGadget() = #GADGET_FileViewer_Panel
If SelectElement(FileViewer(), GetGadgetState(#GADGET_FileViewer_Panel))
StatusBarText(#STATUSBAR_FileViewer, 0, FileViewer()\FileName$)
EndIf
FileViewer_UpdateButtonStates()
EndIf
ElseIf EventID = #PB_Event_SizeWindow
ResizeFileViewer()
ElseIf EventID = #PB_Event_CloseWindow
If MemorizeWindow And IsWindowMinimized(#WINDOW_FileViewer) = 0
FileViewerMaximize = IsWindowMaximized(#WINDOW_FileViewer)
If FileViewerMaximize = 0
FileViewerX = WindowX(#WINDOW_FileViewer)
FileViewerY = WindowY(#WINDOW_FileViewer)
FileViewerWidth = WindowWidth(#WINDOW_FileViewer)
FileViewerHeight = WindowHeight(#WINDOW_FileViewer)
EndIf
EndIf
ForEach FileViewer()
If FileViewer()\Image
FreeImage(FileViewer()\Image)
EndIf
Next FileViewer()
ClearList(FileViewer())
CloseWindow(#WINDOW_FileViewer)
EndIf
EndProcedure
Procedure UpdateFileViewerWindow()
SetWindowTitle(#WINDOW_FileViewer, Language("FileViewer","Title"))
; re-create the toolbar to apply theme changes
FreeToolBar(#TOOLBAR_FileViewer)
If CreateToolBar(#TOOLBAR_FileViewer, WindowID(#WINDOW_FileViewer))
ToolBarImageButton(#MENU_FileViewer_Open, ImageID(#IMAGE_FileViewer_Open))
ToolBarImageButton(#MENU_FileViewer_Close, ImageID(#IMAGE_FileViewer_Close))
ToolBarSeparator()
ToolBarImageButton(#MENU_FileViewer_Previous, ImageID(#IMAGE_FileViewer_Left))
ToolBarImageButton(#MENU_FileViewer_Next, ImageID(#IMAGE_FileViewer_Right))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Open, Language("FileViewer","Open"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Close, Language("FileViewer","Close"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Previous, Language("FileViewer","Previous"))
ToolBarToolTip(#TOOLBAR_FileViewer, #MENU_FileViewer_Next, Language("FileViewer","Next"))
EndIf
FileViewer_UpdateButtonStates()
EndProcedure