PureBasicIDE/FileViewer.pb · PureBasic/PureBASIC

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PureBasicIDE

FileViewer.pb

FileViewer.pb 18.62 KB

; --------------------------------------------------------------------------------------------
; 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
 
 CompilerIf #CompileMac
 If OSVersion() >= #PB_OS_MacOSX_10_14
 ; Fix Toolbar style from titlebar to expanded (Top Left)
 #NSWindowToolbarStyleExpanded = 1
 CocoaMessage(0, WindowID(#WINDOW_FileViewer), "setToolbarStyle:", #NSWindowToolbarStyleExpanded)
 EndIf
 CompilerEndIf
 
 SmartWindowRefresh(#WINDOW_FileViewer, 1)
 
 CompilerIf #CompileMac
 flags = #PB_ToolBar_Large
 CompilerElse
 flags = 0
 CompilerEndIf
 
 If CreateToolBar(#TOOLBAR_FileViewer, WindowID(#WINDOW_FileViewer), flags)
 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,ドル 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,ドル 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,ドル 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,ドル 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,ドル Language("FileStuff","MiscLoadError"), #FLAG_Error)
 EndIf
 
 CloseFile(#FILE_FileViewer)
 Else
 MessageRequester(#ProductName,ドル 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,ドル Chr(10))+1
 
 For i = 1 To Count
 File$ = StringField(Files,ドル 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,ドル ", *.ico")
 Pattern$ = RemoveString(Pattern,ドル ",*.ico")
 Pattern$ = RemoveString(Pattern,ドル ";*.ico")
 CompilerEndIf
 
 FileName$ = OpenFileRequester(Language("FileStuff","OpenFileTitle"), FileViewerPath,ドル AddTools_PatternStrings$ + Pattern,ドル 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

一键复制编辑原始数据按行查看历史

mk-soft-65 提交于 2023年04月21日 00:07 +08:00 . Some PB-IDE fixed for macOS (#226)

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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
 
 CompilerIf #CompileMac
 If OSVersion() >= #PB_OS_MacOSX_10_14
 ; Fix Toolbar style from titlebar to expanded (Top Left)
 #NSWindowToolbarStyleExpanded = 1
 CocoaMessage(0, WindowID(#WINDOW_FileViewer), "setToolbarStyle:", #NSWindowToolbarStyleExpanded)
 EndIf
 CompilerEndIf
 
 SmartWindowRefresh(#WINDOW_FileViewer, 1)
 
 CompilerIf #CompileMac
 flags = #PB_ToolBar_Large
 CompilerElse
 flags = 0
 CompilerEndIf
 
 If CreateToolBar(#TOOLBAR_FileViewer, WindowID(#WINDOW_FileViewer), flags)
 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,ドル 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,ドル 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,ドル 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,ドル 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,ドル Language("FileStuff","MiscLoadError"), #FLAG_Error)
 EndIf
 
 CloseFile(#FILE_FileViewer)
 Else
 MessageRequester(#ProductName,ドル 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,ドル Chr(10))+1
 
 For i = 1 To Count
 File$ = StringField(Files,ドル 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,ドル ", *.ico")
 Pattern$ = RemoveString(Pattern,ドル ",*.ico")
 Pattern$ = RemoveString(Pattern,ドル ";*.ico")
 CompilerEndIf
 
 FileName$ = OpenFileRequester(Language("FileStuff","OpenFileTitle"), FileViewerPath,ドル AddTools_PatternStrings$ + Pattern,ドル 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

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简介

PureBasic是由Fantaisie Software所开发的商用BASIC程序语言及集成开发环境。特点是语法简单直接,不依赖运行时库,因此能编译出相当小巧的程序,包含命令列或GUI执行档、DLL等。而且不使用各系统的API,所以有高度的跨平台特性,支持Windows 32/64位元、Linux 32/64位元、Mac OS X、Amiga。

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