Question to sqlite and listicon gadget

[infratec]

Hi,

1. you get no real time values when the debugger is enabled.
2. try to hide the gadget before adding and show it again after adding.

Windows always refreshes the ListIcon when an entry is added, this costs time.
If this works, it is also possible (via API) to disable the refresh of the gadget without hiding it.

Bernd

[mk-soft]

I have a little more time

Update
- Added FitColumnWidth

Code: Select all

;-TOP

EnableExplicit

; ***************************************************************************************

; ShowDatabaseItems by mk-soft from 12.02.2017

Procedure GetTextWidth(Text.s, FontID.i = 0)
  Static image
  Protected result
  
  If Not image
    image = CreateImage(#PB_Any, 1, 1)
  EndIf
  
  If image And StartDrawing(ImageOutput(image))
    If FontID
      DrawingFont(FontID)
    EndIf
    result = TextWidth(Text)
    StopDrawing()
  EndIf
  ProcedureReturn result
EndProcedure

; ---------------------------------------------------------------------------------------

Procedure ClearGadgetColumns(Gadget)
  CompilerIf #PB_Compiler_Version <= 551
    ClearGadgetItems(Gadget)
    While GetGadgetItemText(Gadget, -1, 0)
      RemoveGadgetColumn(Gadget, 0)
    Wend
  CompilerElse
    RemoveGadgetColumn(Gadget, #PB_All)
  CompilerEndIf
EndProcedure

; ---------------------------------------------------------------------------------------

Procedure CountGadgetColumns(Gadget)
  Protected result
  CompilerIf #PB_Compiler_Version <= 551
    While GetGadgetItemText(Gadget, -1, result)
      result + 1
    Wend
  CompilerElse
    result = GetGadgetAttribute(Gadget, #PB_ListIcon_ColumnCount)
  CompilerEndIf
  ProcedureReturn result
EndProcedure

; ---------------------------------------------------------------------------------------

Procedure FitColumnWidth(Gadget, Column = #PB_All)
  Protected columns, rows, col, row, width, max, dx
  Static help_gadget
  
  CompilerIf #PB_Compiler_OS = #PB_OS_Windows
    If Column = #PB_All
      columns = CountGadgetColumns(Gadget) - 1
      For col = 0 To columns
        SendMessage_(GadgetID(Gadget), #LVM_SETCOLUMNWIDTH, col, #LVSCW_AUTOSIZE_USEHEADER)
      Next
    Else
      SendMessage_(GadgetID(Gadget), #LVM_SETCOLUMNWIDTH, Column, #LVSCW_AUTOSIZE_USEHEADER)
    EndIf
    
  CompilerElse
    rows = CountGadgetItems(Gadget) - 1
    dx = GetTextWidth("X", GetGadgetFont(Gadget))
    If Column = #PB_All
      columns = CountGadgetColumns(Gadget) - 1
      For col = 0 To columns
        For row = -1 To rows
          width = Len(GetGadgetItemText(Gadget, row, col))
          If width > max
            max = width
          EndIf
        Next
        width = max * dx + 4
        SetGadgetItemAttribute(Gadget, 0, #PB_ListIcon_ColumnWidth, width, col)
        width = 0
      Next
    Else
      For row = -1 To rows
        width = Len(GetGadgetItemText(Gadget, row, Column))
        If width > max
          max = width
        EndIf
      Next
      width = max * dx + 4
      SetGadgetItemAttribute(Gadget, 0, #PB_ListIcon_ColumnWidth, width, Column)
    EndIf
    
  CompilerEndIf
  
EndProcedure

Procedure ShowDatabaseRows(Gadget, DBase, Hide = #False)
  Protected result.i, columns.i, index.i, size.i, text.s
  
  Repeat
    If GadgetType(Gadget) <> #PB_GadgetType_ListIcon
      Break
    EndIf
    If Not IsDatabase(DBase)
      Break
    EndIf
    HideGadget(Gadget, Hide)
    ClearGadgetColumns(Gadget)
    columns = DatabaseColumns(DBase)
    For index = 0 To columns - 1
      text = DatabaseColumnName(DBase, index)
      size = GetTextWidth(text) + 12
      AddGadgetColumn(Gadget, index, text, size)
    Next
    While NextDatabaseRow(DBase)
      text = ""
      For index = 0 To columns - 1
        text + GetDatabaseString(DBase, index) + #LF$
      Next
      AddGadgetItem(Gadget, -1, text)
    Wend
    FinishDatabaseQuery(DBase)
    HideGadget(Gadget, #False)
    result = CountGadgetItems(Gadget)
  Until #True
  ProcedureReturn result
  
EndProcedure

; ***************************************************************************************

CompilerIf #PB_Compiler_IsMainFile
  
  ; Constant
  Enumeration ;Window
    #Main
  EndEnumeration
  
  Enumeration ; Menu
    #Menu
  EndEnumeration
  
  Enumeration ; MenuItems
    #MenuExitApplication
  EndEnumeration
  
  Enumeration ; Gadgets
    #List
    #Edit
  EndEnumeration
  
  Enumeration ; Statusbar
    #Status
  EndEnumeration
  
  ; Global Variable
  Global ExitApplication
  
  ; Functions
  
  UseSQLiteDatabase()
  
  Procedure CheckDatabaseUpdate(Database, Query$)
    Protected Result = DatabaseUpdate(Database, Query$)
    If Result = 0
      Debug DatabaseError()
    EndIf
    ProcedureReturn Result
  EndProcedure
  
  Procedure CreateDummyDatabase(DBase)
    If OpenDatabase(DBase, ":memory:", "", "")
      CheckDatabaseUpdate(DBase, "CREATE TABLE food (recid INTEGER PRIMARY KEY ASC, name CHAR(50), weight FLOAT)")
      CheckDatabaseUpdate(DBase, "INSERT INTO food (name, weight) VALUES ('apple', '10.005')")
      CheckDatabaseUpdate(DBase, "INSERT INTO food (name, weight) VALUES ('pear', '5.9')")
      CheckDatabaseUpdate(DBase, "INSERT INTO food (name, weight) VALUES ('banana', '20.35')")
    Else
      Debug "Can't open database !"
    EndIf
  EndProcedure
  
  Procedure UpdateWindow()
    Protected x, y, dx, dy, menu, status
    
    menu = MenuHeight()
    If IsStatusBar(#Status)
      status = StatusBarHeight(#Status)
    Else
      status = 0
    EndIf
    x = 0
    y = 0
    dx = WindowWidth(#Main)
    dy = WindowHeight(#Main) - menu - status
    ResizeGadget(#List, x, y, dx, dy)
  EndProcedure
  
  ; Main
  Procedure Main()
    Protected event, style, dx, dy, count
    
    style = #PB_Window_SystemMenu | #PB_Window_MinimizeGadget | #PB_Window_MaximizeGadget | #PB_Window_SizeGadget
    dx = 800
    dy = 600
    
    If OpenWindow(#Main, #PB_Ignore, #PB_Ignore, dx, dy, "Main", style)
      
      ; Menu
      CreateMenu(#Menu, WindowID(#Main))
      MenuTitle("Ablage")
      MenuItem(#MenuExitApplication, "Be&enden")
      
      CompilerIf #PB_Compiler_OS = #PB_OS_MacOS 
        ; Mac default menu
        If Not IsMenu(#Menu)
          CreateMenu(#Menu, WindowID(#Main))
        EndIf
        MenuItem(#PB_Menu_About, "")
        MenuItem(#PB_Menu_Preferences, "")
      CompilerEndIf
      
      ; Gadgets
      ListIconGadget(#List, 0, 0, dx, dy, "recid", 100)
      
      ; Statusbar
      CreateStatusBar(#Status, WindowID(#Main))
      AddStatusBarField(#PB_Ignore)
      
      UpdateWindow()
      
      ;-Test database
      CreateDummyDatabase(0)
      
      If DatabaseQuery(0, "SELECT * FROM food WHERE weight > 0")
      ;If DatabaseQuery(0, "SELECT * FROM sqlite_master")
        count = ShowDatabaseRows(#List, 0, #True)
        StatusBarText(#Status, 0, "Items: " + count)
      EndIf
      
      FitColumnWidth(#List)
      
      ; Main Loop
      Repeat
        event = WaitWindowEvent()
        Select event
          Case #PB_Event_Menu
            Select EventMenu()
                CompilerIf #PB_Compiler_OS = #PB_OS_MacOS
                  
                Case #PB_Menu_About
                  
                Case #PB_Menu_Preferences
                  
                Case #PB_Menu_Quit
                  ExitApplication = #True
                  
                CompilerEndIf
                
              Case #MenuExitApplication
                ExitApplication = #True
                
            EndSelect
            
          Case #PB_Event_Gadget
            Select EventGadget()
              Case #List
                
            EndSelect
            
          Case #PB_Event_SizeWindow
            Select EventWindow()
              Case #Main
                UpdateWindow()
                
            EndSelect
            
          Case #PB_Event_CloseWindow
            Select EventWindow()
              Case #Main
                ExitApplication = #True
                
            EndSelect
            
        EndSelect
        
      Until ExitApplication
      
    EndIf
    
  EndProcedure : Main()
  
  End
  
CompilerEndIf