fpvviewer: Adds the possibility to force a text encoding when reading the file

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@2602 8e941d3f-bd1b-0410-a28a-d453659cc2b4

applications/fpvviewer/fpvv_mainform.lfm

@@ -1,10 +1,10 @@
 object frmFPVViewer: TfrmFPVViewer
   Left = 322
-  Height = 538
+  Height = 600
   Top = 143
   Width = 485
   Caption = 'Free Pascal Vectorial Viewer'
-  ClientHeight = 538
+  ClientHeight = 600
   ClientWidth = 485
   OnCreate = FormCreate
   OnDestroy = FormDestroy
@@ -67,10 +67,10 @@ object frmFPVViewer: TfrmFPVViewer
     AnchorSideBottom.Control = Owner
     AnchorSideBottom.Side = asrBottom
     Left = 0
-    Height = 410
-    Top = 128
+    Height = 448
+    Top = 152
     Width = 485
-    PageIndex = 1
+    PageIndex = 0
     Anchors = [akTop, akLeft, akRight, akBottom]
     TabOrder = 4
     TabStop = True
@@ -78,11 +78,15 @@ object frmFPVViewer: TfrmFPVViewer
     end
     object pageTreeData: TPage
       object TokensTreeView: TTreeView
+        AnchorSideTop.Control = btnSearchInTokens
+        AnchorSideTop.Side = asrBottom
         Left = 0
         Height = 378
         Top = 32
         Width = 485
         Align = alBottom
+        Anchors = [akTop, akLeft, akRight, akBottom]
+        BorderSpacing.Top = 7
         DefaultItemHeight = 18
         TabOrder = 0
       end
@@ -177,4 +181,59 @@ object frmFPVViewer: TfrmFPVViewer
     OnClick = Button2Click
     TabOrder = 10
   end
+  object Label4: TLabel
+    Left = 9
+    Height = 15
+    Top = 126
+    Width = 128
+    Caption = 'Force encoding on read:'
+    ParentColor = False
+  end
+  object comboEncoding: TComboBox
+    Left = 144
+    Height = 23
+    Top = 126
+    Width = 128
+    ItemHeight = 15
+    ItemIndex = 0
+    Items.Strings = (
+      'Read from the file'
+      'utf8'
+      'ansi'
+      'ucs2le'
+      'ucs2be'
+      'iso88591'
+      'iso88592'
+      'cp1250'
+      'cp1251'
+      'cp1252'
+      'cp1253'
+      'cp1254'
+      'cp1255'
+      'cp1256'
+      'cp1257'
+      'cp1258'
+      'cp437'
+      'cp850'
+      'cp852'
+      'cp866'
+      'cp874'
+      'cp936'
+      'cp950'
+      'cp949'
+      'cp932'
+      'koi8'
+    )
+    Style = csDropDownList
+    TabOrder = 11
+    Text = 'Read from the file'
+  end
+  object labelFileEncoding: TLabel
+    Left = 278
+    Height = 15
+    Top = 130
+    Width = 74
+    Caption = 'File encoding:'
+    ParentColor = False
+  end
 end

applications/fpvviewer/fpvv_mainform.pas

@@ -21,10 +21,13 @@ type
     Button2: TButton;
     btnSearchInTokens: TButton;
     buttonRenderingTest: TButton;
+    comboEncoding: TComboBox;
     editSearchInTokens: TEdit;
     editFileName: TFileNameEdit;
     Label2: TLabel;
     Label3: TLabel;
+    Label4: TLabel;
+    labelFileEncoding: TLabel;
     notebook: TNotebook;
     pageViewer: TPage;
     pageTreeData: TPage;
@@ -84,8 +87,16 @@ begin
 
   Vec := TvVectorialDocument.Create;
   try
+    // If we desire, force a encoding for the read operation
+    if comboEncoding.ItemIndex > 0 then
+      Vec.ForcedEncodingOnRead := comboEncoding.Text
+    else Vec.ForcedEncodingOnRead := '';
+
     Vec.ReadFromFile(editFileName.FileName);
 
+    // Show document properties
+    labelFileEncoding.Caption := 'File encoding: ' + Vec.Encoding;
+
     // We need to be robust, because sometimes the document size won't be given
     // also give up drawing everything if we need more then 4MB of RAM for the image
     // and also give some space in the image to allow for negative coordinates