jvcllaz: Fix resolution of html entities in TJvMarkupLabel and TJvMarkupViewer.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@8276 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/jvcllaz/examples/JvMarkup/MarkupDemo.lpi

@@ -24,7 +24,6 @@
     </PublishOptions>
     <RunParams>
       <FormatVersion Value="2"/>
-      <Modes Count="0"/>
     </RunParams>
     <RequiredPackages Count="3">
       <Item1>
@@ -62,6 +61,9 @@
       <UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
     </SearchPaths>
     <Linking>
+      <Debugging>
+        <DebugInfoType Value="dsDwarf2Set"/>
+      </Debugging>
       <Options>
         <Win32>
           <GraphicApplication Value="True"/>

components/jvcllaz/examples/JvMarkup/MarkupDemo.lpr

@@ -14,7 +14,7 @@ uses
 
 begin
   RequireDerivedFormResource := True;
-  Application.Scaled := True;
+  Application.Scaled:=True;
   Application.Initialize;
   Application.CreateForm(TMainForm, MainForm);
   Application.Run;

components/jvcllaz/examples/JvMarkup/main.lfm

@@ -7,7 +7,7 @@ object MainForm: TMainForm
   ClientHeight = 519
   ClientWidth = 740
   OnCreate = FormCreate
-  LCLVersion = '2.1.0.0'
+  LCLVersion = '2.3.0.0'
   inline SynEdit1: TSynEdit
     Left = 0
     Height = 322
@@ -456,6 +456,7 @@ object MainForm: TMainForm
       '<font color="blue">blue</font>'
       '<br><font size="6">small text</font> and <font size="20">large</font> text'
       '<br>A different font face: <font face="Times" size="14">Times</font>'
+      '<br>HTML entities: &amp; &trade; &radic;&alpha; &beta; &gamma; &delta; 90&deg;'
       '<br>Subscripts and superscripts are not supported:'
       '10 cm<sup>3</sup> H<sub>2</sub>O                      '
     )
@@ -570,7 +571,7 @@ object MainForm: TMainForm
         Left = 4
         Height = 19
         Top = 0
-        Width = 99
+        Width = 97
         BorderSpacing.Left = 4
         BorderSpacing.Bottom = 4
         Caption = 'Markup Viewer'
@@ -584,10 +585,10 @@ object MainForm: TMainForm
         AnchorSideLeft.Side = asrBottom
         AnchorSideTop.Control = RbMarkupViewer
         AnchorSideTop.Side = asrCenter
-        Left = 119
+        Left = 117
         Height = 19
         Top = 0
-        Width = 92
+        Width = 90
         BorderSpacing.Left = 16
         Caption = 'Markup Label'
         OnChange = RbMarkupLabelChange
@@ -598,7 +599,7 @@ object MainForm: TMainForm
   object SynHTMLSyn1: TSynHTMLSyn
     DefaultFilter = 'HTML Document (*.htm,*.html)|*.htm;*.html'
     Enabled = False
-    left = 456
-    top = 192
+    Left = 456
+    Top = 192
   end
 end

components/jvcllaz/examples/JvMarkup/main.pas

@@ -54,11 +54,13 @@ end;
 procedure TMainForm.RbMarkupViewerChange(Sender: TObject);
 begin
   JvMarkupViewer1.Visible := RbMarkupViewer.Checked;
+  JvMarkupLabel1.Visible := not RbMarkupViewer.Checked;
 end;
 
 procedure TMainForm.RbMarkupLabelChange(Sender: TObject);
 begin
   JvMarkupLabel1.Visible := RbMarkupLabel.Checked;
+  JvMarkupViewer1.Visible := not RbMarkupLabel.Checked;
 end;
 
 procedure TMainForm.SynEdit1Change(Sender: TObject);

components/jvcllaz/run/JvJans/jvmarkupcommon.pas

@@ -38,6 +38,7 @@ type
   TJvHTMLElement = class(TObject)
   private
     FFontSize: Integer;
+    FNoEntText: string;
     FText: string;
     FFontName: string;
     FFontStyle: TFontStyles;
@@ -61,7 +62,9 @@ type
     procedure SetBreakLine(const Value: Boolean);
   public
     procedure Breakup(ACanvas: TCanvas; Available: Integer);
+    class function FixHTMLEntities(const S: String): String;
     property Text: string read FText write SetText;
+    property NoEntText: String read FNoEntText;
     property SolText: string read FSolText write SetSolText;
     property EolText: string read FEolText write SetEolText;
     property FontName: string read FFontName write SetFontName;
@@ -89,6 +92,9 @@ type
 
 implementation
 
+uses
+  StrUtils, htmldefs;
+
 //=== { TJvHTMLElement } =====================================================
 
 procedure TJvHTMLElement.Breakup(ACanvas: TCanvas; Available: Integer);
@@ -101,7 +107,7 @@ begin
   ACanvas.Font.Style := FontStyle;
   ACanvas.Font.Color := FontColor;
   if SolText = '' then
-    S := Text
+    S := FNoEntText
   else
     S := EolText;
   if ACanvas.TextWidth(S) <= Available then
@@ -125,6 +131,29 @@ begin
   end;
 end;
 
+class function TJvHTMLElement.FixHTMLEntities(const S: String): String;
+var
+  ent: string;
+  wch: widechar = #0;
+  p1, p2: Integer;
+begin
+  Result := S;
+  p1 := pos('&', Result);
+  while p1 > 0 do begin
+    p2 := posex(';', Result, p1);
+    if p2 > 0 then
+    begin
+      ent := Copy(Result, p1+1, p2-p1-1);
+      if ResolveHTMLEntityReference(widestring(ent), wch) then
+      begin
+        ent := Copy(Result, p1, p2-p1+1);
+        Result := StringReplace(Result, ent, UTF8Encode(wch), [rfReplaceAll])
+      end;
+    end;
+    p1 := posex('&', Result, p1+1);
+  end;
+end;
+
 procedure TJvHTMLElement.SetAscent(const Value: Integer);
 begin
   FAscent := Value;
@@ -173,6 +202,7 @@ end;
 procedure TJvHTMLElement.SetText(const Value: string);
 begin
   FText := Value;
+  FNoEntText := FixHTMLEntities(FText);
 end;
 
 procedure TJvHTMLElement.SetWidth(const Value: Integer);

components/jvcllaz/run/JvJans/jvmarkuplabel.pas

@@ -423,7 +423,7 @@ end;
 procedure TJvMarkupLabel.RenderHTML;
 var
   R: TRect;
-  I, C, X, Y: Integer;
+  I, C, X, Y, W: Integer;
   ATotalWidth, AClientWidth, ATextWidth, BaseLine: Integer;
   iSol, iEol, PendingCount, MaxHeight, MaxAscent: Integer;
   El: TJvHTMLElement;
@@ -517,8 +517,9 @@ begin
       end;
       if El.SolText <> '' then
       begin
-        ATotalWidth := ATotalWidth - Canvas.TextWidth(El.SolText) - 5;
-        ATextWidth := ATextWidth + Canvas.TextWidth(El.SolText);
+        W := Canvas.TextWidth(El.SolText);
+        ATotalWidth := ATotalWidth - W - 5;
+        ATextWidth := ATextWidth + W;
         if El.EolText = '' then
         begin
           if I >= C - 1 then

components/jvcllaz/run/JvJans/jvmarkupviewer.pas

@@ -159,7 +159,7 @@ begin
   for I := 0 to C - 1 do
   begin
     Element := TJvHTMLElement(FElementStack.Items[I]);
-    s := Element.Text;
+    s := Element.NoEntText;
     Canvas.Font.Name := Element.FontName;
     Canvas.Font.Size := Element.FontSize;
     Canvas.Font.Style := Element.FontStyle;