Re: Indenting on the fly

Author

Message

David Kroll

Posted: 10/15/2003 22:30:33

Brilliant! That works perfectly!

Thanks for the help.

"Sergey Tkachenko" <svt@trichview.com> wrote in message

news:3f8da6d2$3@support.torry.net...

> Loaded RTF is not necessary has 0-th paragraph style (if "Allow adding

> styled dynamically" is set)

> I suggest the following code (again, it requires "Allow adding styled

> dynamically"setting)

> rtfStream := TStringStream.Create(oMessage.Text);

> try

> editor.Clear;

> if MessageType in [mtReply, mtForward] then

> begin

> //This is the top of the message

> editor.AddNL('', 0, 1);

> //This is the original message and will be indented

> editor.AddNL('---- Original Message ----', 0, 0);

> editor.AddNL('From: ' + oMessage.SenderAddress, 0, 0);

> editor.AddNL('Sent: ' + DateTimeToStr(oMessage.Timestamp), 0, 0);

> editor.AddNL('To: ' + GetRecipientString(oMessage), 0, 0);

> editor.AddNL('Subejct: ' + oMessage.Subject, 0, 0);

> editor.AddNL('', 0, 0);

> // disallowing LoadRTFFRomStream to use 0-th and 1st styles

> ParaStyleCount := editor.Style.ParaStyles.Count;

> editor.Style.ParaStyles[0].LeftIndent := -1000;

> editor.Style.ParaStyles[1].LeftIndent := -1000;

> // inserting RTF

> editor.LoadRTFFromStream(rtfStream);

> // restoring indents of 0-th and 1st styles

> editor.Style.ParaStyles[0].LeftIndent := 25;

> editor.Style.ParaStyles[1].LeftIndent := 0;

> // indenting loaded RTF

> for i := ParaStyleCount to editor.Style.ParaStyles.Count-1 do

> editor.Style.ParaStyles[i].LeftIndent :=

> editor.Style.ParaStyles[i].LeftIndent+25;

> end;

> editor.Format;

> finally

> rtfStream.Free;

> end;

> > Sergey,

> >

> > I got it to work, almost. The first two blank lines are style 1, the

> > original message is style 0. After loading the rtf, I call

editor.Format,

> > then set the LeftIndent of Style 0 to 25 and call editor.Format. This

> works

> > well, but I have one problem. If the rtf had areas that were indented,

> > those areas are put back to 25. For instance, if I reply to a message

> that

> > had been replied to, I should have something like:

> >

> > -- Original Message --

> > From:

> > Subject:

> >

> > Body of replied to message.

> >

> > -- Original Message --

> > From:

> > Subject:

> >

> > Body of Original message.

> >

> > Any suggestions?

> >

> > rtfStream := TStringStream.Create(oMessage.Text);

> > try

> > editor.Clear;

> > if MessageType in [mtReply, mtForward] then

> > begin

> > //This is the top of the message

> > editor.AddNL('', 0, 1);

> >

> > //This is the original message and will be indented

> > editor.AddNL('---- Original Message ----', 0, 0);

> > editor.AddNL('From: ' + oMessage.SenderAddress, 0, 0);

> > editor.AddNL('Sent: ' + DateTimeToStr(oMessage.Timestamp), 0, 0);

> > editor.AddNL('To: ' + GetRecipientString(oMessage), 0, 0);

> > editor.AddNL('Subejct: ' + oMessage.Subject, 0, 0);

> > editor.AddNL('', 0, 0);

> > end;

> > editor.LoadRTFFromStream(rtfStream);

> > editor.Format;

> >

> > //This indents the original message portion

> > if MessageType in [mtReply, mtForward] then

> > begin

> > editor.Style.ParaStyles[0].LeftIndent := 25;

> > editor.Format;

> > end;

> > finally

> > rtfStream.Free;

> > end;

> >

> > "Sergey Tkachenko" <svt@trichview.com> wrote in message

> > news:3f8d82db$2@support.torry.net...

> > > TRVStyle component (linked to this editor) contains collections of

text

> > > styles (defining text fonts, colors, etc.) and paragraph styles

> (defining

> > > paragraph alignments, indents, etc.). They are available as properties

> > > TextStyles and ParaStyles.

> > > You can edit these collections at run time or at design time.

> > > For example, you can define two text styles (for normal text and for

> bold

> > > text) and use their indices as the second parameter of AddNL.

> > > (NOTE: the second patameter of AddNL is an index in

> > editor.Style.TextStyles;

> > > editor.Style.ItemNo must not be used here, it is a completely

different

> > > value).

> > > Besides, you can define a paragraph style with the proper LeftIndent

and

> > use

> > > its index as the third parameter of AddNL.

> > >

> > > The main problem is identing text loaded from rtfStream.

> > > I can suggest the following solution:

> > > 1) Make sure that "Allow adding styles dynamically" is set in the

> > component

> > > editor for this TRichViewEdit (in Delphi, right click this

> TRichViewEdit,

> > > choose "Settings" in the context menu).

> > > 2) Make sure that TRVStyle component linked to this TRichViewEdit (as

> > > editor.Style) is not linked to any other TRichViewEdit

> > > 3) Store the number of paragraph styles before the RTF loading in a

> > > variable:

> > > ParaStyleCount := editor.Style.ParaStyles.Count;

> > > 4) LoadRTFFromStream will add paragraph styles in

> > > editor.Style.ParaStyles.Count. After loading, increase left indent of

> > these

> > > styles:

> > > for i := ParaStyleCount to editor.Style.ParaStyles.Count-1 do

> > > editor.Style.ParaStyles[i].LeftIndent :=

> > > editor.Style.ParaStyles[i].LeftIndent+30;

> > >

> > > That's all. Well, almost all. There may be a problem:

LoadRTFFromStream

> > may

> > > reuse some existing paragraph styles that is already in the collection

> > > instead of adding new styles (if some paragraph in RTF has the same

> > > attributes as existing paragraph styles).

> > > You can use a trick to avoid this:

> > > - after the step 3, temporary assign to existing paragraph styles some

> > > properties that cannot be in RTF. For example, set LeftIndent

to -1000:

> > > for i := 0 to ParaStyleCount-1 do

> > > editor.Style.ParaStyles[i].LeftIndent := -1000;

> > > - after the step 4, restore their left indents:

> > > for i := 0 to ParaStyleCount-1 do

> > > editor.Style.ParaStyles[i].LeftIndent := 0;

> > >

> > > > I am loading a TRichViewEdit and want to indent some text on the

fly.

> > > This

> > > > is for replying to a mail message, so the original message will be

> > > indented.

> > > > I'm not sure how to do this. Please see the code below.

> > >

> >