De-serializing a wxFont for a pdf file fails.

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dkaip
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De-serializing a wxFont for a pdf file fails.

Post by dkaip » Sun Jun 24, 2018 7:02 pm

Hi, "nothing happens" means that in pdf page file the text have the default fonts, not the chosen fonts.
I have serialize a font as wxString and then de-serializing with wxFromString, i am trying to register and set font for pdf document, but nothing happens. What i am doing wrong?
Thank's
Jim

if(!font.IsNull())
{
wxFont f;
wxFromString(font,&f);
wxPdfFontManager* fm = wxPdfFontManager::GetFontManager();
fm->RegisterFont(font);
aPDFfile.SetFont(f);
}
Last edited by dkaip on Mon Jun 25, 2018 10:17 am, edited 3 times in total.

utelle
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Re: De-serializing a wxFont for a pdf file fails.

Post by utelle » Mon Jun 25, 2018 7:29 am

dkaip wrote:I have serialize a font as wxString and then de-serializing with wxFromString,
Have you tested and verified that you get the same font on deserializing to a wxFont instance as the one you used to serialize?
dkaip wrote:i am trying to register and set font for pdf document, but nothing happens. What i am doing wrong?
Please explain "nothing happens". What do you expect to happen?
dkaip wrote:

Code: Select all

    if(!font.IsNull())
    {
        wxFont f;
        wxFromString(font,&f);
        wxPdfFontManager* fm = wxPdfFontManager::GetFontManager();
        fm->RegisterFont(font);
        aPDFfile.SetFont(f);
    }
In your code snippet you don't use the font f to write any text to the resulting PDF. To actually "see" anything in the PDF you have to add a page first, and then to add some text.

Have you tested that font f was correctly initialized? Do you get any warning/error from wxPdfDocument? Method SetFont returns a boolean value telling you whether setting the font succeeded or not. Please check the return value of SetFont.

Regards,

Ulrich

dkaip
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Filthy Rich wx Solver
Posts: 215
Joined: Wed Jan 20, 2010 1:15 pm

Re: De-serializing a wxFont for a pdf file fails.

Post by dkaip » Mon Jun 25, 2018 10:12 am

In code below i take ...
wxPdfFontManagerBase::RegisterFont: Font file 'Sans 40' does not exist or is not readable.
But then shows wxMessageBox("aaaa");, that means SetFont(f) returns true.
Sans 40 exists in my linux system, that i have take from with

Code: Select all

 wxFontData data;
wxFontDialog fnt(this, data);
if ( fnt.ShowModal() != wxID_OK )return;
data = fnt.GetFontData();
font=wxToString(data.GetChosenFont());
---------------
if(!font.IsNull())
    {
        wxFont f;
        wxFromString(font,&f);
        wxPdfFontManager* fm = wxPdfFontManager::GetFontManager();
        fm->RegisterFont(font);
        if(aPDFfile.SetFont(f))wxMessageBox("aaaa");
    }
aPDFfile.PrintChapter(MyText);
Thank you
Jim

utelle
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Re: De-serializing a wxFont for a pdf file fails.

Post by utelle » Mon Jun 25, 2018 3:33 pm

dkaip wrote:In code below i take ...
wxPdfFontManagerBase::RegisterFont: Font file 'Sans 40' does not exist or is not readable.
This can't work. Method RegisterFont expects the name of a font file or a wxFont object. You should use your wxFont object f to register the font.
dkaip wrote:But then shows wxMessageBox("aaaa");, that means SetFont(f) returns true.
Yes, this works, because method SetFont will register the font implicitly if it isn't registered yet.
dkaip wrote:Sans 40 exists in my linux system, that i have take from with

Code: Select all

 wxFontData data;
wxFontDialog fnt(this, data);
if ( fnt.ShowModal() != wxID_OK )return;
data = fnt.GetFontData();
font=wxToString(data.GetChosenFont());
---------------
if(!font.IsNull())
    {
        wxFont f;
        wxFromString(font,&f);
        wxPdfFontManager* fm = wxPdfFontManager::GetFontManager();
        fm->RegisterFont(font);
        if(aPDFfile.SetFont(f))wxMessageBox("aaaa");
    }
aPDFfile.PrintChapter(MyText);
Replace

Code: Select all

fm->RegisterFont(font);
by

Code: Select all

fm->RegisterFont(f);
and your code should work as expected.


Regards,

Ulrich

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