function CreateButtonAppearance($doc, $button_down)
{
// Create a button appearance stream ------------------------------------
$build = new ElementBuilder();
$writer = new ElementWriter();
$writer->Begin($doc->GetSDFDoc());
// Draw background
$element = $build->CreateRect(0, 0, 101, 37);
$element->SetPathFill(true);
$element->SetPathStroke(false);
$element->GetGState()->SetFillColorSpace(ColorSpace::CreateDeviceGray());
$element->GetGState()->SetFillColor(new ColorPt(0.75, 0.0, 0.0));
$writer->WriteElement($element);
// Draw 'Submit' text
$writer->WriteElement($build->CreateTextBegin());
$text = "Submit";
$element = $build->CreateTextRun($text, Font::Create($doc->GetSDFDoc(), Font::e_helvetica_bold), 12.0);
$element->GetGState()->SetFillColor(new ColorPt(0.0, 0.0, 0.0));
if ($button_down) {
$element->SetTextMatrix(1.0, 0.0, 0.0, 1.0, 33.0, 10.0);
} else {
$element->SetTextMatrix(1.0, 0.0, 0.0, 1.0, 30.0, 13.0);
}
$writer->WriteElement($element);
$writer->WriteElement($build->CreateTextEnd());
$stm = $writer->End();
// Set the bounding box
$stm->PutRect("BBox", 0, 0, 101, 37);
$stm->PutName("Subtype", "Form");
return $stm;
}
// A bit more advanced example of how to create an OCMD text layer that
// is visible only if text, image and path layers are all 'ON'.
// An example of how to set 'Visibility Policy' in OCMD.
$ocgs = $doc->CreateIndirectArray();
$ocgs->PushBack($image_layer->GetSDFObj());
$ocgs->PushBack($vector_layer->GetSDFObj());
$ocgs->PushBack($text_layer->GetSDFObj());
$text_ocmd = OCMD::Create($doc, $ocgs, OCMD::e_AllOn);
$element = $builde->CreateForm(CreateGroup3($doc, $text_ocmd->GetSDFObj()));
} else {
$element = $builder->CreateForm(CreateGroup3($doc, $text_layer->GetSDFObj()));
}
$writer->WriteElement($element);
// Add some content to the page that does not belong to any layer...
// In this case this is a rectangle representing the page border.
$element = $builder->CreateRect(0, 0, $page->GetPageWidth(), $page->GetPageHeight());
$element->SetPathFill(false);
$element->SetPathStroke(true);
$element->GetGState()->SetLineWidth(40);
$writer->WriteElement($element);
$writer->End();
// save changes to the current page
$doc->PagePushBack($page);
// Set the default viewing preference to display 'Layer' tab.
$prefs = $doc->GetViewPrefs();
$prefs->SetPageMode(PDFDocViewPrefs::e_UseOC);
$doc->Save($output_path . "pdf_layers.pdf", SDFDoc::e_linearized);
echo nl2br("Done.\n");
// The following is a code snippet shows how to selectively render
// and export PDF layers.
$doc = new PDFDoc($output_path . "pdf_layers.pdf");
$gs->SetLineWidth(4); // Set the fill color space to the Pattern color space. $gs->SetFillColorSpace(ColorSpace::CreatePattern()); $gs->SetFillColor(new PatternColor(CreateTilingPattern($doc))); $writer->WriteElement($element); $writer->WriteElement($builder->CreateTextEnd()); // Finish the text block $writer->End(); // Save the page $doc->PagePushBack($page); //----------------------------------------------- /// The following sample illustrates how to create and use image tiling pattern $page = $doc->PageCreate(); $writer->Begin($page); $builder->Reset(); $element = $builder->CreateRect(0, 0, 612, 794); // Set the fill color space to the Pattern color space. $gs = $element->GetGState(); $gs->SetFillColorSpace(ColorSpace::CreatePattern()); $gs->SetFillColor(new PatternColor(CreateImageTilingPattern($doc))); $element->SetPathFill(true); $writer->WriteElement($element); $writer->End(); // Save the page $doc->PagePushBack($page); //----------------------------------------------- /// The following sample illustrates how to create and use PDF shadings $page = $doc->PageCreate(); $writer->Begin($page); $builder->Reset(); $element = $builder->CreateRect(0, 0, 612, 794);
