Trabalhar com Transparência | C++

 1For complete examples and data files, please go to https://github.com/aspose-page/Aspose.Page-for-C  2// Create new XPS Document  3System::SharedPtr<XpsDocument> doc = System::MakeObject<XpsDocument>();  4//Add Canvas to XpsDocument instance  5System::SharedPtr<XpsCanvas> canvas = doc->AddCanvas();  6// Rectangle with opacity masked by ImageBrush  7System::SharedPtr<XpsPath> path = canvas->AddPath(doc->CreatePathGeometry(u"M 10,180 L 228,180 228,285 10,285"));  8path->set_Fill(doc->CreateSolidColorBrush(doc->CreateColor(1.0f, 0.0f, 0.0f)));  9path->set_OpacityMask(doc->CreateImageBrush(dataDir() + u"R08SY_NN.tif", System::Drawing::RectangleF(0.f, 0.f, 128.f, 192.f), System::Drawing::RectangleF(0.f, 0.f, 64.f, 96.f))); 10(System::DynamicCast<Aspose::Page::Xps::XpsModel::XpsImageBrush>(path->get_OpacityMask()))->set_TileMode(Aspose::Page::Xps::XpsModel::XpsTileMode::Tile); 11// Save resultant XPS document 12doc->Save(outDir() + u"OpacityMask_out.xps");

 1For complete examples and data files, please go to https://github.com/aspose-page/Aspose.Page-for-C  2// Create new XPS Document  3auto doc = System::MakeObject<XpsDocument>();  4  5// Just to demonstrate transparency  6doc->AddPath(doc->CreatePathGeometry(u"M120,0 H400 v1000 H120"))->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Gray()));  7doc->AddPath(doc->CreatePathGeometry(u"M300,120 h600 V420 h-600"))->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Gray()));  8  9// Create path with closed rectangle geometry 10System::SharedPtr<XpsPath> path1 = doc->CreatePath(doc->CreatePathGeometry(u"M20,20 h200 v200 h-200 z")); 11// Set blue solid brush to fill path1 12path1->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Blue())); 13// Add it to the current page 14System::SharedPtr<XpsPath> path2 = doc->Add(path1); 15 16// path1 and path2 are the same as soon as path1 hasn't been placed inside any other element 17// (which means that path1 had no parent element). 18// Because of that rectangle's color on the page effectively turns to green 19path2->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Green())); 20 21// Now add path2 once again. Now path2 has parent. So path3 won't be the same as path2. 22// Thus a new rectangle is painted on the page ... 23System::SharedPtr<XpsPath> path3 = doc->Add(path2); 24// ... and we shift it 300 units lower ... 25path3->set_RenderTransform(doc->CreateMatrix(1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 300.0f)); 26// ... and set red solid brush to fill it 27path3->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Red())); 28 29// Create new path4 with path2's geometry ... 30System::SharedPtr<XpsPath> path4 = doc->AddPath(path2->get_Data()); 31// ... shift it 300 units to the right ... 32path4->set_RenderTransform(doc->CreateMatrix(1.0f, 0.0f, 0.0f, 1.0f, 300.0f, 0.0f)); 33// ... and set blue solid fill 34path4->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Blue())); 35 36// Add path4 once again. 37System::SharedPtr<XpsPath> path5 = doc->Add(path4); 38// path4 and path5 are not the same again ... 39// (move path5 300 units lower) 40path5->set_RenderTransform(path5->get_RenderTransform()->Clone()); 41// to disconnect RenderTransform value from path4 (see next comment about Fill property) 42path5->get_RenderTransform()->Translate(0.0f, 300.0f); 43// ... but if we set the opacity of Fill property, it will take effect on both path5 and path4 44// because brush is a complex property value which remains the same for path5 and path4 45path5->get_Fill()->set_Opacity(0.8f); 46 47// Create new path6 with path2's geometry ... 48System::SharedPtr<XpsPath> path6 = doc->AddPath(path2->get_Data()); 49// ... shift it 600 units to the right ... 50path6->set_RenderTransform(doc->CreateMatrix(1.0f, 0.0f, 0.0f, 1.0f, 600.0f, 0.0f)); 51// ... and set yellow solid fill 52path6->set_Fill(doc->CreateSolidColorBrush(System::Drawing::Color::get_Yellow())); 53 54// Now add path6's clone ... 55System::SharedPtr<XpsPath> path7 = doc->Add(path6->Clone()); 56// (move path5 300 units lower) 57path7->set_RenderTransform(path7->get_RenderTransform()->Clone()); 58path7->get_RenderTransform()->Translate(0.0f, 300.0f); 59// ... and set opacity for path7 60path7->get_Fill()->set_Opacity(0.8f); 61// Now opacity effects independantly as soon as property values are cloned along with the element 62 63// The following code block is equivalent to the previous one. 64// Add path6 itself. path6 and path7 are not the same. Although their Fill property values are the same  65//XpsPath path7 = doc.Add(path6); 66//path7.RenderTransform = path7.RenderTransform.Clone(); 67//path7.RenderTransform.Translate(0, 300); 68// To "disconnect" path7's Fill property from path6's Fill property reassign it to its clone (or path6's Fill clone) 69//path7.Fill = ((XpsSolidColorBrush)path7.Fill).Clone(); 70//path7.Fill.Opacity = 0.8f; 71 72// Save resultant XPS document 73doc->Save(outDir() + u"WorkingWithTransparency_out.xps");