Trabalhar com Gradiente | Solução API C++
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]Adicionar Gradiente em Documento XPS
Adicionar Gradiente Horizontal
O Aspose.Page para C++ permite adicionar gradiente horizontal a um documento XPS. A classe XpsGrandientBrush é utilizada para especificar a informação XpsGradientStop e XpsPath para o objeto XpsDocument que representa o ficheiro XPS. O código C++ seguinte mostra como adicionar informação de gradiente horizontal a um documento.
- Crie um objeto da classe XpsDocument
- Adicione XpsPath ao documento XPS
- Defina as informações de renderização
- Utilize CreateLinearGradientBrush do documento XPS para criar um pincel de gradiente. Em seguida, defina este pincel para preenchimento.
- Utilize set_GradientStops para definir XpsGradientStop para o pincel.
- Guarde o documento.
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// Initialize List of XpsGradentStop
5System::SharedPtr<System::Collections::Generic::List<System::SharedPtr<XpsGradientStop>>> stops = System::MakeObject<System::Collections::Generic::List<System::SharedPtr<XpsGradientStop>>>();
6stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 244, 253, 225), 0.0673828f));
7stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 251, 240, 23), 0.314453f));
8stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 252, 209, 0), 0.482422f));
9stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 241, 254, 161), 0.634766f));
10stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 53, 253, 255), 0.915039f));
11stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 12, 91, 248), 1.f));
12// Create new path by defining geometery in abbreviation form
13System::SharedPtr<XpsPath> path = doc->AddPath(doc->CreatePathGeometry(u"M 10,210 L 228,210 228,300 10,300"));
14path->set_RenderTransform(doc->CreateMatrix(1.f, 0.f, 0.f, 1.f, 20.f, 70.f));
15path->set_Fill(doc->CreateLinearGradientBrush(System::Drawing::PointF(10.f, 0.f), System::Drawing::PointF(228.f, 0.f)));
16(System::DynamicCast<Aspose::Page::Xps::XpsModel::XpsGradientBrush>(path->get_Fill()))->get_GradientStops()->AddRange(stops);
17// Save resultant XPS document
18doc->Save(outDir() + u"AddHorizontalGradient_out.xps");Adicionar Gradiente Vertical
Tal como pode adicionar o gradiente horizontal, pode utilizar o Aspose. Page para C++ para adicionar informações de gradiente vertical ao documento XPS. O exemplo de código C++ seguinte mostra como adicionar um gradiente vertical a um documento 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// Initialize List of XpsGradentStop
5auto stops = System::MakeObject<System::Collections::Generic::List<System::SharedPtr<XpsGradientStop>>>();
6stops->Add(doc->CreateGradientStop(doc->CreateColor(253, 255, 12, 0), 0.f));
7stops->Add(doc->CreateGradientStop(doc->CreateColor(252, 255, 154, 0), 0.359375f));
8stops->Add(doc->CreateGradientStop(doc->CreateColor(252, 255, 56, 0), 0.424805f));
9stops->Add(doc->CreateGradientStop(doc->CreateColor(253, 255, 229, 0), 0.879883f));
10stops->Add(doc->CreateGradientStop(doc->CreateColor(252, 255, 255, 234), 1.f));
11// Create new path by defining geometery in abbreviation form
12System::SharedPtr<XpsPath> path = doc->AddPath(doc->CreatePathGeometry(u"M 10,110 L 228,110 228,200 10,200"));
13path->set_RenderTransform(doc->CreateMatrix(1.f, 0.f, 0.f, 1.f, 20.f, 70.f));
14path->set_Fill(doc->CreateLinearGradientBrush(System::Drawing::PointF(10.f, 110.f), System::Drawing::PointF(10.f, 200.f)));
15(System::DynamicCast<Aspose::Page::Xps::XpsModel::XpsGradientBrush>(path->get_Fill()))->get_GradientStops()->AddRange(stops);
16// Save resultant XPS document
17doc->Save(outDir() + u"AddVerticalGradient_out.xps");Adicionar Gradiente Linear
Também pode adicionar gradiente linear a um documento XPS utilizando o Aspose.Page para C++, como mostrado no exemplo de código seguinte.
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// Initialize List of XpsGradentStop
5System::SharedPtr<System::Collections::Generic::List<System::SharedPtr<XpsGradientStop>>> stops = System::MakeObject<System::Collections::Generic::List<System::SharedPtr<XpsGradientStop>>>();
6// Add Colors to Gradient
7stops->Add(doc->CreateGradientStop(doc->CreateColor(0, 142, 4), 0.f));
8stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 202, 0), 0.144531f));
9stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 250, 0), 0.264648f));
10stops->Add(doc->CreateGradientStop(doc->CreateColor(255, 0, 0), 0.414063f));
11stops->Add(doc->CreateGradientStop(doc->CreateColor(233, 0, 255), 0.544922f));
12stops->Add(doc->CreateGradientStop(doc->CreateColor(107, 27, 190), 0.694336f));
13stops->Add(doc->CreateGradientStop(doc->CreateColor(63, 0, 255), 0.844727f));
14stops->Add(doc->CreateGradientStop(doc->CreateColor(0, 199, 80), 1.f));
15// Create new path by defining geometery in abbreviation form
16System::SharedPtr<XpsPath> path = doc->AddPath(doc->CreatePathGeometry(u"M 10,10 L 228,10 228,100 10,100"));
17path->set_RenderTransform(doc->CreateMatrix(1.f, 0.f, 0.f, 1.f, 20.f, 70.f));
18path->set_Fill(doc->CreateLinearGradientBrush(System::Drawing::PointF(10.f, 10.f), System::Drawing::PointF(228.f, 100.f)));
19(System::DynamicCast<Aspose::Page::Xps::XpsModel::XpsGradientBrush>(path->get_Fill()))->get_GradientStops()->AddRange(stops);
20// Save resultant XPS document
21doc->Save(outDir() + u"AddLinearGradient_out.xps");