Aspose.Slides FOSS for C++ lets you apply professional-quality visual effects to PowerPoint shapes in native C++, with no Microsoft Office and no API keys. This post demonstrates the fill system, 2D effects, and 3D formatting available in the library.

O Sistema de Preenchimento

Cada forma tem um fill_format() que controla como o interior é preenchido. Os cinco tipos de preenchimento cobrem toda a gama da paleta de design do PowerPoint.

Preenchimento Sólido

O preenchimento mais simples, uma cor plana com transparência opcional:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::RoundCornerRectangle, 100, 100, 400, 150
);
shape.text_frame()->set_text("Solid Fill");

shape.fill_format().set_fill_type(FillType::SOLID);
shape.fill_format().solid_fill_color().set_color(Color::from_argb(255, 30, 80, 180));

prs.save("solid.pptx", SaveFormat::PPTX);

Preenchimento de Gradiente Linear

Paradas de gradiente permitem mesclar de uma cor para outra ao longo da forma:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::RECTANGLE, 100, 100, 400, 150
);

auto& ff = shape.fill_format();
ff.set_fill_type(FillType::GRADIENT);
auto& gf = ff.gradient_format();
gf.set_gradient_shape(GradientShape::Linear);
gf.set_linear_gradient_angle(90);   // top-to-bottom

gf.gradient_stops().add(0.0f, Color::from_argb(255, 30, 80, 180));   // top: blue
gf.gradient_stops().add(1.0f, Color::from_argb(255, 0, 200, 160));   // bottom: teal

prs.save("gradient.pptx", SaveFormat::PPTX);

2D Visual Effects

Sombra Projetada Externa

Anexe uma sombra projetada semitransparente a qualquer forma:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::RoundCornerRectangle, 100, 100, 350, 150
);
shape.text_frame()->set_text("Drop Shadow");

shape.fill_format().set_fill_type(FillType::SOLID);
shape.fill_format().solid_fill_color().set_color(Color::white());

auto& ef = shape.effect_format();
ef.enable_outer_shadow_effect();
ef.outer_shadow_effect().set_blur_radius(12);
ef.outer_shadow_effect().set_direction(315);   // upper-left
ef.outer_shadow_effect().set_distance(8);
ef.outer_shadow_effect().shadow_color().set_color(Color::from_argb(100, 0, 0, 0));

prs.save("shadow.pptx", SaveFormat::PPTX);

Efeito de Brilho

Um halo colorido ao redor da borda da forma:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::Ellipse, 150, 100, 250, 250
);
shape.fill_format().set_fill_type(FillType::SOLID);
shape.fill_format().solid_fill_color().set_color(Color::from_argb(255, 20, 60, 140));

auto& ef = shape.effect_format();
ef.enable_glow_effect();
ef.glow_effect().set_radius(20);
ef.glow_effect().color().set_color(Color::from_argb(200, 0, 180, 255));

prs.save("glow.pptx", SaveFormat::PPTX);

3D Formatting

Bisel e Material

O three_d_format() método confere a qualquer forma plana uma aparência tridimensional. Combine um bisel com um preset de câmera e um material para o resultado mais rico:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::RECTANGLE, 150, 150, 300, 130
);
shape.text_frame()->set_text("Metal Button");

// Blue solid fill
shape.fill_format().set_fill_type(FillType::SOLID);
shape.fill_format().solid_fill_color().set_color(Color::from_argb(255, 20, 70, 160));

// 3D bevel + camera + light + material
auto& tdf = shape.three_d_format();
tdf.bevel_top().set_bevel_type(BevelPresetType::Circle);
tdf.bevel_top().set_width(10);
tdf.bevel_top().set_height(5);
tdf.camera().set_camera_type(CameraPresetType::PerspectiveAbove);
tdf.light_rig().set_light_type(LightRigPresetType::Balanced);
tdf.light_rig().set_direction(LightingDirection::Top);
tdf.set_material(MaterialPresetType::Metal);
tdf.set_depth(20);

prs.save("metal-button.pptx", SaveFormat::PPTX);

Combinando Efeitos na Mesma Forma

Sombra e formatação 3D podem coexistir em uma única forma, permitindo designs de “card” refinados:

#include <Aspose/Slides/Foss/presentation.h>

using namespace Aspose::Slides::Foss;

Presentation prs;
auto& shape = prs.slides()[0].shapes().add_auto_shape(
    ShapeType::RoundCornerRectangle, 120, 120, 360, 150
);
shape.text_frame()->set_text("Premium Card");

// Fill
shape.fill_format().set_fill_type(FillType::SOLID);
shape.fill_format().solid_fill_color().set_color(Color::from_argb(255, 30, 80, 180));

// 3D bevel
auto& tdf = shape.three_d_format();
tdf.bevel_top().set_bevel_type(BevelPresetType::Circle);
tdf.bevel_top().set_width(8);
tdf.camera().set_camera_type(CameraPresetType::PerspectiveAbove);
tdf.set_material(MaterialPresetType::Plastic);

// Drop shadow
auto& ef = shape.effect_format();
ef.enable_outer_shadow_effect();
ef.outer_shadow_effect().set_blur_radius(14);
ef.outer_shadow_effect().set_direction(270);
ef.outer_shadow_effect().set_distance(8);
ef.outer_shadow_effect().shadow_color().set_color(Color::from_argb(70, 0, 0, 0));

prs.save("premium-card.pptx", SaveFormat::PPTX);

Instalação

include(FetchContent)
FetchContent_Declare(
    aspose_slides_foss
    GIT_REPOSITORY https://github.com/aspose-slides-foss/Aspose.Slides-FOSS-for-Cpp.git
    GIT_TAG main
)
FetchContent_MakeAvailable(aspose_slides_foss)
target_link_libraries(your_target PRIVATE aspose_slides_foss)

Sem instalação do Office, sem chaves de licença, sem chamadas de rede; todo o processamento ocorre localmente.

Recursos Relacionados