Aspose.Slides FOSS
C++
Wie man Formen mit Connectors in C++ verbindet

Wie man Formen mit Connectors in C++ verbindet

Die Anschlüsse in Aspose.Slides FOSS sind Linienformen, die an den Verbindungsstellen Wenn man eine vernetzte Form bewegt, dann bewegen sich die Endpunkte der Verbindung mit ihr. Der häufigste Verbindungstyp ist BENT_CONNECTOR3, die Hindernisse mit einer einzigen Ellenbogenbiegung umgeht.

Voraussetzungen für die Durchführung der Maßnahmen 

git clone https://github.com/aspose-slides-foss/Aspose.Slides-FOSS-for-Cpp.git
cd Aspose.Slides-FOSS-for-Cpp && mkdir build && cd build
cmake .. && cmake --build .

Verbindungsseiten-Index

Jede Form hat vier nummerierte Verbindungsstellen:

Index derPosition der Kommission
0Oberste Mitte
1Links in der Mitte
2Unterhalb der Mitte
3Rechts Mitte

Zwei Formen verbinden 

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

int main() {
    namespace asf = Aspose::Slides::Foss;

    asf::Presentation prs;
    auto& slide = prs.slides()[0];

    // Add two rectangles
    auto& box1 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 50, 200, 200, 100);
    auto& box2 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 450, 200, 200, 100);

    box1.text_frame()->set_text("Start");
    box2.text_frame()->set_text("End");

    // Add a bent connector (initial bounds are overwritten by the connection)
    auto& conn = slide.shapes().add_connector(
        asf::ShapeType::BENT_CONNECTOR3, 0, 0, 10, 10);

    // Connect right side of box1 (site 3) to left side of box2 (site 1)
    conn.set_start_shape_connected_to(&box1);
    conn.set_start_shape_connection_site_index(3);
    conn.set_end_shape_connected_to(&box2);
    conn.set_end_shape_connection_site_index(1);

    prs.save("connected.pptx", asf::SaveFormat::PPTX);
    return 0;
}

Die Grenzen des Platzhalters (0, 0, 10, 10) Übertragen an: add_connector werden ignoriert, sobald die Verbindungsendpunkte festgelegt sind; PowerPoint leitet den Anschluss zu den angeschlossenen Formen um.

Steckverbinder-Typen 

namespace asf = Aspose::Slides::Foss;

// Straight line
asf::ShapeType::STRAIGHT_CONNECTOR1;

// Single elbow (L-shape)
asf::ShapeType::BENT_CONNECTOR2;

// Double elbow (Z-shape): most common
asf::ShapeType::BENT_CONNECTOR3;

// Curved connector
asf::ShapeType::CURVED_CONNECTOR3;

Die Verbindungsschiene gestalten 

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

int main() {
    namespace asf = Aspose::Slides::Foss;

    asf::Presentation prs;
    auto& slide = prs.slides()[0];

    auto& box1 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 50, 150, 180, 80);
    auto& box2 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 500, 300, 180, 80);

    auto& conn = slide.shapes().add_connector(
        asf::ShapeType::BENT_CONNECTOR3, 0, 0, 10, 10);
    conn.set_start_shape_connected_to(&box1);
    conn.set_start_shape_connection_site_index(2);   // bottom of box1
    conn.set_end_shape_connected_to(&box2);
    conn.set_end_shape_connection_site_index(0);     // top of box2

    // Style: dashed blue line, 2 pt width
    auto& lf = conn.line_format();
    lf.set_width(2.0);
    lf.fill_format().solid_fill_color().set_color(asf::Drawing::Color::blue);
    lf.set_dash_style(asf::LineDashStyle::DASH);

    prs.save("styled-connector.pptx", asf::SaveFormat::PPTX);
    return 0;
}

Flussdiagramm mit mehreren Anschlüssen 

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

int main() {
    namespace asf = Aspose::Slides::Foss;

    asf::Presentation prs;
    auto& slide = prs.slides()[0];

    // Three-step flowchart
    auto& step1 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 350, 50, 200, 70);
    auto& step2 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 350, 220, 200, 70);
    auto& step3 = slide.shapes().add_auto_shape(
        asf::ShapeType::RECTANGLE, 350, 390, 200, 70);

    step1.text_frame()->set_text("Step 1");
    step2.text_frame()->set_text("Step 2");
    step3.text_frame()->set_text("Step 3");

    auto connect_vertical = [&](auto& top_shape, auto& bottom_shape) {
        auto& c = slide.shapes().add_connector(
            asf::ShapeType::BENT_CONNECTOR3, 0, 0, 10, 10);
        c.set_start_shape_connected_to(&top_shape);
        c.set_start_shape_connection_site_index(2);   // bottom
        c.set_end_shape_connected_to(&bottom_shape);
        c.set_end_shape_connection_site_index(0);     // top
    };

    connect_vertical(step1, step2);
    connect_vertical(step2, step3);

    prs.save("flowchart.pptx", asf::SaveFormat::PPTX);
    return 0;
}

Lesen der Verbindungsmerkmale 

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

int main() {
    namespace asf = Aspose::Slides::Foss;

    asf::Presentation prs("connected.pptx");
    for (size_t i = 0; i < prs.slides()[0].shapes().size(); ++i) {
        auto& shape = prs.slides()[0].shapes()[i];
        if (shape.is_connector()) {
            auto& connector = static_cast<asf::Connector&>(shape);
            std::cout << "Connector found\n";
        }
    }
    return 0;
}

Siehe auch:

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