Aspose.Slides FOSS
C++
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Darbs ar attēliem prezentācijās — Aspose.Slides FOSS for C++

Aspose.Slides FOSS for C++ ļauj ievietot attēlus prezentācijas kopīgajā attēlu kolekcijā un attēlot tos slaidos, izmantojot PictureFrame formas. Attēlus var arī izmantot kā formas fona aizpildījumus, izmantojot FillType::PICTURE.

Attēla pievienošana no faila

Ielādējiet attēla baitus no diska un pievienojiet tos prezentācijas attēlu kolekcijai, izmantojot pres.images().add_image(). Pēc tam novietojiet attēlu slaidā kā PictureFrame:

#include <Aspose/Slides/Foss/export/save_format.h>
#include <Aspose/Slides/Foss/image_collection.h>
#include <Aspose/Slides/Foss/picture_frame.h>
#include <Aspose/Slides/Foss/pp_image.h>
#include <Aspose/Slides/Foss/presentation.h>
#include <Aspose/Slides/Foss/shape_collection.h>
#include <Aspose/Slides/Foss/shape_type.h>
#include <Aspose/Slides/Foss/slide.h>
#include <Aspose/Slides/Foss/slide_collection.h>

#include <cstdint>
#include <fstream>
#include <iterator>
#include <vector>

using namespace Aspose::Slides::Foss;

int main() {
    Presentation pres;

    // Add the image to the shared collection
    std::ifstream f("logo.png", std::ios::binary);
    std::vector<std::uint8_t> data(
        (std::istreambuf_iterator<char>(f)),
        std::istreambuf_iterator<char>());
    auto& img = pres.images().add_image(data);

    // Place it on the slide as a PictureFrame
    pres.slides()[0].shapes().add_picture_frame(
        ShapeType::RECTANGLE, 50, 50, 300, 200, img);

    pres.save("with-image.pptx", SaveFormat::PPTX);
    return 0;
}

Četri pozicionālie argumenti add_picture_frame() ir: x, y, width, height punktos.

Attēla pievienošana no baitvektora

Ja jums jau ir attēla baiti atmiņā (piemēram, lejupielādēti no URL vai nolasīti no datubāzes), nododiet tos tieši add_image():

#include <Aspose/Slides/Foss/export/save_format.h>
#include <Aspose/Slides/Foss/image_collection.h>
#include <Aspose/Slides/Foss/pp_image.h>
#include <Aspose/Slides/Foss/presentation.h>
#include <Aspose/Slides/Foss/shape_collection.h>
#include <Aspose/Slides/Foss/shape_type.h>
#include <Aspose/Slides/Foss/slide.h>
#include <Aspose/Slides/Foss/slide_collection.h>

#include <cstdint>
#include <fstream>
#include <iterator>
#include <vector>

using namespace Aspose::Slides::Foss;

int main() {
    // Simulate having bytes in memory
    std::ifstream f("photo.jpg", std::ios::binary);
    std::vector<std::uint8_t> image_bytes(
        (std::istreambuf_iterator<char>(f)),
        std::istreambuf_iterator<char>());

    Presentation pres;
    auto& img = pres.images().add_image(image_bytes);
    pres.slides()[0].shapes().add_picture_frame(
        ShapeType::RECTANGLE, 100, 80, 400, 250, img);
    pres.save("from-bytes.pptx", SaveFormat::PPTX);
    return 0;
}

PictureFrame pozicionēšana un izmēru noteikšana

PictureFrame, ko atgriež add_picture_frame(), pārmanto visas Shape ģeometrijas īpašības un to var pārvietot pēc izveides:

#include <Aspose/Slides/Foss/export/save_format.h>
#include <Aspose/Slides/Foss/image_collection.h>
#include <Aspose/Slides/Foss/picture_frame.h>
#include <Aspose/Slides/Foss/pp_image.h>
#include <Aspose/Slides/Foss/presentation.h>
#include <Aspose/Slides/Foss/shape_collection.h>
#include <Aspose/Slides/Foss/shape_type.h>
#include <Aspose/Slides/Foss/slide.h>
#include <Aspose/Slides/Foss/slide_collection.h>

#include <cstdint>
#include <fstream>
#include <iterator>
#include <vector>

using namespace Aspose::Slides::Foss;

int main() {
    Presentation pres;
    std::ifstream f("photo.jpg", std::ios::binary);
    std::vector<std::uint8_t> data(
        (std::istreambuf_iterator<char>(f)),
        std::istreambuf_iterator<char>());
    auto& img = pres.images().add_image(data);

    auto& pf = pres.slides()[0].shapes().add_picture_frame(
        ShapeType::RECTANGLE, 0, 0, 100, 100, img);

    // Reposition and resize after creation
    pf.set_x(50);
    pf.set_y(100);
    pf.set_width(350);
    pf.set_height(250);

    pres.save("positioned.pptx", SaveFormat::PPTX);
    return 0;
}

Attēla izmantošana kā formas aizpildījums

Jebkura forma (ne tikai PictureFrame) var izmantot attēlu kā fona aizpildījumu. Iestatiet fill_type uz FillType::PICTURE un piešķiriet attēlu attēla aizpildījuma formātam:

#include <Aspose/Slides/Foss/auto_shape.h>
#include <Aspose/Slides/Foss/export/save_format.h>
#include <Aspose/Slides/Foss/fill_format.h>
#include <Aspose/Slides/Foss/fill_type.h>
#include <Aspose/Slides/Foss/image_collection.h>
#include <Aspose/Slides/Foss/picture_fill_mode.h>
#include <Aspose/Slides/Foss/pp_image.h>
#include <Aspose/Slides/Foss/presentation.h>
#include <Aspose/Slides/Foss/shape_collection.h>
#include <Aspose/Slides/Foss/shape_type.h>
#include <Aspose/Slides/Foss/slide.h>
#include <Aspose/Slides/Foss/slide_collection.h>

#include <cstdint>
#include <fstream>
#include <iterator>
#include <vector>

using namespace Aspose::Slides::Foss;

int main() {
    Presentation pres;
    std::ifstream f("background.png", std::ios::binary);
    std::vector<std::uint8_t> data(
        (std::istreambuf_iterator<char>(f)),
        std::istreambuf_iterator<char>());
    auto& img = pres.images().add_image(data);

    auto& slide = pres.slides()[0];
    auto& shape = slide.shapes().add_auto_shape(
        ShapeType::ROUND_CORNER_RECTANGLE, 50, 50, 400, 250);
    shape.fill_format().set_fill_type(FillType::PICTURE);
    shape.fill_format().picture_fill_format().set_picture_fill_mode(PictureFillMode::STRETCH);
    shape.fill_format().picture_fill_format().picture().set_image(&img);

    pres.save("picture-fill.pptx", SaveFormat::PPTX);
    return 0;
}

PictureFillMode::STRETCH maina attēla mērogu, lai aizpildītu visu formu. Izmantojiet TILE atkārtotiem rakstiem.

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