2018年世界杯冠军_世界杯规则 - cnppxy.com

1. 解压

tar -zxvf libharu-libharu-v2.4.3-0-g8dbcfe4.tar

2.在解压出来文件夹中创建一个build文件夹

mkdir build

3.进入build文件夹

cd build

4.使用cmake编译

cmake ..

5.make编译

make

6.编译出来的 libhpdf.so 就是我们需要的库文件

*：在引入头文件时，需要把 build/include/hpdf_config.h 文件一起拿出来，不然会报错缺少文件

二、基本使用

// 简单添加一张图片到PDF文件中，图片按比例显示，PDF文件页面边距50px

int main2()

{

HPDF_Doc pdf = HPDF_New(NULL, NULL);

// 创建PDF文件和页面

HPDF_Page page = HPDF_AddPage (pdf);

HPDF_Page_SetSize (page, HPDF_PAGE_SIZE_A4, HPDF_PAGE_PORTRAIT);

HPDF_REAL page_width = HPDF_Page_GetWidth(page);

HPDF_REAL page_height = HPDF_Page_GetHeight(page);

cout << "page width:" << page_width << " height:" << page_height << endl;

// 加载图片到页面上,PDF的坐标是从左下角计算的

HPDF_Image image = HPDF_LoadJpegImageFromFile (pdf, "./files/1.jpg");

HPDF_REAL width = HPDF_Image_GetWidth(image);

HPDF_REAL height = HPDF_Image_GetHeight(image);

HPDF_REAL image_scale = width / (page_width-100);

HPDF_Page_DrawImage(page, image, 50, page_height - height / image_scale - 50, width / image_scale, height / image_scale);

cout << "image width:" << width << " height:" << height << endl;

HPDF_SaveToFile (pdf, "1.pdf");

HPDF_Free (pdf);

cout << "save success" << endl;

return 0;

}

// 添加多张图片到PDF文件中，一张图片一个页面

int main()

{

HPDF_Doc pdf = HPDF_New(NULL, NULL);

vector files = {"./files/1.jpg", "./files/2.jpg", "./files/3.jpg"};

for(int i=0; i

{

HPDF_Page page = HPDF_AddPage(pdf);

HPDF_Page_SetSize (page, HPDF_PAGE_SIZE_A4, HPDF_PAGE_PORTRAIT);

HPDF_Image image = HPDF_LoadJpegImageFromFile(pdf, files.at(i).c_str());

HPDF_Page_DrawImage(page, image, 50, 50, HPDF_Image_GetWidth(image), HPDF_Image_GetHeight(image));

}

HPDF_SaveToFile(pdf, "2.pdf");

HPDF_Free(pdf);

}

// 图片是什么尺寸，PDF的page页面就是什么尺寸

int main()

{

HPDF_Doc pdf = HPDF_New(NULL, NULL);

HPDF_SetCompressionMode(pdf, HPDF_COMP_ALL); // 压缩

vector files = { "./files/1.jpg", "./files/2.jpg", "./files/3.jpg" };

for (int i = 0; i < files.size(); i++)

{

HPDF_Image image = HPDF_LoadJpegImageFromFile(pdf, files.at(i).c_str());

HPDF_REAL image_width = HPDF_Image_GetWidth(image);

HPDF_REAL image_height = HPDF_Image_GetHeight(image);

HPDF_Page page = HPDF_AddPage(pdf);

HPDF_Page_SetWidth(page, image_width);

HPDF_Page_SetHeight(page, image_height);

// 设置缩放

HPDF_Destination dst = HPDF_Page_CreateDestination(page);

HPDF_Destination_SetXYZ(dst, 0, HPDF_Page_GetHeight(page), 1);

HPDF_SetOpenAction(pdf, dst);

HPDF_Page_DrawImage(page, image, 0, 0, image_width, image_height);

}

HPDF_SaveToFile(pdf, "1.pdf");

HPDF_Free(pdf);

}