qt pdf 模块简介_代码007(未授权)

本文介绍: Qt pdf 模块底层使用的是PDFium库, 不知道是不是PDFium库的版本问题,在解析书签目录的时候,还是有点问题, 没有 location,所以没必要深究这个模块,不是太理想。

项目	说明
OS	win10 x64
Qt	6.6
compiler	ms vc2022
构建工具	cmake

如果只需要呈现页面图像，而不需要文本选择、搜索和导航等功能，则该模块包含一个QImageIOHandler插件，该插件将PDF视为可伸缩的图像格式，类似于SVG。您可以简单地使用Image，并将currentFrame属性设置为希望显示的页面索引。如果PDF文件不呈现其自己的背景，则图像具有透明背景。

 find_package(Qt6 REQUIRED COMPONENTS Pdf PdfWidgets)
 target_link_libraries(mytarget Qt6::Pdf Qt6::PdfWidgets)

Qt PDF在Qt公司的商业许可下可用。此外，它在GNU较宽松通用公共许可证(版本3)或GNU通用公共许可证(版本2)下可用。有关此模块的更多详细信息，请参阅Qt PDF许可。

在这里插入图片描述

#CMakeLists.txt
	
cmake_minimum_required(VERSION 3.5)

project(QtPDF VERSION 0.1 LANGUAGES CXX)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets  PdfWidgets Pdf)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets  PdfWidgets Pdf)

set(PROJECT_SOURCES
        main.cpp
)

if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable(QtPDF
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES}
    )
# Define target properties for Android with Qt 6 as:
#    set_property(TARGET QtPDF APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
else()
    if(ANDROID)
        add_library(QtPDF SHARED
            ${PROJECT_SOURCES}
        )
# Define properties for Android with Qt 5 after find_package() calls as:
#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
    else()
        add_executable(QtPDF
            ${PROJECT_SOURCES}
        )
    endif()
endif()

target_link_libraries(QtPDF PRIVATE
  Qt${QT_VERSION_MAJOR}::Widgets
  Qt${QT_VERSION_MAJOR}::PdfWidgets
  Qt${QT_VERSION_MAJOR}::Pdf
)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
if(${QT_VERSION} VERSION_LESS 6.1.0)
  set(BUNDLE_ID_OPTION MACOSX_BUNDLE_GUI_IDENTIFIER com.example.QtPDF)
endif()
set_target_properties(QtPDF PROPERTIES
    ${BUNDLE_ID_OPTION}
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

include(GNUInstallDirs)
install(TARGETS QtPDF
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

if(QT_VERSION_MAJOR EQUAL 6)
    qt_finalize_executable(QtPDF)
endif()

#include <QtWidgets>
#include <QtPdfWidgets>
#include "qout.hpp"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QMainWindow w;

    // 分割器
    auto splitter  = new QSplitter(&amp;w);
    w.setCentralWidget(splitter);

    // PDF查看器控件
    auto *pdf_view = new QPdfView(splitter);
    pdf_view->setPageMode(QPdfView::PageMode::MultiPage); // 多页浏览模式
    pdf_view->setZoomMode(QPdfView::ZoomMode::FitToWidth);// 适合宽度模式

    // QPdfDocument类 加载PDF文档并呈现页面
    auto pdf_doc = new QPdfDocument(pdf_view);
    pdf_view->setDocument(pdf_doc);

    pdf_doc->load("E:/00_Download/Compressed/现代 C   教程：高速上手 C  11_14_17_20.pdf");

    // QPdfBookmarkModel类 保存PDF文档中的链接树(锚点)，例如目录。
    QPdfBookmarkModel *pdfBookmarkModel = new QPdfBookmarkModel(splitter);
    pdfBookmarkModel->setDocument(pdf_doc);

    // 使用TreeView 来显示目录
    auto bookMarkTreeView = new  QTreeView(splitter);
    QFont serifFont("Times", 10, QFont::Normal);
    bookMarkTreeView->setModel(pdfBookmarkModel);
    bookMarkTreeView->setFont(serifFont);
    bookMarkTreeView->header()->hide();

    splitter->addWidget(bookMarkTreeView);
    splitter->addWidget(pdf_view);
    splitter->setStretchFactor(1,1); // pdf_view 获取最大的可用空间

    w.showMaximized();

    // 打印书签的角色名称
    qout << pdfBookmarkModel->roleNames();
    qout << pdfBookmarkModel->rowCount() << pdfBookmarkModel->columnCount();


    auto index = pdfBookmarkModel->index(0,0);
    qout << index;

    qout << pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Title);
    qout << pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Level);
    qout << pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Page);
    qout << pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Location);
    qout << pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Zoom);

    QObject::connect(bookMarkTreeView,&amp;QTreeView::clicked,bookMarkTreeView,[pdf_view,pdfBookmarkModel](const QModelIndex &amp;index){
        QPdfPageNavigator* nav = pdf_view->pageNavigator();
        auto page = pdfBookmarkModel->data(index,(int)QPdfBookmarkModel::Role::Page).toInt();
        nav->jump(page, {}, nav->currentZoom());
    });

    return a.exec();
}