liyepan
2f8726ad47
- 导出预览窗口按屏幕可用高度计算尺寸，底部的「保存 PDF…」不会再顶出屏幕 - 默认欢迎文档去掉「实时预览（下一版）」，换成已实现的导出 PDF - logo 是黑字透明底，放深色任务栏里等于看不见；packaging/generate_icons.py 给它垫白色圆角底板并输出 16–256 多尺寸 ico，窗口图标与 exe 图标统一使用 - 新增 packaging/generate_icons.py，便于换图后重新生成 - 文档与截图同步
112 lines
4.0 KiB
C++
112 lines
4.0 KiB
C++
#include "ExportDialog.h"
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#include "MarkdownRenderer.h"
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#include <QDir>
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#include <QFileDialog>
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#include <QFileInfo>
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#include <QHBoxLayout>
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#include <QLabel>
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#include <QMessageBox>
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#include <QPageSize>
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#include <QPrinter>
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#include <QPushButton>
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#include <QScreen>
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#include <QTextBrowser>
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#include <QTextDocument>
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#include <QVBoxLayout>
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ExportDialog::ExportDialog(const QString &markdown, const QString &documentName,
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const QString &startDirectory, QWidget *parent)
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: QDialog(parent)
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, m_documentName(documentName)
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, m_startDirectory(startDirectory)
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{
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setWindowTitle(tr("导出 PDF — %1")
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.arg(documentName.isEmpty() ? tr("未命名") : documentName));
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// 别让窗口比屏幕还高，否则底部的按钮会顶到屏幕外面去。
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const QRect available = screen() ? screen()->availableGeometry() : QRect(0, 0, 1280, 900);
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resize(qMin(900, available.width() - 80), qMin(860, available.height() - 100));
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QVBoxLayout *layout = new QVBoxLayout(this);
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layout->setContentsMargins(16, 16, 16, 12);
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layout->setSpacing(10);
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m_document = new QTextDocument(this);
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MarkdownRenderer::render(markdown, m_document);
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// A4 去掉 16mm 页边距后的正文宽度（96dpi 下的像素）：
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// 预览和打印用同一个页宽，看到的就是导出的样子。
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m_document->setPageSize(QSizeF(672.76, 1001.57));
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m_preview = new QTextBrowser(this);
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m_preview->setFrameShape(QFrame::NoFrame);
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m_preview->setOpenExternalLinks(true);
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m_preview->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_preview->setFixedWidth(700);
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m_preview->setDocument(m_document);
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m_preview->setStyleSheet(QStringLiteral(
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"QTextBrowser { background: #ffffff; color: #1f2328;"
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" border: 1px solid #d8dde3; border-radius: 4px; }"));
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QHBoxLayout *center = new QHBoxLayout;
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center->addStretch(1);
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center->addWidget(m_preview);
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center->addStretch(1);
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layout->addLayout(center, 1);
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QLabel *hint = new QLabel(tr("A4 纸、16mm 页边距，内容和预览一致。"), this);
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hint->setForegroundRole(QPalette::PlaceholderText);
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QPushButton *saveButton = new QPushButton(tr("保存 PDF…"), this);
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saveButton->setDefault(true);
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QPushButton *closeButton = new QPushButton(tr("关闭"), this);
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QHBoxLayout *buttons = new QHBoxLayout;
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buttons->addWidget(hint);
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buttons->addStretch(1);
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buttons->addWidget(closeButton);
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buttons->addWidget(saveButton);
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layout->addLayout(buttons);
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connect(closeButton, &QPushButton::clicked, this, &QDialog::reject);
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connect(saveButton, &QPushButton::clicked, this, &ExportDialog::savePdf);
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}
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void ExportDialog::savePdf()
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{
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QString suggested = m_documentName.isEmpty()
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? tr("未命名")
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: QFileInfo(m_documentName).completeBaseName();
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suggested += QStringLiteral(".pdf");
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QString target = QFileDialog::getSaveFileName(
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this, tr("保存 PDF"), QDir(m_startDirectory).filePath(suggested),
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tr("PDF 文件 (*.pdf)"));
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if (target.isEmpty())
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return;
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if (!target.endsWith(QStringLiteral(".pdf"), Qt::CaseInsensitive))
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target += QStringLiteral(".pdf");
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QPrinter printer(QPrinter::HighResolution);
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printer.setOutputFormat(QPrinter::PdfFormat);
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printer.setOutputFileName(target);
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printer.setPageSize(QPageSize(QPageSize::A4));
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printer.setPageMargins(QMarginsF(16, 16, 16, 16), QPageLayout::Millimeter);
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printer.setDocName(QFileInfo(target).completeBaseName());
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m_document->print(&printer);
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if (!QFileInfo::exists(target) || QFileInfo(target).size() <= 0) {
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QMessageBox::warning(this, tr("导出失败"),
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tr("没能写出「%1」，换个位置再试一次。")
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.arg(QDir::toNativeSeparators(target)));
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return;
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}
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QMessageBox::information(this, tr("导出完成"),
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tr("已保存到\n%1").arg(QDir::toNativeSeparators(target)));
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accept();
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}
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