Output preview widget (first part)

2025-06-05 21:59:17 +02:00 · 2021-03-27 16:06:07 +01:00
parent 40bbdd531a
commit 019637f9f2
10 changed files with 485 additions and 37 deletions
--- a/Pdf4QtViewerPlugins/OutputPreviewPlugin/outputpreviewwidget.h
+++ b/Pdf4QtViewerPlugins/OutputPreviewPlugin/outputpreviewwidget.h
@ -0,0 +1,112 @@
+//    Copyright (C) 2021 Jakub Melka
+//
+//    This file is part of Pdf4Qt.
+//
+//    Pdf4Qt is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Lesser General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    Pdf4Qt is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public License
+//    along with Pdf4Qt.  If not, see <https://www.gnu.org/licenses/>.
+
+#ifndef OUTPUTPREVIEWWIDGET_H
+#define OUTPUTPREVIEWWIDGET_H
+
+#include "pdftransparencyrenderer.h"
+
+#include <QWidget>
+
+namespace pdfplugin
+{
+
+class OutputPreviewWidget : public QWidget
+{
+    Q_OBJECT
+
+private:
+    using BaseClass = QWidget;
+
+public:
+    explicit OutputPreviewWidget(QWidget* parent);
+
+    enum DisplayMode
+    {
+        Separations,
+        ColorWarningInkCoverage,
+        ColorWarningRichBlack,
+        InkCoverage
+    };
+
+    virtual QSize sizeHint() const override;
+    virtual QSize minimumSizeHint() const override;
+
+    /// Clears all widget contents
+    void clear();
+
+    /// Set active image
+    void setPageImage(QImage image, pdf::PDFFloatBitmapWithColorSpace originalProcessBitmap, QSizeF pageSizeMM);
+
+    const pdf::PDFInkMapper* getInkMapper() const;
+    void setInkMapper(const pdf::PDFInkMapper* inkMapper);
+
+    /// Returns page image size hint (ideal size of page image)
+    QSize getPageImageSizeHint() const;
+
+protected:
+    virtual void paintEvent(QPaintEvent* event) override;
+
+private:
+    QMargins getDrawMargins() const;
+    QRect getContentRect() const;
+    QRect getPageImageRect(QRect contentRect) const;
+
+    int getInfoBoxWidth() const;
+    int getInfoBoxContentHorizontalMargin() const;
+    void buildInfoBoxItems();
+
+    void addInfoBoxHeader(QString caption);
+    void addInfoBoxSeparator();
+    void addInfoBoxColoredItem(QColor color, QString caption, QString value);
+
+    enum InfoBoxStyle
+    {
+        Header,
+        Separator,
+        ColoredItem
+    };
+
+    struct InfoBoxItem
+    {
+        InfoBoxItem(InfoBoxStyle style, QColor color, QString caption, QString value) :
+            style(style),
+            color(color),
+            caption(caption),
+            value(value)
+        {
+
+        }
+
+        InfoBoxStyle style = InfoBoxStyle::Separator;
+        QColor color;
+        QString caption;
+        QString value;
+    };
+
+    const pdf::PDFInkMapper* m_inkMapper;
+    DisplayMode m_displayMode;
+    std::vector<InfoBoxItem> m_infoBoxItems;
+
+    QImage m_pageImage;
+    pdf::PDFFloatBitmapWithColorSpace m_originalProcessBitmap;
+    QSizeF m_pageSizeMM;
+};
+
+}   // pdfplugin
+
+#endif // OUTPUTPREVIEWWIDGET_H