chore: move elideText logic to itemdata

Log:

CMakeLists.txt

@@ -5,7 +5,7 @@ set(BIN_NAME dde-clipboard)
 project(${BIN_NAME})
 
 #set(CMAKE_VERBOSE_MAKEFILE ON)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)

dde-clipboard/itemdata.cpp

@@ -3,12 +3,15 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "itemdata.h"
+#include "constants.h"
 
 #include <QDebug>
 #include <QApplication>
 #include <QWidget>
 #include <QDataStream>
 
+#include <private/qtextengine_p.h>
+
 #include <QLabel>
 
 static inline QString textUriListLiteral() { return QStringLiteral("text/uri-list"); }
@@ -95,6 +98,7 @@ ItemData::ItemData(const QByteArray &buf)
     m_enable = true;
     m_iconDataList = info.m_iconDataList;
     m_formatMap = info.m_formatMap;
+    m_text_list = elideText(m_text, QSizeF(ItemWidth - ContentMargin * 2, ItemHeight - ItemTitleHeight), QTextOption::WrapAnywhere, QApplication::font(), Qt::ElideMiddle, 0);
 }
 
 QString ItemData::title()
@@ -179,6 +183,24 @@ const QList<FileIconData> &ItemData::IconDataList()
     return m_iconDataList;
 }
 
+QSize ItemData::sizeHint(int fontHeight)
+{
+    if (m_type == Text) {
+        return QSize(ItemWidth, itemHeight(fontHeight) + ItemMargin);
+    }
+
+    return QSize(ItemWidth, ItemHeight + ItemMargin);
+}
+
+int ItemData::itemHeight(int fontHeight)
+{
+    if (m_type == Text) {
+        auto length = m_text_list.length() > 4 ? 4 : m_text_list.length();
+        return length * fontHeight + ItemTitleHeight + ItemStatusBarHeight + TextContentTopMargin;
+    }
+    return ItemHeight;
+}
+
 /*!
  * \~chinese \name remove
  * \~chinese \brief 将当前剪切块数据移除,调用此函数会发出ItemData::destroy的信号
@@ -201,3 +223,79 @@ const QSize &ItemData::pixSize() const
 {
     return m_pixSize;
 }
+
+QStringList ItemData::elideText(const QString &text, const QSizeF &size,
+                               QTextOption::WrapMode wordWrap, const QFont &font,
+                               Qt::TextElideMode mode, qreal lineHeight, int flags)
+{
+    QTextLayout textLayout(text);
+
+    textLayout.setFont(font);
+
+    QStringList lines;
+
+    elideText(&textLayout, size, wordWrap, mode, lineHeight, flags, &lines);
+
+    return lines;
+}
+
+void ItemData::elideText(QTextLayout *layout, const QSizeF &size, QTextOption::WrapMode wordWrap,
+                            Qt::TextElideMode mode, qreal lineHeight, int flags, QStringList *lines)
+{
+    qreal height = 0;
+    QPointF offset(0, 0);
+
+    QString text = layout->engine()->hasFormats() ? layout->engine()->block.text() : layout->text();
+    QTextOption &text_option = *const_cast<QTextOption *>(&layout->textOption());
+
+    text_option.setWrapMode(wordWrap);
+
+    if (flags & Qt::AlignRight)
+        text_option.setAlignment(Qt::AlignRight);
+    else if (flags & Qt::AlignHCenter)
+        text_option.setAlignment(Qt::AlignHCenter);
+
+    // dont paint
+    layout->engine()->ignoreBidi = true;
+    layout->beginLayout();
+
+    QTextLine line = layout->createLine();
+
+    while (line.isValid()) {
+        height += lineHeight;
+
+        if (height + lineHeight > size.height()) {
+            const QString &end_str = layout->engine()->elidedText(mode, qRound(size.width()), flags, line.textStart());
+
+            layout->endLayout();
+            layout->setText(end_str);
+
+            if (layout->engine()->block.docHandle()) {
+                const_cast<QTextDocument *>(layout->engine()->block.document())->setPlainText(end_str);
+            }
+
+            text_option.setWrapMode(QTextOption::NoWrap);
+            layout->beginLayout();
+            line = layout->createLine();
+            line.setLineWidth(size.width() - 1);
+            text = end_str;
+        } else {
+            line.setLineWidth(size.width());
+        }
+
+        line.setPosition(offset);
+        offset.setY(offset.y() + lineHeight);
+
+        if (lines) {
+            lines->append(text.mid(line.textStart(), line.textLength()));
+        }
+
+        if (height + lineHeight > size.height())
+            break;
+
+        line = layout->createLine();
+    }
+
+    layout->endLayout();
+}
+

dde-clipboard/itemdata.h

@@ -12,7 +12,7 @@
 #include <QPixmap>
 #include <QUrl>
 #include <QDBusArgument>
-
+#include <QTextLayout>
 #include "constants.h"
 #include "dbus/iteminfo.h"
 
@@ -34,7 +34,12 @@ class ItemData : public QObject
     const QList<QUrl> &urls();                  // 文件链接
     const QDateTime &time();                    // 复制时间
     const QString &text();                      // 内容预览
+    QStringList get_text() const {
+        return m_text_list;
+    };
+    QSize sizeHint(int height);
 
+    int itemHeight(int fontHeight);
     inline bool dataEnabled() { return m_enable; }
     void setDataEnabled(bool enable) { m_enable = enable; }
 
@@ -67,13 +72,26 @@ class ItemData : public QObject
      */
     void reborn(ItemData *data);
 
+private:
+    QStringList elideText(const QString &text, const QSizeF &size,
+                          QTextOption::WrapMode wordWrap,
+                          const QFont &font,
+                          Qt::TextElideMode mode,
+                          qreal lineHeight,
+                          int flags = 0);
+
+    void elideText(QTextLayout *layout, const QSizeF &size,
+                   QTextOption::WrapMode wordWrap,
+                   Qt::TextElideMode mode, qreal lineHeight,
+                   int flags = 0, QStringList *lines = 0);
 private:
     QMap<QString, QByteArray> m_formatMap;
     DataType m_type = Unknown;
     QList<QUrl> m_urls;
     QVariant m_variantImage;
     QSize m_pixSize;
     QString m_text;
+    QStringList m_text_list;
     bool m_enable;
     QDateTime m_createTime;
     QList<FileIconData> m_iconDataList;

dde-clipboard/itemdelegate.cpp

@@ -3,9 +3,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "itemdelegate.h"
-#include "clipboardmodel.h"
-#include "itemdata.h"
-#include "iteminfo.h"
 #include "itemwidget.h"
 
 #include <QPointer>
@@ -16,24 +13,6 @@
 
 DWIDGET_USE_NAMESPACE
 
-static int caculateTextHeight(int width, int height)
-{
-    static const int textCenterWidth = ItemWidth - ContentMargin * 2;
-    int extraline = 0;
-    int over = width % textCenterWidth;
-    if (over != 0) {
-        extraline = 1;
-    }
-    auto caculated = width / textCenterWidth + extraline;
-    int toShow = caculated > 4 ? 4 : caculated;
-    return toShow * height;
-}
-
-static int getItemHeight(int width, int height)
-{
-    return ItemTitleHeight + ItemStatusBarHeight + TextContentTopMargin + caculateTextHeight(width, height);
-}
-
 ItemDelegate::ItemDelegate(QObject *parent)
     : QStyledItemDelegate(parent)
 {
@@ -59,32 +38,19 @@ QWidget *ItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem
 
 QSize ItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
-    Q_UNUSED(option);
-    Q_UNUSED(index);
-
     QPointer<ItemData> data = index.data().value<QPointer<ItemData>>();
-    if (data->type() == DataType::Text) {
-        QString text = data->text().simplified();
-        int height = option.fontMetrics.height();
-        int width = option.fontMetrics.horizontalAdvance(text);
-        return QSize(ItemWidth, ItemMargin + getItemHeight(width, height));
-    }
-    return QSize(ItemWidth, ItemHeight + ItemMargin);
+    int height = option.fontMetrics.height();
+
+    return data->sizeHint(height);
 }
 
 void ItemDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     Q_UNUSED(index);
     QRect rect = option.rect;
     QPointer<ItemData> data = index.data().value<QPointer<ItemData>>();
-    if (data->type() == DataType::Text) {
-        QString text = data->text().simplified();
-        int height = option.fontMetrics.height();
-        int width = option.fontMetrics.horizontalAdvance(text);
-        editor->setGeometry(rect.x() + ItemMargin, rect.y(), ItemWidth, getItemHeight(width, height));
-        return;
-    }
-    editor->setGeometry(rect.x() + ItemMargin, rect.y(), ItemWidth, ItemHeight);
+    int height = option.fontMetrics.height();
+    editor->setGeometry(rect.x() + ItemMargin, rect.y(), ItemWidth, data->itemHeight(height));
 }
 
 bool ItemDelegate::eventFilter(QObject *obj, QEvent *event)

dde-clipboard/itemwidget.cpp

@@ -50,7 +50,7 @@ ItemWidget::ItemWidget(QPointer<ItemData> data, QWidget *parent)
     , m_nameLabel(new DLabel(this))
     , m_timeLabel(new DLabel(this))
     , m_closeButton(new IconButton(this))
-    , m_contentLabel(new PixmapLabel(this))
+    , m_contentLabel(new PixmapLabel(data,this))
     , m_statusLabel(new DLabel(this))
     , m_refreshTimer(new QTimer(this))
 {
@@ -68,12 +68,15 @@ const QString &ItemWidget::text()
     return m_data->text();
 }
 
-void ItemWidget::setText(const QString &text, const QString &length)
+void ItemWidget::setTextShown(const QString &length)
 {
     QFont font = m_contentLabel->font();
+
     font.setItalic(true);
+
     m_contentLabel->setFont(font);
-    m_contentLabel->setText(text);
+
+    m_contentLabel->setText(true);
 
     m_statusLabel->setText(length);
 }
@@ -290,7 +293,7 @@ void ItemWidget::initData(QPointer<ItemData> data)
     setCreateTime(data->time());
     switch (data->type()) {
     case Text: {
-        setText(data->text(), data->subTitle());
+        setTextShown(data->subTitle());
     }
     break;
     case Image: {

dde-clipboard/itemwidget.h

@@ -33,7 +33,7 @@ class ItemWidget : public DWidget
      * \~chinese \brief 设置剪切块属性的接口
      */
     const QString& text();
-    void setText(const QString &text, const QString &length);
+    void setTextShown(const QString &length);
 
     void setThumnail(const QPixmap &pixmap/*未经处理的原图*/);
     void setThumnail(const FileIconData &data);