Added inlineImageTag() function.

Vairsly · Mar 12, 2016 · 24a2eb1 · 24a2eb1
1 parent d6a52ae
commit 24a2eb1
Show file tree

Hide file tree

Showing 2 changed files with 73 additions and 0 deletions.
diff --git a/src/tviewhelper.cpp b/src/tviewhelper.cpp
@@ -478,6 +478,44 @@ QString TViewHelper::imageTag(const QString &src, bool withTimestamp,
     return selfClosingTag("img", attr);
 }
 
+
+QString TViewHelper::inlineImageTag(const QFileInfo &file, const QString &mediaType,
+                                    const QSize &size, const QString &alt,
+                                    const THtmlAttribute &attributes) const
+{
+    QByteArray data;
+    QFile img(file.absoluteFilePath());
+    if (img.open(QIODevice::ReadOnly)) {
+        data = img.readAll();
+        img.close();
+    }
+    return inlineImageTag(data, mediaType, size, alt, attributes);
+}
+
+
+QString TViewHelper::inlineImageTag(const QByteArray &data, const QString &mediaType,
+                                    const QSize &size, const QString &alt,
+                                    const THtmlAttribute &attributes) const
+{
+    THtmlAttribute attr = attributes;
+    if (!alt.isEmpty()) {
+        attr.prepend("alt", alt);
+    } else {
+        attr.prepend("alt", "");  // output 'alt' always
+    }
+
+    if (!size.isEmpty()) {
+        attr.prepend("height", QString::number(size.height()));
+        attr.prepend("width", QString::number(size.width()));
+    }
+
+    QByteArray dataUrl = "data:";
+    dataUrl += mediaType.toLatin1() + ";base64,";
+    dataUrl += data.toBase64();
+    attr.prepend("src", dataUrl);
+    return selfClosingTag("img", attr);
+}
+
 /*!
   Creates a \<link\> link tag for a style sheet with href=\a "src". The
   \a src must be one of URL, a absolute path or a relative path. If \a src

diff --git a/src/tviewhelper.h b/src/tviewhelper.h
@@ -7,6 +7,7 @@
 #include <QPoint>
 #include <QSize>
 #include <QPair>
+#include <QFileInfo>
 #include <TGlobal>
 #include <THtmlAttribute>
 
@@ -142,6 +143,20 @@ class T_CORE_EXPORT TViewHelper
 
     QString imageTag(const QString &src, const THtmlAttribute &attributes) const;
 
+    QString inlineImageTag(const QFileInfo &file, const QString &mediaType,
+                           const QSize &size = QSize(), const QString &alt = QString(),
+                           const THtmlAttribute &attributes = THtmlAttribute()) const;
+
+    QString inlineImageTag(const QFileInfo &file, const QString &mediaType,
+                           const THtmlAttribute &attributes) const;
+
+    QString inlineImageTag(const QByteArray &data, const QString &mediaType,
+                           const QSize &size = QSize(), const QString &alt = QString(),
+                           const THtmlAttribute &attributes = THtmlAttribute()) const;
+
+    QString inlineImageTag(const QByteArray &data, const QString &mediaType,
+                           const THtmlAttribute &attributes) const;
+
     QString imageLinkTo(const QString &src, const QUrl &url, const QSize &size = QSize(),
                         const QString &alt = QString(), const THtmlAttribute &attributes = THtmlAttribute()) const;  // obsolete
     QString imageLinkTo(const QUrl &url, const QString &src, bool withTimestamp,
@@ -348,4 +363,24 @@ inline QString TViewHelper::imageLinkTo(const QUrl &url, const QString &src, con
     return imageLinkTo(url, src, false, QString(), attributes);
 }
 
+/*!
+  \fn QString TViewHelper::inlineImageTag(const QString &filePath, const QString &mediaType, const THtmlAttribute &attributes) const
+  Creates a inline image tag with data of \a filePath and \a mediaType.
+ */
+inline QString TViewHelper::inlineImageTag(const QFileInfo &file, const QString &mediaType,
+                                           const THtmlAttribute &attributes) const
+{
+    return inlineImageTag(file, mediaType, QSize(), QString(), attributes);
+}
+
+/*!
+  \fn QString TViewHelper::inlineImageTag(const QByteArray &data, const QString &mediaType, const THtmlAttribute &attributes) const
+  Creates a inline image tag with \a data and \a mediaType.
+ */
+inline QString TViewHelper::inlineImageTag(const QByteArray &data, const QString &mediaType,
+                                           const THtmlAttribute &attributes) const
+{
+    return inlineImageTag(data, mediaType, QSize(), QString(), attributes);
+}
+
 #endif // TVIEWHELPER_H