Initial commit (project based on widgets)

widgets/mtextedit.cpp

@@ -0,0 +1,101 @@
+/*
+    Copyright 2016 - 2017 Benjamin Vedder	benjamin@vedder.se
+
+    This file is part of VESC Tool.
+
+    VESC Tool is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    VESC Tool 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    */
+
+#include "mtextedit.h"
+#include <QTextDocument>
+#include <QTextCursor>
+#include <QImage>
+#include <QByteArray>
+#include <QBuffer>
+#include <stdlib.h>
+#include <QInputDialog>
+
+MTextEdit::MTextEdit(QWidget *parent) : QTextEdit(parent) {
+}
+
+bool MTextEdit::canInsertFromMimeData(const QMimeData *source) const {
+    return source->hasImage() || QTextEdit::canInsertFromMimeData(source);
+}
+
+void MTextEdit::insertFromMimeData(const QMimeData *source) {
+    if (source->hasImage()) {
+        QStringList formats = source->formats();
+        QString format;
+        for (int i=0; i<formats.size(); i++) {
+            if (formats[i] == "image/bmp")  { format = "BMP";  break; }
+            if (formats[i] == "image/jpeg") { format = "JPG";  break; }
+            if (formats[i] == "image/jpg")  { format = "JPG";  break; }
+            if (formats[i] == "image/gif")  { format = "GIF";  break; }
+            if (formats[i] == "image/png")  { format = "PNG";  break; }
+            if (formats[i] == "image/pbm")  { format = "PBM";  break; }
+            if (formats[i] == "image/pgm")  { format = "PGM";  break; }
+            if (formats[i] == "image/ppm")  { format = "PPM";  break; }
+            if (formats[i] == "image/tiff") { format = "TIFF"; break; }
+            if (formats[i] == "image/xbm")  { format = "XBM";  break; }
+            if (formats[i] == "image/xpm")  { format = "XPM";  break; }
+        }
+        if (!format.isEmpty()) {
+//          dropImage(qvariant_cast<QImage>(source->imageData()), format);
+            dropImage(qvariant_cast<QImage>(source->imageData()), "JPG");
+            return;
+        }
+    }
+    QTextEdit::insertFromMimeData(source);
+}
+
+QMimeData *MTextEdit::createMimeDataFromSelection() const {
+    return QTextEdit::createMimeDataFromSelection();
+}
+
+void MTextEdit::dropImage(const QImage& image, const QString& format) {
+    bool ok;
+    int w = QInputDialog::getInt(this, tr("Insert Image"),
+                                 tr("Enter image width to use (source width: %1)").arg(image.width()),
+                                 400, 5, 1920, 20, &ok);
+
+    if (ok) {
+        int h = (w * image.height()) / image.width();
+        QImage img1 = image.scaled(w, h, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+
+        QByteArray bytes;
+        QBuffer buffer(&bytes);
+        buffer.open(QIODevice::WriteOnly);
+
+        img1.save(&buffer, format.toLocal8Bit().data());
+        buffer.close();
+        QByteArray base64 = bytes.toBase64();
+        QByteArray base64l;
+        for (int i=0; i<base64.size(); i++) {
+            base64l.append(base64[i]);
+            if (i%80 == 0) {
+                base64l.append("\n");
+            }
+        }
+
+        QTextCursor cursor = textCursor();
+        QTextImageFormat imageFormat;
+        imageFormat.setWidth  ( img1.width() );
+        imageFormat.setHeight ( img1.height() );
+        imageFormat.setName   ( QString("data:image/%1;base64,%2")
+                                .arg(QString("%1.%2").arg(rand()).arg(format))
+                                .arg(base64l.data())
+                                );
+        cursor.insertImage    ( imageFormat );
+    }
+}