Added some parts of ctk lib.

As it looks now that lib contains way more then I want to pull in so i'm just copying the files i'm interested in.
2017-12-29 08:35:57 +01:00 · 2017-12-29 08:35:57 +01:00 · 3a425ab7c1
commit 3a425ab7c1
parent a06c752029
11 changed files with 2162 additions and 2 deletions
--- a/ctk/ctkWidgetsUtils.cpp
+++ b/ctk/ctkWidgetsUtils.cpp
@ -0,0 +1,115 @@
+/*=========================================================================
+
+  Library:   CTK
+
+  Copyright (c) Kitware Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0.txt
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+=========================================================================*/
+
+// Qt includes
+#include <QBuffer>
+#include <QImage>
+//#include <QGLWidget>
+#include <QPainter>
+#include <QWidget>
+
+// ctkWidgets includes
+#include "ctkWidgetsUtils.h"
+
+//----------------------------------------------------------------------------
+QString ctk::base64HTMLImageTagSrc(const QImage& image)
+{
+  QByteArray byteArray;
+  QBuffer buffer(&byteArray);
+  buffer.open(QIODevice::WriteOnly);
+  image.save(&buffer, "PNG");
+  return QString("data:image/png;base64,%1")
+    .arg(QString(buffer.data().toBase64()));
+}
+
+//----------------------------------------------------------------------------
+//QImage ctk::grabWidget(QWidget* widget, QRect rectangle)
+//{
+//  if (!widget)
+//    {
+//    return QImage();
+//    }
+//  if (!rectangle.isValid())
+//    {
+//    // Let Qt trigger layout mechanism and compute widget size.
+//    rectangle = QRect(0,0,-1,-1);
+//    }
+//#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
+//  QPixmap widgetPixmap = QPixmap::grabWidget(widget, rectangle);
+//#else
+//  QPixmap widgetPixmap = widget->grab(rectangle);
+//#endif
+//  QImage widgetImage = widgetPixmap.toImage();
+//  QPainter painter;
+//  painter.begin(&widgetImage);
+//  foreach(QGLWidget* glWidget, widget->findChildren<QGLWidget*>())
+//    {
+//    if (!glWidget->isVisible())
+//      {
+//      continue;
+//      }
+//    QRect subWidgetRect = QRect(glWidget->mapTo(widget, QPoint(0,0)), glWidget->size());
+//    if (!rectangle.intersects(subWidgetRect))
+//      {
+//      continue;
+//      }
+//    QImage subImage = glWidget->grabFrameBuffer();
+//    painter.drawImage(subWidgetRect, subImage);
+//    }
+//  painter.end();
+//  return widgetImage;
+//}
+
+//----------------------------------------------------------------------------
+QImage ctk::kwIconToQImage(const unsigned char *data, int width, int height, int pixelSize, unsigned int bufferLength, int options)
+{
+  Q_UNUSED(options); // not yet supported
+
+  QByteArray imageData = QByteArray::fromRawData(
+    reinterpret_cast<const char *>(data), bufferLength);
+  unsigned int expectedLength = width * height * pixelSize;
+  // Start with a zlib header ? If not, then it must be base64 encoded
+  if (bufferLength != expectedLength &&
+      static_cast<unsigned char>(imageData[0]) != 0x78 &&
+      static_cast<unsigned char>(imageData[1]) != 0xDA)
+    {
+    imageData = QByteArray::fromBase64(imageData);
+    bufferLength = imageData.size();
+    }
+
+  if (bufferLength != expectedLength &&
+      static_cast<unsigned char>(imageData[0]) == 0x78 &&
+      static_cast<unsigned char>(imageData[1]) == 0xDA)
+    {
+    imageData.prepend(static_cast<char>((expectedLength >> 0) & 0xFF));
+    imageData.prepend(static_cast<char>((expectedLength >> 8) & 0xFF));
+    imageData.prepend(static_cast<char>((expectedLength >> 16) & 0xFF));
+    imageData.prepend(static_cast<char>((expectedLength >> 24) & 0xFF));
+    imageData = qUncompress(imageData);
+    }
+  QImage image(reinterpret_cast<unsigned char*>(imageData.data()),
+               width, height, width * pixelSize,
+               pixelSize == 4 ? QImage::Format_ARGB32 : QImage::Format_RGB888);
+  if (pixelSize == 4)
+    {
+    return image.rgbSwapped();
+    }
+  return image.copy();
+}