File indexing completed on 2024-05-12 15:54:18

 /*
  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * This program 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 2 of
  * the License, or (at your option) any later version.
  *
  * This program 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 <https://www.gnu.org/licenses/>.
  */
 
 #ifndef NULL_PAINT_DEVICE_H
 #define NULL_PAINT_DEVICE_H
 
 #include <QPaintDevice>
 #include <QPaintEngine>
 
 namespace KChart
 {
     class NullPaintEngine : public QPaintEngine
     {
     public:
         virtual bool begin(QPaintDevice * /*pdev*/) { return true; }
         virtual void drawEllipse(const QRectF & /*rect*/) { }
         virtual void drawEllipse(const QRect & /*rect*/) { }
         virtual void drawImage(const QRectF & /*rectangle*/, const QImage & /*image*/, const QRectF & /*sr*/, Qt::ImageConversionFlags /*flags*/) { }
         virtual void drawLines(const QLineF * /*lines*/, int /*lineCount*/) { }
         virtual void drawLines(const QLine * /*lines*/, int /*lineCount*/) { }
         virtual void drawPath(const QPainterPath & /*path*/) { }
         virtual void drawPixmap(const QRectF & /*r*/, const QPixmap & /*pm*/, const QRectF & /*sr*/) { }
         virtual void drawPoints(const QPointF * /*points*/, int /*pointCount*/) { }
         virtual void drawPoints(const QPoint * /*points*/, int /*pointCount*/) { }
         virtual void drawPolygon(const QPointF * /*points*/, int /*pointCount*/, PolygonDrawMode /*mode*/) { }
         virtual void drawPolygon(const QPoint * /*points*/, int /*pointCount*/, PolygonDrawMode /*mode*/) { }
         virtual void drawRects(const QRectF * /*rects*/, int /*rectCount*/) { }
         virtual void drawRects(const QRect * /*rects*/, int /*rectCount*/) { }
         virtual void drawTextItem(const QPointF & /*p*/, const QTextItem & /*textItem*/) { }
         virtual void drawTiledPixmap(const QRectF & /*rect*/, const QPixmap & /*pixmap*/, const QPointF & /*p*/) { }
         virtual bool end()  { return true; }
 
         virtual Type type() const { return QPaintEngine::User; }
         virtual void updateState(const QPaintEngineState & /*state*/) { }
     };
 
     class NullPaintDevice : public QPaintDevice
     {
     public:
         NullPaintDevice(const QSize& size) : m_size(size) { }
         ~NullPaintDevice() { }
 
         int metric(PaintDeviceMetric metric) const
         {
             switch (metric)
             {
             case QPaintDevice::PdmWidth:
                 return m_size.width();
             case QPaintDevice::PdmHeight:
                 return m_size.height();
             case QPaintDevice::PdmWidthMM:
                 return 1;
             case QPaintDevice::PdmHeightMM:
                 return 1;
             case QPaintDevice::PdmNumColors:
                 return int((uint)(-1));
             case QPaintDevice::PdmDepth:
                 return 1;
             case QPaintDevice::PdmDpiX:
                 return 1;
             case QPaintDevice::PdmDpiY:
                 return 1;
             case QPaintDevice::PdmPhysicalDpiX:
                 return 1;
             case QPaintDevice::PdmPhysicalDpiY:
                 return 1;
 #if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
             case QPaintDevice::PdmDevicePixelRatio:
                 return 1;
 #endif
             }
             return 1;
         }
 
         QPaintEngine* paintEngine() const
         {
             static NullPaintEngine nullPaintEngine;
             return &nullPaintEngine;
         }
 
     private:
         QSize m_size;
     };
 
 }
 
 #endif