src/artisan/gviewport/RenderedImage.cpp

   1 /** Aesalon, a tool to visualize program behaviour in real time.
   2         Copyright (C) 2009-2011, Aesalon development team.
   3
   4         Aesalon is distributed under the terms of the GNU GPLv3. See
   5         the included file LICENSE for more information.
   6
   7         @file src/artisan/gviewport/RenderedImage.cpp
   8 */
   9
  10 #include <QPaintDevice>
  11 #include <QRect>
  12
  13 #include "artisan/gviewport/RenderedImage.h"
  14 #include "artisan/gviewport/CoordinateMapper.h"
  15
  16 #include "util/MessageSystem.h"
  17
  18 namespace Artisan {
  19 namespace GViewport {
  20
  21 RenderedImage::RenderedImage(const Rect &dataRange, const Rect &pixelSize)
  22         : m_dataRange(dataRange), m_pixelSize(pixelSize) {
  23
  24         m_image = QImage(m_pixelSize.width(), m_pixelSize.height(), QImage::Format_ARGB32);
  25
  26         m_image.fill(qRgb(qrand()%256, qrand()%256, qrand()%256));
  27
  28         m_painter = new QPainter();
  29 }
  30
  31 RenderedImage::~RenderedImage() {
  32         delete m_painter;
  33 }
  34
  35 void RenderedImage::merge(RenderedImage &other) {
  36         CoordinateMapper mapper(*this);
  37         Rect local = mapper.dataToPixel(other.dataRange());
  38         startPainting();
  39
  40         m_painter->drawImage(local.toQRect(), other.m_image);
  41
  42         stopPainting();
  43 }
  44
  45 void RenderedImage::startPainting() {
  46         m_painter->begin(&m_image);
  47 }
  48
  49 void RenderedImage::stopPainting() {
  50         m_painter->end();
  51 }
  52
  53 void RenderedImage::paintOnto(QPaintDevice *device) {
  54         QPainter painter(device);
  55         painter.drawImage(QRect(0, 0, device->width(), device->height()), m_image, m_image.rect());
  56 }
  57
  58 RenderedImage &RenderedImage::operator=(const RenderedImage &other) {
  59         m_dataRange = other.m_dataRange;
  60         m_pixelSize = other.m_pixelSize;
  61         m_image = other.m_image;
  62         return *this;
  63 }
  64
  65 } // namespace GViewport
  66 } // namespace Artisan