git.cworth.org Git - apitrace/blob - gui/imageviewer.cpp

   1 #include "imageviewer.h"
   2
   3 #include <QDesktopWidget>
   4 #include <QPainter>
   5 #include <QPixmap>
   6 #include <QScrollBar>
   7
   8 ImageViewer::ImageViewer(QWidget *parent)
   9     : QDialog(parent)
  10 {
  11     setupUi(this);
  12
  13     QPixmap px(32, 32);
  14     QPainter p(&px);
  15     p.fillRect(0, 0, 32, 32, Qt::white);
  16     p.fillRect(0, 0, 16, 16, QColor(193, 193, 193));
  17     p.fillRect(16, 16, 16, 16, QColor(193, 193, 193));
  18     p.end();
  19     QPalette pal = scrollAreaWidgetContents->palette();
  20     pal.setBrush(QPalette::Background,
  21                  QBrush(px));
  22     pal.setBrush(QPalette::Base,
  23                  QBrush(px));
  24     scrollAreaWidgetContents->setPalette(pal);
  25 }
  26
  27 void ImageViewer::setImage(const QImage &image)
  28 {
  29     m_image = image;
  30     QPixmap px = QPixmap::fromImage(image);
  31     imageLabel->setPixmap(px);
  32     updateGeometry();
  33 }
  34
  35 QSize ImageViewer::sizeHint() const
  36 {
  37     QSize size;
  38
  39     int vScrollWidth = scrollArea->verticalScrollBar() ?
  40                 scrollArea->verticalScrollBar()->width() : 0;
  41     int hScrollHeight = scrollArea->horizontalScrollBar() ?
  42                 scrollArea->horizontalScrollBar()->height() : 0;
  43     QSize optimalWindowSize(m_image.width() + vScrollWidth,
  44                             m_image.height() + hScrollHeight);
  45
  46     QRect screenRect = QApplication::desktop()->availableGeometry();
  47     const float maxPercentOfDesktopSpace = 0.8;
  48     QSize maxAvailableSize(maxPercentOfDesktopSpace * screenRect.width(),
  49                            maxPercentOfDesktopSpace * screenRect.height());
  50
  51     return QSize(qMin(optimalWindowSize.width(), maxAvailableSize.width()),
  52                  qMin(optimalWindowSize.height(), maxAvailableSize.height()));
  53 }
  54
  55 #include "imageviewer.moc"