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

   1 #include "imageviewer.h"
   2 #include "pixelwidget.h"
   3 #include "apisurface.h"
   4
   5 #include "image/image.hpp"
   6
   7 #include <QDebug>
   8 #include <QDesktopWidget>
   9 #include <QPainter>
  10 #include <QPixmap>
  11 #include <QScrollBar>
  12
  13 ImageViewer::ImageViewer(QWidget *parent)
  14     : QDialog(parent),
  15       m_image(0)
  16 {
  17     setupUi(this);
  18
  19     connect(lowerSpinBox, SIGNAL(valueChanged(double)),
  20             SLOT(slotUpdate()));
  21     connect(upperSpinBox, SIGNAL(valueChanged(double)),
  22             SLOT(slotUpdate()));
  23     connect(flipCheckBox, SIGNAL(stateChanged(int)),
  24             SLOT(slotUpdate()));
  25     connect(opaqueCheckBox, SIGNAL(stateChanged(int)),
  26             SLOT(slotUpdate()));
  27     connect(alphaCheckBox, SIGNAL(stateChanged(int)),
  28             SLOT(slotUpdate()));
  29
  30     QPixmap px(32, 32);
  31     QPainter p(&px);
  32     p.fillRect(0, 0, 32, 32, Qt::white);
  33     p.fillRect(0, 0, 16, 16, QColor(193, 193, 193));
  34     p.fillRect(16, 16, 16, 16, QColor(193, 193, 193));
  35     p.end();
  36     QPalette pal = scrollAreaWidgetContents->palette();
  37     pal.setBrush(QPalette::Background,
  38                  QBrush(px));
  39     pal.setBrush(QPalette::Base,
  40                  QBrush(px));
  41     scrollAreaWidgetContents->setPalette(pal);
  42
  43     m_pixelWidget = new PixelWidget(scrollAreaWidgetContents);
  44     verticalLayout_2->addWidget(m_pixelWidget);
  45
  46     rectLabel->hide();
  47     pixelLabel->hide();
  48
  49     connect(m_pixelWidget, SIGNAL(zoomChanged(int)),
  50             zoomSpinBox, SLOT(setValue(int)));
  51     connect(zoomSpinBox, SIGNAL(valueChanged(int)),
  52             m_pixelWidget, SLOT(setZoom(int)));
  53     connect(m_pixelWidget, SIGNAL(mousePosition(int, int)),
  54             this, SLOT(showPixel(int, int)));
  55     connect(m_pixelWidget, SIGNAL(gridGeometry(const QRect &)),
  56             this, SLOT(showGrid(const QRect &)));
  57 }
  58
  59 ImageViewer::~ImageViewer()
  60 {
  61     delete m_image;
  62 }
  63
  64 void ImageViewer::setBase64Data(const QByteArray &base64)
  65 {
  66     delete m_image;
  67     m_image = ApiSurface::imageFromBase64(base64);
  68     m_convertedImage = ApiSurface::qimageFromRawImage(m_image);
  69     m_pixelWidget->setSurface(m_convertedImage);
  70     updateGeometry();
  71 }
  72
  73 void ImageViewer::slotUpdate()
  74 {
  75     m_convertedImage =
  76         m_convertedImage.mirrored(false, flipCheckBox->isChecked());
  77
  78     double lowerValue = lowerSpinBox->value();
  79     double upperValue = upperSpinBox->value();
  80
  81     bool opaque = opaqueCheckBox->isChecked();
  82     bool alpha  = alphaCheckBox->isChecked();
  83
  84     m_convertedImage = ApiSurface::qimageFromRawImage(m_image,
  85                                                       lowerValue, upperValue,
  86                                                       opaque, alpha);
  87
  88     if (flipCheckBox->isChecked()) {
  89         m_convertedImage = m_convertedImage.mirrored(false, true);
  90     }
  91
  92     m_pixelWidget->setSurface(m_convertedImage);
  93
  94     updateGeometry();
  95 }
  96
  97 QSize ImageViewer::sizeHint() const
  98 {
  99     QSize size;
 100
 101     int vScrollWidth = scrollArea->verticalScrollBar() ?
 102                 scrollArea->verticalScrollBar()->width() : 0;
 103     int hScrollHeight = scrollArea->horizontalScrollBar() ?
 104                 scrollArea->horizontalScrollBar()->height() : 0;
 105     QSize optimalWindowSize(m_convertedImage.width() + vScrollWidth,
 106                             m_convertedImage.height() + hScrollHeight);
 107
 108     QRect screenRect = QApplication::desktop()->availableGeometry();
 109     const float maxPercentOfDesktopSpace = 0.8f;
 110     QSize maxAvailableSize(maxPercentOfDesktopSpace * screenRect.width(),
 111                            maxPercentOfDesktopSpace * screenRect.height());
 112
 113     return QSize(qMin(optimalWindowSize.width(), maxAvailableSize.width()),
 114                  qMin(optimalWindowSize.height(), maxAvailableSize.height()));
 115 }
 116
 117 void ImageViewer::resizeEvent(QResizeEvent *e)
 118 {
 119     QWidget::resizeEvent(e);
 120 }
 121
 122 template <class T>
 123 QString createPixelLabel(image::Image *img, int x, int y)
 124 {
 125     QString pixelLabel;
 126     unsigned char *pixelLocation = 0;
 127     T *pixel;
 128
 129     pixelLocation = img->pixels + img->stride() * y;
 130     pixelLocation += x * img->bytesPerPixel;
 131     pixel = ((T*)pixelLocation);
 132
 133     pixelLabel += QLatin1String("[");
 134     pixelLabel += QString::fromLatin1("%1").arg(pixel[0]);
 135
 136     for (int channel = 1; channel < img->channels; ++channel) {
 137         pixelLabel += QString::fromLatin1(", %1").arg(pixel[channel]);
 138     }
 139     pixelLabel += QLatin1String("]");
 140
 141     return pixelLabel;
 142 }
 143
 144 void ImageViewer::showPixel(int x, int y)
 145 {
 146     xSpinBox->setValue(x);
 147     ySpinBox->setValue(y);
 148
 149     if (!m_image)
 150         return;
 151
 152     QString label = tr("Pixel: ");
 153
 154     /* If the image is flipped, substitute y to match */
 155     if (flipCheckBox->isChecked()) {
 156         y = m_convertedImage.height() - y - 1;
 157     }
 158
 159     if (m_image->channelType == image::TYPE_UNORM8) {
 160         label += createPixelLabel<unsigned char>(m_image, x, y);
 161     } else {
 162         label += createPixelLabel<float>(m_image, x, y);
 163     }
 164
 165     pixelLabel->setText(label);
 166     pixelLabel->show();
 167 }
 168
 169 void ImageViewer::showGrid(const QRect &rect)
 170 {
 171     if (rect.isEmpty()) {
 172         rectLabel->hide();
 173         return;
 174     }
 175     rectLabel->setText(tr("Grid: [%1, %2, %3, %4]")
 176                        .arg(rect.x())
 177                        .arg(rect.y())
 178                        .arg(rect.width())
 179                        .arg(rect.height()));
 180     rectLabel->show();
 181 }
 182
 183 #include "imageviewer.moc"