gui: show the original pixel values in the surface viewer

[apitrace] / gui / imageviewer.cpp

diff --git a/gui/imageviewer.cpp b/gui/imageviewer.cpp
index 0e0657a3d60e265cd5d20c85815e69f881933e21..a795993fb6c7b538128e477e3b625cbff9f0a4fc 100644 (file)
--- a/gui/imageviewer.cpp
+++ b/gui/imageviewer.cpp
@@ -1,4 +1,8 @@
 #include "imageviewer.h"
+#include "pixelwidget.h"
+#include "apisurface.h"
+
+#include "image/image.hpp"
 
 #include <QDebug>
 #include <QDesktopWidget>
@@ -7,7 +11,8 @@
 #include <QScrollBar>
 
 ImageViewer::ImageViewer(QWidget *parent)
-    : QDialog(parent)
+    : QDialog(parent),
+      m_image(0)
 {
     setupUi(this);
 
@@ -34,14 +39,34 @@ ImageViewer::ImageViewer(QWidget *parent)
     pal.setBrush(QPalette::Base,
                  QBrush(px));
     scrollAreaWidgetContents->setPalette(pal);
+
+    m_pixelWidget = new PixelWidget(scrollAreaWidgetContents);
+    verticalLayout_2->addWidget(m_pixelWidget);
+
+    rectLabel->hide();
+    pixelLabel->hide();
+
+    connect(m_pixelWidget, SIGNAL(zoomChanged(int)),
+            zoomSpinBox, SLOT(setValue(int)));
+    connect(zoomSpinBox, SIGNAL(valueChanged(int)),
+            m_pixelWidget, SLOT(setZoom(int)));
+    connect(m_pixelWidget, SIGNAL(mousePosition(int, int)),
+            this, SLOT(showPixel(int, int)));
+    connect(m_pixelWidget, SIGNAL(gridGeometry(const QRect &)),
+            this, SLOT(showGrid(const QRect &)));
 }
 
-void ImageViewer::setImage(const QImage &image)
+ImageViewer::~ImageViewer()
 {
-    m_image = image;
-    m_temp = m_image;
-    QPixmap px = QPixmap::fromImage(m_temp);
-    imageLabel->setPixmap(px);
+    delete m_image;
+}
+
+void ImageViewer::setBase64Data(const QByteArray &base64)
+{
+    delete m_image;
+    m_image = ApiSurface::imageFromBase64(base64);
+    m_convertedImage = ApiSurface::qimageFromRawImage(m_image);
+    m_pixelWidget->setSurface(m_convertedImage);
     updateGeometry();
 }
 
@@ -58,7 +83,8 @@ static inline int clamp(int x)
 
 void ImageViewer::slotUpdate()
 {
-    m_temp = m_image.mirrored(false, flipCheckBox->isChecked());
+    m_convertedImage =
+        m_convertedImage.mirrored(false, flipCheckBox->isChecked());
 
     double lowerValue = lowerSpinBox->value();
     double upperValue = upperSpinBox->value();
@@ -77,7 +103,8 @@ void ImageViewer::slotUpdate()
         int offset = - lowerValue * 255;
         int scale = 256 / (upperValue - lowerValue);
 
-        m_temp = m_temp.convertToFormat(QImage::Format_ARGB32);
+        m_convertedImage =
+            m_convertedImage.convertToFormat(QImage::Format_ARGB32);
 
         if (0) {
             qDebug()
@@ -85,13 +112,13 @@ void ImageViewer::slotUpdate()
                 << "scale = " << scale << "\n";
         }
 
-        int width = m_temp.width();
-        int height = m_temp.height();
+        int width = m_convertedImage.width();
+        int height = m_convertedImage.height();
 
         int aMask = opaque ? 0xff : 0;
 
         for (int y = 0; y < height; ++y) {
-            QRgb *scanline = (QRgb *)m_temp.scanLine(y);
+            QRgb *scanline = (QRgb *)m_convertedImage.scanLine(y);
             for (int x = 0; x < width; ++x) {
                 QRgb pixel = scanline[x];
                 int r = qRed(pixel);
@@ -112,8 +139,7 @@ void ImageViewer::slotUpdate()
         }
     }
 
-    QPixmap px = QPixmap::fromImage(m_temp);
-    imageLabel->setPixmap(px);
+    m_pixelWidget->setSurface(m_convertedImage);
 
     updateGeometry();
 }
@@ -126,11 +152,11 @@ QSize ImageViewer::sizeHint() const
                 scrollArea->verticalScrollBar()->width() : 0;
     int hScrollHeight = scrollArea->horizontalScrollBar() ?
                 scrollArea->horizontalScrollBar()->height() : 0;
-    QSize optimalWindowSize(m_image.width() + vScrollWidth,
-                            m_image.height() + hScrollHeight);
+    QSize optimalWindowSize(m_convertedImage.width() + vScrollWidth,
+                            m_convertedImage.height() + hScrollHeight);
 
     QRect screenRect = QApplication::desktop()->availableGeometry();
-    const float maxPercentOfDesktopSpace = 0.8;
+    const float maxPercentOfDesktopSpace = 0.8f;
     QSize maxAvailableSize(maxPercentOfDesktopSpace * screenRect.width(),
                            maxPercentOfDesktopSpace * screenRect.height());
 
@@ -138,4 +164,65 @@ QSize ImageViewer::sizeHint() const
                  qMin(optimalWindowSize.height(), maxAvailableSize.height()));
 }
 
+void ImageViewer::resizeEvent(QResizeEvent *e)
+{
+    QWidget::resizeEvent(e);
+}
+
+template <class T>
+QString createPixelLabel(image::Image *img, int x, int y)
+{
+    QString pixelLabel;
+    unsigned char *pixelLocation = 0;
+    T *pixel;
+
+    pixelLocation = img->pixels + img->stride() * y;
+    pixelLocation += x * img->bytesPerPixel;
+    pixel = ((T*)pixelLocation);
+
+    pixelLabel += QLatin1String("[");
+    pixelLabel += QString::fromLatin1("%1").arg(pixel[0]);
+
+    for (int channel = 1; channel < img->channels; ++channel) {
+        pixelLabel += QString::fromLatin1(", %1").arg(pixel[channel]);
+    }
+    pixelLabel += QLatin1String("]");
+
+    return pixelLabel;
+}
+
+void ImageViewer::showPixel(int x, int y)
+{
+    xSpinBox->setValue(x);
+    ySpinBox->setValue(y);
+
+    if (!m_image)
+        return;
+
+    QString label = tr("Pixel: ");
+
+    if (m_image->channelType == image::TYPE_UNORM8) {
+        label += createPixelLabel<unsigned char>(m_image, x, y);
+    } else {
+        label += createPixelLabel<float>(m_image, x, y);
+    }
+
+    pixelLabel->setText(label);
+    pixelLabel->show();
+}
+
+void ImageViewer::showGrid(const QRect &rect)
+{
+    if (rect.isEmpty()) {
+        rectLabel->hide();
+        return;
+    }
+    rectLabel->setText(tr("Grid: [%1, %2, %3, %4]")
+                       .arg(rect.x())
+                       .arg(rect.y())
+                       .arg(rect.width())
+                       .arg(rect.height()));
+    rectLabel->show();
+}
+
 #include "imageviewer.moc"