// ---------------------------------------------------------------------------
// Name: acCustomGraphicsView::mousePressEvent
// Description: captures mouse press events on a view
// checks if an image is under the mouse
// and determins if user want to move an item
// or send a message to reset a view
// Arguments: QMouseEvent *event
// Return Val:
// Date: 4/9/2015
// ---------------------------------------------------------------------------
void acCustomGraphicsView::mousePressEvent(QMouseEvent *event)
{
QGraphicsItem * itemPicked = itemAt(event->pos());
// Found an item under the cursor
if (itemPicked)
{
// Is the item our custome image
if (itemPicked->type() == (itemPicked->UserType + acCustomGraphicsTypes::IMAGE))
{
// User pressed the left mouse change its widget to Hand Cursor
if (event->button() == Qt::LeftButton) {
setCursor(Qt::ClosedHandCursor);
mousechanged = true;
emit OnMouseHandDown();
}
}
// Item is Navigation and user selected Alt+left mouse Click
// to resize the Image to fit current view window
if (itemPicked->type() == (itemPicked->UserType + acCustomGraphicsTypes::NAVIGATION_IMAGE))
{
if ((event->button() == Qt::LeftButton) && (event->modifiers() == Qt::ShiftModifier)) {
emit resetImageView();
}
}
}
QGraphicsView::mousePressEvent(event);
}
// ---------------------------------------------------------------------------
// Name: acImageView::acImageView
// Description: Constructor
// builds a QGraphics based image viewer widget that contains
// a navigation view default (lower right corner)
// Date: 13/8/2015
// ---------------------------------------------------------------------------
acImageView::acImageView(const QString filePathName, QWidget *parent, QImage** image, CMipImages *MipImages)
{
Q_UNUSED(parent);
Q_UNUSED(image);
m_MipImages = MipImages;
m_layout = new QGridLayout(this);
m_layout->setSpacing(0);
m_layout->setMargin(0);
m_layout->setContentsMargins(0, 0, 0, 0);
m_imageGraphicsView = NULL;
m_graphicsScene = NULL;
m_imageItem = NULL;
m_imageItemNav = NULL;
//Reserved: GPUDecode
m_navVisible = false;
m_imageOrientation = 0;
m_ImageScale = 100;
m_MouseHandDown = false;
// Display if we have images
if (m_MipImages)
{
if (m_MipImages->Image_list.count() > 0)
{
// The scene is at 0,0 and set to the size of this display widget
m_graphicsScene = new acCustomGraphicsScene(this);
QSize size = this->size();
m_graphicsScene->setSceneRect(0, 0, size.width(), size.height());
m_graphicsScene->setBackgroundBrush(QBrush(Qt::black, Qt::SolidPattern));
//==========================
// Add a QImage to the scene
//
// An image item this is been used for the main view
// Note if a compressed image is loaded ie BCn DDS file
// We will still have a default image file that is used as a temp
// The temp file is loaded via resource file ie: ":/CompressonatorGUI/Images/CompressedImageError.png"
//==========================
m_ImageIndex = 0;
QImage *image = m_MipImages->Image_list[m_ImageIndex];
QPixmap pixmap = QPixmap::fromImage(*image);
m_imageItem = new acCustomGraphicsImageItem(pixmap);
m_imageItem->ID = m_graphicsScene->ID;
m_imageItem->setFlags(QGraphicsItem::ItemIsSelectable);
m_graphicsScene->addItem(m_imageItem);
m_imageItem->setVisible(true);
#ifdef ENABLE_NAVIGATION
// Copy of the image view item (ToDo->Scale down to fit a smalled size)
// it will be positioned to bottom left corner of the graphics view
// and hidden by default, the view toggles on or off based on when
// a navigateButton is clicked
m_imageItemNav = new acCustomGraphicsNavImageItem(QPixmap::fromImage((*image)));
m_imageItemNav->ID = m_graphicsScene->ID;
m_imageItemNav->setVisible(false);
m_imageItemNav->setFlags(QGraphicsItem::ItemIsSelectable);
m_graphicsScene->addItem(m_imageItemNav);
m_navigateButton = new QPushButton();
if (m_MipImages->MIPS2QtFailed)
{
QString PushButtonStyle("QPushButton {background: red; border:none; margin: 0px; padding: 0px } QPushButton:hover {border:1px solid black}");
m_navigateButton->setStyleSheet(PushButtonStyle);
}
QPixmap pixmap(qt_navigate_png);
m_graphicsScene->addWidget(m_navigateButton);
// a scalled transparent window that is a child of the navigation view
// ToDo(s)
// 1. when its moved the view of the main image will pan to match the box area
// 2. scale the size of the box to that of acImageView widget size
// 3. Keep the bounds of the move within the navigation window
acCustomGraphicsNavWindow *m_navWindow = new acCustomGraphicsNavWindow(QRectF(0, 0, 50, 50), m_imageItemNav);
m_navWindow->ID = m_graphicsScene->ID;
m_navWindow->setFlags(QGraphicsItem::ItemIsSelectable | QGraphicsItem::ItemIsMovable);
m_navWindow->setOpacity(0.5);
m_navWindow->setPen(QPen(Qt::black));
m_navWindow->setBrush(Qt::white);
m_navigateButton->hide();
#endif
// The widget viewer for all of the items
m_imageGraphicsView = new acCustomGraphicsView();
m_imageGraphicsView->ID = m_graphicsScene->ID;
m_imageGraphicsView->setVisible(false);
m_imageGraphicsView->setScene(m_graphicsScene);
m_imageGraphicsView->setFrameShadow(QFrame::Raised);
m_imageGraphicsView->centerOn(0, 0);
m_layout->addWidget(m_imageGraphicsView, 0, 0);
m_imageGraphicsView->ensureVisible(m_imageItem);
m_imageGraphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
m_imageGraphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
m_xPos = m_imageGraphicsView->horizontalScrollBar();
if (m_xPos)
{
// These values should be refreshed each time the acImageView is resized
// for now we are obtaining the constructors defaults
m_defaultXPos_minimum = m_xPos->minimum();
m_defaultXPos_maximum = m_xPos->maximum();
}
m_yPos = m_imageGraphicsView->verticalScrollBar();
if (m_yPos)
{
// These values should be refreshed each time the acImageView is resized
// for now we are obtaining the constructors defaults
m_defaultYPos_minimum = m_yPos->minimum();
m_defaultYPos_maximum = m_yPos->maximum();
}
// Public : Events from acCustomGraphics
connect(m_graphicsScene, SIGNAL(sceneMousePosition(QPointF *, int)), this, SLOT(onacImageViewMousePosition(QPointF *, int)));
connect(m_imageGraphicsView, SIGNAL(resetImageView()), this, SLOT(onResetImageView()));
connect(m_imageGraphicsView, SIGNAL(OnMouseHandDown()), this, SLOT(onMouseHandDown()));
connect(m_imageGraphicsView, SIGNAL(OnMouseHandD()), this, SLOT(onMouseHandD()));
connect(m_imageGraphicsView, SIGNAL(OnWheelScaleUp(QPointF &)) , this, SLOT(onWheelScaleUp(QPointF &)));
connect(m_imageGraphicsView, SIGNAL(OnWheelScaleDown(QPointF &)), this, SLOT(onWheelScaleDown(QPointF &)));
#ifdef ENABLE_NAVIGATION
connect(m_navigateButton, SIGNAL(released()), this, SLOT(onNavigateClicked()));
#endif
//===============================
// Add a OpenGL Widget if needed
// to the GraphicsView
//===============================
if (
m_MipImages
&&
(m_MipImages->m_MipImageFormat == MIPIMAGE_FORMAT::Format_OpenGL)
)
{
if (m_MipImages->mipset)
{
if (m_MipImages->mipset->m_compressed)
{
//Reserved: GPUDecode
}
}
}
//==========================
// Add a image data Table
// to the GraphicsView
//==========================
if (m_MipImages->m_Error == MIPIMAGE_FORMAT_ERRORS::Format_NoErrors)
{
QRect ImageSize = image->rect();
m_myModel = new acTableImageDataModel(ImageSize.height(), ImageSize.width(), this);
m_tableView = new QTableView(this);
m_tableView->setAutoScroll(true);
m_tableView->setModel(m_myModel);
QWidget *newWidget = new QWidget();
QHBoxLayout *layout = new QHBoxLayout();
layout->addWidget(m_tableView);
newWidget->setLayout(layout);
m_graphicsScene->addWidget(newWidget);
m_tableViewitem = m_imageGraphicsView->itemAt(0, 0);
if (m_tableViewitem)
{
m_tableViewitem->setOpacity(0.75);
m_tableViewitem->hide();
}
}
else
{
m_tableViewitem = NULL;
m_tableView = NULL;
}
//===============================
// TopMost Layer: Mouse
//===============================
m_linex = new QGraphicsLineItem();
m_graphicsScene->addItem(m_linex);
m_linex->setLine(0, 0, CURSOR_SIZE * 2, 0);
m_liney = new QGraphicsLineItem();
m_graphicsScene->addItem(m_liney);
m_liney->setLine(0, 0, 0, CURSOR_SIZE * 2);
QPen pen(Qt::white);
m_linex->setPen(pen);
m_liney->setPen(pen);
m_linex->hide();
m_liney->hide();
//=============================
// Set Visable items
//=============================
m_imageGraphicsView->setVisible(true);
ManageScrollBars();
}
}
