8 #include "EngaugeAssert.h" 9 #include "GraphicsItemsExtractor.h" 10 #include "GraphicsItemType.h" 11 #include "GraphicsView.h" 12 #include "LoadFileInfo.h" 14 #include "MainWindow.h" 16 #include <QApplication> 19 #include <QGraphicsPixmapItem> 20 #include <QGraphicsPolygonItem> 21 #include <QGraphicsScene> 23 #include <QMouseEvent> 25 #include "QtToString.h" 27 extern const QString AXIS_CURVE_NAME;
35 connect (
this, SIGNAL (
signalDraggedDigFile (QString)), &mainWindow, SLOT (slotFileOpenDraggedDigFile (QString)));
36 connect (
this, SIGNAL (
signalDraggedImage (QImage)), &mainWindow, SLOT (slotFileImportDraggedImage (QImage)));
37 connect (
this, SIGNAL (
signalDraggedImageUrl (QUrl)), &mainWindow, SLOT (slotFileImportDraggedImageUrl (QUrl)));
38 connect (
this, SIGNAL (
signalKeyPress (Qt::Key,
bool)), &mainWindow, SLOT (slotKeyPress (Qt::Key,
bool)));
39 connect (
this, SIGNAL (
signalMouseMove(QPointF)), &mainWindow, SLOT (slotMouseMove (QPointF)));
40 connect (
this, SIGNAL (
signalMousePress (QPointF)), &mainWindow, SLOT (slotMousePress (QPointF)));
41 connect (
this, SIGNAL (
signalMouseRelease (QPointF)), &mainWindow, SLOT (slotMouseRelease (QPointF)));
42 connect (
this, SIGNAL (
signalViewZoomIn ()), &mainWindow, SLOT (slotViewZoomInFromWheelEvent ()));
43 connect (
this, SIGNAL (
signalViewZoomOut ()), &mainWindow, SLOT (slotViewZoomOutFromWheelEvent ()));
45 setMouseTracking (
true);
46 setAcceptDrops (
true);
48 setRenderHints(QPainter::Antialiasing);
49 setBackgroundBrush (QBrush (QColor (Qt::gray)));
50 verticalScrollBar()->setCursor (QCursor (Qt::ArrowCursor));
51 horizontalScrollBar()->setCursor (QCursor (Qt::ArrowCursor));
54 setWhatsThis (tr (
"Main Window\n\n" 55 "After an image file is imported, or an Engauge Document opened, an image appears in this area. " 56 "Points are added to the image.\n\n" 57 "If the image is a graph with two axes and one or more curves, then three axis points must be " 58 "created along those axes. Just put two axis points on one axis and a third axis point on the other " 59 "axis, as far apart as possible for higher accuracy. Then curve points can be added along the curves.\n\n" 60 "If the image is a map with a scale to define length, then two axis points must be " 61 "created at either end of the scale. Then curve points can be added.\n\n" 62 "Zooming the image in or out is performed using any of several methods:\n" 63 "1) rotating the mouse wheel when the cursor is outside of the image\n" 64 "2) pressing the minus or plus keys\n" 65 "3) selecting a new zoom setting from the View/Zoom menu"));
68 GraphicsView::~GraphicsView()
74 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::contextMenuEvent" 75 <<
" selectedCount=" << scene()->selectedItems().count();
78 const QList<QGraphicsItem*> &items = scene()->selectedItems();
81 if (pointIdentifiers.count() > 0) {
90 AXIS_POINTS) && pointIdentifiers.count() == 1) {
98 QGraphicsView::contextMenuEvent (event);
103 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dragEnterEvent " << (
event->mimeData ()->hasUrls () ?
"urls" :
"non-urls");
105 if (event->mimeData ()->hasImage () ||
106 event->mimeData ()->hasUrls ()) {
107 event->acceptProposedAction();
113 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dragMoveEvent";
115 if (event->mimeData ()->hasImage () ||
116 event->mimeData ()->hasUrls ()) {
117 event->acceptProposedAction();
123 const QString MIME_FORMAT_TEXT_PLAIN (
"text/plain");
126 QList<QUrl> urlList =
event->mimeData ()->urls ();
128 QTextStream str (&urls);
129 QList<QUrl>::const_iterator itr;
130 for (itr = urlList.begin (); itr != urlList.end (); itr++) {
132 str <<
" url=" << url.toString () <<
" ";
135 QString textPlain (event->mimeData()->data (MIME_FORMAT_TEXT_PLAIN));
137 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dropEvent" 138 <<
" formats=(" <<
event->mimeData()->formats().join (
", ").toLatin1().data() <<
")" 139 <<
" hasUrls=" << (
event->mimeData()->hasUrls() ?
"yes" :
"no")
140 <<
" urlCount=" << urlList.count()
141 <<
" urls=(" << urls.toLatin1().data() <<
")" 142 <<
" text=" << textPlain.toLatin1().data()
143 <<
" hasImage=" << (
event->mimeData()->hasImage() ?
"yes" :
"no");
148 LOG4CPP_INFO_S ((*mainCat)) <<
"QGraphicsView::dropEvent dig file";
149 QUrl url (textPlain);
151 event->acceptProposedAction();
153 }
else if (event->mimeData ()->hasImage ()) {
156 QImage image = qvariant_cast<QImage> (
event->mimeData ()->imageData ());
157 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dropEvent image";
160 }
else if (event->mimeData ()->hasUrls () &&
161 urlList.count () > 0) {
165 QUrl url = urlList.at(0);
166 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dropEvent url=" << url.toString ().toLatin1 ().data ();
168 event->acceptProposedAction();
172 LOG4CPP_INFO_S ((*mainCat)) <<
"GraphicsView::dropEvent dropped";
173 QGraphicsView::dropEvent (event);
178 bool GraphicsView::inBounds (
const QPointF &posScreen)
180 QRectF boundingRect = scene()->sceneRect();
182 return 0 <= posScreen.x () &&
183 0 <= posScreen.y () &&
184 posScreen.x () < boundingRect.width() &&
185 posScreen.y () < boundingRect.height();
190 LOG4CPP_DEBUG_S ((*mainCat)) <<
"GraphicsView::keyPressEvent";
193 Qt::Key key = (Qt::Key) event->key();
195 bool atLeastOneSelectedItem = (scene ()->selectedItems ().count () > 0);
197 if (key == Qt::Key_Down ||
198 key == Qt::Key_Left ||
199 key == Qt::Key_Right ||
207 QGraphicsView::keyPressEvent (event);
217 QPointF posScreen = mapToScene (event->pos ());
219 if (!inBounds (posScreen)) {
222 posScreen = QPointF (-1.0, -1.0);
227 QGraphicsView::mouseMoveEvent (event);
232 LOG4CPP_DEBUG_S ((*mainCat)) <<
"GraphicsView::mousePressEvent";
234 QPointF posScreen = mapToScene (event->pos ());
236 if (!inBounds (posScreen)) {
239 posScreen = QPointF (-1.0, -1.0);
244 QGraphicsView::mousePressEvent (event);
249 LOG4CPP_DEBUG_S ((*mainCat)) <<
"GraphicsView::mouseReleaseEvent signalMouseRelease";
251 QPointF posScreen = mapToScene (event->pos ());
253 if (!inBounds (posScreen)) {
256 posScreen = QPointF (-1.0, -1.0);
262 int bitFlag = (
event->buttons () & Qt::RightButton);
263 bool isRightClick = (bitFlag != 0);
271 QGraphicsView::mouseReleaseEvent (event);
274 QStringList GraphicsView::pointIdentifiersFromSelection (
const QList<QGraphicsItem*> &items)
const 278 QStringList pointIdentifiers;
280 QList<QGraphicsItem*>::const_iterator itr;
281 for (itr = items.begin(); itr != items.end(); itr++) {
283 QGraphicsItem *item = *itr;
284 GraphicsItemType type = (GraphicsItemType) item->data (DATA_KEY_GRAPHICS_ITEM_TYPE).toInt ();
285 ENGAUGE_ASSERT (type == GRAPHICS_ITEM_TYPE_POINT);
287 QString pointIdentifier = item->data (DATA_KEY_IDENTIFIER).toString ();
288 pointIdentifiers << pointIdentifier;
291 return pointIdentifiers;
296 const int ANGLE_THRESHOLD = 15;
297 const int DELTAS_PER_DEGREE = 8;
299 QPoint numDegrees =
event->angleDelta() / DELTAS_PER_DEGREE;
301 LOG4CPP_INFO_S ((*mainCat)) <<
"MainWindow::wheelEvent" 302 <<
" degrees=" << numDegrees.y()
303 <<
" phase=" <<
event->phase();
309 if ((event->modifiers() & Qt::ControlModifier) != 0) {
311 if (numDegrees.y() >= ANGLE_THRESHOLD) {
316 }
else if (numDegrees.y() <= -ANGLE_THRESHOLD) {
329 QGraphicsView::wheelEvent (event);
void signalMouseMove(QPointF)
Send mouse move to MainWindow for eventual display of cursor coordinates in StatusBar.
Returns information about files.
virtual void keyPressEvent(QKeyEvent *event)
Intercept key press events to handle left/right/up/down moving.
bool loadsAsDigFile(const QString &urlString) const
Returns true if specified file name can be loaded as a DIG file.
virtual void wheelEvent(QWheelEvent *event)
Convert wheel events into zoom in/out.
virtual void dragMoveEvent(QDragMoveEvent *event)
Intercept mouse move event to support drag-and-drop.
virtual void dropEvent(QDropEvent *event)
Intercept mouse drop event to support drag-and-drop. This initiates asynchronous loading of the dragg...
virtual void contextMenuEvent(QContextMenuEvent *event)
Intercept context event to support point editing.
virtual void mouseMoveEvent(QMouseEvent *event)
Intercept mouse move events to populate the current cursor position in StatusBar. ...
GraphicsView(QGraphicsScene *scene, MainWindow &mainWindow)
Single constructor.
void signalMousePress(QPointF)
Send mouse press to MainWindow for creating one or more Points.
void signalKeyPress(Qt::Key, bool atLeastOneSelectedItem)
Send keypress to MainWindow for eventual processing by DigitizeStateAbstractBase subclasses.
virtual void mousePressEvent(QMouseEvent *event)
Intercept mouse press events to create one or more Points.
void signalDraggedImage(QImage)
Send dragged image to MainWindow for import. This typically comes from dragging a file...
void signalViewZoomIn()
Send wheel event to MainWindow for zooming in.
void signalDraggedDigFile(QString)
Send dragged dig file to MainWindow for import. This comes from dragging an engauge dig file...
void signalMouseRelease(QPointF)
Send mouse release to MainWindow for moving Points.
void signalContextMenuEventAxis(QString pointIdentifier)
Send right click on axis point to MainWindow for editing.
void signalContextMenuEventGraph(QStringList pointIdentifiers)
Send right click on graph point(s) to MainWindow for editing.
virtual void dragEnterEvent(QDragEnterEvent *event)
Intercept mouse drag event to support drag-and-drop.
virtual void mouseReleaseEvent(QMouseEvent *event)
Intercept mouse release events to move one or more Points.
void signalDraggedImageUrl(QUrl)
Send dragged url to MainWindow for import. This typically comes from dragging an image from a browser...
void signalViewZoomOut()
Send wheel event to MainWindow for zooming out.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...