+ case ToolMouseUp:
+ if (Global::toolState == TSPoint1)
+ {
+ Global::toolState = TSPoint2;
+ // Prevent spurious line from drawing...
+ toolPoint[1] = toolPoint[0];
+ }
+ else if ((Global::toolState == TSPoint2) && shiftDown)
+ {
+ // Key override is telling us to make a new line, not continue the
+ // previous one.
+ toolPoint[0] = toolPoint[1];
+ }
+ else
+ {
+ // Either we're finished with our rotate, or we're stamping a copy.
+ if (ctrlDown)
+ {
+ // Stamp a copy of the selection at the current rotation & bail
+ VPVector temp;
+ CopyObjects(select, temp);
+ ClearSelected(temp);
+ AddObjectsTo(document.objects, temp);
+// RestorePointsTo(select, toolScratch);
+ RestorePointsTo(select, toolScratch2);
+ return;
+ }
+
+ toolPoint[0] = p;
+ Global::toolState = TSPoint1;
+// SavePointsFrom(select, toolScratch);
+ DeleteContents(toolScratch2);
+ CopyObjects(select, toolScratch2);
+ }
+
+ break;
+
+ case ToolKeyDown:
+ // Reset the selection if shift held down...
+ if (shiftDown)
+// RestorePointsTo(select, toolScratch);
+ RestorePointsTo(select, toolScratch2);
+
+ break;
+
+ case ToolKeyUp:
+ // Reset selection when key is let up
+ if (!shiftDown)
+ RotateHandler(ToolMouseMove, toolPoint[1]);
+
+ break;
+
+ case ToolCleanup:
+// RestorePointsTo(select, toolScratch);
+ RestorePointsTo(select, toolScratch2);
+ DeleteContents(toolScratch2);
+ }
+}
+
+void DrawingView::MirrorHandler(int mode, Point p)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ if (Global::toolState == TSNone)
+ {
+ toolPoint[0] = p;
+ SavePointsFrom(select, toolScratch);
+ Global::toolState = TSPoint1;
+ }
+ else if (Global::toolState == TSPoint1)
+ toolPoint[0] = p;
+ else
+ toolPoint[1] = p;
+
+ break;
+
+ case ToolMouseMove:
+ if ((Global::toolState == TSPoint1) || (Global::toolState == TSNone))
+ toolPoint[0] = p;
+ else if (Global::toolState == TSPoint2)
+ {
+ toolPoint[1] = p;
+
+ if (shiftDown)
+ return;
+
+ angleSnap = true;
+ double angle = Vector(toolPoint[0], toolPoint[1]).Angle();
+ VPVectorIter j = select.begin();
+ std::vector<Object>::iterator i = toolScratch.begin();
+
+ for(; i!=toolScratch.end(); i++, j++)
+ {
+ Object obj = *i;
+ Point p1 = Geometry::MirrorPointAroundLine(obj.p[0], toolPoint[0], toolPoint[1]);
+ Point p2 = Geometry::MirrorPointAroundLine(obj.p[1], toolPoint[0], toolPoint[1]);
+ Object * obj2 = (Object *)(*j);
+ obj2->p[0] = p1;
+ obj2->p[1] = p2;
+
+/*
+N.B.: When mirroring an arc thru a horizontal axis, this causes the arc to have
+ a negative start angle which makes it impossible to interact with.
+ !!! FIX !!!
+*/
+ if (obj.type == OTArc)
+ {
+ // This is 2*mirror angle - obj angle - obj span
+ obj2->angle[0] = (2.0 * angle) - obj.angle[0] - obj.angle[1];
+
+ if (obj2->angle[0] > TAU)
+ obj2->angle[0] -= TAU;
+ }
+ }
+ }
+
+ break;
+
+ case ToolMouseUp:
+ if (Global::toolState == TSPoint1)
+ {
+ Global::toolState = TSPoint2;
+ // Prevent spurious line from drawing...
+ toolPoint[1] = toolPoint[0];
+ }
+ else if ((Global::toolState == TSPoint2) && shiftDown)
+ {
+ // Key override is telling us to make a new line, not continue the
+ // previous one.
+ toolPoint[0] = toolPoint[1];
+ }
+ else
+ {
+ // Either we're finished with our rotate, or we're stamping a copy.
+ if (ctrlDown)
+ {
+ // Stamp a copy of the selection at the current rotation & bail
+ VPVector temp;
+ CopyObjects(select, temp);
+ ClearSelected(temp);
+ AddObjectsTo(document.objects, temp);
+ RestorePointsTo(select, toolScratch);
+ return;
+ }
+
+ toolPoint[0] = p;
+ Global::toolState = TSPoint1;
+ SavePointsFrom(select, toolScratch);
+ }
+
+ break;
+
+ case ToolKeyDown:
+ // Reset the selection if shift held down...
+ if (shiftDown)
+ RestorePointsTo(select, toolScratch);
+
+ break;
+
+ case ToolKeyUp:
+ // Reset selection when key is let up
+ if (!shiftDown)
+ MirrorHandler(ToolMouseMove, toolPoint[1]);
+
+ break;
+
+ case ToolCleanup:
+ RestorePointsTo(select, toolScratch);
+ }
+}
+
+void DrawingView::DimensionHandler(int mode, Point p)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ if (Global::toolState == TSNone)
+ toolPoint[0] = p;
+ else
+ toolPoint[1] = p;
+
+ break;
+
+ case ToolMouseMove:
+ if (Global::toolState == TSNone)
+ toolPoint[0] = p;
+ else
+ toolPoint[1] = p;
+
+ break;
+
+ case ToolMouseUp:
+ if (Global::toolState == TSNone)
+ {
+ Global::toolState = TSPoint2;
+ // Prevent spurious line from drawing...
+ toolPoint[1] = toolPoint[0];
+ }
+ else if ((Global::toolState == TSPoint2) && shiftDown)
+ {
+ // Key override is telling us to make a new line, not continue the
+ // previous one.
+ toolPoint[0] = toolPoint[1];
+ }
+ else
+ {
+ Dimension * d = new Dimension(toolPoint[0], toolPoint[1], DTLinear, 0, Global::penWidth);
+ d->layer = Global::activeLayer;
+ document.objects.push_back(d);
+ Global::toolState = TSNone;
+ }
+ }
+}
+
+void DrawingView::DeleteHandler(int mode, Point /*p*/)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ {
+ VPVector hovered = GetHovered();
+
+ RemoveHoveredObjects(document.objects);
+ DeleteContents(hovered);
+ }
+ break;
+
+ case ToolMouseMove:
+ break;
+
+ case ToolMouseUp:
+ break;
+
+ case ToolKeyDown:
+ break;
+
+ case ToolKeyUp:
+ break;
+
+ case ToolCleanup:
+ break;
+ }
+}
+
+void DrawingView::TriangulateHandler(int mode, Point /*p*/)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ {
+ // Skip if nothing hovered...
+ if (numHovered != 1)
+ break;
+
+ VPVector hover = GetHovered();
+ Object * obj = (Object *)hover[0];
+
+ // Skip if it's not a line...
+ if (obj->type != OTLine)
+ break;
+
+ if (Global::toolState == TSNone)
+ toolObj[0] = obj;
+ else if (Global::toolState == TSPoint2)
+ toolObj[1] = obj;
+ else
+ toolObj[2] = obj;
+
+ break;
+ }
+#if 0
+ case ToolMouseMove:
+ if (Global::toolState == TSNone)
+ toolPoint[0] = p;
+ else if (Global::toolState == TSPoint2)
+ toolPoint[1] = p;
+ else if (Global::toolState == TSPoint3)
+ {
+ toolPoint[2] = p;
+ angleSnap = true;
+ }
+ else
+ {
+ toolPoint[3] = p;
+ angleSnap = true;
+ }
+
+ break;
+#endif
+ case ToolMouseUp:
+ if (Global::toolState == TSNone)
+ {
+ Global::toolState = TSPoint2;
+ }
+ else if (Global::toolState == TSPoint2)
+ {
+/* if (shiftDown)
+ {
+ // Key override is telling us to start arc at new center, not
+ // continue the current one.
+ toolPoint[0] = toolPoint[1];
+ return;
+ }*/
+
+ Global::toolState = TSPoint3;
+ }
+ else
+ {
+ double len2 = Vector::Magnitude(toolObj[1]->p[0], toolObj[1]->p[1]);
+ double len3 = Vector::Magnitude(toolObj[2]->p[0], toolObj[2]->p[1]);
+
+ Circle c1(toolObj[0]->p[0], len2);
+ Circle c2(toolObj[0]->p[1], len3);
+
+ Geometry::CheckCircleToCircleIntersection((Object *)&c1, (Object *)&c2);
+
+ // Only move lines if the triangle formed by them is not degenerate
+ if (Global::numIntersectPoints > 0)
+ {
+ toolObj[1]->p[0] = toolObj[0]->p[0];
+ toolObj[1]->p[1] = Global::intersectPoint[0];
+
+ toolObj[2]->p[0] = Global::intersectPoint[0];
+ toolObj[2]->p[1] = toolObj[0]->p[1];
+ }
+
+ Global::toolState = TSNone;
+ }
+ }
+}
+
+void DrawingView::TrimHandler(int mode, Point p)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ {
+ }
+ break;
+
+ case ToolMouseMove:
+ {
+ // Bail out if nothing hovered...
+ if (numHovered != 1)
+ {
+ toolObj[0] = NULL;
+ return;
+ }
+
+ VPVector hover = GetHovered();
+ Object * obj = (Object *)hover[0];
+
+ // Skip if it's not a line...
+ if (obj->type != OTLine)
+ {
+ toolObj[0] = NULL;
+ return;
+ }
+
+ toolObj[0] = obj;
+ double hoveredParam = Geometry::ParameterOfLineAndPoint(obj->p[0], obj->p[1], p);
+ double t = 0, u = 1.0;
+
+ // Currently only deal with line against line trimming, can expand to
+ // others as well (line/circle, circle/circle, line/arc, etc)
+ VPVectorIter i;
+ for(i=document.objects.begin(); i!=document.objects.end(); i++)
+ {
+ obj = (Object *)(*i);
+
+ if (obj == toolObj[0])
+ continue;
+ else if (obj->type != OTLine)
+ continue;
+
+ Geometry::CheckLineToLineIntersection(toolObj[0], obj);
+
+ if (Global::numIntersectParams > 0)
+ {
+ // Skip endpoint-endpoint intersections
+ if ((Global::numIntersectParams == 2)
+ && (Global::intersectParam[0] == 0
+ || Global::intersectParam[0] == 1.0)
+ && (Global::intersectParam[1] == 0
+ || Global::intersectParam[1] == 1.0))
+ continue;
+
+ // Mark the line segment somehow (the side the mouse is on) so that it can be drawn & trimmed when we hit ToolMouseDown.
+ if ((Global::intersectParam[0] > t) && (Global::intersectParam[0] < hoveredParam))
+ t = Global::intersectParam[0];
+
+ if ((Global::intersectParam[0] < u) && (Global::intersectParam[0] > hoveredParam))
+ u = Global::intersectParam[0];
+ }
+ }
+
+ toolParam[0] = t;
+ toolParam[1] = u;
+ toolPoint[0] = Geometry::GetPointForParameter(toolObj[0], t);
+ toolPoint[1] = Geometry::GetPointForParameter(toolObj[0], u);
+ }
+ break;
+
+ case ToolMouseUp:
+ {
+ // Bail out if there's no object to trim
+ if (toolObj[0] == NULL)
+ return;
+
+ Vector v(toolObj[0]->p[0], toolObj[0]->p[1]);
+
+ // Check to see which case we have.
+ if ((toolParam[0] == 0) && (toolParam[1] == 1.0))
+ {
+ // There was no intersection, so delete the object
+ toolObj[0]->selected = true;
+ DeleteSelectedObjects(document.objects);
+ }
+ else if (toolParam[0] == 0)
+ {
+ // We delete the end near point #1
+ toolObj[0]->p[0] = toolObj[0]->p[0] + (v * toolParam[1]);
+ }
+ else if (toolParam[1] == 1.0)
+ {
+ // We delete the end near point #2
+ toolObj[0]->p[1] = toolObj[0]->p[0] + (v * toolParam[0]);
+ }
+ else
+ {
+ // We delete the segment in between, and create a new line in the process
+ Point p1 = toolObj[0]->p[0] + (v * toolParam[0]);
+ Point p2 = toolObj[0]->p[0] + (v * toolParam[1]);
+ Point p3 = toolObj[0]->p[1];
+ toolObj[0]->p[1] = p1;
+ Line * l = new Line(p2, p3, toolObj[0]->thickness, toolObj[0]->color, toolObj[0]->style);
+ document.objects.push_back(l);
+// Global::toolState = TSNone;
+ }
+
+ toolObj[0]->hitObject = toolObj[0]->hitPoint[0] = toolObj[0]->hitPoint[1] = false;
+ toolObj[0] = NULL;
+ }
+ break;
+
+ case ToolKeyDown:
+ break;
+
+ case ToolKeyUp:
+ break;
+
+ case ToolCleanup:
+ break;
+ }
+}
+
+void DrawingView::ParallelHandler(int mode, Point p)
+{
+ switch (mode)
+ {
+ case ToolMouseDown:
+ if (numHovered == 1)
+ {
+ // New selection made...
+ VPVector hover = GetHovered();
+ toolObj[0] = (Object *)hover[0];
+ Global::toolState = TSNone;
+ }
+ else if ((numHovered == 0) && (toolObj[0] != NULL))
+ {
+ double length = Vector::Magnitude(toolObj[0]->p[0], toolPoint[0]);
+ bool inside = (length >= toolObj[0]->radius[0] ? false : true);
+
+ // Stamp out new parallel object(s)...
+ for(int i=1; i<=Global::parallelNum; i++)
+ {
+ if (toolObj[0]->type == OTLine)
+ {
+ Line * l = new Line(toolObj[0]->p[0] + (toolPoint[0] * Global::parallelDist * (double)i), toolObj[0]->p[1] + (toolPoint[0] * Global::parallelDist * (double)i), Global::penWidth, Global::penColor, Global::penStyle);
+ // Should probably have a user selection for this whether it goes into the selected objects layer or the global layer...
+ l->layer = toolObj[0]->layer;
+ document.objects.push_back(l);
+ }
+ else if (toolObj[0]->type == OTCircle)
+ {
+ double radius = toolObj[0]->radius[0] + ((double)i * Global::parallelDist * (inside ? -1.0 : 1.0));
+
+ if (radius > 0)
+ {
+ Circle * c = new Circle(toolObj[0]->p[0], radius, Global::penWidth, Global::penColor, Global::penStyle);
+ c->layer = toolObj[0]->layer;
+ document.objects.push_back(c);
+ }
+ }
+ else if (toolObj[0]->type == OTArc)
+ {
+ double radius = toolObj[0]->radius[0] + ((double)i * Global::parallelDist * (inside ? -1.0 : 1.0));
+
+ if (radius > 0)
+ {
+ Arc * a = new Arc(toolObj[0]->p[0], radius, toolObj[0]->angle[0], toolObj[0]->angle[1], Global::penWidth, Global::penColor, Global::penStyle);
+ a->layer = toolObj[0]->layer;
+ document.objects.push_back(a);
+ }
+ }
+ }
+
+ // Then reset the state
+ toolObj[0]->selected = false;
+ toolObj[0] = NULL;
+ Global::toolState = TSNone;
+ }
+
+ break;
+
+ case ToolMouseMove:
+ if ((numHovered == 0) && toolObj[0] != NULL)
+ Global::toolState = TSPoint1;
+ else
+ Global::toolState = TSNone;
+
+ if (Global::toolState == TSPoint1)
+ {
+ // Figure out which side of the object we're on, and draw the preview on that side...
+ if (toolObj[0]->type == OTLine)
+ {
+ Vector normal = Geometry::GetNormalOfPointAndLine(p, (Line *)toolObj[0]);
+ toolPoint[0] = normal;
+ }
+ else if ((toolObj[0]->type == OTCircle) || (toolObj[0]->type == OTArc))
+ {
+ toolPoint[0] = p;
+ }
+ }
+
+ break;
+
+ case ToolMouseUp:
+ break;
+
+ case ToolKeyDown:
+ break;
+
+ case ToolKeyUp:
+ break;
+
+ case ToolCleanup:
+ break;
+ }
+}
+
+void DrawingView::mousePressEvent(QMouseEvent * event)
+{
+ if (event->button() == Qt::LeftButton)
+ {
+ Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
+
+ // Handle tool processing, if any
+ if (Global::tool)
+ {
+ if (hoveringIntersection)
+ point = intersectionPoint;
+ else if (hoverPointValid)
+ point = hoverPoint;
+ else if (Global::snapToGrid)
+ point = SnapPointToGrid(point);
+
+ ToolHandler(ToolMouseDown, point);
+ return;
+ }
+
+ // Clear the selection only if CTRL isn't being held on click
+ if (!ctrlDown)
+ ClearSelected(document.objects);
+
+ // If any objects are being hovered on click, deal with 'em
+ if (numHovered > 0)
+ {
+ VPVector hover2 = GetHovered();
+ dragged = (Object *)hover2[0];
+
+ // Alert the pen widget
+ if (Global::penDropper)
+ {
+ Global::penColor = dragged->color;
+ Global::penWidth = dragged->thickness;
+ Global::penStyle = dragged->style;
+ emit ObjectSelected(dragged);
+ return;
+ }
+ else if (Global::penStamp)
+ {
+ dragged->color = Global::penColor;
+ dragged->thickness = Global::penWidth;
+ dragged->style = Global::penStyle;
+ return;
+ }
+ // See if anything is using just a straight click on a custom
+ // object handle (like Dimension objects)
+ else if (HandleObjectClicked())
+ {
+ update();
+ return;
+ }
+
+ draggingObject = true;
+ HandleSelectionClick(hover2);
+ update(); // needed??
+
+ // Needed for grab & moving objects
+ // We do it *after*... why? (doesn't seem to confer any advantage...)
+ if (hoveringIntersection)
+ oldPoint = intersectionPoint;
+ else if (hoverPointValid)
+ oldPoint = hoverPoint;
+ else if (Global::snapToGrid)
+ oldPoint = SnapPointToGrid(point);
+
+ // Needed for fixed length handling
+ if (Global::fixedLength)
+ {
+ if (dragged->type == OTLine)
+ dragged->length = ((Line *)dragged)->Length();
+ }
+
+ // Needed for fixed angle handling
+ if (Global::fixedAngle)
+ {
+ if (dragged->type == OTLine)
+ dragged->p[2] = ((Line *)dragged)->Unit();
+ }
+
+ if (dragged->type == OTCircle)
+ {
+ // Save for informative text, uh, er, informing
+ dragged->length = dragged->radius[0];
+ }
+
+ return;
+ }
+
+ // Didn't hit any object and not using a tool, so do a selection
+ // rectangle
+ Global::selectionInProgress = true;
+ Global::selection.l = Global::selection.r = point.x;
+ Global::selection.t = Global::selection.b = point.y;
+ select = GetSelection();
+ }
+ else if (event->button() == Qt::MiddleButton)
+ {
+ scrollDrag = true;
+ oldPoint = Vector(event->x(), event->y());
+ // Should also change the mouse pointer as well...
+ setCursor(Qt::SizeAllCursor);
+ }
+}
+
+void DrawingView::mouseMoveEvent(QMouseEvent * event)
+{
+ // It seems that wheelEvent() triggers this for some reason...
+ if (scrollWheelSeen)
+ {
+ scrollWheelSeen = false;
+ return;
+ }
+
+ Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
+ Global::selection.r = point.x;
+ Global::selection.b = point.y;
+ // Only needs to be done here, as mouse down is always preceded by movement
+ Global::snapPointIsValid = false;
+ hoveringIntersection = false;
+ oldScrollPoint = Vector(event->x(), event->y());
+
+ // Scrolling...
+ if ((event->buttons() & Qt::MiddleButton) || scrollDrag)
+ {
+ point = Vector(event->x(), event->y());
+ // Since we're using Qt coords for scrolling, we have to adjust them
+ // here to conform to Cartesian coords, since the origin is using
+ // Cartesian. :-)
+ Vector delta(oldPoint, point);
+ delta /= Global::zoom;
+ delta.y = -delta.y;
+ Global::origin -= delta;
+
+// UpdateGridBackground();
+ update();
+ oldPoint = point;
+ return;
+ }
+
+ // If we're doing a selection rect, see if any objects are engulfed by it
+ // (implies left mouse button held down)
+ if (Global::selectionInProgress)
+ {
+ CheckObjectBounds();
+
+ // Make sure previously selected objects stay selected (CTRL held)
+ for(VPVectorIter i=select.begin(); i!=select.end(); i++)
+ {
+ // Make sure *not* to select items on hidden layers
+ if (Global::layerHidden[((Object *)(*i))->layer] == false)
+ ((Object *)(*i))->selected = true;
+ }
+
+ update();
+ return;
+ }
+
+ // Do object hit testing...
+ bool needUpdate = HitTestObjects(point);
+ VPVector hover2 = GetHovered(true); // Exclude dimension objects and circle centers (probably need to add arc centers too) from hover (also dragged objects...)
+#if 0
+{
+if (needUpdate)
+{
+ printf("mouseMoveEvent:: numHovered=%li, hover2.size()=%li\n", numHovered, hover2.size());
+
+ if (hover2.size() > 0)
+ printf(" (hover2[0]=$%llX, type=%s)\n", hover2[0], objName[((Object *)hover2[0])->type]);
+}
+}
+#endif
+
+ // Check for multi-hover...
+ if (hover2.size() > 1)
+ {
+//need to check for case where hover is over 2 circles and a 3rd's center (no longer a problem, I think)...
+ Object * obj1 = (Object *)hover2[0], * obj2 = (Object *)hover2[1];
+
+ Geometry::Intersects(obj1, obj2);
+ int numIntersecting = Global::numIntersectParams;
+ double t = Global::intersectParam[0];
+ double u = Global::intersectParam[1];
+
+ if (numIntersecting > 0)
+ {
+ Vector v1 = Geometry::GetPointForParameter(obj1, t);
+ Vector v2 = Geometry::GetPointForParameter(obj2, u);
+ QString text = tr("Intersection t=%1 (%3, %4), u=%2 (%5, %6)");
+ informativeText = text.arg(t).arg(u).arg(v1.x).arg(v1.y).arg(v2.x).arg(v2.y);
+
+ hoveringIntersection = true;
+ intersectionPoint = v1;
+ }
+
+ numIntersecting = Global::numIntersectPoints;
+
+ if (numIntersecting > 0)
+ {
+ Vector v1 = Global::intersectPoint[0];
+
+ if (numIntersecting == 2)
+ {
+ Vector v2 = Global::intersectPoint[1];
+
+ if (Vector::Magnitude(v2, point) < Vector::Magnitude(v1, point))
+ v1 = v2;
+ }
+
+ QString text = tr("Intersection <%1, %2>");
+ informativeText = text.arg(v1.x).arg(v1.y);
+ hoveringIntersection = true;
+ intersectionPoint = v1;
+ }
+ }
+ else if (hover2.size() == 1)
+ {
+ Object * obj = (Object *)hover2[0];
+
+ if (obj->type == OTLine)
+ {
+/*
+Not sure that this is the best way to handle this, but it works(TM)...
+*/
+ Point midpoint = Geometry::Midpoint((Line *)obj);
+ Vector v1 = Vector::Magnitude(midpoint, point);
+
+ if ((v1.Magnitude() * Global::zoom) < 8.0)
+ {
+ QString text = tr("Midpoint <%1, %2>");
+ informativeText = text.arg(midpoint.x).arg(midpoint.y);
+ hoverPointValid = true;
+ hoverPoint = midpoint;
+ needUpdate = true;
+ }
+ }
+ else if (obj->type == OTCircle)
+ {
+ if ((draggingObject && (dragged->type == OTLine)) && (dragged->hitPoint[0] || dragged->hitPoint[1]))
+ {
+ Point p = (dragged->hitPoint[0] ? dragged->p[1] : dragged->p[0]);
+ Geometry::FindTangents(obj, p);
+
+ if (Global::numIntersectPoints > 0)
+ {
+ hoveringIntersection = true;
+ intersectionPoint = Geometry::NearestTo(point, Global::intersectPoint[0], Global::intersectPoint[1]);
+ }
+ }
+ else if ((Global::tool == TTLine) && (Global::toolState == TSPoint2))
+ {
+ Geometry::FindTangents(obj, toolPoint[0]);
+
+ if (Global::numIntersectPoints > 0)
+ {
+ hoveringIntersection = true;
+ intersectionPoint = Geometry::NearestTo(point, Global::intersectPoint[0], Global::intersectPoint[1]);
+ }
+ }
+ }
+ }
+
+ // Handle object movement (left button down & over an object)
+ if ((event->buttons() & Qt::LeftButton) && draggingObject && !Global::tool)
+ {
+ if (hoveringIntersection)
+ point = intersectionPoint;
+ else if (hoverPointValid)
+ point = hoverPoint;
+ else if (Global::snapToGrid)
+ point = SnapPointToGrid(point);
+
+ HandleObjectMovement(point);
+ update();
+ oldPoint = point;
+ return;
+ }
+
+ // Do tool handling, if any are active...
+ if (Global::tool)
+ {
+ if (hoveringIntersection)
+ point = intersectionPoint;
+ else if (hoverPointValid)
+ point = hoverPoint;
+ else if (Global::snapToGrid)
+ {
+ if (angleSnap)
+ point = SnapPointToAngle(point);
+ else
+ point = SnapPointToGrid(point);
+ }
+
+ ToolHandler(ToolMouseMove, point);
+ }
+
+ // This is used to draw the tool crosshair...
+ oldPoint = point;
+
+ if (needUpdate || Global::tool)
+ update();
+}
+
+void DrawingView::mouseReleaseEvent(QMouseEvent * event)
+{
+ if (event->button() == Qt::LeftButton)
+ {
+//We need to update especially if nothing collided and the state needs to change. !!! FIX !!!
+//could set it up to use the document's update function (assumes that all object
+//updates are being reported correctly:
+// if (document.NeedsUpdate())
+ // Do an update if collided with at least *one* object in the document
+// if (collided)
+ update();
+
+ if (Global::tool)
+ {
+ Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
+ ToolHandler(ToolMouseUp, point);
+ return;
+ }
+
+ Global::selectionInProgress = false;
+ informativeText.clear();
+
+// Should we be doing this automagically? Hmm...
+ // Clear our vectors
+// select.clear();
+//// hover.clear();
+
+ // Scoop 'em up (do we need to??? Seems we do, because keyboard movement uses it. Also, tools use it too. But we can move it out of here [where to???])
+ select = GetSelection();
+
+ draggingObject = false;
+ }
+ else if (event->button() == Qt::MiddleButton)
+ {
+ scrollDrag = false;
+
+ if (Global::penStamp)
+ setCursor(curMarker);
+ else if (Global::penDropper)
+ setCursor(curDropper);
+ else
+ setCursor(Qt::ArrowCursor);
+
+ // Need to convert this, since it's in Qt coordinates (for wheelEvent)
+ oldPoint = Painter::QtToCartesianCoords(oldPoint);
+ }
+}
+
+void DrawingView::wheelEvent(QWheelEvent * event)
+{
+ double zoomFactor = 1.20;
+ scrollWheelSeen = true;
+
+ if (event->angleDelta().y() < 0)
+ {
+ if (Global::zoom > 400.0)
+ return;
+
+ Global::zoom *= zoomFactor;
+ }
+ else
+ {
+ if (Global::zoom < 0.125)
+ return;
+
+ Global::zoom /= zoomFactor;
+ }
+
+ Point np = Painter::QtToCartesianCoords(oldScrollPoint);
+ Global::origin += (oldPoint - np);
+
+ emit(NeedZoomUpdate());
+}
+
+void DrawingView::keyPressEvent(QKeyEvent * event)
+{
+ bool oldShift = shiftDown;
+ bool oldCtrl = ctrlDown;
+ bool oldAlt = altDown;
+
+ if (event->key() == Qt::Key_Shift)
+ shiftDown = true;
+ else if (event->key() == Qt::Key_Control)
+ ctrlDown = true;
+ else if (event->key() == Qt::Key_Alt)
+ altDown = true;
+
+ // If there's a change in any of the modifier key states, pass it on to
+ // the current tool's handler
+ if ((oldShift != shiftDown) || (oldCtrl != ctrlDown))
+ {
+ if (Global::tool)
+ ToolHandler(ToolKeyDown, Point(0, 0));
+
+ update();
+ }
+
+ if (oldAlt != altDown)
+ {
+ scrollDrag = true;
+ setCursor(Qt::SizeAllCursor);
+ oldPoint = oldScrollPoint;
+ }
+
+ if (select.size() > 0)
+ {
+ if (event->key() == Qt::Key_Up)
+ {
+ TranslateObjects(select, Point(0, +1.0));
+ update();
+ }
+ else if (event->key() == Qt::Key_Down)
+ {
+ TranslateObjects(select, Point(0, -1.0));
+ update();
+ }
+ else if (event->key() == Qt::Key_Right)
+ {
+ TranslateObjects(select, Point(+1.0, 0));
+ update();
+ }
+ else if (event->key() == Qt::Key_Left)
+ {
+ TranslateObjects(select, Point(-1.0, 0));
+ update();
+ }
+ }
+}
+
+void DrawingView::keyReleaseEvent(QKeyEvent * event)
+{
+ bool oldShift = shiftDown;
+ bool oldCtrl = ctrlDown;
+ bool oldAlt = altDown;
+
+ if (event->key() == Qt::Key_Shift)
+ shiftDown = false;
+ else if (event->key() == Qt::Key_Control)
+ ctrlDown = false;
+ else if (event->key() == Qt::Key_Alt)
+ altDown = false;
+
+ if ((oldShift != shiftDown) || (oldCtrl != ctrlDown))
+ {
+ if (Global::tool)
+ ToolHandler(ToolKeyUp, Point(0, 0));
+
+ update();
+ }
+
+ if (oldAlt != altDown)
+ {
+ scrollDrag = false;
+
+ if (Global::penStamp)
+ setCursor(curMarker);
+ else if (Global::penDropper)
+ setCursor(curDropper);
+ else
+ setCursor(Qt::ArrowCursor);
+ }
+}
+
+//
+// This looks strange, but it's really quite simple: We want a point that's
+// more than half-way to the next grid point to snap there while conversely we
+// want a point that's less than half-way to to the next grid point then snap
+// to the one before it. So we add half of the grid spacing to the point, then
+// divide by it so that we can remove the fractional part, then multiply it
+// back to get back to the correct answer.
+//
+Point DrawingView::SnapPointToGrid(Point point)
+{
+ point += Global::gridSpacing / 2.0; // *This* adds to Z!!!
+ point /= Global::gridSpacing;
+ point.x = floor(point.x);//need to fix this for negative numbers...
+ point.y = floor(point.y);
+ point.z = 0; // Make *sure* Z doesn't go anywhere!!!
+ point *= Global::gridSpacing;
+ return point;
+}
+
+Point DrawingView::SnapPointToAngle(Point point)
+{
+ // Snap to a single digit angle (using toolpoint #1 as the center)
+ double angle = Vector::Angle(toolPoint[0], point);
+ double length = Vector::Magnitude(toolPoint[0], point);
+
+ // Convert from radians to degrees
+ double degAngle = angle * RADIANS_TO_DEGREES;
+ double snapAngle = (double)((int)(degAngle + 0.5));
+
+ Vector v;
+ v.SetAngleAndLength(snapAngle * DEGREES_TO_RADIANS, length);
+ point = toolPoint[0] + v;
+
+ return point;
+}
+
+Rect DrawingView::GetObjectExtents(Object * obj)
+{
+ // Default to empty rect, if object checks below fail for some reason
+ Rect rect;
+
+ switch (obj->type)
+ {
+ case OTLine:
+ case OTDimension:
+ {
+ rect = Rect(obj->p[0], obj->p[1]);
+ break;
+ }
+
+ case OTCircle:
+ {
+ rect = Rect(obj->p[0], obj->p[0]);
+ rect.Expand(obj->radius[0]);
+ break;
+ }
+
+ case OTArc:
+ {
+ Arc * a = (Arc *)obj;
+
+ double start = a->angle[0];
+ double end = start + a->angle[1];
+
+ // Swap 'em if the span is negative...
+ if (a->angle[1] < 0)
+ {
+ end = a->angle[0];
+ start = end + a->angle[1];
+ }
+
+ rect = Rect(Point(cos(start), sin(start)), Point(cos(end), sin(end)));
+
+ // If the end of the arc is before the beginning, add 360 degrees to it
+ if (end < start)
+ end += TAU;
+
+/*
+Find which quadrant the start angle is in (consider the beginning of the 90° angle to be in the quadrant, the end to be in the next quadrant). Then, divide the span into 90° segments. The integer portion is the definite axis crossings; the remainder needs more scrutiny. There will be an additional axis crossing if the the sum of the start angle and the remainder is > 90°.
+*/
+#if 1
+ int quadStart = (int)(a->angle[0] / QTR_TAU);
+ double qsRemain = a->angle[0] - ((double)quadStart * QTR_TAU);
+ int numAxes = (int)((a->angle[1] + qsRemain) / QTR_TAU);
+
+ double axis[4] = { 0, 0, 0, 0 };
+ axis[0] = rect.t, axis[1] = rect.l, axis[2] = rect.b, axis[3] = rect.r;
+ double box[4] = { 1.0, -1.0, -1.0, 1.0 };
+
+ for(int i=0; i<numAxes; i++)
+ axis[(quadStart + i) % 4] = box[(quadStart + i) % 4];
+
+ // The rect is constructed the same way we traverse the axes: TLBR
+ Rect r2(axis[0], axis[1], axis[2], axis[3]);
+
+ rect |= r2;
+#else
+ // Adjust the bounds depending on which axes are crossed
+ if ((start < QTR_TAU) && (end > QTR_TAU))
+ rect.t = 1.0;
+
+ if ((start < HALF_TAU) && (end > HALF_TAU))
+ rect.l = -1.0;
+
+ if ((start < THREE_QTR_TAU) && (end > THREE_QTR_TAU))
+ rect.b = -1.0;
+
+ if ((start < TAU) && (end > TAU))
+ rect.r = 1.0;
+
+ if ((start < (TAU + QTR_TAU)) && (end > (TAU + QTR_TAU)))
+ rect.t = 1.0;
+
+ if ((start < (TAU + HALF_TAU)) && (end > (TAU + HALF_TAU)))
+ rect.l = -1.0;
+
+ if ((start < (TAU + THREE_QTR_TAU)) && (end > (TAU + THREE_QTR_TAU)))
+ rect.b = -1.0;
+#endif
+
+ rect *= a->radius[0];
+ rect.Translate(a->p[0]);
+ break;
+ }
+
+ case OTText:
+ {
+ Text * t = (Text *)obj;
+ rect = Rect(t->p[0], Point(t->p[0].x + t->extents.Width(), t->p[0].y - t->extents.Height()));
+ break;
+ }
+
+ case OTContainer:
+ {
+ Container * c = (Container *)obj;
+ VPVectorIter i = c->objects.begin();
+ rect = GetObjectExtents((Object *)*i);
+ i++;
+
+ for(; i!=c->objects.end(); i++)
+ rect |= GetObjectExtents((Object *)*i);
+ }
+
+ default:
+ break;
+ }
+
+ return rect;
+}
+
+void DrawingView::CheckObjectBounds(void)
+{
+ VPVectorIter i;
+
+ for(i=document.objects.begin(); i!=document.objects.end(); i++)
+ {
+ Object * obj = (Object *)(*i);
+ obj->selected = false;
+ Rect selection = Global::selection;
+ selection.Normalize();
+
+ switch (obj->type)
+ {
+ case OTLine:
+ case OTDimension: // N.B.: We don't check this properly...
+ {
+ Line * l = (Line *)obj;
+
+ if (selection.Contains(l->p[0]) && selection.Contains(l->p[1]))
+ l->selected = true;
+
+ break;
+ }
+
+ case OTCircle:
+ {
+ Circle * c = (Circle *)obj;
+ Vector radVec(c->radius[0], c->radius[0]);
+
+ if (selection.Contains(c->p[0] - radVec) && selection.Contains(c->p[0] + radVec))
+ c->selected = true;
+
+ break;
+ }
+
+ case OTArc:
+ {
+ Arc * a = (Arc *)obj;
+
+ double start = a->angle[0];
+ double end = start + a->angle[1];
+
+ // Swap 'em if the span is negative...
+ if (a->angle[1] < 0)
+ {
+ end = a->angle[0];
+ start = end + a->angle[1];
+ }
+
+ // If the end of the arc is before the beginning, add 360 degrees
+ // to it
+ if (end < start)
+ end += TAU;
+
+#if 1
+ int quadStart = (int)(a->angle[0] / QTR_TAU);
+ double qsRemain = a->angle[0] - ((double)quadStart * QTR_TAU);
+ int numAxes = (int)((a->angle[1] + qsRemain) / QTR_TAU);
+
+ Rect bounds(sin(start), cos(start), sin(end), cos(end));
+ const double box[4] = { 1.0, -1.0, -1.0, 1.0 };
+
+ for(int i=0; i<numAxes; i++)
+ bounds[(quadStart + i) % 4] = box[(quadStart + i) % 4];
+#else
+ // Adjust the bounds depending on which axes are crossed
+ if ((start < QTR_TAU) && (end > QTR_TAU))
+ bounds.t = 1.0;
+
+ if ((start < HALF_TAU) && (end > HALF_TAU))
+ bounds.l = -1.0;
+
+ if ((start < THREE_QTR_TAU) && (end > THREE_QTR_TAU))
+ bounds.b = -1.0;
+
+ if ((start < TAU) && (end > TAU))
+ bounds.r = 1.0;
+
+ if ((start < (TAU + QTR_TAU)) && (end > (TAU + QTR_TAU)))
+ bounds.t = 1.0;
+
+ if ((start < (TAU + HALF_TAU)) && (end > (TAU + HALF_TAU)))
+ bounds.l = -1.0;
+
+ if ((start < (TAU + THREE_QTR_TAU)) && (end > (TAU + THREE_QTR_TAU)))
+ bounds.b = -1.0;
+#endif
+
+ bounds *= a->radius[0];
+ bounds.Translate(a->p[0]);
+
+ if (selection.Contains(bounds))
+ a->selected = true;
+
+ break;
+ }
+
+ case OTPolyline:
+ {
+ Polyline * pl = (Polyline *)obj;
+ Rect r(((Object *)(pl->points[0]))->p[0]);
+
+ for(int i=0; i<(pl->points.size()-1); i++)
+ {
+ r += ((Object *)(pl->points[i]))->p[0];
+ r += ((Object *)(pl->points[i + 1]))->p[0];
+ }
+
+ if (selection.Contains(r))
+ pl->selected = true;
+
+ break;
+ }
+
+ case OTText:
+ {
+ Text * t = (Text *)obj;
+ Rect r(obj->p[0], Point(t->p[0].x + t->extents.Width(), t->p[0].y - t->extents.Height()));
+
+ if (selection.Contains(r))
+ t->selected = true;
+
+ break;
+ }
+
+ case OTContainer:
+ {
+ Container * c = (Container *)obj;
+
+ if (selection.Contains(c->p[0]) && selection.Contains(c->p[1]))
+ c->selected = true;
+
+ break;
+ }
+
+// default:
+// break;
+ }
+ }
+}
+
+bool DrawingView::HitTestObjects(Point point)