3 // Part of the Architektonas Project
4 // (C) 2011 Underground Software
5 // See the README and GPLv3 files for licensing and warranty information
7 // JLH = James Hammons <jlhamm@acm.org>
10 // --- ---------- -------------------------------------------------------------
11 // JLH 03/22/2011 Created this file
12 // JLH 09/29/2011 Added middle mouse button panning
17 // - Redo rendering code to *not* use Qt's transform functions, as they are tied
18 // to a left-handed system and we need a right-handed one. [DONE]
25 // Uncomment this for debugging...
27 //#define DEBUGFOO // Various tool debugging...
28 //#define DEBUGTP // Toolpalette debugging...
30 #include "drawingview.h"
35 #include "mathconstants.h"
41 #define BACKGROUND_MAX_SIZE 512
44 //Container DrawingView::document(Vector(0, 0));
47 DrawingView::DrawingView(QWidget * parent/*= NULL*/): QWidget(parent),
48 // The value in the settings file will override this.
49 useAntialiasing(true), numSelected(0), numHovered(0), shiftDown(false),
51 gridBackground(BACKGROUND_MAX_SIZE, BACKGROUND_MAX_SIZE),
52 scale(1.0), offsetX(-10), offsetY(-10),// document(Vector(0, 0)),
53 gridPixels(0), collided(false)//, toolAction(NULL)
55 // document.isTopLevelContainer = true;
56 //wtf? doesn't work except in c++11??? document = { 0 };
57 setBackgroundRole(QPalette::Base);
58 setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
60 Global::gridSpacing = 12.0; // In base units (inch is default)
63 Line * line = new Line(Vector(5, 5), Vector(50, 40), &document);
65 document.Add(new Line(Vector(50, 40), Vector(10, 83), &document));
66 document.Add(new Line(Vector(10, 83), Vector(17, 2), &document));
67 document.Add(new Circle(Vector(100, 100), 36, &document));
68 document.Add(new Circle(Vector(50, 150), 49, &document));
69 document.Add(new Arc(Vector(300, 300), 32, PI / 4.0, PI * 1.3, &document)),
70 document.Add(new Arc(Vector(200, 200), 60, PI / 2.0, PI * 1.5, &document));
72 Dimension * dimension = new Dimension(Vector(0, 0), Vector(0, 0), DTLinear, &document);
73 line->SetDimensionOnLine(dimension);
74 document.Add(dimension);
76 // Alternate way to do the above...
77 line->SetDimensionOnLine();
80 Line * line = new Line;//(Vector(5, 5), Vector(50, 40), &document);
81 line->p[0] = Vector(5, 5);
82 line->p[1] = Vector(50, 40);
84 line->thickness = 2.0;
86 line->color = 0xFF7F00;
87 document.objects.push_back(line);
88 document.objects.push_back(new Line(Vector(50, 40), Vector(10, 83)));
89 document.objects.push_back(new Line(Vector(10, 83), Vector(17, 2)));
90 document.objects.push_back(new Circle(Vector(100, 100), 36));
91 document.objects.push_back(new Circle(Vector(50, 150), 49));
92 document.objects.push_back(new Arc(Vector(300, 300), 32, PI / 4.0, PI * 1.3)),
93 document.objects.push_back(new Arc(Vector(200, 200), 60, PI / 2.0, PI * 1.5));
94 document.objects.push_back(new Dimension(Vector(50, 40), Vector(5, 5)));
95 document.objects.push_back(new Text(Vector(10, 83), "Here is some awesome text!"));
99 Here we set the grid size in pixels--12 in this case. Initially, we have our
100 zoom set to make this represent 12 inches at a zoom factor of 25%. (This is
101 arbitrary.) So, to be able to decouple the grid size from the zoom, we need
102 to be able to set the size of the background grid (which we do here at an
103 arbitrary 12 pixels) to anything we want (within reason, of course :-).
105 The drawing enforces the grid spacing through the drawing->gridSpacing variable.
107 drawing->gridSpacing = 12.0 / Global::zoom;
109 Global::zoom is the zoom factor for the drawing, and all mouse clicks are
110 translated to Cartesian coordinates through this. (Initially, Global::zoom is
111 set to 1.0. SCREEN_ZOOM is set to 1.0/4.0.)
113 Really, the 100% zoom level can be set at *any* zoom level, it's more of a
114 convenience function than any measure of absolutes. Doing things that way we
115 could rid ourselves of the whole SCREEN_ZOOM parameter and all the attendant
116 shittiness that comes with it.
118 However, it seems that SCREEN_ZOOM is used to make text and arrow sizes show up
119 a certain way, which means we should probably create something else in those
120 objects to take its place--like some kind of scale factor. This would seem to
121 imply that certain point sizes actually *do* tie things like fonts to absolute
122 sizes on the screen, but not necessarily because you could have an inch scale
123 with text that is quite small relative to other objects on the screen, which
124 currently you have to zoom in to see (and which blows up the text). Point sizes
125 in an application like this are a bit meaningless; even though an inch is an
126 inch regardless of the zoom level a piece of text can be larger or smaller than
127 this. Maybe this is the case for having a base unit and basing point sizes off
130 Here's what's been figured out. Global::zoom is simply the ratio of pixels to
131 base units. What that means is that if you have a 12px grid with a 6" grid size
132 (& base unit of "inches"), Global::zoom becomes 12px / 6" = 2.0 px/in.
134 Dimensions now have a "size" parameter to set their absolute size in relation
135 to the base unit. ATM, the arrows are drawn in pixels, but also scaled by
136 Global::zoom *and* size. Same with the dimension text; it's drawn at 10pt and
137 scaled the same way as the arrowheads.
139 Need a way to scale line widths as well. :-/ Shouldn't be too difficult, just
140 need a thickness parameter similar to the "size" param for dimensions. (And now
144 SetGridSize(12); // This is in pixels
149 void DrawingView::SetToolActive(Action * action)
154 connect(toolAction, SIGNAL(ObjectReady(Object *)), this,
155 SLOT(AddNewObjectToDocument(Object *)));
156 connect(toolAction, SIGNAL(NeedRefresh()), this, SLOT(HandleActionUpdate()));
162 void DrawingView::SetGridSize(uint32_t size)
165 if (size == gridPixels)
168 // Recreate the background bitmap
170 QPainter pmp(&gridBackground);
171 pmp.fillRect(0, 0, BACKGROUND_MAX_SIZE, BACKGROUND_MAX_SIZE, QColor(240, 240, 240));
172 pmp.setPen(QPen(QColor(210, 210, 255), 2.0, Qt::SolidLine));
174 for(int i=0; i<(BACKGROUND_MAX_SIZE-1); i+=gridPixels)
176 pmp.drawLine(i, 0, i, BACKGROUND_MAX_SIZE - 1);
177 pmp.drawLine(0, i, BACKGROUND_MAX_SIZE - 1, i);
182 // Set up new BG brush & zoom level (pixels per base unit)
183 // Painter::zoom = gridPixels / gridSpacing;
184 Global::zoom = gridPixels / Global::gridSpacing;
185 UpdateGridBackground();
189 void DrawingView::UpdateGridBackground(void)
191 // Transform the origin to Qt coordinates
192 Vector pixmapOrigin = Painter::CartesianToQtCoords(Vector());
193 int x = (int)pixmapOrigin.x;
194 int y = (int)pixmapOrigin.y;
195 // Use mod arithmetic to grab the correct swatch of background
197 Negative numbers still screw it up... Need to think about what we're
198 trying to do here. The fact that it worked with 72 seems to have been pure luck.
199 It seems the problem is negative numbers: We can't let that happen.
200 When taking away the zero, it pops over 1 px at zero, then goes about 1/2 a
203 The bitmap looks like this:
213 @ x = 1, we want it to look like:
215 -+---+---+---+---+---
218 -+---+---+---+---+---
223 Which means we need to grab the sample from x = 3. @ x = -1:
233 Which means we need to grab the sample from x = 1. Which means we have to take
234 the mirror of the modulus of gridPixels.
236 Doing a mod of a negative number is problematic: 1st, the compiler converts the
237 negative number to an unsigned int, then it does the mod. Gets you wrong answers
238 most of the time, unless you use a power of 2. :-P So what we do here is just
239 take the modulus of the negation, which means we don't have to worry about
242 The positive case looks gruesome (and it is) but it boils down to this: We take
243 the modulus of the X coordinate, then mirror it by subtraction from the
244 maximum (in this case, gridPixels). This gives us a number in the range of 1 to
245 gridPixels. But we need the case where the result equalling gridPixels to be
246 zero; so we do another modulus operation on the result to achieve this.
251 x = (gridPixels - (x % gridPixels)) % gridPixels;
256 y = (gridPixels - (y % gridPixels)) % gridPixels;
258 // Here we grab a section of the bigger pixmap, so that the background
259 // *looks* like it's scrolling...
260 QPixmap pm = gridBackground.copy(x, y, gridPixels, gridPixels);
261 QPalette pal = palette();
262 pal.setBrush(backgroundRole(), QBrush(pm));
263 setAutoFillBackground(true);
268 void DrawingView::SetCurrentLayer(int layer)
270 Global::currentLayer = layer;
271 //printf("DrawingView::CurrentLayer = %i\n", layer);
275 QPoint DrawingView::GetAdjustedMousePosition(QMouseEvent * event)
277 // This is undoing the transform, e.g. going from client coords to local coords.
278 // In essence, the height - y is height + (y * -1), the (y * -1) term doing the
279 // conversion of the y-axis from increasing bottom to top.
280 return QPoint(offsetX + event->x(), offsetY + (size().height() - event->y()));
284 QPoint DrawingView::GetAdjustedClientPosition(int x, int y)
286 // VOODOO ALERT (ON Y COMPONENT!!!!) (eh?)
287 // No voodoo here, it's just grouped wrong to see it. It should be:
288 // -offsetY + (size.height() + (y * -1.0)) <-- this is wrong, offsetY should be positive
289 return QPoint(-offsetX + x, (size().height() - (-offsetY + y)) * +1.0);
293 void DrawingView::paintEvent(QPaintEvent * /*event*/)
295 QPainter qtPainter(this);
296 Painter painter(&qtPainter);
299 qtPainter.setRenderHint(QPainter::Antialiasing);
301 Global::viewportHeight = size().height();
303 // Draw coordinate axes
304 painter.SetPen(QPen(Qt::blue, 1.0, Qt::DotLine));
305 painter.DrawLine(0, -16384, 0, 16384);
306 painter.DrawLine(-16384, 0, 16384, 0);
308 // Do object rendering...
309 RenderObjects(&painter, document.objects);
311 // Do tool rendering, if any...
314 painter.SetPen(QPen(QColor(200, 100, 0, 255), 1.0, Qt::DashLine));
315 painter.DrawCrosshair(oldPoint);
319 // Do selection rectangle rendering, if any
320 if (Global::selectionInProgress)
322 painter.SetPen(QPen(QColor(255, 127, 0, 255)));
323 painter.SetBrush(QBrush(QColor(255, 127, 0, 100)));
324 painter.DrawRect(Global::selection);
330 // Renders objects in the passed in vector
332 void DrawingView::RenderObjects(Painter * painter, std::vector<void *> & v)
334 std::vector<void *>::iterator i;
336 for(i=v.begin(); i!=v.end(); i++)
338 Object * obj = (Object *)(*i);
339 float scaledThickness = Global::scale * obj->thickness;
341 if ((Global::tool == TTRotate) && ctrlDown && obj->selected)
343 painter->SetPen(0x00FF00, 2.0, LSSolid);
347 painter->SetPen(obj->color, Global::zoom * scaledThickness, obj->style);
348 painter->SetBrush(obj->color);
350 if (obj->selected || obj->hitObject)
351 painter->SetPen(0xFF0000, Global::zoom * scaledThickness, LSDash);
358 Line * l = (Line *)obj;
359 painter->DrawLine(l->p[0], l->p[1]);
362 painter->DrawHandle(l->p[0]);
365 painter->DrawHandle(l->p[1]);
371 Circle * ci = (Circle *)obj;
372 painter->SetBrush(QBrush(Qt::NoBrush));
373 painter->DrawEllipse(ci->p[0], ci->radius, ci->radius);
378 Arc * a = (Arc *)obj;
379 painter->DrawArc(a->p[0], a->radius, a->angle1, a->angle2);
384 Dimension * d = (Dimension *)obj;
386 Vector v(d->p[0], d->p[1]);
387 double angle = v.Angle();
388 Vector unit = v.Unit();
389 Vector linePt1 = d->p[0], linePt2 = d->p[1];
391 double x1, y1, length;
393 if (d->subtype == DTLinearVert)
395 if ((angle < 0) || (angle > PI))
397 x1 = (d->p[0].x > d->p[1].x ? d->p[0].x : d->p[1].x);
398 y1 = (d->p[0].y > d->p[1].y ? d->p[0].y : d->p[1].y);
399 ortho = Vector(1.0, 0);
404 x1 = (d->p[0].x > d->p[1].x ? d->p[1].x : d->p[0].x);
405 y1 = (d->p[0].y > d->p[1].y ? d->p[1].y : d->p[0].y);
406 ortho = Vector(-1.0, 0);
410 linePt1.x = linePt2.x = x1;
411 length = fabs(d->p[0].y - d->p[1].y);
413 else if (d->subtype == DTLinearHorz)
415 if ((angle < PI_OVER_2) || (angle > PI3_OVER_2))
417 x1 = (d->p[0].x > d->p[1].x ? d->p[0].x : d->p[1].x);
418 y1 = (d->p[0].y > d->p[1].y ? d->p[0].y : d->p[1].y);
419 ortho = Vector(0, 1.0);
424 x1 = (d->p[0].x > d->p[1].x ? d->p[1].x : d->p[0].x);
425 y1 = (d->p[0].y > d->p[1].y ? d->p[1].y : d->p[0].y);
426 ortho = Vector(0, -1.0);
430 linePt1.y = linePt2.y = y1;
431 length = fabs(d->p[0].x - d->p[1].x);
433 else if (d->subtype == DTLinear)
435 angle = Vector(linePt1, linePt2).Angle();
436 ortho = Vector::Normal(linePt1, linePt2);
437 length = v.Magnitude();
440 unit = Vector(linePt1, linePt2).Unit();
442 Point p1 = linePt1 + (ortho * 10.0 * scaledThickness);
443 Point p2 = linePt2 + (ortho * 10.0 * scaledThickness);
444 Point p3 = linePt1 + (ortho * 16.0 * scaledThickness);
445 Point p4 = linePt2 + (ortho * 16.0 * scaledThickness);
446 Point p5 = d->p[0] + (ortho * 4.0 * scaledThickness);
447 Point p6 = d->p[1] + (ortho * 4.0 * scaledThickness);
450 The numbers hardcoded into here, what are they?
451 I believe they are pixels.
453 // Draw extension lines (if certain type)
454 painter->DrawLine(p3, p5);
455 painter->DrawLine(p4, p6);
457 // Calculate whether or not the arrowheads are too crowded to put inside
458 // the extension lines. 9.0 is the length of the arrowhead.
459 double t = Geometry::ParameterOfLineAndPoint(linePt1, linePt2, linePt2 - (unit * 9.0 * scaledThickness));
460 //printf("Dimension::Draw(): t = %lf\n", t);
462 // On the screen, it's acting like this is actually 58%...
463 // This is correct, we want it to happen at > 50%
466 // Draw main dimension line + arrowheads
467 painter->DrawLine(p1, p2);
468 painter->DrawArrowhead(p1, p2, scaledThickness);
469 painter->DrawArrowhead(p2, p1, scaledThickness);
473 // Draw outside arrowheads
474 Point p7 = p1 - (unit * 9.0 * scaledThickness);
475 Point p8 = p2 + (unit * 9.0 * scaledThickness);
476 painter->DrawArrowhead(p1, p7, scaledThickness);
477 painter->DrawArrowhead(p2, p8, scaledThickness);
478 painter->DrawLine(p1, p1 - (unit * 14.0 * scaledThickness));
479 painter->DrawLine(p2, p2 + (unit * 14.0 * scaledThickness));
482 // Draw length of dimension line...
483 painter->SetFont(QFont("Arial", 8.0 * Global::zoom * scaledThickness));
484 Point ctr = p2 + (Vector(p2, p1) / 2.0);
487 QString dimText = QString("%1\"").arg(Vector(endpoint - position).Magnitude());
492 dimText = QString("%1\"").arg(length);
495 double feet = (double)((int)length / 12);
496 double inches = length - (feet * 12.0);
499 dimText = QString("%1'").arg(feet);
501 dimText = QString("%1' %2\"").arg(feet).arg(inches);
505 painter->DrawAngledText(ctr, angle, dimText, scaledThickness);
511 Text * t = (Text *)obj;
512 painter->DrawTextObject(t->p[0], t->s.c_str(), scaledThickness);
522 void DrawingView::AddHoveredToSelection(void)
524 std::vector<void *>::iterator i;
526 for(i=document.objects.begin(); i!=document.objects.end(); i++)
528 if (((Object *)(*i))->hovered)
529 ((Object *)(*i))->selected = true;
534 void DrawingView::GetSelection(std::vector<void *> & v)
537 std::vector<void *>::iterator i;
539 for(i=document.objects.begin(); i!=document.objects.end(); i++)
541 if (((Object *)(*i))->selected)
547 void DrawingView::GetHovered(std::vector<void *> & v)
550 std::vector<void *>::iterator i;
552 for(i=document.objects.begin(); i!=document.objects.end(); i++)
554 if (((Object *)(*i))->hovered)
556 //printf("GetHovered: adding object (%X) to hover... hp1=%s, hp2=%s, hl=%s\n", (*i), (((Line *)(*i))->hitPoint[0] ? "true" : "false"), (((Line *)(*i))->hitPoint[1] ? "true" : "false"), (((Line *)(*i))->hitObject ? "true" : "false"));
563 void DrawingView::resizeEvent(QResizeEvent * /*event*/)
565 Global::screenSize = Vector(size().width(), size().height());
566 UpdateGridBackground();
570 void DrawingView::ToolHandler(int mode, Point p)
572 if (Global::tool == TTLine)
573 LineHandler(mode, p);
574 else if (Global::tool == TTRotate)
575 RotateHandler(mode, p);
579 void DrawingView::ToolDraw(Painter * painter)
581 if (Global::tool == TTLine)
583 if (Global::toolState == TSNone)
585 painter->DrawHandle(toolPoint[0]);
587 else if ((Global::toolState == TSPoint2) && shiftDown)
589 painter->DrawHandle(toolPoint[1]);
593 painter->DrawLine(toolPoint[0], toolPoint[1]);
594 painter->DrawHandle(toolPoint[1]);
596 Vector v(toolPoint[0], toolPoint[1]);
597 double absAngle = v.Angle() * RADIANS_TO_DEGREES;
598 double absLength = v.Magnitude();
599 QString text = tr("Length: %1 in.\n") + QChar(0x2221) + tr(": %2");
600 text = text.arg(absLength).arg(absAngle);
601 painter->DrawInformativeText(text);
604 else if (Global::tool == TTRotate)
606 if ((Global::toolState == TSNone) || (Global::toolState == TSPoint1))
607 painter->DrawHandle(toolPoint[0]);
608 else if ((Global::toolState == TSPoint2) && shiftDown)
609 painter->DrawHandle(toolPoint[1]);
612 if (toolPoint[0] == toolPoint[1])
615 painter->DrawLine(toolPoint[0], toolPoint[1]);
616 // Likely we need a tool container for this... (now we do!)
620 painter->SetPen(0x00FF00, 2.0, LSSolid);
621 overrideColor = true;
624 RenderObjects(painter, toolObjects);
625 overrideColor = false;
628 double absAngle = (Vector(toolPoint[1] - toolPoint[0]).Angle()) * RADIANS_TO_DEGREES;
630 QString text = QChar(0x2221) + QObject::tr(": %1");
631 text = text.arg(absAngle);
636 painter->DrawInformativeText(text);
642 void DrawingView::LineHandler(int mode, Point p)
647 if (Global::toolState == TSNone)
654 if (Global::toolState == TSNone)
661 if (Global::toolState == TSNone)
663 Global::toolState = TSPoint2;
664 // Prevent spurious line from drawing...
665 toolPoint[1] = toolPoint[0];
667 else if ((Global::toolState == TSPoint2) && shiftDown)
669 // Key override is telling us to make a new line, not continue the
671 toolPoint[0] = toolPoint[1];
675 Line * l = new Line(toolPoint[0], toolPoint[1]);
676 document.objects.push_back(l);
677 toolPoint[0] = toolPoint[1];
683 void DrawingView::RotateHandler(int mode, Point p)
688 if (Global::toolState == TSNone)
691 SavePointsFrom(select, toolScratch);
692 Global::toolState = TSPoint1;
694 else if (Global::toolState == TSPoint1)
701 if ((Global::toolState == TSPoint1) || (Global::toolState == TSNone))
703 else if (Global::toolState == TSPoint2)
710 double angle = Vector(toolPoint[1], toolPoint[0]).Angle();
711 std::vector<void *>::iterator j = select.begin();
712 std::vector<Object>::iterator i = toolScratch.begin();
714 for(; i!=toolScratch.end(); i++, j++)
717 Point p1 = Geometry::RotatePointAroundPoint(obj.p[0], toolPoint[0], angle);
718 Point p2 = Geometry::RotatePointAroundPoint(obj.p[1], toolPoint[0], angle);
719 Object * obj2 = (Object *)(*j);
727 if (Global::toolState == TSPoint1)
729 Global::toolState = TSPoint2;
730 // Prevent spurious line from drawing...
731 toolPoint[1] = toolPoint[0];
733 else if ((Global::toolState == TSPoint2) && shiftDown)
735 // Key override is telling us to make a new line, not continue the
737 toolPoint[0] = toolPoint[1];
741 // Either we're finished with our rotate, or we're stamping a copy.
744 // Stamp a copy of the selection at the current rotation & bail
745 std::vector<void *> temp;
746 CopyObjects(select, temp);
748 AddObjectsTo(document.objects, temp);
749 RestorePointsTo(select, toolScratch);
754 Global::toolState = TSPoint1;
755 SavePointsFrom(select, toolScratch);
760 // Reset the selection if shift held down...
762 RestorePointsTo(select, toolScratch);
766 // Reset selection when key is let up
768 RotateHandler(ToolMouseMove, toolPoint[1]);
772 RestorePointsTo(select, toolScratch);
777 void DrawingView::mousePressEvent(QMouseEvent * event)
779 if (event->button() == Qt::LeftButton)
781 Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
783 // Handle tool processing, if any
786 if (Global::snapToGrid)
787 point = SnapPointToGrid(point);
789 //Also, may want to figure out if hovering over a snap point on an object,
790 //snap to grid if not.
791 // Snap to object point if valid...
792 // if (Global::snapPointIsValid)
793 // point = Global::snapPoint;
795 ToolHandler(ToolMouseDown, point);
799 // Clear the selection only if CTRL isn't being held on click
801 ClearSelected(document.objects);
804 // If any objects are being hovered on click, add them to the selection
808 AddHoveredToSelection();
809 update(); // needed??
810 GetHovered(hover); // prolly needed
812 // Needed for grab & moving objects
813 if (Global::snapToGrid)
814 oldPoint = SnapPointToGrid(point);
819 // Didn't hit any object and not using a tool, so do a selection rectangle
820 Global::selectionInProgress = true;
821 Global::selection.setTopLeft(QPointF(point.x, point.y));
822 Global::selection.setBottomRight(QPointF(point.x, point.y));
824 else if (event->button() == Qt::MiddleButton)
827 oldPoint = Vector(event->x(), event->y());
828 // Should also change the mouse pointer as well...
829 setCursor(Qt::SizeAllCursor);
834 void DrawingView::mouseMoveEvent(QMouseEvent * event)
836 Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
837 Global::selection.setBottomRight(QPointF(point.x, point.y));
838 // Only needs to be done here, as mouse down is always preceded by movement
839 Global::snapPointIsValid = false;
842 if (event->buttons() & Qt::MiddleButton)
844 point = Vector(event->x(), event->y());
845 // Since we're using Qt coords for scrolling, we have to adjust them here to
846 // conform to Cartesian coords, since the origin is using Cartesian. :-)
847 Vector delta(oldPoint, point);
848 delta /= Global::zoom;
850 Global::origin -= delta;
852 UpdateGridBackground();
858 // If we're doing a selection rect, see if any objects are engulfed by it
859 // (implies left mouse button held down)
860 if (Global::selectionInProgress)
867 // Handle object movement (left button down & over an object)
868 if ((event->buttons() & Qt::LeftButton) && numHovered && !Global::tool)
870 HandleObjectMovement(point);
876 // Do object hit testing...
877 bool needUpdate = HitTestObjects(point);
879 // Do tool handling, if any are active...
882 if (Global::snapToGrid)
883 point = SnapPointToGrid(point);
885 ToolHandler(ToolMouseMove, point);
888 // This is used to draw the tool crosshair...
891 if (needUpdate || Global::tool)
896 void DrawingView::mouseReleaseEvent(QMouseEvent * event)
898 if (event->button() == Qt::LeftButton)
900 //We need to update especially if nothing collided and the state needs to change. !!! FIX !!!
901 //could set it up to use the document's update function (assumes that all object updates
902 //are being reported correctly:
903 // if (document.NeedsUpdate())
904 // Do an update if collided with at least *one* object in the document
910 Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
911 ToolHandler(ToolMouseUp, point);
915 if (Global::selectionInProgress)
917 // Select all the stuff inside of selection
918 Global::selectionInProgress = false;
925 std::vector<void *>::iterator i;
927 for(i=document.objects.begin(); i!=document.objects.end(); i++)
929 if (((Object *)(*i))->selected)
930 select.push_back(*i);
932 //hmm, this is no good, too late to do any good :-P
933 // if ((*i)->hovered)
934 // hover.push_back(*i);
938 else if (event->button() == Qt::MiddleButton)
941 setCursor(Qt::ArrowCursor);
946 void DrawingView::wheelEvent(QWheelEvent * event)
948 double zoomFactor = 1.25;
949 QSize sizeWin = size();
950 Vector center(sizeWin.width() / 2.0, sizeWin.height() / 2.0);
951 center = Painter::QtToCartesianCoords(center);
953 // This is not centering for some reason. Need to figure out why. :-/
954 if (event->delta() > 0)
956 Vector newOrigin = center - ((center - Global::origin) / zoomFactor);
957 Global::origin = newOrigin;
958 Global::zoom *= zoomFactor;
962 Vector newOrigin = center + ((-center + Global::origin) * zoomFactor);
963 Global::origin = newOrigin;
964 Global::zoom /= zoomFactor;
968 // Global::gridSpacing = gridPixels / Painter::zoom;
969 // UpdateGridBackground();
970 SetGridSize(Global::gridSpacing * Global::zoom);
972 // zoomIndicator->setText(QString("Grid: %1\", BU: Inch").arg(Global::gridSpacing));
977 void DrawingView::keyPressEvent(QKeyEvent * event)
979 bool oldShift = shiftDown;
980 bool oldCtrl = ctrlDown;
982 if (event->key() == Qt::Key_Shift)
984 else if (event->key() == Qt::Key_Control)
987 if ((oldShift != shiftDown) || (oldCtrl != ctrlDown))
990 ToolHandler(ToolKeyDown, Point(0, 0));
997 void DrawingView::keyReleaseEvent(QKeyEvent * event)
999 bool oldShift = shiftDown;
1000 bool oldCtrl = ctrlDown;
1002 if (event->key() == Qt::Key_Shift)
1004 else if (event->key() == Qt::Key_Control)
1007 if ((oldShift != shiftDown) || (oldCtrl != ctrlDown))
1010 ToolHandler(ToolKeyUp, Point(0, 0));
1017 // This looks strange, but it's really quite simple: We want a point that's
1018 // more than half-way to the next grid point to snap there while conversely we
1019 // want a point that's less than half-way to to the next grid point then snap
1020 // to the one before it. So we add half of the grid spacing to the point, then
1021 // divide by it so that we can remove the fractional part, then multiply it
1022 // back to get back to the correct answer.
1024 Point DrawingView::SnapPointToGrid(Point point)
1026 point += Global::gridSpacing / 2.0; // *This* adds to Z!!!
1027 point /= Global::gridSpacing;
1028 point.x = floor(point.x);//need to fix this for negative numbers...
1029 point.y = floor(point.y);
1030 point.z = 0; // Make *sure* Z doesn't go anywhere!!!
1031 point *= Global::gridSpacing;
1036 void DrawingView::CheckObjectBounds(void)
1038 std::vector<void *>::iterator i;
1041 for(i=document.objects.begin(); i!=document.objects.end(); i++)
1043 Object * obj = (Object *)(*i);
1044 obj->selected = false;
1050 Line * l = (Line *)obj;
1052 if (Global::selection.contains(l->p[0].x, l->p[0].y) && Global::selection.contains(l->p[1].x, l->p[1].y))
1059 Circle * c = (Circle *)obj;
1061 if (Global::selection.contains(c->p[0].x - c->radius, c->p[0].y - c->radius) && Global::selection.contains(c->p[0].x + c->radius, c->p[0].y + c->radius))
1068 Arc * a = (Arc *)obj;
1070 double start = a->angle1;
1071 double end = start + a->angle2;
1072 QPointF p1(cos(start), sin(start));
1073 QPointF p2(cos(end), sin(end));
1074 QRectF bounds(p1, p2);
1077 // Swap X/Y coordinates if they're backwards...
1078 if (bounds.left() > bounds.right())
1080 double temp = bounds.left();
1081 bounds.setLeft(bounds.right());
1082 bounds.setRight(temp);
1085 if (bounds.bottom() > bounds.top())
1087 double temp = bounds.bottom();
1088 bounds.setBottom(bounds.top());
1089 bounds.setTop(temp);
1092 // Doesn't work as advertised! For shame!
1093 bounds = bounds.normalized();
1096 // If the end of the arc is before the beginning, add 360 degrees to it
1100 // Adjust the bounds depending on which axes are crossed
1101 if ((start < PI_OVER_2) && (end > PI_OVER_2))
1104 if ((start < PI) && (end > PI))
1105 bounds.setLeft(-1.0);
1107 if ((start < (PI + PI_OVER_2)) && (end > (PI + PI_OVER_2)))
1108 bounds.setBottom(-1.0);
1110 if ((start < (2.0 * PI)) && (end > (2.0 * PI)))
1111 bounds.setRight(1.0);
1113 if ((start < ((2.0 * PI) + PI_OVER_2)) && (end > ((2.0 * PI) + PI_OVER_2)))
1116 if ((start < (3.0 * PI)) && (end > (3.0 * PI)))
1117 bounds.setLeft(-1.0);
1119 if ((start < ((3.0 * PI) + PI_OVER_2)) && (end > ((3.0 * PI) + PI_OVER_2)))
1120 bounds.setBottom(-1.0);
1122 bounds.setTopLeft(QPointF(bounds.left() * a->radius, bounds.top() * a->radius));
1123 bounds.setBottomRight(QPointF(bounds.right() * a->radius, bounds.bottom() * a->radius));
1124 bounds.translate(a->p[0].x, a->p[0].y);
1126 if (Global::selection.contains(bounds))
1141 bool DrawingView::HitTestObjects(Point point)
1143 std::vector<void *>::iterator i;
1145 bool needUpdate = false;
1147 for(i=document.objects.begin(); i!=document.objects.end(); i++)
1149 Object * obj = (Object *)(*i);
1155 Line * l = (Line *)obj;
1156 bool oldHP0 = l->hitPoint[0], oldHP1 = l->hitPoint[1], oldHO = l->hitObject;
1157 l->hitPoint[0] = l->hitPoint[1] = l->hitObject = false;
1158 Vector lineSegment = l->p[1] - l->p[0];
1159 Vector v1 = point - l->p[0];
1160 Vector v2 = point - l->p[1];
1161 double t = Geometry::ParameterOfLineAndPoint(l->p[0], l->p[1], point);
1165 distance = v1.Magnitude();
1167 distance = v2.Magnitude();
1169 // distance = ?Det?(ls, v1) / |ls|
1170 distance = fabs((lineSegment.x * v1.y - v1.x * lineSegment.y)
1171 / lineSegment.Magnitude());
1173 if ((v1.Magnitude() * Global::zoom) < 8.0)
1175 l->hitPoint[0] = true;
1176 // snapPoint = l->p1;
1177 // snapPointIsValid = true;
1179 else if ((v2.Magnitude() * Global::zoom) < 8.0)
1181 l->hitPoint[1] = true;
1182 // snapPoint = l->p2;
1183 // snapPointIsValid = true;
1185 else if ((distance * Global::zoom) < 5.0)
1186 l->hitObject = true;
1188 // bool oldHovered = l->hovered;
1189 l->hovered = (l->hitPoint[0] || l->hitPoint[1] || l->hitObject ? true : false);
1190 // l->hovered = l->hitObject;
1192 // if (oldHovered != l->hovered)
1193 if ((oldHP0 != l->hitPoint[0]) || (oldHP1 != l->hitPoint[1]) || (oldHO != l->hitObject))
1200 Circle * c = (Circle *)obj;
1212 //printf("MouseMove: OBJECT HOVERED (numHovered = %i)\n", numHovered);
1220 void DrawingView::HandleObjectMovement(Point point)
1222 if (Global::snapToGrid)
1223 point = SnapPointToGrid(point);
1225 Point delta = point - oldPoint;
1226 Object * obj = (Object *)hover[0];
1227 //printf("Object type = %i (size=%i), ", obj->type, hover.size());
1228 //printf("Object (%X) move: hp1=%s, hp2=%s, hl=%s\n", obj, (obj->hitPoint[0] ? "true" : "false"), (obj->hitPoint[1] ? "true" : "false"), (obj->hitObject ? "true" : "false"));
1234 Line * l = (Line *)obj;
1238 else if (l->hitPoint[1])
1240 else if (l->hitObject)
1256 // This returns true if we've moved over an object...
1257 if (document.PointerMoved(point)) // <-- This
1258 // This is where the object would do automagic dragging & shit. Since we don't
1259 // do that anymore, we need a strategy to handle it.
1263 Now objects handle mouse move snapping as well. The code below mainly works only
1264 for tools; we need to fix it so that objects work as well...
1266 There's a problem with the object point snapping in that it's dependent on the
1267 order of the objects in the document. Most likely this is because it counts the
1268 selected object last and thus fucks up the algorithm. Need to fix this...
1272 // Do object snapping here. Grid snapping on mouse down is done in the
1273 // objects themselves, only because we have to hit test the raw point,
1274 // not the snapped point. There has to be a better way...!
1275 if (document.penultimateObjectHovered)
1277 // Two objects are hovered, see if we have an intersection point
1278 if ((document.lastObjectHovered->type == OTLine) && (document.penultimateObjectHovered->type == OTLine))
1281 int n = Geometry::Intersects((Line *)document.lastObjectHovered, (Line *)document.penultimateObjectHovered, &t);
1285 Global::snapPoint = document.lastObjectHovered->GetPointAtParameter(t);
1286 Global::snapPointIsValid = true;
1289 else if ((document.lastObjectHovered->type == OTCircle) && (document.penultimateObjectHovered->type == OTCircle))
1292 int n = Geometry::Intersects((Circle *)document.lastObjectHovered, (Circle *)document.penultimateObjectHovered, 0, 0, 0, 0, &p1, &p2);
1296 Global::snapPoint = p1;
1297 Global::snapPointIsValid = true;
1301 double d1 = Vector(point, p1).Magnitude();
1302 double d2 = Vector(point, p2).Magnitude();
1305 Global::snapPoint = p1;
1307 Global::snapPoint = p2;
1309 Global::snapPointIsValid = true;
1315 // Otherwise, it was a single object hovered...
1321 if (Global::snapToGrid)
1322 point = Global::SnapPointToGrid(point);
1324 // We always snap to object points, and they take precendence over
1326 if (Global::snapPointIsValid)
1327 point = Global::snapPoint;
1329 toolAction->MouseMoved(point);