// FIXED:
//
+// - Redo rendering code to *not* use Qt's transform functions, as they are tied
+// to a left-handed system and we need a right-handed one. [DONE]
//
// STILL TO BE DONE:
//
-// - Redo rendering code to *not* use Qt's transform functions, as they are tied
-// to a left-handed system and we need a right-handed one.
+// - Lots of stuff
//
// Uncomment this for debugging...
#include "arc.h"
#include "circle.h"
#include "dimension.h"
-#include "drawcircleaction.h"
-#include "drawlineaction.h"
#include "line.h"
#include "painter.h"
+#define BACKGROUND_MAX_SIZE 512
+
+// Class variable
+//Container DrawingView::document(Vector(0, 0));
+
+
DrawingView::DrawingView(QWidget * parent/*= NULL*/): QWidget(parent),
// The value in the settings file will override this.
useAntialiasing(true),
+ gridBackground(BACKGROUND_MAX_SIZE, BACKGROUND_MAX_SIZE),
scale(1.0), offsetX(-10), offsetY(-10),
document(Vector(0, 0)),
- gridSpacing(32.0), collided(false), rotateTool(false), rx(150.0), ry(150.0),
- scrollDrag(false), addLineTool(false), toolAction(NULL)
+ /*gridSpacing(12.0),*/ gridPixels(0), collided(false), //rotateTool(false),
+// rx(150.0), ry(150.0),
+// scrollDrag(false), addLineTool(false), addCircleTool(false),
+// addDimensionTool(false),
+ toolAction(NULL)
{
+ document.isTopLevelContainer = true;
setBackgroundRole(QPalette::Base);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+ Object::gridSpacing = 12.0;
// toolPalette = new ToolWindow();
// CreateCursors();
// setCursor(cur[TOOLSelect]);
document.Add(new Arc(Vector(300, 300), 32, PI / 4.0, PI * 1.3, &document)),
document.Add(new Arc(Vector(200, 200), 60, PI / 2.0, PI * 1.5, &document));
#if 1
- Dimension * dimension = new Dimension(Vector(0, 0), Vector(0, 0), &document);
+ Dimension * dimension = new Dimension(Vector(0, 0), Vector(0, 0), DTLinear, &document);
line->SetDimensionOnLine(dimension);
document.Add(dimension);
#else
// Alternate way to do the above...
line->SetDimensionOnLine();
#endif
-// connect(toolAction, SIGNAL(ObjectReady(Object *)), this,
-// SLOT(AddNewObjectToDocument(Object *)));
-}
-void DrawingView::SetRotateToolActive(bool state/*= true*/)
-{
- rotateTool = state;
- update();
+/*
+Here we set the grid size in pixels--12 in this case. Initially, we have our
+zoom set to make this represent 12 inches at a zoom factor of 25%. (This is
+arbitrary.) So, to be able to decouple the grid size from the zoom, we need
+to be able to set the size of the background grid (which we do here at an
+arbitrary 12 pixels) to anything we want (within reason, of course :-).
+
+The drawing enforces the grid spacing through the drawing->gridSpacing variable.
+
+ drawing->gridSpacing = 12.0 / Painter::zoom;
+
+Painter::zoom is the zoom factor for the drawing, and all mouse clicks are
+translated to Cartesian coordinates through this. (Initially, Painter::zoom is
+set to 1.0. SCREEN_ZOOM is set to 1.0/4.0.)
+
+Really, the 100% zoom level can be set at *any* zoom level, it's more of a
+convenience function than any measure of absolutes. Doing things that way we
+could rid ourselves of the whole SCREEN_ZOOM parameter and all the attendant
+shittyness that comes with it.
+
+However, it seems that SCREEN_ZOOM is used to make text and arrow sizes show up
+a certain way, which means we should probably create something else in those
+objects to take its place--like some kind of scale factor. This would seem to
+imply that certain point sizes actually *do* tie things like fonts to absolute
+sizes on the screen, but not necessarily because you could have an inch scale
+with text that is quite small relative to other objects on the screen, which
+currently you have to zoom in to see (and which blows up the text). Point sizes
+in an application like this are a bit meaningless; even though an inch is an
+inch regardless of the zoom level a piece of text can be larger or smaller than
+this. Maybe this is the case for having a base unit and basing point sizes off
+of that.
+
+Here's what's been figured out. Painter::zoom is simply the ratio of pixels to
+base units. What that means is that if you have a 12px grid with a 6" grid size
+(& base unit of "inches"), Painter::zoom becomes 12px / 6" = 2.0 px/in.
+
+Dimensions now have a "size" parameter to set their absolute size in relation
+to the base unit. ATM, the arrows are drawn in pixels, but also scaled by
+Painter::zoom *and* size. Same with the dimension text; it's drawn at 10pt and
+scaled the same way as the arrowheads.
+
+Need a way to scale line widths as well. :-/ Shouldn't be too difficult, just
+need a thickness parameter similar to the "size" param for dimensions. (And now
+we do! :-)
+
+*/
+ SetGridSize(12);
}
-void DrawingView::SetAddLineToolActive(bool state/*= true*/)
+
+void DrawingView::SetToolActive(Action * action)
{
- if (state && toolAction == NULL)
+ if (action != NULL)
{
- toolAction = new DrawLineAction();
+ toolAction = action;
connect(toolAction, SIGNAL(ObjectReady(Object *)), this,
SLOT(AddNewObjectToDocument(Object *)));
+ connect(toolAction, SIGNAL(NeedRefresh()), this, SLOT(HandleActionUpdate()));
}
- else if (!state && toolAction)
- {
- delete toolAction;
- toolAction = NULL;
- }
-
- addLineTool = state;
- update();
-//printf("DrawingView::SetAddLineToolActive(). toolAction=%08X\n", toolAction);
}
-void DrawingView::SetAddCircleToolActive(bool state/*= true*/)
+
+void DrawingView::SetGridSize(uint32_t size)
{
- if (state && toolAction == NULL)
- {
- toolAction = new DrawCircleAction();
- connect(toolAction, SIGNAL(ObjectReady(Object *)), this,
- SLOT(AddNewObjectToDocument(Object *)));
- }
- else if (!state && toolAction)
+ // Sanity check
+ if (size == gridPixels)
+ return;
+
+ // Recreate the background bitmap
+ gridPixels = size;
+ QPainter pmp(&gridBackground);
+ pmp.fillRect(0, 0, BACKGROUND_MAX_SIZE, BACKGROUND_MAX_SIZE, QColor(240, 240, 240));
+ pmp.setPen(QPen(QColor(210, 210, 255), 2.0, Qt::SolidLine));
+
+ for(int i=0; i<(BACKGROUND_MAX_SIZE-1); i+=gridPixels)
{
- delete toolAction;
- toolAction = NULL;
+ pmp.drawLine(i, 0, i, BACKGROUND_MAX_SIZE - 1);
+ pmp.drawLine(0, i, BACKGROUND_MAX_SIZE - 1, i);
}
- addCircleTool = state;
- update();
-//printf("DrawingView::SetAddLineToolActive(). toolAction=%08X\n", toolAction);
+ pmp.end();
+
+ // Set up new BG brush & zoom level (pixels per base unit)
+// Painter::zoom = gridPixels / gridSpacing;
+ Painter::zoom = gridPixels / Object::gridSpacing;
+ UpdateGridBackground();
}
+
+void DrawingView::UpdateGridBackground(void)
+{
+ // Transform the origin to Qt coordinates
+ Vector pixmapOrigin = Painter::CartesianToQtCoords(Vector());
+ int x = (int)pixmapOrigin.x;
+ int y = (int)pixmapOrigin.y;
+ // Use mod arithmetic to grab the correct swatch of background
+/*
+Negative numbers still screw it up... Need to think about what we're
+trying to do here. The fact that it worked with 72 seems to have been pure luck.
+It seems the problem is negative numbers: We can't let that happen.
+When taking away the zero, it pops over 1 px at zero, then goes about 1/2 a
+grid at x<0.
+
+The bitmap looks like this:
+
++---+---+---+---+---
+| | | | |
+| | | | |
++---+---+---+---+---
+| | | | |
+| | | | |
+| | | | |
+
+@ x = 1, we want it to look like:
+
+-+---+---+---+---+---
+ | | | | |
+ | | | | |
+-+---+---+---+---+---
+ | | | | |
+ | | | | |
+ | | | | |
+
+Which means we need to grab the sample from x = 3. @ x = -1:
+
+---+---+---+---+---
+ | | | |
+ | | | |
+---+---+---+---+---
+ | | | |
+ | | | |
+ | | | |
+
+Which means we need to grab the sample from x = 1. Which means we have to take
+the mirror of the modulus of gridPixels.
+
+Doing a mod of a negative number is problematic: 1st, the compiler converts the
+negative number to an unsigned int, then it does the mod. Gets you wrong answers
+most of the time, unless you use a power of 2. :-P So what we do here is just
+take the modulus of the negation, which means we don't have to worry about
+mirroring it later.
+
+The positive case looks gruesome (and it is) but it boils down to this: We take
+the modulus of the X coordinate, then mirror it by subtraction from the
+maximum (in this case, gridPixels). This gives us a number in the range of 1 to
+gridPixels. But we need the case where the result equalling gridPixels to be
+zero; so we do another modulus operation on the result to achieve this.
+*/
+ if (x < 0)
+ x = -x % gridPixels;
+ else
+ x = (gridPixels - (x % gridPixels)) % gridPixels;
+
+ if (y < 0)
+ y = -y % gridPixels;
+ else
+ y = (gridPixels - (y % gridPixels)) % gridPixels;
+
+ // Here we grab a section of the bigger pixmap, so that the background
+ // *looks* like it's scrolling...
+ QPixmap pm = gridBackground.copy(x, y, gridPixels, gridPixels);
+ QPalette pal = palette();
+ pal.setBrush(backgroundRole(), QBrush(pm));
+ setAutoFillBackground(true);
+ setPalette(pal);
+}
+
+
void DrawingView::AddNewObjectToDocument(Object * object)
{
if (object)
//printf("DrawingView::AddNewObjectToDocument(). object=%08X\n", object);
}
+
+void DrawingView::HandleActionUpdate(void)
+{
+ update();
+}
+
+
+void DrawingView::SetCurrentLayer(int layer)
+{
+ Object::currentLayer = layer;
+//printf("DrawingView::CurrentLayer = %i\n", layer);
+}
+
+
QPoint DrawingView::GetAdjustedMousePosition(QMouseEvent * event)
{
// This is undoing the transform, e.g. going from client coords to local coords.
return QPoint(offsetX + event->x(), offsetY + (size().height() - event->y()));
}
+
QPoint DrawingView::GetAdjustedClientPosition(int x, int y)
{
// VOODOO ALERT (ON Y COMPONENT!!!!) (eh?)
return QPoint(-offsetX + x, (size().height() - (-offsetY + y)) * +1.0);
}
+
void DrawingView::paintEvent(QPaintEvent * /*event*/)
{
QPainter qtPainter(this);
if (useAntialiasing)
qtPainter.setRenderHint(QPainter::Antialiasing);
- Painter::screenSize = Vector(size().width(), size().height());
Object::SetViewportHeight(size().height());
// Draw coordinate axes
-
painter.SetPen(QPen(Qt::blue, 1.0, Qt::DotLine));
painter.DrawLine(0, -16384, 0, 16384);
painter.DrawLine(-16384, 0, 16384, 0);
- // Draw supplemental (tool related) points
+ // The top level document takes care of rendering for us...
+ document.Draw(&painter);
- if (rotateTool)
+ if (toolAction)
{
- painter.SetPen(QPen(QColor(0, 200, 0), 2.0, Qt::SolidLine));
- painter.DrawLine(rx - 10, ry, rx + 10, ry);
- painter.DrawLine(rx, ry - 10, rx, ry + 10);
+ painter.SetPen(QPen(QColor(200, 100, 0, 255), 1.0, Qt::DashLine));
+ painter.DrawCrosshair(oldPoint);
+ toolAction->Draw(&painter);
}
-// Maybe we can make the grid into a background brush instead, and let Qt deal
-// with it???
- // Draw grid
-
-#if 0
- painter.setPen(QPen(QColor(90, 90, 90), 1.0, Qt::DotLine));
-
- //these two loops kill performance!
- // Also, these overwrite our coordinate axes
- for(double x=0; x<size().width(); x+=gridSpacing*10.0)
- painter.drawLine((int)x, -16384, (int)x, 16384);
-
- for(double y=0; y<size().height(); y+=gridSpacing*10.0)
- painter.drawLine(-16384, (int)y, 16384, (int)y);
-#endif
-
- painter.SetPen(QPen(Qt::black, 1.0, Qt::SolidLine));
+ if (Object::selectionInProgress)
+ {
+ painter.SetPen(QPen(QColor(255, 127, 0, 255)));
+ painter.SetBrush(QBrush(QColor(255, 127, 0, 100)));
+ painter.DrawRect(Object::selection);
+ }
+}
- for(double x=0; x<size().width(); x+=gridSpacing)
- for(double y=0; y<size().height(); y+=gridSpacing)
- painter.DrawPoint((int)x, (int)y);
- // The top level document takes care of rendering for us...
- document.Draw(&painter);
-
- if (toolAction)
- toolAction->Draw(&painter);
+void DrawingView::resizeEvent(QResizeEvent * /*event*/)
+{
+ Painter::screenSize = Vector(size().width(), size().height());
+ UpdateGridBackground();
}
+
void DrawingView::mousePressEvent(QMouseEvent * event)
{
if (event->button() == Qt::LeftButton)
{
Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
+
+// Problem with this: Can't select stuff very well with the snap grid on.
+// Completely screws things up, as sometimes things don't fall on the grid.
+/*
+So, how to fix this? Have the Object check itself?
+Maybe we can fix this by having the initial point not be snapped, but when there's
+a drag, we substitute the snapped point 'oldPoint' which the Object keeps track of
+internally to know how far it was dragged...
+
+Now we do... :-/
+*/
+#if 0
+ if (Object::snapToGrid)
+ point = Object::SnapPointToGrid(point);
+#endif
+
collided = document.Collided(point);
if (collided)
update(); // Do an update if collided with at least *one* object in the document
if (toolAction)
+ {
+ if (Object::snapToGrid)
+ point = Object::SnapPointToGrid(point);
+
toolAction->MouseDown(point);
+ }
+
+ // Didn't hit any object and not using a tool, so do a selection rectangle
+ if (!(collided || toolAction))
+ {
+ Object::selectionInProgress = true;
+ Object::selection.setTopLeft(QPointF(point.x, point.y));
+ Object::selection.setBottomRight(QPointF(point.x, point.y));
+ }
}
else if (event->button() == Qt::MiddleButton)
{
}
}
+
void DrawingView::mouseMoveEvent(QMouseEvent * event)
{
Vector point = Painter::QtToCartesianCoords(Vector(event->x(), event->y()));
+ Object::selection.setBottomRight(QPointF(point.x, point.y));
if (event->buttons() & Qt::MiddleButton)
{
delta /= Painter::zoom;
delta.y = -delta.y;
Painter::origin -= delta;
+
+ UpdateGridBackground();
update();
oldPoint = point;
return;
}
// Grid processing...
-#if 1
- // 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.
- if (event->buttons() & Qt::LeftButton)
+ if ((event->buttons() & Qt::LeftButton) && Object::snapToGrid)
{
- point += gridSpacing / 2.0; // *This* adds to Z!!!
- point /= 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 *= gridSpacing;
+ point = Object::SnapPointToGrid(point);
}
-#endif
+
+ oldPoint = point;
//we should keep track of the last point here and only pass this down *if* the point
//changed...
document.PointerMoved(point);
- if (document.NeedsUpdate())
+ if (document.NeedsUpdate() || Object::selectionInProgress)
update();
if (toolAction)
{
+ if (Object::snapToGrid)
+ {
+ point = Object::SnapPointToGrid(point);
+ oldPoint = point;
+ }
+
toolAction->MouseMoved(point);
update();
}
}
+
void DrawingView::mouseReleaseEvent(QMouseEvent * event)
{
if (event->button() == Qt::LeftButton)
if (toolAction)
toolAction->MouseReleased();
+
+ if (Object::selectionInProgress)
+ {
+ // Select all the stuff inside of selection
+ Object::selectionInProgress = false;
+ }
}
else if (event->button() == Qt::MiddleButton)
{
setCursor(Qt::ArrowCursor);
}
}
+
+
+void DrawingView::wheelEvent(QWheelEvent * event)
+{
+ double zoomFactor = 1.25;
+ QSize sizeWin = /*drawing->*/size();
+ Vector center(sizeWin.width() / 2.0, sizeWin.height() / 2.0);
+ center = Painter::QtToCartesianCoords(center);
+
+ if (event->delta() > 0)
+ {
+ Vector newOrigin = center - ((center - Painter::origin) / zoomFactor);
+ Painter::origin = newOrigin;
+ Painter::zoom *= zoomFactor;
+ }
+ else
+ {
+ Vector newOrigin = center + ((-center + Painter::origin) * zoomFactor);
+ Painter::origin = newOrigin;
+ Painter::zoom /= zoomFactor;
+ }
+
+// Object::gridSpacing = /*drawing->*/gridPixels / Painter::zoom;
+ SetGridSize(Object::gridSpacing * Painter::zoom);
+// /*drawing->*/UpdateGridBackground();
+ /*drawing->*/update();
+// zoomIndicator->setText(QString("Grid: %1\", BU: Inch").arg(Object::gridSpacing));
+}
+
+
+void DrawingView::keyPressEvent(QKeyEvent * event)
+{
+ if (toolAction)
+ toolAction->KeyDown(event->key());
+}
+
+
+void DrawingView::keyReleaseEvent(QKeyEvent * event)
+{
+ if (toolAction)
+ toolAction->KeyReleased(event->key());
+}
+
projects / architektonas / blobdiff