// (C) 2011 Underground Software
// See the README and GPLv3 files for licensing and warranty information
//
-// JLH = James L. Hammons <jlhamm@acm.org>
+// JLH = James Hammons <jlhamm@acm.org>
//
// WHO WHEN WHAT
// --- ---------- ------------------------------------------------------------
{
}
+
Painter::~Painter()
{
}
+
Vector Painter::CartesianToQtCoords(Vector v)
{
// Convert regular Cartesian coordinates to the inverted Y-axis Qt coordinates
return Vector((v.x - origin.x) * zoom, screenSize.y - ((v.y - origin.y) * zoom));
}
-Vector Painter::QtCoordsToCartesian(Vector v)
+
+Vector Painter::QtToCartesianCoords(Vector v)
{
// Convert screen location, with inverted Y-axis coordinates, to regular
// Cartesian coordinates at the current zoom level.
*/
}
+
void Painter::SetRenderHint(int hint)
{
if (!painter)
painter->setRenderHint((QPainter::RenderHint)hint);
}
+
void Painter::SetBrush(QBrush brush)
{
if (!painter)
painter->setBrush(brush);
}
+
void Painter::SetFont(QFont font)
{
if (!painter)
painter->setFont(font);
}
+
void Painter::SetPen(QPen pen)
{
if (!painter)
painter->setPen(pen);
}
-void Painter::DrawAngledText(Vector center, double angle, QString text)
+
+void Painter::DrawAngledText(Vector center, double angle, QString text, double size)
{
+ if (!painter)
+ return;
+
+ // Strategy: Since Qt doesn't have any rotated text drawing functions,
+ // we instead translate the origin to the center of the text to be drawn and
+ // then rotate the frame to the desired angle.
center = CartesianToQtCoords(center);
// We may need this stuff... If dimension text is large enough.
// int textWidth = QFontMetrics(painter->font()).width(text);
// int textHeight = QFontMetrics(painter->font()).height();
- QRectF textBox(-100, -100, 200, 200); // x, y, w, h; x/y = upper left corner
+ QRectF textBox(-100.0 * zoom * size, -100.0 * zoom * size, 200.0 * zoom * size, 200.0 * zoom * size); // x, y, w, h; x/y = upper left corner
- // Some things to note here: if angle > 90 degrees, then we need to take the negative
- // of the angle for our text.
- painter->save();
- painter->translate(center.x, center.y);
// This is in pixels. Might not render correctly at all zoom levels.
- // Need to figure out if dimensions are always rendered at one size regardless of zoom,
- // or if they have a definite size, and are thus zoomable.
- // If zoomable, this is incorrect:
- int yOffset = -12;
+ // Need to figure out if dimensions are always rendered at one size
+ // regardless of zoom, or if they have a definite size, and are thus
+ // zoomable.
+ float yOffset = -12.0 * zoom * size;
- //Fix text so it isn't upside down...
+ // Fix text so it isn't upside down...
if ((angle > PI * 0.5) && (angle < PI * 1.5))
{
angle += PI;
- yOffset = 12;
+ yOffset = 12.0 * zoom * size;
}
textBox.translate(0, yOffset);
- // Angles are backwards in the Qt coord system...
+ painter->save();
+ painter->translate(center.x, center.y);
+ // Angles are backwards in the Qt coord system, so we flip ours...
painter->rotate(-angle * RADIANS_TO_DEGREES);
+//Need to fix this so the text scales as well...
painter->drawText(textBox, Qt::AlignCenter, text);
painter->restore();
}
+
void Painter::DrawArc(Vector center, double radius, double startAngle, double span)
{
center = CartesianToQtCoords(center);
+ // Need to multiply scalar quantities by the zoom factor as well...
+ radius *= zoom;
QRectF rectangle(QPointF(center.x - radius, center.y - radius),
QPointF(center.x + radius, center.y + radius));
int angle1 = (int)(startAngle * RADIANS_TO_DEGREES * 16.0);
painter->drawArc(rectangle, angle1, angle2);
}
+
void Painter::DrawEllipse(Vector center, double axis1, double axis2)
+{
+ // Need to multiply scalar quantities by the zoom factor as well...
+ center = CartesianToQtCoords(center);
+ painter->drawEllipse(QPointF(center.x, center.y), axis1 * zoom, axis2 * zoom);
+}
+
+
+// This function is for drawing object handles without regard for zoom level;
+// we don't want our object handle size to depend on the zoom level!
+void Painter::DrawHandle(Vector center)
{
center = CartesianToQtCoords(center);
- painter->drawEllipse(QPointF(center.x, center.y), axis1, axis2);
+ painter->setBrush(Qt::NoBrush);
+ painter->drawEllipse(QPointF(center.x, center.y), 4.0, 4.0);
}
+
void Painter::DrawLine(int x1, int y1, int x2, int y2)
{
if (!painter)
painter->drawLine(v1.x, v1.y, v2.x, v2.y);
}
+
void Painter::DrawLine(Vector v1, Vector v2)
{
if (!painter)
painter->drawLine(QPointF(v1.x, v1.y), QPointF(v2.x, v2.y));
}
+
void Painter::DrawPoint(int x, int y)
{
if (!painter)
painter->drawPoint(v.x, v.y);
}
+
+// This is drawn in Qt coordinates...
void Painter::DrawRoundedRect(QRectF rect, double radiusX, double radiusY)
{
if (!painter)
painter->drawRoundedRect(rect, radiusX, radiusY);
}
+
+// This is drawn partially in Cartesian coordinates, and partially in Qt
+// coordinates. The rect itself is in Cartesian but we want to pad it by a set
+// number of pixels.
+void Painter::DrawPaddedRect(QRectF rect)
+{
+ if (!painter)
+ return;
+
+ Vector v1 = CartesianToQtCoords(Vector(rect.x(), rect.y()));
+ Vector v2 = CartesianToQtCoords(Vector(rect.right(), rect.bottom()));
+ QRectF screenRect(QPointF(v1.x, v1.y), QPointF(v2.x, v2.y));
+ screenRect.adjust(-8, 8, 8, -8); // Left/top, right/bottom
+ painter->drawRect(screenRect);
+}
+
+
+void Painter::DrawRect(QRectF rect)
+{
+ if (!painter)
+ return;
+
+ Vector v1 = CartesianToQtCoords(Vector(rect.x(), rect.y()));
+ Vector v2 = CartesianToQtCoords(Vector(rect.right(), rect.bottom()));
+ QRectF screenRect(QPointF(v1.x, v1.y), QPointF(v2.x, v2.y));
+ painter->drawRect(screenRect);
+}
+
+
void Painter::DrawText(QRectF rect, int type, QString text)
{
if (!painter)
painter->drawText(rect, (Qt::AlignmentFlag)type, text);
}
+
+void Painter::DrawArrowhead(Vector head, Vector tail, double size)
+{
+ QPolygonF arrow;
+
+ // We draw the arrowhead aligned along the line from tail to head
+ double angle = Vector(head - tail).Angle();
+ double orthoAngle = angle + (PI / 2.0);
+ Vector orthogonal = Vector(cos(orthoAngle), sin(orthoAngle));
+ Vector unit = Vector(head - tail).Unit();
+
+ Point p1 = head - (unit * 9.0 * size);
+ Point p2 = p1 + (orthogonal * 3.0 * size);
+ Point p3 = p1 - (orthogonal * 3.0 * size);
+
+ Point p4 = CartesianToQtCoords(head);
+ Point p5 = CartesianToQtCoords(p2);
+ Point p6 = CartesianToQtCoords(p3);
+
+ arrow << QPointF(p4.x, p4.y) << QPointF(p5.x, p5.y) << QPointF(p6.x, p6.y);
+
+ painter->drawPolygon(arrow);
+}
+
projects / architektonas / blobdiff