Initial work on bringing sanity to insane codebase.

[architektonas] / src / painter.cpp

diff --git a/src/painter.cpp b/src/painter.cpp
index 308cab6b7bd87ed587cb884ae52113f1173abaad..bdac361f59b64d7f68b2aca874ac169c0d92837d 100644 (file)
--- a/src/painter.cpp
+++ b/src/painter.cpp
@@ -15,6 +15,8 @@
 #include "painter.h"
 
 #include "mathconstants.h"
+//#include "object.h"
+#include "global.h"
 
 
 // Set class variable defaults
@@ -176,6 +178,53 @@ void Painter::DrawHandle(Vector center)
 }
 
 
+// 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::DrawArrowHandle(Vector center, double angle)
+{
+       center = CartesianToQtCoords(center);
+       QPolygonF arrow;
+
+       // Since we're drawing directly on the screen, the Y is inverted. So we use
+       // the mirror of the angle.
+       double orthoAngle = -angle + (PI / 2.0);
+       Vector orthogonal = Vector(cos(orthoAngle), sin(orthoAngle));
+       Vector unit = Vector(cos(-angle), sin(-angle));
+
+       Point p0 = center + (unit * 6.0);
+       Point p1 = center + (unit * 21.0);
+       Point p1b = center + (unit * 11.0);
+       Point p2 = p1b + (orthogonal * 5.0);
+       Point p3 = p1b - (orthogonal * 5.0);
+
+       painter->drawLine(p0.x, p0.y, p1.x, p1.y);
+       arrow << QPointF(p1.x, p1.y) << QPointF(p2.x, p2.y) << QPointF(p3.x, p3.y);
+
+       painter->drawPolygon(arrow);
+}
+
+
+// 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::DrawArrowToLineHandle(Vector center, double angle)
+{
+       DrawArrowHandle(center, angle);
+       center = CartesianToQtCoords(center);
+
+       // Since we're drawing directly on the screen, the Y is inverted. So we use
+       // the mirror of the angle.
+       double orthoAngle = -angle + (PI / 2.0);
+       Vector orthogonal = Vector(cos(orthoAngle), sin(orthoAngle));
+       Vector unit = Vector(cos(-angle), sin(-angle));
+
+       Point p1 = center + (unit * 21.0);
+       Point p2 = p1 + (orthogonal * 7.0);
+       Point p3 = p1 - (orthogonal * 7.0);
+
+       painter->drawLine(p2.x, p2.y, p3.x, p3.y);
+}
+
+
 void Painter::DrawLine(int x1, int y1, int x2, int y2)
 {
        if (!painter)
@@ -208,7 +257,7 @@ void Painter::DrawPoint(int x, int y)
 }
 
 
-// This is drawn in Qt coordinates...
+// The rect passed in is in Qt coordinates...
 void Painter::DrawRoundedRect(QRectF rect, double radiusX, double radiusY)
 {
        if (!painter)
@@ -218,9 +267,8 @@ void Painter::DrawRoundedRect(QRectF rect, double radiusX, double 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.
+// The rect passed in is in Cartesian but we want to pad it by a set number of
+// pixels (currently set at 8), so the pad looks the same regardless of zoom.
 void Painter::DrawPaddedRect(QRectF rect)
 {
        if (!painter)
@@ -257,6 +305,9 @@ void Painter::DrawText(QRectF rect, int type, QString text)
 
 void Painter::DrawArrowhead(Vector head, Vector tail, double size)
 {
+       if (!painter)
+               return;
+
        QPolygonF arrow;
 
        // We draw the arrowhead aligned along the line from tail to head
@@ -278,3 +329,34 @@ void Painter::DrawArrowhead(Vector head, Vector tail, double size)
        painter->drawPolygon(arrow);
 }
 
+
+// Point is given in Cartesian coordinates
+void Painter::DrawCrosshair(Vector point)
+{
+       if (!painter)
+               return;
+
+       Vector screenPoint = CartesianToQtCoords(point);
+       painter->drawLine(0, screenPoint.y, screenSize.x, screenPoint.y);
+       painter->drawLine(screenPoint.x, 0, screenPoint.x, screenSize.y);
+}
+
+
+void Painter::DrawInformativeText(QString text)
+{
+       painter->setFont(*Global::font);
+       QRectF bounds = painter->boundingRect(QRectF(), Qt::AlignVCenter, text);
+       bounds.moveTo(17.0, 17.0);
+       QRectF textRect = bounds;
+       textRect.adjust(-7.0, -7.0, 7.0, 7.0);
+
+       QPen pen = QPen(QColor(0x00, 0xFF, 0x00), 1.0, Qt::SolidLine);
+       painter->setPen(pen);
+       painter->setBrush(QBrush(QColor(0x40, 0xFF, 0x40, 0x9F)));
+       painter->drawRoundedRect(textRect, 7.0, 7.0);
+
+       pen = QPen(QColor(0x00, 0x5F, 0xDF));
+       painter->setPen(pen);
+       painter->drawText(bounds, Qt::AlignVCenter, text);
+}
+