彻底改版2.0

2021-11-17 16:41:30 +08:00
parent a7f4347959
commit ebfd531a91
2622 changed files with 8915 additions and 7263 deletions
--- a/third/qwtdemo/examples/itemeditor/shapefactory.cpp
+++ b/third/qwtdemo/examples/itemeditor/shapefactory.cpp
@@ -0,0 +1,113 @@
+#include "shapefactory.h"
+
+QPainterPath ShapeFactory::path( Shape shape, 
+    const QPointF &pos, const QSizeF &size )
+{
+    QRectF rect;
+    rect.setSize( size );
+    rect.moveCenter( pos );
+    
+    QPainterPath path;
+
+    switch( shape )
+    {
+        case Rect:
+        {
+            path.addRect( rect );
+            break;
+        }
+        case Triangle:
+        {
+            QPolygonF triangle;
+            triangle += rect.bottomLeft();
+            triangle += QPointF( rect.center().x(), rect.top() );
+            triangle += rect.bottomRight();
+
+            path.addPolygon( triangle );
+            break;
+        }
+        case Ellipse:
+        {
+            path.addEllipse( rect );
+            break;
+        }
+        case Ring:
+        {
+            path.addEllipse( rect );
+
+            const double w = 0.25 * rect.width();
+            path.addEllipse( rect.adjusted( w, w, -w, -w ) );
+            break;
+        }
+        case Star:
+        {
+            const double cos30 = 0.866025;
+
+            const double dy = 0.25 * size.height();
+            const double dx = 0.5 * size.width() * cos30 / 3.0;
+
+            double x1 = pos.x() - 3 * dx;
+            double y1 = pos.y() - 2 * dy;
+
+            const double x2 = x1 + 1 * dx;
+            const double x3 = x1 + 2 * dx;
+            const double x4 = x1 + 3 * dx;
+            const double x5 = x1 + 4 * dx;
+            const double x6 = x1 + 5 * dx;
+            const double x7 = x1 + 6 * dx;
+
+            const double y2 = y1 + 1 * dy;
+            const double y3 = y1 + 2 * dy;
+            const double y4 = y1 + 3 * dy;
+            const double y5 = y1 + 4 * dy;
+
+            QPolygonF star;
+            star += QPointF( x4, y1 );
+            star += QPointF( x5, y2 );
+            star += QPointF( x7, y2 );
+            star += QPointF( x6, y3 );
+            star += QPointF( x7, y4 );
+            star += QPointF( x5, y4 );
+            star += QPointF( x4, y5 );
+            star += QPointF( x3, y4 );
+            star += QPointF( x1, y4 );
+            star += QPointF( x2, y3 );
+            star += QPointF( x1, y2 );
+            star += QPointF( x3, y2 );
+
+            path.addPolygon( star );
+            break;
+        }
+        case Hexagon:
+        {
+            const double cos30 = 0.866025; 
+
+            const double dx = 0.5 * size.width() - cos30;
+            const double dy = 0.25 * size.height();
+
+            double x1 = pos.x() - dx;
+            double y1 = pos.y() - 2 * dy;
+
+            const double x2 = x1 + 1 * dx;
+            const double x3 = x1 + 2 * dx;
+
+            const double y2 = y1 + 1 * dy;
+            const double y3 = y1 + 3 * dy;
+            const double y4 = y1 + 4 * dy;
+
+            QPolygonF hexagon;
+            hexagon += QPointF( x2, y1 );
+            hexagon += QPointF( x3, y2 );
+            hexagon += QPointF( x3, y3 );
+            hexagon += QPointF( x2, y4 );
+            hexagon += QPointF( x1, y3 );
+            hexagon += QPointF( x1, y2 );
+
+            path.addPolygon( hexagon );
+            break;
+        }
+    };
+
+    path.closeSubpath();
+    return path;
+}