src/tests/add-ons/print/pdf/bezierbounds/BBView.cpp

   1 #include "BezierBounds.h"
   2 #include "BBView.h"
   3 #include <InterfaceKit.h>
   4
   5 BBView::BBView(BRect rect)
   6         : BView(rect, NULL, B_FOLLOW_ALL_SIDES, B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE | B_SUBPIXEL_PRECISE) {
   7         //SetViewColor(B_TRANSPARENT_COLOR);
   8         fMode = kStroke;
   9         fCurPoint = -1;
  10         fWidth = 16;
  11 }
  12
  13 void BBView::Draw(BRect updateRect) {
  14         if (fMode == kDrawOutline) {
  15
  16         } else if (fMode == kStroke) {
  17                 int i;
  18                 if (fPath.CountPoints() > 3) {
  19                         const int n = 3 * ((fPath.CountPoints()-1) / 3);
  20                         BShape shape;
  21                         shape.MoveTo(fPath.PointAt(0));
  22                         for (i = 1; i < n; i += 3) {
  23                                 BPoint bezier[3] = { fPath.PointAt(i), fPath.PointAt(i+1), fPath.PointAt(i+2) };
  24                                 shape.BezierTo(bezier);
  25                         }
  26                         if (fPath.IsClosed()) shape.Close();
  27                         SetPenSize(fWidth);
  28                         StrokeShape(&shape);
  29
  30                         BRect bounds[2];
  31                         SetPenSize(1);
  32                         SetHighColor(255, 0, 0);
  33                         SetLowColor(0, 255, 0);
  34                         for (i = 0; i < n; i += 3) {
  35                                 BPoint bezier[4] = { fPath.PointAt(i), fPath.PointAt(i+1), fPath.PointAt(i+2), fPath.PointAt(i+3) };
  36                                 BRect r = BezierBounds(bezier, 4);
  37                                 StrokeRect(r);
  38                                 if (i == 0) bounds[0] = r; else bounds[0] = bounds[0] | r;
  39                                 r = BezierBounds(bezier, 4, fWidth, LineCapMode(), LineJoinMode(), LineMiterLimit());
  40                                 StrokeRect(r, B_SOLID_LOW);
  41                                 if (i == 0) bounds[1] = r; else bounds[1] = bounds[1] | r;
  42                         }
  43                         if (fPath.IsClosed()) {
  44                                 StrokeRect(bounds[0]);
  45                                 StrokeRect(bounds[1], B_SOLID_LOW);
  46                         }
  47                 }
  48
  49                 SetHighColor(0, 0, 255);
  50                 for (i = 0; i < fPath.CountPoints(); i++) {
  51                         BPoint p = fPath.PointAt(i);
  52                         StrokeLine(BPoint(p.x-2, p.y), BPoint(p.x+2, p.y));
  53                         StrokeLine(BPoint(p.x, p.y-2), BPoint(p.x, p.y+2));
  54                 }
  55         }
  56 }
  57
  58 void BBView::MouseDown(BPoint point) {
  59         uint32 buttons;
  60         GetMouse(&point, &buttons, false);
  61
  62         if (buttons == B_SECONDARY_MOUSE_BUTTON) {
  63                 fCurPoint = fPath.CountPoints();
  64                 fPath.AddPoint(point);
  65         } else {
  66                 float d = 100000000000.0;
  67                 for (int i = 0; i < fPath.CountPoints(); i++) {
  68                         BPoint p = point - fPath.PointAt(i);
  69                         float e = p.x*p.x + p.y*p.y;
  70                         if (e < d) { fCurPoint = i; d = e; }
  71                 }
  72                 fPath.AtPut(fCurPoint, point);
  73         }
  74         Invalidate();
  75 }
  76
  77 void BBView::MouseMoved(BPoint point, uint32 transit, const BMessage *message) {
  78         if (fCurPoint != -1) {
  79                 fPath.AtPut(fCurPoint, point);
  80                 Invalidate();
  81         }
  82 }
  83
  84 void BBView::MouseUp(BPoint point) {
  85         fCurPoint = -1;
  86 }
  87
  88 void BBView::SetClose(bool close) {
  89         if (close) fPath.Close();
  90         else fPath.Open();
  91 }