//+----------------------------------------------------------------------------+
//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
//| Copyright:    (C) 2001 - 2017 Twan van Laarhoven and Sean Hunt             |
//| License:      GNU General Public License 2 or later (see file COPYING)     |
//+----------------------------------------------------------------------------+

// ----------------------------------------------------------------------------- : Includes

#include <util/prec.hpp>
#include <render/value/viewer.hpp>
#include <render/card/viewer.hpp>

DECLARE_TYPEOF_COLLECTION(wxPoint);

// ----------------------------------------------------------------------------- : ValueViewer

ValueViewer::ValueViewer(DataViewer& parent, const StyleP& style)
  : StyleListener(style), viewer(parent)
{}

Package& ValueViewer::getStylePackage() const { return viewer.getStylePackage(); }
Package& ValueViewer::getLocalPackage() const { return viewer.getLocalPackage(); }

void ValueViewer::setValue(const ValueP& value) {
  assert(value->fieldP == styleP->fieldP); // matching field
  if (valueP == value) return;
  valueP = value;
  onValueChange();
}

bool ValueViewer::containsPoint(const RealPoint& p) const {
  return getMask().isOpaque(p, styleP->getSize());
}
RealRect ValueViewer::boundingBox() const {
  return styleP->getExternalRect().grow(1);
}

Rotation ValueViewer::getRotation() const {
  return Rotation(deg_to_rad(getStyle()->angle), getStyle()->getExternalRect(), 1.0, getStretch());
}

bool ValueViewer::setFieldBorderPen(RotatedDC& dc) {
  if (!getField()->editable) return false;
  DrawWhat what = viewer.drawWhat(this);
  if (!(what & DRAW_BORDERS)) return false;
  dc.SetPen( (what & DRAW_ACTIVE)
                 ? wxPen(Color(0,128,255),   1, wxSOLID)
                 : wxPen(Color(128,128,128), 1, wxDOT)
           );
  return true;
}

void ValueViewer::drawFieldBorder(RotatedDC& dc) {
  if (setFieldBorderPen(dc)) {
    dc.SetBrush(*wxTRANSPARENT_BRUSH);
    const AlphaMask& alpha_mask = getMask(dc);
    if (alpha_mask.isLoaded()) {
      // from mask
      vector<wxPoint> points;
      alpha_mask.convexHull(points);
      if (points.size() < 3) return;
      FOR_EACH(p, points) p = dc.trPixelNoZoom(RealPoint(p.x,p.y));
      dc.getDC().DrawPolygon((int)points.size(), &points[0]);
    } else {
      // simple rectangle
      dc.DrawRectangle(dc.getInternalRect().grow(dc.trInvS(1)));
    }
  }
}

const AlphaMask& ValueViewer::getMask(int w, int h) const {
  GeneratedImage::Options opts(w, h, &getStylePackage(), &getLocalPackage());
  return styleP->mask.get(opts);
}
const AlphaMask& ValueViewer::getMask(const Rotation& rot) const {
  return getMask((int)rot.trX(styleP->width), (int)rot.trY(styleP->height));
}


void ValueViewer::redraw() {
  viewer.redraw(*this);
}

bool ValueViewer::nativeLook() const {
  return viewer.nativeLook();
}
bool ValueViewer::isCurrent() const {
  return viewer.viewerIsCurrent(this);
}

void ValueViewer::onStyleChange(int changes) {
  if (!(changes & CHANGE_ALREADY_PREPARED)) {
    viewer.redraw(*this);
  }
}