/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2019  Olive Team

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#include "keyframedrawing.h"

#include "effects/effect.h"
#include "timeline/clip.h"

#define KEYFRAME_POINT_COUNT 4

// routine for drawing a keyframe onscreen
void draw_keyframe(QPainter &p, int type, int x, int y, bool darker, int r, int g, int b) {
  if (darker) {
    r *= 0.625;
    g *= 0.625;
    b *= 0.625;
  }
  p.setPen(QColor(0, 0, 0));
  p.setBrush(QColor(r, g, b));

  switch (type) {
  case EFFECT_KEYFRAME_LINEAR:
  {
    QPoint points[KEYFRAME_POINT_COUNT] = {QPoint(x-KEYFRAME_SIZE, y), QPoint(x, y-KEYFRAME_SIZE), QPoint(x+KEYFRAME_SIZE, y), QPoint(x, y+KEYFRAME_SIZE)};
    p.drawPolygon(points, KEYFRAME_POINT_COUNT);
  }
    break;
  case EFFECT_KEYFRAME_BEZIER:
    p.drawEllipse(QPoint(x, y), KEYFRAME_SIZE, KEYFRAME_SIZE);
    break;
  case EFFECT_KEYFRAME_HOLD:
    p.drawRect(QRect(x - KEYFRAME_SIZE, y - KEYFRAME_SIZE, KEYFRAME_SIZE*2, KEYFRAME_SIZE*2));
    break;
  }

  p.setBrush(Qt::NoBrush);
}

// adjusts keyframe's internal time (in clip time) to timeline time
long adjust_row_keyframe(EffectRow* row, long time, long visible_in) {
    return time
        - row->GetParentEffect()->parent_clip->clip_in()
        + (row->GetParentEffect()->parent_clip->timeline_in() - visible_in);
}