function pDraw::drawGradientArea in Visitors 7

Same name and namespace in other branches

1. 7.2 pChart/class/pDraw.class.php \pDraw::drawGradientArea()

5 calls to pDraw::drawGradientArea()

pDraw::drawBarChart in pChart/class/pDraw.class.php

pDraw::drawDerivative in pChart/class/pDraw.class.php

pDraw::drawLabelBox in pChart/class/pDraw.class.php

pDraw::drawProgress in pChart/class/pDraw.class.php

pDraw::drawStackedBarChart in pChart/class/pDraw.class.php

File

pChart/class/pDraw.class.php, line 1031

Class

pDraw

Code

function drawGradientArea($X1, $Y1, $X2, $Y2, $Direction, $Format = "") {
  $StartR = isset($Format["StartR"]) ? $Format["StartR"] : 90;
  $StartG = isset($Format["StartG"]) ? $Format["StartG"] : 90;
  $StartB = isset($Format["StartB"]) ? $Format["StartB"] : 90;
  $EndR = isset($Format["EndR"]) ? $Format["EndR"] : 0;
  $EndG = isset($Format["EndG"]) ? $Format["EndG"] : 0;
  $EndB = isset($Format["EndB"]) ? $Format["EndB"] : 0;
  $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
  $Levels = isset($Format["Levels"]) ? $Format["Levels"] : NULL;
  $Shadow = $this->Shadow;
  $this->Shadow = FALSE;
  if ($StartR == $EndR && $StartG == $EndG && $StartB == $EndB) {
    $this
      ->drawFilledRectangle($X1, $Y1, $X2, $Y2, array(
      "R" => $StartR,
      "G" => $StartG,
      "B" => $StartB,
      "Alpha" => $Alpha,
    ));
    return 0;
  }
  if ($Levels != NULL) {
    $EndR = $StartR + $Levels;
    $EndG = $StartG + $Levels;
    $EndB = $StartB + $Levels;
  }
  if ($X1 > $X2) {
    list($X1, $X2) = array(
      $X2,
      $X1,
    );
  }
  if ($Y1 > $Y2) {
    list($Y1, $Y2) = array(
      $Y2,
      $Y1,
    );
  }
  if ($Direction == DIRECTION_VERTICAL) {
    $Width = abs($Y2 - $Y1);
  }
  if ($Direction == DIRECTION_HORIZONTAL) {
    $Width = abs($X2 - $X1);
  }
  $Step = max(abs($EndR - $StartR), abs($EndG - $StartG), abs($EndB - $StartB));
  $StepSize = $Width / $Step;
  $RStep = ($EndR - $StartR) / $Step;
  $GStep = ($EndG - $StartG) / $Step;
  $BStep = ($EndB - $StartB) / $Step;
  $R = $StartR;
  $G = $StartG;
  $B = $StartB;
  switch ($Direction) {
    case DIRECTION_VERTICAL:
      $StartY = $Y1;
      $EndY = floor($Y2) + 1;
      $LastY2 = $StartY;
      for ($i = 0; $i <= $Step; $i++) {
        $Y2 = floor($StartY + $i * $StepSize);
        if ($Y2 > $EndY) {
          $Y2 = $EndY;
        }
        if ($Y1 != $Y2 && $Y1 < $Y2 || $Y2 == $EndY) {
          $Color = array(
            "R" => $R,
            "G" => $G,
            "B" => $B,
            "Alpha" => $Alpha,
          );
          $this
            ->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Color);
          $LastY2 = max($LastY2, $Y2);
          $Y1 = $Y2 + 1;
        }
        $R = $R + $RStep;
        $G = $G + $GStep;
        $B = $B + $BStep;
      }
      if ($LastY2 < $EndY && isset($Color)) {
        for ($i = $LastY2 + 1; $i <= $EndY; $i++) {
          $this
            ->drawLine($X1, $i, $X2, $i, $Color);
        }
      }
      break;
    case DIRECTION_HORIZONTAL:
      $StartX = $X1;
      $EndX = $X2;
      for ($i = 0; $i <= $Step; $i++) {
        $X2 = floor($StartX + $i * $StepSize);
        if ($X2 > $EndX) {
          $X2 = $EndX;
        }
        if ($X1 != $X2 && $X1 < $X2 || $X2 == $EndX) {
          $Color = array(
            "R" => $R,
            "G" => $G,
            "B" => $B,
            "Alpha" => $Alpha,
          );
          $this
            ->drawFilledRectangle($X1, $Y1, $X2, $Y2, $Color);
          $X1 = $X2 + 1;
        }
        $R = $R + $RStep;
        $G = $G + $GStep;
        $B = $B + $BStep;
      }
      if ($X2 < $EndX && isset($Color)) {
        $this
          ->drawFilledRectangle($X2, $Y1, $EndX, $Y2, $Color);
      }
      break;
  }
  $this->Shadow = $Shadow;
}