Merge pull request #67 from szymach/tests

Fixes, updated docs and Travis

.travis.yml

@@ -6,8 +6,9 @@ cache:
 
 matrix:
     include:
-        - php: 5.5
         - php: 5.6
+          env:
+            - COMPOSER_FLAGS='--prefer-lowest'
         - php: 7.0
         - php: 7.1
         - php: 7.2

resources/doc/spline.md

@@ -10,10 +10,10 @@ use CpChart\Image;
 
 // Create and populate data
 $data = new Data();
-$data->addPoints([], "Serie1")
+$data->addPoints([], "Serie1");
 
 // Create the image and set the data
-$image = $factory->newImage(700, 230, $data);
+$image = new Image(700, 230, $data);
 $image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 20]);
 
 // 1st spline drawn in white with control points visible

src/Draw.php

@@ -2489,6 +2489,7 @@ public function drawLegend($X, $Y, array $Format = [])
      */
     public function drawScale(array $Format = [])
     {
+        $FloatingOffset = 0;
         $Pos = isset($Format["Pos"]) ? $Format["Pos"] : SCALE_POS_LEFTRIGHT;
         $Floating = isset($Format["Floating"]) ? $Format["Floating"] : false;
         $Mode = isset($Format["Mode"]) ? $Format["Mode"] : SCALE_MODE_FLOATING;

src/Image.php

@@ -34,10 +34,7 @@ public function __construct(
 
         $this->TransparentBackground = $TransparentBackground;
 
-        if ($DataSet) {
-            $this->DataSet = $DataSet;
-        }
-
+        $this->DataSet = null !== $DataSet ? $DataSet : new Data();
         $this->XSize = $XSize;
         $this->YSize = $YSize;
         $this->Picture = imagecreatetruecolor($XSize, $YSize);