function polygonLinearGradient(&$gradient, &$polygon) {
$count = $polygon->count();
if($count >= 3) {
$left = $polygon->get(0);
$right = $polygon->get($count - 1);
if($gradient->angle === 0) {
// Get polygon maximum and minimum
$offset = $polygon->get(0);
$max = $min = $offset->y;
for($i = 1; $i < $count - 1; $i++) {
$offset = $polygon->get($i);
$max = max($max, $offset->y);
$min = min($min, $offset->y);
}
$this->init($gradient, $max - $min);
$prev = $polygon->get(1);
$sum = 0;
for($i = 2; $i < $count - 1; $i++) {
$current = $polygon->get($i);
$interval = 1;
if($i !== $count - 2) {
$current->x -= $interval;
}
if($current->x - $prev->x > 0) {
// Draw rectangle
$x1 = $prev->x;
$x2 = $current->x;
$y1 = max($prev->y, $current->y);
$y2 = $left->y;
$gradient = new awLinearGradient(
$this->color($max - $min - ($y2 - $y1)),
$this->color($max - $min),
0
);
if($y1 > $y2) {
$y2 = $y1;
}
$this->drawer->filledRectangle(
$gradient,
awLine::build($x1, $y1, $x2, $y2)
);
$top = ($prev->y < $current->y) ? $current : $prev;
$bottom = ($prev->y >= $current->y) ? $current : $prev;
$gradient = new awLinearGradient(
$this->color($bottom->y - $min),
$this->color($max - $min - ($y2 - $y1)),
0
);
$gradientDrawer = new awGradientDrawer($this->drawer);
$gradientDrawer->drawFilledFlatTriangle(
$gradient,
new awPoint($prev->x, min($prev->y, $current->y)),
$top,
new awPoint($current->x, min($prev->y, $current->y))
);
unset($gradientDrawer);
$sum += $current->x - $prev->x;
}
$prev = $current;
$prev->x += $interval;
}
} else if($gradient->angle === 90) {
$width = $right->x - $left->x;
$this->init($gradient, $width);
$pos = 1;
$next = $polygon->get($pos++);
$this->next($polygon, $pos, $prev, $next);
for($i = 0; $i <= $width; $i++) {
$x = $left->x + $i;
$y1 = round($prev->y + ($next->y - $prev->y) * (($i + $left->x - $prev->x) / ($next->x - $prev->x)));
$y2 = $left->y;
// Draw line
$color = $this->color($i);
// YaPB : PHP does not handle alpha on lines
$this->drawer->filledRectangle($color, awLine::build($x, $y1, $x, $y2));
$color->free();
unset($color);
// Jump to next point
if($next->x == $i + $left->x) {
$this->next($polygon, $pos, $prev, $next);
}
}
}
}
}
/**
* Draw grids
*
* @param awDriver $driver A driver object
* @param int $x1
* @param int $y1
* @param int $x2
* @param int $y2
*/
public function draw(awDriver $driver, $x1, $y1, $x2, $y2)
{
if ($this->background instanceof awColor) {
// Draw background color
$driver->filledRectangle($this->background, awLine::build($x1, $y1, $x2, $y2));
}
if ($this->hide === FALSE) {
$this->drawGrid($driver, $this->color, $this->hideVertical ? array() : $this->xgrid, $this->hideHorizontal ? array() : $this->ygrid, $x1, $y1, $x2, $y2, $this->type, $this->space, $this->interval[0], $this->interval[1]);
}
}
/**
* Draw a string
*
* @var &$text Text to print
* @param $point Draw the text at this point
* @param int $width Text max width
*/
function string(&$text, $point, $width = NULL)
{
$font = $text->getFont();
// Can we deal with that font?
if ($this->isCompatibleWithFont($font) === FALSE) {
awImage::drawError('Class MingDriver: Incompatible font type (\'' . get_class($font) . '\')');
}
// Ming can only work with awFileFont objects for now
// (i.e. awFDBFont, or awTuffy et al.)
$fontDriver = $this->fileFontDriver;
if ($text->getBackground() !== NULL or $text->border->visible()) {
list($left, $right, $top, $bottom) = $text->getPadding();
$textWidth = $fontDriver->getTextWidth($text, $this);
$textHeight = $fontDriver->getTextHeight($text, $this);
$x1 = floor($point->x - $left);
$y1 = floor($point->y - $top);
$x2 = $x1 + $textWidth + $left + $right;
$y2 = $y1 + $textHeight + $top + $bottom;
$this->filledRectangle($text->getBackground(), awLine::build($x1, $y1, $x2, $y2));
$text->border->rectangle($this, new awPoint($x1 - 1, $y1 - 1), new awPoint($x2 + 1, $y2 + 1));
}
$fontDriver->string($this, $text, $point, $width);
}
/**
* Draw grids
*
* @param $drawer A drawer object
* @param int $x1
* @param int $y1
* @param int $x2
* @param int $y2
*/
function draw($drawer, $x1, $y1, $x2, $y2)
{
if (is_a($this->background, 'awColor')) {
// Draw background color
$drawer->filledRectangle($this->background, awLine::build($x1, $y1, $x2, $y2));
$this->background->free();
}
if ($this->hide === FALSE) {
$this->drawGrid($drawer, $this->color, $this->hideVertical ? array() : $this->xgrid, $this->hideHorizontal ? array() : $this->ygrid, $x1, $y1, $x2, $y2, $this->type, $this->space, $this->interval[0], $this->interval[1]);
}
$this->color->free();
}
