function CalculateThumbnailDimensions()
{
$this->DebugMessage('CalculateThumbnailDimensions() starting with [W,H,sx,sy,sw,sh] initially set to [' . $this->source_width . ',' . $this->source_height . ',' . $this->sx . ',' . $this->sy . ',' . $this->sw . ',' . $this->sh . ']', __FILE__, __LINE__);
//echo $this->source_width.'x'.$this->source_height.'<hr>';
$this->thumbnailCropX = $this->sx ? $this->sx >= 2 ? $this->sx : round($this->sx * $this->source_width) : 0;
//echo $this->thumbnailCropX.'<br>';
$this->thumbnailCropY = $this->sy ? $this->sy >= 2 ? $this->sy : round($this->sy * $this->source_height) : 0;
//echo $this->thumbnailCropY.'<br>';
$this->thumbnailCropW = $this->sw ? $this->sw >= 2 ? $this->sw : round($this->sw * $this->source_width) : $this->source_width;
//echo $this->thumbnailCropW.'<br>';
$this->thumbnailCropH = $this->sh ? $this->sh >= 2 ? $this->sh : round($this->sh * $this->source_height) : $this->source_height;
//echo $this->thumbnailCropH.'<hr>';
// limit source area to original image area
$this->thumbnailCropW = max(1, min($this->thumbnailCropW, $this->source_width - $this->thumbnailCropX));
$this->thumbnailCropH = max(1, min($this->thumbnailCropH, $this->source_height - $this->thumbnailCropY));
$this->DebugMessage('CalculateThumbnailDimensions() starting with [x,y,w,h] initially set to [' . $this->thumbnailCropX . ',' . $this->thumbnailCropY . ',' . $this->thumbnailCropW . ',' . $this->thumbnailCropH . ']', __FILE__, __LINE__);
if ($this->zc && $this->w && $this->h) {
// Zoom Crop
// retain proportional resizing we did above, but crop off larger dimension so smaller
// dimension fully fits available space
$scaling_X = $this->source_width / $this->w;
$scaling_Y = $this->source_height / $this->h;
if ($scaling_X > $scaling_Y) {
// some of the width will need to be cropped
$allowable_width = $this->source_width / $scaling_X * $scaling_Y;
$this->thumbnailCropW = round($allowable_width);
$this->thumbnailCropX = round(($this->source_width - $allowable_width) / 2);
} elseif ($scaling_Y > $scaling_X) {
// some of the height will need to be cropped
$allowable_height = $this->source_height / $scaling_Y * $scaling_X;
$this->thumbnailCropH = round($allowable_height);
$this->thumbnailCropY = round(($this->source_height - $allowable_height) / 2);
} else {
// image fits perfectly, no cropping needed
}
$this->thumbnail_width = $this->w;
$this->thumbnail_height = $this->h;
$this->thumbnail_image_width = $this->thumbnail_width;
$this->thumbnail_image_height = $this->thumbnail_height;
} elseif ($this->iar && $this->w && $this->h) {
// Ignore Aspect Ratio
// stretch image to fit exactly 'w' x 'h'
$this->thumbnail_width = $this->w;
$this->thumbnail_height = $this->h;
$this->thumbnail_image_width = $this->thumbnail_width;
$this->thumbnail_image_height = $this->thumbnail_height;
} else {
$original_aspect_ratio = $this->thumbnailCropW / $this->thumbnailCropH;
if ($this->aoe) {
if ($this->w && $this->h) {
$maxwidth = min($this->w, $this->h * $original_aspect_ratio);
$maxheight = min($this->h, $this->w / $original_aspect_ratio);
} elseif ($this->w) {
$maxwidth = $this->w;
$maxheight = $this->w / $original_aspect_ratio;
} elseif ($this->h) {
$maxwidth = $this->h * $original_aspect_ratio;
$maxheight = $this->h;
} else {
$maxwidth = $this->thumbnailCropW;
$maxheight = $this->thumbnailCropH;
}
} else {
$maxwidth = phpthumb_functions::nonempty_min($this->w, $this->thumbnailCropW, $this->config_output_maxwidth);
$maxheight = phpthumb_functions::nonempty_min($this->h, $this->thumbnailCropH, $this->config_output_maxheight);
//echo $maxwidth.'x'.$maxheight.'<br>';
$maxwidth = min($maxwidth, $maxheight * $original_aspect_ratio);
$maxheight = min($maxheight, $maxwidth / $original_aspect_ratio);
//echo $maxwidth.'x'.$maxheight.'<hr>';
}
$this->thumbnail_image_width = $maxwidth;
$this->thumbnail_image_height = $maxheight;
$this->thumbnail_width = $maxwidth;
$this->thumbnail_height = $maxheight;
$this->FixedAspectRatio();
}
$this->thumbnail_width = max(1, floor($this->thumbnail_width));
$this->thumbnail_height = max(1, floor($this->thumbnail_height));
return true;
}
