imagefilledrectangle

(PHP 3, PHP 4, PHP 5)

imagefilledrectangle -- 画一矩形并填充

说明

bool imagefilledrectangle ( resource image, int x1, int y1, int x2, int y2, int color )

imagefilledrectangle()image 图像中画一个用 color 颜色填充了的矩形,其左上角坐标为 x1y1,右下角坐标为 x2y2。0, 0 是图像的最左上角。


add a note add a note User Contributed Notes
info at 555webdesign dot com
26-Oct-2006 01:13
Thanks terereese. it took me over two hours to figure that one out.
it worked locally: imagefilledrectangle(imagresource, int x1, int x2, int y1, inty2, color)

BUT remote on my provider only this worked: imagefilledrectangle(imagresource, int x1, int y2, int x1, inty1, color)

Any ideas why and where?
terereese at hotmail dot com
12-Jul-2006 11:02
I would like to inform developers about a problem I encountered when trying to use imagefilledrectangle.

I noted that the order in which the start and end y coordinates are listed is extremely important.
as in the statements below.
if($this->d_values[$i]['unit_value'] < 0)
imagefilledrectangle($this->img,$position_x, $start_y , $end_x, $end_y ,$d_color);           
else               
imagefilledrectangle($this->img, $position_x,$ end_y , $end_x, $start_y,$d_colour);           
          

Thanks
administrador(ensaimada)sphoera(punt)com
03-May-2006 06:33
I've made a function to make full color gradients:

<?php

// The image must be in truecolor mode!!
  
function gradient_region($img, $x, $y, $width, $height,$src_color, $dest_color=0){
      
$src_alpha = ($src_color) >> 24;
      
$src_red = ($src_color & 0xFF0000) >> 16;
      
$src_green = ($src_color & 0x00FF00) >> 8;
      
$src_blue = ($src_color & 0x0000FF);
      
      
$dest_alpha = ($dest_color) >> 24;
      
$dest_red = ($dest_color & 0xFF0000) >> 16;
      
$dest_green = ($dest_color & 0x00FF00) >> 8;
      
$dest_blue = ($dest_color & 0x0000FF);
          
          
      
$inc_alpha = ($dest_alpha - $src_alpha) / $width;
      
$inc_red = ($dest_red - $src_red)/$width;
      
$inc_green = ($dest_green - $src_green)/$width;
      
$inc_blue = ($dest_blue - $src_blue)/$width;
      
      
// If you need more performance, the step can be increased
      
for ($i=0;$i<$width;$i++){
          
$src_alpha += $inc_alpha;
          
$src_blue += $inc_blue;
          
$src_green += $inc_green;
          
$src_red += $inc_red;
          
imagefilledrectangle($img,
              
$x+$i,$y,       
              
$x+$i,$y+$height,
              
imagecolorallocatealpha($img,
              
$src_red,$src_green,$src_blue,$src_alpha));
       }
   }
?>

More functions at http://www.sphoera.com
spam at junk dot dk
15-Apr-2006 06:42
A different kind of rating bar, using michal's rounded corners function :) I saw this type of rating bar somewhere and thought it looked cool, so the 'design' is a complete ripoff.

Also, note that it scales quite well, from tiny 3x3 pixel dots to huge 300x300 pixel blocks. (Man am I proud of this thing.. well, enjoy!)

/Scarpia

<?php

Header
("Content-type: image/png");
drawRatingBlocks($rating);

function
drawRatingBlocks($rating) {
  
$rating = $_GET['rating'];
  
$width = $_GET['width'];
  
$height = $_GET['height'];
  
$blocks = $_GET['blocks'];

   if (
$width == 0) $width = 130;
   if (
$height == 0) $height = 13;

  
$spacing = max(1, floor($height/6) );

   if (
$blocks == 0) $blocks = floor( $width / ($height-2 + $spacing) );

  
$blockwidth = floor( $width / $blocks ) - $spacing;
  
$short_side = min($height-2, $blockwidth);
  
$blockvalue = 100 / $blocks;

  
$image = ImageCreate($width,$height);
  
$img2 = ImageCreate($width,$height);

  
// Define base colors
  
$back = ImageColorAllocate($image,255,255,255);
  
$blur = ImageColorAllocate($image,230,223,188);
  
$fill = ImageColorAllocate($image,188,182,133);
  
$lightblur = ImageColorAllocate($image,238,235,216); // Would be nice to calculate these dynamically instead
  
$lightfill = ImageColorAllocate($image,221,217,193); // Would be nice to calculate these dynamically instead
  
ImagePaletteCopy($img2,$image);

  
ImageFilledRectangle($image,0,0,$width-1,$height-1,$back);
  
ImageFilledRectangle($img2,0,0,$width-1,$height-1,$back);
  
   if (
$short_side < 25)
      
$radius = 1;
   else if (
$short_side < 40)
      
$radius = 3;
   else if (
$short_side < 50)
      
$radius = 5;
   else
      
$radius = floor($height/10);

   for(
$i=0;$i<$blocks;$i++) {
      
$startX = ($blockwidth+$spacing)*$i + 1;
       if ((
9 <= $short_side) && ($short_side <= 16))
       {
          
ImageFilledRectangle($image, $startX, 1, $startX+$blockwidth-1, $height-2, $lightblur);
          
ImageFilledRectangle($img2, $startX, 1, $startX+$blockwidth-1, $height-2, $lightfill);
       }
      
ImageRectangleWithRoundedCorners($image, $startX, 1, $startX+$blockwidth-1, $height-2, $radius, $blur);
      
ImageRectangleWithRoundedCorners($img2, $startX, 1, $startX+$blockwidth-1, $height-2, $radius, $fill);
   }

  
$barwidth = ($rating/100)*$blocks*$blockwidth;
  
$barwidth += floor($barwidth/$blockwidth)*$spacing+1;

  
ImageCopy( $image, $img2, 0, 0, 0, 0, $barwidth, $height );
  
ImageDestroy($img2);

  
ImagePNG($image);
  
ImageDestroy($image);
}

function
ImageRectangleWithRoundedCorners(&$im, $x1, $y1, $x2, $y2, $radius, $color)
{
  
// Draw rectangle without corners
  
ImageFilledRectangle($im, $x1+$radius, $y1, $x2-$radius, $y2, $color);
  
ImageFilledRectangle($im, $x1, $y1+$radius, $x2, $y2-$radius, $color);
  
// Draw circled corners
  
ImageFilledEllipse($im, $x1+$radius, $y1+$radius, $radius*2, $radius*2, $color);
  
ImageFilledEllipse($im, $x2-$radius, $y1+$radius, $radius*2, $radius*2, $color);
  
ImageFilledEllipse($im, $x1+$radius, $y2-$radius, $radius*2, $radius*2, $color);
  
ImageFilledEllipse($im, $x2-$radius, $y2-$radius, $radius*2, $radius*2, $color);
}

?>
TMG
01-Feb-2006 10:18
you can also add the rating til to the image
me [a.t.] forestfactory [d.o.t.] de
13-Oct-2005 07:44
As of PHP 5, it seems to be no longer necessary to draw the rectangle from the upper left to the lower right corner. This led me into big trouble porting a script developed under PHP 5 to PHP 4.
michal dot kocarek at seznam dot cz
31-May-2004 04:18
If you want to draw a rectangle with rounded corners, you can use this simple function...
Rectangle starts at x1y1 and ends at x2y2. $radius defines radius of circled corner.

<?

function ImageRectangleWithRoundedCorners(&$im, $x1, $y1, $x2, $y2, $radius, $color) {
// draw rectangle without corners
imagefilledrectangle($im, $x1+$radius, $y1, $x2-$radius, $y2, $color);
imagefilledrectangle($im, $x1, $y1+$radius, $x2, $y2-$radius, $color);
// draw circled corners
imagefilledellipse($im, $x1+$radius, $y1+$radius, $radius*2, $radius*2, $color);
imagefilledellipse($im, $x2-$radius, $y1+$radius, $radius*2, $radius*2, $color);
imagefilledellipse($im, $x1+$radius, $y2-$radius, $radius*2, $radius*2, $color);
imagefilledellipse($im, $x2-$radius, $y2-$radius, $radius*2, $radius*2, $color);
}

?>
sdonie at lgc dot com
28-May-2004 01:19
I made some simple additions to the 'ratings bar' example above to allow for different sizes. It also doesn't assume that global GET variables is turned on, and explicitly looks for parameters it needs.

----
<?php

// copied from the PHP manual:
// http://us3.php.net/manual/en/function.imagefilledrectangle.php
//this needs to reside in its own php page
//you can include that php page in your html as you would an image:
//<IMG SRC="makebar.php?rating=25.2&width=200&height=20" border="0">
// rating is a percentage from 0 to 100.

function drawRating($rating) {
  
$width = $_GET['width'];
  
$height = $_GET['height'];
   if (
$width == 0) {
    
$width = 102;
   }
   if (
$height == 0) {
    
$height = 10;
   }

  
$rating = $_GET['rating'];
  
$ratingbar = (($rating/100)*$width)-2;

  
$image = imagecreate($width,$height);
  
//colors
  
$back = ImageColorAllocate($image,255,255,255);
  
$border = ImageColorAllocate($image,0,0,0);
  
$red = ImageColorAllocate($image,255,60,75);
  
$fill = ImageColorAllocate($image,44,81,150);

  
ImageFilledRectangle($image,0,0,$width-1,$height-1,$back);
  
ImageFilledRectangle($image,1,1,$ratingbar,$height-1,$fill);
  
ImageRectangle($image,0,0,$width-1,$height-1,$border);
  
imagePNG($image);
  
imagedestroy($image);
}

Header("Content-type: image/png");
drawRating($rating);

?>
booga
18-Jan-2004 09:48
a simple way of using imagerectangle to create a percentage bar

<?php
//this needs to reside in its own php page
//you can include that php page in your html as you would an image:
//<IMG SRC="ratingpng.php?rating=25.2" border="0">

function drawRating($rating) {
  
$image = imagecreate(102,10);
  
$back = ImageColorAllocate($image,255,255,255);
  
$border = ImageColorAllocate($image,0,0,0);
  
$red = ImageColorAllocate($image,255,60,75);
  
$fill = ImageColorAllocate($image,44,81,150);
  
ImageFilledRectangle($image,0,0,101,9,$back);
  
ImageFilledRectangle($image,1,1,$rating,9,$fill);
  
ImageRectangle($image,0,0,101,9,$border);
  
imagePNG($image);
  
imagedestroy($image);
}

Header("Content-type: image/png");
drawRating($rating);

?>
ivank at 2xtreme dot net
31-Mar-2002 08:34
As stated above, it needs to go from the top left corner to the bottom right corner. Just use this to flip it if neccessary:

// flip them if neccessary (x3, y3 are temp vars)
if($x1 > $x2) { $x3 = $x2; $x2 = $x1; $x1 = $x3; }
if($y1 > $y2) { $y3 = $y2; $y2 = $y1; $y1 = $y3; }
ImageFilledRectangle($im, $x1, $y1, $x2, $y2, $color);
saramg at uclink dot berkeley dot edu
30-Nov-2001 11:42
Important quirk to note:

While imagerectangle will allow you to use a different order of your coordinates (such as bottom-left to upper-right), imagefilledrectangle will only work correctly if you use top-left to bottom-right as indicated in the docs.