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(PHP 3, PHP 4 ) ImageFilledRectangle -- Zeichnet ein gefülltes Rechteck Beschreibung:int imagefilledrectangle (int im, int x1, int y1, int x2, int y2, int col)
ImageFilledRectangle() erzeugt ein mit der
Farbe col() gefülltes Rechteck innerhalb des
Bildes im. Die obere linke Eck-Koordinate
wird mittels x1 und
y1, die untere rechte Eck-Koordinate
mittels x2 und y2
definiert. 0, 0 ist dabei die linke obere Ecke des Bildes
im.
User Contributed Notes
ImageFilledRectangle
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domih@firstworld.net
06-Jul-2000 02:50 |
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The following example creates a clickable color and gray palettes.
Note: you must have a pngs directory at the document root level.
<script language="JavaScript">
var coRed=127;coGreen=127;coBlue=255; // Original color
var Hex=new Array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F");
function rgb2hex(cRed,cGreen,cBlue){
cColor=Hex[Math.floor(cRed/16)]+Hex[cRed%16]+Hex[Math.floor(cGreen/16)]+Hex[cGreen%16]+Hex[Math.floor(cBlue/16)]+Hex[cBlue%16];
return cColor;
}
function ShowColor(cColor){
with (document){
// Do whatever you have to do here
}
};
function plttClick(cRed,cGreen,cBlue){
// Change the color
coRed=cRed;
coGreen=cGreen;
coBlue=cBlue;
// Replace the following line with your own code
alert(cRed+','+cGreen+','+cBlue)
}
function plttOver(cRed,cGreen,cBlue){
ShowColor(rgb2hex(cRed,cGreen,cBlue));
// Add you own code here
self.status='Red: '+cRed+' / Green: '+cGreen+' / Blue: '+cBlue;
}
function plttOut(){
// Restore original color
ShowColor(rgb2hex(coRed,coGreen,coBlue));
// Add you own code here
self.status='Click on the color of your choice';
}
</script>
<?php
// -- Color Palette -
$arColors[]=0; // 0x00
$arColors[]=51; // 0x33
$arColors[]=102; // 0x66
$arColors[]=153; // 0x99
$arColors[]=204; // 0xCC
$arColors[]=255; // 0xFF
$plttSize=Count($arColors);
$cellWidth=12;
$pic=ImageCreate($plttSize*$plttSize*($cellWidth+1),$plttSize*($cellWidth+1));
ImageFilledRectangle($pic,0,0,$plttSize*$plttSize*($cellWidth+1),$plttSize*($cellWidth+1),ImageColorAllocate($pic,255,255,255));
$cTop=0;
print("<map name=\"color-pltt\">\n");
for($cRed=0;$cRed<$plttSize;$cRed++){
$cLeft=0;
for($cGreen=0;$cGreen<$plttSize;$cGreen++){
for($cBlue=0;$cBlue<$plttSize;$cBlue++){
ImageFilledRectangle($pic,$cLeft,$cTop,$cLeft+$cellWidth-1,$cTop+$cellWidth-1,ImageColorAllocate($pic,$arColors[$cRed],$arColors[$cGreen],$arColors[$cBlue]));
print("<area shape=\"rect\" coords=\"".$cLeft.",".$cTop.",".($cLeft+$cellWidth-1).",".($cTop+$cellWidth-1)."\" href=/old?u=http%3A%2F%2Fwww.php.net%2Fmanual%2Fde%2F%5C%26quot%3Bjavascript%3AplttClick%28%26quot%3B.%24arColors%5B%24cRed%5D.%26quot%3B%2C%26quot%3B.%24arColors%5B%24cGreen%5D.%26quot%3B%2C%26quot%3B.%24arColors%5B%24cBlue%5D.%26quot%3B%29%5C%26quot%3B&y=1999 onMouseOver=\"plttOver(".$arColors[$cRed].",".$arColors[$cGreen].",".$arColors[$cBlue].");return true;\" onMouseOut=\"plttOut();return true;\" />\n");
$cLeft=$cLeft+$cellWidth+1;
}
}
$cTop=$cTop+$cellWidth+1;
}
print("</map>\n");
ImagePNG($pic,"./pngs/color-pltt.png");
ImageDestroy($pic);
// -- Gray Palette -
$plttSize=32; // Must be a divider of 256
$cellWidth=12; // Must be >0
$pic=ImageCreate(($plttSize+1)*($cellWidth+1),$cellWidth+1);
ImageFilledRectangle($pic,0,0,$plttSize*($cellWidth+1),$cellWidth+1,ImageColorAllocate($pic,255,255,255));
$incRGB=floor(256/$plttSize);
$cLeft=0;
$cTop=0;
print("<map name=\"gray-pltt\">\n");
for($cGray=0;$cGray<($plttSize+1);$cGray++){
if($cGray==0){
$grayRGB=0;
} else {
$grayRGB=($cGray*$incRGB)-1;
}
ImageFilledRectangle($pic,$cLeft,$cTop,$cLeft+$cellWidth-1,$cTop+$cellWidth-1,ImageColorAllocate($pic,$grayRGB,$grayRGB,$grayRGB));
print("<area shape=\"rect\" coords=\"".$cLeft.",".$cTop.",".($cLeft+$cellWidth-1).",".($cTop+$cellWidth-1)."\" href=/old?u=http%3A%2F%2Fwww.php.net%2Fmanual%2Fde%2F%5C%26quot%3Bjavascript%3AplttClick%28%26quot%3B.%24grayRGB.%26quot%3B%2C%26quot%3B.%24grayRGB.%26quot%3B%2C%26quot%3B.%24grayRGB.%26quot%3B%29%5C%26quot%3B&y=1999 onMouseOver=\"plttOver(".$grayRGB.",".$grayRGB.",".$grayRGB.");return true;\" onMouseOut=\"plttOut();return true;\" />\n");
$cLeft=$cLeft+$cellWidth+1;
}
print("</map>\n");
ImagePNG($pic,"./pngs/gray-pltt.png");
ImageDestroy($pic);
?>
Color Palette
<img src=/old?u=http%3A%2F%2Fwww.php.net%2Fmanual%2Fde%2F%26quot%3B.%2Fpngs%2Fcolor-pltt.png%26quot&y=1999 usemap="#color-pltt" border="0" />
Gray Palette
<img src=/old?u=http%3A%2F%2Fwww.php.net%2Fmanual%2Fde%2F%26quot%3B.%2Fpngs%2Fgray-pltt.png%26quot&y=1999 usemap="#gray-pltt" border="0" />
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ImageFilledPolygon