combining color in a text

[skyjan]

how do i combine color in a text?

something like this

This is my text


currently what i have right now is this
$draw = new ImagickDraw();
$im = new Imagick("thisistheimagefile.jpg" );
$draw->setFont( "Fonts/arial.ttf" );
$draw->setFontSize(12 );
$draw->setGravity( Imagick:: GRAVITY_WEST );


$draw->setFillColor(new ImagickPixel("#40FF80r"));
$im->annotateImage( $draw, 0, 0, 0, "this" );
$im->drawImage($draw);
$draw->setFillColor(new ImagickPixel("#8040BF"));
$im->annotateImage( $draw, 0, 0, 0, "is " );
$im->drawImage($draw);
$draw->setFillColor(new ImagickPixel("#BF00BF"));
$im->annotateImage( $draw, 0, 0, 0, "my text" );
$im->drawImage($draw);


im a little bit lost on what to do , im assuming computing the x coordinate or y coordinate "annotateImage", but its too complicated, since the text entry is a user entry (it has WYSWYG)

TIA

[el_supremo]

You need to get the font metrics for each string and accumulate that in the x coordinate for the next annotate.
I don't know how to do this in IMagick but in C it looks like this:
First get the metrics of a space:

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	// Get the FontMetrics of a space
	fm = MagickQueryFontMetrics(mw, dw, " ");
	sx = (int)fm[4];
	if(fm)RelinquishMagickMemory(fm);

The font metrics are returned as an array of 13 double floating point values and fm[4] will be the width of the space. Each time you call font metrics it returns a new array so you have to deallocate it once you're done with it.

Drawing the first string:

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	dx = 10;
	dy = 10;
	MagickAnnotateImage(mw, dw, dx, dy, 0, "this" );
	MagickDrawImage(mw,dw);
	// get the font metrics
	fm = MagickQueryFontMetrics(mw, dw, "this");
	dx += (int)fm[4]+sx;
	if(fm)RelinquishMagickMemory(fm);

Once "this" has been drawn, the dx coordinate is increased by the width of "this" plus the width of a space.

Then the next one:

Code: Select all

	PixelSetColor(pw,"#8040BF");
	DrawSetFillColor(dw,pw);
	MagickAnnotateImage(mw, dw, dx, dy, 0, "is" );
	MagickDrawImage(mw,dw);
	fm = MagickQueryFontMetrics(mw, dw, "is");
	dx += (int)fm[4]+sx;
	if(fm)RelinquishMagickMemory(fm);

and so on.

Pete