How to set font color for caption image?

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kaynes
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How to set font color for caption image?

Post by kaynes » 2014-02-18T15:28:38-07:00

I'm trying too generate one image with caption:

//Command line
convert composite.png -gravity south -size 70x -font Montserrat-Bold.tff -pointsize 8 -fill "#cecece" -background transparent caption:"My amazing caption" -composite result.png

This work fine!

And my code representation is:

Code: Select all

    MagickWand *mwc = NULL;
    DrawingWand *dw = NULL;
    PixelWand *pw = NULL;

    mwc = NewMagickWand();
    dw = NewDrawingWand();
    pw = NewPixelWand();

    MagickSetGravity(mwc, SouthGravity);
    MagickSetSize(mwc, 70,20);
    MagickSetFont(mwc, "Montserrat-Bold.ttf");
    MagickSetPointsize(mwc, 8);
    PixelSetColor(pw, "#cecece");
    //I can set the Background color but what about the font color?
    PixelSetColor(pw, "transparent");
    MagickSetBackgroundColor(mwc, pw);
    MagickReadImage(mwc, "caption: My amazing caption");

    MagickWriteImage(mwc, "final.png");
Anyone knows to "fill" the color for the font?

Flocke
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Re: How to set font color for caption image?

Post by Flocke » 2014-02-21T07:13:04-07:00

What do you mean by "fill"?

If you are trying to get a text on an image I would use the MagickAnnotateImage function like this:
1. read your image into the MagickWand magick_wand then just do something like this

Code: Select all

        double angle, x,y: //position of the capture and angle of the capture
	p_wand = NewPixelWand();
	d_wand = NewDrawingWand();


	angle = 0;
        x = 100;
        y = 100;

        PixelSetColor(p_wand,"red");
        DrawSetFillColor(d_wand,p_wand);
        
        MagickAnnotateImage(magick_wand,d_wand,x,y,angle,"Bingo");

This will write the word "Bingo" in the color red at 100,100 pixels from the upper left corner of your image...

Is this what you want?

greetings,
Flocke

edit:
If you want you can make the font bigger with
DrawSetFontSize(d_wand, x);

x = size of the font. 30 is still

iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-27T14:16:25-07:00

Sorry for bumping old thread, but i have same problem.
Example:

Code: Select all

#include <stdio.h>
#include <string.h>

#include <wand/magick_wand.h>

int main(void)
{
  MagickWandGenesis();

  MagickWand* m_wand = NewMagickWand();

  MagickSetSize(m_wand, 100, 100);
  MagickSetPointsize(m_wand, 31);

  if (MagickReadImage(m_wand, "caption:hello world") != MagickTrue)
  {
    ExceptionType severity;
    printf("error: %s\n",MagickGetException(m_wand, &severity));
  }

  MagickWriteImage(m_wand, "test.jpg");
}

I can set background color by using MagickSetBackgroundColor before loading pseudo-image. But how do i set text color?
I'm using pseuso-image because of "caption:" ability to auto-split text based on image width, and don't really want to deal with MagickQueryFontMetrics and manual splitting

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fmw42
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Re: How to set font color for caption image?

Post by fmw42 » 2016-10-27T15:37:28-07:00

look for something like fill, (stroke or strokecolor) - just a guess since that is how it is done in command line

iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-27T15:41:45-07:00

On the command line it's done via -fill, according to docs. Yet, none of *Fill* methods seems to work.
I've tried setting stroke color too, but to no avail


iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-27T15:56:50-07:00

Yep, that's the first thing i've tried

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fmw42
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Re: How to set font color for caption image?

Post by fmw42 » 2016-10-27T17:42:28-07:00

What is your IM version? If old, perhaps you should update it. There may have been a bug in an old version.

iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-28T00:34:25-07:00

6.9.2.7
I'm not seeing anything related in the changelog, though

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fmw42
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Re: How to set font color for caption image?

Post by fmw42 » 2016-10-28T00:35:46-07:00


iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-28T00:45:07-07:00

Yep, that's the one i've checked.

iSage
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Re: How to set font color for caption image?

Post by iSage » 2016-10-28T01:15:16-07:00

Digging deeper: it looks like "caption:" gets info about colors, etc. from Image -> ImageInfo, but wand methods operate on DrawingWand, which in case of Annotate you just pass along, but in case of "caption:" i don't really know what to do

kenedy
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Re: How to set font color for caption image?

Post by kenedy » 2016-12-20T20:56:49-07:00

I am facing the same problem.anyone has an idea or solution for that?
Graduated from Soran University with First Class Degree with Honours in Computer Science.

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