Re: embedding bitmap images into code

[Igor Gorbounov <igorbounov topazelectro ru>]

 06.10.2010 11:29, Guillaume Brocker пишет:
> Hello !
>
> XPM images [1] may be a solution. In this format, an image is stored 
> as a char array defined in a C header file. You will just need to 
> include that file to get the image embedded in your code.
>
> The problem is that cairo does not provide a way to handle XPM data. 
> You can use Gdk::Pixbuf [2] to load XPM data and then 
> Gdk::Cairo::set_source_pixbuf [3].
Thanks for your answer!
It looks like I've solved this problem at last:

I've taken a C-structure with data, made by Gimp (save as C-code), it 
looks like this:

/* GIMP RGBA C-Source image dump (stock_form-time-field.c) */

static const struct {
  guint       width;
  guint       height;
  guint       bytes_per_pixel; /* 3:RGB, 4:RGBA */
  guint8      pixel_data[24 * 24 * 4 + 1];
} gimp_image = {
  24, 24, 4,
  
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\23\0\0\0o" 
...
This was made from a PNG picture (24x24 pixels). Then I've placed
this image in my drawingarea this way:

int stride = 
Cairo::ImageSurface::format_stride_for_width(Cairo::FORMAT_ARGB32, 
gimp_image.width);
    Cairo::RefPtr<Cairo::ImageSurface> test_image =
        Cairo::ImageSurface::create((uint8_t *)&gimp_image.pixel_data,
                Cairo::FORMAT_ARGB32, gimp_image.width, 
gimp_image.height, stride);
    context->set_source(test_image, 50, 50);
    context->paint();


And it works!!!

Igor Gorbounov