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Diffstat (limited to 'gdk-pixbuf/gdk-pixbuf-core.h')
-rw-r--r-- | gdk-pixbuf/gdk-pixbuf-core.h | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/gdk-pixbuf/gdk-pixbuf-core.h b/gdk-pixbuf/gdk-pixbuf-core.h index b56e7f189..9e6ba6fab 100644 --- a/gdk-pixbuf/gdk-pixbuf-core.h +++ b/gdk-pixbuf/gdk-pixbuf-core.h @@ -37,75 +37,6 @@ G_BEGIN_DECLS /** - * SECTION:gdk-pixbuf - * @Short_description: Information that describes an image. - * @Title: The GdkPixbuf Structure - * - * The #GdkPixbuf structure contains - * information that describes an image in memory. - * - * ## Image Data ## {#image-data} - * - * Image data in a pixbuf is stored in memory in uncompressed, - * packed format. Rows in the image are stored top to bottom, and - * in each row pixels are stored from left to right. There may be - * padding at the end of a row. The "rowstride" value of a pixbuf, - * as returned by gdk_pixbuf_get_rowstride(), indicates the number - * of bytes between rows. - * - * ## put_pixel() Example ## {#put-pixel} - * - * The following code illustrates a simple put_pixel() - * function for RGB pixbufs with 8 bits per channel with an alpha - * channel. It is not included in the gdk-pixbuf library for - * performance reasons; rather than making several function calls - * for each pixel, your own code can take shortcuts. - * - * |[<!-- language="C" --> - * static void - * put_pixel (GdkPixbuf *pixbuf, int x, int y, guchar red, guchar green, guchar blue, guchar alpha) - * { - * int width, height, rowstride, n_channels; - * guchar *pixels, *p; - * - * n_channels = gdk_pixbuf_get_n_channels (pixbuf); - * - * g_assert (gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); - * g_assert (gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); - * g_assert (gdk_pixbuf_get_has_alpha (pixbuf)); - * g_assert (n_channels == 4); - * - * width = gdk_pixbuf_get_width (pixbuf); - * height = gdk_pixbuf_get_height (pixbuf); - * - * g_assert (x >= 0 && x < width); - * g_assert (y >= 0 && y < height); - * - * rowstride = gdk_pixbuf_get_rowstride (pixbuf); - * pixels = gdk_pixbuf_get_pixels (pixbuf); - * - * p = pixels + y * rowstride + x * n_channels; - * p[0] = red; - * p[1] = green; - * p[2] = blue; - * p[3] = alpha; - * } - * ]| - * - * This function will not work for pixbufs with images that are - * other than 8 bits per sample or channel, but it will work for - * most of the pixbufs that GTK+ uses. - * - * If you are doing memcpy() of raw pixbuf data, note that the last row - * in the pixbuf may not be as wide as the full rowstride, but rather - * just as wide as the pixel data needs to be. That is, it is unsafe to - * do `memcpy (dest, pixels, rowstride * height)` to copy a whole pixbuf. - * Use gdk_pixbuf_copy() instead, or compute the width in bytes of the - * last row as `width * ((n_channels * bits_per_sample + 7) / 8)`. - */ - - -/** * GdkPixbufAlphaMode: * @GDK_PIXBUF_ALPHA_BILEVEL: A bilevel clipping mask (black and white) * will be created and used to draw the image. Pixels below 0.5 opacity |