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Add support for "colorize" image attribute.
2002-02-07 Anders Carlsson <andersca@gnu.org> * src/theme-parser.c: (parse_draw_op_element): Add support for "colorize" image attribute. * src/theme.c: (colorize_pixbuf): New function that colorizes a pixbuf. (pos_tokenize): Allow "\n" as a whitespace character. (meta_draw_op_free): Free colorize_spec; (draw_op_as_pixbuf): Colorize image if needed. * src/theme.h: Add colorize_spec to struct.
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ChangeLog
16
ChangeLog
@ -1,3 +1,19 @@
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2002-02-07 Anders Carlsson <andersca@gnu.org>
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* src/theme-parser.c: (parse_draw_op_element):
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Add support for "colorize" image attribute.
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* src/theme.c: (colorize_pixbuf):
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New function that colorizes a pixbuf.
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(pos_tokenize): Allow "\n" as a whitespace character.
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(meta_draw_op_free): Free colorize_spec;
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(draw_op_as_pixbuf): Colorize image if needed.
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* src/theme.h: Add colorize_spec to struct.
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2002-02-07 Anders Carlsson <andersca@gnu.org>
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* src/themes/Crux/metacity-theme-1.xml: Add maximized and
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@ -1991,14 +1991,17 @@ parse_draw_op_element (GMarkupParseContext *context,
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const char *width;
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const char *height;
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const char *alpha;
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const char *colorize;
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double alpha_val;
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GdkPixbuf *pixbuf;
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MetaColorSpec *colorize_spec = NULL;
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if (!locate_attributes (context, element_name, attribute_names, attribute_values,
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error,
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"x", &x, "y", &y,
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"width", &width, "height", &height,
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"alpha", &alpha, "filename", &filename,
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"colorize", &colorize,
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NULL))
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return;
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@ -2063,10 +2066,22 @@ parse_draw_op_element (GMarkupParseContext *context,
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add_context_to_error (error, context);
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return;
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}
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if (colorize)
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{
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colorize_spec = meta_color_spec_new_from_string (colorize, error);
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if (colorize == NULL)
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{
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add_context_to_error (error, context);
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return;
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}
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}
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op = meta_draw_op_new (META_DRAW_IMAGE);
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op->data.image.pixbuf = pixbuf;
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op->data.image.colorize_spec = colorize_spec;
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op->data.image.x = optimize_expression (info->theme, x);
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op->data.image.y = optimize_expression (info->theme, y);
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op->data.image.width = optimize_expression (info->theme, width);
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75
src/theme.c
75
src/theme.c
@ -42,6 +42,48 @@
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#define ALPHA_TO_UCHAR(d) ((unsigned char) ((d) * 255))
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#define DEBUG_FILL_STRUCT(s) memset ((s), 0xef, sizeof (*(s)))
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#define INTENSITY(r, g, b) (r * 0.30 + g * 0.59 + b * 0.11)
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static GdkPixbuf *
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colorize_pixbuf (GdkPixbuf *orig, GdkColor *new_color)
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{
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GdkPixbuf *pixbuf;
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double intensity;
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int x, y;
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guchar r, g, b;
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guchar *src, *dest;
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r = new_color->red / 256;
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g = new_color->green / 256;
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b = new_color->blue / 256;
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pixbuf = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (orig), gdk_pixbuf_get_has_alpha (orig),
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gdk_pixbuf_get_bits_per_sample (orig),
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gdk_pixbuf_get_width (orig), gdk_pixbuf_get_height (orig));
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for (y = 0; y < gdk_pixbuf_get_height (pixbuf); y++)
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{
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src = gdk_pixbuf_get_pixels (orig) + y * gdk_pixbuf_get_rowstride (orig);
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dest = gdk_pixbuf_get_pixels (pixbuf) + y * gdk_pixbuf_get_rowstride (pixbuf);
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for (x = 0; x < gdk_pixbuf_get_width (pixbuf); x++) {
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intensity = INTENSITY (src[0], src[1], src[2]) / 255.0;
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dest[0] = (guchar)(r * intensity);
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dest[1] = g * intensity;
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dest[2] = b * intensity;
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if (gdk_pixbuf_get_has_alpha (orig))
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dest[3] = src[3];
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src += gdk_pixbuf_get_has_alpha (orig) ? 4 : 3;
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dest += gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3;
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}
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}
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return pixbuf;
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}
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static void
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color_composite (const GdkColor *bg,
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@ -1088,6 +1130,7 @@ pos_tokenize (const char *expr,
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case ' ':
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case '\t':
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case '\n':
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break;
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default:
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@ -2106,6 +2149,8 @@ meta_draw_op_free (MetaDrawOp *op)
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case META_DRAW_IMAGE:
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if (op->data.image.pixbuf)
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g_object_unref (G_OBJECT (op->data.image.pixbuf));
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if (op->data.image.colorize_spec)
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meta_color_spec_free (op->data.image.colorize_spec);
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g_free (op->data.image.x);
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g_free (op->data.image.y);
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g_free (op->data.image.width);
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@ -2395,15 +2440,33 @@ draw_op_as_pixbuf (const MetaDrawOp *op,
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}
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break;
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case META_DRAW_IMAGE:
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{
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pixbuf = scale_and_alpha_pixbuf (op->data.image.pixbuf,
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op->data.image.alpha,
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width, height);
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}
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if (op->data.image.colorize_spec)
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{
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GdkPixbuf *tmp_pixbuf;
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GdkColor color;
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meta_color_spec_render (op->data.image.colorize_spec,
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widget, &color);
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tmp_pixbuf = colorize_pixbuf (op->data.image.pixbuf,
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&color);
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pixbuf = scale_and_alpha_pixbuf (tmp_pixbuf,
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op->data.image.alpha,
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width, height);
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g_object_unref (tmp_pixbuf);
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}
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else
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{
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pixbuf = scale_and_alpha_pixbuf (op->data.image.pixbuf,
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op->data.image.alpha,
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width, height);
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}
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break;
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}
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case META_DRAW_GTK_ARROW:
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case META_DRAW_GTK_BOX:
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case META_DRAW_GTK_VLINE:
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@ -253,6 +253,7 @@ struct _MetaDrawOp
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} gradient;
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struct {
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MetaColorSpec *colorize_spec;
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GdkPixbuf *pixbuf;
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double alpha;
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char *x;
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