mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-29 06:51:10 +00:00
GtkGradient: Handle symbolic gradients.
The css parser has been modified to parse correctly radial gradients:
background-image: -gtk-gradient (radial,
center center, 0,
center center, 0.8,
from (#000), to (#fff));
The theming engine has been modified to correctly animate these,
as well as transitions between different pattern types.
This commit is contained in:
Carlos Garnacho
parent
2e8b1cd358
commit
88a3c2daae
@ -1354,6 +1354,9 @@ gradient_parse_str (const gchar *str,
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gchar **end_ptr)
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{
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GtkGradient *gradient = NULL;
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gdouble coords[6];
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gchar *end;
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guint i;
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if (g_str_has_prefix (str, "-gtk-gradient"))
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{
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@ -1390,15 +1393,67 @@ gradient_parse_str (const gchar *str,
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SKIP_SPACES (str);
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if (type == CAIRO_PATTERN_TYPE_LINEAR)
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/* Parse start/stop position parameters */
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for (i = 0; i < 2; i++)
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{
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gdouble coords[4];
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gchar *end;
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guint i;
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/* Parse start/stop position parameters */
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for (i = 0; i < 2; i++)
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if (*str != ',')
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{
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*end_ptr = (gchar *) str;
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return NULL;
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}
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str++;
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SKIP_SPACES (str);
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if (strncmp (str, "left", 4) == 0)
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{
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coords[i * 3] = 0;
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str += strlen ("left");
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}
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else if (strncmp (str, "right", 5) == 0)
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{
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coords[i * 3] = 1;
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str += strlen ("right");
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}
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else if (strncmp (str, "center", 6) == 0)
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{
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coords[i * 3] = 0.5;
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str += strlen ("center");
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}
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else
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{
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coords[i * 3] = g_ascii_strtod (str, &end);
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str = end;
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}
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SKIP_SPACES (str);
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if (strncmp (str, "top", 3) == 0)
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{
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coords[(i * 3) + 1] = 0;
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str += strlen ("top");
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}
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else if (strncmp (str, "bottom", 6) == 0)
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{
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coords[(i * 3) + 1] = 1;
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str += strlen ("bottom");
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}
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else if (strncmp (str, "center", 6) == 0)
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{
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coords[(i * 3) + 1] = 0.5;
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str += strlen ("center");
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}
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else
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{
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coords[(i * 3) + 1] = g_ascii_strtod (str, &end);
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str = end;
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}
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SKIP_SPACES (str);
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if (type == CAIRO_PATTERN_TYPE_RADIAL)
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{
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/* Parse radius */
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if (*str != ',')
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{
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*end_ptr = (gchar *) str;
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@ -1408,137 +1463,95 @@ gradient_parse_str (const gchar *str,
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str++;
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SKIP_SPACES (str);
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if (g_str_has_prefix (str, "left"))
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{
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coords[i * 2] = 0;
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str += strlen ("left");
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}
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else if (g_str_has_prefix (str, "right"))
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{
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coords[i * 2] = 1;
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str += strlen ("right");
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}
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else
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{
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coords[i * 2] = g_ascii_strtod (str, &end);
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str = end;
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}
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SKIP_SPACES (str);
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if (g_str_has_prefix (str, "top"))
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{
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coords[(i * 2) + 1] = 0;
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str += strlen ("top");
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}
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else if (g_str_has_prefix (str, "bottom"))
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{
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coords[(i * 2) + 1] = 1;
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str += strlen ("bottom");
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}
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else
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{
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coords[(i * 2) + 1] = g_ascii_strtod (str, &end);
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str = end;
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}
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coords[(i * 3) + 2] = g_ascii_strtod (str, &end);
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str = end;
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SKIP_SPACES (str);
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}
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}
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gradient = gtk_gradient_new_linear (coords[0], coords[1], coords[2], coords[3]);
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if (type == CAIRO_PATTERN_TYPE_LINEAR)
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gradient = gtk_gradient_new_linear (coords[0], coords[1], coords[3], coords[4]);
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else
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gradient = gtk_gradient_new_radial (coords[0], coords[1], coords[2],
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coords[3], coords[4], coords[5]);
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while (*str == ',')
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while (*str == ',')
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{
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GtkSymbolicColor *color;
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gdouble position;
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if (*str != ',')
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{
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GtkSymbolicColor *color;
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gdouble position;
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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if (g_str_has_prefix (str, "from"))
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{
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position = 0;
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str += strlen ("from");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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}
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else if (g_str_has_prefix (str, "to"))
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{
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position = 1;
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str += strlen ("to");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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}
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else if (g_str_has_prefix (str, "color-stop"))
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{
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str += strlen ("color-stop");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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position = g_strtod (str, &end);
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str = end;
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SKIP_SPACES (str);
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if (*str != ',')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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if (g_str_has_prefix (str, "from"))
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{
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position = 0;
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str += strlen ("from");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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}
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else if (g_str_has_prefix (str, "to"))
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{
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position = 1;
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str += strlen ("to");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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}
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else if (g_str_has_prefix (str, "color-stop"))
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{
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str += strlen ("color-stop");
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SKIP_SPACES (str);
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if (*str != '(')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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position = g_strtod (str, &end);
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str = end;
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SKIP_SPACES (str);
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if (*str != ',')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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}
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else
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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color = symbolic_color_parse_str (str, &end);
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str = end;
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SKIP_SPACES (str);
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if (*str != ')')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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if (color)
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{
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gtk_gradient_add_color_stop (gradient, position, color);
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gtk_symbolic_color_unref (color);
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}
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}
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else
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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SKIP_SPACES (str);
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color = symbolic_color_parse_str (str, &end);
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str = end;
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SKIP_SPACES (str);
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if (*str != ')')
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{
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@ -1547,7 +1560,22 @@ gradient_parse_str (const gchar *str,
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}
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str++;
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SKIP_SPACES (str);
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if (color)
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{
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gtk_gradient_add_color_stop (gradient, position, color);
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gtk_symbolic_color_unref (color);
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}
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}
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if (*str != ')')
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{
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*end_ptr = (gchar *) str;
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return gradient;
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}
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str++;
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}
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*end_ptr = (gchar *) str;
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@ -2328,8 +2356,6 @@ gtk_css_provider_load_from_path (GtkCssProvider *css_provider,
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const gchar *path,
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GError **error)
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{
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GtkCssProviderPrivate *priv;
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g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
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g_return_val_if_fail (path != NULL, FALSE);
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@ -74,6 +74,8 @@ struct GtkGradient
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gdouble y0;
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gdouble x1;
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gdouble y1;
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gdouble radius0;
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gdouble radius1;
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GArray *stops;
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@ -269,6 +271,33 @@ gtk_gradient_new_linear (gdouble x0,
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gradient->y0 = y0;
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gradient->x1 = x1;
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gradient->y1 = y1;
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gradient->radius0 = 0;
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gradient->radius1 = 0;
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gradient->ref_count = 1;
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return gradient;
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}
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GtkGradient *
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gtk_gradient_new_radial (gdouble x0,
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gdouble y0,
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gdouble radius0,
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gdouble x1,
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gdouble y1,
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gdouble radius1)
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{
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GtkGradient *gradient;
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gradient = g_slice_new (GtkGradient);
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gradient->stops = g_array_new (FALSE, FALSE, sizeof (ColorStop));
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gradient->x0 = x0;
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gradient->y0 = y0;
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gradient->x1 = x1;
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gradient->y1 = y1;
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gradient->radius0 = radius0;
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gradient->radius1 = radius1;
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gradient->ref_count = 1;
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@ -336,8 +365,14 @@ gtk_gradient_resolve (GtkGradient *gradient,
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g_return_val_if_fail (GTK_IS_STYLE_SET (style_set), FALSE);
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g_return_val_if_fail (resolved_gradient != NULL, FALSE);
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pattern = cairo_pattern_create_linear (gradient->x0, gradient->y0,
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gradient->x1, gradient->y1);
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if (gradient->radius0 == 0 && gradient->radius1 == 0)
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pattern = cairo_pattern_create_linear (gradient->x0, gradient->y0,
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gradient->x1, gradient->y1);
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else
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pattern = cairo_pattern_create_radial (gradient->x0, gradient->y0,
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gradient->radius0,
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gradient->x1, gradient->y1,
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gradient->radius1);
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for (i = 0; i < gradient->stops->len; i++)
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{
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@ -49,6 +49,12 @@ GtkGradient * gtk_gradient_new_linear (gdouble x0,
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gdouble y0,
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gdouble x1,
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gdouble y1);
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GtkGradient * gtk_gradient_new_radial (gdouble x0,
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gdouble y0,
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gdouble radius0,
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gdouble x1,
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gdouble y1,
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gdouble radius1);
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void gtk_gradient_add_color_stop (GtkGradient *gradient,
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gdouble offset,
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@ -632,8 +632,6 @@ gtk_theming_engine_render_option (GtkThemingEngine *engine,
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gint exterior_size, interior_size, pad, thickness;
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gdouble radius;
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/* FIXME: set clipping */
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flags = gtk_theming_engine_get_state (engine);
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path = gtk_theming_engine_get_path (engine);
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radius = MIN (width, height) / 2 - 0.5;
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@ -897,7 +895,7 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
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cairo_pattern_t *pattern;
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GtkStateFlags flags;
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gboolean prelight;
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gdouble progress;
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gdouble progress, alpha = 1;
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flags = gtk_theming_engine_get_state (engine);
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cairo_save (cr);
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@ -919,6 +917,9 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
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prelight = gtk_theming_engine_is_state_set (engine, GTK_STATE_PRELIGHT, &progress);
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cairo_translate (cr, x, y);
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cairo_scale (cr, width, height);
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if (prelight || progress > 0 )
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{
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cairo_pattern_t *other_pattern;
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@ -942,53 +943,89 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
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if (pattern && other_pattern)
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{
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gdouble offset0, red0, green0, blue0, alpha0;
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gdouble offset1, red1, green1, blue1, alpha1;
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gdouble x00, x01, y00, y01, x10, x11, y10, y11;
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cairo_pattern_type_t type, other_type;
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gint n0, n1;
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guint i;
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cairo_pattern_get_linear_points (pattern, &x00, &y00, &x01, &y01);
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cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11);
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new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress,
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y00 + (y10 - y00) * progress,
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x01 + (x11 - x01) * progress,
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y01 + (y11 - y01) * progress);
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cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST);
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cairo_pattern_get_color_stop_count (pattern, &n0);
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cairo_pattern_get_color_stop_count (other_pattern, &n1);
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i = 0;
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type = cairo_pattern_get_type (pattern);
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other_type = cairo_pattern_get_type (other_pattern);
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/* Blend both gradients into one */
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while (i < n0 && i < n1)
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if (type == other_type && n0 == n1)
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{
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cairo_pattern_get_color_stop_rgba (pattern, i,
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&offset0,
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&red0, &green0, &blue0,
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&alpha0);
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cairo_pattern_get_color_stop_rgba (other_pattern, i,
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&offset1,
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&red1, &green1, &blue1,
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&alpha1);
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gdouble offset0, red0, green0, blue0, alpha0;
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gdouble offset1, red1, green1, blue1, alpha1;
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gdouble x00, x01, y00, y01, x10, x11, y10, y11;
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gdouble r00, r01, r10, r11;
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guint i;
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cairo_pattern_add_color_stop_rgba (new_pattern,
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offset0 + ((offset1 - offset0) * progress),
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red0 + ((red1 - red0) * progress),
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green0 + ((green1 - green0) * progress),
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blue0 + ((blue1 - blue0) * progress),
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alpha0 + ((alpha1 - alpha0) * progress));
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i++;
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if (type == CAIRO_PATTERN_TYPE_LINEAR)
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{
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cairo_pattern_get_linear_points (pattern, &x00, &y00, &x01, &y01);
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cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11);
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new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress,
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y00 + (y10 - y00) * progress,
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x01 + (x11 - x01) * progress,
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y01 + (y11 - y01) * progress);
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}
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else
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{
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cairo_pattern_get_radial_circles (pattern, &x00, &y00, &r00, &x01, &y01, &r01);
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cairo_pattern_get_radial_circles (other_pattern, &x10, &y10, &r10, &x11, &y11, &r11);
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new_pattern = cairo_pattern_create_radial (x00 + (x10 - x00) * progress,
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||||
y00 + (y10 - y00) * progress,
|
||||
r00 + (r10 - r00) * progress,
|
||||
x01 + (x11 - x01) * progress,
|
||||
y01 + (y11 - y01) * progress,
|
||||
r01 + (r11 - r01) * progress);
|
||||
}
|
||||
|
||||
cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST);
|
||||
i = 0;
|
||||
|
||||
/* Blend both gradients into one */
|
||||
while (i < n0 && i < n1)
|
||||
{
|
||||
cairo_pattern_get_color_stop_rgba (pattern, i,
|
||||
&offset0,
|
||||
&red0, &green0, &blue0,
|
||||
&alpha0);
|
||||
cairo_pattern_get_color_stop_rgba (other_pattern, i,
|
||||
&offset1,
|
||||
&red1, &green1, &blue1,
|
||||
&alpha1);
|
||||
|
||||
cairo_pattern_add_color_stop_rgba (new_pattern,
|
||||
offset0 + ((offset1 - offset0) * progress),
|
||||
red0 + ((red1 - red0) * progress),
|
||||
green0 + ((green1 - green0) * progress),
|
||||
blue0 + ((blue1 - blue0) * progress),
|
||||
alpha0 + ((alpha1 - alpha0) * progress));
|
||||
i++;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Different pattern types, or different color
|
||||
* stop counts, alpha blend both patterns.
|
||||
*/
|
||||
cairo_rectangle (cr, 0, 0, 1, 1);
|
||||
cairo_set_source (cr, other_pattern);
|
||||
cairo_fill (cr);
|
||||
|
||||
/* FIXME: Handle remaining color stops in both source patterns */
|
||||
/* Set alpha for posterior drawing
|
||||
* of the target pattern
|
||||
*/
|
||||
alpha = 1 - progress;
|
||||
}
|
||||
}
|
||||
else if (pattern || other_pattern)
|
||||
{
|
||||
cairo_pattern_t *p;
|
||||
GdkColor *c;
|
||||
gdouble x0, y0, x1, y1;
|
||||
gdouble x0, y0, x1, y1, r0, r1;
|
||||
gdouble red0, green0, blue0;
|
||||
gdouble red1, green1, blue1;
|
||||
gint n, i;
|
||||
@ -1006,8 +1043,17 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
|
||||
c = gtk_theming_engine_has_class (engine, "entry") ? base_color : bg_color;
|
||||
}
|
||||
|
||||
cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1);
|
||||
new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1);
|
||||
if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR)
|
||||
{
|
||||
cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1);
|
||||
new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1);
|
||||
}
|
||||
else
|
||||
{
|
||||
cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1);
|
||||
new_pattern = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1);
|
||||
}
|
||||
|
||||
cairo_pattern_get_color_stop_count (p, &n);
|
||||
|
||||
red0 = c->red / 65535.;
|
||||
@ -1067,14 +1113,11 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
|
||||
gdk_color_free (other_base);
|
||||
}
|
||||
|
||||
cairo_rectangle (cr, 0, 0, 1, 1);
|
||||
|
||||
if (pattern)
|
||||
{
|
||||
cairo_translate (cr, x, y);
|
||||
cairo_scale (cr, width, height);
|
||||
|
||||
cairo_rectangle (cr, 0, 0, 1, 1);
|
||||
cairo_set_source (cr, pattern);
|
||||
|
||||
cairo_pattern_destroy (pattern);
|
||||
}
|
||||
else
|
||||
@ -1083,8 +1126,6 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
|
||||
gdk_cairo_set_source_color (cr, base_color);
|
||||
else
|
||||
gdk_cairo_set_source_color (cr, bg_color);
|
||||
|
||||
cairo_rectangle (cr, x, y, width, height);
|
||||
}
|
||||
|
||||
if (gtk_theming_engine_has_class (engine, "tooltip"))
|
||||
@ -1095,7 +1136,18 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine,
|
||||
cairo_stroke (cr);
|
||||
}
|
||||
else
|
||||
cairo_fill (cr);
|
||||
{
|
||||
if (alpha == 1)
|
||||
cairo_fill (cr);
|
||||
else
|
||||
{
|
||||
cairo_pattern_t *mask;
|
||||
|
||||
mask = cairo_pattern_create_rgba (1, 1, 1, alpha);
|
||||
cairo_mask (cr, mask);
|
||||
cairo_pattern_destroy (mask);
|
||||
}
|
||||
}
|
||||
|
||||
cairo_restore (cr);
|
||||
|
||||
@ -1544,8 +1596,6 @@ gtk_theming_engine_render_layout (GtkThemingEngine *engine,
|
||||
cairo_save (cr);
|
||||
flags = gtk_theming_engine_get_state (engine);
|
||||
|
||||
/* FIXME: Set clipping */
|
||||
|
||||
gtk_theming_engine_get (engine, flags,
|
||||
"foreground-color", &fg_color,
|
||||
NULL);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user