diff options
Diffstat (limited to 'src/display/cairo-utils.cpp')
| -rw-r--r-- | src/display/cairo-utils.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/display/cairo-utils.cpp b/src/display/cairo-utils.cpp index 6dd343298..0a1dbd3d6 100644 --- a/src/display/cairo-utils.cpp +++ b/src/display/cairo-utils.cpp @@ -1280,18 +1280,29 @@ int ink_cairo_surface_linear_to_srgb(cairo_surface_t *surface) } cairo_pattern_t * -ink_cairo_pattern_create_checkerboard() +ink_cairo_pattern_create_checkerboard(guint32 rgba) { int const w = 6; int const h = 6; + double r = SP_RGBA32_R_F(rgba); + double g = SP_RGBA32_G_F(rgba); + double b = SP_RGBA32_B_F(rgba); + + float hsl[3]; + SPColor::rgb_to_hsl_floatv(hsl, r, g, b); + hsl[2] += hsl[2] < 0.08 ? 0.08 : -0.08; // 0.08 = 0.77-0.69, the original checkerboard colors. + + float rgb2[3]; + SPColor::hsl_to_rgb_floatv(rgb2, hsl[0], hsl[1], hsl[2]); + cairo_surface_t *s = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 2*w, 2*h); cairo_t *ct = cairo_create(s); cairo_set_operator(ct, CAIRO_OPERATOR_SOURCE); - cairo_set_source_rgb(ct, 0.77, 0.77, 0.77); + cairo_set_source_rgb(ct, r, g, b); cairo_paint(ct); - cairo_set_source_rgb(ct, 0.69, 0.69, 0.69); + cairo_set_source_rgb(ct, rgb2[0], rgb2[1], rgb2[2]); cairo_rectangle(ct, 0, 0, w, h); cairo_rectangle(ct, w, h, w, h); cairo_fill(ct); |