diff options
Diffstat (limited to 'src/display/nr-arena.cpp')
| -rw-r--r-- | src/display/nr-arena.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/display/nr-arena.cpp b/src/display/nr-arena.cpp index 74e0f409c..33870a118 100644 --- a/src/display/nr-arena.cpp +++ b/src/display/nr-arena.cpp @@ -18,6 +18,7 @@ #include "nr-filter-types.h" #include <libnr/nr-blit.h> #include "preferences.h" +#include "color.h" static void nr_arena_class_init (NRArenaClass *klass); static void nr_arena_init (NRArena *arena); @@ -181,6 +182,29 @@ nr_arena_set_renderoffscreen (NRArena *arena) } +#define FLOAT_TO_UINT8(f) (int(f*255)) +#define RGBA_R(v) ((v) >> 24) +#define RGBA_G(v) (((v) >> 16) & 0xff) +#define RGBA_B(v) (((v) >> 8) & 0xff) +#define RGBA_A(v) ((v) & 0xff) + +void nr_arena_separate_color_plates(guint32* rgba){ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + bool render_cyan = prefs->getBool("/options/printcolorspreview/cyan", true); + bool render_magenta = prefs->getBool("/options/printcolorspreview/magenta", true); + bool render_yellow = prefs->getBool("/options/printcolorspreview/yellow", true); + bool render_black = prefs->getBool("/options/printcolorspreview/black", true); + + float rgb_v[3]; + float cmyk_v[4]; + sp_color_rgb_to_cmyk_floatv (cmyk_v, RGBA_R(*rgba)/256.0, RGBA_G(*rgba)/256.0, RGBA_B(*rgba)/256.0); + sp_color_cmyk_to_rgb_floatv (rgb_v, render_cyan ? cmyk_v[0] : 0, + render_magenta ? cmyk_v[1] : 0, + render_yellow ? cmyk_v[2] : 0, + render_black ? cmyk_v[3] : 0); + *rgba = (FLOAT_TO_UINT8(rgb_v[0])<<24) + (FLOAT_TO_UINT8(rgb_v[1])<<16) + (FLOAT_TO_UINT8(rgb_v[2])<<8) + 0xff; +} + /* Local Variables: mode:c++ |