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path: root/backend/dvi/dvi-document.c
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-rw-r--r--backend/dvi/dvi-document.c113
1 files changed, 110 insertions, 3 deletions
diff --git a/backend/dvi/dvi-document.c b/backend/dvi/dvi-document.c
index bd69970..9abdca7 100644
--- a/backend/dvi/dvi-document.c
+++ b/backend/dvi/dvi-document.c
@@ -58,6 +58,7 @@ struct _DviDocument
typedef struct _DviDocumentClass DviDocumentClass;
+static void dvi_document_do_color_special (DviContext *dvi, const char *prefix, const char *arg);
static void dvi_document_document_iface_init (EvDocumentIface *iface);
static void dvi_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
static void dvi_document_get_page_size (EvDocument *document,
@@ -206,11 +207,10 @@ dvi_document_finalize (GObject *object)
DviDocument *dvi_document = DVI_DOCUMENT(object);
g_mutex_lock (dvi_context_mutex);
- if (dvi_document->context)
- {
+ if (dvi_document->context) {
mdvi_pixbuf_device_free (&dvi_document->context->device);
mdvi_destroy_context (dvi_document->context);
- }
+ }
g_mutex_unlock (dvi_context_mutex);
if (dvi_document->params)
@@ -230,6 +230,7 @@ dvi_document_class_init (DviDocumentClass *klass)
gobject_class->finalize = dvi_document_finalize;
mdvi_init_kpathsea("evince", MDVI_MFMODE, MDVI_FALLBACK_FONT, MDVI_DPI);
+ mdvi_register_special ("Color", "color", NULL, dvi_document_do_color_special, 1);
mdvi_register_fonts ();
dvi_context_mutex = g_mutex_new ();
@@ -344,6 +345,112 @@ dvi_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
iface->get_dimensions = dvi_document_thumbnails_get_dimensions;
}
+#define RGB2ULONG(r,g,b) ((0xFF<<24)|(r<<16)|(g<<8)|(b))
+
+static gboolean
+hsb2rgb (float h, float s, float v, char *red, char *green, char *blue)
+{
+ float i, f, p, q, t, r, g, b;
+
+ if (h == 360)
+ h = 0;
+ else if ((h > 360) || (h < 0))
+ return FALSE;
+
+ s /= 100;
+ v /= 100;
+ h /= 60;
+ i = floor (h);
+ f = h - i;
+ p = v * (1 - s);
+ q = v * (1 - (s * f));
+ t = v * (1 - (s * (1 - f)));
+
+ if (i == 0) {
+ r = v;
+ g = t;
+ b = p;
+ } else if (i == 1) {
+ r = q;
+ g = v;
+ b = p;
+ } else if (i == 2) {
+ r = p;
+ g = v;
+ b = t;
+ } else if (i == 3) {
+ r = p;
+ g = q;
+ b = v;
+ } else if (i == 4) {
+ r = t;
+ g = p;
+ b = v;
+ } else if (i == 5) {
+ r = v;
+ g = p;
+ b = q;
+ }
+
+ (*red) = (char)floor(r * 255);
+ (*green) = (char)floor(g * 255);
+ (*blue) = (char)floor(b * 255);
+
+ return TRUE;
+}
+
+static void
+dvi_document_do_color_special (DviContext *dvi, const char *prefix, const char *arg)
+{
+ char *op, *color;
+
+ if (strncmp (arg, "pop", 3) == 0) {
+ mdvi_pop_color (dvi);
+ } else if (strncmp (arg, "push", 4) == 0) {
+ /* Find color source : Named, CMYK or RGB */
+ const char *tmp = arg+4;
+ while (isspace (*tmp)) tmp++;
+
+ if (!strncmp ("rgb", tmp, 3)) {
+ float r, g, b;
+ unsigned char red, green, blue;
+ sscanf (tmp+4, "%f %f %f", &r, &g, &b);
+ red = 255*r;
+ green = 255*g;
+ blue = 255*b;
+ mdvi_push_color (dvi, RGB2ULONG (red, green, blue), 0xFFFFFFFF);
+ } else if (!strncmp ("hsb", tmp, 4)) {
+ float h, s, b;
+ char red, green, blue;
+ sscanf (tmp+4, "%f %f %f", &h, &s, &b);
+
+ if (hsb2rgb (h, s, b, &red, &green, &blue))
+ mdvi_push_color (dvi, RGB2ULONG (red, green, blue), 0xFFFFFFFF);
+ } else if (!strncmp ("cmyk", tmp, 4)) {
+ double r, g, b, c, m, y, k;
+
+ sscanf (tmp+5, "%f %f %f %f", &c, &m, &y, &k);
+
+ r = 1.0 - c - k;
+ if (r < 0.0)
+ r = 0.0;
+ g = 1.0 - m - k;
+ if (g < 0.0)
+ g = 0.0;
+ b = 1.0 - y - k;
+ if (b < 0.0)
+ b = 0.0;
+ mdvi_push_color (dvi, RGB2ULONG ((char)(r*255+0.5), (char)(r*255+0.5),
+ (char)(b*255+0.5)), 0xFFFFFFFF);
+ } else {
+ GdkColor color;
+ if (gdk_color_parse (tmp, &color))
+ mdvi_push_color (dvi, RGB2ULONG (color.red*255/65535,
+ color.green*255/65535,
+ color.blue*255/65535), 0xFFFFFFFF);
+ }
+ }
+}
static void
dvi_document_init_params (DviDocument *dvi_document)