Added old abandoned KDE3 version of koffice

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/koffice@1077364 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 111 insertions, 0 deletions

diff --git a/karbon/render/art_render_pattern.c b/karbon/render/art_render_pattern.c
new file mode 100644
index 00000000..9245402d
--- /dev/null
+++ b/karbon/render/art_render_pattern.c
@@ -0,0 +1,111 @@
+/*
+ * art_render_pattern.c: 
+ *
+ * Libart_LGPL - library of basic graphic primitives
+ * Copyright (C) 2000 Raph Levien
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "art_render_pattern.h"
+
+#include <math.h>
+
+typedef struct _ArtImageSourcePattern ArtImageSourcePattern;
+
+struct _ArtImageSourcePattern {
+  ArtImageSource super;
+  const ArtPattern *pattern;
+};
+
+static void
+art_render_pattern_done (ArtRenderCallback *self, ArtRender *render)
+{
+  art_free (self);
+}
+
+static void
+art_render_pattern_render (ArtRenderCallback *self, ArtRender *render,
+				   art_u8 *dest, int y)
+{
+  ArtImageSourcePattern *z = (ArtImageSourcePattern *)self;
+  const ArtPattern *pattern = z->pattern;
+  int pixstride = (render->n_chan + 1) * (render->depth >> 3);
+  int n_ch = render->n_chan + 1;
+  int x, j, index;
+  int width = render->x1 - render->x0;
+  int twidth = pattern->twidth;
+  int theight = pattern->theight;
+  art_u8 *bufp = render->image_buf;
+
+  double angle = pattern->angle;
+  double opacity = pattern->opacity;
+  double cosangle = cos(angle);
+  double sinangle = sin(angle);
+
+  y = y - render->y0;
+
+ if(theight == 0) return;
+
+  for (x = 0; x < width; x++)
+  {
+	  int x0 = sinangle * y + cosangle * x;
+	  int y0 = -sinangle * x + cosangle * y;
+	  x0 = (x0 % twidth);
+	  if(x0 < 0) x0 += twidth;
+	  y0 = (y0 % theight);
+	  if(y0 < 0) y0 += theight;
+	  index = (((y0 * twidth + x0) * pixstride) % (twidth * theight * 4));
+	  /*for (j = 0; j < n_ch - 1; j++)
+		{*/
+	      /* bgra -> rgba */
+          bufp[0] = pattern->buffer[index + 2];
+          bufp[1] = pattern->buffer[index + 1];
+          bufp[2] = pattern->buffer[index + 0];
+          bufp[3] = opacity;
+		/*}*/
+      bufp += pixstride;
+  }
+}
+
+static void
+art_render_pattern_negotiate (ArtImageSource *self, ArtRender *render,
+				      ArtImageSourceFlags *p_flags,
+				      int *p_buf_depth, ArtAlphaType *p_alpha)
+{
+  self->super.render = art_render_pattern_render;
+  *p_flags = 0;
+  *p_buf_depth = render->depth;
+  *p_alpha = ART_ALPHA_SEPARATE;
+}
+
+void
+art_render_pattern (ArtRender *render,
+			    const ArtPattern *pattern,
+			    ArtFilterLevel level)
+{
+  ArtImageSourcePattern *image_source = art_new (ArtImageSourcePattern, 1);
+
+  image_source->super.super.render = NULL;
+  image_source->super.super.done = art_render_pattern_done;
+  image_source->super.negotiate = art_render_pattern_negotiate;
+
+  image_source->pattern = pattern;
+
+  art_render_add_image_source (render, &image_source->super);
+}