1 files changed, 152 insertions, 0 deletions
diff --git a/src/rxvtimg.h b/src/rxvtimg.h
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+++ b/src/rxvtimg.h
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+/*----------------------------------------------------------------------*
+ * File:	rxvtimg.h
+ *----------------------------------------------------------------------*
+ *
+ * All portions of code are copyright by their respective author/s.
+ * Copyright (c) 2012      Marc Lehmann <schmorp@schmorp.de>
+ * Copyright (c) 2012      Emanuele Giaquinta <e.giaquinta@glauco.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *---------------------------------------------------------------------*/
+
+#ifndef IMG_H
+#define IMG_H
+
+#if HAVE_IMG
+
+#define float_to_component(d) (int32_t)((d) * 65535.99)
+
+#include <X11/extensions/Xrender.h>
+
+struct rxvt_img
+{
+  typedef double nv;
+
+  // *could* also hold the Pixmap itself
+  struct pixref
+  {
+    int cnt;
+    int w, h;
+    bool ours; // false if we don't own the pixmap at all
+
+    pixref (int w, int h)
+    : cnt(1), w(w), h(h), ours(true)
+    {
+    }
+  };
+
+  rxvt_display *d;
+  Pixmap pm;
+  pixref *ref; // shared refcnt
+  int x, y, w, h, repeat;
+  XRenderPictFormat *format;
+
+  rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat = RepeatNormal);
+  rxvt_img (rxvt_display *display, XRenderPictFormat *format, int x, int y, int width, int height, int repeat = RepeatNormal);
+  rxvt_img (const rxvt_img &img);
+  void alloc ();
+
+# if HAVE_PIXBUF
+  static rxvt_img *new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb); // from pixbuf
+  static rxvt_img *new_from_file (rxvt_screen *s, const char *filename); // via pixbuf
+# endif
+  static rxvt_img *new_from_root (rxvt_screen *s); // get root pixmap
+
+  ~rxvt_img ();
+
+  Pixmap steal ()
+  {
+    ref->ours = false;
+    return pm;
+  }
+
+  // inplace
+  void move (int dx, int dy)
+  {
+    x += dx;
+    y += dy;
+  }
+
+  void repeat_mode (int repeat)
+  {
+    this->repeat = repeat;
+  }
+
+  void unshare (); // prepare for write
+  void fill (const rgba &c);
+  void fill (const rgba &c, int x, int y, int w, int h);
+  void add_alpha ();
+  //void linear_gradient  (const XLinearGradient  *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
+  //void radial_gradient  (const XRadialGradient  *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
+  //void conical_gradient (const XConicalGradient *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
+
+  void brightness (int32_t r, int32_t g, int32_t b, int32_t a);
+  void contrast (int32_t r, int32_t g, int32_t b, int32_t a);
+
+  void brightness (nv r, nv g, nv b, nv a = 1.)
+  {
+    brightness (float_to_component (r),
+                float_to_component (g),
+                float_to_component (b),
+                float_to_component (a));
+  }
+
+  void contrast (nv r, nv g, nv b, nv a = 1.)
+  {
+    contrast (float_to_component (r),
+              float_to_component (g),
+              float_to_component (b),
+              float_to_component (a));
+  }
+
+  void draw (rxvt_img *img, int op = PictOpOver, nv mask = 1.);
+#if 0
+  void draw (rxvt_img *img, int op = PictOpOver, nv mask = 1.,
+             nv px, nv py, nv qx, nv qy, nv rx, nv ry, nv sx, nv sy);
+#endif
+
+  // copy
+  rxvt_img *reify (); // make x, y 0, make real width/height
+  rxvt_img *blur (int rh, int rv);
+  rxvt_img *clone ();
+  rxvt_img *sub_rect (int x, int y, int width, int height);
+  rxvt_img *transform (const nv matrix[3][3]);
+  rxvt_img *scale (int new_width, int new_height);
+  rxvt_img *rotate (int cx, int cy, nv phi);
+  rxvt_img *convert_format (XRenderPictFormat *format, const rgba &bg);
+  rxvt_img *tint (const rgba &c);
+  rxvt_img *shade (nv factor, rgba c = rgba (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC));
+  rxvt_img *filter (const char *name, int nparams = 0, nv *params = 0);
+  rxvt_img *muladd (nv mul, nv add); // general multiply and add, implemented as the biggest hack ever :/
+
+  // egregious helper category
+  rxvt_img *replace (rxvt_img *&p)
+  {
+    delete p;
+    p = this;
+    return this;
+  }
+
+  /* these are considered private */
+  void destroy ();
+  rxvt_img *new_empty ();
+  Picture picture ();
+  rxvt_img *transform (const nv *matrix);
+};
+
+#endif
+
+#endif
+