Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 288 insertions, 0 deletions

diff --git a/gtk2_ardour/rgb_macros.h b/gtk2_ardour/rgb_macros.h
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+++ b/gtk2_ardour/rgb_macros.h
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+/*
+    Copyright (C) 2000 EMC Capital Management, Inc.
+  
+    Developed by Jon Trowbridge <trow@gnu.org> and
+    Havoc Pennington <hp@pobox.com>.
+    
+    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 2 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.
+
+    $Id$
+*/
+
+#ifndef __gtk_ardour_rgb_macros_h__
+#define __gtk_ardour_rgb_macros_h__
+
+/*
+  Some convenient macros for drawing into an RGB buffer.
+  Beware of side effects, code-bloat, and all of the other classic
+  cpp-perils...
+*/
+
+#define RGB_TO_UINT(r,g,b) ((((guint)(r))<<16)|(((guint)(g))<<8)|((guint)(b)))
+#define RGB_TO_RGBA(x,a) (((x) << 8) | ((((guint)a) & 0xff)))
+#define RGBA_TO_UINT(r,g,b,a) RGB_TO_RGBA(RGB_TO_UINT(r,g,b), a)
+#define RGB_WHITE  RGB_TO_UINT(0xff, 0xff, 0xff)
+#define RGB_BLACK  RGB_TO_UINT(0x00, 0x00, 0x00)
+#define RGB_RED    RGB_TO_UINT(0xff, 0x00, 0x00)
+#define RGB_GREEN  RGB_TO_UINT(0x00, 0xff, 0x00)
+#define RGB_BLUE   RGB_TO_UINT(0x00, 0x00, 0xff)
+#define RGB_YELLOW RGB_TO_UINT(0xff, 0xff, 0x00)
+#define RGB_VIOLET RGB_TO_UINT(0xff, 0x00, 0xff)
+#define RGB_CYAN   RGB_TO_UINT(0x00, 0xff, 0xff)
+#define RGBA_WHITE  RGB_TO_RGBA(RGB_WHITE, 0xff)
+#define RGBA_BLACK  RGB_TO_RGBA(RGB_BLACK, 0xff)
+#define RGBA_RED    RGB_TO_RGBA(RGB_RED, 0xff)
+#define RGBA_GREEN  RGB_TO_RGBA(RGB_GREEN, 0xff)
+#define RGBA_BLUE   RGB_TO_RGBA(RGB_BLUE, 0xff)
+#define RGBA_YELLOW RGB_TO_RGBA(RGB_YELLOW, 0xff)
+#define RGBA_VIOLET RGB_TO_RGBA(RGB_VIOLET, 0xff)
+#define RGBA_CYAN   RGB_TO_RGBA(RGB_CYAN, 0xff)
+#define RGB_GREY(x) RGB_TO_UINT(x,x,x)
+#define RGBA_GREY(x) RGB_TO_RGBA(RGB_GREY(x), 0xff)
+#define UINT_RGBA_R(x) (((guint)(x))>>24)
+#define UINT_RGBA_G(x) ((((guint)(x))>>16)&0xff)
+#define UINT_RGBA_B(x) ((((guint)(x))>>8)&0xff)
+#define UINT_RGBA_A(x) (((guint)(x))&0xff)
+#define UINT_RGBA_CHANGE_R(x, r) (((x)&(~(0xff<<24)))|(((r)&0xff)<<24))
+#define UINT_RGBA_CHANGE_G(x, g) (((x)&(~(0xff<<16)))|(((g)&0xff)<<16))
+#define UINT_RGBA_CHANGE_B(x, b) (((x)&(~(0xff<<8)))|(((b)&0xff)<<8))
+#define UINT_RGBA_CHANGE_A(x, a) (((x)&(~0xff))|((a)&0xff))
+#define UINT_TO_RGB(u,r,g,b) \
+{ (*(r)) = ((u)>>16)&0xff; (*(g)) = ((u)>>8)&0xff; (*(b)) = (u)&0xff; }
+#define UINT_TO_RGBA(u,r,g,b,a) \
+{ UINT_TO_RGB(((u)>>8),r,g,b); (*(a)) = (u)&0xff; }
+#define MONO_INTERPOLATE(v1, v2, t) ((gint)rint((v2)*(t)+(v1)*(1-(t))))
+#define UINT_INTERPOLATE(c1, c2, t) \
+  RGBA_TO_UINT( MONO_INTERPOLATE(UINT_RGBA_R(c1), UINT_RGBA_R(c2), t), \
+		MONO_INTERPOLATE(UINT_RGBA_G(c1), UINT_RGBA_G(c2), t), \
+		MONO_INTERPOLATE(UINT_RGBA_B(c1), UINT_RGBA_B(c2), t), \
+		MONO_INTERPOLATE(UINT_RGBA_A(c1), UINT_RGBA_A(c2), t) )
+#define PIXEL_RGB(p, r, g, b) \
+{((guchar*)(p))[0]=(r); ((guchar*)(p))[1]=(g); ((guchar*)(p))[2]=(b);}
+#define PIXEL_RGBA(p, r, g, b, a) \
+{ if ((a)>=0xff) { PIXEL_RGB(p,r,g,b) } \
+  else if ((a)>0) { \
+    guint pixel_tmp; \
+    pixel_tmp = ((guchar*)(p))[0]; \
+    ((guchar*)(p))[0] = pixel_tmp + ((((r)-pixel_tmp)*(a)+0x80) >> 8); \
+    pixel_tmp = ((guchar*)(p))[1]; \
+    ((guchar*)(p))[1] = pixel_tmp + ((((g)-pixel_tmp)*(a)+0x80) >> 8); \
+    pixel_tmp = ((guchar*)(p))[2]; \
+    ((guchar*)(p))[2] = pixel_tmp + ((((b)-pixel_tmp)*(a)+0x80) >> 8); }}
+#define PIXEL_RGB_UINT(p, i) \
+UINT_TO_RGB((i), ((guchar*)p), ((guchar*)p)+1, ((guchar*)p)+2)
+#define PIXEL_RGBA_UINT(p, i) \
+  PIXEL_RGBA((p), ((i)>>24)&0xff, ((i)>>16)&0xff, ((i)>>8)&0xff, (i)&0xff)
+#define PIXEL_BLACK(p) PIXEL_RGB(p,0,0,0)
+#define PIXEL_WHITE(p) PIXEL_RGB(p,0xff,0xff,0xff)
+#define PIXEL_GREY(p,g) PIXEL_RGB(p,g,g,g)
+#define PIXEL_GREYA(p,g,a) PIXEL_RGBA(p,g,g,g,a)
+#define BUF_PTR(inbuf, ptx, pty) \
+ ((inbuf)->buf + 3*((ptx)-(inbuf)->rect.x0) + (inbuf)->buf_rowstride*((pty)-(inbuf)->rect.y0))
+#define BUF_INBOUNDS_X(inbuf, ptx) \
+((inbuf)->rect.x0 <= (ptx) && (ptx) < (inbuf)->rect.x1)
+#define BUF_INBOUNDS_Y(inbuf, pty) \
+((inbuf)->rect.y0 <= (pty) && (pty) < (inbuf)->rect.y1)
+#define PAINT_DOT(inbuf, colr, colg, colb,ptx, pty) \
+{ \
+  guchar* pd_p; \
+  if (BUF_INBOUNDS_X(inbuf, ptx) && BUF_INBOUNDS_Y(inbuf, pty)) { \
+    pd_p = BUF_PTR(inbuf, ptx, pty); \
+    PIXEL_RGB(pd_p, (colr), (colg), (colb)); \
+  } \
+}
+#define FAST_PAINT_DOT(inbuf, colr, colg, colb,ptx, pty) \
+{ \
+  guchar* pd_p; \
+  pd_p = BUF_PTR(inbuf, ptx, pty); \
+  PIXEL_RGB(pd_p, (colr), (colg), (colb)); \
+}
+#define PAINT_DOTA(inbuf, colr, colg, colb, cola, ptx, pty) \
+{ \
+  guchar* pd_p; \
+  if (BUF_INBOUNDS_X(inbuf, ptx) && BUF_INBOUNDS_Y(inbuf, pty)) { \
+    pd_p = BUF_PTR(inbuf, ptx, pty); \
+    PIXEL_RGBA(pd_p, (colr), (colg), (colb), (cola)); \
+  } \
+}
+#define FAST_PAINT_DOTA(inbuf, colr, colg, colb, cola, ptx, pty) \
+{ \
+  guchar* pd_p; \
+  pd_p = BUF_PTR(inbuf, ptx, pty); \
+  PIXEL_RGBA(pd_p, (colr), (colg), (colb), (cola)); \
+}
+#define PAINT_HORIZ(inbuf, colr, colg, colb, ptx0, ptx1, pty) \
+{ \
+  GtkCanvasBuf* ph_buf = (inbuf); \
+  guchar* ph_p; \
+  gint ph_a0, ph_a1; \
+  gint ph_colr=(colr), ph_colg=(colg), ph_colb=(colb); \
+\
+  ph_a0 = MAX(ph_buf->rect.x0, (ptx0)); \
+  ph_a1 = MIN(ph_buf->rect.x1, (ptx1)); \
+\
+  if (ph_a0 < ph_a1 && BUF_INBOUNDS_Y(ph_buf, pty)) { \
+    ph_p = BUF_PTR(ph_buf, ph_a0, pty); \
+    while (ph_a0 < ph_a1) { \
+      PIXEL_RGB(ph_p, ph_colr, ph_colg, ph_colb); \
+      ++ph_a0; \
+      ph_p += 3; \
+    } \
+  } \
+}
+#define FAST_PAINT_HORIZ(inbuf, colr, colg, colb, ptx0, ptx1, pty) \
+{ \
+  GtkCanvasBuf* ph_buf = (inbuf); \
+  guchar* ph_p; \
+  gint ph_a0, ph_a1; \
+  gint ph_colr=(colr), ph_colg=(colg), ph_colb=(colb); \
+\
+  ph_a0 = MAX(ph_buf->rect.x0, (ptx0)); \
+  ph_a1 = MIN(ph_buf->rect.x1, (ptx1)); \
+\
+  if (ph_a0 < ph_a1 && BUF_INBOUNDS_Y(ph_buf, pty)) { \
+    ph_p = BUF_PTR(ph_buf, ph_a0, pty); \
+    while (ph_a0 < ph_a1) { \
+      PIXEL_RGB(ph_p, ph_colr, ph_colg, ph_colb); \
+      ++ph_a0; \
+      ph_p += 3; \
+    } \
+  } \
+}
+#define PAINT_HORIZA(inbuf, colr, colg, colb, cola, ptx0, ptx1, pty) \
+{ \
+  GtkCanvasBuf* ph_buf = (inbuf); \
+  guchar* ph_p; \
+  gint ph_a0, ph_a1; \
+  gint ph_colr=(colr), ph_colg=(colg), ph_colb=(colb), ph_cola=(cola); \
+\
+  ph_a0 = MAX(ph_buf->rect.x0, (ptx0)); \
+  ph_a1 = MIN(ph_buf->rect.x1, (ptx1)); \
+\
+  if (ph_a0 < ph_a1 && BUF_INBOUNDS_Y(ph_buf, pty)) { \
+    ph_p = BUF_PTR(ph_buf, ph_a0, pty); \
+    while (ph_a0 < ph_a1) { \
+      PIXEL_RGBA(ph_p, ph_colr, ph_colg, ph_colb, ph_cola); \
+      ++ph_a0; \
+      ph_p += 3; \
+    } \
+  } \
+}
+#define PAINT_VERT(inbuf, colr, colg, colb, ptx, pty0, pty1) \
+{ \
+  GtkCanvasBuf* pv_buf = (inbuf); \
+  guchar* pv_p; \
+  gint pv_b0, pv_b1; \
+  gint pv_colr=(colr), pv_colg=(colg), pv_colb=(colb);\
+\
+  pv_b0 = MAX(pv_buf->rect.y0, (pty0)); \
+  pv_b1 = MIN(pv_buf->rect.y1, (pty1)); \
+\
+ if (pv_b0 < pv_b1 && BUF_INBOUNDS_X(pv_buf, ptx)) { \
+    pv_p = BUF_PTR(pv_buf, ptx, pv_b0); \
+    while (pv_b0 < pv_b1) { \
+      PIXEL_RGB(pv_p, pv_colr, pv_colg, pv_colb); \
+      ++pv_b0; \
+      pv_p += pv_buf->buf_rowstride; \
+    } \
+  } \
+}
+#define FAST_PAINT_VERT(inbuf, colr, colg, colb, ptx, pty0, pty1) \
+{ \
+  GtkCanvasBuf* fpv_buf = (inbuf); \
+  guchar* fpv_p; \
+  gint fpv_b0, fpv_b1; \
+\
+  fpv_b0 = MAX(fpv_buf->rect.y0, (pty0)); \
+  fpv_b1 = MIN(fpv_buf->rect.y1, (pty1)); \
+\
+  fpv_p = BUF_PTR(fpv_buf, ptx, fpv_b0); \
+\
+  while (fpv_b0 < fpv_b1) { \
+      PIXEL_RGB(fpv_p, colr, colg, colb); \
+      ++fpv_b0; \
+      fpv_p += fpv_buf->buf_rowstride; \
+  } \
+}
+#define PAINT_VERTA(inbuf, colr, colg, colb, cola, ptx, pty0, pty1) \
+{ \
+  GtkCanvasBuf* pv_buf = (inbuf); \
+  guchar* pv_p; \
+  gint pv_b0, pv_b1; \
+  gint pv_colr=(colr), pv_colg=(colg), pv_colb=(colb), pv_cola=(cola);\
+\
+  pv_b0 = MAX(pv_buf->rect.y0, (pty0)); \
+  pv_b1 = MIN(pv_buf->rect.y1, (pty1)); \
+\
+ if (pv_b0 < pv_b1 && BUF_INBOUNDS_X(pv_buf, ptx)) { \
+    pv_p = BUF_PTR(pv_buf, ptx, pv_b0); \
+    while (pv_b0 < pv_b1) { \
+      PIXEL_RGBA(pv_p, pv_colr, pv_colg, pv_colb, pv_cola); \
+      ++pv_b0; \
+      pv_p += pv_buf->buf_rowstride; \
+    } \
+  } \
+}
+
+/* Paint a solid-colored box into a GtkCanvasBuf (clipping as necessary).
+   The box contains (ptx0,pty0), but not (ptx1, pty1).
+   Each macro arg should appear exactly once in the body of the code. */
+#define PAINT_BOX(inbuf, colr, colg, colb, cola, ptx0, pty0, ptx1, pty1) \
+{ \
+  GtkCanvasBuf* pb_buf = (inbuf); \
+  guchar* pb_p; \
+  guchar* pb_pp; \
+  gint pb_a0, pb_a1, pb_b0, pb_b1, pb_i, pb_j; \
+  gint pb_colr=(colr), pb_colg=(colg), pb_colb=(colb), pb_cola=(cola); \
+\
+  pb_a0 = MAX(pb_buf->rect.x0, (ptx0)); \
+  pb_a1 = MIN(pb_buf->rect.x1, (ptx1)); \
+  pb_b0 = MAX(pb_buf->rect.y0, (pty0)); \
+  pb_b1 = MIN(pb_buf->rect.y1, (pty1)); \
+\
+  if (pb_a0 < pb_a1 && pb_b0 < pb_b1) { \
+    pb_p = BUF_PTR(pb_buf, pb_a0, pb_b0); \
+    for (pb_j=pb_b0; pb_j<pb_b1; ++pb_j) { \
+      pb_pp = pb_p; \
+      for (pb_i=pb_a0; pb_i<pb_a1; ++pb_i) { \
+        PIXEL_RGBA(pb_pp, pb_colr, pb_colg, pb_colb, pb_cola); \
+        pb_pp += 3; \
+      } \
+      pb_p += pb_buf->buf_rowstride; \
+    } \
+  } \
+}
+
+/* No bounds checking in this version */
+
+#define FAST_PAINT_BOX(inbuf, colr, colg, colb, cola, ptx0, pty0, ptx1, pty1) \
+{ \
+  GtkCanvasBuf* pb_buf = (inbuf); \
+  guchar* pb_p; \
+  guchar* pb_pp; \
+  gint pb_i, pb_j; \
+\
+  pb_p = BUF_PTR(pb_buf, ptx0, pty0); \
+  for (pb_j=pty0; pb_j<pty1; ++pb_j) { \
+      pb_pp = pb_p; \
+      for (pb_i=ptx0; pb_i<ptx1; ++pb_i) { \
+        PIXEL_RGBA(pb_pp, colr, colg, colb, cola); \
+        pb_pp += 3; \
+      } \
+      pb_p += pb_buf->buf_rowstride; \
+    } \
+}
+
+#endif /* __gtk_ardour_rgb_macros_h__ */