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-rw-r--r--src/ui/gradient.c128
1 files changed, 64 insertions, 64 deletions
diff --git a/src/ui/gradient.c b/src/ui/gradient.c
index cac22be1..78a5a9eb 100644
--- a/src/ui/gradient.c
+++ b/src/ui/gradient.c
@@ -2,11 +2,11 @@
/* Marco gradient rendering */
-/*
+/*
* Copyright (C) 2001 Havoc Pennington, 99% copied from wrlib in
* WindowMaker, Copyright (C) 1997-2000 Dan Pascu and Alfredo Kojima
* Copyright (C) 2005 Elijah Newren
- *
+ *
* 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
@@ -16,7 +16,7 @@
* 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., 51 Franklin St, Fifth Floor, Boston, MA
@@ -74,7 +74,7 @@ blank_pixbuf (int width, int height, gboolean no_padding)
if (no_padding)
rowstride = width * 3;
else
- /* Always align rows to 32-bit boundaries */
+ /* Always align rows to 32-bit boundaries */
rowstride = 4 * ((3 * width + 3) / 4);
buf = g_try_malloc (height * rowstride);
@@ -163,7 +163,7 @@ meta_gradient_create_interwoven (int width,
const GdkColor colors2[2],
int thickness2)
{
-
+
int i, j, k, l, ll;
long r1, g1, b1, dr1, dg1, db1;
long r2, g2, b2, dr2, dg2, db2;
@@ -171,14 +171,14 @@ meta_gradient_create_interwoven (int width,
unsigned char *ptr;
unsigned char *pixels;
int rowstride;
-
+
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
+
r1 = colors1[0].red<<8;
g1 = colors1[0].green<<8;
b1 = colors1[0].blue<<8;
@@ -198,7 +198,7 @@ meta_gradient_create_interwoven (int width,
for (i=0,k=0,l=0,ll=thickness1; i<height; i++)
{
ptr = pixels + i * rowstride;
-
+
if (k == 0)
{
ptr[0] = (unsigned char) (r1>>16);
@@ -233,7 +233,7 @@ meta_gradient_create_interwoven (int width,
r1+=dr1;
g1+=dg1;
b1+=db1;
-
+
r2+=dr2;
g2+=dg2;
b2+=db2;
@@ -246,20 +246,20 @@ meta_gradient_create_interwoven (int width,
*----------------------------------------------------------------------
* meta_gradient_create_horizontal--
* Renders a horizontal linear gradient of the specified size in the
- * GdkPixbuf format with a border of the specified type.
- *
+ * GdkPixbuf format with a border of the specified type.
+ *
* Returns:
* A 24bit GdkPixbuf with the gradient (no alpha channel).
- *
+ *
* Side effects:
* None
- *----------------------------------------------------------------------
+ *----------------------------------------------------------------------
*/
static GdkPixbuf*
meta_gradient_create_horizontal (int width, int height,
const GdkColor *from,
const GdkColor *to)
-{
+{
int i;
long r, g, b, dr, dg, db;
GdkPixbuf *pixbuf;
@@ -272,22 +272,22 @@ meta_gradient_create_horizontal (int width, int height,
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
ptr = pixels;
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
+
r0 = (guchar) (from->red / 256.0);
g0 = (guchar) (from->green / 256.0);
b0 = (guchar) (from->blue / 256.0);
rf = (guchar) (to->red / 256.0);
gf = (guchar) (to->green / 256.0);
- bf = (guchar) (to->blue / 256.0);
-
+ bf = (guchar) (to->blue / 256.0);
+
r = r0 << 16;
g = g0 << 16;
b = b0 << 16;
-
+
dr = ((rf-r0)<<16)/(int)width;
dg = ((gf-g0)<<16)/(int)width;
db = ((bf-b0)<<16)/(int)width;
@@ -336,21 +336,21 @@ meta_gradient_create_vertical (int width, int height,
int rf, gf, bf;
int rowstride;
unsigned char *pixels;
-
+
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
+
r0 = (guchar) (from->red / 256.0);
g0 = (guchar) (from->green / 256.0);
b0 = (guchar) (from->blue / 256.0);
rf = (guchar) (to->red / 256.0);
gf = (guchar) (to->green / 256.0);
bf = (guchar) (to->blue / 256.0);
-
+
r = r0<<16;
g = g0<<16;
b = b0<<16;
@@ -362,7 +362,7 @@ meta_gradient_create_vertical (int width, int height,
for (i=0; i<height; i++)
{
ptr = pixels + i * rowstride;
-
+
ptr[0] = (unsigned char)(r>>16);
ptr[1] = (unsigned char)(g>>16);
ptr[2] = (unsigned char)(b>>16);
@@ -405,7 +405,7 @@ meta_gradient_create_diagonal (int width, int height,
unsigned char *ptr;
unsigned char *pixels;
int rowstride;
-
+
if (width == 1)
return meta_gradient_create_vertical (width, height, from, to);
else if (height == 1)
@@ -414,7 +414,7 @@ meta_gradient_create_diagonal (int width, int height,
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
@@ -452,27 +452,27 @@ meta_gradient_create_multi_horizontal (int width, int height,
GdkPixbuf *pixbuf;
unsigned char *ptr;
unsigned char *pixels;
- int width2;
+ int width2;
int rowstride;
-
+
g_return_val_if_fail (count > 2, NULL);
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
ptr = pixels;
-
+
if (count > width)
count = width;
-
+
if (count > 1)
width2 = width/(count-1);
else
width2 = width;
-
+
k = 0;
r = colors[0].red << 8;
@@ -505,7 +505,7 @@ meta_gradient_create_multi_horizontal (int width, int height,
*ptr++ = (unsigned char)(g>>16);
*ptr++ = (unsigned char)(b>>16);
}
-
+
/* copy the first line to the other lines */
for (i=1; i<height; i++)
{
@@ -526,25 +526,25 @@ meta_gradient_create_multi_vertical (int width, int height,
int height2;
int x;
int rowstride;
-
+
g_return_val_if_fail (count > 2, NULL);
pixbuf = blank_pixbuf (width, height, FALSE);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
ptr = pixels;
-
+
if (count > height)
count = height;
-
+
if (count > 1)
height2 = height/(count-1);
else
height2 = height;
-
+
k = 0;
r = colors[0].red << 8;
@@ -568,7 +568,7 @@ meta_gradient_create_multi_vertical (int width, int height,
memcpy (&(ptr[x*3]), ptr, (width - x)*3);
ptr += rowstride;
-
+
r += dr;
g += dg;
b += db;
@@ -592,14 +592,14 @@ meta_gradient_create_multi_vertical (int width, int height,
memcpy (&(ptr[x*3]), ptr, (width - x)*3);
ptr += rowstride;
-
+
for (j=k+1; j<height; j++)
{
memcpy (ptr, tmp, rowstride);
ptr += rowstride;
}
}
-
+
return pixbuf;
}
@@ -615,7 +615,7 @@ meta_gradient_create_multi_diagonal (int width, int height,
unsigned char *ptr;
unsigned char *pixels;
int rowstride;
-
+
g_return_val_if_fail (count > 2, NULL);
if (width == 1)
@@ -627,10 +627,10 @@ meta_gradient_create_multi_diagonal (int width, int height,
width, height);
if (pixbuf == NULL)
return NULL;
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
+
if (count > width)
count = width;
if (count > height)
@@ -677,12 +677,12 @@ simple_multiply_alpha (GdkPixbuf *pixbuf,
int row;
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
-
+
if (alpha == 255)
return;
-
+
g_assert (gdk_pixbuf_get_has_alpha (pixbuf));
-
+
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
@@ -707,7 +707,7 @@ simple_multiply_alpha (GdkPixbuf *pixbuf,
*/
/* ((*p / 255.0) * (alpha / 255.0)) * 255; */
*p = (guchar) (((int) *p * (int) alpha) / (int) 255);
-
+
++p; /* skip A */
}
@@ -724,13 +724,13 @@ meta_gradient_add_alpha_horizontal (GdkPixbuf *pixbuf,
long a, da;
unsigned char *p;
unsigned char *pixels;
- int width2;
+ int width2;
int rowstride;
int width, height;
unsigned char *gradient;
unsigned char *gradient_p;
unsigned char *gradient_end;
-
+
g_return_if_fail (n_alphas > 0);
if (n_alphas == 1)
@@ -739,24 +739,24 @@ meta_gradient_add_alpha_horizontal (GdkPixbuf *pixbuf,
simple_multiply_alpha (pixbuf, alphas[0]);
return;
}
-
+
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
gradient = g_new (unsigned char, width);
gradient_end = gradient + width;
-
+
if (n_alphas > width)
n_alphas = width;
-
+
if (n_alphas > 1)
width2 = width / (n_alphas - 1);
else
width2 = width;
-
+
a = alphas[0] << 8;
gradient_p = gradient;
-
+
/* render the gradient into an array */
for (i = 1; i < n_alphas; i++)
{
@@ -765,7 +765,7 @@ meta_gradient_add_alpha_horizontal (GdkPixbuf *pixbuf,
for (j = 0; j < width2; j++)
{
*gradient_p++ = (a >> 8);
-
+
a += da;
}
@@ -777,11 +777,11 @@ meta_gradient_add_alpha_horizontal (GdkPixbuf *pixbuf,
{
*gradient_p++ = a >> 8;
}
-
+
/* Now for each line of the pixbuf, fill in with the gradient */
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
+
p = pixels;
i = 0;
while (i < height)
@@ -807,7 +807,7 @@ meta_gradient_add_alpha_horizontal (GdkPixbuf *pixbuf,
p = row_end;
++i;
}
-
+
g_free (gradient);
}
@@ -820,21 +820,21 @@ meta_gradient_add_alpha (GdkPixbuf *pixbuf,
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
g_return_if_fail (gdk_pixbuf_get_has_alpha (pixbuf));
g_return_if_fail (n_alphas > 0);
-
+
switch (type)
{
case META_GRADIENT_HORIZONTAL:
meta_gradient_add_alpha_horizontal (pixbuf, alphas, n_alphas);
break;
-
+
case META_GRADIENT_VERTICAL:
g_printerr ("marco: vertical alpha channel gradient not implemented yet\n");
break;
-
+
case META_GRADIENT_DIAGONAL:
g_printerr ("marco: diagonal alpha channel gradient not implemented yet\n");
break;
-
+
case META_GRADIENT_LAST:
g_assert_not_reached ();
break;
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