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Imported from libpng-1.0.5c.tar

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This commit is contained in:
Glenn Randers-Pehrson
1999-11-27 10:22:33 -06:00
parent 6d8f3b080a
commit 5379b24536
46 changed files with 720 additions and 178 deletions
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16
contrib/gregbook/rpng2-x.c
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@@ -57,6 +57,10 @@
#include <X11/Xos.h>
#include <X11/keysym.h> /* defines XK_* macros */
#ifdef VMS
#include <unistd.h>
#endif
/* all for PvdM background code: */
#ifndef PI
# define PI 3.141592653589793238
@@ -721,7 +725,8 @@ static int rpng2_x_create_window()
static int rpng2_x_load_bg_image()
{
uch *src, *dest;
uch *src;
char *dest;
uch r1, r2, g1, g2, b1, b2;
uch r1_inv, r2_inv, g1_inv, g2_inv, b1_inv, b2_inv;
int k, hmax, max;
@@ -784,7 +789,7 @@ static int rpng2_x_load_bg_image()
g2_inv = g2_min + (g2_diff * (yidx_max-yidx)) / yidx_max;
b2_inv = b2_min + (b2_diff * (yidx_max-yidx)) / yidx_max;
dest = bg_data + row*bg_rowbytes;
dest = (char *)(bg_data + row*bg_rowbytes);
for (i = 0; i < rpng2_info.width; ++i) {
even_odd_horiz = (i / bgscale) & 1;
even_odd = even_odd_vert ^ even_odd_horiz;
@@ -837,7 +842,7 @@ static int rpng2_x_load_bg_image()
yidx = row % bgscale;
if (yidx > hmax)
yidx = bgscale-1 - yidx;
dest = bg_data + row*bg_rowbytes;
dest = (char *)(bg_data + row*bg_rowbytes);
for (i = 0; i < rpng2_info.width; ++i) {
xidx = i % bgscale;
if (xidx > hmax)
@@ -887,7 +892,7 @@ static int rpng2_x_load_bg_image()
for (row = 0; row < rpng2_info.height; ++row) {
y = row - hh;
dest = bg_data + row*bg_rowbytes;
dest = (char *)(bg_data + row*bg_rowbytes);
for (i = 0; i < rpng2_info.width; ++i) {
x = i - hw;
angle = (x == 0)? PI_2 : atan((double)y / (double)x);
@@ -1001,7 +1006,8 @@ static void rpng2_x_display_row(ulg row)
uch bg_red = rpng2_info.bg_red;
uch bg_green = rpng2_info.bg_green;
uch bg_blue = rpng2_info.bg_blue;
uch *src, *src2=NULL, *dest;
uch *src, *src2=NULL;
char *dest;
uch r, g, b, a;
int ximage_rowbytes = ximage->bytes_per_line;
ulg i, pixel;