From 26a624a543f2e723550996d76d90ccbb7b954aeb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bert=20M=C3=BCnnich?= <be.muennich@gmail.com>
Date: Thu, 22 Aug 2013 12:59:05 +0200
Subject: [PATCH] Added options for anti-alias & alpha layer coloring to
 config.def.h

Also removed now obsolete -p command line option; fixes issue #98
---
 README.md    |  1 -
 commands.c   |  4 +++-
 config.def.h | 13 +++++++++++++
 image.c      |  5 +++--
 options.c    |  8 ++------
 options.h    |  1 -
 sxiv.1       |  3 ---
 thumbs.c     |  3 ++-
 8 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/README.md b/README.md
index fe0711d..cda09ee 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,6 @@ of small previews is displayed, making it easy to choose an image to open.
     -n NUM       Start at picture NUM
     -N NAME      Set X window resource name to NAME
     -o           Write list of marked files to stdout when quitting
-    -p           Pixelize, i.e. turn off image anti-aliasing
     -q           Be quiet, disable warnings
     -r           Search given directories recursively for images
     -s           Scale all images to fit into window
diff --git a/commands.c b/commands.c
index 501a938..09ba926 100644
--- a/commands.c
+++ b/commands.c
@@ -74,8 +74,10 @@ bool it_quit(arg_t a)
 bool it_switch_mode(arg_t a)
 {
 	if (mode == MODE_IMAGE) {
-		if (tns.thumbs == NULL)
+		if (tns.thumbs == NULL) {
 			tns_init(&tns, filecnt, &win);
+			tns.alpha = img.alpha;
+		}
 		img_close(&img, false);
 		reset_timeout(reset_cursor);
 		tns.sel = fileidx;
diff --git a/config.def.h b/config.def.h
index d24723d..f5d048a 100644
--- a/config.def.h
+++ b/config.def.h
@@ -52,6 +52,19 @@ enum {
 /* default dimension of thumbnails (width == height): */
 enum { THUMB_SIZE = 60 };
 
+#endif
+#ifdef _RENDER_CONFIG
+
+/* if false, pixelate images at zoom level != 100%,
+ * toggled with 'a' key binding
+ */
+static const bool RENDER_ANTI_ALIAS = true;
+
+/* if true, use white background for alpha layer,
+ * toggled with 'A' key binding
+ */
+static const bool RENDER_WHITE_ALPHA = false;
+
 #endif
 #ifdef _MAPPINGS_CONFIG
 
diff --git a/image.c b/image.c
index cc93cd8..ec248e1 100644
--- a/image.c
+++ b/image.c
@@ -18,6 +18,7 @@
 
 #define _POSIX_C_SOURCE 200112L
 #define _IMAGE_CONFIG
+#define _RENDER_CONFIG
 
 #include <stdlib.h>
 #include <string.h>
@@ -62,8 +63,8 @@ void img_init(img_t *img, win_t *win)
 	img->zoom = MIN(img->zoom, zoom_max);
 	img->checkpan = false;
 	img->dirty = false;
-	img->aa = options->aa;
-	img->alpha = true;
+	img->aa = RENDER_ANTI_ALIAS;
+	img->alpha = !RENDER_WHITE_ALPHA;
 	img->multi.cap = img->multi.cnt = 0;
 	img->multi.animate = false;
 }
diff --git a/options.c b/options.c
index 2d35992..e47ad37 100644
--- a/options.c
+++ b/options.c
@@ -33,7 +33,7 @@ const options_t *options = (const options_t*) &_options;
 
 void print_usage(void)
 {
-	printf("usage: sxiv [-bcdFfhiopqrstvZ] [-g GEOMETRY] [-n NUM] "
+	printf("usage: sxiv [-bcdFfhioqrstvZ] [-g GEOMETRY] [-n NUM] "
 	       "[-N name] [-z ZOOM] FILES...\n");
 }
 
@@ -53,7 +53,6 @@ void parse_options(int argc, char **argv)
 
 	_options.scalemode = SCALE_MODE;
 	_options.zoom = 1.0;
-	_options.aa = true;
 
 	_options.fixed_win = false;
 	_options.fullscreen = false;
@@ -65,7 +64,7 @@ void parse_options(int argc, char **argv)
 	_options.thumb_mode = false;
 	_options.clean_cache = false;
 
-	while ((opt = getopt(argc, argv, "bcdFfg:hin:N:opqrstvZz:")) != -1) {
+	while ((opt = getopt(argc, argv, "bcdFfg:hin:N:oqrstvZz:")) != -1) {
 		switch (opt) {
 			case '?':
 				print_usage();
@@ -109,9 +108,6 @@ void parse_options(int argc, char **argv)
 			case 'o':
 				_options.to_stdout = true;
 				break;
-			case 'p':
-				_options.aa = false;
-				break;
 			case 'q':
 				_options.quiet = true;
 				break;
diff --git a/options.h b/options.h
index d60bc9a..848a6b2 100644
--- a/options.h
+++ b/options.h
@@ -34,7 +34,6 @@ typedef struct {
 	/* image: */
 	scalemode_t scalemode;
 	float zoom;
-	bool aa;
 
 	/* window: */
 	bool fixed_win;
diff --git a/sxiv.1 b/sxiv.1
index 8a03404..ee42a00 100644
--- a/sxiv.1
+++ b/sxiv.1
@@ -67,9 +67,6 @@ with
 .I \-i
 sxiv can be used as a visual filter/pipe.
 .TP
-.B \-p
-Pixelize images, i.e. turn off anti-aliasing.
-.TP
 .B \-q
 Be quiet, disable warnings to standard error stream.
 .TP
diff --git a/thumbs.c b/thumbs.c
index 48b3a75..ec6e5ef 100644
--- a/thumbs.c
+++ b/thumbs.c
@@ -18,6 +18,7 @@
 
 #define _POSIX_C_SOURCE 200112L
 #define _THUMBS_CONFIG
+#define _RENDER_CONFIG
 
 #include <stdlib.h>
 #include <string.h>
@@ -177,7 +178,7 @@ void tns_init(tns_t *tns, int cnt, win_t *win)
 	tns->cap = cnt;
 	tns->cnt = tns->first = tns->sel = 0;
 	tns->win = win;
-	tns->alpha = true;
+	tns->alpha = !RENDER_WHITE_ALPHA;
 	tns->dirty = false;
 
 	if ((homedir = getenv("HOME")) != NULL) {