From 64a5366508142ad938e4a6f9f8bdb5f375b1336c Mon Sep 17 00:00:00 2001
From: Bert <ber.t@gmx.com>
Date: Wed, 26 Jan 2011 14:42:10 +0100
Subject: [PATCH] Added <,> mappings to rotate image

---
 Makefile  |  2 +-
 README.md |  1 +
 image.c   | 33 ++++++++++++++++++++++++++++++++-
 image.h   |  3 +++
 main.c    |  8 ++++++++
 sxiv.1    |  7 +++++++
 6 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 6428781..d144865 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 all: sxiv
 
-VERSION=0.2
+VERSION=git-20110126
 
 CC?=gcc
 PREFIX?=/usr/local
diff --git a/README.md b/README.md
index ed71eca..4e66437 100644
--- a/README.md
+++ b/README.md
@@ -42,5 +42,6 @@ Use the following keys to control sxiv:
     +,=          Zoom in
     -            Zoom out
     h,j,k,l      Scroll left/down/up/right
+		<,>          Rotate image (counter-)clockwise by 90 degrees
     f            Toggle fullscreen mode (requires an EWMH/NetWM compliant
                  window manager)
diff --git a/image.c b/image.c
index 5187d51..beff925 100644
--- a/image.c
+++ b/image.c
@@ -104,7 +104,7 @@ void img_render(img_t *img, win_t *win) {
 	if (!img || !win || !imlib_context_get_image())
 		return;
 
-	if ((!img->re || !img->zoomed) && SCALE_MODE != SCALE_ZOOM) {
+	if (!img->zoomed && SCALE_MODE != SCALE_ZOOM) {
 		/* set zoom level to fit image into window */
 		zw = (float) win->w / (float) img->w;
 		zh = (float) win->h / (float) img->h;
@@ -241,3 +241,34 @@ int img_pan(img_t *img, win_t *win, pandir_t dir) {
 
 	return ox != img->x || oy != img->y;
 }
+
+int img_rotate(img_t *img, win_t *win, int d) {
+	int ox, oy, tmp;
+
+	if (!img || !win)
+		return 0;
+
+	ox = d == 1 ? img->x : win->w - img->x - img->w * img->zoom;
+	oy = d == 3 ? img->y : win->h - img->y - img->h * img->zoom;
+
+	imlib_image_orientate(d);
+
+	img->x = oy + (win->w - win->h) / 2;
+	img->y = ox + (win->h - win->w) / 2;
+
+	tmp = img->w;
+	img->w = img->h;
+	img->h = tmp;
+
+	img->checkpan = 1;
+
+	return 1;
+}
+
+int img_rotate_left(img_t *img, win_t *win) {
+	return img_rotate(img, win, 3);
+}
+
+int img_rotate_right(img_t *img, win_t *win) {
+	return img_rotate(img, win, 1);
+}
diff --git a/image.h b/image.h
index 4e4d816..55b825c 100644
--- a/image.h
+++ b/image.h
@@ -56,4 +56,7 @@ int img_zoom_out(img_t*);
 
 int img_pan(img_t*, win_t*, pandir_t);
 
+int img_rotate_left(img_t*, win_t*);
+int img_rotate_right(img_t*, win_t*);
+
 #endif /* IMAGE_H */
diff --git a/main.c b/main.c
index 9b7ed6b..039394c 100644
--- a/main.c
+++ b/main.c
@@ -219,6 +219,14 @@ void on_keypress(XEvent *ev) {
 			changed = img_pan(&img, &win, PAN_RIGHT);
 			break;
 
+		/* rotation */
+		case '<':
+			changed = img_rotate_left(&img, &win);
+			break;
+		case '>':
+			changed = img_rotate_right(&img, &win);
+			break;
+
 		/* Control window */
 		case 'f':
 			win_toggle_fullscreen(&win);
diff --git a/sxiv.1 b/sxiv.1
index d567680..b9a3b95 100644
--- a/sxiv.1
+++ b/sxiv.1
@@ -65,6 +65,13 @@ Pan up.
 .TP
 .B l
 Pan right.
+.SS Rotation
+.TP
+.B <
+Rotate image counter-clockwise by 90 degrees.
+.TP
+.B >
+Rotate image clockwise by 90 degrees.
 .SS Control window
 .TP
 .B f