Replace -w with well-known geometry option

image.c

@@ -254,11 +254,11 @@ int img_pan(img_t *img, win_t *win, pandir_t dir) {
 		case PAN_LEFT:
 			return img_move(img, win, win->w / 5, 0);
 		case PAN_RIGHT:
-			return img_move(img, win, -win->w / 5, 0);
+			return img_move(img, win, win->w / 5 * -1, 0);
 		case PAN_UP:
 			return img_move(img, win, 0, win->h / 5);
 		case PAN_DOWN:
-			return img_move(img, win, 0, -win->h / 5);
+			return img_move(img, win, 0, win->h / 5 * -1);
 	}
 
 	return 0;

options.c

@@ -29,7 +29,7 @@ options_t _options;
 const options_t *options = (const options_t*) &_options;
 
 void print_usage() {
-	printf("usage: sxiv [-dfhpsvWZ] [-w WIDTH[xHEIGHT]] [-z ZOOM] FILES...\n");
+	printf("usage: sxiv [-dfhpsvWZ] [-g GEOMETRY] [-z ZOOM] FILES...\n");
 }
 
 void print_version() {
@@ -38,7 +38,6 @@ void print_version() {
 }
 
 void parse_options(int argc, char **argv) {
-	unsigned short w, h;
 	float z;
 	int opt;
 
@@ -46,13 +45,12 @@ void parse_options(int argc, char **argv) {
 	_options.zoom = 1.0;
 	_options.aa = 1;
 
-	_options.winw = w = 0;
-	_options.winh = h = 0;
 	_options.fullscreen = 0;
+	_options.geometry = NULL;
 
 	_options.warn = 0;
 
-	while ((opt = getopt(argc, argv, "dfhpsvWw:Zz:")) != -1) {
+	while ((opt = getopt(argc, argv, "dfg:hpsvWZz:")) != -1) {
 		switch (opt) {
 			case '?':
 				print_usage();
@@ -63,6 +61,9 @@ void parse_options(int argc, char **argv) {
 			case 'f':
 				_options.fullscreen = 1;
 				break;
+			case 'g':
+				_options.geometry = optarg;
+				break;
 			case 'h':
 				print_usage();
 				exit(0);
@@ -78,16 +79,6 @@ void parse_options(int argc, char **argv) {
 			case 'W':
 				_options.warn = 1;
 				break;
-			case 'w':
-				if (!sscanf(optarg, "%hux%hu", &w, &h)) {
-					fprintf(stderr, "sxiv: invalid argument for option -w: %s\n",
-					        optarg);
-					exit(1);
-				} else {
-					_options.winw = (int) w;
-					_options.winh = (int) h;
-				}
-				break;
 			case 'Z':
 				_options.scalemode = SCALE_ZOOM;
 				_options.zoom = 1.0;
@@ -105,13 +96,6 @@ void parse_options(int argc, char **argv) {
 		}
 	}
 
-	if (!_options.winw) {
-		_options.winw = WIN_WIDTH;
-		_options.winh = WIN_HEIGHT;
-	} else if (!_options.winh) {
-		_options.winh = _options.winw;
-	}
-
 	_options.filenames = (const char**) argv + optind;
 	_options.filecnt = argc - optind;
 }

options.h

@@ -29,9 +29,8 @@ typedef struct options_s {
 	float zoom;
 	unsigned char aa;
 
-	int winw;
-	int winh;
 	unsigned char fullscreen;
+	char *geometry;
 
 	unsigned char warn;
 } options_t;

window.c

@@ -35,6 +35,7 @@ void win_open(win_t *win) {
 	win_env_t *e;
 	XClassHint *classhint;
 	XColor bgcol;
+	int gmask;
 
 	if (!win)
 		return;
@@ -58,10 +59,25 @@ void win_open(win_t *win) {
 	win->pm = 0;
 
 	win->fullscreen = 0;
-	win->w = MIN(options->winw, e->scrw);
-	win->h = MIN(options->winh, e->scrh);
-	win->x = (e->scrw - win->w) / 2;
-	win->y = (e->scrh - win->h) / 2;
+	
+	/* determine window offsets, width & height */
+	if (!options->geometry)
+		gmask = 0;
+	else
+		gmask = XParseGeometry(options->geometry, &win->x, &win->y,
+		                       &win->w, &win->h);
+	if (!(gmask & WidthValue))
+		win->w = WIN_WIDTH;
+	if (win->w > e->scrw)
+		win->w = e->scrw;
+	if (!(gmask & HeightValue))
+		win->h = WIN_HEIGHT;
+	if (win->h > e->scrh)
+		win->h = e->scrh;
+	if (!(gmask & XValue))
+		win->x = (e->scrw - win->w) / 2;
+	if (!(gmask & YValue))
+		win->y = (e->scrh - win->h) / 2;
 
 	win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
 	                          win->x, win->y, win->w, win->h, 0,

window.h

@@ -44,12 +44,12 @@ typedef struct win_s {
 	unsigned long bgcol;
 	Pixmap pm;
 
-	int w;
-	int h;
 	int x;
 	int y;
+	unsigned int w;
+	unsigned int h;
 
-	int bw;
+	unsigned int bw;
 	unsigned char fullscreen;
 } win_t;