Fex

Check-in [6ba49fe548]

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Overview
Comment:code cleanup
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk | master
Files: files | file ages | folders
SHA3-256: 6ba49fe548a885f66f3ffc8f06835a9224b30d13949d26ce7d258d8987bd5ae7
User & Date: jesse@mccluresk9.com 2014-10-07 17:37:11
Context
2015-01-07
20:10
frequency trace exporing to work with WarpZone check-in: 2cc45f4303 user: jesse@mccluresk9.com tags: trunk, master
2014-10-07
17:37
code cleanup check-in: 6ba49fe548 user: jesse@mccluresk9.com tags: trunk, master
17:07
strict -Wall -Werror patching up check-in: 9d6841b701 user: jesse@mccluresk9.com tags: trunk, master
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to Makefile. 

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MODULES  =  config fex fft spectro wave xlib
HEADERS  =  fex.h
MANPAGES =  fex.1 fex-help.1
VPATH    =  src:doc

${PROG}: ${MODULES:%=%.o}

xlib.o: xlib.c xlib_toolwin.c ${HEADERS}

config.o: config.c config.h ${HEADERS}

%.o: %.c ${HEADERS}

install: ${PROG}
	@install -Dm755 ${PROG} ${DESTDIR}${PREFIX}/bin/${PROG}








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MODULES  =  config fex fft spectro wave xlib
HEADERS  =  fex.h
MANPAGES =  fex.1 fex-help.1
VPATH    =  src:doc

${PROG}: ${MODULES:%=%.o}

xlib.o: xlib.c xlib_toolwin.c xlib_events.c xlib_actions.c ${HEADERS}

config.o: config.c config.h ${HEADERS}

%.o: %.c ${HEADERS}

install: ${PROG}
	@install -Dm755 ${PROG} ${DESTDIR}${PREFIX}/bin/${PROG}

Changes to src/config.c. 

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		conf.help_cmd[i+1] = NULL;
		help_arg = strtok(NULL," ");
	}
	/* return audio file name */
	return fname;
}

int deconfig() {
	/* clean up, free data */
	int i;
	for (i = 0; conf.help_cmd[i]; i++) free(conf.help_cmd[i]);
	free(conf.help_cmd);
	cairo_font_face_destroy(conf.font);
	cairo_font_face_destroy(conf.bfont);
	return 0;
}








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		conf.help_cmd[i+1] = NULL;
		help_arg = strtok(NULL," ");
	}
	/* return audio file name */
	return fname;
}

int deconfigure() {
	/* clean up, free data */
	int i;
	for (i = 0; conf.help_cmd[i]; i++) free(conf.help_cmd[i]);
	free(conf.help_cmd);
	cairo_font_face_destroy(conf.font);
	cairo_font_face_destroy(conf.bfont);
	return 0;
}

Changes to src/fex.c. 

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	else if (conf.long_out)
		fprintf(stdout,"NA\tNA\tNA\n");
	else
		fprintf(stdout,"NA\n");

	free_spectro();
	free_fft(&fft);

	return 0;
}








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	else if (conf.long_out)
		fprintf(stdout,"NA\tNA\tNA\n");
	else
		fprintf(stdout,"NA\n");

	free_spectro();
	free_fft(&fft);
	deconfigure();
	return 0;
}

Changes to src/fex.h. 

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	Bool long_out, layers;
} Config;

/* main.c */
extern int die(const char *, ...);
/* config.c */
extern const char *configure(int, const char **);

/* fft.c */
extern FFT *create_fft(Wave *);
extern int free_fft(FFT **);
/* spectro.c */
extern int create_spectro(FFT *, const char *);
extern int free_spectro();
extern int spectro_spec();
extern int spectro_thresh();
extern int spectro_points();
extern int spectro_draw();
/* wave.c */
extern Wave *create_wave(const char *);
extern int free_wave(Wave **);
/* xlib.c */
extern int create_xlib();
extern int free_xlib();
extern cairo_t *xlib_context();








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	Bool long_out, layers;
} Config;

/* main.c */
extern int die(const char *, ...);
/* config.c */
extern const char *configure(int, const char **);
extern int deconfigure();
/* fft.c */
extern FFT *create_fft(Wave *);
extern int free_fft(FFT **);
/* spectro.c */
extern int create_spectro(FFT *, const char *);
extern int free_spectro();




/* wave.c */
extern Wave *create_wave(const char *);
extern int free_wave(Wave **);
/* xlib.c */
extern int create_xlib();
extern int free_xlib();
extern cairo_t *xlib_context();

Changes to src/spectro.c. 

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#include "fex.h"

#define set_color(x,n)	{	\
	cairo_set_source_rgba(x, conf.col[n].r, conf.col[n].g,	\
			conf.col[n].b, conf.col[n].a);							\
	cairo_set_line_width(x, conf.col[n].w);						\
}













































int img_draw() {
	cairo_surface_t *img;
	img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, spect->fft_w*conf.scale, spect->fft_h*conf.scale * 4);
	cairo_t *ctx;
	ctx = cairo_create(img);
	cairo_scale(ctx,conf.scale,-4.0 * conf.scale);
................................................................................
		cairo_set_source_surface(c,spect->s_points,0,0);
		cairo_paint(c);
	}
	cairo_destroy(c);
	return 0;
}

int create_spectro(FFT *fft, const char *fname) {
	spect = (Spectro *) calloc(1, sizeof(Spectro));
	/* names */
	spect->fname = fname;
	char *c = strrchr(spect->fname,'/');
	if (c && (++c)) spect->name = strdup(c);
	else spect->name = strdup(fname);
	if ( (c=strrchr(spect->name,'.')) ) *c = '\0';
	/* fft */
	spect->fft = fft;
	spect->fft_w = fft->ntime;
	spect->fft_h = fft->nfreq;
	/* set bounds */
	int i;
	for (i = 0; i < spect->fft->nfreq &&
			spect->fft->freq[i] < conf.hipass; i++);
	spect->fft_lo = spect->fft_y = i;
	for (i++; i < spect->fft->nfreq &&
			spect->fft->freq[i] < conf.lopass; i++);
	spect->fft_hi = i;
	spect->fft_h = i - spect->fft_y;
	/* cairo_surfaces */
	spectro_spec();
	spectro_thresh();
	spectro_points();
	/* xlib */
	create_xlib();
	return 0;
}

int free_spectro() {
	cairo_surface_destroy(spect->m_spec);
	cairo_surface_destroy(spect->m_thresh);
	cairo_surface_destroy(spect->s_points);
	free_xlib();
	free(spect->name);
	free(spect);
	return 0;
}

int spectro_spec() {
	if (spect->m_spec) cairo_surface_destroy(spect->m_spec);
	if (spect->a_spec) free(spect->a_spec);
	int i, j, stride;
	stride = cairo_format_stride_for_width(CAIRO_FORMAT_A8, spect->fft_w);
	spect->a_spec = (unsigned char *) calloc(stride,spect->fft_h);
	unsigned char *a = NULL;
	for (j = spect->fft_y; j < spect->fft_h + spect->fft_y; j++) {
		a = spect->a_spec + (j - spect->fft_y) * stride;
		for (i = spect->fft_x; i < spect->fft_w + spect->fft_x; i++, a++) {
			*a = 255  - (unsigned char) 255 * (
					( (spect->fft->amp[i][j] - conf.spect_floor) >= 0) ?
						spect->fft->amp[i][j] / conf.spect_floor : 1);
		}
	}
	spect->m_spec = cairo_image_surface_create_for_data(spect->a_spec,
			CAIRO_FORMAT_A8, spect->fft_w, spect->fft_h, stride);
	return 0;
}

int spectro_thresh() {
	if (spect->m_thresh) cairo_surface_destroy(spect->m_thresh);
	if (spect->a_thresh) free(spect->a_thresh);
	int i, j, stride;
	stride = cairo_format_stride_for_width(CAIRO_FORMAT_A8, spect->fft_w);
	spect->a_thresh = (unsigned char *) calloc(stride, spect->fft_h);
	unsigned char *a = NULL;
	for (j = spect->fft_y; j < spect->fft_h + spect->fft_y; j++) {
		a = spect->a_thresh + (j - spect->fft_y) * stride;
		for (i = spect->fft_x; i < spect->fft_w + spect->fft_x; i++, a++) {
			if (spect->fft->mask[i][j]) *a = 0;
			else if (spect->fft->amp[i][j] > conf.thresh) *a = 255;
			else *a = 0;
		}
	}
	spect->m_thresh = cairo_image_surface_create_for_data(spect->a_thresh,
			CAIRO_FORMAT_A8, spect->fft_w, spect->fft_h, stride);
	return 0;
}

int spectro_points() {
	if (spect->s_points) cairo_surface_destroy(spect->s_points);
	spect->s_points = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
			//spect->fft_w, spect->fft_h);
			spect->fft_w * conf.scale, spect->fft_h * conf.scale);
	cairo_t *p = cairo_create(spect->s_points);
	cairo_t *l = cairo_create(spect->s_points);
................................................................................
	}
	cairo_fill(p);
	cairo_stroke(l);
	cairo_destroy(p);
	cairo_destroy(l);
	return 0;
}

















































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#include "fex.h"

#define set_color(x,n)	{	\
	cairo_set_source_rgba(x, conf.col[n].r, conf.col[n].g,	\
			conf.col[n].b, conf.col[n].a);							\
	cairo_set_line_width(x, conf.col[n].w);						\
}

int create_spectro(FFT *fft, const char *fname) {
	spect = (Spectro *) calloc(1, sizeof(Spectro));
	/* names */
	spect->fname = fname;
	char *c = strrchr(spect->fname,'/');
	if (c && (++c)) spect->name = strdup(c);
	else spect->name = strdup(fname);
	if ( (c=strrchr(spect->name,'.')) ) *c = '\0';
	/* fft */
	spect->fft = fft;
	spect->fft_w = fft->ntime;
	spect->fft_h = fft->nfreq;
	/* set bounds */
	int i;
	for (i = 0; i < spect->fft->nfreq &&
			spect->fft->freq[i] < conf.hipass; i++);
	spect->fft_lo = spect->fft_y = i;
	for (i++; i < spect->fft->nfreq &&
			spect->fft->freq[i] < conf.lopass; i++);
	spect->fft_hi = i;
	spect->fft_h = i - spect->fft_y;
	/* cairo_surfaces */
	spectro_spec();
	spectro_thresh();
	spectro_points();
	/* xlib */
	create_xlib();
	return 0;
}

int free_spectro() {
	cairo_surface_destroy(spect->m_spec);
	cairo_surface_destroy(spect->m_thresh);
	cairo_surface_destroy(spect->s_points);
	free_xlib();
	free(spect->name);
	free(spect);
	return 0;
}





int img_draw() {
	cairo_surface_t *img;
	img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, spect->fft_w*conf.scale, spect->fft_h*conf.scale * 4);
	cairo_t *ctx;
	ctx = cairo_create(img);
	cairo_scale(ctx,conf.scale,-4.0 * conf.scale);
................................................................................
		cairo_set_source_surface(c,spect->s_points,0,0);
		cairo_paint(c);
	}
	cairo_destroy(c);
	return 0;
}

















































































int spectro_points() {
	if (spect->s_points) cairo_surface_destroy(spect->s_points);
	spect->s_points = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
			//spect->fft_w, spect->fft_h);
			spect->fft_w * conf.scale, spect->fft_h * conf.scale);
	cairo_t *p = cairo_create(spect->s_points);
	cairo_t *l = cairo_create(spect->s_points);
................................................................................
	}
	cairo_fill(p);
	cairo_stroke(l);
	cairo_destroy(p);
	cairo_destroy(l);
	return 0;
}

int spectro_spec() {
	if (spect->m_spec) cairo_surface_destroy(spect->m_spec);
	if (spect->a_spec) free(spect->a_spec);
	int i, j, stride;
	stride = cairo_format_stride_for_width(CAIRO_FORMAT_A8, spect->fft_w);
	spect->a_spec = (unsigned char *) calloc(stride,spect->fft_h);
	unsigned char *a = NULL;
	for (j = spect->fft_y; j < spect->fft_h + spect->fft_y; j++) {
		a = spect->a_spec + (j - spect->fft_y) * stride;
		for (i = spect->fft_x; i < spect->fft_w + spect->fft_x; i++, a++) {
			*a = 255  - (unsigned char) 255 * (
					( (spect->fft->amp[i][j] - conf.spect_floor) >= 0) ?
						spect->fft->amp[i][j] / conf.spect_floor : 1);
		}
	}
	spect->m_spec = cairo_image_surface_create_for_data(spect->a_spec,
			CAIRO_FORMAT_A8, spect->fft_w, spect->fft_h, stride);
	return 0;
}

int spectro_thresh() {
	if (spect->m_thresh) cairo_surface_destroy(spect->m_thresh);
	if (spect->a_thresh) free(spect->a_thresh);
	int i, j, stride;
	stride = cairo_format_stride_for_width(CAIRO_FORMAT_A8, spect->fft_w);
	spect->a_thresh = (unsigned char *) calloc(stride, spect->fft_h);
	unsigned char *a = NULL;
	for (j = spect->fft_y; j < spect->fft_h + spect->fft_y; j++) {
		a = spect->a_thresh + (j - spect->fft_y) * stride;
		for (i = spect->fft_x; i < spect->fft_w + spect->fft_x; i++, a++) {
			if (spect->fft->mask[i][j]) *a = 0;
			else if (spect->fft->amp[i][j] > conf.thresh) *a = 255;
			else *a = 0;
		}
	}
	spect->m_thresh = cairo_image_surface_create_for_data(spect->a_thresh,
			CAIRO_FORMAT_A8, spect->fft_w, spect->fft_h, stride);
	return 0;
}

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#define MODE_NULL		0x00
#define MODE_ERASE	0x01
#define MODE_CROP		0x02

#define EVENT_MASK	ExposureMask | ButtonPressMask | KeyPressMask | \
							StructureNotifyMask


extern int img_draw();





static void buttonpress(XEvent *);
static void clientmessage(XEvent *);
static void configurenotify(XEvent *);
static void expose(XEvent *);
static void keypress(XEvent *);
static void motionnotify(XEvent *);
................................................................................
	[ConfigureNotify]		= configurenotify,
	[Expose]					= expose,
	[KeyPress]				= keypress,
	[MotionNotify]			= motionnotify,
};

#include "xlib_toolwin.c"


#define CtrlMask	ControlMask
void buttonpress(XEvent *ev) {
	XButtonEvent *e = &ev->xbutton;
	if (e->window == info->win) info->button(info, e);
	else if (e->state == (ControlMask | ShiftMask)) {
		if (e->button == 4) threshold(0.1);
		else if (e->button == 5) threshold(-0.1);
		else if (e->button == 6) sp_floor(-0.1);
		else if (e->button == 7) sp_floor(0.1);
	}
	else if (e->state == ControlMask) {
		if (e->button == 4) zoom(0.025);
		else if (e->button == 5) zoom(-0.025);
		else if (e->button == 6) return;
		else if (e->button == 7) return;
	}
	else if (e->state == Mod1Mask) {
		if (e->button == 4) eraser_cursor(1,1);
		else if (e->button == 5) eraser_cursor(-1,-1);
		else if (e->button == 6) eraser_cursor(-1,1);
		else if (e->button == 7) eraser_cursor(1,-1);
	}
	else if (e->state == ShiftMask) {
		if (e->button == 4) pt_line(0.2,0);
		else if (e->button == 5) pt_line(-0.2,0);
		else if (e->button == 6) pt_line(0,-0.2);
		else if (e->button == 7) pt_line(0,0.2);
	}
	else if (e->button == 4) move(0,-0.02);
	else if (e->button == 5) move(0,0.02);
	else if (e->button == 6) move(0.02,0);
	else if (e->button == 7) move(-0.02,0);
	else if (mode == MODE_ERASE && e->button == 1) erase(e->x, e->y);
	else if (mode == MODE_ERASE && e->button == 3) erase(-1,-1);
	else if (mode == MODE_CROP && e->button == 1) crop(e->x, e->y);
	while(XCheckMaskEvent(dpy, ButtonPressMask, ev));
}

void clientmessage(XEvent *ev) {
	XClientMessageEvent *e = &ev->xclient;
	if ( (Atom)e->data.l[0] == WM_DELETE_WINDOW ) {
		if (e->window == info->win) {
			info->vis = False;
			XUnmapWindow(dpy, info->win);
		}
		else if (e->window == win) {
			running = False;
		}
	}
}

void configurenotify(XEvent *ev) {
	while (XCheckTypedEvent(dpy,ConfigureNotify, ev));
	XConfigureEvent *e = &ev->xconfigure;
	if (e->window == win) {
		/* The XServer is not storing the new/current values for width +
		 * height.  These must be retrieved directly.
		 * Is this an X11 bug? */
		Window wig;
		int ig;
		unsigned int uig;
		XGetGeometry(dpy, win, &wig, &ig, &ig, &ww, &wh, &uig, &uig);
		//ww = e->width; wh = e->height;
		spectro_draw();
		XSetWindowBackgroundPixmap(dpy, win, buf);
		XClearWindow(dpy,win);
	}
}

void expose(XEvent *ev) {
	XExposeEvent *e = &ev->xexpose;
	if (e->window == info->win) info->draw(info);
	else {
		XSetWindowBackgroundPixmap(dpy, win, buf);
		XClearWindow(dpy,win);
	}
}

void keypress(XEvent *ev) {
	XKeyEvent *e = &ev->xkey;
	KeySym sym = XkbKeycodeToKeysym(dpy, (KeyCode)e->keycode, 0, 0);
	int mod = ((e->state & ~Mod2Mask) & ~LockMask);
	if (mod == (ControlMask | ShiftMask)) {
		if (sym == XK_q) {
			spect->fex = 0;
			running = False;
		}
		if (sym == XK_j || sym == XK_Down) threshold(-0.05);
		else if (sym == XK_k || sym == XK_Up) threshold(0.05);
		else if (sym == XK_h || sym == XK_Left) sp_floor(-0.05);
		else if (sym == XK_l || sym == XK_Right) sp_floor(0.05);
		else if (sym == XK_p) play(0.1666);
	}
	else if (mod == (Mod1Mask | ShiftMask)) {
		if (sym == XK_p) play(0.08333);
	}
	else if (mod == ControlMask) {
		if (sym == XK_q) running = False;
		else if (sym == XK_s) screenshot();
		else if (sym == XK_i) img_draw();
		else if (sym == XK_j || sym == XK_Down) zoom(-0.025);
		else if (sym == XK_k || sym == XK_Up) zoom(0.025);
		else if (sym == XK_h || sym == XK_Left) return;
		else if (sym == XK_l || sym == XK_Right) return;
		else if (sym == XK_p) play(0.33);
	}
	else if (mod == Mod1Mask) {
		if (sym == XK_j || sym == XK_Down) eraser_cursor(-1,-1);
		else if (sym == XK_k || sym == XK_Up) eraser_cursor(1,1);
		else if (sym == XK_h || sym == XK_Left) eraser_cursor(-1,1);
		else if (sym == XK_l || sym == XK_Right) eraser_cursor(1,-1);
		else if (sym == XK_p) play(0.25);
	}
	else if (mod == ShiftMask) {
		if (sym == XK_j || sym == XK_Down) pt_line(-0.2,0);
		else if (sym == XK_k || sym == XK_Up) pt_line(0.2,0);
		else if (sym == XK_h || sym == XK_Left) pt_line(0,-0.2);
		else if (sym == XK_l || sym == XK_Right) pt_line(0,0.2);
		else if (sym == XK_p) play(0.5);
	}
	else if (sym == XK_j || sym == XK_Down) move(0,0.02);
	else if (sym == XK_k || sym == XK_Up) move(0,-0.02);
	else if (sym == XK_h || sym == XK_Left) move(0.02,0);
	else if (sym == XK_l || sym == XK_Right) move(-0.02,0);
	else if (sym == XK_F1) {
		if (fork() == 0)
			execvp(conf.help_cmd[0],(char * const *)conf.help_cmd);
	}
	else if (sym == XK_F2) {
		if ( (info->vis = !info->vis) ) XMapRaised(dpy,info->win);
		else XUnmapWindow(dpy,info->win);
		XFlush(dpy);
	}
	else if (sym == XK_e) {
		//mode = MODE_ERASE & (mode ^= MODE_ERASE);
		mode = (mode & MODE_ERASE ? 0 : MODE_ERASE);
		eraser_cursor(0,0);
		info->draw(info);
	}
	else if (sym == XK_c) {
		//mode = MODE_CROP & (mode ^= MODE_CROP);
		mode = (mode & MODE_CROP ? 0 : MODE_CROP);
		if (!(mode & MODE_CROP)) XDefineCursor(dpy, win, None);
		else XDefineCursor(dpy, win, XCreateFontCursor(dpy, 34));
		info->draw(info);
	}
	else if (sym == XK_Escape) {
		mode = MODE_NULL;
		XDefineCursor(dpy, win, None);
		info->draw(info);
	}
	else if (sym == XK_p) play(1.0);
	else if (sym == XK_t) {
		conf.layers = !conf.layers;
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	}
	else if (sym == XK_u && mode & (MODE_ERASE)) erase(-1,-1);
	while(XCheckMaskEvent(dpy, KeyPressMask, ev));
}

void motionnotify(XEvent *ev) {
	//static int px, py;
	int x = ev->xmotion.x, y = ev->xmotion.y;
	mx = spect->fft_w * x / (xsc * ww) - 1.0 * xoff + spect->fft_x;
	my = spect->fft_h * (1.0 - y / (ysc * wh)) - 1.0 * yoff + spect->fft_y;
	info->draw(info);
	if (mode == MODE_CROP) {
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, x, 0, x, wh);
		XDrawLine(dpy, win, gc, 0, y, ww, y);
	}
}


int crop(int x, int y) {
	int x1 = x, y1 = y, x2, y2, t;
	XCopyArea(dpy, win, buf, gc, 0, 0, ww, wh, 0, 0);
	XEvent e;
	XGrabPointer(dpy, win, True, PointerMotionMask | ButtonPressMask,
			GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
	while (e.type != ButtonPress) {
		XMaskEvent(dpy, PointerMotionMask | ButtonPressMask |
				KeyPressMask, &e);
		if (e.type == KeyPress) break;
		x2 = e.xmotion.x;
		y2 = e.xmotion.y;
		if (x2 > ww) x2 = ww;
		if (y2 > wh) y2 = wh;
		mx = spect->fft_w * x2/(ww*xsc) - 1.0 * xoff + spect->fft_x;
		my = spect->fft_h * (1.0-y2/(wh*ysc)) - 1.0 * yoff + spect->fft_y;
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, x2, 0, x2, wh);
		XDrawLine(dpy, win, gc, 0, y2, ww, y2);
		info_draw(info);
		if (e.type == ButtonPress) break;
		while(XCheckMaskEvent(dpy, PointerMotionMask, &e));
	}
	XUngrabPointer(dpy, CurrentTime);
	if (x2 < x1) { t = x1; x1 = x2; x2 = t; }
	if (y2 > y1) { t = y1; y1 = y2; y2 = t; }
	mode = MODE_NULL;
	info_draw(info);
	if (e.type == KeyPress) {
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		return 0;
	}
	int oldy = spect->fft_y;
	spect->fft_x = spect->fft_w * x1/(ww*xsc) - 1.0*xoff + spect->fft_x;
	spect->fft_y = spect->fft_h*(1.0-y1/(wh*ysc))-1.0*yoff+spect->fft_y;
	spect->fft_w = spect->fft_w * x2/(ww*xsc) - 1.0*xoff - spect->fft_x;
	spect->fft_h = spect->fft_h*(1.0-y2/(wh*ysc))-1.0*yoff +
			oldy - spect->fft_y;
	spectro_spec();
	spectro_thresh();
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

int erase(int x, int y) {
	int x1, x2, y1, y2, i, j;
	double sew = spect->fft_w * ew / (ww * xsc);
	double seh = spect->fft_h * eh / (wh * ysc);
	if (x == -1 && y == -1) { /* UNDO LAST ERASE */
		for (i = 0; i < spect->fft->ntime; i++)
			for (j = 0; j < spect->fft->nfreq; j++)
				spect->fft->mask[i][j] = ( (spect->fft->mask[i][j] >> 7) ?
						(spect->fft->mask[i][j] >> 1) | 0x40 :
						(spect->fft->mask[i][j] >> 1) );
		spectro_points();
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		return 0;
	} /* ELSE START NEW ERASE */
	XEvent e;
	XGrabPointer(dpy, win, True, PointerMotionMask | ButtonReleaseMask,
			GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
	/* rotate bits for 7 undo levels */
	for (i = 0; i < spect->fft->ntime; i++)
		for (j = 0; j < spect->fft->nfreq; j++)
			spect->fft->mask[i][j] = ( (spect->fft->mask[i][j] >> 7) ?
					(spect->fft->mask[i][j] << 1) | 0x40 :
					(spect->fft->mask[i][j] << 1) );
	while (e.type != ButtonRelease) {
		XMaskEvent(dpy, PointerMotionMask | ButtonReleaseMask, &e);
		/* set erase bit mask */
		mx = spect->fft_w*e.xbutton.x/(ww*xsc) - 1.0*xoff + spect->fft_x;
		my = spect->fft_h*(1.0-e.xbutton.y/(wh*ysc)) -1.0*yoff+spect->fft_y;
		x1 = mx - sew / 2.0; y1 = my - seh / 2.0;
		x2 = mx + sew / 2.0; y2 = my + seh / 2.0;
		if (x1 < 0) x1 = 0;
		if (y1 < 0) y1 = 0;
		if (x2 >= spect->fft->ntime) x2 = spect->fft->ntime - 1;
		if (y2 >= spect->fft->nfreq) y2 = spect->fft->nfreq - 1;
		for (j = y1; j <= y2; j++)
			for (i = x1; i <= x2; i++)
				spect->fft->mask[i][j] |= 0x01;
		/* redraw */
		spectro_thresh();
		spectro_points();
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		info_draw(info);
		if (e.type == ButtonRelease) break;
		while(XCheckMaskEvent(dpy, PointerMotionMask, &e));
	}
	XUngrabPointer(dpy, CurrentTime);
	return 0;
}

int eraser_cursor(int w, int h) {
	XUndefineCursor(dpy, win);
	if ( !(mode & MODE_ERASE) ) return 0;
	if ( (ew+=w) < 3 ) ew = 3;
	if ( (eh+=h) < 3 ) eh = 3;
	if ( ew > ww/4 ) ew = ww / 4;
	if ( eh > wh/2 ) eh = wh / 2;
	int i, stride = ew/ 8 + 1;
	char data[stride * eh];
	char mask[stride * eh];
	XColor bg, fg;
	XAllocNamedColor(dpy,DefaultColormap(dpy,scr),e_col[0],&bg,&bg);
	XAllocNamedColor(dpy,DefaultColormap(dpy,scr),e_col[1],&fg,&fg);
	memset(mask, 0xAA, stride * eh);
	memset(data, 0xAA, stride * eh);
	for (i = 0; i < eh; i+= 2) memset(&mask[stride * i], 0x55, stride);
	Pixmap cd = XCreateBitmapFromData(dpy, win, data, ew, eh);
	Pixmap cm = XCreateBitmapFromData(dpy, win, mask, ew, eh);
	Cursor c = XCreatePixmapCursor(dpy, cd, cm, &fg, &bg, ew/2, eh/2);
	XDefineCursor(dpy, win, c);
	XFreePixmap(dpy, cd);
	XFreePixmap(dpy, cm);
	XFlush(dpy);
	return 0;
}

int move(double x, double y) {
	xoff += x / xsc * spect->fft_w; yoff += y / ysc * spect->fft_h;
	if ( yoff > spect->fft_h * (1.0 - 1.0/ysc) )
		yoff = spect->fft_h * (1.0 - 1.0/ysc);
	if ( yoff < 0) yoff = 0;
	if ( xoff < spect->fft_w * (1.0/xsc - 1.0) )
		xoff = spect->fft_w * (1.0/xsc - 1.0);
	if ( xoff > 0) xoff = 0;
	if (x || y) { /* don't redraw for offset checks */
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	}
	return 0;
}

int play(float speed) {
	/* calculate fft coordinates of current view window */
	int tw = spect->fft_w / xsc;
	int th = spect->fft_h / ysc;
	int tx = spect->fft_x - xoff;
	int ty = spect->fft_y - yoff + spect->fft_h - th;
	if (tx + tw >= spect->fft->ntime) tw = spect->fft->ntime - tx - 1;
	if (ty + th >= spect->fft->nfreq) th = spect->fft->nfreq - ty - 1;
	/* get time and frequency values of current view window */
	double _start = spect->fft->time[tx];
	double _end = spect->fft->time[tx+tw];
	double _low = spect->fft->freq[ty];
	double _hi = spect->fft->freq[ty+th];
	double _mid = (_hi+_low)/2.0;
	double _wid = (_hi-_low)/2.0;
	/* fork and play */
	if (!fork()==0) {
		close(ConnectionNumber(dpy));
		char start[12], end[12], mid[12], wid[12], sp[8];
		snprintf(sp,7,"%3f",speed);
		sprintf(start,"=%lf",_start); sprintf(end,"=%lf",_end);
		sprintf(mid,"%lfk",_mid); sprintf(wid,"%lfk",_wid);
		execl("/usr/bin/play", "play", "-q", spect->fname,
				"trim", start, end, "bandpass", mid, wid,
				"speed", sp, NULL);
		perror("Fex Play");
		exit(1);
	}
	/* draw cursor while playing */
	int i, step = 12;
	double dur = _end - _start;
	useconds_t usec = dur * 1000000.0 * step / (double) ww;
	step = speed * step + 0.5;
	for (i = 0; i < ww; i+=step) {
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, i, 0, i, wh);
		XDrawLine(dpy, win, gc, i+step, 0, i+step, wh);
		XFlush(dpy);
		usleep(usec);
	}
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	XFlush(dpy);
	return 0;
}

int pt_line(double p, double l) {
	conf.col[RGBA_POINTS].w += p;
	conf.col[RGBA_LINES].w += l;
	if (conf.col[RGBA_POINTS].w < 0) conf.col[RGBA_POINTS].w = 0.0;
	if (conf.col[RGBA_LINES].w < 0) conf.col[RGBA_LINES].w = 0.0;
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

int screenshot() {
	char fname[256];
	static int n = 0;
	snprintf(fname, 256, "%s-%d.png", spect->name, n++);
	cairo_surface_t *t = cairo_xlib_surface_create(dpy, buf,
			DefaultVisual(dpy,scr), ww, wh);
	cairo_surface_write_to_png(t, fname);
	cairo_surface_destroy(t);
	return 0;
}

int sp_floor(double f) {
	conf.spect_floor += f;
	spectro_spec();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	if (info->vis) info->draw(info);
	return 0;
}

int threshold(double f) {
	conf.thresh += f;
	spectro_thresh();
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	if (info->vis) info->draw(info);
	return 0;
}

int zoom(double f) {
	double px = xsc, py = ysc;
	xsc += f; ysc += f;
	if (xsc < 1.0) xsc = 1.0;
	if (ysc < 1.0) ysc = 1.0;
	xoff += (spect->fft_w/xsc - spect->fft_w/px) / 2.0;
	yoff += (spect->fft_h/py - spect->fft_h/ysc) / 2.0;
	if (f < 0) move(0,0); /* check offsets for bounds */
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

int create_xlib() {
	if (!setlocale(LC_CTYPE,"")) die("unable to set locale");
	if (!XSupportsLocale()) die("unsupported locale");
	if (!XSetLocaleModifiers("")) die("unable to set locale modifiers");
	if ( !(dpy=XOpenDisplay(0x0)) ) die("unable to open display");
	scr = DefaultScreen(dpy);
................................................................................
	XStoreName(dpy, win, "FEX: Frequency Excursion Calculator");
	XClassHint *hint = XAllocClassHint();
	hint->res_name = "FEX";
	hint->res_class = "FEX";
	XSetClassHint(dpy, win, hint);
	WM_DELETE_WINDOW = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
	XSetWMProtocols(dpy, win, &WM_DELETE_WINDOW, 1);
#include "icon.xpm"
Pixmap image, shape;
XWMHints *hints;
XpmCreatePixmapFromData(dpy, win, icon, &image, &shape, NULL);
hints = XAllocWMHints();
hints->flags = IconPixmapHint | IconMaskHint;
hints->icon_pixmap = image;
hints->icon_mask = shape;
XSetWMHints(dpy, win, hints);
XFree(hints);
	/* set up eraser / crop colors */
	sprintf(e_col[0],"#%02hhX%02hhX%02hhX",
		(unsigned char) conf.col[RGBA_ERASE1].r * 255,
		(unsigned char) conf.col[RGBA_ERASE1].g * 255,
		(unsigned char) conf.col[RGBA_ERASE1].b * 255);
	sprintf(e_col[1],"#%02hhX%02hhX%02hhX",
		(unsigned char) conf.col[RGBA_ERASE2].r * 255,








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#define MODE_NULL		0x00
#define MODE_ERASE	0x01
#define MODE_CROP		0x02

#define EVENT_MASK	ExposureMask | ButtonPressMask | KeyPressMask | \
							StructureNotifyMask

/* spectro.c */
extern int img_draw();
extern int spectro_draw();
extern int spectro_points();
extern int spectro_spec();
extern int spectro_thresh();

static void buttonpress(XEvent *);
static void clientmessage(XEvent *);
static void configurenotify(XEvent *);
static void expose(XEvent *);
static void keypress(XEvent *);
static void motionnotify(XEvent *);
................................................................................
	[ConfigureNotify]		= configurenotify,
	[Expose]					= expose,
	[KeyPress]				= keypress,
	[MotionNotify]			= motionnotify,
};

#include "xlib_toolwin.c"

#include "xlib_actions.c"
#include "xlib_events.c"




























































































































































































































































































































































































































int create_xlib() {
	if (!setlocale(LC_CTYPE,"")) die("unable to set locale");
	if (!XSupportsLocale()) die("unsupported locale");
	if (!XSetLocaleModifiers("")) die("unable to set locale modifiers");
	if ( !(dpy=XOpenDisplay(0x0)) ) die("unable to open display");
	scr = DefaultScreen(dpy);
................................................................................
	XStoreName(dpy, win, "FEX: Frequency Excursion Calculator");
	XClassHint *hint = XAllocClassHint();
	hint->res_name = "FEX";
	hint->res_class = "FEX";
	XSetClassHint(dpy, win, hint);
	WM_DELETE_WINDOW = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
	XSetWMProtocols(dpy, win, &WM_DELETE_WINDOW, 1);
	#include "icon.xpm"
	Pixmap image, shape;
	XWMHints *hints;
	XpmCreatePixmapFromData(dpy, win, icon, &image, &shape, NULL);
	hints = XAllocWMHints();
	hints->flags = IconPixmapHint | IconMaskHint;
	hints->icon_pixmap = image;
	hints->icon_mask = shape;
	XSetWMHints(dpy, win, hints);
	XFree(hints);
	/* set up eraser / crop colors */
	sprintf(e_col[0],"#%02hhX%02hhX%02hhX",
		(unsigned char) conf.col[RGBA_ERASE1].r * 255,
		(unsigned char) conf.col[RGBA_ERASE1].g * 255,
		(unsigned char) conf.col[RGBA_ERASE1].b * 255);
	sprintf(e_col[1],"#%02hhX%02hhX%02hhX",
		(unsigned char) conf.col[RGBA_ERASE2].r * 255,

Added src/xlib_actions.c. 













































































































































































































































































































































































































































































































































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/**********************************************************************\
* FEX - The Frequency Excursion Calculator
*
* Author: Jesse McClure, copyright 2013-2014
* License: GPL3
*
*    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 3 of the
*    License, or (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful, but
*    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, see
*    <http://www.gnu.org/licenses/>.
*
\**********************************************************************/


int crop(int x, int y) {
	int x1 = x, y1 = y, x2, y2, t;
	XCopyArea(dpy, win, buf, gc, 0, 0, ww, wh, 0, 0);
	XEvent e;
	XGrabPointer(dpy, win, True, PointerMotionMask | ButtonPressMask,
			GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
	while (e.type != ButtonPress) {
		XMaskEvent(dpy, PointerMotionMask | ButtonPressMask |
				KeyPressMask, &e);
		if (e.type == KeyPress) break;
		x2 = e.xmotion.x;
		y2 = e.xmotion.y;
		if (x2 > ww) x2 = ww;
		if (y2 > wh) y2 = wh;
		mx = spect->fft_w * x2/(ww*xsc) - 1.0 * xoff + spect->fft_x;
		my = spect->fft_h * (1.0-y2/(wh*ysc)) - 1.0 * yoff + spect->fft_y;
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, x2, 0, x2, wh);
		XDrawLine(dpy, win, gc, 0, y2, ww, y2);
		info_draw(info);
		if (e.type == ButtonPress) break;
		while(XCheckMaskEvent(dpy, PointerMotionMask, &e));
	}
	XUngrabPointer(dpy, CurrentTime);
	if (x2 < x1) { t = x1; x1 = x2; x2 = t; }
	if (y2 > y1) { t = y1; y1 = y2; y2 = t; }
	mode = MODE_NULL;
	info_draw(info);
	if (e.type == KeyPress) {
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		return 0;
	}
	int oldy = spect->fft_y;
	spect->fft_x = spect->fft_w * x1/(ww*xsc) - 1.0*xoff + spect->fft_x;
	spect->fft_y = spect->fft_h*(1.0-y1/(wh*ysc))-1.0*yoff+spect->fft_y;
	spect->fft_w = spect->fft_w * x2/(ww*xsc) - 1.0*xoff - spect->fft_x;
	spect->fft_h = spect->fft_h*(1.0-y2/(wh*ysc))-1.0*yoff +
			oldy - spect->fft_y;
	spectro_spec();
	spectro_thresh();
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

int erase(int x, int y) {
	int x1, x2, y1, y2, i, j;
	double sew = spect->fft_w * ew / (ww * xsc);
	double seh = spect->fft_h * eh / (wh * ysc);
	if (x == -1 && y == -1) { /* UNDO LAST ERASE */
		for (i = 0; i < spect->fft->ntime; i++)
			for (j = 0; j < spect->fft->nfreq; j++)
				spect->fft->mask[i][j] = ( (spect->fft->mask[i][j] >> 7) ?
						(spect->fft->mask[i][j] >> 1) | 0x40 :
						(spect->fft->mask[i][j] >> 1) );
		spectro_points();
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		return 0;
	} /* ELSE START NEW ERASE */
	XEvent e;
	XGrabPointer(dpy, win, True, PointerMotionMask | ButtonReleaseMask,
			GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
	/* rotate bits for 7 undo levels */
	for (i = 0; i < spect->fft->ntime; i++)
		for (j = 0; j < spect->fft->nfreq; j++)
			spect->fft->mask[i][j] = ( (spect->fft->mask[i][j] >> 7) ?
					(spect->fft->mask[i][j] << 1) | 0x40 :
					(spect->fft->mask[i][j] << 1) );
	while (e.type != ButtonRelease) {
		XMaskEvent(dpy, PointerMotionMask | ButtonReleaseMask, &e);
		/* set erase bit mask */
		mx = spect->fft_w*e.xbutton.x/(ww*xsc) - 1.0*xoff + spect->fft_x;
		my = spect->fft_h*(1.0-e.xbutton.y/(wh*ysc)) -1.0*yoff+spect->fft_y;
		x1 = mx - sew / 2.0; y1 = my - seh / 2.0;
		x2 = mx + sew / 2.0; y2 = my + seh / 2.0;
		if (x1 < 0) x1 = 0;
		if (y1 < 0) y1 = 0;
		if (x2 >= spect->fft->ntime) x2 = spect->fft->ntime - 1;
		if (y2 >= spect->fft->nfreq) y2 = spect->fft->nfreq - 1;
		for (j = y1; j <= y2; j++)
			for (i = x1; i <= x2; i++)
				spect->fft->mask[i][j] |= 0x01;
		/* redraw */
		spectro_thresh();
		spectro_points();
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		info_draw(info);
		if (e.type == ButtonRelease) break;
		while(XCheckMaskEvent(dpy, PointerMotionMask, &e));
	}
	XUngrabPointer(dpy, CurrentTime);
	return 0;
}

int eraser_cursor(int w, int h) {
	XUndefineCursor(dpy, win);
	if ( !(mode & MODE_ERASE) ) return 0;
	if ( (ew+=w) < 3 ) ew = 3;
	if ( (eh+=h) < 3 ) eh = 3;
	if ( ew > ww/4 ) ew = ww / 4;
	if ( eh > wh/2 ) eh = wh / 2;
	int i, stride = ew/ 8 + 1;
	char data[stride * eh];
	char mask[stride * eh];
	XColor bg, fg;
	XAllocNamedColor(dpy,DefaultColormap(dpy,scr),e_col[0],&bg,&bg);
	XAllocNamedColor(dpy,DefaultColormap(dpy,scr),e_col[1],&fg,&fg);
	memset(mask, 0xAA, stride * eh);
	memset(data, 0xAA, stride * eh);
	for (i = 0; i < eh; i+= 2) memset(&mask[stride * i], 0x55, stride);
	Pixmap cd = XCreateBitmapFromData(dpy, win, data, ew, eh);
	Pixmap cm = XCreateBitmapFromData(dpy, win, mask, ew, eh);
	Cursor c = XCreatePixmapCursor(dpy, cd, cm, &fg, &bg, ew/2, eh/2);
	XDefineCursor(dpy, win, c);
	XFreePixmap(dpy, cd);
	XFreePixmap(dpy, cm);
	XFlush(dpy);
	return 0;
}

int move(double x, double y) {
	xoff += x / xsc * spect->fft_w; yoff += y / ysc * spect->fft_h;
	if ( yoff > spect->fft_h * (1.0 - 1.0/ysc) )
		yoff = spect->fft_h * (1.0 - 1.0/ysc);
	if ( yoff < 0) yoff = 0;
	if ( xoff < spect->fft_w * (1.0/xsc - 1.0) )
		xoff = spect->fft_w * (1.0/xsc - 1.0);
	if ( xoff > 0) xoff = 0;
	if (x || y) { /* don't redraw for offset checks */
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	}
	return 0;
}

int play(float speed) {
	/* calculate fft coordinates of current view window */
	int tw = spect->fft_w / xsc;
	int th = spect->fft_h / ysc;
	int tx = spect->fft_x - xoff;
	int ty = spect->fft_y - yoff + spect->fft_h - th;
	if (tx + tw >= spect->fft->ntime) tw = spect->fft->ntime - tx - 1;
	if (ty + th >= spect->fft->nfreq) th = spect->fft->nfreq - ty - 1;
	/* get time and frequency values of current view window */
	double _start = spect->fft->time[tx];
	double _end = spect->fft->time[tx+tw];
	double _low = spect->fft->freq[ty];
	double _hi = spect->fft->freq[ty+th];
	double _mid = (_hi+_low)/2.0;
	double _wid = (_hi-_low)/2.0;
	/* fork and play */
	if (!fork()==0) {
		close(ConnectionNumber(dpy));
		char start[12], end[12], mid[12], wid[12], sp[8];
		snprintf(sp,7,"%3f",speed);
		sprintf(start,"=%lf",_start); sprintf(end,"=%lf",_end);
		sprintf(mid,"%lfk",_mid); sprintf(wid,"%lfk",_wid);
		execl("/usr/bin/play", "play", "-q", spect->fname,
				"trim", start, end, "bandpass", mid, wid,
				"speed", sp, NULL);
		perror("Fex Play");
		exit(1);
	}
	/* draw cursor while playing */
	int i, step = 12;
	double dur = _end - _start;
	useconds_t usec = dur * 1000000.0 * step / (double) ww;
	step = speed * step + 0.5;
	for (i = 0; i < ww; i+=step) {
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, i, 0, i, wh);
		XDrawLine(dpy, win, gc, i+step, 0, i+step, wh);
		XFlush(dpy);
		usleep(usec);
	}
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	XFlush(dpy);
	return 0;
}

int pt_line(double p, double l) {
	conf.col[RGBA_POINTS].w += p;
	conf.col[RGBA_LINES].w += l;
	if (conf.col[RGBA_POINTS].w < 0) conf.col[RGBA_POINTS].w = 0.0;
	if (conf.col[RGBA_LINES].w < 0) conf.col[RGBA_LINES].w = 0.0;
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

int screenshot() {
	char fname[256];
	static int n = 0;
	snprintf(fname, 256, "%s-%d.png", spect->name, n++);
	cairo_surface_t *t = cairo_xlib_surface_create(dpy, buf,
			DefaultVisual(dpy,scr), ww, wh);
	cairo_surface_write_to_png(t, fname);
	cairo_surface_destroy(t);
	return 0;
}

int sp_floor(double f) {
	conf.spect_floor += f;
	spectro_spec();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	if (info->vis) info->draw(info);
	return 0;
}

int threshold(double f) {
	conf.thresh += f;
	spectro_thresh();
	spectro_points();
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	if (info->vis) info->draw(info);
	return 0;
}

int zoom(double f) {
	double px = xsc, py = ysc;
	xsc += f; ysc += f;
	if (xsc < 1.0) xsc = 1.0;
	if (ysc < 1.0) ysc = 1.0;
	xoff += (spect->fft_w/xsc - spect->fft_w/px) / 2.0;
	yoff += (spect->fft_h/py - spect->fft_h/ysc) / 2.0;
	if (f < 0) move(0,0); /* check offsets for bounds */
	spectro_draw();
	XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	return 0;
}

Added src/xlib_events.c. 













































































































































































































































































































































































































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/**********************************************************************\
* FEX - The Frequency Excursion Calculator
*
* Author: Jesse McClure, copyright 2013-2014
* License: GPL3
*
*    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 3 of the
*    License, or (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful, but
*    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, see
*    <http://www.gnu.org/licenses/>.
*
\**********************************************************************/


#define CtrlMask	ControlMask
void buttonpress(XEvent *ev) {
	XButtonEvent *e = &ev->xbutton;
	if (e->window == info->win) info->button(info, e);
	else if (e->state == (ControlMask | ShiftMask)) {
		if (e->button == 4) threshold(0.1);
		else if (e->button == 5) threshold(-0.1);
		else if (e->button == 6) sp_floor(-0.1);
		else if (e->button == 7) sp_floor(0.1);
	}
	else if (e->state == ControlMask) {
		if (e->button == 4) zoom(0.025);
		else if (e->button == 5) zoom(-0.025);
		else if (e->button == 6) return;
		else if (e->button == 7) return;
	}
	else if (e->state == Mod1Mask) {
		if (e->button == 4) eraser_cursor(1,1);
		else if (e->button == 5) eraser_cursor(-1,-1);
		else if (e->button == 6) eraser_cursor(-1,1);
		else if (e->button == 7) eraser_cursor(1,-1);
	}
	else if (e->state == ShiftMask) {
		if (e->button == 4) pt_line(0.2,0);
		else if (e->button == 5) pt_line(-0.2,0);
		else if (e->button == 6) pt_line(0,-0.2);
		else if (e->button == 7) pt_line(0,0.2);
	}
	else if (e->button == 4) move(0,-0.02);
	else if (e->button == 5) move(0,0.02);
	else if (e->button == 6) move(0.02,0);
	else if (e->button == 7) move(-0.02,0);
	else if (mode == MODE_ERASE && e->button == 1) erase(e->x, e->y);
	else if (mode == MODE_ERASE && e->button == 3) erase(-1,-1);
	else if (mode == MODE_CROP && e->button == 1) crop(e->x, e->y);
	while(XCheckMaskEvent(dpy, ButtonPressMask, ev));
}

void clientmessage(XEvent *ev) {
	XClientMessageEvent *e = &ev->xclient;
	if ( (Atom)e->data.l[0] == WM_DELETE_WINDOW ) {
		if (e->window == info->win) {
			info->vis = False;
			XUnmapWindow(dpy, info->win);
		}
		else if (e->window == win) {
			running = False;
		}
	}
}

void configurenotify(XEvent *ev) {
	while (XCheckTypedEvent(dpy,ConfigureNotify, ev));
	XConfigureEvent *e = &ev->xconfigure;
	if (e->window == win) {
		/* The XServer is not storing the new/current values for width +
		 * height.  These must be retrieved directly.
		 * Is this an X11 bug? */
		Window wig;
		int ig;
		unsigned int uig;
		XGetGeometry(dpy, win, &wig, &ig, &ig, &ww, &wh, &uig, &uig);
		//ww = e->width; wh = e->height;
		spectro_draw();
		XSetWindowBackgroundPixmap(dpy, win, buf);
		XClearWindow(dpy,win);
	}
}

void expose(XEvent *ev) {
	XExposeEvent *e = &ev->xexpose;
	if (e->window == info->win) info->draw(info);
	else {
		XSetWindowBackgroundPixmap(dpy, win, buf);
		XClearWindow(dpy,win);
	}
}

void keypress(XEvent *ev) {
	XKeyEvent *e = &ev->xkey;
	KeySym sym = XkbKeycodeToKeysym(dpy, (KeyCode)e->keycode, 0, 0);
	int mod = ((e->state & ~Mod2Mask) & ~LockMask);
	if (mod == (ControlMask | ShiftMask)) {
		if (sym == XK_q) {
			spect->fex = 0;
			running = False;
		}
		if (sym == XK_j || sym == XK_Down) threshold(-0.05);
		else if (sym == XK_k || sym == XK_Up) threshold(0.05);
		else if (sym == XK_h || sym == XK_Left) sp_floor(-0.05);
		else if (sym == XK_l || sym == XK_Right) sp_floor(0.05);
		else if (sym == XK_p) play(0.1666);
	}
	else if (mod == (Mod1Mask | ShiftMask)) {
		if (sym == XK_p) play(0.08333);
	}
	else if (mod == ControlMask) {
		if (sym == XK_q) running = False;
		else if (sym == XK_s) screenshot();
		else if (sym == XK_i) img_draw();
		else if (sym == XK_j || sym == XK_Down) zoom(-0.025);
		else if (sym == XK_k || sym == XK_Up) zoom(0.025);
		else if (sym == XK_h || sym == XK_Left) return;
		else if (sym == XK_l || sym == XK_Right) return;
		else if (sym == XK_p) play(0.33);
	}
	else if (mod == Mod1Mask) {
		if (sym == XK_j || sym == XK_Down) eraser_cursor(-1,-1);
		else if (sym == XK_k || sym == XK_Up) eraser_cursor(1,1);
		else if (sym == XK_h || sym == XK_Left) eraser_cursor(-1,1);
		else if (sym == XK_l || sym == XK_Right) eraser_cursor(1,-1);
		else if (sym == XK_p) play(0.25);
	}
	else if (mod == ShiftMask) {
		if (sym == XK_j || sym == XK_Down) pt_line(-0.2,0);
		else if (sym == XK_k || sym == XK_Up) pt_line(0.2,0);
		else if (sym == XK_h || sym == XK_Left) pt_line(0,-0.2);
		else if (sym == XK_l || sym == XK_Right) pt_line(0,0.2);
		else if (sym == XK_p) play(0.5);
	}
	else if (sym == XK_j || sym == XK_Down) move(0,0.02);
	else if (sym == XK_k || sym == XK_Up) move(0,-0.02);
	else if (sym == XK_h || sym == XK_Left) move(0.02,0);
	else if (sym == XK_l || sym == XK_Right) move(-0.02,0);
	else if (sym == XK_F1) {
		if (fork() == 0)
			execvp(conf.help_cmd[0],(char * const *)conf.help_cmd);
	}
	else if (sym == XK_F2) {
		if ( (info->vis = !info->vis) ) XMapRaised(dpy,info->win);
		else XUnmapWindow(dpy,info->win);
		XFlush(dpy);
	}
	else if (sym == XK_e) {
		//mode = MODE_ERASE & (mode ^= MODE_ERASE);
		mode = (mode & MODE_ERASE ? 0 : MODE_ERASE);
		eraser_cursor(0,0);
		info->draw(info);
	}
	else if (sym == XK_c) {
		//mode = MODE_CROP & (mode ^= MODE_CROP);
		mode = (mode & MODE_CROP ? 0 : MODE_CROP);
		if (!(mode & MODE_CROP)) XDefineCursor(dpy, win, None);
		else XDefineCursor(dpy, win, XCreateFontCursor(dpy, 34));
		info->draw(info);
	}
	else if (sym == XK_Escape) {
		mode = MODE_NULL;
		XDefineCursor(dpy, win, None);
		info->draw(info);
	}
	else if (sym == XK_p) play(1.0);
	else if (sym == XK_t) {
		conf.layers = !conf.layers;
		spectro_draw();
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
	}
	else if (sym == XK_u && mode & (MODE_ERASE)) erase(-1,-1);
	while(XCheckMaskEvent(dpy, KeyPressMask, ev));
}

void motionnotify(XEvent *ev) {
	//static int px, py;
	int x = ev->xmotion.x, y = ev->xmotion.y;
	mx = spect->fft_w * x / (xsc * ww) - 1.0 * xoff + spect->fft_x;
	my = spect->fft_h * (1.0 - y / (ysc * wh)) - 1.0 * yoff + spect->fft_y;
	info->draw(info);
	if (mode == MODE_CROP) {
		XCopyArea(dpy, buf, win, gc, 0, 0, ww, wh, 0, 0);
		XDrawLine(dpy, win, gc, x, 0, x, wh);
		XDrawLine(dpy, win, gc, 0, y, ww, y);
	}
}