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/* GNUPLOT - mouse.c */

/* driver independent mouse part. */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or without fee is hereby granted,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

* AUTHORS

* Original Software (October 1999 - January 2000):

* Pieter-Tjerk de Boer <ptdeboer@cs.utwente.nl>

* Petr Mikulik <mikulik@physics.muni.cz>

* Johannes Zellner <johannes@zellner.org>

#include "syscfg.h"

#include "stdfn.h"

#include "gp_types.h"

#ifdef USE_MOUSE /* comment out whole file, otherwise... */

#include "eval.h" /* for mouse_readout_function */

#include "mouse.h"

#include "pm3d.h"

#include "alloc.h"

#include "axis.h"

#include "command.h"

#include "datafile.h"

#include "gadgets.h"

#include "gp_time.h"

#include "graphics.h"

#include "graph3d.h"

#include "plot3d.h"

#include "readline.h"

#include "term_api.h"

#include "util3d.h"

#include "hidden3d.h"

#include "plot.h" /* for interactive */

#ifdef USE_WATCHPOINTS

# include "watch.h"

#endif

#ifdef _WIN32

# include "win/winmain.h"

#endif

#ifdef OS2

#include <os2.h>

#include "os2/pm_msgs.h"

#endif

/********************** variables ***********************************************************/

char mouse_fmt_default[] = "% #g";

udft_entry mouse_readout_function = {NULL, "mouse_readout_function", NULL, NULL, 2 /*dummy_values[]*/};

long mouse_mode = MOUSE_COORDINATES_REAL;

char* mouse_alt_string = (char*) 0;

mouse_setting_t default_mouse_setting = DEFAULT_MOUSE_SETTING;

mouse_setting_t mouse_setting = DEFAULT_MOUSE_SETTING;

/* the following table must match exactly the

* enum's of GP_ in mousecmn.h and end with a NULL pointer!

static char* special_keys[] = {

"GP_FIRST_KEY", /* keep this dummy there */

"Linefeed",

"Clear",

"Pause",

"Scroll_Lock",

"Sys_Req",

"Insert",

"Home",

"Left",

"Up",

"Right",

"Down",

"PageUp",

"PageDown",

"End",

"Begin",

"KP_Space",

"KP_Tab",

"KP_F1",

"KP_F2",

"KP_F3",

"KP_F4",

/* see KP_0 - KP_9 */

"KP_Insert",

"KP_End",

"KP_Down",

"KP_PageDown",

"KP_Left",

"KP_Begin",

"KP_Right",

"KP_Home",

"KP_Up",

"KP_PageUp",

"KP_Delete",

"KP_Equal",

"KP_Multiply",

"KP_Add",

"KP_Separator",

"KP_Subtract",

"KP_Decimal",

"KP_Divide",

"KP_0",

"KP_1",

"KP_2",

"KP_3",

"KP_4",

"KP_5",

"KP_6",

"KP_7",

"KP_8",

"KP_9",

"F1",

"F2",

"F3",

"F4",

"F5",

"F6",

"F7",

"F8",

"F9",

"F10",

"F11",

"F12",

"Close",

"Button1",

"Button2",

"Button3",

"GP_LAST_KEY",

(char*) 0 /* must be the last line */

};

/* "usual well-known" keycodes, i.e. those not listed in special_keys in mouse.h

static const struct gen_table usual_special_keys[] =

{

{ "BackSpace", GP_BackSpace},

{ "Tab", GP_Tab},

{ "KP_Enter", GP_KP_Enter},

{ "Return", GP_Return},

{ "Escape", GP_Escape},

{ "Delete", GP_Delete},

{ NULL, 0}

};

/* the status of the shift, ctrl and alt keys

static int modifier_mask = 0;

/* Structure for the ruler: on/off, position,...

static struct {

TBOOLEAN on;

double x, y, x2, y2; /* ruler position in real units of the graph */

long px, py; /* ruler position in the viewport units */

} ruler = {

FALSE, 0, 0, 0, 0, 0, 0

};

/* the coordinates of the mouse cursor in gnuplot's internal coordinate system

static int mouse_x = -1, mouse_y = -1;

/* the "real" coordinates of the mouse cursor, i.e., in the user's coordinate

* system(s)

static double real_x, real_y, real_x2, real_y2;

/* status of buttons; button i corresponds to bit (1<<i) of this variable

static int button = 0;

/* variables for setting the zoom region:

/* flag, TRUE while user is outlining the zoom region */

static TBOOLEAN setting_zoom_region = FALSE;

/* coordinates of the first corner of the zoom region, in the internal

* coordinate system */

static int setting_zoom_x, setting_zoom_y;

/* variables for changing the 3D view:

/* do we allow motion to result in a replot right now? */

TBOOLEAN allowmotion = TRUE; /* used by pm.trm, too */

/* did we already postpone a replot because allowmotion was FALSE ? */

static TBOOLEAN needreplot = FALSE;

/* mouse position when dragging started */

static int start_x, start_y;

/* ButtonPress sets this to 0, ButtonMotion to 1 */

static int motion = 0;

/* values for rot_x and rot_z corresponding to zero position of mouse */

static float zero_rot_x, zero_rot_z;

/* bind related stuff */

typedef struct bind_t {

struct bind_t *prev;

int key;

char modifier;

char *command;

char *(*builtin) (struct gp_event_t * ge);

TBOOLEAN allwindows;

struct bind_t *next;

} bind_t;

static bind_t *bindings = (bind_t *) 0;

static const int NO_KEY = -1;

static TBOOLEAN trap_release = FALSE;

* event -> name translation for debugging

const char* GE_evt_name(int type)

{

#define GE_EVT_NAME(name) case name: return #name;

switch(type)

{

GE_EVT_LIST(GE_EVT_NAME);

default: ;

}

return "GE_UNKNOWN";

}

/* forward declarations */

static void alert(void);

static void MousePosToGraphPosReal(int xx, int yy, double *x, double *y, double *x2, double *y2);

static char *xy_format(void);

static char *zoombox_format(void);

static char *GetAnnotateString(char *s, double x, double y, int mode, char *fmt);

static char *xDateTimeFormat(double x, char *b, int mode);

static void GetRulerString(char *p, double x, double y);

static void apply_zoom(struct t_zoom * z);

static void do_zoom(double xmin, double ymin, double x2min,

double y2min, double xmax, double ymax, double x2max, double y2max);

static void ZoomNext(void);

static void ZoomPrevious(void);

static void ZoomUnzoom(void);

static void incr_mousemode(const int amount);

static void UpdateStatuslineWithMouseSetting(mouse_setting_t * ms);

static bind_t * get_binding(struct gp_event_t * ge, TBOOLEAN current);

static void event_keypress(struct gp_event_t * ge, TBOOLEAN current);

static void ChangeView(int x, int z);

static void ChangeAzimuth(int x);

static void event_buttonpress(struct gp_event_t * ge);

static void event_buttonrelease(struct gp_event_t * ge);

static void event_motion(struct gp_event_t * ge);

static void event_modifier(struct gp_event_t * ge);

static void do_save_3dplot(struct surface_points *, int, REPLOT_TYPE);

static void load_mouse_variables(double, double, TBOOLEAN, int);

static void do_zoom_in_around_mouse(void);

static void do_zoom_out_around_mouse(void);

static void do_zoom_in_X(void);

static void do_zoom_out_X(void);

static void do_zoom_scroll_up(void);

static void do_zoom_scroll_down(void);

static void do_zoom_scroll_left(void);

static void do_zoom_scroll_right(void);

/* builtins */

static char *builtin_autoscale(struct gp_event_t * ge);

static char *builtin_toggle_border(struct gp_event_t * ge);

static char *builtin_replot(struct gp_event_t * ge);

static char *builtin_toggle_grid(struct gp_event_t * ge);

static char *builtin_help(struct gp_event_t * ge);

static char *builtin_set_plots_visible(struct gp_event_t * ge);

static char *builtin_set_plots_invisible(struct gp_event_t * ge);

static char *builtin_invert_plot_visibilities(struct gp_event_t * ge);

static char *builtin_toggle_log(struct gp_event_t * ge);

static char *builtin_nearest_log(struct gp_event_t * ge);

static char *builtin_toggle_mouse(struct gp_event_t * ge);

static char *builtin_toggle_ruler(struct gp_event_t * ge);

static char *builtin_decrement_mousemode(struct gp_event_t * ge);

static char *builtin_increment_mousemode(struct gp_event_t * ge);

static char *builtin_toggle_polardistance(struct gp_event_t * ge);

static char *builtin_toggle_verbose(struct gp_event_t * ge);

static char *builtin_toggle_ratio(struct gp_event_t * ge);

static char *builtin_zoom_next(struct gp_event_t * ge);

static char *builtin_zoom_previous(struct gp_event_t * ge);

static char *builtin_unzoom(struct gp_event_t * ge);

static char *builtin_rotate_right(struct gp_event_t * ge);

static char *builtin_rotate_up(struct gp_event_t * ge);

static char *builtin_rotate_left(struct gp_event_t * ge);

static char *builtin_rotate_down(struct gp_event_t * ge);

static char *builtin_azimuth_left(struct gp_event_t * ge);

static char *builtin_azimuth_right(struct gp_event_t * ge);

static char *builtin_cancel_zoom(struct gp_event_t * ge);

static char *builtin_zoom_in_around_mouse(struct gp_event_t * ge);

static char *builtin_zoom_out_around_mouse(struct gp_event_t * ge);

#if (0) /* Not currently used */

static char *builtin_zoom_scroll_left(struct gp_event_t * ge);

static char *builtin_zoom_scroll_right(struct gp_event_t * ge);

static char *builtin_zoom_scroll_up(struct gp_event_t * ge);

static char *builtin_zoom_scroll_down(struct gp_event_t * ge);

static char *builtin_zoom_in_X(struct gp_event_t * ge);

static char *builtin_zoom_out_X(struct gp_event_t * ge);

#endif

/* prototypes for bind stuff

* which are used only here. */

static void bind_install_default_bindings(void);

static void bind_clear(bind_t * b);

static int lookup_key(char *ptr, int *len);

static int bind_scan_lhs(bind_t * out, const char *in);

static char *bind_fmt_lhs(const bind_t * in);

static int bind_matches(const bind_t * a, const bind_t * b);

static void bind_display_one(bind_t * ptr);

static void bind_display(char *lhs);

static void bind_all(char *lhs);

static void bind_remove(bind_t * b);

static void bind_append(char *lhs, char *rhs, char *(*builtin) (struct gp_event_t * ge));

static void recalc_ruler_pos(void);

static void turn_ruler_off(void);

static int nearest_label_tag(int x, int y);

static void remove_label(int x, int y);

static void put_label(char *label, double x, double y);

/********* functions ********************************************/

/* produce a beep */

static void

alert()

{

# ifdef OS2

DosBeep(444, 111);

# else

# ifdef HAVE_LIBREADLINE

# if !defined(MISSING_RL_DING)

rl_ding();

# endif

fflush(rl_outstream);

# else

fprintf(stderr, "\a");

# endif

}

# ifndef HAVE_STPCPY

/* handy function for composing strings; note: some platforms may

* already provide it, how should we handle that? autoconf? -- ptdb */

char *

stpcpy(char *s, const char *p)

{

strcpy(s, p);

return s + strlen(p);

}

# endif

* Transform mouse coordinates to graph coordinates

static void

MousePosToGraphPosReal(int xx, int yy, double *x, double *y, double *x2, double *y2)

{

AXIS *secondary;

if (is_3d_plot) {

/* for 3D plots, we treat the mouse position as if it is

* in the bottom plane, i.e., the plane of the x and y axis */

/* note: at present, this projection is only correct if

* surface_rot_z is a multiple of 90 degrees! */

/* HBB 20010522: added protection against division by zero

* for cases like 'set view 90,0' */

xx -= axis3d_o_x;

yy -= axis3d_o_y;

if (abs(axis3d_x_dx) > abs(axis3d_x_dy)) {

*x = axis_array[FIRST_X_AXIS].min

+ ((double) xx) / axis3d_x_dx * (axis_array[FIRST_X_AXIS].max -

axis_array[FIRST_X_AXIS].min);

} else if (axis3d_x_dy != 0) {

*x = axis_array[FIRST_X_AXIS].min

+ ((double) yy) / axis3d_x_dy * (axis_array[FIRST_X_AXIS].max -

axis_array[FIRST_X_AXIS].min);

} else {

/* both diffs are zero (x axis points into the screen */

*x = VERYLARGE;

}

if (abs(axis3d_y_dx) > abs(axis3d_y_dy)) {

*y = axis_array[FIRST_Y_AXIS].min

+ ((double) xx) / axis3d_y_dx * (axis_array[FIRST_Y_AXIS].max -

axis_array[FIRST_Y_AXIS].min);

} else if (axis3d_y_dy != 0) {

if (splot_map)

*y = axis_array[FIRST_Y_AXIS].max

+ ((double) yy) / axis3d_y_dy * (axis_array[FIRST_Y_AXIS].min -

axis_array[FIRST_Y_AXIS].max);

else

*y = axis_array[FIRST_Y_AXIS].min

+ ((double) yy) / axis3d_y_dy * (axis_array[FIRST_Y_AXIS].max -

axis_array[FIRST_Y_AXIS].min);

} else {

/* both diffs are zero (y axis points into the screen */

*y = VERYLARGE;

}

*x2 = *y2 = VERYLARGE; /* protection */

return;

}

/* 2D plot */

if (plot_bounds.xright == plot_bounds.xleft)

*x = *x2 = VERYLARGE; /* protection */

else {

*x = axis_mapback(&axis_array[FIRST_X_AXIS], xx);

*x2 = axis_mapback(&axis_array[SECOND_X_AXIS], xx);

}

if (plot_bounds.ytop == plot_bounds.ybot)

*y = *y2 = VERYLARGE; /* protection */

else {

*y = axis_mapback(&axis_array[FIRST_Y_AXIS], yy);

*y2 = axis_mapback(&axis_array[SECOND_Y_AXIS], yy);

}

FPRINTF((stderr, "POS: xx=%i, yy=%i => x=%g y=%g\n", xx, yy, *x, *y));

/* If x2 or y2 is linked to a primary axis via mapping function, apply it now */

/* FIXME: this triggers on both linked x1/x2 and on nonlinear x2 */

secondary = &axis_array[SECOND_X_AXIS];

if (nonlinear(secondary))

*x2 = eval_link_function(secondary, *x);

secondary = &axis_array[SECOND_Y_AXIS];

if (nonlinear(secondary))

*y2 = eval_link_function(secondary, *y);

/* If x or y is linked to a (hidden) primary axis, it's a bit more complicated */

secondary = &axis_array[FIRST_X_AXIS];

if (secondary->linked_to_primary

&& secondary->linked_to_primary->index == -FIRST_X_AXIS) {

*x = axis_mapback(secondary->linked_to_primary, xx);

*x = eval_link_function(secondary, *x);

}

secondary = &axis_array[FIRST_Y_AXIS];

if (secondary->linked_to_primary

&& secondary->linked_to_primary->index == -FIRST_Y_AXIS) {

*y = axis_mapback(secondary->linked_to_primary, yy);

*y = eval_link_function(secondary, *y);

}

secondary = &axis_array[SECOND_X_AXIS];

if (secondary->linked_to_primary

&& secondary->linked_to_primary->index == -SECOND_X_AXIS) {

*x2 = axis_mapback(secondary->linked_to_primary, xx);

*x2 = eval_link_function(secondary, *x2);

}

secondary = &axis_array[SECOND_Y_AXIS];

if (secondary->linked_to_primary

&& secondary->linked_to_primary->index == -SECOND_Y_AXIS) {

*y2 = axis_mapback(secondary->linked_to_primary, yy);

*y2 = eval_link_function(secondary, *y2);

}

static char *

xy_format()

{

static char format[64];

format[0] = NUL;

strncat(format, mouse_setting.fmt, 30);

strncat(format, ", ", 3);

strncat(format, mouse_setting.fmt, 30);

return format;

}

static char *

zoombox_format()

{

static char format[64];

format[0] = NUL;

strncat(format, mouse_setting.fmt, 30);

strncat(format, "\r", 2);

strncat(format, mouse_setting.fmt, 30);

return format;

}

/* formats the information for an annotation (middle mouse button clicked)

static char *

GetAnnotateString(char *s, double x, double y, int mode, char *fmt)

{

if (axis_array[FIRST_X_AXIS].datatype == DT_DMS

|| axis_array[FIRST_Y_AXIS].datatype == DT_DMS) {

static char dms_format[16];

sprintf(dms_format, "%%D%s%%.2m'", degree_sign);

if (axis_array[FIRST_X_AXIS].datatype == DT_DMS)

gstrdms(s, fmt ? fmt : dms_format, x);

else

sprintf(s, mouse_setting.fmt, x);

strcat(s,", ");

s += strlen(s);

if (axis_array[FIRST_Y_AXIS].datatype == DT_DMS)

gstrdms(s, fmt ? fmt : dms_format, y);

else

sprintf(s, mouse_setting.fmt, y);

s += strlen(s);

} else if (mode == MOUSE_COORDINATES_XDATE || mode == MOUSE_COORDINATES_XTIME || mode == MOUSE_COORDINATES_XDATETIME || mode == MOUSE_COORDINATES_TIMEFMT) { /* time is on the x axis */

char buf[0xff];

char format[0xff] = "[%s, ";

strcat(format, mouse_setting.fmt);

strcat(format, "]");

sprintf(s, format, xDateTimeFormat(x, buf, mode), y);

} else if (mode == MOUSE_COORDINATES_FRACTIONAL) {

struct axis *x_axis = &axis_array[FIRST_X_AXIS];

struct axis *y_axis = &axis_array[FIRST_Y_AXIS];

sprintf(s, "/ %5.3f, %5.3f",

(double)(mouse_x - x_axis->term_lower)

/ (double)(x_axis->term_upper - x_axis->term_lower),

(double)(mouse_y - y_axis->term_lower)

/ (double)(y_axis->term_upper - y_axis->term_lower));

s += strlen(s);

} else if (mode == MOUSE_COORDINATES_REAL1) {

sprintf(s, xy_format(), x, y); /* w/o brackets */

} else if ((mode == MOUSE_COORDINATES_ALT) && polar) {

double r;

double phi = atan2(y,x);

double rmin = (R_AXIS.autoscale & AUTOSCALE_MIN) ? 0.0 : R_AXIS.set_min;

double theta = phi / DEG2RAD;

/* Undo "set theta" */

theta = (theta - theta_origin) * theta_direction;

if (theta > 180.)

theta = theta - 360.;

if (nonlinear(&R_AXIS))

r = eval_link_function(&R_AXIS, x/cos(phi) + R_AXIS.linked_to_primary->min);

else if (R_AXIS.log)

r = rmin + x/cos(phi);

else if (inverted_raxis)

r = rmin - x/cos(phi);

else

r = rmin + x/cos(phi);

if (fmt)

sprintf(s, fmt, theta, r);

else

sprintf(s, "theta: %.1f%s r: %g", theta, degree_sign, r);

} else if ((mode == MOUSE_COORDINATES_ALT) && fmt) {

sprintf(s, fmt, x, y); /* user defined format */

} else if (mode == MOUSE_COORDINATES_FUNCTION) {

/* EXPERIMENTAL !!! */

t_value original_x, original_y;

struct value readout;

struct udvt_entry *plot_x = add_udv_by_name("x");

struct udvt_entry *plot_y = add_udv_by_name("y");

original_x = plot_x->udv_value;

original_y = plot_y->udv_value;

Gcomplex(&(plot_x->udv_value), x, 0);

Gcomplex(&(plot_y->udv_value), y, 0);

readout.type = NOTDEFINED;

evaluate_at(mouse_readout_function.at, &readout);

plot_x->udv_value = original_x;

plot_y->udv_value = original_y;

if (readout.type != STRING) {

int_warn(NO_CARET, "mouseformat function did not return a string");

} else {

sprintf(s, "%s", readout.v.string_val);

}

gpfree_string(&readout);

} else {

/* Default format ("set mouse mouseformat" is not active) */

sprintf(s, xy_format(), x, y); /* usual x,y values */

}

return s + strlen(s);

}

/* Format x according to the date/time mouse mode. Uses and returns b as

a buffer

static char *

xDateTimeFormat(double x, char *b, int mode)

{

struct tm tm;

switch (mode) {

case MOUSE_COORDINATES_XDATE:

ggmtime(&tm, x);

sprintf(b, "%d. %d. %04d", tm.tm_mday, tm.tm_mon + 1, tm.tm_year);

break;

case MOUSE_COORDINATES_XTIME:

ggmtime(&tm, x);

sprintf(b, "%d:%02d", tm.tm_hour, tm.tm_min);

break;

case MOUSE_COORDINATES_XDATETIME:

ggmtime(&tm, x);

sprintf(b, "%d. %d. %04d %d:%02d", tm.tm_mday, tm.tm_mon + 1, tm.tm_year,

tm.tm_hour, tm.tm_min);

break;

case MOUSE_COORDINATES_TIMEFMT:

gstrftime(b, 0xff, timefmt, x);

break;

default:

sprintf(b, mouse_setting.fmt, x);

}

return b;

}

/* Format one axis coordinate for output to mouse status or

* button 2 label text

static char *

mkstr(char *sp, double x, AXIS_INDEX axis)

{

if (x >= VERYLARGE)

return sp;

if (axis == FIRST_X_AXIS

&& (mouse_mode == MOUSE_COORDINATES_XDATE

|| mouse_mode == MOUSE_COORDINATES_XTIME

|| mouse_mode == MOUSE_COORDINATES_XDATETIME

|| mouse_mode == MOUSE_COORDINATES_TIMEFMT)) {

/* mouseformats 3 4 5 6 use specific time format for x coord */

xDateTimeFormat(x, sp, mouse_mode);

} else if (axis_array[axis].datatype == DT_TIMEDATE) {

char *format = copy_or_invent_formatstring(&axis_array[axis]);

while (strchr(format,'\n'))

*(strchr(format,'\n')) = ' ';

gstrftime(sp, 40, format, x);

} else if (mouse_mode == MOUSE_COORDINATES_FRACTIONAL) {

if (axis == FIRST_X_AXIS || axis == SECOND_X_AXIS) {

struct axis *x_axis = &axis_array[FIRST_X_AXIS];

sprintf(sp, "%5.3f", (double)(mouse_x - x_axis->term_lower)

/ (double)(x_axis->term_upper - x_axis->term_lower));

} else if (axis == FIRST_Y_AXIS || axis == SECOND_Y_AXIS) {

struct axis *y_axis = &axis_array[FIRST_Y_AXIS];

sprintf(sp, "%5.3f", (double)(mouse_y - y_axis->term_lower)

/ (double)(y_axis->term_upper - y_axis->term_lower));

}

} else {

sprintf(sp, mouse_setting.fmt ,x);

}

return (sp + strlen(sp));

}

/* ratio for log, distance for linear */

# define DIST(x,rx,axis) \

(axis_array[axis].log) \

? ( (rx==0) ? 99999 : x / rx ) \

: (x - rx)

/* formats the ruler information (position, distance,...) into string p

(it must be sufficiently long)

x, y is the current mouse position in real coords (for the calculation

of distance)

static void

GetRulerString(char *p, double x, double y)

{

double dx, dy;

char format[0xff] = " ruler: [";

strcat(format, mouse_setting.fmt);

strcat(format, ", ");

strcat(format, mouse_setting.fmt);

strcat(format, "] distance: ");

strcat(format, mouse_setting.fmt);

strcat(format, ", ");

strcat(format, mouse_setting.fmt);

dx = DIST(x, ruler.x, FIRST_X_AXIS);

dy = DIST(y, ruler.y, FIRST_Y_AXIS);

sprintf(p, format, ruler.x, ruler.y, dx, dy);

/* Previously, the following "if" let the polar coordinates to be shown only

for lin-lin plots:

if (mouse_setting.polardistance && !axis_array[FIRST_X_AXIS].log && !axis_array[FIRST_Y_AXIS].log) ...

Now, let us support also semilog and log-log plots.

Values of mouse_setting.polardistance are:

0 (no polar coordinates), 1 (polar coordinates), 2 (tangent instead of angle).

if (mouse_setting.polardistance) {

double rho, phi, rx, ry;

char ptmp[69];

rx = ruler.x;

ry = ruler.y;

format[0] = '\0';

strcat(format, " (");

strcat(format, mouse_setting.fmt);

rho = sqrt((x - rx) * (x - rx) + (y - ry) * (y - ry)); /* distance */

if (mouse_setting.polardistance == 1) { /* (distance, angle) */

phi = (180 / M_PI) * atan2(y - ry, x - rx);

# ifdef OS2

strcat(format, ";% #.4gø)");

# else

strcat(format, ", % #.4gdeg)");

# endif

} else { /* mouse_setting.polardistance==2: (distance, tangent) */

phi = x - rx;

phi = (phi == 0) ? ((y-ry>0) ? VERYLARGE : -VERYLARGE) : (y - ry)/phi;

sprintf(format+strlen(format), ", tangent=%s)", mouse_setting.fmt);

}

sprintf(ptmp, format, rho, phi);

strcat(p, ptmp);

}

static struct t_zoom *zoom_head = NULL, *zoom_now = NULL;

static AXIS *axis_array_copy = NULL;

/* Applies the zoom rectangle of z by sending the appropriate command

to gnuplot

static void

apply_zoom(struct t_zoom *z)

{

int is_splot_map = (is_3d_plot && (splot_map == TRUE));

if (zoom_now != NULL) { /* remember the current zoom */

zoom_now->xmin = axis_array[FIRST_X_AXIS].set_min;

zoom_now->xmax = axis_array[FIRST_X_AXIS].set_max;

zoom_now->x2min = axis_array[SECOND_X_AXIS].set_min;

zoom_now->x2max = axis_array[SECOND_X_AXIS].set_max;

zoom_now->ymin = axis_array[FIRST_Y_AXIS].set_min;

zoom_now->ymax = axis_array[FIRST_Y_AXIS].set_max;

zoom_now->y2min = axis_array[SECOND_Y_AXIS].set_min;

zoom_now->y2max = axis_array[SECOND_Y_AXIS].set_max;

}

/* The autoscale save/restore was too complicated, and broke refresh.

* Just save the complete axis state and have done with it.

if (zoom_now == zoom_head && z != zoom_head) {

axis_array_copy = gp_realloc( axis_array_copy, sizeof(axis_array), "axis_array copy");

memcpy(axis_array_copy, axis_array, sizeof(axis_array));

}

/* If we are zooming, we don't want to autoscale the range.

* This wasn't necessary before we introduced "refresh". Why?

if (zoom_now == zoom_head && z != zoom_head) {

axis_array[FIRST_X_AXIS].autoscale = AUTOSCALE_NONE;

axis_array[FIRST_Y_AXIS].autoscale = AUTOSCALE_NONE;

axis_array[SECOND_X_AXIS].autoscale = AUTOSCALE_NONE;

axis_array[SECOND_Y_AXIS].autoscale = AUTOSCALE_NONE;

}

zoom_now = z;

if (zoom_now == NULL) {

alert();

return;

}

/* Now we're committed. Notify the terminal the the next replot is a zoom */

(*term->layer)(TERM_LAYER_BEFORE_ZOOM);

/* New range on primary axes */

set_explicit_range(&axis_array[FIRST_X_AXIS], zoom_now->xmin, zoom_now->xmax);

set_explicit_range(&axis_array[FIRST_Y_AXIS], zoom_now->ymin, zoom_now->ymax);

/* EAM Apr 2013 - The tests on VERYLARGE protect against trying to */

/* interpret the autoscaling initial state as an actual limit value. */

if (!is_3d_plot

&& (zoom_now->x2min < VERYLARGE && zoom_now->x2max > -VERYLARGE)) {

set_explicit_range(&axis_array[SECOND_X_AXIS], zoom_now->x2min, zoom_now->x2max);

}

if (!is_3d_plot

&& (zoom_now->y2min < VERYLARGE && zoom_now->y2max > -VERYLARGE)) {

set_explicit_range(&axis_array[SECOND_Y_AXIS], zoom_now->y2min, zoom_now->y2max);

}

/* EAM Jun 2007 - The autoscale save/restore was too complicated, and broke

* refresh. Just save/restore the complete axis state and have done with it.

* Well, not _quite_ the complete state. The labels are maintained dynamically.

* Apr 2015 - The same is now true (dynamic storage) for ticfmt, formatstring.

if (zoom_now == zoom_head) {

int i;

for (i=0; i<AXIS_ARRAY_SIZE; i++) {

axis_array_copy[i].label = axis_array[i].label;

axis_array_copy[i].ticdef.def.user = axis_array[i].ticdef.def.user;

axis_array_copy[i].ticdef.font = axis_array[i].ticdef.font;

axis_array_copy[i].ticfmt = axis_array[i].ticfmt;

axis_array_copy[i].formatstring = axis_array[i].formatstring;

}

memcpy(axis_array, axis_array_copy, sizeof(axis_array));

/* The shadowed primary axis, if any, is not restored by the memcpy. */

/* We choose to recalculate the limits, but alternatively we could find */

/* some place to save/restore the unzoomed limits. */

if (nonlinear(&axis_array[FIRST_X_AXIS]))

clone_linked_axes(&axis_array[FIRST_X_AXIS], axis_array[FIRST_X_AXIS].linked_to_primary);

if (nonlinear(&axis_array[FIRST_Y_AXIS]))

clone_linked_axes(&axis_array[FIRST_Y_AXIS], axis_array[FIRST_Y_AXIS].linked_to_primary);

/* Falling through to do_string_replot() does not work! */

if (volatile_data) {

if (refresh_ok == E_REFRESH_OK_2D) {

refresh_request();

return;

}

if (is_splot_map && (refresh_ok == E_REFRESH_OK_3D)) {

refresh_request();

return;

}

} else {

inside_zoom = TRUE;

}

do_string_replot("");

inside_zoom = FALSE;

}

/* makes a zoom: update zoom history, call gnuplot to set ranges + replot

static void

do_zoom(double xmin, double ymin, double x2min, double y2min, double xmax, double ymax, double x2max, double y2max)

{

struct t_zoom *z;

if (zoom_head == NULL) { /* queue not yet created, thus make its head */

zoom_head = gp_alloc(sizeof(struct t_zoom), "mouse zoom history head");

zoom_head->prev = NULL;

zoom_head->next = NULL;

}

if (zoom_now == NULL)

zoom_now = zoom_head;

if (zoom_now->next == NULL) { /* allocate new item */

z = gp_alloc(sizeof(struct t_zoom), "mouse zoom history element");

z->prev = zoom_now;

z->next = NULL;

zoom_now->next = z;

z->prev = zoom_now;

} else /* overwrite next item */

z = zoom_now->next;

#define SET_AXIS(axis, name, minmax, condition) \

z->name ## minmax = (axis_array[axis].minmax condition) ? name ## minmax : axis_array[axis].minmax

SET_AXIS(FIRST_X_AXIS, x, min, < VERYLARGE);

SET_AXIS(FIRST_Y_AXIS, y, min, < VERYLARGE);

SET_AXIS(SECOND_X_AXIS, x2, min, < VERYLARGE);

SET_AXIS(SECOND_Y_AXIS, y2, min, < VERYLARGE);

SET_AXIS(FIRST_X_AXIS, x, max, > -VERYLARGE);

SET_AXIS(FIRST_Y_AXIS, y, max, > -VERYLARGE);

SET_AXIS(SECOND_X_AXIS, x2, max, > -VERYLARGE);

SET_AXIS(SECOND_Y_AXIS, y2, max, > -VERYLARGE);

#undef SET_AXIS

apply_zoom(z);

}

static void

ZoomNext()

{

if (zoom_now == NULL || zoom_now->next == NULL)

alert();

else

apply_zoom(zoom_now->next);

if (display_ipc_commands()) {

fprintf(stderr, "next zoom.\n");

}

static void

ZoomPrevious()

{

if (zoom_now == NULL || zoom_now->prev == NULL)

alert();

else

apply_zoom(zoom_now->prev);

if (display_ipc_commands()) {

fprintf(stderr, "previous zoom.\n");

}

static void

ZoomUnzoom()

{

if (zoom_head == NULL || zoom_now == zoom_head)

alert();

else

apply_zoom(zoom_head);

if (display_ipc_commands()) {

fprintf(stderr, "unzoom.\n");

}

static void

incr_mousemode(const int amount)

{

long int old = mouse_mode;

TBOOLEAN found_a_new_one = FALSE;

mouse_mode += amount;

while (!found_a_new_one) {

if (MOUSE_COORDINATES_ALT == mouse_mode && !(mouse_alt_string || polar))

mouse_mode += amount; /* stepping over */

else if (MOUSE_COORDINATES_FUNCTION == mouse_mode && mouse_readout_function.at == NULL)

mouse_mode += amount; /* stepping over */

else if (mouse_mode > MOUSE_COORDINATES_FUNCTION)

mouse_mode = MOUSE_COORDINATES_REAL1;

else if (mouse_mode <= MOUSE_COORDINATES_REAL)

mouse_mode = MOUSE_COORDINATES_FUNCTION;

else

found_a_new_one = TRUE;

}

UpdateStatusline();

if (display_ipc_commands())

fprintf(stderr, "switched mouse format from %ld to %ld\n", old, mouse_mode);

}

# define TICS_ON(ti) (((ti)&TICS_MASK)!=NO_TICS)

void

UpdateStatusline()

{

UpdateStatuslineWithMouseSetting(&mouse_setting);

}

static void

UpdateStatuslineWithMouseSetting(mouse_setting_t * ms)

{

char s0[256], *sp;

s0[0] = 0;

/* This suppresses mouse coordinate update after a ^C */

if (!term_initialised)

return;

if (!ms->on)

return;

if (!ALMOST2D) {

char format[0xff];

format[0] = '\0';

strcat(format, "view: ");

strcat(format, ms->fmt);

strcat(format, ", ");

strcat(format, ms->fmt);

strcat(format, " scale: ");

strcat(format, ms->fmt);

strcat(format, ", ");

strcat(format, ms->fmt);

sprintf(s0, format, surface_rot_x, surface_rot_z, surface_scale, surface_zscale);

} else if (!TICS_ON(axis_array[SECOND_X_AXIS].ticmode) && !TICS_ON(axis_array[SECOND_Y_AXIS].ticmode)) {

/* only first X and Y axis are in use */

sp = GetAnnotateString(s0, real_x, real_y, mouse_mode, mouse_alt_string);

if (ruler.on)

GetRulerString(sp, real_x, real_y);

} else {

/* X2 and/or Y2 are in use: use more verbose format */

sp = s0;

if (TICS_ON(axis_array[FIRST_X_AXIS].ticmode)) {

sp = stpcpy(sp, "x=");

sp = mkstr(sp, real_x, FIRST_X_AXIS);

*sp++ = ' ';

}

if (TICS_ON(axis_array[FIRST_Y_AXIS].ticmode)) {

sp = stpcpy(sp, "y=");

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gnuplot/src/mouse.c at master · gnuplot/gnuplot · GitHub

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