lyx_mirror/src/combox.C

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// -*- C++ -*-
/*
* Combox: A combination of two objects (a button and a browser) is
* encapsulated to get a combobox-like object. All XForms
* functions are hidden.
*
* GNU Copyleft (C) 1996 Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
* and the LyX Team.
*
* Dependencies: Only XForms, but created to be used with LyX.
*
*/
/* Change log:
*
* 2/06/1996, Alejandro Aguilar Sierra
* Created and tested.
*
* 4/06/1996, Alejandro Aguilar Sierra
* Added droplist mode (a button with a black down arrow at right)
* and support for middle and right buttons, as XForms choice object.
*
* 6/06/1996, Lars Gullik Bj<EFBFBD>nnes
* Added a combox with an input object. and a pre and a post handle.
*
* 22/07/96, Alejandro Aguilar Sierra
* Assigned to the browser its own popup window. No more need of
* external pre and post handlers to simulate the wanted behaviour.
*
*/
#include <config.h>
#ifdef __GNUG__
#pragma implementation
#endif
#include "combox.h"
#include <cstring>
#include "debug.h"
// These are C wrappers around static members of Combox, used as
// callbacks for xforms.
extern "C" void C_Combox_input_cb(FL_OBJECT *ob, long);
extern "C" void C_Combox_combo_cb(FL_OBJECT *ob, long data) ;
extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev);
Combox::Combox(combox_type t): type(t)
{
browser = button = 0;
callback = 0;
label = 0;
cb_arg = 0;
_pre = 0;
_post = 0;
sel = 0;
form = 0;
}
Combox::~Combox()
{
remove();
}
void Combox::clear()
{
if (browser) fl_clear_browser(browser);
sel = 0;
if (type == FL_COMBOX_INPUT)
fl_set_input(label, "");
else
fl_set_object_label(label, "");
is_empty = true;
}
void Combox::remove()
{
lyxerr.debug() << "Button: " << button << endl;
if (button) {
fl_delete_object(button);
fl_free_object(button);
}
lyxerr.debug() << "Label: " << label << endl;
if (label && label!= button) {
fl_delete_object(label);
fl_free_object(label);
}
lyxerr.debug() << "Form: " << form << endl;
lyxerr.debug() << "Browser: " << browser << endl;
if (form && browser) {
fl_delete_object(browser);
fl_free_object(browser);
fl_free_form(form);
}
button = 0;
browser = 0;
label = 0;
form = 0;
sel = 0;
is_empty = true;
}
void Combox::addline(char const* text)
{
if (!browser) return;
fl_add_browser_line(browser, text);
// By default the first item is selected
if (!sel) {
sel = 1;
if (type == FL_COMBOX_INPUT)
fl_set_input(label, text);
else
fl_set_object_label(label, text);
}
is_empty = false;
}
bool Combox::select_text(char const* t)
{
if (!browser || !t) return false;
for (int i= 1; i<= fl_get_browser_maxline(browser); i++) {
if (!strcmp(t, fl_get_browser_line(browser, i))) {
select(i);
return true;
}
}
return false; // t does not exist in browser
}
void Combox::select(int i)
{
if (!browser || !button) return;
if (i>0 && i<= fl_get_browser_maxline(browser)) sel = i;
fl_deactivate_object(button);
if (type == FL_COMBOX_INPUT)
fl_set_input(label, fl_get_browser_line(browser, sel));
else
fl_set_object_label(label, fl_get_browser_line(browser, sel));
fl_activate_object(button);
}
void Combox::add(int x, int y, int w, int hmin, int hmax)
{
FL_OBJECT *obj;
switch(type) {
case FL_COMBOX_DROPLIST:
{
button = obj = fl_add_button(FL_NORMAL_BUTTON,
x+w-22, y, 22, hmin, "@2->");
fl_set_object_color(obj, FL_MCOL, FL_MCOL);
fl_set_object_dblbuffer(obj, 1);
fl_set_object_callback(obj, C_Combox_combo_cb, 0);
label = obj = fl_add_button(FL_NORMAL_TEXT, x, y, w-22, hmin, "");
fl_set_object_boxtype(obj, FL_DOWN_BOX);
fl_set_object_color(obj, FL_MCOL, FL_BLACK);
fl_set_object_lalign(obj, FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
fl_set_object_dblbuffer(obj, 1);
fl_set_object_callback(obj, C_Combox_combo_cb, 0);
break;
}
case FL_COMBOX_NORMAL:
{
button = obj = fl_add_button(FL_NORMAL_BUTTON, x, y, w, hmin, "");
fl_set_object_color(obj, FL_MCOL, FL_MCOL);
fl_set_object_boxtype(obj, FL_DOWN_BOX);
fl_set_object_callback(obj, C_Combox_combo_cb, 0);
fl_set_object_color(obj, FL_MCOL, FL_BLACK);
label = button;
break;
}
case FL_COMBOX_INPUT:
{
button = obj = fl_add_button(FL_NORMAL_BUTTON,
x+w-22, y, 22, hmin, "@2->");
fl_set_object_color(obj, FL_MCOL, FL_MCOL);
fl_set_object_callback(obj, C_Combox_combo_cb, 0);
label = obj = fl_add_input(FL_NORMAL_INPUT, x, y, w-22, hmin, "");
fl_set_object_boxtype(obj, FL_DOWN_BOX);
fl_set_object_return(obj, FL_RETURN_END_CHANGED);
fl_set_object_callback(obj, C_Combox_input_cb, 0);
//fl_set_object_color(obj, FL_MCOL, FL_BLACK);
//fl_set_object_lalign(obj,FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
break;
}
} // end of switch
label->u_vdata = this;
button->u_vdata = this;
// Hmm, it seems fl_create_browser is broken in xforms 0.86.
// We have to work around that by creating the dropped browser form
// at this point already. However, this means that we have
// to do a little hacking: (Asger)
FL_FORM * current_form = fl_current_form;
fl_end_form();
bw = w + 20; bh = hmax - hmin - 12;
form = fl_bgn_form(FL_NO_BOX, bw, bh);
browser = obj = fl_add_browser(FL_HOLD_BROWSER, 0, 0, bw, bh, "");
fl_set_object_boxtype(obj, FL_UP_BOX);
fl_set_object_color(obj, FL_MCOL, FL_YELLOW);
fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
fl_set_object_callback(obj, C_Combox_combo_cb, 2);
fl_end_form();
browser->u_vdata = this;
form->u_vdata = browser;
fl_register_raw_callback(form,
ButtonPressMask|KeyPressMask,
C_Combox_peek_event);
// And revert to adding to the old form (Asger)
fl_addto_form(current_form);
}
static Window save_window;
void Combox::Redraw()
{
if (browser) fl_redraw_object(browser);
if (button) fl_redraw_object(button);
if (label) fl_redraw_object(label);
}
void Combox::Show()
{
if (_pre) _pre();
int tmp;
XGetInputFocus(fl_display, &save_window, &tmp); //BUG-Fix Dietmar
XFlush(fl_display);
if (button && type != FL_COMBOX_NORMAL) {
fl_set_object_label(button, "@2<-");
fl_redraw_object(button);
}
int x = label->form->x + label->x, y = label->form->y + label->y;
fl_set_form_position(form, x, y + label->h);
fl_show_form(form, FL_PLACE_POSITION, FL_NOBORDER, "");
if (sel>0) {
fl_set_browser_topline(browser, sel);
fl_select_browser_line(browser, sel);
}
XGrabPointer(fl_display, form->window, false,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync,
0, 0, 0);
XFlush(fl_display);
}
void Combox::Hide(int who)
{
if (!who && browser && label) {
sel = fl_get_browser(browser);
if (type == FL_COMBOX_INPUT)
fl_set_input(label, fl_get_browser_line(browser, sel));
else
fl_set_object_label(label,
fl_get_browser_line(browser, sel));
if (callback) callback(sel, cb_arg);
}
XUngrabPointer(fl_display, 0);
XFlush(fl_display);
if (form) {
fl_hide_form(form);
XSetInputFocus(fl_display, save_window,
RevertToParent, CurrentTime); // BUG-FIX-Dietmar
XFlush(fl_display);
}
if (button) {
if (type != FL_COMBOX_NORMAL){
fl_set_object_label(button, "@2->");
fl_redraw_object(button);
}
}
if (_post) _post();
}
void Combox::activate()
{
if (browser) fl_activate_object(browser);
if (button) fl_activate_object(button);
if (label) fl_activate_object(label);
}
void Combox::deactivate()
{
if (browser) fl_deactivate_object(browser);
if (button) fl_deactivate_object(button);
if (label) fl_deactivate_object(label);
}
void Combox::input_cb(FL_OBJECT *ob, long)
{
Combox * combo = static_cast<Combox*>(ob->u_vdata);
char const * text = fl_get_input(ob);
combo->addto(text);
combo->is_empty = false;
}
extern "C" void C_Combox_input_cb(FL_OBJECT * ob, long data)
{
Combox::input_cb(ob, data);
}
void Combox::combo_cb(FL_OBJECT * ob, long data)
{
Combox * combo = static_cast<Combox*>(ob->u_vdata);
switch (data) {
case 0:
{
int i = combo->get();
switch (fl_get_button_numb(ob)) {
case 2:
{
combo->select(--i);
if (combo->callback)
combo->callback(combo->sel,
combo->cb_arg);
break;
}
case 3:
{
combo->select(++i);
if (combo->callback)
combo->callback(combo->sel,
combo->cb_arg);
break;
}
default: combo->Show(); break;
}
break;
}
case 2:
combo->Hide();
break;
}
}
extern "C" void C_Combox_combo_cb(FL_OBJECT * ob, long data)
{
Combox::combo_cb(ob, data);
}
int Combox::peek_event(FL_FORM * form, void * xev)
{
FL_OBJECT * ob = static_cast<FL_OBJECT *>(form->u_vdata);
Combox * combo = static_cast<Combox*>(ob->u_vdata);
#if FL_REVISION < 86
if(((XEvent *)xev)->type == ButtonPress && !ob->belowmouse)
#endif
#if FL_REVISION > 85
// I don't know why belowmouse does not work, but it doesn't. (Asger)
// Are we sure?
if (static_cast<XEvent *>(xev)->type == ButtonPress && (
static_cast<XEvent *>(xev)->xbutton.x - ob->x < 0 ||
static_cast<XEvent *>(xev)->xbutton.x - ob->x > ob->w ||
static_cast<XEvent *>(xev)->xbutton.y - ob->y < 0 ||
static_cast<XEvent *>(xev)->xbutton.y - ob->y > ob->h))
#endif
{
combo->Hide(1);
return 1;
}
if (static_cast<XEvent*>(xev)->type != KeyPress) return 0;
char s_r[10];
static int num_bytes;
KeySym keysym_return;
num_bytes = XLookupString(&static_cast<XEvent*>(xev)->xkey, s_r, 10,
&keysym_return, 0);
XFlush(fl_display);
switch (keysym_return) {
case XK_Down:
if (fl_get_browser(combo->browser) <
fl_get_browser_maxline(combo->browser))
fl_select_browser_line(combo->browser,
fl_get_browser(combo->browser)+1);
if (fl_get_browser(combo->browser)>=
fl_get_browser_topline(combo->browser) +
fl_get_browser_screenlines(combo->browser))
fl_set_browser_topline(combo->browser,
fl_get_browser(combo->browser)
- fl_get_browser_screenlines(combo->browser)+1);
if (fl_get_browser(combo->browser)<
fl_get_browser_topline(combo->browser))
fl_set_browser_topline(combo->browser,
fl_get_browser(combo->browser));
return 1;
case XK_Up:
if (fl_get_browser(combo->browser) > 1)
fl_select_browser_line(combo->browser,
fl_get_browser(combo->browser)-1);
if (fl_get_browser(combo->browser)>=
fl_get_browser_topline(combo->browser) +
fl_get_browser_screenlines(combo->browser))
fl_set_browser_topline(combo->browser,
fl_get_browser(combo->browser)
- fl_get_browser_screenlines(combo->browser)+1);
if (fl_get_browser(combo->browser) <
fl_get_browser_topline(combo->browser))
fl_set_browser_topline(combo->browser,
fl_get_browser(combo->browser));
return 1;
case XK_Return:
combo->Hide();
return 1;
case XK_Escape:
combo->Hide(1);
return 1;
}
return 0;
}
extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev)
{
return Combox::peek_event(form, xev);
}
#ifdef TESTCOMBO
typedef struct {
FL_FORM *test;
FL_OBJECT *bar;
void *vdata;
long ldata;
} FD_test;
//Combox combo(FL_COMBOX_DROPLIST);
Combox combo(FL_COMBOX_INPUT);
FD_test *fd_test;
FD_test *create_form_test(void)
{
FL_OBJECT *obj;
FD_test *fdui = (FD_test *) fl_calloc(1, sizeof(*fdui));
fdui->test = fl_bgn_form(FL_NO_BOX, 320, 190);
obj = fl_add_box(FL_UP_BOX, 0, 0, 320, 190, "");
obj = fl_add_box(FL_DOWN_BOX, 10, 50, 300, 110, "");
obj = fl_add_button(FL_NORMAL_BUTTON, 250, 10, 50, 30, _("Done"));
combo.add(10, 15, 120, 25, 135);
fl_end_form();
return fdui;
}
void combo_cb(int i)
{
fprintf(stderr, "selected %d:%s\n", i, combo.getline());
}
int main(int argc, char *argv[])
{
//int n1;
// Same defaults as in lyx
FL_IOPT cntl;
cntl.buttonFontSize = FL_NORMAL_SIZE;
cntl.browserFontSize = FL_NORMAL_SIZE;
cntl.labelFontSize = FL_NORMAL_SIZE;
cntl.choiceFontSize = FL_NORMAL_SIZE;
cntl.inputFontSize = FL_NORMAL_SIZE;
cntl.borderWidth = -2;
fl_set_defaults(FL_PDButtonFontSize, &cntl);
fl_set_defaults(FL_PDBrowserFontSize, &cntl);
fl_set_defaults(FL_PDLabelFontSize, &cntl);
fl_set_defaults(FL_PDChoiceFontSize, &cntl);
fl_set_defaults(FL_PDInputFontSize, &cntl);
fl_set_defaults(FL_PDBorderWidth, &cntl);
fl_initialize(&argc, argv, 0, 0, 0);
fd_test = create_form_test();
/* fill-in form initialization code */
combo.addline("Title");
combo.addline("Author");
combo.addline("Date");
combo.addline("Abstract");
combo.addline("Chapter");
combo.addline("Section");
combo.addline("Subsection");
combo.addline("List");
combo.addline("Description");
combo.addline("Verse");
combo.addline("Verbatim");
combo.setcallback(combo_cb);
// combo.select(4);
/* show the first form */
fl_show_form(fd_test->test, FL_PLACE_CENTER, FL_FULLBORDER, "test");
fl_do_forms();
return 0;
}
#endif