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3fa37dc5a4
lyx_mirror/src/BufferView.C
Lars Gullik Bjønnes 3fa37dc5a4 small backstack fix 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@244 a592a061-630c-0410-9148-cb99ea01b6c8
1999-10-25 18:52:23 +00:00

1529 lines
38 KiB
C
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// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1995 Matthias Ettrich
* Copyright 1995-1999 The LyX Team.
*
* ======================================================*/
#include <config.h>
#include <cstdlib>
#include <csignal>
#include <unistd.h>
#include <sys/wait.h>
#include "support/lstrings.h"
#ifdef __GNUG__
#pragma implementation
#endif
#include "commandtags.h"
#include "BufferView.h"
#include "bufferlist.h"
#include "LyXView.h"
#include "lyxfunc.h"
#include "insets/lyxinset.h"
#include "minibuffer.h"
#include "lyxscreen.h"
#include "up.xpm"
#include "down.xpm"
#include "debug.h"
#include "lyxdraw.h"
#include "lyx_gui_misc.h"
#include "BackStack.h"
#include "lyxtext.h"
#include "lyx_cb.h"
#include "gettext.h"
extern BufferList bufferlist;
void sigchldhandler(pid_t pid, int *status);
extern void SetXtermCursor(Window win);
extern bool input_prohibited;
extern bool selection_possible;
extern void BeforeChange();
extern char ascii_type;
extern int UnlockInset(UpdatableInset* inset);
extern void ToggleFloat();
extern void MenuPasteSelection(char at);
extern InsetUpdateStruct *InsetUpdateList;
extern void UpdateInsetUpdateList();
// This is _very_ temporary
FL_OBJECT *figinset_canvas;
BufferView::BufferView(LyXView *o, int xpos, int ypos,
int width, int height)
: _owner(o)
{
_buffer = 0;
screen = 0;
work_area = 0;
figinset_canvas = 0;
scrollbar = 0;
button_down = 0;
button_up = 0;
timer_cursor = 0;
current_scrollbar_value = 0;
create_view(xpos, ypos, width, height);
// Activate the timer for the cursor
fl_set_timer(timer_cursor, 0.4);
fl_set_focus_object(_owner->getForm(), work_area);
work_area_focus = true;
lyx_focus = false;
backstack = new BackStack(16);
}
BufferView::~BufferView()
{
delete backstack;
}
void BufferView::setBuffer(Buffer *b)
{
lyxerr.debug() << "Setting buffer in BufferView" << endl;
if (_buffer) {
_buffer->InsetSleep();
_buffer->delUser(this);
}
// Set current buffer
_buffer = b;
if (bufferlist.getState() == BufferList::CLOSING) return;
// Nuke old image
if (screen)
delete screen;
screen = 0;
// If we are closing the buffer, use the first buffer as current
if (!_buffer) {
_buffer = bufferlist.first();
}
if (_buffer) {
lyxerr.debug() << " Buffer addr: " << _buffer << endl;
_buffer->addUser(this);
_owner->getMenus()->showMenus();
// If we don't have a text object for this, we make one
if (_buffer->text == 0)
resizeCurrentBuffer();
else {
updateScreen();
updateScrollbar();
}
screen->first = screen->TopCursorVisible();
redraw();
updateAllVisibleBufferRelatedPopups();
_buffer->InsetWakeup();
} else {
lyxerr.debug() << " No Buffer!" << endl;
_owner->getMenus()->hideMenus();
//workAreaExpose();
updateScrollbar();
fl_redraw_object(work_area);
}
// should update layoutchoice even if we don't have a buffer.
_owner->updateLayoutChoice();
_owner->getMiniBuffer()->Init();
_owner->updateWindowTitle();
}
void BufferView::updateScreen()
{
// Regenerate the screen.
if (screen)
delete screen;
screen = new LyXScreen(FL_ObjWin(work_area),
work_area->w,
work_area->h,
work_area->x,
work_area->y,
_buffer->text);
}
void BufferView::resize()
{
// This will resize the buffer. (Asger)
if (_buffer)
resizeCurrentBuffer();
}
static bool lgb_hack = false;
void BufferView::redraw()
{
lyxerr.debug() << "BufferView::redraw()" << endl;
lgb_hack = true;
fl_redraw_object(work_area);
fl_redraw_object(scrollbar);
fl_redraw_object(button_down);
fl_redraw_object(button_up);
lgb_hack = false;
}
void BufferView::fitCursor()
{
if (screen) screen->FitCursor();
}
void BufferView::update()
{
if (screen) screen->Update();
}
void BufferView::updateScrollbar()
{
/* If the text is smaller than the working area, the scrollbar
* maximum must be the working area height. No scrolling will
* be possible */
if (!_buffer) {
fl_set_slider_value(scrollbar, 0);
fl_set_slider_size(scrollbar, scrollbar->h);
return;
}
static long max2 = 0;
static long height2 = 0;
long cbth = 0;
long cbsf = 0;
if (_buffer->text)
cbth = _buffer->text->height;
if (screen)
cbsf = screen->first;
// check if anything has changed.
if (max2 == cbth &&
height2 == work_area->h &&
current_scrollbar_value == cbsf)
return; // no
max2 = cbth;
height2 = work_area->h;
current_scrollbar_value = cbsf;
if (cbth <= height2) { // text is smaller than screen
fl_set_slider_size(scrollbar, scrollbar->h);
return;
}
long maximum_height = work_area->h * 3/4 + cbth;
long value = cbsf;
/* set the scrollbar */
double hfloat = work_area->h;
double maxfloat = maximum_height;
fl_set_slider_value(scrollbar, value);
fl_set_slider_bounds(scrollbar, 0,
maximum_height - work_area->h);
#if FL_REVISION > 85
double lineh = _buffer->text->DefaultHeight();
fl_set_slider_increment(scrollbar,work_area->h-lineh,lineh);
#endif
if (maxfloat>0){
if ((hfloat/maxfloat) * (float) height2 < 3)
fl_set_slider_size(scrollbar,
3/(float)height2);
else
fl_set_slider_size(scrollbar,
hfloat/maxfloat);
} else
fl_set_slider_size(scrollbar, hfloat);
fl_set_slider_precision(scrollbar, 0);
}
void BufferView::redoCurrentBuffer()
{
lyxerr.debug() << "BufferView::redoCurrentBuffer" << endl;
if (_buffer && _buffer->text) {
resize();
_owner->updateLayoutChoice();
}
}
int BufferView::resizeCurrentBuffer()
{
lyxerr.debug() << "resizeCurrentBuffer" << endl;
LyXParagraph *par = 0;
LyXParagraph *selstartpar = 0;
LyXParagraph *selendpar = 0;
int pos = 0;
int selstartpos = 0;
int selendpos = 0;
int selection = 0;
int mark_set = 0;
ProhibitInput();
_owner->getMiniBuffer()->Set(_("Formatting document..."));
if (_buffer->text) {
par = _buffer->text->cursor.par;
pos = _buffer->text->cursor.pos;
selstartpar = _buffer->text->sel_start_cursor.par;
selstartpos = _buffer->text->sel_start_cursor.pos;
selendpar = _buffer->text->sel_end_cursor.par;
selendpos = _buffer->text->sel_end_cursor.pos;
selection = _buffer->text->selection;
mark_set = _buffer->text->mark_set;
delete _buffer->text;
}
_buffer->text = new LyXText(work_area->w, _buffer);
updateScreen();
if (par) {
_buffer->text->selection = true;
/* at this point just
* to avoid the Delete-
* Empty-Paragraph
* Mechanism when
* setting the cursor */
_buffer->text->mark_set = mark_set;
if (selection) {
_buffer->text->SetCursor(selstartpar, selstartpos);
_buffer->text->sel_cursor = _buffer->text->cursor;
_buffer->text->SetCursor(selendpar, selendpos);
_buffer->text->SetSelection();
_buffer->text->SetCursor(par, pos);
} else {
_buffer->text->SetCursor(par, pos);
_buffer->text->sel_cursor = _buffer->text->cursor;
_buffer->text->selection = false;
}
}
screen->first = screen->TopCursorVisible(); /* this will scroll the
* screen such that the
* cursor becomes
* visible */
updateScrollbar();
redraw();
_owner->getMiniBuffer()->Init();
AllowInput();
// Now if the title form still exist kill it
TimerCB(0,0);
return 0;
}
void BufferView::gotoError()
{
if (!screen)
return;
screen->HideCursor();
BeforeChange();
_buffer->update(-2);
LyXCursor tmp;
if (!_buffer->text->GotoNextError()) {
if (_buffer->text->cursor.pos
|| _buffer->text->cursor.par !=
_buffer->text->FirstParagraph()) {
tmp = _buffer->text->cursor;
_buffer->text->cursor.par =
_buffer->text->FirstParagraph();
_buffer->text->cursor.pos = 0;
if (!_buffer->text->GotoNextError()) {
_buffer->text->cursor = tmp;
_owner->getMiniBuffer()->Set(_("No more errors"));
LyXBell();
}
} else {
_owner->getMiniBuffer()->Set(_("No more errors"));
LyXBell();
}
}
_buffer->update(0);
_buffer->text->sel_cursor =
_buffer->text->cursor;
}
// Just a bunch of C wrappers around static members of BufferView
extern "C" void C_BufferView_UpCB(FL_OBJECT *ob, long buf) {
BufferView::UpCB(ob,buf);
}
extern "C" void C_BufferView_DownCB(FL_OBJECT *ob, long buf) {
BufferView::DownCB(ob,buf);
}
extern "C" void C_BufferView_ScrollCB(FL_OBJECT *ob, long buf) {
BufferView::ScrollCB(ob,buf);
}
extern "C" void C_BufferView_CursorToggleCB(FL_OBJECT *ob, long buf) {
BufferView::CursorToggleCB(ob,buf);
}
extern "C" int C_BufferView_work_area_handler(FL_OBJECT *ob, int event,
FL_Coord, FL_Coord,
int key, void *xev) {
return BufferView::work_area_handler(ob, event, 0, 0, key, xev);
}
void BufferView::create_view(int xpos, int ypos, int width, int height)
{
FL_OBJECT *obj;
const int bw = abs(fl_get_border_width());
// a hack for the figinsets (Matthias)
// This one first, then it will probably be invisible. (Lgb)
::figinset_canvas = figinset_canvas = obj =
fl_add_canvas(FL_NORMAL_CANVAS,
xpos + 1,
ypos + 1,1,1,"");
fl_set_object_boxtype(obj,FL_NO_BOX);
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
// a box
obj = fl_add_box(FL_BORDER_BOX, xpos, ypos,
width - 15,
height,"");
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
// the free object
work_area = obj = fl_add_free(FL_INPUT_FREE,
xpos +bw, ypos+bw,
width-15-2*bw /* scrollbarwidth */,
height-2*bw,"",
C_BufferView_work_area_handler);
obj->wantkey = FL_KEY_TAB;
obj->u_vdata = this; /* This is how we pass the BufferView
to the work_area_handler. */
fl_set_object_boxtype(obj,FL_DOWN_BOX);
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
//
// THE SCROLLBAR
//
// up - scrollbar button
#if FL_REVISION > 85
fl_set_border_width(-1);
#else
fl_set_border_width(-2); // to get visible feedback
#endif
button_up = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
width-15+4*bw,
ypos,
15,15,"");
fl_set_object_boxtype(obj,FL_UP_BOX);
fl_set_object_color(obj,FL_MCOL,FL_BLUE);
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj,NorthEastGravity, NorthEastGravity);
fl_set_object_callback(obj,C_BufferView_UpCB,(long)this);
fl_set_pixmapbutton_data(obj, up_xpm);
#if FL_REVISION >85
// Remove the blue feedback rectangle
fl_set_pixmapbutton_focus_outline(obj,0);
#endif
// the scrollbar slider
fl_set_border_width(-bw);
scrollbar = obj = fl_add_slider(FL_VERT_SLIDER,
width-15+4*bw,
ypos + 15,
15,height-30,"");
fl_set_object_color(obj,FL_COL1,FL_MCOL);
fl_set_object_boxtype(obj, FL_UP_BOX);
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj, NorthEastGravity, SouthEastGravity);
fl_set_object_callback(obj,C_BufferView_ScrollCB,(long)this);
// down - scrollbar button
#if FL_REVISION > 85
fl_set_border_width(-1);
#else
fl_set_border_width(-2); // to get visible feedback
#endif
button_down = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
width-15+4*bw,
ypos + height-15,
15,15,"");
fl_set_object_boxtype(obj,FL_UP_BOX);
fl_set_object_color(obj,FL_MCOL,FL_BLUE);
fl_set_object_resize(obj, FL_RESIZE_ALL);
fl_set_object_gravity(obj, SouthEastGravity, SouthEastGravity);
fl_set_object_callback(obj,C_BufferView_DownCB,(long)this);
fl_set_pixmapbutton_data(obj, down_xpm);
fl_set_border_width(-bw);
#if FL_REVISION >85
// Remove the blue feedback rectangle
fl_set_pixmapbutton_focus_outline(obj,0);
#endif
//
// TIMERS
//
// timer_cursor
timer_cursor = obj = fl_add_timer(FL_HIDDEN_TIMER,
0,0,0,0,"Timer");
fl_set_object_callback(obj,C_BufferView_CursorToggleCB,0);
obj->u_vdata = this;
}
// Callback for scrollbar up button
void BufferView::UpCB(FL_OBJECT *ob, long buf)
{
BufferView *view = (BufferView*) buf;
if (view->_buffer == 0) return;
const XEvent*ev2;
static long time = 0;
ev2 = fl_last_event();
if (ev2->type == ButtonPress || ev2->type == ButtonRelease)
time = 0;
int button = fl_get_button_numb(ob);
switch (button) {
case 3:
view->ScrollUpOnePage(time++); break;
case 2:
view->ScrollDownOnePage(time++); break;
default:
view->ScrollUp(time++); break;
}
}
static
void waitForX()
{
static Window w = 0;
static Atom a = 0;
if (!a)
a = XInternAtom(fl_display, "WAIT_FOR_X", False);
if (w == 0) {
int mask;
XSetWindowAttributes attr;
mask = CWOverrideRedirect;
attr.override_redirect = 1;
w = XCreateWindow(fl_display, fl_root,
0, 0, 1, 1, 0, CopyFromParent,
InputOnly, CopyFromParent, mask, &attr);
XSelectInput(fl_display, w, PropertyChangeMask);
XMapWindow(fl_display, w);
}
static XEvent ev;
XChangeProperty(fl_display, w, a, a, 8,
PropModeAppend, (unsigned char *)"", 0);
XWindowEvent(fl_display, w, PropertyChangeMask, &ev);
}
// Callback for scrollbar slider
void BufferView::ScrollCB(FL_OBJECT *ob, long buf)
{
BufferView *view = (BufferView*) buf;
extern bool cursor_follows_scrollbar;
if (view->_buffer == 0) return;
view->current_scrollbar_value = (long)fl_get_slider_value(ob);
if (view->current_scrollbar_value < 0)
view->current_scrollbar_value = 0;
if (!view->screen)
return;
view->screen->Draw(view->current_scrollbar_value);
if (cursor_follows_scrollbar) {
LyXText * vbt = view->_buffer->text;
int height = vbt->DefaultHeight();
if (vbt->cursor.y < view->screen->first + height) {
vbt->SetCursorFromCoordinates(0,
view->screen->first +
height);
}
else if (vbt->cursor.y >
view->screen->first + view->work_area->h - height) {
vbt->SetCursorFromCoordinates(0,
view->screen->first +
view->work_area->h -
height);
}
}
waitForX();
}
// Callback for scrollbar down button
void BufferView::DownCB(FL_OBJECT *ob, long buf)
{
BufferView *view = (BufferView*) buf;
if (view->_buffer == 0) return;
const XEvent*ev2;
static long time = 0;
ev2 = fl_last_event();
if (ev2->type == ButtonPress || ev2->type == ButtonRelease)
time = 0;
int button = fl_get_button_numb(ob);
switch (button) {
case 2:
view->ScrollUpOnePage(time++); break;
case 3:
view->ScrollDownOnePage(time++); break;
default:
view->ScrollDown(time++); break;
}
}
int BufferView::ScrollUp(long time)
{
if (_buffer == 0) return 0;
if (!screen)
return 0;
double value= fl_get_slider_value(scrollbar);
if (value == 0)
return 0;
float add_value = (_buffer->text->DefaultHeight()
+ (float)(time) * (float)(time) * 0.125);
if (add_value > work_area->h)
add_value = (float) (work_area->h -
_buffer->text->DefaultHeight());
value -= add_value;
if (value < 0)
value = 0;
fl_set_slider_value(scrollbar, value);
ScrollCB(scrollbar,(long)this);
return 0;
}
int BufferView::ScrollDown(long time)
{
if (_buffer == 0) return 0;
if (!screen)
return 0;
double value= fl_get_slider_value(scrollbar);
double min, max;
fl_get_slider_bounds(scrollbar, &min, &max);
if (value == max)
return 0;
float add_value = (_buffer->text->DefaultHeight()
+ (float)(time) * (float)(time) * 0.125);
if (add_value > work_area->h)
add_value = (float) (work_area->h -
_buffer->text->DefaultHeight());
value += add_value;
if (value > max)
value = max;
fl_set_slider_value(scrollbar, value);
ScrollCB(scrollbar,(long)this);
return 0;
}
void BufferView::ScrollUpOnePage(long /*time*/)
{
if (_buffer == 0) return;
if (!screen)
return;
long y = screen->first;
if (!y) return;
Row* row = _buffer->text->GetRowNearY(y);
y = y - work_area->h + row->height;
fl_set_slider_value(scrollbar, y);
ScrollCB(scrollbar,(long)this);
}
void BufferView::ScrollDownOnePage(long /*time*/)
{
if (_buffer == 0) return;
if (!screen)
return;
double min, max;
fl_get_slider_bounds(scrollbar, &min, &max);
long y = screen->first;
if (y > _buffer->text->height - work_area->h)
return;
y += work_area->h;
_buffer->text->GetRowNearY(y);
fl_set_slider_value(scrollbar, y);
ScrollCB(scrollbar,(long)this);
}
int BufferView::work_area_handler(FL_OBJECT * ob, int event,
FL_Coord, FL_Coord ,
int /*key*/, void *xev)
{
static int x_old = -1;
static int y_old = -1;
static long scrollbar_value_old = -1;
XEvent* ev = (XEvent*) xev;
BufferView *view = (BufferView*) ob->u_vdata;
// If we don't have a view yet; return
if (!view || quitting) return 0;
switch (event){
case FL_DRAW:
view->workAreaExpose();
break;
case FL_PUSH:
view->WorkAreaButtonPress(ob, 0,0,0,ev,0);
break;
case FL_RELEASE:
view->WorkAreaButtonRelease(ob, 0,0,0,ev,0);
break;
case FL_MOUSE:
if (ev->xmotion.x != x_old ||
ev->xmotion.y != y_old ||
view->current_scrollbar_value != scrollbar_value_old) {
x_old = ev->xmotion.x;
y_old = ev->xmotion.y;
scrollbar_value_old = view->current_scrollbar_value;
view->WorkAreaMotionNotify(ob, 0,0,0,ev,0);
}
break;
// Done by the raw callback:
// case FL_KEYBOARD: WorkAreaKeyPress(ob, 0,0,0,ev,0); break;
case FL_FOCUS:
if (!view->_owner->getMiniBuffer()->shows_no_match)
view->_owner->getMiniBuffer()->Init();
view->_owner->getMiniBuffer()->shows_no_match = false;
view->work_area_focus = true;
fl_set_timer(view->timer_cursor, 0.4);
break;
case FL_UNFOCUS:
view->_owner->getMiniBuffer()->ExecCommand();
view->work_area_focus = false;
break;
case FL_ENTER:
SetXtermCursor(view->_owner->getForm()->window);
// reset the timer
view->lyx_focus = true;
fl_set_timer(view->timer_cursor, 0.4);
break;
case FL_LEAVE:
if (!input_prohibited)
XUndefineCursor(fl_display,
view->_owner->getForm()->window);
view->lyx_focus = false; // This is not an absolute truth
// but if it is not true, it will be changed within a blink
// of an eye. ... Not good enough... use regulare timeperiod
//fl_set_timer(view->timer_cursor, 0.01); // 0.1 sec blink
fl_set_timer(view->timer_cursor, 0.4); // 0.4 sec blink
break;
case FL_DBLCLICK:
// select a word
if (view->_buffer && !view->_buffer->the_locking_inset) {
if (view->screen && ev->xbutton.button == 1) {
view->screen->HideCursor();
view->screen->ToggleSelection();
view->_buffer->text->SelectWord();
view->screen->ToggleSelection(false);
/* This will fit the cursor on the screen
* if necessary */
view->_buffer->update(0);
}
}
break;
case FL_TRPLCLICK:
// select a line
if (view->_buffer && view->screen && ev->xbutton.button == 1) {
view->screen->HideCursor();
view->screen->ToggleSelection();
view->_buffer->text->CursorHome();
view->_buffer->text->sel_cursor =
view->_buffer->text->cursor;
view->_buffer->text->CursorEnd();
view->_buffer->text->SetSelection();
view->screen->ToggleSelection(false);
/* This will fit the cursor on the screen
* if necessary */
view->_buffer->update(0);
}
break;
case FL_OTHER:
view->WorkAreaSelectionNotify(ob,
view->_owner->getForm()->window,
0,0,ev,0);
break;
}
return 1;
}
int BufferView::WorkAreaMotionNotify(FL_OBJECT *ob, Window,
int /*w*/, int /*h*/,
XEvent *ev, void */*d*/)
{
if (_buffer == 0) return 0;
if (!screen) return 0;
// Check for inset locking
if (_buffer->the_locking_inset) {
LyXCursor cursor = _buffer->text->cursor;
_buffer->the_locking_inset->
InsetMotionNotify(ev->xbutton.x - ob->x - cursor.x,
ev->xbutton.y - ob->y -
(cursor.y),
ev->xbutton.state);
return 0;
}
// Only use motion with button 1
if (!ev->xmotion.state & Button1MotionMask)
return 0;
/* The selection possible is needed, that only motion events are
* used, where the bottom press event was on the drawing area too */
if (selection_possible) {
screen->HideCursor();
_buffer->text->
SetCursorFromCoordinates(ev->xbutton.x - ob->x,
ev->xbutton.y - ob->y +
screen->first);
if (!_buffer->text->selection)
_buffer->update(-3); // Maybe an empty line was deleted
_buffer->text->SetSelection();
screen->ToggleToggle();
if (screen->FitCursor())
updateScrollbar();
screen->ShowCursor();
}
return 0;
}
extern int bibitemMaxWidth(const class LyXFont &);
// Single-click on work area
int BufferView::WorkAreaButtonPress(FL_OBJECT *ob, Window,
int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
{
last_click_x = -1;
last_click_y = -1;
if (_buffer == 0) return 0;
if (!screen) return 0;
int const x = ev->xbutton.x - ob->x;
int const y = ev->xbutton.y - ob->y;
// If we hit an inset, we have the inset coordinates in these
// and inset_hit points to the inset. If we do not hit an
// inset, inset_hit is 0, and inset_x == x, inset_y == y.
int inset_x = x;
int inset_y = y;
Inset * inset_hit = checkInsetHit(inset_x, inset_y);
// ok ok, this is a hack.
int button = ev->xbutton.button;
if (button == 4 || button == 5) goto wheel;
{
if (_buffer->the_locking_inset) {
// We are in inset locking mode
/* Check whether the inset was hit. If not reset mode,
otherwise give the event to the inset */
if (inset_hit != 0) {
_buffer->the_locking_inset->
InsetButtonPress(inset_x, inset_y, button);
return 0;
} else {
UnlockInset(_buffer->the_locking_inset);
}
}
selection_possible = true;
screen->HideCursor();
// Right button mouse click on a table
if (button == 3 &&
(_buffer->text->cursor.par->table ||
_buffer->text->MouseHitInTable(x, y+screen->first))) {
// Set the cursor to the press-position
_buffer->text->SetCursorFromCoordinates(x, y + screen->first);
bool doit = true;
// Only show the table popup if the hit is in the table, too
if (!_buffer->text->HitInTable(_buffer->text->cursor.row, x))
doit = false;
// Hit above or below the table?
if (doit) {
if (!_buffer->text->selection) {
screen->ToggleSelection();
_buffer->text->ClearSelection();
_buffer->text->FullRebreak();
screen->Update();
updateScrollbar();
}
// Popup table popup when on a table.
// This is obviously temporary, since we should be
// able to
// popup various context-sensitive-menus with the
// the right mouse. So this should be done more
// general in the future. Matthias.
selection_possible = false;
_owner->getLyXFunc()->Dispatch(LFUN_LAYOUT_TABLE,
"true");
return 0;
}
}
int screen_first = screen->first;
// Middle button press pastes if we have a selection
bool paste_internally = false;
if (button == 2 // && !_buffer->the_locking_inset
&& _buffer->text->selection) {
_owner->getLyXFunc()->Dispatch(LFUN_COPY);
paste_internally = true;
}
// Clear the selection
screen->ToggleSelection();
_buffer->text->ClearSelection();
_buffer->text->FullRebreak();
screen->Update();
updateScrollbar();
// Single left click in math inset?
if (inset_hit != 0 && inset_hit->Editable() == 2) {
// Highly editable inset, like math
selection_possible = false;
_owner->updateLayoutChoice();
_owner->getMiniBuffer()->Set(inset_hit->EditMessage());
inset_hit->Edit(inset_x, inset_y);
return 0;
}
// Right click on a footnote flag opens float menu
if (button == 3) {
selection_possible = false;
return 0;
}
_buffer->text->SetCursorFromCoordinates(x, y + screen_first);
_buffer->text->FinishUndo();
_buffer->text->sel_cursor = _buffer->text->cursor;
_buffer->text->cursor.x_fix = _buffer->text->cursor.x;
_owner->updateLayoutChoice();
if (screen->FitCursor()){
updateScrollbar();
selection_possible = false;
}
// Insert primary selection with middle mouse
// if there is a local selection in the current buffer, insert this
if (button == 2) { // && !_buffer->the_locking_inset){
if (paste_internally)
_owner->getLyXFunc()->Dispatch(LFUN_PASTE);
else
_owner->getLyXFunc()->Dispatch(LFUN_PASTESELECTION,
"paragraph");
selection_possible = false;
return 0;
}
}
goto out;
wheel: {
// I am not quite sure if this is the correct place to put this,
// but it will not cause any harm.
// Patch from Mark Huang (markman@mit.edu) to make LyX recognise
// button 4 and 5. This enables LyX use use the scrollwhell on
// certain mice for something useful. (Lgb)
// Added wheel acceleration detection code. (Rvdk)
static Time lastTime = 0;
int diff = ev->xbutton.time - lastTime;
int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
switch (button) {
case 4:
ScrollUp(scroll);
break;
case 5:
ScrollDown(scroll);
break;
}
lastTime = ev->xbutton.time;
return 0;
}
out:
last_click_x = x;
last_click_y = y;
return 0;
}
int BufferView::WorkAreaButtonRelease(FL_OBJECT *ob, Window ,
int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
{
if (_buffer == 0 || screen == 0) return 0;
int const x = ev->xbutton.x - ob->x;
int const y = ev->xbutton.y - ob->y;
// If we hit an inset, we have the inset coordinates in these
// and inset_hit points to the inset. If we do not hit an
// inset, inset_hit is 0, and inset_x == x, inset_y == y.
int inset_x = x;
int inset_y = y;
Inset * inset_hit = checkInsetHit(inset_x, inset_y);
if (_buffer->the_locking_inset) {
// We are in inset locking mode.
/* LyX does a kind of work-area grabbing for insets.
Only a ButtonPress Event outside the inset will
force a InsetUnlock. */
_buffer->the_locking_inset->
InsetButtonRelease(inset_x, inset_y,
ev->xbutton.button);
return 0;
}
selection_possible = false;
if (_buffer->text->cursor.par->table) {
int cell = _buffer->text->
NumberOfCell(_buffer->text->cursor.par,
_buffer->text->cursor.pos);
if (_buffer->text->cursor.par->table->IsContRow(cell) &&
_buffer->text->cursor.par->table->
CellHasContRow(_buffer->text->cursor.par->table->
GetCellAbove(cell))<0) {
_buffer->text->CursorUp();
}
}
if (ev->xbutton.button >= 2)
return 0;
// Make sure that the press was not far from the release
if ((abs(last_click_x - x) >= 5) ||
(abs(last_click_y - y) >= 5)) {
return 0;
}
// Did we hit an editable inset?
if (inset_hit != 0) {
// Inset like error, notes and figures
selection_possible = false;
#ifdef WITH_WARNINGS
#warning fix this proper in 0.13
#endif
// Following a ref shouldn't issue
// a push on the undo-stack
// anylonger, now that we have
// keybindings for following
// references and returning from
// references. IMHO though, it
// should be the inset's own business
// to push or not push on the undo
// stack. They don't *have* to
// alter the document...
// (Joacim)
// ...or maybe the SetCursorParUndo()
// below isn't necessary at all anylonger?
if (inset_hit->LyxCode() == Inset::REF_CODE) {
_buffer->text->SetCursorParUndo();
}
_owner->getMiniBuffer()->Set(inset_hit->EditMessage());
inset_hit->Edit(inset_x, inset_y);
return 0;
}
// check whether we want to open a float
if (_buffer->text) {
bool hit = false;
char c = ' ';
if (_buffer->text->cursor.pos <
_buffer->text->cursor.par->Last()) {
c = _buffer->text->cursor.par->
GetChar(_buffer->text->cursor.pos);
}
if (c == LYX_META_FOOTNOTE || c == LYX_META_MARGIN
|| c == LYX_META_FIG || c == LYX_META_TAB
|| c == LYX_META_WIDE_FIG || c == LYX_META_WIDE_TAB
|| c == LYX_META_ALGORITHM){
hit = true;
} else if (_buffer->text->cursor.pos - 1 >= 0) {
c = _buffer->text->cursor.par->
GetChar(_buffer->text->cursor.pos - 1);
if (c == LYX_META_FOOTNOTE || c == LYX_META_MARGIN
|| c == LYX_META_FIG || c == LYX_META_TAB
|| c == LYX_META_WIDE_FIG
|| c == LYX_META_WIDE_TAB
|| c == LYX_META_ALGORITHM){
// We are one step too far to the right
_buffer->text->CursorLeft();
hit = true;
}
}
if (hit == true) {
ToggleFloat();
selection_possible = false;
return 0;
}
}
// Do we want to close a float? (click on the float-label)
if (_buffer->text->cursor.row->par->footnoteflag ==
LyXParagraph::OPEN_FOOTNOTE
&& _buffer->text->cursor.pos == 0
&& _buffer->text->cursor.row->previous &&
_buffer->text->cursor.row->previous->par->
footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
LyXFont font (LyXFont::ALL_SANE);
font.setSize(LyXFont::SIZE_SMALL);
int box_x = 20; // LYX_PAPER_MARGIN;
box_x += font.textWidth("Mwide-figM", 10);
int screen_first = screen->first;
if (x < box_x
&& y + screen_first > _buffer->text->cursor.y -
_buffer->text->cursor.row->baseline
&& y + screen_first < _buffer->text->cursor.y -
_buffer->text->cursor.row->baseline
+ font.maxAscent()*1.2 + font.maxDescent()*1.2) {
ToggleFloat();
selection_possible = false;
return 0;
}
}
// Maybe we want to edit a bibitem ale970302
if (_buffer->text->cursor.par->bibkey && x < 20 +
bibitemMaxWidth(lyxstyle.TextClass(_buffer->
params.textclass)->defaultfont)) {
_buffer->text->cursor.par->bibkey->Edit(0, 0);
}
return 0;
}
/*
* Returns an inset if inset was hit. 0 otherwise.
* If hit, the coordinates are changed relative to the inset.
* Otherwise coordinates are not changed, and false is returned.
*/
Inset * BufferView::checkInsetHit(int &x, int &y)
{
if (!getScreen())
return 0;
int y_tmp = y + getScreen()->first;
LyXCursor cursor = _buffer->text->cursor;
if (cursor.pos < cursor.par->Last()
&& cursor.par->GetChar(cursor.pos) == LYX_META_INSET
&& cursor.par->GetInset(cursor.pos)
&& cursor.par->GetInset(cursor.pos)->Editable()) {
// Check whether the inset really was hit
Inset* tmpinset = cursor.par->GetInset(cursor.pos);
LyXFont font = _buffer->text->GetFont(cursor.par, cursor.pos);
if (x > cursor.x
&& x < cursor.x + tmpinset->Width(font)
&& y_tmp > cursor.y - tmpinset->Ascent(font)
&& y_tmp < cursor.y + tmpinset->Descent(font)) {
x = x - cursor.x;
// The origin of an inset is on the baseline
y = y_tmp - (cursor.y);
return tmpinset;
}
} else if (cursor.pos - 1 >= 0
&& cursor.par->GetChar(cursor.pos - 1) == LYX_META_INSET
&& cursor.par->GetInset(cursor.pos - 1)
&& cursor.par->GetInset(cursor.pos - 1)->Editable()) {
_buffer->text->CursorLeft();
Inset * result = checkInsetHit(x, y);
if (result == 0) {
_buffer->text->CursorRight();
return 0;
} else {
return result;
}
}
return 0;
}
int BufferView::workAreaExpose()
{
if (!work_area || !work_area->form->visible)
return 1;
// this is a hack to ensure that we only call this through
// BufferView::redraw().
if (!lgb_hack) {
redraw();
}
static int work_area_width = work_area->w;
static int work_area_height = work_area->h;
bool widthChange = work_area->w != work_area_width;
bool heightChange = work_area->h != work_area_height;
// update from work area
work_area_width = work_area->w;
work_area_height = work_area->h;
if (_buffer != 0) {
if (widthChange) {
// All buffers need a resize
bufferlist.resize();
} else if (heightChange) {
// Rebuild image of current screen
updateScreen();
// fitCursor() ensures we don't jump back
// to the start of the document on vertical
// resize
fitCursor();
// The main window size has changed, repaint most stuff
redraw();
// ...including the minibuffer
_owner->getMiniBuffer()->Init();
} else if (screen) screen->Redraw();
} else {
// Grey box when we don't have a buffer
fl_winset(FL_ObjWin(work_area));
fl_rectangle(1, work_area->x, work_area->y,
work_area->w, work_area->h, FL_GRAY63);
}
// always make sure that the scrollbar is sane.
updateScrollbar();
_owner->updateLayoutChoice();
return 1;
}
// Callback for cursor timer
void BufferView::CursorToggleCB(FL_OBJECT *ob, long)
{
BufferView *view = (BufferView*) ob->u_vdata;
/* quite a nice place for asyncron Inset updating, isn't it? */
// actually no! This is run even if no buffer exist... so (Lgb)
if (view && !view->_buffer) {
goto set_timer_and_return;
}
#ifdef WITH_WARNINGS
#warning NOTE!
#endif
// On my quest to solve the gs rendre hangups I am now
// disabling the SIGHUP completely, and will do a wait
// now and then instead. If the guess that xforms somehow
// destroys something is true, this is likely (hopefully)
// to solve the problem...at least I hope so. Lgb
// ...Ok this seems to work...at least it does not make things
// worse so far. However I still see gs processes that hangs.
// I would really like to know _why_ they are hanging. Anyway
// the solution without the SIGCHLD handler seems to be easier
// to debug.
// When attaching gdb to a a running gs that hangs it shows
// that it is waiting for input(?) Is it possible for us to
// provide that input somehow? Or figure what it is expecing
// to read?
// One solution is to, after some time, look if there are some
// old gs processes still running and if there are: kill them
// and re render.
// Another solution is to provide the user an option to rerender
// a picture. This would, for the picture in question, check if
// there is a gs running for it, if so kill it, and start a new
// rendering process.
// these comments posted to lyx@via
//#if 0
{
int status = 1;
int pid = waitpid((pid_t)0, &status, WNOHANG);
if (pid == -1) // error find out what is wrong
; // ignore it for now.
else if (pid > 0)
sigchldhandler(pid, &status);
}
//#endif
if (InsetUpdateList)
UpdateInsetUpdateList();
if (view && !view->screen){
goto set_timer_and_return;
}
if (view->lyx_focus && view->work_area_focus) {
if (!view->_buffer->the_locking_inset){
view->screen->CursorToggle();
} else {
view->_buffer->the_locking_inset->
ToggleInsetCursor();
}
goto set_timer_and_return;
} else {
// Make sure that the cursor is visible.
if (!view->_buffer->the_locking_inset){
view->screen->ShowCursor();
} else {
if (!view->_buffer->the_locking_inset->isCursorVisible())
view->_buffer->the_locking_inset->
ToggleInsetCursor();
}
// This is only run when work_area_focus or lyx_focus is false.
Window tmpwin;
int tmp;
XGetInputFocus(fl_display, &tmpwin, &tmp);
if (lyxerr.debugging()) {
lyxerr << "tmpwin: " << tmpwin
<< "\nwindow: " << view->_owner->getForm()->window
<< "\nwork_area_focus: " << view->work_area_focus
<< "\nlyx_focus : " << view->lyx_focus
<< endl;
}
if (tmpwin != view->_owner->getForm()->window) {
view->lyx_focus = false;
goto skip_timer;
} else {
view->lyx_focus = true;
if (!view->work_area_focus)
goto skip_timer;
else
goto set_timer_and_return;
}
}
set_timer_and_return:
fl_set_timer(ob, 0.4);
skip_timer:
return;
}
int BufferView::WorkAreaSelectionNotify(FL_OBJECT *, Window win,
int /*w*/, int /*h*/, XEvent *event, void */*d*/)
{
if (_buffer == 0) return 0;
if (event->type != SelectionNotify)
return 0;
Atom tmpatom;
unsigned long ul1;
unsigned long ul2;
unsigned char* uc = 0;
int tmpint;
screen->HideCursor();
BeforeChange();
if (event->xselection.type == XA_STRING
&& event->xselection.property) {
if (XGetWindowProperty(
fl_display /* display */,
win /* w */,
event->xselection.property /* property */,
0 /* long_offset */,
0 /* long_length */,
false /* delete */,
XA_STRING /* req_type */,
&tmpatom /* actual_type_return */,
&tmpint /* actual_format_return */,
&ul1 /* nitems_return */,
&ul2 /* bytes_after_return */,
&uc /* prop_return */
) != Success) {
return 0;
}
XFlush(fl_display);
if (uc){
free(uc);
uc = 0;
}
if (XGetWindowProperty(
fl_display /* display */,
win /* w */,
event->xselection.property /* property */,
0 /* long_offset */,
ul2/4+1 /* long_length */,
True /* delete */,
XA_STRING /* req_type */,
&tmpatom /* actual_type_return */,
&tmpint /* actual_format_return */,
&ul1 /* nitems_return */,
&ul2 /* bytes_after_return */,
&uc /* prop_return */
) != Success) {
return 0;
}
XFlush(fl_display);
if (uc){
if (!ascii_type)
_buffer->text->
InsertStringA((char*)uc);
else
_buffer->text->
InsertStringB((char*)uc);
free(uc);
uc = 0;
}
_buffer->update(1);
}
return 0;
}
void BufferView::cursorPrevious()
{
if (!currentBuffer()->text->cursor.row->previous) return;
long y = getScreen()->first;
Row* cursorrow = currentBuffer()->text->cursor.row;
currentBuffer()->text->
SetCursorFromCoordinates(currentBuffer()->text->
cursor.x_fix,
y);
currentBuffer()->text->FinishUndo();
/* this is to allow jumping over large insets */
if ((cursorrow == currentBuffer()->text->cursor.row))
currentBuffer()->text->CursorUp();
if (currentBuffer()->text->cursor.row->height < work_area->h)
getScreen()->Draw(currentBuffer()->text->cursor.y
- currentBuffer()->text->cursor.row->baseline
+ currentBuffer()->text->cursor.row->height
- work_area->h +1 );
}
void BufferView::cursorNext()
{
if (!currentBuffer()->text->cursor.row->next) return;
long y = getScreen()->first;
currentBuffer()->text->GetRowNearY(y);
Row* cursorrow = currentBuffer()->text->cursor.row;
currentBuffer()->text->
SetCursorFromCoordinates(currentBuffer()->text->
cursor.x_fix,
y + work_area->h);
currentBuffer()->text->FinishUndo();
/* this is to allow jumping over large insets */
if ((cursorrow == currentBuffer()->text->cursor.row))
currentBuffer()->text->CursorDown();
if (currentBuffer()->text->cursor.row->height < work_area->h)
getScreen()->Draw(currentBuffer()->text->cursor.y
- currentBuffer()->text->cursor.row->baseline);
}
bool BufferView::available() const
{
if (_buffer && _buffer->text) return true;
return false;
}
void BufferView::savePosition()
{
backstack->push(currentBuffer()->getFileName(),
currentBuffer()->text->cursor.x,
currentBuffer()->text->cursor.y);
}
void BufferView::restorePosition()
{
if (backstack->empty()) return;
int x, y;
string fname = backstack->pop(&x, &y);
BeforeChange();
Buffer *b = (bufferlist.exists(fname)) ? bufferlist.getBuffer(fname):
bufferlist.loadLyXFile(fname); // don't ask, just load it
setBuffer(b);
currentBuffer()->text->SetCursorFromCoordinates(x, y);
currentBuffer()->update(0);
}
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