3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
14 #include "XWorkArea.h"
17 #include "XFormsView.h"
18 #include "XLyXKeySym.h"
21 #include "funcrequest.h"
25 #include <boost/bind.hpp>
38 inline void waitForX(bool discard)
40 XSync(fl_get_display(), discard);
44 mouse_button::state x_button_state(unsigned int button)
46 mouse_button::state b = mouse_button::none;
49 b = mouse_button::button1;
52 b = mouse_button::button2;
55 b = mouse_button::button3;
58 b = mouse_button::button4;
61 b = mouse_button::button5;
68 key_modifier::state x_key_state(unsigned int state)
70 key_modifier::state k = key_modifier::none;
71 if (state & ControlMask)
72 k |= key_modifier::ctrl;
73 if (state & ShiftMask)
74 k |= key_modifier::shift;
76 k |= key_modifier::alt;
83 void C_scroll_cb(FL_OBJECT * ob, long)
85 XWorkArea * area = static_cast<XWorkArea *>(ob->u_vdata);
90 int C_work_area_handler(FL_OBJECT * ob, int event, FL_Coord, FL_Coord,
93 return XWorkArea::work_area_handler(ob, event, 0, 0, key, xev);
97 int C_event_cb(FL_FORM * form, void * xev)
99 XWorkArea * area = static_cast<XWorkArea *>(form->u_vdata);
100 return area->event_cb(static_cast<XEvent *>(xev));
107 XWorkArea::XWorkArea(LyXView & owner, int w, int h)
108 : workareapixmap(0), painter_(*this)
110 fl_freeze_all_forms();
115 // A frame around the work area.
116 frame = obj = fl_add_box(FL_BORDER_BOX, 0, 0, w, h, "");
117 fl_set_object_resize(obj, FL_RESIZE_ALL);
118 fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
120 unsigned int r, g, b;
121 if (getRGBColor(LColor::background, r, g, b)) {
122 fl_mapcolor(FL_FREE_COL12, r, g, b);
123 fl_set_object_color(obj, FL_FREE_COL12, FL_MCOL);
127 scrollbar = obj = fl_add_scrollbar(FL_VERT_SCROLLBAR, 0, 0, w, h, "");
128 fl_set_object_boxtype(obj, FL_UP_BOX);
129 fl_set_object_resize(obj, FL_RESIZE_ALL);
130 fl_set_object_gravity(obj, NorthEastGravity, SouthEastGravity);
132 fl_set_object_callback(obj, C_scroll_cb, 0);
133 fl_set_scrollbar_bounds(scrollbar, 0.0, 0.0);
134 fl_set_scrollbar_value(scrollbar, 0.0);
135 fl_set_scrollbar_size(scrollbar, scrollbar->h);
137 // The work area itself
138 work_area = obj = fl_add_free(FL_ALL_FREE, 0, 0, w, h, "",
139 C_work_area_handler);
140 obj->wantkey = FL_KEY_ALL;
143 fl_set_object_boxtype(obj,FL_DOWN_BOX);
144 fl_set_object_resize(obj, FL_RESIZE_ALL);
145 fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
147 // Hand control of the layout of these widgets to the
149 XFormsView & xview = dynamic_cast<XFormsView &>(owner);
150 BoxList & boxlist = xview.getBox(XFormsView::Center).children();
152 wa_box_ = &boxlist.push_back(Box(0,0));
153 wa_box_->set(Box::Horizontal);
155 Box & frame_box = widgets_.add(frame, wa_box_->children(), 0, 0);
156 frame_box.set(Box::Expand);
158 int const bw = int(abs(fl_get_border_width()));
159 Box & wa_box = embed(work_area, frame_box.children(), widgets_, bw);
160 wa_box.set(Box::Expand);
162 widgets_.add(scrollbar, wa_box_->children(), 17, 0);
164 xview.metricsUpdated.connect(boost::bind(&WidgetMap::updateMetrics,
167 /// X selection hook - xforms gets it wrong
168 fl_current_form->u_vdata = this;
169 fl_register_raw_callback(fl_current_form, FL_ALL_EVENT, C_event_cb);
171 fl_unfreeze_all_forms();
175 val.function = GXcopy;
176 val.graphics_exposures = false;
177 copy_gc = XCreateGC(fl_get_display(), RootWindow(fl_get_display(), 0),
178 GCFunction | GCGraphicsExposures, &val);
182 XWorkArea::~XWorkArea()
184 XFreeGC(fl_get_display(), copy_gc);
186 XFreePixmap(fl_get_display(), workareapixmap);
190 void XWorkArea::updateGeometry(int width, int height)
192 static int cur_width = -1;
193 static int cur_height = -1;
195 if (cur_width == width && cur_height == height && workareapixmap)
201 if (lyxerr.debugging(Debug::WORKAREA)) {
202 lyxerr << "(Re)creating pixmap ("
203 << width << 'x' << height << ')' << endl;
206 if (workareapixmap) {
207 XFreePixmap(fl_get_display(), workareapixmap);
210 workareapixmap = XCreatePixmap(fl_get_display(),
211 RootWindow(fl_get_display(), 0),
214 fl_get_visual_depth());
220 void XWorkArea::paint(int x, int y, int w, int h)
222 lyxerr[Debug::WORKAREA]
223 << "XWorkarea::paint " << w << 'x' << h
224 << '+' << x << '+' << y << endl;
226 updateGeometry(workWidth(), workHeight());
227 XCopyArea(fl_get_display(),
228 getPixmap(), getWin(),
230 work_area->x + x, work_area->y + y);
234 void XWorkArea::setScrollbarParams(int height, int pos, int line_height)
236 // we need to cache this for scroll_cb
237 doc_height_ = height;
240 fl_set_scrollbar_value(scrollbar, 0.0);
241 fl_set_scrollbar_size(scrollbar, scrollbar->h);
245 long const work_height = workHeight();
247 if (lyxerr.debugging(Debug::GUI)) {
248 lyxerr << "scroll: height now " << height << '\n'
249 << "scroll: work_height " << work_height << endl;
252 /* If the text is smaller than the working area, the scrollbar
253 * maximum must be the working area height. No scrolling will
255 if (height <= work_height) {
256 lyxerr[Debug::GUI] << "scroll: doc smaller than workarea !"
258 fl_set_scrollbar_bounds(scrollbar, 0.0, 0.0);
259 fl_set_scrollbar_value(scrollbar, pos);
260 fl_set_scrollbar_size(scrollbar, scrollbar->h);
264 fl_set_scrollbar_bounds(scrollbar, 0.0, height - work_height);
265 fl_set_scrollbar_increment(scrollbar, work_area->h - line_height, line_height);
267 fl_set_scrollbar_value(scrollbar, pos);
269 double const slider_size =
270 (height == 0) ? 1.0 : 1.0 / double(height);
272 fl_set_scrollbar_size(scrollbar, scrollbar->h * slider_size);
276 // callback for scrollbar slider
277 void XWorkArea::scroll_cb()
279 double const val = fl_get_scrollbar_value(scrollbar);
281 if (lyxerr.debugging(Debug::GUI)) {
282 lyxerr << "scroll: val: " << val << '\n'
283 << "scroll: height: " << scrollbar->h << '\n'
284 << "scroll: docheight: " << doc_height_ << endl;
287 scrollDocView(int(val));
292 int XWorkArea::work_area_handler(FL_OBJECT * ob, int event,
296 XEvent * ev = static_cast<XEvent*>(xev);
297 XWorkArea * area = static_cast<XWorkArea*>(ob->u_vdata);
305 if (!area->work_area || !area->work_area->form->visible)
309 lyxerr[Debug::WORKAREA]
310 << "work_area_handler, handling X11 "
312 << ev->xexpose.width << 'x'
313 << ev->xexpose.height << '+'
314 << ev->xexpose.x << '+'
315 << ev->xexpose.y << endl;
317 // X11 generates XEvents with x, y relative to the
318 // top left corner of the window.
319 // XScreen::expose emulates this behaviour.
320 // We therefore need to remove this offset before
321 // generating the pixmap.
322 int const x = ev->xexpose.x - ob->x;
323 int const y = ev->xexpose.y - ob->y;
326 ev->xexpose.width, ev->xexpose.height);
329 area->workWidth(), area->workHeight());
335 if (!ev || ev->xbutton.button == 0) break;
336 // Should really have used xbutton.state
337 lyxerr[Debug::WORKAREA] << "Workarea event: PUSH" << endl;
339 FuncRequest(LFUN_MOUSE_PRESS,
340 ev->xbutton.x - ob->x,
341 ev->xbutton.y - ob->y,
342 x_button_state(key)));
346 if (!ev || ev->xbutton.button == 0) break;
347 // Should really have used xbutton.state
348 lyxerr[Debug::WORKAREA] << "Workarea event: RELEASE" << endl;
350 FuncRequest(LFUN_MOUSE_RELEASE,
351 ev->xbutton.x - ob->x,
352 ev->xbutton.y - ob->y,
353 x_button_state(key)));
357 if (!ev || !area->scrollbar)
360 int const drag_x = ev->xmotion.x;
361 int const drag_y = ev->xmotion.y;
362 int const area_y = ob->y;
363 int const area_h = ob->h;
365 // Check if the mouse is above or below the workarea
366 if (drag_y <= area_y || drag_y >= area_y + area_h) {
367 // The mouse button is depressed and we are outside the
368 // workarea. That means we are simultaneously selecting
369 // text and scrolling the view.
370 // Use a Timeout to react to a drag events only every
371 // 200ms. All intervening events are discarded,
372 // allowing the user to control position easily.
373 static int const discard_interval = 200;
374 static Timeout timeout(discard_interval);
376 if (timeout.running())
378 // The timeout is not running, so process the
379 // event, first starting the timeout to discard future
384 static int x_old = -1;
385 static int y_old = -1;
386 static double scrollbar_value_old = -1.0;
388 double const scrollbar_value =
389 fl_get_scrollbar_value(area->scrollbar);
391 if (drag_x != x_old || drag_y != y_old ||
392 scrollbar_value != scrollbar_value_old) {
395 scrollbar_value_old = scrollbar_value;
397 lyxerr[Debug::WORKAREA] << "Workarea event: DRAG"
400 // It transpires that ev->xbutton.button == 0 when
401 // the mouse is dragged, so it cannot be used to
402 // initialise x_button_state and hence FuncRequest.
404 // The 'key' that is passed into the function does
405 // contain the necessary info, however.
407 // It is for this reason that x_button_state has
408 // been modified to work with key
409 // rather than ev->xbutton.button.
411 // Angus 15 Oct 2002.
412 FuncRequest cmd(LFUN_MOUSE_MOTION,
413 ev->xbutton.x - ob->x,
414 ev->xbutton.y - ob->y,
415 x_button_state(key));
422 lyxerr[Debug::WORKAREA] << "Workarea event: KEYPRESS" << endl;
426 XKeyEvent * xke = reinterpret_cast<XKeyEvent *>(ev);
427 XLookupString(xke, dummy, 1, &keysym, 0);
429 if (lyxerr.debugging(Debug::KEY)) {
430 char const * const tmp = XKeysymToString(key);
431 char const * const tmp2 = XKeysymToString(keysym);
432 string const stm = (tmp ? tmp : string());
433 string const stm2 = (tmp2 ? tmp2 : string());
435 lyxerr << "XWorkArea: Key is `" << stm
436 << "' [" << key << "]\n"
437 << "XWorkArea: Keysym is `" << stm2
438 << "' [" << keysym << ']' << endl;
441 // Note that we need this handling because of a bug
442 // in XForms 0.89, if this bug is resolved in the way I hope
443 // we can just use the keysym directly without looking
444 // at key at all. (Lgb)
447 // We might have to add more keysyms here also,
448 // we will do that as the issues arise. (Lgb)
449 if (keysym == XK_space) {
451 lyxerr[Debug::KEY] << "Using keysym [A]"
456 // It seems that this was a bit optimistic...
457 // With this hacking things seems to be better (Lgb)
458 //if (!iscntrl(key)) {
460 // lyxerr[Debug::KEY]
461 // << "Using key [B]\n"
463 // << static_cast<unsigned char>(key)
466 ret_key = (keysym ? keysym : key);
467 lyxerr[Debug::KEY] << "Using keysym [B]"
472 unsigned int const ret_state = xke->state;
474 // If you have a better way to handle "wild-output" of
475 // characters after the key has been released than the one
476 // below, please contact me. (Lgb)
477 static Time last_time_pressed;
478 static unsigned int last_key_pressed;
479 static unsigned int last_state_pressed;
480 lyxerr[Debug::KEY] << "Workarea Diff: "
481 << xke->time - last_time_pressed
483 if (xke->time - last_time_pressed < 25 // should perhaps be tunable
484 && ret_state == last_state_pressed
485 && xke->keycode == last_key_pressed) {
487 << "Workarea: Purging X events." << endl;
488 //lyxerr << "Workarea Events: "
489 // << XEventsQueued(fl_get_display(), QueuedAlready)
491 if (XEventsQueued(fl_get_display(), QueuedAlready) > 0)
493 // This purge make f.ex. scrolling stop immediately when
494 // releasing the PageDown button. The question is if
495 // this purging of XEvents can cause any harm...
496 // after some testing I can see no problems, but
497 // I'd like other reports too.
500 last_time_pressed = xke->time;
501 last_key_pressed = xke->keycode;
502 last_state_pressed = ret_state;
504 XLyXKeySym * xlk = new XLyXKeySym;
505 xlk->initFromKeySym(ret_key);
507 area->workAreaKeyPress(LyXKeySymPtr(xlk),
508 x_key_state(ret_state));
513 lyxerr[Debug::WORKAREA] << "Workarea event: KEYRELEASE" << endl;
517 lyxerr[Debug::WORKAREA] << "Workarea event: ENTER" << endl;
518 fl_set_cursor(FL_ObjWin(area->work_area), XC_xterm);
522 lyxerr[Debug::WORKAREA] << "Workarea event: LEAVE" << endl;
523 // There should be no need for this. But there is.
524 fl_set_cursor(FL_ObjWin(area->work_area), FL_DEFAULT_CURSOR);
529 lyxerr[Debug::WORKAREA] << "Workarea event: DBLCLICK" << endl;
530 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
531 ev->xbutton.x - ob->x,
532 ev->xbutton.y - ob->y,
533 x_button_state(key));
540 lyxerr[Debug::WORKAREA] << "Workarea event: TRPLCLICK" << endl;
541 FuncRequest cmd(LFUN_MOUSE_TRIPLE,
542 ev->xbutton.x - ob->x,
543 ev->xbutton.y - ob->y,
544 x_button_state(key));
551 lyxerr[Debug::WORKAREA] << "Workarea event: OTHER" << endl;
561 string clipboard_selection;
562 bool clipboard_read = false;
566 int request_clipboard_cb(FL_OBJECT * /*ob*/, long /*type*/,
567 void const * data, long size)
569 clipboard_selection.erase();
572 clipboard_selection.reserve(size);
573 for (int i = 0; i < size; ++i)
574 clipboard_selection += static_cast<char const *>(data)[i];
575 clipboard_read = true;
583 int XWorkArea::event_cb(XEvent * xev)
586 case SelectionRequest:
587 lyxerr[Debug::GUI] << "X requested selection." << endl;
588 selectionRequested();
591 lyxerr[Debug::GUI] << "Lost selection." << endl;
599 void XWorkArea::haveSelection(bool yes) const
601 Window const owner = yes ? FL_ObjWin(work_area) : None;
602 XSetSelectionOwner(fl_get_display(), XA_PRIMARY, owner, CurrentTime);
606 string const XWorkArea::getClipboard() const
608 clipboard_read = false;
610 if (fl_request_clipboard(work_area, 0, request_clipboard_cb) == -1)
615 while (!clipboard_read) {
616 if (fl_check_forms() == FL_EVENT) {
618 lyxerr << "Received unhandled X11 event\n"
619 << "Type: 0x" << hex << ev.xany.type
620 << " Target: 0x" << hex << ev.xany.window
624 return clipboard_selection;
628 void XWorkArea::putClipboard(string const & s) const
633 fl_stuff_clipboard(work_area, 0, hold.data(), hold.size(), 0);
636 } // namespace frontend