3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Abdelrazak Younes
9 * Full author contact details are available in file CREDITS.
11 * Splash screen code added by Angus Leeming
16 #include "frontends/WorkArea.h"
18 #include "frontends/Application.h"
19 #include "frontends/FontMetrics.h"
21 #include "funcrequest.h"
25 #include "BufferView.h"
27 #include "bufferparams.h"
28 #include "coordcache.h"
38 #include "metricsinfo.h"
39 #include "paragraph.h"
40 #include "rowpainter.h"
43 #include "support/filetools.h" // LibFileSearch
44 #include "support/forkedcontr.h"
46 #include <boost/utility.hpp>
47 #include <boost/bind.hpp>
48 #include <boost/current_function.hpp>
50 using lyx::support::libFileSearch;
51 using lyx::support::ForkedcallsController;
61 // All the below connection objects are needed because of a bug in some
62 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
63 // to these connections we avoid a segfault upon startup, and also at exit.
66 boost::signals::connection timecon;
73 WorkArea::WorkArea(int id, LyXView & lyx_view)
74 : buffer_view_(0), lyx_view_(lyx_view), greyed_out_(true),
75 cursor_visible_(false), cursor_timeout_(400), id_(id)
77 // Start loading the pixmap as soon as possible
78 //if (lyxrc.show_banner) {
83 timecon = cursor_timeout_.timeout
84 .connect(boost::bind(&WorkArea::toggleCursor, this));
86 cursor_timeout_.start();
90 void WorkArea::setBufferView(BufferView * buffer_view)
93 message_connection_.disconnect();
94 lyx_view_.disconnectBufferView();
97 theApp->setBufferView(buffer_view);
100 buffer_view_ = buffer_view;
103 message_connection_ = buffer_view_->message.connect(
104 boost::bind(&WorkArea::displayMessage, this, _1));
106 lyx_view_.connectBufferView(*buffer_view);
110 BufferView & WorkArea::bufferView()
112 return *buffer_view_;
116 BufferView const & WorkArea::bufferView() const
118 return *buffer_view_;
122 void WorkArea::checkAndGreyOut()
129 void WorkArea::redraw()
134 if (!buffer_view_->buffer()) {
139 buffer_view_->updateMetrics(false);
143 ViewMetricsInfo const & vi = buffer_view_->viewMetricsInfo();
146 lyxerr[Debug::WORKAREA] << "WorkArea::redraw screen" << endl;
147 int const ymin = std::max(vi.y1, 0);
148 int const ymax = vi.p2 < vi.size - 1 ? vi.y2 : height();
150 expose(0, ymin, width(), ymax - ymin);
152 //lyxerr[Debug::WORKAREA]
153 //<< " ymin = " << ymin << " width() = " << width()
154 // << " ymax-ymin = " << ymax-ymin << std::endl;
156 if (lyxerr.debugging(Debug::WORKAREA))
157 buffer_view_->coordCache().dump();
161 void WorkArea::processKeySym(LyXKeySymPtr key,
162 key_modifier::state state)
166 theLyXFunc().setLyXView(&lyx_view_);
167 theLyXFunc().processKeySym(key, state);
169 /* This is perhaps a bit of a hack. When we move
170 * around, or type, it's nice to be able to see
171 * the cursor immediately after the keypress. So
172 * we reset the toggle timeout and force the visibility
173 * of the cursor. Note we cannot do this inside
174 * dispatch() itself, because that's called recursively.
176 // if (buffer_view_->buffer())
181 void WorkArea::dispatch(FuncRequest const & cmd0)
184 if (cmd0.action == LFUN_FILE_OPEN) {
185 lyx_view_.dispatch(cmd0);
189 theLyXFunc().setLyXView(&lyx_view_);
191 buffer_view_->workAreaDispatch(cmd0);
193 // Skip these when selecting
194 if (cmd0.action != LFUN_MOUSE_MOTION) {
195 lyx_view_.updateLayoutChoice();
196 lyx_view_.updateMenubar();
197 lyx_view_.updateToolbars();
200 // Slight hack: this is only called currently when we
201 // clicked somewhere, so we force through the display
202 // of the new status here.
203 lyx_view_.clearMessage();
209 void WorkArea::resizeBufferView()
211 lyx_view_.busy(true);
212 lyx_view_.message(_("Formatting document..."));
213 buffer_view_->workAreaResize(width(), height());
214 lyx_view_.updateLayoutChoice();
216 lyx_view_.busy(false);
217 lyx_view_.clearMessage();
221 void WorkArea::updateScrollbar()
223 buffer_view_->updateScrollbar();
224 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
225 setScrollbarParams(scroll_.height, scroll_.position,
226 scroll_.lineScrollHeight);
230 void WorkArea::scrollBufferView(int position)
232 buffer_view_->scrollDocView(position);
235 if (lyxrc.cursor_follows_scrollbar) {
236 buffer_view_->setCursorFromScrollbar();
237 lyx_view_.updateLayoutChoice();
243 void WorkArea::greyOut()
250 void WorkArea::showCursor()
255 if (!buffer_view_->buffer())
258 CursorShape shape = BAR_SHAPE;
260 LyXText const & text = *buffer_view_->getLyXText();
261 LyXFont const & realfont = text.real_current_font;
262 BufferParams const & bp = buffer_view_->buffer()->params();
263 bool const samelang = realfont.language() == bp.language;
264 bool const isrtl = realfont.isVisibleRightToLeft();
266 if (!samelang || isrtl != bp.language->rightToLeft()) {
269 shape = REVERSED_L_SHAPE;
272 // The ERT language hack needs fixing up
273 if (realfont.language() == latex_language)
276 LyXFont const font = buffer_view_->cursor().getFont();
277 FontMetrics const & fm = theFontMetrics(font);
278 int const asc = fm.maxAscent();
279 int const des = fm.maxDescent();
283 buffer_view_->cursor().getPos(x, y);
286 // if it doesn't touch the screen, don't try to show it
287 if (y + h < 0 || y >= height())
290 cursor_visible_ = true;
291 showCursor(x, y, h, shape);
295 void WorkArea::hideCursor()
297 if (!cursor_visible_)
300 cursor_visible_ = false;
305 void WorkArea::toggleCursor()
307 if (buffer_view_->buffer()) {
314 // Use this opportunity to deal with any child processes that
315 // have finished but are waiting to communicate this fact
316 // to the rest of LyX.
317 ForkedcallsController & fcc = ForkedcallsController::get();
318 fcc.handleCompletedProcesses();
321 cursor_timeout_.restart();
325 void WorkArea::displayMessage(lyx::docstring const & message)
327 lyx_view_.message(message);
330 } // namespace frontend