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/ForkedcallsController.h"
45 #include <boost/utility.hpp>
46 #include <boost/bind.hpp>
47 #include <boost/current_function.hpp>
49 using lyx::support::ForkedcallsController;
59 // All the below connection objects are needed because of a bug in some
60 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
61 // to these connections we avoid a segfault upon startup, and also at exit.
64 boost::signals::connection timecon;
71 WorkArea::WorkArea(int id, LyXView & lyx_view)
72 : buffer_view_(0), lyx_view_(lyx_view), greyed_out_(true),
73 id_(id), cursor_visible_(false), cursor_timeout_(400)
75 // Start loading the pixmap as soon as possible
76 //if (lyxrc.show_banner) {
81 timecon = cursor_timeout_.timeout
82 .connect(boost::bind(&WorkArea::toggleCursor, this));
84 cursor_timeout_.start();
88 void WorkArea::setBufferView(BufferView * buffer_view)
91 message_connection_.disconnect();
92 lyx_view_.disconnectBufferView();
96 buffer_view_ = buffer_view;
99 message_connection_ = buffer_view_->message.connect(
100 boost::bind(&WorkArea::displayMessage, this, _1));
102 lyx_view_.connectBufferView(*buffer_view);
106 BufferView & WorkArea::bufferView()
108 return *buffer_view_;
112 BufferView const & WorkArea::bufferView() const
114 return *buffer_view_;
118 void WorkArea::stopBlinkingCursor()
120 cursor_timeout_.stop();
125 void WorkArea::startBlinkingCursor()
128 cursor_timeout_.restart();
132 void WorkArea::redraw()
134 if (!buffer_view_ || !buffer_view_->buffer()) {
136 // The argument here are meaningless.
141 // No need to do anything if this is the current view. The BufferView
142 // metrics are already up to date.
143 if (&lyx_view_ != theApp()->currentView()) {
144 // FIXME: it would be nice to optimize for the off-screen case.
145 buffer_view_->updateMetrics(false);
146 buffer_view_->cursor().fixIfBroken();
151 ViewMetricsInfo const & vi = buffer_view_->viewMetricsInfo();
154 LYXERR(Debug::WORKAREA) << "WorkArea::redraw screen" << endl;
156 int const ymin = std::max(vi.y1, 0);
157 int const ymax = vi.p2 < vi.size - 1 ? vi.y2 : height();
159 expose(0, ymin, width(), ymax - ymin);
161 //LYXERR(Debug::WORKAREA)
162 //<< " ymin = " << ymin << " width() = " << width()
163 // << " ymax-ymin = " << ymax-ymin << std::endl;
165 if (lyxerr.debugging(Debug::WORKAREA))
166 buffer_view_->coordCache().dump();
170 void WorkArea::processKeySym(KeySymbolPtr key, key_modifier::state state)
172 // In order to avoid bad surprise in the middle of an operation, we better stop
173 // the blinking cursor.
174 stopBlinkingCursor();
176 theLyXFunc().setLyXView(&lyx_view_);
177 theLyXFunc().processKeySym(key, state);
179 /* When we move around, or type, it's nice to be able to see
180 * the cursor immediately after the keypress.
182 startBlinkingCursor();
186 void WorkArea::dispatch(FuncRequest const & cmd0, key_modifier::state k)
189 if (cmd0.action == LFUN_FILE_OPEN) {
190 lyx_view_.dispatch(cmd0);
194 theLyXFunc().setLyXView(&lyx_view_);
198 if (cmd0.action == LFUN_MOUSE_PRESS) {
199 if (k == key_modifier::shift)
200 cmd = FuncRequest(cmd0, "region-select");
201 else if (k == key_modifier::ctrl)
202 cmd = FuncRequest(cmd0, "paragraph-select");
209 // In order to avoid bad surprise in the middle of an operation, we better stop
210 // the blinking cursor.
211 if (!(cmd.action == LFUN_MOUSE_MOTION
212 && cmd.button() == mouse_button::none))
213 stopBlinkingCursor();
215 bool const needRedraw = buffer_view_->workAreaDispatch(cmd);
220 // Skip these when selecting
221 if (cmd.action != LFUN_MOUSE_MOTION) {
222 lyx_view_.updateLayoutChoice();
223 lyx_view_.updateMenubar();
224 lyx_view_.updateToolbars();
227 // GUI tweaks except with mouse motion with no button pressed.
228 if (!(cmd.action == LFUN_MOUSE_MOTION
229 && cmd.button() == mouse_button::none)) {
230 // Slight hack: this is only called currently when we
231 // clicked somewhere, so we force through the display
232 // of the new status here.
233 lyx_view_.clearMessage();
235 // Show the cursor immediately after any operation.
236 startBlinkingCursor();
241 void WorkArea::resizeBufferView()
243 lyx_view_.busy(true);
244 lyx_view_.message(_("Formatting document..."));
245 buffer_view_->workAreaResize(width(), height());
246 lyx_view_.updateLayoutChoice();
247 lyx_view_.clearMessage();
248 lyx_view_.busy(false);
252 void WorkArea::updateScrollbar()
254 buffer_view_->updateScrollbar();
255 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
256 setScrollbarParams(scroll_.height, scroll_.position,
257 scroll_.lineScrollHeight);
261 void WorkArea::scrollBufferView(int position)
263 stopBlinkingCursor();
264 buffer_view_->scrollDocView(position);
266 if (lyxrc.cursor_follows_scrollbar) {
267 buffer_view_->setCursorFromScrollbar();
268 lyx_view_.updateLayoutChoice();
270 // Show the cursor immediately after any operation.
271 startBlinkingCursor();
275 void WorkArea::showCursor()
280 if (!buffer_view_->buffer())
283 CursorShape shape = BAR_SHAPE;
285 Text const & text = *buffer_view_->cursor().innerText();
286 Font const & realfont = text.real_current_font;
287 BufferParams const & bp = buffer_view_->buffer()->params();
288 bool const samelang = realfont.language() == bp.language;
289 bool const isrtl = realfont.isVisibleRightToLeft();
291 if (!samelang || isrtl != bp.language->rightToLeft()) {
294 shape = REVERSED_L_SHAPE;
297 // The ERT language hack needs fixing up
298 if (realfont.language() == latex_language)
301 Font const font = buffer_view_->cursor().getFont();
302 FontMetrics const & fm = theFontMetrics(font);
303 int const asc = fm.maxAscent();
304 int const des = fm.maxDescent();
308 buffer_view_->cursor().getPos(x, y);
311 // if it doesn't touch the screen, don't try to show it
312 if (y + h < 0 || y >= height())
315 cursor_visible_ = true;
316 showCursor(x, y, h, shape);
320 void WorkArea::hideCursor()
322 if (!cursor_visible_)
325 cursor_visible_ = false;
330 void WorkArea::toggleCursor()
332 if (buffer_view_->buffer()) {
339 // Use this opportunity to deal with any child processes that
340 // have finished but are waiting to communicate this fact
341 // to the rest of LyX.
342 ForkedcallsController & fcc = ForkedcallsController::get();
343 fcc.handleCompletedProcesses();
346 cursor_timeout_.restart();
350 void WorkArea::displayMessage(lyx::docstring const & message)
352 lyx_view_.message(message);
355 } // namespace frontend