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);
149 ViewMetricsInfo const & vi = buffer_view_->viewMetricsInfo();
152 LYXERR(Debug::WORKAREA) << "WorkArea::redraw screen" << endl;
154 int const ymin = std::max(vi.y1, 0);
155 int const ymax = vi.p2 < vi.size - 1 ? vi.y2 : height();
157 expose(0, ymin, width(), ymax - ymin);
159 //LYXERR(Debug::WORKAREA)
160 //<< " ymin = " << ymin << " width() = " << width()
161 // << " ymax-ymin = " << ymax-ymin << std::endl;
163 if (lyxerr.debugging(Debug::WORKAREA))
164 buffer_view_->coordCache().dump();
168 void WorkArea::processKeySym(KeySymbolPtr key, key_modifier::state state)
170 // In order to avoid bad surprise in the middle of an operation, we better stop
171 // the blinking cursor.
172 stopBlinkingCursor();
174 theLyXFunc().setLyXView(&lyx_view_);
175 theLyXFunc().processKeySym(key, state);
177 /* When we move around, or type, it's nice to be able to see
178 * the cursor immediately after the keypress.
180 startBlinkingCursor();
184 void WorkArea::dispatch(FuncRequest const & cmd0, key_modifier::state k)
187 if (cmd0.action == LFUN_FILE_OPEN) {
188 lyx_view_.dispatch(cmd0);
192 theLyXFunc().setLyXView(&lyx_view_);
196 if (cmd0.action == LFUN_MOUSE_PRESS) {
197 if (k == key_modifier::shift)
198 cmd = FuncRequest(cmd0, "region-select");
199 else if (k == key_modifier::ctrl)
200 cmd = FuncRequest(cmd0, "paragraph-select");
207 // In order to avoid bad surprise in the middle of an operation, we better stop
208 // the blinking cursor.
209 if (!(cmd.action == LFUN_MOUSE_MOTION
210 && cmd.button() == mouse_button::none))
211 stopBlinkingCursor();
213 bool const needRedraw = buffer_view_->workAreaDispatch(cmd);
218 // Skip these when selecting
219 if (cmd.action != LFUN_MOUSE_MOTION) {
220 lyx_view_.updateLayoutChoice();
221 lyx_view_.updateMenubar();
222 lyx_view_.updateToolbars();
225 // GUI tweaks except with mouse motion with no button pressed.
226 if (!(cmd.action == LFUN_MOUSE_MOTION
227 && cmd.button() == mouse_button::none)) {
228 // Slight hack: this is only called currently when we
229 // clicked somewhere, so we force through the display
230 // of the new status here.
231 lyx_view_.clearMessage();
233 // Show the cursor immediately after any operation.
234 startBlinkingCursor();
239 void WorkArea::resizeBufferView()
241 lyx_view_.busy(true);
242 lyx_view_.message(_("Formatting document..."));
243 buffer_view_->workAreaResize(width(), height());
244 lyx_view_.updateLayoutChoice();
245 lyx_view_.clearMessage();
246 lyx_view_.busy(false);
250 void WorkArea::updateScrollbar()
252 buffer_view_->updateScrollbar();
253 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
254 setScrollbarParams(scroll_.height, scroll_.position,
255 scroll_.lineScrollHeight);
259 void WorkArea::scrollBufferView(int position)
261 stopBlinkingCursor();
262 buffer_view_->scrollDocView(position);
264 if (lyxrc.cursor_follows_scrollbar) {
265 buffer_view_->setCursorFromScrollbar();
266 lyx_view_.updateLayoutChoice();
268 // Show the cursor immediately after any operation.
269 startBlinkingCursor();
273 void WorkArea::showCursor()
278 if (!buffer_view_->buffer())
281 CursorShape shape = BAR_SHAPE;
283 Text const & text = *buffer_view_->cursor().innerText();
284 Font const & realfont = text.real_current_font;
285 BufferParams const & bp = buffer_view_->buffer()->params();
286 bool const samelang = realfont.language() == bp.language;
287 bool const isrtl = realfont.isVisibleRightToLeft();
289 if (!samelang || isrtl != bp.language->rightToLeft()) {
292 shape = REVERSED_L_SHAPE;
295 // The ERT language hack needs fixing up
296 if (realfont.language() == latex_language)
299 Font const font = buffer_view_->cursor().getFont();
300 FontMetrics const & fm = theFontMetrics(font);
301 int const asc = fm.maxAscent();
302 int const des = fm.maxDescent();
306 buffer_view_->cursor().getPos(x, y);
309 // if it doesn't touch the screen, don't try to show it
310 if (y + h < 0 || y >= height())
313 cursor_visible_ = true;
314 showCursor(x, y, h, shape);
318 void WorkArea::hideCursor()
320 if (!cursor_visible_)
323 cursor_visible_ = false;
328 void WorkArea::toggleCursor()
330 if (buffer_view_->buffer()) {
337 // Use this opportunity to deal with any child processes that
338 // have finished but are waiting to communicate this fact
339 // to the rest of LyX.
340 ForkedcallsController & fcc = ForkedcallsController::get();
341 fcc.handleCompletedProcesses();
344 cursor_timeout_.restart();
348 void WorkArea::displayMessage(lyx::docstring const & message)
350 lyx_view_.message(message);
353 } // namespace frontend