#include "graphics/GraphicsLoader.h"
#include "support/filetools.h" // LibFileSearch
+#include "support/forkedcontr.h"
#include <boost/utility.hpp>
#include <boost/bind.hpp>
#include <boost/signals/trackable.hpp>
using lyx::support::libFileSearch;
+using lyx::support::ForkedcallsController;
using std::endl;
using std::min;
using std::string;
+namespace {
+
+// All the below connection objects are needed because of a bug in some
+// versions of GCC (<=2.96 are on the suspects list.) By having and assigning
+// to these connections we avoid a segfault upon startup, and also at exit.
+// (Lgb)
+
+boost::signals::connection timecon;
+
+} // anon namespace
+
namespace lyx {
namespace frontend {
}
WorkArea::WorkArea(BufferView * buffer_view)
- : buffer_view_(buffer_view), greyed_out_(true)
+ : buffer_view_(buffer_view), greyed_out_(true),
+ cursor_visible_(false), cursor_timeout_(400)
{
// Start loading the pixmap as soon as possible
if (lyxrc.show_banner) {
splash.connect(boost::bind(&WorkArea::checkAndGreyOut, this));
splash.startLoading();
}
+
+ // Setup the signals
+ timecon = cursor_timeout_.timeout
+ .connect(boost::bind(&WorkArea::toggleCursor, this));
+
+ cursor_timeout_.start();
}
}
-void WorkArea::redraw(BufferView & bv, ViewMetricsInfo const & vi)
+void WorkArea::redraw()
{
+ BOOST_ASSERT(buffer_view_);
+
+ if (!buffer_view_->buffer()) {
+ greyOut();
+ return;
+ }
+
+ if (!buffer_view_->needsRedraw())
+ return;
+
greyed_out_ = false;
- getPainter().start();
- paintText(*buffer_view_, vi);
+ ViewMetricsInfo const & vi = buffer_view_->viewMetricsInfo();
+
+ Painter & pain = getPainter();
+
+ pain.start();
+ paintText(*buffer_view_, vi, pain);
lyxerr[Debug::DEBUG] << "Redraw screen" << endl;
int const ymin = std::max(vi.y1, 0);
int const ymax =
( vi.p2 < vi.size - 1 ? vi.y2 : height() );
expose(0, ymin, width(), ymax - ymin);
- getPainter().end();
- theCoords.doneUpdating();
+ pain.end();
+ //theCoords.doneUpdating();
+ buffer_view_->needsRedraw(false);
+
+ if (lyxerr.debugging(Debug::DEBUG)) {
+ lyxerr[Debug::DEBUG]
+ << " ymin = " << ymin << " width() = " << width()
+ << " ymax-ymin = " << ymax-ymin << std::endl;
+ }
+}
+
+
+void WorkArea::processKeySym(LyXKeySymPtr key, key_modifier::state state)
+{
+ hideCursor();
+
+ buffer_view_->workAreaKeyPress(key, state);
+ /* This is perhaps a bit of a hack. When we move
+ * around, or type, it's nice to be able to see
+ * the cursor immediately after the keypress. So
+ * we reset the toggle timeout and force the visibility
+ * of the cursor. Note we cannot do this inside
+ * dispatch() itself, because that's called recursively.
+ */
+ // if (buffer_view_->available())
+ toggleCursor();
+
}
getPainter().end();
}
+
+void WorkArea::showCursor()
+{
+ if (cursor_visible_)
+ return;
+
+ if (!buffer_view_->available())
+ return;
+
+ CursorShape shape = BAR_SHAPE;
+
+ LyXText const & text = *buffer_view_->getLyXText();
+ LyXFont const & realfont = text.real_current_font;
+ BufferParams const & bp = buffer_view_->buffer()->params();
+ bool const samelang = realfont.language() == bp.language;
+ bool const isrtl = realfont.isVisibleRightToLeft();
+
+ if (!samelang || isrtl != bp.language->rightToLeft()) {
+ shape = L_SHAPE;
+ if (isrtl)
+ shape = REVERSED_L_SHAPE;
+ }
+
+ // The ERT language hack needs fixing up
+ if (realfont.language() == latex_language)
+ shape = BAR_SHAPE;
+
+ LyXFont const font = buffer_view_->cursor().getFont();
+ int const asc = font_metrics::maxAscent(font);
+ int const des = font_metrics::maxDescent(font);
+ int h = asc + des;
+ int x = 0;
+ int y = 0;
+ buffer_view_->cursor().getPos(x, y);
+ y -= asc;
+
+ // if it doesn't touch the screen, don't try to show it
+ if (y + h < 0 || y >= height())
+ return;
+
+ cursor_visible_ = true;
+ showCursor(x, y, h, shape);
+}
+
+
+void WorkArea::hideCursor()
+{
+ if (!cursor_visible_)
+ return;
+
+ cursor_visible_ = false;
+ removeCursor();
+}
+
+
+void WorkArea::toggleCursor()
+{
+ if (buffer_view_->buffer()) {
+
+ if (cursor_visible_)
+ hideCursor();
+ else
+ showCursor();
+
+ // Use this opportunity to deal with any child processes that
+ // have finished but are waiting to communicate this fact
+ // to the rest of LyX.
+ ForkedcallsController & fcc = ForkedcallsController::get();
+ fcc.handleCompletedProcesses();
+ }
+
+ cursor_timeout_.restart();
+}
+
+
} // namespace frontend
} // namespace lyx