#include "BufferView.h"
#include "buffer.h"
#include "bufferparams.h"
+#include "coordcache.h"
#include "cursor.h"
#include "debug.h"
#include "language.h"
LyXScreen::LyXScreen()
- : cursor_visible_(false), greyed_out_(true)
+ : greyed_out_(true), cursor_visible_(false)
{
// Start loading the pixmap as soon as possible
if (lyxrc.show_banner) {
SplashScreen const & splash = SplashScreen::get();
- splash.connect(boost::bind(&LyXScreen::greyOut, this));
+ splash.connect(boost::bind(&LyXScreen::checkAndGreyOut, this));
splash.startLoading();
}
}
}
+void LyXScreen::checkAndGreyOut()
+{
+ if (greyed_out_)
+ greyOut();
+}
+
+
void LyXScreen::showCursor(BufferView & bv)
{
- // this is needed to make sure we copy back the right
- // pixmap on the hide for the Qt frontend
+ // You are not expected to understand this. This forces Qt
+ // (the problem case) to deal with its event queue. This is
+ // necessary when holding down a key such as 'page down' or
+ // just typing: without this processing of the event queue,
+ // the cursor gets ahead of itself without a selection or
+ // workarea redraw having a chance to keep up. If you think
+ // you can remove this, try selecting text with the mouse
+ // in Qt, or holding Page Down on the User's Guide.
lyx_gui::sync_events();
if (cursor_visible_)
if (realfont.language() == latex_language)
shape = BAR_SHAPE;
- int ascent = font_metrics::maxAscent(realfont);
- int descent = font_metrics::maxDescent(realfont);
- int h = ascent + descent;
+ LyXFont const font = bv.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;
bv.cursor().getPos(x, y);
- y -= ascent + bv.top_y();
+ y -= asc;
//lyxerr << "LyXScreen::showCursor x: " << x << " y: " << y << endl;
- // if it doesn't fit entirely on the screen, don't try to show it
- if (y < 0 || y + h > workarea().workHeight())
+ // if it doesn't touch the screen, don't try to show it
+ if (y + h < 0 || y >= workarea().workHeight())
return;
cursor_visible_ = true;
}
-bool LyXScreen::fitCursor(BufferView * bv)
+void LyXScreen::redraw(BufferView & bv, ViewMetricsInfo const & vi)
{
- int const top_y = bv->top_y();
- int const h = workarea().workHeight();
- int newtop = top_y;
- int x, y, asc, desc;
-
- bv->cursor().getPos(x, y);
- bv->cursor().getDim(asc, desc);
- //lyxerr << "LyXScreen::fitCursor: x: " << x << " y: " << y
- // << " top_y: " << top_y << endl;
-
- bool const big_row = h / 4 < asc + desc && asc + desc < h;
-
- if (y + desc - top_y >= h) {
- if (big_row)
- newtop = y + desc - h;
- else
- newtop = y - h / 2;
-
- } else if (top_y > max(y - asc, 0)) {
- if (big_row)
- newtop = y - asc;
- else {
- newtop = y - h / 2;
- newtop = min(newtop, top_y);
- }
- }
-
- newtop = max(newtop, 0);
- if (newtop == top_y)
- return false;
-
- bv->top_y(newtop);
- return true;
-}
-
-
-void LyXScreen::redraw(BufferView & bv)
-{
- greyed_out_ = !bv.text();
-
- if (greyed_out_) {
- greyOut();
- return;
- }
-
+ greyed_out_ = false;
workarea().getPainter().start();
-
hideCursor();
-
- int const y = paintText(bv);
-
- // maybe we have to clear the screen at the bottom
- int const y2 = workarea().workHeight();
- if (y < y2 && !bv.text()->isInInset()) {
- workarea().getPainter().fillRectangle(0, y,
- workarea().workWidth(), y2 - y,
- LColor::bottomarea);
- }
-
- lyxerr << "Redraw screen" << endl;
-
+ paintText(bv, vi);
+ lyxerr[Debug::DEBUG] << "Redraw screen" << endl;
expose(0, 0, workarea().workWidth(), workarea().workHeight());
-
workarea().getPainter().end();
+ theCoords.doneUpdating();
+ showCursor(bv);
}
void LyXScreen::greyOut()
{
- if (!greyed_out_)
- return;
-
+ greyed_out_ = true;
workarea().getPainter().start();
workarea().getPainter().fillRectangle(0, 0,