/**
* \file screen.C
- * Copyright 2002 the LyX Team
- * Read the file COPYING
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * \author John Levon <moz@compsoc.man.ac.uk>
+ * \author John Levon
+ *
+ * Full author contact details are available in file CREDITS.
+ *
+ * Splash screen code added by Angus Leeming
*/
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
#include <config.h>
#include "screen.h"
-#include "lyxtext.h"
-#include "lyxrow.h"
+#include "font_metrics.h"
+#include "lyx_gui.h"
+#include "Painter.h"
+#include "WorkArea.h"
+
#include "BufferView.h"
#include "buffer.h"
-#include "WorkArea.h"
-#include "Painter.h"
-#include "font_metrics.h"
-#include "language.h"
+#include "bufferparams.h"
+#include "coordcache.h"
+#include "cursor.h"
#include "debug.h"
+#include "language.h"
+#include "LColor.h"
+#include "lyxfont.h"
+#include "lyxrc.h"
+#include "lyxrow.h"
+#include "lyxtext.h"
+#include "metricsinfo.h"
+#include "paragraph.h"
+#include "rowpainter.h"
+#include "version.h"
+
+#include "graphics/GraphicsImage.h"
+#include "graphics/GraphicsLoader.h"
+
+#include "support/filetools.h" // LibFileSearch
+
+#include <boost/utility.hpp>
+#include <boost/bind.hpp>
+#include <boost/signals/trackable.hpp>
+using lyx::support::LibFileSearch;
+
+using std::endl;
using std::min;
using std::max;
-using std::endl;
+using std::string;
+
+
+namespace {
+
+class SplashScreen : boost::noncopyable, boost::signals::trackable {
+public:
+ /// This is a singleton class. Get the instance.
+ static SplashScreen const & get();
+ ///
+ lyx::graphics::Image const * image() const { return loader_.image(); }
+ ///
+ string const & text() const { return text_; }
+ ///
+ LyXFont const & font() const { return font_; }
+ ///
+ void connect(lyx::graphics::Loader::slot_type const & slot) const {
+ loader_.connect(slot);
+ }
+ ///
+ void startLoading() const {
+ if (loader_.status() == lyx::graphics::WaitingToLoad)
+ loader_.startLoading();
+ }
+private:
+ /** Make the c-tor private so we can control how many objects
+ * are instantiated.
+ */
+ SplashScreen();
-LyXScreen::LyXScreen()
- : force_clear_(true), cursor_visible_(false)
-{
-}
+ ///
+ lyx::graphics::Loader loader_;
+ /// The text to be written on top of the pixmap
+ string const text_;
+ /// in this font...
+ LyXFont font_;
+};
-LyXScreen::~LyXScreen()
+SplashScreen const & SplashScreen::get()
{
+ static SplashScreen singleton;
+ return singleton;
}
-// FIXME: GUII these cursor methods need to decide
-// whether the workarea is focused or not
-void LyXScreen::showCursor(LyXText const * text, BufferView const * bv)
+SplashScreen::SplashScreen()
+ : text_(lyx_version ? lyx_version : "unknown")
{
- if (cursor_visible_)
+ if (!lyxrc.show_banner)
return;
-
- workarea().getPainter().start();
-
- Cursor_Shape shape = BAR_SHAPE;
- BufferParams const & bp(bv->buffer()->params);
- LyXFont const & realfont(text->real_current_font);
-
- if (realfont.language() != bp.language
- || realfont.isVisibleRightToLeft()
- != bp.language->RightToLeft()) {
- shape = (realfont.isVisibleRightToLeft())
- ? REVERSED_L_SHAPE : L_SHAPE;
- }
-
- showManualCursor(text, text->cursor.x(), text->cursor.y(),
- font_metrics::maxAscent(realfont),
- font_metrics::maxDescent(realfont),
- shape);
-
- workarea().getPainter().end();
+
+ string const file = LibFileSearch("images", "banner", "ppm");
+ if (file.empty())
+ return;
+
+ // The font used to display the version info
+ font_.setFamily(LyXFont::SANS_FAMILY);
+ font_.setSeries(LyXFont::BOLD_SERIES);
+ font_.setSize(LyXFont::SIZE_NORMAL);
+ font_.setColor(LColor::yellow);
+
+ // Load up the graphics file
+ loader_.reset(file);
}
+} // namespace anon
-bool LyXScreen::fitManualCursor(BufferView * bv, LyXText * text,
- int /*x*/, int y, int asc, int desc)
+
+LyXScreen::LyXScreen()
+ : greyed_out_(true), cursor_visible_(false)
{
- int const vheight = workarea().workHeight();
- int newtop = text->first_y;
-
- if (y + desc - text->first_y >= vheight)
- newtop = y - 3 * vheight / 4; // the scroll region must be so big!!
- else if (y - asc < text->first_y
- && text->first_y > 0) {
- newtop = y - vheight / 4;
+ // Start loading the pixmap as soon as possible
+ if (lyxrc.show_banner) {
+ SplashScreen const & splash = SplashScreen::get();
+ splash.connect(boost::bind(&LyXScreen::checkAndGreyOut, this));
+ splash.startLoading();
}
+}
- newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
-
- if (newtop != text->first_y) {
- draw(text, bv, newtop);
- text->first_y = newtop;
- return true;
- }
- return false;
+
+LyXScreen::~LyXScreen()
+{
}
-void LyXScreen::cursorToggle(BufferView * bv) const
+void LyXScreen::checkAndGreyOut()
{
- if (cursor_visible_)
- bv->hideCursor();
- else
- bv->showCursor();
+ if (greyed_out_)
+ greyOut();
}
-unsigned int LyXScreen::topCursorVisible(LyXCursor const & cursor, int top_y)
+void LyXScreen::showCursor(BufferView & bv)
{
- int const vheight = workarea().workHeight();
- int newtop = top_y;
-
- Row * row = cursor.row();
-
- // Is this a hack? Yes, probably... (Lgb)
- if (!row)
- return max(newtop, 0);
-
- if (cursor.y() - row->baseline() + row->height()
- - top_y >= vheight) {
- if (row->height() < vheight
- && row->height() > vheight / 4) {
- newtop = cursor.y()
- + row->height()
- - row->baseline() - vheight;
- } else {
- // scroll down
- newtop = cursor.y()
- - vheight / 2; /* the scroll region must be so big!! */
- }
-
- } else if (static_cast<int>((cursor.y()) - row->baseline()) <
- top_y && top_y > 0) {
- if (row->height() < vheight
- && row->height() > vheight / 4) {
- newtop = cursor.y() - row->baseline();
- } else {
- // scroll up
- newtop = cursor.y() - vheight / 2;
- newtop = min(newtop, top_y);
- }
- }
+ if (cursor_visible_)
+ return;
- newtop = max(newtop, 0);
+ if (!bv.available())
+ return;
- return newtop;
-}
+ Cursor_Shape shape = BAR_SHAPE;
+ LyXText const & text = *bv.getLyXText();
+ LyXFont const & realfont = text.real_current_font;
+ BufferParams const & bp = bv.buffer()->params();
+ bool const samelang = realfont.language() == bp.language;
+ bool const isrtl = realfont.isVisibleRightToLeft();
-bool LyXScreen::fitCursor(LyXText * text, BufferView * bv)
-{
- // Is a change necessary?
- int const newtop = topCursorVisible(text->cursor, text->first_y);
- bool const result = (newtop != text->first_y);
- if (result)
- draw(text, bv, newtop);
- return result;
+ 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 = 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 -= asc;
+ //lyxerr << "LyXScreen::showCursor x: " << x << " y: " << y << endl;
+
+ // if it doesn't touch the screen, don't try to show it
+ if (y + h < 0 || y >= workarea().workHeight())
+ return;
+
+ cursor_visible_ = true;
+ showCursor(x, y, h, shape);
}
-
-void LyXScreen::update(LyXText * text, BufferView * bv,
- int yo, int xo)
+
+void LyXScreen::hideCursor()
{
- int const vwidth = workarea().workWidth();
- int const vheight = workarea().workHeight();
+ if (!cursor_visible_)
+ return;
- workarea().getPainter().start();
-
- switch (text->status()) {
- case LyXText::NEED_MORE_REFRESH:
- {
- int const y = max(int(text->refresh_y - text->first_y), 0);
- drawFromTo(text, bv, y, vheight, yo, xo);
- text->refresh_y = 0;
- // otherwise this is called ONLY from BufferView_pimpl(update)
- // or we should see to set this flag accordingly
- if (text != bv->text)
- text->status(bv, LyXText::UNCHANGED);
- expose(0, y, vwidth, vheight - y);
- }
- break;
- case LyXText::NEED_VERY_LITTLE_REFRESH:
- {
- // ok I will update the current cursor row
- drawOneRow(text, bv, text->refresh_row, text->refresh_y,
- yo, xo);
- // this because if we had a major update the refresh_row could
- // have been set to 0!
- if (text->refresh_row) {
- // otherwise this is called ONLY from BufferView_pimpl(update)
- // or we should see to set this flag accordingly
- if (text != bv->text)
- text->status(bv, LyXText::UNCHANGED);
- expose(0, text->refresh_y - text->first_y + yo,
- vwidth, text->refresh_row->height());
- }
- }
- break;
- case LyXText::CHANGED_IN_DRAW: // just to remove the warning
- case LyXText::UNCHANGED:
- // Nothing needs done
- break;
- }
-
- workarea().getPainter().end();
+ cursor_visible_ = false;
+ removeCursor();
}
-void LyXScreen::toggleSelection(LyXText * text, BufferView * bv,
- bool kill_selection,
- int yo, int xo)
+void LyXScreen::toggleCursor(BufferView & bv)
{
- // only if there is a selection
- if (!text->selection.set()) return;
-
- int const bottom = min(
- max(static_cast<int>(text->selection.end.y()
- - text->selection.end.row()->baseline()
- + text->selection.end.row()->height()),
- text->first_y),
- static_cast<int>(text->first_y + workarea().workHeight()));
- int const top = min(
- max(static_cast<int>(text->selection.start.y() -
- text->selection.start.row()->baseline()),
- text->first_y),
- static_cast<int>(text->first_y + workarea().workHeight()));
-
- if (kill_selection)
- text->selection.set(false);
-
- workarea().getPainter().start();
-
- drawFromTo(text, bv, top - text->first_y, bottom - text->first_y,
- yo, xo);
- expose(0, top - text->first_y,
- workarea().workWidth(),
- bottom - text->first_y - (top - text->first_y));
-
- workarea().getPainter().end();
+ if (cursor_visible_)
+ hideCursor();
+ else
+ showCursor(bv);
}
-
-
-void LyXScreen::toggleToggle(LyXText * text, BufferView * bv,
- int yo, int xo)
-{
- if (text->toggle_cursor.par() == text->toggle_end_cursor.par()
- && text->toggle_cursor.pos() == text->toggle_end_cursor.pos())
- return;
-
- int const top_tmp = text->toggle_cursor.y()
- - text->toggle_cursor.row()->baseline();
- int const bottom_tmp = text->toggle_end_cursor.y()
- - text->toggle_end_cursor.row()->baseline()
- + text->toggle_end_cursor.row()->height();
-
- int const offset = yo < 0 ? yo : 0;
- int const bottom = min(max(bottom_tmp, text->first_y),
- static_cast<int>(text->first_y + workarea().workHeight())) - offset;
- int const top = min(max(top_tmp, text->first_y),
- static_cast<int>(text->first_y + workarea().workHeight())) - offset;
- workarea().getPainter().start();
- drawFromTo(text, bv, top - text->first_y,
- bottom - text->first_y, yo,
- xo);
- expose(0, top - text->first_y, workarea().workWidth(),
- bottom - text->first_y - (top - text->first_y));
-
- workarea().getPainter().end();
+void LyXScreen::prepareCursor()
+{
+ cursor_visible_ = false;
}
-void LyXScreen::redraw(LyXText * text, BufferView * bv)
+void LyXScreen::redraw(BufferView & bv, ViewMetricsInfo const & vi)
{
+ greyed_out_ = false;
workarea().getPainter().start();
-
- if (!text) {
- greyOut();
- expose(0, 0, workarea().workWidth(), workarea().workHeight());
- workarea().getPainter().end();
- return;
- }
-
- drawFromTo(text, bv, 0, workarea().workHeight(), 0, 0, text == bv->text);
+ paintText(bv, vi);
+ lyxerr[Debug::DEBUG] << "Redraw screen" << endl;
expose(0, 0, workarea().workWidth(), workarea().workHeight());
-
workarea().getPainter().end();
-
- if (cursor_visible_) {
- cursor_visible_ = false;
- bv->showCursor();
- }
+ theCoords.doneUpdating();
}
void LyXScreen::greyOut()
{
+ greyed_out_ = true;
+ workarea().getPainter().start();
+
workarea().getPainter().fillRectangle(0, 0,
workarea().workWidth(),
workarea().workHeight(),
LColor::bottomarea);
-// FIXME: pending GUIIzation / cleanup of graphics cache.
-// We should be using something like this.
-#if 0
- static bool first = true;
- if (first) {
- first = false;
-
- splash_file_ = (lyxrc.show_banner) ?
- LibFileSearch("images", "banner", "xpm") : string();
- if (splash_file_) {
- grfx::GCache & gc = grfx::GCache::get();
- gc.add(splash_file_);
- gc.startLoading(splash_file_);
- }
- }
-
// Add a splash screen to the centre of the work area
- grfx::GCache & gc = grfx::GCache::get();
- grfx::ImagePtr const splash = gc.image(splash_file_);
- if (splash.get()) {
- int const w = splash->getWidth();
- int const h = splash->getHeight();
-
- int const x = 0.5 * (workarea().workWidth() - w);
- int const y = 0.5 * (workarea().workHeight() - h);
+ SplashScreen const & splash = SplashScreen::get();
+ lyx::graphics::Image const * const splash_image = splash.image();
+ if (splash_image) {
+ int const w = splash_image->getWidth();
+ int const h = splash_image->getHeight();
- workarea().getPainter().image(x, y, w, h, splash->getPixmap());
- }
-#endif
-// Alternatively, we should compile this into the code.
-// I think that that is better here (so that the pixmap is displayed on
-// start-up).
-// Would need a new method
-// virtual Pixmap splashPixmap() = 0;
-// or some such.
-// Angus 21 June 2002
-}
-
-
-void LyXScreen::drawFromTo(LyXText * text, BufferView * bv,
- int y1, int y2, int yo, int xo,
- bool internal)
-{
- lyxerr[Debug::GUI] << "screen: drawFromTo " << y1 << "-" << y2 << endl;
-
- int y_text = text->first_y + y1;
-
- // get the first needed row
- Row * row = text->getRowNearY(y_text);
- // y_text is now the real beginning of the row
-
- int y = y_text - text->first_y;
- // y1 is now the real beginning of row on the screen
-
- while (row != 0 && y < y2) {
- LyXText::text_status st = text->status();
- text->getVisibleRow(bv, y + yo,
- xo, row, y + text->first_y);
- internal = internal && (st != LyXText::CHANGED_IN_DRAW);
- while (internal && text->status() == LyXText::CHANGED_IN_DRAW) {
- text->fullRebreak(bv);
- st = LyXText::NEED_MORE_REFRESH;
- text->setCursor(bv, text->cursor.par(), text->cursor.pos());
- text->status(bv, st);
- text->getVisibleRow(bv, y + yo,
- xo, row, y + text->first_y);
- }
- y += row->height();
- row = row->next();
- }
- force_clear_ = false;
-
- // maybe we have to clear the screen at the bottom
- if ((y < y2) && text->bv_owner) {
- workarea().getPainter().fillRectangle(0, y,
- workarea().workWidth(), y2 - y,
- LColor::bottomarea);
- }
-}
+ int x = (workarea().workWidth() - w) / 2;
+ int y = (workarea().workHeight() - h) / 2;
+ workarea().getPainter().image(x, y, w, h, *splash_image);
-void LyXScreen::drawOneRow(LyXText * text, BufferView * bv, Row * row,
- int y_text, int yo, int xo)
-{
- int const y = y_text - text->first_y + yo;
+ x += 260;
+ y += 265;
- if (((y + row->height()) > 0) &&
- ((y - row->height()) <= static_cast<int>(workarea().workHeight()))) {
- text->getVisibleRow(bv, y, xo, row, y + text->first_y);
+ workarea().getPainter().text(x, y, splash.text(), splash.font());
}
- force_clear_ = false;
+ expose(0, 0, workarea().workWidth(), workarea().workHeight());
+ workarea().getPainter().end();
}
projects / lyx.git / blobdiff