3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
10 * Splash screen code added by Angus Leeming
16 #include "font_metrics.h"
21 #include "BufferView.h"
23 #include "bufferparams.h"
24 #include "coordcache.h"
33 #include "metricsinfo.h"
34 #include "paragraph.h"
35 #include "rowpainter.h"
38 #include "insets/updatableinset.h"
40 #include "graphics/GraphicsImage.h"
41 #include "graphics/GraphicsLoader.h"
43 #include "support/filetools.h" // LibFileSearch
45 #include <boost/utility.hpp>
46 #include <boost/bind.hpp>
47 #include <boost/signals/trackable.hpp>
49 using lyx::support::LibFileSearch;
59 class SplashScreen : boost::noncopyable, boost::signals::trackable {
61 /// This is a singleton class. Get the instance.
62 static SplashScreen const & get();
64 lyx::graphics::Image const * image() const { return loader_.image(); }
66 string const & text() const { return text_; }
68 LyXFont const & font() const { return font_; }
70 void connect(lyx::graphics::Loader::slot_type const & slot) const {
71 loader_.connect(slot);
74 void startLoading() const {
75 if (loader_.status() == lyx::graphics::WaitingToLoad)
76 loader_.startLoading();
80 /** Make the c-tor private so we can control how many objects
86 lyx::graphics::Loader loader_;
87 /// The text to be written on top of the pixmap
94 SplashScreen const & SplashScreen::get()
96 static SplashScreen singleton;
101 SplashScreen::SplashScreen()
102 : text_(lyx_version ? lyx_version : "unknown")
104 if (!lyxrc.show_banner)
107 string const file = LibFileSearch("images", "banner", "ppm");
111 // The font used to display the version info
112 font_.setFamily(LyXFont::SANS_FAMILY);
113 font_.setSeries(LyXFont::BOLD_SERIES);
114 font_.setSize(LyXFont::SIZE_NORMAL);
115 font_.setColor(LColor::yellow);
117 // Load up the graphics file
124 LyXScreen::LyXScreen()
125 : greyed_out_(true), cursor_visible_(false)
127 // Start loading the pixmap as soon as possible
128 if (lyxrc.show_banner) {
129 SplashScreen const & splash = SplashScreen::get();
130 splash.connect(boost::bind(&LyXScreen::checkAndGreyOut, this));
131 splash.startLoading();
136 LyXScreen::~LyXScreen()
141 void LyXScreen::checkAndGreyOut()
148 void LyXScreen::showCursor(BufferView & bv)
150 // You are not expected to understand this. This forces Qt
151 // (the problem case) to deal with its event queue. This is
152 // necessary when holding down a key such as 'page down' or
153 // just typing: without this processing of the event queue,
154 // the cursor gets ahead of itself without a selection or
155 // workarea redraw having a chance to keep up. If you think
156 // you can remove this, try selecting text with the mouse
157 // in Qt, or holding Page Down on the User's Guide.
158 lyx_gui::sync_events();
166 Cursor_Shape shape = BAR_SHAPE;
168 LyXText const & text = *bv.getLyXText();
169 LyXFont const & realfont = text.real_current_font;
170 BufferParams const & bp = bv.buffer()->params();
171 bool const samelang = realfont.language() == bp.language;
172 bool const isrtl = realfont.isVisibleRightToLeft();
174 if (!samelang || isrtl != bp.language->RightToLeft()) {
177 shape = REVERSED_L_SHAPE;
180 // The ERT language hack needs fixing up
181 if (realfont.language() == latex_language)
184 LyXFont const font = bv.cursor().getFont();
185 int const asc = font_metrics::maxAscent(font);
186 int const des = font_metrics::maxDescent(font);
190 bv.cursor().getPos(x, y);
192 //lyxerr << "LyXScreen::showCursor x: " << x << " y: " << y << endl;
194 // if it doesn't touch the screen, don't try to show it
195 if (y + h < 0 || y >= workarea().workHeight())
198 cursor_visible_ = true;
199 showCursor(x, y, h, shape);
203 void LyXScreen::hideCursor()
205 if (!cursor_visible_)
208 cursor_visible_ = false;
213 void LyXScreen::toggleCursor(BufferView & bv)
222 void LyXScreen::redraw(BufferView & bv, ViewMetricsInfo const & vi)
225 workarea().getPainter().start();
228 lyxerr[Debug::DEBUG] << "Redraw screen" << endl;
229 expose(0, 0, workarea().workWidth(), workarea().workHeight());
230 workarea().getPainter().end();
231 theCoords.doneUpdating();
236 void LyXScreen::greyOut()
239 workarea().getPainter().start();
241 workarea().getPainter().fillRectangle(0, 0,
242 workarea().workWidth(),
243 workarea().workHeight(),
246 // Add a splash screen to the centre of the work area
247 SplashScreen const & splash = SplashScreen::get();
248 lyx::graphics::Image const * const splash_image = splash.image();
250 int const w = splash_image->getWidth();
251 int const h = splash_image->getHeight();
253 int x = (workarea().workWidth() - w) / 2;
254 int y = (workarea().workHeight() - h) / 2;
256 workarea().getPainter().image(x, y, w, h, *splash_image);
261 workarea().getPainter().text(x, y, splash.text(), splash.font());
263 expose(0, 0, workarea().workWidth(), workarea().workHeight());
264 workarea().getPainter().end();