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"
32 #include "metricsinfo.h"
33 #include "paragraph.h"
34 #include "rowpainter.h"
37 #include "insets/updatableinset.h"
39 #include "graphics/GraphicsImage.h"
40 #include "graphics/GraphicsLoader.h"
42 #include "support/filetools.h" // LibFileSearch
44 #include <boost/utility.hpp>
45 #include <boost/bind.hpp>
46 #include <boost/signals/trackable.hpp>
48 using lyx::support::LibFileSearch;
58 class SplashScreen : boost::noncopyable, boost::signals::trackable {
60 /// This is a singleton class. Get the instance.
61 static SplashScreen const & get();
63 lyx::graphics::Image const * image() const { return loader_.image(); }
65 string const & text() const { return text_; }
67 LyXFont const & font() const { return font_; }
69 void connect(lyx::graphics::Loader::slot_type const & slot) const {
70 loader_.connect(slot);
73 void startLoading() const {
74 if (loader_.status() == lyx::graphics::WaitingToLoad)
75 loader_.startLoading();
79 /** Make the c-tor private so we can control how many objects
85 lyx::graphics::Loader loader_;
86 /// The text to be written on top of the pixmap
93 SplashScreen const & SplashScreen::get()
95 static SplashScreen singleton;
100 SplashScreen::SplashScreen()
101 : text_(lyx_version ? lyx_version : "unknown")
103 if (!lyxrc.show_banner)
106 string const file = LibFileSearch("images", "banner", "ppm");
110 // The font used to display the version info
111 font_.setFamily(LyXFont::SANS_FAMILY);
112 font_.setSeries(LyXFont::BOLD_SERIES);
113 font_.setSize(LyXFont::SIZE_NORMAL);
114 font_.setColor(LColor::yellow);
116 // Load up the graphics file
123 LyXScreen::LyXScreen()
124 : cursor_visible_(false), greyed_out_(true)
126 // Start loading the pixmap as soon as possible
127 if (lyxrc.show_banner) {
128 SplashScreen const & splash = SplashScreen::get();
129 splash.connect(boost::bind(&LyXScreen::greyOut, this));
130 splash.startLoading();
135 LyXScreen::~LyXScreen()
140 void LyXScreen::showCursor(BufferView & bv)
142 // this is needed to make sure we copy back the right
143 // pixmap on the hide for the Qt frontend
144 lyx_gui::sync_events();
152 Cursor_Shape shape = BAR_SHAPE;
154 LyXText const & text = *bv.getLyXText();
155 LyXFont const & realfont = text.real_current_font;
156 BufferParams const & bp = bv.buffer()->params();
157 bool const samelang = realfont.language() == bp.language;
158 bool const isrtl = realfont.isVisibleRightToLeft();
160 if (!samelang || isrtl != bp.language->RightToLeft()) {
163 shape = REVERSED_L_SHAPE;
166 // The ERT language hack needs fixing up
167 if (realfont.language() == latex_language)
170 int ascent = font_metrics::maxAscent(realfont);
171 int descent = font_metrics::maxDescent(realfont);
172 int h = ascent + descent;
175 bv.cursor().getPos(x, y);
176 y -= ascent + bv.top_y();
177 //lyxerr << "LyXScreen::showCursor x: " << x << " y: " << y << endl;
179 // if it doesn't fit entirely on the screen, don't try to show it
180 if (y < 0 || y + h > workarea().workHeight())
183 cursor_visible_ = true;
184 showCursor(x, y, h, shape);
188 void LyXScreen::hideCursor()
190 if (!cursor_visible_)
193 cursor_visible_ = false;
198 void LyXScreen::toggleCursor(BufferView & bv)
207 bool LyXScreen::fitCursor(BufferView * bv)
209 int const top_y = bv->top_y();
210 int const h = workarea().workHeight();
214 bv->cursor().getPos(x, y);
215 bv->cursor().getDim(asc, desc);
216 lyxerr[Debug::DEBUG] << "LyXScreen::fitCursor: x: " << x
218 << " top_y: " << top_y
221 bool const big_row = h / 4 < asc + desc && asc + desc < h;
223 if (y + desc - top_y >= h) {
225 newtop = y + desc - h;
229 } else if (top_y > max(y - asc, 0)) {
234 newtop = min(newtop, top_y);
238 newtop = max(newtop, 0);
247 void LyXScreen::redraw(BufferView & bv)
249 greyed_out_ = !bv.text();
256 workarea().getPainter().start();
260 int const y = paintText(bv);
262 // maybe we have to clear the screen at the bottom
263 int const y2 = workarea().workHeight();
264 if (y < y2 && bv.text()->isMainText()) {
265 workarea().getPainter().fillRectangle(0, y,
266 workarea().workWidth(), y2 - y,
270 lyxerr[Debug::DEBUG] << "Redraw screen" << endl;
272 expose(0, 0, workarea().workWidth(), workarea().workHeight());
274 workarea().getPainter().end();
280 void LyXScreen::greyOut()
285 workarea().getPainter().start();
287 workarea().getPainter().fillRectangle(0, 0,
288 workarea().workWidth(),
289 workarea().workHeight(),
292 // Add a splash screen to the centre of the work area
293 SplashScreen const & splash = SplashScreen::get();
294 lyx::graphics::Image const * const splash_image = splash.image();
296 int const w = splash_image->getWidth();
297 int const h = splash_image->getHeight();
299 int x = (workarea().workWidth() - w) / 2;
300 int y = (workarea().workHeight() - h) / 2;
302 workarea().getPainter().image(x, y, w, h, *splash_image);
307 workarea().getPainter().text(x, y, splash.text(), splash.font());
309 expose(0, 0, workarea().workWidth(), workarea().workHeight());
310 workarea().getPainter().end();