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
14 #pragma implementation
21 #include "QWorkArea.h"
25 #include "BufferView.h"
26 #include "insets/insettext.h"
29 #include <qapplication.h>
37 /// copy some horizontal regions about inside a pixmap
38 void copyInPixmap(QPixmap * p, int dest_y, int src_y, int src_w, int src_h)
40 // bitBlt(dest, dest_x, dest_y, source, src_x, src_y, src_w, src_h)
41 bitBlt(p, 0, dest_y, p, 0, src_y, src_w, src_h);
47 QScreen::QScreen(QWorkArea & o)
48 : LyXScreen(), owner_(o)
58 void QScreen::showManualCursor(LyXText const * text, int x, int y,
59 int asc, int desc, Cursor_Shape shape)
61 if (!qApp->focusWidget())
64 int const y1 = max(y - text->first_y - asc, 0);
65 int const y_tmp = min(y - text->first_y + desc, owner_.height());
67 // secure against very strange situations
68 // which would be when .... ?
69 int const y2 = max(y_tmp, y1);
71 if (y2 > 0 && y1 < owner_.height()) {
72 cursor_h_ = y2 - y1 + 1;
81 cursor_w_ = cursor_h_ / 3;
84 case REVERSED_L_SHAPE:
85 cursor_w_ = cursor_h_ / 3;
86 cursor_x_ = x - cursor_w_ + 1;
90 if (!nocursor_pixmap_.get()
91 || cursor_w_ != nocursor_pixmap_->width()
92 || cursor_h_ != nocursor_pixmap_->height()) {
93 nocursor_pixmap_.reset(new QPixmap(cursor_w_, cursor_h_));
96 owner_.getPainter().start();
99 bitBlt(nocursor_pixmap_.get(), 0, 0, owner_.getPixmap(),
100 cursor_x_, cursor_y_, cursor_w_, cursor_h_);
102 owner_.getPainter().line(x, y1, x, y2, LColor::cursor);
107 case REVERSED_L_SHAPE:
108 int const rectangle_h = (cursor_h_ + 10) / 20;
109 owner_.getPainter().fillRectangle(
110 cursor_x_, y2 - rectangle_h + 1,
111 cursor_w_ - 1, rectangle_h, LColor::cursor);
115 owner_.getPainter().end();
117 owner_.getContent()->repaint(
118 cursor_x_, cursor_y_,
119 cursor_w_, cursor_h_);
122 cursor_visible_ = true;
126 void QScreen::hideCursor()
128 if (!cursor_visible_)
131 bitBlt(owner_.getPixmap(), cursor_x_, cursor_y_,
132 nocursor_pixmap_.get(), 0, 0, cursor_w_, cursor_h_);
134 owner_.getContent()->repaint(
135 cursor_x_, cursor_y_,
136 cursor_w_, cursor_h_);
138 cursor_visible_ = false;
142 void QScreen::repaint()
144 QWidget * content(owner_.getContent());
145 content->repaint(0, 0, content->width(), content->height());
149 void QScreen::expose(int x, int y, int w, int h)
151 lyxerr[Debug::GUI] << "expose " << w << 'x' << h
152 << '+' << x << '+' << y << endl;
154 owner_.getContent()->update(x, y, w, h);
158 void QScreen::draw(LyXText * text, BufferView * bv, unsigned int y)
160 QPixmap * p(owner_.getPixmap());
162 owner_.getPainter().start();
164 if (cursor_visible_) hideCursor();
166 int const old_first = text->first_y;
167 bool const internal = (text == bv->text);
170 // If you want to fix the warning below, fix it so it
171 // actually scrolls properly. Hint: a cast won't do.
173 // is any optimization possible?
174 if (y - old_first < owner_.workHeight()
175 && old_first - y < owner_.workHeight()) {
176 if (text->first_y < old_first) {
177 int const dest_y = old_first - text->first_y;
178 drawFromTo(text, bv, 0, dest_y, 0, 0, internal);
179 copyInPixmap(p, dest_y, 0, owner_.workWidth(), owner_.height() - dest_y);
180 expose(0, 0, owner_.workWidth(), dest_y);
182 int const src_y = text->first_y - old_first;
183 drawFromTo(text, bv, owner_.height() - src_y, owner_.height(), 0, 0, internal);
184 copyInPixmap(p, 0, 0, owner_.workWidth(), owner_.height() - src_y);
185 expose(0, owner_.height() - src_y, owner_.workWidth(), src_y);
188 lyxerr[Debug::GUI] << "dumb full redraw" << endl;
189 drawFromTo(text, bv, 0, owner_.height(), 0, 0, internal);
193 owner_.getPainter().end();