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4213d1851a
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@13442 a592a061-630c-0410-9148-cb99ea01b6c8
137 lines
2.6 KiB
C
137 lines
2.6 KiB
C
/**
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* \file qscreen.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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* \author Abdelrazak Younes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "QWorkArea.h"
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#include "qscreen.h"
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#include <QColor>
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#include <QPainter>
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#include <QApplication>
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#include "debug.h"
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#include "lcolorcache.h"
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namespace {
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} // namespace anon
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QScreen::QScreen(QWorkArea & o)
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: LyXScreen(), owner_(o), nocursor_(0,0)
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{
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}
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QScreen::~QScreen()
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{
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}
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WorkArea & QScreen::workarea() const
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{
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return owner_;
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}
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void QScreen::expose(int x, int y, int w, int h)
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{
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lyxerr[Debug::GUI] << "expose " << w << 'x' << h
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<< '+' << x << '+' << y << std::endl;
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owner_.update(x, y, w, h);
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}
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void QScreen::showCursor(int x, int y, int h, Cursor_Shape shape)
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{
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if (!qApp->focusWidget())
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return;
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if (x==cursor_x_ && y==cursor_y_ && h==cursor_h_) {
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// Draw the new (vertical) cursor using the cached store.
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owner_.drawScreen(cursor_x_, cursor_y_, vcursor_);
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return;
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}
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// Cache the dimensions of the cursor.
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cursor_x_ = x;
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cursor_y_ = y;
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cursor_h_ = h;
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switch (shape) {
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case BAR_SHAPE:
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cursor_w_ = 2;
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break;
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case L_SHAPE:
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cursor_w_ = cursor_h_ / 3;
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break;
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case REVERSED_L_SHAPE:
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cursor_w_ = cursor_h_ / 3;
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cursor_x_ = x - cursor_w_ + 1;
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break;
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}
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// We cache three pixmaps:
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// 1 the rectangle of the original screen.
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// 2 the vertical line of the cursor.
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// 3 the horizontal line of the L-shaped cursor (if necessary).
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QColor const & required_color = lcolorcache.get(LColor::cursor);
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bool const cursor_color_changed = required_color != cursor_color_;
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if (cursor_color_changed)
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cursor_color_ = required_color;
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vcursor_ = QPixmap(cursor_w_, cursor_h_);
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vcursor_ .fill(cursor_color_);
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switch (shape) {
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case BAR_SHAPE:
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break;
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case REVERSED_L_SHAPE:
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case L_SHAPE:
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if (cursor_w_ != hcursor_.width() ||
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cursor_color_changed) {
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if (cursor_w_ != hcursor_.width())
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hcursor_ = QPixmap(cursor_w_, 1);
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hcursor_.fill(cursor_color_);
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}
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break;
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}
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// Save the old area (no cursor).
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nocursor_ = owner_.copyScreen(cursor_x_, cursor_y_, cursor_w_, cursor_h_);
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// Draw the new (vertical) cursor using the cached store.
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owner_.drawScreen(cursor_x_, cursor_y_, vcursor_);
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// Draw the new (horizontal) cursor if necessary.
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switch (shape) {
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case BAR_SHAPE:
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break;
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case REVERSED_L_SHAPE:
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case L_SHAPE:
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owner_.drawScreen(cursor_x_, y + h - 1, hcursor_);
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break;
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}
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}
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void QScreen::removeCursor()
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{
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// before first showCursor
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if (nocursor_.isNull())
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return;
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owner_.drawScreen(cursor_x_, cursor_y_, nocursor_);
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}
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