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/*
SuperCollider Qt IDE
Copyright (c) 2012 Jakob Leben & Tim Blechmann
http://www.audiosynth.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "overlay.hpp"
#include "editor.hpp"
#include "sc_editor.hpp"
#include "../../core/main.hpp"
#include "../../core/settings/theme.hpp"
#include <QTextDocument>
#include <QTextLayout>
#include <QTextBlock>
#include <QPainter>
#include <QPropertyAnimation>
#include <QtCore/qmath.h>
#include <QDebug>
namespace ScIDE {
OverlayAnimator::OverlayAnimator(GenericCodeEditor* editor, QObject* parent):
QObject(parent),
mEditor(editor),
mBackgroundAnimation(this, "backgroundColor") {}
QColor OverlayAnimator::backgroundColor() const { return mEditor->mOverlay->backgroundBrush().color(); }
void OverlayAnimator::setBackgroundColor(const QColor& color) { mEditor->mOverlay->setBackgroundBrush(color); }
void OverlayAnimator::setActiveAppearance(bool active) {
QColor color = mEditor->palette().color(QPalette::Base);
if (color.lightness() >= 128)
color = color.darker(60);
else
color = color.lighter(50);
if (active)
color.setAlpha(0);
else
color.setAlpha(mEditor->inactiveFadeAlpha());
mBackgroundAnimation.stop();
if (mEditor->isVisible()) {
mBackgroundAnimation.setDuration(500);
mBackgroundAnimation.setEasingCurve(QEasingCurve::OutCubic);
mBackgroundAnimation.setStartValue(backgroundColor());
mBackgroundAnimation.setEndValue(color);
mBackgroundAnimation.start();
} else {
setBackgroundColor(color);
}
}
void ScCodeEditor::blinkCode(const QTextCursor& c) {
if (!c.document() || !c.hasSelection())
return;
Settings::Manager* settings = Main::settings();
QTextCharFormat evalCodeTextFormat = settings->getThemeVal("evaluatedCode");
QTextDocument* doc = c.document();
int startPos = c.selectionStart();
int endPos = c.selectionEnd();
QTextBlock startBlock = doc->findBlock(startPos);
QTextBlock endBlock = doc->findBlock(endPos);
startPos -= startBlock.position();
endPos -= endBlock.position();
// Get the bounds of visible blocks within the cursor's selection:
QTextBlock block = firstVisibleBlock();
int idx = block.blockNumber();
int sidx = startBlock.blockNumber();
QTextBlock firstBlock, lastBlock;
firstBlock = lastBlock = block;
QRectF geom = blockBoundingGeometry(block).translated(contentOffset());
qreal top = geom.top();
qreal bottom = top;
qreal width = 0;
while (block.isValid() && bottom < viewport()->rect().height()) {
if (block.isVisible()) {
QTextLayout* l = block.layout();
QRectF r = l->boundingRect();
bottom += r.height();
if (idx < sidx) {
// Block not within the selection. Will skip it.
top = bottom;
} else {
// Block within the selection.
width = qMax(width, l->maximumWidth() + r.left());
}
}
if (block == endBlock)
break;
block = block.next();
++idx;
if (top == bottom)
firstBlock = block;
}
lastBlock = block;
if (bottom == top) {
// qDebug("no visible block.");
return;
}
// Construct a pixmap to render the code on:
QPixmap pix(QSize(qCeil(width), qCeil(bottom - top)));
pix.fill(QColor(0, 0, 0, 0));
// Render the visible blocks:
QPainter painter(&pix);
QVector<QTextLayout::FormatRange> selections;
block = firstBlock;
int y = 0;
while (block.isValid()) {
if (block.isVisible()) {
QRectF blockRect = block.layout()->boundingRect();
// Use extra char formatting to hide code outside of selection
// and modify the appearance of selected code:
QTextLayout::FormatRange range;
selections.clear();
int start = 0;
if (block == startBlock) {
range.start = 0;
range.length = startPos;
range.format.setForeground(QColor(0, 0, 0, 0));
range.format.setBackground(Qt::NoBrush);
selections.append(range);
start = startPos;
}
range.start = start;
range.length = (block == endBlock ? endPos : block.length() - 1) - range.start;
range.format = evalCodeTextFormat;
selections.append(range);
if (block == endBlock) {
range.start = range.start + range.length;
range.length = block.length() - 1 - range.start;
range.format.setForeground(QColor(0, 0, 0, 0));
range.format.setBackground(Qt::NoBrush);
selections.append(range);
}
block.layout()->draw(&painter, QPointF(0, y), selections);
y += blockRect.height();
}
if (block == lastBlock)
break;
block = block.next();
}
// Create an overlay item to display the pixmap, and animate it:
CodeFragmentOverlay* item = new CodeFragmentOverlay();
item->setPixmap(pix);
item->setPos(geom.left(), top);
mOverlay->addItem(item);
QPropertyAnimation* anim = new QPropertyAnimation(item, "opacity", item);
anim->setDuration(mBlinkDuration);
anim->setStartValue(1.0);
anim->setEndValue(0.0);
anim->setEasingCurve(QEasingCurve::InCubic);
anim->start();
connect(anim, SIGNAL(finished()), item, SLOT(deleteLater()));
}
} // namespace ScIDE
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