diff --git a/libs/ui/widgets/kis_curve_widget.cpp b/libs/ui/widgets/kis_curve_widget.cpp index 9f18242dbc..2f240e914f 100644 --- a/libs/ui/widgets/kis_curve_widget.cpp +++ b/libs/ui/widgets/kis_curve_widget.cpp @@ -1,517 +1,524 @@ /* * Copyright (c) 2005 C. Boemann * Copyright (c) 2009 Dmitry Kazakov * * 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. */ // C++ includes. #include #include // Qt includes. #include #include #include #include #include #include #include #include #include #include #include #include #include #include // KDE includes. #include #include #include // Local includes. #include "widgets/kis_curve_widget.h" #define bounds(x,a,b) (xb ? b :x)) #define MOUSE_AWAY_THRES 15 #define POINT_AREA 1E-4 #define CURVE_AREA 1E-4 #include "kis_curve_widget_p.h" KisCurveWidget::KisCurveWidget(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f), d(new KisCurveWidget::Private(this)) { setObjectName("KisCurveWidget"); d->m_grab_point_index = -1; d->m_readOnlyMode = false; d->m_guideVisible = false; d->m_pixmapDirty = true; d->m_pixmapCache = 0; d->setState(ST_NORMAL); d->m_intIn = 0; d->m_intOut = 0; setMouseTracking(true); setAutoFillBackground(false); setAttribute(Qt::WA_OpaquePaintEvent); setMinimumSize(150, 50); setMaximumSize(250, 250); d->setCurveModified(); setFocusPolicy(Qt::StrongFocus); } KisCurveWidget::~KisCurveWidget() { delete d->m_pixmapCache; delete d; } void KisCurveWidget::setupInOutControls(QSpinBox *in, QSpinBox *out, int inMin, int inMax, int outMin, int outMax) { d->m_intIn = in; d->m_intOut = out; if (!d->m_intIn || !d->m_intOut) return; d->m_inMin = inMin; d->m_inMax = inMax; d->m_outMin = outMin; d->m_outMax = outMax; d->m_intIn->setRange(d->m_inMin, d->m_inMax); d->m_intOut->setRange(d->m_outMin, d->m_outMax); connect(d->m_intIn, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int)), Qt::UniqueConnection); connect(d->m_intOut, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int)), Qt::UniqueConnection); d->syncIOControls(); } void KisCurveWidget::dropInOutControls() { if (!d->m_intIn || !d->m_intOut) return; disconnect(d->m_intIn, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int))); disconnect(d->m_intOut, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int))); d->m_intIn = d->m_intOut = 0; } void KisCurveWidget::inOutChanged(int) { QPointF pt; Q_ASSERT(d->m_grab_point_index >= 0); pt.setX(d->io2sp(d->m_intIn->value(), d->m_inMin, d->m_inMax)); pt.setY(d->io2sp(d->m_intOut->value(), d->m_outMin, d->m_outMax)); if (d->jumpOverExistingPoints(pt, d->m_grab_point_index)) { d->m_curve.setPoint(d->m_grab_point_index, pt); d->m_grab_point_index = d->m_curve.points().indexOf(pt); emit pointSelectedChanged(); } else pt = d->m_curve.points()[d->m_grab_point_index]; d->m_intIn->blockSignals(true); d->m_intOut->blockSignals(true); d->m_intIn->setValue(d->sp2io(pt.x(), d->m_inMin, d->m_inMax)); d->m_intOut->setValue(d->sp2io(pt.y(), d->m_outMin, d->m_outMax)); d->m_intIn->blockSignals(false); d->m_intOut->blockSignals(false); d->setCurveModified(); } void KisCurveWidget::reset(void) { d->m_grab_point_index = -1; emit pointSelectedChanged(); d->m_guideVisible = false; //remove total - 2 points. while (d->m_curve.points().count() - 2 ) { d->m_curve.removePoint(d->m_curve.points().count() - 2); } d->setCurveModified(); } void KisCurveWidget::setCurveGuide(const QColor & color) { d->m_guideVisible = true; d->m_colorGuide = color; } void KisCurveWidget::setPixmap(const QPixmap & pix) { d->m_pix = pix; d->m_pixmapDirty = true; d->setCurveRepaint(); } QPixmap KisCurveWidget::getPixmap() { return d->m_pix; } void KisCurveWidget::setBasePixmap(const QPixmap &pix) { d->m_pixmapBase = pix; } QPixmap KisCurveWidget::getBasePixmap() { return d->m_pixmapBase; } bool KisCurveWidget::pointSelected() const { return d->m_grab_point_index > 0 && d->m_grab_point_index < d->m_curve.points().count() - 1; } void KisCurveWidget::keyPressEvent(QKeyEvent *e) { if (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace) { if (d->m_grab_point_index > 0 && d->m_grab_point_index < d->m_curve.points().count() - 1) { //x() find closest point to get focus afterwards double grab_point_x = d->m_curve.points()[d->m_grab_point_index].x(); int left_of_grab_point_index = d->m_grab_point_index - 1; int right_of_grab_point_index = d->m_grab_point_index + 1; int new_grab_point_index; if (fabs(d->m_curve.points()[left_of_grab_point_index].x() - grab_point_x) < fabs(d->m_curve.points()[right_of_grab_point_index].x() - grab_point_x)) { new_grab_point_index = left_of_grab_point_index; } else { new_grab_point_index = d->m_grab_point_index; } d->m_curve.removePoint(d->m_grab_point_index); d->m_grab_point_index = new_grab_point_index; emit pointSelectedChanged(); setCursor(Qt::ArrowCursor); d->setState(ST_NORMAL); } e->accept(); d->setCurveModified(); } else if (e->key() == Qt::Key_Escape && d->state() != ST_NORMAL) { d->m_curve.setPoint(d->m_grab_point_index, QPointF(d->m_grabOriginalX, d->m_grabOriginalY) ); setCursor(Qt::ArrowCursor); d->setState(ST_NORMAL); e->accept(); d->setCurveModified(); } else if ((e->key() == Qt::Key_A || e->key() == Qt::Key_Insert) && d->state() == ST_NORMAL) { /* FIXME: Lets user choose the hotkeys */ addPointInTheMiddle(); e->accept(); } else QWidget::keyPressEvent(e); } void KisCurveWidget::addPointInTheMiddle() { QPointF pt(0.5, d->m_curve.value(0.5)); if (!d->jumpOverExistingPoints(pt, -1)) return; d->m_grab_point_index = d->m_curve.addPoint(pt); emit pointSelectedChanged(); if (d->m_intIn) d->m_intIn->setFocus(Qt::TabFocusReason); d->setCurveModified(); } void KisCurveWidget::resizeEvent(QResizeEvent *e) { d->m_pixmapDirty = true; QWidget::resizeEvent(e); } void KisCurveWidget::paintEvent(QPaintEvent *) { int wWidth = width() - 1; int wHeight = height() - 1; QPainter p(this); // Antialiasing is not a good idea here, because // the grid will drift one pixel to any side due to rounding of int // FIXME: let's user tell the last word (in config) //p.setRenderHint(QPainter::Antialiasing); QPalette appPalette = QApplication::palette(); p.fillRect(rect(), appPalette.color(QPalette::Base)); // clear out previous paint call results // make the entire widget grayed out if it is disabled if (!this->isEnabled()) { p.setOpacity(0.2); } // draw background if (!d->m_pix.isNull()) { if (d->m_pixmapDirty || !d->m_pixmapCache) { delete d->m_pixmapCache; d->m_pixmapCache = new QPixmap(width(), height()); QPainter cachePainter(d->m_pixmapCache); cachePainter.scale(1.0*width() / d->m_pix.width(), 1.0*height() / d->m_pix.height()); cachePainter.drawPixmap(0, 0, d->m_pix); d->m_pixmapDirty = false; } p.drawPixmap(0, 0, *d->m_pixmapCache); } d->drawGrid(p, wWidth, wHeight); KisConfig cfg(true); if (cfg.antialiasCurves()) { p.setRenderHint(QPainter::Antialiasing); } // Draw curve. double curY; double normalizedX; int x; QPolygonF poly; p.setPen(QPen(appPalette.color(QPalette::Text), 2, Qt::SolidLine)); for (x = 0 ; x < wWidth ; x++) { normalizedX = double(x) / wWidth; curY = wHeight - d->m_curve.value(normalizedX) * wHeight; /** * Keep in mind that QLineF rounds doubles * to ints mathematically, not just rounds down * like in C */ poly.append(QPointF(x, curY)); } poly.append(QPointF(x, wHeight - d->m_curve.value(1.0) * wHeight)); p.drawPolyline(poly); QPainterPath fillCurvePath; QPolygonF fillPoly = poly; fillPoly.append(QPoint(rect().width(), rect().height())); fillPoly.append(QPointF(0,rect().height())); // add a couple points to the edges so it fills in below always QColor fillColor = appPalette.color(QPalette::Text); fillColor.setAlphaF(0.2); fillCurvePath.addPolygon(fillPoly); p.fillPath(fillCurvePath, fillColor); // Drawing curve handles. double curveX; double curveY; if (!d->m_readOnlyMode) { for (int i = 0; i < d->m_curve.points().count(); ++i) { curveX = d->m_curve.points().at(i).x(); curveY = d->m_curve.points().at(i).y(); + int handleSize = 12; // how big should control points be (diamater size) + if (i == d->m_grab_point_index) { - p.setPen(QPen(appPalette.color(QPalette::Text), 6, Qt::SolidLine)); - p.drawEllipse(QRectF(curveX * wWidth - 2, - wHeight - 2 - curveY * wHeight, 4, 4)); + // active point is slightly more "bold" + p.setPen(QPen(appPalette.color(QPalette::Text), 4, Qt::SolidLine)); + p.drawEllipse(QRectF(curveX * wWidth - (handleSize*0.5), + wHeight - (handleSize*0.5) - curveY * wHeight, + handleSize, + handleSize)); } else { p.setPen(QPen(appPalette.color(QPalette::Text), 2, Qt::SolidLine)); - p.drawEllipse(QRectF(curveX * wWidth - 3, - wHeight - 3 - curveY * wHeight, 6, 6)); + p.drawEllipse(QRectF(curveX * wWidth - (handleSize*0.5), + wHeight - (handleSize*0.5) - curveY * wHeight, + handleSize, + handleSize)); } } } // add border around widget to help contain everything QPainterPath widgetBoundsPath; widgetBoundsPath.addRect(rect()); p.strokePath(widgetBoundsPath, appPalette.color(QPalette::Text)); p.setOpacity(1.0); // reset to 1.0 in case we were drawing a disabled widget before } void KisCurveWidget::mousePressEvent(QMouseEvent * e) { if (d->m_readOnlyMode) return; if (e->button() != Qt::LeftButton) return; double x = e->pos().x() / (double)(width() - 1); double y = 1.0 - e->pos().y() / (double)(height() - 1); int closest_point_index = d->nearestPointInRange(QPointF(x, y), width(), height()); if (closest_point_index < 0) { QPointF newPoint(x, y); if (!d->jumpOverExistingPoints(newPoint, -1)) return; d->m_grab_point_index = d->m_curve.addPoint(newPoint); emit pointSelectedChanged(); } else { d->m_grab_point_index = closest_point_index; emit pointSelectedChanged(); } d->m_grabOriginalX = d->m_curve.points()[d->m_grab_point_index].x(); d->m_grabOriginalY = d->m_curve.points()[d->m_grab_point_index].y(); d->m_grabOffsetX = d->m_curve.points()[d->m_grab_point_index].x() - x; d->m_grabOffsetY = d->m_curve.points()[d->m_grab_point_index].y() - y; d->m_curve.setPoint(d->m_grab_point_index, QPointF(x + d->m_grabOffsetX, y + d->m_grabOffsetY)); d->m_draggedAwayPointIndex = -1; d->setState(ST_DRAG); d->setCurveModified(); } void KisCurveWidget::mouseReleaseEvent(QMouseEvent *e) { if (d->m_readOnlyMode) return; if (e->button() != Qt::LeftButton) return; setCursor(Qt::ArrowCursor); d->setState(ST_NORMAL); d->setCurveModified(); } void KisCurveWidget::mouseMoveEvent(QMouseEvent * e) { if (d->m_readOnlyMode) return; double x = e->pos().x() / (double)(width() - 1); double y = 1.0 - e->pos().y() / (double)(height() - 1); if (d->state() == ST_NORMAL) { // If no point is selected set the cursor shape if on top int nearestPointIndex = d->nearestPointInRange(QPointF(x, y), width(), height()); if (nearestPointIndex < 0) setCursor(Qt::ArrowCursor); else setCursor(Qt::CrossCursor); } else { // Else, drag the selected point bool crossedHoriz = e->pos().x() - width() > MOUSE_AWAY_THRES || e->pos().x() < -MOUSE_AWAY_THRES; bool crossedVert = e->pos().y() - height() > MOUSE_AWAY_THRES || e->pos().y() < -MOUSE_AWAY_THRES; bool removePoint = (crossedHoriz || crossedVert); if (!removePoint && d->m_draggedAwayPointIndex >= 0) { // point is no longer dragged away so reinsert it QPointF newPoint(d->m_draggedAwayPoint); d->m_grab_point_index = d->m_curve.addPoint(newPoint); d->m_draggedAwayPointIndex = -1; } if (removePoint && (d->m_draggedAwayPointIndex >= 0)) return; setCursor(Qt::CrossCursor); x += d->m_grabOffsetX; y += d->m_grabOffsetY; double leftX; double rightX; if (d->m_grab_point_index == 0) { leftX = 0.0; if (d->m_curve.points().count() > 1) rightX = d->m_curve.points()[d->m_grab_point_index + 1].x() - POINT_AREA; else rightX = 1.0; } else if (d->m_grab_point_index == d->m_curve.points().count() - 1) { leftX = d->m_curve.points()[d->m_grab_point_index - 1].x() + POINT_AREA; rightX = 1.0; } else { Q_ASSERT(d->m_grab_point_index > 0 && d->m_grab_point_index < d->m_curve.points().count() - 1); // the 1E-4 addition so we can grab the dot later. leftX = d->m_curve.points()[d->m_grab_point_index - 1].x() + POINT_AREA; rightX = d->m_curve.points()[d->m_grab_point_index + 1].x() - POINT_AREA; } x = bounds(x, leftX, rightX); y = bounds(y, 0., 1.); d->m_curve.setPoint(d->m_grab_point_index, QPointF(x, y)); if (removePoint && d->m_curve.points().count() > 2) { d->m_draggedAwayPoint = d->m_curve.points()[d->m_grab_point_index]; d->m_draggedAwayPointIndex = d->m_grab_point_index; d->m_curve.removePoint(d->m_grab_point_index); d->m_grab_point_index = bounds(d->m_grab_point_index, 0, d->m_curve.points().count() - 1); emit pointSelectedChanged(); } d->setCurveModified(); } } KisCubicCurve KisCurveWidget::curve() { return d->m_curve; } void KisCurveWidget::setCurve(KisCubicCurve inlist) { d->m_curve = inlist; d->m_grab_point_index = qBound(0, d->m_grab_point_index, d->m_curve.points().count() - 1); emit pointSelectedChanged(); d->setCurveModified(); } void KisCurveWidget::leaveEvent(QEvent *) { }