+++ /dev/null
-/*
- * Copyright (c) 2005 Casper Boemann <cbr@boemann.dk>
- * Copyright (c) 2009 Dmitry Kazakov <dimula73@gmail.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.
- */
-
-
-// C++ includes.
-
-#include <cmath>
-#include <cstdlib>
-
-// Qt includes.
-
-#include <QPixmap>
-#include <QPainter>
-#include <QPoint>
-#include <QPen>
-#include <QEvent>
-#include <QRect>
-#include <QFont>
-#include <QFontMetrics>
-#include <QMouseEvent>
-#include <QKeyEvent>
-#include <QPaintEvent>
-#include <QList>
-
-#include <QSpinBox>
-
-// KDE includes.
-
-#include <kcursor.h>
-#include <klocale.h>
-
-// Local includes.
-
-#include "kis_curve_widget.h"
-
-
-#define bounds(x,a,b) (x<a ? a : (x>b ? b :x))
-#define MOUSE_AWAY_THRES 15
-#define POINT_AREA 1E-4
-#define CURVE_AREA 1E-4
-
-#include "kis_curve_widget_p.h"
-
-
-//static bool pointLessThan(const QPointF &a, const QPointF &b);
-
-
-KisCurveWidget::KisCurveWidget(QWidget *parent, Qt::WFlags 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 = NULL;
- d->setState(ST_NORMAL);
-
- d->m_intIn = NULL;
- d->m_intOut = NULL;
-
- d->m_maxPoints = -1;
-
- setMouseTracking(true);
- setAutoFillBackground(false);
- setAttribute(Qt::WA_OpaquePaintEvent);
- setMinimumSize(150, 150);
- setMaximumSize(1000, 1000);
- setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
-
- d->setCurveModified();
-
- setFocusPolicy(Qt::StrongFocus);
-}
-
-KisCurveWidget::~KisCurveWidget()
-{
- if (d->m_pixmapCache)
- delete d->m_pixmapCache;
- delete d;
-}
-
-QSize KisCurveWidget::sizeHint() const
-{
- return QSize(500, 500);
-}
-
-void KisCurveWidget::setupInOutControls(QSpinBox *in, QSpinBox *out, int min, int max)
-{
- d->m_intIn = in;
- d->m_intOut = out;
-
- if (!d->m_intIn || !d->m_intOut)
- return;
-
- d->m_inOutMin = min;
- d->m_inOutMax = max;
-
- d->m_intIn->setRange(d->m_inOutMin, d->m_inOutMax);
- d->m_intOut->setRange(d->m_inOutMin, d->m_inOutMax);
-
-
- connect(d->m_intIn, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int)));
- connect(d->m_intOut, SIGNAL(valueChanged(int)), this, SLOT(inOutChanged(int)));
- 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 = NULL;
-
-}
-
-void KisCurveWidget::inOutChanged(int)
-{
- QPointF pt;
-
- Q_ASSERT(d->m_grab_point_index >= 0);
-
- pt.setX(d->io2sp(d->m_intIn->value()));
- pt.setY(d->io2sp(d->m_intOut->value()));
-
- 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);
- } 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_intOut->setValue(d->sp2io(pt.y()));
-
- d->m_intIn->blockSignals(false);
- d->m_intOut->blockSignals(false);
-
- d->setCurveModified();
-}
-
-
-void KisCurveWidget::reset(void)
-{
- d->m_grab_point_index = -1;
- d->m_guideVisible = false;
-
- 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();
-}
-
-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;
- setCursor(Qt::ArrowCursor);
- d->setState(ST_NORMAL);
- }
- 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);
-
- 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();
- } 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);
-
- 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);
-
-
- // draw background
- if (!d->m_pix.isNull()) {
- if (d->m_pixmapDirty || !d->m_pixmapCache) {
- if (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);
- } else
- p.fillRect(rect(), palette().background());
-
-
- d->drawGrid(p, wWidth, wHeight);
-
- /*KisConfig cfg;
- if (cfg.antialiasCurves())
- p.setRenderHint(QPainter::Antialiasing);*/
- p.setRenderHint(QPainter::Antialiasing);
-
- // Draw default line
- p.setPen(QPen(Qt::gray, 1, Qt::SolidLine));
- p.drawLine(QLineF(0, wHeight, wWidth, 0));
-
- // Draw curve.
- double prevY = wHeight - d->m_curve.value(0.) * wHeight;
- double prevX = 0.;
- double curY;
- double normalizedX;
- int x;
-
- p.setPen(QPen(Qt::black, 1, 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
- */
- p.drawLine(QLineF(prevX, prevY,
- x, curY));
- prevX = x;
- prevY = curY;
- }
- p.drawLine(QLineF(prevX, prevY ,
- x, wHeight - d->m_curve.value(1.0) * wHeight));
-
- // 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();
-
- if (i == d->m_grab_point_index) {
- p.setPen(QPen(Qt::red, 3, Qt::SolidLine));
- p.drawEllipse(QRectF(curveX * wWidth - 2,
- wHeight - 2 - curveY * wHeight, 4, 4));
- } else {
- p.setPen(QPen(Qt::red, 1, Qt::SolidLine));
- p.drawEllipse(QRectF(curveX * wWidth - 3,
- wHeight - 3 - curveY * wHeight, 6, 6));
- }
- }
- }
-}
-
-void KisCurveWidget::mousePressEvent(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);
-
-
-
- int closest_point_index = d->nearestPointInRange(QPointF(x, y), width(), height());
-
- if (e->button() == Qt::RightButton && closest_point_index > 0 && closest_point_index < d->m_curve.points().count() - 1) {
- d->m_curve.removePoint(closest_point_index);
- setCursor(Qt::ArrowCursor);
- d->setState(ST_NORMAL);
- if (closest_point_index < d->m_grab_point_index)
- --d->m_grab_point_index;
- d->setCurveModified();
- return;
- } else if (e->button() != Qt::LeftButton) return;
-
- if (closest_point_index < 0) {
- if (d->m_maxPoints > 0 && d->m_curve.points().count() >= d->m_maxPoints)
- return;
- QPointF newPoint(x, y);
- if (!d->jumpOverExistingPoints(newPoint, -1))
- return;
- d->m_grab_point_index = d->m_curve.addPoint(newPoint);
- } else {
- d->m_grab_point_index = closest_point_index;
- }
-
- 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 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;
- rightX = 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);
- }
-
- 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);
- d->setCurveModified();
-}
-
-void KisCurveWidget::leaveEvent(QEvent *)
-{
-}
-
-void KisCurveWidget::setMaxPoints(int max)
-{
- d->m_maxPoints = max;
-}
-
-#include "kis_curve_widget.moc"
projects / kdenlive / blobdiff