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https://github.com/subsurface/subsurface.git
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112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
#include "qmlprofile.h"
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#include "qmlmanager.h"
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#include "profile-widget/profilewidget2.h"
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#include "core/dive.h"
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#include "core/metrics.h"
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#include <QTransform>
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#include <QScreen>
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QMLProfile::QMLProfile(QQuickItem *parent) :
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QQuickPaintedItem(parent),
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m_devicePixelRatio(1.0),
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m_margin(0)
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{
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setAntialiasing(true);
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m_profileWidget = new ProfileWidget2(0);
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m_profileWidget->setProfileState();
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m_profileWidget->setPrintMode(true);
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m_profileWidget->setFontPrintScale(0.8);
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connect(QMLManager::instance(), &QMLManager::sendScreenChanged, this, &QMLProfile::screenChanged);
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setDevicePixelRatio(QMLManager::instance()->lastDevicePixelRatio());
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}
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QMLProfile::~QMLProfile()
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{
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m_profileWidget->deleteLater();
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}
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void QMLProfile::paint(QPainter *painter)
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{
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// let's look at the intended size of the content and scale our scene accordingly
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QRect painterRect = painter->viewport();
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QRect profileRect = m_profileWidget->viewport()->rect();
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// qDebug() << "profile viewport and painter viewport" << profileRect << painterRect;
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qreal sceneSize = 104; // that should give us 2% margin all around (100x100 scene)
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qreal dprComp = devicePixelRatio() * painterRect.width() / profileRect.width();
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qreal sx = painterRect.width() / sceneSize / dprComp;
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qreal sy = painterRect.height() / sceneSize / dprComp;
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// next figure out the weird magic by which we need to shift the painter so the profile is shown
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int dpr = lrint(devicePixelRatio());
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qreal magicShiftFactor = (dpr == 2 ? 0.25 : (dpr == 3 ? 0.33 : 0.0));
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// now set up the transformations scale the profile and
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// shift the painter (taking its existing transformation into account)
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QTransform profileTransform = QTransform();
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profileTransform.scale(sx, sy);
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QTransform painterTransform = painter->transform();
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painterTransform.translate(-painterRect.width() * magicShiftFactor ,-painterRect.height() * magicShiftFactor);
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#if PROFILE_SCALING_DEBUG
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// some debugging messages to help adjust this in case the magic above is insufficient
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QMLManager::instance()->appendTextToLog(QString("dpr %1 profile viewport %2 %3 painter viewport %4 %5").arg(dpr).arg(profileRect.width()).arg(profileRect.height())
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.arg(painterRect.width()).arg(painterRect.height()));
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QMLManager::instance()->appendTextToLog(QString("profile matrix %1 %2 %3 %4 %5 %6 %7 %8 %9").arg(profileTransform.m11()).arg(profileTransform.m12()).arg(profileTransform.m13())
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.arg(profileTransform.m21()).arg(profileTransform.m22()).arg(profileTransform.m23())
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.arg(profileTransform.m31()).arg(profileTransform.m32()).arg(profileTransform.m33()));
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QMLManager::instance()->appendTextToLog(QString("painter matrix %1 %2 %3 %4 %5 %6 %7 %8 %9").arg(painterTransform.m11()).arg(painterTransform.m12()).arg(painterTransform.m13())
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.arg(painterTransform.m21()).arg(painterTransform.m22()).arg(painterTransform.m23())
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.arg(painterTransform.m31()).arg(painterTransform.m32()).arg(painterTransform.m33()));
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qDebug() << "profile scaled by" << profileTransform.m11() << profileTransform.m22() << "and translated by" << profileTransform.m31() << profileTransform.m32();
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qDebug() << "exist profile transform" << m_profileWidget->transform() << "painter transform" << painter->transform();
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#endif
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// apply the transformation
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painter->setTransform(painterTransform);
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m_profileWidget->setTransform(profileTransform);
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// finally, render the profile
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m_profileWidget->render(painter);
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}
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void QMLProfile::setMargin(int margin)
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{
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m_margin = margin;
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}
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QString QMLProfile::diveId() const
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{
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return m_diveId;
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}
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void QMLProfile::setDiveId(const QString &diveId)
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{
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m_diveId = diveId;
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struct dive *d = get_dive_by_uniq_id(m_diveId.toInt());
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if (m_diveId.toInt() < 1)
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return;
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if (!d)
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return;
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if (verbose)
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qDebug() << "setDiveId(" << d->number << ")";
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m_profileWidget->plotDive(d, true);
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}
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qreal QMLProfile::devicePixelRatio() const
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{
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return m_devicePixelRatio;
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}
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void QMLProfile::setDevicePixelRatio(qreal dpr)
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{
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if (dpr != m_devicePixelRatio) {
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m_devicePixelRatio = dpr;
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m_profileWidget->setFontPrintScale(0.8 * dpr);
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updateDevicePixelRatio(dpr);
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emit devicePixelRatioChanged();
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}
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}
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void QMLProfile::screenChanged(QScreen *screen)
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{
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setDevicePixelRatio(screen->devicePixelRatio());
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}
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