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dd0d88f9d7
This way warning icons and tank change icons and other event markers are no longer ridiculously tiny on retina screens. Oddly this doesn't appear to be needed on Android, only on iOS. Fixes #1033 Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
111 lines
4.2 KiB
C++
111 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 "subsurface-core/dive.h"
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#include "subsurface-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 = rint(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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qDebug() << "setDiveId called with valid dive" << 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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