profile: make profile self contained

move qmlprofile.* to profile dir, to keep all parts of the
widget in one place.

Signed-off-by: Jan Iversen <jani@apache.org>

profile-widget/qmlprofile.cpp

@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "qmlprofile.h"
+#include "mobile-widgets/qmlmanager.h"
+#include "core/subsurface-string.h"
+#include "core/metrics.h"
+#include <QTransform>
+#include <QScreen>
+
+QMLProfile::QMLProfile(QQuickItem *parent) :
+	QQuickPaintedItem(parent),
+	m_devicePixelRatio(1.0),
+	m_margin(0),
+	m_profileWidget(new ProfileWidget2)
+{
+	setAntialiasing(true);
+	m_profileWidget->setProfileState();
+	m_profileWidget->setPrintMode(true);
+	m_profileWidget->setFontPrintScale(0.8);
+	connect(QMLManager::instance(), &QMLManager::sendScreenChanged, this, &QMLProfile::screenChanged);
+	setDevicePixelRatio(QMLManager::instance()->lastDevicePixelRatio());
+}
+
+void QMLProfile::paint(QPainter *painter)
+{
+	// let's look at the intended size of the content and scale our scene accordingly
+	QRect painterRect = painter->viewport();
+	QRect profileRect = m_profileWidget->viewport()->rect();
+	// qDebug() << "profile viewport and painter viewport" << profileRect << painterRect;
+	qreal sceneSize = 104; // that should give us 2% margin all around (100x100 scene)
+	qreal dprComp =  devicePixelRatio() * painterRect.width() / profileRect.width();
+	qreal sx = painterRect.width() / sceneSize / dprComp;
+	qreal sy = painterRect.height() / sceneSize / dprComp;
+
+	// next figure out the weird magic by which we need to shift the painter so the profile is shown
+	double dpr = devicePixelRatio();
+	double magicValues[] = { 0.0, 0.1, 0.25, 0.33, 0.375, 0.40, 0.42};
+	qreal magicShiftFactor = 0.0;
+	if (dpr < 1.3) {
+		magicShiftFactor = magicValues[0];
+	} else if (dpr > 6.0) {
+		magicShiftFactor = magicValues[6];
+	} else if (IS_FP_SAME(dpr, rint(dpr))) {
+		magicShiftFactor = magicValues[lrint(dpr)];
+	} else {
+		int lower = (int)dpr;
+		magicShiftFactor = (magicValues[lower] * (lower + 1 - dpr) + magicValues[lower + 1] * (dpr - lower));
+		if (dpr < 1.45)
+			magicShiftFactor -= 0.03;
+	}
+	// now set up the transformations scale the profile and
+	// shift the painter (taking its existing transformation into account)
+	QTransform profileTransform = QTransform();
+	profileTransform.scale(sx, sy);
+	QTransform painterTransform = painter->transform();
+	painterTransform.translate(-painterRect.width() * magicShiftFactor ,-painterRect.height() * magicShiftFactor);
+
+#if defined(PROFILE_SCALING_DEBUG)
+	// some debugging messages to help adjust this in case the magic above is insufficient
+	qDebug() << QString("dpr %1 profile viewport %2 %3 painter viewport %4 %5").arg(dpr).arg(profileRect.width()).arg(profileRect.height())
+		    .arg(painterRect.width()).arg(painterRect.height());
+	qDebug() << QString("profile matrix %1 %2 %3 %4 %5 %6 %7 %8 %9").arg(profileTransform.m11()).arg(profileTransform.m12()).arg(profileTransform.m13())
+		    .arg(profileTransform.m21()).arg(profileTransform.m22()).arg(profileTransform.m23())
+		    .arg(profileTransform.m31()).arg(profileTransform.m32()).arg(profileTransform.m33()));
+	qDebug() << QString("painter matrix %1 %2 %3 %4 %5 %6 %7 %8 %9").arg(painterTransform.m11()).arg(painterTransform.m12()).arg(painterTransform.m13())
+		    .arg(painterTransform.m21()).arg(painterTransform.m22()).arg(painterTransform.m23())
+		    .arg(painterTransform.m31()).arg(painterTransform.m32()).arg(painterTransform.m33()));
+	qDebug() << "exist profile transform" << m_profileWidget->transform() << "painter transform" << painter->transform();
+#endif
+	// apply the transformation
+	painter->setTransform(painterTransform);
+	m_profileWidget->setTransform(profileTransform);
+
+	// finally, render the profile
+	m_profileWidget->render(painter);
+}
+
+void QMLProfile::setMargin(int margin)
+{
+	m_margin = margin;
+}
+
+QString QMLProfile::diveId() const
+{
+	return m_diveId;
+}
+
+void QMLProfile::setDiveId(const QString &diveId)
+{
+	m_diveId = diveId;
+	struct dive *d = get_dive_by_uniq_id(m_diveId.toInt());
+	if (m_diveId.toInt() < 1)
+		return;
+	if (!d)
+		return;
+	if (verbose)
+		qDebug() << "setDiveId(" << d->number << ")";
+	m_profileWidget->plotDive(d, true);
+}
+
+qreal QMLProfile::devicePixelRatio() const
+{
+	return m_devicePixelRatio;
+}
+
+void QMLProfile::setDevicePixelRatio(qreal dpr)
+{
+	if (dpr != m_devicePixelRatio) {
+		m_devicePixelRatio = dpr;
+		m_profileWidget->setFontPrintScale(0.8 * dpr);
+		updateDevicePixelRatio(dpr);
+		emit devicePixelRatioChanged();
+	}
+}
+
+void QMLProfile::screenChanged(QScreen *screen)
+{
+	setDevicePixelRatio(screen->devicePixelRatio());
+}

profile-widget/qmlprofile.h

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef QMLPROFILE_H
+#define QMLPROFILE_H
+
+#include "profilewidget2.h"
+#include <QQuickPaintedItem>
+
+class QMLProfile : public QQuickPaintedItem
+{
+	Q_OBJECT
+	Q_PROPERTY(QString diveId MEMBER m_diveId WRITE setDiveId)
+	Q_PROPERTY(qreal devicePixelRatio READ devicePixelRatio WRITE setDevicePixelRatio NOTIFY devicePixelRatioChanged)
+
+public:
+	explicit QMLProfile(QQuickItem *parent = 0);
+
+	void paint(QPainter *painter);
+
+	QString diveId() const;
+	void setDiveId(const QString &diveId);
+	qreal devicePixelRatio() const;
+	void setDevicePixelRatio(qreal dpr);
+
+public slots:
+	void setMargin(int margin);
+	void screenChanged(QScreen *screen);
+private:
+	QString m_diveId;
+	qreal m_devicePixelRatio;
+	int m_margin;
+	QScopedPointer<ProfileWidget2> m_profileWidget;
+
+signals:
+	void rightAlignedChanged();
+	void devicePixelRatioChanged();
+};
+
+#endif // QMLPROFILE_H