Initial version of the Star Picker Widget.

A very simple to use widget:
StarWidget *stars = new StarWidget( windowParent);
stars->setMaximumStars(10);
stars->setCurrentStars( rand()%10);
stars->show();
connect(stars, SIGNAL(valueChanged(int)), someObj, SLOT(starsChangedValue(int)));

It currently uses a 'star.svg' file on the same folder as the binary.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

6 files changed, 232 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 7b7ec0476..076b5f123 100644
--- a/Makefile
+++ b/Makefile
@@ -104,10 +104,10 @@ LIBUSB = $(shell $(PKGCONFIG) --libs libusb-1.0 2> /dev/null)
 # Use qmake to find out which Qt version we are building for.
 QT_VERSION_MAJOR = $(shell $(QMAKE) -query QT_VERSION | cut -d. -f1)
 ifeq ($(QT_VERSION_MAJOR), 5)
-	QT_MODULES = Qt5Widgets
+	QT_MODULES = Qt5Widgets Qt5Svg
 	QT_CORE = Qt5Core
 else
-	QT_MODULES = QtGui
+	QT_MODULES = QtGui QtSvg
 	QT_CORE = QtCore
 endif
 
@@ -187,7 +187,7 @@ MSGOBJS=$(addprefix share/locale/,$(MSGLANGS:.po=.UTF-8/LC_MESSAGES/subsurface.m
 
 
 QTOBJS = qt-ui/maintab.o  qt-ui/mainwindow.o  qt-ui/plotareascene.o qt-ui/divelistview.o \
-	 qt-ui/addcylinderdialog.o qt-ui/models.o
+	 qt-ui/addcylinderdialog.o qt-ui/models.o qt-ui/starwidget.o
 
 GTKOBJS = info-gtk.o divelist-gtk.o planner-gtk.o statistics-gtk.o
 
diff --git a/qt-ui/mainwindow.cpp b/qt-ui/mainwindow.cpp
index 46ce076d4..bb4bda1af 100644
--- a/qt-ui/mainwindow.cpp
+++ b/qt-ui/mainwindow.cpp
@@ -13,6 +13,7 @@
 #include <QDateTime>
 
 #include "divelistview.h"
+#include "starwidget.h"
 
 #include "glib.h"
 #include "../dive.h"
@@ -25,6 +26,11 @@ MainWindow::MainWindow() : ui(new Ui::MainWindow()),
 {
 	ui->setupUi(this);
 	ui->ListWidget->setModel(model);
+	// Just to test the star widgets, can be safely removed.
+	StarWidget *star = new StarWidget(0);
+	star->setMaximumStars(10);
+	star->setCurrentStars(3);
+	star->show();
 }
 
 void MainWindow::on_actionNew_triggered()
diff --git a/qt-ui/starwidget.cpp b/qt-ui/starwidget.cpp
new file mode 100644
index 000000000..457946feb
--- /dev/null
+++ b/qt-ui/starwidget.cpp
@@ -0,0 +1,102 @@
+#include "starwidget.h"
+#include <QSvgRenderer>
+#include <QPainter>
+#include <QPaintEvent>
+#include <QDebug>
+#include <QMouseEvent>
+
+int StarWidget::currentStars() const
+{
+	return current;
+}
+
+void StarWidget::enableHalfStars(bool enabled)
+{
+	halfStar = enabled;
+	update();
+}
+
+bool StarWidget::halfStarsEnabled() const
+{
+	return halfStar;
+}
+
+int StarWidget::maxStars() const
+{
+	return stars;
+}
+
+void StarWidget::mouseReleaseEvent(QMouseEvent* event)
+{
+	int starClicked = event->pos().x() / IMG_SIZE + 1;
+	if (starClicked > stars)
+		starClicked = stars;
+
+	if (current == starClicked)
+		current -= 1;
+	else
+		current = starClicked;
+
+	update();
+}
+
+void StarWidget::paintEvent(QPaintEvent* event)
+{
+	QPainter p(this);
+
+	for(int i = 0; i < current; i++)
+		p.drawPixmap(i * IMG_SIZE + SPACING, 0, activeStar);
+
+	for(int i = current; i < stars; i++)
+		p.drawPixmap(i * IMG_SIZE + SPACING, 0, inactiveStar);
+}
+
+void StarWidget::setCurrentStars(int value)
+{
+	current = value;
+	update();
+	Q_EMIT valueChanged(current);
+}
+
+void StarWidget::setMaximumStars(int maximum)
+{
+	stars = maximum;
+	update();
+}
+
+StarWidget::StarWidget(QWidget* parent, Qt::WindowFlags f):
+	QWidget(parent, f),
+	stars(5),
+	current(0),
+	halfStar(false)
+{
+	QSvgRenderer render(QString("star.svg"));
+	QPixmap renderedStar(IMG_SIZE, IMG_SIZE);
+
+	renderedStar.fill(Qt::transparent);
+	QPainter painter(&renderedStar);
+
+	render.render(&painter, QRectF(0, 0, IMG_SIZE, IMG_SIZE));
+	activeStar = renderedStar;
+	inactiveStar = grayImage(&renderedStar);
+}
+
+QPixmap StarWidget::grayImage(QPixmap* coloredImg)
+{
+	QImage img = coloredImg->toImage();
+	for (int i = 0; i < img.width(); ++i) {
+		for (int j = 0; j < img.height(); ++j) {
+			QRgb col = img.pixel(i, j);
+			if (!col)
+				continue;
+			int gray = QColor(Qt::darkGray).rgb();
+			img.setPixel(i, j, qRgb(gray, gray, gray));
+		}
+	}
+	return QPixmap::fromImage(img);
+}
+
+QSize StarWidget::sizeHint() const
+{
+	return QSize(IMG_SIZE * stars + SPACING * (stars-1), IMG_SIZE);
+}
diff --git a/qt-ui/starwidget.h b/qt-ui/starwidget.h
new file mode 100644
index 000000000..cdbb3ab5c
--- /dev/null
+++ b/qt-ui/starwidget.h
@@ -0,0 +1,42 @@
+#ifndef STARWIDGET_H
+#define STARWIDGET_H
+
+#include <QWidget>
+
+
+class StarWidget : public QWidget
+{
+	Q_OBJECT
+public:
+	explicit StarWidget(QWidget* parent = 0, Qt::WindowFlags f = 0);
+
+	int maxStars() const;
+	int currentStars() const;
+	bool halfStarsEnabled() const;
+
+	/*reimp*/ QSize sizeHint() const;
+
+	enum {SPACING = 2, IMG_SIZE = 16};
+
+Q_SIGNALS:
+	void valueChanged(int stars);
+
+public Q_SLOTS:
+	void setCurrentStars(int value);
+	void setMaximumStars(int maximum);
+	void enableHalfStars(bool enabled);
+
+protected:
+	/*reimp*/ void mouseReleaseEvent(QMouseEvent* );
+	/*reimp*/ void paintEvent(QPaintEvent* );
+
+private:
+	int stars;
+	int current;
+	bool halfStar;
+	QPixmap activeStar;
+	QPixmap inactiveStar;
+	QPixmap grayImage(QPixmap *coloredImg);
+};
+
+#endif // STARWIDGET_H
diff --git a/resources.qrc b/resources.qrc
new file mode 100644
index 000000000..e257bf8f5
--- /dev/null
+++ b/resources.qrc
@@ -0,0 +1,5 @@
+ <!DOCTYPE RCC><RCC version="1.0">
+ <qresource>
+    <file alias="star">star.svg</file>
+ </qresource>
+ </RCC>
diff --git a/star.svg b/star.svg
new file mode 100644
index 000000000..e4345eb48
--- /dev/null
+++ b/star.svg
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="32px"
+   height="32px"
+   id="svg15725"
+   version="1.1"
+   inkscape:version="0.48.4 r9939"
+   sodipodi:docname="New document 4">
+  <defs
+     id="defs15727" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="11.197802"
+     inkscape:cx="16"
+     inkscape:cy="16.044652"
+     inkscape:current-layer="layer1"
+     showgrid="true"
+     inkscape:grid-bbox="true"
+     inkscape:document-units="px"
+     inkscape:window-width="1884"
+     inkscape:window-height="1058"
+     inkscape:window-x="-5"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata15730">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1"
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer">
+    <path
+       sodipodi:type="star"
+       style="fill:#ffff00;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       id="path15735"
+       sodipodi:sides="5"
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+       sodipodi:r1="16.150806"
+       sodipodi:r2="7.9237795"
+       sodipodi:arg1="2.5689263"
+       sodipodi:arg2="3.1972448"
+       inkscape:flatsided="false"
+       inkscape:rounded="0"
+       inkscape:randomized="0"
+       d="M 2.0539742,24.498527 7.716555,15.306062 3.110064,5.5415099 13.602452,8.0863163 21.465608,0.68787049 22.28768,11.453112 l 9.466189,5.192062 -9.984319,4.108479 -2.012731,10.607316 -6.99272,-8.226063 z"
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+  </g>
+</svg>