Add SVG icon rendering/cache

6 files changed, 187 insertions, 36 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf6e1aab..fad09575 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,7 +31,6 @@ ENDIF()
 # First, include header overrides
 include_directories(hacks)
 
-
 ######## 3rd Party Libs ########
 
 # Find the required Qt parts
@@ -155,7 +154,7 @@ MESSAGE(STATUS "Job URL: ${MultiMC_JOB_URL}")
 ######## Configure header ########
 configure_file("${PROJECT_SOURCE_DIR}/config.h.in"
 			   "${PROJECT_BINARY_DIR}/include/config.h")
-
+include_directories(${PROJECT_BINARY_DIR}/include)
 
 ################################ FILES ################################
 
@@ -172,6 +171,7 @@ gui/aboutdialog.h
 gui/consolewindow.h
 gui/instancemodel.h
 gui/instancedelegate.h
+gui/iconcache.h
 
 multimc_pragma.h
 
@@ -200,6 +200,7 @@ gui/aboutdialog.cpp
 gui/consolewindow.cpp
 gui/instancemodel.cpp
 gui/instancedelegate.cpp
+gui/iconcache.cpp
 
 java/javautils.cpp
 java/annotations.cpp
diff --git a/gui/iconcache.cpp b/gui/iconcache.cpp
new file mode 100644
index 00000000..520a7839
--- /dev/null
+++ b/gui/iconcache.cpp
@@ -0,0 +1,127 @@
+#include "iconcache.h"
+#include <QMap>
+#include <QWebView>
+#include <QWebFrame>
+#include <QEventLoop>
+#include <QWebElement>
+
+IconCache* IconCache::m_Instance = 0;
+QMutex IconCache::mutex;
+#define MAX_SIZE 1024
+
+class Private : public QWebView
+{
+	Q_OBJECT
+
+public:
+	QString name;
+	QSize size;
+	QMap<QString, QIcon> icons;
+
+public:
+	Private()
+	{
+		connect(this, SIGNAL(loadFinished(bool)), this, SLOT(svgLoaded(bool)));
+		setFixedSize(MAX_SIZE, MAX_SIZE);
+
+		QPalette pal = palette();
+		pal.setColor(QPalette::Base, Qt::transparent);
+		setPalette(pal);
+		setAttribute(Qt::WA_OpaquePaintEvent, false);
+		size = QSize(128,128);
+	}
+	void renderSVGIcon(QString name);
+
+signals:
+	void svgRendered();
+
+private slots:
+	void svgLoaded(bool ok);
+};
+
+void Private::svgLoaded(bool ok)
+{
+	if (!ok)
+	{
+		emit svgRendered();
+		return;
+	}
+	// check for SVG root tag
+	QString root = page()->currentFrame()->documentElement().tagName();
+	if (root.compare("svg", Qt::CaseInsensitive) != 0)
+	{
+		emit svgRendered();
+		return;
+	}
+
+    // get the size of the svg image, check if it's valid
+	auto elem = page()->currentFrame()->documentElement();
+	double width = elem.attribute("width").toDouble();
+	double height = elem.attribute("height").toDouble();
+    if (width == 0.0 || height == 0.0 || width == MAX_SIZE || height == MAX_SIZE)
+	{
+		emit svgRendered();
+		return;
+	}
+
+	// create the target surface
+	QSize t = size.isValid() ? size : QSize(width, height);
+	QImage img(t, QImage::Format_ARGB32_Premultiplied);
+	img.fill(Qt::transparent);
+
+	// prepare the painter, scale to required size
+	QPainter p(&img);
+	if(size.isValid())
+	{
+		p.scale(size.width() / width, size.height() / height);
+	}
+
+	// the best quality
+	p.setRenderHint(QPainter::Antialiasing);
+	p.setRenderHint(QPainter::TextAntialiasing);
+	p.setRenderHint(QPainter::SmoothPixmapTransform);
+
+	page()->mainFrame()->render(&p,QWebFrame::ContentsLayer);
+	p.end();
+
+	icons[name] = QIcon(QPixmap::fromImage(img));
+	emit svgRendered();
+}
+
+void Private::renderSVGIcon ( QString name )
+{
+	// use event loop to wait for signal
+	QEventLoop loop;
+	this->name = name;
+	QString prefix = "qrc:/icons/instances/";
+	QObject::connect(this, SIGNAL(svgRendered()), &loop, SLOT(quit()));
+	load(QUrl(prefix + name));
+	loop.exec();
+}
+
+IconCache::IconCache():d(new Private())
+{
+}
+
+QIcon IconCache::getIcon ( QString name )
+{
+	if(name == "default")
+		name = "infinity";
+	{
+		auto iter = d->icons.find(name);
+		if(iter != d->icons.end())
+			return *iter;
+	}
+	d->renderSVGIcon(name);
+	auto iter = d->icons.find(name);
+	if(iter != d->icons.end())
+		return *iter;
+	
+	// Fallback for icons that don't exist.
+	QString path = ":/icons/instances/infinity";
+	//path += name;
+	d->icons[name] = QIcon(path);
+	return d->icons[name];
+}
+
+#include "iconcache.moc"
\ No newline at end of file
diff --git a/gui/iconcache.h b/gui/iconcache.h
new file mode 100644
index 00000000..5c5e4142
--- /dev/null
+++ b/gui/iconcache.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include <QMutex>
+#include <QtGui/QIcon>
+
+class Private;
+
+class IconCache
+{
+public:
+	static IconCache* instance()
+	{
+		if (!m_Instance)
+		{
+			mutex.lock();
+			if (!m_Instance)
+				m_Instance = new IconCache;
+			mutex.unlock();
+		}
+		return m_Instance;
+	}
+
+	static void drop()
+	{
+		mutex.lock();
+		delete m_Instance;
+		m_Instance = 0;
+		mutex.unlock();
+	}
+
+	QIcon getIcon(QString name);
+	
+private:
+	IconCache();
+	// hide copy constructor
+	IconCache(const IconCache &);
+	// hide assign op
+	IconCache& operator=(const IconCache &); 
+	static IconCache* m_Instance;
+	static QMutex mutex;
+	Private* d;
+};
+	
\ No newline at end of file
diff --git a/gui/instancemodel.cpp b/gui/instancemodel.cpp
index 3c96c8f0..8db985e8 100644
--- a/gui/instancemodel.cpp
+++ b/gui/instancemodel.cpp
@@ -1,6 +1,7 @@
 #include "instancemodel.h"
 #include <instance.h>
 #include <QIcon>
+#include "iconcache.h"
 
 InstanceModel::InstanceModel ( const InstanceList& instances, QObject *parent )
 	: QAbstractListModel ( parent ), m_instances ( &instances )
@@ -70,11 +71,15 @@ QVariant InstanceModel::data ( const QModelIndex& index, int role ) const
 	}
 	case Qt::DecorationRole:
 	{
+		IconCache * ic = IconCache::instance();
 		// FIXME: replace with an icon cache/renderer
+		/*
 		QString path = ":/icons/instances/";
 		path += pdata->iconKey();
 		QIcon icon(path);
-		return icon;
+		*/
+		QString key = pdata->iconKey();
+		return ic->getIcon(key);
 		//else return QIcon(":/icons/multimc/scalable/apps/multimc.svg");
 	}
 	// for now.
diff --git a/gui/mainwindow.cpp b/gui/mainwindow.cpp
index 78f58713..5a915e8c 100644
--- a/gui/mainwindow.cpp
+++ b/gui/mainwindow.cpp
@@ -71,6 +71,7 @@ MainWindow::MainWindow ( QWidget *parent ) :
 	pal.setBrush(QPalette::Base, QBrush(QPixmap(QString::fromUtf8(":/backgrounds/kitteh"))));
 	view->setPalette(pal);
 	*/
+	
 	view->setStyleSheet(
 		"QListView\
 		{\
diff --git a/resources/icons/instances/skeleton.svg b/resources/icons/instances/skeleton.svg
index b2da5a46..5d55f272 100644
--- a/resources/icons/instances/skeleton.svg
+++ b/resources/icons/instances/skeleton.svg
@@ -13,7 +13,7 @@
    height="32"
    id="svg2"
    version="1.1"
-   inkscape:version="0.48.3.1 r9886"
+   inkscape:version="0.48.4 r9939"
    sodipodi:docname="skeleton.svg"
    inkscape:export-filename="/home/peterix/projects/MultiMC4/src/resources/insticons/skeleton128.png"
    inkscape:export-xdpi="360"
@@ -23,19 +23,6 @@
     <filter
        color-interpolation-filters="sRGB"
        inkscape:collect="always"
-       id="filter5719"
-       x="-0.18000001"
-       width="1.36"
-       y="-0.36000001"
-       height="1.72">
-      <feGaussianBlur
-         inkscape:collect="always"
-         stdDeviation="0.15"
-         id="feGaussianBlur5721" />
-    </filter>
-    <filter
-       color-interpolation-filters="sRGB"
-       inkscape:collect="always"
        id="filter5723"
        x="-0.20999999"
        width="1.42"
@@ -49,19 +36,6 @@
     <filter
        color-interpolation-filters="sRGB"
        inkscape:collect="always"
-       id="filter5711"
-       x="-0.1728"
-       width="1.3456"
-       y="-0.34560001"
-       height="1.6912">
-      <feGaussianBlur
-         inkscape:collect="always"
-         stdDeviation="0.144"
-         id="feGaussianBlur5713" />
-    </filter>
-    <filter
-       color-interpolation-filters="sRGB"
-       inkscape:collect="always"
        id="filter5727"
        x="-0.20999999"
        width="1.42"
@@ -103,12 +77,12 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="11.313708"
-     inkscape:cx="17.044214"
-     inkscape:cy="19.500236"
+     inkscape:cx="-18.309169"
+     inkscape:cy="22.958832"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
      showgrid="true"
-     inkscape:window-width="1607"
+     inkscape:window-width="1614"
      inkscape:window-height="1030"
      inkscape:window-x="1676"
      inkscape:window-y="-3"
@@ -129,7 +103,7 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
+        <dc:title />
       </cc:Work>
     </rdf:RDF>
   </metadata>
@@ -612,7 +586,7 @@
        x="7.9999995"
        y="1036.3622" />
     <rect
-       style="fill:#00ffff;fill-opacity:1;stroke:none;filter:url(#filter5711)"
+       style="fill:#00ffff;fill-opacity:1;stroke:none;"
        id="rect4084-3"
        width="2"
        height="1"
@@ -626,7 +600,7 @@
        x="20"
        y="1036.3622" />
     <rect
-       style="fill:#00ffff;fill-opacity:1;stroke:none;filter:url(#filter5719)"
+       style="fill:#00ffff;fill-opacity:1;stroke:none;"
        id="rect4086-7"
        width="2"
        height="1"