Added QGraphicsWebView to yosys-svgviewer

libs/svgviewer/mainwindow.cpp

@@ -41,6 +41,7 @@
 #include "mainwindow.h"
 
 #include <QtGui>
+#include <unistd.h>
 #include <QFileSystemWatcher>
 
 #include "svgview.h"
@@ -60,10 +61,18 @@ MainWindow::MainWindow()
     menuBar()->addMenu(fileMenu);
 
     QMenu *viewMenu = new QMenu(tr("&View"), this);
+
+    m_interactiveAction = viewMenu->addAction(tr("&Interactive"));
+    m_interactiveAction->setEnabled(false);
+    m_interactiveAction->setCheckable(true);
+    m_interactiveAction->setChecked(false);
+    connect(m_interactiveAction, SIGNAL(toggled(bool)), m_view, SLOT(setViewInteractive(bool)));
+
     m_backgroundAction = viewMenu->addAction(tr("&Background"));
     m_backgroundAction->setEnabled(false);
     m_backgroundAction->setCheckable(true);
     m_backgroundAction->setChecked(false);
+    m_backgroundAction->setVisible(false);
     connect(m_backgroundAction, SIGNAL(toggled(bool)), m_view, SLOT(setViewBackground(bool)));
 
     m_outlineAction = viewMenu->addAction(tr("&Outline"));
@@ -136,6 +145,7 @@ void MainWindow::openFile(const QString &path, bool reload)
             QMessageBox::critical(this, tr("Open SVG File"),
                            QString("Could not open file '%1'.").arg(fileName));
 
+            m_interactiveAction->setEnabled(false);
             m_outlineAction->setEnabled(false);
             m_backgroundAction->setEnabled(false);
             return;
@@ -157,6 +167,7 @@ void MainWindow::openFile(const QString &path, bool reload)
 	    connect(m_watcher, SIGNAL(fileChanged(const QString&)), this, SLOT(reloadFile()));
         }
 
+        m_interactiveAction->setEnabled(true);
         m_outlineAction->setEnabled(true);
         m_backgroundAction->setEnabled(true);
 
@@ -169,6 +180,8 @@ void MainWindow::openFile(const QString &path, bool reload)
 
 void MainWindow::reloadFile()
 {
+    // give the writer ~100 ms to finish writing
+    usleep(100000);
 	openFile(m_currentPath, true);
 }
 

libs/svgviewer/mainwindow.h

@@ -72,6 +72,7 @@ private:
     QAction *m_glAction;
     QAction *m_imageAction;
     QAction *m_highQualityAntialiasingAction;
+    QAction *m_interactiveAction;
     QAction *m_backgroundAction;
     QAction *m_outlineAction;
 

libs/svgviewer/svgview.cpp

@@ -56,6 +56,7 @@ SvgView::SvgView(QWidget *parent)
     : QGraphicsView(parent)
     , m_renderer(Native)
     , m_svgItem(0)
+    , m_webview(0)
     , m_backgroundItem(0)
     , m_outlineItem(0)
 {
@@ -91,35 +92,44 @@ void SvgView::openFile(const QFile &file)
 
     QGraphicsScene *s = scene();
 
-    bool drawBackground = (m_backgroundItem ? m_backgroundItem->isVisible() : false);
+    fn = file.fileName();
-    bool drawOutline = (m_outlineItem ? m_outlineItem->isVisible() : true);
-
-    s->clear();
-    resetTransform();
-
-#if 0
-    QGraphicsWebView *webview = new QGraphicsWebView();
-    QString fn = file.fileName();
     if (fn[0] != '/') {
         char cwd_buffer[4096];
         if (getcwd(cwd_buffer, 4096) != NULL)
             fn = cwd_buffer + ("/" + fn);
     }
-    webview->load(QUrl::fromLocalFile(fn));
+
-    webview->setResizesToContents(true);
+    bool drawBackground = (m_backgroundItem ? m_backgroundItem->isVisible() : false);
-    m_svgItem = webview;
+    bool drawOutline = (m_outlineItem ? m_outlineItem->isVisible() : true);
-#else
+    bool useWebview = (m_webview ? m_webview->isVisible() : false);
+
+    s->clear();
+    resetTransform();
+
     m_svgItem = new QGraphicsSvgItem(file.fileName());
-#endif
     m_svgItem->setFlags(QGraphicsItem::ItemClipsToShape);
     m_svgItem->setCacheMode(QGraphicsItem::NoCache);
+    m_svgItem->setVisible(!useWebview);
     m_svgItem->setZValue(1);
+    s->addItem(m_svgItem);
+
+    if (useWebview) {
+        m_webview = new QGraphicsWebView();
+        m_webview->load(QUrl::fromLocalFile(fn));
+        m_webview->setResizesToContents(true);
+        m_webview->setZoomFactor(0.75);
+        m_webview->setVisible(useWebview);
+        m_webview->setZValue(1);
+        s->addItem(m_webview);
+    } else
+        m_webview = NULL;
 
     m_backgroundItem = new QGraphicsRectItem(m_svgItem->boundingRect());
     m_backgroundItem->setBrush(Qt::white);
     m_backgroundItem->setPen(Qt::NoPen);
     m_backgroundItem->setVisible(drawBackground);
     m_backgroundItem->setZValue(0);
+    s->addItem(m_backgroundItem);
 
     m_outlineItem = new QGraphicsRectItem(m_svgItem->boundingRect());
     QPen outline(Qt::black, 2, Qt::DashLine);
@@ -128,9 +138,6 @@ void SvgView::openFile(const QFile &file)
     m_outlineItem->setBrush(Qt::NoBrush);
     m_outlineItem->setVisible(drawOutline);
     m_outlineItem->setZValue(2);
-
-    s->addItem(m_backgroundItem);
-    s->addItem(m_svgItem);
     s->addItem(m_outlineItem);
 
     s->setSceneRect(m_outlineItem->boundingRect().adjusted(-10, -10, 10, 10));
@@ -158,6 +165,23 @@ void SvgView::setHighQualityAntialiasing(bool highQualityAntialiasing)
 #endif
 }
 
+void SvgView::setViewInteractive(bool enable)
+{
+    if (!m_svgItem)
+        return;
+    if (!m_webview) {
+        m_webview = new QGraphicsWebView();
+        m_webview->load(QUrl::fromLocalFile(fn));
+        m_webview->setResizesToContents(true);
+        m_webview->setZoomFactor(0.75);
+        m_webview->setVisible(false);
+        m_webview->setZValue(1);
+        m_svgItem->scene()->addItem(m_webview);
+    }
+    m_svgItem->setVisible(!enable);
+    m_webview->setVisible(enable);
+}
+
 void SvgView::setViewBackground(bool enable)
 {
     if (!m_backgroundItem)

libs/svgviewer/svgview.h

@@ -42,6 +42,7 @@
 #define SVGVIEW_H
 
 #include <QGraphicsView>
+#include <QGraphicsWebView>
 
 QT_BEGIN_NAMESPACE
 class QWheelEvent;
@@ -64,6 +65,7 @@ public:
 
 public slots:
     void setHighQualityAntialiasing(bool highQualityAntialiasing);
+    void setViewInteractive(bool enable);
     void setViewBackground(bool enable);
     void setViewOutline(bool enable);
 
@@ -74,7 +76,9 @@ protected:
 private:
     RendererType m_renderer;
 
+    QString fn;
     QGraphicsItem *m_svgItem;
+    QGraphicsWebView *m_webview;
     QGraphicsRectItem *m_backgroundItem;
     QGraphicsRectItem *m_outlineItem;