Now using SVG and yosys-svgviewer per default in show command

Makefile

@@ -51,9 +51,9 @@ yosys-config: yosys-config.in
 	sed 's,@CXX@,$(CXX),; s,@CXXFLAGS@,$(CXXFLAGS),; s,@LDFLAGS@,$(LDFLAGS),; s,@LDLIBS@,$(LDLIBS),;' < yosys-config.in > yosys-config
 	chmod +x yosys-config
 
-yosys-svgviewer: libs/svgviewer/*
-	cd libs/svgviewer && qmake && make
-	cp libs/svgviewer/svgviewer yosys-svgviewer
+yosys-svgviewer: libs/svgviewer/*.h libs/svgviewer/*.cpp
+	-cd libs/svgviewer && qmake-qt4 && make
+	-cp libs/svgviewer/svgviewer yosys-svgviewer
 
 test: yosys
 	cd tests/simple && bash run-test.sh
@@ -63,7 +63,7 @@ test: yosys
 install: yosys
 	install yosys /usr/local/bin/yosys
 	install yosys-config /usr/local/bin/yosys-config
-	install yosys-svgviewer /usr/local/bin/yosys-svgviewer
+	-install yosys-svgviewer /usr/local/bin/yosys-svgviewer
 	install yosys-filterlib /usr/local/bin/yosys-filterlib
 
 clean:

kernel/show.cc

@@ -373,10 +373,14 @@ struct ShowPass : public Pass {
 		log("    show [options] [selection]\n");
 		log("\n");
 		log("Create a graphviz DOT file for the selected part of the design and compile it\n");
-		log("to a postscript file.\n");
+		log("to a graphics file (usually SVG or PostScript).\n");
 		log("\n");
-		log("    -viewer <command>\n");
-		log("        Also run the specified command with the postscript file as parameter.\n");
+		log("    -viewer <viewer>\n");
+		log("        Run the specified command with the graphics file as parameter.\n");
+		log("\n");
+		log("    -format <format>\n");
+		log("        Generate a graphics file in the specified format.\n");
+		log("        Usually <format> is 'svg' or 'ps'.\n");
 		log("\n");
 		log("    -lib <verilog_or_ilang_file>\n");
 		log("        Use the specified library file for determining whether cell ports are\n");
@@ -398,7 +402,11 @@ struct ShowPass : public Pass {
 		log("        stretch the graph so all inputs are on the left side and all outputs\n");
 		log("        (including inout ports) are on the right side.\n");
 		log("\n");
-		log("The generated output files are `yosys-show.dot' and `yosys-show.ps'.\n");
+		log("When no <format> is specified, SVG is used. When no <format> and <viewer> is\n");
+		log("specified, 'yosys-svgviewer' is used to display the schematic.\n");
+		log("\n");
+		log("The generated output files are 'yosys-show.dot' and 'yosys-show.<format>',\n");
+		log("unless another prefix is specified using -prefix <prefix>.\n");
 		log("\n");
 	}
 	virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
@@ -406,6 +414,7 @@ struct ShowPass : public Pass {
 		log_header("Generating Graphviz representation of design.\n");
 		log_push();
 
+		std::string format;
 		std::string viewer_exe;
 		std::string prefix = "yosys-show";
 		std::vector<std::string> libfiles;
@@ -434,6 +443,10 @@ struct ShowPass : public Pass {
 				colorSeed = atoi(args[++argidx].c_str());
 				continue;
 			}
+			if (arg == "-format" && argidx+1 < args.size()) {
+				format = atoi(args[++argidx].c_str());
+				continue;
+			}
 			if (arg == "-width") {
 				flag_width= true;
 				continue;
@@ -460,33 +473,42 @@ struct ShowPass : public Pass {
 			log_header("Continuing show pass.\n");
 
 		std::string dot_file = stringf("%s.dot", prefix.c_str());
-		std::string ps_file = stringf("%s.ps", prefix.c_str());
+		std::string out_file = stringf("%s.%s", prefix.c_str(), format.empty() ? "svg" : format.c_str());
 
 		log("Writing dot description to `%s'.\n", dot_file.c_str());
 		FILE *f = fopen(dot_file.c_str(), "w");
-		if (f == NULL)
+		if (f == NULL) {
+			for (auto lib : libs)
+				delete lib;
 			log_cmd_error("Can't open dot file `%s' for writing.\n", dot_file.c_str());
+		}
 		ShowWorker worker(f, design, libs, colorSeed, flag_width, flag_stretch);
 		fclose(f);
 
+		for (auto lib : libs)
+			delete lib;
+
 		if (worker.page_counter == 0)
 			log_cmd_error("Nothing there to show.\n");
 
-		std::string cmd = stringf("dot -Tps -o '%s' '%s'", ps_file.c_str(), dot_file.c_str());
+		std::string cmd = stringf("dot -T%s -o '%s' '%s'", format.empty() ? "svg" : format.c_str(), out_file.c_str(), dot_file.c_str());
 		log("Exec: %s\n", cmd.c_str());
 		if (system(cmd.c_str()) != 0)
 			log_cmd_error("Shell command failed!\n");
 
 		if (!viewer_exe.empty()) {
-			cmd = stringf("%s '%s' &", viewer_exe.c_str(), ps_file.c_str());
+			cmd = stringf("%s '%s' &", viewer_exe.c_str(), out_file.c_str());
+			log("Exec: %s\n", cmd.c_str());
+			if (system(cmd.c_str()) != 0)
+				log_cmd_error("Shell command failed!\n");
+		} else
+		if (format.empty()) {
+			cmd = stringf("fuser -s '%s' || yosys-svgviewer '%s' &", out_file.c_str(), out_file.c_str());
 			log("Exec: %s\n", cmd.c_str());
 			if (system(cmd.c_str()) != 0)
 				log_cmd_error("Shell command failed!\n");
 		}
 
-		for (auto lib : libs)
-			delete lib;
-
 		log_pop();
 	}
 } ShowPass;

libs/svgviewer/mainwindow.cpp

@@ -41,12 +41,15 @@
 #include "mainwindow.h"
 
 #include <QtGui>
+#include <QFileSystemWatcher>
 
 #include "svgview.h"
 
 MainWindow::MainWindow()
     : QMainWindow()
     , m_view(new SvgView)
+    , m_watcher(NULL)
+    , m_filehandle(NULL)
 {
     QMenu *fileMenu = new QMenu(tr("&File"), this);
     QAction *openAction = fileMenu->addAction(tr("&Open..."));
@@ -118,6 +121,15 @@ void MainWindow::openFile(const QString &path)
     else
         fileName = path;
 
+    if (m_watcher) {
+    	delete m_watcher;
+	m_watcher = NULL;
+    }
+    if (m_filehandle) {
+    	fclose(m_filehandle);
+	m_filehandle = NULL;
+    }
+
     if (!fileName.isEmpty()) {
         QFile file(fileName);
         if (!file.exists()) {
@@ -129,6 +141,13 @@ void MainWindow::openFile(const QString &path)
             return;
         }
 
+	m_watcher = new QFileSystemWatcher(this);
+	m_watcher->addPath(fileName);
+	connect(m_watcher, SIGNAL(fileChanged(const QString&)), this, SLOT(reloadFile()));
+
+	// just keep the file open so this process is found using 'fuser'
+	m_filehandle = fopen(fileName.toAscii(), "r");
+
         m_view->openFile(file);
 
         if (!fileName.startsWith(":/")) {
@@ -139,10 +158,15 @@ void MainWindow::openFile(const QString &path)
         m_outlineAction->setEnabled(true);
         m_backgroundAction->setEnabled(true);
 
-        resize(m_view->sizeHint() + QSize(80, 80 + menuBar()->height()));
+        // resize(m_view->sizeHint() + QSize(80, 80 + menuBar()->height()));
     }
 }
 
+void MainWindow::reloadFile()
+{
+	openFile(m_currentPath);
+}
+
 void MainWindow::setRenderer(QAction *action)
 {
 #ifndef QT_NO_OPENGL

libs/svgviewer/mainwindow.h

@@ -43,6 +43,7 @@
 
 #include <QMainWindow>
 #include <QString>
+#include <stdio.h>
 
 class SvgView;
 
@@ -51,6 +52,7 @@ class QAction;
 class QGraphicsView;
 class QGraphicsScene;
 class QGraphicsRectItem;
+class QFileSystemWatcher;
 QT_END_NAMESPACE
 
 class MainWindow : public QMainWindow
@@ -63,6 +65,7 @@ public:
 public slots:
     void openFile(const QString &path = QString());
     void setRenderer(QAction *action);
+    void reloadFile();
 
 private:
     QAction *m_nativeAction;
@@ -75,6 +78,8 @@ private:
     SvgView *m_view;
 
     QString m_currentPath;
+    QFileSystemWatcher *m_watcher;
+    FILE *m_filehandle;
 };
 
 #endif