Implement Visualize window (prototype)

qt/CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.16)
 project(bibref-qt LANGUAGES CXX C)
 
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets Concurrent)
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets Concurrent SvgWidgets)
 
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(sword REQUIRED sword)
@@ -17,6 +17,8 @@ set(Boost_USE_MULTITHREADED ON)
 set(Boost_USE_STATIC_RUNTIME OFF)
 find_package(Boost CONFIG COMPONENTS system filesystem)
 
+pkg_check_modules(gvc REQUIRED libgvc)
+
 if(MINGW)
     find_package(ICU REQUIRED uc in)
     find_package(LibLZMA REQUIRED)
@@ -26,7 +28,7 @@ endif(MINGW)
 
 pkg_check_modules (readline REQUIRED readline)
 
-include_directories(${sword_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS} ${readline_INCLUDE_DIRS})
+include_directories(${sword_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS} ${readline_INCLUDE_DIRS} ${gvc_INCLUDE_DIRS})
 
 # This works when Qt >= 6.3:
 # qt_standard_project_setup()
@@ -69,6 +71,7 @@ qt_add_executable(bibref-qt
     mainwindow.cpp mainwindow.h
     statementwindow.cpp statementwindow.h
     highlighter.cpp highlighter.h
+    visualizewindow.cpp visualizewindow.h
     book.cpp book.h
     books.cpp books.h
     cli.cpp cli.h
@@ -89,8 +92,10 @@ target_link_libraries(bibref-qt PRIVATE
     Qt6::Gui
     Qt6::Widgets
     Qt6::Concurrent
+    Qt6::SvgWidgets
     ${sword_LIBRARIES} ${Boost_LIBRARIES} ${readline_LIBRARIES}
     ${ICU_LIBRARIES} ${LIBLZMA_LIBRARIES} ${ZLIB_LIBRARIES} ${BZIP2_LIBRARIES}
+    ${gvc_LIBRARIES}
 )
 
 # If not set, XDG_DATA_HOME is set to $HOME:

qt/mainwindow.cpp

@@ -1,4 +1,5 @@
 #include "mainwindow.h"
+#include "statementwindow.h"
 
 #include "books.h"
 #include "cli.h"
@@ -20,8 +21,6 @@
 
 #include <cstdio>
 
-#include "statementwindow.h"
-
 using namespace std;
 
 using namespace sword;

qt/statementwindow.cpp

@@ -1,4 +1,5 @@
 #include "statementwindow.h"
+#include "visualizewindow.h"
 
 #include <QtWidgets>
 #include <iostream>
@@ -99,6 +100,9 @@ void StatementWindow::parse()
 
     int infos = 0, warnings = 0, errors = 0;
     QString details;
+    bool dmode = false;
+    graphviz_input = "";
+    bool diagram_defined = false;
 
     for (auto l: statementAnalysis) {
         if (l.find(": info: ")!=string::npos)
@@ -111,6 +115,16 @@ void StatementWindow::parse()
             details += QString::fromStdString(l);
             details += "\n";
             }
+        if (dmode) {
+            graphviz_input += l + "\n";
+        }
+        if (l.find("diagram: graphviz: start")!=string::npos) {
+            dmode = true;
+            diagram_defined = true;
+        }
+        if (l.find("diagram: graphviz: end")!=string::npos) {
+            dmode = false;
+        }
     }
 
     QMessageBox msgBox;
@@ -137,7 +151,13 @@ void StatementWindow::parse()
 
 void StatementWindow::showSvg()
 {
-
+#ifdef WITH_PBRST
+    auto vwindow = new VisualizeWindow(this, graphviz_input);
+    // vwindow->resize(600, 400);
+    vwindow->show();
+    vwindow->setWindowIcon(QIcon::fromTheme("emblem-photos"));
+    vwindow->setWindowTitle(tr("Visualize"));
+#endif // WITH_PBRST
 }
 
 void StatementWindow::setupProveMenu()
@@ -148,8 +168,9 @@ void StatementWindow::setupProveMenu()
 
     proveMenu->addAction(QIcon::fromTheme("tools-check-spelling"), tr("&Parse"), QKeySequence::Forward,
                         this, &StatementWindow::parse);
-    // proveMenu->addAction(QIcon::fromTheme("emblem-photos"), tr("&Visualize"), QKeySequence::Print,
-    //                     this, &StatementWindow::showSvg);
+    proveMenu->addAction(QIcon::fromTheme("emblem-photos"), tr("&Visualize"), QKeySequence::Print,
+                         this, &StatementWindow::showSvg);
+
 #endif // WITH_PBRST
 }
 

qt/statementwindow.h

@@ -5,6 +5,10 @@
 
 #include <QMainWindow>
 
+#include <string>
+
+using namespace std;
+
 QT_BEGIN_NAMESPACE
 class QTextEdit;
 QT_END_NAMESPACE
@@ -30,7 +34,8 @@ public slots:
 
     QTextEdit *editor;
     Highlighter *highlighter;
-};
 
+    string graphviz_input;
+};
 
 #endif

qt/visualizewindow.cpp

@@ -0,0 +1,35 @@
+#include "visualizewindow.h"
+
+#include <QtSvg>
+#include <QSvgWidget>
+#include <QtWidgets>
+
+#include <cstdio>
+#include <string>
+#include <graphviz/cdt.h>
+#include <graphviz/cgraph.h>
+#include <graphviz/gvc.h>
+#include <graphviz/gvplugin.h>
+
+using namespace std;
+
+VisualizeWindow::VisualizeWindow(QWidget *parent, string input)
+    : QMainWindow(parent)
+{
+    this->setAttribute(::Qt::WA_DeleteOnClose);
+    tile = new QSvgWidget(this);
+    setCentralWidget(tile);
+    GVC_t *gvc= gvContext();
+    Agraph_t *g = agmemread((char*)input.c_str());
+    gvLayout(gvc, g, "dot");
+#define MAX_SVG_LENGTH ((unsigned int) 200000)
+    char *svg = (char*) malloc(MAX_SVG_LENGTH);
+    unsigned int length;
+    gvRenderData(gvc, g, "svg", &svg, &length);
+    gvFreeLayout(gvc, g);
+    agclose(g);
+    (gvFreeContext(gvc));
+    string svg_s = string(svg);
+    tile->load(QByteArray::fromStdString(svg_s));
+}
+

qt/visualizewindow.h

@@ -0,0 +1,21 @@
+#ifndef VISUALIZEWINDOW_H
+#define VISUALIZEWINDOW_H
+
+#include <QMainWindow>
+#include <QSVgWidget>
+#include <string>
+
+using namespace std;
+
+class VisualizeWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    VisualizeWindow(QWidget *parent, string input);
+
+private:
+    QSvgWidget *tile;
+};
+
+#endif