Allow dropping of files onto window

[fstl] / src / window.cpp

diff --git a/src/window.cpp b/src/window.cpp
index 9d0644924c1dcf30e9d6a0c1bc5cc7cd5672afd8..3002ecc83daa6008dd3c42c420b933c24605008e 100644 (file)
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -1,4 +1,5 @@
 #include <QMenuBar>
+#include <QMessageBox>
 #include <QFileDialog>
 
 #include "window.h"
@@ -6,9 +7,18 @@
 #include "loader.h"
 
 Window::Window(QWidget *parent) :
-    QMainWindow(parent)
+    QMainWindow(parent),
+    open_action(new QAction("Open", this)),
+    about_action(new QAction("About", this)),
+    quit_action(new QAction("Quit", this))
+
 {
     setWindowTitle("fstl");
+    setAcceptDrops(true);
+
+    QFile styleFile(":/qt/style.qss");
+    styleFile.open( QFile::ReadOnly );
+    setStyleSheet(styleFile.readAll());
 
     QGLFormat format;
     format.setVersion(2, 1);
@@ -17,20 +27,24 @@ Window::Window(QWidget *parent) :
     canvas = new Canvas(format, this);
     setCentralWidget(canvas);
 
-    QAction* open_action = new QAction("Open", this);
     open_action->setShortcut(QKeySequence::Open);
-    QObject::connect(open_action, SIGNAL(triggered()),
-                     this, SLOT(on_open()));
+    QObject::connect(open_action, &QAction::triggered,
+                     this, &Window::on_open);
 
-    QAction* quit_action = new QAction("Quit", this);
     quit_action->setShortcut(QKeySequence::Quit);
-    QObject::connect(quit_action, SIGNAL(triggered()),
-                     this, SLOT(close()));
+    QObject::connect(quit_action, &QAction::triggered,
+                     this, &Window::close);
+
+    QObject::connect(about_action, &QAction::triggered,
+                     this, &Window::on_about);
 
     auto file_menu = menuBar()->addMenu("File");
     file_menu->addAction(open_action);
     file_menu->addAction(quit_action);
 
+    auto help_menu = menuBar()->addMenu("Help");
+    help_menu->addAction(about_action);
+
     resize(600, 400);
 }
 
@@ -44,12 +58,89 @@ void Window::on_open()
     }
 }
 
-void Window::load_stl(const QString &filename)
+void Window::on_about()
+{
+    QMessageBox::about(this, "",
+        "<p align=\"center\"><b>fstl</b></p>"
+        "<p>A fast viewer for <code>.stl</code> files.<br>"
+        "<a href=\"https://github.com/mkeeter/fstl\""
+        "   style=\"color: #93a1a1;\">https://github.com/mkeeter/fstl</a></p>"
+        "<p>© 2014 Matthew Keeter<br>"
+        "<a href=\"mailto:matt.j.keeter@gmail.com\""
+        "   style=\"color: #93a1a1;\">matt.j.keeter@gmail.com</a></p>");
+}
+
+void Window::on_ascii_stl()
+{
+    QMessageBox::critical(this, "Error",
+                          "<b>Error:</b><br>"
+                          "Cannot open ASCII <code>.stl</code> file<br>"
+                          "Please convert to binary <code>.stl</code> and retry");
+}
+
+void Window::on_bad_stl()
 {
+    QMessageBox::critical(this, "Error",
+                          "<b>Error:</b><br>"
+                          "This <code>.stl</code> file is invalid or corrupted.<br>"
+                          "Please export it from the original source, verify, and retry.");
+}
+
+void Window::enable_open()
+{
+    open_action->setEnabled(true);
+}
+
+void Window::disable_open()
+{
+    open_action->setEnabled(false);
+}
+
+bool Window::load_stl(const QString& filename)
+{
+    if (!open_action->isEnabled())  return false;
+
+    canvas->set_status("Loading " + filename);
+
     Loader* loader = new Loader(this, filename);
-    connect(loader, SIGNAL(got_mesh(Mesh*)),
-            canvas, SLOT(load_mesh(Mesh*)));
-    connect(loader, SIGNAL(finished()),
-            loader, SLOT(deleteLater()));
+    connect(loader, &Loader::started,
+              this, &Window::disable_open);
+
+    connect(loader, &Loader::got_mesh,
+            canvas, &Canvas::load_mesh);
+    connect(loader, &Loader::error_ascii_stl,
+              this, &Window::on_ascii_stl);
+    connect(loader, &Loader::error_bad_stl,
+              this, &Window::on_bad_stl);
+
+    connect(loader, &Loader::finished,
+            loader, &Loader::deleteLater);
+    connect(loader, &Loader::finished,
+              this, &Window::enable_open);
+    connect(loader, &Loader::finished,
+            canvas, &Canvas::clear_status);
+
+    if (filename[0] != ':')
+    {
+        connect(loader, &Loader::loaded_file,
+                  this, &Window::setWindowTitle);
+    }
+
     loader->start();
+    return true;
+}
+
+void Window::dragEnterEvent(QDragEnterEvent *event)
+{
+    if (event->mimeData()->hasUrls())
+    {
+        auto urls = event->mimeData()->urls();
+        if (urls.size() == 1 && urls.front().path().endsWith(".stl"))
+            event->acceptProposedAction();
+    }
+}
+
+void Window::dropEvent(QDropEvent *event)
+{
+    load_stl(event->mimeData()->urls().front().toLocalFile());
 }