Add gn plumbing for mdbviz tool

Change-Id: I06e6b63c2742da069f48ff5d7defafc63a485af7
Reviewed-on: https://skia-review.googlesource.com/41842
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

5 files changed, 190 insertions, 0 deletions

diff --git a/tools/mdbviz/images/open.png b/tools/mdbviz/images/open.png
new file mode 100644
index 0000000000..6043f4bdc0
--- /dev/null
+++ b/tools/mdbviz/images/open.png
diff --git a/tools/mdbviz/main.cpp b/tools/mdbviz/main.cpp
new file mode 100644
index 0000000000..42abc2a7d8
--- /dev/null
+++ b/tools/mdbviz/main.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <QtWidgets>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    QCoreApplication::setOrganizationName("Google");
+    QCoreApplication::setApplicationName("MDB Viz");
+    QCoreApplication::setApplicationVersion("0.0");
+
+    QCommandLineParser parser;
+    parser.setApplicationDescription(QCoreApplication::applicationName());
+    parser.addVersionOption();
+    parser.process(app);
+
+    MainWindow mainWin;
+    mainWin.show();
+
+    return app.exec();
+}
+
+
diff --git a/tools/mdbviz/mainwindow.cpp b/tools/mdbviz/mainwindow.cpp
new file mode 100644
index 0000000000..c77bfd613b
--- /dev/null
+++ b/tools/mdbviz/mainwindow.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <QtWidgets>
+
+#include "MainWindow.h"
+
+#include "SkBitmap.h"
+#include "SkCanvas.h"
+#include "SkPicture.h"
+#include "SkStream.h"
+
+MainWindow::MainWindow()
+        : fImageLabel(new QLabel) {
+    this->setCentralWidget(fImageLabel);
+
+    this->createActions();
+    this->createStatusBar();
+    this->readSettings();
+    this->setUnifiedTitleAndToolBarOnMac(true);
+}
+
+void MainWindow::openFile() {
+    QString fileName = QFileDialog::getOpenFileName(this);
+    if (!fileName.isEmpty()) {
+        this->loadFile(fileName);
+    }
+}
+
+void MainWindow::loadFile(const QString &fileName) {
+    QFile file(fileName);
+    if (!file.open(QFile::ReadOnly | QFile::Text)) {
+        QMessageBox::warning(this, tr("MDB Viz"),
+                             tr("Cannot read file %1:\n%2.")
+                             .arg(QDir::toNativeSeparators(fileName), file.errorString()));
+        return;
+    }
+
+    QTextStream in(&file);
+#ifndef QT_NO_CURSOR
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+#endif
+
+    std::string str = file.fileName().toLocal8Bit().constData();
+
+    std::unique_ptr<SkStream> stream = SkStream::MakeFromFile(str.c_str());
+    if (!stream) {
+        this->statusBar()->showMessage(tr("Couldn't read file"));
+        return;
+    }
+    sk_sp<SkPicture> pic(SkPicture::MakeFromStream(stream.get()));
+    if (!pic) {
+        this->statusBar()->showMessage(tr("Couldn't decode picture"));
+        return;
+    }
+
+    SkBitmap bm;
+
+    SkImageInfo ii = SkImageInfo::MakeN32Premul(1024, 1024);
+    bm.allocPixels(ii, 0);
+
+    SkCanvas canvas(bm);
+
+    canvas.drawPicture(pic);
+
+    fImage = QImage((uchar*)bm.getPixels(), bm.width(), bm.height(), QImage::Format_RGBA8888);
+    fImageLabel->setPixmap(QPixmap::fromImage(fImage));
+
+#ifndef QT_NO_CURSOR
+    QApplication::restoreOverrideCursor();
+#endif
+}
+
+void MainWindow::createActions() {
+
+    QMenu *fileMenu = this->menuBar()->addMenu(tr("&File"));
+    QToolBar *fileToolBar = this->addToolBar(tr("File"));
+
+    const QIcon openIcon = QIcon::fromTheme("document-open", QIcon(":/images/open.png"));
+    QAction *openAct = new QAction(openIcon, tr("&Open..."), this);
+    openAct->setShortcuts(QKeySequence::Open);
+    openAct->setStatusTip(tr("Open an existing file"));
+    connect(openAct, &QAction::triggered, this, &MainWindow::openFile);
+    fileMenu->addAction(openAct);
+    fileToolBar->addAction(openAct);
+
+    fileMenu->addSeparator();
+
+    const QIcon exitIcon = QIcon::fromTheme("application-exit");
+    QAction *exitAct = fileMenu->addAction(exitIcon, tr("E&xit"), this, &QWidget::close);
+    exitAct->setShortcuts(QKeySequence::Quit);
+    exitAct->setStatusTip(tr("Exit the application"));
+}
+
+void MainWindow::createStatusBar() {
+    this->statusBar()->showMessage(tr("Ready"));
+}
+
+void MainWindow::readSettings() {
+    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
+    const QByteArray geometry = settings.value("geometry", QByteArray()).toByteArray();
+    if (geometry.isEmpty()) {
+        const QRect availableGeometry = QApplication::desktop()->availableGeometry(this);
+        resize(availableGeometry.width() / 3, availableGeometry.height() / 2);
+        move((availableGeometry.width() - width()) / 2,
+             (availableGeometry.height() - height()) / 2);
+    } else {
+        this->restoreGeometry(geometry);
+    }
+}
+
+void MainWindow::writeSettings() {
+    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
+    settings.setValue("geometry", this->saveGeometry());
+}
diff --git a/tools/mdbviz/mainwindow.h b/tools/mdbviz/mainwindow.h
new file mode 100644
index 0000000000..9aa9fcfda1
--- /dev/null
+++ b/tools/mdbviz/mainwindow.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef MainWindow_DEFINED
+#define MainWindow_DEFINED
+
+#include <QMainWindow>
+
+class QLabel;
+
+class MainWindow : public QMainWindow {
+    Q_OBJECT
+
+public:
+    MainWindow();
+
+private slots:
+    void openFile();
+
+private:
+    void loadFile(const QString &fileName);
+
+    void createActions();
+    void createStatusBar();
+    void readSettings();
+    void writeSettings();
+
+    QImage  fImage;
+    QLabel* fImageLabel;
+};
+
+#endif
diff --git a/tools/mdbviz/resources.qrc b/tools/mdbviz/resources.qrc
new file mode 100644
index 0000000000..0d8713fce2
--- /dev/null
+++ b/tools/mdbviz/resources.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">

+<qresource>

+  <file>images/open.png</file>

+</qresource>

+</RCC>
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