From 2f6d52fdea06ff45c9e03768e90eaac658cef487 Mon Sep 17 00:00:00 2001
From: Arno <am@disconnect.de>
Date: Sat, 10 Mar 2012 10:03:18 +0100
Subject: Show filename in PictureViewer

Create a GraphicsItem showing the filename at the top of the view. Also
put the filename in the window title.
---
 pictureviewer2.cpp | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 pictureviewer2.h   | 16 +++++++++++++-
 2 files changed, 74 insertions(+), 5 deletions(-)

diff --git a/pictureviewer2.cpp b/pictureviewer2.cpp
index 1b797d3..1f8f15b 100644
--- a/pictureviewer2.cpp
+++ b/pictureviewer2.cpp
@@ -14,11 +14,13 @@
 #include <QContextMenuEvent>
 #include <QMenu>
 #include <QTimer>
+#include <QPainter>
+#include <QStyleOptionGraphicsItem>
 
 #include "pictureviewer2.h"
 #include "pictureswidget.h"
 
-PictureViewer2::PictureViewer2(QWidget *parent) : QGraphicsView(parent), mCur(0), mCurPos(0), mDefaultFile(":/picgone.png") {
+PictureViewer2::PictureViewer2(QWidget *parent) : QGraphicsView(parent), mCur(0), mCurPos(0), mDefaultFile(":/picgone.png"), mFnItem(0) {
     //behave like QDialog, but don't be one...
     setWindowFlags(QFlags<Qt::WindowType>(0x1|0x2|0x1000|0x2000|0x10000|0x8000000));
 
@@ -43,6 +45,7 @@ PictureViewer2::PictureViewer2(QWidget *parent) : QGraphicsView(parent), mCur(0)
     setMinimumSize(mMinimunSize);
     move(50, 50);
     setVisible(false);
+    mScene->setSceneRect(QRectF(0, 0, width() - 10, height() - 10));
     showFile(mFiles.at(mCurPos));
 }
 
@@ -123,15 +126,30 @@ void PictureViewer2::showFile(const PicData &file){
     }
     if(mCur){
         mScene->removeItem(mCur);
+        delete mCur;
         mCur = 0;
     }
     mCur = new QGraphicsPixmapItem(pixmap);
-    float cX = width() - pixmap.width() / 2;
-    float cY = height() - pixmap.height() / 2;
-    mCur->setPos(QPointF(cX, cY));
+    float cX = (width() / 2) - (pixmap.width() / 2);
+    float cY = height() / 2 - pixmap.height() / 2;
     mScene->addItem(mCur);
+    mCur->setPos(cX, cY);
+    setWindowTitle(constructWindowTitle());
+    constructFilenameItem(mFiles.at(mCurPos).at(PicFilesModel::FileName).toString());
 }
 
+void PictureViewer2::constructFilenameItem(const QString &filename){
+    if(mFnItem){
+        mScene->removeItem(mFnItem);
+        delete mFnItem;
+    }
+    mFnItem = new PictureViewer2FilenameItem(filename);
+    QSizeF itemSize = mFnItem->boundingRect().size();
+    int thisWidth = size().width();
+    int xPos = (thisWidth / 2) - (itemSize.width() / 2);
+    mFnItem->setPos(xPos, 0);
+    mScene->addItem(mFnItem);
+}
 
 void PictureViewer2::setCurPalette(const QPixmap &pic){
     QPoint val1 = QPoint(qrand() % pic.width(), qrand() % pic.height());
@@ -144,3 +162,40 @@ void PictureViewer2::setCurPalette(const QPixmap &pic){
     g.setColorAt(1, c2);
     setBackgroundBrush(QBrush(g));
 }
+
+QString PictureViewer2::constructWindowTitle() const {
+    QString retval = QString(tr("PicViewer 2 - [%1]")).arg(mFiles.at(mCurPos).at(PicFilesModel::FileName).toString());
+    return retval;
+}
+
+PictureViewer2FilenameItem::PictureViewer2FilenameItem(const QString &fileName, QGraphicsItem *parent) : QGraphicsItem(parent), mFilename(fileName) {
+    setZValue(1);
+}
+
+QRectF PictureViewer2FilenameItem::boundingRect() const {
+    QSize size = qApp->fontMetrics().size(Qt::TextSingleLine, mFilename);
+    size += QSize(2, 2);
+    QRectF retval;
+    retval.setWidth(size.width());
+    retval.setHeight(size.height());
+    return retval;
+}
+
+void PictureViewer2FilenameItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget){
+    Q_UNUSED(option);
+    Q_UNUSED(widget);
+    painter->save();
+    painter->setRenderHint(QPainter::Antialiasing, false);
+    painter->setRenderHint(QPainter::TextAntialiasing, true);
+    QColor bgColor = QColor(237, 12, 102);
+    bgColor.setAlpha(70);
+    QColor fgColor = QColor(209, 207, 232);
+    QBrush brush(bgColor);
+    painter->setPen(QColor(Qt::yellow));
+    painter->setBrush(brush);
+    painter->drawRect(boundingRect());
+    painter->setPen(QPen(fgColor));
+    QPoint start(1, qApp->fontMetrics().ascent() + 1);
+    painter->drawText(start, mFilename);
+    painter->restore();
+}
diff --git a/pictureviewer2.h b/pictureviewer2.h
index 9610da1..a45c097 100644
--- a/pictureviewer2.h
+++ b/pictureviewer2.h
@@ -11,12 +11,14 @@
 #include <QGraphicsView>
 #include <QList>
 #include <QVariant>
+#include <QGraphicsItem>
 
 class QGraphicsScene;
 class QGraphicsPixmapItem;
 class QWheelEvent;
 class QContextMenuEvent;
 class QTimer;
+class PictureViewer2FilenameItem;
 
 typedef QList<QVariant> PicData;
 typedef QList<QList<QVariant> > PicDataList;
@@ -40,11 +42,12 @@ class PictureViewer2 : public QGraphicsView {
 
     private slots:
         void showFile(const PicData &file);
+        void constructFilenameItem(const QString &filename);
 
     private:
         void setupDialog();
         void setCurPalette(const QPixmap &pic);
-        void position();
+        QString constructWindowTitle() const;
         PicDataList mFiles;
         QGraphicsScene *mScene;
         QSize mMinimunSize;
@@ -52,6 +55,17 @@ class PictureViewer2 : public QGraphicsView {
         int mCurPos;
         QTimer *mSlideTimer;
         const QString mDefaultFile;
+        PictureViewer2FilenameItem *mFnItem;
+};
+
+class PictureViewer2FilenameItem : public QGraphicsItem {
+    public:
+        explicit PictureViewer2FilenameItem(const QString &fileName, QGraphicsItem *parent = 0);
+        QRectF boundingRect() const;
+        void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    private:
+        QString mFilename;
 };
 
 #endif // PICTUREVIEWER2_H
-- 
cgit v1.2.3-70-g09d2