First draft of PictureViewer2

Doesn't do much other than showing a default picture, but it behaves
like a QDialog and positions itself correctly. It's quite a pain in the
ass with a tiling window manager...

1 files changed, 65 insertions, 0 deletions

diff --git a/pictureviewer2.cpp b/pictureviewer2.cpp
new file mode 100644
index 0000000..0c2530e
--- /dev/null
+++ b/pictureviewer2.cpp
@@ -0,0 +1,65 @@
+/*
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version
+  2 of the License, or (at your option) any later version.
+*/
+
+#include <QDesktopWidget>
+#include <QApplication>
+#include <QGraphicsScene>
+#include <QGraphicsPixmapItem>
+#include <QImage>
+
+#include "pictureviewer2.h"
+
+const QString PictureViewer2::mDefaultFile(":/picgone.png");
+
+PictureViewer2::PictureViewer2(QWidget *parent) : QGraphicsView(parent), mCur(0) {
+    //behave like QDialog, but don't be one...
+    setWindowFlags(QFlags<Qt::WindowType>(0x1|0x2|0x1000|0x2000|0x10000|0x8000000));
+
+    //setup gui
+    mScene = new QGraphicsScene(this);
+    setScene(mScene);
+    QDesktopWidget *dw = QApplication::desktop();
+    QSize screenSize = dw->availableGeometry().size();
+    mMinimunSize = QSize(screenSize.width() - 100, screenSize.height() - 100);
+    setMinimumSize(mMinimunSize);
+    move(50, 50);
+    setVisible(false);
+    setFile();
+}
+
+void PictureViewer2::setFile(const QString file){
+    QPixmap pixmap(file);
+    if(pixmap.isNull()){
+        return;
+    }
+    setCurPalette(pixmap);
+    if((pixmap.height() > height()) || (pixmap.width() > width())){
+        pixmap = pixmap.scaled(QSize(width() - 3, height() - 10), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+    }
+    if(mCur){
+        mScene->removeItem(mCur);
+        mCur = 0;
+    }
+    mCur = new QGraphicsPixmapItem(pixmap);
+    mScene->addItem(mCur);
+}
+
+void PictureViewer2::setCurPalette(const QPixmap &pic){
+    QPoint val1 = QPoint(qrand() % pic.width(), qrand() % pic.height());
+    QPoint val2 = QPoint(qrand() % pic.width(), qrand() % pic.height());
+    QImage img = pic.toImage();
+    QColor c1(img.pixel(val1));
+    QColor c2(img.pixel(val2));
+    QLinearGradient g(QPoint(0,0), QPoint(rect().bottomRight()));
+    g.setColorAt(0, c1);
+    g.setColorAt(1, c2);
+    setBackgroundBrush(QBrush(g));
+}
+
+QSize PictureViewer2::sizeHint() const{
+    return mMinimunSize;
+}