From b39ee0b0a3b8c51da2f2ef709dbb88e20ec93703 Mon Sep 17 00:00:00 2001
From: Christian Klinger
Date: Wed, 27 Apr 2016 15:54:03 +0200
Subject: add aspect ratio preservation.

---
 src/server/mainwindow/mainwindow.cpp | 67 +++++++++++++++++++++++++++++-------
 1 file changed, 54 insertions(+), 13 deletions(-)

(limited to 'src/server/mainwindow/mainwindow.cpp')

diff --git a/src/server/mainwindow/mainwindow.cpp b/src/server/mainwindow/mainwindow.cpp
index d20b525..ff814c0 100644
--- a/src/server/mainwindow/mainwindow.cpp
+++ b/src/server/mainwindow/mainwindow.cpp
@@ -59,9 +59,12 @@ MainWindow::MainWindow(QString ipListUrl, QWidget* parent) :
 	_mode = Mode::Multicast;
 	_streamingSource = 0;
 
-    /* default value, these should be updated on loading a room */
-    _tilesX = 20;
-    _tilesY = 20;
+    /* default value, these will be updated a room is loaded */
+    _tilesX = 10;
+    _tilesY = 10;
+
+    _virtCols = 0;
+    _virtRows = 0;
 
 	_sessionNameWindow = new SessionNameWindow(this);
 	_helpWindow = new HelpWindow(this);
@@ -491,6 +494,26 @@ void MainWindow::changeEvent(QEvent* e)
 	QMainWindow::changeEvent(e);
 }
 
+enum AspectStatus { GRID_OK, GRID_TOO_WIDE, GRID_TOO_TALL };
+
+/**
+ * check the difference in the aspect ratio between the frame size and the grid
+ * size. The parameters in here are hand-adjusted. Feel free to make it more or
+ * less sensitive.
+ * */
+AspectStatus checkAspectRatio(const QSize& frameSize, const QSize& gridSize) {
+        float aspectRoom  = ((float) gridSize.height()) / ((float) gridSize.width());
+        float aspectFrame = ((float) frameSize.height()) / ((float) frameSize.width());
+
+        if (aspectRoom / aspectFrame <  0.8) {
+            return GRID_TOO_WIDE;
+        }
+        if ( aspectFrame / aspectRoom < 0.8) {
+            return GRID_TOO_TALL;
+        }
+        return GRID_OK;
+}
+
 /***************************************************************************//**
  * Resize event.
  * @param e
@@ -498,12 +521,36 @@ void MainWindow::changeEvent(QEvent* e)
 void MainWindow::resizeEvent(QResizeEvent* e)
 {
     Room* room = Global::getRooms()[Global::getCurrentRoom()];
-    QSize& clientSize =  room->clientSize;
-	// Resize all connection windows
-	if (ui->frmRoom->size().width() < 100 || ui->frmRoom->size().height() < 100 || _tilesX <= 0 || _tilesY <= 0)
-		return;
+
+    /* Place the trash-bin */
 	const int nw = ui->frmRoom->size().width() / _tilesX;
 	const int nh = ui->frmRoom->size().height() / _tilesY;
+	const int width = ui->frmRoom->geometry().width() - (nw + 1);
+	const int height = ui->frmRoom->geometry().height() - (nh + 1);
+	ui->trash->move(width, height);
+	ui->trash->resize(getTileWidthPx(), getTileHeightPx());
+
+
+    if (room == NULL) {return; } /* Nothing to do here */ /* TODO: But still place the trashbin */
+    QSize& clientSize =  room->clientSize;
+	if (ui->frmRoom->size().width() < 100 || ui->frmRoom->size().height() < 100 || _tilesX <= 0 || _tilesY <= 0) { return; }
+
+    QSize newGridSize = room->gridSize;
+
+    /* do we have to add virtual columns? */
+    while (checkAspectRatio(ui->frmRoom->size(), newGridSize) == GRID_TOO_WIDE) {
+        /* add row */
+        newGridSize.setHeight(newGridSize.height() + 1);
+    }
+    while (checkAspectRatio(ui->frmRoom->size(), newGridSize) == GRID_TOO_TALL) {
+        /* add column */
+        newGridSize.setWidth(newGridSize.width() + 1);
+    }
+    this->_tilesX = newGridSize.width();
+    this->_tilesY = newGridSize.height();
+
+
+	/* Resize all connection windows */
 	for (QList<ConnectionFrame*>::iterator it = _clientFrames.begin(); it != _clientFrames.end(); ++it)
 	{
         int newPosX = (*it)->getGridPosition().x() * getTileWidthPx();
@@ -513,12 +560,6 @@ void MainWindow::resizeEvent(QResizeEvent* e)
         (*it)->setSize(getTileWidthPx() * clientSize.width(), getTileHeightPx() * clientSize.height());
         (*it)->move(newPos);
 	}
-
-	// Resize trash and set position.
-	const int width = ui->frmRoom->geometry().width() - (nw + 1);
-	const int height = ui->frmRoom->geometry().height() - (nh + 1);
-	ui->trash->move(width, height);
-	ui->trash->resize(nw, nh);
 	// qDebug() << "Trash pos: " << ui->trash->pos();
 
 }
-- 
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