Print: provide means for profile layouting

printlayout.cpp(h):

This patch cleans some test code and adds the function
printProfileDives() that accepts a number of dives
per rows and columns. It can technically fit any number
of dives on a page given the page size allows it. Both
landscape and portrait layouts are supported.

It now replaces the old methods:
printTwoDives()
printSixDives()

Space is reserved for data tables that will be placed
bellow profiles on a later stage.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

2 files changed, 46 insertions, 33 deletions

diff --git a/qt-ui/printlayout.cpp b/qt-ui/printlayout.cpp
index 7a4944ede..3d0937636 100644
--- a/qt-ui/printlayout.cpp
+++ b/qt-ui/printlayout.cpp
@@ -26,6 +26,7 @@ PrintLayout::PrintLayout(PrintDialog *dialogPtr, QPrinter *printerPtr, struct op
 {
 	dialog = dialogPtr;
 	printer = printerPtr;
+	painter = NULL;
 	printOptions = optionsPtr;
 
 	// table print settings
@@ -52,10 +53,10 @@ void PrintLayout::print()
 	setup();
 	switch (printOptions->type) {
 	case options::PRETTY:
-		printSixDives();
+		printProfileDives(3, 2);
 		break;
 	case options::TWOPERPAGE:
-		printTwoDives();
+		printProfileDives(2, 1);
 		break;
 	case options::TABLE:
 		printTable();
@@ -80,52 +81,65 @@ void PrintLayout::setup()
 	scaledPageH = pageRect.height() / scaleY;
 }
 
-// experimental
-void PrintLayout::printSixDives() const
+void PrintLayout::printProfileDives(int divesPerRow, int divesPerColumn)
 {
+	// setup a painter
+	painter = new QPainter();
+	painter->begin(printer);
+	painter->setRenderHint(QPainter::Antialiasing);
+	painter->setRenderHint(QPainter::SmoothPixmapTransform);
+	painter->scale(scaleX, scaleY);
+
+	// setup the profile widget
 	ProfileGraphicsView *profile = mainWindow()->graphics();
-	QPainter painter;
-	painter.begin(printer);
-	painter.setRenderHint(QPainter::Antialiasing);
-	// painter.setRenderHint(QPainter::HighQualityAntialiasing);
-	painter.setRenderHint(QPainter::SmoothPixmapTransform);
-	painter.scale(scaleX, scaleY);
-
 	profile->clear();
 	profile->setPrintMode(true, !printOptions->color_selected);
 	QSize originalSize = profile->size();
-	profile->resize(scaledPageW, scaledPageH);
-
-	int i;
+	// swap rows/col for landscape
+	if (printer->orientation() == QPrinter::Landscape) {
+		int swap = divesPerColumn;
+		divesPerColumn = divesPerRow;
+		divesPerRow = swap;
+	}
+	// estimate profile and table height and resize the widget
+	const int scaledW = scaledPageW / divesPerColumn;
+	const int scaledH = scaledPageH / divesPerRow;
+	/* make the table 1/3 of the reserved height. potentially this could depend
+	 * on orientation and other parameters as well. */
+	const int tableHeight = scaledH / 3;
+	profile->resize(scaledW, scaledH - tableHeight);
+
+	// plot the dives at specific rows and columns
+	int i, row = 0, col = 0;
 	struct dive *dive;
-	bool firstPage = true;
 	for_each_dive(i, dive) {
 		if (!dive->selected && printOptions->print_selected)
 			continue;
-		// don't create a new page if still on first page
-		if (!firstPage)
-			printer->newPage();
-		else
-			firstPage = false;
+		if (col == divesPerColumn) {
+			col = 0;
+			row++;
+			if (row == divesPerRow) {
+				row = 0;
+				printer->newPage();
+			}
+		}
 		profile->plot(dive, true);
 		QPixmap pm = QPixmap::grabWidget(profile);
-		QTransform transform;
-		transform.rotate(270);
-		pm = QPixmap(pm.transformed(transform));
-		painter.drawPixmap(0, 0, pm);
+		painter->drawPixmap(scaledW * col, scaledH * row, pm);
+		/* TODO: table should be drawn here, preferably by another function */
+		col++;
 	}
-	painter.end();
+
+	// cleanup
+	painter->end();
+	delete painter;
+	painter = NULL;
 	profile->setPrintMode(false);
 	profile->resize(originalSize);
 	profile->clear();
 	profile->plot(current_dive, true);
 }
 
-void PrintLayout::printTwoDives() const
-{
-	// nop
-}
-
 void PrintLayout::printTable()
 {
 	// create and setup a table
diff --git a/qt-ui/printlayout.h b/qt-ui/printlayout.h
index ac363ab8d..79c1d658e 100644
--- a/qt-ui/printlayout.h
+++ b/qt-ui/printlayout.h
@@ -19,9 +19,9 @@ public:
 private:
 	PrintDialog *dialog;
 	QPrinter *printer;
+	QPainter *painter;
 	struct options *printOptions;
 
-	QPainter *painter;
 	int screenDpiX, screenDpiY, printerDpi, scaledPageW, scaledPageH;
 	qreal scaleX, scaleY;
 	QRect pageRect;
@@ -31,8 +31,7 @@ private:
 	unsigned int tablePrintHeadingBackground;
 
 	void setup();
-	void printSixDives() const;
-	void printTwoDives() const;
+	void printProfileDives(int divesPerRow, int divesPerColumn);
 	void printTable();
 	void addTablePrintDataRow(TablePrintModel *model, int row, struct dive *dive) const;
 	void addTablePrintHeadingRow(TablePrintModel *model, int row) const;