From 141ad1e5ae7588906d8474dfdead5762370ce222 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sat, 18 Feb 2012 16:37:45 +0000
Subject: Added basic map widget

---
 src/Makefile.am   |  6 +++--
 src/mainwindow.cc |  8 +++---
 src/mapwidget.cc  | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/mapwidget.h   | 33 +++++++++++++++++++++++++
 4 files changed, 113 insertions(+), 7 deletions(-)
 create mode 100644 src/mapwidget.cc
 create mode 100644 src/mapwidget.h

diff --git a/src/Makefile.am b/src/Makefile.am
index 231fd8a..7486902 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,12 +4,14 @@ bin_PROGRAMS = editor
 # Remember to include the name of the resource file with the .cpp extension.
 editor_SOURCES = \
 	editor.cc \
-	mainwindow.cc
+	mainwindow.cc \
+	mapwidget.cc
 
 # You have one .h file, it's called editor.h. Therefore, here I list
 # its mocced name, moc_editor.cpp.
 nodist_editor_SOURCES = \
-	moc_mainwindow.cc
+	moc_mainwindow.cc \
+	moc_mapwidget.cc
 
 # This rule lets GNU make create any moc_*.cpp from the equivalent *.h
 moc_%.cc: %.h
diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index e5f8000..e0fe6b2 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -6,8 +6,7 @@
 */
 
 #include <mainwindow.h>
-
-#include <QTextEdit>
+#include <mapwidget.h>
 
 namespace editor
 {
@@ -66,9 +65,8 @@ void MainWindow::init_menu()
 void MainWindow::add_child()
 {
 	// create a child widget
-	// TODO replace QTextEdit qith the actual editor widget
-	QTextEdit *child_widget = new QTextEdit();
-	
+	MapWidget *child_widget = new MapWidget();
+
 	// add the widget to the MDI area,
 	// this will wrap an QMdiSubWindow around it
 	mainwindow_mdiarea->addSubWindow(child_widget);
diff --git a/src/mapwidget.cc b/src/mapwidget.cc
new file mode 100644
index 0000000..3c0d846
--- /dev/null
+++ b/src/mapwidget.cc
@@ -0,0 +1,73 @@
+/*
+   mapwidget.cc
+   This file is part of the Project::OSiRiON zone editor 
+   and is distributed under the terms and conditions of 
+   the GNU General Public License version 2
+*/
+
+#include <mapwidget.h>
+
+#include <QPainter>
+#include <QWheelEvent>
+
+namespace editor
+{
+
+MapWidget::MapWidget(QWidget *parent) : QWidget(parent)
+{
+	setMinimumSize(128,128);
+	
+	// zoom sucks but it works
+	mapwidget_zoom = 4;
+}
+
+void MapWidget::wheelEvent(QWheelEvent *event)
+{
+	if (event->orientation() == Qt::Vertical) {
+		mapwidget_zoom += event->delta() / 120;
+		if (mapwidget_zoom < 1)
+			mapwidget_zoom = 1;
+		else if (mapwidget_zoom > 64) {
+			mapwidget_zoom = 64;
+		}
+		repaint();
+		event->accept();
+	}
+}
+
+void MapWidget::paintEvent(QPaintEvent *event)
+{
+	QPen pen(Qt::blue, 1, Qt::SolidLine);
+	QPainter painter(this);
+	
+	painter.setPen(pen);
+
+	// mapwidget_zoom is used to scale from game units to screen coorinates	
+	// 1 grid square is 128 game units
+	// gridsize is the size of one grid square in screen coordinates
+	int gridsize = 128 / mapwidget_zoom;
+	
+	int x = width() / 2;
+	while (x > 0) {
+		painter.drawLine(x, 0, x, height());
+		x -= gridsize;
+	}
+	x = width() / 2 + gridsize;
+	while (x <= width()) {
+		painter.drawLine(x, 0, x, height());
+		x += gridsize;
+	}
+	
+	int y = height() / 2;
+	while (y > 0) {
+		painter.drawLine(0, y, width(), y);
+		y -= gridsize;
+	}
+	y = height() / 2 + gridsize;
+	while (y <= height()) {
+		painter.drawLine(0, y, width(), y);
+		y += gridsize;
+	}
+}
+
+}
diff --git a/src/mapwidget.h b/src/mapwidget.h
new file mode 100644
index 0000000..fcc8b28
--- /dev/null
+++ b/src/mapwidget.h
@@ -0,0 +1,33 @@
+/*
+   mapwidget.h
+   This file is part of the Project::OSiRiON zone editor 
+   and is distributed under the terms and conditions of 
+   the GNU General Public License version 2
+*/
+
+#ifndef __INCLUDED_EDITOR_MAPWIDGET__
+#define __INCLUDED_EDITOR_MAPWIDGET__
+
+#include <QWidget>
+
+namespace editor
+{
+	
+class MapWidget : public QWidget
+{
+	Q_OBJECT
+	
+public:
+	MapWidget(QWidget *parent = 0);
+
+protected:
+	
+	virtual void paintEvent(QPaintEvent *event);
+	virtual void wheelEvent(QWheelEvent *event);
+private:
+	int mapwidget_zoom;
+};
+
+}
+
+#endif // __INCLUDED_EDITOR_MAPWIDGET__
\ No newline at end of file
-- 
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