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/*
mapwidget.cc
This file is part of the Project::OSiRiON world editor
and is distributed under the terms and conditions of
the GNU General Public License version 2
*/
#include "mapwidget.h"
#include "mapentity.h"
#include <QPainter>
#include <QMouseEvent>
#include <QWheelEvent>
#include <QDebug>
#include <QtGui>
namespace editor
{
MapWidget::MapWidget(QWidget *parent) : QWidget(parent)
{
//setMinimumSize(256,256);
// zoom sucks but it works
mapwidget_zoom = 16;
// center of the map (used for dragging)
center_x = 0;
center_y = 0;
}
void MapWidget::wheelEvent(QWheelEvent *event)
{
if (event->orientation() == Qt::Vertical) {
int oldzoom = mapwidget_zoom;
mapwidget_zoom -= event->delta() / 120;
if (mapwidget_zoom < 1)
mapwidget_zoom = 1;
else if (mapwidget_zoom > 64) {
mapwidget_zoom = 64;
}
center_x = center_x * oldzoom / mapwidget_zoom;
center_y = center_y * oldzoom / mapwidget_zoom;
resizeChildren();
update();
event->accept();
}
}
void MapWidget::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::RightButton) {
dragstart_x = event->pos().x();
dragstart_y = event->pos().y();
event->accept();
is_dragging = true;
} else {
is_dragging = false;
}
}
void MapWidget::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::RightButton) {
is_dragging = false;
}
}
void MapWidget::mouseMoveEvent(QMouseEvent *event)
{
if (is_dragging) {
int delta_x = event->pos().x() - dragstart_x;
int delta_y = event->pos().y() - dragstart_y;
center_x += delta_x;
center_y += delta_y;
//qDebug() << "dragging " << delta_x << " " << delta_y;
dragstart_x = event->pos().x();
dragstart_y = event->pos().y();
event->accept();
resizeChildren();
update();
}
}
void MapWidget::resizeChildren()
{
const float scale = (float) width() / (float) (mapwidget_zoom * 256);
for (int i = 0; i < mapwidget_enties.size(); ++i) {
MapEntity * entity = mapwidget_enties.at(i);
int radius = (int) (entity->radius() * scale);
if (radius < 6)
radius = 6;
int x = width() / 2 - (int) (entity->location(1) * scale) - radius;
int y = height() / 2 - (int)(entity->location(0) * scale) - radius;
entity->setGeometry(center_x + x, center_y + y, radius * 2 , radius * 2);
//qDebug() << "Moving entity to " << x << " " << y;
}
}
void MapWidget::select(MapEntity *entity)
{
for (int i = 0; i < mapwidget_enties.size(); ++i) {
MapEntity *mapentity = mapwidget_enties.at(i);
if (entity == mapentity) {
entity->set_selected(true);
//qDebug() << "selected entity " << entity->name();
emit selected(entity);
} else {
mapentity->set_selected(false);
}
}
update();
}
void MapWidget::resizeEvent (QResizeEvent *event)
{
resizeChildren();
}
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 256 game units
// gridsize is the size of one grid square in screen coordinates
int gridsize = width() / mapwidget_zoom;
int x = center_x + width() / 2;
while (x > 0) {
painter.drawLine(x, 0, x, height());
x -= gridsize;
}
x = center_x + width() / 2 + gridsize;
while (x <= width()) {
painter.drawLine(x, 0, x, height());
x += gridsize;
}
int y = center_y + height() / 2;
while (y > 0) {
painter.drawLine(0, y, width(), y);
y -= gridsize;
}
y = center_y + height() / 2 + gridsize;
while (y <= height()) {
painter.drawLine(0, y, width(), y);
y += gridsize;
}
QWidget::paintEvent(event);
}
MapEntity *MapWidget::addEntity()
{
MapEntity *mapentity = new MapEntity(this);
mapwidget_enties.append(mapentity);
// connect the MapEntity::clicked() signal to the MapWidget::selected() slot
connect(mapentity, SIGNAL(clicked(MapEntity *)), this, SLOT(select(MapEntity *)));
mapentity->show();
resizeChildren();
update();
return mapentity;
}
}
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