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/*
* TDDD86 Tiles
* This file contains the implementation of the mainwindow class.
* See mainwindow.h for comments about each member.
*/
#include <QPointF>
#include <random>
#include "mainwindow.h"
#include "Tile.h"
#include "TileList.h"
// constants
static const int SCENE_WIDTH = 600;
static const int SCENE_HEIGHT = 400;
static const int MIN_SIZE = 20;
static const int MAX_SIZE = 100;
static const int MIN_COLOR = 50;
static const int MAX_COLOR = 255;
static const int TILE_COUNT = 50;
static const bool RANDOM = false; // set to false for repeatable output
MainWindow::MainWindow(QWidget *parent) :
QGraphicsView(parent)
{
// setup graphical window
scene = new QGraphicsScene();
this->setScene(scene);
this->setSceneRect(0, 0, SCENE_WIDTH, SCENE_HEIGHT);
this->setFixedSize(sizeHint());
// place several random tiles on the screen
this->setWindowTitle("Tiles");
for (int i = 0; i < TILE_COUNT; ++i) {
addRandomTile(tlist);
}
tlist.drawAll(scene);
}
/*
* Listens to mouse press events from the graphical subsystem,
* and handles the events appropriately:
* - A left-click is a 'raise' action.
* - A shift-left-click is a 'lower' action.
* - A right-click (or ctrl-click) is a 'delete' action.
* - A shift-right-click (or shift-ctrl-click) is a 'delete all' action.
*/
void MainWindow::mousePressEvent(QMouseEvent *e)
{
QPointF pt = mapToScene(e->pos());
bool modified = false;
switch (e->button()) {
case Qt::LeftButton:
switch (e->modifiers()) {
case Qt::NoModifier:
tlist.raise(pt.x(), pt.y());
modified = true;
break;
case Qt::ShiftModifier:
tlist.lower(pt.x(), pt.y());
modified = true;
break;
}
break;
case Qt::RightButton:
switch (e->modifiers()) {
case Qt::NoModifier:
tlist.remove(pt.x(), pt.y());
modified = true;
break;
case Qt::ShiftModifier:
tlist.removeAll(pt.x(), pt.y());
modified = true;
break;
}
break;
default:
QGraphicsView::mousePressEvent(e);
}
if (modified) {
scene->clear();
tlist.drawAll(scene);
}
}
/*
* Listens to key press events from the graphical subsystem,
* and handles the events appropriately:
* - 'N' creates a new random tile.
*/
void MainWindow::keyPressEvent(QKeyEvent *e)
{
switch (e->key()) {
case Qt::Key_N:
addRandomTile(tlist);
scene->clear();
tlist.drawAll(scene);
break;
default:
QGraphicsView::keyPressEvent(e);
}
}
/*
* Creates a new tile with a random x/y position, width, height, and color,
* and adds it to the given tile list.
*/
void MainWindow::addRandomTile(TileList &tlist)
{
Tile tile;
std::random_device rd;
// possibly use the same random numbers every time for testing
static std::default_random_engine e(RANDOM ? rd() : 42);
std::uniform_int_distribution<unsigned> u1(MIN_COLOR, MAX_COLOR);
std::uniform_int_distribution<unsigned> u2(MIN_SIZE, MAX_SIZE);
tile.width = u2(e);
tile.height = u2(e);
std::uniform_int_distribution<unsigned> u3(0, SCENE_WIDTH - tile.width - 1);
std::uniform_int_distribution<unsigned> u4(0, SCENE_HEIGHT - tile.height - 1);
tile.x = u3(e);
tile.y = u4(e);
tile.r = u1(e);
tile.g = u1(e);
tile.b = u1(e);
tlist.addTile(tile);
}
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