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// Copyright Vladimir Prus 2004.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
#include "canvas.h"
#include <qlabel.h>
#include <qcanvas.h>
#include <qlayout.h>
Canvas::Canvas(QWidget* parent)
: QWidget(parent)
{
m_pen = QPen(QColor(255, 128, 128));
m_brushes = new QBrush[2];
m_brushes[0] = QBrush(QColor(255, 0, 0));
m_brushes[1] = QBrush(QColor(0, 255, 0));
m_current_brush = 0;
m_canvas = new QCanvas(this);
m_canvas->resize(4*1600, 600);
redraw();
QVBoxLayout* l = new QVBoxLayout(this);
m_canvas_view = new QCanvasView(m_canvas, this);
l->addWidget(m_canvas_view);
m_canvas_view->resize(rect().size());
m_canvas_view->show();
}
Canvas::~Canvas()
{
delete m_brushes;
}
void Canvas::redraw()
{
QCanvasItemList l = m_canvas->allItems();
for(QCanvasItemList::iterator i = l.begin(),
e = l.end(); i != e; ++i)
{
delete *i;
}
unsigned count = 0;
for (unsigned x = 10; x < 4*1600; x += 20)
for (unsigned y = 10; y < 600; y += 20) {
QCanvasRectangle* r = new QCanvasRectangle(x, y, 10, 10, m_canvas);
r->setPen(m_pen);
r->setBrush(m_brushes[m_current_brush]);
r->show();
++count;
QCanvasText* t = new QCanvasText("D", m_canvas);
t->move(x, y);
t->show();
++count;
}
(new QCanvasText(QString::number(count), m_canvas))->show();
m_canvas->setAllChanged();
}
void Canvas::change_color()
{
m_current_brush = (m_current_brush + 1)%2;
redraw();
m_canvas->update();
}
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