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