| // 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(); |
| } |
| |