1 files changed, 73 insertions, 0 deletions
diff --git a/src/boost/tools/build/example/qt/qt3/hello/canvas.cpp b/src/boost/tools/build/example/qt/qt3/hello/canvas.cpp
new file mode 100644
index 000000000..823e827a4
--- /dev/null
+++ b/src/boost/tools/build/example/qt/qt3/hello/canvas.cpp
@@ -0,0 +1,73 @@
+// Copyright Vladimir Prus 2004.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.txt
+// or copy at https://www.bfgroup.xyz/b2/LICENSE.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();
+}
+