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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /examples/drawlines
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
Diffstat (limited to 'examples/drawlines')
-rw-r--r--examples/drawlines/README3
-rw-r--r--examples/drawlines/connect.cpp132
-rw-r--r--examples/drawlines/drawlines.doc20
-rw-r--r--examples/drawlines/drawlines.pro9
4 files changed, 164 insertions, 0 deletions
diff --git a/examples/drawlines/README b/examples/drawlines/README
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index 000000000..2a7c577c6
--- /dev/null
+++ b/examples/drawlines/README
@@ -0,0 +1,3 @@
+The connect program connects points with lines. Drag the mouse
+inside the widget and release it. It was inspired by an example in a
+Windows book.
diff --git a/examples/drawlines/connect.cpp b/examples/drawlines/connect.cpp
new file mode 100644
index 000000000..cfd785ba7
--- /dev/null
+++ b/examples/drawlines/connect.cpp
@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for TQt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qwidget.h>
+#include <qpainter.h>
+#include <qapplication.h>
+#include <stdlib.h>
+
+
+const int MAXPOINTS = 2000; // maximum number of points
+const int MAXCOLORS = 40;
+
+
+//
+// ConnectWidget - draws connected lines
+//
+
+class ConnectWidget : public TQWidget
+{
+public:
+ ConnectWidget( TQWidget *parent=0, const char *name=0 );
+ ~ConnectWidget();
+protected:
+ void paintEvent( TQPaintEvent * );
+ void mousePressEvent( TQMouseEvent *);
+ void mouseReleaseEvent( TQMouseEvent *);
+ void mouseMoveEvent( TQMouseEvent *);
+private:
+ TQPoint *points; // point array
+ TQColor *colors; // color array
+ int count; // count = number of points
+ bool down; // TRUE if mouse down
+};
+
+
+//
+// Constructs a ConnectWidget.
+//
+
+ConnectWidget::ConnectWidget( TQWidget *parent, const char *name )
+ : TQWidget( parent, name, WStaticContents )
+{
+ setBackgroundColor( white ); // white background
+ count = 0;
+ down = FALSE;
+ points = new TQPoint[MAXPOINTS];
+ colors = new TQColor[MAXCOLORS];
+ for ( int i=0; i<MAXCOLORS; i++ ) // init color array
+ colors[i] = TQColor( rand()&255, rand()&255, rand()&255 );
+}
+
+ConnectWidget::~ConnectWidget()
+{
+ delete[] points; // cleanup
+ delete[] colors;
+}
+
+
+//
+// Handles paint events for the connect widget.
+//
+
+void ConnectWidget::paintEvent( TQPaintEvent * )
+{
+ TQPainter paint( this );
+ for ( int i=0; i<count-1; i++ ) { // connect all points
+ for ( int j=i+1; j<count; j++ ) {
+ paint.setPen( colors[rand()%MAXCOLORS] ); // set random pen color
+ paint.drawLine( points[i], points[j] ); // draw line
+ }
+ }
+}
+
+
+//
+// Handles mouse press events for the connect widget.
+//
+
+void ConnectWidget::mousePressEvent( TQMouseEvent * )
+{
+ down = TRUE;
+ count = 0; // start recording points
+ erase(); // erase widget contents
+}
+
+
+//
+// Handles mouse release events for the connect widget.
+//
+
+void ConnectWidget::mouseReleaseEvent( TQMouseEvent * )
+{
+ down = FALSE; // done recording points
+ update(); // draw the lines
+}
+
+
+//
+// Handles mouse move events for the connect widget.
+//
+
+void ConnectWidget::mouseMoveEvent( TQMouseEvent *e )
+{
+ if ( down && count < MAXPOINTS ) {
+ TQPainter paint( this );
+ points[count++] = e->pos(); // add point
+ paint.drawPoint( e->pos() ); // plot point
+ }
+}
+
+
+//
+// Create and display a ConnectWidget.
+//
+
+int main( int argc, char **argv )
+{
+ TQApplication a( argc, argv );
+ ConnectWidget connect;
+#ifndef QT_NO_WIDGET_TOPEXTRA // for TQt/Embedded minimal build
+ connect.setCaption( "TQt Example - Draw lines");
+#endif
+ a.setMainWidget( &connect );
+ connect.show();
+ return a.exec();
+}
diff --git a/examples/drawlines/drawlines.doc b/examples/drawlines/drawlines.doc
new file mode 100644
index 000000000..f0abeec3b
--- /dev/null
+++ b/examples/drawlines/drawlines.doc
@@ -0,0 +1,20 @@
+
+/*
+*/
+/*! \page drawlines-example.html
+
+ \ingroup examples
+ \title Connect the Points
+
+ This example shows very simple mouse-based user interaction and
+ painting without any world transform matrix or other advanced
+ features. Run the program, click the button, move the mouse,
+ release the button, and watch the lines get drawn.
+
+ <hr>
+
+ Implementation:
+
+ \include drawlines/connect.cpp
+*/
+
diff --git a/examples/drawlines/drawlines.pro b/examples/drawlines/drawlines.pro
new file mode 100644
index 000000000..7c4eeb8c1
--- /dev/null
+++ b/examples/drawlines/drawlines.pro
@@ -0,0 +1,9 @@
+TEMPLATE = app
+TARGET = drawlines
+
+CONFIG += qt warn_on release
+DEPENDPATH = ../../include
+
+
+HEADERS =
+SOURCES = connect.cpp