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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
commitbd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch)
tree7a520322212d48ebcb9fbe1087e7fca28b76185c /examples/layout
downloadqt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz
qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip
Add Qt3 development HEAD version
Diffstat (limited to 'examples/layout')
-rw-r--r--examples/layout/layout.cpp159
-rw-r--r--examples/layout/layout.doc17
-rw-r--r--examples/layout/layout.pro10
3 files changed, 186 insertions, 0 deletions
diff --git a/examples/layout/layout.cpp b/examples/layout/layout.cpp
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+++ b/examples/layout/layout.cpp
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+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for Qt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qapplication.h>
+#include <qlabel.h>
+#include <qcolor.h>
+#include <qpushbutton.h>
+#include <qlayout.h>
+#include <qlineedit.h>
+#include <qmultilineedit.h>
+#include <qmenubar.h>
+#include <qpopupmenu.h>
+
+class ExampleWidget : public QWidget
+{
+public:
+ ExampleWidget( QWidget *parent = 0, const char *name = 0 );
+ ~ExampleWidget();
+};
+
+ExampleWidget::ExampleWidget( QWidget *parent, const char *name )
+ : QWidget( parent, name )
+{
+ // Make the top-level layout; a vertical box to contain all widgets
+ // and sub-layouts.
+ QBoxLayout *topLayout = new QVBoxLayout( this, 5 );
+
+ // Create a menubar...
+ QMenuBar *menubar = new QMenuBar( this );
+ menubar->setSeparator( QMenuBar::InWindowsStyle );
+ QPopupMenu* popup;
+ popup = new QPopupMenu( this );
+ popup->insertItem( "&Quit", qApp, SLOT(quit()) );
+ menubar->insertItem( "&File", popup );
+
+ // ...and tell the layout about it.
+ topLayout->setMenuBar( menubar );
+
+ // Make an hbox that will hold a row of buttons.
+ QBoxLayout *buttons = new QHBoxLayout( topLayout );
+ int i;
+ for ( i = 1; i <= 4; i++ ) {
+ QPushButton* but = new QPushButton( this );
+ QString s;
+ s.sprintf( "Button %d", i );
+ but->setText( s );
+
+ // Set horizontal stretch factor to 10 to let the buttons
+ // stretch horizontally. The buttons will not stretch
+ // vertically, since bigWidget below will take up vertical
+ // stretch.
+ buttons->addWidget( but, 10 );
+ // (Actually, the result would have been the same with a
+ // stretch factor of 0; if no items in a layout have non-zero
+ // stretch, the space is divided equally between members.)
+ }
+
+ // Make another hbox that will hold a left-justified row of buttons.
+ QBoxLayout *buttons2 = new QHBoxLayout( topLayout );
+
+ QPushButton* but = new QPushButton( "Button five", this );
+ buttons2->addWidget( but );
+
+ but = new QPushButton( "Button 6", this );
+ buttons2->addWidget( but );
+
+ // Fill up the rest of the hbox with stretchable space, so that
+ // the buttons get their minimum width and are pushed to the left.
+ buttons2->addStretch( 10 );
+
+ // Make a big widget that will grab all space in the middle.
+ QMultiLineEdit *bigWidget = new QMultiLineEdit( this );
+ bigWidget->setText( "This widget will get all the remaining space" );
+ bigWidget->setFrameStyle( QFrame::Panel | QFrame::Plain );
+
+ // Set vertical stretch factor to 10 to let the bigWidget stretch
+ // vertically. It will stretch horizontally because there are no
+ // widgets beside it to take up horizontal stretch.
+ // topLayout->addWidget( bigWidget, 10 );
+ topLayout->addWidget( bigWidget );
+
+ // Make a grid that will hold a vertical table of QLabel/QLineEdit
+ // pairs next to a large QMultiLineEdit.
+
+ // Don't use hard-coded row/column numbers in QGridLayout, you'll
+ // regret it when you have to change the layout.
+ const int numRows = 3;
+ const int labelCol = 0;
+ const int linedCol = 1;
+ const int multiCol = 2;
+
+ // Let the grid-layout have a spacing of 10 pixels between
+ // widgets, overriding the default from topLayout.
+ QGridLayout *grid = new QGridLayout( topLayout, 0, 0, 10 );
+ int row;
+
+ for ( row = 0; row < numRows; row++ ) {
+ QLineEdit *ed = new QLineEdit( this );
+ // The line edit goes in the second column
+ grid->addWidget( ed, row, linedCol );
+
+ // Make a label that is a buddy of the line edit
+ QString s;
+ s.sprintf( "Line &%d", row+1 );
+ QLabel *label = new QLabel( ed, s, this );
+ // The label goes in the first column.
+ grid->addWidget( label, row, labelCol );
+ }
+
+ // The multiline edit will cover the entire vertical range of the
+ // grid (rows 0 to numRows) and stay in column 2.
+
+ QMultiLineEdit *med = new QMultiLineEdit( this );
+ grid->addMultiCellWidget( med, 0, -1, multiCol, multiCol );
+
+ // The labels will take the space they need. Let the remaining
+ // horizontal space be shared so that the multiline edit gets
+ // twice as much as the line edit.
+ grid->setColStretch( linedCol, 10 );
+ grid->setColStretch( multiCol, 20 );
+
+ // Add a widget at the bottom.
+ QLabel* sb = new QLabel( this );
+ sb->setText( "Let's pretend this is a status bar" );
+ sb->setFrameStyle( QFrame::Panel | QFrame::Sunken );
+ // This widget will use all horizontal space, and have a fixed height.
+
+ // we should have made a subclass and implemented sizePolicy there...
+ sb->setFixedHeight( sb->sizeHint().height() );
+
+ sb->setAlignment( AlignVCenter | AlignLeft );
+ topLayout->addWidget( sb );
+
+ topLayout->activate();
+}
+
+ExampleWidget::~ExampleWidget()
+{
+ // All child widgets are deleted by Qt.
+ // The top-level layout and all its sub-layouts are deleted by Qt.
+}
+
+int main( int argc, char **argv )
+{
+ QApplication a( argc, argv );
+
+ ExampleWidget f;
+ a.setMainWidget(&f);
+ f.setCaption("Qt Example - Layouts");
+ f.show();
+
+ return a.exec();
+}
diff --git a/examples/layout/layout.doc b/examples/layout/layout.doc
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+++ b/examples/layout/layout.doc
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+/*
+*/
+/*! \page layout-example.html
+
+ \ingroup examples
+ \title Layout Managers
+
+ This example shows simple and intermediate use of Qt's layout
+ classes, QGridLayout, QBoxLayout etc.
+
+ <hr>
+
+ Implementation:
+
+ \include layout/layout.cpp
+*/
+
diff --git a/examples/layout/layout.pro b/examples/layout/layout.pro
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+++ b/examples/layout/layout.pro
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+TEMPLATE = app
+TARGET = layout
+
+CONFIG += qt warn_on release
+DEPENDPATH = ../../include
+
+REQUIRES = large-config
+
+HEADERS =
+SOURCES = layout.cpp