Files
qtmultimedia/examples/video/snippets/frequencymonitor/qml/frequencymonitor/FrequencyItem.qml
Gareth Stockwell c1ec175b24 Tidy up frame rate display in video examples
* Use a Column element to position QML and video frame rate counters.
* When using small-screen layouts, hide frame rate counters when dialogs
  or menus are displayed.
* Do not display instantaneous frame rate.  If changes in this rate
  trigger a repaint, then the rate itself is changed.  If the repaint
  occurs in less time than the QElapsedTimer resolution, the displayed
  instantaneous rate is always zero.
* Add a label, so it is clear which is the QML repaint rate, and which
  is the video frame rate.

Change-Id: Ie58ab162ab44bd7f1c4b297eed929b9baa73552c
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
2012-02-08 22:30:49 +01:00

106 lines
3.2 KiB
QML

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import QtQuick 2.0
import FrequencyMonitor 1.0
Rectangle {
id: root
property bool logging: true
property bool displayed: true
property bool enabled: logging || displayed
property alias active: monitor.active
property int samplingInterval: 500
property color textColor: "yellow"
property int textSize: 20
property alias label: monitor.label
border.width: 1
border.color: "yellow"
width: 5.5 * root.textSize
height: 3.0 * root.textSize
color: "black"
opacity: 0.5
radius: 10
visible: displayed && active
// This should ensure that the monitor is on top of all other content
z: 999
function notify() {
monitor.notify()
}
FrequencyMonitor {
id: monitor
samplingInterval: root.enabled ? root.samplingInterval : 0
onAverageFrequencyChanged: {
if (root.logging) trace()
averageFrequencyText.text = monitor.averageFrequency.toFixed(2)
}
}
Text {
id: labelText
anchors {
left: parent.left
top: parent.top
margins: 10
}
color: root.textColor
font.pixelSize: 0.6 * root.textSize
text: root.label
width: root.width - 2*anchors.margins
elide: Text.ElideRight
}
Text {
id: averageFrequencyText
anchors {
right: parent.right
bottom: parent.bottom
margins: 10
}
color: root.textColor
font.pixelSize: root.textSize
}
}