AuroraMiddleware/qt5base-lts
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fingerpaint example: Use the maximum diameter for the touch spot by default

Browse Source 
The result doesn't look good when you paint with the MinimumDiameter (3 px).
Also don't paint released touch points, because we can't get neither the
touch rect not the pressure for them.

Change-Id: I8d17c4884ae41545b2cd3f208afa73262133456c
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
This commit is contained in:
Alexander Volkov 2015-05-14 18:45:33 +03:00
parent 0c85cdb8c2
commit 431e5d9f47
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
examples/touch/fingerpaint/scribblearea.cpp
View File

@ -187,13 +187,14 @@ bool ScribbleArea::event(QEvent *event)
foreach (const QTouchEvent::TouchPoint &touchPoint, touchPoints) {
switch (touchPoint.state()) {
case Qt::TouchPointStationary:
// don't do anything if this touch point hasn't moved
case Qt::TouchPointReleased:
// don't do anything if this touch point hasn't moved or has been released
continue;
default:
{
QRectF rect = touchPoint.rect();
if (rect.isEmpty()) {
qreal diameter = MinimumDiameter;
qreal diameter = MaximumDiameter;
if (touch->device()->capabilities() & QTouchDevice::Pressure)
diameter = MinimumDiameter + (MaximumDiameter - MinimumDiameter) * touchPoint.pressure();
rect.setSize(QSizeF(diameter, diameter));