Hi again guys !
I've resolved my problem:
Initially, I made a mistake mixing up Tslib and Evdevtouch plugins. Even though Evdevtouch seems more suitable for my application (a rotation plugin is already coded), I just can't make it work: when i used it, events were happening, but actions (such as buttons) were not even triggered.
So I decided to use Tslib plugin (it already worked for me), and i applied a patch to it, in order to be able to rotate the touchscreen as I wanted. The only thing needed is to export a environment variable with the suitable parameters:
export TSLIB_PARAMETERS=mode=heightxwidth:rotate=angle
where height and width represent the format of your display, and angle, the rotation for the touchscreen (can only be set to values: 0, 90, 180, 270)
an example of application could be:
export TSLIB_PARAMETERS=mode=480x272:rotate=270
export QT_QPA_GENERIC_PLUGINS=tslib:/dev/input/event0
export QT_QPA_FB_TSLIB=1
./name_of_app -platform linuxfb:fb=/dev/fb0:rotation=270
As i cannot join attached files, i post the patch here. But feel free to contact me if you want more info.
--- qtslib.cpp 2016-06-07 14:39:05.664970271 +0200
+++ ./qt5/qtbase/src/platformsupport/input/tslib/qtslib.cpp 2016-06-07 14:43:39.899464647 +0200
@@ -35,6 +35,8 @@
#include <QSocketNotifier>
#include <QStringList>
+#include <QString>
+#include <QPointF>
#include <QPoint>
#include <QLoggingCategory>
@@ -102,6 +104,30 @@
void QTsLibMouseHandler::readMouseData()
{
ts_sample sample;
+ QString spec = QString::fromLocal8Bit(qgetenv("TSLIB_PARAMETERS"));
+ int RotateAngle;
+ int Width;
+ int Height;
+ QString ModeArg;
+
+ if(spec.isEmpty()){
+ RotateAngle = 0;
+ Height = 480;
+ Width = 272;
+ }
+
+ QStringList args = spec.split(QLatin1Char(':'));
+ for (int i = 0; i < args.count(); ++i) {
+ if(args.at(i).startsWith(QLatin1String("rotate"))) {
+ QString rotateArg = args.at(i).section(QLatin1Char('='), 1, 1);
+ RotateAngle = rotateArg.toInt();
+ }
+ else if(args.at(i).startsWith(QLatin1String("mode"))) {
+ ModeArg = args.at(i).section(QLatin1Char('='), 1, 1);
+ Width = ModeArg.section(QLatin1Char('x'),0,0).toInt();
+ Height= ModeArg.section(QLatin1Char('x'),1,1).toInt();
+ }
+ }
while (get_sample(m_dev, &sample, m_rawMode)) {
bool pressed = sample.pressure;
@@ -121,8 +147,29 @@
if (dx*dx <= 4 && dy*dy <= 4 && pressed == m_pressed)
continue;
}
- QPoint pos(x, y);
-
+ QPoint pos(x,y);
+ //Switch to apply rotation
+ switch (RotateAngle) {
+ case 0:
+ pos.setX(x);
+ pos.setY(y);
+ break;
+ case 90:
+ pos.setX(y);
+ pos.setY(Width-x);
+ break;
+ case 180:
+ pos.setX(Width-x);
+ pos.setY(Height-y);
+ break;
+ case 270:
+ pos.setX(Height-y);
+ pos.setY(x);
+ break;
+ default:
+ break;
+ }
+
QWindowSystemInterface::handleMouseEvent(0, pos, pos, pressed ? Qt::LeftButton : Qt::NoButton);
m_x = x;
