ui: Add option to change touchscreen orientationHEADreplicant-6.0

On devices like the Galaxy Note 8.0, the touchscreen assumes portrait
mode while the recovery is in landscape mode. Allowing to swap x and y
dimension and flipping the x dimension makes the touchscreen usable on
these devices.

Signed-off-by: Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>

1 files changed, 19 insertions, 0 deletions

diff --git a/ui.cpp b/ui.cpp
index c7268fb..bb69b13 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -425,13 +425,24 @@ void RecoveryUI::ProcessAbs(input_device* dev, int code, int value) {
             return;
         }
     }
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY_FLIP_X
     if (code == ABS_MT_POSITION_X) {
+#else
+    if (code == ABS_MT_POSITION_Y) {
+#endif
         dev->saw_pos_x = true;
         dev->touch_pos.x = value * fb_dimensions.x / (dev->touch_max.x - dev->touch_min.x);
     }
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY_FLIP_X
     else if (code == ABS_MT_POSITION_Y) {
+#else
+    else if (code == ABS_MT_POSITION_X) {
+#endif
         dev->saw_pos_y = true;
         dev->touch_pos.y = value * fb_dimensions.y / (dev->touch_max.y - dev->touch_min.y);
+#ifdef RECOVERY_TOUCHSCREEN_SWAP_XY_FLIP_X
+	dev->touch_pos.y = fb_dimensions.y - dev->touch_pos.y;
+#endif
     }
 }
 
@@ -480,13 +491,21 @@ void RecoveryUI::calibrate_touch(input_device* dev) {
 
     struct input_absinfo info;
     memset(&info, 0, sizeof(info));
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY_FLIP_X
     if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_X), &info) == 0) {
+#else
+    if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_Y), &info) == 0) {
+#endif
         dev->touch_min.x = info.minimum;
         dev->touch_max.x = info.maximum;
         dev->touch_pos.x = info.value;
     }
     memset(&info, 0, sizeof(info));
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY_FLIP_X
     if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_Y), &info) == 0) {
+#else
+    if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_X), &info) == 0) {
+#endif
         dev->touch_min.y = info.minimum;
         dev->touch_max.y = info.maximum;
         dev->touch_pos.y = info.value;