支持鼠标的Android设备,左键和右键都能拖动空间或者是都响应系统手势。现在需求是想屏蔽掉鼠标右键的滑动事件,仅响应鼠标左键滑动。
要修改该问题需要了解以下几个常量。
AMOTION_EVENT_BUTTON_PRIMARY 左键
AMOTION_EVENT_BUTTON_SECONDARY 右键
AMOTION_EVENT_BUTTON_TERTIARY 辅助按钮
具体改动如下:
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.cpp b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
index edf4573218..7b29de98be 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
@@ -417,7 +417,8 @@ void CursorInputMapper::sync(nsecs_t when, nsecs_t readTime) {
mSource, displayId, policyFlags, lastButtonState, currentButtonState);
// Send motion event.
- if (downChanged || moved || scrolled || buttonsChanged) {
+ if (downChanged || (moved && mCursorButtonAccumulator.getButtonState() != AMOTION_EVENT_BUTTON_SECONDARY)
+ || scrolled || buttonsChanged) {
int32_t metaState = getContext()->getGlobalMetaState();
int32_t buttonState = lastButtonState;
int32_t motionEventAction;
屏蔽右键的move事件。