perfetto-ui: Preperation for adding counter details A couple of preparatory changes for adding details for counters: - Fix a bug where drag_gesture_handler missed out of window mouseup and ended up in a bad state. - Optimise counter rendering for the common case where counter value does not change. - Highlight location of data point on counter track. - Add a resizeable details window. Change-Id: I9784f92e79fc812903bc1a235c76d66b1cf20010
Perfetto is an open-source project for performance instrumentation and tracing of Linux/Android/Chrome platforms and user-space apps.
See www.perfetto.dev for docs.