Snap for 7280565 from eecbedf4bd5479cfae7af7e1038ce8c8580c5840 to sc-releaseandroid-vts-12.0_r9android-vts-12.0_r8android-vts-12.0_r7android-vts-12.0_r6android-vts-12.0_r5android-vts-12.0_r4android-vts-12.0_r3android-vts-12.0_r2android-vts-12.0_r12android-vts-12.0_r11android-vts-12.0_r10android-vts-12.0_r1android-security-12.0.0_r60android-security-12.0.0_r59android-security-12.0.0_r58android-security-12.0.0_r57android-security-12.0.0_r56android-security-12.0.0_r55android-security-12.0.0_r54android-security-12.0.0_r53android-security-12.0.0_r52android-security-12.0.0_r51android-security-12.0.0_r50android-security-12.0.0_r49android-security-12.0.0_r48android-security-12.0.0_r47android-security-12.0.0_r46android-security-12.0.0_r45android-security-12.0.0_r44android-security-12.0.0_r43android-security-12.0.0_r42android-security-12.0.0_r41android-security-12.0.0_r40android-security-12.0.0_r39android-security-12.0.0_r38android-security-12.0.0_r37android-security-12.0.0_r36android-security-12.0.0_r35android-security-12.0.0_r34android-security-11.0.0_r71android-platform-12.0.0_r9android-platform-12.0.0_r8android-platform-12.0.0_r7android-platform-12.0.0_r6android-platform-12.0.0_r5android-platform-12.0.0_r4android-platform-12.0.0_r32android-platform-12.0.0_r31android-platform-12.0.0_r30android-platform-12.0.0_r3android-platform-12.0.0_r29android-platform-12.0.0_r28android-platform-12.0.0_r27android-platform-12.0.0_r26android-platform-12.0.0_r25android-platform-12.0.0_r24android-platform-12.0.0_r23android-platform-12.0.0_r22android-platform-12.0.0_r21android-platform-12.0.0_r20android-platform-12.0.0_r2android-platform-12.0.0_r19android-platform-12.0.0_r18android-platform-12.0.0_r17android-platform-12.0.0_r16android-platform-12.0.0_r15android-platform-12.0.0_r14android-platform-12.0.0_r13android-platform-12.0.0_r12android-platform-12.0.0_r11android-platform-12.0.0_r10android-platform-12.0.0_r1android-cts-12.0_r9android-cts-12.0_r8android-cts-12.0_r7android-cts-12.0_r6android-cts-12.0_r5android-cts-12.0_r4android-cts-12.0_r3android-cts-12.0_r2android-cts-12.0_r12android-cts-12.0_r11android-cts-12.0_r10android-cts-12.0_r1android-12.0.0_r9android-12.0.0_r8android-12.0.0_r34android-12.0.0_r33android-12.0.0_r31android-12.0.0_r30android-12.0.0_r3android-12.0.0_r25android-12.0.0_r2android-12.0.0_r11android-12.0.0_r10android-12.0.0_r1android12-tests-releaseandroid12-security-releaseandroid12-s5-releaseandroid12-s4-releaseandroid12-s3-releaseandroid12-s2-releaseandroid12-s1-releaseandroid12-releaseandroid12-platform-releaseandroid12-gsi

Change-Id: I67f8d2b125dc2e97c44e63dabac341346118d931

1 files changed, 32 insertions, 0 deletions

diff --git a/src/coord/translate.rs b/src/coord/translate.rs
new file mode 100644
index 0000000..32888be
--- /dev/null
+++ b/src/coord/translate.rs
@@ -0,0 +1,32 @@
+use plotters_backend::BackendCoord;
+use std::ops::Deref;
+
+/// The trait that translates some customized object to the backend coordinate
+pub trait CoordTranslate {
+    type From;
+
+    /// Translate the guest coordinate to the guest coordinate
+    fn translate(&self, from: &Self::From) -> BackendCoord;
+}
+
+impl<C, T> CoordTranslate for T
+where
+    C: CoordTranslate,
+    T: Deref<Target = C>,
+{
+    type From = C::From;
+    fn translate(&self, from: &Self::From) -> BackendCoord {
+        self.deref().translate(from)
+    }
+}
+
+/// The trait indicates that the coordinate system supports reverse transform
+/// This is useful when we need an interactive plot, thus we need to map the event
+/// from the backend coordinate to the logical coordinate
+pub trait ReverseCoordTranslate: CoordTranslate {
+    /// Reverse translate the coordinate from the drawing coordinate to the
+    /// logic coordinate.
+    /// Note: the return value is an option, because it's possible that the drawing
+    /// coordinate isn't able to be represented in te guest coordinate system
+    fn reverse_translate(&self, input: BackendCoord) -> Option<Self::From>;
+}