Add Display.top() + left(), useful for combining multi-monitor captures

src/common/dxgi.rs

@@ -68,4 +68,20 @@ impl Display {
     pub fn height(&self) -> usize {
         self.0.height() as usize
     }
+
+    pub fn top(&self) -> i32 {
+        self.0.top()
+    }
+
+    pub fn bottom(&self) -> i32 {
+        self.0.bottom()
+    }
+
+    pub fn left(&self) -> i32 {
+        self.0.left()
+    }
+
+    pub fn right(&self) -> i32 {
+        self.0.right()
+    }
 }

src/common/quartz.rs

@@ -97,4 +97,20 @@ impl Display {
     pub fn height(&self) -> usize {
         self.0.height()
     }
+
+    pub fn top(&self) -> i32 {
+        self.0.top() as i32
+    }
+
+    pub fn bottom(&self) -> i32 {
+        (self.0.top() as i32) + (self.0.height() as i32)
+    }
+
+    pub fn left(&self) -> i32 {
+        self.0.left() as i32
+    }
+
+    pub fn right(&self) -> i32 {
+        (self.0.left() as i32) + (self.0.width() as i32)
+    }
 }

src/common/x11.rs

@@ -68,4 +68,20 @@ impl Display {
     pub fn height(&self) -> usize {
         self.0.rect().h as usize
     }
+
+    pub fn top(&self) -> i32 {
+        self.0.rect().y as i32
+    }
+
+    pub fn bottom(&self) -> i32 {
+        (self.0.rect().y + self.0.rect().h as i16) as i32
+    }
+
+    pub fn left(&self) -> i32 {
+        self.0.rect().x as i32
+    }
+
+    pub fn right(&self) -> i32 {
+        (self.0.rect().x + self.0.rect().w as i16) as i32
+    }
 }

src/dxgi/mod.rs

@@ -391,6 +391,22 @@ impl Display {
         self.desc.DesktopCoordinates.top
     }
 
+    pub fn top(&self) -> LONG {
+        self.desc.DesktopCoordinates.top
+    }
+
+    pub fn bottom(&self) -> LONG {
+        self.desc.DesktopCoordinates.bottom
+    }
+
+    pub fn left(&self) -> LONG {
+        self.desc.DesktopCoordinates.left
+    }
+
+    pub fn right(&self) -> LONG {
+        self.desc.DesktopCoordinates.right
+    }
+
     pub fn rotation(&self) -> DXGI_MODE_ROTATION {
         self.desc.Rotation
     }

src/quartz/display.rs

@@ -40,6 +40,14 @@ impl Display {
         unsafe { CGDisplayPixelsHigh(self.0) }
     }
 
+    pub fn top(self) -> f64 {
+        unsafe { CGDisplayBounds(self.0).origin.y }
+    }
+
+    pub fn left(self) -> f64 {
+        unsafe { CGDisplayBounds(self.0).origin.x }
+    }
+
     pub fn is_builtin(self) -> bool {
         unsafe { CGDisplayIsBuiltin(self.0) != 0 }
     }

src/quartz/ffi.rs

@@ -126,6 +126,32 @@ pub type FrameAvailableHandler = RcBlock<(
     CGDisplayStreamUpdateRef // updateRef
 ), ()>;
 
+#[cfg(target_pointer_width = "64")]
+pub type CGFloat = libc::c_double;
+#[cfg(not(target_pointer_width = "64"))]
+pub type CGFloat = libc::c_float;
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Default)]
+pub struct CGPoint {
+    pub x: CGFloat,
+    pub y: CGFloat,
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Default)]
+pub struct CGSize {
+    pub width: CGFloat,
+    pub height: CGFloat,
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Default)]
+pub struct CGRect {
+    pub origin: CGPoint,
+    pub size: CGSize,
+}
+
 #[link(name="System", kind="dylib")]
 #[link(name="CoreGraphics", kind="framework")]
 #[link(name="CoreFoundation", kind="framework")]
@@ -159,6 +185,7 @@ extern {
     pub fn CGMainDisplayID() -> u32;
     pub fn CGDisplayPixelsWide(display: u32) -> usize;
     pub fn CGDisplayPixelsHigh(display: u32) -> usize;
+    pub fn CGDisplayBounds(display: u32) -> CGRect;
 
     pub fn CGGetOnlineDisplayList(
         max_displays: u32,