Backport: Add IntegerRectangle to simplify drawing lines without casting.

Backport of changeset 6773:9a027c16f8c3.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/IntegerRectangle.h b/src/IntegerRectangle.h
new file mode 100644
index 000000000..4eaf39c43
--- /dev/null
+++ b/src/IntegerRectangle.h
@@ -0,0 +1,29 @@
+// Scintilla source code edit control
+/** @file IntegerRectangle.h
+ ** A rectangle with integer coordinates.
+ **/
+// Copyright 2018 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#ifndef INTEGERRECTANGLE_H
+#define INTEGERRECTANGLE_H
+
+namespace Scintilla {
+
+struct IntegerRectangle {
+	int left;
+	int top;
+	int right;
+	int bottom;
+
+	explicit IntegerRectangle(PRectangle rc) noexcept :
+		left(static_cast<int>(rc.left)), top(static_cast<int>(rc.top)),
+		right(static_cast<int>(rc.right)), bottom(static_cast<int>(rc.bottom)) {
+	}
+	int Width() const noexcept { return right - left; }
+	int Height() const noexcept { return bottom - top; }
+};
+
+}
+
+#endif