From 7ee2a70c18f899a4845621622241adc578b0400c Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Wed, 23 May 2018 15:41:59 +1000
Subject: Add definitions for bidirectional support to Platform.h and provide
 empty implementations for each platform.

---
 cocoa/PlatCocoa.h  |  4 ++++
 cocoa/PlatCocoa.mm | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+)

(limited to 'cocoa')

diff --git a/cocoa/PlatCocoa.h b/cocoa/PlatCocoa.h
index 940de83d5..bc80e9fce 100644
--- a/cocoa/PlatCocoa.h
+++ b/cocoa/PlatCocoa.h
@@ -98,6 +98,9 @@ public:
 	void DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage) override;
 	void Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back) override;
 	void Copy(PRectangle rc, Scintilla::Point from, Surface &surfaceSource) override;
+	size_t PositionFromX(const IScreenLine *screenLine, XYPOSITION xDistance, bool charPosition) override;
+	XYPOSITION XFromPosition(const IScreenLine *screenLine, size_t caretPosition) override;
+	std::vector<Interval> FindRangeIntervals(const IScreenLine *screenLine, size_t start, size_t end) override;
 	void DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore,
 			    ColourDesired back) override;
 	void DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore,
@@ -116,6 +119,7 @@ public:
 
 	void SetUnicodeMode(bool unicodeMode_) override;
 	void SetDBCSMode(int codePage_) override;
+	void SetBidiR2L(bool bidiR2L_) override;
 }; // SurfaceImpl class
 
 } // Scintilla namespace
diff --git a/cocoa/PlatCocoa.mm b/cocoa/PlatCocoa.mm
index 7d7eafb42..62a0ba5f0 100644
--- a/cocoa/PlatCocoa.mm
+++ b/cocoa/PlatCocoa.mm
@@ -819,6 +819,22 @@ void SurfaceImpl::Copy(PRectangle rc, Scintilla::Point from, Surface &surfaceSou
 
 //--------------------------------------------------------------------------------------------------
 
+// Bidirectional text support for Arabic and Hebrew not currently implemented on Cocoa.
+
+size_t SurfaceImpl::PositionFromX(const IScreenLine *, XYPOSITION, bool) {
+	return 0;
+}
+
+XYPOSITION SurfaceImpl::XFromPosition(const IScreenLine *, size_t) {
+	return 0;
+}
+
+std::vector<Interval> SurfaceImpl::FindRangeIntervals(const IScreenLine *, size_t, size_t) {
+	return std::vector<Interval>();
+}
+
+//--------------------------------------------------------------------------------------------------
+
 void SurfaceImpl::DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text,
 				 ColourDesired fore, ColourDesired back) {
 	FillRectangle(rc, back);
@@ -1034,6 +1050,9 @@ void SurfaceImpl::SetDBCSMode(int codePage_) {
 		codePage = codePage_;
 }
 
+void SurfaceImpl::SetBidiR2L(bool) {
+}
+
 Surface *Surface::Allocate(int) {
 	return new SurfaceImpl();
 }
-- 
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