Nikolay Sivov : dwrite: Implement SetFlowDirection() for layout.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: bac7e9c65eedcb7fe5ea65d823b67e52aceea5be
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=bac7e9c65eedcb7fe5ea65d823b67e52aceea5be

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Tue Feb  2 23:14:39 2016 +0300

dwrite: Implement SetFlowDirection() for layout.

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dwrite/layout.c | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/dlls/dwrite/layout.c b/dlls/dwrite/layout.c
index 7d647d8..8c611f9 100644
--- a/dlls/dwrite/layout.c
+++ b/dlls/dwrite/layout.c
@@ -400,6 +400,16 @@ static inline HRESULT format_set_wordwrapping(struct dwrite_textformat_data *for
     return S_OK;
 }
 
+static inline HRESULT format_set_flowdirection(struct dwrite_textformat_data *format,
+    DWRITE_FLOW_DIRECTION direction, BOOL *changed)
+{
+    if ((UINT32)direction > DWRITE_FLOW_DIRECTION_RIGHT_TO_LEFT)
+        return E_INVALIDARG;
+    if (changed) *changed = format->flow != direction;
+    format->flow = direction;
+    return S_OK;
+}
+
 static HRESULT get_fontfallback_from_format(const struct dwrite_textformat_data *format, IDWriteFontFallback **fallback)
 {
     *fallback = format->fallback;
@@ -3685,8 +3695,19 @@ static HRESULT WINAPI dwritetextformat1_layout_SetReadingDirection(IDWriteTextFo
 static HRESULT WINAPI dwritetextformat1_layout_SetFlowDirection(IDWriteTextFormat1 *iface, DWRITE_FLOW_DIRECTION direction)
 {
     struct dwrite_textlayout *This = impl_layout_form_IDWriteTextFormat1(iface);
-    FIXME("(%p)->(%d): stub\n", This, direction);
-    return E_NOTIMPL;
+    BOOL changed;
+    HRESULT hr;
+
+    TRACE("(%p)->(%d)\n", This, direction);
+
+    hr = format_set_flowdirection(&This->format, direction, &changed);
+    if (FAILED(hr))
+        return hr;
+
+    if (changed)
+        This->recompute = RECOMPUTE_EVERYTHING;
+
+    return S_OK;
 }
 
 static HRESULT WINAPI dwritetextformat1_layout_SetIncrementalTabStop(IDWriteTextFormat1 *iface, FLOAT tabstop)
@@ -4675,14 +4696,8 @@ static HRESULT WINAPI dwritetextformat_SetReadingDirection(IDWriteTextFormat1 *i
 static HRESULT WINAPI dwritetextformat_SetFlowDirection(IDWriteTextFormat1 *iface, DWRITE_FLOW_DIRECTION direction)
 {
     struct dwrite_textformat *This = impl_from_IDWriteTextFormat1(iface);
-
     TRACE("(%p)->(%d)\n", This, direction);
-
-    if ((UINT32)direction > DWRITE_FLOW_DIRECTION_RIGHT_TO_LEFT)
-        return E_INVALIDARG;
-
-    This->format.flow = direction;
-    return S_OK;
+    return format_set_flowdirection(&This->format, direction, NULL);
 }
 
 static HRESULT WINAPI dwritetextformat_SetIncrementalTabStop(IDWriteTextFormat1 *iface, FLOAT tabstop)