[PATCH v2 5/6] riched20: Use PatBlt() instead of FillRect() to paint the background area.

[Huw Davies]

Signed-off-by: Huw Davies <huw(a)codeweavers.com>
---
 dlls/riched20/editor.c | 18 +++++++++++-------
 dlls/riched20/paint.c  | 36 +++++++++++++++++-------------------
 2 files changed, 28 insertions(+), 26 deletions(-)

diff --git a/dlls/riched20/editor.c b/dlls/riched20/editor.c
index b10f719bb0..c4a6902733 100644
--- a/dlls/riched20/editor.c
+++ b/dlls/riched20/editor.c
@@ -4983,42 +4983,46 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
   {
     case WM_PAINT:
     {
-      HDC hDC;
+      HDC hdc;
       RECT rc;
       PAINTSTRUCT ps;
+      HBRUSH old_brush;
 
       update_caret(editor);
-      hDC = BeginPaint(editor->hWnd, &ps);
+      hdc = BeginPaint(editor->hWnd, &ps);
       if (!editor->bEmulateVersion10 || (editor->nEventMask & ENM_UPDATE))
         ME_SendOldNotify(editor, EN_UPDATE);
+      old_brush = SelectObject(hdc, editor->hbrBackground);
+
       /* Erase area outside of the formatting rectangle */
       if (ps.rcPaint.top < editor->rcFormat.top)
       {
         rc = ps.rcPaint;
         rc.bottom = editor->rcFormat.top;
-        FillRect(hDC, &rc, editor->hbrBackground);
+        PatBlt(hdc, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         ps.rcPaint.top = editor->rcFormat.top;
       }
       if (ps.rcPaint.bottom > editor->rcFormat.bottom) {
         rc = ps.rcPaint;
         rc.top = editor->rcFormat.bottom;
-        FillRect(hDC, &rc, editor->hbrBackground);
+        PatBlt(hdc, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         ps.rcPaint.bottom = editor->rcFormat.bottom;
       }
       if (ps.rcPaint.left < editor->rcFormat.left) {
         rc = ps.rcPaint;
         rc.right = editor->rcFormat.left;
-        FillRect(hDC, &rc, editor->hbrBackground);
+        PatBlt(hdc, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         ps.rcPaint.left = editor->rcFormat.left;
       }
       if (ps.rcPaint.right > editor->rcFormat.right) {
         rc = ps.rcPaint;
         rc.left = editor->rcFormat.right;
-        FillRect(hDC, &rc, editor->hbrBackground);
+        PatBlt(hdc, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         ps.rcPaint.right = editor->rcFormat.right;
       }
 
-      ME_PaintContent(editor, hDC, &ps.rcPaint);
+      ME_PaintContent(editor, hdc, &ps.rcPaint);
+      SelectObject(hdc, old_brush);
       EndPaint(editor->hWnd, &ps);
       return 0;
     }
diff --git a/dlls/riched20/paint.c b/dlls/riched20/paint.c
index 94fe0516bd..7212807238 100644
--- a/dlls/riched20/paint.c
+++ b/dlls/riched20/paint.c
@@ -43,6 +43,7 @@ void ME_PaintContent(ME_TextEditor *editor, HDC hDC, const RECT *rcUpdate)
 
   ME_InitContext(&c, editor, hDC);
   SetBkMode(hDC, TRANSPARENT);
+
   item = editor->pBuffer->pFirst->next;
   /* This context point is an offset for the paragraph positions stored
    * during wrapping. It shouldn't be modified during painting. */
@@ -86,7 +87,7 @@ void ME_PaintContent(ME_TextEditor *editor, HDC hDC, const RECT *rcUpdate)
     IntersectRect(&rc, &rc, rcUpdate);
 
     if (!IsRectEmpty(&rc))
-      FillRect(hDC, &rc, c.editor->hbrBackground);
+      PatBlt(hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
   }
   if (editor->nTotalLength != editor->nLastTotalLength ||
       editor->nTotalWidth != editor->nLastTotalWidth)
@@ -597,7 +598,7 @@ static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT
     rc.top = y;
     bounds->top = ME_twips2pointsY(c, para->fmt.dySpaceBefore);
     rc.bottom = y + bounds->top + top_border;
-    FillRect(c->hDC, &rc, c->editor->hbrBackground);
+    PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
   }
 
   if (para->fmt.dwMask & PFM_SPACEAFTER)
@@ -607,7 +608,7 @@ static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT
     rc.bottom = y + para->nHeight;
     bounds->bottom = ME_twips2pointsY(c, para->fmt.dySpaceAfter);
     rc.top = rc.bottom - bounds->bottom - bottom_border;
-    FillRect(c->hDC, &rc, c->editor->hbrBackground);
+    PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
   }
 
   /* Native richedit doesn't support paragraph borders in v1.0 - 4.1,
@@ -646,7 +647,7 @@ static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT
         rc.right = rc.left + border_width;
         rc.top = y + bounds->top;
         rc.bottom = y + para->nHeight - bounds->bottom;
-        FillRect(c->hDC, &rc, c->editor->hbrBackground);
+        PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         MoveToEx(c->hDC, c->pt.x + pen_width + 1, y + bounds->top + DD(4), NULL);
         LineTo(c->hDC, c->pt.x + pen_width + 1, y + para->nHeight - bounds->bottom - DD(8));
       }
@@ -661,7 +662,7 @@ static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT
         rc.right = rc.left + pen_width;
         rc.top = y + bounds->top;
         rc.bottom = y + para->nHeight - bounds->bottom;
-        FillRect(c->hDC, &rc, c->editor->hbrBackground);
+        PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         MoveToEx(c->hDC, rightEdge - 1 - pen_width - 1, y + bounds->top + DD(4), NULL);
         LineTo(c->hDC, rightEdge - 1 - pen_width - 1, y + para->nHeight - bounds->bottom - DD(8));
       }
@@ -725,9 +726,8 @@ static void ME_DrawTableBorders(ME_Context *c, ME_DisplayItem *paragraph)
         rc.top = top + width;
         width = cell->yTextOffset - width;
         rc.bottom = rc.top + width;
-        if (width) {
-          FillRect(c->hDC, &rc, c->editor->hbrBackground);
-        }
+        if (width)
+          PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
       }
       /* Draw cell borders.
        * The order borders are draw in is left, top, bottom, right in order
@@ -966,18 +966,18 @@ static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph)
           rc.bottom = y + p->member.row.nHeight;
         }
         visible = RectVisible(c->hDC, &rc);
-        if (visible) {
-          FillRect(c->hDC, &rc, c->editor->hbrBackground);
-        }
+        if (visible)
+          PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         if (bounds.right)
         {
           /* If scrolled to the right past the end of the text, then
            * there may be space to the right of the paragraph border. */
-          RECT rcAfterBrdr = rc;
-          rcAfterBrdr.left = rc.right + bounds.right;
-          rcAfterBrdr.right = c->rcView.right;
-          if (RectVisible(c->hDC, &rcAfterBrdr))
-            FillRect(c->hDC, &rcAfterBrdr, c->editor->hbrBackground);
+          RECT after_bdr = rc;
+          after_bdr.left = rc.right + bounds.right;
+          after_bdr.right = c->rcView.right;
+          if (RectVisible(c->hDC, &after_bdr))
+            PatBlt(c->hDC, after_bdr.left, after_bdr.top, after_bdr.right - after_bdr.left,
+                   after_bdr.bottom - after_bdr.top, PATCOPY);
         }
         if (me_debug)
         {
@@ -1026,9 +1026,7 @@ static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph)
         rc.top = c->pt.y + para->pt.y + para->nHeight;
         rc.bottom = c->pt.y + p->member.cell.pt.y + p->member.cell.nHeight;
         if (RectVisible(c->hDC, &rc))
-        {
-          FillRect(c->hDC, &rc, c->editor->hbrBackground);
-        }
+          PatBlt(c->hDC, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
         break;
       default:
         break;
-- 
2.18.0