Piotr Caban : gdi32: Add ETO_PDY flag support in EMFDC_ExtTextOut.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 4446db72ebdaa768ba218940dd286c0edaedf6e8
URL:    https://gitlab.winehq.org/wine/wine/-/commit/4446db72ebdaa768ba218940dd286c0...

Author: Piotr Caban <piotr(a)codeweavers.com>
Date:   Wed Nov 29 20:48:55 2023 +0100

gdi32: Add ETO_PDY flag support in EMFDC_ExtTextOut.

---

 dlls/gdi32/emfdc.c          | 38 +++++++++++++++++++++++++++-----------
 dlls/gdi32/tests/metafile.c | 30 +++++++++++++++++++++++++++---
 2 files changed, 54 insertions(+), 14 deletions(-)

diff --git a/dlls/gdi32/emfdc.c b/dlls/gdi32/emfdc.c
index 63110f57eeb..b2d1c894359 100644
--- a/dlls/gdi32/emfdc.c
+++ b/dlls/gdi32/emfdc.c
@@ -1336,13 +1336,15 @@ BOOL EMFDC_ExtTextOut( DC_ATTR *dc_attr, INT x, INT y, UINT flags, const RECT *r
     HDC hdc = dc_attr_handle( dc_attr );
     FLOAT ex_scale, ey_scale;
     EMREXTTEXTOUTW *emr;
-    int text_height = 0;
+    int text_height = 0, top = y, bottom = y;
     int text_width = 0;
     TEXTMETRICW tm;
-    DWORD size;
+    DWORD dx_len, size;
     BOOL ret;
 
-    size = sizeof(*emr) + ((count+1) & ~1) * sizeof(WCHAR) + count * sizeof(INT);
+    if (!dx && flags & ETO_PDY) return FALSE;
+    dx_len = flags & ETO_PDY ? count * 2 : count;
+    size = sizeof(*emr) + ((count+1) & ~1) * sizeof(WCHAR) + dx_len * sizeof(INT);
 
     TRACE( "%s %s count %d size = %ld\n", debugstr_wn(str, count),
            wine_dbgstr_rect(rect), count, size );
@@ -1399,10 +1401,24 @@ BOOL EMFDC_ExtTextOut( DC_ATTR *dc_attr, INT x, INT y, UINT flags, const RECT *r
     {
         UINT i;
         SIZE str_size;
-        memcpy( (char*)emr + emr->emrtext.offDx, dx, count * sizeof(INT) );
-        for (i = 0; i < count; i++) text_width += dx[i];
+        memcpy( (char*)emr + emr->emrtext.offDx, dx, dx_len * sizeof(INT) );
         if (GetTextExtentPoint32W( hdc, str, count, &str_size ))
             text_height = str_size.cy;
+        if (flags & ETO_PDY)
+        {
+            int cur_y = y;
+            for (i = 0; i < count; i++)
+            {
+                top = min( top, cur_y );
+                bottom = max( bottom, cur_y );
+                text_width += dx[2 * i];
+                cur_y -= dx[2 * i + 1];
+            }
+        }
+        else
+        {
+            for (i = 0; i < count; i++) text_width += dx[i];
+        }
     }
     else
     {
@@ -1451,18 +1467,18 @@ BOOL EMFDC_ExtTextOut( DC_ATTR *dc_attr, INT x, INT y, UINT flags, const RECT *r
         if (!GetTextMetricsW( hdc, &tm )) tm.tmDescent = 0;
         /* Play safe here... it's better to have a bounding box */
         /* that is too big than too small. */
-        emr->rclBounds.top    = y - text_height - 1;
-        emr->rclBounds.bottom = y + tm.tmDescent + 1;
+        emr->rclBounds.top    = top - text_height - 1;
+        emr->rclBounds.bottom = bottom + tm.tmDescent + 1;
         break;
 
     case TA_BOTTOM:
-        emr->rclBounds.top    = y - text_height - 1;
-        emr->rclBounds.bottom = y;
+        emr->rclBounds.top    = top - text_height - 1;
+        emr->rclBounds.bottom = bottom;
         break;
 
     default: /* TA_TOP */
-        emr->rclBounds.top    = y;
-        emr->rclBounds.bottom = y + text_height + 1;
+        emr->rclBounds.top    = top;
+        emr->rclBounds.bottom = bottom + text_height + 1;
     }
     emfdc_update_bounds( emf, &emr->rclBounds );
 
diff --git a/dlls/gdi32/tests/metafile.c b/dlls/gdi32/tests/metafile.c
index 9abd98b0f92..ab7882f9641 100644
--- a/dlls/gdi32/tests/metafile.c
+++ b/dlls/gdi32/tests/metafile.c
@@ -141,10 +141,23 @@ static int CALLBACK eto_emf_enum_proc(HDC hdc, HANDLETABLE *handle_table,
         ok(emr_ExtTextOutW->rclBounds.bottom != -1, "emr_ExtTextOutW->rclBounds.bottom = %ld\n",
                 emr_ExtTextOutW->rclBounds.bottom);
 
-        for(i = 0; i < emr_ExtTextOutW->emrtext.nChars; i++)
+        if(emr_ExtTextOutW->emrtext.fOptions & ETO_PDY)
         {
-            ok(orig_dx[i] == dx[i], "pass %d: dx[%ld] (%d) didn't match %d\n",
-                                     n_record, i, dx[i], orig_dx[i]);
+            ok(emr_ExtTextOutW->rclBounds.top < 0, "emr_ExtTextOutW->rclBounds.top = %ld\n",
+                    emr_ExtTextOutW->rclBounds.top);
+            for(i = 0; i < emr_ExtTextOutW->emrtext.nChars * 2; i++)
+            {
+                ok(orig_dx[i] == dx[i], "pass %d: dx[%ld] (%d) didn't match %d\n",
+                        n_record, i, dx[i], orig_dx[i]);
+            }
+        }
+        else
+        {
+            for(i = 0; i < emr_ExtTextOutW->emrtext.nChars; i++)
+            {
+                ok(orig_dx[2 * i] == dx[i], "pass %d: dx[%ld] (%d) didn't match %d\n",
+                        n_record, i, dx[i], orig_dx[i]);
+            }
         }
         n_record++;
         emr_processed = TRUE;
@@ -214,10 +227,21 @@ static void test_ExtTextOut(void)
     ret = ExtTextOutA(hdcMetafile, 0, 0, 0, &rc, text, lstrlenA(text), NULL);
     ok( ret, "ExtTextOutA error %ld\n", GetLastError());
 
+    ret = ExtTextOutA(hdcMetafile, 0, 0, ETO_PDY, &rc, text, len, NULL);
+    ok( !ret, "ExtTextOutA succeeded\n");
+
     /* 2. pass custom lpDx */
     ret = ExtTextOutA(hdcMetafile, 0, 20, 0, &rc, text, lstrlenA(text), dx);
     ok( ret, "ExtTextOutA error %ld\n", GetLastError());
 
+    for (i = len - 1; i >= 0; i--)
+    {
+        dx[2 * i] = dx[i];
+        dx[2 * i + 1] = 1;
+    }
+    ret = ExtTextOutA(hdcMetafile, 0, 20, ETO_PDY, &rc, text, len, dx);
+    ok( ret, "ExtTextOutA error %ld\n", GetLastError());
+
     /* 3. pass NULL lprc */
     ret = ExtTextOutA(hdcMetafile, 0, 40, 0, NULL, text, lstrlenA(text), NULL);
     ok( ret, "ExtTextOutA error %ld\n", GetLastError());