d3dx9: Handle newlines in ID3DXFont_DrawText.

dlls/d3dx9_36/font.c

@@ -509,13 +509,42 @@ static INT WINAPI ID3DXFontImpl_DrawTextA(ID3DXFont *iface, ID3DXSprite *sprite,
     return ret;
 }
 
+static const WCHAR *read_line(HDC hdc, const WCHAR *str, int *count,
+        WCHAR *dest, unsigned int *dest_len, int width)
+{
+    unsigned int i = 0;
+    SIZE size;
+
+    *dest_len = 0;
+    while (*count && str[i] != '\n')
+    {
+        --(*count);
+        if (str[i] != '\r')
+            dest[(*dest_len)++] = str[i];
+        ++i;
+    }
+
+    GetTextExtentExPointW(hdc, dest, *dest_len, width, NULL, NULL, &size);
+
+    if (*count && str[i] == '\n')
+    {
+        --(*count);
+        ++i;
+    }
+
+    if (*count)
+        return str + i;
+    return NULL;
+}
+
 static INT WINAPI ID3DXFontImpl_DrawTextW(ID3DXFont *iface, ID3DXSprite *sprite,
         const WCHAR *string, INT count, RECT *rect, DWORD format, D3DCOLOR color)
 {
     struct d3dx_font *font = impl_from_ID3DXFont(iface);
     ID3DXSprite *target = sprite;
+    WCHAR *line;
     RECT textrect = {0};
-    int lh, x, y;
+    int lh, x, y, width;
     int ret = 0;
 
     TRACE("iface %p, sprite %p, string %s, count %d, rect %s, format %#x, color 0x%08x.\n",
@@ -544,36 +573,47 @@ static INT WINAPI ID3DXFontImpl_DrawTextW(ID3DXFont *iface, ID3DXSprite *sprite,
 
     x = textrect.left;
     y = textrect.top;
+    width = textrect.right - textrect.left;
 
     lh = font->metrics.tmHeight;
 
+    line = heap_alloc(count * sizeof(*line));
+    if (!line)
+        return 0;
+
     if (!(format & DT_CALCRECT) && !sprite)
     {
         D3DXCreateSprite(font->device, &target);
         ID3DXSprite_Begin(target, 0);
     }
 
+    while (string)
+    {
+        unsigned int line_len;
+
+        string = read_line(font->hdc, string, &count, line, &line_len, width);
+
         if (!(format & DT_CALCRECT))
         {
             GCP_RESULTSW results;
             D3DXVECTOR3 pos;
-        int i;
+            unsigned int i;
 
             memset(&results, 0, sizeof(results));
-        results.nGlyphs = count;
+            results.nGlyphs = line_len;
 
-        results.lpCaretPos = heap_alloc(count * sizeof(*results.lpCaretPos));
+            results.lpCaretPos = heap_alloc(line_len * sizeof(*results.lpCaretPos));
             if (!results.lpCaretPos)
                 goto cleanup;
 
-        results.lpGlyphs = heap_alloc(count * sizeof(*results.lpGlyphs));
+            results.lpGlyphs = heap_alloc(line_len * sizeof(*results.lpGlyphs));
             if (!results.lpGlyphs)
             {
                 heap_free(results.lpCaretPos);
                 goto cleanup;
             }
 
-        GetCharacterPlacementW(font->hdc, string, count, 0, &results, 0);
+            GetCharacterPlacementW(font->hdc, line, line_len, 0, &results, 0);
 
             for (i = 0; i < results.nGlyphs; ++i)
             {
@@ -597,6 +637,7 @@ static INT WINAPI ID3DXFontImpl_DrawTextW(ID3DXFont *iface, ID3DXSprite *sprite,
             heap_free(results.lpGlyphs);
         }
         y += lh;
+    }
 
     ret = y - textrect.top;
 
@@ -607,6 +648,8 @@ cleanup:
         ID3DXSprite_Release(target);
     }
 
+    heap_free(line);
+
     return ret;
 }
 

dlls/d3dx9_36/tests/core.c

@@ -762,19 +762,19 @@ static void test_ID3DXFont(IDirect3DDevice9 *device)
     todo_wine ok(height == 96, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\na", -1, &rect, 0, 0xff00ff);
-    todo_wine ok(height == 24, "Got unexpected height %d.\n", height);
+    ok(height == 24, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\r\na", -1, &rect, 0, 0xff00ff);
-    todo_wine ok(height == 24, "Got unexpected height %d.\n", height);
+    ok(height == 24, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\ra", -1, &rect, 0, 0xff00ff);
     ok(height == 12, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\na", -1, &rect, DT_SINGLELINE, 0xff00ff);
-    ok(height == 12, "Got unexpected height %d.\n", height);
+    todo_wine ok(height == 12, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\naaaaa aaaa", -1, &rect, 0, 0xff00ff);
-    todo_wine ok(height == 24, "Got unexpected height %d.\n", height);
+    ok(height == 24, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"a\naaaaa aaaa", -1, &rect, DT_WORDBREAK, 0xff00ff);
     todo_wine ok(height == 36, "Got unexpected height %d.\n", height);
@@ -783,7 +783,7 @@ static void test_ID3DXFont(IDirect3DDevice9 *device)
     todo_wine ok(height == 48, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"1\n2\n3\n4\n5\n6", -1, &rect, DT_NOCLIP, 0xff00ff);
-    todo_wine ok(height == 72, "Got unexpected height %d.\n", height);
+    ok(height == 72, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"\t\t\t\t\t\t\t\t\t\t", -1, &rect, DT_WORDBREAK, 0xff00ff);
     todo_wine ok(height == 0, "Got unexpected height %d.\n", height);
@@ -834,10 +834,10 @@ static void test_ID3DXFont(IDirect3DDevice9 *device)
     todo_wine ok(height == 32, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"aaaa\naaaa", -1, &rect, DT_RIGHT, 0xff00ff);
-    todo_wine ok(height == 24, "Got unexpected height %d.\n", height);
+    ok(height == 24, "Got unexpected height %d.\n", height);
 
     height = ID3DXFont_DrawTextW(font, NULL, L"aaaa\naaaa", -1, &rect, DT_CENTER, 0xff00ff);
-    todo_wine ok(height == 24, "Got unexpected height %d.\n", height);
+    ok(height == 24, "Got unexpected height %d.\n", height);
 
     ID3DXFont_Release(font);
 }