[PATCH v3 3/5] gdi32/tests: Add some tests for rotated font metrics.

[Dmitry Timoshkov]

From: Dmitry Timoshkov

Signed-off-by: Dmitry Timoshkov 
---
 dlls/gdi32/tests/font.c | 100 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/dlls/gdi32/tests/font.c b/dlls/gdi32/tests/font.c
index 362ddd381f1..7b66ee9e37c 100644
--- a/dlls/gdi32/tests/font.c
+++ b/dlls/gdi32/tests/font.c
@@ -22,6 +22,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <assert.h>
+#include <math.h>

#include "windef.h"
 #include "winbase.h"
@@ -7862,6 +7863,104 @@ static void test_font_weight(void)
     ok(bret, "got error %ld\n", GetLastError());
 }

+static void test_rotated_metrics(void)
+{
+    static const WCHAR str[] = L"Hello World!";
+    static const struct
+    {
+        float angle_g;
+        POINT pt;
+        LONG tmHeight, tmAscent, tmDescent;
+        SIZE ext;
+    } test[] =
+    {
+        { 0.0f, {50,50}, 87,72,15, {392,87} },
+        { 45.0f, {94,24}, 107,76,31, {391,107} },
+        { 90.0f, {100,-50}, 90,74,16, {391,90} },
+        { 135.0f, {0,-71}, 108,76,32, {391,108} },
+        { 180.0f, {-50,-50}, 87,72,15, {392,87} }
+    };
+    float angle_r;
+    HDC hdc;
+    LOGFONTW lf;
+    HFONT hfont;
+    XFORM xform;
+    TEXTMETRICW tm;
+    POINT pt;
+    SIZE sz;
+    int i;
+
+    hdc = CreateCompatibleDC(0);
+
+    memset(&lf, 0, sizeof(lf));
+    wcscpy(lf.lfFaceName, L"Tahoma");
+    lf.lfHeight = -72;
+    hfont = CreateFontIndirectW(&lf);
+
+    SetGraphicsMode(hdc, GM_ADVANCED);
+    SetMapMode(hdc, MM_TEXT);
+
+    hfont = SelectObject(hdc, hfont);
+
+    pt.x = 100;
+    pt.y = 100;
+    DPtoLP(hdc, &pt, 1);
+    ok(pt.x == 100, "got %ld\n", pt.x);
+    ok(pt.y == 100, "got %ld\n", pt.y);
+
+    GetTextMetricsW(hdc, &tm);
+    ok(match_off_by_n(tm.tmHeight, 87, 5), "got %ld\n", tm.tmHeight);
+    ok(match_off_by_n(tm.tmAscent, 72, 5), "got %ld\n", tm.tmAscent);
+    ok(match_off_by_n(tm.tmDescent, 15, 5), "got %ld\n", tm.tmDescent);
+
+    GetTextExtentPoint32W(hdc, str, wcslen(str), &sz);
+    ok(match_off_by_n(sz.cx, 391, 5), "got %ld\n", sz.cx);
+    ok(match_off_by_n(sz.cy, 87, 5), "got %ld\n", sz.cy);
+
+    for (i = 0; i < ARRAY_SIZE(test); i++)
+    {
+        winetest_push_context("%d", i);
+
+        angle_r = test[i].angle_g * 3.141592f / 180.0f;
+
+        xform.eM11 = cosf(angle_r) * 2.0f;
+        xform.eM12 = sinf(angle_r);
+        xform.eM21 = -xform.eM12 * 2.0f;
+        xform.eM22 = xform.eM11;
+        xform.eDx = 0.0f;
+        xform.eDy = 0.0f;
+        SetWorldTransform(hdc, &xform);
+
+        pt.x = 100;
+        pt.y = 100;
+        DPtoLP(hdc, &pt, 1);
+        ok(pt.x == test[i].pt.x, "got %ld\n", pt.x);
+        ok(pt.y == test[i].pt.y, "got %ld\n", pt.y);
+
+        GetTextMetricsW(hdc, &tm);
+        /* Windows produces noticeable diff for angles 45.0 and 135.0 */
+        todo_wine_if(i != 0 && i != 4)
+        ok(match_off_by_n(tm.tmHeight, test[i].tmHeight, 25), "got %ld\n", tm.tmHeight);
+        todo_wine_if(i != 0 && i != 4)
+        ok(match_off_by_n(tm.tmAscent, test[i].tmAscent, 10), "got %ld\n", tm.tmAscent);
+        todo_wine_if(i != 0 && i != 2 && i != 4)
+        ok(match_off_by_n(tm.tmDescent, test[i].tmDescent, 17), "got %ld\n", tm.tmDescent);
+
+        GetTextExtentPoint32W(hdc, str, wcslen(str), &sz);
+        todo_wine_if(i != 0 && i != 4)
+        ok(match_off_by_n(sz.cx, test[i].ext.cx, 10), "got %ld\n", sz.cx);
+        todo_wine_if(i != 0 && i != 4)
+        ok(match_off_by_n(sz.cy, test[i].ext.cy, 21), "got %ld\n", sz.cy);
+
+        winetest_pop_context();
+    }
+
+    hfont = SelectObject(hdc, hfont);
+    DeleteObject(hfont);
+
+    DeleteDC(hdc);
+}
+
 START_TEST(font)
 {
     static const char *test_names[] =
@@ -7883,6 +7982,7 @@ START_TEST(font)
         return;
     }

+    test_rotated_metrics();
     test_stock_fonts();
     test_logfont();
     test_bitmap_font();