Replace SkTypeface::Style with SkFontStyle.

Review URL: https://codereview.chromium.org/488143002

1 files changed, 72 insertions, 0 deletions

diff --git a/include/core/SkFontStyle.h b/include/core/SkFontStyle.h
new file mode 100644
index 0000000000..f42d7dd470
--- /dev/null
+++ b/include/core/SkFontStyle.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkFontStyle_DEFINED
+#define SkFontStyle_DEFINED
+
+#include "SkTypes.h"
+
+class SK_API SkFontStyle {
+public:
+    enum Weight {
+        kThin_Weight        = 100,
+        kExtraLight_Weight  = 200,
+        kLight_Weight       = 300,
+        kNormal_Weight      = 400,
+        kMedium_Weight      = 500,
+        kSemiBold_Weight    = 600,
+        kBold_Weight        = 700,
+        kExtraBold_Weight   = 800,
+        kBlack_Weight       = 900
+    };
+
+    enum Width {
+        kUltraCondensed_Width   = 1,
+        kExtraCondensed_Width   = 2,
+        kCondensed_Width        = 3,
+        kSemiCondensed_Width    = 4,
+        kNormal_Width           = 5,
+        kSemiExpanded_Width     = 6,
+        kExpanded_Width         = 7,
+        kExtraExpanded_Width    = 8,
+        kUltaExpanded_Width     = 9
+    };
+
+    enum Slant {
+        kUpright_Slant,
+        kItalic_Slant,
+    };
+
+    SkFontStyle();
+    SkFontStyle(int weight, int width, Slant);
+    /** oldStyle means the style-bits in SkTypeface::Style: bold=1, italic=2 */
+    explicit SkFontStyle(unsigned oldStyle);
+
+    bool operator==(const SkFontStyle& rhs) const {
+        return fUnion.fU32 == rhs.fUnion.fU32;
+    }
+
+    int weight() const { return fUnion.fR.fWeight; }
+    int width() const { return fUnion.fR.fWidth; }
+    Slant slant() const { return (Slant)fUnion.fR.fSlant; }
+
+    bool isItalic() const {
+        return kItalic_Slant == fUnion.fR.fSlant;
+    }
+
+private:
+    union {
+        struct {
+            uint16_t fWeight;   // 100 .. 900
+            uint8_t  fWidth;    // 1 .. 9
+            uint8_t  fSlant;    // 0 .. 2
+        } fR;
+        uint32_t    fU32;
+    } fUnion;
+};
+
+#endif