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nsROCSSPrimitiveValue.h (1991B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 /* DOM object representing values in DOM computed style */
      8 
      9 #ifndef nsROCSSPrimitiveValue_h___
     10 #define nsROCSSPrimitiveValue_h___
     11 
     12 #include "CSSValue.h"
     13 #include "nsCoord.h"
     14 #include "nsString.h"
     15 
     16 /**
     17 * Read-only CSS primitive value - a DOM object representing values in DOM
     18 * computed style.
     19 */
     20 class nsROCSSPrimitiveValue final : public mozilla::dom::CSSValue {
     21 public:
     22  enum : uint16_t {
     23    CSS_UNKNOWN,
     24    CSS_NUMBER,
     25    CSS_PERCENTAGE,
     26    CSS_PX,
     27    CSS_DEG,
     28    CSS_S,
     29    CSS_STRING,
     30    CSS_RGBCOLOR,
     31    CSS_NUMBER_INT32,
     32    CSS_NUMBER_UINT32,
     33  };
     34 
     35  // CSSValue
     36  void GetCssText(nsAString&) final;
     37  uint16_t CssValueType() const final;
     38 
     39  // CSSPrimitiveValue
     40  uint16_t PrimitiveType();
     41 
     42  // nsROCSSPrimitiveValue
     43  nsROCSSPrimitiveValue();
     44 
     45  void SetNumber(float aValue);
     46  void SetNumber(int32_t aValue);
     47  void SetNumber(uint32_t aValue);
     48  void SetPercent(float aValue);
     49  void SetDegree(float aValue);
     50  void SetPixels(float aValue);
     51  void SetString(const nsACString& aString);
     52  void SetString(const nsAString& aString);
     53 
     54  template <size_t N>
     55  void SetString(const char (&aString)[N]) {
     56    SetString(nsLiteralCString(aString));
     57  }
     58 
     59  void SetTime(float aValue);
     60  void Reset();
     61 
     62  virtual ~nsROCSSPrimitiveValue();
     63 
     64 protected:
     65  uint16_t mType;
     66 
     67  union {
     68    float mFloat;
     69    int32_t mInt32;
     70    uint32_t mUint32;
     71    char16_t* mString;
     72  } mValue;
     73 };
     74 
     75 inline nsROCSSPrimitiveValue* mozilla::dom::CSSValue::AsPrimitiveValue() {
     76  return CssValueType() == mozilla::dom::CSSValue::CSS_PRIMITIVE_VALUE
     77             ? static_cast<nsROCSSPrimitiveValue*>(this)
     78             : nullptr;
     79 }
     80 
     81 #endif /* nsROCSSPrimitiveValue_h___ */