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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_GRAPHICS_PAINT_H_
     18 #define ANDROID_GRAPHICS_PAINT_H_
     19 
     20 #include <cutils/compiler.h>
     21 
     22 #include <SkPaint.h>
     23 #include <string>
     24 
     25 #include <minikin/FontFamily.h>
     26 
     27 namespace android {
     28 
     29 class ANDROID_API Paint : public SkPaint {
     30 public:
     31     // Default values for underlined and strikethrough text,
     32     // as defined by Skia in SkTextFormatParams.h.
     33     constexpr static float kStdStrikeThru_Offset   = (-6.0f / 21.0f);
     34     constexpr static float kStdUnderline_Offset    = (1.0f / 9.0f);
     35     constexpr static float kStdUnderline_Thickness = (1.0f / 18.0f);
     36 
     37     constexpr static float kStdUnderline_Top =
     38             kStdUnderline_Offset - 0.5f * kStdUnderline_Thickness;
     39 
     40     constexpr static float kStdStrikeThru_Thickness = kStdUnderline_Thickness;
     41     constexpr static float kStdStrikeThru_Top =
     42             kStdStrikeThru_Offset - 0.5f * kStdStrikeThru_Thickness;
     43 
     44     Paint();
     45     Paint(const Paint& paint);
     46     Paint(const SkPaint& paint);  // NOLINT(implicit)
     47     ~Paint();
     48 
     49     Paint& operator=(const Paint& other);
     50 
     51     friend bool operator==(const Paint& a, const Paint& b);
     52     friend bool operator!=(const Paint& a, const Paint& b) {
     53         return !(a == b);
     54     }
     55 
     56     void setLetterSpacing(float letterSpacing) {
     57         mLetterSpacing = letterSpacing;
     58     }
     59 
     60     float getLetterSpacing() const {
     61         return mLetterSpacing;
     62     }
     63 
     64     void setWordSpacing(float wordSpacing) {
     65         mWordSpacing = wordSpacing;
     66     }
     67 
     68     float getWordSpacing() const {
     69         return mWordSpacing;
     70     }
     71 
     72     void setFontFeatureSettings(const std::string& fontFeatureSettings) {
     73         mFontFeatureSettings = fontFeatureSettings;
     74     }
     75 
     76     std::string getFontFeatureSettings() const {
     77         return mFontFeatureSettings;
     78     }
     79 
     80     void setMinikinLangListId(uint32_t minikinLangListId) {
     81         mMinikinLangListId = minikinLangListId;
     82     }
     83 
     84     uint32_t getMinikinLangListId() const {
     85         return mMinikinLangListId;
     86     }
     87 
     88     void setFontVariant(minikin::FontVariant variant) {
     89         mFontVariant = variant;
     90     }
     91 
     92     minikin::FontVariant getFontVariant() const {
     93         return mFontVariant;
     94     }
     95 
     96     void setHyphenEdit(uint32_t hyphen) {
     97         mHyphenEdit = hyphen;
     98     }
     99 
    100     uint32_t getHyphenEdit() const {
    101         return mHyphenEdit;
    102     }
    103 
    104 private:
    105     float mLetterSpacing = 0;
    106     float mWordSpacing = 0;
    107     std::string mFontFeatureSettings;
    108     uint32_t mMinikinLangListId;
    109     minikin::FontVariant mFontVariant;
    110     uint32_t mHyphenEdit = 0;
    111 };
    112 
    113 }  // namespace android
    114 
    115 #endif // ANDROID_GRAPHICS_PAINT_H_
    116