| 1 | #ifndef LH_MEDIA_QUERY_H |
|---|---|
| 2 | #define LH_MEDIA_QUERY_H |
| 3 | |
| 4 | namespace litehtml |
| 5 | { |
| 6 | struct media_query_expression |
| 7 | { |
| 8 | typedef std::vector<media_query_expression> vector; |
| 9 | media_feature feature; |
| 10 | int val; |
| 11 | int val2; |
| 12 | bool check_as_bool; |
| 13 | |
| 14 | media_query_expression() |
| 15 | { |
| 16 | check_as_bool = false; |
| 17 | feature = media_feature_none; |
| 18 | val = 0; |
| 19 | val2 = 0; |
| 20 | } |
| 21 | |
| 22 | bool check(const media_features& features) const; |
| 23 | }; |
| 24 | |
| 25 | class media_query |
| 26 | { |
| 27 | public: |
| 28 | typedef std::shared_ptr<media_query> ptr; |
| 29 | typedef std::vector<media_query::ptr> vector; |
| 30 | private: |
| 31 | media_query_expression::vector m_expressions; |
| 32 | bool m_not; |
| 33 | media_type m_media_type; |
| 34 | public: |
| 35 | media_query(); |
| 36 | media_query(const media_query& val); |
| 37 | |
| 38 | static media_query::ptr create_from_string(const tstring& str, const std::shared_ptr<document>& doc); |
| 39 | bool check(const media_features& features) const; |
| 40 | }; |
| 41 | |
| 42 | class media_query_list |
| 43 | { |
| 44 | public: |
| 45 | typedef std::shared_ptr<media_query_list> ptr; |
| 46 | typedef std::vector<media_query_list::ptr> vector; |
| 47 | private: |
| 48 | media_query::vector m_queries; |
| 49 | bool m_is_used; |
| 50 | public: |
| 51 | media_query_list(); |
| 52 | media_query_list(const media_query_list& val); |
| 53 | |
| 54 | static media_query_list::ptr create_from_string(const tstring& str, const std::shared_ptr<document>& doc); |
| 55 | bool is_used() const; |
| 56 | bool apply_media_features(const media_features& features); // returns true if the m_is_used changed |
| 57 | }; |
| 58 | |
| 59 | inline media_query_list::media_query_list(const media_query_list& val) |
| 60 | { |
| 61 | m_is_used = val.m_is_used; |
| 62 | m_queries = val.m_queries; |
| 63 | } |
| 64 | |
| 65 | inline media_query_list::media_query_list() |
| 66 | { |
| 67 | m_is_used = false; |
| 68 | } |
| 69 | |
| 70 | inline bool media_query_list::is_used() const |
| 71 | { |
| 72 | return m_is_used; |
| 73 | } |
| 74 | |
| 75 | } |
| 76 | |
| 77 | #endif // LH_MEDIA_QUERY_H |
| 78 |