1 /** 2 * @file lv_scale_private.h 3 * 4 */ 5 6 #ifndef LV_SCALE_PRIVATE_H 7 #define LV_SCALE_PRIVATE_H 8 9 #ifdef __cplusplus 10 extern "C" { 11 #endif 12 13 /********************* 14 * INCLUDES 15 *********************/ 16 17 #include "lv_scale.h" 18 19 #if LV_USE_SCALE != 0 20 #include "../../core/lv_obj_private.h" 21 22 /********************* 23 * DEFINES 24 *********************/ 25 26 /********************** 27 * TYPEDEFS 28 **********************/ 29 30 struct _lv_scale_section_t { 31 lv_style_t * main_style; /**< Style to use for MAIN part(s) of scale 32 * when it falls within this section's range */ 33 lv_style_t * indicator_style; /**< Style to use for INDICATOR part(s) of scale 34 * when it falls within this section's range */ 35 lv_style_t * items_style; /**< Style to use for ITEMS part(s) of scale 36 * when it falls within this section's range */ 37 int32_t range_min; /**< Scale parts with value >= this value will be drawn using applicable style. */ 38 int32_t range_max; /**< Scale parts with value <= this value will be drawn using applicable style. */ 39 uint32_t first_tick_idx_in_section; /**< Internal (set during drawing): Tick index of first tick that falls within 40 * this section; LV_SCALE_TICK_IDX_DEFAULT_ID if section contains no ticks. */ 41 uint32_t last_tick_idx_in_section; /**< Internal (set during drawing): Tick index of last tick that falls within 42 * this section; LV_SCALE_TICK_IDX_DEFAULT_ID if section contains no ticks. */ 43 int32_t first_tick_in_section_width; /**< Internal (set during drawing) */ 44 int32_t last_tick_in_section_width; /**< Internal (set during drawing) */ 45 lv_point_t first_tick_in_section; /**< Internal (set during drawing) */ 46 lv_point_t last_tick_in_section; /**< Internal (set during drawing) */ 47 uint32_t first_tick_idx_is_major : 1; /**< Internal (set during drawing): true if 48 * `first_tick_idx_in_section` represents a major tick. */ 49 uint32_t last_tick_idx_is_major : 1; /**< Internal (set during drawing): true if 50 * `last_tick_idx_in_section` represents a major tick. */ 51 }; 52 53 struct _lv_scale_t { 54 lv_obj_t obj; /**< Base Widget part of Scale */ 55 lv_ll_t section_ll; /**< Linked list for the sections (stores lv_scale_section_t)*/ 56 const char ** txt_src; /**< Optional list of text strings for major ticks 57 * when custom labels are provided. */ 58 lv_scale_mode_t mode; /**< Orientation and layout of scale. */ 59 int32_t range_min; /**< Scale's minimum value */ 60 int32_t range_max; /**< Scale's maximum value */ 61 uint32_t total_tick_count : 15; /**< Total number of ticks (major and minor) */ 62 uint32_t major_tick_every : 15; /**< Frequency of major ticks to minor ticks */ 63 uint32_t label_enabled : 1; /**< Draw labels for major ticks? */ 64 uint32_t post_draw : 1; /**< false: drawing occurs during LV_EVENT_DRAW_MAIN; 65 * true : drawing occurs during LV_EVENT_DRAW_POST. */ 66 uint32_t draw_ticks_on_top : 1; /**< Draw ticks on top of main line? */ 67 /* Round scale */ 68 uint32_t angle_range; /**< Degrees between low end and high end of scale */ 69 int32_t rotation; /**< Clockwise angular offset from 3-o'clock position of low end of scale */ 70 /* Private properties */ 71 int32_t custom_label_cnt; /**< Number of custom labels provided in `txt_src` */ 72 int32_t last_tick_width; /**< Width of last tick in pixels */ 73 int32_t first_tick_width; /**< Width of first tick in pixels */ 74 }; 75 76 77 /********************** 78 * GLOBAL PROTOTYPES 79 **********************/ 80 81 /********************** 82 * MACROS 83 **********************/ 84 85 #endif /* LV_USE_SCALE != 0 */ 86 87 #ifdef __cplusplus 88 } /*extern "C"*/ 89 #endif 90 91 #endif /*LV_SCALE_PRIVATE_H*/ 92
