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Diffstat (limited to 'src/libs/lvgl/src/lv_objx/lv_arc.c')
-rw-r--r--src/libs/lvgl/src/lv_objx/lv_arc.c305
1 files changed, 305 insertions, 0 deletions
diff --git a/src/libs/lvgl/src/lv_objx/lv_arc.c b/src/libs/lvgl/src/lv_objx/lv_arc.c
new file mode 100644
index 00000000..e2146a84
--- /dev/null
+++ b/src/libs/lvgl/src/lv_objx/lv_arc.c
@@ -0,0 +1,305 @@
+/**
+ * @file lv_arc.c
+ *
+ */
+
+/*********************
+ * INCLUDES
+ *********************/
+#include "lv_arc.h"
+#if LV_USE_ARC != 0
+
+#include "../lv_core/lv_debug.h"
+#include "../lv_misc/lv_math.h"
+#include "../lv_draw/lv_draw_arc.h"
+#include "../lv_themes/lv_theme.h"
+
+/*********************
+ * DEFINES
+ *********************/
+#define LV_OBJX_NAME "lv_arc"
+
+/**********************
+ * TYPEDEFS
+ **********************/
+
+/**********************
+ * STATIC PROTOTYPES
+ **********************/
+static bool lv_arc_design(lv_obj_t * arc, const lv_area_t * mask, lv_design_mode_t mode);
+static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param);
+
+/**********************
+ * STATIC VARIABLES
+ **********************/
+static lv_signal_cb_t ancestor_signal;
+static lv_design_cb_t ancestor_design;
+
+/**********************
+ * MACROS
+ **********************/
+
+/**********************
+ * GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Create a arc object
+ * @param par pointer to an object, it will be the parent of the new arc
+ * @param copy pointer to a arc object, if not NULL then the new object will be copied from it
+ * @return pointer to the created arc
+ */
+lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
+{
+
+ LV_LOG_TRACE("arc create started");
+
+ /*Create the ancestor of arc*/
+ lv_obj_t * new_arc = lv_obj_create(par, copy);
+ LV_ASSERT_MEM(new_arc);
+ if(new_arc == NULL) return NULL;
+
+ /*Allocate the arc type specific extended data*/
+ lv_arc_ext_t * ext = lv_obj_allocate_ext_attr(new_arc, sizeof(lv_arc_ext_t));
+ LV_ASSERT_MEM(ext);
+ if(ext == NULL) return NULL;
+
+ if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(new_arc);
+ if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_cb(new_arc);
+
+ /*Initialize the allocated 'ext' */
+ ext->angle_start = 45;
+ ext->angle_end = 315;
+
+ /*The signal and design functions are not copied so set them here*/
+ lv_obj_set_signal_cb(new_arc, lv_arc_signal);
+ lv_obj_set_design_cb(new_arc, lv_arc_design);
+
+ /*Init the new arc arc*/
+ if(copy == NULL) {
+ /*Set the default styles*/
+ lv_theme_t * th = lv_theme_get_current();
+ if(th) {
+ lv_arc_set_style(new_arc, LV_ARC_STYLE_MAIN, th->style.arc);
+ } else {
+ lv_arc_set_style(new_arc, LV_ARC_STYLE_MAIN, &lv_style_plain_color);
+ }
+
+ }
+ /*Copy an existing arc*/
+ else {
+ lv_arc_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
+ ext->angle_start = copy_ext->angle_start;
+ ext->angle_end = copy_ext->angle_end;
+
+ /*Refresh the style with new signal function*/
+ lv_obj_refresh_style(new_arc);
+ }
+
+ LV_LOG_INFO("arc created");
+
+ return new_arc;
+}
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*
+ * New object specific "add" or "remove" functions come here
+ */
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/**
+ * Set the start and end angles of an arc. 0 deg: bottom, 90 deg: right etc.
+ * @param arc pointer to an arc object
+ * @param start the start angle [0..360]
+ * @param end the end angle [0..360]
+ */
+void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
+{
+ LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+ lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+ if(start > 360) start = 360;
+ if(end > 360) end = 360;
+
+ ext->angle_start = start;
+ ext->angle_end = end;
+
+ lv_obj_invalidate(arc);
+}
+
+/**
+ * Set a style of a arc.
+ * @param arc pointer to arc object
+ * @param type which style should be set
+ * @param style pointer to a style
+ * */
+void lv_arc_set_style(lv_obj_t * arc, lv_arc_style_t type, const lv_style_t * style)
+{
+ LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+ switch(type) {
+ case LV_ARC_STYLE_MAIN: lv_obj_set_style(arc, style); break;
+ }
+}
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/**
+ * Get the start angle of an arc.
+ * @param arc pointer to an arc object
+ * @return the start angle [0..360]
+ */
+uint16_t lv_arc_get_angle_start(lv_obj_t * arc)
+{
+ LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+ lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+ return ext->angle_start;
+}
+
+/**
+ * Get the end angle of an arc.
+ * @param arc pointer to an arc object
+ * @return the end angle [0..360]
+ */
+uint16_t lv_arc_get_angle_end(lv_obj_t * arc)
+{
+ LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+ lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+ return ext->angle_end;
+}
+
+/**
+ * Get style of a arc.
+ * @param arc pointer to arc object
+ * @param type which style should be get
+ * @return style pointer to the style
+ * */
+const lv_style_t * lv_arc_get_style(const lv_obj_t * arc, lv_arc_style_t type)
+{
+ LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+ const lv_style_t * style = NULL;
+
+ switch(type) {
+ case LV_ARC_STYLE_MAIN: style = lv_obj_get_style(arc); break;
+ default: style = NULL; break;
+ }
+
+ return style;
+}
+
+/*=====================
+ * Other functions
+ *====================*/
+
+/*
+ * New object specific "other" functions come here
+ */
+
+/**********************
+ * STATIC FUNCTIONS
+ **********************/
+
+/**
+ * Handle the drawing related tasks of the arcs
+ * @param arc pointer to an object
+ * @param mask the object will be drawn only in this area
+ * @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
+ * (return 'true' if yes)
+ * LV_DESIGN_DRAW: draw the object (always return 'true')
+ * LV_DESIGN_DRAW_POST: drawing after every children are drawn
+ * @param return true/false, depends on 'mode'
+ */
+static bool lv_arc_design(lv_obj_t * arc, const lv_area_t * mask, lv_design_mode_t mode)
+{
+ /*Return false if the object is not covers the mask_p area*/
+ if(mode == LV_DESIGN_COVER_CHK) {
+ return false;
+ }
+ /*Draw the object*/
+ else if(mode == LV_DESIGN_DRAW_MAIN) {
+ lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+ const lv_style_t * style = lv_arc_get_style(arc, LV_ARC_STYLE_MAIN);
+
+ lv_coord_t r = (LV_MATH_MIN(lv_obj_get_width(arc), lv_obj_get_height(arc))) / 2;
+ lv_coord_t x = arc->coords.x1 + lv_obj_get_width(arc) / 2;
+ lv_coord_t y = arc->coords.y1 + lv_obj_get_height(arc) / 2;
+ lv_opa_t opa_scale = lv_obj_get_opa_scale(arc);
+ lv_draw_arc(x, y, r, mask, ext->angle_start, ext->angle_end, style, opa_scale);
+
+ /*Draw circle on the ends if enabled */
+ if(style->line.rounded) {
+ lv_coord_t thick_half = style->line.width / 2;
+ lv_coord_t cir_x = ((r - thick_half) * lv_trigo_sin(ext->angle_start) >> LV_TRIGO_SHIFT);
+ lv_coord_t cir_y = ((r - thick_half) * lv_trigo_sin(ext->angle_start + 90) >> LV_TRIGO_SHIFT);
+
+ lv_style_t cir_style;
+ lv_style_copy(&cir_style, &lv_style_plain);
+ cir_style.body.grad_color = style->line.color;
+ cir_style.body.main_color = cir_style.body.grad_color;
+ cir_style.body.radius = LV_RADIUS_CIRCLE;
+ lv_area_t cir_area;
+ cir_area.x1 = cir_x + x - thick_half;
+ cir_area.y1 = cir_y + y - thick_half;
+ cir_area.x2 = cir_x + x + thick_half;
+ cir_area.y2 = cir_y + y + thick_half;
+
+ lv_draw_rect(&cir_area, mask, &cir_style, opa_scale);
+
+ cir_x = ((r - thick_half) * lv_trigo_sin(ext->angle_end) >> LV_TRIGO_SHIFT);
+ cir_y = ((r - thick_half) * lv_trigo_sin(ext->angle_end + 90) >> LV_TRIGO_SHIFT);
+
+ cir_area.x1 = cir_x + x - thick_half;
+ cir_area.y1 = cir_y + y - thick_half;
+ cir_area.x2 = cir_x + x + thick_half;
+ cir_area.y2 = cir_y + y + thick_half;
+
+ lv_draw_rect(&cir_area, mask, &cir_style, opa_scale);
+ }
+
+ }
+ /*Post draw when the children are drawn*/
+ else if(mode == LV_DESIGN_DRAW_POST) {
+ }
+
+ return true;
+}
+
+/**
+ * Signal function of the arc
+ * @param arc pointer to a arc object
+ * @param sign a signal type from lv_signal_t enum
+ * @param param pointer to a signal specific variable
+ * @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
+ */
+static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param)
+{
+ lv_res_t res;
+
+ /* Include the ancient signal function */
+ res = ancestor_signal(arc, sign, param);
+ if(res != LV_RES_OK) return res;
+
+ if(sign == LV_SIGNAL_GET_TYPE) return lv_obj_handle_get_type_signal(param, LV_OBJX_NAME);
+
+ if(sign == LV_SIGNAL_CLEANUP) {
+ /*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
+ }
+
+ return res;
+}
+
+#endif
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