LVGL 库提交

2026-08-30 08:57:07 +08:00
parent 26c9098630
commit e2f199c6bf
1056 changed files with 556743 additions and 45 deletions
@@ -0,0 +1,120 @@
+/**
+ * @file lv_grad.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_grad.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_grad_init_stops(lv_grad_dsc_t * dsc, const lv_color_t colors[], const lv_opa_t opa[],
+                        const uint8_t fracs[], int num_stops)
+{
+    LV_ASSERT(num_stops <= LV_GRADIENT_MAX_STOPS);
+    LV_ASSERT(num_stops > 1);
+    LV_ASSERT_NULL(dsc);
+    LV_ASSERT_NULL(colors);
+
+    dsc->stops_count = num_stops;
+    for(int i = 0; i < num_stops; i++) {
+        dsc->stops[i].color = colors[i];
+        dsc->stops[i].opa = opa != NULL ? opa[i] : LV_OPA_COVER;
+        dsc->stops[i].frac = fracs != NULL ? fracs[i] : 255 * i / (num_stops - 1);
+    }
+}
+
+void lv_grad_horizontal_init(lv_grad_dsc_t * dsc)
+{
+    LV_ASSERT_NULL(dsc);
+
+    dsc->dir = LV_GRAD_DIR_HOR;
+}
+
+void lv_grad_vertical_init(lv_grad_dsc_t * dsc)
+{
+    LV_ASSERT_NULL(dsc);
+
+    dsc->dir = LV_GRAD_DIR_VER;
+}
+
+
+#if LV_USE_DRAW_SW_COMPLEX_GRADIENTS
+
+void lv_grad_linear_init(lv_grad_dsc_t * dsc, int32_t from_x, int32_t from_y, int32_t to_x, int32_t to_y,
+                         lv_grad_extend_t extend)
+{
+    LV_ASSERT_NULL(dsc);
+    dsc->dir = LV_GRAD_DIR_LINEAR;
+    dsc->params.linear.start.x = from_x;
+    dsc->params.linear.start.y = from_y;
+    dsc->params.linear.end.x = to_x;
+    dsc->params.linear.end.y = to_y;
+    dsc->extend = extend;
+}
+
+void lv_grad_radial_init(lv_grad_dsc_t * dsc, int32_t center_x, int32_t center_y, int32_t to_x, int32_t to_y,
+                         lv_grad_extend_t extend)
+{
+    LV_ASSERT_NULL(dsc);
+    dsc->dir = LV_GRAD_DIR_RADIAL;
+    dsc->params.radial.focal.x = center_x;
+    dsc->params.radial.focal.y = center_y;
+    dsc->params.radial.focal_extent.x = center_x;
+    dsc->params.radial.focal_extent.y = center_y;
+    dsc->params.radial.end.x = center_x;
+    dsc->params.radial.end.y = center_y;
+    dsc->params.radial.end_extent.x = to_x;
+    dsc->params.radial.end_extent.y = to_y;
+    dsc->extend = extend;
+}
+
+void lv_grad_conical_init(lv_grad_dsc_t * dsc, int32_t center_x, int32_t center_y, int32_t start_angle,
+                          int32_t end_angle, lv_grad_extend_t extend)
+{
+    LV_ASSERT_NULL(dsc);
+    dsc->dir = LV_GRAD_DIR_CONICAL;
+    dsc->params.conical.center.x = center_x;
+    dsc->params.conical.center.y = center_y;
+    dsc->params.conical.start_angle = start_angle;
+    dsc->params.conical.end_angle = end_angle;
+    dsc->extend = extend;
+}
+
+void lv_grad_radial_set_focal(lv_grad_dsc_t * dsc, int32_t center_x, int32_t center_y, int32_t radius)
+{
+    LV_ASSERT_NULL(dsc);
+    dsc->params.radial.focal.x = center_x;
+    dsc->params.radial.focal.y = center_y;
+    dsc->params.radial.focal_extent.x = center_x + radius;
+    dsc->params.radial.focal_extent.y = center_y;
+}
+
+#endif /* LV_USE_DRAW_SW_COMPLEX_GRADIENTS */
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/