support style for lvgl

examples/lvgl/lv_style1.py

@@ -0,0 +1,24 @@
+import pika_lvgl as lv
+import PikaStdLib
+mem = PikaStdLib.MemChecker()
+
+style = lv.style_t()
+style.init()
+
+# Set a background color and a radius
+style.set_radius(5)
+style.set_bg_opa(lv.OPA.COVER)
+style.set_bg_color(lv.palette_lighten(lv.PALETTE.GREY, 1))
+
+# Add outline
+style.set_outline_width(2)
+style.set_outline_color(lv.palette_main(lv.PALETTE.BLUE))
+style.set_outline_pad(8)
+
+# Create an object with the new style
+obj = lv.obj(lv.scr_act())
+obj.add_style(style, 0)
+obj.center()
+
+print('mem used max: %0.2f kB' % (mem.getMax()))
+print('mem used now: %0.2f kB' % (mem.getNow()))

package/pika_lvgl/pika_lvgl.c

@@ -2,6 +2,7 @@
 #include "BaseObj.h"
 #include "lvgl.h"
 #include "pika_lvgl_arc.h"
+#include "pika_lvgl_lv_color_t.h"
 #include "pika_lvgl_lv_obj.h"
 
 PikaObj* pika_lv_event_listener_g;
@@ -129,6 +130,10 @@ void pika_lvgl___init__(PikaObj* self) {
     obj_setInt(self, "EVENT.LAYOUT_CHANGED", LV_EVENT_LAYOUT_CHANGED);
     obj_setInt(self, "EVENT.GET_SELF_SIZE", LV_EVENT_GET_SELF_SIZE);
     obj_setInt(self, "EVENT.PREPROCESS", LV_EVENT_PREPROCESS);
+
+    obj_newDirectObj(self, "OPA", New_TinyObj);
+    obj_setInt(self, "OPA.TRANSP", LV_OPA_TRANSP);
+    obj_setInt(self, "OPA.COVER", LV_OPA_COVER);
 }
 
 PikaObj* pika_lvgl_obj(PikaObj* self, PikaObj* parent) {
@@ -138,3 +143,21 @@ PikaObj* pika_lvgl_obj(PikaObj* self, PikaObj* parent) {
     obj_setPtr(new_obj, "lv_obj", lv_obj);
     return new_obj;
 }
+
+PikaObj* pika_lvgl_palette_lighten(PikaObj* self, int lvl, int p) {
+    PikaObj* new_obj = newNormalObj(New_pika_lvgl_lv_color_t);
+    lv_color_t lv_color = lv_palette_lighten(p, lvl);
+    args_setStruct(new_obj->list, "lv_color_struct", lv_color);
+    lv_color_t* plv_color = args_getStruct(new_obj->list, "lv_color_struct");
+    obj_setPtr(new_obj, "lv_color",plv_color);
+    return new_obj;
+}
+
+PikaObj* pika_lvgl_palette_main(PikaObj* self, int p) {
+    PikaObj* new_obj = newNormalObj(New_pika_lvgl_lv_color_t);
+    lv_color_t lv_color = lv_palette_main(p);
+    args_setStruct(new_obj->list, "lv_color_struct", lv_color);
+    obj_setPtr(new_obj, "lv_color",
+               args_getStruct(new_obj->list, "lv_color_struct"));
+    return new_obj;
+}

package/pika_lvgl/pika_lvgl.pyi

@@ -101,6 +101,11 @@ class PALETTE:
     NONE: int
 
 
+class OPA:
+    TRANSP: int
+    COVER: int
+
+
 class ANIM:
     OFF: int
     ON: int
@@ -110,6 +115,25 @@ class lv_event(TinyObj):
     def get_code(self) -> int: ...
 
 
+class lv_color_t(TinyObj):
+    ...
+
+
+def palette_lighten(p: int, lvl: int) -> lv_color_t: ...
+def palette_main(p: int) -> lv_color_t: ...
+
+
+class style_t(TinyObj):
+    def __init__(self): ...
+    def init(self): ...
+    def set_radius(self, radius: int): ...
+    def set_bg_opa(self, opa: int): ...
+    def set_bg_color(self, color: lv_color_t): ...
+    def set_outline_width(self, w: int): ...
+    def set_outline_color(self, color: lv_color_t): ...
+    def set_outline_pad(self, pad: int): ...
+
+
 class lv_obj(TinyObj):
     def center(self): ...
     def set_size(self, size_x: int, size_y: int): ...
@@ -119,6 +143,7 @@ class lv_obj(TinyObj):
     def set_width(self, w: int): ...
     def add_state(self, state: int): ...
     def add_event_cb(self, event_cb: any, filter: int, user_data: pointer): ...
+    def add_style(self, style: style_t, selector: int): ...
 
 
 def obj(parent: lv_obj) -> lv_obj: ...

package/pika_lvgl/pika_lvgl_lv_obj.c

@@ -91,3 +91,9 @@ void pika_lvgl_lv_obj_add_event_cb(PikaObj* self,
     obj_newDirectObj(self, "_event_evt", New_pika_lvgl_lv_event);
     eventLicener_registEvent(pika_lv_event_listener_g, (uintptr_t)lv_obj, self);
 }
+
+void pika_lvgl_lv_obj_add_style(PikaObj* self, int selector, PikaObj* style) {
+    lv_obj_t* lv_obj = obj_getPtr(self, "lv_obj");
+    lv_state_t* lv_style = obj_getPtr(style, "lv_style");
+    lv_obj_add_style(lv_obj, lv_style, selector);
+}

package/pika_lvgl/pika_lvgl_lv_style_t.c

@@ -0,0 +1,46 @@
+#include "lvgl.h"
+#include "pika_lvgl_style_t.h"
+
+void pika_lvgl_style_t_init(PikaObj* self) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_style_init(lv_style);
+}
+
+void pika_lvgl_style_t_set_bg_color(PikaObj* self, PikaObj* color) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_color_t* lv_color = obj_getPtr(color, "lv_color");
+    lv_style_set_bg_color(lv_style, *lv_color);
+}
+
+void pika_lvgl_style_t_set_bg_opa(PikaObj* self, int opa) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_style_set_bg_opa(lv_style, opa);
+}
+
+void pika_lvgl_style_t_set_outline_color(PikaObj* self, PikaObj* color) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_color_t* lv_color = obj_getPtr(color, "lv_color");
+    lv_style_set_outline_color(lv_style, *lv_color);
+}
+
+void pika_lvgl_style_t_set_outline_pad(PikaObj* self, int pad) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_style_set_outline_pad(lv_style, pad);
+}
+
+void pika_lvgl_style_t_set_outline_width(PikaObj* self, int w) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_style_set_outline_width(lv_style, w);
+}
+
+void pika_lvgl_style_t_set_radius(PikaObj* self, int radius) {
+    lv_style_t* lv_style = obj_getPtr(self, "lv_style");
+    lv_style_set_radius(lv_style, radius);
+}
+
+void pika_lvgl_style_t___init__(PikaObj* self) {
+    lv_style_t lv_style_stack = {0};
+    args_setStruct(self->list, "lv_style_struct", lv_style_stack);
+    lv_style_t* lv_style = args_getStruct(self->list, "lv_style_struct");
+    obj_setPtr(self, "lv_style", lv_style);
+}