§ 部分:LV_PART_MAIN § p1:圆弧的中心 § radius:弧的半径 § arc_dsc o LV_ARC_DRAW_PART_FOREGROUND 前景弧。 § 部分:LV_PART_INDICATOR § p1:圆弧的中心 § radius:弧的半径 § arc_dsc o LV_ARC_DRAW_PART_KNOB 旋钮 § 部分:LV_PART_KNOB § draw_area:旋钮的面积 -rect_dsc: 按键 ·...
在注册显示驱动的时候调用了lv_disp_drv_init函数,其中又调用了对驱动的draw_ctx_init成员的初始化赋值,即lv_draw_sw_init_ctx,而lv_draw_sw_init_ctx中对一些重复的基础性的绘制函数指针进行了赋值,比如圆弧绘制draw_arc为lv_draw_sw_arc,矩形绘制draw_rect为lv_draw_sw_rect,此外还有背景绘制、字符绘制、图...
lv_canvas_draw_rect(canvas, x, y, width, heigth, &draw_dsc) lv_canvas_draw_text(canvas, x, y, max_width, &draw_dsc, txt, LV_LABEL_ALIGN_LEFT/CENTER/RIGHT) lv_canvas_draw_img(canvas, x, y, &img_src, &draw_dsc) lv_canvas_draw_line(canvas, point_array, point_cnt, &draw_ds...
lv_draw_rect_dsc_init(&draw_dsc); draw_dsc.bg_color = lv_color_hex(0xffaaaa); draw_dsc.radius = LV_RADIUS_CIRCLE; draw_dsc.border_color = lv_color_hex(0xff5555); draw_dsc.border_width = 2; draw_dsc.outline_color = lv_color_hex(0xff0000); draw_dsc.outline_pad = 3; draw_...
draw/sw/lv_draw_sw_polygon.c \ User/lvgl_gui/src/draw/sw/lv_draw_sw_rect.c \ User/lvgl_gui/src/extra/lv_extra.c \ User/lvgl_gui/src/extra/layouts/flex/lv_flex.c \ User/lvgl_gui/src/extra/layouts/grid/lv_grid.c \ User/lvgl_gui/src/extra/others/gridnav/lv_gridnav.c \ ...
绘图实际发生在LV_EVENT_DRAW_POST(绘图结束后)事件,会对频谱对象进行绘制操作。整个过程中使用了绘制矩形(lv_draw_rect)、绘制线条(lv_draw_line)机制等。矩形图代表瞬时的频谱强度,线条用于代表频谱峰值的滞后响应,由于线条的宽度是2 像素,所以看起来也是一个小长方体。它通过循环遍历一个大小为频谱分析结果数据...
整个过程中使用了绘制矩形(lv_draw_rect)、绘制线条(lv_draw_line)机制等。矩形图代表瞬时的频谱强度,线条用于代表频谱峰值的滞后响应,由于线条的宽度是2 像素,所以看起来也是一个小长方体。它通过循环遍历一个大小为频谱分析结果数据SAMPLE_SIZE的数组,绘制矩形和两条线条,其中bar_chart和bar_chart_peaks是用于...
(0xff0000); /* 红色表示未按下 */ } /* 绘制背景和边框 */ lv_draw_rect(clip_area, obj->coords.x1, obj->coords.y1, obj->coords.x2 - obj->coords.x1, obj->coords.y2 - obj->coords.y1, bg_color, border_color, LV_DRAW_BORDER | LV_DRAW_FULL_COVER); }...
[1].opa = LV_OPA_50; rect_dsc.border_width = 2; rect_dsc.border_opa = LV_OPA_90; rect_dsc.border_color = lv_color_white(); rect_dsc.shadow_width = 5; rect_dsc.shadow_offset_x = 5; rect_dsc.shadow_offset_y = 5; lv_draw_label_dsc_t label_dsc; lv_draw_label_dsc_init...
绘图实际发生在LV_EVENT_DRAW_POST(绘图结束后)事件,会对频谱对象进行绘制操作。整个过程中使用了绘制矩形(lv_draw_rect)、绘制线条(lv_draw_line)机制等。矩形图代表瞬时的频谱强度,线条用于代表频谱峰值的滞后响应,由于线条的宽度是2 像素,所以看起来也是一个小长方体。它通过循环遍历一个大小为频谱分析结果数据...