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lv_chart: LV_CHART_VETICAL_LINES fixes

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This commit is contained in:
Gabor Kiss-Vamosi 2019-02-12 06:03:06 +01:00
parent 6871e0252a
commit c71047f359
2 changed files with 25 additions and 38 deletions
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33
lv_objx/lv_chart.c
View File

@ -764,12 +764,18 @@ static void lv_chart_draw_cols(lv_obj_t * chart, const lv_area_t * mask)
*/
static void lv_chart_draw_vertical_lines(lv_obj_t * chart, const lv_area_t * mask)
{
lv_chart_ext_t * ext = lv_obj_get_ext_attr(chart);
lv_coord_t w = lv_obj_get_width(chart);
/*Vertical lines works only if the width == point count. Else use the normal line type*/
if(ext->point_cnt != w) {
lv_chart_draw_lines(chart, mask);
return;
}
uint16_t i;
lv_point_t p1;
lv_point_t p2;
lv_coord_t w = lv_obj_get_width(chart);
lv_coord_t h = lv_obj_get_height(chart);
lv_coord_t x_ofs = chart->coords.x1;
lv_coord_t y_ofs = chart->coords.y1;
@ -789,11 +795,9 @@ static void lv_chart_draw_vertical_lines(lv_obj_t * chart, const lv_area_t * mas
p2.x = 0 + x_ofs;
y_tmp = (int32_t)((int32_t) ser->points[0] - ext->ymin) * h;
y_tmp = y_tmp / (ext->ymax - ext->ymin);
p1.y = LV_COORD_MIN;
p2.y = h - y_tmp + y_ofs;
p1.y = p2.y;
if(ext->point_cnt == w)
{
for(i = 0; i < ext->point_cnt; i++)
{
@ -806,31 +810,14 @@ static void lv_chart_draw_vertical_lines(lv_obj_t * chart, const lv_area_t * mas
p2.x++;
}
if(ser->points[i] != LV_CHART_POINT_DEF) {
lv_draw_line(&p1, &p2, mask, &style, opa_scale);
}
p2.x = ((w * i) / (ext->point_cnt - 1)) + x_ofs;
p1.x = p2.x;
p1.y = p2.y;
}
}
else
{
for(i = 1; i < ext->point_cnt; i ++) {
p1.x = p2.x;
p1.y = p2.y;
p2.x = ((w * i) / (ext->point_cnt - 1)) + x_ofs;
y_tmp = (int32_t)((int32_t) ser->points[i] - ext->ymin) * h;
y_tmp = y_tmp / (ext->ymax - ext->ymin);
p2.y = h - y_tmp + y_ofs;
if(ser->points[i - 1] >= 0 && ser->points[i] >= 0)
{
lv_draw_line(&p1, &p2, mask, &style, opa_scale);
}
}
}
}
}
#endif

8
lv_objx/lv_chart.h
View File

@ -62,10 +62,10 @@ typedef struct
/*Chart types*/
enum
{
LV_CHART_TYPE_LINE = 0x01,
LV_CHART_TYPE_COLUMN = 0x02,
LV_CHART_TYPE_POINT = 0x04,
LV_CHART_TYPE_VERTICAL_LINE = 0x08,
LV_CHART_TYPE_LINE = 0x01, /*Connect the points with lines*/
LV_CHART_TYPE_COLUMN = 0x02, /*Draw columns*/
LV_CHART_TYPE_POINT = 0x04, /*Draw circles on the points*/
LV_CHART_TYPE_VERTICAL_LINE = 0x08, /*Draw vertical lines on points (useful when chart width == point count)*/
};
typedef uint8_t lv_chart_type_t;