/**
* Handle the drawing related tasks of the pages
* @param page 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_page_design(lv_obj_t * page, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_design(page, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN) {
/*Draw without border*/
lv_style_t *style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_coord_t border_width_tmp = style->body.border.width;
style->body.border.width = 0;
lv_draw_rect(&page->coords, mask, style);
style->body.border.width = border_width_tmp;
} else if(mode == LV_DESIGN_DRAW_POST) { /*Draw the scroll bars finally*/
/*Draw only a border*/
lv_style_t *style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_coord_t shadow_width_tmp = style->body.shadow.width;
uint8_t empty_tmp = style->body.empty;
style->body.shadow.width = 0;
style->body.empty = 1;
lv_draw_rect(&page->coords, mask, style);
style->body.shadow.width = shadow_width_tmp;
style->body.empty = empty_tmp;
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
/*Draw the scrollbars*/
lv_area_t sb_area;
if(ext->sb.hor_draw) {
/*Convert the relative coordinates to absolute*/
lv_area_copy(&sb_area, &ext->sb.hor_area);
sb_area.x1 += page->coords.x1;
sb_area.y1 += page->coords.y1;
sb_area.x2 += page->coords.x1;
sb_area.y2 += page->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style);
}
if(ext->sb.ver_draw) {
/*Convert the relative coordinates to absolute*/
lv_area_copy(&sb_area, &ext->sb.ver_area);
sb_area.x1 += page->coords.x1;
sb_area.y1 += page->coords.y1;
sb_area.x2 += page->coords.x1;
sb_area.y2 += page->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style);
}
}
return true;
}
/**
* Draw a rectangle which has gradient on its top and bottom
* @param roller pointer to a roller object
* @param mask pointer to the current mask (from the design function)
*/
static void draw_bg(lv_obj_t *roller, const lv_area_t *mask)
{
lv_style_t *style = lv_roller_get_style(roller, LV_ROLLER_STYLE_BG);
lv_area_t half_mask;
lv_area_t half_roller;
lv_coord_t h = lv_obj_get_height(roller);
bool union_ok;
lv_area_copy(&half_roller, &roller->coords);
half_roller.x1 -= roller->ext_size; /*Add ext size too (e.g. because of shadow draw) */
half_roller.x2 += roller->ext_size;
half_roller.y1 -= roller->ext_size;
half_roller.y2 = roller->coords.y1 + h / 2;
union_ok = lv_area_union(&half_mask, &half_roller, mask);
half_roller.x1 += roller->ext_size; /*Revert ext. size adding*/
half_roller.x2 -= roller->ext_size;
half_roller.y1 += roller->ext_size;
half_roller.y2 += style->body.radius;
if(union_ok) {
lv_draw_rect(&half_roller, &half_mask, style);
}
half_roller.x1 -= roller->ext_size; /*Add ext size too (e.g. because of shadow draw) */
half_roller.x2 += roller->ext_size;
half_roller.y2 = roller->coords.y2 + roller->ext_size;
half_roller.y1 = roller->coords.y1 + h / 2;
if((h & 0x1) == 0) half_roller.y1++; /*With even height the pixels in the middle would be drawn twice*/
union_ok = lv_area_union(&half_mask, &half_roller, mask);
half_roller.x1 += roller->ext_size; /*Revert ext. size adding*/
half_roller.x2 -= roller->ext_size;
half_roller.y2 -= roller->ext_size;
half_roller.y1 -= style->body.radius;
if(union_ok){
lv_color_t main_tmp = style->body.main_color;
lv_color_t grad_tmp = style->body.grad_color;
style->body.main_color = grad_tmp;
style->body.grad_color = main_tmp;
lv_draw_rect(&half_roller, &half_mask, style);
style->body.main_color = main_tmp;
style->body.grad_color = grad_tmp;
}
}
/**
* Handle the drawing related tasks of the labels
* @param label pointer to a label 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_label_design(lv_obj_t * label, const lv_area_t * mask, lv_design_mode_t mode)
{
/* A label never covers an area */
if(mode == LV_DESIGN_COVER_CHK) return false;
else if(mode == LV_DESIGN_DRAW_MAIN) {
lv_area_t coords;
lv_style_t * style = lv_obj_get_style(label);
lv_obj_get_coords(label, &coords);
#if USE_LV_GROUP
lv_group_t * g = lv_obj_get_group(label);
if(lv_group_get_focused(g) == label) {
lv_draw_rect(&coords, mask, style);
}
#endif
lv_label_ext_t * ext = lv_obj_get_ext_attr(label);
if(ext->body_draw) {
lv_area_t bg;
lv_obj_get_coords(label, &bg);
bg.x1 -= style->body.padding.hor;
bg.x2 += style->body.padding.hor;
bg.y1 -= style->body.padding.ver;
bg.y2 += style->body.padding.ver;
lv_draw_rect(&bg, mask, style);
}
/*TEST: draw a background for the label*/
// lv_draw_rect(&label->coords, mask, &lv_style_plain_color);
lv_txt_flag_t flag = LV_TXT_FLAG_NONE;
if(ext->recolor != 0) flag |= LV_TXT_FLAG_RECOLOR;
if(ext->expand != 0) flag |= LV_TXT_FLAG_EXPAND;
if(ext->no_break != 0) flag |= LV_TXT_FLAG_NO_BREAK;
if(ext->align == LV_LABEL_ALIGN_CENTER) flag |= LV_TXT_FLAG_CENTER;
lv_draw_label(&coords, mask, style, ext->text, flag, &ext->offset);
}
return true;
}
/**
* Handle the drawing related tasks of the rollers
* @param roller 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_roller_design(lv_obj_t * roller, 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) {
draw_bg(roller, mask);
lv_style_t *style = lv_roller_get_style(roller, LV_ROLLER_STYLE_BG);
const lv_font_t * font = style->text.font;
lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller);
lv_coord_t font_h = lv_font_get_height_scale(font);
lv_area_t rect_area;
rect_area.y1 = roller->coords.y1 + lv_obj_get_height(roller) / 2 - font_h / 2 - style->text.line_space / 2;
rect_area.y2 = rect_area.y1 + font_h + style->text.line_space;
rect_area.x1 = roller->coords.x1;
rect_area.x2 = roller->coords.x2;
lv_draw_rect(&rect_area, mask, ext->ddlist.sel_style);
}
/*Post draw when the children are drawn*/
else if(mode == LV_DESIGN_DRAW_POST) {
lv_style_t *style = lv_roller_get_style(roller, LV_ROLLER_STYLE_BG);
lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller);
const lv_font_t * font = style->text.font;
lv_coord_t font_h = lv_font_get_height_scale(font);
/*Redraw the text on the selected area with a different color*/
lv_area_t rect_area;
rect_area.y1 = roller->coords.y1 + lv_obj_get_height(roller) / 2 - font_h / 2 - style->text.line_space / 2;
rect_area.y2 = rect_area.y1 + font_h + style->text.line_space;
rect_area.x1 = roller->coords.x1;
rect_area.x2 = roller->coords.x2;
lv_area_t mask_sel;
bool area_ok;
area_ok = lv_area_union(&mask_sel, mask, &rect_area);
if(area_ok) {
lv_style_t *sel_style = lv_roller_get_style(roller, LV_ROLLER_STYLE_SEL);
lv_style_t new_style;
lv_style_copy(&new_style, style);
new_style.text.color = sel_style->text.color;
new_style.text.opa = sel_style->text.opa;
lv_draw_label(&ext->ddlist.label->coords, &mask_sel, &new_style,
lv_label_get_text(ext->ddlist.label), LV_TXT_FLAG_CENTER, NULL);
}
}
return true;
}
/**
* Draw the needles of a gauge
* @param gauge pointer to gauge object
* @param mask mask of drawing
*/
static void lv_gauge_draw_needle(lv_obj_t * gauge, const lv_area_t * mask)
{
lv_style_t style_needle;
lv_gauge_ext_t * ext = lv_obj_get_ext_attr(gauge);
lv_style_t * style = lv_gauge_get_style(gauge);
lv_coord_t r = lv_obj_get_width(gauge) / 2 - style->body.padding.hor;
lv_coord_t x_ofs = lv_obj_get_width(gauge) / 2 + gauge->coords.x1;
lv_coord_t y_ofs = lv_obj_get_height(gauge) / 2 + gauge->coords.y1;
uint16_t angle = lv_lmeter_get_scale_angle(gauge);
int16_t angle_ofs = 90 + (360 - angle) / 2;
int16_t min = lv_gauge_get_min_value(gauge);
int16_t max = lv_gauge_get_max_value(gauge);
lv_point_t p_mid;
lv_point_t p_end;
uint8_t i;
lv_style_copy(&style_needle, style);
p_mid.x = x_ofs;
p_mid.y = y_ofs;
for(i = 0; i < ext->needle_count; i++) {
/*Calculate the end point of a needle*/
int16_t needle_angle = (ext->values[i] - min) * angle / (max - min) + angle_ofs;
p_end.y = (lv_trigo_sin(needle_angle) * r) / LV_TRIGO_SIN_MAX + y_ofs;
p_end.x = (lv_trigo_sin(needle_angle + 90) * r) / LV_TRIGO_SIN_MAX + x_ofs;
/*Draw the needle with the corresponding color*/
if(ext->needle_colors == NULL) style_needle.line.color = LV_GAUGE_DEF_NEEDLE_COLOR;
else style_needle.line.color = ext->needle_colors[i];
lv_draw_line(&p_mid, &p_end, mask, &style_needle);
}
/*Draw the needle middle area*/
lv_style_t style_neddle_mid;
lv_style_copy(&style_neddle_mid, &lv_style_plain);
style_neddle_mid.body.main_color = style->body.border.color;
style_neddle_mid.body.grad_color = style->body.border.color;
style_neddle_mid.body.radius = LV_RADIUS_CIRCLE;
lv_area_t nm_cord;
nm_cord.x1 = x_ofs - style->body.padding.ver;
nm_cord.y1 = y_ofs - style->body.padding.ver;
nm_cord.x2 = x_ofs + style->body.padding.ver;
nm_cord.y2 = y_ofs + style->body.padding.ver;
lv_draw_rect(&nm_cord, mask, &style_neddle_mid);
}
/**
* Handle the drawing related tasks of the drop down lists
* @param ddlist 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_ddlist_design(lv_obj_t * ddlist, 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 ancestor_design(ddlist, mask, mode);
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
ancestor_design(ddlist, mask, mode);
lv_ddlist_ext_t * ext = lv_obj_get_ext_attr(ddlist);
/*If the list is opened draw a rectangle under the selected item*/
if(ext->opened != 0) {
lv_style_t *style = lv_ddlist_get_style(ddlist, LV_DDLIST_STYLE_BG);
const lv_font_t * font = style->text.font;
lv_coord_t font_h = lv_font_get_height(font);
/*Draw the selected*/
lv_area_t rect_area;
rect_area.y1 = ext->label->coords.y1;
rect_area.y1 += ext->sel_opt_id * (font_h + style->text.line_space);
rect_area.y1 -= style->text.line_space / 2;
rect_area.y2 = rect_area.y1 + font_h + style->text.line_space;
rect_area.x1 = ddlist->coords.x1;
rect_area.x2 = ddlist->coords.x2;
lv_draw_rect(&rect_area, mask, ext->sel_style);
}
}
/*Post draw when the children are drawn*/
else if(mode == LV_DESIGN_DRAW_POST) {
ancestor_design(ddlist, mask, mode);
/*Redraw the text on the selected area with a different color*/
lv_ddlist_ext_t * ext = lv_obj_get_ext_attr(ddlist);
/*Redraw only in opened state*/
if(ext->opened == 0) return true;
lv_style_t *style = lv_ddlist_get_style(ddlist, LV_DDLIST_STYLE_BG);
const lv_font_t * font = style->text.font;
lv_coord_t font_h = lv_font_get_height(font);
lv_area_t area_sel;
area_sel.y1 = ext->label->coords.y1;
area_sel.y1 += ext->sel_opt_id * (font_h + style->text.line_space);
area_sel.y1 -= style->text.line_space / 2;
area_sel.y2 = area_sel.y1 + font_h + style->text.line_space;
area_sel.x1 = ddlist->coords.x1;
area_sel.x2 = ddlist->coords.x2;
lv_area_t mask_sel;
bool area_ok;
area_ok = lv_area_union(&mask_sel, mask, &area_sel);
if(area_ok) {
lv_style_t *sel_style = lv_ddlist_get_style(ddlist, LV_DDLIST_STYLE_SEL);
lv_style_t new_style;
lv_style_copy(&new_style, style);
new_style.text.color = sel_style->text.color;
new_style.text.opa = sel_style->text.opa;
lv_draw_label(&ext->label->coords, &mask_sel, &new_style,
lv_label_get_text(ext->label), LV_TXT_FLAG_NONE, NULL);
}
}
return true;
}
