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Spacing and line wrap

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This commit is contained in:
whowechina 2024-05-30 19:46:33 +08:00
parent 34ed6efbbd
commit 2e4cfccd3a
2 changed files with 35 additions and 13 deletions
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45
firmware/src/st7789.c
View File

@ -353,27 +353,48 @@ void st7789_char(int x, int y, char c, const lv_font_t *font, uint16_t color)
}
}
static uint16_t text_width(const char *text, const lv_font_t *font, uint16_t spacing)
static uint16_t spacing_x = 1, spacing_y = 1;
void st7789_spacing(uint16_t dx, uint16_t dy)
{
spacing_x = dx;
spacing_y = dy;
}
static uint16_t text_width(const char *text, const lv_font_t *font)
{
uint16_t width = 0;
for (; *text; text++) {
width += (font->dsc[*text - font->range_start].adv_w >> 4) + spacing;
for (; *text && (*text != '\n'); text++) {
if (*text - font->range_start < font->range_length) {
width += (font->dsc[*text - font->range_start].adv_w >> 4) + spacing_x;
}
}
return width;
}
void st7789_text(int x, int y, const char *text,
const lv_font_t *font, uint16_t spacing, uint16_t color, alignment_t align)
const lv_font_t *font, uint16_t color, alignment_t align)
{
int width = text_width(text, font, spacing);
if (align == ALIGN_CENTER) {
x -= width / 2;
} else if (align == ALIGN_RIGHT) {
x -= width;
}
bool newline = true;
int pos_x = x;
for (; *text; text++) {
st7789_char(x, y, *text, font, color);
x += (font->dsc[*text - font->range_start].adv_w >> 4) + spacing;
if (*text == '\n') {
newline = true;
pos_x = x;;
y += font->line_height + spacing_y;
continue;
}
if (newline) {
int width = text_width(text, font);
if (align == ALIGN_CENTER) {
pos_x -= width / 2;
} else if (align == ALIGN_RIGHT) {
pos_x -= width;
}
newline = false;
}
st7789_char(pos_x, y, *text, font, color);
pos_x += (font->dsc[*text - font->range_start].adv_w >> 4) + spacing_x;
}
}

3
firmware/src/st7789.h
View File

@ -49,5 +49,6 @@ typedef enum {
ALIGN_RIGHT
} alignment_t;
void st7789_spacing(uint16_t dx, uint16_t dy);
void st7789_text(int x, int y, const char *text, const lv_font_t *font,
uint16_t spacing, uint16_t color, alignment_t align);
uint16_t color, alignment_t align);