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add lv_canvas_set_palette()

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This commit is contained in:
Gabor Kiss-Vamosi 2019-06-14 07:17:02 +02:00
parent 71f00017af
commit 89fae4458e
4 changed files with 44 additions and 14 deletions
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22
src/lv_draw/lv_draw_img.c
View File

@ -299,27 +299,27 @@ void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_
/**
* Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param dsc pointer to an image descriptor
* @param color_id the palette color to set:
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param color the color to set
* @param c the color to set
*/
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, int color_id, lv_color_t color)
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c)
{
if((dsc->header.cf == LV_IMG_CF_ALPHA_1BIT && color_id > 1) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT && color_id > 3) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT && color_id > 15) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT && color_id > 255)) {
LV_LOG_WARN("lv_img_buf_set_px_alpha: invalid 'color_id'");
if((dsc->header.cf == LV_IMG_CF_ALPHA_1BIT && id > 1) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT && id > 3) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT && id > 15) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT)) {
LV_LOG_WARN("lv_img_buf_set_px_alpha: invalid 'id'");
return;
}
lv_color32_t c32;
c32.full = lv_color_to32(color);
uint32_t * buf = (uint32_t *)dsc->data;
buf[color_id] = c32.full;
c32.full = lv_color_to32(c);
uint8_t * buf = (uint8_t *)dsc->data;
memcpy(&buf[id * sizeof(c32)], &c32, sizeof(c32));
}
/**

6
src/lv_draw/lv_draw_img.h
View File

@ -90,14 +90,14 @@ void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_
/**
* Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param dsc pointer to an image descriptor
* @param color_id the palette color to set:
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param color the color to set
* @param c the color to set
*/
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, int color_id, lv_color_t color);
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c);
/**
* Get the pixel size of a color format in bits

18
src/lv_objx/lv_canvas.c
View File

@ -137,6 +137,24 @@ void lv_canvas_set_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t
lv_obj_invalidate(canvas);
}
/**
* Set the palette color of a canvas with index format. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param canvas pointer to canvas object
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param c the color to set
*/
void lv_canvas_set_palette(lv_obj_t * canvas, uint8_t id, lv_color_t c)
{
lv_canvas_ext_t * ext = lv_obj_get_ext_attr(canvas);
lv_img_buf_set_palette(&ext->dsc, id, c);
lv_obj_invalidate(canvas);
}
/**
* Set a style of a canvas.
* @param canvas pointer to canvas object

12
src/lv_objx/lv_canvas.h
View File

@ -85,6 +85,18 @@ void lv_canvas_set_buffer(lv_obj_t * canvas, void * buf, lv_coord_t w, lv_coord_
*/
void lv_canvas_set_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t c);
/**
* Set the palette color of a canvas with index format. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param canvas pointer to canvas object
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param c the color to set
*/
void lv_canvas_set_palette(lv_obj_t * canvas, uint8_t id, lv_color_t c);
/**
* Set a style of a canvas.
* @param canvas pointer to canvas object