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fix(canvas): lv_canvas_transform negative offset_y parameter (#5846)

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This commit is contained in:
liamHowatt
2024-03-13 07:15:55 -04:00
committed by GitHub
parent 31126be578
commit 32966352ad
1 changed files with 9 additions and 11 deletions
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20
src/widgets/lv_canvas.c
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@@ -189,20 +189,18 @@ void lv_canvas_transform(lv_obj_t * obj, lv_img_dsc_t * src_img, int16_t angle,
lv_color_t * cbuf = lv_mem_alloc(dest_img->header.w * sizeof(lv_color_t));
lv_opa_t * abuf = lv_mem_alloc(dest_img->header.w * sizeof(lv_opa_t));
for(y = 0; y < dest_img->header.h; y++) {
if(y + offset_y >= 0) {
lv_draw_sw_transform(NULL, &dest_area, src_img->data, src_img->header.w, src_img->header.h, src_img->header.w,
&draw_dsc, canvas->dsc.header.cf, cbuf, abuf);
lv_draw_sw_transform(NULL, &dest_area, src_img->data, src_img->header.w, src_img->header.h, src_img->header.w,
&draw_dsc, canvas->dsc.header.cf, cbuf, abuf);
for(x = 0; x < dest_img->header.w; x++) {
if(abuf[x]) {
lv_img_buf_set_px_color(dest_img, x, y, cbuf[x]);
lv_img_buf_set_px_alpha(dest_img, x, y, abuf[x]);
}
for(x = 0; x < dest_img->header.w; x++) {
if(abuf[x]) {
lv_img_buf_set_px_color(dest_img, x, y, cbuf[x]);
lv_img_buf_set_px_alpha(dest_img, x, y, abuf[x]);
}
dest_area.y1++;
dest_area.y2++;
}
dest_area.y1++;
dest_area.y2++;
}
lv_mem_free(cbuf);
lv_mem_free(abuf);