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lvgl/lv_draw/lv_draw_vbasic.c
Gabor Kiss-Vamosi 8bd9ab7b84 LV_GROUP rename
2017-12-07 10:38:25 +01:00

583 lines
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/**
* @file lv_vdraw.c
*
*/
#include "../../lv_conf.h"
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_misc/lv_area.h"
#include "../lv_misc/lv_font.h"
#include "../lv_misc/lv_color.h"
#if LV_VDB_SIZE != 0
#include <stddef.h>
#include "../lv_core/lv_vdb.h"
/*********************
* INCLUDES
*********************/
/*********************
* DEFINES
*********************/
#define VFILL_HW_ACC_SIZE_LIMIT 50 /*Always fill < 50 px with 'sw_color_fill' because of the hw. init overhead*/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void sw_mem_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
static void sw_color_fill(lv_area_t * mem_area, lv_color_t * mem, const lv_area_t * fill_area, lv_color_t color, lv_opa_t opa);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Put a pixel in the Virtual Display Buffer
* @param x pixel x coordinate
* @param y pixel y coordinate
* @param mask_p fill only on this mask (truncated to VDB area)
* @param color pixel color
* @param opa opacity of the area (0..255)
*/
void lv_vpx(lv_coord_t x, lv_coord_t y, const lv_area_t * mask_p, lv_color_t color, lv_opa_t opa)
{
lv_vdb_t * vdb_p = lv_vdb_get();
/*Pixel out of the mask*/
if(x < mask_p->x1 || x > mask_p->x2 ||
y < mask_p->y1 || y > mask_p->y2) {
return;
}
uint32_t vdb_width = lv_area_get_width(&vdb_p->area);
/*Make the coordinates relative to VDB*/
x-=vdb_p->area.x1;
y-=vdb_p->area.y1;
lv_color_t * vdb_px_p = vdb_p->buf + y * vdb_width + x;
if(opa == LV_OPA_COVER) {
*vdb_px_p = color;
}
else {
*vdb_px_p = lv_color_mix(color,*vdb_px_p, opa);
}
}
/**
* Fill an area in the Virtual Display Buffer
* @param cords_p coordinates of the area to fill
* @param mask_p fill only o this mask (truncated to VDB area)
* @param color fill color
* @param opa opacity of the area (0..255)
*/
void lv_vfill(const lv_area_t * cords_p, const lv_area_t * mask_p,
lv_color_t color, lv_opa_t opa)
{
static lv_color_t color_array_tmp[LV_VER_RES]; /*Used by 'sw_color_fill'*/
static lv_coord_t last_width = -1;
lv_area_t res_a;
bool union_ok;
lv_vdb_t * vdb_p = lv_vdb_get();
/*Get the union of cord and mask*/
/* The mask is already truncated to the vdb size
* in 'lv_refr_area_with_vdb' function */
union_ok = lv_area_union(&res_a, cords_p, mask_p);
/*If there are common part of the three area then draw to the vdb*/
if(union_ok == false) return;
lv_area_t vdb_rel_a; /*Stores relative coordinates on vdb*/
vdb_rel_a.x1 = res_a.x1 - vdb_p->area.x1;
vdb_rel_a.y1 = res_a.y1 - vdb_p->area.y1;
vdb_rel_a.x2 = res_a.x2 - vdb_p->area.x1;
vdb_rel_a.y2 = res_a.y2 - vdb_p->area.y1;
lv_color_t * vdb_buf_tmp = vdb_p->buf;
uint32_t vdb_width = lv_area_get_width(&vdb_p->area);
/*Move the vdb_tmp to the first row*/
vdb_buf_tmp += vdb_width * vdb_rel_a.y1;
lv_coord_t w = lv_area_get_width(&vdb_rel_a);
/*Don't use hw. acc. for every small fill (because of the init overhead)*/
if(w < VFILL_HW_ACC_SIZE_LIMIT) {
sw_color_fill(&vdb_p->area, vdb_buf_tmp, &vdb_rel_a, color, opa);
}
/*Not opaque fill*/
else if(opa == LV_OPA_COVER) {
/*Use hw fill if present*/
if(lv_disp_is_mem_fill_supported()) {
lv_coord_t row;
for(row = vdb_rel_a.y1;row <= vdb_rel_a.y2; row++) {
lv_disp_mem_fill(&vdb_buf_tmp[vdb_rel_a.x1], w, color);
vdb_buf_tmp += vdb_width;
}
}
/*Use hw blend if present and the area is not too small*/
else if(lv_area_get_height(&vdb_rel_a) > VFILL_HW_ACC_SIZE_LIMIT &&
lv_disp_is_mem_blend_supported())
{
if(color_array_tmp[0].full != color.full || last_width != w) {
uint16_t i;
for(i = 0; i < w; i++) {
color_array_tmp[i].full = color.full;
}
last_width = w;
}
lv_coord_t row;
for(row = vdb_rel_a.y1;row <= vdb_rel_a.y2; row++) {
lv_disp_mem_blend(&vdb_buf_tmp[vdb_rel_a.x1], color_array_tmp, w, opa);
vdb_buf_tmp += vdb_width;
}
}
/*Else use sw fill if no better option*/
else {
sw_color_fill(&vdb_p->area, vdb_buf_tmp, &vdb_rel_a, color, opa);
}
}
/*Fill with opacity*/
else {
/*Use hw blend if present*/
if(lv_disp_is_mem_blend_supported()) {
if(color_array_tmp[0].full != color.full || last_width != w) {
uint16_t i;
for(i = 0; i < w; i++) {
color_array_tmp[i].full = color.full;
}
last_width = w;
}
lv_coord_t row;
for(row = vdb_rel_a.y1;row <= vdb_rel_a.y2; row++) {
lv_disp_mem_blend(&vdb_buf_tmp[vdb_rel_a.x1], color_array_tmp, w, opa);
vdb_buf_tmp += vdb_width;
}
}
/*Use sw fill with opa if no better option*/
else {
sw_color_fill(&vdb_p->area, vdb_buf_tmp, &vdb_rel_a, color, opa);
}
}
}
/**
* Draw a letter in the Virtual Display Buffer
* @param pos_p left-top coordinate of the latter
* @param mask_p the letter will be drawn only on this area (truncated to VDB area)
* @param font_p pointer to font
* @param letter a letter to draw
* @param color color of letter
* @param opa opacity of letter (0..255)
*/
void lv_vletter(const lv_point_t * pos_p, const lv_area_t * mask_p,
const lv_font_t * font_p, uint32_t letter,
lv_color_t color, lv_opa_t opa)
{
if(font_p == NULL) return;
uint8_t letter_w = lv_font_get_width(font_p, letter);
uint8_t letter_h = lv_font_get_height(font_p);
const uint8_t * map_p = lv_font_get_bitmap(font_p, letter);
if(map_p == NULL) return;
/*If the letter is completely out of mask don't draw it */
if(pos_p->x + letter_w < mask_p->x1 || pos_p->x > mask_p->x2 ||
pos_p->y + letter_h < mask_p->y1 || pos_p->y > mask_p->y2) return;
lv_vdb_t * vdb_p = lv_vdb_get();
lv_coord_t vdb_width = lv_area_get_width(&vdb_p->area);
lv_color_t * vdb_buf_tmp = vdb_p->buf;
lv_coord_t col, row;
uint8_t col_bit;
uint8_t col_byte_cnt;
uint8_t width_byte = letter_w >> 3; /*Width in bytes (e.g. w = 11 -> 2 bytes wide)*/
if(letter_w & 0x7) width_byte++;
/* Calculate the col/row start/end on the map
* If font anti alaiassing is enabled use the reduced letter sizes*/
lv_coord_t col_start = pos_p->x > mask_p->x1 ? 0 : mask_p->x1 - pos_p->x;
lv_coord_t col_end = pos_p->x + (letter_w >> LV_FONT_ANTIALIAS) < mask_p->x2 ? (letter_w >> LV_FONT_ANTIALIAS) : mask_p->x2 - pos_p->x + 1;
lv_coord_t row_start = pos_p->y > mask_p->y1 ? 0 : mask_p->y1 - pos_p->y;
lv_coord_t row_end = pos_p->y + (letter_h >> LV_FONT_ANTIALIAS) < mask_p->y2 ? (letter_h >> LV_FONT_ANTIALIAS) : mask_p->y2 - pos_p->y + 1;
/*Set a pointer on VDB to the first pixel of the letter*/
vdb_buf_tmp += ((pos_p->y - vdb_p->area.y1) * vdb_width)
+ pos_p->x - vdb_p->area.x1;
/*If the letter is partially out of mask the move there on VDB*/
vdb_buf_tmp += (row_start * vdb_width) + col_start;
/*Move on the map too*/
map_p += ((row_start << LV_FONT_ANTIALIAS) * width_byte) + ((col_start << LV_FONT_ANTIALIAS) >> 3);
#if LV_FONT_ANTIALIAS != 0
lv_opa_t opa_tmp = opa;
if(opa_tmp != LV_OPA_COVER) opa_tmp = opa_tmp >> 2; /*Opacity per pixel (used when sum the pixels)*/
const uint8_t * map1_p = map_p;
const uint8_t * map2_p = map_p + width_byte;
uint8_t px_cnt;
for(row = row_start; row < row_end; row ++) {
col_byte_cnt = 0;
col_bit = 7 - ((col_start << LV_FONT_ANTIALIAS) % 8);
for(col = col_start; col < col_end; col ++) {
px_cnt = 0;
if((*map1_p & (1 << col_bit)) != 0) px_cnt++;
if((*map2_p & (1 << col_bit)) != 0) px_cnt++;
if(col_bit != 0) col_bit --;
else {
col_bit = 7;
col_byte_cnt ++;
map1_p ++;
map2_p ++;
}
if((*map1_p & (1 << col_bit)) != 0) px_cnt++;
if((*map2_p & (1 << col_bit)) != 0) px_cnt++;
if(col_bit != 0) col_bit --;
else {
col_bit = 7;
col_byte_cnt ++;
map1_p ++;
map2_p ++;
}
if(px_cnt != 0) {
if(opa == LV_OPA_COVER) *vdb_buf_tmp = lv_color_mix(color, *vdb_buf_tmp, 63*px_cnt);
else *vdb_buf_tmp = lv_color_mix(color, *vdb_buf_tmp, opa_tmp * px_cnt);
}
vdb_buf_tmp++;
}
map1_p += width_byte;
map2_p += width_byte;
map1_p += width_byte - col_byte_cnt;
map2_p += width_byte - col_byte_cnt;
vdb_buf_tmp += vdb_width - ((col_end) - (col_start)); /*Next row in VDB*/
}
#else
for(row = row_start; row < row_end; row ++) {
col_byte_cnt = 0;
col_bit = 7 - (col_start % 8);
for(col = col_start; col < col_end; col ++) {
if((*map_p & (1 << col_bit)) != 0) {
if(opa == LV_OPA_COVER) *vdb_buf_tmp = color;
else *vdb_buf_tmp = lv_color_mix(color, *vdb_buf_tmp, opa);
}
vdb_buf_tmp++;
if(col_bit != 0) col_bit --;
else {
col_bit = 7;
col_byte_cnt ++;
map_p ++;
}
}
map_p += width_byte - col_byte_cnt;
vdb_buf_tmp += vdb_width - (col_end - col_start); /*Next row in VDB*/
}
#endif
}
/**
* Draw a color map to the display
* @param cords_p coordinates the color map
* @param mask_p the map will drawn only on this area (truncated to VDB area)
* @param map_p pointer to a lv_color_t array
* @param opa opacity of the map (ignored, only for compatibility with lv_vmap)
* @param transp true: enable transparency of LV_IMG_LV_COLOR_TRANSP color pixels
* @param upscale true: upscale to double size
* @param recolor mix the pixels with this color
* @param recolor_opa the intense of recoloring
*/
void lv_vmap(const lv_area_t * cords_p, const lv_area_t * mask_p,
const lv_color_t * map_p, lv_opa_t opa, bool transp, bool upscale,
lv_color_t recolor, lv_opa_t recolor_opa)
{
lv_area_t masked_a;
bool union_ok;
lv_vdb_t * vdb_p = lv_vdb_get();
/*Get the union of map size and mask*/
/* The mask is already truncated to the vdb size
* in 'lv_refr_area_with_vdb' function */
union_ok = lv_area_union(&masked_a, cords_p, mask_p);
/*If there are common part of the three area then draw to the vdb*/
if(union_ok == false) return;
uint8_t ds_shift = 0;
if(upscale != false) ds_shift = 1;
/*If the map starts OUT of the masked area then calc. the first pixel*/
lv_coord_t map_width = lv_area_get_width(cords_p) >> ds_shift;
if(cords_p->y1 < masked_a.y1) {
map_p += (uint32_t) map_width * ((masked_a.y1 - cords_p->y1) >> ds_shift);
}
if(cords_p->x1 < masked_a.x1) {
map_p += (masked_a.x1 - cords_p->x1) >> ds_shift;
}
/*Stores coordinates relative to the act vdb*/
masked_a.x1 = masked_a.x1 - vdb_p->area.x1;
masked_a.y1 = masked_a.y1 - vdb_p->area.y1;
masked_a.x2 = masked_a.x2 - vdb_p->area.x1;
masked_a.y2 = masked_a.y2 - vdb_p->area.y1;
lv_coord_t vdb_width = lv_area_get_width(&vdb_p->area);
lv_color_t * vdb_buf_tmp = vdb_p->buf;
vdb_buf_tmp += (uint32_t) vdb_width * masked_a.y1; /*Move to the first row*/
map_p -= (masked_a.x1 >> ds_shift); /*Move back. It will be easier to index 'map_p' later*/
/*No upscalse*/
if(upscale == false) {
if(transp == false) { /*Simply copy the pixels to the VDB*/
lv_coord_t row;
lv_coord_t map_useful_w = lv_area_get_width(&masked_a);
for(row = masked_a.y1; row <= masked_a.y2; row++) {
if(lv_disp_is_mem_blend_supported() == false) {
sw_mem_blend(&vdb_buf_tmp[masked_a.x1], &map_p[masked_a.x1], map_useful_w, opa);
} else {
lv_disp_mem_blend(&vdb_buf_tmp[masked_a.x1], &map_p[masked_a.x1], map_useful_w, opa);
}
map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width; /*Next row on the VDB*/
}
/*To recolor draw simply a rectangle above the image*/
if(recolor_opa != LV_OPA_TRANSP) {
lv_vfill(cords_p, mask_p, recolor, recolor_opa);
}
} else { /*transp == true: Check all pixels */
lv_coord_t row;
lv_coord_t col;
lv_color_t transp_color = LV_COLOR_TRANSP;
if(recolor_opa == LV_OPA_TRANSP) {/*No recolor*/
if(opa == LV_OPA_COVER) { /*no opa */
for(row = masked_a.y1; row <= masked_a.y2; row++) {
for(col = masked_a.x1; col <= masked_a.x2; col ++) {
if(map_p[col].full != transp_color.full) {
vdb_buf_tmp[col] = map_p[col];
}
}
map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width; /*Next row on the VDB*/
}
} else {
for(row = masked_a.y1; row <= masked_a.y2; row++) {
for(col = masked_a.x1; col <= masked_a.x2; col ++) {
if(map_p[col].full != transp_color.full) {
vdb_buf_tmp[col] = lv_color_mix( map_p[col], vdb_buf_tmp[col], opa);
}
}
map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width; /*Next row on the VDB*/
}
}
} else { /*Recolor needed*/
lv_color_t lv_color_tmp;
if(opa == LV_OPA_COVER) { /*no opa */
for(row = masked_a.y1; row <= masked_a.y2; row++) {
for(col = masked_a.x1; col <= masked_a.x2; col ++) {
if(map_p[col].full != transp_color.full) {
lv_color_tmp = lv_color_mix(recolor, map_p[col], recolor_opa);
vdb_buf_tmp[col] = lv_color_tmp;
}
}
map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width; /*Next row on the VDB*/
}
} else {
for(row = masked_a.y1; row <= masked_a.y2; row++) {
for(col = masked_a.x1; col <= masked_a.x2; col ++) {
if(map_p[col].full != transp_color.full) {
lv_color_tmp = lv_color_mix(recolor, map_p[col], recolor_opa);
vdb_buf_tmp[col] = lv_color_mix(lv_color_tmp, vdb_buf_tmp[col], opa);
}
}
map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width; /*Next row on the VDB*/
}
}
}
}
}
/*Upscalse*/
else {
lv_coord_t row;
lv_coord_t col;
lv_color_t transp_color = LV_COLOR_TRANSP;
lv_color_t lv_color_tmp;
lv_color_t prev_color = LV_COLOR_BLACK;
lv_coord_t map_col;
/*The most simple case (but upscale): 0 opacity, no recolor, no transp. pixels*/
if(transp == false && opa == LV_OPA_COVER && recolor_opa == LV_OPA_TRANSP) {
lv_coord_t map_col_start = masked_a.x1 >> 1;
lv_coord_t map_col_end = masked_a.x2 >> 1;
lv_coord_t vdb_col; /*Col. in this row*/
lv_coord_t vdb_col2; /*Col. in next row*/
for(row = masked_a.y1; row <= masked_a.y2; row += 2) {
map_col_start = masked_a.x1 >> 1;
map_col_end = masked_a.x2 >> 1;
vdb_col = masked_a.x1;
vdb_col2 = masked_a.x1 + vdb_width;
for(map_col = map_col_start; map_col <= map_col_end; map_col ++, vdb_col += 2, vdb_col2 += 2) {
vdb_buf_tmp[vdb_col].full = map_p[map_col].full;
vdb_buf_tmp[vdb_col + 1].full = map_p[map_col].full;
vdb_buf_tmp[vdb_col2].full = map_p[map_col].full;
vdb_buf_tmp[vdb_col2 + 1].full = map_p[map_col].full;
}
map_p += map_width;
vdb_buf_tmp += 2 * vdb_width ; /*+ 2 row on the VDB (2 rows are filled because of the upscale)*/
}
}
/*Handle other cases*/
else {
lv_color_tmp = lv_color_mix(recolor, prev_color, recolor_opa);
for(row = masked_a.y1; row <= masked_a.y2; row++) {
for(col = masked_a.x1; col <= masked_a.x2; col ++) {
map_col = col >> 1;
/*Handle recoloring*/
if(recolor_opa == LV_OPA_TRANSP) {
lv_color_tmp.full = map_p[map_col].full;
} else {
if(map_p[map_col].full != prev_color.full) {
prev_color.full = map_p[map_col].full;
lv_color_tmp = lv_color_mix(recolor, prev_color, recolor_opa);
}
}
/*Put the NOT transparent pixels*/
if(transp == false || map_p[map_col].full != transp_color.full) {
/*Handle opacity*/
if(opa == LV_OPA_COVER) {
vdb_buf_tmp[col] = lv_color_tmp;
} else {
vdb_buf_tmp[col] = lv_color_mix( lv_color_tmp, vdb_buf_tmp[col], opa);
}
}
}
if((row & 0x1) != 0) map_p += map_width; /*Next row on the map*/
vdb_buf_tmp += vdb_width ; /*Next row on the VDB*/
}
}
}
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Blend pixels to destination memory using opacity
* @param dest a memory address. Copy 'src' here.
* @param src pointer to pixel map. Copy it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
static void sw_mem_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa)
{
if(opa == LV_OPA_COVER) {
memcpy(dest, src, length * sizeof(lv_color_t));
} else {
uint32_t col;
for(col = 0; col < length; col++) {
dest[col] = lv_color_mix(src[col], dest[col], opa);
}
}
}
/**
*
* @param mem_area coordinates of 'mem' memory area
* @param mem a memory address. Considered to a rectangular window according to 'mem_area'
* @param fill_area coordinates of an area to fill. Relative to 'mem_area'.
* @param color fill color
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
static void sw_color_fill(lv_area_t * mem_area, lv_color_t * mem, const lv_area_t * fill_area, lv_color_t color, lv_opa_t opa)
{
/*Set all row in vdb to the given color*/
lv_coord_t row;
lv_coord_t col;
lv_coord_t mem_width = lv_area_get_width(mem_area);
/*Run simpler function without opacity*/
if(opa == LV_OPA_COVER) {
/*Fill the first row with 'color'*/
for(col = fill_area->x1; col <= fill_area->x2; col++) {
mem[col] = color;
}
/*Copy the first row to all other rows*/
lv_color_t * mem_first = &mem[fill_area->x1];
lv_coord_t copy_size = (fill_area->x2 - fill_area->x1 + 1) * sizeof(lv_color_t);
mem += mem_width;
for(row = fill_area->y1 + 1; row <= fill_area->y2; row++) {
memcpy(&mem[fill_area->x1], mem_first, copy_size);
mem += mem_width;
}
}
/*Calculate with alpha too*/
else {
lv_color_t bg_tmp = LV_COLOR_BLACK;
lv_color_t opa_tmp = lv_color_mix(color, bg_tmp, opa);
for(row = fill_area->y1; row <= fill_area->y2; row++) {
for(col = fill_area->x1; col <= fill_area->x2; col++) {
/*If the bg color changed recalculate the result color*/
if(mem[col].full != bg_tmp.full) {
bg_tmp = mem[col];
opa_tmp = lv_color_mix(color, bg_tmp, opa);
}
mem[col] = opa_tmp;
}
mem += mem_width;
}
}
}
#endif
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