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arch(draw): add parallel rendering architecture

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BREAKING CHANGE

This is a huge update which introduces parallel rendering. lv_conf.h needs to be updated too.
This commit is contained in:
Gabor Kiss-Vamosi
2023-07-05 13:05:19 +02:00
parent 08870996d1
commit f753265a79
637 changed files with 34425 additions and 35325 deletions
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6
examples/widgets/label/lv_example_label_4.c
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@@ -1,5 +1,6 @@
#include "../../lv_examples.h"
#if LV_USE_LABEL && LV_USE_CANVAS && LV_BUILD_EXAMPLES && LV_USE_DRAW_MASKS
//TODO
#if LV_USE_LABEL && LV_USE_CANVAS && LV_BUILD_EXAMPLES && LV_USE_DRAW_MASKS && 0
#define MASK_WIDTH 100
#define MASK_HEIGHT 45
@@ -44,7 +45,8 @@ void lv_example_label_4(void)
lv_draw_label_dsc_init(&label_dsc);
label_dsc.color = lv_color_white();
label_dsc.align = LV_TEXT_ALIGN_CENTER;
lv_canvas_draw_text(canvas, 5, 5, MASK_WIDTH, &label_dsc, "Text with gradient");
label_dsc.text = "Text with gradient";
lv_canvas_draw_text(canvas, 5, 5, MASK_WIDTH, &label_dsc);
/*The mask is reads the canvas is not required anymore*/
lv_obj_del(canvas);

64
examples/widgets/label/lv_example_label_4.py
View File

@@ -1,63 +1 @@
MASK_WIDTH = 100
MASK_HEIGHT = 45
def add_mask_event_cb(e,mask_map):
code = e.get_code()
obj = e.get_target_obj()
if code == lv.EVENT.COVER_CHECK :
e.set_cover_res(lv.COVER_RES.MASKED)
elif code == lv.EVENT.DRAW_MAIN_BEGIN:
m = lv.draw_mask_map_param_t()
obj_coords = lv.area_t()
obj.get_coords(obj_coords)
m.init(obj_coords, mask_map)
mask_id = lv.draw_mask_add(m,None)
elif code == lv.EVENT.DRAW_MAIN_END:
try:
m.free_param()
mask_id.remove_id()
except:
pass
#
# Draw label with gradient color
#
# Create the mask of a text by drawing it to a canvas
mask_map = bytearray(MASK_WIDTH * MASK_HEIGHT * 4)
# Create a "8 bit alpha" canvas and clear it
canvas = lv.canvas(lv.scr_act())
canvas.set_buffer(mask_map, MASK_WIDTH, MASK_HEIGHT, lv.COLOR_FORMAT.NATIVE)
canvas.fill_bg(lv.color_black(), lv.OPA.TRANSP)
# Draw a label to the canvas. The result "image" will be used as mask
label_dsc = lv.draw_label_dsc_t()
label_dsc.init()
label_dsc.color = lv.color_white()
label_dsc.align = lv.TEXT_ALIGN.CENTER
canvas.draw_text(5, 5, MASK_WIDTH, label_dsc, "Text with gradient")
# The mask is reads the canvas is not required anymore
canvas.delete()
# Convert the mask to A8
# This is just a work around and will be changed later
mask8 = bytearray(MASK_WIDTH * MASK_HEIGHT)
for i in range(MASK_WIDTH * MASK_HEIGHT):
#mask8[i] = lv.color_brightness(mask_c[i]);
mask8[i] = mask_map[4*i]
# Create an object from where the text will be masked out.
# Now it's a rectangle with a gradient but it could be an image too
grad = lv.obj(lv.scr_act())
grad.set_size( MASK_WIDTH, MASK_HEIGHT)
grad.center()
grad.set_style_bg_color(lv.color_hex(0xff0000), 0)
grad.set_style_bg_grad_color(lv.color_hex(0x0000ff), 0)
grad.set_style_bg_grad_dir(lv.GRAD_DIR.HOR, 0)
grad.add_event(lambda e: add_mask_event_cb(e,mask8), lv.EVENT.ALL, None)
pass