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feat(obj): add transform matrix attribute (#7187)

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This commit is contained in:
VIFEX
2024-11-09 15:01:22 +08:00
committed by GitHub
parent f89ac3677e
commit 43a3c65b82
15 changed files with 283 additions and 14 deletions
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1
examples/widgets/lv_example_widgets.h
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@@ -111,6 +111,7 @@ void lv_example_msgbox_2(void);
void lv_example_obj_1(void);
void lv_example_obj_2(void);
void lv_example_obj_3(void);
void lv_example_roller_1(void);
void lv_example_roller_2(void);

5
examples/widgets/obj/index.rst
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@@ -11,3 +11,8 @@ Make an object draggable
.. lv_example:: widgets/obj/lv_example_obj_2
:language: c
Transform object using a 3x3 matrix
-----------------------------------
.. lv_example:: widgets/obj/lv_example_obj_3
:language: c

42
examples/widgets/obj/lv_example_obj_3.c Normal file
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@@ -0,0 +1,42 @@
#include "../../lv_examples.h"
#if LV_BUILD_EXAMPLES
#if LV_DRAW_TRANSFORM_USE_MATRIX
static void timer_cb(lv_timer_t * timer)
{
lv_obj_t * obj = lv_timer_get_user_data(timer);
static float value = 0.1f;
lv_matrix_t matrix;
lv_matrix_identity(&matrix);
lv_matrix_scale(&matrix, value, 1);
lv_matrix_rotate(&matrix, value * 360);
lv_obj_set_transform(obj, &matrix);
value += 0.01f;
if(value > 2.0f) {
lv_obj_reset_transform(obj);
value = 0.1f;
}
}
void lv_example_obj_3(void)
{
lv_obj_t * obj = lv_obj_create(lv_screen_active());
lv_obj_center(obj);
lv_timer_create(timer_cb, 20, obj);
}
#else
void lv_example_obj_3(void)
{
lv_obj_t * label = lv_label_create(lv_screen_active());
lv_label_set_text_static(label, "LV_DRAW_TRANSFORM_USE_MATRIX is not enabled");
lv_obj_center(label);
}
#endif /*LV_DRAW_TRANSFORM_USE_MATRIX*/
#endif /*LV_BUILD_EXAMPLES*/