feat(image): add lv_image_align_t to stretch, tile, and align images

related to #4733

tests/src/test_cases/test_image.c

@@ -0,0 +1,367 @@
+#if LV_BUILD_TEST || 1
+#include "../lvgl.h"
+
+#include "unity/unity.h"
+
+LV_IMAGE_DECLARE(test_img_lvgl_logo_png);
+
+void setUp(void)
+{
+
+}
+
+void tearDown(void)
+{
+    /* Function run after every test */
+    lv_obj_clean(lv_screen_active());
+}
+
+static lv_obj_t * img_create(void)
+{
+    lv_obj_t * img = lv_image_create(lv_screen_active());
+    lv_image_set_src(img, &test_img_lvgl_logo_png);
+    lv_obj_set_style_bg_opa(img, LV_OPA_20, 0);
+    lv_obj_set_style_shadow_width(img, 10, 0);
+    lv_obj_set_style_shadow_color(img, lv_color_hex(0xff0000), 0);
+    return img;
+}
+
+void test_image_rotated_pivot_center(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 100 + (i % 4) * 160, 150 + (i / 4) * 150);
+        lv_image_set_rotation(img, i * 450);
+        /*The default pivot should be the center*/
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_rotate_pivot_center.png");
+}
+
+void test_image_rotated_pivot_top_left(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 120 + (i % 4) * 180, 100 + (i / 4) * 300);
+        lv_image_set_rotation(img, i * 450);
+        lv_image_set_pivot(img, 0, 0);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_rotate_pivot_top_left.png");
+}
+
+void test_image_scale_pivot_center(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 40 + (i % 4) * 200, 150 + (i / 4) * 150);
+        lv_image_set_scale(img, 64 + i * 64);
+        /*The default pivot should be the center*/
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_pivot_center.png");
+}
+
+void test_image_scale_pivot_top_left(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 10 + (i % 4) * 190, 150 + (i / 4) * 150);
+        lv_image_set_scale(img, 64 + i * 64);
+        lv_image_set_pivot(img, 0, 0);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_pivot_top_left.png");
+}
+
+void test_image_scale_x_pivot_center(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 40 + (i % 4) * 200, 150 + (i / 4) * 150);
+        lv_image_set_scale_x(img, 64 + i * 64);
+        /*The default pivot should be the center*/
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_x_pivot_center.png");
+}
+
+void test_image_scale_x_pivot_top_left(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 10 + (i % 4) * 190, 150 + (i / 4) * 150);
+        lv_image_set_scale_x(img, 64 + i * 64);
+        lv_image_set_pivot(img, 0, 0);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_x_pivot_top_left.png");
+}
+
+void test_image_scale_y_pivot_center(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 40 + (i % 4) * 200, 150 + (i / 4) * 150);
+        lv_image_set_scale_y(img, 64 + i * 64);
+        /*The default pivot should be the center*/
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_y_pivot_center.png");
+}
+
+void test_image_scale_y_pivot_top_left(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 10 + (i % 4) * 190, 150 + (i / 4) * 150);
+        lv_image_set_scale_y(img, 64 + i * 64);
+        lv_image_set_pivot(img, 0, 0);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_scale_y_pivot_top_left.png");
+}
+
+void test_image_rotate_and_scale_pivot_center(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 40 + (i % 4) * 200, 150 + (i / 4) * 150);
+        lv_image_set_scale_x(img, 64 + i * 64);
+        lv_image_set_scale_y(img, 32 + i * 96);
+        lv_image_set_rotation(img, 200 + i * 333);
+        /*The default pivot should be the center*/
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_rotate_and_scale_pivot_center.png");
+}
+
+void test_image_rotate_and_scale_pivot_top_left(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    for(i = 0; i < 8; i++) {
+        img = img_create();
+        lv_obj_set_pos(img, 120 + (i % 4) * 180, 120 + (i / 4) * 220);
+        lv_image_set_scale_x(img, 64 + i * 64);
+        lv_image_set_scale_y(img, 32 + i * 96);
+        lv_image_set_rotation(img, 200 + i * 333);
+        lv_image_set_pivot(img, 0, 0);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_rotate_and_scale_pivot_top_left.png");
+}
+
+void test_image_normal_align(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    lv_image_align_t aligns[] = {
+        LV_IMAGE_ALIGN_TOP_LEFT, LV_IMAGE_ALIGN_TOP_MID, LV_IMAGE_ALIGN_TOP_RIGHT,
+        LV_IMAGE_ALIGN_LEFT_MID, LV_IMAGE_ALIGN_CENTER, LV_IMAGE_ALIGN_RIGHT_MID,
+        LV_IMAGE_ALIGN_BOTTOM_LEFT, LV_IMAGE_ALIGN_BOTTOM_MID, LV_IMAGE_ALIGN_BOTTOM_RIGHT,
+    };
+
+    for(i = 0; i < 9; i++) {
+        img = img_create();
+        lv_obj_set_size(img, 200, 120);
+        lv_obj_set_pos(img, 30 + (i % 3) * 260, 40 + (i / 3) * 150);
+        lv_image_set_align(img, aligns[i]);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_normal_align.png");
+}
+
+void test_image_normal_align_offset(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    lv_image_align_t aligns[] = {
+        LV_IMAGE_ALIGN_TOP_LEFT, LV_IMAGE_ALIGN_TOP_MID, LV_IMAGE_ALIGN_TOP_RIGHT,
+        LV_IMAGE_ALIGN_LEFT_MID, LV_IMAGE_ALIGN_CENTER, LV_IMAGE_ALIGN_RIGHT_MID,
+        LV_IMAGE_ALIGN_BOTTOM_LEFT, LV_IMAGE_ALIGN_BOTTOM_MID, LV_IMAGE_ALIGN_BOTTOM_RIGHT,
+    };
+
+    for(i = 0; i < 9; i++) {
+        img = img_create();
+        lv_obj_set_size(img, 200, 120);
+        lv_obj_set_pos(img, 30 + (i % 3) * 260, 40 + (i / 3) * 150);
+        lv_image_set_align(img, aligns[i]);
+        lv_image_set_offset_x(img, 15);
+        lv_image_set_offset_y(img, 20);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_normal_align_offset.png");
+}
+
+void test_image_transform_align(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    lv_image_align_t aligns[] = {
+        LV_IMAGE_ALIGN_TOP_LEFT, LV_IMAGE_ALIGN_TOP_MID, LV_IMAGE_ALIGN_TOP_RIGHT,
+        LV_IMAGE_ALIGN_LEFT_MID, LV_IMAGE_ALIGN_CENTER, LV_IMAGE_ALIGN_RIGHT_MID,
+        LV_IMAGE_ALIGN_BOTTOM_LEFT, LV_IMAGE_ALIGN_BOTTOM_MID, LV_IMAGE_ALIGN_BOTTOM_RIGHT,
+    };
+
+    for(i = 0; i < 9; i++) {
+        img = img_create();
+        lv_obj_set_size(img, 200, 120);
+        lv_obj_set_pos(img, 30 + (i % 3) * 260, 40 + (i / 3) * 150);
+        lv_image_set_scale_x(img, 300);
+        lv_image_set_scale_y(img, 200);
+        lv_image_set_rotation(img, 200);
+        lv_image_set_align(img, aligns[i]);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_transform_align.png");
+}
+
+void test_image_transform_align_offset(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+    lv_image_align_t aligns[] = {
+        LV_IMAGE_ALIGN_TOP_LEFT, LV_IMAGE_ALIGN_TOP_MID, LV_IMAGE_ALIGN_TOP_RIGHT,
+        LV_IMAGE_ALIGN_LEFT_MID, LV_IMAGE_ALIGN_CENTER, LV_IMAGE_ALIGN_RIGHT_MID,
+        LV_IMAGE_ALIGN_BOTTOM_LEFT, LV_IMAGE_ALIGN_BOTTOM_MID, LV_IMAGE_ALIGN_BOTTOM_RIGHT,
+    };
+
+    for(i = 0; i < 9; i++) {
+        img = img_create();
+        lv_obj_set_size(img, 200, 120);
+        lv_obj_set_pos(img, 30 + (i % 3) * 260, 40 + (i / 3) * 150);
+        lv_image_set_align(img, aligns[i]);
+        lv_image_set_offset_x(img, 15);
+        lv_image_set_offset_y(img, 20);
+        lv_image_set_scale_x(img, 300);
+        lv_image_set_scale_y(img, 200);
+        lv_image_set_rotation(img, 200);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_transform_align_offset.png");
+}
+
+void test_image_stretch(void)
+{
+    lv_obj_t * img;
+    uint32_t i;
+
+    int32_t img_w = test_img_lvgl_logo_png.header.w;
+    int32_t img_h = test_img_lvgl_logo_png.header.h;
+
+    int32_t w_array[] = {img_w / 2, img_w, img_w * 2};
+    int32_t h_array[] = {img_h / 2, img_h, img_h * 2};
+
+
+    for(i = 0; i < 9; i++) {
+        img = img_create();
+        lv_obj_set_size(img, w_array[i / 3], h_array[i % 3]);
+        lv_obj_set_pos(img, 30 + (i % 3) * 260, 40 + (i / 3) * 150);
+        lv_image_set_align(img, LV_IMAGE_ALIGN_STRETCH);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_stretch.png");
+}
+
+
+void test_image_tile(void)
+{
+    lv_obj_t * img;
+
+    img = img_create();
+    lv_obj_set_size(img, 350, LV_SIZE_CONTENT);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+    lv_obj_set_pos(img, 20, 20);
+    img = img_create();
+
+    lv_obj_set_size(img, LV_SIZE_CONTENT, 150);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+    lv_obj_set_pos(img, 420, 20);
+
+    img = img_create();
+    lv_obj_set_size(img, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+    lv_obj_set_pos(img, 20, 220);
+    lv_image_set_offset_x(img, -20);
+    lv_image_set_offset_y(img, 20);
+
+    img = img_create();
+    lv_obj_set_size(img, 150, 150);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+    lv_obj_set_pos(img, 220, 220);
+
+    img = img_create();
+    lv_obj_set_size(img, 150, 150);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+    lv_obj_set_pos(img, 420, 220);
+    lv_image_set_offset_x(img, -2000);
+    lv_image_set_offset_y(img, 2000);
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("image_tile.png");
+}
+
+void test_image_ignore_transformation_settings_when_stretched(void)
+{
+    lv_obj_t * img = img_create();
+    lv_obj_set_size(img, 200, 300);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_STRETCH);
+
+    lv_image_set_rotation(img, 100);
+    lv_image_set_pivot(img, 200, 300);
+    TEST_ASSERT_EQUAL_INT(0, lv_image_get_rotation(img));
+
+    lv_point_t pivot;
+    lv_image_get_pivot(img, &pivot);
+    TEST_ASSERT_EQUAL_INT(0, pivot.x);
+    TEST_ASSERT_EQUAL_INT(0, pivot.y);
+
+    int32_t scale_x_original = lv_image_get_scale_x(img);
+    int32_t scale_y_original = lv_image_get_scale_y(img);
+    lv_image_set_scale_x(img, 400);
+    lv_image_set_scale_y(img, 500);
+    TEST_ASSERT_EQUAL_INT(scale_x_original, lv_image_get_scale_x(img));
+    TEST_ASSERT_EQUAL_INT(scale_y_original, lv_image_get_scale_y(img));
+}
+
+void test_image_ignore_transformation_settings_when_tiled(void)
+{
+    lv_obj_t * img = img_create();
+    lv_obj_set_size(img, 200, 300);
+    lv_image_set_align(img, LV_IMAGE_ALIGN_TILE);
+
+    lv_image_set_rotation(img, 100);
+    lv_image_set_pivot(img, 200, 300);
+    lv_image_set_scale_x(img, 400);
+    lv_image_set_scale_y(img, 500);
+
+    lv_point_t pivot;
+    lv_image_get_pivot(img, &pivot);
+    TEST_ASSERT_EQUAL_INT(0, pivot.x);
+    TEST_ASSERT_EQUAL_INT(0, pivot.y);
+    TEST_ASSERT_EQUAL_INT(0, lv_image_get_rotation(img));
+    TEST_ASSERT_EQUAL_INT(LV_SCALE_NONE, lv_image_get_scale_x(img));
+    TEST_ASSERT_EQUAL_INT(LV_SCALE_NONE, lv_image_get_scale_y(img));
+}
+
+
+
+#endif