A39模拟器

MXC-A39/lvgl/examples/widgets/label/index.rst

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+C
+^
+  
+Line wrap, recoloring and scrolling 
+"""""""""""""""""""""""""""""""""""
+
+.. lv_example:: widgets/label/lv_example_label_1
+  :language: c
+
+Text shadow 
+""""""""""""
+
+.. lv_example:: widgets/label/lv_example_label_2
+  :language: c
+  
+Show LTR, RTL and Chinese texts
+""""""""""""""""""""""""""""""""""""
+
+.. lv_example:: widgets/label/lv_example_label_3
+  :language: c
+
+MicroPython
+^^^^^^^^^^^
+
+No examples yet.

MXC-A39/lvgl/examples/widgets/label/lv_example_label_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_LABEL && LV_BUILD_EXAMPLES
+
+/**
+ * Show line wrap, re-color, line align and text scrolling.
+ */
+void lv_example_label_1(void)
+{
+    lv_obj_t * label1 = lv_label_create(lv_scr_act());
+    lv_label_set_long_mode(label1, LV_LABEL_LONG_WRAP);     /*Break the long lines*/
+    lv_label_set_recolor(label1, true);                      /*Enable re-coloring by commands in the text*/
+    lv_label_set_text(label1, "#0000ff Re-color# #ff00ff words# #ff0000 of a# label, align the lines to the center "
+                              "and wrap long text automatically.");
+    lv_obj_set_width(label1, 150);  /*Set smaller width to make the lines wrap*/
+    lv_obj_set_style_text_align(label1, LV_TEXT_ALIGN_CENTER, 0);
+    lv_obj_align(label1, LV_ALIGN_CENTER, 0, -40);
+
+
+    lv_obj_t * label2 = lv_label_create(lv_scr_act());
+    lv_label_set_long_mode(label2, LV_LABEL_LONG_SCROLL_CIRCULAR);     /*Circular scroll*/
+    lv_obj_set_width(label2, 150);
+    lv_label_set_text(label2, "It is a circularly scrolling text. ");
+    lv_obj_align(label2, LV_ALIGN_CENTER, 0, 40);
+}
+
+#endif

MXC-A39/lvgl/examples/widgets/label/lv_example_label_1.py

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+label1 = lv.label(lv.scr_act())
+label1.set_long_mode(lv.label.LONG.BREAK)     # Break the long lines
+label1.set_recolor(True)                      # Enable re-coloring by commands in the text
+label1.set_align(lv.label.ALIGN.CENTER)       # Center aligned lines
+label1.set_text("#000080 Re-color# #0000ff words# #6666ff of a# label " +
+                "and  wrap long text automatically.")
+label1.set_width(150)
+label1.align(None, lv.ALIGN.CENTER, 0, -30)
+
+label2 = lv.label(lv.scr_act())
+label2.set_long_mode(lv.label.LONG.SROLL_CIRC)     # Circular scroll
+label2.set_width(150)
+label2.set_text("It is a circularly scrolling text. ")
+label2.align(None, lv.ALIGN.CENTER, 0, 30)

MXC-A39/lvgl/examples/widgets/label/lv_example_label_2.c

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+#include "../../lv_examples.h"
+#if LV_USE_LABEL && LV_BUILD_EXAMPLES
+
+/**
+ * Create a fake text shadow
+ */
+void lv_example_label_2(void)
+{
+    /*Create a style for the shadow*/
+    static lv_style_t style_shadow;
+    lv_style_init(&style_shadow);
+    lv_style_set_text_opa(&style_shadow, LV_OPA_30);
+    lv_style_set_text_color(&style_shadow, lv_color_black());
+
+    /*Create a label for the shadow first (it's in the background)*/
+    lv_obj_t * shadow_label = lv_label_create(lv_scr_act());
+    lv_obj_add_style(shadow_label, &style_shadow, 0);
+
+    /*Create the main label*/
+    lv_obj_t * main_label = lv_label_create(lv_scr_act());
+    lv_label_set_text(main_label, "A simple method to create\n"
+                                  "shadows on a text.\n"
+                                  "It even works with\n\n"
+                                  "newlines     and spaces.");
+
+    /*Set the same text for the shadow label*/
+    lv_label_set_text(shadow_label, lv_label_get_text(main_label));
+
+    /*Position the main label*/
+    lv_obj_align(main_label, LV_ALIGN_CENTER, 0, 0);
+
+    /*Shift the second label down and to the right by 2 pixel*/
+    lv_obj_align_to(shadow_label, main_label, LV_ALIGN_TOP_LEFT, 2, 2);
+}
+
+#endif

MXC-A39/lvgl/examples/widgets/label/lv_example_label_2.py

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+# Create a style for the shadow
+label_style = lv.style_t()
+lv.style_copy(label_style, lv.style_plain)
+label_style.text.opa = lv.OPA._50
+
+# Create a label for the shadow first (it's in the background)
+shadow_label = lv.label(lv.scr_act())
+shadow_label.set_style(lv.label.STYLE.MAIN, label_style)
+
+# Create the main label
+main_label = lv.label(lv.scr_act())
+main_label.set_text("A simple method to create\n" +
+                              "shadows on text\n" +
+                              "It even works with\n\n" +
+                              "newlines     and spaces.")
+
+# Set the same text for the shadow label
+shadow_label.set_text(main_label.get_text())
+
+# Position the main label
+main_label.align(None, lv.ALIGN.CENTER, 0, 0)
+
+# Shift the second label down and to the right by 1 pixel
+shadow_label.align(main_label, lv.ALIGN.IN_TOP_LEFT, 1, 1)

MXC-A39/lvgl/examples/widgets/label/lv_example_label_3.c

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+#include "../../lv_examples.h"
+#if LV_USE_LABEL && LV_BUILD_EXAMPLES && LV_FONT_DEJAVU_16_PERSIAN_HEBREW && LV_FONT_SIMSUN_16_CJK && LV_USE_BIDI
+
+/**
+ * Show mixed LTR, RTL and Chiease label
+ */
+void lv_example_label_3(void)
+{
+    lv_obj_t * ltr_label = lv_label_create(lv_scr_act());
+    lv_label_set_text(ltr_label, "In modern terminology, a microcontroller is similar to a system on a chip (SoC).");
+    lv_obj_set_style_text_font(ltr_label, &lv_font_montserrat_16, 0);
+    lv_obj_set_width(ltr_label, 310);
+    lv_obj_align(ltr_label, LV_ALIGN_TOP_LEFT, 5, 5);
+
+    lv_obj_t * rtl_label = lv_label_create(lv_scr_act());
+    lv_label_set_text(rtl_label, "מעבד, או בשמו המלא יחידת עיבוד מרכזית (באנגלית: CPU - Central Processing Unit).");
+    lv_obj_set_style_base_dir(rtl_label, LV_BASE_DIR_RTL, 0);
+    lv_obj_set_style_text_font(rtl_label, &lv_font_dejavu_16_persian_hebrew, 0);
+    lv_obj_set_width(rtl_label, 310);
+    lv_obj_align(rtl_label, LV_ALIGN_LEFT_MID, 5, 0);
+
+    lv_obj_t * cz_label = lv_label_create(lv_scr_act());
+    lv_label_set_text(cz_label, "嵌入式系统（Embedded System），\n是一种嵌入机械或电气系统内部、具有专一功能和实时计算性能的计算机系统。");
+    lv_obj_set_style_text_font(cz_label, &lv_font_simsun_16_cjk, 0);
+    lv_obj_set_width(cz_label, 310);
+    lv_obj_align(cz_label, LV_ALIGN_BOTTOM_LEFT, 5, -5);
+}
+
+#endif