Use rotated authentic C64 bitmap font

src/c64_ui.c

@@ -1,6 +1,84 @@
 #include "c64_ui.h"
 #include <lvgl.h>
-#define C64_BLUE lv_color_make(64,49,141)
-#define C64_LIGHT_BLUE lv_color_make(120,105,196)
-static void cursor_blink(void*o,int32_t v){lv_obj_set_style_opa((lv_obj_t*)o,v?LV_OPA_COVER:LV_OPA_TRANSP,LV_PART_MAIN);}
-void c64_ui_create(void){lv_obj_t*s=lv_scr_act();lv_obj_set_style_bg_color(s,C64_BLUE,LV_PART_MAIN);lv_obj_set_style_bg_opa(s,LV_OPA_COVER,LV_PART_MAIN);lv_obj_clear_flag(s,LV_OBJ_FLAG_SCROLLABLE);lv_obj_t*r=lv_label_create(s);lv_label_set_text(r,"READY.");lv_obj_set_style_text_color(r,C64_LIGHT_BLUE,LV_PART_MAIN);lv_obj_set_style_text_font(r,&lv_font_montserrat_48,LV_PART_MAIN);lv_obj_align(r,LV_ALIGN_TOP_LEFT,12,44);lv_obj_t*c=lv_obj_create(s);lv_obj_remove_style_all(c);lv_obj_set_size(c,29,8);lv_obj_set_style_bg_color(c,C64_LIGHT_BLUE,LV_PART_MAIN);lv_obj_set_style_bg_opa(c,LV_OPA_COVER,LV_PART_MAIN);lv_obj_align_to(c,r,LV_ALIGN_OUT_BOTTOM_LEFT,0,10);lv_anim_t a;lv_anim_init(&a);lv_anim_set_var(&a,c);lv_anim_set_values(&a,1,0);lv_anim_set_time(&a,500);lv_anim_set_playback_time(&a,500);lv_anim_set_repeat_count(&a,LV_ANIM_REPEAT_INFINITE);lv_anim_set_exec_cb(&a,cursor_blink);lv_anim_start(&a);}
+#include <stdint.h>
+
+#define C64_BLUE       lv_color_make(64, 49, 141)
+#define C64_LIGHT_BLUE lv_color_make(120, 105, 196)
+#define PIXEL_SCALE 6
+#define CELL_SIZE (8 * PIXEL_SCALE)
+
+typedef struct {
+  char character;
+  uint8_t rows[8];
+} c64_glyph_t;
+
+/* Exact uppercase/graphics glyph rows from the C64 system character ROM. */
+static const c64_glyph_t glyphs[] = {
+  {'R', {0x7C, 0x66, 0x66, 0x7C, 0x78, 0x6C, 0x66, 0x00}},
+  {'E', {0x7E, 0x60, 0x60, 0x78, 0x60, 0x60, 0x7E, 0x00}},
+  {'A', {0x18, 0x3C, 0x66, 0x7E, 0x66, 0x66, 0x66, 0x00}},
+  {'D', {0x78, 0x6C, 0x66, 0x66, 0x66, 0x6C, 0x78, 0x00}},
+  {'Y', {0x66, 0x66, 0x66, 0x3C, 0x18, 0x18, 0x18, 0x00}},
+  {'.', {0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00}},
+};
+
+static const uint8_t *find_glyph(char character) {
+  for (unsigned i = 0; i < sizeof(glyphs) / sizeof(glyphs[0]); ++i) {
+    if (glyphs[i].character == character) return glyphs[i].rows;
+  }
+  return NULL;
+}
+
+static void draw_glyph(lv_obj_t *parent, char character, lv_coord_t x, lv_coord_t y) {
+  const uint8_t *rows = find_glyph(character);
+  if (!rows) return;
+
+  for (int row = 0; row < 8; ++row) {
+    for (int column = 0; column < 8; ++column) {
+      if ((rows[row] & (0x80 >> column)) == 0) continue;
+      lv_obj_t *pixel = lv_obj_create(parent);
+      lv_obj_remove_style_all(pixel);
+      lv_obj_set_size(pixel, PIXEL_SCALE, PIXEL_SCALE);
+      lv_obj_set_pos(pixel, x + column * PIXEL_SCALE, y + row * PIXEL_SCALE);
+      lv_obj_set_style_bg_color(pixel, C64_LIGHT_BLUE, LV_PART_MAIN);
+      lv_obj_set_style_bg_opa(pixel, LV_OPA_COVER, LV_PART_MAIN);
+    }
+  }
+}
+
+static void cursor_blink(void *object, int32_t visible) {
+  lv_obj_set_style_bg_opa((lv_obj_t *)object,
+                          visible ? LV_OPA_COVER : LV_OPA_TRANSP,
+                          LV_PART_MAIN);
+}
+
+void c64_ui_create(void) {
+  static const char text[] = "READY.";
+  lv_obj_t *screen = lv_scr_act();
+  lv_obj_set_style_bg_color(screen, C64_BLUE, LV_PART_MAIN);
+  lv_obj_set_style_bg_opa(screen, LV_OPA_COVER, LV_PART_MAIN);
+  lv_obj_clear_flag(screen, LV_OBJ_FLAG_SCROLLABLE);
+
+  const lv_coord_t start_x = 48;
+  const lv_coord_t text_y = 24;
+  for (unsigned i = 0; i < sizeof(text) - 1; ++i) {
+    draw_glyph(screen, text[i], start_x + (lv_coord_t)i * CELL_SIZE, text_y);
+  }
+
+  lv_obj_t *cursor = lv_obj_create(screen);
+  lv_obj_remove_style_all(cursor);
+  lv_obj_set_size(cursor, CELL_SIZE, CELL_SIZE);
+  lv_obj_set_pos(cursor, start_x, text_y + CELL_SIZE + 16);
+  lv_obj_set_style_bg_color(cursor, C64_LIGHT_BLUE, LV_PART_MAIN);
+  lv_obj_set_style_bg_opa(cursor, LV_OPA_COVER, LV_PART_MAIN);
+
+  lv_anim_t blink;
+  lv_anim_init(&blink);
+  lv_anim_set_var(&blink, cursor);
+  lv_anim_set_values(&blink, 1, 0);
+  lv_anim_set_time(&blink, 900);
+  lv_anim_set_playback_time(&blink, 900);
+  lv_anim_set_repeat_count(&blink, LV_ANIM_REPEAT_INFINITE);
+  lv_anim_set_exec_cb(&blink, cursor_blink);
+  lv_anim_start(&blink);
+}

src/user_config.h

@@ -44,7 +44,7 @@
 
 #define USER_DISP_ROT_90    1
 #define USER_DISP_ROT_NONO  0
-#define Rotated USER_DISP_ROT_NONO   //软件实现旋转
+#define Rotated USER_DISP_ROT_90   //软件实现旋转