led: add lines and texts

include/render.h

@@ -33,6 +33,7 @@ static inline SDL_Rect operator+(const SDL_Rect &A, const SDL_Rect &B) {
   return Rect(A.x + B.x, A.y + B.y, A.w + B.w, A.h + B.h);
 }
 
+void draw_thicker_line(SDL_Renderer *renderer, const SDL_Point *point, int n);
 void draw_surrounding_line(SDL_Renderer *renderer, SDL_Rect r, int gap);
 
 #endif

src/led.cpp

@@ -1,4 +1,5 @@
 #include <nvboard.h>
+#include <render.h>
 
 #define LED_X          60 + (4/2)
 #define LED_Y          360
@@ -6,6 +7,57 @@
 #define LED_WIDTH      16
 #define LED_HEIGHT     8
 
+static void init_render_local(SDL_Renderer *renderer) {
+  // draw rectangle region
+  const int gap = 12;
+  int w = (LED_WIDTH + LED_SEP) * 16 - LED_SEP;
+  SDL_Rect r = Rect(Point(LED_X, LED_Y) - Point(gap, gap), w + gap * 2, 76 + gap * 2);
+  SDL_SetRenderDrawColor(renderer, 21, 153, 120, 0);
+  SDL_RenderFillRect(renderer, &r);
+
+  // draw line
+  SDL_SetRenderDrawColor(renderer, 0xff, 0xff, 0xff, 0);
+  SDL_Point p[2];
+  const int gap2 = gap + 4;
+  p[0] = Point(LED_X, LED_Y) + Point(-gap2, LED_HEIGHT / 2);
+  p[1] = p[0] + Point(w + gap2 * 2, 0);
+  draw_thicker_line(renderer, p, 2);
+
+  int w_group4 = (LED_WIDTH + LED_SEP) * 4;
+  p[0] = Point(LED_X, LED_Y) + Point(w_group4, 0) - Point(LED_SEP / 2, 0)
+         + Point(0, LED_HEIGHT / 2) + Point(0, -LED_SEP / 2);
+  p[1] = p[0] + Point(0, LED_SEP);
+  for (int i = 0; i < 3; i ++) {
+    draw_thicker_line(renderer, p, 2);
+    p[0] = p[0] + Point(w_group4, 0);
+    p[1] = p[1] + Point(w_group4, 0);
+  }
+
+  // draw indices for each LED
+  SDL_Point p0 = Point(LED_X, LED_Y) + Point(w, 0) - Point(LED_WIDTH / 2, 0)
+                 + Point(0, LED_HEIGHT * 2);
+  for (int i = 0; i < 16; i ++) {
+    char buf[8];
+    int n = snprintf(buf, 8, "%d", i);
+    SDL_Texture *t = str2texture(renderer, buf, 0xffffff, (21 << 16) | (153 << 8) | 120);
+    int w_texture = CH_WIDTH * n;
+    SDL_Rect r = Rect(p0 - Point(w_texture / 2, 0), w_texture, CH_HEIGHT);
+    SDL_RenderCopy(renderer, t, NULL, &r);
+    SDL_DestroyTexture(t);
+    p0.x -= LED_WIDTH + LED_SEP;
+  }
+
+  // draw the title
+  const char *str = "LED";
+  SDL_Texture *t = str2texture(renderer, str, 0xffffff, BOARD_BG_COLOR);
+  int w0 = CH_WIDTH * strlen(str);
+  p0 = Point(LED_X, LED_Y) - Point(gap2 + 4, 0) + Point(0, LED_HEIGHT / 2)
+       - Point(0, CH_HEIGHT / 2) - Point(w0, 0);
+  r = Rect(p0, w0, CH_HEIGHT);
+  SDL_RenderCopy(renderer, t, NULL, &r);
+  SDL_DestroyTexture(t);
+}
+
 void init_led(SDL_Renderer *renderer) {
   SDL_Texture *tled_off = new_texture(renderer, LED_WIDTH, LED_HEIGHT, 0x7f, 0x7f, 0x7f);
   SDL_Texture *tled_g   = new_texture(renderer, LED_WIDTH, LED_HEIGHT, 0x00, 0xff, 0x00);
@@ -17,6 +69,7 @@ void init_led(SDL_Renderer *renderer) {
   SDL_Texture* tled_gb  = new_texture(renderer, LED_WIDTH, LED_HEIGHT, 0x00, 0xff, 0xff);
   SDL_Texture* tled_rgb = new_texture(renderer, LED_WIDTH, LED_HEIGHT, 0xff, 0xff, 0xff);
 #endif
+  init_render_local(renderer);
 
   for (int i = 0; i < 16; ++i) {
     Component *ptr = new Component(renderer, 2, 0, NAIVE_LED_TYPE);

src/render.cpp

@@ -28,7 +28,7 @@ SDL_Texture* new_texture(SDL_Renderer *renderer, int w, int h, int r, int g, int
   return surface2texture(renderer, s);
 }
 
-static void draw_thicker_line(SDL_Renderer *renderer, const SDL_Point *point, int n) {
+void draw_thicker_line(SDL_Renderer *renderer, const SDL_Point *point, int n) {
   SDL_RenderDrawLines(renderer, point, n);
 
   SDL_Point *p = new SDL_Point[n];