1 files changed, 72 insertions, 3 deletions

diff --git a/minui/graphics.cpp b/minui/graphics.cpp
index c0eea9e..1f25531 100644
--- a/minui/graphics.cpp
+++ b/minui/graphics.cpp
@@ -41,6 +41,20 @@ struct GRFont {
     int cheight;
 };
 
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+#endif
+
+typedef struct {
+    char        name[80];
+    GRFont*     font;
+} font_item;
+
+static font_item gr_fonts[] = {
+    { "menu", NULL },
+    { "log", NULL },
+};
+
 static GRFont* gr_font = NULL;
 static minui_backend* gr_backend = NULL;
 
@@ -103,6 +117,36 @@ static void text_blend(unsigned char* src_p, int src_row_bytes,
     }
 }
 
+static int rainbow_index = 0;
+static int rainbow_enabled = 0;
+static int rainbow_colors[] = { 255, 0, 0,        // red
+                                255, 127, 0,      // orange
+                                255, 255, 0,      // yellow
+                                0, 255, 0,        // green
+                                60, 80, 255,      // blue
+                                143, 0, 255 };    // violet
+static int num_rb_colors =
+        (sizeof(rainbow_colors)/sizeof(rainbow_colors[0])) / 3;
+
+static void rainbow(int col) {
+    int rainbow_color = ((rainbow_index + col) % num_rb_colors) * 3;
+    gr_color(rainbow_colors[rainbow_color], rainbow_colors[rainbow_color+1],
+                rainbow_colors[rainbow_color+2], 255);
+}
+
+void set_rainbow_mode(int enabled) {
+    rainbow_enabled = enabled;
+}
+
+void move_rainbow(int x) {
+    rainbow_index += x;
+    if (rainbow_index < 0) {
+        rainbow_index = num_rb_colors - 1;
+    } else if (rainbow_index >= num_rb_colors) {
+        rainbow_index = 0;
+    }
+}
+
 void gr_text(int x, int y, const char *s, bool bold)
 {
     GRFont* font = gr_font;
@@ -116,6 +160,8 @@ void gr_text(int x, int y, const char *s, bool bold)
 
     unsigned char ch;
     while ((ch = *s++)) {
+        if (rainbow_enabled) rainbow(x / font->cwidth);
+
         if (outside(x, y) || outside(x+font->cwidth-1, y+font->cheight-1)) break;
 
         if (ch < ' ' || ch > '~') {
@@ -229,6 +275,17 @@ void gr_fill(int x1, int y1, int x2, int y2)
     }
 }
 
+void gr_set_font(const char* name)
+{
+    unsigned int idx;
+    for (idx = 0; idx < ARRAY_SIZE(gr_fonts); ++idx) {
+        if (strcmp(name, gr_fonts[idx].name) == 0) {
+            gr_font = gr_fonts[idx].font;
+            break;
+        }
+    }
+}
+
 void gr_blit(GRSurface* source, int sx, int sy, int w, int h, int dx, int dy) {
     if (source == NULL) return;
 
@@ -267,11 +324,14 @@ unsigned int gr_get_height(GRSurface* surface) {
     return surface->height;
 }
 
-static void gr_init_font(void)
+static void gr_init_one_font(int idx)
 {
-    gr_font = reinterpret_cast<GRFont*>(calloc(sizeof(*gr_font), 1));
+    char name[80];
+    GRFont* gr_font = reinterpret_cast<GRFont*>(calloc(sizeof(*gr_font), 1));
+    snprintf(name, sizeof(name), "font_%s", gr_fonts[idx].name);
+    gr_fonts[idx].font = gr_font;
 
-    int res = res_create_alpha_surface("font", &(gr_font->texture));
+    int res = res_create_alpha_surface(name, &(gr_font->texture));
     if (res == 0) {
         // The font image should be a 96x2 array of character images.  The
         // columns are the printable ASCII characters 0x20 - 0x7f.  The
@@ -303,6 +363,15 @@ static void gr_init_font(void)
     }
 }
 
+static void gr_init_font()
+{
+    unsigned int idx;
+    for (idx = 0; idx < ARRAY_SIZE(gr_fonts); ++idx) {
+        gr_init_one_font(idx);
+    }
+    gr_font = gr_fonts[0].font;
+}
+
 #if 0
 // Exercises many of the gr_*() functions; useful for testing.
 static void gr_test() {