Gradient Palette support for scrolling text

checking 'gradient' applies the selected palette as a gradient, default palette still does color gradient.
Aircoookie · Sep 19, 2024 · c98679f · c98679f
1 parent 6cd500b
commit c98679f
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Showing 3 changed files with 17 additions and 12 deletions.
diff --git a/wled00/FX.cpp b/wled00/FX.cpp
@@ -6175,17 +6175,21 @@ uint16_t mode_2Dscrollingtext(void) {
   }
 
   if (!SEGMENT.check2) SEGMENT.fade_out(255 - (SEGMENT.custom1>>4));  // trail
+  bool usePaletteGradient = false;
+  uint32_t col1 = SEGMENT.color_from_palette(SEGENV.aux1, false, PALETTE_SOLID_WRAP, 0);
+  uint32_t col2 = BLACK;
+  if (SEGMENT.check1) { // use gradient
+    if(SEGMENT.palette == 0) { // use colors for gradient
+    col1 = SEGCOLOR(0);
+    col2 = SEGCOLOR(2);
+    }
+    else usePaletteGradient = true;
+  }
 
   for (int i = 0; i < numberOfLetters; i++) {
     int xoffset = int(cols) - int(SEGENV.aux0) + rotLW*i;
     if (xoffset + rotLW < 0) continue; // don't draw characters off-screen
-    uint32_t col1 = SEGMENT.color_from_palette(SEGENV.aux1, false, PALETTE_SOLID_WRAP, 0);
-    uint32_t col2 = BLACK;
-    if (SEGMENT.check1 && SEGMENT.palette == 0) {
-      col1 = SEGCOLOR(0);
-      col2 = SEGCOLOR(2);
-    }
-    SEGMENT.drawCharacter(text[i], xoffset, yoffset, letterWidth, letterHeight, col1, col2, map(SEGMENT.custom3, 0, 31, -2, 2));
+    SEGMENT.drawCharacter(text[i], xoffset, yoffset, letterWidth, letterHeight, col1, col2, map(SEGMENT.custom3, 0, 31, -2, 2), usePaletteGradient);
   }
 
   return FRAMETIME;

diff --git a/wled00/FX.h b/wled00/FX.h
@@ -650,9 +650,9 @@ typedef struct Segment {
     inline void fillCircle(uint16_t cx, uint16_t cy, uint8_t radius, CRGB c, bool soft = false) { fillCircle(cx, cy, radius, RGBW32(c.r,c.g,c.b,0), soft); }
     void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint32_t c, bool soft = false);
     inline void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, CRGB c, bool soft = false) { drawLine(x0, y0, x1, y1, RGBW32(c.r,c.g,c.b,0), soft); } // automatic inline
-    void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2 = 0, int8_t rotate = 0);
+    void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2 = 0, int8_t rotate = 0, bool usePalGrad = false);
     inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB c) { drawCharacter(chr, x, y, w, h, RGBW32(c.r,c.g,c.b,0)); } // automatic inline
-    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB c, CRGB c2, int8_t rotate = 0) { drawCharacter(chr, x, y, w, h, RGBW32(c.r,c.g,c.b,0), RGBW32(c2.r,c2.g,c2.b,0), rotate); } // automatic inline
+    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB c, CRGB c2, int8_t rotate = 0, bool usePalGrad = false) { drawCharacter(chr, x, y, w, h, RGBW32(c.r,c.g,c.b,0), RGBW32(c2.r,c2.g,c2.b,0), rotate, usePalGrad); } // automatic inline
     void wu_pixel(uint32_t x, uint32_t y, CRGB c);
     inline void blur2d(fract8 blur_amount) { blur(blur_amount); }
     inline void fill_solid(CRGB c) { fill(RGBW32(c.r,c.g,c.b,0)); }
@@ -688,9 +688,9 @@ typedef struct Segment {
     inline void fillCircle(uint16_t cx, uint16_t cy, uint8_t radius, CRGB c, bool soft = false) {}
     inline void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint32_t c, bool soft = false) {}
     inline void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, CRGB c, bool soft = false) {}
-    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t = 0, int8_t = 0) {}
+    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t = 0, int8_t = 0, bool = false) {}
     inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB color) {}
-    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB c, CRGB c2, int8_t rotate = 0) {}
+    inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, CRGB c, CRGB c2, int8_t rotate = 0, bool usePalGrad = false) {}
     inline void wu_pixel(uint32_t x, uint32_t y, CRGB c) {}
   #endif
 } segment;

diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
@@ -654,7 +654,7 @@ void Segment::drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint3
 
 // draws a raster font character on canvas
 // only supports: 4x6=24, 5x8=40, 5x12=60, 6x8=48 and 7x9=63 fonts ATM
-void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2, int8_t rotate) {
+void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2, int8_t rotate, bool usePalGrad) {
   if (!isActive()) return; // not active
   if (chr < 32 || chr > 126) return; // only ASCII 32-126 supported
   chr -= 32; // align with font table entries
@@ -664,6 +664,7 @@ void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w,
 
   CRGB col = CRGB(color);
   CRGBPalette16 grad = CRGBPalette16(col, col2 ? CRGB(col2) : col);
+  if(usePalGrad) grad = SEGPALETTE; // selected palette as gradient
 
   //if (w<5 || w>6 || h!=8) return;
   for (int i = 0; i<h; i++) { // character height