From 6a972e02497d3015236189f72931c3d59fa51755 Mon Sep 17 00:00:00 2001
From: Jens Arnold <amiconn@rockbox.org>
Date: Sun, 26 Feb 2006 13:37:42 +0000
Subject: Finally - grayscale library support for the simulators. Currently SDL
 only, win32 and x11 won't link anymore due to missing simulator functions.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8845 a1c6a512-1295-4272-9138-f99709370657
---
 uisimulator/sdl/lcd-bitmap.c | 89 ++++++++++++++++++++++++++++++++++++--------
 1 file changed, 74 insertions(+), 15 deletions(-)

(limited to 'uisimulator/sdl/lcd-bitmap.c')

diff --git a/uisimulator/sdl/lcd-bitmap.c b/uisimulator/sdl/lcd-bitmap.c
index 2fd7576ecc..788a5f662d 100644
--- a/uisimulator/sdl/lcd-bitmap.c
+++ b/uisimulator/sdl/lcd-bitmap.c
@@ -22,6 +22,7 @@
 #include "lcd-sdl.h"
 
 SDL_Surface* lcd_surface;
+int lcd_backlight_val;
 
 #if LCD_DEPTH <= 8
 SDL_Color lcd_color_zero = {UI_LCD_BGCOLOR, 0};
@@ -29,22 +30,27 @@ SDL_Color lcd_backlight_color_zero = {UI_LCD_BGCOLORLIGHT, 0};
 SDL_Color lcd_color_max  = {0, 0, 0, 0};
 #endif
 
-static inline Uint32 get_lcd_pixel(int x, int y)
+#if LCD_DEPTH < 8
+int lcd_ex_shades = 0;
+unsigned long (*lcd_ex_getpixel)(int, int) = NULL;
+#endif
+
+static unsigned long get_lcd_pixel(int x, int y)
 {
 #if LCD_DEPTH == 1
-            return ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1);
+    return ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1);
 #elif LCD_DEPTH == 2
 #if LCD_PIXELFORMAT == HORIZONTAL_PACKING
-            return ((lcd_framebuffer[y][x/4] >> (2 * (x & 3))) & 3);
+    return ((lcd_framebuffer[y][x/4] >> (2 * (x & 3))) & 3);
 #else
-            return ((lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3);
+    return ((lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3);
 #endif
 #elif LCD_DEPTH == 16
 #if LCD_PIXELFORMAT == RGB565SWAPPED
-            unsigned bits = lcd_framebuffer[y][x];
-            return (bits >> 8) | (bits << 8);
+    unsigned bits = lcd_framebuffer[y][x];
+    return (bits >> 8) | (bits << 8);
 #else
-            return lcd_framebuffer[y][x];
+    return lcd_framebuffer[y][x];
 #endif
 #endif
 }
@@ -57,22 +63,41 @@ void lcd_update(void)
 
 void lcd_update_rect(int x_start, int y_start, int width, int height)
 {
-    sdl_update_rect(lcd_surface, x_start, y_start, width, height, LCD_WIDTH, LCD_HEIGHT,
-        background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0,
-        get_lcd_pixel);
+    sdl_update_rect(lcd_surface, x_start, y_start, width, height, LCD_WIDTH,
+                    LCD_HEIGHT, get_lcd_pixel);
+    sdl_gui_update(lcd_surface, x_start, y_start, width, height, LCD_WIDTH,
+                   LCD_HEIGHT, background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
 }
 
 #ifdef CONFIG_BACKLIGHT
 void sim_backlight(int value)
 {
+    lcd_backlight_val = value;
+
 #if LCD_DEPTH <= 8
     if (value > 0) {
-        sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max, (1<<LCD_DEPTH));
+        sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero,
+                         &lcd_color_max, 0, (1<<LCD_DEPTH));
     } else {
-        sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max, (1<<LCD_DEPTH));
+        sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max,
+                         0, (1<<LCD_DEPTH));
     }
-    
-    lcd_update();
+#if LCD_DEPTH < 8
+    if (lcd_ex_shades) {
+        if (value > 0) {
+            sdl_set_gradient(lcd_surface, &lcd_color_max,
+                             &lcd_backlight_color_zero, (1<<LCD_DEPTH),
+                             lcd_ex_shades);
+        } else {
+            sdl_set_gradient(lcd_surface, &lcd_color_max, &lcd_color_zero,
+                             (1<<LCD_DEPTH), lcd_ex_shades);
+        }
+    }
+#endif
+
+    sdl_gui_update(lcd_surface, 0, 0, LCD_WIDTH, LCD_HEIGHT, LCD_WIDTH,
+                   LCD_HEIGHT, background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
+
 #else
     DEBUGF("backlight: %s\n", (value > 0) ? "on" : "off");
 #endif
@@ -91,7 +116,41 @@ void sim_lcd_init(void)
 #endif
 
 #if LCD_DEPTH <= 8
-    sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max, (1<<LCD_DEPTH));
+    sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max,
+                     0, (1<<LCD_DEPTH));
+#endif
+}
+
+#if LCD_DEPTH < 8
+void sim_lcd_ex_init(int shades, unsigned long (*getpixel)(int, int))
+{
+    lcd_ex_shades = shades;
+    lcd_ex_getpixel = getpixel;
+    if (shades) {
+#ifdef CONFIG_BACKLIGHT
+        if (lcd_backlight_val > 0) {
+            sdl_set_gradient(lcd_surface, &lcd_color_max,
+                             &lcd_backlight_color_zero, (1<<LCD_DEPTH),
+                             shades);
+        }
+        else 
 #endif
+        {
+            sdl_set_gradient(lcd_surface, &lcd_color_max, &lcd_color_zero,
+                             (1<<LCD_DEPTH), shades);
+        }
+    }
 }
 
+void sim_lcd_ex_update_rect(int x_start, int y_start, int width, int height)
+{
+    if (lcd_ex_getpixel) {
+        sdl_update_rect(lcd_surface, x_start, y_start, width, height,
+                        LCD_WIDTH, LCD_HEIGHT, lcd_ex_getpixel);
+        sdl_gui_update(lcd_surface, x_start, y_start, width, height, LCD_WIDTH,
+                       LCD_HEIGHT, background ? UI_LCD_POSX : 0,
+                       background? UI_LCD_POSY : 0);
+    }
+}
+#endif
+
-- 
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