1 files changed, 113 insertions, 0 deletions

diff --git a/firmware/target/hosted/sdl/lcd-sdl.c b/firmware/target/hosted/sdl/lcd-sdl.c
new file mode 100644
index 0000000000..15e4ba95c3
--- /dev/null
+++ b/firmware/target/hosted/sdl/lcd-sdl.c
@@ -0,0 +1,113 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 Dan Everton
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <SDL.h>
+#include "lcd-sdl.h"
+#include "sim-ui-defines.h"
+#include "system.h" /* for MIN() and MAX() */
+
+int display_zoom = 1;
+
+void sdl_update_rect(SDL_Surface *surface, int x_start, int y_start, int width,
+                     int height, int max_x, int max_y,
+                     unsigned long (*getpixel)(int, int))
+{
+    int x, y;
+    int xmax, ymax;
+    SDL_Rect dest;
+
+    ymax = y_start + height;
+    xmax = x_start + width;
+
+    if(xmax > max_x)
+        xmax = max_x;
+    if(ymax >= max_y)
+        ymax = max_y;
+
+    SDL_LockSurface(surface);
+
+    dest.w = display_zoom;
+    dest.h = display_zoom;
+
+    for (x = x_start; x < xmax; x++) {
+        dest.x = x * display_zoom;
+
+#ifdef HAVE_LCD_SPLIT
+        for (y = y_start; y < MIN(ymax, LCD_SPLIT_POS); y++) {
+            dest.y = y * display_zoom;
+
+            SDL_FillRect(surface, &dest, (Uint32)(getpixel(x, y) | 0x80));
+        }
+        for (y = MAX(y_start, LCD_SPLIT_POS); y < ymax; y++) {
+            dest.y = (y + LCD_SPLIT_LINES) * display_zoom ;
+
+            SDL_FillRect(surface, &dest, (Uint32)getpixel(x, y));
+        }
+#else
+        for (y = y_start; y < ymax; y++) {
+            dest.y = y * display_zoom;
+
+            SDL_FillRect(surface, &dest, (Uint32)getpixel(x, y));
+        }
+#endif
+    }
+
+    SDL_UnlockSurface(surface);
+}
+
+void sdl_gui_update(SDL_Surface *surface, int x_start, int y_start, int width,
+                    int height, int max_x, int max_y, int ui_x, int ui_y)
+{
+    if (x_start + width > max_x)
+        width = max_x - x_start;
+    if (y_start + height > max_y)
+        height = max_y - y_start;
+
+    SDL_Rect src = {x_start * display_zoom, y_start * display_zoom,
+                    width * display_zoom, height * display_zoom};
+    SDL_Rect dest= {(ui_x + x_start) * display_zoom,
+                    (ui_y + y_start) * display_zoom,
+                    width * display_zoom, height * display_zoom};
+
+    if (surface->flags & SDL_SRCALPHA) /* alpha needs a black background */
+        SDL_FillRect(gui_surface, &dest, 0);
+
+    SDL_BlitSurface(surface, &src, gui_surface, &dest);
+
+    SDL_Flip(gui_surface);
+}
+
+/* set a range of bitmap indices to a gradient from startcolour to endcolour */
+void sdl_set_gradient(SDL_Surface *surface, SDL_Color *start, SDL_Color *end,
+                      int first, int steps)
+{
+    int i;
+    SDL_Color palette[steps];
+
+    for (i = 0; i < steps; i++) {
+        palette[i].r = start->r + (end->r - start->r) * i / (steps - 1);
+        palette[i].g = start->g + (end->g - start->g) * i / (steps - 1);
+        palette[i].b = start->b + (end->b - start->b) * i / (steps - 1);
+    }
+
+    SDL_SetPalette(surface, SDL_LOGPAL|SDL_PHYSPAL, palette, first, steps);
+}
+