Commit yaboot 1.3.0

[yaboot.git] / second / gui / effects.c

diff --git a/second/gui/effects.c b/second/gui/effects.c
new file mode 100644 (file)
index 0000000..afcd374
--- /dev/null
+++ b/second/gui/effects.c
@@ -0,0 +1,95 @@
+/* effects.c */
+/* Adds splash screen and status bar effects for graphical yaboot */
+
+#include "file.h"
+#include "yaboot.h"
+#include "stdlib.h"
+
+#define SB_XSTART  170
+#define SB_XEND    472
+#define SB_YSTART  402
+
+unsigned char bar_grad[] = { 228, 237, 246, 254, 207, 254, 246, 237, 228, 206 };
+
+int scrOpen(void);
+void scrSetEntireColorMap(unsigned char *);
+void scrClear(unsigned char);
+void pcxDisplay(unsigned char *, unsigned int);
+void scrFadeColorMap(unsigned char *, unsigned char *, int);
+unsigned char *pcxColormap(unsigned char *, int);
+void scrPutPixel(int, int, unsigned char);
+
+void fxDisplaySplash(struct boot_fspec_t *filespec)
+{
+  void              *gfx_file;
+  int                gfx_len;
+  unsigned char     *grey_map;
+  int                start_time;
+  struct boot_file_t file;
+  int                result;
+  static int         been_here = 0;
+
+  if(!been_here)
+  {
+     been_here = 1;
+     gfx_file = (void *) malloc(1024 * 512);
+     if (gfx_file == NULL) {
+       prom_printf("malloc failed in fxDisplaySplash()\n");
+       return;
+     }
+
+     scrOpen();
+
+     result = open_file(filespec, &file);
+
+     if(result != FILE_ERR_OK)
+     {
+        prom_printf("Error loading splash screen\n");
+        return;
+     }
+
+     gfx_len = file.fs->read(&file, 1024 * 512 - 765, gfx_file);
+     file.fs->close(&file);
+     grey_map = gfx_file + gfx_len;
+     memset(grey_map, 0/*128*/, 765);
+  }
+
+  scrSetEntireColorMap(grey_map);
+  scrClear(0);
+
+  start_time = prom_getms();
+  while(prom_getms() < start_time + 2000);
+
+  pcxDisplay(gfx_file, gfx_len);
+  scrFadeColorMap(grey_map, pcxColormap( gfx_file, gfx_len ), 2);
+}
+
+
+void fxUpdateSB(unsigned number, unsigned total)
+{
+  int x, y;
+
+  for(x = SB_XSTART; x < SB_XSTART + (SB_XEND - SB_XSTART) * number / total; ++x)
+  {
+     for(y = 0; y < 10; ++y)
+        scrPutPixel(x, SB_YSTART + y, bar_grad[y]);
+  }
+}
+
+
+#define BLOCK_INDEX (1024 * 64)
+
+int fxReadImage(struct boot_file_t *file, unsigned int filesize, void *base)
+{
+  unsigned int count, result = 0;
+
+  for(count = 0; count < filesize; count += result)
+  {
+     result = ((filesize - count) < BLOCK_INDEX) ? (filesize - count) : BLOCK_INDEX;
+     if ((result = file->fs->read(file, result, base + count)) != BLOCK_INDEX)
+       break;
+     fxUpdateSB(count + result, filesize);
+  }
+  fxUpdateSB(count + result, filesize);
+  return(count + result);
+}