Initial multi screen support by Kévin Ferrare (Patch #1318081)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7666 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 216 insertions, 0 deletions

diff --git a/apps/gui/splash.c b/apps/gui/splash.c
new file mode 100644
index 0000000..a3cbb19
--- /dev/null
+++ b/apps/gui/splash.c
@@ -0,0 +1,216 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) Daniel Stenberg (2002), Kévin FERRARE (2005)
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "stdarg.h"
+#include "string.h"
+#include "stdio.h"
+#include "kernel.h"
+#include "screen_access.h"
+
+
+#ifdef HAVE_LCD_BITMAP
+
+#define SPACE 3 /* pixels between words */
+#define MAXLETTERS 128 /* 16*8 */
+#define MAXLINES 10
+
+#else
+
+#define SPACE 1 /* one letter space */
+#define MAXLETTERS 22 /* 11 * 2 */
+#define MAXLINES 2
+
+#endif
+
+
+void internal_splash(struct screen * screen,
+                    bool center,  const char *fmt, va_list ap)
+{
+    char *next;
+    char *store=NULL;
+    int x=0;
+    int y=0;
+    int w, h;
+    unsigned char splash_buf[MAXLETTERS];
+    unsigned char widths[MAXLINES];
+    int line=0;
+    bool first=true;
+#ifdef HAVE_LCD_BITMAP
+    int maxw=0;
+#endif
+
+#ifdef HAVE_LCD_CHARCELLS
+    screen->double_height (false);
+#endif
+    vsnprintf( splash_buf, sizeof(splash_buf), fmt, ap );
+
+    if(center) {
+        /* first a pass to measure sizes */
+        next = strtok_r(splash_buf, " ", &store);
+        while (next) {
+#ifdef HAVE_LCD_BITMAP
+            screen->getstringsize(next, &w, &h);
+#else
+            w = strlen(next);
+            h = 1; /* store height in characters */
+#endif
+            if(!first) {
+                if(x+w> screen->width) {
+                    /* Too wide, wrap */
+                    y+=h;
+                    line++;
+                    if((y > (screen->height-h)) || (line > screen->nb_lines))
+                        /* STOP */
+                        break;
+                    x=0;
+                    first=true;
+                }
+            }
+            else
+                first = false;
+
+            /* think of it as if the text was written here at position x,y
+               being w pixels/chars wide and h high */
+
+            x += w+SPACE;
+            widths[line]=x-SPACE; /* don't count the trailing space */
+#ifdef HAVE_LCD_BITMAP
+            /* store the widest line */
+            if(widths[line]>maxw)
+                maxw = widths[line];
+#endif
+            next = strtok_r(NULL, " ", &store);
+        }
+
+#ifdef HAVE_LCD_BITMAP
+        /* Start displaying the message at position y. The reason for the
+           added h here is that it isn't added until the end of lines in the
+           loop above and we always break the loop in the middle of a line. */
+        y = (screen->height - (y+h) )/2;
+#else
+        y = 0; /* vertical center on 2 lines would be silly */
+#endif
+        first=true;
+
+        /* Now recreate the string again since the strtok_r() above has ruined
+           the one we already have! Here's room for improvements! */
+        vsnprintf( splash_buf, sizeof(splash_buf), fmt, ap );
+    }
+    va_end( ap );
+
+    if(center)
+    {
+        x = (screen->width-widths[0])/2;
+        if(x < 0)
+            x = 0;
+    }
+
+#ifdef HAVE_LCD_BITMAP
+    /* If we center the display, then just clear the box we need and put
+       a nice little frame and put the text in there! */
+    if(center && (y > 2)) {
+        int xx = (screen->width-maxw)/2 - 2;
+        /* The new graphics routines handle clipping, so no need to check */
+#if LCD_DEPTH > 1
+#ifdef HAVE_LCD_COLOR
+        screen->set_background((struct rgb){LCD_MAX_RED-1, LCD_MAX_GREEN-1,
+                                            LCD_MAX_BLUE-1});
+#else
+        if(screen->depth>1)
+            screen->set_background(LCD_MAX_LEVEL-1);
+#endif
+#endif
+        screen->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
+        screen->fillrect(xx, y-2, maxw+4, screen->height-y*2+4);
+        screen->set_drawmode(DRMODE_SOLID);
+        screen->drawrect(xx, y-2, maxw+4, screen->height-y*2+4);
+    }
+    else
+#endif
+        screen->clear_display();
+    line=0;
+    next = strtok_r(splash_buf, " ", &store);
+    while (next) {
+#ifdef HAVE_LCD_BITMAP
+        screen->getstringsize(next, &w, &h);
+#else
+        w = strlen(next);
+        h = 1;
+#endif
+        if(!first) {
+            if(x+w> screen->width) {
+                /* too wide */
+                y+=h;
+                line++; /* goto next line */
+                first=true;
+                if(y > (screen->height-h))
+                    /* STOP */
+                    break;
+                if(center) {
+                    x = (screen->width-widths[line])/2;
+                    if(x < 0)
+                       x = 0;
+                }
+                else
+                    x=0;
+            }
+        }
+        else
+            first=false;
+#ifdef HAVE_LCD_BITMAP
+        screen->putsxy(x, y, next);
+#else
+        screen->puts(x, y, next);
+#endif
+        x += w+SPACE; /*  pixels space! */
+        next = strtok_r(NULL, " ", &store);
+    }
+
+#if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH > 1)
+    if(screen->depth > 1)
+        screen->set_background(LCD_WHITE);
+#endif
+#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR)
+    screen->update();
+#endif
+}
+
+void gui_splash(struct screen * screen, int ticks,
+                    bool center,  const char *fmt, ...)
+{
+    va_list ap;
+    va_start( ap, fmt );
+    internal_splash(screen, center, fmt, ap);
+    va_end( ap );
+
+    if(ticks)
+        sleep(ticks);
+}
+
+void gui_syncsplash(int ticks, bool center,  const char *fmt, ...)
+{
+    va_list ap;
+    int i;
+    va_start( ap, fmt );
+    for(i=0;i<NB_SCREENS;++i)
+        internal_splash(&(screens[i]), center, fmt, ap);
+    va_end( ap );
+
+    if(ticks)
+        sleep(ticks);
+}