Extract usb_screen logic out of screens.c into apps/gui/usb_screen.c

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23273 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 312 insertions, 0 deletions

diff --git a/apps/gui/usb_screen.c b/apps/gui/usb_screen.c
new file mode 100644
index 0000000000..6e7c24920f
--- /dev/null
+++ b/apps/gui/usb_screen.c
@@ -0,0 +1,312 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: screens.c 23269 2009-10-19 20:06:51Z tomers $
+ *
+ * Copyright (C) 2002 Björn Stenberg
+ *
+ * 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 "action.h"
+#ifdef HAVE_REMOTE_LCD
+#include "lcd-remote.h"
+#endif
+#include "lang.h"
+#include "usb.h"
+#if defined(HAVE_USBSTACK)
+#include "usb_core.h"
+#ifdef USB_ENABLE_HID
+#include "usb_keymaps.h"
+#endif
+#endif
+#include "settings.h"
+#include "appevents.h"
+
+#ifdef HAVE_LCD_BITMAP
+#include "bitmaps/usblogo.h"
+#endif
+
+#ifdef HAVE_REMOTE_LCD
+#include "bitmaps/remote_usblogo.h"
+#endif
+
+#ifndef SIMULATOR
+
+#ifdef USB_ENABLE_HID
+int usb_keypad_mode;
+#endif
+
+static int handle_usb_events(void)
+{
+#if (CONFIG_STORAGE & STORAGE_MMC)
+    int next_update=0;
+#endif /* STORAGE_MMC */
+
+    /* Don't return until we get SYS_USB_DISCONNECTED or SYS_TIMEOUT */
+    while(1)
+    {
+        int button;
+#ifdef USB_ENABLE_HID
+        if (usb_core_driver_enabled(USB_DRIVER_HID))
+        {
+            button = get_hid_usb_action();
+
+            /* On mode change, we need to refresh the screen */
+            if (button == ACTION_USB_HID_MODE_SWITCH_NEXT ||
+                    button == ACTION_USB_HID_MODE_SWITCH_PREV)
+            {
+                break;
+            }
+        }
+        else
+#endif
+        {
+            button = button_get_w_tmo(HZ/2);
+            /* hid emits the event in get_action */
+            send_event(GUI_EVENT_ACTIONUPDATE, NULL);
+        }
+
+        switch(button)
+        {
+            case SYS_USB_DISCONNECTED:
+                usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
+                return 1;
+            case SYS_TIMEOUT:
+                break;
+        }
+
+#if (CONFIG_STORAGE & STORAGE_MMC) /* USB-MMC bridge can report activity */
+        if(TIME_AFTER(current_tick,next_update))
+        {
+            if(usb_inserted()) {
+                led(mmc_usb_active(HZ));
+            }
+            next_update=current_tick+HZ/2;
+        }
+#endif /* STORAGE_MMC */
+    }
+
+    return 0;
+}
+#endif
+
+#ifdef USB_NONE
+void gui_usb_screen_run(void)
+{
+}
+#else
+#define MODE_NAME_LEN 32
+
+struct usb_screen_vps_t
+{
+    struct viewport parent;
+#ifdef HAVE_LCD_BITMAP
+    struct viewport logo;
+#ifdef USB_ENABLE_HID
+    struct viewport title;
+#endif
+#endif
+};
+
+#ifdef HAVE_LCD_BITMAP
+static void usb_screen_fix_viewports(struct screen *screen,
+        struct usb_screen_vps_t *usb_screen_vps)
+{
+    int logo_width, logo_height;
+    struct viewport *parent = &usb_screen_vps->parent;
+    struct viewport *logo = &usb_screen_vps->logo;
+
+#ifdef HAVE_REMOTE_LCD
+    if (screen->screen_type == SCREEN_REMOTE)
+    {
+        logo_width = BMPWIDTH_remote_usblogo;
+        logo_height = BMPHEIGHT_remote_usblogo;
+    }
+    else
+#endif
+    {
+        logo_width = BMPWIDTH_usblogo;
+        logo_height = BMPHEIGHT_usblogo;
+    }
+
+    viewport_set_defaults(parent, screen->screen_type);
+    if (parent->width < logo_width || parent->height < logo_height)
+        viewport_set_fullscreen(parent, screen->screen_type);
+
+    *logo = *parent;
+    logo->x = parent->width - logo_width;
+    logo->y = (parent->height - logo_height) / 2;
+    logo->width = logo_width;
+    logo->height = logo_height;
+
+#ifdef USB_ENABLE_HID
+    struct viewport *title = &usb_screen_vps->title;
+    int char_height, nb_lines;
+
+    /* nb_lines only returns the number of fully visible lines, small screens
+       or really large fonts could cause problems with the calculation below.
+       */
+    nb_lines = viewport_get_nb_lines(parent);
+    if (nb_lines == 0)
+        nb_lines++;
+
+    char_height = parent->height/nb_lines;
+
+    *title = *parent;
+    title->y = logo->y + logo->height + char_height;
+#endif
+}
+#endif
+
+static void usb_screens_draw(struct usb_screen_vps_t *usb_screen_vps_ar)
+{
+    int i;
+    int usb_bars = VP_SB_ALLSCREENS; /* force statusbars */
+
+    FOR_NB_SCREENS(i)
+    {
+        struct screen *screen = &screens[i];
+
+        struct usb_screen_vps_t *usb_screen_vps = &usb_screen_vps_ar[i];
+        struct viewport *parent = &usb_screen_vps->parent;
+#ifdef HAVE_LCD_BITMAP
+        struct viewport *logo = &usb_screen_vps->logo;
+#endif
+
+        screen->set_viewport(parent);
+        screen->backdrop_show(BACKDROP_MAIN);
+        screen->backlight_on();
+        screen->clear_viewport();
+
+#ifdef HAVE_LCD_BITMAP
+        screen->set_viewport(logo);
+#ifdef HAVE_REMOTE_LCD
+        if (i == SCREEN_REMOTE)
+        {
+            screen->bitmap(remote_usblogo, 0, 0, logo->width,
+                logo->height);
+        }
+        else
+#endif
+        {
+            screen->transparent_bitmap(usblogo, 0, 0, logo->width,
+                logo->height);
+#ifdef USB_ENABLE_HID
+            screen->set_viewport(&usb_screen_vps->title);
+            usb_screen_vps->title.flags |= VP_FLAG_ALIGN_CENTER;
+            screen->puts_scroll(0, 0, str(keypad_mode_name_get()));
+#endif /* USB_ENABLE_HID */
+        }
+        screen->set_viewport(parent);
+
+#else /* HAVE_LCD_BITMAP */
+        screen->double_height(false);
+        screen->puts_scroll(0, 0, "[USB Mode]");
+        status_set_param(false);
+        status_set_audio(false);
+        status_set_usb(true);
+#endif /* HAVE_LCD_BITMAP */
+
+        screen->update_viewport();
+        screen->set_viewport(NULL);
+
+        /* force statusbar by ignoring the setting */
+        usb_bars |= VP_SB_IGNORE_SETTING(i);
+    }
+
+    viewportmanager_set_statusbar(usb_bars);
+}
+
+void gui_usb_screen_run(void)
+{
+    int i;
+    int old_bars  = viewportmanager_get_statusbar();
+    struct usb_screen_vps_t usb_screen_vps_ar[NB_SCREENS];
+#if defined HAVE_TOUCHSCREEN
+    enum touchscreen_mode old_mode = touchscreen_get_mode();
+
+    /* TODO: Paint buttons on screens OR switch to point mode and use
+     * touchscreen as a touchpad to move the host's mouse cursor */
+    touchscreen_set_mode(TOUCHSCREEN_BUTTON);
+#endif
+
+#ifndef SIMULATOR
+    usb_acknowledge(SYS_USB_CONNECTED_ACK);
+#endif
+
+#ifdef USB_ENABLE_HID
+    usb_keypad_mode = global_settings.usb_keypad_mode;
+#endif
+
+    FOR_NB_SCREENS(i)
+    {
+        struct screen *screen = &screens[i];
+
+        screen->set_viewport(NULL);
+#ifdef HAVE_LCD_BITMAP
+        usb_screen_fix_viewports(screen, &usb_screen_vps_ar[i]);
+#endif
+    }
+
+    while (1)
+    {
+        usb_screens_draw(usb_screen_vps_ar);
+#ifdef SIMULATOR
+        if (button_get_w_tmo(HZ/2))
+            break;
+        send_event(GUI_EVENT_ACTIONUPDATE, NULL);
+#else
+        if (handle_usb_events())
+            break;
+#endif /* SIMULATOR */
+    }
+
+    FOR_NB_SCREENS(i)
+    {
+        const struct viewport* vp = NULL;
+
+#if defined(HAVE_LCD_BITMAP) && defined(USB_ENABLE_HID)
+        vp = &usb_screen_vps_ar[i].title;
+#elif !defined(HAVE_LCD_BITMAP)
+        vp = &usb_screen_vps_ar[i].parent;
+#endif
+        if (vp)
+            screens[i].scroll_stop(vp);
+    }
+#ifdef USB_ENABLE_HID
+    if (global_settings.usb_keypad_mode != usb_keypad_mode)
+    {
+        global_settings.usb_keypad_mode = usb_keypad_mode;
+        settings_save();
+    }
+#endif
+
+#ifdef HAVE_TOUCHSCREEN
+    touchscreen_set_mode(old_mode);
+#endif
+
+#ifdef HAVE_LCD_CHARCELLS
+    status_set_usb(false);
+#endif /* HAVE_LCD_CHARCELLS */
+    FOR_NB_SCREENS(i)
+    {
+        screens[i].backlight_on();
+    }
+    viewportmanager_set_statusbar(old_bars);
+    send_event(GUI_EVENT_REFRESH, NULL);
+
+}
+#endif /* !defined(USB_NONE) */
+