start improvements in surface handling

add X surface handler (need to address the speed issues)

svn path=/trunk/libnsfb/; revision=10485

1 files changed, 0 insertions, 660 deletions

diff --git a/src/frontend_sdl.c b/src/frontend_sdl.c
deleted file mode 100644
index cc83a4e..0000000
--- a/src/frontend_sdl.c
+++ /dev/null
@@ -1,660 +0,0 @@
-/*
- * Copyright 2009 Vincent Sanders <vince@simtec.co.uk>
- *
- * This file is part of libnsfb, http://www.netsurf-browser.org/
- * Licenced under the MIT License,
- *                http://www.opensource.org/licenses/mit-license.php
- */
-
-#include <stdbool.h>
-#include <stdlib.h>
-#include <SDL/SDL.h>
-
-#include "libnsfb.h"
-#include "libnsfb_event.h"
-#include "libnsfb_plot.h"
-#include "libnsfb_plot_util.h"
-
-#include "nsfb.h"
-#include "frontend.h"
-#include "plot.h"
-#include "cursor.h"
-
-enum nsfb_key_code_e sdl_nsfb_map[] = {
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_BACKSPACE,
-    NSFB_KEY_TAB,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_CLEAR,
-    NSFB_KEY_RETURN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_PAUSE,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_ESCAPE,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_SPACE,
-    NSFB_KEY_EXCLAIM,
-    NSFB_KEY_QUOTEDBL,
-    NSFB_KEY_HASH,
-    NSFB_KEY_DOLLAR,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_AMPERSAND,
-    NSFB_KEY_QUOTE,
-    NSFB_KEY_LEFTPAREN,
-    NSFB_KEY_RIGHTPAREN,
-    NSFB_KEY_ASTERISK,
-    NSFB_KEY_PLUS,
-    NSFB_KEY_COMMA,
-    NSFB_KEY_MINUS,
-    NSFB_KEY_PERIOD,
-    NSFB_KEY_SLASH,
-    NSFB_KEY_0,
-    NSFB_KEY_1,
-    NSFB_KEY_2,
-    NSFB_KEY_3,
-    NSFB_KEY_4,
-    NSFB_KEY_5,
-    NSFB_KEY_6,
-    NSFB_KEY_7,
-    NSFB_KEY_8,
-    NSFB_KEY_9,
-    NSFB_KEY_COLON,
-    NSFB_KEY_SEMICOLON,
-    NSFB_KEY_LESS,
-    NSFB_KEY_EQUALS,
-    NSFB_KEY_GREATER,
-    NSFB_KEY_QUESTION,
-    NSFB_KEY_AT,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_LEFTBRACKET,
-    NSFB_KEY_BACKSLASH,
-    NSFB_KEY_RIGHTBRACKET,
-    NSFB_KEY_CARET,
-    NSFB_KEY_UNDERSCORE,
-    NSFB_KEY_BACKQUOTE,
-    NSFB_KEY_a,
-    NSFB_KEY_b,
-    NSFB_KEY_c,
-    NSFB_KEY_d,
-    NSFB_KEY_e,
-    NSFB_KEY_f,
-    NSFB_KEY_g,
-    NSFB_KEY_h,
-    NSFB_KEY_i,
-    NSFB_KEY_j,
-    NSFB_KEY_k,
-    NSFB_KEY_l,
-    NSFB_KEY_m,
-    NSFB_KEY_n,
-    NSFB_KEY_o,
-    NSFB_KEY_p,
-    NSFB_KEY_q,
-    NSFB_KEY_r,
-    NSFB_KEY_s,
-    NSFB_KEY_t,
-    NSFB_KEY_u,
-    NSFB_KEY_v,
-    NSFB_KEY_w,
-    NSFB_KEY_x,
-    NSFB_KEY_y,
-    NSFB_KEY_z,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_DELETE,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_KP0,
-    NSFB_KEY_KP1,
-    NSFB_KEY_KP2,
-    NSFB_KEY_KP3,
-    NSFB_KEY_KP4,
-    NSFB_KEY_KP5,
-    NSFB_KEY_KP6,
-    NSFB_KEY_KP7,
-    NSFB_KEY_KP8,
-    NSFB_KEY_KP9,
-    NSFB_KEY_KP_PERIOD,
-    NSFB_KEY_KP_DIVIDE,
-    NSFB_KEY_KP_MULTIPLY,
-    NSFB_KEY_KP_MINUS,
-    NSFB_KEY_KP_PLUS,
-    NSFB_KEY_KP_ENTER,
-    NSFB_KEY_KP_EQUALS,
-    NSFB_KEY_UP,
-    NSFB_KEY_DOWN,
-    NSFB_KEY_RIGHT,
-    NSFB_KEY_LEFT,
-    NSFB_KEY_INSERT,
-    NSFB_KEY_HOME,
-    NSFB_KEY_END,
-    NSFB_KEY_PAGEUP,
-    NSFB_KEY_PAGEDOWN,
-    NSFB_KEY_F1,
-    NSFB_KEY_F2,
-    NSFB_KEY_F3,
-    NSFB_KEY_F4,
-    NSFB_KEY_F5,
-    NSFB_KEY_F6,
-    NSFB_KEY_F7,
-    NSFB_KEY_F8,
-    NSFB_KEY_F9,
-    NSFB_KEY_F10,
-    NSFB_KEY_F11,
-    NSFB_KEY_F12,
-    NSFB_KEY_F13,
-    NSFB_KEY_F14,
-    NSFB_KEY_F15,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_UNKNOWN,
-    NSFB_KEY_NUMLOCK,
-    NSFB_KEY_CAPSLOCK,
-    NSFB_KEY_SCROLLOCK,
-    NSFB_KEY_RSHIFT,
-    NSFB_KEY_LSHIFT,
-    NSFB_KEY_RCTRL,
-    NSFB_KEY_LCTRL,
-    NSFB_KEY_RALT,
-    NSFB_KEY_LALT,
-    NSFB_KEY_RMETA,
-    NSFB_KEY_LMETA,
-    NSFB_KEY_LSUPER,
-    NSFB_KEY_RSUPER,
-    NSFB_KEY_MODE,
-    NSFB_KEY_COMPOSE,
-    NSFB_KEY_HELP,
-    NSFB_KEY_PRINT,
-    NSFB_KEY_SYSREQ,
-    NSFB_KEY_BREAK,
-    NSFB_KEY_MENU,
-    NSFB_KEY_POWER,
-    NSFB_KEY_EURO,
-    NSFB_KEY_UNDO,
-};
-
-
-static void
-set_palette(nsfb_t *nsfb)
-{
-    SDL_Surface *sdl_screen = nsfb->frontend_priv;
-    SDL_Color palette[256];
-    int rloop, gloop, bloop;
-    int loop = 0;
-
-    /* build a linear R:3 G:3 B:2 colour cube palette. */
-    for (rloop = 0; rloop < 8; rloop++) {
-        for (gloop = 0; gloop < 8; gloop++) {
-            for (bloop = 0; bloop < 4; bloop++) {
-                palette[loop].r = (rloop << 5) | (rloop << 2) | (rloop >> 1);
-                palette[loop].g = (gloop << 5) | (gloop << 2) | (gloop >> 1);
-                palette[loop].b = (bloop << 6) | (bloop << 4) | (bloop << 2) | (bloop);
-                nsfb->palette[loop] = palette[loop].r |
-                                      palette[loop].g << 8 |
-                                      palette[loop].b << 16;
-                loop++;
-            }
-        }
-    }
-
-    /* Set palette */
-    SDL_SetColors(sdl_screen, palette, 0, 256);
-
-}
-
-static bool 
-sdlcopy(nsfb_t *nsfb, nsfb_bbox_t *srcbox, nsfb_bbox_t *dstbox)
-{
-    SDL_Rect src;
-    SDL_Rect dst;
-    SDL_Surface *sdl_screen = nsfb->frontend_priv;
-    nsfb_bbox_t allbox;
-    struct nsfb_cursor_s *cursor = nsfb->cursor;
-
-    nsfb_plot_add_rect(srcbox, dstbox, &allbox);
-
-    /* clear the cursor if its within the region to be altered */
-    if ((cursor != NULL) &&
-        (cursor->plotted == true) &&
-        (nsfb_plot_bbox_intersect(&allbox, &cursor->loc))) {
-        nsfb_cursor_clear(nsfb, cursor);
-    }
-
-    src.x = srcbox->x0;
-    src.y = srcbox->y0;
-    src.w = srcbox->x1 - srcbox->x0;
-    src.h = srcbox->y1 - srcbox->y0;
- 
-    dst.x = dstbox->x0;
-    dst.y = dstbox->y0;
-    dst.w = dstbox->x1 - dstbox->x0;
-    dst.h = dstbox->y1 - dstbox->y0;
- 
-    SDL_BlitSurface(sdl_screen, &src, sdl_screen , &dst);
-
-    if ((cursor != NULL) && 
-        (cursor->plotted == false)) {
-        nsfb_cursor_plot(nsfb, cursor);
-    }
-
-    SDL_UpdateRect(sdl_screen, dst.x, dst.y, dst.w, dst.h);
-
-    return true;
-
-}
-
-static int sdl_set_geometry(nsfb_t *nsfb, int width, int height, int bpp)
-{
-    if (nsfb->frontend_priv != NULL)
-        return -1; /* if were already initialised fail */
-
-    nsfb->width = width;
-    nsfb->height = height;
-    nsfb->bpp = bpp;
-
-    /* select default sw plotters for bpp */
-    select_plotters(nsfb);
-
-    nsfb->plotter_fns->copy = sdlcopy;
-
-    return 0;
-}
-
-static int sdl_initialise(nsfb_t *nsfb)
-{
-    SDL_Surface *sdl_screen;
-
-    if (nsfb->frontend_priv != NULL)
-        return -1;
-
-    /* sanity checked depth. */
-    if ((nsfb->bpp != 32) && (nsfb->bpp != 16) && (nsfb->bpp != 8))
-        return -1;
-
-    /* initialise SDL library */
-    if (SDL_Init(SDL_INIT_VIDEO) < 0 ) {
-        fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
-        return -1;
-    }
-    atexit(SDL_Quit);
-
-    sdl_screen = SDL_SetVideoMode(nsfb->width,
-                                  nsfb->height,
-                                  nsfb->bpp,
-                                  SDL_SWSURFACE);
-
-    if (sdl_screen == NULL ) {
-        fprintf(stderr, "Unable to set video: %s\n", SDL_GetError());
-        return -1;
-    }
-
-    nsfb->frontend_priv = sdl_screen;
-
-    if (nsfb->bpp == 8)
-        set_palette(nsfb);
-
-    nsfb->ptr = sdl_screen->pixels;
-    nsfb->linelen = sdl_screen->pitch;
-
-    SDL_ShowCursor(SDL_DISABLE);
-    SDL_EnableKeyRepeat(300, 50);
-
-    return 0;
-}
-
-static int sdl_finalise(nsfb_t *nsfb)
-{
-    nsfb=nsfb;
-    return 0;
-}
-
-static bool sdl_input(nsfb_t *nsfb, nsfb_event_t *event, int timeout)
-{
-    int got_event;
-    SDL_Event sdlevent;
-
-    nsfb = nsfb; /* unused */
-
-    if (timeout < 0)
-        got_event = SDL_WaitEvent(&sdlevent);
-    else
-        got_event = SDL_PollEvent(&sdlevent);
-
-    /* Do nothing if there was no event */
-    if (got_event == 0)
-        return false;
-
-    event->type = NSFB_EVENT_NONE;
-
-    switch (sdlevent.type) {
-        case SDL_KEYDOWN:
-            event->type = NSFB_EVENT_KEY_DOWN;
-            event->value.keycode = sdl_nsfb_map[sdlevent.key.keysym.sym];
-            break;
-
-        case SDL_KEYUP:
-            event->type = NSFB_EVENT_KEY_UP;
-            event->value.keycode = sdl_nsfb_map[sdlevent.key.keysym.sym];
-            break;
-
-        case SDL_MOUSEBUTTONDOWN:
-            event->type = NSFB_EVENT_KEY_DOWN;
-
-            switch (sdlevent.button.button) {
-
-            case SDL_BUTTON_LEFT:
-                event->value.keycode = NSFB_KEY_MOUSE_1;
-                break;
-
-            case SDL_BUTTON_MIDDLE:
-                event->value.keycode = NSFB_KEY_MOUSE_2;
-                break;
-
-            case SDL_BUTTON_RIGHT:
-                event->value.keycode = NSFB_KEY_MOUSE_3;
-                break;
-
-            case SDL_BUTTON_WHEELUP:
-                event->value.keycode = NSFB_KEY_MOUSE_4;
-                break;
-
-            case SDL_BUTTON_WHEELDOWN:
-                event->value.keycode = NSFB_KEY_MOUSE_5;
-                break;
-            }
-            break;
-
-        case SDL_MOUSEBUTTONUP:
-            event->type = NSFB_EVENT_KEY_UP;
-
-            switch (sdlevent.button.button) {
-
-            case SDL_BUTTON_LEFT:
-                event->value.keycode = NSFB_KEY_MOUSE_1;
-                break;
-
-            case SDL_BUTTON_MIDDLE:
-                event->value.keycode = NSFB_KEY_MOUSE_2;
-                break;
-
-            case SDL_BUTTON_RIGHT:
-                event->value.keycode = NSFB_KEY_MOUSE_3;
-                break;
-
-            case SDL_BUTTON_WHEELUP:
-                event->value.keycode = NSFB_KEY_MOUSE_4;
-                break;
-
-            case SDL_BUTTON_WHEELDOWN:
-                event->value.keycode = NSFB_KEY_MOUSE_5;
-                break;
-            }
-            break;
-
-        case SDL_MOUSEMOTION:
-            event->type = NSFB_EVENT_MOVE_ABSOLUTE;
-            event->value.vector.x = sdlevent.motion.x;
-            event->value.vector.y = sdlevent.motion.y;
-            event->value.vector.z = 0;
-            break;
-
-        case SDL_QUIT:
-            event->type = NSFB_EVENT_CONTROL;
-            event->value.controlcode = NSFB_CONTROL_QUIT;
-            break;
-
-    }
-
-    return true;
-}
-
-static int sdl_claim(nsfb_t *nsfb, nsfb_bbox_t *box)
-{
-    struct nsfb_cursor_s *cursor = nsfb->cursor;
-
-    if ((cursor != NULL) &&
-        (cursor->plotted == true) &&
-        (nsfb_plot_bbox_intersect(box, &cursor->loc))) {
-        nsfb_cursor_clear(nsfb, cursor);
-    }
-    return 0;
-}
-
-static int
-sdl_cursor(nsfb_t *nsfb, struct nsfb_cursor_s *cursor)
-{
-    SDL_Surface *sdl_screen = nsfb->frontend_priv;
-    nsfb_bbox_t redraw;
-    nsfb_bbox_t fbarea;
-
-    if ((cursor != NULL) && (cursor->plotted == true)) {
-
-        nsfb_plot_add_rect(&cursor->savloc, &cursor->loc, &redraw);
-
-        /* screen area */
-        fbarea.x0 = 0;
-        fbarea.y0 = 0;
-        fbarea.x1 = nsfb->width;
-        fbarea.y1 = nsfb->height;
-
-        nsfb_plot_clip(&fbarea, &redraw);
-
-        nsfb_cursor_clear(nsfb, cursor);
-
-        nsfb_cursor_plot(nsfb, cursor);
-
-        SDL_UpdateRect(sdl_screen,
-                       redraw.x0,
-                       redraw.y0,
-                       redraw.x1 - redraw.x0,
-                       redraw.y1 - redraw.y0);
-
-
-    }
-    return true;
-}
-
-
-static int sdl_update(nsfb_t *nsfb, nsfb_bbox_t *box)
-{
-    SDL_Surface *sdl_screen = nsfb->frontend_priv;
-    struct nsfb_cursor_s *cursor = nsfb->cursor;
-
-    if ((cursor != NULL) &&
-	(cursor->plotted == false)) {
-        nsfb_cursor_plot(nsfb, cursor);
-    }
-
-    SDL_UpdateRect(sdl_screen,
-                   box->x0,
-                   box->y0,
-                   box->x1 - box->x0,
-                   box->y1 - box->y0);
-
-    return 0;
-}
-
-const nsfb_frontend_rtns_t sdl_rtns = {
-    .initialise = sdl_initialise,
-    .finalise = sdl_finalise,
-    .input = sdl_input,
-    .claim = sdl_claim,
-    .update = sdl_update,
-    .cursor = sdl_cursor,
-    .geometry = sdl_set_geometry,
-};
-
-NSFB_FRONTEND_DEF(sdl, NSFB_FRONTEND_SDL, &sdl_rtns)