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Line 269... Line 269...
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            vport->style.bg_color);
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            vport->style.bg_color);
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    }
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    }
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}
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}
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/** Clear viewport
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/** Clear viewport.
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 *
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 *
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 * @param vport Viewport to clear
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 * @param vport Viewport to clear
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 *
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 *
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 */
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 */
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static void vport_clear(viewport_t *vport)
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static void vport_clear(viewport_t *vport)
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{
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{
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    memset(vport->backbuf, 0, vport->bbsize);
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    memset(vport->backbuf, 0, vport->bbsize);
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    vport_redraw(vport);
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    vport_redraw(vport);
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}
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}
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/** Scroll viewport by given number of lines
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/** Scroll viewport by the specified number of lines.
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 *
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 *
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 * @param vport Viewport to scroll
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 * @param vport Viewport to scroll
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 * @param lines Number of lines to scroll
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 * @param lines Number of lines to scroll
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 *
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 *
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 */
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 */
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static void vport_scroll(viewport_t *vport, int lines)
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static void vport_scroll(viewport_t *vport, int lines)
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{
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{
- 
 
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    /*
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    unsigned int row, col;
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     * Scroll backbuffer.
- 
 
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     */
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    if (lines > 0) {
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    if (lines > 0) {
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        memcpy(vport->backbuf, vport->backbuf + vport->cols * lines,
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        memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
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            vport->cols * (vport->rows - lines));
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            vport->cols * (vport->rows - lines));
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        memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
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        memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
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            0, vport->cols * lines);
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            0, vport->cols * lines);
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    } else {
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    } else {
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        memcpy(vport->backbuf - vport->cols * lines, vport->backbuf,
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        memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
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            vport->cols * (vport->rows + lines));
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            vport->cols * (vport->rows + lines));
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        memset(vport->backbuf, 0, - vport->cols * lines);
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        memset(vport->backbuf, 0, - vport->cols * lines);
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    }
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    }
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- 
 
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    /*
- 
 
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     * Scroll pixels.
- 
 
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     */
- 
 
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- 
 
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    unsigned int dist, height, alines;
- 
 
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    unsigned int y, ry;
- 
 
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    uint8_t *sp, *dp;
- 
 
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- 
 
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    alines = lines > 0 ? lines : -lines;
- 
 
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    dist = alines * FONT_SCANLINES;
- 
 
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    height = (vport->rows - alines) * FONT_SCANLINES;
- 
 
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- 
 
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    if (lines > 0) {
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    for (row = 0; row < vport->rows; row++) {
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        dp = &screen.fb_addr[FB_POS(vport->x, vport->y + 0)];
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        for (col = 0; col < vport->cols; col++) {
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        sp = &screen.fb_addr[FB_POS(vport->x, vport->y + dist)];
- 
 
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        ry = height;
- 
 
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    } else {
- 
 
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        dp = &screen.fb_addr[FB_POS(vport->x, vport->y + dist)];
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            draw_glyph(vport, false, col, row);
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        sp = &screen.fb_addr[FB_POS(vport->x, vport->y + 0)];
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        }
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        ry = 0;
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    }
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    }
- 
 
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- 
 
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    /* Move pixels line by line. */
- 
 
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    for (y = 0; y < height; y++) {
- 
 
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        memcpy(dp, sp, vport->cols * FONT_WIDTH
- 
 
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            * screen.pixelbytes);
- 
 
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- 
 
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        sp += screen.scanline;
- 
 
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        dp += screen.scanline;
- 
 
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    }
- 
 
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- 
 
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    /* Fill emptied area with background color. */
- 
 
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    draw_filled_rect(vport->x, vport->y + ry,
- 
 
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        vport->x + COL2X(vport->cols), vport->y + ry + dist,
- 
 
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        vport->style.bg_color);
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}
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}
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/** Render glyphs
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/** Render glyphs
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 *
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 *
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 * Convert glyphs from device independent font
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 * Convert glyphs from device independent font