/*
        Copyright 1999, Be Incorporated.   All Rights Reserved.
        This file may be used under the terms of the Be Sample Code License.

        Other authors:
        Rudolf Cornelissen 4/2003-11/2004
*/

#define MODULE_BIT 0x20000000

#include "acc_std.h"

status_t SET_CURSOR_SHAPE(uint16 width, uint16 height, uint16 hot_x, uint16 hot_y, uint8 *andMask, uint8 *xorMask) 
{
        LOG(4,("SET_CURSOR_SHAPE: width %d, height %d, hot_x %d, hot_y %d\n",
                width, height, hot_x, hot_y));

        if ((width != 16) || (height != 16))
        {
                return B_ERROR;
        }
        else if ((hot_x >= width) || (hot_y >= height))
        {
                return B_ERROR;
        }
        else
        {
                nm_crtc_cursor_define(andMask,xorMask);

                /* Update cursor variables appropriately. */
                si->cursor.width = width;
                si->cursor.height = height;
                si->cursor.hot_x = hot_x;
                si->cursor.hot_y = hot_y;
        }

        return B_OK;
}

/* Move the cursor to the specified position on the desktop, taking account of virtual/dual issues */
void MOVE_CURSOR(uint16 x, uint16 y) 
{
        uint16 hds = si->dm.h_display_start;    /* the current horizontal starting pixel */
        uint16 vds = si->dm.v_display_start;    /* the current vertical starting line */
        uint16 h_adjust;   
        uint16 h_display = si->dm.timing.h_display; /* local copy needed for flatpanel */
        uint16 v_display = si->dm.timing.v_display; /* local copy needed for flatpanel */

        /* clamp cursor to display */
        if (x >= si->dm.virtual_width) x = si->dm.virtual_width - 1;
        if (y >= si->dm.virtual_height) y = si->dm.virtual_height - 1;

        /* store, for our info */
        si->cursor.x = x;
        si->cursor.y = y;

        /* setting up minimum amount to scroll not needed:
         * Neomagic cards can always do pixelprecise panning */
        h_adjust = 0x00;

        /* if internal panel is active correct visible screensize! */
        if (nm_general_output_read() & 0x02)
        {
                if (h_display > si->ps.panel_width) h_display = si->ps.panel_width;
                if (v_display > si->ps.panel_height) v_display = si->ps.panel_height;
        }

        /* adjust h/v_display_start to move cursor onto screen */
        if (x >= (h_display + hds))
        {
                hds = ((x - h_display) + 1 + h_adjust) & ~h_adjust;
                /* make sure we stay within the display! */
                if ((hds + h_display) > si->dm.virtual_width)
                        hds -= (h_adjust + 1);
        }
        else if (x < hds)
                hds = x & ~h_adjust;

        if (y >= (v_display + vds))
                vds = y - v_display + 1;
        else if (y < vds)
                vds = y;

        /* reposition the desktop _and_ the overlay on the display if required */
        if ((hds!=si->dm.h_display_start) || (vds!=si->dm.v_display_start)) 
        {
                MOVE_DISPLAY(hds,vds);
                nm_bes_move_overlay();
        }

        /* put cursor in correct physical position */
        if (x > (hds + si->cursor.hot_x)) x -= hds + si->cursor.hot_x;
        else x = 0;
        if (y > (vds + si->cursor.hot_y)) y -= vds + si->cursor.hot_y;
        else y = 0;

        /* position the cursor on the display */
        nm_crtc_cursor_position(x,y);
}

void SHOW_CURSOR(bool is_visible) 
{
        /* record for our info */
        si->cursor.is_visible = is_visible;

        if (is_visible)
                nm_crtc_cursor_show();
        else
                nm_crtc_cursor_hide();
}