/*
   Copyright (C) 2009 Red Hat, Inc.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/

#include "common.h"
#include <stdint.h>
#include "red_gl_canvas.h"
#include "utils.h"
#include "debug.h"
#include "region.h"
#include "red_pixmap_gl.h"
#include <GL/glx.h>

GCanvas::GCanvas(int width, int height, uint32_t format, RedWindow *win,
                 RenderType rendertype,
                 PixmapCache& pixmap_cache, PaletteCache& palette_cache,
                 GlzDecoderWindow &glz_decoder_window, CSurfaces &csurfaces)
    : Canvas(pixmap_cache, palette_cache, glz_decoder_window, csurfaces)
    , _pixmap (0)
    , _textures_lost (false)
{
    _pixmap = new RedPixmapGL(width, height,
                              RedDrawable::format_from_surface(format),
                              true, win, rendertype);
    if (!(_canvas = gl_canvas_create(width, height,
                                     SPICE_SURFACE_FMT_DEPTH(format),
                                     &pixmap_cache.base,
                                     &palette_cache.base,
                                     &csurfaces.base,
                                     &glz_decoder(),
                                     &jpeg_decoder(),
                                     &zlib_decoder()))) {
        THROW("create canvas failed");
    }
}

GCanvas::~GCanvas()
{
    gl_canvas_set_textures_lost (_canvas, (int)_textures_lost);
    _canvas->ops->destroy(_canvas);
    _canvas = NULL;
    delete _pixmap;
    _pixmap = NULL;
}

void GCanvas::copy_pixels(const QRegion& region, RedDrawable& dest_dc)
{
    pixman_box32_t *rects;
    int num_rects;

    rects = pixman_region32_rectangles((pixman_region32_t *)&region, &num_rects);
    for (int i = 0; i < num_rects; i++) {
        SpiceRect r;

        r.left = rects[i].x1;
        r.top = rects[i].y1;
        r.right = rects[i].x2;
        r.bottom = rects[i].y2;

        dest_dc.copy_pixels(*_pixmap, r.left, r.top, r);
    }
}

void GCanvas::copy_pixels(const QRegion& region, RedDrawable* dest_dc, const PixmapHeader* pixmap)
{
    copy_pixels(region, *dest_dc);
}

void GCanvas::touched_bbox(const SpiceRect *bbox)
{
    _pixmap->update_texture(bbox);
}

CanvasType GCanvas::get_pixmap_type()
{
    return CANVAS_TYPE_GL;
}

void GCanvas::textures_lost()
{
    _textures_lost = true;
    _pixmap->textures_lost();
}

void GCanvas::touch_context()
{
    _pixmap->touch_context();
}

void GCanvas::pre_gl_copy()
{
    _pixmap->pre_copy();
}

void GCanvas::post_gl_copy()
{
    _pixmap->past_copy();
}