spice/client/red_gdi_canvas.cpp

/*
   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_gdi_canvas.h"
#include "utils.h"
#include "debug.h"
#include "region.h"
#include "red_pixmap_gdi.h"

GDICanvas::GDICanvas(PixmapCache& pixmap_cache, PaletteCache& palette_cache,
                     GlzDecoderWindow &glz_decoder_window, CSurfaces &csurfaces)
    : Canvas (pixmap_cache, palette_cache, glz_decoder_window, csurfaces)
    , _pixmap (0)
{
}

GDICanvas::~GDICanvas()
{
    destroy();
}

void GDICanvas::destroy()
{
    if (_canvas) {
        _canvas->ops->destroy(_canvas);
        _canvas = NULL;
    }
    destroy_pixmap();
}

void GDICanvas::destroy_pixmap()
{
    delete _pixmap;
    _pixmap = NULL;
}

void GDICanvas::create_pixmap(int width, int height)
{
    _pixmap = new RedPixmapGdi(width, height, RedPixmap::RGB32, true, NULL);
}

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

void GDICanvas::set_mode(int width, int height, int depth)
{
    destroy();
    create_pixmap(width, height);
    if (!(_canvas = gdi_canvas_create(width, height, _pixmap->get_dc(),
                                      &_pixmap->get_mutex(),
                                      depth, &pixmap_cache().base,
                                      &palette_cache().base,
                                      &csurfaces().base,
                                      &glz_decoder()))) {
        THROW("create canvas failed");
    }
}

CanvasType GDICanvas::get_pixmap_type()
{
    return CANVAS_TYPE_GDI;
}