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- /* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
- * Copyright (C) 2004-2005 Constantin Kaplinsky. All Rights Reserved.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
- //
- // Image.h
- //
-
- #ifndef __IMAGE_H__
- #define __IMAGE_H__
-
- #include <X11/Xlib.h>
- #include <X11/Xutil.h>
-
- //
- // Image class is an Xlib-based implementation of screen image storage.
- //
-
- class Image {
-
- public:
-
- Image(Display *d);
- Image(Display *d, int width, int height);
- virtual ~Image();
-
- virtual const char *className() const {
- return "Image";
- }
- virtual const char *classDesc() const {
- return "basic Xlib image";
- }
-
- virtual void get(Window wnd, int x = 0, int y = 0);
- virtual void get(Window wnd, int x, int y, int w, int h,
- int dst_x = 0, int dst_y = 0);
-
- // Copying pixels from one image to another.
- virtual void updateRect(XImage *src, int dst_x = 0, int dst_y = 0);
- virtual void updateRect(Image *src, int dst_x = 0, int dst_y = 0);
- virtual void updateRect(XImage *src, int dst_x, int dst_y, int w, int h);
- virtual void updateRect(Image *src, int dst_x, int dst_y, int w, int h);
- virtual void updateRect(XImage *src, int dst_x, int dst_y,
- int src_x, int src_y, int w, int h);
- virtual void updateRect(Image *src, int dst_x, int dst_y,
- int src_x, int src_y, int w, int h);
-
- // Pointer to corresponding XImage, made public for efficiency.
- // NOTE: if this field is NULL, then no methods other than Init()
- // may be called.
- XImage *xim;
-
- // Get a pointer to the data corresponding to the given coordinates.
- inline char *locatePixel(int x, int y) const {
- return (xim->data +
- y * xim->bytes_per_line +
- x * (xim->bits_per_pixel / 8));
- }
-
- protected:
-
- void Init(int width, int height);
-
- // Like updateRect(), but does not check arguments.
- void copyPixels(XImage *src,
- int dst_x, int dst_y,
- int src_x, int src_y,
- int w, int h);
-
- Display *dpy;
- };
-
- //
- // ShmImage uses MIT-SHM extension of an X server to get image data.
- //
-
- #include <X11/extensions/XShm.h>
-
- class ShmImage : public Image {
-
- public:
-
- ShmImage(Display *d);
- ShmImage(Display *d, int width, int height);
- virtual ~ShmImage();
-
- virtual const char *className() const {
- return "ShmImage";
- }
- virtual const char *classDesc() const {
- return "shared memory image";
- }
-
- virtual void get(Window wnd, int x = 0, int y = 0);
- virtual void get(Window wnd, int x, int y, int w, int h,
- int dst_x = 0, int dst_y = 0);
-
- protected:
-
- void Init(int width, int height, const XVisualInfo *vinfo = NULL);
-
- XShmSegmentInfo *shminfo;
-
- };
-
- //
- // ImageFactory class is used to produce instances of Image-derived
- // objects that are most appropriate for current X server and user
- // settings.
- //
-
- class ImageFactory {
-
- public:
-
- ImageFactory(bool allowShm);
- virtual ~ImageFactory();
-
- bool isShmAllowed() { return mayUseShm; }
-
- virtual Image *newImage(Display *d, int width, int height);
-
- protected:
-
- bool mayUseShm;
-
- };
-
- #endif // __IMAGE_H__
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