Mercurial > sdl-ios-xcode

view src/video/x11/SDL_x11window.h @ 3333:b334b4f7dfa0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[SDL] Bad math in SDL_RenderCopy Mason Wheeler to sdl When I tried to render an image using something other than NULL for srcrect, it got horribly distorted. I traced it down to the fact that the math in the rectangle adjustments performed just before the call to renderer->RenderCopy is written inside out. It should look like this: if (dstrect->w != real_dstrect.w) { int deltax = (dstrect->x - real_dstrect.x); int deltaw = (dstrect->w - real_dstrect.w); real_srcrect.x += (deltax * real_srcrect.w) / dstrect->w; real_srcrect.w += (deltaw * real_srcrect.w) / dstrect->w; } if (dstrect->h != real_dstrect.h) { int deltay = (dstrect->y - real_dstrect.y); int deltah = (dstrect->h - real_dstrect.h); real_srcrect.y += (deltay * real_srcrect.h) / dstrect->h; real_srcrect.h += (deltah * real_srcrect.h) / dstrect->h;
author Sam Lantinga <slouken@libsdl.org>
date Sat, 03 Oct 2009 16:23:16 +0000
parents e4a469d6ddab
children 64ce267332c6
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    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, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _SDL_x11window_h
#define _SDL_x11window_h

typedef struct
{
    SDL_WindowID windowID;
    Window window;
    XIC ic;
    SDL_bool created;
    struct SDL_VideoData *videodata;
} SDL_WindowData;

extern int X11_CreateWindow(_THIS, SDL_Window * window);
extern int X11_CreateWindowFrom(_THIS, SDL_Window * window, const void *data);
extern void X11_SetWindowTitle(_THIS, SDL_Window * window);
extern void X11_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon);
extern void X11_SetWindowPosition(_THIS, SDL_Window * window);
extern void X11_SetWindowSize(_THIS, SDL_Window * window);
extern void X11_ShowWindow(_THIS, SDL_Window * window);
extern void X11_HideWindow(_THIS, SDL_Window * window);
extern void X11_RaiseWindow(_THIS, SDL_Window * window);
extern void X11_MaximizeWindow(_THIS, SDL_Window * window);
extern void X11_MinimizeWindow(_THIS, SDL_Window * window);
extern void X11_RestoreWindow(_THIS, SDL_Window * window);
extern void X11_SetWindowGrab(_THIS, SDL_Window * window);
extern void X11_DestroyWindow(_THIS, SDL_Window * window);
extern SDL_bool X11_GetWindowWMInfo(_THIS, SDL_Window * window,
                                    struct SDL_SysWMinfo *info);

#endif /* _SDL_x11window_h */

/* vi: set ts=4 sw=4 expandtab: */