2 * Copyright (C) 2007-2008 Alacatia Labs
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute it
10 * freely, subject to the following restrictions:
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 * 2. Altered source versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software.
18 * 3. This notice may not be removed or altered from any source distribution.
20 * Joe Ranieri joe@alacatia.com
25 #include "CGSConnection.h"
29 /*! Gets whether the display is zoomed. I'm not sure why there's two calls that appear to do the same thing - I think CGSIsZoomed calls through to CGSDisplayIsZoomed. */
30 CG_EXTERN bool CGSDisplayIsZoomed(void);
31 CG_EXTERN CGError CGSIsZoomed(CGSConnectionID cid, bool *outIsZoomed);
33 /*! Gets and sets the cursor scale. The largest the Universal Access prefpane allows you to go is 4.0. */
34 CG_EXTERN CGError CGSGetCursorScale(CGSConnectionID cid, float *outScale);
35 CG_EXTERN CGError CGSSetCursorScale(CGSConnectionID cid, float scale);
37 /*! Gets and sets the state of screen inversion. */
38 CG_EXTERN bool CGDisplayUsesInvertedPolarity(void);
39 CG_EXTERN void CGDisplaySetInvertedPolarity(bool invertedPolarity);
41 /*! Gets and sets whether the screen is grayscale. */
42 CG_EXTERN bool CGDisplayUsesForceToGray(void);
43 CG_EXTERN void CGDisplayForceToGray(bool forceToGray);
45 /*! Sets the display's contrast. There doesn't seem to be a get version of this function. */
46 CG_EXTERN CGError CGSSetDisplayContrast(float contrast);