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/**************************************************************************
* Copyright © 2016 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* This file contains calls into the RandR1.2 code and modification of core
* RandR data structures that probably were never intended from drivers.
*/
#ifndef _VMWGFX_RR_INLINES_H_
#define _VMWGFX_RR_INLINES_H_
#include <xf86Crtc.h>
#include <xf86RandR12.h>
#define VMW_DPI 96.
#define VMW_INCH_TO_MM 25.4
/**
* vmwgfx_notify_rr - Notify RandR that our configuration has changed.
*
* @pScreen: Pointer to the affected screen.
*
* Normally screen configurations are typically only changed using RandR,
* so when we do it in an udev handler, we need to notify RandR that we've
* made a change, so that it can be propagated to all RandR clients.
*/
static inline void
vmwgfx_notify_rr(ScreenPtr pScreen)
{
rrScrPriv(pScreen);
/*
* We need to update the time-stamps, otherwise X clients that haven't
* yet read this config might just overwrite it.
* This effectively stops the desktop manager from trying to
* outsmart us, since RandR simply doesn't accept requests from
* clients that haven't read this config and tag their request with
* an earlier timestamp.
*/
pScrPriv->lastSetTime = currentTime;
pScrPriv->lastConfigTime = currentTime;
#ifdef RANDR_12_INTERFACE
xf86RandR12TellChanged(pScreen);
#else
RRTellChanged(pScreen);
#endif
}
/**
* vmwgfx_rr_screen_set_size - Use RandR to change the root pixmap dimensions.
*
* @pScreen: Pointer to the affected screen.
*
* Returns: TRUE if successful. False otherwise.
*/
static inline Bool
vmwgfx_rr_screen_set_size(ScreenPtr pScreen, int width, int height)
{
rrScrPriv(pScreen);
float mm_width, mm_height;
mm_width = ((float) width) * VMW_INCH_TO_MM / VMW_DPI + .5;
mm_height = ((float) height) * VMW_INCH_TO_MM / VMW_DPI + .5;
return pScrPriv->rrScreenSetSize(pScreen, width, height,
(int) mm_width, (int) mm_height);
}
#endif
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