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