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get display DPI info to scale mouse movement

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This commit is contained in:
Quantum
2021-01-04 16:01:24 -05:00
committed by Geoffrey McRae
parent 0bd5f0b2f1
commit 7e4d323427
10 changed files with 123 additions and 36 deletions
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17
common/include/common/KVMFR.h
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@@ -57,7 +57,7 @@ typedef enum CursorType
CursorType;
#define KVMFR_MAGIC "KVMFR---"
#define KVMFR_VERSION 5
#define KVMFR_VERSION 6
typedef struct KVMFR
{
@@ -80,12 +80,13 @@ KVMFRCursor;
typedef struct KVMFRFrame
{
uint32_t formatVer; // the frame format version number
FrameType type; // the frame data type
uint32_t width; // the width
uint32_t height; // the height
uint32_t stride; // the row stride (zero if compressed data)
uint32_t pitch; // the row pitch (stride in bytes or the compressed frame size)
uint32_t offset; // offset from the start of this header to the FrameBuffer header
uint32_t formatVer; // the frame format version number
FrameType type; // the frame data type
uint32_t width; // the width
uint32_t height; // the height
uint32_t stride; // the row stride (zero if compressed data)
uint32_t pitch; // the row pitch (stride in bytes or the compressed frame size)
uint32_t offset; // offset from the start of this header to the FrameBuffer header
uint32_t mouseScalePercent; // movement scale factor of the mouse (relates to DPI of display, 100 = no scale)
}
KVMFRFrame;

25
common/include/common/dpi.h Normal file
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@@ -0,0 +1,25 @@
/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2020 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program 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 program 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 program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <windows.h>
// At 100% scaling, Windows reports 96 DPI.
#define DPI_100_PERCENT 96
UINT monitor_dpi(HMONITOR hMonitor);