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Fix T55589: drawing strokes with Microsoft surface pen misses first part. 

This disables touch gesture recognition in Blender, avoiding any initial delay
when drawing with grease pencil, texture paint, etc.

Differential Revision: https://developer.blender.org/D4203
This commit is contained in:
Christopher Peerman 2019-01-14 12:15:59 +01:00 committed by Brecht Van Lommel
parent 10fa3b790f
commit 19fba61d46
Notes: blender-bot 2023-02-14 05:41:58 +01:00 
Referenced by issue #55589, Microsoft Surface pens does not send first events when moves
2 changed files with 25 additions and 4 deletions
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26
intern/ghost/intern/GHOST_WindowWin32.cpp
View File

@ -190,7 +190,24 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system,
0); // pointer to window-creation data
free(title_16);
}
m_user32 = ::LoadLibrary("user32.dll");
if (m_hWnd) {
if (m_user32) {
// Touch enabled screens with pen support by default have gestures
// enabled, which results in a delay between the pointer down event
// and the first move when using the stylus. RegisterTouchWindow
// disables the new gesture architecture enabling the events to be
// sent immediately to the application rather than being absorbed by
// the gesture API.
GHOST_WIN32_RegisterTouchWindow pRegisterTouchWindow =
(GHOST_WIN32_RegisterTouchWindow)GetProcAddress(m_user32, "RegisterTouchWindow");
if (pRegisterTouchWindow) {
pRegisterTouchWindow(m_hWnd, 0);
}
}
// Register this window as a droptarget. Requires m_hWnd to be valid.
// Note that OleInitialize(0) has to be called prior to this. Done in GHOST_SystemWin32.
m_dropTarget = new GHOST_DropTargetWin32(this, m_system);
@ -368,6 +385,11 @@ GHOST_WindowWin32::~GHOST_WindowWin32()
::DestroyWindow(m_hWnd);
m_hWnd = 0;
}
if (m_user32) {
FreeLibrary(m_user32);
m_user32 = NULL;
}
}
bool GHOST_WindowWin32::getValid() const
@ -998,10 +1020,6 @@ void GHOST_WindowWin32::bringTabletContextToFront()
GHOST_TUns16 GHOST_WindowWin32::getDPIHint()
{
if (!m_user32) {
m_user32 = ::LoadLibrary("user32.dll");
}
if (m_user32) {
GHOST_WIN32_GetDpiForWindow fpGetDpiForWindow = (GHOST_WIN32_GetDpiForWindow) ::GetProcAddress(m_user32, "GetDpiForWindow");

3
intern/ghost/intern/GHOST_WindowWin32.h
View File

@ -59,6 +59,9 @@ typedef BOOL (API * GHOST_WIN32_WTPacket)(HCTX, UINT, LPVOID);
typedef BOOL (API * GHOST_WIN32_WTEnable)(HCTX, BOOL);
typedef BOOL (API * GHOST_WIN32_WTOverlap)(HCTX, BOOL);
// typedef to user32 functions to disable gestures on windows
typedef BOOL(API * GHOST_WIN32_RegisterTouchWindow)(HWND hwnd, ULONG ulFlags);
// typedefs for user32 functions to allow dynamic loading of Windows 10 DPI scaling functions
typedef UINT(API * GHOST_WIN32_GetDpiForWindow)(HWND);
#ifndef USER_DEFAULT_SCREEN_DPI