spicetools/touch/win7.cpp

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2024-08-28 15:10:34 +00:00
// enable touch functions - set version to windows 7
// mingw otherwise doesn't load touch stuff
#define _WIN32_WINNT 0x0601
#include <thread>
#include <mutex>
#include <windowsx.h>
#include "win7.h"
#include "util/libutils.h"
#include "util/logging.h"
#include "rawinput/touch.h"
// mingw issue #2205 workaround
// https://sourceforge.net/p/mingw/bugs/2205/
#undef TOUCHEVENTF_MOVE
#define TOUCHEVENTF_MOVE 0x0001
#undef TOUCHEVENTF_DOWN
#define TOUCHEVENTF_DOWN 0x0002
// mingw doesn't seem to have these
#ifndef WM_TABLET_DEFBASE
#define WM_TABLET_DEFBASE 0x02C0
#define WM_TABLET_QUERYSYSTEMGESTURESTATUS (WM_TABLET_DEFBASE + 12)
#define TABLET_DISABLE_PRESSANDHOLD 0x00000001
#define TABLET_DISABLE_PENTAPFEEDBACK 0x00000008
#define TABLET_DISABLE_PENBARRELFEEDBACK 0x00000010
#define TABLET_DISABLE_TOUCHUIFORCEON 0x00000100
#define TABLET_DISABLE_TOUCHUIFORCEOFF 0x00000200
#define TABLET_DISABLE_TOUCHSWITCH 0x00008000
#define TABLET_DISABLE_FLICKS 0x00010000
#define TABLET_DISABLE_SMOOTHSCROLLING 0x00080000
#define TABLET_DISABLE_FLICKFALLBACKKEYS 0x00100000
#define TABLET_ENABLE_MULTITOUCHDATA 0x01000000
#endif
// general states
static HMODULE USER32_INSTANCE = nullptr;
static const char *LOG_MODULE_NAME = "touch::win7";
/* dynamic touch functions
* to maintain compatibility with windows XP
*/
static BOOL (WINAPI *pSetGestureConfig)(HWND, DWORD, UINT, PGESTURECONFIG, UINT);
static BOOL (WINAPI *pRegisterTouchWindow)(HWND, ULONG);
static BOOL (WINAPI *pGetTouchInputInfo)(HANDLE, UINT, PTOUCHINPUT, int);
static BOOL (WINAPI *pCloseTouchInputHandle)(HANDLE);
static BOOL (WINAPI *pUnregisterTouchWindow)(HWND hWnd);
// other
static const char ATOM_NAME[] = "MicrosoftTabletPenServiceProperty";
Win7Handler::Win7Handler() : TouchHandler("win7") {
// check if already loaded
static bool functions_loaded = false;
if (functions_loaded) {
return;
}
// load user32
if (USER32_INSTANCE == nullptr) {
USER32_INSTANCE = libutils::load_library("user32.dll");
}
// load touch functions
pSetGestureConfig = libutils::try_proc<decltype(pSetGestureConfig)>(
USER32_INSTANCE, "SetGestureConfig");
pRegisterTouchWindow = libutils::try_proc<decltype(pRegisterTouchWindow)>(
USER32_INSTANCE, "RegisterTouchWindow");
pGetTouchInputInfo = libutils::try_proc<decltype(pGetTouchInputInfo)>(
USER32_INSTANCE, "GetTouchInputInfo");
pCloseTouchInputHandle = libutils::try_proc<decltype(pCloseTouchInputHandle)>(
USER32_INSTANCE, "CloseTouchInputHandle");
pUnregisterTouchWindow = libutils::try_proc<decltype(pUnregisterTouchWindow)>(
USER32_INSTANCE, "UnregisterTouchWindow");
functions_loaded = true;
}
bool Win7Handler::is_available() {
bool win_touch_available = (GetSystemMetrics(94) & 0x80) == 0x80;
if (win_touch_available) {
log_info(LOG_MODULE_NAME, "WinTouch available");
} else {
log_info(LOG_MODULE_NAME, "WinTouch unavailable");
}
return win_touch_available;
}
bool Win7Handler::window_register(HWND hWnd) {
bool result = true;
// atom settings
DWORD dwHwndTabletProperty = TABLET_DISABLE_PRESSANDHOLD |
TABLET_DISABLE_PENTAPFEEDBACK |
TABLET_DISABLE_PENBARRELFEEDBACK |
TABLET_DISABLE_FLICKS;
// get atom ID
ATOM atom_id = GlobalAddAtom(ATOM_NAME);
// disable gestures
if (atom_id > 0) {
SetProp(hWnd, ATOM_NAME, (HANDLE) ((unsigned long long) dwHwndTabletProperty));
}
// register touch window
if ((pRegisterTouchWindow == nullptr) || (pRegisterTouchWindow(hWnd, TWF_WANTPALM) == 0)) {
log_warning(LOG_MODULE_NAME, "could not register touch window");
result = false;
}
// set gesture config
if (pSetGestureConfig != nullptr) {
GESTURECONFIG gc {};
gc.dwID = 0;
gc.dwWant = 0;
gc.dwBlock = 1;
pSetGestureConfig(hWnd, 0, 1, &gc, sizeof(GESTURECONFIG));
}
return result;
}
bool Win7Handler::window_unregister(HWND hWnd) {
// dispose window
if (pUnregisterTouchWindow != nullptr) {
pUnregisterTouchWindow(hWnd);
}
return true;
}
void Win7Handler::handle_message(msg_handler_result &result, HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
// parse touch messages
switch (msg) {
case WM_TOUCH: {
// touch input fields
UINT cInputs = LOWORD(wParam);
auto pInputs = std::make_unique<TOUCHINPUT[]>(cInputs);
// get touch input
if ((pGetTouchInputInfo != nullptr) &&
(pGetTouchInputInfo((HANDLE) lParam, cInputs, pInputs.get(), sizeof(TOUCHINPUT)) != 0)) {
// lock touch points
std::lock_guard<std::mutex> lock_points(TOUCH_POINTS_M);
std::lock_guard<std::mutex> lock_events(TOUCH_EVENTS_M);
// iterate all inputs
static long prev_x, prev_y;
for (UINT i = 0; i < cInputs; i++) {
auto &ti = pInputs[i];
// touch down
if (ti.dwFlags & TOUCHEVENTF_DOWN) {
// convert to window position
POINT point {};
point.x = ti.x / 100;
point.y = ti.y / 100;
ScreenToClient(hWnd, &point);
// create new touch point
TouchPoint tp {
.id = ti.dwID,
.x = point.x,
.y = point.y,
.mouse = false,
};
TOUCH_POINTS.push_back(tp);
// add touch down event
TouchEvent te {
.id = tp.id,
.x = tp.x,
.y = tp.y,
.type = TOUCH_DOWN,
.mouse = tp.mouse,
};
add_touch_event(&te);
// set prev coordinates
prev_x = point.x;
prev_y = point.y;
// card button
update_card_button();
}
// touch move
if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0u) {
// convert to window position
POINT point {};
point.x = ti.x / 100;
point.y = ti.y / 100;
ScreenToClient(hWnd, &point);
// check prev coordinates
if (point.x != prev_x || point.y != prev_y) {
// update point
for (auto &tp : TOUCH_POINTS) {
if (tp.id == ti.dwID) {
// update values
tp.x = point.x;
tp.y = point.y;
// add touch move event
TouchEvent te {
.id = tp.id,
.x = tp.x,
.y = tp.y,
.type = TOUCH_MOVE,
.mouse = tp.mouse,
};
add_touch_event(&te);
break;
}
}
}
// set prev coordinates
prev_x = point.x;
prev_y = point.y;
}
// touch up
if ((ti.dwFlags & TOUCHEVENTF_UP) != 0u) {
// remove point
for (size_t x = 0; x < TOUCH_POINTS.size(); x++) {
auto &tp = TOUCH_POINTS[x];
if (tp.id == ti.dwID) {
// add touch up event
TouchEvent te {
.id = tp.id,
.x = tp.x,
.y = tp.y,
.type = TOUCH_UP,
.mouse = tp.mouse,
};
add_touch_event(&te);
// remove from active touch points
TOUCH_POINTS.erase(TOUCH_POINTS.begin() + x);
break;
}
}
}
}
}
// clean up
if (pCloseTouchInputHandle != nullptr) {
pCloseTouchInputHandle((HANDLE) lParam);
}
result.action = ACTION_RETURN_DEFAULT;
break;
}
case WM_TABLET_QUERYSYSTEMGESTURESTATUS: {
result.action = ACTION_RETURN_STORED;
result.return_value = TABLET_DISABLE_PRESSANDHOLD
| TABLET_DISABLE_PENTAPFEEDBACK
| TABLET_DISABLE_PENBARRELFEEDBACK
| TABLET_DISABLE_TOUCHUIFORCEON
| TABLET_DISABLE_TOUCHUIFORCEOFF
| TABLET_DISABLE_TOUCHSWITCH
| TABLET_DISABLE_FLICKS
| TABLET_DISABLE_SMOOTHSCROLLING
| TABLET_DISABLE_FLICKFALLBACKKEYS
| TABLET_ENABLE_MULTITOUCHDATA;
break;
}
default:
break;
}
}