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https://github.com/spice2x/spice2x.github.io.git
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bicarus-dev
a09905792d
## Link to GitHub Issue, if one exists n/a ## Description of change When touch monitors send touch area size information (`TOUCHEVENTFMASK_CONTACTAREA` flag and `cxContact` / `cyContact` fields of `TOUCHINPUT` struct) from `GetTouchInputInfo`, IIDX gets confused and does some unexpected things when interacting with the subscreen. As a workaround, hook `GetTouchInputInfo` and clear out the flag & values. This is only done for IIDX AND when -iidxnativetouch is on. ## Testing Tested on a Dell touch monitor, simulating "bad" values.
91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
// enable touch functions - set version to windows 7
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// mingw otherwise doesn't load touch stuff
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#define _WIN32_WINNT 0x0601
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#include "wintouchemu.h"
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#include "util/detour.h"
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#include "util/logging.h"
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#define TOUCH_SIMULATE_FAT_FINGERS 0
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#define TOUCH_DEBUG_VERBOSE 0
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#if TOUCH_DEBUG_VERBOSE
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#define log_debug(module, format_str, ...) logger::push( \
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LOG_FORMAT("M", module, format_str, ## __VA_ARGS__), logger::Style::GREY)
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#else
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#define log_debug(module, format_str, ...)
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#endif
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namespace nativetouchhook {
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static decltype(GetTouchInputInfo) *GetTouchInputInfo_orig = nullptr;
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static void strip_contact_size(PTOUCHINPUT point) {
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#if TOUCH_SIMULATE_FAT_FINGERS
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point->dwMask |= 0x004;
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point->cxContact = 80 * 100;
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point->cyContact = 60 * 100;
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#endif
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// most monitors do not set TOUCHEVENTFMASK_CONTACTAREA, but for
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// monitors that do set it, IIDX can get very confused (SDVX is not
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// affected)
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//
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// while the test menu and the touch "glow" seem to work properly,
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// interacting with subscreen menu items or entering PIN becomes
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// very unpredictable
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//
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// to fix this, simply remove the contact area width and height
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//
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// note: test menu > I/O > touch test gives 5 numbers:
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// n: x, y, w, h
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// where
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// n is the nth touch input since boot
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// x, y are coordinates (center of finger)
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// w, h are contact width and height
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//
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// when TOUCHEVENTFMASK_CONTACTAREA is not set, w/h will
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// automatically be seen as 1x1, which works perfectly fine
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log_debug(
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"touch::native",
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"[{}, {}] dwMask = 0x{:x}, cxContact = {}, cyContact = {}",
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point->x / 100,
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point->y / 100,
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point->dwMask,
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point->cxContact,
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point->cyContact);
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point->dwMask &= ~(0x004ul); // clear TOUCHEVENTFMASK_CONTACTAREA
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point->cxContact = 0;
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point->cyContact = 0;
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}
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static BOOL WINAPI GetTouchInputInfoHook(
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HTOUCHINPUT hTouchInput, UINT cInputs, PTOUCHINPUT pInputs, int cbSize) {
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// call the original fist
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const auto result = GetTouchInputInfo_orig(hTouchInput, cInputs, pInputs, cbSize);
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if (result == 0) {
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return result;
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}
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for (size_t i = 0; i < cInputs; i++) {
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PTOUCHINPUT point = &pInputs[i];
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strip_contact_size(point);
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}
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return result;
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}
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void hook(HMODULE module) {
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GetTouchInputInfo_orig = detour::iat_try("GetTouchInputInfo", GetTouchInputInfoHook, module);
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if (GetTouchInputInfo_orig != nullptr) {
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log_misc("touch::native", "GetTouchInputInfo hooked");
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}
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}
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}
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