81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
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#ifdef TAB_WINTAB
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#include "tablet.h"
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#define PACKETDATA (PK_X | PK_Y | PK_Z | PK_BUTTONS | PK_NORMAL_PRESSURE)
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//#define PACKETMODE
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#include "pktdef.h"
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#include "wtutil.h"
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Tablet::Tablet(uintptr_t handle)
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{
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HWND hwnd = reinterpret_cast<HWND>(handle);
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if (!hwnd) { return; }
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if (!LoadWintab() || !gpWTInfoA(0, 0, NULL)) {
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errormsg = "Wintab not installed.";
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return;
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}
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NewContext(hwnd);
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}
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Tablet::~Tablet() {
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if (hctx) { gpWTClose(hctx); }
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UnloadWintab();
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}
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bool Tablet::GetPacket( Packet& packet ) {
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//Serial number of newest packet.
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UINT oldest, newest;
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//This function returns false when it fails
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//which may happen with a full or empty queue.
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if (!gpWTQueuePacketsEx(hctx, &oldest, &newest)) {
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//Queue may be full, flush it all just in case.
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gpWTPacketsGet(hctx, gpWTQueueSizeGet(hctx), nullptr);
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return false;
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}
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//Store newest packet in pkt, flush older packets.
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PACKET pkt;
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bool newData = gpWTPacket(hctx, newest, &pkt);
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if (!newData) return false;
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packet.x = static_cast<float>(pkt.pkX) / ext.x;
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packet.y = static_cast<float>(pkt.pkY) / ext.y;
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packet.z = static_cast<float>(pkt.pkZ) / ext.z;
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packet.p = static_cast<float>(pkt.pkNormalPressure) / ext.p;
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packet.buttons = pkt.pkButtons;
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return true;
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}
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void Tablet::NewContext(HWND hwnd) {
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if (hctx) { gpWTClose(hctx); }
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LOGCONTEXT ctx = {};
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AXIS TabletX = { 0 };
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AXIS TabletY = { 0 };
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AXIS TabletZ = { 0 };
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AXIS TabletPressure = { 0 };
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gpWTInfoA(WTI_DEFCONTEXT, 0, &ctx);
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ctx.lcOptions |= CXO_MESSAGES; //TODO: checker <20>ela
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ctx.lcPktData = PACKETDATA;
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ctx.lcPktMode = 0;
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//Tablet extents.
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gpWTInfoA(WTI_DEVICES, DVC_X, &TabletX);
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gpWTInfoA(WTI_DEVICES, DVC_Y, &TabletY);
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gpWTInfoA(WTI_DEVICES, DVC_Z, &TabletZ);
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gpWTInfoA(WTI_DEVICES, DVC_NPRESSURE, &TabletPressure);
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ext.x = static_cast<float>(TabletX.axMax);
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ext.y = static_cast<float>(TabletY.axMax);
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ext.z = static_cast<float>(TabletZ.axMax);
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ext.p = static_cast<float>(TabletPressure.axMax);
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hctx = gpWTOpenA(hwnd, &ctx, TRUE);
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if (!hctx)
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{
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errormsg = "Could not open Wintab context.";
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return;
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}
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initialized = true;
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};
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#endif
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