summaryrefslogtreecommitdiff
path: root/vcl/qt5/Qt5Instance.cxx
blob: 71e9883416f184bdc24a2f1884ece24c1801a940 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <Qt5Instance.hxx>
#include <Qt5Instance.moc>

#include <com/sun/star/lang/IllegalArgumentException.hpp>

#include <Qt5Bitmap.hxx>
#include <Qt5Clipboard.hxx>
#include <Qt5Data.hxx>
#include <Qt5FilePicker.hxx>
#include <Qt5Frame.hxx>
#include <Qt5Menu.hxx>
#include <Qt5Object.hxx>
#include <Qt5System.hxx>
#include <Qt5Timer.hxx>
#include <Qt5VirtualDevice.hxx>

#include <headless/svpvd.hxx>

#include <QtCore/QAbstractEventDispatcher>
#include <QtCore/QThread>
#include <QtWidgets/QApplication>
#include <QtWidgets/QWidget>

#include <vclpluginapi.h>
#include <sal/log.hxx>
#include <osl/process.h>

#include <headless/svpbmp.hxx>

Qt5Instance::Qt5Instance(bool bUseCairo)
    : SalGenericInstance(o3tl::make_unique<SalYieldMutex>())
    , m_postUserEventId(-1)
    , m_bUseCairo(bUseCairo)
{
    ImplSVData* pSVData = ImplGetSVData();
    if (bUseCairo)
        pSVData->maAppData.mxToolkitName = OUString("qt5+cairo");
    else
        pSVData->maAppData.mxToolkitName = OUString("qt5");

    m_postUserEventId = QEvent::registerEventType();

    // this one needs to be blocking, so that the handling in main thread
    // is processed before the thread emitting the signal continues
    connect(this, SIGNAL(ImplYieldSignal(bool, bool)), this, SLOT(ImplYield(bool, bool)),
            Qt::BlockingQueuedConnection);
}

Qt5Instance::~Qt5Instance()
{
    // force freeing the QApplication before freeing the arguments,
    // as it uses references to the provided arguments!
    m_pQApplication.reset();
    for (int i = 0; i < *m_pFakeArgc; i++)
        free(m_pFakeArgvFreeable[i]);
}

SalFrame* Qt5Instance::CreateChildFrame(SystemParentData* /*pParent*/, SalFrameStyleFlags nStyle)
{
    return new Qt5Frame(nullptr, nStyle, m_bUseCairo);
}

SalFrame* Qt5Instance::CreateFrame(SalFrame* pParent, SalFrameStyleFlags nStyle)
{
    assert(!pParent || dynamic_cast<Qt5Frame*>(pParent));
    return new Qt5Frame(static_cast<Qt5Frame*>(pParent), nStyle, m_bUseCairo);
}

void Qt5Instance::DestroyFrame(SalFrame* pFrame) { delete pFrame; }

SalObject* Qt5Instance::CreateObject(SalFrame* pParent, SystemWindowData*, bool bShow)
{
    assert(!pParent || dynamic_cast<Qt5Frame*>(pParent));
    return new Qt5Object(static_cast<Qt5Frame*>(pParent), bShow);
}

void Qt5Instance::DestroyObject(SalObject* pObject) { delete pObject; }

std::unique_ptr<SalVirtualDevice>
Qt5Instance::CreateVirtualDevice(SalGraphics* pGraphics, long& nDX, long& nDY, DeviceFormat eFormat,
                                 const SystemGraphicsData* /* pData */)
{
    if (m_bUseCairo)
    {
        SvpSalGraphics* pSvpSalGraphics = dynamic_cast<SvpSalGraphics*>(pGraphics);
        assert(pSvpSalGraphics);
        std::unique_ptr<SalVirtualDevice> pVD(
            new SvpSalVirtualDevice(eFormat, pSvpSalGraphics->getSurface()));
        pVD->SetSize(nDX, nDY);
        return pVD;
    }
    else
    {
        std::unique_ptr<SalVirtualDevice> pVD(new Qt5VirtualDevice(eFormat, 1));
        pVD->SetSize(nDX, nDY);
        return pVD;
    }
}

std::unique_ptr<SalMenu> Qt5Instance::CreateMenu(bool bMenuBar, Menu* pVCLMenu)
{
    Qt5Menu* pSalMenu = new Qt5Menu(bMenuBar);
    pSalMenu->SetMenu(pVCLMenu);
    return std::unique_ptr<SalMenu>(pSalMenu);
}

std::unique_ptr<SalMenuItem> Qt5Instance::CreateMenuItem(const SalItemParams& rItemData)
{
    return std::unique_ptr<SalMenuItem>(new Qt5MenuItem(&rItemData));
}

SalTimer* Qt5Instance::CreateSalTimer() { return new Qt5Timer(); }

SalSystem* Qt5Instance::CreateSalSystem() { return new Qt5System; }

std::shared_ptr<SalBitmap> Qt5Instance::CreateSalBitmap()
{
    if (m_bUseCairo)
        return std::make_shared<SvpSalBitmap>();
    else
        return std::make_shared<Qt5Bitmap>();
}

bool Qt5Instance::ImplYield(bool bWait, bool bHandleAllCurrentEvents)
{
    // Re-acquire the guard for user events when called via Q_EMIT ImplYieldSignal
    SolarMutexGuard aGuard;
    bool wasEvent = DispatchUserEvents(bHandleAllCurrentEvents);
    if (!bHandleAllCurrentEvents && wasEvent)
        return true;

    /**
     * Quoting the Qt docs: [QAbstractEventDispatcher::processEvents] processes
     * pending events that match flags until there are no more events to process.
     */
    SolarMutexReleaser aReleaser;
    QAbstractEventDispatcher* dispatcher = QAbstractEventDispatcher::instance(qApp->thread());
    if (bWait && !wasEvent)
        wasEvent = dispatcher->processEvents(QEventLoop::WaitForMoreEvents);
    else
        wasEvent = dispatcher->processEvents(QEventLoop::AllEvents) || wasEvent;
    return wasEvent;
}

bool Qt5Instance::DoYield(bool bWait, bool bHandleAllCurrentEvents)
{
    bool bWasEvent = false;
    if (qApp->thread() == QThread::currentThread())
    {
        bWasEvent = ImplYield(bWait, bHandleAllCurrentEvents);
        if (bWasEvent)
            m_aWaitingYieldCond.set();
    }
    else
    {
        {
            SolarMutexReleaser aReleaser;
            bWasEvent = Q_EMIT ImplYieldSignal(false, bHandleAllCurrentEvents);
        }
        if (!bWasEvent && bWait)
        {
            m_aWaitingYieldCond.reset();
            SolarMutexReleaser aReleaser;
            m_aWaitingYieldCond.wait();
            bWasEvent = true;
        }
    }
    return bWasEvent;
}

bool Qt5Instance::AnyInput(VclInputFlags /*nType*/) { return false; }

OUString Qt5Instance::GetConnectionIdentifier() { return OUString(); }

void Qt5Instance::AddToRecentDocumentList(const OUString&, const OUString&, const OUString&) {}

OpenGLContext* Qt5Instance::CreateOpenGLContext() { return nullptr; }

bool Qt5Instance::IsMainThread() const { return qApp->thread() != QThread::currentThread(); }

void Qt5Instance::TriggerUserEventProcessing()
{
    QApplication::postEvent(this, new QEvent(QEvent::Type(m_postUserEventId)));
}

void Qt5Instance::ProcessEvent(SalUserEvent aEvent)
{
    aEvent.m_pFrame->CallCallback(aEvent.m_nEvent, aEvent.m_pData);
}

css::uno::Reference<css::ui::dialogs::XFilePicker2>
Qt5Instance::createFilePicker(const css::uno::Reference<css::uno::XComponentContext>&)
{
    return css::uno::Reference<css::ui::dialogs::XFilePicker2>(
        new Qt5FilePicker(QFileDialog::ExistingFile));
}

css::uno::Reference<css::ui::dialogs::XFolderPicker2>
Qt5Instance::createFolderPicker(const css::uno::Reference<css::uno::XComponentContext>&)
{
    return css::uno::Reference<css::ui::dialogs::XFolderPicker2>(
        new Qt5FilePicker(QFileDialog::Directory));
}

css::uno::Reference<css::uno::XInterface>
Qt5Instance::CreateClipboard(const css::uno::Sequence<css::uno::Any>& arguments)
{
    OUString sel;
    if (arguments.getLength() == 0)
    {
        sel = "CLIPBOARD";
    }
    else if (arguments.getLength() != 1 || !(arguments[0] >>= sel))
    {
        throw css::lang::IllegalArgumentException("bad Qt5Instance::CreateClipboard arguments",
                                                  css::uno::Reference<css::uno::XInterface>(), -1);
    }

    css::uno::Reference<css::uno::XInterface> xClipboard(
        static_cast<cppu::OWeakObject*>(new VclQt5Clipboard()));

    return xClipboard;
}

extern "C" {
VCLPLUG_QT5_PUBLIC SalInstance* create_SalInstance()
{
    OString aVersion(qVersion());
    SAL_INFO("vcl.qt5", "qt version string is " << aVersion);

    QApplication* pQApplication;
    char** pFakeArgvFreeable = nullptr;

    int nFakeArgc = 2;
    const sal_uInt32 nParams = osl_getCommandArgCount();
    OString aDisplay;
    OUString aParam, aBin;

    for (sal_uInt32 nIdx = 0; nIdx < nParams; ++nIdx)
    {
        osl_getCommandArg(nIdx, &aParam.pData);
        if (aParam != "-display")
            continue;
        if (!pFakeArgvFreeable)
        {
            pFakeArgvFreeable = new char*[nFakeArgc + 2];
            pFakeArgvFreeable[nFakeArgc++] = strdup("-display");
        }
        else
            free(pFakeArgvFreeable[nFakeArgc]);

        ++nIdx;
        osl_getCommandArg(nIdx, &aParam.pData);
        aDisplay = OUStringToOString(aParam, osl_getThreadTextEncoding());
        pFakeArgvFreeable[nFakeArgc] = strdup(aDisplay.getStr());
    }
    if (!pFakeArgvFreeable)
        pFakeArgvFreeable = new char*[nFakeArgc];
    else
        nFakeArgc++;

    osl_getExecutableFile(&aParam.pData);
    osl_getSystemPathFromFileURL(aParam.pData, &aBin.pData);
    OString aExec = OUStringToOString(aBin, osl_getThreadTextEncoding());
    pFakeArgvFreeable[0] = strdup(aExec.getStr());
    pFakeArgvFreeable[1] = strdup("--nocrashhandler");

    char** pFakeArgv = new char*[nFakeArgc];
    for (int i = 0; i < nFakeArgc; i++)
        pFakeArgv[i] = pFakeArgvFreeable[i];

    char* session_manager = nullptr;
    if (getenv("SESSION_MANAGER") != nullptr)
    {
        session_manager = strdup(getenv("SESSION_MANAGER"));
        unsetenv("SESSION_MANAGER");
    }

    int* pFakeArgc = new int;
    *pFakeArgc = nFakeArgc;
    pQApplication = new QApplication(*pFakeArgc, pFakeArgv);

    if (session_manager != nullptr)
    {
        // coverity[tainted_string] - trusted source for setenv
        setenv("SESSION_MANAGER", session_manager, 1);
        free(session_manager);
    }

    QApplication::setQuitOnLastWindowClosed(false);

    static const bool bUseCairo = (nullptr != getenv("SAL_VCL_QT5_USE_CAIRO"));
    Qt5Instance* pInstance = new Qt5Instance(bUseCairo);

    // initialize SalData
    new Qt5Data(pInstance);

    pInstance->m_pQApplication.reset(pQApplication);
    pInstance->m_pFakeArgvFreeable.reset(pFakeArgvFreeable);
    pInstance->m_pFakeArgv.reset(pFakeArgv);
    pInstance->m_pFakeArgc.reset(pFakeArgc);

    return pInstance;
}
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */