1 files changed, 275 insertions, 0 deletions
diff --git a/vcl/unx/gtk3/gtk3gtksys.cxx b/vcl/unx/gtk3/gtk3gtksys.cxx
new file mode 100644
index 000000000..379c87343
--- /dev/null
+++ b/vcl/unx/gtk3/gtk3gtksys.cxx
@@ -0,0 +1,275 @@
+/* -*- 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 <gtk/gtk.h>
+#include <unx/gtk/gtkinst.hxx>
+#include <unx/gtk/gtksys.hxx>
+#include <unx/gtk/gtkbackend.hxx>
+#include <osl/module.h>
+
+GtkSalSystem *GtkSalSystem::GetSingleton()
+{
+    static GtkSalSystem *pSingleton = new GtkSalSystem();
+    return pSingleton;
+}
+
+SalSystem *GtkInstance::CreateSalSystem()
+{
+    return GtkSalSystem::GetSingleton();
+}
+
+GtkSalSystem::GtkSalSystem() : SalGenericSystem()
+{
+    mpDisplay = gdk_display_get_default();
+    countScreenMonitors();
+    // rhbz#1285356, native look will be gtk2, which crashes
+    // when gtk3 is already loaded. Until there is a solution
+    // java-side force look and feel to something that doesn't
+    // crash when we are using gtk3
+    setenv("STOC_FORCE_SYSTEM_LAF", "true", 1);
+}
+
+GtkSalSystem::~GtkSalSystem()
+{
+}
+
+namespace
+{
+
+struct GdkRectangleCoincidentLess
+{
+    // fdo#78799 - detect and elide overlaying monitors of different sizes
+    bool operator()(GdkRectangle const& rLeft, GdkRectangle const& rRight)
+    {
+        return
+            rLeft.x < rRight.x
+            || rLeft.y < rRight.y
+            ;
+    }
+};
+struct GdkRectangleCoincident
+{
+    // fdo#78799 - detect and elide overlaying monitors of different sizes
+    bool operator()(GdkRectangle const& rLeft, GdkRectangle const& rRight)
+    {
+        return
+            rLeft.x == rRight.x
+            && rLeft.y == rRight.y
+            ;
+    }
+};
+
+}
+
+/**
+ * GtkSalSystem::countScreenMonitors()
+ *
+ * This method builds the vector which allows us to map from VCL's
+ * idea of linear integer ScreenNumber to gtk+'s rather more
+ * complicated screen + monitor concept.
+ */
+void
+GtkSalSystem::countScreenMonitors()
+{
+    maScreenMonitors.clear();
+    for (gint i = 0; i < gdk_display_get_n_screens(mpDisplay); i++)
+    {
+        GdkScreen* const pScreen(gdk_display_get_screen(mpDisplay, i));
+        gint nMonitors(pScreen ? gdk_screen_get_n_monitors(pScreen) : 0);
+        if (nMonitors > 1)
+        {
+            std::vector<GdkRectangle> aGeometries;
+            aGeometries.reserve(nMonitors);
+            for (gint j(0); j != nMonitors; ++j)
+            {
+                GdkRectangle aGeometry;
+                gdk_screen_get_monitor_geometry(pScreen, j, &aGeometry);
+                aGeometries.push_back(aGeometry);
+            }
+            std::sort(aGeometries.begin(), aGeometries.end(),
+                    GdkRectangleCoincidentLess());
+            const std::vector<GdkRectangle>::iterator aUniqueEnd(
+                    std::unique(aGeometries.begin(), aGeometries.end(),
+                    GdkRectangleCoincident()));
+            nMonitors = std::distance(aGeometries.begin(), aUniqueEnd);
+        }
+        maScreenMonitors.emplace_back(pScreen, nMonitors);
+    }
+}
+
+SalX11Screen
+GtkSalSystem::getXScreenFromDisplayScreen(unsigned int nScreen)
+{
+    gint nMonitor;
+
+    GdkScreen *pScreen = getScreenMonitorFromIdx (nScreen, nMonitor);
+    if (!pScreen)
+        return SalX11Screen (0);
+    if (!DLSYM_GDK_IS_X11_DISPLAY(mpDisplay))
+        return SalX11Screen (0);
+    return SalX11Screen (gdk_x11_screen_get_screen_number (pScreen));
+}
+
+GdkScreen *
+GtkSalSystem::getScreenMonitorFromIdx (int nIdx, gint &nMonitor)
+{
+    GdkScreen *pScreen = nullptr;
+    for (auto const& screenMonitor : maScreenMonitors)
+    {
+        pScreen = screenMonitor.first;
+        if (!pScreen)
+            break;
+        if (nIdx >= screenMonitor.second)
+            nIdx -= screenMonitor.second;
+        else
+            break;
+    }
+    nMonitor = nIdx;
+
+    // handle invalid monitor indexes as non-existent screens
+    if (nMonitor < 0 || (pScreen && nMonitor >= gdk_screen_get_n_monitors (pScreen)))
+        pScreen = nullptr;
+
+    return pScreen;
+}
+
+int
+GtkSalSystem::getScreenIdxFromPtr (GdkScreen *pScreen)
+{
+    int nIdx = 0;
+    for (auto const& screenMonitor : maScreenMonitors)
+    {
+        if (screenMonitor.first == pScreen)
+            return nIdx;
+        nIdx += screenMonitor.second;
+    }
+    g_warning ("failed to find screen %p", pScreen);
+    return 0;
+}
+
+int GtkSalSystem::getScreenMonitorIdx (GdkScreen *pScreen,
+                                       int nX, int nY)
+{
+    // TODO: this will fail horribly for exotic combinations like two
+    // monitors in mirror mode and one extra. Hopefully such
+    // abominations are not used (or, even better, not possible) in
+    // practice .-)
+    return getScreenIdxFromPtr (pScreen) +
+        gdk_screen_get_monitor_at_point (pScreen, nX, nY);
+}
+
+unsigned int GtkSalSystem::GetDisplayScreenCount()
+{
+    gint nMonitor;
+    (void)getScreenMonitorFromIdx (G_MAXINT, nMonitor);
+    return G_MAXINT - nMonitor;
+}
+
+bool GtkSalSystem::IsUnifiedDisplay()
+{
+    return gdk_display_get_n_screens (mpDisplay) == 1;
+}
+
+namespace {
+int _fallback_get_primary_monitor (GdkScreen *pScreen)
+{
+    // Use monitor name as primacy heuristic
+    int max = gdk_screen_get_n_monitors (pScreen);
+    for (int i = 0; i < max; ++i)
+    {
+        char *name = gdk_screen_get_monitor_plug_name (pScreen, i);
+        bool bLaptop = (name && !g_ascii_strncasecmp (name, "LVDS", 4));
+        g_free (name);
+        if (bLaptop)
+            return i;
+    }
+    return 0;
+}
+
+int _get_primary_monitor (GdkScreen *pScreen)
+{
+    static int (*get_fn) (GdkScreen *) = nullptr;
+    get_fn = gdk_screen_get_primary_monitor;
+    // Perhaps we have a newer gtk+ with this symbol:
+    if (!get_fn)
+    {
+        get_fn = reinterpret_cast<int(*)(GdkScreen*)>(osl_getAsciiFunctionSymbol(nullptr,
+            "gdk_screen_get_primary_monitor"));
+    }
+    if (!get_fn)
+        get_fn = _fallback_get_primary_monitor;
+    if (get_fn)
+        return get_fn (pScreen);
+    else
+        return 0;
+}
+} // end anonymous namespace
+
+unsigned int GtkSalSystem::GetDisplayBuiltInScreen()
+{
+    GdkScreen *pDefault = gdk_display_get_default_screen (mpDisplay);
+    int idx = getScreenIdxFromPtr (pDefault);
+    return idx + _get_primary_monitor (pDefault);
+}
+
+tools::Rectangle GtkSalSystem::GetDisplayScreenPosSizePixel (unsigned int nScreen)
+{
+    gint nMonitor;
+    GdkScreen *pScreen;
+    GdkRectangle aRect;
+    pScreen = getScreenMonitorFromIdx (nScreen, nMonitor);
+    if (!pScreen)
+        return tools::Rectangle();
+    gdk_screen_get_monitor_geometry (pScreen, nMonitor, &aRect);
+    return tools::Rectangle (Point(aRect.x, aRect.y), Size(aRect.width, aRect.height));
+}
+
+// convert ~ to indicate mnemonic to '_'
+static OString MapToGtkAccelerator(const OUString &rStr)
+{
+    return OUStringToOString(rStr.replaceFirst("~", "_"), RTL_TEXTENCODING_UTF8);
+}
+
+int GtkSalSystem::ShowNativeDialog (const OUString& rTitle, const OUString& rMessage,
+                                    const std::vector< OUString >& rButtonNames)
+{
+    OString aTitle (OUStringToOString (rTitle, RTL_TEXTENCODING_UTF8));
+    OString aMessage (OUStringToOString (rMessage, RTL_TEXTENCODING_UTF8));
+
+    GtkDialog *pDialog = GTK_DIALOG (
+        g_object_new (GTK_TYPE_MESSAGE_DIALOG,
+                      "title", aTitle.getStr(),
+                      "message-type", int(GTK_MESSAGE_WARNING),
+                      "text", aMessage.getStr(),
+                      nullptr));
+    int nButton = 0;
+    for (auto const& buttonName : rButtonNames)
+        gtk_dialog_add_button (pDialog, MapToGtkAccelerator(buttonName).getStr(), nButton++);
+    gtk_dialog_set_default_response (pDialog, 0/*nDefaultButton*/);
+
+    nButton = gtk_dialog_run (pDialog);
+    if (nButton < 0)
+        nButton = -1;
+
+    gtk_widget_destroy (GTK_WIDGET (pDialog));
+
+    return nButton;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */