1 files changed, 142 insertions, 0 deletions
diff --git a/libreofficekit/source/gtk/tilebuffer.cxx b/libreofficekit/source/gtk/tilebuffer.cxx
new file mode 100644
index 0000000000..3c73c9dddf
--- /dev/null
+++ b/libreofficekit/source/gtk/tilebuffer.cxx
@@ -0,0 +1,142 @@
+/* -*- 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/.
+ */
+
+#include "tilebuffer.hxx"
+
+#include <o3tl/unit_conversion.hxx>
+
+
+/* ------------------
+   Utility functions
+   ------------------
+*/
+// We know that VirtualDevices use a DPI of 96.
+float pixelToTwip(float fInput, float zoom)
+{
+    return o3tl::toTwips(fInput / zoom, o3tl::Length::px);
+}
+
+float twipToPixel(float fInput, float zoom)
+{
+    return o3tl::convert(fInput * zoom, o3tl::Length::twip, o3tl::Length::px);
+}
+
+/* ----------------------------
+   Tile class member functions
+   ----------------------------
+*/
+cairo_surface_t* Tile::getBuffer()
+{
+    return m_pBuffer;
+}
+
+void Tile::setSurface(cairo_surface_t *buffer)
+{
+    if (m_pBuffer == buffer)
+        return;
+    if (m_pBuffer)
+        cairo_surface_destroy(m_pBuffer);
+    if (buffer != nullptr)
+        cairo_surface_reference(buffer);
+    m_pBuffer = buffer;
+}
+
+/* ----------------------------------
+   TileBuffer class member functions
+   ----------------------------------
+*/
+void TileBuffer::resetAllTiles()
+{
+    for (auto & tile : m_mTiles)
+    {
+        tile.second.valid = false;
+    }
+}
+
+void TileBuffer::setInvalid(int x, int y, float fZoom, GTask* task,
+                            GThreadPool* lokThreadPool)
+{
+    int index = x * m_nWidth + y;
+    GError* error = nullptr;
+    if (m_mTiles.find(index) == m_mTiles.end())
+        return;
+
+    m_mTiles[index].valid = false;
+
+    LOEvent* pLOEvent = new LOEvent(LOK_PAINT_TILE);
+    pLOEvent->m_nPaintTileX = x;
+    pLOEvent->m_nPaintTileY = y;
+    pLOEvent->m_fPaintTileZoom = fZoom;
+    g_task_set_task_data(task, pLOEvent, LOEvent::destroy);
+    g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
+    if (error != nullptr)
+    {
+        g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
+        g_clear_error(&error);
+    }
+}
+
+Tile& TileBuffer::getTile(int x, int y, GTask* task,
+                          GThreadPool* lokThreadPool)
+{
+    int index = x * m_nWidth + y;
+    GError* error = nullptr;
+
+    if (m_mTiles.find(index) != m_mTiles.end() && !m_mTiles[index].valid)
+    {
+        g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
+        if (error != nullptr)
+        {
+            g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
+            g_clear_error(&error);
+        }
+        return m_mTiles[index];
+    }
+    else if(m_mTiles.find(index) == m_mTiles.end())
+    {
+        g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
+        if (error != nullptr)
+        {
+            g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
+            g_clear_error(&error);
+        }
+        return m_DummyTile;
+    }
+
+    return m_mTiles[index];
+}
+
+void TileBuffer::setTile(int x, int y, cairo_surface_t *surface)
+{
+    int index = x * m_nWidth + y;
+
+    m_mTiles[index].setSurface(surface);
+    m_mTiles[index].valid = true;
+}
+
+bool TileBuffer::hasValidTile(int x, int y)
+{
+    int index = x * m_nWidth + y;
+    auto it = m_mTiles.find(index);
+    return (it != m_mTiles.end()) && it->second.valid;
+}
+
+void LOEvent::destroy(void* pMemory)
+{
+    LOEvent* pLOEvent = static_cast<LOEvent*>(pMemory);
+    delete pLOEvent;
+}
+
+GQuark
+LOKTileBufferErrorQuark()
+{
+    return g_quark_from_static_string("lok-tilebuffer-error");
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */