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-rw-r--r--libreofficekit/source/gtk/tilebuffer.cxx139
1 files changed, 139 insertions, 0 deletions
diff --git a/libreofficekit/source/gtk/tilebuffer.cxx b/libreofficekit/source/gtk/tilebuffer.cxx
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index 000000000..82f0253d9
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+++ b/libreofficekit/source/gtk/tilebuffer.cxx
@@ -0,0 +1,139 @@
+/* -*- 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"
+
+
+/* ------------------
+ Utility functions
+ ------------------
+*/
+float pixelToTwip(float fInput, float zoom)
+{
+ return (fInput / DPI / zoom) * 1440.0f;
+}
+
+float twipToPixel(float fInput, float zoom)
+{
+ return fInput / 1440.0f * DPI * zoom;
+}
+
+/* ----------------------------
+ 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())
+ {
+ 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: */