libreofficekit/source/gtk/tilebuffer.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include "tilebuffer.hxx"
  11
  12
  13 /* ------------------
  14    Utility functions
  15    ------------------
  16 */
  17 float pixelToTwip(float fInput, float zoom)
  18 {
  19     return (fInput / DPI / zoom) * 1440.0f;
  20 }
  21
  22 float twipToPixel(float fInput, float zoom)
  23 {
  24     return fInput / 1440.0f * DPI * zoom;
  25 }
  26
  27 /* ----------------------------
  28    Tile class member functions
  29    ----------------------------
  30 */
  31 cairo_surface_t* Tile::getBuffer()
  32 {
  33     return m_pBuffer;
  34 }
  35
  36 void Tile::setSurface(cairo_surface_t *buffer)
  37 {
  38     if (m_pBuffer == buffer)
  39         return;
  40     if (m_pBuffer)
  41         cairo_surface_destroy(m_pBuffer);
  42     if (buffer != nullptr)
  43         cairo_surface_reference(buffer);
  44     m_pBuffer = buffer;
  45 }
  46
  47 /* ----------------------------------
  48    TileBuffer class member functions
  49    ----------------------------------
  50 */
  51 void TileBuffer::resetAllTiles()
  52 {
  53     std::map<int, Tile>::iterator it = m_mTiles.begin();
  54     for (; it != m_mTiles.end(); ++it)
  55     {
  56         it->second.valid = false;
  57     }
  58 }
  59
  60 void TileBuffer::setInvalid(int x, int y, float fZoom, GTask* task,
  61                             GThreadPool* lokThreadPool)
  62 {
  63     int index = x * m_nWidth + y;
  64     GError* error = nullptr;
  65     if (m_mTiles.find(index) != m_mTiles.end())
  66     {
  67         m_mTiles[index].valid = false;
  68
  69         LOEvent* pLOEvent = new LOEvent(LOK_PAINT_TILE);
  70         pLOEvent->m_nPaintTileX = x;
  71         pLOEvent->m_nPaintTileY = y;
  72         pLOEvent->m_fPaintTileZoom = fZoom;
  73         g_task_set_task_data(task, pLOEvent, LOEvent::destroy);
  74         g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
  75         if (error != nullptr)
  76         {
  77             g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
  78             g_clear_error(&error);
  79         }
  80     }
  81 }
  82
  83 Tile& TileBuffer::getTile(int x, int y, GTask* task,
  84                           GThreadPool* lokThreadPool)
  85 {
  86     int index = x * m_nWidth + y;
  87     GError* error = nullptr;
  88
  89     if (m_mTiles.find(index) != m_mTiles.end() && !m_mTiles[index].valid)
  90     {
  91         g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
  92         if (error != nullptr)
  93         {
  94             g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
  95             g_clear_error(&error);
  96         }
  97         return m_mTiles[index];
  98     }
  99     else if(m_mTiles.find(index) == m_mTiles.end())
 100     {
 101         g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
 102         if (error != nullptr)
 103         {
 104             g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
 105             g_clear_error(&error);
 106         }
 107         return m_DummyTile;
 108     }
 109
 110     return m_mTiles[index];
 111 }
 112
 113 void LOEvent::destroy(void* pMemory)
 114 {
 115     LOEvent* pLOEvent = static_cast<LOEvent*>(pMemory);
 116     delete pLOEvent;
 117 }
 118
 119 GQuark
 120 LOKTileBufferErrorQuark(void)
 121 {
 122     return g_quark_from_static_string("lok-tilebuffer-error");
 123 }
 124
 125 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */