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     for (auto & tile : m_mTiles)
  54     {
  55         tile.second.valid = false;
  56     }
  57 }
  58
  59 void TileBuffer::setInvalid(int x, int y, float fZoom, GTask* task,
  60                             GThreadPool* lokThreadPool)
  61 {
  62     int index = x * m_nWidth + y;
  63     GError* error = nullptr;
  64     if (m_mTiles.find(index) == m_mTiles.end())
  65         return;
  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 Tile& TileBuffer::getTile(int x, int y, GTask* task,
  83                           GThreadPool* lokThreadPool)
  84 {
  85     int index = x * m_nWidth + y;
  86     GError* error = nullptr;
  87
  88     if (m_mTiles.find(index) != m_mTiles.end() && !m_mTiles[index].valid)
  89     {
  90         g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
  91         if (error != nullptr)
  92         {
  93             g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
  94             g_clear_error(&error);
  95         }
  96         return m_mTiles[index];
  97     }
  98     else if(m_mTiles.find(index) == m_mTiles.end())
  99     {
 100         g_thread_pool_push(lokThreadPool, g_object_ref(task), &error);
 101         if (error != nullptr)
 102         {
 103             g_warning("Unable to call LOK_PAINT_TILE: %s", error->message);
 104             g_clear_error(&error);
 105         }
 106         return m_DummyTile;
 107     }
 108
 109     return m_mTiles[index];
 110 }
 111
 112 void TileBuffer::setTile(int x, int y, cairo_surface_t *surface)
 113 {
 114     int index = x * m_nWidth + y;
 115
 116     m_mTiles[index].setSurface(surface);
 117     m_mTiles[index].valid = true;
 118 }
 119
 120 bool TileBuffer::hasValidTile(int x, int y)
 121 {
 122     int index = x * m_nWidth + y;
 123     auto it = m_mTiles.find(index);
 124     return (it != m_mTiles.end()) && it->second.valid;
 125 }
 126
 127 void LOEvent::destroy(void* pMemory)
 128 {
 129     LOEvent* pLOEvent = static_cast<LOEvent*>(pMemory);
 130     delete pLOEvent;
 131 }
 132
 133 GQuark
 134 LOKTileBufferErrorQuark()
 135 {
 136     return g_quark_from_static_string("lok-tilebuffer-error");
 137 }
 138
 139 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */