src/compositor/compositor_api/waylandsurfacenode.cpp

   1 #include "waylandsurfacenode.h"
   2 #include "waylandsurfaceitem.h"
   3
   4 #include <QtCore/QMutexLocker>
   5 #include <QtQuick/QSGTexture>
   6 #include <QtQuick/QSGSimpleTextureNode>
   7 #include <QtQuick/QSGFlatColorMaterial>
   8
   9 WaylandSurfaceNode::WaylandSurfaceNode(WaylandSurfaceItem *item)
  10     : m_item(item)
  11     , m_textureUpdated(false)
  12     , m_useTextureAlpha(false)
  13     , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
  14 {
  15     m_textureMaterial = WaylandSurfaceTextureMaterial::createMaterial();
  16     m_opaqueTextureMaterial = WaylandSurfaceTextureOpaqueMaterial::createMaterial();
  17
  18     m_currentMaterial = m_opaqueTextureMaterial;
  19
  20     setGeometry(&m_geometry);
  21     setMaterial(m_currentMaterial);
  22
  23     if (m_item)
  24         m_item->m_node = this;
  25     setFlag(UsePreprocess,true);
  26 }
  27
  28
  29 WaylandSurfaceNode::~WaylandSurfaceNode()
  30 {
  31     QMutexLocker locker(WaylandSurfaceItem::mutex);
  32     if (m_item)
  33         m_item->m_node = 0;
  34     delete m_textureMaterial;
  35     delete m_opaqueTextureMaterial;
  36 }
  37
  38 void WaylandSurfaceNode::preprocess()
  39 {
  40     QMutexLocker locker(WaylandSurfaceItem::mutex);
  41
  42     if (m_item && m_item->surface()) {
  43         //Update if the item is dirty and we haven't done an updateTexture for this frame
  44         if (m_item->m_damaged && !m_textureUpdated) {
  45             m_item->updateTexture();
  46             updateTexture();
  47         }
  48     }
  49     //Reset value for next frame: we have not done updatePaintNode yet
  50     m_textureUpdated = false;
  51 }
  52
  53 void WaylandSurfaceNode::updateTexture()
  54 {
  55     Q_ASSERT(m_item && m_item->textureProvider());
  56
  57     //If m_item->useTextureAlpha has changed to true use m_texureMaterial
  58     //otherwise use m_opaqueTextureMaterial.
  59     if (m_item->useTextureAlpha() != m_useTextureAlpha) {
  60         m_useTextureAlpha = m_item->useTextureAlpha();
  61         if (m_useTextureAlpha) {
  62             m_currentMaterial = m_textureMaterial;
  63         } else {
  64             m_currentMaterial = m_opaqueTextureMaterial;
  65         }
  66         setMaterial(m_currentMaterial);
  67     }
  68
  69     QSGTexture *texture = m_item->textureProvider()->texture();
  70     setTexture(texture);
  71 }
  72
  73 void WaylandSurfaceNode::setRect(const QRectF &rect)
  74 {
  75     if (m_rect == rect)
  76         return;
  77     m_rect = rect;
  78
  79     if (texture()) {
  80         QSize ts = texture()->textureSize();
  81         QRectF sourceRect(0, 0, ts.width(), ts.height());
  82         QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_rect, texture()->convertToNormalizedSourceRect(sourceRect));
  83     }
  84 }
  85
  86 void WaylandSurfaceNode::setTexture(QSGTexture *texture)
  87 {
  88     if (m_currentMaterial->state()->texture() == texture)
  89         return;
  90     m_currentMaterial->state()->setTexture(texture);
  91
  92     QSize ts = texture->textureSize();
  93     QRectF sourceRect(0, 0, ts.width(), ts.height());
  94     QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_rect, texture->convertToNormalizedSourceRect(sourceRect));
  95     markDirty(DirtyMaterial);
  96 }
  97
  98 QSGTexture *WaylandSurfaceNode::texture() const
  99 {
 100     return m_currentMaterial->state()->texture();
 101 }
 102
 103 void WaylandSurfaceNode::setItem(WaylandSurfaceItem *item)
 104 {
 105     m_item = item;
 106 }