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     //Update if the item is dirty and we haven't done an updateTexture for this frame
  43     if (m_item && m_item->m_damaged && !m_textureUpdated) {
  44         m_item->updateTexture();
  45         updateTexture();
  46     }
  47     //Reset value for next frame: we have not done updatePaintNode yet
  48     m_textureUpdated = false;
  49 }
  50
  51 void WaylandSurfaceNode::updateTexture()
  52 {
  53     Q_ASSERT(m_item && m_item->textureProvider());
  54
  55     //If m_item->useTextureAlpha has changed to true use m_texureMaterial
  56     //otherwise use m_opaqueTextureMaterial.
  57     if (m_item->useTextureAlpha() != m_useTextureAlpha) {
  58         m_useTextureAlpha = m_item->useTextureAlpha();
  59         if (m_useTextureAlpha) {
  60             m_currentMaterial = m_textureMaterial;
  61         } else {
  62             m_currentMaterial = m_opaqueTextureMaterial;
  63         }
  64         setMaterial(m_currentMaterial);
  65     }
  66
  67     QSGTexture *texture = m_item->textureProvider()->texture();
  68     setTexture(texture);
  69 }
  70
  71 void WaylandSurfaceNode::setRect(const QRectF &rect)
  72 {
  73     if (m_rect == rect)
  74         return;
  75     m_rect = rect;
  76
  77     if (texture()) {
  78         QSize ts = texture()->textureSize();
  79         QRectF sourceRect(0, 0, ts.width(), ts.height());
  80         QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_rect, texture()->convertToNormalizedSourceRect(sourceRect));
  81     }
  82 }
  83
  84 void WaylandSurfaceNode::setTexture(QSGTexture *texture)
  85 {
  86     if (m_currentMaterial->state()->texture() == texture)
  87         return;
  88     m_currentMaterial->state()->setTexture(texture);
  89
  90     QSize ts = texture->textureSize();
  91     QRectF sourceRect(0, 0, ts.width(), ts.height());
  92     QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_rect, texture->convertToNormalizedSourceRect(sourceRect));
  93     markDirty(DirtyMaterial);
  94 }
  95
  96 QSGTexture *WaylandSurfaceNode::texture() const
  97 {
  98     return m_currentMaterial->state()->texture();
  99 }
 100
 101 void WaylandSurfaceNode::setItem(WaylandSurfaceItem *item)
 102 {
 103     m_item = item;
 104 }