C++ GraphicsEngine::QRP_1Tex方法代码示例

void PlacesOverlayVScrollBar::Draw(nux::GraphicsEngine& graphics_engine, bool force_draw)
{
  PlacesVScrollBar::Draw(graphics_engine, force_draw);

  if (connector_height_ > 0 && connector_texture_.IsValid())
  {
    int const connector_width = GetBaseWidth();
    int offset_y = 0;
    if (thumb_above_slider_)
    {
      offset_y = _slider->GetBaseY() - connector_height_;
    }
    else
    {
      offset_y = _slider->GetBaseY() + _slider->GetBaseHeight();
    }

    nux::Geometry base(_track->GetBaseX(), offset_y - 4, connector_width, connector_height_ + 5);
    nux::TexCoordXForm texxform;

    graphics_engine.QRP_1Tex(base.x,
                             base.y,
                             base.width,
                             base.height,
                             connector_texture_->GetDeviceTexture(),
                             texxform,
                             nux::color::White);
  }
}

void OverlaySpinner::Draw(nux::GraphicsEngine& GfxContext, bool force_draw)
{
  nux::Geometry const& geo = GetGeometry();
  nux::TexCoordXForm texxform;

  GfxContext.PushClippingRectangle(geo);

  nux::GetPainter().PaintBackground(GfxContext, geo);

  texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
  texxform.SetWrap(nux::TEXWRAP_REPEAT, nux::TEXWRAP_REPEAT);
  texxform.min_filter = nux::TEXFILTER_LINEAR;
  texxform.mag_filter = nux::TEXFILTER_LINEAR;

  unsigned int current_alpha_blend;
  unsigned int current_src_blend_factor;
  unsigned int current_dest_blend_factor;
  GfxContext.GetRenderStates().GetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);
  GfxContext.GetRenderStates().SetBlend(true,  GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

  nux::Geometry spin_geo(geo.x + ((geo.width - spin_->GetWidth()) / 2),
                         geo.y + ((geo.height - spin_->GetHeight()) / 2),
                         spin_->GetWidth(),
                         spin_->GetHeight());
  // Geometry (== Rect) uses integers which were rounded above,
  // hence an extra 0.5 offset for odd sizes is needed
  // because pure floating point is not being used.
  int spin_offset_w = !(geo.width % 2) ? 0 : 1;
  int spin_offset_h = !(geo.height % 2) ? 0 : 1;

  nux::Matrix4 matrix_texture;
  matrix_texture = nux::Matrix4::TRANSLATE(-spin_geo.x - (spin_geo.width + spin_offset_w) / 2.0f,
                                          -spin_geo.y - (spin_geo.height + spin_offset_h) / 2.0f, 0) * matrix_texture;
  matrix_texture = rotate_ * matrix_texture;
  matrix_texture = nux::Matrix4::TRANSLATE(spin_geo.x + (spin_geo.width + spin_offset_w) / 2.0f,
                                             spin_geo.y + (spin_geo.height + spin_offset_h) / 2.0f, 0) * matrix_texture;

  GfxContext.SetModelViewMatrix(GfxContext.GetModelViewMatrix() * matrix_texture);

  GfxContext.QRP_1Tex(spin_geo.x,
                      spin_geo.y,
                      spin_geo.width,
                      spin_geo.height,
                      spin_->GetDeviceTexture(),
                      texxform,
                      nux::color::White);

  // revert to model view matrix stack
  GfxContext.ApplyModelViewMatrix();

  GfxContext.PopClippingRectangle();

  GfxContext.GetRenderStates().SetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);

  if (!frame_timeout_)
  {
    frame_timeout_.reset(new glib::Timeout(22, sigc::mem_fun(this, &OverlaySpinner::OnFrameTimeout)));
  }
}

void HudButton::Draw(nux::GraphicsEngine& GfxContext, bool force_draw)
{
  if (skip_draw_)
    return;

  nux::Geometry const& geo = GetGeometry();
  GfxContext.PushClippingRectangle(geo);
  gPainter.PaintBackground(GfxContext, geo);

  // set up our texture mode
  nux::TexCoordXForm texxform;
  texxform.SetWrap(nux::TEXWRAP_CLAMP, nux::TEXWRAP_CLAMP);
  texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);

  // clear what is behind us
  unsigned int alpha = 0, src = 0, dest = 0;
  GfxContext.GetRenderStates().GetBlend(alpha, src, dest);
  GfxContext.GetRenderStates().SetPremultipliedBlend(nux::SRC_OVER);
  GfxContext.GetRenderStates().SetBlend(true);

  nux::Color col(nux::color::Black);
  col.alpha = 0;
  GfxContext.QRP_Color(geo.x,
                       geo.y,
                       geo.width,
                       geo.height,
                       col);

  nux::BaseTexture* texture = normal_->GetTexture();

  if (HasKeyFocus() || fake_focused())
    texture = active_->GetTexture();
  else if (HasKeyFocus())
    texture = prelight_->GetTexture();
  else if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_PRESSED)
    texture = active_->GetTexture();

  GfxContext.QRP_1Tex(geo.x,
                      geo.y,
                      texture->GetWidth(),
                      texture->GetHeight(),
                      texture->GetDeviceTexture(),
                      texxform,
                      nux::color::White);

  GfxContext.GetRenderStates().SetBlend(alpha, src, dest);

  GfxContext.PopClippingRectangle();
}

void VScrollBarOverlayWindow::Draw(nux::GraphicsEngine& graphics_engine, bool force_draw)
{
  if (!thumb_texture_)
    return;

  nux::Geometry base(0, mouse_offset_y_, THUMB_WIDTH.CP(scale), THUMB_HEIGHT.CP(scale));
  nux::TexCoordXForm texxform;

  graphics_engine.QRP_1Tex(base.x,
                           base.y,
                           base.width,
                           base.height,
                           thumb_texture_->GetDeviceTexture(),
                           texxform,
                           nux::color::White);
}

void ScopeBarIcon::Draw(nux::GraphicsEngine& graphics_engine, bool force_draw)
{
  nux::Geometry const& geo = GetGeometry();

  graphics_engine.PushClippingRectangle(geo);

  if (HasKeyFocus() && focus_layer_)
  {
    nux::Geometry geo(GetGeometry());
    nux::AbstractPaintLayer* layer = focus_layer_.get();

    layer->SetGeometry(geo);
    layer->Renderlayer(graphics_engine);
  }

  if (texture())
  {
    unsigned int current_alpha_blend;
    unsigned int current_src_blend_factor;
    unsigned int current_dest_blend_factor;
    graphics_engine.GetRenderStates().GetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);
    graphics_engine.GetRenderStates().SetBlend(true, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

    float opacity = active ? 1.0f : inactive_opacity_;
    int width = 0, height = 0;
    GetTextureSize(&width, &height);

    nux::TexCoordXForm texxform;
    texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
    texxform.SetWrap(nux::TEXWRAP_CLAMP_TO_BORDER, nux::TEXWRAP_CLAMP_TO_BORDER);

    graphics_engine.QRP_1Tex(geo.x + ((geo.width - width) / 2),
                         geo.y + ((geo.height - height) / 2),
                         width,
                         height,
                         texture()->GetDeviceTexture(),
                         texxform,
                         nux::color::White * opacity);

    graphics_engine.GetRenderStates().SetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);
  }

  graphics_engine.PopClippingRectangle();
}

void
PlacesVScrollBar::DrawScrollbar(nux::GraphicsEngine& graphics_engine)
{
  // check if textures have been computed... if they haven't, exit function
  if (!slider_texture_)
    return;

  nux::Color color = nux::color::White;
  nux::Geometry const& base  = GetGeometry();
  nux::TexCoordXForm texxform;

  graphics_engine.PushClippingRectangle(base);
  unsigned int alpha = 0, src = 0, dest = 0;
  graphics_engine.GetRenderStates().GetBlend(alpha, src, dest);


  texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_SCALE_COORD);

  graphics_engine.GetRenderStates().SetBlend(true);
  graphics_engine.GetRenderStates().SetPremultipliedBlend(nux::SRC_OVER);

  if (content_height_ > container_height_)
  {
    nux::Geometry const& slider_geo = _slider->GetGeometry();

    graphics_engine.QRP_1Tex(slider_geo.x,
                        slider_geo.y,
                        slider_geo.width,
                        slider_geo.height,
                        slider_texture_->GetDeviceTexture(),
                        texxform,
                        color);
  }

  graphics_engine.PopClippingRectangle();
  graphics_engine.GetRenderStates().SetBlend(alpha, src, dest);
}

void
PanelView::Draw(nux::GraphicsEngine& GfxContext, bool force_draw)
{
  nux::Geometry const& geo = GetGeometry();
  UpdateBackground();

  bool overlay_mode = InOverlayMode();
  GfxContext.PushClippingRectangle(geo);

  if (IsTransparent())
  {
    nux::Geometry const& geo_absolute = GetAbsoluteGeometry();

    if (BackgroundEffectHelper::blur_type != BLUR_NONE)
    {
      bg_blur_texture_ = bg_effect_helper_.GetBlurRegion();
    }
    else
    {
      bg_blur_texture_ = bg_effect_helper_.GetRegion();
    }

    if (bg_blur_texture_.IsValid())
    {
      nux::TexCoordXForm texxform_blur_bg;
      texxform_blur_bg.flip_v_coord = true;
      texxform_blur_bg.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
      texxform_blur_bg.uoffset = geo.x / static_cast<float>(geo_absolute.width);
      texxform_blur_bg.voffset = geo.y / static_cast<float>(geo_absolute.height);

      nux::ROPConfig rop;
      rop.Blend = false;
      rop.SrcBlend = GL_ONE;
      rop.DstBlend = GL_ONE_MINUS_SRC_ALPHA;

      GfxContext.PushClippingRectangle(geo);

#ifndef NUX_OPENGLES_20
      if (GfxContext.UsingGLSLCodePath())
        gPainter.PushDrawCompositionLayer(GfxContext, geo,
                                          bg_blur_texture_,
                                          texxform_blur_bg,
                                          nux::color::White,
                                          WindowManager::Default().average_color(),
                                          nux::LAYER_BLEND_MODE_OVERLAY,
                                          true, rop);
      else
        gPainter.PushDrawTextureLayer(GfxContext, geo,
                                      bg_blur_texture_,
                                      texxform_blur_bg,
                                      nux::color::White,
                                      true,
                                      rop);
#else
        gPainter.PushDrawCompositionLayer(GfxContext, geo,
                                          bg_blur_texture_,
                                          texxform_blur_bg,
                                          nux::color::White,
                                          WindowManager::Default().average_color(),
                                          nux::LAYER_BLEND_MODE_OVERLAY,
                                          true, rop);
#endif

      GfxContext.PopClippingRectangle();
    }

    if (overlay_mode && !Settings::Instance().GetLowGfxMode())
    {
      nux::GetPainter().RenderSinglePaintLayer(GfxContext, geo, bg_darken_layer_.get());

      GfxContext.GetRenderStates().SetBlend(true, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
      nux::TexCoordXForm refine_texxform;

      int refine_x_pos = geo.x + (stored_dash_width_ - refine_gradient_midpoint);

      refine_x_pos += unity::Settings::Instance().LauncherWidth(monitor_);
      GfxContext.QRP_1Tex(refine_x_pos, geo.y,
                          bg_refine_tex_->GetWidth(),
                          bg_refine_tex_->GetHeight(),
                          bg_refine_tex_->GetDeviceTexture(),
                          refine_texxform, nux::color::White);

      GfxContext.QRP_1Tex(refine_x_pos + bg_refine_tex_->GetWidth(),
                          geo.y, geo.width, geo.height,
                          bg_refine_single_column_tex_->GetDeviceTexture(),
                          refine_texxform, nux::color::White);
    }
  }

  if (!overlay_mode || !GfxContext.UsingGLSLCodePath())
    nux::GetPainter().RenderSinglePaintLayer(GfxContext, geo, bg_layer_.get());

  GfxContext.PopClippingRectangle();

  if (needs_geo_sync_)
  {
    SyncGeometries();
    needs_geo_sync_ = false;
  }
}

void RatingsButton::Draw(nux::GraphicsEngine& GfxContext, bool force_draw)
{
  int rating =  static_cast<int>(GetRating() * NUM_STARS);
  // FIXME: 9/26/2011
  // We should probably support an API for saying whether the ratings
  // should or shouldn't support half stars...but our only consumer at
  // the moment is the applications scope which according to design
  // (Bug #839759) shouldn't. So for now just force rounding.
  //    int total_half_stars = rating % 2;
  //    int total_full_stars = rating / 2;
  int total_full_stars = rating;

  nux::Geometry const& geo = GetGeometry();
  nux::Geometry geo_star(geo);
  geo_star.width = star_size_.CP(scale);
  geo_star.height = star_size_.CP(scale);

  gPainter.PaintBackground(GfxContext, geo);
  // set up our texture mode
  nux::TexCoordXForm texxform;
  texxform.SetWrap(nux::TEXWRAP_CLAMP_TO_BORDER, nux::TEXWRAP_CLAMP_TO_BORDER);
  texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_SCALE_COORD);
  texxform.SetFilter(nux::TEXFILTER_LINEAR, nux::TEXFILTER_LINEAR);

  // clear what is behind us
  unsigned int alpha = 0, src = 0, dest = 0;

  GfxContext.GetRenderStates().GetBlend(alpha, src, dest);
  GfxContext.GetRenderStates().SetBlend(true, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

  nux::Color col = nux::color::Black;
  col.alpha = 0;
  GfxContext.QRP_Color(geo.x,
                       geo.y,
                       geo.width,
                       geo.height,
                       col);

  for (int index = 0; index < NUM_STARS; ++index)
  {
    dash::Style& style = dash::Style::Instance();
    auto texture = style.GetStarSelectedIcon();
    if (index < total_full_stars)
    {
      if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_NORMAL)
        texture = style.GetStarSelectedIcon();
      else if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_PRELIGHT)
        texture = style.GetStarSelectedIcon();
      else if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_PRESSED)
        texture = style.GetStarSelectedIcon();
    }
    else
    {
      if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_NORMAL)
        texture = style.GetStarDeselectedIcon();
      else if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_PRELIGHT)
        texture = style.GetStarDeselectedIcon();
      else if (GetVisualState() == nux::ButtonVisualState::VISUAL_STATE_PRESSED)
        texture = style.GetStarDeselectedIcon();
    }

    GfxContext.QRP_1Tex(geo_star.x,
                        geo_star.y,
                        geo_star.width,
                        geo_star.height,
                        texture->GetDeviceTexture(),
                        texxform,
                        nux::Color(1.0f, 1.0f, 1.0f, 1.0f));

    if (focused_star_ == index)
    {
      GfxContext.QRP_1Tex(geo_star.x,
                          geo_star.y,
                          geo_star.width,
                          geo_star.height,
                          style.GetStarHighlightIcon()->GetDeviceTexture(),
                          texxform,
                          nux::Color(1.0f, 1.0f, 1.0f, 0.5f));
    }

    geo_star.x += geo_star.width + star_gap_.CP(scale);

  }

  GfxContext.GetRenderStates().SetBlend(alpha, src, dest);

}

void IconTexture::Draw(nux::GraphicsEngine& GfxContext, bool force_draw)
{
  unsigned int current_alpha_blend;
  unsigned int current_src_blend_factor;
  unsigned int current_dest_blend_factor;
  GfxContext.GetRenderStates().GetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);
  GfxContext.GetRenderStates().SetBlend(true, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

  nux::Geometry geo = GetGeometry();

  GfxContext.PushClippingRectangle(geo);

  nux::GetPainter().PaintBackground(GfxContext, geo);

  if (_texture_cached)
  {
    nux::Color col(1.0f * _opacity, 1.0f * _opacity, 1.0f * _opacity, _opacity);
    nux::TexCoordXForm texxform;

    if (_draw_mode == DrawMode::STRETCH_WITH_ASPECT)
    {
      nux::Geometry imageDest = geo;
      
      float geo_apsect = float(geo.GetWidth()) / geo.GetHeight();
      float image_aspect = float(_texture_cached->GetWidth()) / _texture_cached->GetHeight();

      if (image_aspect > geo_apsect)
      {
        imageDest.SetHeight(float(imageDest.GetWidth()) / image_aspect);
      } 
      if (image_aspect < geo_apsect)
      {
        imageDest.SetWidth(image_aspect * imageDest.GetHeight());
      }
      else
      {
        imageDest = nux::Geometry(0, 0, _texture_cached->GetWidth(), _texture_cached->GetHeight());
      }

      texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_SCALE_COORD);
      texxform.SetWrap(nux::TEXWRAP_CLAMP_TO_BORDER, nux::TEXWRAP_CLAMP_TO_BORDER);
      texxform.SetFilter(nux::TEXFILTER_LINEAR, nux::TEXFILTER_LINEAR);

      texxform.u0 = 0;
      texxform.v0 = 0;
      texxform.u1 = imageDest.width;
      texxform.v1 = imageDest.height;

      int border_width = 1;
      GfxContext.QRP_1Tex(geo.x + (float(geo.GetWidth() - imageDest.GetWidth()) / 2) + border_width,
                          geo.y + (float(geo.GetHeight() - imageDest.GetHeight()) / 2) + border_width,
                          imageDest.width - (border_width * 2),
                          imageDest.height - (border_width * 2),
                          _texture_cached.GetPointer()->GetDeviceTexture(),
                          texxform,
                          col);
    }
    else
    {
      texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
      texxform.SetWrap(nux::TEXWRAP_CLAMP_TO_BORDER, nux::TEXWRAP_CLAMP_TO_BORDER);

      GfxContext.QRP_1Tex(geo.x + ((geo.width - _texture_size.width) / 2),
                          geo.y + ((geo.height - _texture_size.height) / 2),
                          _texture_size.width,
                          _texture_size.height,
                          _texture_cached->GetDeviceTexture(),
                          texxform,
                          col);
    }
  }

  GfxContext.PopClippingRectangle();

  GfxContext.GetRenderStates().SetBlend(current_alpha_blend, current_src_blend_factor, current_dest_blend_factor);
}