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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2012 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Marco Trevisan <3v1n0@ubuntu.com>
*/
#include <Nux/Nux.h>
#include <Nux/WindowCompositor.h>
#include "unity-shared/AnimationUtils.h"
#include "unity-shared/CairoTexture.h"
#include "unity-shared/UnitySettings.h"
#include "CairoBaseWindow.h"
namespace unity
{
namespace
{
const int ANCHOR_WIDTH = 14;
const int ANCHOR_HEIGHT = 18;
const int CORNER_RADIUS = 4;
const int PADDING = 15;
const int TEXT_PADDING = 8;
const int MINIMUM_TEXT_WIDTH = 100;
const int TOP_SIZE = 0;
const int FADE_DURATION = 80;
}
NUX_IMPLEMENT_OBJECT_TYPE(CairoBaseWindow);
CairoBaseWindow::CairoBaseWindow(int monitor)
: cv_(Settings::Instance().em(monitor))
, use_blurred_background_(!Settings::Instance().GetLowGfxMode())
, compute_blur_bkg_(use_blurred_background_)
, fade_animator_(FADE_DURATION)
{
SetWindowSizeMatchLayout(true);
sigVisible.connect([this] (BaseWindow*) { compute_blur_bkg_ = true; });
fade_animator_.updated.connect(sigc::mem_fun(this, &BaseWindow::SetOpacity));
fade_animator_.finished.connect([this] {
if (animation::GetDirection(fade_animator_) == animation::Direction::BACKWARD)
{
ShowWindow(false);
hidden.emit();
}
});
}
void CairoBaseWindow::Show()
{
animation::StartOrReverse(fade_animator_, animation::Direction::FORWARD);
ShowWindow(true);
PushToFront();
}
void CairoBaseWindow::Hide()
{
animation::StartOrReverse(fade_animator_, animation::Direction::BACKWARD);
}
void CairoBaseWindow::RedrawBlur()
{
compute_blur_bkg_ = true;
QueueDraw();
}
bool CairoBaseWindow::HasBlurredBackground() const
{
return use_blurred_background_;
}
void CairoBaseWindow::Draw(nux::GraphicsEngine& gfxContext, bool forceDraw)
{
nux::Geometry base(GetGeometry());
// Get the background and apply some blur
if (use_blurred_background_ && compute_blur_bkg_)
{
auto current_fbo = nux::GetGraphicsDisplay()->GetGpuDevice()->GetCurrentFrameBufferObject();
nux::GetWindowCompositor ().RestoreMainFramebuffer();
gfxContext.SetViewport(0, 0, gfxContext.GetWindowWidth(), gfxContext.GetWindowHeight());
gfxContext.SetScissor(0, 0, gfxContext.GetWindowWidth(), gfxContext.GetWindowHeight());
gfxContext.GetRenderStates().EnableScissor(false);
nux::ObjectPtr <nux::IOpenGLBaseTexture> bkg_texture = gfxContext.CreateTextureFromBackBuffer(base.x, base.y, base.width, base.height);
nux::TexCoordXForm texxform_bkg;
bg_blur_texture_ = gfxContext.QRP_GetBlurTexture(0, 0, base.width, base.height, bkg_texture, texxform_bkg, nux::color::White, 1.0f, 3);
if (current_fbo.IsValid())
{
current_fbo->Activate(true);
gfxContext.Push2DWindow(current_fbo->GetWidth(), current_fbo->GetHeight());
}
else
{
gfxContext.SetViewport(0, 0, gfxContext.GetWindowWidth(), gfxContext.GetWindowHeight());
gfxContext.Push2DWindow(gfxContext.GetWindowWidth(), gfxContext.GetWindowHeight());
gfxContext.ApplyClippingRectangle();
}
compute_blur_bkg_ = false;
}
// the elements position inside the window are referenced to top-left window
// corner. So bring base to (0, 0).
base.SetX(0);
base.SetY(0);
gfxContext.PushClippingRectangle(base);
/*"Clear" out the background. Blending is disabled if blur is disabled. This might need to change, but for the moment both classes
* which are children of CairoBaseWindow don't have any alpha blending when not using the blurred texture.*/
nux::ROPConfig rop;
rop.Blend = use_blurred_background_;
rop.SrcBlend = GL_ONE;
rop.DstBlend = GL_ONE_MINUS_SRC_ALPHA;
nux::ColorLayer layer(nux::Color(0x00000000), use_blurred_background_, rop);
nux::GetPainter().PushDrawLayer(gfxContext, base, &layer);
nux::TexCoordXForm texxform_bg;
texxform_bg.SetWrap(nux::TEXWRAP_CLAMP, nux::TEXWRAP_CLAMP);
texxform_bg.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
nux::TexCoordXForm texxform_mask;
texxform_mask.SetWrap(nux::TEXWRAP_CLAMP, nux::TEXWRAP_CLAMP);
texxform_mask.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
nux::GetWindowThread()->GetGraphicsEngine().GetRenderStates().SetBlend(true);
nux::GetWindowThread()->GetGraphicsEngine().GetRenderStates().SetPremultipliedBlend(nux::SRC_OVER);
if (bg_blur_texture_.IsValid() && texture_mask_.IsValid())
{
nux::TexCoordXForm texxform_blur_bkg;
gfxContext.QRP_2TexMod(
base.x,
base.y,
base.width,
base.height,
bg_blur_texture_,
texxform_blur_bkg,
nux::color::White,
texture_mask_->GetDeviceTexture(),
texxform_mask,
nux::color::White);
}
if (texture_bg_.IsValid() && texture_mask_.IsValid())
{
gfxContext.QRP_2TexMod(base.x,
base.y,
base.width,
base.height,
texture_bg_->GetDeviceTexture(),
texxform_bg,
nux::color::White,
texture_mask_->GetDeviceTexture(),
texxform_mask,
nux::color::White);
}
if (texture_outline_.IsValid())
{
nux::TexCoordXForm texxform;
texxform.SetWrap(nux::TEXWRAP_CLAMP, nux::TEXWRAP_CLAMP);
texxform.SetTexCoordType(nux::TexCoordXForm::OFFSET_COORD);
gfxContext.QRP_1Tex(base.x,
base.y,
base.width,
base.height,
texture_outline_->GetDeviceTexture(),
texxform,
nux::color::White);
}
nux::GetWindowThread()->GetGraphicsDisplay().GetGraphicsEngine()->GetRenderStates().SetBlend(false);
nux::GetPainter().PopBackground();
gfxContext.PopClippingRectangle();
}
} // namespace nux
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