Mercurial > hg > orthanc-stone
diff Framework/Viewport/WidgetViewport.cpp @ 0:351ab0da0150
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | ff1e935768e7 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Viewport/WidgetViewport.cpp Fri Oct 14 15:34:11 2016 +0200 @@ -0,0 +1,321 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * 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/>. + **/ + + +#include "WidgetViewport.h" + +#include "../Orthanc/Core/Images/ImageProcessing.h" +#include "../Orthanc/Core/OrthancException.h" + +namespace OrthancStone +{ + void WidgetViewport::UnregisterCentralWidget() + { + mouseTracker_.reset(NULL); + + if (centralWidget_.get() != NULL) + { + centralWidget_->Unregister(*this); + } + } + + + WidgetViewport::WidgetViewport() : + statusBar_(NULL), + isMouseOver_(false), + lastMouseX_(0), + lastMouseY_(0), + backgroundChanged_(false), + started_(false) + { + } + + + void WidgetViewport::SetStatusBar(IStatusBar& statusBar) + { + boost::mutex::scoped_lock lock(mutex_); + + statusBar_ = &statusBar; + + if (centralWidget_.get() != NULL) + { + centralWidget_->SetStatusBar(statusBar); + } + } + + + void WidgetViewport::ResetStatusBar() + { + boost::mutex::scoped_lock lock(mutex_); + + statusBar_ = NULL; + + if (centralWidget_.get() != NULL) + { + centralWidget_->ResetStatusBar(); + } + } + + + IWidget& WidgetViewport::SetCentralWidget(IWidget* widget) + { + if (started_) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + + boost::mutex::scoped_lock lock(mutex_); + + if (widget == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + + UnregisterCentralWidget(); + + centralWidget_.reset(widget); + centralWidget_->Register(*this); + + if (statusBar_ == NULL) + { + centralWidget_->ResetStatusBar(); + } + else + { + centralWidget_->SetStatusBar(*statusBar_); + } + + backgroundChanged_ = true; + + return *widget; + } + + + void WidgetViewport::NotifyChange(const IWidget& widget) + { + backgroundChanged_ = true; + observers_.NotifyChange(this); + } + + + void WidgetViewport::Start() + { + boost::mutex::scoped_lock lock(mutex_); + + if (centralWidget_.get() != NULL) + { + centralWidget_->Start(); + } + + started_ = true; + } + + + void WidgetViewport::Stop() + { + boost::mutex::scoped_lock lock(mutex_); + + started_ = false; + + if (centralWidget_.get() != NULL) + { + centralWidget_->Stop(); + } + } + + + void WidgetViewport::SetSize(unsigned int width, + unsigned int height) + { + boost::mutex::scoped_lock lock(mutex_); + + background_.SetSize(width, height); + + if (centralWidget_.get() != NULL) + { + centralWidget_->SetSize(width, height); + } + + observers_.NotifyChange(this); + } + + + bool WidgetViewport::Render(Orthanc::ImageAccessor& surface) + { + boost::mutex::scoped_lock lock(mutex_); + + if (!started_ || + centralWidget_.get() == NULL) + { + return false; + } + + if (backgroundChanged_) + { + Orthanc::ImageAccessor accessor = background_.GetAccessor(); + if (!centralWidget_->Render(accessor)) + { + return false; + } + } + + Orthanc::ImageProcessing::Copy(surface, background_.GetAccessor()); + + if (mouseTracker_.get() != NULL) + { + mouseTracker_->Render(surface); + } + else if (isMouseOver_) + { + centralWidget_->RenderMouseOver(surface, lastMouseX_, lastMouseY_); + } + + return true; + } + + + void WidgetViewport::MouseDown(MouseButton button, + int x, + int y, + KeyboardModifiers modifiers) + { + boost::mutex::scoped_lock lock(mutex_); + + if (!started_) + { + return; + } + + lastMouseX_ = x; + lastMouseY_ = y; + + if (centralWidget_.get() != NULL) + { + mouseTracker_.reset(centralWidget_->CreateMouseTracker(button, x, y, modifiers)); + } + else + { + mouseTracker_.reset(NULL); + } + + observers_.NotifyChange(this);; + } + + + void WidgetViewport::MouseUp() + { + boost::mutex::scoped_lock lock(mutex_); + + if (!started_) + { + return; + } + + if (mouseTracker_.get() != NULL) + { + mouseTracker_->MouseUp(); + mouseTracker_.reset(NULL); + observers_.NotifyChange(this);; + } + } + + + void WidgetViewport::MouseMove(int x, + int y) + { + boost::mutex::scoped_lock lock(mutex_); + + if (!started_) + { + return; + } + + lastMouseX_ = x; + lastMouseY_ = y; + + if (mouseTracker_.get() != NULL) + { + mouseTracker_->MouseMove(x, y); + } + + // The scene must be repainted + observers_.NotifyChange(this); + } + + + void WidgetViewport::MouseEnter() + { + boost::mutex::scoped_lock lock(mutex_); + isMouseOver_ = true; + observers_.NotifyChange(this); + } + + + void WidgetViewport::MouseLeave() + { + boost::mutex::scoped_lock lock(mutex_); + isMouseOver_ = false; + observers_.NotifyChange(this); + } + + + void WidgetViewport::MouseWheel(MouseWheelDirection direction, + int x, + int y, + KeyboardModifiers modifiers) + { + boost::mutex::scoped_lock lock(mutex_); + + if (!started_) + { + return; + } + + if (centralWidget_.get() != NULL && + mouseTracker_.get() == NULL) + { + centralWidget_->MouseWheel(direction, x, y, modifiers); + } + } + + + void WidgetViewport::KeyPressed(char key, + KeyboardModifiers modifiers) + { + boost::mutex::scoped_lock lock(mutex_); + + if (centralWidget_.get() != NULL && + mouseTracker_.get() == NULL) + { + centralWidget_->KeyPressed(key, modifiers); + } + } +}