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#include "nmWxVTKRenderContainerWidget.h"
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#include "nmVTKCameraController.h"
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#include "nmVTKImageExporter.h"
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#include "nmVTKInteractionManager.h"
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#include "nmVTKScene.h"
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#include "nmVTKViewCommandController.h"
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#include <QCoreApplication>
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#include <QEvent>
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#include <QFileDialog>
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#include <QLabel>
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#include <QMenu>
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#include <QMessageBox>
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#include <QMouseEvent>
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#include <QStackedWidget>
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#include <QThread>
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#include <QVBoxLayout>
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#include <QVTKWidget.h>
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#include <vtkAutoInit.h>
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VTK_MODULE_INIT(vtkRenderingOpenGL)
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VTK_MODULE_INIT(vtkInteractionStyle)
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#include <vtkRenderer.h>
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#include <vtkRenderWindow.h>
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#include <vtkRenderWindowInteractor.h>
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nmWxVTKRenderContainerWidget::nmWxVTKRenderContainerWidget(QWidget* pParent)
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: QWidget(pParent),
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m_pMainLayout(NULL),
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m_pStateStack(NULL),
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m_pStatePage(NULL),
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m_pStateLabel(NULL),
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m_pVtkWidget(NULL),
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m_pRenderer(NULL),
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m_pScene(NULL),
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m_pCameraController(NULL),
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m_pInteractionManager(NULL),
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m_pImageExporter(NULL),
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m_pViewCommandController(NULL)
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{
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Q_ASSERT(isGuiThread());
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// 1. 先创建稳定布局和状态页,避免无数据时改变容器尺寸。
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m_pMainLayout = new QVBoxLayout(this);
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m_pMainLayout->setContentsMargins(0, 0, 0, 0);
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m_pMainLayout->setSpacing(0);
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m_pStateStack = new QStackedWidget(this);
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m_pStatePage = new QWidget(m_pStateStack);
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m_pStateLabel = new QLabel(m_pStatePage);
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QVBoxLayout* pStateLayout = new QVBoxLayout(m_pStatePage);
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pStateLayout->setContentsMargins(24, 24, 24, 24);
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pStateLayout->addStretch();
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m_pStateLabel->setAlignment(Qt::AlignCenter);
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m_pStateLabel->setWordWrap(true);
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pStateLayout->addWidget(m_pStateLabel);
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pStateLayout->addStretch();
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// 2. QVTKWidget 由 Qt 父子关系拥有,并作为就绪状态页面。
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m_pVtkWidget = new QVTKWidget(m_pStateStack);
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m_pStateStack->addWidget(m_pVtkWidget);
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m_pStateStack->addWidget(m_pStatePage);
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m_pMainLayout->addWidget(m_pStateStack);
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// 3、4. RenderWindow 属于 QVTKWidget;Renderer 由本容器智能指针独占。
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vtkRenderWindow* pRenderWindow = getRenderWindow();
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vtkRenderWindowInteractor* pInteractor = getInteractor();
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m_pRenderer = vtkSmartPointer<vtkRenderer>::New();
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if(pRenderWindow != NULL && m_pRenderer != NULL) {
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pRenderWindow->AddRenderer(m_pRenderer);
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m_pRenderer->SetGradientBackground(true);
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m_pRenderer->SetBackground(0.67, 0.82, 0.94);
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m_pRenderer->SetBackground2(0.0, 0.5, 1.0);
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}
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// 5. 管理对象、图片服务和命令对象均只服务当前容器实例。
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m_pScene = new nmVTKScene(m_pRenderer);
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m_pCameraController = new nmVTKCameraController(m_pRenderer);
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m_pInteractionManager = new nmVTKInteractionManager();
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m_pImageExporter = new nmVTKImageExporter();
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m_pImageExporter->setRenderWindow(pRenderWindow);
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m_pViewCommandController =
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new nmVTKViewCommandController(this, this);
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m_pViewCommandController->setCapabilities(
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nmVTKViewCommandController::ViewCommand_ZoomIn |
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nmVTKViewCommandController::ViewCommand_ZoomOut |
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nmVTKViewCommandController::ViewCommand_Fit |
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nmVTKViewCommandController::ViewCommand_Top |
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nmVTKViewCommandController::ViewCommand_Front |
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nmVTKViewCommandController::ViewCommand_Right |
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nmVTKViewCommandController::ViewCommand_Isometric |
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nmVTKViewCommandController::ViewCommand_ResetRotationCenter |
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nmVTKViewCommandController::ViewCommand_SaveImage |
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nmVTKViewCommandController::ViewCommand_CopyImage |
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nmVTKViewCommandController::ViewCommand_Print |
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nmVTKViewCommandController::ViewCommand_PrintPreview);
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// 命令控制器负责菜单顺序,容器继续向业务层转发同一个扩展时机。
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connect(m_pViewCommandController,
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SIGNAL(contextMenuAboutToShow(QMenu*)),
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this, SIGNAL(contextMenuAboutToShow(QMenu*)));
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const bool bInteractionReady =
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m_pInteractionManager->bindInteractor(pInteractor);
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// 6. 只接管右键菜单,左键、中键和滚轮继续交给 VTK。
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m_pVtkWidget->installEventFilter(this);
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// 7. 基础 VTK 对象完整时进入就绪页,否则保留明确错误状态。
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if(pRenderWindow != NULL && m_pRenderer != NULL && bInteractionReady) {
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showReadyState();
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} else {
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showErrorState(tr("Unable to initialize the render view."));
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}
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}
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nmWxVTKRenderContainerWidget::~nmWxVTKRenderContainerWidget()
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{
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Q_ASSERT(isGuiThread());
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// 1. 先阻止新的右键菜单回调进入销毁中的对象。
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if(m_pVtkWidget != NULL) {
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m_pVtkWidget->removeEventFilter(this);
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}
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// 先销毁 QAction,避免后续服务拆除期间再触发容器槽函数。
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if(m_pViewCommandController != NULL) {
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delete m_pViewCommandController;
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m_pViewCommandController = NULL;
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}
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// 图片服务不拥有 RenderWindow,先解除引用再销毁服务。
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if(m_pImageExporter != NULL) {
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m_pImageExporter->setRenderWindow(NULL);
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delete m_pImageExporter;
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m_pImageExporter = NULL;
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}
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// 2. Interactor 必须先释放对默认 Style 的 VTK 引用。
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if(m_pInteractionManager != NULL) {
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m_pInteractionManager->unbindInteractor();
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delete m_pInteractionManager;
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m_pInteractionManager = NULL;
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}
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// 3. Scene 在 Renderer 移除前清空所有 Layer 和 Prop。
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if(m_pScene != NULL) {
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m_pScene->clear();
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delete m_pScene;
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m_pScene = NULL;
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}
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// 4. 相机控制器仅解除 Renderer 非所有权引用。
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if(m_pCameraController != NULL) {
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m_pCameraController->setRenderer(NULL);
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delete m_pCameraController;
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m_pCameraController = NULL;
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}
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// 5、6. 最后从 RenderWindow 移除并释放当前实例 Renderer。
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vtkRenderWindow* pRenderWindow = getRenderWindow();
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if(pRenderWindow != NULL && m_pRenderer != NULL) {
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pRenderWindow->RemoveRenderer(m_pRenderer);
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}
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m_pRenderer = NULL;
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// 7. QVTKWidget、状态页和布局随后由 Qt 父子关系自动销毁。
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}
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QVTKWidget* nmWxVTKRenderContainerWidget::getVtkWidget() const
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{
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return m_pVtkWidget;
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}
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vtkRenderer* nmWxVTKRenderContainerWidget::getRenderer() const
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{
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return m_pRenderer;
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}
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vtkRenderWindow* nmWxVTKRenderContainerWidget::getRenderWindow() const
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{
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return m_pVtkWidget != NULL ? m_pVtkWidget->GetRenderWindow() : NULL;
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}
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vtkRenderWindowInteractor*
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nmWxVTKRenderContainerWidget::getInteractor() const
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{
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vtkRenderWindow* pRenderWindow = getRenderWindow();
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return pRenderWindow != NULL ? pRenderWindow->GetInteractor() : NULL;
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}
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nmVTKScene* nmWxVTKRenderContainerWidget::getScene() const
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{
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return m_pScene;
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}
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nmVTKViewCommandController*
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nmWxVTKRenderContainerWidget::getViewCommandController() const
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{
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return m_pViewCommandController;
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}
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void nmWxVTKRenderContainerWidget::setViewCommandCapabilities(
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nmVTKViewCommandController::ViewCommands eCommands)
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{
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if(m_pViewCommandController != NULL) {
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m_pViewCommandController->setCapabilities(eCommands);
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}
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}
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bool nmWxVTKRenderContainerWidget::installInteractionStyle(
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vtkInteractorStyle* pStyle)
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{
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Q_ASSERT(isGuiThread());
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return isGuiThread() && m_pInteractionManager != NULL &&
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m_pInteractionManager->installInteractionStyle(pStyle);
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}
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bool nmWxVTKRenderContainerWidget::restoreDefaultInteraction()
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{
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Q_ASSERT(isGuiThread());
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return isGuiThread() && m_pInteractionManager != NULL &&
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m_pInteractionManager->restoreDefaultInteraction();
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}
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void nmWxVTKRenderContainerWidget::clearInteractionStyle()
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{
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Q_ASSERT(isGuiThread());
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if(isGuiThread() && m_pInteractionManager != NULL) {
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m_pInteractionManager->clearInteractionStyle();
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}
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}
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void nmWxVTKRenderContainerWidget::renderView()
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{
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Q_ASSERT(isGuiThread());
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vtkRenderWindow* pRenderWindow = getRenderWindow();
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// Scene、Layer 和相机均不隐式渲染,批量更新最终汇聚到此入口。
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if(isGuiThread() && pRenderWindow != NULL) {
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pRenderWindow->Render();
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}
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}
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bool nmWxVTKRenderContainerWidget::fitTopViewWithoutRender()
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{
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Q_ASSERT(isGuiThread());
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// 相机控制器本身不触发 Render,便于业务图层完成整批更新后只渲染一次。
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return isGuiThread() && m_pCameraController != NULL &&
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m_pCameraController->setTopView();
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}
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void nmWxVTKRenderContainerWidget::showReadyState()
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{
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Q_ASSERT(isGuiThread());
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if(!isGuiThread()) {
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return;
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}
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// 状态页与 VTK 页尺寸稳定,切换页面不会重建 RenderWindow 或 Renderer。
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m_pStateStack->setCurrentWidget(m_pVtkWidget);
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if(m_pViewCommandController != NULL) {
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m_pViewCommandController->setViewAvailable(true);
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}
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renderView();
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}
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void nmWxVTKRenderContainerWidget::showEmptyState(const QString& sMessage)
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{
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showMessageState(ViewState_Empty, sMessage);
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}
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void nmWxVTKRenderContainerWidget::showErrorState(const QString& sMessage)
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{
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showMessageState(ViewState_Error, sMessage);
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}
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void nmWxVTKRenderContainerWidget::showRenderingState(
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const QString& sMessage)
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{
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showMessageState(ViewState_Rendering, sMessage);
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}
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void nmWxVTKRenderContainerWidget::zoomIn()
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{
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if(m_pCameraController != NULL && m_pCameraController->zoomIn()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::zoomOut()
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{
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if(m_pCameraController != NULL && m_pCameraController->zoomOut()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::fitView()
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{
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if(m_pCameraController != NULL && m_pCameraController->fitView()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::resetCamera()
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{
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// 控制器用返回值表示相机是否确实改变,成功时只提交一次渲染。
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if(m_pCameraController != NULL && m_pCameraController->resetCamera()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::setTopView()
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{
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if(m_pCameraController != NULL && m_pCameraController->setTopView()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::setFrontView()
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{
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if(m_pCameraController != NULL && m_pCameraController->setFrontView()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::setRightView()
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{
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if(m_pCameraController != NULL && m_pCameraController->setRightView()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::setIsometricView()
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{
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if(m_pCameraController != NULL &&
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m_pCameraController->setIsometricView()) {
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renderView();
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}
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}
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void nmWxVTKRenderContainerWidget::setRotationCenter(
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|
|
|
double dX,
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|
double dY,
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|
|
double dZ)
|
|
|
|
|
|
{
|
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|
if(m_pCameraController != NULL &&
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|
m_pCameraController->setRotationCenter(dX, dY, dZ)) {
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|
renderView();
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}
|
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|
}
|
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void nmWxVTKRenderContainerWidget::resetRotationCenter()
|
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|
|
|
|
{
|
|
|
|
|
|
if(m_pCameraController != NULL &&
|
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|
|
|
|
m_pCameraController->resetRotationCenter()) {
|
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|
|
|
renderView();
|
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|
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|
|
}
|
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|
|
|
}
|
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|
bool nmWxVTKRenderContainerWidget::eventFilter(
|
|
|
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|
|
QObject* pObject,
|
|
|
|
|
|
QEvent* pEvent)
|
|
|
|
|
|
{
|
|
|
|
|
|
if(pObject == m_pVtkWidget && pEvent != NULL &&
|
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|
|
pEvent->type() == QEvent::MouseButtonPress) {
|
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|
|
|
|
QMouseEvent* pMouseEvent = static_cast<QMouseEvent*>(pEvent);
|
|
|
|
|
|
if(pMouseEvent->button() == Qt::RightButton) {
|
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|
|
|
|
// 菜单引用命令控制器长期持有的 QAction,不在每次右键时重复创建。
|
|
|
|
|
|
QMenu oMenu(this);
|
|
|
|
|
|
if(m_pViewCommandController != NULL) {
|
|
|
|
|
|
m_pViewCommandController->populateContextMenu(&oMenu);
|
|
|
|
|
|
}
|
|
|
|
|
|
if(!oMenu.isEmpty()) {
|
|
|
|
|
|
oMenu.exec(pMouseEvent->globalPos());
|
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|
|
|
}
|
|
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|
|
// 返回 true 只消费右键按下,避免 VTK 同时启动一次交互动作。
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
return QWidget::eventFilter(pObject, pEvent);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
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|
|
void nmWxVTKRenderContainerWidget::saveImage()
|
|
|
|
|
|
{
|
|
|
|
|
|
if(m_pImageExporter == NULL) {
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 实际编码格式由 QImage 按调用方选择的扩展名决定。
|
|
|
|
|
|
const QString sFileName = QFileDialog::getSaveFileName(
|
|
|
|
|
|
this,
|
|
|
|
|
|
tr("Save Image"),
|
|
|
|
|
|
QString(),
|
|
|
|
|
|
tr("PNG Image (*.png);;JPEG Image (*.jpg);;BMP Image (*.bmp)"));
|
|
|
|
|
|
if(!sFileName.isEmpty() && !m_pImageExporter->saveImage(sFileName)) {
|
|
|
|
|
|
QMessageBox::warning(this,
|
|
|
|
|
|
tr("Save Failed"),
|
|
|
|
|
|
tr("Unable to save the image."));
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void nmWxVTKRenderContainerWidget::copyImage()
|
|
|
|
|
|
{
|
|
|
|
|
|
if(m_pImageExporter != NULL &&
|
|
|
|
|
|
!m_pImageExporter->copyImageToClipboard()) {
|
|
|
|
|
|
QMessageBox::warning(this,
|
|
|
|
|
|
tr("Copy Failed"),
|
|
|
|
|
|
tr("Unable to capture the image."));
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void nmWxVTKRenderContainerWidget::printImage()
|
|
|
|
|
|
{
|
|
|
|
|
|
if(m_pImageExporter != NULL) {
|
|
|
|
|
|
m_pImageExporter->printImage(this);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void nmWxVTKRenderContainerWidget::printPreview()
|
|
|
|
|
|
{
|
|
|
|
|
|
if(m_pImageExporter != NULL) {
|
|
|
|
|
|
m_pImageExporter->printPreview(this);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void nmWxVTKRenderContainerWidget::showMessageState(
|
|
|
|
|
|
ViewState eState,
|
|
|
|
|
|
const QString& sMessage)
|
|
|
|
|
|
{
|
|
|
|
|
|
Q_ASSERT(isGuiThread());
|
|
|
|
|
|
if(!isGuiThread() || m_pStateStack == NULL ||
|
|
|
|
|
|
m_pStatePage == NULL || m_pStateLabel == NULL) {
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 所有非就绪状态共用同一页面,仅错误状态使用警示颜色。
|
|
|
|
|
|
if(eState == ViewState_Error) {
|
|
|
|
|
|
m_pStateLabel->setStyleSheet("QLabel { color: #a32626; }");
|
|
|
|
|
|
} else {
|
|
|
|
|
|
m_pStateLabel->setStyleSheet("QLabel { color: #4a4a4a; }");
|
|
|
|
|
|
}
|
|
|
|
|
|
m_pStateLabel->setText(sMessage);
|
|
|
|
|
|
m_pStateStack->setCurrentWidget(m_pStatePage);
|
|
|
|
|
|
if(m_pViewCommandController != NULL) {
|
|
|
|
|
|
m_pViewCommandController->setViewAvailable(false);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool nmWxVTKRenderContainerWidget::isGuiThread() const
|
|
|
|
|
|
{
|
|
|
|
|
|
QCoreApplication* pApplication = QCoreApplication::instance();
|
|
|
|
|
|
return pApplication == NULL ||
|
|
|
|
|
|
pApplication->thread() == QThread::currentThread();
|
|
|
|
|
|
}
|